A high-altitude maintenance crane and its use method

Abstract

A high-altitude maintenance crane includes a hoisting drive assembly, a chain assembly, a boom drive assembly, a boom assembly, a mounting frame assembly, and a hook. The hook is connected to the output end of the chain assembly, the chain assembly is connected to the output end of the hoisting drive assembly and is located within the boom assembly. The hoisting drive assembly is mounted on the upper side of the mounting frame assembly. One end of the boom assembly is connected to the chain of the chain assembly and the other end is connected to the output end of the boom drive assembly. The boom drive assembly is mounted on the upper side of the mounting frame assembly and is located above the hoisting drive assembly. This design occupies a small space, has a simple structure, and is highly reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a high-altitude operation maintenance crane and a use method thereof. Background Art

[0002] With the rapid development of science and technology, the marine industry is becoming increasingly prosperous, and the number of offshore engineering equipment has increased, promoting the development of marine resources. Offshore engineering equipment is typically large and tall, with many devices, and much of this equipment is located at high altitudes. If a problem arises, timely maintenance is required, which often requires hoisting personnel and materials to designated locations, ensuring full safety during high-altitude operations.

[0003] Existing lifting and maintenance equipment is often large in size and takes up a lot of space. The operation sites are mostly on offshore platforms or ship decks, resulting in limited working space. At the same time, the disassembly and assembly of lifting and maintenance equipment also directly affects the use of marine engineering equipment. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects and problems of the prior art such as large space occupation and complex structure, and to provide a high-altitude maintenance crane with small space occupation and simple structure and a method for using the crane.

[0005] To achieve the above objectives, the technical solution of the present invention is:

[0006] A high-altitude maintenance crane includes a lifting drive assembly, a chain assembly, a boom drive assembly, an arm assembly, a mounting frame assembly, and a hook. The hook is connected to the output end of the chain assembly and is located inside the boom assembly. The chain assembly is connected to the output end of the lifting drive assembly. The lifting drive assembly is installed on the upper side of the mounting frame assembly. One end of the boom assembly is connected to the chain of the chain assembly, and the other end is connected to the output end of the boom drive assembly. The boom drive assembly is installed on the upper side of the mounting frame assembly and is located above the lifting drive assembly.

[0007] The mounting frame assembly includes a first horizontal mounting frame, a second horizontal mounting frame, a vertical mounting frame, and an upper mounting frame. The vertical mounting frame is connected to the upper side of the first horizontal mounting frame, the second horizontal mounting frame is connected to the upper side of the first horizontal mounting frame through the vertical mounting frame, and the upper mounting frame is connected to the upper side of the vertical mounting frame and is arranged along the length direction of the chain assembly.

[0008] The hoisting drive assembly includes a main drive servo motor, a first mounting frame, and a main motor bearing seat. The first mounting frame and the main motor bearing seat are both connected to the upper side of the second horizontal mounting frame. The main drive servo motor is connected to the upper side of the first mounting frame, and the main motor bearing seat is connected to the output end of the main drive servo motor.

[0009] The lifting drive assembly also includes an auxiliary drive servo motor, a second mounting frame, and an auxiliary motor bearing seat. The second mounting frame and the auxiliary motor bearing seat are both connected to the upper side of the first horizontal mounting frame. The second mounting frame is located between the first mounting frame and the hook. The auxiliary drive servo motor is connected to the upper side of the second mounting frame, and the auxiliary motor bearing seat is connected to the output end of the auxiliary drive servo motor.

[0010] The chain assembly includes a chain, a main chain guide, a secondary chain guide, a boom chain guide, a chain storage box, and a support shaft. The chain storage box is installed on the upper side of the first horizontal mounting frame. The main chain guide is sleeved on the output shaft of the main drive servo motor, and the secondary chain guide is sleeved on the output shaft of the secondary drive servo motor. The support shaft is connected to the boom assembly, and the boom chain guide is sleeved on the support shaft. One end of the chain is located in the chain storage box, and the other end is wound around the secondary chain guide, the main chain guide, and the boom chain guide in sequence and then connected to the hook.

[0011] The chain assembly also includes an auxiliary chain, one end of which is located in the chain storage box, and the other end of which is sequentially wound around the secondary chain guide, the primary chain guide, and the boom chain guide and then connected to the hook. The auxiliary chain is connected in parallel to the chain.

