Maintenance hanging bracket and using method

Abstract

The invention discloses an overhaul hanging bracket and a using method, and relates to the technical field of overhaul industries, the overhaul hanging bracket comprises a first movable base, a second movable base, a door-shaped frame, a hoisting device and a limiting mechanism, and the first movable base can move and keep the position after movement; the second movable base can move and keep the moved position; the two bottom ends of the n-shaped frame are connected with the top of the first movable base and the top of the second movable base correspondingly. The hoisting device comprises a hook, a rope and a driving part, the driving part is arranged at the top of the door-shaped frame, the output end of the driving part is connected with one end of the rope, the end, away from the driving part, of the rope is fixedly connected with the hook, and the driving part can drive the hook to ascend or descend; the middle of the limiting mechanism is fixedly connected with the top of the hook, the two ends of the limiting mechanism are slidably connected with the door-shaped frame in the vertical direction, the structure is simple, use is convenient, and the safety during use is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance industry, and in particular to a maintenance hanger and a use method thereof. Background Art

[0002] Maintenance hangers are usually tools used to maintain and overhaul equipment, machinery or structures. In the overhaul industry, especially for centrifugal compressors, air compressors, steam turbines and piston compressors, maintenance hangers are crucial. Existing maintenance hangers are prone to cause the lifted equipment to sway left and right during movement, which can easily bump into maintenance personnel. Therefore, a maintenance hanger is needed for operation.

[0003] A maintenance hanger disclosed in the publication number CN219429555U comprises a base, a placement plate is fixedly connected to the surface of the base, a groove is provided in the middle of the surface of the placement plate, a hydraulic rod is fixedly connected inside the groove, a fixed plate is fixedly connected to one side of the base, a support assembly is fixedly connected to the surface of the fixed plate, a cross bar is fixedly connected to the other side of the hydraulic rod, a sliding groove is provided on the surface of the cross bar, a sliding block is placed inside the sliding groove, and a sliding plate is fixedly connected to the upper surface of the sliding block. The maintenance hanger is provided with a lifting assembly, and when personnel use it, the servo motor is connected to the power supply, the transmission rod starts to rotate, and then the transmission rod drives the pulley to rotate, and then the rope is wound with the rotation of the pulley, and the hook moves upward, and vice versa, the hook moves downward. This facilitates personnel to lift the object to be repaired.

[0004] However, the maintenance hanger has the following disadvantages: when in use, it is not easy to keep the suspended equipment stable during movement, and the suspended equipment is likely to swing left and right, which may bump into nearby maintenance personnel. Summary of the invention

[0005] The purpose of the present invention is to provide a maintenance hanger and a method of use to solve the problems existing in the above-mentioned prior art, with a simple structure, easy use, and effectively improving safety during use.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a maintenance hanger, comprising: a first movable base, a second movable base, a portal frame, a lifting device and a limiting mechanism, wherein the first movable base can move and maintain a position after moving; the second movable base can move and maintain a position after moving; the two bottom ends of the portal frame are respectively connected to the tops of the first movable base and the second movable base; the lifting device comprises a hook, a rope and a driving member, the driving member is arranged at the top of the portal frame, the output end of the driving member is connected to one end of the rope, the end of the rope away from the driving member is fixedly connected to the hook, and the driving member can drive the hook to rise or fall; the middle part of the limiting mechanism is fixedly connected to the top of the hook, and the two ends of the limiting mechanism are respectively connected to the portal frame in a sliding manner in the vertical direction.

[0008] Preferably, the portal frame includes a first support rod, a second support rod and a top mounting rod, the two ends of the top mounting rod are respectively fixedly connected to the top of the first support rod and the second support rod, the bottom of the first support rod is connected to the first movable base, and the bottom of the second support rod is used to connect to the top of the second movable base.

[0009] Preferably, the limiting mechanism includes a fixed cylinder, a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are respectively fixedly connected to both sides of the fixed cylinder, the fixed cylinder is used to allow the rope at the top of the hook to pass through and be fixedly connected to the rope, the first support rod is provided with a first slide groove, the second support rod is provided with a second slide groove, the end of the first limiting rod away from the fixed cylinder is slidably connected to the first slide groove, and the end of the second limiting rod away from the fixed cylinder is slidably connected to the second slide groove.

