Combined supporting table structure

Abstract

The utility model provides a combined supporting table structure which comprises a supporting frame, and a horizontal fixing platform is fixedly arranged at the top of the supporting frame. The lifting plate is horizontal, and a lifting mechanism used for lifting the lifting plate is arranged on the supporting frame. A plurality of first rails are arranged on the top of the lifting plate in parallel; a plurality of first sliding blocks are arranged at the bottom of the transfer plate, and a plurality of first sliding blocks are movably buckled on each first rail; the multiple second rails are arranged on the top of the transfer plate in parallel, and the length direction of the first rails is perpendicular to the length direction of the second rails. A plurality of second sliding blocks are arranged at the bottom of the movable platform, a plurality of second sliding blocks are movably buckled on each second rail, and the movable platform is located on the side portion of the fixed platform. The combined supporting table structure provided by the utility model can reduce the use cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile component assembly and relates to an assembly support platform structure. Background Art

[0002] As the name suggests, assembly means combining two components or assemblies. For example, in the process of automobile production and maintenance, the engine and gearbox need to be combined and assembled before being installed in the car.

[0003] At present, when assembling in the market, there are usually two platforms, which are used to place two parts respectively, and most of the platforms also have fixtures for fixing the positions of parts; the position of one platform is fixed, and the position of the other platform can be moved horizontally (the two platforms can only move closer to and away from each other), so that when assembling, one of the parts can be placed (fixed by a fixture) on the fixed platform, and the other part can be placed (fixed by a fixture) on the movable platform, and then the corresponding parts are moved through the movable platform, and the assembled parts of the two parts can be connected, such as one part has an axis and a key bar, and the other part has a hole and a keyway, so that the two parts can be connected together, and finally the two parts can be fully fixed and connected by bolts. Among them, since engines and gearboxes usually have different models, such as 6At gearboxes and 8At gearboxes, not only different tooling is required for assembly, but also different assembly equipment is required (for example, different models have different heights, or cannot be aligned horizontally), which makes the use cost high. Utility Model Content

[0004] The utility model aims to provide a combined support platform structure, aiming to solve the problem of high use cost.

[0005] In order to solve the above technical problems, the utility model provides a combined support platform structure, comprising:

[0006] A support frame, wherein a horizontal fixed platform is fixedly arranged on the top of the support frame;

[0007] A lifting plate, the lifting plate is horizontal, and a lifting mechanism for lifting the lifting plate is provided on the support frame;

[0008] A first track, wherein a plurality of first tracks are arranged in parallel on the top of the lifting plate;

[0009] A transfer plate, wherein a plurality of first sliders are arranged at the bottom of the transfer plate, and a plurality of first sliders are movably buckled on each of the first rails;

[0010] A second track, wherein a plurality of the second tracks are arranged in parallel on the top of the transfer plate, and a length direction of the first track is perpendicular to a length direction of the second track;

[0011] A movable platform, wherein a plurality of second sliding blocks are arranged at the bottom of the movable platform, and a plurality of second sliding blocks are movably buckled on each of the second tracks, and the movable platform is located at the side of the fixed platform.

[0012] The utility model is further configured such that a surface of the fixed platform close to the movable platform is a fixed surface, a straight line on which the first track is located is parallel to the fixed surface, and a straight line on which the second track is located is perpendicular to the fixed surface.

[0013] The utility model is further configured such that a horizontal plate is horizontally arranged on the support frame, a plurality of stabilizing cylinders are vertically arranged on the horizontal plate, a plurality of stabilizing rods are vertically arranged on the bottom of the transfer plate, and each of the stabilizing rods is movably fitted to an inner wall of the stabilizing cylinder;

[0014] The lifting mechanism comprises a support seat horizontally arranged on the top of the horizontal plate, an adjusting screw rod horizontally passing through the support seat and rotatably connected with the support seat, and the length direction of the adjusting screw rod is perpendicular to the fixed surface;

[0015] A driving block is movably provided on the top of the horizontal plate, and the driving block is threadedly connected to the adjusting screw rod. The top of the driving block includes an inclined driving slope. A passive block is provided at the bottom of the lifting plate, and the bottom surface of the passive block is attached to the driving slope. When the driving block approaches the fixed surface, the driving slope lifts the lifting plate through the passive block.

