A climbing frame system for building construction and a method of use

Abstract

The application discloses a climbing frame system for building construction and a use method thereof, which comprises a sliding groove arranged on one side of a mounting frame, a liftable lifting structure is arranged on one side of the mounting frame, a supportable support frame is arranged on the inner side of the mounting frame, the number of the support frames is plural, the support frames are fixedly connected through bolts, and limiting grooves are arranged on the two sides of the inner wall of the support frame. The climbing frame system for building construction is characterized in that the mounting frame, the lifting structure and the support frame are cooperatively arranged, the sub-motor is started to move the positioning frame upwards, the support frame in the mounting frame is lifted, another support frame is added at the bottom of the support frame, the two support frames are connected through bolts, the height of the device can be continuously increased through repeated operation, the lifting limit of the bearing table is increased, and the lifting limit of the device can be increased along with the increasing height of the building.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a climbing frame system for building construction and a use method thereof. BACKGROUND

[0002] The climbing frame is also called a lifting frame, and can be divided into hydraulic type, electric type and manual hand-pulling type according to the power source. It is a new type of scaffold system developed in recent years, and is mainly applied to high-rise shear wall type buildings. It can climb up or down along the building.

[0003] However, the existing device has the following problems:

[0004] 1. Since the building is continuously increasing in height during construction, the height that most of the existing devices can be raised has a certain limit, so that the device cannot conveniently increase the limit of the height that can be raised as the building continuously increases in height.

[0005] 2. Most of the existing devices have low stability, so that the safety of the device is low. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the deficiencies of the prior art, the present application provides a climbing frame system for building construction, which has the advantages of continuously increasing the limit of the height that can be raised and high stability, and solves the problems that since the building is continuously increasing in height during construction, the height that most of the existing devices can be raised has a certain limit, so that the device cannot conveniently increase the limit of the height that can be raised as the building continuously increases in height, and most of the existing devices have low stability and low safety.

[0008] (II) Technical solutions

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a climbing frame system for building construction, comprising a mounting frame and a sliding groove opened on one side of the mounting frame, a lifting structure for lifting is mounted on the mounting frame and located on one side of the sliding groove, a support frame capable of supporting is connected to the inner side of the mounting frame, the number of support frames is multiple, the multiple support frames are vertically arranged and fixedly connected through bolts, limiting grooves capable of limiting are opened on both sides of the inner wall of the support frame, a support plate capable of supporting is connected to the top of one of the support frames through a bolt, a main motor providing power is mounted on the top of the support plate, a winding drum capable of winding is mounted on the output end of the main motor through a speed reducer, a shaft coupling and a transmission shaft, the winding drum is rotatably mounted on the top of the support plate, a steel wire rope capable of being connected is wound on the surface of the winding drum, a bearing structure capable of bearing is fixedly connected to one end of the steel wire rope, and the bearing structure is vertically fitted in the support frame.

[0010] Preferably, the lifting structure comprises two fixed frames fixed on one side of the mounting frame by bolts, and the fixed frames are vertically arranged, and the top of one of the fixed frames is fixedly connected with a powered auxiliary motor.

[0011] Preferably, the auxiliary motor is rotatably connected with a screw rod through a shaft at one end of one of the fixed frames, and the bottom end of the screw rod is rotatably connected with the other fixed frame.

[0012] Preferably, the surface of the screw rod is threadedly connected with a positioning frame, one side of the positioning frame is fixedly connected with a limiting sliding block, and one side of the sliding block is provided with a limiting positioning hole.

[0013] Preferably, the positioning hole is provided with a positioning column, and both ends of the positioning column are fixedly connected with the two fixed frames.

[0014] Preferably, the bearing structure comprises a bearing table and a safety guard installed on the bottom wall of the bearing table, both sides of the bearing table are fixedly connected with limiting clamping blocks, and the outer surface of the clamping block is vertically and slidingly connected with a limiting groove.

[0015] Preferably, both sides of the mounting frame are connected with a reinforcing structure through bolts to improve stability, the reinforcing structure comprises a tripod connected with the two sides of the mounting frame by bolts to improve stability, the bottom of the tripod is connected with a supporting bottom plate through bolts, and the upper surface of the bottom plate is inserted with a fixed pin.

