SUPPORT DAMPING APPARATUS AND VEHICLE USING SUPPORT DAMPING APPARATUS

Abstract

The present invention relates to a support damping apparatus and a vehicle using the support damping apparatus. The support damping apparatus includes a support spring, a force measuring element and a damper. The damper includes a hydraulic cylinder, a valve assembly and a control assembly. The force measuring element measures a support force value of the support damping apparatus for a supported object, and compares the support force value with a target force value. The damping force value of the damper is controlled by the control assembly in a mechanical, hydraulic or electric manner according to a comparison result so as to adjust the support force value of the support damping apparatus, so that the support force value of the support damping apparatus is equal to or approximate to the target force value. The present invention also relates to a vehicle with the support damping apparatus.

Claims

1. A support damping apparatus, comprising: a support spring (4), a force measuring element (100) and a damper (200), wherein the damper (200) comprises a hydraulic cylinder (17), a valve assembly (300) and a control assembly (400), wherein the force measuring element (100) is used to measure a support force value of the support damping apparatus for a supported object; the control assembly (400) is used to compare the support force value with a target force value, and control the damping force value of the valve assembly (300) in a mechanical, hydraulic or electric manner according to a comparison result so as to adjust a stretching damping force value or compression damping force value of the damper (200), so that the support force value of the support damping apparatus is equal to or approximate to the target force value; a damping adjusting method is as follows: when the support force value of the support damping apparatus is greater than the target force value, and the damper (200) is in a stretching process, increasing the stretching damping force value of the damper (200); and when the support force value of the support damping apparatus is less than the target force value, and the damper (200) is in the stretching process, decreasing the stretching damping force value of the damper (200); or when the support force value of the support damping apparatus is greater than the target force value, and the damper (200) is in a compression process, decreasing the compression damping force value of the damper (200); and when the support force value of the support damping apparatus is less than the target force value, and the damper (200) is in the compression process, increasing the compression damping force value of the damper (200).

2. The support damping apparatus according to claim 1, wherein the control assembly (400) comprises a control linkage (1); a piston (7) of the damper (200) is integrated with the valve assembly (300); the valve assembly (300) comprises a one-way valve (6) and a slide valve (8); the slide valve (8) is connected to the control linkage (1); the force measuring element (100) comprises a force measuring spring (2); the force measuring spring (2) is used to measure the support force value of the support damping apparatus and adjust the position of the slide valve (8) through the control linkage (1) according to a measured value, thereby adjusting the damping force value of the valve assembly (300).

3. The support damping apparatus according to claim 1, wherein the control assembly (400) comprises a control linkage (1), and a bottom valve (10) of the damper (200) is integrated with a valve assembly (300); the valve assembly (300) comprises a one-way valve (6) and a slide valve (8); the slide valve (8) is connected to the control linkage (1); the force measuring element (100) comprises a force measuring spring (2); the force measuring spring (2) is used to measure the support force of the support damping apparatus and adjust the damping force value of the valve assembly (300) through the control linkage (1) according to a measured value.

4. The support damping apparatus according to claim 1, wherein the control assembly (400) comprises a control linkage (1); the piston (7) of the damper (200) is integrated with a valve assembly (300); the valve assembly (300) comprises two one-way valves (6) and a slide valve (8); one one-way valve (6) is communicated with a stretching cavity (5), and the other one-way valve (6) is communicated with a compression cavity (9); the slide valve (8) communicated with the compression cavity (9) forms a compression valve (500); the slide valve (8) communicated with the stretching cavity (5) forms a stretching valve (600); the slide valve (8) is connected to the control linkage (1); the piston (7) is provided with a piston inner cavity (31); the piston inner cavity (31) is communicated with a liquid storage device (22); the piston inner cavity (31) is communicated with the stretching cavity (5) and the compression cavity (9) through the one-way valves (6); the force measuring element (100) comprises a force measuring spring (2); when the damper (200) is compressed or stretched, the force measuring spring (2) measures a support force value of the support damping apparatus and adjusts a damping force value of the stretching valve (600) and the compression valve (500) through the control linkage (1) according to the measured value.