[0012] The boom drive assembly includes a boom drive servo motor, a coupling, a motor drive shaft, a bearing seat assembly, a belt transmission, a third mounting frame, a screw bearing seat assembly, and a screw. The third mounting frame, the bearing seat assembly, and the screw bearing seat assembly are sequentially connected to the upper side of the vertical mounting frame, and the boom drive servo motor is connected to the lower side of the third mounting frame. The output end of the boom drive servo motor is connected to one end of the motor drive shaft through a coupling, and the other end of the motor drive shaft is connected to the bearing seat assembly. One end of the screw is connected to the screw bearing seat assembly, and the other end passes through the screw bearing seat assembly and is connected to the bearing seat assembly. The input end of the belt transmission is connected to the motor drive shaft, and the output end of the belt transmission is connected to the screw.

[0013] The bearing seat assembly includes a left bearing seat and a right bearing seat, the belt transmission member includes a driving pulley, a belt, and a driven pulley, the screw bearing seat assembly includes a left screw bearing seat and a right screw bearing seat, the left bearing seat and the right bearing seat are arranged at intervals on the upper mounting frame, the motor drive shaft passes through the left bearing seat and is connected to the right bearing seat, the driving pulley is sleeved on the motor drive shaft, one end of the screw is connected to the right screw bearing seat, and the other end passes through the left screw bearing seat and is connected to the right bearing seat, the driven pulley is sleeved on the screw, and the belt is wrapped around the outer circumference of the driving pulley and the driven pulley.

[0014] The upper and lower guide rails are connected to each other with a pair of locks, and the lock rails are connected with the lock rails respectively.

[0015] A method for using a high-altitude maintenance crane, the method comprising the following steps:

[0016] S1. Turn on the power supply, the hoisting drive assembly controls the chain assembly to release the chain, and the boom drive assembly controls the movement of the boom assembly. The boom assembly extends from the mounting frame assembly and moves synchronously with the chain. The chain moves outward and downward, and the hook descends synchronously to the designated position.

[0017] S2. Hoist the materials onto the hook, and simultaneously control the hoisting drive assembly and the boom drive assembly to move the materials to the work area. Then, unload the materials and perform aerial work maintenance. Then, use the hoisting drive assembly and the boom drive assembly to move the hook to the designated position and continue hoisting the materials until the aerial work maintenance is completed.

[0018] S3. Control the hoisting drive assembly to retract the chain of the chain assembly and move the hook upward. When the hook moves into the boom assembly, stop the hoisting drive assembly. Then control the boom drive assembly to retract the boom assembly. When the boom assembly moves into the mounting frame assembly, stop the boom drive assembly.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the high-altitude maintenance crane and its use method of the present invention, the extension and retraction of the chain assembly are controlled by the hoisting drive assembly, thereby controlling the raising and lowering of the hook. The extension and retraction of the boom are controlled by the boom drive assembly. The hook can move horizontally while descending. When the equipment is not in use, the boom can be retracted, saving the installation space area of the equipment, making the maintenance crane more compact when installed at high altitude, and improving space utilization. When the hook is retracted, it is located within the boom assembly, preventing the hook from shaking at high altitude and causing safety accidents, further improving the safety of the equipment. Therefore, the present invention has a simple structure and occupies little space.

[0021] 2. In the high-altitude maintenance crane and its use method of the present invention, by simultaneously controlling the operation of the main drive servo motor and the auxiliary drive servo motor, the main drive servo motor is responsible for controlling the drive release of the chain, and the auxiliary drive servo motor is responsible for controlling the chain to be released from the chain storage box and guide it, ensuring that the chain does not get stuck or break when it is pulled out. When the main drive servo motor fails, the auxiliary drive servo motor can be used urgently to drive the chain to be retracted and released while ensuring guidance. This function not only realizes the normal guiding function but also serves as a backup for the main drive servo motor, thereby improving the reliability of the equipment and making the equipment safer during high-altitude operations. Therefore, the present invention has high reliability and high stability.

[0022] 3. The aerial work maintenance crane and its use method of the present invention utilize a dual-chain design consisting of a main chain and an auxiliary chain, which increases the equipment's load-bearing capacity and enables the two chains to serve as backup for each other. When one chain becomes unusable, the other can be controlled for deployment and recovery, thereby improving equipment safety. The chains are stored in a chain storage box, centralizing the chains and further concentrating the center of gravity of the equipment, thereby improving its stability. Therefore, the present invention offers high reliability and stability.