[0016] Preferably, a positioning screw hole is formed in the inner wall of the supporting frame on one side of the sliding groove, the inner wall of the screw hole is threadedly connected with a fixed screw column, and one end of the screw column passing through the screw hole is threadedly connected with the positioning hole.

[0017] Preferably, the upper surface of the supporting plate is provided with a limiting limiting hole, the inner wall of the limiting hole is connected with an anti-abrasion ring, and the inner wall of the anti-abrasion ring is slidingly connected with the steel wire rope.

[0018] Preferably: the top of the support plate is provided with an anti-falling locking structure located outside the transmission shaft, the anti-falling locking structure comprises a driving disc mounted on the transmission shaft and a brake structure slidingly mounted on the top of the support plate, a one-way transmission body is mounted on the driving disc, the brake structure comprises a fixing piece which is adjustable in transverse position relative to the top of the support plate, a sleeve which is sleeved on the outside of the transmission shaft is mounted on the top of the fixing piece and the sleeve and the fixing piece are in rotating fit, a sliding sleeve is mounted in the sleeve and a driving body extending outward is mounted in the sliding sleeve, the driving body is adapted to form one-way transmission fit with the one-way transmission body, the opposite sides of the driving disc and the sliding sleeve are provided with slope structures, the sliding sleeve is arranged outside the transmission shaft, a spacer is mounted in the sleeve and a spring is connected between the spacer and the sliding sleeve, a positioning ring which is sleeved on the outside of the transmission shaft is fixed in the sleeve, the positioning ring and the sliding sleeve are connected through a plurality of circumferentially distributed universal hinge rods, the inclination directions of each universal hinge rod are consistent, a polyurethane wear-resistant rubber sleeve is mounted between the sliding sleeve and the positioning ring, or a polyurethane wear-resistant rubber layer is wrapped on the outer wall of the universal hinge rod.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present application provides a climbing frame system for building construction, which has the following beneficial effects:

[0021] 1. The climbing frame system for building construction, by the cooperation of the mounting frame, the lifting structure and the support frame, the positioning frame can be moved upward by starting the auxiliary motor, thereby raising the support frame in the mounting frame, and another support frame is added at the bottom of the support frame, and the two support frames are connected by bolts, and the height of the device can be continuously increased by repeating this operation several times, thereby increasing the limit of the lifting of the bearing table, so that the device can increase the lifting limit as the building heightens.

[0022] 2. The climbing frame system for building construction, by the cooperation of the triangular frame and the bottom plate, the stability of the device can be improved, and by hammering the pins into the ground, the stability of the device can be further improved, and by the cooperation of the mounting frame, the support frame, the bearing structure and the reinforcing structure, the device can be disassembled, thereby facilitating the transportation of the device.

[0023] 3. The climbing frame system for building construction, by the cooperation of the driving disc, the sleeve, the spacer, the fixing ring, the sliding sleeve, the driving body and the one-way rotating body, when the support plate is pulled upward, the one-way transmission body and the driving body adapt to synchronous movement, when the support plate is passively lowered, the one-way transmission body and the driving body rotate relative to each other, and the slope structures on the opposite sides of the driving disc and the sliding sleeve are used to complete the separation of the driving body and the one-way transmission body and the locking of the transmission shaft by the outward hinge rod driven by the sliding sleeve, thereby actively preventing the falling of the bearing structure. The safety problem of CN112211420A is solved by actively taking measures through the servo cylinder to complete passive braking to avoid equipment safety problem. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a climbing formwork system for building construction proposed in this invention;

[0025] Figure 2 This is an exploded structural diagram of an installation frame for a climbing scaffold system for building construction proposed in this invention;

[0026] Figure 3 This is a schematic diagram of the lifting structure of a climbing formwork system for building construction proposed in this invention;

[0027] Figure 4 This is a schematic diagram of the load-bearing structure of a climbing formwork system for building construction proposed in this invention;

[0028] Figure 5 This is an exploded view of a reinforced structure for a climbing formwork system used in building construction, as proposed in this invention.

[0029] Figure 6 This is a structural schematic diagram of another embodiment of the climbing formwork system for building construction proposed in this invention;

[0030] Figure 7 for Figure 6 Cross-sectional view of the fall arrest and descent control structure;

[0031] Figure 8 for Figure 7 Cross-sectional view of the unidirectional transmission assembly;

[0032] Figure 9 for Figure 6 A structural diagram showing the positions of the middle sliding sleeve, spacer, and positioning ring;

[0033] Figure 10 for Figure 6 A schematic diagram of the overall structure of the middle sliding sleeve.