5. The support damping apparatus according to claim 1, wherein a hydraulic cylinder (17) is a single-action hydraulic cylinder (20); a support spring (4) comprises an energy storage device (19), and the valve assembly (300) comprises a pressure reducing valve (21) and a one-way valve (6); the force measuring element (100) comprises a force measuring spring (2) arranged on the pressure reducing valve (21); the control assembly (400) comprises a valve core on the pressure reducing valve (21); wherein the energy storage device (19) is connected with an oil inlet of the pressure reducing valve (21) and an oil outlet of the one-way valve (6); the single-action hydraulic cylinder (20) is connected with an oil outlet of the pressure reducing valve (21) and an oil inlet of the one-way valve (6); when the single-action hydraulic cylinder (20) is stretched, the pressure of the liquid flow entering the single-action hydraulic cylinder (20) is compared with a set target pressure value of the pressure reducing valve (21) so as to adjust the damping force value of the pressure reducing valve (21); and when the single-action hydraulic cylinder (20) is compressed, the liquid flow in the single-action hydraulic cylinder (20) flows into the energy storage device (19) via the one-way valve (6).

6. The support damping apparatus according to claim 1, wherein a hydraulic cylinder (17) is a single-action hydraulic cylinder (20); a support spring (4) comprises an energy storage device (19); the valve assembly (300) comprises an overflow valve (23) and a one-way valve (6); the force measuring element (100) comprises a force measuring spring (2) arranged on the overflow valve (23); the control assembly (400) comprises a valve core on the overflow valve (23); wherein the energy storage device (19) is connected with an oil outlet of the overflow valve (23) and an oil inlet of the one-way valve (6), and the single-action hydraulic cylinder (20) is connected with an oil inlet of the overflow valve (23) and an oil outlet of the one-way valve (6); when the single-action hydraulic cylinder (20) is compressed, the pressure of the liquid flow flowing out of the single-action hydraulic cylinder (20) is compared with the target pressure value of the overflow valve (23) so as to adjust the damping force value of the overflow valve (23); and when the single-action hydraulic cylinder (20) is stretched, the liquid flow in the energy storage device (19) flows to the single-action hydraulic cylinder (20) via the one-way valve (6).

7. The support damping apparatus according to claim 1, wherein the force measuring element (100) comprises a force sensor (700); the control assembly (400) comprises a controller (24); the valve assembly (300) comprises an electric control valve (30); wherein at least one of the piston (7) and the bottom valve (10) of the damper (200) is provided with an electric control valve (30); when the piston (7) or the bottom valve (10) of the damper (200) is provided with a one-way valve (6), at least one force sensor (700) should be mounted to measure a resultant force of the support damping apparatus; when the piston (7) or the bottom valve (10) of the damper (200) is not provided with the one-way valve, at least two force sensors (700) should be mounted to measure the resultant force of the support damping apparatus and calculate whether a stress state of the damper (200) is a pulling force or pressure; the controller (24) compares the resultant force of the support damping apparatus measured by the force sensor (700) with the target force value and controls the damping force value of the electric valve (30) according to a comparison result and the stress state of the damper (200).

8. The support damping apparatus according to claim 7, wherein the force sensor (700) comprises a force sensor A(25) for measuring a support force value of a support spring (4) and a force sensor B(26) for measuring a pulling force or pressure value of the hydraulic cylinder (17); wherein a current resultant force of the support spring (4) and the hydraulic cylinder (17) on the support damping apparatus is calculated through measured values of the force sensor A(25) and the force sensor B(26), and a stress state of the hydraulic cylinder (17) is judged; and the controller (24) controls the damping force value of an electric control valve (30) according to the resultant force of the support damping apparatus and the stress state of the hydraulic cylinder (17).

