A special lift for anti-sinking cars

Abstract

The present invention discloses a special lift for cars that prevents sinking, and belongs to the technical field of lifts. The special lift for cars that prevents sinking includes a plurality of support frames, wherein a threaded rod is rotatably connected inside the support frames, wherein the threaded rod penetrates a moving box, wherein the moving box is an L-shaped structure, wherein the top and bottom surfaces of the moving box are penetrated with through holes, wherein the threaded rod is located in the through holes, wherein an anti-sinking mechanism is arranged inside the moving box, and a force area adjustment mechanism is arranged on one side of the top surface of the moving box. The present invention can provide a larger force area by adopting an anti-sinking mechanism and a force area adjustment mechanism, thereby being able to more evenly distribute the weight of the vehicle, and reducing the risk of the vehicle sliding or tilting, and at the same time, preventing the threaded rod from being worn or deformed on the surface of the threaded rod due to long-term use, thereby preventing the risk of slipping caused by the threaded rod.

Description

Technical Field

[0001] The invention belongs to the technical field of lifts, and in particular relates to a special lift for anti-sinking automobiles. Background Art

[0002] With the continuous advancement and complexity of automobile technology, many modern cars require more sophisticated maintenance and care. Lifts provide a convenient working platform, allowing maintenance personnel to better access and handle various components and systems at the bottom of the vehicle. Moreover, in vehicle repair shops or auto repair shops, lifts can save a lot of maintenance space. By lifting the vehicle vertically, the space below the ground can be effectively utilized, the capacity for vehicle maintenance and storage can be increased, and the operating efficiency of the repair shop can be improved. For auto repair shops or maintenance sites, the use of lifts not only improves internal work efficiency, but also brings better customer service experience. Customers can see the use of professional equipment, feel a higher level of service quality, and enhance their trust and satisfaction with the maintenance site.

[0003] Existing car lifts often use threaded rods for transmission when lifting cars, and the threaded rods need good lubrication protection during operation to reduce friction and wear. If the lubricating grease is too aged or the lubrication is uneven, the movement of the threaded rod may be unstable or even slip. In addition, long-term frequent use will cause fatigue of the threaded rod material, especially under high load and frequent movement. The surface of the threaded rod may be worn or deformed, which will also increase the risk of slipping. Moreover, when the car lift lifts a heavy car and then performs maintenance under the car chassis, it is easy to cause the entire car body to shake, and the weight of the vehicle cannot be effectively distributed and borne, causing the entire vehicle to shake during the lifting process, thereby causing harm to the staff. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a special anti-sinking car lift which can prevent the risk of the car sliding down during the lifting process and improve the safety.

[0005] The technical solution adopted to solve the above technical problems is: an anti-sinking car special lift, including a plurality of support frames, wherein the support frames are rotatably connected with threaded rods, wherein the threaded rods penetrate a moving box, wherein the moving box is an L-shaped structure, wherein the top and bottom surfaces of the moving box are penetrated with through holes, wherein the threaded rods are located in the through holes, wherein an anti-sinking mechanism is arranged inside the moving box, and a force area adjustment mechanism is arranged on one side of the top surface of the moving box;

[0006] The force area adjustment mechanism includes a cross fixing plate, a plurality of sliding rods are fixedly connected to the top surface of the cross fixing plate, and the plurality of sliding rods are distributed at the corners of the cross fixing plate. A rotating plate is rotatably connected to the top surface of the cross fixing plate, and the rotating plate is penetrated by a plurality of arc grooves, and the plurality of arc grooves are arranged in a circular symmetrical distribution. The sliding rod is located in the arc groove, and the sliding rod is slidably connected to the rotating plate. A through hole is opened at the center of the rotating plate, and two limit rods are arranged inside the through hole, and the limit rods are fixedly connected to the rotating plate.

[0007] Through the above technical solution, there is no need to worry about sinking problems, and workers can carry out repairs, inspections or maintenance work with greater peace of mind. This improves operational efficiency, reduces the stay time of workers and vehicles, and improves the overall efficiency and quality of work.

[0008] Furthermore, the top surface of the rotating plate is slidably connected to a driven plate, a first sliding groove is opened through the center of the driven plate, the first sliding groove is arranged in a square structure, a plurality of connecting holes are opened on the bottom surface of the driven plate, the end of the sliding rod away from the cross fixing plate is located in the connecting hole, a plurality of trapezoidal plates are arranged on the top surface of the driven plate, the trapezoidal plates are installed and fixed to the driven plate by hinges, and the hinges are located at the connection between the trapezoidal plates and the side walls of the driven plate.

