Auxiliary jacking equipment for crane maintenance and use method of auxiliary jacking equipment

Abstract

The invention discloses auxiliary jacking equipment for crane maintenance and a using method thereof.The auxiliary jacking equipment comprises a base, two steering wheels, two driving wheels, a suction cup and a driving mechanism, hydraulic telescopic rods are installed on the two sides of the top of the base correspondingly, the same maintenance box is installed at the top ends of the telescopic ends of the two hydraulic telescopic rods, and the number of the steering wheels and the number of the driving wheels are both two; the two steering wheels rotate at the two corners of the bottom of the base, the two driving wheels are installed at the other two corners of the bottom of the base, the driving shaft is welded between the two driving wheels, the square frame is arranged below the base, the multiple suction cups are evenly bonded to the bottom of the base, and the driving mechanism is used for driving the two driving wheels to rotate and driving the square frame to ascend and descend. The whole equipment is convenient to fix when moving to a working position, manual operation is not needed, time and labor are saved, and displacement of the whole equipment during maintenance work is avoided; moving, fixing and loosening of the whole equipment are completed only through one piece of driving equipment in cooperation with different mechanisms, the linkage performance of the whole equipment is higher, and the cost of the driving equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of crane maintenance, and in particular to an auxiliary lifting device for crane maintenance and a use method thereof. Background Art

[0002] A crane is a mechanical device used to lift, move and place heavy objects. It usually consists of a lifting arm, ropes or chains, a pulley system and a power source. It can improve work efficiency in environments such as construction sites, ports and warehouses. Cranes require maintenance to ensure safety, reliability and efficiency. Regular inspection and maintenance can prevent mechanical failures, reduce the risk of accidents, extend the life of the equipment, and ensure the normal operation of the crane under high loads and harsh environments.

[0003] During crane maintenance, maintenance personnel need to stand on auxiliary lifting equipment to lift the maintenance personnel to the required height for crane maintenance. However, the existing auxiliary lifting equipment for crane maintenance is equipped with bottom wheels at the bottom for easy movement. The existence of the bottom wheels makes it difficult to fix the auxiliary lifting equipment when it is moved to the working position, which makes it easy for the maintenance personnel to move the entire equipment when working, which is not conducive to the maintenance work, and the maintenance personnel are at risk of falling and there is a certain danger. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose an auxiliary lifting device for crane maintenance and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An auxiliary lifting device for crane maintenance comprises: a base, both sides of the top of the base are vertically fixedly installed with hydraulic telescopic rods, and the top ends of the two hydraulic telescopic rods are horizontally fixedly installed with a same maintenance box;

[0007] Steering wheels and driving wheels, each of which is provided with two steering wheels and two driving wheels, and the two steering wheels are rotatably connected to the two corners of the bottom of the base, and the two driving wheels are fixedly installed at the other two corners of the bottom of the base, and a driving shaft is horizontally welded between the two driving wheels;

[0008] Suction cup, a square frame is horizontally arranged below the base, and a plurality of suction cups are arranged and evenly bonded to the bottom of the base;

[0009] The driving mechanism is used to drive the two driving wheels to rotate and drive the frame to rise and fall.

[0010] As a further technical solution of the present invention, a side door is hinged on one side of the maintenance box, a handrail is welded on the top of the maintenance box, telescopic sleeves are vertically welded between the four corners of the bottom of the maintenance box and the base, the telescopic sleeves can be telescopic in multiple layers, guide rods are vertically welded on the four corners of the top of the square frame, and the four guide rods pass through the base and are slidably connected to the base.

[0011] As a further technical solution of the present invention, the driving mechanism includes a forward and reverse motor, which is horizontally arranged under the base. The output end of the forward and reverse motor is horizontally fixedly connected with a driving shaft, and a first small turntable is welded to the other end of the driving shaft. A first large turntable is provided on the outside of the first small turntable, and a first circular groove is opened on one side of the first large turntable. The first small turntable is rotatably connected to the center of the first circular groove.