9. The support damping apparatus according to claim 7, wherein the valve assembly (300) comprises an electric control valve (30) and a one-way valve (6); the electric control valve (30) and the one-way valve (6) are mounted on the piston (7) of the damper (200), wherein the one-way valve (6) on the piston (7) is connected with the electric control valve (30) in parallel; the force sensor (700) measures a resultant force of the support spring (4) and the hydraulic cylinder (17) on the support damping apparatus; the controller (24) compares the resultant force of the support damping apparatus measured by the force sensor (700) with the target force value and controls the damping force value of the electric control valve (30) according to a comparison result.

10. A vehicle, using the support damping apparatus of claim 1.

11. A vehicle, using the support damping apparatus of claim 2.

12. A vehicle, using the support damping apparatus of claim 5.

13. A vehicle, using the support damping apparatus of claim 6.

14. A vehicle, using the support damping apparatus of claim 7.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0054] FIG. 1 is a schematic diagram of a support damping apparatus of a spring-support stretching damping controlled type.

[0055] FIG. 2 is an enlarged view of a valve assembly part in the schematic diagram of FIG. 1.

[0056] FIG. 3 is a schematic diagram of a support damping apparatus of a spring-support compression damping controlled type.

[0057] FIG. 4 is an enlarged view of a valve assembly part in the schematic diagram of FIG. 3.

[0058] FIG. 5 is a schematic diagram of a support damping apparatus of a spring-support stretching and compression damping double-controlled type.

[0059] FIG. 6 is an enlarged view of a valve assembly part in the schematic diagram of FIG. 5.

[0060] FIG. 7 is a schematic diagram of a support damping apparatus of a hydraulic/pneumatic-support stretching damping controlled type.

[0061] FIG. 8 is a schematic diagram of a support damping apparatus of a hydraulic/pneumatic-support compression damping controlled type.

[0062] FIG. 9 is a schematic diagram 1 of a support damping apparatus of an electric control damping type.

[0063] FIG. 10 is a schematic diagram 2 of the support damping apparatus of the electric control damping type.

[0064] FIG. 11 is a schematic diagram 3 of the support damping apparatus of the electric control damping type.

REFERENCE NUMERALS IN THE DRAWINGS

[0065] 1-Control linkage; 2-force measuring spring; 3-piston rod [0066] 4-support spring; 5-stretching cavity; 6-one-way valve [0067] 7-Piston; 8-slide valve; 9-compression cavity [0068] 10-Bottom valve; 11-separation piston; 12-gas storage chamber [0069] 13-Liquid flow path on a bottom valve when in stretching; 14-liquid flow path on the bottom valve when in compression [0070] 15-Liquid flow path on a piston when in compression; 16-liquid flow path on the piston when in stretching [0071] 17-Hydraulic cylinder; 18-liquid storage cavity; 19-energy storage device (compressed air spring) [0072] 20-single-action hydraulic cylinder; 21-pressure reducing valve; 22-liquid storage device [0073] 23-Overflow valve; 24-controller; 25-force sensor (measuring pressure) [0074] 26-Force sensor (measuring a pulling force and pressure); 27-signal or control conductor [0075] 30-Electric control valve [0076] 31-Piston inner cavity; 32-liquid inlet/outlet flow path [0077] 100-Force measuring element; 200-damper; 300-valve assembly [0078] 400-Control assembly; 500-compression valve; 600-stretching valve [0079] 700-Force sensor

DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0080] Preferred solution 1: FIG. 1, FIG. 2, FIG. 3. FIG. 4, FIG. 5 and FIG. 6 illustrate schematic diagrams of a support damping apparatus of a spring-support stretching or (and) compression damping controlled type.

[0081] The support damping apparatus includes a force measuring spring 2, a support spring 4 and a damper 200. The damper 200 includes a hydraulic cylinder 17, a bottom valve 10, a piston 7, a valve assembly 300 and a control linkage 1. The valve assembly 300 includes a one-way valve 6 and a slide valve 8. The slide valve 8 is arranged on the bottom valve 10 or the piston 7 and linked with the control linkage 1. The one-way valve 6 is arranged on the bottom valve 10 and the piston 7. When the support force value of the support damping apparatus for a supported object measured by the force measuring spring 2 is changed, the control linkage 1 may drive the slide valve 8 to move up and down, so that an openness of a valve port of the slide valve 8 and the piston 7 or the bottom valve 10 increases or decreases, thereby changing a damping force value of the valve assembly 300.