[0009] Through the above technical solution, a larger force-bearing area can be provided, so that the weight of the vehicle can be distributed more evenly. Compared with traditional small-area support points, the pressure per unit area can be reduced, the wear and stress concentration on the lifting components can be reduced, and the service life of the equipment can be extended.

[0010] Furthermore, a limit block is arranged between the trapezoidal plates, the limit block is slidably connected to the trapezoidal plate, the limit block has the same size as the first slide groove, the bottom surface of the limit block is fixedly connected with a first connecting column, second slide grooves are provided on both sides of the first connecting column, the second slide grooves on both sides are arranged in opposite directions, the first connecting column is located in the through hole, the first connecting column is slidably connected to the rotating plate and the driven plate, the end of the limit rod away from the rotating plate is located in the second slide groove, and the limit rod is slidably connected to the first connecting column, two connecting rods are fixedly connected to the bottom surface of the first connecting column, and the connecting rods are slidably connected to the rotating plate and the cross fixed plate.

[0011] Through the above technical solution, the pressure when the support point contacts the vehicle can be reduced, and the risk of the vehicle sliding or tilting can be reduced. During the lifting process, the stable force area can ensure the smooth operation of the vehicle on the lift, reduce the occurrence of accidents and incidents, and improve the safety of operation.

[0012] Furthermore, the top surface of the side of the movable box away from the threaded rod is slidably connected to two first gears, the two first gears are meshed for transmission, and the two first gears are symmetrically arranged, an extension plate is welded on one side of the first gear, the extension plate of the first gear is rotatably connected to a support plate, the cross fixing plate is fixedly connected to one end of the support plate away from the first gear, the middle part of the support plate is rotatably connected to a connecting plate, and the other end of the connecting plate is rotatably connected to the movable box.

[0013] Through the above technical solution, workers can adjust the position of the support points according to specific needs to adapt to vehicles of different sizes and shapes. This flexibility enables the lift to cope with diverse repair, inspection and maintenance needs, improving the convenience and efficiency of operation.

[0014] Furthermore, one of the first gears is transmission-connected to a second gear on one side, the second gear is rotationally connected to a movable box, a knob is rotationally connected to the bottom surface of the movable box, a connecting shaft of the knob is rotationally connected to the movable box, and a through end of the knob connecting shaft is fixedly connected to the second gear.

[0015] Through the above technical solution, it can be ensured that the lifting support point is fully matched with the chassis structure of the vehicle, so that the vehicle can be lifted and supported safely and stably.

[0016] Furthermore, the anti-sinking mechanism includes a connecting block, which is slidably connected to the inner wall of the moving box, the threaded rod is threadedly connected to the connecting block, a plurality of spring columns are fixedly connected to the top of the connecting block, the other end of the spring column is fixedly connected to the inner wall of the moving box, a moving groove is opened on one side of the moving box, a second connecting column is fixedly connected to one side of the connecting block, an end of the second connecting column away from the connecting block is located in the moving groove of the moving box, and the second connecting column is slidably connected to the moving box.

[0017] The above technical solution can effectively prevent the vehicle from falling suddenly during the lifting or lowering process, greatly reducing the risk of vehicle falling caused by operating errors or equipment failures.

[0018] Furthermore, the top of the second connecting column away from the connecting block is fixedly connected with an anti-fall spring, and the other end of the anti-fall spring is fixedly connected to the inner wall of the moving box, and the second connecting column is fixedly connected with a rack at one end away from the connecting block, and the rack is transmission-connected with a third gear on both sides, the third gear is rotatably connected to the outer wall of the moving box, and the connection between the third gear and the moving box is located at the eccentric point of the third gear, and a plurality of pulleys are arranged on the top and bottom of the third gear, and the pulleys are rotatably connected to the outer wall of the moving box, and a plurality of pulleys are slidably connected with a limit bar between each two, and the limit bar is welded to the inner wall of the support frame.

[0019] Through the above technical solution, the sudden fall of the vehicle is effectively prevented, thereby reducing damage to the lifting equipment and the vehicle itself, helping to extend the service life of the equipment and reduce maintenance costs.