[0012] As a further technical solution of the present invention, a plurality of ratchets are welded on the inner wall of the first circular groove, a toggle plate is rotatably connected to the edge of one side of the first small turntable, the other end of the toggle plate abuts between two adjacent ratchets, and a limit pin and an elastic plate are respectively welded on the edge of one side of the first small turntable, and the limit pin and the elastic plate abut against the outer side and the inner side of the toggle plate respectively.

[0013] As a further technical solution of the present invention, a first driven shaft is horizontally welded to the outer side of the first large turntable, a driving bevel gear is welded to the other end of the first driven shaft, a driven bevel gear is meshed with the side of the driving bevel gear, a vertical shaft is vertically penetrated and welded at the center of the driven bevel gear, and the top end of the vertical shaft is rotatably connected to the bottom of the base.

[0014] As a further technical solution of the present invention, a large disc is welded at the bottom end of the vertical shaft, a second circular groove is opened at the bottom of the large disc, a small disc is welded at the center of the second circular groove, a part of the inner wall of the second circular groove is welded with a plurality of inner convex teeth, a part of the outer wall of the small disc is welded with a plurality of outer convex teeth, and a small gear is arranged in the second circular groove.

[0015] As a further technical solution of the present invention, the pinion gear is meshed with multiple internal convex teeth and multiple external convex teeth in sequence, a connecting shaft is vertically welded at the center of the pinion gear, a driving gear is welded at the bottom end of the connecting shaft, a driven gear is meshed on the side of the driving gear, a screw rod is vertically welded at the top of the driven gear, and the top end of the screw rod is rotatably connected to the bottom of the base.

[0016] As a further technical solution of the present invention, a C-rod is sleeved on the screw rod, the C-rod and the screw rod are connected by threads, both ends of the C-rod are welded to the top of the square frame, a linkage shaft is horizontally provided above the driving shaft, the same first belt is connected between the driving shaft and the linkage shaft, a second small turntable is welded to the other end of the linkage shaft, and a second large turntable is rotatably connected to one side of the second small turntable.

[0017] As a further technical solution of the present invention, the structures on the second large turntable and the second small turntable are exactly the same as the structures on the first large turntable and the first small turntable and are symmetrically arranged. A second driven shaft is horizontally welded at the center of the outer side of the second large turntable, and the same second belt is connected between the second driven shaft and the driving shaft.

[0018] A method for using an auxiliary lifting device for crane maintenance comprises the following specific steps:

[0019] S1: When the entire device needs to be moved, the forward and reverse motors are started to drive the driving shaft to rotate clockwise, and the driving shaft drives the first small turntable to rotate clockwise. When the first small turntable drives the toggle plate to rotate clockwise, the inner side of the toggle plate squeezes the elastic plate to deform it, and the inner side of the toggle plate loses the contact force, so that the front end of the toggle plate is separated from between the two adjacent ratchet teeth, so that when the first small turntable rotates clockwise, it will not drive the first large turntable to rotate together;

[0020] S2: At the same time, the driving shaft drives the linkage shaft to rotate clockwise through the first belt, and the linkage shaft drives the second small turntable to rotate clockwise. When the second small turntable drives the toggle plate to rotate clockwise, the inner side of the toggle plate squeezes the limit pin, but the position of the limit pin does not change, and the front end of the toggle plate does not disengage from between the two adjacent ratchet teeth, so that when the second small turntable rotates clockwise, the second large turntable is driven to rotate clockwise through the toggle plate;

[0021] S3: The first large turntable drives the second driven shaft to rotate clockwise, the second driven shaft drives the driving shaft to rotate clockwise through the second belt, the driving shaft drives the two driving wheels to rotate clockwise, and the two driving wheels cooperate with the two steering wheels to drive the entire device to move forward;

[0022] S4: When the whole equipment moves to the working position, the forward and reverse motors are started to drive the driving shaft to rotate counterclockwise, and the driving shaft drives the linkage shaft to rotate counterclockwise through the first belt, and the linkage shaft drives the second small turntable to rotate counterclockwise. Similarly, when the second small turntable rotates clockwise, it will not drive the second large turntable to rotate together, so that the driving wheel does not rotate at this time;

[0023] S5: At the same time, the driving shaft drives the first small turntable to rotate counterclockwise. Similarly, when the first small turntable rotates counterclockwise, it drives the first large turntable to rotate counterclockwise through the toggle plate, and the first large turntable drives the first driven shaft to rotate counterclockwise.

