Adjustable hoisting device for special transportation

Abstract

The utility model discloses an adjustable hoisting device for special transportation. The adjustable hoisting device comprises a supporting disc, a hoisting steel wire rope and a pulley device, a rotating device is installed in the supporting disc, a connecting base is inserted into the middle of the supporting disc in a penetrating mode and rotationally connected with the supporting disc, the top end of the connecting base is fixedly connected with the bottom end of the workbench, an L-shaped plate and a lubricating device are installed on the upper surface of the workbench, a first locking device is installed on one side of the L-shaped plate in the vertical direction, and a pulley device is installed on the outer side of the 90-degree right-angle position of the L-shaped plate. A pulley supporting plate is mounted at the tail end of the L-shaped plate in the horizontal direction; a stabilizing device is mounted on the bottom surface of the pulley supporting plate; a pulley device; the winch is fixedly installed at the top end of the workbench, and an installation frame is installed on the outer side of the 90-degree right-angle position of the L-shaped plate. The outer side of the supporting disc is fixedly connected with the mounting base. According to the adjustable lifting device for special transportation, lifted goods can be more stable, the steel wire rope can be locked, and the steel wire rope can be lubricated.

Description

Technical Field

[0001] The utility model relates to the technical field of special transport lifting, in particular to an adjustable special transport lifting device. Background Art

[0002] Special cargo is the opposite of ordinary cargo. Ordinary cargo generally does not require special requirements for transportation, loading and unloading, and storage, while special cargo requires special measures during transportation, loading and unloading, and storage. Because the transportation process of special cargo involves different carriers, transportation routes, transportation requirements and methods, different transportation requirements, carriers, transportation routes, storage facilities, loading and unloading equipment, etc. also have some detailed differences in special cargo and its operation. When transporting special materials, lifting equipment is required to lift the materials onto the designated transport vehicle.

[0003] The lifting device in the prior art moves in the air only through a steel wire rope after lifting, which causes the cargo to tilt easily during the lifting process and the cargo to shake greatly, thereby affecting the stability of the lifting. When the winch fails, the steel wire rope cannot be fixed well. During use, the steel wire rope usually needs to be lubricated with a brush, which is very dangerous and inefficient. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an adjustable lifting device for special transportation, which can make the lifted goods more stable, lock the wire rope, and automatically lubricate the wire rope, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: an adjustable lifting device for special transportation, comprising a support plate and a pulley device;

[0006] A rotating device is installed in the support plate, a connecting seat is inserted in the middle of the support plate, the connecting seat is rotatably connected to the support plate, the top of the connecting seat is fixedly connected to the bottom end of the workbench, an L-shaped plate and a lubrication device are installed on the upper surface of the workbench, a locking device is installed on one side of the vertical direction of the L-shaped plate, a pulley device is installed on the outer side of the 90° right angle of the L-shaped plate, a pulley support plate is installed at the end of the horizontal direction of the L-shaped plate, and a stabilizing device is installed on the bottom surface of the pulley support plate;

[0007] The pulley device comprises a winch, a pulley 1 and a pulley 2, wherein the winch is fixedly mounted on the top of the workbench, a mounting frame is mounted on the outside of the L-shaped plate at a 90° right angle, a pulley 1 is slidably connected in the mounting frame, two pulleys 2 are rotatably mounted on the pulley support plate, the two pulleys 2 are arranged opposite to each other, the pulley support plate is concave, a locking groove is opened in the middle of the pulley support plate at the concave part, and a locking device 2 is installed in the locking groove;

[0008] The outer side of the support plate is fixedly connected to the mounting seat.

[0009] The winch controls the length of the lifting wire rope and is the main power source for lifting cargo. Pulley one and pulley two reduce resistance and wear of the lifting wire rope during transmission. The second locking device in the locking groove is used to fix the position of the cargo on the lifting wire rope when the winch fails.