[0034] In the diagram: 1. Mounting frame; 2. Slide groove; 3. Lifting structure; 301. Fixed frame; 302. Auxiliary motor; 303. Screw; 304. Positioning frame; 305. Slider; 306. Positioning hole; 307. Positioning post; 4. Support frame; 5. Limiting groove; 6. Threaded hole; 7. Support plate; 8. Main motor; 9. Reel; 10. Steel wire rope; 11. Bearing structure; 1101. Bearing platform; 1102. Guardrail; 1103. Locking block; 12. Reinforcing structure; 1201. Tripod; 1202. Base plate; 1203. Pin; 13. Threaded post; 14. Anti-wear ring. Detailed Implementation

[0035] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0036] Please refer to Figures 1-5 A climbing frame system for building construction, comprising a chute 2 opened on one side of the mounting frame 1, a lifting structure 3 is mounted on one side of the mounting frame 1 located on the chute 2, the lifting structure 3 comprises two vertical fixed frames 301 fixed on one side of the mounting frame 1 by bolts, the top of the top fixed frame 301 is fixedly connected with a powered auxiliary motor 302, the auxiliary motor 302 and the output end are installed with a rotatable screw rod 303 through a speed reducer, a shaft coupling, a transmission shaft, and then through one end of the top fixed frame 301, the bottom end of the screw rod 303 is rotatably installed with another fixed frame 301, the surface of the screw rod 303 is threadedly connected with a positioning frame 304, the two sides of the positioning frame 304 are fixedly connected with a limiting sliding block 305, the sliding block 305 is provided with a limiting positioning hole 306, the surface of the positioning frame 304 is slidably sleeved with a positioning column 307 on both sides of the screw rod 303, the two ends of the positioning column 307 are fixedly connected with the two fixed frames 301, the mounting frame 1 serves to install the lifting structure 3 and limit the supporting frame 4, the screw rod 303 is rotated by starting the auxiliary motor 302, thereby driving the positioning frame 304 to move up and down, the positioning column 307 serves to position and guide the positioning frame 304, and the fixed frame 301 serves to install the lifting structure 3;

[0037] The inner side of the mounting frame 1 is clamped with a supporting supporting frame 4, the number of the supporting frame 4 is multiple, and the multiple supporting frames 4 are vertically fixedly connected by bolts, the two sides of the inner wall of the supporting frame 4 are provided with limiting grooves 5, the inner wall of the supporting frame 4 is provided with a threaded hole 6 on one side of the chute 2, the inner wall of the threaded hole 6 is threadedly connected with a fixed threaded column 13, one end of the threaded column 13 passing through the threaded hole 6 is threadedly connected with the positioning hole 306, the supporting frame 4 is provided to support the bearing structure 11, the supporting frame 4 and the sliding block 305 are connected through the cooperation of the threaded hole 6, the threaded column 13 and the positioning hole 306, so that the supporting frame 4 moves up and down with the positioning frame 304;

[0038] The top of the support frame 4 is bolted with a supportable support plate 7, the upper surface of the support plate 7 is provided with a limitable limiting hole, the inner wall of the limiting hole is clamped with an anti-abrasion ring 14, the inner wall of the anti-abrasion ring 14 is in sliding fit with the steel wire rope 10, the top of the support plate 7 is provided with a power-provided main motor 8, the output end of the main motor 8 is provided with a windable reel 9 through a speed reducer and a shaft coupling, the surface of the reel 9 is wound with a connectable steel wire rope 10, one end of the steel wire rope 10 is fixedly connected with a bearable bearing structure 11, the bearing structure 11 comprises a bearing table 1101 and a safety-improvable guardrail 1102 fixed to the inner bottom wall of the bearing table 1101, both sides of the bearing table 1101 are fixedly connected with limitable clamping blocks 1103, the outer surface of the clamping blocks 1103 is clamped with the limiting grooves 5, through the cooperation of the limiting hole and the anti-abrasion ring 14, the steel wire rope 10 can pass through the anti-abrasion ring 14 and be connected with the bearing table 1101, and then when the main motor 8 is started, the steel wire rope 10 is wound on the reel 9, and then the bearing table 1101 is lifted, the anti-abrasion ring 14 can reduce the abrasion of the steel wire rope 10 during lifting, the bearing table 1101 plays a role of bearing workers or construction articles, through the cooperation of the clamping blocks 1103 and the limiting grooves 5, the bearing table 1101 can be limited, and then the bearing table 1101 moves up and down according to the track of the limiting grooves 5, through the arrangement of the guardrail 1102, when the bearing table 1101 is lifted or lowered, the workers can hold the guardrail 1102, and then the safety of the device is improved;