[0016] The utility model is further configured such that a stabilizing groove with a T-shaped longitudinal section is provided in the middle of the driving inclined surface, a stabilizing portion movably matched with the stabilizing groove is provided at the bottom of the passive block, an auxiliary cylinder is threadedly connected to the outer wall of the stabilizing cylinder, the top of the auxiliary cylinder is in contact with the lifting plate, and the bottom is higher than the horizontal plate.

[0017] The utility model is further configured that a rotating worm wheel is coaxially arranged at the outer end of the adjusting screw, a worm rack is arranged on the horizontal plate, a rotating worm is vertically rotated on the worm rack, and the rotating worm is meshed with the rotating worm wheel.

[0018] The utility model is further configured such that long strips of stabilizing strips are provided on both sides of the bottom of the driving block, and two stabilizing members with L-shaped longitudinal sections are provided on the horizontal plate, and the outer ends and tops of the stabilizing strips are movably fitted to the corresponding stabilizing members.

[0019] The utility model is further configured such that an adjusting arm is hingedly provided at the outer end of the transfer plate, an operating arm is hingedly provided at the outer end of the lifting plate, the straight lines on which the adjusting arm and the operating arm are located are parallel to the fixed surface, the free end of the adjusting arm is hingedly provided to the operating arm, and an operating portion perpendicular to the operating arm is provided on the top of the operating arm.

[0020] The utility model is further configured that the distance between the free end of the regulating arm and the bottom end of the operating arm is a, and the distance between the operating portion and the bottom end of the operating arm is b, wherein b>5*a.

[0021] The utility model is further configured that a cylindrical receiving groove is provided on the top of the movable platform, two anti-rotation parts are provided on the bottom of the receiving groove, and two anti-slip parts are provided on the inner wall of the top;

[0022] It also includes an operating handle that is separable from the accommodating groove, the operating handle is L-shaped, the horizontal portion of the operating handle is higher than the movable platform, and the free end of the operating handle is located on the side above the movable platform, and the bottom end of the operating handle is provided with two fan-shaped clamping portions, the bottom end of the operating handle is located between the two anti-detachment portions, the upper sides of the two clamping portions are respectively attached to the lower sides of the two anti-detachment portions, and the two anti-rotation portions are respectively in contact with the two clamping portions to prevent the operating handle from rotating.

[0023] The utility model is further configured such that when the free end of one operating handle faces toward the fixed platform, the corresponding anti-rotation portion prevents the operating handle from rotating, and when the free end of the other operating handle faces away from the fixed platform, the corresponding anti-rotation portion prevents the operating handle from rotating.

[0024] Compared with the prior art, the utility model provides a combined assembly support platform structure, firstly, there are tooling fixtures for fixing parts on the fixed platform and the movable platform respectively (which are not the structures claimed to be protected by the present application), and then when two parts are to be combined (which may be an engine and a gearbox, or other parts or structures that need to be combined), firstly, the height of the lifting plate is adjusted by the lifting mechanism according to actual needs, and then the position of the transfer plate is moved, so that the parts on the movable platform can be opposite to the parts on the fixed platform; after all the parts are fixed, the movable platform is moved toward the fixed platform, and after the two parts are connected, the two parts are fully fixed and connected using tools such as bolts; after the connection is completed, the movable platform can be moved in the away direction, and there is no need to adjust the position of the movable platform in the vertical direction and the left and right direction, that is, when the same group of parts are to be combined, it is only necessary to move closer to and away from the movable platform and the fixed platform, and the operation is simple and convenient.

[0025] Since the height of the lifting plate is adjustable and the first track and the second track are perpendicular to each other, the movable platform can move in three directions, XYZ. In this way, even if different components are to be assembled, it is only necessary to replace the corresponding fixtures before use, which reduces the assembly cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a structure of an embodiment of a combined support platform structure of the utility model. Figure 1 ;

[0027] Figure 2 yes Figure 1 A magnified view of part A;

[0028] Figure 3 yes Figure 1 A magnified view of part B;

[0029] Figure 4 yes Figure 1 Enlarged view of part C;

[0030] Figure 5 yes Figure 1 A magnified view of part D in the middle;

[0031] Figure 6 This is a schematic diagram of a structure of an embodiment of a combined support platform structure of the utility model. Figure 2 ;

[0032] Figure 7 yes Figure 6 Enlarged view of part E in the middle;

[0033] Figure 8 It is a schematic diagram of an embodiment of a driving block and a passive block in a combined support platform structure of the utility model;

[0034] Fig. 9 It is a schematic diagram of an embodiment of an operating handle part in a combined support platform structure of the utility model.