[0020] Furthermore, a first synchronous belt is rotatably connected to the top surface of the support frame, a synchronous wheel connecting shaft in the first synchronous belt is rotatably connected to the support frame, a through end of the synchronous wheel connecting shaft in the first synchronous belt is fixedly connected to a threaded rod, a second synchronous belt is fixedly connected between the two first synchronous belts, a synchronous wheel of the second synchronous belt is fixedly connected to the synchronous wheel of the first synchronous belt, a third synchronous belt is fixedly connected to the top surface of one of the synchronous wheels of the second synchronous belt, and one of the synchronous wheels of the third synchronous belt is fixedly connected to one of the synchronous wheels of the second synchronous belt.

[0021] Furthermore, another synchronous wheel of the third synchronous belt is rotatably connected to the top surface of the support frame, a driving motor is installed on the top of one of the support frames, the driving motor is located in the middle of the support frame, the output end of the driving motor is rotatably connected to the support frame, and the through end of the driving motor is fixedly connected to the synchronous wheel of the third synchronous belt.

[0022] Through the above technical solution, the four threaded rods can be ensured to rotate synchronously, so as to accurately control the position and height during the lifting process. This synchronization performance can avoid the problem of unbalanced lifting or inaccurate vehicle position caused by asynchrony.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The present invention adopts a force area adjustment mechanism. By rotating the rotating plate, the limit rod in the through hole rotates synchronously with the rotating plate, so that the limit rod slides along the second slide groove, and then the first connecting column together with the connecting rod and the limit block move downward at the same time. The limit block enters the first slide groove, and then the trapezoidal plate is flipped to make the four trapezoidal plates unfold and be parallel to the driven plate, thereby expanding the force area, reducing the pressure when the support point contacts the vehicle, and reducing the risk of the vehicle sliding or tilting. During the lifting process, the stable force area can ensure the smooth operation of the vehicle on the lift, reduce the occurrence of accidents and incidents, and improve the safety of operation. In addition, it can be adjusted and expanded according to the specific vehicle size, from small vehicles to large vehicles, and can provide sufficient support area, so that the lift can adapt to various sizes and weights of vehicles, thereby improving the versatility and applicability of the equipment;

[0025] (2) The present invention adopts an anti-sinking mechanism. When the threaded rod is used for a long time and the surface of the threaded rod is worn or deformed, the moving box will slide down. When the moving box slides down, the spring column and the anti-fall spring will expand, so that the connecting block and the second connecting column will move downward at the same time, thereby prompting the rack to move downward, driving the third gears on both sides to rotate. Since the eccentric part of the third gear is rotatably connected to the outer wall of the moving box, when the third gear rotates, it can squeeze and limit the limit strip, thereby preventing the car from sinking, greatly improving the safety of the lift operation, protecting the safety of the operator and the vehicle, and at the same time, avoiding serious damage to the lift and vehicle suspension system, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a first perspective structural diagram of the present invention.

[0027] Figure 2 It is a second viewing angle structural diagram of the present invention.

[0028] Figure 3 It is a structural diagram of the connection between the mobile box and the support frame of the present invention.

[0029] Figure 4 It is a structural diagram of the connection between the threaded rod and the movable box body of the present invention.

[0030] Figure 5 It is a diagram showing the internal structure of a mobile box of the present invention.

[0031] Figure 6 It is a structural diagram of the connection between the second connecting column and the rack of the present invention.

[0032] Figure 7 yes Figure 1 Enlarged structural diagram at point A.

[0033] Figure 8 It is a structural diagram of the force-bearing area adjustment mechanism of the present invention from a first viewing angle.

[0034] Fig. 9 It is a structural diagram of the force-bearing area adjustment mechanism of the present invention from a second viewing angle.

[0035] Fig.10 It is an expanded structural diagram of the force-bearing area adjustment mechanism of the present invention.

[0036] Fig.11 It is an exploded view from the first perspective of the force-bearing area adjustment mechanism of the present invention.

[0037] Fig.12 It is an exploded view from a second perspective of the force-bearing area adjustment mechanism of the present invention.

[0038] Fig.13It is an exploded view from a third perspective of the force-bearing area adjustment mechanism of the present invention.