[0082] A working principle:

[0083] For the support damping apparatus as shown in FIG. 1 and FIG. 2: when the support damping apparatus is compressed under stress, the liquid flow can flow through the one-way valve 6 on the piston 7 and the one-way valve 6 on the bottom valve 10 via a liquid flow path 14 on the bottom valve when in compression and a liquid flow path 15 on the piston when in compression. When the support damping apparatus is transformed from compression to stretching, the support force value decreases, the force measuring spring 2 changes from short to long, and the control linkage 1 and the slide valve 8 on the control linkage 1 are driven to move from bottom to top. When the support force value of the support damping apparatus decreases gradually from greater than the target force value to less than the target force value (the force measuring spring 2 changes from short to long), and a valve port of the stretching valve 600 (the valve port by which the liquid flow path 16 on the piston flows when in stretching is the valve port of the stretching valve 600) is changed gradually from a closed position to a fully opened position of the stretching valve 600, and the damping force value of the stretching valve 600 decreases. When the support force value of the support damping apparatus increases gradually from less than the target force value to greater than the target force value (the force measuring spring 2 changes from long to short), and the support damping apparatus is in a stretching process, the slide valve 8 moves from top to bottom, the valve port of the stretching valve 600 (the valve port by which the liquid flow path 16 on the piston flows by when in stretching is the valve port of the stretching valve 600) gradually decreases in a through diameter, and the damping force value of the stretching valve 600 increases.

[0084] For the support damping apparatus shown in FIG. 3 and FIG. 4:

[0085] When the support damping apparatus is stretched, the liquid flow can flow through the one-way valve 6 on the bottom valve 10 and the one-way valve 6 on the piston 7 via a liquid flow path 13 on the bottom valve when in stretching and a liquid flow path 16 on the piston when in stretching. When the support damping apparatus is compressed under stress, the support force value of the support damping apparatus increases, the force measuring spring 2 changes from long to short, and the control linkage 1 and the slide valve 8 on the control linkage 1 are driven to move from bottom to top. When the support force value of the support damping apparatus increases gradually from less than the target force value to greater than the target force value (the force measuring spring 2 changes from long to short), a valve port of the compression valve 500 (the valve port by which the liquid flow path 14 on the bottom valve flows when in compression is the valve port of the compression valve 500) is gradually changed from a closed position to a fully opened position of the compression valve 500, and the damping force value of the compression valve 500 decreases. When the support force value of the support damping apparatus decreases gradually from greater than the target force value to less than the target force value (the force measuring spring 2 changes from short to long), and the support damping apparatus is in a compression process, the slide valve 8 moves from top to bottom, the valve port of the compression valve 500 (the valve port by which the liquid flow path 14 on the bottom valve flows when in compression is the valve port of the compression valve 500) decreases gradually in a through diameter, and the damping force value of the compression valve 500 increases.

