Hanger with auxiliary landing function for hanging large-coil-weight I-shaped wheel

By designing a lifting device that coordinates the support box and components, the problem of damage during the suspension and placement of large-disc heavy I-beam wheels was solved, achieving buffered grounding and stable clamping, and it is suitable for the suspension and placement of I-beam wheels of different specifications.

CN223704948UActive Publication Date: 2025-12-23JIANGSU YIDA PIPE FITTINGS CO LTD
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Patent Information

Application Number
CN202520026147.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-07
Publication Date
2025-12-23
Estimated Expiration
2035-01-07

AI Technical Summary

Technical Problem

Large-diameter heavy-duty rollers are prone to damage during suspension and placement due to direct contact with the ground, and existing lifting equipment lacks effective cushioning measures.

Method used

A lifting device with auxiliary ground contact is designed for large-disc heavy I-beam wheel suspension, including a support box, a lifting support assembly, a clamping assembly and a positioning assembly. The lifting support assembly is moved by the drive assembly, and the clamping assembly is used to clamp and fix the I-beam wheel, so that it slowly contacts the ground during placement to avoid impact.

Benefits of technology

It effectively avoids damage to the large-diameter heavy I-beams during placement, improves the applicability and stability of the lifting device to I-beams of different specifications, and ensures the stability of the placement process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a lifting appliance with an auxiliary landing function for suspending a large-coil heavy spool, and relates to the technical field of spool lifting appliances. The device comprises a supporting box, a plurality of jacking supporting assemblies are arranged at the bottom of the supporting box, a driving assembly is arranged in the supporting box, clamping assemblies are arranged at the bottoms of the jacking supporting assemblies, and a positioning assembly is arranged at the bottom of the supporting box. According to the utility model, the lifting appliance is moved downwards, the bottom of the clamping assembly is in contact with the ground, and then the driving assembly drives the plurality of jacking support assemblies and the clamping assembly to move towards the outer side of the large-coil-weight spool, so that when the clamping assembly completely moves out of the bottom of the large-coil-weight spool, the large-coil-weight spool can be jacked; and the jacking supporting assembly continues to move towards the outer side, and the large-coil heavy spool starts to slowly move downwards and is in direct contact with the ground, so that the phenomenon that the large-coil heavy spool is damaged due to collision with the ground is avoided.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of I -beam hoist, concretely, especially relates to a hoist with auxiliary landing for I -beam suspension of heavy disc. BACKGROUND

[0002] I -beam is used to wind metal wire or wire rope and is a kind of tool. Since the overall weight of heavy disc I -beam is heavy, the heavy disc I -beam is usually clamped and fixed by special hoist when being suspended, and then the hoist suspends the heavy disc I -beam by the hoist.

[0003] When the hoisted heavy disc I -beam is placed on the ground, since the heavy disc I -beam is directly contacted with the ground, and the hoist is not usually provided with buffering measures, the heavy disc I -beam is prone to damage after a large impact with the ground.

[0004] For the problems in the related art, no effective solution has been proposed so far. INVENTION CONTENTS

[0005] For the problems in the related art, the utility model provides a hoist with auxiliary landing for I -beam suspension of heavy disc to overcome the above technical problems existing in the prior art.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model relates to a hoist with auxiliary landing for I -beam suspension of heavy disc, which comprises a support box, characterized by that a plurality of jacking support assemblies are arranged at the bottom of the support box, a driving assembly is arranged in the support box, the driving assembly is power-connected with the jacking support assemblies, a clamping assembly is arranged at the bottom of the jacking support assembly, and a positioning assembly is arranged at the bottom of the support box.

[0008] The positioning assembly is used for positioning the I -beam, the driving assembly is used for driving the jacking support assembly to move, so that the jacking support assemblies can jack the I -beam, and the clamping assembly and the jacking support assembly cooperate to clamp and fix the I -beam.

[0009] Further, the jacking support assembly comprises a moving groove, the moving groove is arranged at the bottom of the support box, a moving column is movably connected in the moving groove, a jacking column is fixedly connected to the inner side of the moving column, one side of the jacking column is inclined, a fixing rod is fixedly connected in the moving groove, and the moving column is movably connected with the fixing rod.