[0023] 4. In the aerial work maintenance crane and its use method of the present invention, the boom drives a servo motor, which controls the rotation of a lead screw via a synchronous belt, thereby controlling the sliding of the lead screw nut on the upper guide support rail. Driven by the lead screw nut, the support arm slides synchronously on the lower guide support rail. A limit block is provided to prevent the lower guide support slider from directly sliding out of the lower guide support rail. Therefore, the present invention has high reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the aerial work maintenance crane of the present invention from a perspective when it is not working.

[0025] Figure 2 It is a structural schematic diagram of the aerial work maintenance crane in the present invention when it is not working from another perspective.

[0026] Figure 3It is a structural schematic diagram of the aerial work maintenance crane of the present invention at one viewing angle when in operation.

[0027] Figure 4 It is a structural schematic diagram of the aerial work maintenance crane in the present invention when working from another perspective.

[0028] Figure 5 It is a cross-sectional schematic diagram of the rear view direction of the aerial work maintenance crane in the present invention when working.

[0029] Figure 6 yes Figure 5 Enlarged schematic diagram of point A in the middle.

[0030] Figure 7 It is a cross-sectional schematic diagram of the rear view direction of the aerial work maintenance crane in the present invention when working.

[0031] Figure 8 yes Figure 7 Enlarged schematic diagram of point B in the middle.

[0032] In the figure: hoisting drive assembly 1, main drive servo motor 11, auxiliary drive servo motor 12, first mounting frame 13, second mounting frame 14, main motor bearing seat 15, auxiliary motor bearing seat 16, chain assembly 2, chain 21, auxiliary chain 22, main chain guide 23, auxiliary chain guide 24, boom chain guide 25, chain storage box 26, support shaft 27, boom drive assembly 3, boom drive servo motor 31, coupling 32, motor drive shaft 33, bearing seat assembly 34, left bearing seat 341, right bearing seat 342, belt transmission member 35 , driving pulley 351, belt 352, driven pulley 353, third mounting frame 36, screw bearing seat assembly 37, left screw bearing seat 371, right screw bearing seat 372, screw 38, boom assembly 4, support arm 41, horizontal boom 42, screw nut 43, lower guide support slider 44, lower guide support rail 45, upper guide support rail 46, upper guide support slider 47, limit block 48, mounting frame assembly 5, upper mounting frame 51, vertical mounting frame 52, first horizontal mounting frame 53, second horizontal mounting frame 54, hook 6. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] See also Figures 1 to 8A high-altitude work maintenance crane includes a lifting drive assembly 1, a chain assembly 2, a boom drive assembly 3, an arm assembly 4, a mounting frame assembly 5, and a hook 6. The hook 6 is connected to the output end of the chain assembly 2 and is located in the arm assembly 4. The chain assembly 2 is connected to the output end of the lifting drive assembly 1. The lifting drive assembly 1 is installed on the upper side of the mounting frame assembly 5. One end of the arm assembly 4 is connected to the chain 21 of the chain assembly 2, and the other end is connected to the output end of the arm drive assembly 3. The arm drive assembly 3 is installed on the upper side of the mounting frame assembly 5 and is located above the lifting drive assembly 1.

[0035] The mounting frame assembly 5 includes a first horizontal mounting frame 53, a second horizontal mounting frame 54, a vertical mounting frame 52, and an upper mounting frame 51. The vertical mounting frame 52 is connected to the upper side of the first horizontal mounting frame 53, and the second horizontal mounting frame 54 is connected to the upper side of the first horizontal mounting frame 53 through the vertical mounting frame 52. The upper mounting frame 51 is connected to the upper side of the vertical mounting frame 52 and is arranged along the length direction of the chain assembly 2.

[0036] The hoisting drive assembly 1 includes a main drive servo motor 11, a first mounting frame 13, and a main motor bearing seat 15. The first mounting frame 13 and the main motor bearing seat 15 are both connected to the upper side of the second horizontal mounting frame 54. The main drive servo motor 11 is connected to the upper side of the first mounting frame 13, and the main motor bearing seat 15 is connected to the output end of the main drive servo motor 11.

[0037] The hoisting drive assembly 1 also includes an auxiliary drive servo motor 12, a second mounting frame 14, and an auxiliary motor bearing seat 16. The second mounting frame 14 and the auxiliary motor bearing seat 16 are both connected to the upper side of the first horizontal mounting frame 53. The second mounting frame 14 is located between the first mounting frame 13 and the hook 6. The auxiliary drive servo motor 12 is connected to the upper side of the second mounting frame 14, and the auxiliary motor bearing seat 16 is connected to the output end of the auxiliary drive servo motor 12.