For the support damping apparatus as shown in FIG. 5 and FIG. 6: when the support damping apparatus is stretched, the support force value of the support damping apparatus decreases, the force measuring spring 2 changes from short to long, and the control linkage 1 and the slide valve 8 on the control linkage 1 are driven to move from bottom to top. When the support force value of the support damping apparatus decreases gradually from greater than the target force value to less than the target force value (the force measuring spring 2 changes from short to long), the valve port of the stretching valve 600 (the valve port by which the liquid flow path 16 on the piston flows when in stretching is the valve port of the stretching valve 600) is changed from a closed position to a fully opened position, and the damping force value of the stretching valve 600 decreases. When the support force value of the support damping apparatus increases gradually from less than the target force value to greater than the target force value (the force measuring spring 2 changes from long to short), and the support damping apparatus is in the stretching process, the slide valve 8 moves from top to bottom, a valve port of the stretching valve 600 (the valve port by which the liquid flow path 16 on the piston flows when in stretching is the valve port of the stretching valve 600) decreases gradually in a through diameter, and the damping force value of the stretching valve 600 increases. When the support damping apparatus is compressed, the support force value of the support damping apparatus increases, the force measuring spring 2 changes from long to short, and the control linkage 1 and the slide valve 8 on the control linkage 1 are driven to move from top to bottom. When the support force of the support damping apparatus increases gradually from less than the target force value to greater than the target force value (the force measuring spring 2 changes from long to short), the valve port of the compression valve 500 (the valve port by which the liquid flow path 14 on the bottom valve flows when in compression is the valve port of the compression valve 500) is changed from the closed position to the fully opened position, and the damping force value of the compression valve 500 decreases. When the support force value of the support damping apparatus decreases gradually from greater than the target force value to less than the target force value (the force measuring spring 2 changes from short to long), and when the support damping apparatus is in the compression process, the slide valve 8 moves from bottom to top, the valve port of the compression valve 500 (the valve port by which the liquid flow path 14 on the bottom valve flows when in compression is the valve port of the compression valve 500) decreases gradually in the through diameter, and the damping force value of the compression valve 500 increases. When the support damping apparatus is stretched, the liquid flow flows into the compression cavity 9 through the one-way valve 6 via the liquid flow path 13 on the bottom valve when in stretching. When the support damping apparatus is compressed, the liquid flow flows into the stretching cavity 5 through the one-way valve 6 via the liquid flow path 15 on the piston when in compression. The liquid flow during the stretching and compression of the support damping apparatus flows into or out of the liquid storage device 22 through a liquid inlet/outlet flow path 32.

[0086] The control linkage 1 shown in FIG. 1, FIG. 3 and FIG. 5 can be adjusted up and down. The position of the slide valve 8 can be adjusted by adjusting the position of the control linkage 1, so that a critical support force value of the support damping apparatus when the valve port of the compression valve 500 or the stretching valve 600 is opened and closed can be adjusted.

[0087] Preferred solution 2:

[0088] FIG. 7 and FIG. 8 illustrate schematic diagrams of a support damping apparatus of a hydraulic-support stretching or compression damping controlled type:

[0089] The support damping apparatus includes an energy storage device 19, a single-action hydraulic cylinder 20, a pressure reducing valve 21, an overflow valve 23 and a one-way valve 6. Pressure regulation springs of the pressure reducing valve 21 and the overflow valve 23 can set the pressure of the liquid flow entering or flowing out of the single-action hydraulic cylinder 20. The pressure of the liquid flow entering or flowing out of the single-action hydraulic cylinder 20 is compared with the set target pressure value, thereby indirectly measuring the support force of the single-action hydraulic cylinder 20. The damping force value of valve ports of the pressure reducing valve 21 and the overflow valve 23 is adjusted according to a comparison result, thereby adjusting the pressure of the liquid flow entering or flowing out of the single-action hydraulic cylinder 20. The above pressure regulation spring is equivalent to the force measuring spring 2.

[0090] A working principle:

[0091] For the support damping apparatus shown in FIG. 7: when the single-action hydraulic cylinder 20 is retracted under the stress, the liquid flow may flow into the energy storage device 19 via the one-way valve 6. When the hydraulic cylinder is stretched, the pressure reducing valve 21 makes the pressure of the liquid flow entering the hydraulic cylinder from the energy storage device not greater than the set target pressure value, thereby limiting the increase of the support force value of the single-action hydraulic cylinder 20. That is, when the single-action hydraulic cylinder 20 is in the stretching process and the support force value is less than the target force value (the pressure of the liquid flow is less than the set target pressure value), the liquid flow damping force value of the pressure reducing valve 21 decreases; and when the single-action hydraulic cylinder 20 is in the stretching process and the support force value is greater than the target force value (the pressure of the liquid flow is greater than the set target pressure value), the liquid flow damping force value of the pressure reducing valve 21 increases. When the single-action hydraulic cylinder 20 is compressed, the liquid flow can flow back to the energy storage device 19 from the single-action hydraulic cylinder 20 via the one-way valve 6.