[0010] Further, the driving assembly comprises a driving disc arranged in the inside of the supporting box, a driving groove is arranged in the top of the driving disc corresponding to the moving groove, a I-shaped column is movably connected in the inside of the driving groove, and the I-shaped column is fixedly connected with the corresponding moving column.

[0011] Further, a rotating groove is arranged in the inner wall of the supporting box, a rotating ring is rotatably connected in the inside of the rotating groove, the rotating ring is rotatably connected with the rotating groove, a motor is fixedly installed on the top of the supporting box, the output end of the motor is fixedly connected with the driving disc, and a protection box is fixedly installed on the top of the supporting box corresponding to the motor.

[0012] Further, the clamping assembly comprises a limiting groove, a limiting column is movably connected in the inside of the limiting groove, an L-shaped clamping column is fixedly connected at the bottom end of the limiting column, a fixed screw rod is fixedly connected on the outer side of the L-shaped clamping column, a fixed plate is fixedly connected on the outer side of the moving column, fixed nuts are arranged on the upper and lower sides of the fixed plate, and the fixed screw rod penetrates through the fixed plate and is screw-connected with the two fixed nuts.

[0013] Further, the positioning assembly comprises an adjusting groove, the adjusting groove is arranged in the bottom of the supporting box, a plurality of adjusting grooves are arranged in the circumferential direction, an adjusting screw rod is rotatably connected in the inside of the adjusting groove, an adjusting block is screw-connected on the outer surface of the adjusting screw rod, and a positioning rod is fixedly connected at the bottom of the adjusting block.

[0014] Further, the bottom of the supporting box is provided with an engaging groove, a plurality of bevel gears are arranged in the inside of the engaging groove corresponding to the adjusting screw rod, the plurality of bevel gears are engaged with each other, the adjusting screw rod is fixedly connected with the corresponding bevel gear, and the outer side of the supporting box is provided with a rotating disc.

[0015] Further, the top of the jacking column is rotatably connected with a rotating roller, the rotating roller is arranged on the top and the bottom of the L-shaped clamping column, and the top of the supporting box is fixedly connected with a connecting ring.

[0016] The utility model has the following beneficial effects:

[0017] 1、the utility model discloses a lifting device, which comprises a supporting box, a plurality of jacking supporting assemblies and clamping assemblies are movably arranged in the supporting box, a plurality of I-shaped columns are movably arranged in the supporting box corresponding to the jacking supporting assemblies, a plurality of moving columns are movably arranged in the supporting box corresponding to the clamping assemblies, and a driving assembly is arranged in the supporting box.

[0018] 2, the utility model discloses a two fixed nut is rotated and contacts the fixed screw rod fixed, then the L type clamping post is moved and the distance between L type clamping post and the jacking column can be adjusted according to the height of the heavy I -beam of big dish, all adjusting screw rods are rotated through the rotating disc and the bevel gear engaged together, so that multiple positioning rods can be adjusted according to the position of the heavy I -beam of big dish, the setting of the L type clamping post and positioning rod that can be adjusted makes that the lifting appliance can hold and fix different specifications heavy I -beam of big dish, thereby the practicability of the lifting appliance whole is improved.

[0019] Of course, implementing any product of the utility model does not necessarily need to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be needed to use the drawing of the embodiment briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0021] Figure 1 It is the external contour structure schematic diagram of the utility model;

[0022] Figure 2 It is the support box top structure schematic diagram of the utility model;

[0023] Figure 3 It is the support box bottom structure schematic diagram of the utility model;

[0024] Figure 4 It is the positioning assembly structure schematic diagram of the utility model;

[0025] Figure 5 It is the adjusting screw rod structure schematic diagram of the utility model;

[0026] Figure 6 It is the driving assembly structure schematic diagram of the utility model;

[0027] Figure 7 It is the jacking support assembly structure schematic diagram of the utility model;

[0028] Figure 8 It is the clamping assembly structure schematic diagram of the utility model.