[0039] 1. The camshaft of the embodiment of the present invention is provided with a plurality of gears, each of which is provided with a plurality of gears, and a plurality of gears are provided with a plurality of gears. The plurality of gears are provided with a plurality of gears, each of which is provided with a plurality of gears. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] like Figure 1 to Figure 2 As shown, a special anti-sinking car lift of the present embodiment comprises a plurality of support frames 1, wherein the support frames 1 are internally rotatably connected with threaded rods 2, the threaded rods 2 penetrate a moving box 7, the moving box 7 is an L-shaped structure, the moving box 7 is located inside the support frames 1, and the support frames 1 limit the moving box 7, through holes 29 are penetrated through the top and bottom surfaces of the moving box 7, the threaded rods 2 are located in the through holes 29, an anti-sinking mechanism is arranged inside the moving box 7, and there is no need to worry about the sinking problem, the staff can perform repair, inspection or maintenance work more at ease, which improves the operating efficiency, reduces the stay time of the staff and the vehicle, and improves the overall efficiency and quality of the work, and a force area adjustment mechanism 13 is arranged on one side of the top surface of the moving box 7;

[0042] like Figure 1It is shown that the top surface of the support frame 1 is rotatably connected with a first synchronous belt 3, the synchronous wheel connecting shaft in the first synchronous belt 3 is rotatably connected with the support frame 1, the through end of the synchronous wheel connecting shaft in the first synchronous belt 3 is fixedly connected with the threaded rod 2, and a second synchronous belt 4 is fixedly connected between the two first synchronous belts 3, and the synchronous wheel of the second synchronous belt 4 is fixedly connected with the synchronous wheel of the first synchronous belt 3, which can ensure that the four threaded rods 2 rotate synchronously, thereby accurately controlling the position and height during the lifting process. This synchronization performance can avoid the problems of unbalanced lifting or inaccurate vehicle position caused by asynchronism, and the top surface of one of the synchronous wheels of the second synchronous belt 4 is fixedly connected with a third synchronous belt 5, and another synchronous wheel of the third synchronous belt 5 is rotatably connected with the top surface of the support frame 1, and a driving motor 6 is installed on the top of one of the support frames 1, and the driving motor 6 is located in the middle of the support frame 1, and the output end of the driving motor 6 is rotatably connected with the support frame 1, and the through end of the driving motor 6 is fixedly connected with the synchronous wheel of the third synchronous belt 5, and one of the synchronous wheels of the third synchronous belt 5 is fixedly connected with one of the synchronous wheels of the second synchronous belt 4;

[0043] like Figures 3 to 6 The anti-sinking mechanism includes a connecting block 30, which is slidably connected to the inner wall of the mobile box 7, the threaded rod 2 is threadedly connected to the connecting block 30, a plurality of spring columns 31 are fixedly connected to the top of the connecting block 30, the other end of the spring column 31 is fixedly connected to the inner wall of the mobile box 7, a moving groove is provided on one side of the mobile box 7, a second connecting column 32 is fixedly connected to one side of the connecting block 30, an anti-fall spring 33 is fixedly connected to the top of the second connecting column 32 away from the connecting block 30, the other end of the anti-fall spring 33 is fixedly connected to the inner wall of the mobile box 7, the second connecting column 32 is fixedly connected to the end away from the connecting block 30 with a rack 36, the two sides of the rack 36 are transmission-connected with a third gear 34, and the third gear 34 is rotationally connected to the outer wall of the mobile box 7, which can effectively prevent the vehicle from falling suddenly during the lifting or lowering process. The situation greatly reduces the risk of the vehicle falling due to operational errors or equipment failures, and the connection between the third gear 34 and the mobile box 7 is located at the eccentric part of the third gear 34, and the end of the third gear 34 away from the second connecting column 32 is parallel to the limit bar 37, and a plurality of pulleys 35 are arranged on the top and bottom of the third gear 34, and the pulleys 35 are rotatably connected to the outer wall of the mobile box 7, and the plurality of pulleys 35 are slidably connected to the limit bar 37 in pairs, and the limit bar 37 is welded to the inner wall of the support frame 1, and the end of the second connecting column 32 away from the connecting block 30 is located in the moving groove of the mobile box 7, and the second connecting column 32 is slidably connected to the mobile box 7, which effectively prevents the sudden fall of the vehicle, thereby reducing the damage to the lifting equipment and the vehicle itself, and helping to extend the service life of the equipment and reduce maintenance costs;