[0010] Preferably, the driving member includes a servo motor, a transmission rod and a cable reel, the servo motor is fixedly connected to the top of the top mounting rod, the output shaft of the servo motor is fixedly connected to the transmission rod, the end of the transmission rod away from the servo motor is used to be fixedly connected to the cable reel, the cable reel is used to be wound and linked with the end of the rope away from the hook, the servo motor can drive the cable reel to rotate to retract or release the rope and thereby drive the hook to rise or fall.

[0011] Preferably, it also includes a first fixed rod, a second fixed rod, a first lifting member and a second lifting member, the first fixed rod is vertically fixedly connected to the top of the first movable base, the second fixed rod is vertically fixedly connected to the top of the second movable base, the first support rod is sleeved on the first fixed rod, and can slide along the first fixed rod and maintain the position after sliding under the drive of the first lifting member, the second support rod is sleeved on the second fixed rod, and can slide along the second fixed rod and maintain the position after sliding under the drive of the second lifting member.

[0012] Preferably, the first lifting member includes a first driving gear, the first support rod is fixedly arranged on a first tooth plate, the first driving gear is rotatably connected to the first fixing rod, the first driving gear is used to mesh with the first tooth plate, and the first lifting member can be driven to rise or fall by rotating the first driving gear;

[0013] The second lifting member includes a second driving gear, which is fixedly arranged in the second tooth plate inside the second support rod. The second driving gear is rotatably connected to the second fixed rod. The second driving gear is used to mesh with the second tooth plate. Rotating the second driving gear can drive the second lifting member to rise or fall.

[0014] Preferably, the first driving member further comprises a first rotating handle, the first rotating handle passes through the first fixing rod and is rotatably connected to the first fixing rod, and the first rotating handle passes through the middle of the first driving gear and is fixedly connected to the first driving gear to drive the first driving gear to rotate, and vertical first sliding holes are provided on both sides of the first supporting rod, and the portion of the first rotating handle extending into the first fixing rod slides in the first sliding hole;

[0015] The second driving member also includes a second rotating handle, which passes through the second fixed rod and is rotatably connected to the second fixed rod, and the second rotating handle passes through the middle part of the second driving gear and is fixedly connected to the second driving gear to drive the second driving gear to rotate. Vertical second sliding holes are provided on both sides of the second support rod, and the part of the second rotating handle extending into the second fixed rod slides in the second sliding hole.

[0016] Preferably, the first mobile base comprises a first base body, a plurality of first universal wheels and a plurality of first supporting mechanisms, each of the universal wheels is arranged at the bottom of the first base body, and each of the first supporting mechanisms is respectively arranged at both sides of the first base body to support the first base body after the first base body reaches the working position;

[0017] The second mobile base includes a second base body, a plurality of second universal wheels and a plurality of second supporting mechanisms, each of the universal wheels is arranged at the bottom of the second base body, and each of the second supporting mechanisms is respectively arranged on both sides of the second base body to support the second base body after the second base body reaches the working position.

[0018] Preferably, the first supporting device comprises a first fixing block, a first threaded column, a first bearing and a first suction cup, the first fixing block is fixedly connected to the first base body, the first fixing block is provided with a first threaded hole, the first threaded column is threadedly connected to the first threaded hole, the bottom end of the first threaded column is rotatably connected to the first suction cup through the first bearing, and the first suction cup is used to be placed on the ground;

[0019] The second supporting device includes a second fixed block, a second threaded column, a second bearing and a second suction cup. The second fixed block is fixedly connected to the second base body. A second threaded hole is provided on the second fixed block. The second threaded column is threadedly connected to the second threaded hole. The bottom end of the second threaded column is rotatably connected to the second suction cup through the second bearing. The second suction cup is used to be placed on the ground.