[0038] The chain assembly 2 includes a chain 21, a main chain guide 23, a secondary chain guide 24, a boom chain guide 25, a chain storage box 26, and a support shaft 27. The chain storage box 26 is installed on the upper side of the first horizontal mounting frame 53. The main chain guide 23 is sleeved on the output shaft of the main drive servo motor 11, and the secondary chain guide 24 is sleeved on the output shaft of the secondary drive servo motor 12. The support shaft 27 is connected to the boom assembly 4, and the boom chain guide 25 is sleeved on the support shaft 27. One end of the chain 21 is located in the chain storage box 26, and the other end is wrapped around the secondary chain guide 24, the main chain guide 23, and the boom chain guide 25 in sequence and then connected to the hook 6.

[0039] The chain assembly 2 also includes an auxiliary chain 22, one end of the auxiliary chain 22 is located in the chain storage box 26, and the other end is sequentially wound around the secondary chain guide 24, the primary chain guide 23, and the boom chain guide 25 and then connected to the hook 6. The auxiliary chain 22 is connected in parallel to the chain 21.

[0040] The boom drive assembly 3 includes a boom drive servo motor 31, a coupling 32, a motor drive shaft 33, a bearing seat assembly 34, a belt transmission 35, a third mounting frame 36, a screw bearing seat assembly 37, and a screw 38. The third mounting frame 36, the bearing seat assembly 34, and the screw bearing seat assembly 37 are connected to the upper side of the vertical mounting frame 52 in sequence. The boom drive servo motor 31 is connected to the lower side of the third mounting frame 36. The output end of the boom drive servo motor 31 is connected to one end of the motor drive shaft 33 through the coupling 32, and the other end of the motor drive shaft 33 is connected to the bearing seat assembly 34. One end of the screw 38 is connected to the screw bearing seat assembly 37, and the other end passes through the screw bearing seat assembly 37 and is connected to the bearing seat assembly 34. The input end of the belt transmission 35 is connected to the motor drive shaft 33, and the output end of the belt transmission 35 is connected to the screw 38.

[0041] The bearing seat assembly 34 includes a left bearing seat 341 and a right bearing seat 342, the belt transmission member 35 includes a driving pulley 351, a belt 352, and a driven pulley 353, the screw bearing seat assembly 37 includes a left screw bearing seat 371 and a right screw bearing seat 372, the left bearing seat 341 and the right bearing seat 342 are arranged at intervals on the upper mounting frame 51, the motor drive shaft 33 passes through the left bearing seat 341 and is connected to the right bearing seat 342, the driving pulley 351 is sleeved on the motor drive shaft 33, one end of the screw 38 is connected to the right screw bearing seat 372, and the other end passes through the left screw bearing seat 371 and is connected to the right bearing seat 342, the driven pulley 353 is sleeved on the screw 38, and the belt 352 is wrapped around the outer circumference of the driving pulley 351 and the driven pulley 353.

[0042] The boom assembly 4 includes two support arms 41, a horizontal boom 42, a lead screw nut 43, a lower guide support slider 44, a lower guide support rail 45, an upper guide support rail 46, an upper guide support slider 47, and a limit block 48. The lower guide support rail 45 is connected to one side of the first horizontal mounting frame 53, the lower guide support slider 44 is slidably connected to the lower guide support rail 45, and the limit block 48 is connected to the end of the lower guide support rail 45 away from the first horizontal mounting frame 53. The two support arms 41 are symmetrically arranged And they are all connected to the upper side of the lower guide support slider 44, the chain 21 of the chain assembly 2 is connected to the two support arms 41 and is located between the two support arms 41, the upper guide support rail 46 is connected to the upper side of the upper mounting frame 51, the upper guide support slider 47 is slidably connected to the upper guide support rail 46, the horizontal boom 42 is connected to the upper side of the two support arms 41 and the upper guide support slider 47, the screw nut 43 is connected to the upper side of the horizontal boom 42 and is threadedly connected to the screw 38.

[0043] A method for using a high-altitude maintenance crane, the method comprising the following steps:

[0044] S1. Turn on the power supply, the hoisting drive assembly 1 controls the chain 21 of the chain assembly 2 to release, and at the same time the boom drive assembly 3 controls the boom assembly 4 to move. The boom assembly 4 extends from the mounting frame assembly 5 and moves synchronously with the chain 21. The chain 21 moves outward and downward, and the hook 6 descends synchronously to the designated position.

