Compact Precision Angular-Displacement-Limiting Impact-Resistant Vibration-Isolating Buffering Platform for Compact Optoelectronic Equipment

Abstract

The application provides a compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform for compact optoelectronic equipment. The platform comprises an optoelectronic equipment mounting plate and a bottom mounting plate, the optoelectronic equipment mounting plate and the bottom mounting plate are coupled via an angular-displacement-limiting assembly and a vibration-isolating buffering assembly, the vibration-isolating buffering assembly comprises a horizontal axial vibration-isolating buffering device and a vertical axial vibration-isolating buffering device, the vertical axial vibration-isolating buffering device has a vertical elastic supporting center O which is coincided with a mass center C, and the horizontal axial vibration-isolating buffering device has an elastic supporting plane which approaches to be coincided with a horizontal plane of the mass center. The platform of the subject application may effectively isolate and buffer severe impact and intense vibration environment to the optoelectronic equipment, the optoelectronic equipment is fixed on the optoelectronic equipment mounting plate; bottom mounting plate is fixed with a carrier on which the compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform is mounted. Through the subject invention, the subject invention and the carrier are always kept in a three-dimensional linear translational motion, so that the optoelectronic equipment is always in an excellent vibration impact environment for the optoelectronic equipment to work reliably, and thus enhancing working reliability and long service life of the optoelectronic equipment.

Claims

1. A compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform for optoelectronic equipment, comprising: an optoelectronic equipment mounting plate; and a bottom mounting plate; wherein the optoelectronic equipment mounting plate and the bottom mounting plate are configured to be coupled via a precision angular-displacement-limiting assembly and a vibration-isolating assembly; the vibration-isolating assembly further comprises a horizontal axial vibration-isolating buffering device and a vertical vibration-isolating buffering device; and the vertical vibration-isolating buffering device further comprises a vertical elastic supporting center O which is coincided with a mass center C.

2. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 1, wherein the precision angular-displacement-limiting assembly comprises a horizontal-plane angular-displacement-limiting assembly, a middle plate and a vertical angular-displacement-limiting assembly which are configured to form a “Tic-Tac-Toe”-like hollow structure.

3. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 1, wherein the vertical vibration-isolating buffering device comprises an outer casing body comprising an outer casing and a bottom plate, and the outer casing body is fixedly connected to the bottom mounting plate; an adjusting bolt is inserted into a center position of an upper portion of the outer casing, and a hexagon ring is installed into a top portion of the adjusting bolt; the adjusting bolt has a shaft shoulder in a middle portion of an outer edge, an upper portion and a lower portion of the shaft shoulder are sleeved with a cap and screwed with an adjusting nut, respectively; a retaining ring is arranged between an upper portion of the cap and the outer casing, an outer edge of the cap and the retaining ring are engaged by an inner ring, and an outer edge of the retaining ring and an inner hole of the outer casing are engaged; a lower portion of the cap extends axially into the outer casing along the adjusting bolt, an outer flange is located at a lower end of the cap, an outer edge of the outer flange is sleeved with a metal dampening assembly, an upper cushion is sleeved on the outer edge of the cap at an upper portion of the outer flange, and a distance is left between the upper cushion and the retaining ring; a coil spring is mounted between the bottom plate and the adjusting nut; and a lower cushion is provided on the bottom plate, the lower cushion is positioned outside, and the lower cushion is vertically spaced apart from a lower flange of the cap.

4. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 1, wherein the horizontal axial vibration-isolating buffering device comprises a housing with an opening at a lower portion of the housing, a sleeve is provided in the housing, a flange is provided to an upper portion of the flange, and a lower portion of the sleeve extends out of the housing; a horizontal friction plate, an upper planar spring, a horizontal buffering ring and a lower planar spring are arranged from top to bottom between the flange of the sleeve and the housing; a gap is left between the flange of the sleeve and an inner wall of the housing, and a gap is left between the sleeve and the opening at the lower portion of the housing; an outer edge of the horizontal friction plate is in contact with the inner wall of the housing, and a gap is left between an inner wall of the horizontal friction plate and an outer edge of the sleeve; outer edges of the upper planar spring and the lower planar spring are in contact with the inner wall of the housing, and inner walls of the upper planar spring and the lower planar spring are in contact with the outer edge of the sleeve; an outer edge of the horizontal buffering ring is in contact with the inner wall of the housing via an isolation ring, a gap is left between an inner wall of the horizontal buffering ring and the outer edge of the sleeve; a sliding piece and a horizontal adjusting nut are provided from top to bottom on an outer edge of a portion of the outer sleeve, the portion extends out of the housing, a disc spring is provided inside the horizontal adjusting nut, and the disc spring has a height higher than an upper plane of the horizontal adjusting nut; and an outer wall of the housing is fixedly connected to the photoelectric equipment mounting plate.

5. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 4, wherein the horizontal axial vibration-isolating buffering device and the vertical vibration-isolating buffering device are connected by a connecting shaft, the connecting shaft is passed through the sleeve of the horizontal axial vibration-isolating buffering device, inserted into a matching through hole inside the adjusting bolt of the vertical vibration-isolating buffering device, and screwed tightly for making the horizontal adjusting nut of the horizontal axial vibration-isolating buffering device and the vertical vibration-isolating buffering device fixedly connected.

6. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 2, wherein the precision angular-displacement-limiting assembly has at least two sliding rails, wherein a first sliding rail of the at least two sliding rails is configured to be perpendicular to a direction of an impact force, and a second sliding rail of the at least two sliding rails is configured to be perpendicular to the first sliding rail.

7. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 2, wherein the precision angular-displacement-limiting assembly has at least two sliding rails, wherein both a first sliding rail and a second sliding rails of the at least two sliding rails are arranged at an angle of 45 degrees to the direction of the impact force.

8. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 2, wherein the vertical angular-displacement-limiting assembly is configured below the horizontal-plane angular-displacement-limiting assembly and is coupled to the optoelectronic device mounting plate when the impact is primarily from a vertical direction; and the horizontal-plane angular-displacement-limiting assembly is configured below the vertical angular-displacement-limiting assembly and is coupled to the bottom mounting plate when the impact is primarily from a horizontal direction.

9. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 1, wherein the precision angular-displacement-limiting assembly comprises a three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type, and the precision angular-displacement-limiting assembly forms a “Tic-Tac-Toe”-like hollow structure; the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type comprises an X-axis sliding rest, an XY-axis two-dimensional cross-shaped sliding rail, a YZ-axis integrated two-dimensional sliding rest and a Z-axis sliding rest; an upper portion of the X-axis sliding rest is coupled to the optoelectronic equipment mounting plate, a lower portion of the X-axis sliding rest is coupled to an X-axis sliding rail of the XY-axis two-dimensional cross-shaped sliding rail and slides along an X-axis linearly; the YZ-axis integrated two-dimensional sliding rest comprises a Y-axis sliding rest and at least one Z-axis sliding rail rigidly connected to the Y-axis sliding rest, wherein the Y-axis sliding rest is coupled to a Y-axis sliding rail of the XY-axis two-dimensional cross-shaped sliding rail and slides along a Y-axis; and the Z-axis sliding rest is connected to the at least one Z-axis sliding rail and slides along a Z-axis linearly.

10. The compact precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform of claim 9, wherein a stiffener is provided between the X-axis sliding rail and the Y-axis sliding rail of the Y-axis two-dimensional cross-shaped sliding rail, the stiffener has a straight polygon shape, a curved polygon shape or a combination thereof; the Z-axis sliding rest has a linear sliding bearing, the Z-axis sliding rail has steel balls and a sliding way, the steel ball and the sliding way has a contact area and the contact area has a cylindrical profile, a double-V profile, or a spline profile; and a groove is provided on a top end surface of the X-axis sliding rest.

Description

[0040] The accompanying figures (Figs.) illustrate embodiments and serve to explain principles of the disclosed embodiments. It is to be understood, however, that these figures are presented for purposes of illustration only, and not for defining limits of relevant applications.

[0041] FIG. 1 is a schematic diagram of a precision angular-displacement-limiting impact-resistant vibration-isolating buffering platform.

[0042] FIG. 2 is a schematic view of a vertical vibration-isolating buffering device of the present application.