[0020] The present invention also provides a method for using the maintenance hanger as described in any one of the above items, characterized in that it comprises the following steps:

[0021] Move the first mobile base and the second mobile base to the working position, hang the suspended equipment on the hook, and drive the rope to shrink by rotating the driving member, thereby driving the limiting mechanism to slide in the vertical direction of the portal frame, and then driving the hook to lift the suspended equipment.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] The present invention provides a maintenance hanger and a method for using the maintenance hanger. The first mobile base and the second mobile base are moved to the working position, and the suspended equipment is hung on the hook. The driving member is rotated to drive the rope to contract, thereby driving the limit mechanism to slide in the vertical direction of the portal frame, and then driving the hook to drive the suspended equipment to be lifted. In this process, the limit mechanism slides in the vertical direction of the portal frame to prevent the rope from shaking significantly, so that the lifting and height adjustment of the equipment can be completed quickly and accurately. At the same time, the limit mechanism effectively prevents the suspended equipment from shaking during the movement, thereby improving safety and practicality, and adapting to different maintenance scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the overall structure of the maintenance hanger provided by the present invention;

[0026] Figure 2 A schematic diagram of the structure of the hoisting device in the maintenance hanger provided by the present invention;

[0027] Figure 3 A schematic diagram of the structure of a first lifting member in the maintenance hanger provided by the present invention;

[0028] Figure 4 This is a schematic structural diagram of the first supporting mechanism in the maintenance hanger provided by the present invention.

[0029] In the figure: 1. first base body; 2. first supporting mechanism; 201. first fixing block; 202. first threaded column; 203. first bearing; 204. first suction cup; 3. first fixing rod; 4. first reinforcing mechanism; 401. first supporting plate; 402. first fixing bolt; 5. first lifting member; 501. first turning handle; 502. first driving gear; 503. first tooth plate; 6. portal frame; 7. lifting device; 701. servo motor; 702. transmission rod; 703. cable drum; 704. rope; 705. hook; 8. limiting mechanism; 801. fixing cylinder; 802. first limiting rod; 9. pulley; 10. universal wheel. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a maintenance hanger and a method of use to solve the problems existing in the above-mentioned prior art, with a simple structure, easy use, and effectively improving safety during use.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] This embodiment provides a maintenance hanger, such as Figures 1 to 4 As shown, it includes: a first mobile base, a second mobile base, a portal frame 6, a lifting device 7 and a limiting mechanism 8, the first mobile base can move and maintain the position after the movement; the second mobile base can move and maintain the position after the movement; the two bottom ends of the portal frame 6 are respectively connected to the top of the first mobile base and the second mobile base; the lifting device 7 includes a hook 705, a rope 704 and a driving member, the driving member is arranged on the top of the portal frame 6, the output end of the driving member is connected to one end of the rope 704, the end of the rope 704 away from the driving member is fixedly connected to the hook 705, and the driving member can drive the hook 705 to rise or fall; the middle part of the limiting mechanism 8 is fixedly connected to the top of the hook 705, and the two ends of the limiting mechanism 8 are respectively connected to the portal frame 6 in a sliding manner in the vertical direction, the first mobile base and the second mobile base are moved to the working position, the hoisted equipment is hung on the hook 705, the rope 704 is driven to shrink by the rotation of the driving member, thereby driving the limiting mechanism 8 to slide in the vertical direction of the portal frame 6, and then driving the hook 705 to drive the hoisted equipment to be lifted. During this process, the limiting mechanism 8 slides in the vertical direction of the portal frame 6 to prevent the rope 704 from shaking significantly, thereby enabling the equipment to be lifted and the height adjusted quickly and accurately. At the same time, the limiting mechanism 8 effectively prevents the lifted equipment from shaking during movement, thereby improving safety and practicality and adapting to different maintenance scenarios.

[0035] In a preferred scheme of the present embodiment, the portal frame 6 includes a first support rod, a second support rod and a top mounting rod, the two ends of the top mounting rod are respectively fixedly connected to the tops of the first support rod and the second support rod, the bottom of the first support rod is connected to the first movable base, and the bottom of the second support rod is used to connect to the top of the second movable base. The structural design of the portal frame 6 provides a stable support frame for the maintenance hanger, ensuring the structural stability of the entire device.