[0024] S6: The first driven shaft drives the vertical shaft to rotate through the driving bevel gear and the driven bevel gear, the vertical shaft drives the large disc to rotate, the large disc drives the small disc to rotate together, the multiple inner convex teeth on the inner wall of the second circular groove first mesh with the pinion gear to drive the pinion gear to rotate forward, and the pinion gear drives the driving gear to rotate forward through the connecting shaft;

[0025] S7: The driving gear drives the lead screw to rotate in the opposite direction through the driven gear, which drives the C-shaped rod to move downward on the lead screw. The C-shaped rod drives the frame to move downward until multiple suction cups are attached to the ground, increasing the friction between the entire device and the ground and fixing it in the working position;

[0026] S8: When the crane maintenance is completed, the forward and reverse motors are started again to drive the driving shaft to rotate counterclockwise. At this time, the multiple inner convex teeth and the small gear are meshed. The multiple outer convex teeth on the outer circumference of the small disc are meshed with the small gear to drive the small gear to rotate in the opposite direction. The small gear drives the driving gear to rotate in the opposite direction through the connecting shaft.

[0027] S9: The driving gear drives the lead screw to rotate in the positive direction through the driven gear, thereby driving the C-shaped rod to move upward on the lead screw. The C-shaped rod drives the frame to move upward so that the multiple suction cups leave the ground, thereby facilitating the movement of the entire device.

[0028] The beneficial effects of the present invention are as follows: driving wheels and steering wheels are provided so that the auxiliary lifting equipment can be conveniently moved to any position; and the entire equipment is conveniently fixed when it is moved to the working position, without the need for manual operation, saving time and effort, avoiding displacement of the entire equipment during maintenance work, facilitating maintenance work, and eliminating the risk of falling for maintenance personnel to the greatest extent; the movement, fixing and release of the entire equipment are completed by only one driving device forward and reverse motor cooperating with different mechanisms, the linkage of the entire equipment is stronger, and the cost of the driving equipment is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of an auxiliary lifting device for crane maintenance proposed by the present invention;

[0030] Figure 2 A schematic diagram of the structure of an auxiliary lifting device for crane maintenance proposed by the present invention from a bottom up view Figure 1 ;

[0031] Figure 3 A schematic diagram of the structure of an auxiliary lifting device for crane maintenance proposed by the present invention from a bottom up view Figure 2 ;

[0032] Figure 4 A schematic diagram of the bottom structure of a base of an auxiliary lifting device for crane maintenance proposed by the present invention;

[0033] Figure 5 This is a partial bottom-up structural schematic diagram of an auxiliary lifting device for crane maintenance proposed by the present invention;

[0034] Figure 6 The present invention is a schematic diagram of the partial structure of an auxiliary lifting device for crane maintenance proposed by the present invention.

[0035] In the figure: 1. Handrail; 2. Maintenance box; 3. Telescopic sleeve; 4. Driving wheel; 5. Steering wheel; 6. Guide rod; 7. Hydraulic telescopic rod; 8. Side door; 9. Driving shaft; 10. Second belt; 11. Second driven shaft; 12. Forward and reverse motor; 13. Frame; 14. Suction cup; 15. L-shaped support plate; 16. Driving gear; 17. Driven gear; 18. Screw rod; 19. C-shaped rod; 20. First belt; 21. First driven shaft; 22. Driving bevel gear; 23. Large disc; 24. Vertical axis; 25. Driven bevel gear; 26. External convex teeth; 27. Second circular groove; 28. Small disc; 29. ​​Internal convex teeth; 30. Small gear; 31. Connecting shaft; 32. Ratchet; 33. Driving shaft; 34. First circular groove; 35. First small turntable; 36. First large turntable; 37. Elastic sheet; 38. Toggle sheet; 39. Limit pin; 40. Second large turntable; 41. Linkage shaft; 42. Second small turntable; 43. Base. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Please refer to the attached Figure 1 -Attached Figure 6 , an auxiliary lifting device for crane maintenance, comprising: a base 43, both sides of the top of the base 43 are vertically fixedly installed with hydraulic telescopic rods 7, and the top ends of the two hydraulic telescopic rods 7 are horizontally fixedly installed with the same maintenance box 2;

[0038] The two hydraulic telescopic rods 7 can be activated to drive the maintenance box 2 to rise and fall, thereby driving the maintenance personnel in the maintenance box 2 to rise to a required height.