[0045] S2. Hoist the materials onto the hook 6, and at the same time control the hoisting drive assembly 1 and the boom drive assembly 3 to move the materials to the work area, then unload the materials and perform aerial work maintenance, and then use the hoisting drive assembly 1 and the boom drive assembly 3 to move the hook 6 to the designated position, and continue to hoist the materials until the aerial work maintenance is completed;

[0046] S3. Control the hoisting drive assembly 1 to retract the chain 21 of the chain assembly 2, and move the hook upward. When the hook moves into the boom assembly 4, stop the hoisting drive assembly 1, and then control the boom drive assembly 3 to retract the boom assembly 4. When the boom assembly 4 moves into the mounting frame assembly 5, stop the boom drive assembly 3.

[0047] The principle of the present invention is described as follows:

[0048] During operation, the power is started, and the main drive servo motor 11, the auxiliary drive servo motor 12, and the boom drive servo motor 31 are controlled to work at the same time. The chain 21 and the auxiliary chain 22 are released from the chain storage box 26, and the hook 6 is lowered after passing through the auxiliary chain guide 24, the main chain guide 23, and the boom chain guide 25. At the same time, the boom drive servo motor 31 controls the motor drive shaft 33 to rotate, and the motor drive shaft 33 drives the driving wheel 351 to rotate. The rotation of the driving wheel 351 drives the driven wheel 353 to rotate, and the driven wheel 353 drives the lead screw 38 to rotate. The lead screw 38 nut moves outward under the drive of the lead screw 38, and the upper guide support slider 47 is on the upper The guide support rail 46 slides, causing the support arm 41, the horizontal boom 42, and the lower guide support slider 44 to slide outward, and the support arm 41 and the horizontal boom 42 are extended. When the support arm 41 and the horizontal boom 42 are extended into place, the boom drive servo motor 31 stops working, and the support arm 41 and the horizontal boom 42 remain stationary. At this time, the drive servo motor and the auxiliary drive servo motor 12 continue to work, the chain 21 and the auxiliary chain 22 continue to be released, the hook 6 drops to the designated position, and then the materials are hoisted onto the hook 6, and then the main servo motor 11 and the auxiliary drive servo motor 12 are driven to rotate in the opposite direction to move the hook 6 to the working area.

[0049] When the maintenance work is completed, the main drive servo motor 11 and the auxiliary drive servo motor 12 are controlled to raise the hook 6. When the hook 6 is retracted until it is locked with the boom chain guide 25, the boom drive servo motor 31 is controlled to retract the boom.

[0050] Example 1:

[0051] See also Figures 1 to 8 A high-altitude work maintenance crane includes a lifting drive assembly 1, a chain assembly 2, a boom drive assembly 3, an arm assembly 4, a mounting frame assembly 5, and a hook 6. The hook 6 is connected to the output end of the chain assembly 2 and is located in the arm assembly 4. The chain assembly 2 is connected to the output end of the lifting drive assembly 1. The lifting drive assembly 1 is installed on the upper side of the mounting frame assembly 5. One end of the arm assembly 4 is connected to the chain 21 of the chain assembly 2, and the other end is connected to the output end of the arm drive assembly 3. The arm drive assembly 3 is installed on the upper side of the mounting frame assembly 5 and is located above the lifting drive assembly 1.

[0052] The mounting frame assembly 5 includes a first horizontal mounting frame 53, a second horizontal mounting frame 54, a vertical mounting frame 52, and an upper mounting frame 51. The vertical mounting frame 52 is connected to the upper side of the first horizontal mounting frame 53, and the second horizontal mounting frame 54 is connected to the upper side of the first horizontal mounting frame 53 through the vertical mounting frame 52. The upper mounting frame 51 is connected to the upper side of the vertical mounting frame 52 and is arranged along the length direction of the chain assembly 2.

[0053] The hoisting drive assembly 1 includes a main drive servo motor 11, a first mounting frame 13, and a main motor bearing seat 15. The first mounting frame 13 and the main motor bearing seat 15 are both connected to the upper side of the second horizontal mounting frame 54. The main drive servo motor 11 is connected to the upper side of the first mounting frame 13, and the main motor bearing seat 15 is connected to the output end of the main drive servo motor 11.