[0036] In a preferred scheme of the present embodiment, the limiting mechanism 8 includes a fixed cylinder 801, a first limiting rod 802 and a second limiting rod, the first limiting rod 802 and the second limiting rod are respectively fixedly connected to both sides of the fixed cylinder 801, the fixed cylinder 801 is used to allow the rope 704 on the top of the hook 705 to pass through and be fixedly connected to the rope 704, a first slide groove is provided on the first support rod, and a second slide groove is provided on the second support rod, the end of the first limiting rod 802 away from the fixed cylinder 801 is slidably connected in the first slide groove, and the end of the second limiting rod away from the fixed cylinder 801 is slidably connected in the second slide groove. This design of the limiting mechanism 8 can effectively limit the shaking of the rope 704, so that the lifted equipment remains stable during the movement, avoids bumping into maintenance personnel, and improves safety.

[0037] In a preferred scheme of the present embodiment, the driving member includes a servo motor 701, a transmission rod 702 and a cable drum 703. The servo motor 701 is fixedly connected to the top of the top mounting rod. The output shaft of the servo motor 701 is fixedly connected to the transmission rod 702. The end of the transmission rod 702 away from the servo motor 701 is used to be fixedly connected to the cable drum 703. The cable drum 703 is used to be wound and linked with the end of the rope 704 away from the hook 705. The servo motor 701 can drive the cable drum 703 to rotate to retract or release the rope 704 and then drive the hook 705 to rise or fall. The design of the driving member realizes automatic lifting and lowering of the equipment, which is convenient and quick to operate and improves work efficiency.

[0038] In a preferred solution of this embodiment, the maintenance hanger also includes a pulley 9, which is arranged on the top of the portal frame 6. The rope 704 passes around the pulley 9 and is connected to the hook 705. The pulley 9 supports the rope 704, making the rope 704 more stable when lifting the equipment and reducing the wear of the rope 704.

[0039] In a preferred scheme of the present embodiment, the maintenance hanger also includes a first fixed rod 3, a second fixed rod, a first lifting member 5 and a second lifting member. The first fixed rod 3 is vertically fixedly connected to the top of the first movable base, and the second fixed rod is vertically fixedly connected to the top of the second movable base. The first support rod is sleeved on the first fixed rod 3, and can slide along the first fixed rod 3 and maintain the position after sliding under the drive of the first lifting member 5. The second support rod is sleeved on the second fixed rod, and can slide along the second fixed rod and maintain the position after sliding under the drive of the second lifting member. Through the arrangement of the first lifting member 5 and the second lifting member, the height of the gantry 6 is adjustable, which further improves the applicability of the maintenance hanger.

[0040] In a preferred scheme of the present embodiment, it also includes multiple first reinforcement mechanisms 4 and multiple second reinforcement mechanisms, the first reinforcement mechanisms 4 are respectively arranged on both sides of the first fixed rod 3, and the second reinforcement mechanisms are respectively arranged on both sides of the second fixed rod, the first reinforcement mechanism 4 includes a first support plate 401 and multiple first fixing bolts 402, the first support plate 401 is fixedly connected to the first fixed rod 3 and the first movable base through the first fixing bolts 402, the second reinforcement mechanism includes a second support plate and multiple second fixing bolts, the second support plate is fixedly connected to the second fixed rod and the second movable base through the second fixing bolts, the first reinforcement mechanism 4 and the second reinforcement mechanism enhance the connection stability between the first fixed rod 3 and the second fixed rod and the movable base, and improve the structural strength of the entire device.

[0041] In a preferred scheme of the present embodiment, the first lifting member 5 includes a first driving gear 502, which is fixedly arranged on the first tooth plate 503 in the first support rod, and the first driving gear 502 is rotatably connected to the first fixed rod 3, and the first driving gear 502 is used to mesh with the first tooth plate 503, and rotating the first driving gear 502 can drive the first lifting member to rise or fall; the second lifting member includes a second driving gear, which is fixedly arranged on the second tooth plate in the second support rod, and the second driving gear is rotatably connected to the second fixed rod, and the second driving gear is used to mesh with the second tooth plate, and rotating the second driving gear can drive the second lifting member to rise or fall, and the lifting is realized by the meshing connection between the gear and the tooth plate. The structure is simple and reliable, the operation is convenient, and the lifting height can be accurately controlled.

