Combined mobile cart for sick and wounded

Abstract

A combined mobile cart for the sick or wounded, includes a mobile cart and a mobile stretcher. The mobile cart includes a main body frame, a left retractable track mechanism, a right retractable track mechanism, a lifting and translating mechanism, and an automatic movable weight-balancing mechanism. The top of the main body frame is provided with the left and right retractable track mechanisms, a supporting layer is arranged in a middle of the main body frame of the mobile stretcher, and the automatic movable weight-balancing mechanism is arranged at a bottom of the main body frame; and the lifting and translating mechanism is provided with a left case body and a right case body, lifting ropes are arranged under the lifting and translating mechanism, and suspension tools are connected with the lifting ropes, so that functions of vertically lifting and vertically moving the mobile stretcher are realized.

Claims

1. A combined mobile cart for a sick or wounded, comprising a mobile cart and a mobile stretcher, wherein the mobile cart comprises a main body frame (14), a left retractable track mechanism (6), a right retractable track mechanism (7), a lifting and translating mechanism (1), and an automatic movable weight-balancing mechanism (18); the left retractable track mechanism (6) and the right retractable track mechanism (7) are arranged on a top of the main body frame (14), and a supporting layer (15) is arranged in a middle of the main body frame (14), the automatic movable weight-balancing mechanism (18) is arranged at a bottom of the main body frame (14), and universal casters (16), a self-contained power supply and a PLC system (30) are arranged under the bottom of the main body frame (14); the left retractable track mechanism (6) and the right retractable track mechanism (7) are respectively arranged at a left side and a right side on the top of the main body frame (14), and the lifting and translating mechanism is formed by fixedly assembling a left case body (2) and a right case body (3) via a first linkage rod (8) and a second linkage rod (9) as well as a first interval-controlling rod (58) and a second interval-controlling rod (59), and supported by left and right case-frame travelling wheels (35) to run on tracks of a first fixed track (10), a second fixed track (11), a first retractable track (4) and a second retractable track (5) on the top of the main body frame (14), so as to reciprocate along an axial line when the retractable tracks deploy; lifting ropes (43) are arranged below the left case body (2) and the right case body (3) of the lifting and translating mechanism, and suspension tools (12) are connected with the lifting ropes (43) for vertically lifting and vertically moving the mobile stretcher; the automatic movable weight-balancing mechanism (18) is arranged at the bottom of the main body frame (14), and the automatic movable weight-balancing mechanism (18) is configured to move outwards under driving of a drive weight-balancing block (21) so as to balance a force moment in lifting when the lifting and translating mechanism (1) is moved outwards to a lifting position, and configured to move towards the inside of the main body frame under the driving of the drive weight-balancing block (21) when the lifting and translating mechanism (1) completes vertical lifting and inward movement, so as to reduce a space to facilitate the movement of the mobile cart; the self-contained power supply for supplying power to drive the mobile cart and the PLC system (30) for operation controlling are arranged at the bottom of the main body frame (14); the mobile stretcher (13) adopts a shovel type mobile stretcher for the sick or wounded, a simple mobile stretcher for the sick or wounded, or an easy-to-move mobile stretcher; and the mobile stretcher (13) is arranged below the left case body (2) and the right case body (3) of the lifting and translating mechanism of the mobile cart, and the suspension tools (12) arranged below the left case body (2) and the right case body (3) of the lifting and translating mechanism (1) is configured to lift the mobile stretcher (13).