[0054] The chain assembly 2 includes a chain 21, a main chain guide 23, a boom chain guide 25, a chain storage box 26, and a support shaft 27. The chain storage box 26 is installed on the upper side of the first horizontal mounting frame 53. The main chain guide 23 is sleeved on the output shaft of the main drive servo motor 11. The support shaft 27 is connected to the boom assembly 4. The boom chain guide 25 is sleeved on the support shaft 27. One end of the chain 21 is located in the chain storage box 26, and the other end is wrapped around the main chain guide 23 and the boom chain guide 25 in sequence and then connected to the hook 6.

[0055] The boom drive assembly 3 includes a boom drive servo motor 31, a coupling 32, a motor drive shaft 33, a bearing seat assembly 34, a belt transmission 35, a third mounting frame 36, a screw bearing seat assembly 37, and a screw 38. The third mounting frame 36, the bearing seat assembly 34, and the screw bearing seat assembly 37 are connected to the upper side of the vertical mounting frame 52 in sequence. The boom drive servo motor 31 is connected to the lower side of the third mounting frame 36. The output end of the boom drive servo motor 31 is connected to one end of the motor drive shaft 33 through the coupling 32, and the other end of the motor drive shaft 33 is connected to the bearing seat assembly 34. One end of the screw 38 is connected to the screw bearing seat assembly 37, and the other end passes through the screw bearing seat assembly 37 and is connected to the bearing seat assembly 34. The input end of the belt transmission 35 is connected to the motor drive shaft 33, and the output end of the belt transmission 35 is connected to the screw 38.

[0056] The bearing seat assembly 34 includes a left bearing seat 341 and a right bearing seat 342, the belt transmission member 35 includes a driving pulley 351, a belt 352, and a driven pulley 353, the screw bearing seat assembly 37 includes a left screw bearing seat 371 and a right screw bearing seat 372, the left bearing seat 341 and the right bearing seat 342 are arranged at intervals on the upper mounting frame 51, the motor drive shaft 33 passes through the left bearing seat 341 and is connected to the right bearing seat 342, the driving pulley 351 is sleeved on the motor drive shaft 33, one end of the screw 38 is connected to the right screw bearing seat 372, and the other end passes through the left screw bearing seat 371 and is connected to the right bearing seat 342, the driven pulley 353 is sleeved on the screw 38, and the belt 352 is wrapped around the outer circumference of the driving pulley 351 and the driven pulley 353.

[0057] The boom assembly 4 includes two support arms 41, a horizontal boom 42, a lead screw nut 43, a lower guide support slider 44, a lower guide support rail 45, an upper guide support rail 46, an upper guide support slider 47, and a limit block 48. The lower guide support rail 45 is connected to one side of the first horizontal mounting frame 53, the lower guide support slider 44 is slidably connected to the lower guide support rail 45, and the limit block 48 is connected to the end of the lower guide support rail 45 away from the first horizontal mounting frame 53. The two support arms 41 are symmetrically arranged And they are all connected to the upper side of the lower guide support slider 44, the chain 21 of the chain assembly 2 is connected to the two support arms 41 and is located between the two support arms 41, the upper guide support rail 46 is connected to the upper side of the upper mounting frame 51, the upper guide support slider 47 is slidably connected to the upper guide support rail 46, the horizontal boom 42 is connected to the upper side of the two support arms 41 and the upper guide support slider 47, the screw nut 43 is connected to the upper side of the horizontal boom 42 and is threadedly connected to the screw 38.

[0058] A method for using a high-altitude maintenance crane, the method comprising the following steps:

[0059] S1. Turn on the power supply, the hoisting drive assembly 1 controls the chain 21 of the chain assembly 2 to release, and at the same time the boom drive assembly 3 controls the boom assembly 4 to move. The boom assembly 4 extends from the mounting frame assembly 5 and moves synchronously with the chain 21. The chain 21 moves outward and downward, and the hook 6 descends synchronously to the designated position.

[0060] S2. Hoist the materials onto the hook 6, and at the same time control the hoisting drive assembly 1 and the boom drive assembly 3 to move the materials to the work area, then unload the materials and perform aerial work maintenance, and then use the hoisting drive assembly 1 and the boom drive assembly 3 to move the hook 6 to the designated position, and continue to hoist the materials until the aerial work maintenance is completed;

[0061] S3. Control the hoisting drive assembly 1 to retract the chain 21 of the chain assembly 2, and move the hook upward. When the hook moves into the boom assembly 4, stop the hoisting drive assembly 1, and then control the boom drive assembly 3 to retract the boom assembly 4. When the boom assembly 4 moves into the mounting frame assembly 5, stop the boom drive assembly 3.