[0010] Furthermore, the stabilizing device includes a telescopic rod, a support plate, a lifting chain, a lifting buckle, and a support rod. Four telescopic rods are mounted at the four corners of the bottom end of the pulley support plate. The bottom ends of the four telescopic rods are fixedly connected to the four corners of the support plate. Four sliding sleeves are fixedly mounted on both sides of the end of the support plate connected to the telescopic rods. The four sliding sleeves are connected to the lifting chain, and a lifting buckle is fixedly mounted below the lifting chain. A through hole is provided at the end of the support plate away from the telescopic rod. The support rod passes through the through hole and slides in connection. The support rod is fixedly mounted between the workbench and the horizontal direction of the L-shaped plate. The telescopic rod stabilizes the support plate, and the support plate slides smoothly on the support rod without shaking, which can reduce the longitudinal force on the telescopic rod and protect the telescopic rod. The sliding sleeve, lifting chain, and lifting buckle cooperate to lift the cargo.

[0011] Furthermore, the locking device 1 includes a locking motor 1, a locking gear, a rack, a connecting rod, a fixed block 1, a locking frame and a fixed block 2. A locking motor slot is provided in the vertical L-shaped plate, and a locking motor 1 is installed in the locking motor slot. The output end of the locking motor 1 is fixedly connected to the locking gear, and a rack meshing with the locking gear is provided below the locking gear. A slider 1 is provided at the bottom of the rack, and a slide groove 1 corresponding to the slider 1 is provided at the top of the locking frame. The rack is slidably connected above the locking frame, and the locking frame is fixed The locking frame is installed on one side of the vertical direction of the L-shaped plate. A second fixed block is provided on one side of the locking frame. The second fixed block corresponds to the first fixed block. The second fixed block is in the shape of an inverted gourd. The first fixed block is in the shape of a gourd, and the shape of the second fixed block matches that of the first fixed block. A second slide is provided on one side wall of the locking frame. One end of the rack is fixedly connected to one end of the connecting rod. The bottom end of the connecting rod is fixedly connected to the first fixed block. A second slider is installed on one side of the middle of the first gourd-shaped fixed block. The second slider slides in the second slide on the side wall of the locking frame. When the locking motor is started, the locking gear rotates, causing the rack to move left and right at the upper end of the locking frame. The slider prevents the rack from deflecting in the direction of movement. The rack moves the second fixed block, which prevents the rack from deflecting in the direction of movement. The second fixed block is in the shape of an inverted gourd and is fixedly installed in the locking frame. The first fixed block is in the shape of a gourd, which can increase the contact area with the lifting wire rope and improve the locking effect.

[0012] Furthermore, the rotating device includes a rotating motor, a pinion, and a large gear. The support plate has a rotating slot defined within it, and a rotating motor slot defined at the lower end of the rotating slot. The rotating motor is mounted within the rotating motor slot, and the output end of the rotating motor is fixedly connected to the pinion. The large gear is rotatably mounted within the support plate, meshing with the pinion, and the top of the large gear is fixedly connected to the connecting base. When the rotating motor is activated, the pinion begins to rotate, causing the large gear to begin rotating in a direction opposite to the direction of rotation of the pinion. The connecting base then rotates, causing the device above to also rotate.

[0013] Furthermore, the lubrication device includes an oil tank, a pressure relief valve, an oil pump, and an oil pipe. The oil tank is installed on the top of the workbench. The oil pump and the pressure relief valve are installed on the top of the oil tank. The oil inlet of the oil pump is fixedly connected to the bottom of the oil tank. The oil outlet of the oil pump is fixedly connected to one end of the oil pipe. The oil pipe is connected to the oil filling ports of the winch, pulley 1, and pulley 2 respectively through the oil distribution pipe. The oil tank contains lubricating oil. The pressure relief valve can make the pressure in the oil tank the same as the external pressure. The oil pump draws the lubricating oil from the oil tank and lubricates the lifting wire ropes on the winch, pulley 1, and pulley 2 through the oil pipe, thereby reducing the friction between the lifting wire ropes and better preventing the lifting wire ropes from wearing.

[0014] Furthermore, the lifting wire rope is wound around a winch, which passes through locking device 1, pulley 1, pulley 2, and locking device 2 and is fixedly connected to the top of the support plate. The winch controls the total length of the lifting wire rope. The lifting wire rope passes through locking device 1 and locking device 2 to facilitate locking the lifting wire rope. Pulley 1 and pulley 2 reduce friction during the movement of the lifting wire rope.