2. The combined mobile cart according to claim 1, wherein the lifting and translating mechanism (1) is formed by assembling the left case body (2) and the right case body (3) via the first linkage rod (8) and the second linkage rod (9) as well as the first interval-controlling rod (58) and the second interval-controlling rod (59); the case-frame travelling wheels (35) are arranged above the left case body (2) and the right case body (3), a left case lifting passive rope sheave (28) is arranged at a left side in a middle of the left case body (2), a right case lifting active rope sheave (42) is arranged at a left side in a middle of the right case body (3), the lifting ropes (43) are encircled around of the active and passive rope sheaves, and the lifting ropes (43) are connected with the suspension tools (12) via rope guiding wheels (45) arranged at two sides at the bottom of each of the left case body and the right case body; a drive motor (36) is arranged in the middle inside the right case body, the drive motor (36) is coaxially connected with a right case rope sheave drive active gear (39), the right case rope sheave drive active gear (39) is meshed with a rope sheave drive passive gear (40), the rope sheave drive passive gear (40) and the lifting active rope sheave (42) are coaxially linked with the left case lifting driven rope sheave (28) though the second linkage rod (9), such that the lifting ropes (43) drive the suspension tools (12) to vertically move up and down; a left case translating active gear (27) and a right case translating active gear (41) for driving the lifting and translating mechanism (1) to translate on the tracks are respectively arranged above middles of the left case body (2) and the right case body (3), a translating drive motor (52) and a left case translating transmission active gear (25) are arranged at an inner side and in the middle of the middle of the left case and are coaxially linked for transmission, the left case translating transmission active gear (25) is meshed with a left case duplicate gear (26), a duplicate gear is combined by the left case translating active gear (27) and the left case duplicate gear (26), the left case duplicate gear (26) is coaxially linked via the first linkage rod (8), with the right case translating active gear (41) arranged at the upper-right side of the right case, and respectively meshed with racks (62) arranged at lower levels of the retractable tracks above the left case and the right case; when the translating drive motor (52) operates, the left case translating transmission active gear (25) is meshed with the left case duplicate gear (26) to drive the left case translating active gear (27) and the right case translating active gear (41) to be meshed with the racks (62) for operation under the action of the linkage rod (8), so that the lifting and translating mechanism axially translates on the retractable tracks.

3. The combined mobile cart according to claim 1, wherein retractable track mechanisms are formed by assembling the first fixed track (10), the second fixed track (11), the first retractable track (4) and the second retractable track (5); deployment drive motors (64) are configured to drive four-bar linkage mechanisms (17), and hence drive the first retractable track (4) and the second retractable track (5); the first fixed track (10) and the second fixed track (11) are symmetrically arranged at the left side and the right side on the top of the main body frame, and a first rack (61) and a second rack (62) are arranged at the bottoms of the fixed tracks and the retractable tracks, respectively, and meshed with the left case translating active gear (27) and the right case translating active gear (41) of the lifting and translating mechanism, respectively; the retractable tracks are arranged oppositely in two groups, i.e., a left group and a right group; the first retractable track (4) and the second retractable track (5) are retractably connected with left and right first fixed tracks (10) and left and right second fixed tracks (11) by hinges (63), tightly clung to a lateral rod (134) of the main body frame during un-deploying, and are in a cantilever state during deploying, at this moment, the lifting and translating mechanism is moved outwards to be in a vertically-lifting operation state; first racks (61) and second racks (62) are arranged at bottoms of two groups of first fixed tracks (10) and second fixed tracks (11) as well as first retractable tracks (4) and second retractable tracks (5); when the first retractable tracks (4) and the second retractable tracks (5) are un-deployed, the lifting and translating mechanism (1) is moved outwards, and the left case translating active gear (27) and the right case translating active gear (41) are respectively meshed with the first racks (61) and the second racks (62); the four-bar linkage mechanisms (17) comprise a left group and a right group with each group comprising the deployment drive motor (64), a coaxial gear (96) of the deployment drive motors (64), a transmission large gear (95), a transmission crank (101), a transmission link (104) and the retractable track (5), and the two groups are correspondingly arranged; the coaxial gear (96) connected with the drive motor is meshed with the transmission large gear (95), a center hole of the transmission large gear (95) is in key joint with the supporting layer (15) of the mobile cart, and a transmission shaft (100) and the transmission crank (101) are integrally connected, the transmission crank (101) and the transmission link (104) are slidably connected via a first hinge pin (103), and the transmission link (104) and the first retractable track (4) and the second retractable track (5) are slidably connected by a second hinge pin (105), and the deployment drive motor (64) moves forward and backward through a meshing operation of the coaxial gears (96) with the transmission large gear (95) so as to drive the transmission crank (101) to move, so that the transmission link (104), the first retractable track (4) and the second retractable track (5) un-deploy or deploy.