[0062] Example 2:

[0063] The basic content is the same as Example 1, except that:

[0064] See also Figures 3 to 7The hoisting drive assembly 1 also includes a secondary drive servo motor 12, a second mounting frame 14, and a secondary motor bearing seat 16. The chain assembly also includes a secondary chain guide 24. The second mounting frame 14 and the secondary motor bearing seat 16 are both connected to the upper side of the first horizontal mounting frame 53. The second mounting frame 14 is located between the first mounting frame 13 and the hook 6. The secondary drive servo motor 12 is connected to the upper side of the second mounting frame 14. The secondary motor bearing seat 16 is connected to the output end of the secondary drive servo motor 12. The secondary chain guide 24 is sleeved on the output shaft of the secondary drive servo motor 12. One end of the chain 21 is located in the chain storage box 26, and the other end is wound around the secondary chain guide 24, the main chain guide 23, and the boom chain guide 25 in sequence and then connected to the hook 6.

[0065] Example 3:

[0066] The basic content is the same as Example 1, except that:

[0067] See also Figures 3 and 4 The chain assembly 2 also includes an auxiliary chain 22, one end of the auxiliary chain 22 is located in the chain storage box 26, and the other end is sequentially wound around the main chain guide 23 and the boom chain guide 25 and then connected to the hook 6. The auxiliary chain 22 is connected in parallel to the chain 21.

Claims

1. A maintenance crane for aerial work, characterized by: The invention comprises a hoisting drive assembly (1), a chain assembly (2), a boom drive assembly (3), a boom assembly (4), a mounting frame assembly (5), and a hook (6); the hook (6) is connected to the output end of the chain assembly (2) and is located in the boom assembly (4); the chain assembly (2) is connected to the output end of the hoisting drive assembly (1); the hoisting drive assembly (1) is mounted on the upper side of the mounting frame assembly (5); one end of the boom assembly (4) is connected to the chain (21) of the chain assembly (2) and the other end is connected to the output end of the boom drive assembly (3); the boom drive assembly (3) is mounted on the upper side of the mounting frame assembly (5) and is located above the hoisting drive assembly (1); The mounting frame assembly (5) comprises a first horizontal mounting frame (53), a second horizontal mounting frame (54), a vertical mounting frame (52), and an upper mounting frame (51); the vertical mounting frame (52) is connected to the upper side of the first horizontal mounting frame (53); the second horizontal mounting frame (54) is connected to the upper side of the first horizontal mounting frame (53) through the vertical mounting frame (52); and the upper mounting frame (51) is connected to the upper side of the vertical mounting frame (52) and is arranged along the length direction of the chain assembly (2); The chain assembly (2) includes a chain (21), a main chain guide (23), a secondary chain guide (24), a boom chain guide (25), a chain storage box (26), and a support shaft (27). The chain storage box (26) is installed on the upper side of the first horizontal mounting frame (53). The main chain guide (23) and the secondary chain guide (24) are respectively connected to the output end of the hoisting drive assembly (1). The support shaft (27) is connected to the boom assembly (4). The boom chain guide (25) is sleeved on the support shaft (27). One end of the chain (21) is located in the chain storage box (26), and the other end is wound around the secondary chain guide (24), the main chain guide (23), and the boom chain guide (25) in sequence and then connected to the hook (6). The boom drive assembly (3) comprises a boom drive servo motor (31), a coupling (32), a motor drive shaft (33), a bearing seat assembly (34), a belt transmission member (35), a third mounting frame (36), a screw bearing seat assembly (37), and a screw (38). The third mounting frame (36), the bearing seat assembly (34), and the screw bearing seat assembly (37) are sequentially connected to the upper side of the vertical mounting frame (52). The boom drive servo motor (31) is connected to the lower side of the third mounting frame (36). The output end of the servo motor (31) is connected to one end of the motor drive shaft (33) through a coupling (32), the other end of the motor drive shaft (33) is connected to the bearing seat assembly (34), one end of the lead screw (38) is connected to the lead screw bearing seat assembly (37), and the other end passes through the lead screw bearing seat assembly (37) and is connected to the bearing seat assembly (34), the input end of the belt transmission member (35) is connected to the motor drive shaft (33), and the output end of the belt transmission member (35) is connected to the lead screw (38).

2. The aerial work maintenance crane according to claim 1, characterized in that: The hoisting drive assembly (1) includes a main drive servo motor (11), a first mounting frame (13), and a main motor bearing seat (15); the first mounting frame (13) and the main motor bearing seat (15) are both connected to the upper side of the second horizontal mounting frame (54); the main drive servo motor (11) is connected to the upper side of the first mounting frame (13); and the main motor bearing seat (15) is connected to the output end of the main drive servo motor (11).