[0015] Furthermore, the second locking device includes a second locking motor, a rotating disk, a locking shaft, a connecting disk, and a bearing. The second locking motor is installed on one side of the pulley support plate. The output shaft of the second locking motor is fixedly connected to the rotating disk. The rotating disk is installed on one side of the locking groove. The rotating disk is equipped with a locking shaft. There are four locking shafts, and the four locking shafts are symmetrically distributed in groups of two. The lifting wire rope passes between the locking shafts. One end of the two groups of locking shafts is fixedly connected to the connecting disk. A rotating groove is provided in the middle of the bearing. The connecting disk rotates in the rotating groove. The bearing is fixedly installed on the other side of the locking groove, and the bearing and the rotating disk are symmetrically distributed in the locking groove. After the second locking motor is started, the rotating disk rotates, and the locking shaft on the rotating disk rotates around the center of the rotating disk, winding the lifting wire rope passing between the locking shafts, so that the lifting wire rope cannot continue to move downward.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the adjustable special transport lifting device has the following advantages:

[0017] 1. This adjustable special transport lifting device lifts the cargo through the lifting chains and lifting buckles on both sides of the support plate. The telescopic rod and support plate prevent the cargo from shaking significantly during the lifting process, greatly improving the lifting stability.

[0018] 2. This adjustable special transport lifting device clamps the lifting wire rope through fixed blocks 1 and 2, and winds the lifting wire rope through the locking shaft to prevent the lifting wire rope from moving downward.

[0019] 3. This adjustable special transport lifting device lubricates the lifting wire rope with lubricating oil through an oil pump, which can reduce friction and play a better anti-wear role. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a rear view structural diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0023] Figure 4 This is a structural diagram of a locking device of the utility model;

[0024] Figure 5 This is a schematic cross-sectional view of the locking device of the present invention;

[0025] Figure 6 For this utility model Figure 5 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 7 This is a schematic diagram of the structure of the rotating device of the utility model;

[0027] Figure 8 This is a schematic cross-sectional view of the rotating device of the present invention;

[0028] Figure 9 This is a schematic diagram of the second structure of the locking device of the utility model;

[0029] Figure 10 This is a schematic diagram of the second cross-sectional structure of the locking device of the present invention.

[0030] In the figure: 1 support plate, 2 pulley device, 3 stabilizing device, 4 locking device 1, 5 rotating device, 6 lubricating device, 7 locking device 2, 11 connecting seat, 12 workbench, 13 lifting wire rope, 15 mounting seat, 16 L-shaped plate, 17 pulley support plate, 21 winch, 22 pulley 1, 23 pulley 2, 31 telescopic rod, 32 support plate, 33 lifting chain, 34 lifting buckle, 35 support rod, 41 locking motor 1, 42 locking gear, 43 rack, 44 connecting rod, 45 fixing block 1, 46 locking frame, 47 fixing block 2, 51 rotating motor, 52 small gear, 53 large gear, 61 oil tank, 62 pressure relief valve, 63 oil pump, 64 oil pipe, 71 locking motor 2, 72 rotating plate, 73 locking shaft, 74 connecting plate, 75 bearing. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-10 , this embodiment provides a technical solution: an adjustable special transportation lifting device, including a support plate 1, a lifting wire rope 13 and a pulley device 2;

[0033] A rotating device 5 is installed in the support disk 1, and a connecting seat 11 is inserted into the middle of the support disk 1. The connecting seat 11 is rotatably connected to the support disk 1. The top of the connecting seat 11 is fixedly connected to the bottom end of the workbench 12. An L-shaped plate 16 and a lubricating device 6 are installed on the upper surface of the workbench 12. A locking device 4 is installed on one side of the L-shaped plate 16 in the vertical direction. A pulley device 2 is installed on the outside of the 90° right angle of the L-shaped plate 16. A pulley support plate 17 is installed at the end of the L-shaped plate 16 in the horizontal direction. A stabilizing device 3 is installed on the bottom surface of the pulley support plate 17;