[0044] like Figure 1 and Figure 7As shown, the top surface of the side of the mobile box 7 away from the threaded rod 2 is slidably connected to two first gears 8, the two first gears 8 are meshed and transmitted, and the two first gears 8 are symmetrically arranged, an extension plate is welded on one side of the first gear 8, one side of one of the first gears 8 is transmission-connected to a second gear 11, the second gear 11 is rotationally connected to the mobile box 7, and a knob 12 is rotationally connected to the bottom surface of the mobile box 7, and the connecting shaft of the knob 12 is rotationally connected to the mobile box 7. The staff can adjust the position of the support point according to specific needs to adapt to different sizes and shapes. Vehicle, this flexibility enables the lift to cope with diverse repair, inspection and maintenance needs, improving the convenience and efficiency of operation, the knob 12 connecting shaft through end is fixedly connected to the second gear 11, the extension plate of the first gear 8 is rotatably connected to the support plate 9, the cross fixing plate 14 is fixedly connected to the end of the support plate 9 away from the first gear 8, the middle part of the support plate 9 is rotatably connected to the connecting plate 10, and the other end of the connecting plate 10 is rotatably connected to the mobile box 7, which can ensure that the lift support point is fully matched with the chassis structure of the vehicle, so that the vehicle can be lifted and supported safely and stably;

[0045] like Figures 8 to 13As shown, the force area adjustment mechanism 13 includes a cross fixing plate 14, a plurality of slide bars 23 are fixedly connected to the top surface of the cross fixing plate 14, and the plurality of slide bars 23 are distributed at the corners of the cross fixing plate 14. A rotating plate 15 is rotatably connected to the top surface of the cross fixing plate 14, and a driven plate 16 is slidably connected to the top surface of the rotating plate 15. A first slide groove 24 is provided through the center of the driven plate 16, and the first slide groove 24 is a square structure. A plurality of connecting holes 28 are provided on the bottom surface of the driven plate 16, and one end of the slide bar 23 away from the cross fixing plate 14 is located in the connecting hole 28. The driven plate 16 The top surface of the limit block 19 is provided with a plurality of trapezoidal plates 17, and the limit blocks 19 are provided between the plurality of trapezoidal plates 17, which can reduce the pressure when the supporting point contacts the vehicle, reduce the risk of the vehicle sliding or tilting, and during the lifting process, the stable force area can ensure the smooth operation of the vehicle on the lift, reduce the occurrence of accidents and incidents, and improve the safety of operation. The limit block 19 is slidably connected to the trapezoidal plate 17, and the limit block 19 has the same size as the first slide groove 24. The bottom surface of the limit block 19 is fixedly connected with a first connecting column 25, and the two sides of the first connecting column 25 are provided with second slide grooves 27, which can Providing a larger force-bearing area, so that the weight of the vehicle can be distributed more evenly, compared with the traditional small-area support points, it can reduce the pressure per unit area, reduce the wear and stress concentration on the lifting parts, and help to extend the service life of the equipment. The second slide grooves 27 on both sides are arranged in opposite directions, the first connecting column 25 is located in the through hole 21, the first connecting column 25 is slidably connected with the rotating plate 15 and the driven plate 16, the end of the limiting rod 22 away from the rotating plate 15 is located in the second slide groove 27, and the limiting rod 22 is slidably connected with the first connecting column 25, and the bottom end surface of the first connecting column 25 is fixed Two connecting rods 26 are connected, and the connecting rods 26 are slidably connected with the rotating plate 15 and the cross fixed plate 14. The trapezoidal plate 17 is installed and fixed with the driven plate 16 through a hinge 18. The hinge 18 is located at the connection between the side walls of the trapezoidal plate 17 and the driven plate 16. The rotating plate 15 is penetrated by a plurality of arc grooves 20, and the plurality of arc grooves 20 are arranged in a circular symmetrical distribution. The sliding rod 23 is located in the arc groove 20, and the sliding rod 23 is slidably connected with the rotating plate 15. A through hole 21 is opened at the center of the rotating plate 15, and two limit rods 22 are arranged inside the through hole 21. The limit rod 22 is fixedly connected with the rotating plate 15.