3. The aerial work maintenance crane according to claim 2, characterized in that: The hoisting drive assembly (1) also includes an auxiliary drive servo motor (12), a second mounting frame (14), and an auxiliary motor bearing seat (16). The second mounting frame (14) and the auxiliary motor bearing seat (16) are both connected to the upper side of the first horizontal mounting frame (53). The second mounting frame (14) is located between the first mounting frame (13) and the hook (6). The auxiliary drive servo motor (12) is connected to the upper side of the second mounting frame (14), and the auxiliary motor bearing seat (16) is connected to the output end of the auxiliary drive servo motor (12).

4. The aerial work maintenance crane according to claim 3, characterized in that: The chain assembly (2) further includes an auxiliary chain (22), one end of which is located in the chain storage box (26), and the other end of which is sequentially wound around the secondary chain guide (24), the primary chain guide (23), and the boom chain guide (25) and then connected to the hook (6). The auxiliary chain (22) is connected in parallel to the chain (21).

5. The aerial work maintenance crane according to claim 1, characterized in that: The bearing seat assembly (34) includes a left bearing seat (341) and a right bearing seat (342); the belt transmission member (35) includes a driving wheel (351), a belt (352), and a driven wheel (353); the screw bearing seat assembly (37) includes a left screw bearing seat (371) and a right screw bearing seat (372); the left bearing seat (341) and the right bearing seat (342) are spaced apart on the upper mounting frame (51); the motor drive shaft (33) passes through the left bearing seat The seat (341) is connected to the right bearing seat (342) at the rear, the driving wheel (351) is sleeved on the motor drive shaft (33), one end of the screw (38) is connected to the right screw bearing seat (372), and the other end passes through the left screw bearing seat (371) and is connected to the right bearing seat (342), the driven wheel (353) is sleeved on the screw (38), and the belt (352) is wound around the outer periphery of the driving wheel (351) and the driven wheel (353).

6. The aerial work maintenance crane according to claim 1, characterized in that: The boom assembly (4) comprises two support arms (41), a horizontal boom (42), a lead screw nut (43), a lower guide support slider (44), a lower guide support rail (45), an upper guide support rail (46), an upper guide support slider (47), and a limit block (48). The lower guide support rail (45) is connected to one side of the first horizontal mounting frame (53). The lower guide support slider (44) is slidably connected to the lower guide support rail (45). The limit block (48) is connected to the end of the lower guide support rail (45) away from the first horizontal mounting frame (53). The two support arms (41) are symmetrical. The upper guide support slider (47) is arranged and connected to the upper side of the lower guide support slider (44), the chain (21) of the chain assembly (2) is connected to the two support arms (41) and is located between the two support arms (41), the upper guide support rail (46) is connected to the upper side of the upper mounting frame (51), the upper guide support slider (47) is slidably connected to the upper guide support rail (46), the horizontal boom (42) is connected to the two support arms (41) and the upper side of the upper guide support slider (47), and the lead screw nut (43) is connected to the upper side of the horizontal boom (42) and is threadedly connected to the lead screw (38).

7. A method for using the aerial work maintenance crane according to claim 1, characterized in that: The method of use comprises the following steps: S1. Start the power supply, the hoisting drive assembly (1) controls the chain (21) of the chain assembly (2) to release, and at the same time the boom drive assembly (3) controls the boom assembly (4) to move, the boom assembly (4) extends from the mounting frame assembly (5) and moves synchronously with the chain (21), the chain (21) moves outward and downward, the hook (6) descends synchronously, and the hook (6) descends to the designated position; S2, hoisting the materials onto the hook (6), and simultaneously controlling the hoisting drive assembly (1) and the boom drive assembly (3) to move the materials to the working area, then unloading the materials, and performing high-altitude operation maintenance, and then moving the hook (6) to the designated position by the hoisting drive assembly (1) and the boom drive assembly (3), and continuing to hoist the materials until the high-altitude operation maintenance is completed; S3, control the hoisting drive assembly (1) to retract the chain (21) of the chain assembly (2), and move the hook (6) upward. When the hook (6) moves into the boom assembly (4), stop the hoisting drive assembly (1), then control the boom drive assembly (3) to retract the boom assembly (4), and when the boom assembly (4) moves into the mounting frame assembly (5), stop the boom drive assembly (3).

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