[0035] Among them, 1. support frame; 2. fixed platform; 3. lifting plate; 4. first track; 5. transfer plate; 6. first slider; 7. second track; 8. movable platform; 9. second slider; 10. fixed surface; 11. horizontal plate; 12. stabilizing cylinder; 13. stabilizing rod; 14. support seat; 15. adjusting screw; 16. driving block; 17. driving inclined plane; 18. passive block; 19. stabilizing groove; 20. stabilizing part; 21. auxiliary cylinder; 22. rotating worm gear; 23. worm rack; 24. rotating worm; 25. stabilizing bar; 26. stabilizing member; 27. adjusting arm; 28. operating arm; 29. ​​operating part; 30. accommodating groove; 31. anti-rotation part; 32. anti-slip part; 33. operating handle; 34. locking part. DETAILED DESCRIPTION

[0036] The following is a further detailed description of a combined support platform structure proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar figure numbers in the accompanying drawings represent the same or similar parts.

[0037] A combined support platform structure, such as Figures 1 to 9 As shown, including:

[0038] A support frame 1, wherein a horizontal fixed platform 2 is fixedly arranged on the top of the support frame 1;

[0039] A lifting plate 3, wherein the lifting plate 3 is horizontal, and a lifting mechanism for lifting the lifting plate 3 is provided on the support frame 1;

[0040] A first track 4, wherein a plurality of first tracks 4 are arranged in parallel on the top of the lifting plate 3;

[0041] A transfer plate 5, wherein a plurality of first sliders 6 are disposed at the bottom of the transfer plate 5, and each of the first rails 4 is movably buckled with a plurality of the first sliders 6;

[0042] A plurality of second rails 7 are arranged in parallel on the top of the transfer plate 5, and the length direction of the first rail 4 is perpendicular to the length direction of the second rail 7;

[0043] A movable platform 8 is provided with a plurality of second sliders 9 at the bottom thereof, and a plurality of second sliders 9 are movably buckled on each of the second rails 7 . The movable platform 8 is located at the side of the fixed platform 2 .

[0044] The surface of the fixed platform 2 close to the movable platform 8 is a fixed surface 10 , the straight line where the first track 4 is located is parallel to the fixed surface 10 , and the straight line where the second track 7 is located is perpendicular to the fixed surface 10 .

[0045] A horizontal plate 11 is horizontally arranged on the support frame 1, a plurality of stabilizing cylinders 12 are vertically arranged on the horizontal plate 11, a plurality of stabilizing rods 13 are vertically arranged at the bottom of the transfer plate 5, and each of the stabilizing rods 13 is movably fitted to the inner wall of one of the stabilizing cylinders 12;

[0046] The lifting mechanism includes a support seat 14 horizontally arranged on the top of the horizontal plate 11, and a screw rod 15 is arranged to be rotatably connected with the support seat 14, and the length direction of the screw rod 15 is perpendicular to the fixed surface 10;

[0047] A driving block 16 is movably provided at the top of the horizontal plate 11, and the driving block 16 is threadedly connected to the adjusting screw rod 15. The top of the driving block 16 includes an inclined driving slope 17. A passive block 18 is provided at the bottom of the lifting plate 3, and the bottom surface of the passive block 18 is attached to the driving slope 17. When the driving block 16 approaches the fixed surface 10, the driving slope 17 lifts the lifting plate 3 through the passive block 18.

[0048] A stabilizing groove 19 with a T-shaped longitudinal section is provided in the middle of the driving inclined surface 17, and a stabilizing portion 20 movably matched with the stabilizing groove 19 is provided at the bottom of the passive block 18. An auxiliary cylinder 21 is threadedly connected to the outer wall of the stabilizing cylinder 12, and the top of the auxiliary cylinder 21 abuts against the lifting plate 3, and the bottom is higher than the horizontal plate 11.

[0049] A rotating worm wheel 22 is coaxially arranged at the outer end of the adjusting screw 15 . A worm rack 23 is arranged on the horizontal plate 11 . A rotating worm 24 is vertically rotatably arranged on the worm rack 23 . The rotating worm 24 is meshed with the rotating worm wheel 22 .

[0050] Long strip-shaped stabilizing bars 25 are provided on both sides of the bottom of the driving block 16 , and two stabilizing members 26 with L-shaped longitudinal sections are provided on the horizontal plate 11 . The outer ends and tops of the stabilizing bars 25 are movably fitted to the corresponding stabilizing members 26 .