[0046] The working principle of this embodiment is as follows: the support frame 1 is installed on the ground by bolts. When facing different models of cars, the staff can rotate the knob 12 to rotate the second gear 11, prompting the two first gears 8 to rotate at the same time. Under the action of the connecting plate 10, when the first gear 8 rotates, the supporting plate 9 connected at one end rotates synchronously with the first gear 8, and the connecting plate 10 will also deflect at the same time to adjust the distance between the force area adjustment mechanisms 13;

[0047] Then, by rotating the rotating plate 15, the limiting rod 22 in the through hole 21 rotates synchronously with the rotating plate 15, so that the limiting rod 22 slides along the second slide groove 27, thereby making the first connecting column 25 together with the connecting rod 26 and the limiting block 19 move downward at the same time, and the limiting block 19 enters the first slide groove 24, and then by flipping the trapezoidal plate 17, the four trapezoidal plates 17 are unfolded and parallel to the driven plate 16 to expand the force area, and then the driving motor 6 is started to drive the third synchronous belt 5 to transmit, and the second synchronous belt 4 is synchronously transmitted, so that the first synchronous belts 3 on both sides are transmitted at the same time, thereby making the threaded rod 2 rotate, so that the connecting block 30 in the moving box 7 moves upward along the linear direction of the threaded rod 2;

[0048] When the connecting block 30 moves upward, the spring column 31 and the anti-fall spring 33 are in a contracted state, and the third gear 34 is in a non-contact state with the limit bar 37, so that the pulley 35 on the outer wall of the moving box 7 moves upward along the limit bar 37, thereby lifting the car. The threaded rod 2 has a self-locking property. When the car is lifted to a certain height, the threaded rod 2 stops rotating, and the structure connected to the moving box 7 can support the car well to prevent the car from accidentally sliding down.

[0049] However, long-term frequent use will cause fatigue of the threaded rod 2 material, especially under high load and frequent movement, when the surface of the threaded rod 2 is worn or deformed, the moving box 7 will slip, and when the moving box 7 slips, the spring column 31 and the anti-fall spring 33 will expand, so that the connecting block 30 and the second connecting column 32 move downward at the same time, thereby prompting the rack 36 to move downward, driving the third gear 34 on both sides to rotate, because the eccentric part of the third gear 34 is rotatably connected to the outer wall of the moving box 7, therefore, when the third gear 34 rotates, it can squeeze the limit bar 37, so as to prevent the moving box 7 and the internal overall components from sinking, which can significantly improve the safety of the elevator and avoid injuries to the staff caused by the car slipping.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A special lift for preventing a car from sinking, comprising a plurality of support frames (1), Features: The support frame (1) is internally rotatably connected to a threaded rod (2), the threaded rod (2) penetrates a movable box (7), the movable box (7) is an L-shaped structure, the top and bottom surfaces of the movable box (7) are penetrated by through holes (29), the threaded rod (2) is located in the through holes (29), an anti-sinking mechanism is provided inside the movable box (7), and a force area adjustment mechanism (13) is provided on one side of the top surface of the movable box (7); The force-bearing area adjustment mechanism (13) comprises a cross fixing plate (14), a plurality of sliding rods (23) are fixedly connected to the top surface of the cross fixing plate (14), and the plurality of sliding rods (23) are distributed at the corners of the cross fixing plate (14). A rotating plate (15) is rotatably connected to the top surface of the cross fixing plate (14), and the rotating plate (15) is provided with a plurality of arc grooves (20) extending therethrough, and the plurality of arc grooves (20) are arranged in a circular symmetrical distribution. The sliding rod (23) is located in the arc groove (20), and the sliding rod (23) is slidably connected to the rotating plate (15). A through hole (21) is provided at the center of the rotating plate (15), and two limiting rods (22) are arranged inside the through hole (21), and the limiting rods (22) are fixedly connected to the rotating plate (15); The top surface of the rotating plate (15) is slidably connected to a driven plate (16), a first slide groove (24) is provided through the center of the driven plate (16), the first slide groove (24) is arranged in a square structure, a plurality of connection holes (28) are provided on the bottom surface of the driven plate (16), one end of the sliding rod (23) away from the cross fixing plate (14) is located in the connection hole (28), a plurality of trapezoidal plates (17) are provided on the top surface of the driven plate (16), the trapezoidal plates (17) are fixed to the driven plate (16) by hinges (18), and the hinges (18) are located at the connection between the trapezoidal plates (17) and the side walls of the driven plate (16); A limiting block (19) is arranged between the plurality of trapezoidal plates (17), the limiting block (19) is slidably connected to the trapezoidal plates (17), the limiting block (19) is of the same size as the first slide groove (24), a first connecting column (25) is fixedly connected to the bottom surface of the limiting block (19), second slide grooves (27) are provided on both sides of the first connecting column (25), the second slide grooves (27) on both sides are arranged in opposite directions, the first connecting column (25) is located in the through hole (21), the first connecting column (25) is slidably connected to the rotating plate (15) and the driven plate (16), the end of the limiting rod (22) away from the rotating plate (15) is located in the second slide groove (27), and the limiting rod (22) is slidably connected to the first connecting column (25), the bottom surface of the first connecting column (25) is fixedly connected to two connecting rods (26), the connecting rod (26) is slidably connected to the rotating plate (15) and the cross fixing plate (14); The anti-sinking mechanism comprises a connecting block (30), the connecting block (30) is slidably connected to the inner wall of the movable box (7), the threaded rod (2) is threadedly connected to the connecting block (30), a plurality of spring columns (31) are fixedly connected to the top of the connecting block (30), the other end of the spring column (31) is fixedly connected to the inner wall of the movable box (7), a movable groove is provided on one side of the movable box (7), a second connecting column (32) is fixedly connected to one side of the connecting block (30), an end of the second connecting column (32) away from the connecting block (30) is located in the movable groove of the movable box (7), and the second connecting column (32) is slidably connected to the movable box (7); The second connecting column (32) is fixedly connected to an anti-fall spring (33) at the top of a side away from the connecting block (30), and the other end of the anti-fall spring (33) is fixedly connected to the inner wall of the moving box (7). The second connecting column (32) is fixedly connected to a rack (36) at one end away from the connecting block (30). The rack (36) is transmission-connected to a third gear (34) on both sides. The third gear (34) is rotationally connected to the outer wall of the moving box (7), and the connection between the third gear (34) and the moving box (7) is located at the eccentric position of the third gear (34). A plurality of pulleys (35) are arranged at the top and bottom of the third gear (34). The pulleys (35) are rotationally connected to the outer wall of the moving box (7). The plurality of pulleys (35) are slidably connected to limit bars (37) in pairs, and the limit bars (37) are welded to the inner wall of the support frame (1).