[0039] Steering wheel 5 and driving wheel 4, two steering wheels 5 and two driving wheels 4 are provided, and the two steering wheels 5 are rotatably connected to the two corners of the bottom of the base 43, and the two driving wheels 4 are fixedly installed at the other two corners of the bottom of the base 43, and a driving shaft 9 is horizontally welded between the two driving wheels 4;

[0040] Suction cup 14, a square frame 13 is horizontally arranged below the base 43, and a plurality of suction cups 14 are arranged and uniformly bonded to the bottom of the base 43;

[0041] The driving mechanism is used to drive the two driving wheels 4 to rotate and drive the frame 13 to rise and fall.

[0042] Please refer to the attached Figure 1-6 In a preferred embodiment, a side door 8 is hinged on one side of the maintenance box 2, a handrail 1 is welded on the top of the maintenance box 2, telescopic sleeves 3 are vertically welded between the four corners of the bottom of the maintenance box 2 and the base 43, the telescopic sleeves 3 can be telescopic in multiple layers, and guide rods 6 are vertically welded at the four corners of the top of the frame 13, and the four guide rods 6 all penetrate the base 43 and are slidably connected to the base 43.

[0043] The side door 8 can be opened so that the maintenance personnel can stand on the maintenance box 2 and then close the side door 8; the maintenance personnel can hold their hands on the handrail 1, and the safety rope on the maintenance personnel can also be fixed on the handrail 1; the telescopic sleeve column 3 supports the four corners of the maintenance box 2; the four guide rods 6 guide and limit the lifting of the frame 13, so that it can only be lifted vertically and cannot rotate with the screw rod 18.

[0044] Please refer to the attached Figure 1-6 In a preferred embodiment, the driving mechanism includes a forward and reverse motor 12, which is horizontally arranged below the base 43. The output end of the forward and reverse motor 12 is horizontally fixedly connected to a driving shaft 33, and a first small turntable 35 is welded to the other end of the driving shaft 33. A first large turntable 36 is arranged on the outer side of the first small turntable 35, and a first circular groove 34 is opened on one side of the first large turntable 36. The first small turntable 35 is rotatably connected to the center of the first circular groove 34.

[0045] Please refer to the attached Figure 1-6 In a preferred embodiment, a plurality of ratchet teeth 32 are welded to the inner wall of the first circular groove 34, and a toggle piece 38 is rotatably connected to the edge of one side of the first small turntable 35, and the other end of the toggle piece 38 abuts between two adjacent ratchet teeth 32. A limit pin 39 and an elastic piece 37 are respectively welded to the edge of one side of the first small turntable 35, and the limit pin 39 and the elastic piece 37 abut against the outer side and the inner side of the toggle piece 38 respectively.

[0046] Please refer to the attached Figure 1-6 In a preferred embodiment, a first driven shaft 21 is horizontally welded to the outside of the first large turntable 36, a driving bevel gear 22 is welded to the other end of the first driven shaft 21, a driven bevel gear 25 is meshed with the side of the driving bevel gear 22, a vertical shaft 24 is vertically penetrated and welded at the center of the driven bevel gear 25, and the top end of the vertical shaft 24 is rotatably connected to the bottom of the base 43.

[0047] Please refer to the attached Figure 1-6In a preferred embodiment, a large disc 23 is welded to the bottom end of the vertical shaft 24, a second circular groove 27 is opened at the bottom of the large disc 23, a small disc 28 is welded to the center of the second circular groove 27, a portion of the inner wall of the second circular groove 27 is welded with a plurality of inner convex teeth 29, a portion of the outer wall of the small disc 28 is welded with a plurality of outer convex teeth 26, and a small gear 30 is arranged in the second circular groove 27.