[0051] An adjusting arm 27 is hingedly provided at the outer end of the transfer plate 5, and an operating arm 28 is hingedly provided at the outer end of the lifting plate 3. The straight lines where the adjusting arm 27 and the operating arm 28 are located are parallel to the fixed surface 10. The free end of the adjusting arm 27 is hingedly provided to the operating arm 28, and an operating portion 29 perpendicular to the operating arm 28 is provided on the top of the operating arm 28.

[0052] The distance between the free end of the adjusting arm 27 and the bottom end of the operating arm 28 is a, and the distance between the operating portion 29 and the bottom end of the operating arm 28 is b, wherein b>5*a, preferably b=6*a.

[0053] A cylindrical receiving groove 30 is provided on the top of the movable platform 8, two anti-rotation parts 31 are provided on the bottom of the receiving groove 30, and two anti-slip parts 32 are provided on the top inner wall;

[0054] It also includes an operating handle 33 that is separable from the accommodating groove 30, and the operating handle 33 is L-shaped (with an L-shaped descending portion at the end, which is convenient for operation according to the height of the worker), the horizontal part of the operating handle 33 is higher than the movable platform 8, and the free end of the operating handle 33 is located on the side above the movable platform 8, and the bottom end of the operating handle 33 is provided with two fan-shaped clamping parts 34, and the bottom end of the operating handle 33 is located between the two anti-detachment parts 32, and the upper sides of the two clamping parts 34 are respectively attached to the lower sides of the two anti-detachment parts 32, and the two anti-rotation parts 31 respectively abut against the two clamping parts 34 to prevent the operating handle 33 from rotating.

[0055] When the free end of one operating handle 33 faces toward the fixed platform 2 , the corresponding anti-rotation portion 31 prevents the operating handle 33 from rotating. When the free end of the other operating handle 33 faces away from the fixed platform 2 , the corresponding anti-rotation portion 31 prevents the operating handle 33 from rotating.

[0056] The utility model provides a combined assembly support platform structure, firstly, there are tooling fixtures for fixing parts on the fixed platform 2 and the movable platform 8 respectively (which are not the structures claimed for protection in the present application), and then when two parts are to be combined (which may be an engine and a gearbox, or other parts or structures that need to be combined), firstly, the height of the lifting plate 3 is adjusted by the lifting mechanism according to actual needs, and then the position of the transfer plate 5 is moved, so that the parts on the movable platform 8 can be directly opposite to the parts on the fixed platform 2; after all the parts are fixed, the movable platform 8 is moved toward the fixed platform 2, and after the two parts are connected, the two parts are fully fixed and connected using tools such as bolts; after the connection is completed, the movable platform 8 can be moved in the away direction, and there is no need to adjust the position of the movable platform 8 in the vertical direction and the left and right direction, that is, when the same group of parts are to be combined, it is only necessary to move closer to and farther away from the movable platform 8 and the fixed platform 2, and the operation is simple and convenient.

[0057] Since the height of the lifting plate 3 is adjustable, and since the first track 4 and the second track 7 are perpendicular to each other, the movable platform 8 can move in three directions, XYZ. In this way, even if different components are to be assembled, it is only necessary to replace the corresponding fixtures before use, thereby reducing the assembly cost.

[0058] In fact, when it is necessary to adjust the height of the lifting plate 3, the worker only needs to turn the handwheel on the rotating worm 24 and drive the rotating worm 24 to rotate. At this time, the rotating worm 24 can drive the adjusting screw 15 to rotate by rotating the worm wheel 22, so that the driving block 16 can be driven to move in the direction close to or away from the fixed surface 10; at the same time, since the driving block 16 and the passive block 18 are movably engaged with each other through the stabilizing groove 19 and the stabilizing portion 20, and the driving inclined surface 17 is inclined, when the driving block 16 moves, the lifting plate 3 can be raised or lowered; and in the lifting process, the bottom of the lifting plate 3 is attached to the inner wall of the stabilizing cylinder 12 through four stabilizing rods 13, which can further improve the horizontality of the lifting plate 3 and protect the driving block 16 and the passive block 18.