[0042] In a preferred scheme of the present embodiment, the first driving member also includes a first rotating handle 501, which passes through the first fixed rod 3 and is rotatably connected to the first fixed rod 3, and the first rotating handle 501 passes through the middle part of the first driving gear 502 and is fixedly connected to the first driving gear 502 to drive the first driving gear 502 to rotate, and vertical first sliding holes are provided on both sides of the first support rod, and the part of the first rotating handle 501 extending into the first fixed rod 3 slides in the first sliding hole; the second driving member also includes a second rotating handle, which passes through the second fixed rod and is rotatably connected to the second fixed rod, and the second rotating handle passes through the middle part of the second driving gear and is fixedly connected to the second driving gear to drive the second driving gear to rotate, and vertical second sliding holes are provided on both sides of the second support rod, and the part of the second rotating handle extending into the second fixed rod slides in the second sliding hole. The setting of the rotating handle facilitates the operator to manually control the lifting and lowering, thereby improving the flexibility and convenience of operation.

[0043] In a preferred scheme of the present embodiment, the first mobile base includes a first base body 1, a plurality of first universal wheels 10 and a plurality of first supporting mechanisms 2, each universal wheel 10 is arranged at the bottom of the first base body 1, and each first supporting mechanism 2 is respectively arranged on both sides of the first base body 1 to support the first base body 1 after the first base body 1 reaches the working position; the second mobile base includes a second base body, a plurality of second universal wheels 10 and a plurality of second supporting mechanisms, each universal wheel 10 is arranged at the bottom of the second base body, and each second supporting mechanism is respectively arranged on both sides of the second base body to support the second base body after the second base body reaches the working position. The design of the mobile base makes it easy to move the maintenance hanger to different working positions, thereby improving work efficiency.

[0044] In a preferred scheme of the present embodiment, the first supporting device includes a first fixed block 201, a first threaded column 202, a first bearing 203 and a first suction cup 204, the first fixed block 201 is fixedly connected to the first base body 1, a first threaded hole is provided on the first fixed block 201, the first threaded column 202 is threadedly connected to the first threaded hole, the bottom end of the first threaded column 202 is rotatably connected to the first suction cup 204 through the first bearing 203, and the first suction cup 204 is used to be placed on the ground; the second supporting device includes a second fixed block, a second threaded column, a second bearing and a second suction cup, the second fixed block is fixedly connected to the second base body, a second threaded hole is provided on the second fixed block, the second threaded column is threadedly connected to the second threaded hole, the bottom end of the second threaded column is rotatably connected to the second suction cup through the second bearing, and the second suction cup is used to be placed on the ground, the supporting device can provide stable support after the mobile base reaches the working position, and through the design of the threaded column and the suction cup, the support height can be adjusted and the adsorption force can be enhanced, thereby improving the stability of the device.

[0045] Embodiment 2

[0046] This embodiment also provides a method for using the maintenance hanger as in the first embodiment, comprising the following steps:

[0047] 1. Preparation

[0048] Check and inspect whether all parts of the hanger are intact and confirm that key parts such as servo motor 701 and drive gear can work normally.

[0049] Check whether the rope 704 is worn or broken to ensure that it can safely carry the suspended equipment.

[0050] 2. Mobile Phase

[0051] The maintenance hanger is moved to a position where equipment maintenance is required by utilizing the first universal wheel 10 and the second universal wheel 10 at the bottom of the first movable base and the second movable base.

[0052] During the movement, be careful to avoid obstacles and ensure smooth movement.

[0053] 3. Fixed Phase

[0054] When the maintenance hanger reaches the working position, the first supporting mechanism 2 and the second supporting mechanism on both sides of the first movable base and the second movable base are adjusted respectively.