[0029] In the drawings, the component list represented by each sign is as follows:

[0030] 1, support box; 2, jacking support assembly; 201, moving groove; 202, moving column; 203, jacking column; 204, fixed rod; 3, drive assembly; 301, drive disc; 302, drive groove; 303, I-shaped column; 304, rotating groove; 305, rotating ring; 306, motor; 307, protection box; 4, clamping assembly; 401, limiting groove; 402, limiting column; 403, L-shaped clamping column; 404, fixed screw; 405, fixed plate; 406, fixed nut; 5, positioning assembly; 501, adjusting groove; 502, adjusting screw; 503, adjusting block; 504, positioning rod; 505, meshing groove; 506, bevel gear; 507, rotating disc; 6, rotating roller; 7, connecting ring. DETAILED DESCRIPTION

[0031] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In the description of the utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated components or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] Please refer to Figures 1-8 The utility model discloses a kind of lifting devices with auxiliary landing for large-disk heavy I-beam suspension, including support box 1, the bottom of the support box 1 is provided with several jacking support assemblies 2, the inside of the support box 1 is provided with drive assembly 3, the drive assembly 3 is power connected with several jacking support assemblies 2, the bottom of the jacking support assembly 2 is provided with clamping assembly 4, the bottom of the support box 1 is provided with positioning assembly 5.

[0034] The positioning assembly 5 is used for positioning the I-beam, the drive assembly 3 is used to drive the jacking support assembly 2 to move, so that several jacking support assemblies 2 can jacking the I-beam, and the clamping assembly 4 cooperates with the jacking support assembly 2 to complete the clamping and fixing of the I-beam.

[0035] When the large-diameter heavy I-beam is suspended, the support box 1 is placed on the top of the large-diameter heavy I-beam, the positioning assembly 5 is moved to the inside of the large-diameter heavy I-beam and is positioned, then the driving assembly 3 is driven, so that the driving assembly 3 drives the plurality of jacking support assemblies 2 to move, so that the jacking support assemblies 2 can jacking up the large-diameter heavy I-beam upwards, and the clamping end of the clamping assembly 4 is moved to the bottom of the large-diameter heavy I-beam under the driving of the jacking support assemblies 2, so that the clamping assembly 4 cooperates with the jacking support assemblies 2 to clamp and fix the large-diameter heavy I-beam.

[0036] The support box 1 is moved downwards and the bottom of the clamping assembly 4 is in contact with the ground, then the driving assembly 3 drives the plurality of jacking support assemblies 2, so that the jacking support assemblies 2 drive the clamping assembly 4 to move outward, when the clamping assembly 4 moves out from the bottom of the large-diameter heavy I-beam, the jacking support assemblies 2 continue to move outward, at this time the large-diameter heavy I-beam can slowly move downwards and be in contact with the ground, the above arrangement makes the large-diameter heavy I-beam not have a large impact with the ground when the large-diameter heavy I-beam is placed on the ground, so that the phenomenon that the large-diameter heavy I-beam is damaged due to the impact with the ground is avoided.

[0037] In an embodiment, for the jacking support assembly 2, the jacking support assembly 2 comprises a moving groove 201, the moving groove 201 is opened in the bottom of the support box 1, a moving column 202 is movably connected in the inside of the moving groove 201, a jacking column 203 is fixedly connected to the inside of the moving column 202, one side of the jacking column 203 is obliquely arranged, a fixing rod 204 is fixedly connected in the inside of the moving groove 201, and the moving column 202 is movably connected with the fixing rod 204.

[0038] By placing the large disc heavy I-beam on the ground, then the plurality of moving columns 202 are outside the large disc heavy I-beam, then the plurality of moving columns 202 are moved, so that the plurality of moving columns 202 drive the jacking column 203 to move to the large disc heavy I-beam, at this time the inclined surface of the jacking column 203 can be in contact with the disc on the upper side of the large disc heavy I-beam, and as the jacking column 203 continuously moves, the jacking column 203 can jack up the large disc heavy I-beam through the inclined surface, so that the bottom of the large disc heavy I-beam is separated from the ground; at the same time, when the clamped large disc heavy I-beam is placed on the ground, as the jacking column 203 continuously moves outward, the inclined surface of the jacking column 203 can be in contact with the disc of the large disc heavy I-beam, and under the support of the inclined surface, the large disc heavy I-beam can slowly move downward and contact the ground. When the moving column 202 moves, the moving slot 201 and the fixed rod 204 can limit and guide the moving column 202, so that the stability of the moving column 202 during movement can be guaranteed.