[0043] FIG. 3 is a schematic view of a horizontal axial vibration-isolating buffering device of the present application.

[0044] FIG. 4 is a schematic view of the precision angular-displacement-limiting assembly where the vertical angular-displacement-limiting assembly is at a lower position.

[0045] FIG. 5 is a schematic view the precision angular-displacement-limiting assembly where the precision angular-displacement-limiting is at an upper position.

[0046] FIG. 6 is a schematic view showing a mounting plane of the horizontal rail and direction of an impact force is arranged at an angle of 45°, particularly a schematic view showing the impact along the X-axis.

[0047] FIG. 7 is a schematic view showing a mounting plane of the horizontal rail and direction of an impact force is arranged at an angle of 45°, particularly a schematic view showing the impact along the Y-axis.

[0048] FIG. 8 is a schematic view of a three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0049] FIG. 9 is a front view of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0050] FIG. 10 is a top view of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0051] FIG. 11 is a schematic view of an X-axis sliding rest of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0052] FIG. 12 is a schematic view of an XY-axis two-dimensional cross-shaped sliding rail of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0053] FIG. 13 is a schematic view of a YZ-axis integrated two-dimensional sliding rest of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type.

[0054] The structure of the present application is as shown in FIG. 1, comprising an optoelectronic equipment mounting plate 5 for mounting the optoelectronic equipment 6 and a bottom mounting plate 1. The optoelectronic equipment mounting plate 5 and the bottom mounting plate 1 are connected via an angular-displacement-limiting assembly 3 and a vibration-isolating assembly. The vibration-isolating assembly comprises a horizontal axial vibration-isolating buffering device 4 and a vertical vibration-isolating buffering device 2. A vertical elastic supporting center O of the vertical vibration-isolating buffering device 2 is coincided with a mass center C; and an elastic supporting center O.sub.1 of the horizontal axial vibration-isolating buffering device 4 is coincided with a horizontal plane of the mass center C.sub.1. The vertical vibration-isolating buffering device 2 and the horizontal axial vibration-isolating buffering device 4 render effective impact isolation on the platform to vertical impacts and horizontal impacts, respectively.

[0055] As shown in FIG. 2, the vertical vibration-isolating buffering device 2 comprises an outer casing body which further comprises an outer casing 7 and a bottom plate 8. An adjusting bolt 15 is inserted into a center positon of an upper portion of the outer casing 7; and an outer edge of the adjusting bolt 15 is sleeved with a cap 18 and an adjusting nut 19; the cap 18 and the outer casing 7 are separated by a retaining ring 16, and an inner ring 17 is sleeved between the outer edge of the cap 18 and the retaining ring 16; a lower portion of the cap 18 extends axially into the outer casing 7 along the adjusting bolt 15, whose outer edge is sleeved with an upper cushion 12; an outer flange is located at a lower end of the cap 18, an outer edge of the outer flange is sleeved with a metal dampening assembly; a coil spring 10 is mounted between the bottom plate 8 and the adjusting nut 13; and an outer edge of a lower portion of the coil spring 10 is sleeved with a lower cushion 9 which is fixed at the bottom plate 8.

[0056] The metal dampening assembly comprise a reed group surrounding the outer flange structure of the lower end of the cap 18, the reed group comprises straight reed 5 and curved reed 17 that are alternatively distributed. A straight reed 37 and a curved reed 38 are riveted into a unitary piece by a lower end of the reed group via a cushion sleeve 35 and a lower ring 36, and is further connected to the bottom plate 8 via the cushion sleeve 35; and an upper end is passed through a split ring 39 and a cone ring 40 and pressed tightly against the outer casing 7 and the retaining ring 16.

[0057] As shown in FIG. 3, the horizontal axial vibration-isolating buffering device 4 comprises a sleeve 29 and a housing 23; and a horizontal friction plate 28, an upper planar spring 27, an isolation ring 25 with a horizontal cushion 26 embedded inside, and a lower planar spring 24 are disposed from the top to the bottom between the sleeve 29 and the housing 23 from top to bottom. A space for vibration is left between the horizontal cushion 26 and the and the sleeve 29.