[0055] For the first supporting mechanism 2, the first threaded column 202 is rotated to make the first suction cup 204 gradually approach the ground until the first suction cup 204 is firmly adsorbed on the ground.

[0056] For the second supporting mechanism, the second threaded column is rotated to gradually bring the second suction cup closer to the ground until the second suction cup is firmly adsorbed on the ground.

[0057] 4. Connecting the suspended equipment

[0058] The hook 705 is connected to the equipment to be lifted.

[0059] 5. Equipment lifting stage

[0060] Turn the first rotating handle 501 and the second rotating handle. The first rotating handle 501 drives the first driving gear 502 to rotate, and since the first driving gear 502 is meshed and connected with the first tooth plate 503 in the first support rod, the first support rod is driven to slide along the first fixed rod 3; the second rotating handle drives the second driving gear to rotate, and since the second driving gear is meshed and connected with the second tooth plate in the second support rod, the second support rod is driven to slide along the second fixed rod. In this way, the height adjustment of the door frame 6 can be achieved;

[0061] The servo motor 701 is started, and the output shaft of the servo motor 701 drives the transmission rod 702 to rotate, and the transmission rod 702 further drives the cable drum 703 to rotate.

[0062] The cable drum 703 rotates to shrink the rope 704, thereby lifting the device. In this process, the first limiting rod 802 of the limiting mechanism 8 slides in the first sliding groove of the first support rod, and the second limiting rod slides in the second sliding groove of the second support rod to prevent the rope 704 from shaking significantly.

[0063] 6. Height Adjustment Stage

[0064] If the height of the suspended equipment needs to be adjusted, the rotation of the cable drum 703 is precisely adjusted through the control of the servo motor 701, so as to realize the retraction and extension of the rope 704, and then adjust the height of the equipment.

[0065] 7. Maintenance stage

[0066] After the hoisted equipment reaches a suitable height, equipment maintenance work can be carried out.

[0067] 8. Ending Phase

[0068] After the maintenance work is completed, the above steps are reversed to lower the suspended equipment and remove the connection between the hook 705 and the suspended equipment.

[0069] The servo motor 701 is turned off.

[0070] Release the suction cups of the first supporting mechanism 2 and the second supporting mechanism, and move the inspection hanger to the storage position.

[0071] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A maintenance hanger, characterized in that: include: a first mobile base, the first mobile base being capable of moving and maintaining a position after the movement; a second mobile base, the second mobile base being capable of moving and maintaining a position after the movement; A door-shaped frame, wherein two bottom ends of the door-shaped frame are respectively connected to the tops of the first movable base and the second movable base; A hoisting device, the hoisting device comprising a hook, a rope and a driving member, the driving member being arranged on the top of the portal frame, the output end of the driving member being connected to one end of the rope, the end of the rope away from the driving member being fixedly connected to the hook, and the driving member being able to drive the hook to rise or fall; and A limiting mechanism, wherein the middle portion of the limiting mechanism is fixedly connected to the top of the hook, and both ends of the limiting mechanism are respectively slidably connected to the door frame in the vertical direction.

2. The maintenance hanger according to claim 1, characterized in that: The portal frame includes a first support rod, a second support rod and a top mounting rod, the two ends of the top mounting rod are respectively fixedly connected to the top of the first support rod and the second support rod, the bottom of the first support rod is connected to the first movable base, and the bottom of the second support rod is used to connect to the top of the second movable base.

3. The maintenance hanger according to claim 2, characterized in that: The limiting mechanism includes a fixed cylinder, a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are respectively fixedly connected to both sides of the fixed cylinder, the fixed cylinder is used to allow the rope at the top of the hook to pass through and be fixedly connected to the rope, a first sliding groove is provided on the first support rod, and a second sliding groove is provided on the second support rod, the end of the first limiting rod away from the fixed cylinder is slidably connected to the first sliding groove, and the end of the second limiting rod away from the fixed cylinder is slidably connected to the second sliding groove.