[0034] The pulley device 2 comprises a hoist 21, a pulley 1 22 and a pulley 23. The hoist 21 is fixedly mounted on the top of the workbench 12. A mounting frame is mounted on the outside of the 90° right angle of the L-shaped plate 16. A pulley 1 22 is slidably connected to the mounting frame. Two pulleys 23 are rotatably mounted on the pulley support plate 17. The two pulleys 23 are arranged opposite to each other. The pulley support plate 17 is concave. A locking groove is opened in the middle of the pulley support plate 17 at the concave portion. A locking device 2 7 is mounted in the locking groove.

[0035] The outer side of the support plate 1 is fixedly connected to the mounting seat 15 .

[0036] The winch 21 controls the length of the lifting wire rope 13 and is the main power source for lifting goods. Pulley 1 22 and pulley 2 reduce the resistance and wear of the lifting wire rope 13 during the transmission process. The locking device 2 7 in the locking groove is used to fix the position of the goods on the lifting wire rope 13 when the winch 21 fails.

[0037] Stabilizing device 3 includes a telescopic rod 31, a support plate 32, a chain 33, a hook 34, and a support rod 35. Four telescopic rods 31 are mounted at the four corners of the bottom end of pulley support plate 17. The bottom ends of the four telescopic rods 31 are fixedly connected to the four corners of support plate 32. Four sliding sleeves are fixedly mounted on both sides of the end of support plate 32 connected to the telescopic rod 31. These sliding sleeves are connected to the chain 33. A hook 34 is fixedly mounted below the chain 33. A through hole is provided at the end of support plate 32 away from the telescopic rod 31. A support rod 35 passes through this through hole and slides into the connection. Support rod 35 is fixedly mounted horizontally between workbench 12 and L-shaped plate 16. The telescopic rod 31 stabilizes support plate 32. Support plate 32 slides smoothly on support rod 35, reducing the longitudinal force on telescopic rod 31 and protecting it. The sliding sleeve, chain 33, and hook 34 work together to lift the cargo.

[0038] The locking device 14 includes a locking motor 141, a locking gear 42, a rack 43, a connecting rod 44, a fixing block 145, a locking frame 46 and a fixing block 2 47. A locking motor slot is provided in the vertical L-shaped plate 16, and a locking motor 141 is installed in the locking motor slot. The output end of the locking motor 141 is fixedly connected to the locking gear 42. A rack 43 is provided below the locking gear 42 and meshes with the locking gear 42. A slider 1 is provided at the bottom of the rack 43. A slide groove 1 corresponding to the slide 1 is provided at the top of the locking frame 46. The rack 43 is slidably connected above the locking frame 46, and the locking frame 46 is fixedly installed. On one side of the L-shaped plate 16 in the vertical direction, a fixing block 2 47 is provided on one side of the locking frame 46. The fixing block 2 47 corresponds to the fixing block 1 45. The fixing block 2 47 is in the shape of an inverted gourd, and the fixing block 1 45 is in the shape of a gourd, and the shape of the fixing block 2 47 matches that of the fixing block 1 45. A sliding groove 2 is provided on one side wall of the locking frame 46. One end of the rack 43 is fixedly connected to one end of the connecting rod 44, and the bottom end of the connecting rod 44 is fixedly connected to the fixing block 1 45. A slider 2 is installed on one side of the middle part of the gourd-shaped fixing block 1 45, and the slider 2 is slidably installed in the sliding groove 2 on the side wall of the locking frame 46. The locking motor 41 is started, and the locking gear 42 rotates, causing the rack 43 to move left and right at the upper end of the locking frame 46. The slider 1 prevents the rack 43 from deflecting in its moving direction. The rack 43 moves the fixed block 2 47. The fixed block 2 47 prevents the rack 43 from deflecting in its moving direction. The fixed block 2 47 is in an inverted gourd shape and is fixedly installed in the locking frame 46. The fixed block 1 45 is in a gourd shape, which can increase the contact area with the lifting wire rope 13 and improve the locking effect.