4. The combined mobile cart according to claim 1, wherein the automatic movable weight-balancing mechanism (18) is arranged at the bottom of the main body frame (14), and is formed by assembling a driving weight-balancing block (21), racks (122), a track (123) and a driving member; the driving weight-balancing block (21) is fixedly disposed within the main body frame (14), and fixed with the racks (122) arranged at an inner side of the driving weight-balancing block; the track (123) is fixed below the driving weight-balancing block (21) and the racks (122), the driving weight-balancing block (21) is connected with a track guide block (126), and the track guide block (126) and the track (123) slide for operation; the driving member is coaxially linked by the driving motor (130) to drive the active gear (128) to operate; the driving motor (130) is fixed on a supporting plate (129) at the bottom of the main body frame to drive the active gear (128) to be meshed with a first rack driving gear (131) and a second rack driving gear (133); two rack driving gears are comprised, namely, a first rack driving gear (131) and a second rack driving gear (133), which are linked by a linkage rod (132), and the linkage rod (132) is fixed on the driving weight-balancing block by a first bearing seat (124) and a second bearing seat (125); the driving motor (130) operates to drive the active gear (128) to rotate, so as to drive the first rack driving gear (131) to rotate, and drive the second rack driving gear (133) to rotate under the action of the linkage rod (132), thereby driving the racks (122) connected with the weight-balancing block (21) to operate, and then driving the weight-balancing block (21) to inwards translate along the axial line of the track (123) at the bottom of the main body frame (14).

5. The combined mobile cart according to claim 1, wherein the mobile stretcher is of a shovel type mobile stretcher for the sick or wounded or a simple mobile stretcher for a sick or wounded, the shovel type mobile stretcher is a rectangular cabinet rack including cross rods (20) and longitudinal rods (19) of the stretcher; a plurality of groups of corresponding movable pallet supporting bases (22) are arranged on the cross rods (20) of the stretcher, and through holes are disposed above the movable pallet supporting bases and pass through the cross rods (20) of the stretcher; a constraint key (29) is disposed below the cross rods to constrain that the movable pallet supporting bases make a circumference rotation about axial lines of the cross rods; a key slot is disposed inside the through holes above movable pallets so as to be matched with the constraint key (29); the movable pallets are disposed in rectangular holes below movable pallet bases; and a plurality of lifting hooks (24) are arranged at the longitudinal rods (19); the simple mobile stretcher for the sick or wounded is a rectangular cabinet rack composed of longitudinal rods (70) and cross rods (71), a plurality of movable flexible belts (72) are movably connected with an introduction plate (75) at the bottom of a sick or wounded's body by couplings (76), separated from an introduction sheet after passing through the bottom of the sick or wounded's body under the guidance of the introduction sheet, remained at the bottom of the sick or wounded's body, rapidly fastened by rapid couplings (73) via the cross rods, so as to support the sick or wounded; and a plurality of lifting hooks (74) are arranged at the longitudinal rods (70) for matching with the suspension tools (12), which are arranged at the lifting and translating mechanism (1), of the mobile cart to lift and translate the sick or wounded.