[0048] Please refer to the attached Figure 1-6 In a preferred embodiment, the pinion 30 is meshed with multiple inner convex teeth 29 and multiple outer convex teeth 26 in sequence. A connecting shaft 31 is vertically welded at the center of the pinion 30, a driving gear 16 is welded at the bottom end of the connecting shaft 31, a driven gear 17 is meshed on the side of the driving gear 16, a screw rod 18 is vertically welded at the top of the driven gear 17, and the top end of the screw rod 18 is rotatably connected to the bottom of the base 43.

[0049] Please refer to the attached Figure 1-6 In a preferred embodiment, a C-shaped rod 19 is sleeved on the screw rod 18, and the C-shaped rod 19 and the screw rod 18 are connected by threads. Both ends of the C-shaped rod 19 are welded to the top of the frame 13, and a linkage shaft 41 is horizontally provided above the driving shaft 9. The same first belt 20 is connected between the driving shaft 33 and the linkage shaft 41, and a second small turntable 42 is welded to the other end of the linkage shaft 41, and a second large turntable 40 is rotatably connected to one side of the second small turntable 42.

[0050] Please refer to the attached Figure 1-6 In a preferred embodiment, the structures on the second large turntable 40 and the second small turntable 42 are exactly the same as the structures on the first large turntable 36 and the first small turntable 35 and are symmetrically arranged. A second driven shaft 11 is horizontally welded at the center of the outer side of the second large turntable 40, and the same second belt 10 is connected between the second driven shaft 11 and the driving shaft 9.

[0051] An L-shaped support plate 15 is welded to the bottom of the base 43, the connecting shaft 31 passes through the L-shaped support plate 15 and is rotatably connected to the L-shaped support plate 15, a mounting plate and three support plates are welded to the bottom of the base 43, the forward and reverse motors 12 are horizontally fixedly installed on one side of the mounting plate, the linkage shaft 41 and the second driven shaft 11 are respectively rotatably connected to the side surfaces of two of the support plates, and the first driven shaft 21 passes through another support plate and is rotatably connected to the support plate.

[0052] A method for using an auxiliary lifting device for crane maintenance comprises the following specific steps:

[0053] S1: When the entire device needs to be moved, the forward and reverse motors 12 are started to drive the driving shaft 33 to rotate clockwise, and the driving shaft 33 drives the first small turntable 35 to rotate clockwise. When the first small turntable 35 drives the toggle plate 38 to rotate clockwise, the inner side of the toggle plate 38 squeezes the elastic plate 37 to deform it, and the inner side of the toggle plate 38 loses the abutting force, so that the front end of the toggle plate 38 is separated from between the two adjacent ratchet teeth 32, so that when the first small turntable 35 rotates clockwise, it will not drive the first large turntable 36 to rotate together;

[0054] S2: At the same time, the driving shaft 33 drives the linkage shaft 41 to rotate clockwise through the first belt 20, and the linkage shaft 41 drives the second small rotating disk 42 to rotate clockwise. When the second small rotating disk 42 drives the toggle plate 38 to rotate clockwise, the inner side of the toggle plate 38 squeezes the limit pin 39, but the position of the limit pin 39 does not change, and the front end of the toggle plate 38 does not disengage from between the two adjacent ratchet teeth 32, so that when the second small rotating disk 42 rotates clockwise, the second large rotating disk 40 is driven to rotate clockwise through the toggle plate 38;

[0055] S3: The first large turntable 36 drives the second driven shaft 11 to rotate clockwise, the second driven shaft 11 drives the driving shaft 9 to rotate clockwise through the second belt 10, the driving shaft 9 drives the two driving wheels 4 to rotate clockwise, and the two driving wheels 4 cooperate with the two steering wheels 5 to drive the entire device to move forward;

[0056] Driving wheels and steering wheels are provided to facilitate the movement of the auxiliary lifting equipment to any position;