[0058] A sliding piece 22 and a horizontal dampening adjusting sleeve 20 are sequentially disposed on an outer edge of the sleeve 29 below the casing 23; and a disc spring 21 is disposed between the horizontal dampening adjusting sleeve 20 and the sliding piece 22. An outer cylindrical surface of the housing 23 has a thread to be connected to the optoelectronic equipment mounting plate 5. A bearing shaft is passed through the sleeve 29 and connected to vertical vibration-isolating buffering device 2 via a thread.

[0059] As shown in FIG. 4, the precision angular-displacement-limiting assembly 3 comprises a horizontal-plane angular-displacement-limiting assembly 3, a middle plate 32 and a vertical angular-displacement-limiting assembly 3 which are configured to form a “Tic-Tac-Toe”-like (also known as a pattern similar to “#”) hollow structure. A vertical rail has two arrangements, i.e. an upper position (FIG. 5) and a lower position (FIG. 4). An example of the lower position is shown in FIG. 4.

[0060] The horizontal-plane angular-displacement-limiting assembly 3 comprises four two-dimensional sliding rests 33, and each of four two-dimensional sliding rests 33 further comprises two sliding chutes, i.e. a vertical sliding chute and a horizontal sliding chute. A hollow “Tic-Tac-Toe”-like (also known as a pattern similar to “#”) structure formed by a one-dimensional linear sliding rail 34 is inserted into each of the two sliding chute. The one-dimensional linear sliding rail 34 at a top position is connected to the optoelectronic equipment mounting plate 5; and the one-dimensional linear sliding rail 34 at a bottom position is connected to the middle plate 32.

[0061] The vertical angular-displacement-limiting assembly 3 comprises four vertical sliding rails 31 and four vertical sliding rests 30, wherein the vertical sliding rails 31 are orthogonally connected to the middle plate 32, and the vertical sliding rests 30 are orthogonally connected to the bottom mounting plate 1, the vertical sliding rails 31 are movably connected to the vertical sliding rests 30 by being inserted into the vertical sliding rests 30.

[0062] A vertical angular-displacement-limiting assembly, the vertical sliding rail 31 is only connected with the optoelectronic equipment mounting plate for mounting the optoelectronic equipment 6 and the bottom mounting plate which is connected to a carrier. The structure is compacted, and many connecting pieces for one-dimensional guiding rail structure and many screws are thus avoided; and the structure has an excellent rigidity; and the angular-displacement-limiting function is also stable and reliable.

[0063] The upper position or the lower position of the vertical rail is determined by value of vertical impact acceleration {umlaut over (z)}.sub.∘, and value of horizontal acceleration ({umlaut over (x)}.sub.∘, ÿ.sub.∘). [0064] (1) When {umlaut over (z)}.sub.∘<({umlaut over (x)}.sub.∘, ÿ.sub.∘), in order to reduce the horizontal impact acceleration to the vertical rail, after vertical buffering action of the vertical vibration-isolating buffering device, the upper position of the vertical rail is selected [FIG. 4]. [0065] (2) When {umlaut over (z)}.sub.∘>({umlaut over (x)}.sub.∘, ÿ.sub.∘), in order to reduce the vertical impact acceleration to the horizontal rail, after vertical buffering action of the vertical vibration-isolating buffering device, the lower position of the vertical rail is selected [FIG. 5]. [0066] (3) In order to further reduce the horizontal impact acceleration ({umlaut over (x)}.sub.∘, ÿ.sub.∘) to each horizontal rail, direction of the impact force may be arranged at an angle of 45 degrees (45°) to coordinate axis of the horizontal rail. [0067] Therefore, a force applied to each horizontal rail is √{square root over (2)}/4F, and the horizontal axial vibration-isolating buffering device and equipment only is only subjected to a remaining impact response acceleration after the buffering action of a horizontal buffering device.

[0068] As shown in FIGS. 6 & 7, in order to reduce the horizontal impact acceleration to the horizontal rail, the horizontal rail may be arranged at an offset of an angle of 45 degrees (45°) to heading X-axis. In this case, the X-axis or the Y-axis are respectively subjected to maximum value of the impact acceleration peak a.sub.x0 or a.sub.y0, while assuming Fx=ma.sub.x, Fy=ma.sub.y, where: a.sub.x, a.sub.y represent strong impact acceleration along the x-axis and the y-axis, respectively; and m represents an average mass of electronic devices, the upper mounting plate and the angular-displacement-limiting assembly 3.