2. A special lift for anti-sinking cars according to claim 1, It is characterized in that Two first gears (8) are slidably connected to the top surface of the side of the movable box (7) away from the threaded rod (2), the two first gears (8) are meshed and transmitted with each other, and the two first gears (8) are symmetrically arranged, an extension plate is welded to one side of the first gear (8), the extension plate of the first gear (8) is rotatably connected to a support plate (9), the cross fixing plate (14) is fixedly connected to one end of the support plate (9) away from the first gear (8), the middle part of the support plate (9) is rotatably connected to a connecting plate (10), and the other end of the connecting plate (10) is rotatably connected to the movable box (7).

3. A special lift for anti-sinking automobiles according to claim 2, It is characterized in that One side of one of the first gears (8) is drivingly connected to a second gear (11), the second gear (11) is rotationally connected to the movable box (7), a knob (12) is rotationally connected to the bottom surface of the movable box (7), a connecting shaft of the knob (12) is rotationally connected to the movable box (7), and a through-end of the connecting shaft of the knob (12) is fixedly connected to the second gear (11).

4. The anti-sinking car lift according to claim 1, Features: The top surface of the support frame (1) is rotatably connected to a first synchronous belt (3); a synchronous wheel connecting shaft in the first synchronous belt (3) is rotatably connected to the support frame (1); a through end of the synchronous wheel connecting shaft in the first synchronous belt (3) is fixedly connected to a threaded rod (2); a second synchronous belt (4) is fixedly connected between two of the first synchronous belts (3); a synchronous wheel of the second synchronous belt (4) is fixedly connected to a synchronous wheel of the first synchronous belt (3); a third synchronous belt (5) is fixedly connected to the top surface of one of the synchronous wheels of the second synchronous belt (4); and one of the synchronous wheels of the third synchronous belt (5) is fixedly connected to one of the synchronous wheels of the second synchronous belt (4).

5. A special lift for anti-sinking automobiles according to claim 4, It is characterized in that Another synchronous wheel of the third synchronous belt (5) is rotatably connected to the top surface of the support frame (1), a driving motor (6) is installed on the top of one of the support frames (1), the driving motor (6) is located in the middle of the support frame (1), the output end of the driving motor (6) is rotatably connected to the support frame (1), and the through end of the driving motor (6) is fixedly connected to the synchronous wheel of the third synchronous belt (5).

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