[0092] For the support damping apparatus shown in FIG. 8: when the single-action hydraulic cylinder 20 is stretched, the liquid flow in the energy storage device 19 flows to the single-action hydraulic cylinder 20 via the one-way valve 6. When the single-action hydraulic cylinder 20 is compressed, the overflow valve 23 makes the pressure of the liquid flow flowing out of the hydraulic cylinder not less than the set target pressure value, thereby preventing the decrease of the support force value of the hydraulic cylinder. That is, when the single-action hydraulic cylinder 20 is in the compression process and the support force value is less than the target force value (the pressure of the liquid flow is less than the set target pressure value), the liquid flow damping force value of the overflow valve 23 increases; and when the single-action hydraulic cylinder 20 is in the compression process and the support force value is greater than the target force value (the pressure of the liquid flow is greater than the set target pressure value), the liquid flow damping force value of the overflow valve 23 decreases. When the single-action hydraulic cylinder 20 is stretched, the liquid flow can flow back to the single-action hydraulic cylinder 20 from the energy storage device 19 via the one-way valve 6.

[0093] Preferred solution 3:

[0094] FIG. 9, FIG. 10 and FIG. 11 illustrate schematic diagrams of a support damping apparatus of an electric control damping type.

[0095] The support damping apparatus includes a force measuring element 100, a support spring 4, a hydraulic cylinder 17, an electric control valve 30 and a controller 24. The electric control valve 30 is mounted on a bottom valve 10 or a piston 7 of the damper. The force measuring element 100 is composed of a force sensor 700 and relevant circuit elements. The controller 24 is composed of electronic circuit elements. The controller 24 plays a role in calculating a measured value of the force sensor 700 and controlling the damping force value of the electric control valve 30 (the electric control valve 30 refers to an electromagnetic valve, a magneto-rheological damper, an electro-rheological damper, etc.). In the support damping apparatus of a stretching or (and) compression damping controlled type shown in FIG. 9 and FIG. 10, at least one of the bottom valve 10 or the piston 7 is provided with the electric control valve 30. In the support damping apparatus of the stretching or (and) compression damping controlled type shown in FIG. 11, at least one of the bottom valve 10 or the piston 7 is provided with the electric control valve 30 and the one-way valve 6.

[0096] A working principle:

[0097] For the support damping apparatus shown in FIG. 9: the force sensor A 25 measures the support force value of the support spring 4. The force sensor B 26 measures the pulling force or pressure value of the hydraulic cylinder 17.

[0098] For the support damping apparatus shown in FIG. 10: the force sensor A 25 measures a resultant force of the support spring 4 and the hydraulic cylinder 17. The force sensor B 26 measures the pulling force or pressure value of the hydraulic cylinder damper 17.

[0099] For the support damping apparatus shown in FIG. 11:

[0100] The force sensor A 25 measures the resultant force of the support spring 4 and the hydraulic cylinder 17. The piston 7 or (and) the bottom valve 10 is provided with both the electric control valve 30 and the one-way valve 6.

[0101] In the subsequent description of the working state, the control signal outputted by the controller 24 is only suitable for controlling the piston 7 with the electric control valve 30 or the bottom valve 10 with the electric control valve 30. For the piston 7 without the electric control valve 30 or the bottom valve 10 without the electric control valve 30, the change of the damping force value is not controlled by the controller 24. The piston 7 without the electric control valve 30 or the bottom valve 10 without the electric control valve 30 shall use the conventional damping valve and one-way valve 6 mounted on the piston 7 or the bottom valve 10 like the conventional single-barrel or double-barrel damper. The working mode of the piston 7 without the electric control valve 30 or the bottom valve 10 without the electric control valve 30 is the same as the working mode of the piston 7 or the bottom valve 10 of the traditional damper. As shown in FIG. 9, FIG. 10 and FIG. 11, at least one of the piston 7 and the bottom valve 10 is provided with the electric control valve 30, and both can be provided with the electric control valve 30, but not both must be provided with the electric control valve 30. The bottom valve 10 or the piston 7 without the electric control valve 30 should be additionally provided with the conventional damping valve and the conventional one-way valve 6 of the conventional single-barrel or double-barrel damper.