6. The combined mobile cart according to claim 1, wherein a method for using the combined mobile cart comprises the following steps: step 1, a plurality of movable pallets (23) of a shovel type mobile stretcher are pulled out towards a rectangular frame, then placed at the periphery side of the sick or wounded in a sickbed, and then pushed into the downside of the sick or wounded's body one by one under the manual operation of the nursing staff, so that a plurality of pairs of movable pallets (23) are fully supported under the sick or wounded's body, so as to support the sick or wounded; alternatively, a simple mobile stretcher for a sick or wounded is adopted, a rectangular frame (78) of the single mobile stretcher for the sick or wounded is placed at the periphery side of the sick or wounded in the sickbed, then an introduction plate (75) and flexible belts (72) are detachably connected by movable couplings (76), the introduction plate (75) is pushed from the downside of the sick or wounded' body and pulled out from the other side under the manual operation of the nursing staff, and then the couplings of the introduction plate (75) and the flexible belts (72) are separated, such that the flexible belts (72) and the introduction plate (75) are separated, and then the flexible belts (72) bypass two cross rods (71) of the rectangular cabinet frame and fixed by using rapid couplings (73), so as to support the sick or wounded's body, and the plurality of flexible belts (72) are successively selected to be in appropriate positions, supported at the lower lying side of the sick or wounded's body, and fixed on the two cross rods (71) of the rectangular frame, so as to support the sick or wounded; step 2, the mobile cart is moved to a side position of the sick or wounded's body, and then a first retractable track (4) and a second retractable track (5) which are arranged at the left side and the right side of the upper part of a main body frame (14) of the mobile cart are opened to respectively enable a lifting and translating mechanism (1) and an automatic movable weight-balancing mechanism (18) to outwards move along the center axial line of the mobile cart, such that the lifting and translating mechanism (1) directly faces the upside of the sick or wounded in a lying state, that is, the upside of the mobile stretcher, and then lifting ropes (43) run downwards to connect suspension tools (12) fixed below the lifting ropes with lifting hooks (24) on the shovel type mobile stretch or lifting hooks (74) on the simple mobile stretcher; at this time, a PLC system controls the lifting ropes to run upwards, then the mobile stretcher supports the sick or wounded to be lifted together; when the mobile stretcher and the sick or wounded raise to a level which is higher than the height of a stretcher supporting layer, the mobile stretcher and the sick or wounded are immediately translated towards the axial line of the mobile cart and stably run downwards when being translated to an inner dead point, so that the stretcher and the sick or wounded may be stably placed on the supporting layer (15) of the mobile cart; at the same time, the first retractable track (4) and the second retractable track (5) are un-deployed onto lateral rods (134) of the main body frame of the mobile cart; the drive weight-balancing blocks (21) on the automatic movable weight-balancing mechanism (18) are translated towards the interior of the chassis, at this time, it is possible to safely, reliably, and stably move the sick or wounded; step 3, when the combined mobile cart for the sick or wounded is moved to a second desired position, the PLC system controls a left retractable track mechanism (6) and a right retractable track mechanism (7) to operate, the first retractable track (4) and the second retractable track (5) deploy, and the automatic movable weight-balancing mechanism (18) operates to drive the weight-balancing block (21) to translate outwards, the lifting and translating mechanism (1) lifts the mobile stretcher and the sick or wounded, and then translates them outwards to an outer dead point, and then the lifting and translating mechanism drives the lifting ropes to operate to move the mobile stretcher and the sick or wounded downwards, after the mobile stretcher and the sick or wounded arrive at a locating point or an examination bed is placed, the suspension tools (12) are separated from the lifting hooks (24) of the shovel type mobile stretcher or the lifting hooks (74) of the simple mobile stretcher, and the plurality of movable pallets of the shovel type mobile stretcher are pulled out; the shovel type mobile stretcher is removed, a further medical operation may be performed on the sick or wounded; alternatively, the quick couplings (73) fixed on the flexible belts (72) on the simple mobile stretcher are removed, the flexible belts (72) may be pulled out from the downside of the sick or wounded's body, and then a frame of the simple mobile stretcher is removed, so that the next medical operation may be performed on the sick or wounded; for special medical working conditions, no metal parts are allowed to enter an examination room when a nuclear magnetic resonance examination is performed; in this case, a shovel type mobile stretcher or a simple mobile stretcher made of a carbon fiber or non-metal composite material is adopted, a method for manually lifting the mobile cart outside the examination room is used to move the sick or wounded onto a nuclear magnetic resonance examination table; and for a field or accident scene, due to limited conditions, it is also possible to directly use the shovel type mobile stretcher or the simple mobile stretcher for manual movement, a reasonable supporting point is selected for supporting and moving the sick or wounded without changing a lying position of the sick or wounded, in this way, secondary injury caused by moving the sick or wounded will not be caused.

Description

DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram showing an implementation structure of the present invention.

(2) FIG. 2 is a schematic diagram showing a lifting and translating mechanism according to an embodiment of the present invention.

(3) FIG. 3 is a schematic diagram showing a left case of a lifting and translating mechanism according to an embodiment of the present invention.

(4) FIG. 4 is a schematic diagram showing a right case of a lifting and translating mechanism according to an embodiment of the present invention.

(5) FIG. 5 is a schematic diagram showing a left group of fixed tracks, retractable tracks, and deployment drive mechanisms.

(6) FIG. 6 is a schematic diagram showing an automatic movable weight-balancing mechanism of the present invention.

(7) FIG. 7 is a schematic diagram showing a shovel type mobile stretcher for a sick or wounded according to the present invention.

(8) FIG. 8 is a schematic diagram showing a simple mobile stretcher for a sick or wounded of the present invention.

(9) FIG. 9 is a schematic structural view of a mobile cart in an operating condition according to the present invention.