[0039] The rotating device 5 includes a rotating motor 51, a small gear 52, and a large gear 53. A rotating slot is defined within the support plate 1, with a rotating motor slot defined at the lower end. The rotating motor 51 is mounted within the rotating motor slot. The output end of the rotating motor 51 is fixedly connected to the small gear 52. The large gear 53 is rotatably mounted within the support plate 1, meshing with the small gear 52. The top end of the large gear 53 is fixedly connected to the connecting base 11. When the rotating motor 51 is activated, the small gear 52 begins to rotate, causing the large gear 53 to rotate in the opposite direction of the small gear 52. The connecting base 11 then rotates, causing the device above to rotate as well.

[0040] The lubricating device 6 includes an oil tank 61, a pressure relief valve 62, an oil pump 63, and an oil pipe 64. The oil tank 61 is mounted on the top of the workbench 12. The oil pump 63 and the pressure relief valve 62 are mounted on the top of the oil tank 61. The oil inlet of the oil pump 63 is fixedly connected to the bottom of the oil tank 61, and the oil outlet of the oil pump 63 is fixedly connected to one end of the oil pipe 64. The oil pipe 64 is connected to the oil filling ports of the winch 21, pulley 1 22, and pulley 2 23 through oil distribution pipes. The oil tank 61 contains lubricating oil. The pressure relief valve 62 can make the pressure inside the oil tank 61 the same as the external pressure. The oil pump 63 draws the lubricating oil from the oil tank 61 and lubricates the hoisting wire rope 13 on the winch 21, pulley 1 22, and pulley 2 23 through the oil pipe 64, reducing the friction between the hoisting wire ropes 13 and providing better wear protection for the hoisting wire ropes 13.

[0041] The lifting wire rope 13 is wound on the hoist 21. The lifting wire rope 13 passes through the locking device 1 4, the pulley 1 22, the pulley 2 23 and the locking device 2 7 and is fixedly connected to the top of the support plate 32. The hoist 21 controls the total length of the lifting wire rope 13. The lifting wire rope 13 passes through the locking device 1 4 and the locking device 2 7 to facilitate the locking effect of the lifting wire rope 13. The pulley 1 22 and the pulley 2 23 reduce the friction of the lifting wire rope 13 during movement.

[0042] The locking device 2 7 includes a locking motor 2 71, a rotating disk 72, a locking shaft 73, a connecting disk 74 and a bearing 75. The locking motor 2 71 is installed on one side of the pulley support plate 17. The output shaft of the locking motor 2 71 is fixedly connected to the rotating disk 72. The rotating disk 72 is installed on one side of the locking groove. The locking shaft 73 is installed on the rotating disk 72. There are four locking shafts 73, and the four locking shafts 73 are symmetrically distributed in a group of two, and the lifting wire rope 13 passes through the locking shafts 73. One end of the two groups of locking shafts 73 is fixedly connected to the connecting disk 74. A rotating groove is provided in the middle of the bearing 75, and the connecting disk 74 rotates in the rotating groove. The bearing 75 is fixedly installed on the other side of the locking groove, and the bearing 75 and the rotating disk 72 are symmetrically distributed in the locking groove. After the locking motor 2 71 is started, the rotating disk 72 rotates, and the locking shaft 73 on the rotating disk 72 rotates around the center of the rotating disk 72, winding the lifting wire rope 13 passing through the locking shaft 73, so that the lifting wire rope 13 cannot continue to move downward.

[0043] The working principle of the adjustable special transport lifting device provided by the utility model is as follows:

[0044] When in use, the cargo is fixed by the cooperation of the sliding sleeve, the lifting chain 33 and the lifting buckle 34, the winch 21 is started, the lifting wire rope 13 is wound on the winch 21, and the lifting wire rope 13 passes through the locking device 14, the pulley 122, the pulley 23 and the locking device 27 and is fixedly connected to the top of the support plate 32 to control the lifting and movement of the cargo. The pulley 122 and the pulley 2 reduce the resistance and wear of the lifting wire rope 13 during the transmission process. The locking groove is the path for the lifting wire rope 13 to be connected to the support plate 32. The stop groove does not contact the lifting wire rope 13, and the telescopic rod 31 prevents the cargo from shaking greatly during the movement in the air. The support plate 32 also protects the telescopic rod 31, reducing the uneven force on the cargo and causing lateral force on the telescopic rod 31. The lifting wire rope 13 controls the height of the support plate 32, and the support plate 32 controls the height of the lifted cargo, thereby lifting the cargo. After the rotating motor 51 is started, the small gear 52 rotates, causing the large gear 53 to rotate as well, and the device on the large gear 53 will also rotate to change the cargo. The oil tank 61 is installed at the top of the workbench 12. The pressure relief valve 62 can make the pressure in the oil tank 61 the same as that in the outside world. There is lubricating oil in the oil tank 61. The oil pump 63 lubricates the lubricating oil from the oil pipe 64 to the hoisting machine 21, the pulley 1 22 and the lifting wire rope 13 on the pulley 2 23, reducing the friction between the lifting wire ropes 13 and playing a better anti-wear role for the lifting wire rope 13. When the hoisting machine 21 fails or has other problems and cannot control the length of the lifting wire rope 13, the hoisting machine 21 The lifting wire rope 13 passes through the locking frame 46, and the locking motor 41 is started to rotate the locking gear 42 and move the rack 43, so that the fixed block 45 and the fixed block 2 47 lock the lifting wire rope 13. At the same time, after the locking motor 2 71 is started, the rotating disk 72 rotates, and the locking shaft 73 on the rotating disk 72 rotates around the center of the rotating disk 72, winding the lifting wire rope 13 passing between the locking shafts 73, so that the lifting wire rope 13 cannot continue to move downward, thereby fixing the lifting wire rope 13.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable lifting device for special transportation, characterized by: It comprises a support plate (1), a lifting wire rope (13) and a pulley device (2); The support plate (1) is provided with a rotating device (5), a connecting seat (11) is inserted in the middle of the support plate (1), the connecting seat (11) is rotatably connected to the support plate (1), the top of the connecting seat (11) is fixedly connected to the bottom of the workbench (12), an L-shaped plate (16) and a lubricating device (6) are installed on the upper surface of the workbench (12), a locking device (4) is installed on one side of the vertical direction of the L-shaped plate (16), a pulley device (2) is installed on the outer side of the 90° right angle of the L-shaped plate (16), a pulley support plate (17) is installed at the end of the horizontal direction of the L-shaped plate (16), and a stabilizing device (3) is installed on the bottom surface of the pulley support plate (17); The pulley device (2) comprises a winch (21), a pulley 1 (22) and a pulley 2 (23), wherein the winch (21) is fixedly mounted on the top of the workbench (12), a mounting frame is mounted on the outside of the L-shaped plate (16) at a 90° right angle, and a pulley 1 (22) is slidably connected to the mounting frame; Two pulleys (23) are rotatably mounted on the pulley support plate (17). The two pulleys (23) are arranged opposite to each other. The pulley support plate (17) is concave. A locking groove is provided in the middle of the concave portion of the pulley support plate (17). A locking device (7) is installed in the locking groove. The outer side of the support plate (1) is fixedly connected to the mounting seat (15).

2. The adjustable lifting device for special transportation according to claim 1, characterized in that: The stabilizing device (3) comprises a telescopic rod (31), a support plate (32), a hanging chain (33), a hanging buckle (34) and a support rod (35). Four telescopic rods (31) are installed at the four corners of the bottom end of the pulley support plate (17). The bottom ends of the four telescopic rods (31) are fixedly connected to the four corners of the support plate (32) respectively. Slide sleeves are fixedly installed on both sides of one end of the support plate (32) connected to the telescopic rod (31). There are four slide sleeves. The four slide sleeves are connected to the hanging chain (33). A hanging buckle (34) is fixedly installed below the hanging chain (33). A through hole is provided at one end of the support plate (32) away from the telescopic rod (31). The support rod (35) passes through the through hole and is slidably connected. The support rod (35) is fixedly installed between the workbench (12) and the L-shaped plate (16) in the horizontal direction.