[0059] When the height is adjusted to a suitable level, the hand wheel only needs to be loosened. At this time, the adjusting screw rod 15 cannot be rotated, the position of the driving block 16 is fixed, and the stabilizing groove 19 and the stabilizing portion 20 can also maintain the height of the lifting plate 3. If the height of the lifting plate 3 is to be lowered, the auxiliary cylinder 21 needs to be rotated first so that the auxiliary cylinder 21 is lower than the lifting plate 3, and then after the height of the lifting plate 3 is suitable, the auxiliary cylinder 21 is rotated so that the top of the auxiliary cylinder 21 contacts the bottom of the lifting plate 3, thereby providing auxiliary support for the lifting plate 3.

[0060] Among them, after the two components are fixed to the fixed platform 2 and the movable platform 8 respectively, the horizontal offset distance of the two components is usually small; so when the transfer plate 5 is moved horizontally (i.e., moving the transfer plate 5 in the length direction of the first track 4), it is usually not necessary to move too much distance. In actual operation, the worker can rotate the operating arm 28 through the operating part 29, and then move the transfer plate 5 horizontally through the operating arm 28 and the adjusting arm 27; according to the lever principle, it can be known that a small force can be applied through the operating part 29, and the operation is more convenient; secondly, since the operating handle 33 is far away from the bottom of the operating arm 28, even if the operating part 29 moves a large distance, the transfer plate 5 is translated a small distance, so that the relative fine adjustment of the transfer plate 5 can be achieved, so that the adjustment accuracy is better; after adjusting the horizontal position of the transfer plate 5, it is only necessary to release the operating part 29. At this time, under the action of the static friction force of the first slider 6 and the first rail 4, the position of the transfer plate 5 can be automatically kept stable; at the same time, a positioning bolt can also be connected to the side of the first slider 6. After the first slider 6 is in a suitable position, the positioning bolt is tightened so that the positioning bolt is pressed against the side of the first rail 4.

[0061] When docking the two components, first push the operating handle 33 toward the fixed surface 10. At this time, one side of the locking portion 34 is counterclockwise (counterclockwise when viewed from top to bottom, the same below) abuts against the anti-rotation portion 31, and the top is limited by the anti-slip portion 32. In this way, the operating handle 33 can drive the movable platform 8 to translate, and the worker can push the movable platform 8 from the outside, making the operation easier.

[0062] When the assembled parts are removed and the fixed platform 2 and the movable platform 8 are separated, the operating handle 33 is first rotated clockwise to move the engaging portion 34 to the side of the anti-slip portion 32, and then the operating handle 33 and the engaging portion 34 can be directly removed from the accommodating groove 30 and inserted into the accommodating groove 30 on the other side; then the operating handle 33 is pushed in the direction away from the fixed surface 10, and at the same time, the counterclockwise side of the engaging portion 34 is in contact with the anti-rotation portion 31, and the top is limited by the corresponding anti-slip portion 32, so that the movable platform 8 can be easily driven.

[0063] In another embodiment, the operating handles 33 are fixedly connected in the two receiving grooves 30, so there is no need to transfer the operating handles 33. Since the operating handles 33 can be used in multiple devices, the use and production costs can also be reduced.

[0064] In another embodiment, the operating handle 33 is fixedly connected to the movable platform 8 .

[0065] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A combined support platform structure, characterized in that: include: A support frame (1), wherein a horizontal fixed platform (2) is fixedly arranged on the top of the support frame (1); A lifting plate (3), the lifting plate (3) being horizontal, and a lifting mechanism for lifting the lifting plate (3) being arranged on the support frame (1); A first track (4), wherein a plurality of the first tracks (4) are arranged in parallel on the top of the lifting plate (3); A transfer plate (5), wherein a plurality of first sliders (6) are arranged at the bottom of the transfer plate (5), and each of the first rails (4) is movably buckled with a plurality of the first sliders (6); A second track (7), wherein a plurality of second tracks (7) are arranged in parallel on the top of the transfer plate (5), and the length direction of the first track (4) is perpendicular to the length direction of the second track (7); A movable platform (8), wherein a plurality of second sliders (9) are arranged at the bottom of the movable platform (8), and a plurality of second sliders (9) are movably engaged on each of the second rails (7), and the movable platform (8) is located on the side of the fixed platform (2).

2. The combined support platform structure according to claim 1, characterized in that: The surface of the fixed platform (2) close to the movable platform (8) is a fixed surface (10), the straight line on which the first track (4) is located is parallel to the fixed surface (10), and the straight line on which the second track (7) is located is perpendicular to the fixed surface (10).