[0057] S4: When the whole device moves to the working position, the forward and reverse motor 12 is started to drive the driving shaft 33 to rotate counterclockwise, and the driving shaft 33 drives the linkage shaft 41 to rotate counterclockwise through the first belt 20, and the linkage shaft 41 drives the second small turntable 42 to rotate counterclockwise. Similarly, when the second small turntable 42 rotates clockwise, it will not drive the second large turntable 40 to rotate together, so that the driving wheel 4 does not rotate at this time;

[0058] S5: At the same time, the driving shaft 33 drives the first small rotating disk 35 to rotate counterclockwise. Similarly, when the first small rotating disk 35 rotates counterclockwise, the first large rotating disk 36 is driven to rotate counterclockwise through the paddle plate 38. The first large rotating disk 36 drives the first driven shaft 21 to rotate counterclockwise.

[0059] S6: The first driven shaft 21 drives the vertical shaft 24 to rotate through the driving bevel gear 22 and the driven bevel gear 25, the vertical shaft 24 drives the large disc 23 to rotate, the large disc 23 drives the small disc 28 to rotate together, the multiple inner convex teeth 29 on the inner wall of the second circular groove 27 first mesh with the pinion 30 to drive the pinion 30 to rotate forward, and the pinion 30 drives the driving gear 16 to rotate forward through the connecting shaft 31;

[0060] S7: The driving gear 16 drives the screw rod 18 to rotate in the opposite direction through the driven gear 17, thereby driving the C-shaped rod 19 to move downward on the screw rod 18, and the C-shaped rod 19 drives the frame 13 to move downward until the multiple suction cups 14 are adsorbed on the ground, thereby increasing the friction between the entire device and the ground and fixing it in the working position;

[0061] The entire equipment is easy to fix when it is moved to the working position, without manual operation, saving time and effort, avoiding displacement of the entire equipment during maintenance work, facilitating maintenance work, and eliminating the risk of falling for maintenance personnel to the greatest extent;

[0062] S8: When the crane maintenance is completed, the forward and reverse motor 12 is started again to drive the driving shaft 33 to rotate counterclockwise. At this time, the multiple inner convex teeth 29 and the pinion 30 are meshed. The multiple outer convex teeth 26 on the outer periphery of the small disc 28 are meshed with the pinion 30 to drive the pinion 30 to rotate in the opposite direction. The pinion 30 drives the driving gear 16 to rotate in the opposite direction through the connecting shaft 31.

[0063] S9: The driving gear 16 drives the screw rod 18 to rotate forward through the driven gear 17, thereby driving the C-shaped rod 19 to move upward on the screw rod 18. The C-shaped rod 19 drives the frame 13 to move upward so that the multiple suction cups 14 leave the ground, thereby facilitating the movement of the entire device.

[0064] The movement, fixation and release of the entire equipment are completed by only one driving device's forward and reverse motors cooperating with different mechanisms. The linkage of the entire equipment is stronger and the cost of the driving equipment is reduced.

[0065] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0066] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary lifting device for crane maintenance, characterized in that: include: A base (43), wherein hydraulic telescopic rods (7) are vertically fixedly installed on both sides of the top of the base (43), and a same maintenance box (2) is horizontally fixedly installed on the top of the telescopic ends of the two hydraulic telescopic rods (7); Steering wheels (5) and driving wheels (4), wherein two steering wheels (5) and two driving wheels (4) are provided, and the two steering wheels (5) are rotatably connected to two corners of the bottom of the base (43), and the two driving wheels (4) are fixedly installed at the other two corners of the bottom of the base (43), and a driving shaft (9) is horizontally welded between the two driving wheels (4); Suction cup (14), a square frame (13) is horizontally arranged below the base (43), and a plurality of suction cups (14) are arranged and are evenly bonded to the bottom of the base (43); A driving mechanism is used to drive the two driving wheels (4) to rotate and drive the square frame (13) to rise and fall.