[0102] For the support damping apparatus shown in FIG. 9 and FIG. 10: the controller 24 calculates the current resultant force of the support spring 4 and the hydraulic cylinder 17 on the support damping apparatus according to the measured values of the force sensor A 25 and the force sensor B 26. When the resultant force is greater than the target force value, and the stress state of the hydraulic cylinder 17 is a pulling force, the control signal outputted by the controller 24 increases the damping force value of the electric control valve 30 on the piston 7 (applicable when the piston 7 is provided with the electric control valve 30), and decreases the damping force value of the electric control valve 30 on the bottom valve 10 (applicable when the bottom valve 10 is provided with the electric control valve 30). When the resultant force is greater than the target force value, and the stress state of the hydraulic cylinder 17 is the pressure, the control signal outputted by the controller 24 decreases the damping force value of the electric control valve 30 on the piston 7 (applicable when the piston 7 is provided with the electric control valve 30) and the damping force value of the electric control valve 30 on the bottom valve 10 (applicable when the bottom valve 10 is provided with the electric control valve 30).

[0103] When the resultant force is less than the target force value, and the stress state of the hydraulic cylinder 17 is a pulling force, the control signal outputted by the controller 24 decreases the damping force value of the electric control valve 30 on the piston 7 and the damping force value of the electric control valve 30 on the bottom valve 10. When the resultant force is less than the target force value, and the stress state of the hydraulic cylinder 17 is the pressure, the control signal outputted by the controller 24 decreases the damping force value of the electric control valve 30 on the piston 7 (applicable when the piston 7 is provided with the electric control valve 30) and increases the damping force value of the electric control valve 30 on the bottom valve 10 (applicable when the bottom valve 10 is provided with the electric control valve 30).

[0104] For the support damping apparatus shown in FIG. 11: the force sensor 700 measures the resultant force of the support spring 4 and the hydraulic cylinder 17. The piston 7 or (and) the bottom valve 10 is provided with both the electric control valve 30 and the one-way valve 6.

[0105] When the resultant force is less than the target force value, the control signal outputted by the controller 24 increases the damping force value of the electric control valve 30 on the piston 7 (applicable when the piston 7 is provided with the electric control valve 30) and decreases the damping force value of the electric control valve 30 on the bottom valve 10 (applicable when the bottom valve 10 is provided with the electric control valve 30).

[0106] When the resultant force is less than the target force value, the control signal outputted by the controller 24 decreases the damping force value of the electric control valve 30 on the piston 7 (applicable when the piston 7 is provided with the electric control valve 30) and increases the damping force value of the electric control valve 30 on the bottom valve 10 (applicable when the bottom valve 10 is provided with the electric control valve 30).

[0107] When the hydraulic cylinder 17 is stretched and the bottom valve 10 is provided with the electric control valve 30 and the one-way valve 6, the liquid flow flows by the one-way valve 6 on the bottom valve 10 and is not influenced by the electric control valve 30 on the bottom valve 10.

[0108] When the hydraulic cylinder 17 is compressed and the piston 7 is provided with the electric control valve 30 and the one-way valve 6, the liquid flow flows by the one-way valve 6 on the piston 7 and is not influenced by the electric control valve 30 on the piston 7.

[0109] The preferred solutions described herein are only listed partially. Any method that uses the measured force value to directly or indirectly adjust and control the damping of the damping force in a mechanical, electric or hydraulic manner or that uses the measured force value to directly or indirectly adjust and control the support force value of the object in the mechanical, electric or hydraulic manner to reduce the vibration shall all belong to the solutions that are apparent from the technical solutions used herein and shall fall within the technical scope of the patent.