(10) FIG. 10 is a schematic structural view of a mobile cart in a moving condition according to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(11) In order to achieve the above objective, a technical solution of the present invention is as follows: a combined mobile cart for a sick or wounded operates according to the following steps. In step 1, a plurality of movable pallets 23 of a shovel type mobile stretcher for a sick or wounded (FIG. 7) are pulled out towards a rectangular frame, then placed at the periphery side of the sick or wounded in a sickbed, and then pushed into the downside of the sick or wounded's body one by one under the manual operation of the nursing staff, so that a plurality of pairs of movable pallets 23 are fully supported under the sick or wounded's body, so as to support the sick or wounded. Alternatively, a simple mobile stretcher for a sick or wounded (as shown in FIG. 8) is adopted, a rectangular frame 78 of the single mobile stretcher for the sick or wounded (as shown in FIG. 8) is placed at the periphery side of the sick or wounded in the sickbed, then an introduction plate 75 and flexible belts 72 are detachably connected by movable couplings 76, the introduction plate 75 is pushed from the downside of the sick or wounded' body and pulled out from the other side under the manual operation of the nursing staff, and then the couplings of the introduction plate 75 and the flexible belts 72 are separated, such that the flexible belts 72 and the introduction plate 75 are separated, and then the flexible belts 72 bypass two cross rods 71 of the rectangular cabinet frame and fixed by using rapid couplings 73 (as shown in FIG. 8), so as to support the sick or wounded's body, and the plurality of flexible belts 72 are successively selected to be in appropriate positions, supported at the lower lying side of the sick or wounded's body, and fixed on the two cross rods 71 of the rectangular frame, so as to support the sick or wounded; In step 2, the mobile cart (as shown in FIG. 10) is moved to a side position of the sick or wounded's body, and then retractable tracks 4, 5 which are arranged at the left side and the right side of the upper part of a main body frame 14 of the mobile cart are opened to respectively enable a lifting and translating mechanism 1 and an automatic movable weight-balancing mechanism 18 to outwards move along the center axial line of the mobile cart, such that the lifting and translating mechanism 1 directly faces the upside of the sick or wounded in a lying state, that is, the upside of the mobile stretcher, and then lifting ropes 43 run downwards to connect suspension tools 12 fixed below the lifting ropes with lifting hooks 24 on the shovel type mobile stretch or lifting hooks 74 on the simple mobile stretcher. At this time, a PLC system controls the lifting ropes to run upwards, and then the mobile stretcher supports the sick or wounded to be lifted together. When the mobile stretcher and the sick or wounded raise to a level which is higher than the height of a stretcher supporting layer, the mobile stretcher and the sick or wounded are immediately translated towards the axial line of the mobile cart and stably run downwards when being translated to an inner dead point, so that the stretcher and the sick or wounded may be stably placed on the supporting layer 15 of the mobile cart. At the same time, the retractable tracks 4, 5 are un-deployed onto lateral rods 134 of the main body frame of the mobile cart. The drive weight-balancing blocks 21 on the automatic movable weight-balancing mechanism 18 are translated towards the interior of the chassis, the combined mobile cart is in a state as shown in FIG. 10. At this time, it is possible to safely, reliably, and stably move the sick or wounded. In step 3, when the combined mobile cart for the sick or wounded is moved to a second desired position, the PLC system controls a left retractable track mechanism 6 and a right retractable track mechanism 7 to operate, the retractable tracks 4, 5 deploy, and the automatic movable weight-balancing mechanism 18 operates to drive the weight-balancing block 21 to translate outwards, the lifting and translating mechanism 1 lifts the mobile stretcher and the sick or wounded, and then translates them outwards to an outer dead point, and then the lifting and translating mechanism drives the lifting ropes to operate to move the mobile stretcher and the sick or wounded downwards, after the mobile stretcher and the sick or wounded arrive at a locating point or an examination bed is placed, the suspension tools 12 are separated from the lifting hooks 24 of the shovel type mobile stretcher or the lifting hooks 74 of the simple mobile stretcher, and the plurality of movable pallets of the shovel type mobile stretcher are pulled out; the shovel type mobile stretcher is removed, a further medical operation may be performed on the sick or wounded. Alternatively, the quick couplings 73 fixed on the flexible belts 72 on the simple mobile stretcher are removed, the flexible belts 72 may be pulled out from the downside of the sick or wounded's body, and then a frame of the simple mobile stretcher is removed, so that the next medical operation may be performed on the sick or wounded. For special medical working conditions, no metal parts are allowed to enter an examination room when a nuclear magnetic resonance examination is performed. In this case, a shovel type mobile stretcher or a simple mobile stretcher made of a carbon fiber or non-metal composite material is adopted, a method for manually lifting the mobile cart outside the examination room is used to move the sick or wounded onto a nuclear magnetic resonance examination table; and for a field or accident scene, due to limited conditions, it is also possible to directly use the shovel type mobile stretcher or the simple mobile stretcher for manual movement, a reasonable supporting point is selected for supporting and moving the sick or wounded without changing a lying position of the sick or wounded, in this way, secondary injury caused by moving the sick or wounded will not be caused.