[0039] In one embodiment, for the above-mentioned driving assembly 3, the driving assembly 3 comprises a driving disc 301, the driving disc 301 is arranged inside the support box 1, a driving slot 302 is opened on the top of the driving disc 301 corresponding to the moving slot 201, and a I-shaped column 303 is movably connected inside the driving slot 302, and the I-shaped column 303 is fixedly connected with the corresponding moving column 202.

[0040] By rotating the driving disc 301, the driving disc 301 can push the I-shaped column 303 through the driving slot 302, and the moving column 202 can rotate in the moving slot 201 under the driving of the I-shaped column 303. Since the plurality of driving slots 302 and the I-shaped column 303 are arranged on one driving disc 301, only the driving disc 301 needs to be rotated, and multiple moving columns 202 can be moved synchronously. This arrangement enables the moving column 202 jacking column 203 to simultaneously jack up the large disc heavy I-beam through the disc, so that the stability of the large disc heavy I-beam during upward movement or downward movement can be guaranteed.

[0041] In one embodiment, for the above-mentioned support box 1, a rotating slot 304 is opened on the inner wall of the support box 1, a rotating ring 305 is rotatably connected inside the rotating slot 304, the rotating ring 305 is rotatably connected with the rotating slot 304, a motor 306 is fixedly installed on the top of the support box 1, the output end of the motor 306 is fixedly connected with the driving disc 301, and a protection box 307 is fixedly installed on the top of the support box 1 corresponding to the motor 306.

[0042] The motor 306 is driven to drive the driving disc 301 to rotate automatically inside the support box 1, which makes the operation more labor-saving when the large disc heavy I-beam is jacked up by the jacking column 203 on the moving column 202. Meanwhile, the rotating driving disc 301 can drive the rotating ring 305 to rotate inside the rotating groove 304, which makes the connection between the driving disc 301 and the support box 1 more close, and the stability of the driving disc 301 during rotation can be guaranteed.

[0043] In one embodiment, for the above-mentioned clamping assembly 4, the clamping assembly 4 comprises a limiting groove 401, a limiting column 402 movably connected inside the limiting groove 401, an L-shaped clamping column 403 fixedly connected to the bottom end of the limiting column 402, a fixed screw rod 404 fixedly connected to the outer side of the L-shaped clamping column 403, a fixed plate 405 fixedly connected to the outer side of the moving column 202, and a fixed nut 406 arranged on the upper and lower sides of the fixed plate 405. The fixed screw rod 404 penetrates the fixed plate 405 and is threadedly connected with the two fixed nuts 406.

[0044] When the moving column 202 moves, the L-shaped clamping column 403 can be moved together through the limiting groove 401 and the limiting column 402. When the jacking column 203 completes the jacking of the large disc heavy I-beam through the inclined surface, the L-shaped clamping column 403 can be moved to the bottom of the large disc heavy I-beam at this time, so that the L-shaped clamping column 403 cooperates with the jacking column 203 to complete the later fixing of the large disc heavy I-beam. At the same time, when the large disc heavy I-beam is placed on the ground, only when the L-shaped clamping column 403 is completely moved out from the bottom of the large disc heavy I-beam, the disc on the upper side of the large disc heavy I-beam will also be in contact with the inclined surface of the jacking column 203, and slowly move downward with the assistance of the inclined surface. By rotating the two fixed nuts 406, the two fixed nuts 406 no longer limit the fixed screw rod 404 at this time. The L-shaped clamping column 403 can drive the limiting column 402 to move inside the limiting groove 401, and the fixed screw rod 404 slides inside the fixed plate 405, so that the distance between the L-shaped clamping column 403 and the jacking column 203 can be adjusted according to the height of the large disc heavy I-beam. After adjustment, the two fixed nuts 406 are rotated again, and the two fixed nuts 406 fix the fixed screw rod 404 through the fixed plate 405. This setting makes the lifting device complete the clamping and fixing of large disc heavy I-beams of different heights, and does not produce a large impact when the large disc heavy I-beam is placed on the ground.

[0045] In one embodiment, for the above positioning assembly 5, the positioning assembly 5 comprises an adjusting groove 501, which is arranged on the bottom of the supporting box 1, a plurality of adjusting grooves 501 are arranged in a circular array, an adjusting screw 502 is rotatably connected inside the adjusting groove 501, an adjusting block 503 is threadedly connected to the outer surface of the adjusting screw 502, and a positioning rod 504 is fixedly connected to the bottom of the adjusting block 503.