4. The maintenance hanger according to claim 3, characterized in that: The driving member includes a servo motor, a transmission rod and a cable reel. The servo motor is fixedly connected to the top of the top mounting rod. The output shaft of the servo motor is fixedly connected to the transmission rod. The end of the transmission rod away from the servo motor is used to be fixedly connected to the cable reel. The cable reel is used to be wound and linked with the end of the rope away from the hook. The servo motor can drive the cable reel to rotate to retract or release the rope and thereby drive the hook to rise or fall.

5. The maintenance hanger according to claim 4, characterized in that: It also includes a first fixed rod, a second fixed rod, a first lifting member and a second lifting member, the first fixed rod is vertically fixedly connected to the top of the first movable base, the second fixed rod is vertically fixedly connected to the top of the second movable base, the first support rod is sleeved on the first fixed rod, and can slide along the first fixed rod and maintain the position after sliding under the drive of the first lifting member, the second support rod is sleeved on the second fixed rod, and can slide along the second fixed rod and maintain the position after sliding under the drive of the second lifting member.

6. The maintenance hanger according to claim 5, characterized in that: The first lifting member includes a first driving gear, which is fixedly arranged on a first tooth plate in the first support rod, the first driving gear is rotatably connected to the first fixing rod, and the first driving gear is used to mesh with the first tooth plate, and rotating the first driving gear can drive the first lifting member to rise or fall; The second lifting member includes a second driving gear, which is fixedly arranged in the second tooth plate inside the second support rod. The second driving gear is rotatably connected to the second fixed rod. The second driving gear is used to mesh with the second tooth plate. Rotating the second driving gear can drive the second lifting member to rise or fall.

7. The maintenance hanger according to claim 1, characterized in that: The first driving member further includes a first rotating handle, the first rotating handle passes through the first fixing rod and is rotatably connected to the first fixing rod, and the first rotating handle passes through the middle of the first driving gear and is fixedly connected to the first driving gear to drive the first driving gear to rotate, and vertical first sliding holes are provided on both sides of the first supporting rod, and the portion of the first rotating handle extending into the first fixing rod slides in the first sliding hole; The second driving member also includes a second rotating handle, which passes through the second fixed rod and is rotatably connected to the second fixed rod, and the second rotating handle passes through the middle part of the second driving gear and is fixedly connected to the second driving gear to drive the second driving gear to rotate. Vertical second sliding holes are provided on both sides of the second support rod, and the part of the second rotating handle extending into the second fixed rod slides in the second sliding hole.

8. The maintenance hanger according to claim 1, characterized in that: The first mobile base includes a first base body, a plurality of first universal wheels and a plurality of first supporting mechanisms, each of the universal wheels is arranged at the bottom of the first base body, and each of the first supporting mechanisms is respectively arranged at both sides of the first base body to support the first base body after the first base body reaches the working position; The second mobile base includes a second base body, a plurality of second universal wheels and a plurality of second supporting mechanisms, each of the universal wheels is arranged at the bottom of the second base body, and each of the second supporting mechanisms is respectively arranged on both sides of the second base body to support the second base body after the second base body reaches the working position.

9. The maintenance hanger according to claim 8, characterized in that: The first supporting device comprises a first fixing block, a first threaded column, a first bearing and a first suction cup, wherein the first fixing block is fixedly connected to the first base body, a first threaded hole is provided on the first fixing block, the first threaded column is threadedly connected to the first threaded hole, the bottom end of the first threaded column is rotatably connected to the first suction cup through the first bearing, and the first suction cup is used to be placed on the ground; The second supporting device includes a second fixed block, a second threaded column, a second bearing and a second suction cup. The second fixed block is fixedly connected to the second base body. A second threaded hole is provided on the second fixed block. The second threaded column is threadedly connected to the second threaded hole. The bottom end of the second threaded column is rotatably connected to the second suction cup through the second bearing. The second suction cup is used to be placed on the ground.

10. A method for using the maintenance hanger according to any one of claims 1 to 9, characterized in that: The following steps are involved: Move the first mobile base and the second mobile base to the working position, hang the suspended equipment on the hook, and drive the rope to shrink by rotating the driving member, thereby driving the limiting mechanism to slide in the vertical direction of the portal frame, and then driving the hook to lift the suspended equipment.

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