2. The auxiliary lifting equipment for crane maintenance according to claim 1, characterized in that: A side door (8) is hinged on one side of the maintenance box (2), a handrail (1) is welded on the top of the maintenance box (2), telescopic sleeves (3) are vertically welded between the four corners of the bottom of the maintenance box (2) and the base (43), and the telescopic sleeves (3) can be telescopic in multiple layers, and guide rods (6) are vertically welded on the four corners of the top of the frame (13), and the four guide rods (6) all penetrate the base (43) and are slidably connected to the base (43).

3. The auxiliary lifting equipment for crane maintenance according to claim 1, characterized in that: The driving mechanism comprises a forward and reverse motor (12), the forward and reverse motor (12) being horizontally arranged below the base (43), the output end of the forward and reverse motor (12) being horizontally fixedly connected to a driving shaft (33), the other end of the driving shaft (33) being welded with a first small rotating disk (35), a first large rotating disk (36) being arranged outside the first small rotating disk (35), a first circular groove (34) being arranged on one side of the first large rotating disk (36), and the first small rotating disk (35) being rotatably connected to the center of the first circular groove (34).

4. The auxiliary lifting equipment for crane maintenance according to claim 3, characterized in that: A plurality of ratchet teeth (32) are welded to the inner wall of the first circular groove (34); a toggle plate (38) is rotatably connected to the edge of one side of the first small rotating disk (35); the other end of the toggle plate (38) abuts between two adjacent ratchet teeth (32); a limit pin (39) and an elastic plate (37) are respectively welded to the edge of one side of the first small rotating disk (35); the limit pin (39) and the elastic plate (37) abut against the outer side and the inner side of the toggle plate (38) respectively.

5. The auxiliary lifting device for crane maintenance according to claim 4, characterized in that: A first driven shaft (21) is horizontally welded to the outside of the first large rotating disk (36); a driving bevel gear (22) is welded to the other end of the first driven shaft (21); a driven bevel gear (25) is meshed on the side of the driving bevel gear (22); a vertical shaft (24) vertically penetrates and is welded to the center of the driven bevel gear (25); the top end of the vertical shaft (24) is rotatably connected to the bottom of the base (43).

6. The auxiliary lifting equipment for crane maintenance according to claim 5, characterized in that: A large disc (23) is welded to the bottom end of the vertical shaft (24); a second circular groove (27) is provided at the bottom of the large disc (23); a small disc (28) is welded at the center of the second circular groove (27); a plurality of inner convex teeth (29) are welded to a portion of the inner wall of the second circular groove (27); a plurality of outer convex teeth (26) are welded to a portion of the outer wall of the small disc (28); and a small gear (30) is provided in the second circular groove (27).

7. The auxiliary lifting equipment for crane maintenance according to claim 6, characterized in that: The pinion gear (30) is meshed with a plurality of inner convex teeth (29) and a plurality of outer convex teeth (26) in sequence; a connecting shaft (31) is vertically welded at the center of the pinion gear (30); a driving gear (16) is welded at the bottom end of the connecting shaft (31); a driven gear (17) is meshed at the side of the driving gear (16); a screw rod (18) is vertically welded at the top end of the driven gear (17); and the top end of the screw rod (18) is rotatably connected to the bottom of the base (43).

8. The auxiliary lifting equipment for crane maintenance according to claim 7, characterized in that: A C-shaped rod (19) is sleeved on the screw rod (18), the C-shaped rod (19) and the screw rod (18) are connected by threads, the two ends of the C-shaped rod (19) are welded to the top of the frame (13), a linkage shaft (41) is horizontally arranged above the driving shaft (9), a first belt (20) is connected between the driving shaft (33) and the linkage shaft (41), a second small turntable (42) is welded to the other end of the linkage shaft (41), and one side of the second small turntable (42) is rotatably connected to the second large turntable (40).

9. The auxiliary lifting device for crane maintenance according to claim 8, characterized in that: The structures on the second large turntable (40) and the second small turntable (42) are completely identical to the structures on the first large turntable (36) and the first small turntable (35) and are symmetrically arranged; a second driven shaft (11) is horizontally welded at the center of the outer side of the second large turntable (40); and a second belt (10) is connected between the second driven shaft (11) and the driving shaft (9).