[0046] When the large-diameter heavy I-beam is suspended, the supporting box 1 is placed on the upper side of the large-diameter heavy I-beam, the plurality of positioning rods 504 are moved to the inside of the large-diameter heavy I-beam, and then the plurality of adjusting screws 502 are rotated, so that the plurality of adjusting screws 502 drive the corresponding positioning rods 504 to move through the corresponding adjusting blocks 503, so that the plurality of positioning rods 504 are in contact with the inner wall of the large-diameter heavy I-beam, and the plurality of positioning rods 504 cooperate to position the large-diameter heavy I-beam, so that when the plurality of jacking columns 203 are jacked upward or moved downward through the inclined surface, the large-diameter heavy I-beam will not shake randomly, so that the stability of the large-diameter heavy I-beam during clamping and fixing or contact fixing can be guaranteed.

[0047] In one embodiment, for the above supporting box 1, a meshing groove 505 is arranged on the bottom of the supporting box 1, a plurality of bevel gears 506 are arranged inside the meshing groove 505 corresponding to the adjusting screw 502, the plurality of bevel gears 506 are meshed together, the adjusting screw 502 is fixedly connected with the corresponding bevel gear 506, and a rotating disc 507 is arranged on the outer side of the supporting box 1.

[0048] The adjusting screw 502 is rotated through the rotating disc 507, and the rotating adjusting screw 502 drives all the adjusting screws 502 to rotate through the meshed bevel gears 506, so that the plurality of positioning rods 504 can move synchronously, which guarantees the positioning effect of the plurality of positioning rods 504 on the large-diameter heavy I-beam, and when positioning large-diameter heavy I-beams of different diameters, only the rotating disc 507 needs to be rotated to adjust the position of the plurality of positioning rods 504 according to the diameter of the large-diameter heavy I-beam, which is relatively convenient.

[0049] In one embodiment, for the above jacking column 203, a rotating roller 6 is rotatably connected to the top of the jacking column 203, the rotating roller 6 is arranged on the top and the bottom of the L-shaped clamping column 403, and a connecting ring 7 is fixedly connected to the top of the supporting box 1.

[0050] When the inclined surface of the jacking column 203 is in contact with the disc of the large disc heavy I-beam through the rotating roller 6, the setting makes the jacking column 203 have greater friction with the disc of the large disc heavy I-beam when jacking or placing the large disc heavy I-beam through the inclined surface, thereby avoiding the phenomenon of wear of the jacking column 203 and the large disc heavy I-beam due to friction, and the rotating roller 6 on the L-shaped clamping column 403 also plays the same role. By fixing the lifting rope on the crane in the inside of the connecting ring 7, the crane can drive the support box 1 to rise and fall through the lifting rope, and the connecting ring 7 is provided with a plurality of connecting rings, which makes the support box 1 can keep stable lifting.

[0051] Through the above technical scheme, 1, by moving the lifting device downward and making the bottom of the clamping assembly 4 in contact with the ground, then driving the assembly 3 to drive several jacking support assemblies 2 and clamping assemblies 4 to move to the outside of the large disc heavy I-beam, when the clamping assembly 4 is completely moved out from the bottom of the large disc heavy I-beam, the jacking support assembly 2 continues to move outward and makes the large disc heavy I-beam start to move slowly downward and directly contact with the ground, thereby avoiding the phenomenon of damage of the large disc heavy I-beam due to impact with the ground; 2, by rotating the two fixed nuts 406 and contacting the fixed screw rod 404, then moving the L-shaped clamping column 403 and making the distance between the L-shaped clamping column 403 and the jacking column 203 can be adjusted according to the height of the large disc heavy I-beam, rotating the adjusting screw rod 502 through the rotating disc 507 and the bevel gear 506 meshed together, so that the plurality of positioning rods 504 can be adjusted according to the position of the large disc heavy I-beam, the setting of the adjustable L-shaped clamping column 403 and the positioning rod 504 makes the lifting device can clamp and fix different specifications of large disc heavy I-beam, thereby improving the practicability of the lifting device as a whole.

[0052] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The preferred embodiments of the utility model disclosed above are only used for illustrating the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.