3. The combined support platform structure according to claim 2, characterized in that: A horizontal plate (11) is horizontally arranged on the support frame (1), a plurality of stabilizing cylinders (12) are vertically arranged on the horizontal plate (11), a plurality of stabilizing rods (13) are vertically arranged at the bottom of the transfer plate (5), and each of the stabilizing rods (13) is movably fitted to the inner wall of one of the stabilizing cylinders (12); The lifting mechanism comprises a support seat (14) horizontally arranged on the top of the horizontal plate (11), and an adjusting screw rod (15) horizontally passes through the support seat (14) and is rotatably connected to the support seat (14), wherein the length direction of the adjusting screw rod (15) is perpendicular to the fixing surface (10); A driving block (16) is movably arranged at the top of the horizontal plate (11), the driving block (16) is threadedly connected to the adjusting screw rod (15), the top of the driving block (16) includes an inclined driving slope (17), and a passive block (18) is arranged at the bottom of the lifting plate (3), the bottom surface of the passive block (18) is in contact with the driving slope (17), and when the driving block (16) approaches the fixed surface (10), the driving slope (17) raises the lifting plate (3) through the passive block (18).

4. The combined support platform structure according to claim 3, characterized in that: A stabilizing groove (19) with a T-shaped longitudinal section is provided in the middle of the driving inclined surface (17); a stabilizing portion (20) movably matched with the stabilizing groove (19) is provided at the bottom of the passive block (18); an auxiliary cylinder (21) is threadedly connected to the outer wall of the stabilizing cylinder (12); the top of the auxiliary cylinder (21) contacts the lifting plate (3) and the bottom is higher than the horizontal plate (11).

5. The combined support platform structure according to claim 4, characterized in that: A rotating worm wheel (22) is coaxially arranged at the outer end of the adjusting screw rod (15), a worm rack (23) is arranged on the horizontal plate (11), a rotating worm (24) is vertically rotatably arranged on the worm rack (23), and the rotating worm (24) is meshed with the rotating worm wheel (22).

6. The combined support platform structure according to claim 4, characterized in that: Both sides of the bottom of the driving block (16) are provided with long strip-shaped stabilizing strips (25), and the horizontal plate (11) is provided with two stabilizing members (26) both of which have L-shaped longitudinal sections, and the outer ends and tops of the stabilizing strips (25) are movably fitted to the corresponding stabilizing members (26).

7. The combined support platform structure according to claim 2, characterized in that: The outer end of the transfer plate (5) is hingedly provided with an adjustment arm (27), and the outer end of the lifting plate (3) is hingedly provided with an operating arm (28), the straight line where the adjustment arm (27) and the operating arm (28) are located is parallel to the fixed surface (10), the free end of the adjustment arm (27) is hingedly connected to the operating arm (28), and the top of the operating arm (28) is provided with an operating portion (29) perpendicular to the operating arm (28).

8. The combined support platform structure according to claim 7, characterized in that: The distance between the free end of the regulating arm (27) and the bottom end of the operating arm (28) is a, and the distance between the operating portion (29) and the bottom end of the operating arm (28) is b, wherein b>5*a.

9. The combined support platform structure according to claim 1, characterized in that: A cylindrical receiving groove (30) is provided on the top of the movable platform (8), two anti-rotation parts (31) are provided at the bottom of the receiving groove (30), and two anti-slip parts (32) are provided on the inner wall of the top; The invention also comprises an operating handle (33) which is separable from the accommodating groove (30), the operating handle (33) being L-shaped, the horizontal portion of the operating handle (33) being higher than the movable platform (8), and the free end of the operating handle (33) being located on the side above the movable platform (8), the bottom end of the operating handle (33) being provided with two fan-shaped engaging portions (34), the bottom end of the operating handle (33) being located between the two anti-slipping portions (32), the upper sides of the two engaging portions (34) being respectively attached to the lower sides of the two anti-slipping portions (32), and the two anti-rotation portions (31) respectively contacting the two engaging portions (34) to prevent the operating handle (33) from rotating.

10. The combined support platform structure according to claim 9, characterized in that: When the free end of one operating handle (33) faces toward the fixed platform (2), the corresponding anti-rotation portion (31) prevents the operating handle (33) from rotating; when the free end of the other operating handle (33) faces away from the fixed platform (2), the corresponding anti-rotation portion (31) prevents the operating handle (33) from rotating.

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