10. A method for using an auxiliary lifting device for crane maintenance, characterized in that: The specific steps include: S1: When the entire device needs to be moved, the forward and reverse motor (12) is started to drive the driving shaft (33) to rotate clockwise, and the driving shaft (33) drives the first small rotating disk (35) to rotate clockwise. When the first small rotating disk (35) drives the toggle plate (38) to rotate clockwise, the inner side of the toggle plate (38) squeezes the elastic plate (37) to deform it, and the inner side of the toggle plate (38) loses the contact force, so that the front end of the toggle plate (38) is separated from between two adjacent ratchet teeth (32), so that when the first small rotating disk (35) rotates clockwise, it will not drive the first large rotating disk (36) to rotate together; S2: At the same time, the driving shaft (33) drives the linkage shaft (41) to rotate clockwise through the first belt (20), and the linkage shaft (41) drives the second small rotating disk (42) to rotate clockwise. When the second small rotating disk (42) drives the toggle plate (38) to rotate clockwise, the inner side of the toggle plate (38) squeezes the limit pin (39), but the position of the limit pin (39) does not change, and the front end of the toggle plate (38) does not disengage from between two adjacent ratchet teeth (32), so that when the second small rotating disk (42) rotates clockwise, the second large rotating disk (40) is driven to rotate clockwise through the toggle plate (38); S3: The first large rotating disk (36) drives the second driven shaft (11) to rotate clockwise, the second driven shaft (11) drives the driving shaft (9) to rotate clockwise through the second belt (10), the driving shaft (9) drives the two driving wheels (4) to rotate clockwise, and the two driving wheels (4) cooperate with the two steering wheels (5) to drive the entire device to move forward; S4: When the entire device moves to the working position, the forward and reverse motor (12) is started to drive the driving shaft (33) to rotate counterclockwise, and the driving shaft (33) drives the linkage shaft (41) to rotate counterclockwise through the first belt (20), and the linkage shaft (41) drives the second small rotating disk (42) to rotate counterclockwise. Similarly, when the second small rotating disk (42) rotates clockwise, it will not drive the second large rotating disk (40) to rotate together, so that the driving wheel (4) does not rotate at this time; S5: At the same time, the driving shaft (33) drives the first small rotating disk (35) to rotate counterclockwise. Similarly, when the first small rotating disk (35) rotates counterclockwise, it drives the first large rotating disk (36) to rotate counterclockwise through the shifting piece (38), and the first large rotating disk (36) drives the first driven shaft (21) to rotate counterclockwise. S6: The first driven shaft (21) drives the vertical shaft (24) to rotate through the driving bevel gear (22) and the driven bevel gear (25), the vertical shaft (24) drives the large disc (23) to rotate, the large disc (23) drives the small disc (28) to rotate together, the multiple inner convex teeth (29) on the inner wall of the second circular groove (27) first mesh with the small gear (30) to drive the small gear (30) to rotate in the positive direction, and the small gear (30) drives the driving gear (16) to rotate in the positive direction through the connecting shaft (31); S7: The driving gear (16) drives the screw rod (18) to rotate in the opposite direction through the driven gear (17), thereby driving the C-shaped rod (19) to move downward on the screw rod (18), and the C-shaped rod (19) drives the frame (13) to move downward until the plurality of suction cups (14) are attached to the ground, thereby increasing the friction between the entire device and the ground and fixing it in the working position; S8: When the crane maintenance is completed, the forward and reverse motor (12) is started again to drive the driving shaft (33) to rotate counterclockwise. At this time, the multiple inner convex teeth (29) and the small gear (30) are meshed. The multiple outer convex teeth (26) on the outer periphery of the small disc (28) are meshed with the small gear (30) to drive the small gear (30) to rotate in the opposite direction. The small gear (30) drives the driving gear (16) to rotate in the opposite direction through the connecting shaft (31); S9: The driving gear (16) drives the screw rod (18) to rotate in the positive direction through the driven gear (17), thereby driving the C-shaped rod (19) to move upward on the screw rod (18), and the C-shaped rod (19) drives the frame (13) to move upward so that the multiple suction cups (14) leave the ground, thereby facilitating the movement of the entire device.

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