Claims

1. A sling with auxiliary landing for suspension of large-diameter heavy I-beam, comprising a support box (1), characterized in that, The bottom of the support box (1) is provided with a plurality of jacking support assemblies (2), the inside of the support box (1) is provided with a driving assembly (3), the driving assembly (3) is power connected with the plurality of jacking support assemblies (2), the bottom of the jacking support assembly (2) is provided with a clamping assembly (4), and the bottom of the support box (1) is provided with a positioning assembly (5); The positioning assembly (5) is used for positioning the I-shaped wheel, the driving assembly (3) is used for driving the jacking support assembly (2) to move, so that the plurality of jacking support assemblies (2) can jacking the I-shaped wheel, and the clamping assembly (4) cooperates with the jacking support assembly (2) to complete clamping and fixing of the I-shaped wheel.

2. The hoist with auxiliary landing for suspension of large-diameter work- roll work rolls according to claim 1, characterized in that The jacking support assembly (2) comprises a moving groove (201) which is arranged in the bottom of the support box (1), a moving column (202) which is movably connected in the moving groove (201), a jacking column (203) which is fixedly connected to the inner side of the moving column (202), the jacking column (203) is arranged on one side, a fixed rod (204) which is fixedly connected in the moving groove (201), and the moving column (202) is movably connected with the fixed rod (204).

3. The hoist with auxiliary landing for suspension of large-diameter work- roll work rolls according to claim 2, characterized in that, The driving assembly (3) comprises a driving disc (301) which is arranged in the inside of the support box (1), a driving groove (302) which is arranged in the top of the driving disc (301) and corresponds to the moving groove (201), a I-shaped column (303) which is movably connected in the driving groove (302), and the I-shaped column (303) is fixedly connected with the corresponding moving column (202).

4. The hoist with auxiliary landing for suspension of large-diameter work- roll work rolls according to claim 3, characterized in that, The inner wall of the support box (1) is provided with a rotating groove (304), the rotating groove (304) is rotatably connected with a rotating ring (305), the rotating ring (305) is rotatably connected with the rotating groove (304), the top of the support box (1) is fixedly installed with a motor (306), the output end of the motor (306) is fixedly connected with the driving disc (301), and the top of the support box (1) is fixedly installed with a protection box (307) corresponding to the motor (306).

5. The hoist with auxiliary landing for suspension of large-diameter work- roll bogies according to claim 2, characterized in that, The clamping assembly (4) comprises a limiting groove (401), a limiting column (402) movably connected in the limiting groove (401), an L-shaped clamping column (403) fixedly connected to the bottom end of the limiting column (402), a fixed screw rod (404) fixedly connected to the outer side of the L-shaped clamping column (403), a fixed plate (405) fixedly connected to the outer side of the moving column (202), a fixed nut (406) arranged on the upper and lower sides of the fixed plate (405), and the fixed screw rod (404) penetrates through the fixed plate (405) and is screw connected with the two fixed nuts (406).

6. The hoist with auxiliary landing for suspension of large-diameter work- roll bogies according to claim 1, characterized in that The positioning assembly (5) comprises an adjusting groove (501) which is arranged at the bottom of the support box (1), a plurality of adjusting grooves (501) are arranged in a circumferential array, an adjusting screw (502) is rotatably connected to the inside of the adjusting groove (501), an adjusting block (503) is threadedly connected to the outer surface of the adjusting screw (502), and a positioning rod (504) is fixedly connected to the bottom of the adjusting block (503).

7. The hoist with auxiliary landing for suspension of large-diameter work- roll bogies according to claim 6, characterized in that, The bottom of the support box (1) is provided with an engaging groove (505), a plurality of bevel gears (506) are arranged in the engaging groove (505) and correspond to the adjusting screw (502), the plurality of bevel gears (506) are meshed with each other, the adjusting screw (502) and the corresponding bevel gear (506) are fixedly connected together, and the outer side of the support box (1) is provided with a rotating disc (507), and the adjusting screw (502) and the rotating disc (507) are fixedly connected together.

8. The hoist with auxiliary landing for heavy disc rebar wheel suspension according to claim 5, characterized in that, The top of the jacking column (203) is rotatably connected with a rotating roller (6), the rotating roller (6) is arranged at the top and the bottom of the L-shaped clamping column (403), and the top of the support box (1) is fixedly connected with a connecting ring (7).