3. The adjustable lifting device for special transportation according to claim 1, characterized in that: The locking device (4) comprises a locking motor (41), a locking gear (42), a rack (43), a connecting rod (44), a fixing block (45), a locking frame (46) and a fixing block (47). A locking motor slot is provided in the vertical L-shaped plate (16), a locking motor (41) is installed in the locking motor slot, an output end of the locking motor (41) is fixedly connected to the locking gear (42), a rack (43) meshing with the locking gear (42) is provided below the locking gear (42), a slider (43) is provided at the bottom, a sliding groove (43) corresponding to the sliding block (46) is provided at the top of the locking frame (46), the rack (43) is slidably connected above the locking frame (46), and the locking frame (4 6) is fixedly installed on one side of the vertical direction of the L-shaped plate (16), and a fixed block 2 (47) is provided on one side of the locking frame (46). The fixed block 2 (47) corresponds to the fixed block 1 (45). The fixed block 2 (47) is gourd-shaped, and the fixed block 1 (45) is inverted gourd-shaped. The shape of the fixed block 2 (47) matches that of the fixed block 1 (45). A sliding groove 2 is provided on one side wall of the locking frame (46). One end of the rack (43) is fixedly connected to one end of the connecting rod (44), and the bottom end of the connecting rod (44) is fixedly connected to the fixed block 1 (45). A slider 2 is installed on one side of the middle part of the inverted gourd-shaped fixed block 1 (45). The slider 2 is slidably installed in the sliding groove 2 on the side wall of the locking frame (46).

4. The adjustable lifting device for special transportation according to claim 1, characterized in that: The rotating device (5) comprises a rotating motor (51), a small gear (52) and a large gear (53). A rotating groove is provided in the supporting plate (1). A rotating motor groove is provided at the lower end of the rotating groove. The rotating motor (51) is installed in the rotating motor groove. The output end of the rotating motor (51) is fixedly connected to the small gear (52). The large gear (53) is rotatably installed in the supporting plate (1). The large gear (53) is meshed with the small gear (52). The top end of the large gear (53) is fixedly connected to the connecting seat (11).

5. The adjustable lifting device for special transportation according to claim 1, characterized in that: The lubricating device (6) includes an oil tank (61), a pressure relief valve (62), an oil pump (63) and an oil pipe (64). The oil tank (61) is installed on the top of the workbench (12). The oil pump (63) and the pressure relief valve (62) are installed on the top of the oil tank (61). The oil inlet of the oil pump (63) is fixedly connected to the bottom of the oil tank (61). The oil outlet of the oil pump (63) is fixedly connected to one end of the oil pipe (64). The oil pipe (64) is connected to the oil filling ports at the winch (21), pulley 1 (22) and pulley 2 (23) respectively through the oil distribution pipe.

6. The adjustable lifting device for special transportation according to claim 1, characterized in that: The lifting wire rope (13) is wound on the winch (21), and the lifting wire rope (13) passes through the locking device 1 (4), the pulley 1 (22), the pulley 2 (23) and the locking device 2 (7) and is fixedly connected to the top of the support plate (32).

7. The adjustable lifting device for special transportation according to claim 6, characterized in that: The locking device 2 (7) comprises a locking motor 2 (71), a rotating disk (72), a locking shaft (73), a connecting disk (74) and a bearing (75). The locking motor 2 (71) is mounted on one side of the pulley support plate (17). The output shaft of the locking motor 2 (71) is fixedly connected to the rotating disk (72). The rotating disk (72) is mounted on one side of the locking groove. A locking shaft (73) is mounted on the rotating disk (72). There are four locking shafts (73), and the four locking shafts (73) are symmetrically distributed in pairs. The lifting wire rope (13) passes through between the locking shafts (73). One end of the two groups of locking shafts (73) is fixedly connected to the connecting disk (74). A rotating groove is opened in the middle of the bearing (75). The connecting disk (74) rotates in the rotating groove. The bearing (75) is fixedly mounted on the other side of the locking groove, and the bearing (75) and the rotating disk (72) are symmetrically distributed in the locking groove.

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