[0069] The horizontal rail is subjected to a force Fx′ in the X′-axis direction and a force Fy′ in the Y′-axis direction. Since guiding rails of the horizontal rail in the x-axis direction and the y-axis direction are respectively in X′.sub.1O′Y′.sub.1 and X″.sub.2O″Y″.sub.2 platforms. In this case, no matter the strong impact is applied to the x-axis direction or the y-axis direction, conclusion is established as Fx=ma.sub.x=Fx.sub.1′+Fy.sub.1″ (see FIG. 6), Fy=ma.sub.y=Fx2′+Fy.sub.2″ (see FIG. 7).

[0070] Since the guiding rails in both directions are simultaneously subjected to load of the impact regardless of the strong impact applied in the x-axis direction or the y-axis direction, the force applied to the guiding rail in each direction is only √{square root over (2)}/2 times of the load of the impact in the direction. Therefore, service life and reliability of the Z-axis sliding rail are enhanced.

[0071] To further improve: the precision angular-displacement-limiting assembly 3 comprises a three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type, and the precision angular-displacement-limiting assembly 3 forms a “Tic-Tac-Toe”-like (also known as a pattern similar to “#”) hollow structure; structure of the three-dimensional linear rolling guiding rail of a cross-shaped sliding rail type is shown in FIG. 8, FIG. 9 and FIG. 10, which comprises an X-axis sliding rest 41, an XY-axis two-dimensional cross-shaped sliding rail 42, a YZ-axis integrated two-dimensional sliding rest 43 and a Z-axis sliding rest 44. An upper portion of the X-axis sliding rest 41 is coupled to the optoelectronic equipment mounting plate 5, a lower portion of the X-axis sliding rest 41 is coupled to an X-axis sliding rail of the XY-axis two-dimensional cross-shaped sliding rail 42 and slides along an X-axis linearly; the YZ-axis integrated two-dimensional sliding rest 43 comprises a Y-axis sliding rest and at least one Z-axis sliding rail rigidly connected to the Y-axis sliding rest, wherein the Y-axis sliding rest is coupled to a Y-axis sliding rail of the XY-axis two-dimensional cross-shaped sliding rail 42 and slides along a Y-axis; and the Z-axis sliding rest 44 is connected to the Z-axis sliding rail and slides along a Z-axis linearly.

[0072] As shown in FIG. 13, the YZ-axis integrated two-dimensional sliding rest 43 comprises a Y-axis sliding rest and a Z-axis sliding rail rigidly connected to the Y-axis sliding rest, both of which construct a T-shaped two-dimensional structure. Alternatively, the Y-axis sliding rest and the Z-axis sliding rest 44 construct a cross-shaped sliding rest two-dimensional structure.

[0073] As shown in FIG. 12, a stiffener is provided between the X-axis sliding rail and the Y-axis sliding rail of the Y-axis two-dimensional cross-shaped sliding rail 44; and the stiffener has a straight polygon shape, a curved polygon shape or a combination of the straight polygon shape and the curved polygon shape.

[0074] The Z-axis sliding rest 44 has a linear sliding bearing, and the linear sliding bearing has steel balls and a sliding way, the steel ball and the sliding way has a contact area and the contact area has a cylindrical profile, a double-V profile, or a spline profile.

[0075] The X-axis sliding rest 41 is shown in FIG. 11. The X-axis sliding rail is replaced by the X-axis sliding rest 41; X-axis sliding rest 41 is connected to a square-shaped screw hole of the optoelectronic equipment mounting plate 5 for enhancing ability to resist moment of inertia from the Y-axis direction. A groove is provided on a top end surface of the X-axis sliding rest 41 for saving material.

[0076] The present application may have many specific embodiments, and only best modes are described in the above for the present application. It should be noted that those skilled in the art may make some improvements without departing from the principle of the present application. Improvements should also be considered within protection scope of the present application.