[0039] Both sides of the mounting frame 1 are bolted with a stability-improvable reinforcing structure 12, the reinforcing structure 12 comprises a stability-improvable tripod 1201 bolted on both sides of the mounting frame 1, the bottom of the tripod 1201 is bolted with a supportable bottom plate 1202, the upper surface of the bottom plate 1202 is inserted with a fixable pin 1203, through the cooperation of the tripod 1201 and the bottom plate 1202, the contact area of the device with the ground can be improved, and the stability of the device is further improved, the tripod 1201 plays a role of connecting and reinforcing the mounting frame 1 and the bottom plate 1202, and through the arrangement of the pin 1203, the position of the bottom plate 1202 can be fixed;

[0040] The electrical components appearing in the text are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.

[0041] In summary, the climbing frame system for building construction, when in use, first, the device is placed in the designated place, and the mounting frame 1 and the bottom plate 1202 are connected with the tripod 1201 through bolt connection, and the pin is hammered into fixation, then the main motor 8 is started to make the bearing table 1101 rise to the highest position, and the threaded column 13 is rotated to connect the support frame 4 with the slider 305 at the bottom, then the auxiliary motor 302 is started to make the support frame 4 rise, and another support frame 4 is added at the bottom of the support frame 4, and the two support frames 4 are connected through bolt connection, then the threaded column 13 is rotated to pull out, the slider 305 is lowered to the lowest position, a support frame 4 is put into the mounting frame 1, the support frame 4 and the slider 305 are connected through the threaded column 13, and the device is adjusted to the appropriate height after repeated operation, finally, the bottommost support frame 4 is connected with the mounting frame 1 through bolt, finally, the main motor 8 is started in reverse to make the bearing table 1101 descend to the bottom, and the construction personnel stand on or put construction articles on the bearing table 1101, and the main motor 8 is started to make the bearing table rise.

[0042] On the basis of the above embodiment, the following improvements are made: the top of the support plate 7 is provided with a falling prevention and slow descent structure located outside the transmission shaft, the falling prevention and slow descent structure comprises a driving disc 41 mounted on the transmission shaft and a brake structure slidingly mounted on the top of the support plate 7, the driving disc 41 is provided with a one-way transmission body 42, the brake structure comprises a fixing member 43 which is adjustable in transverse position relative to the top of the support plate 7, the fixing member 43 is adjusted in transverse position by a guide rail on the top of the support plate 7, and the position is limited by a bolt on the guide rail, wherein the bottom of the fixing member 43 is provided with a handle, the support plate 7 is provided with a slot for the transverse sliding of the handle, the top of the fixing member 43 is provided with a sleeve 45 sleeved on the outside of the transmission shaft and the sleeve 45 and the fixing member 43 are one-way transmission matched (traditional ratchet and pawl structure), the sleeve 45 rotates when the steel cable 7 is reeled in and is locked (does not rotate) when the steel cable 7 is payed out, the sleeve 45 is internally provided with a sliding sleeve 46 and the sliding sleeve 46 is internally provided with a driving body 44 extending outward, the driving body 44 is adapted to form one-way transmission matching with the one-way transmission body 42, the opposite sides of the driving disc 41 and the sliding sleeve 46 are both provided with slope structures, the sliding sleeve 46 is arranged outside the transmission shaft, the sleeve 45 is internally provided with a spacer 47 and the spacer 47 and the sliding sleeve 46 are connected by a spring 48, the sleeve 45 is internally fixed with a positioning ring 49 sleeved on the outside of the transmission shaft, the positioning ring 49 and the sliding sleeve 46 are connected by a plurality of circumferentially distributed universal hinge rods 410, the inclination directions of each universal hinge rod 410 are consistent, the rod bodies of the universal hinge rods 410 are both provided with universal joint structures, the universal joint structures are connected with corresponding discs by bolts, the sliding sleeve 46 and the positioning ring 49 are provided with a polyurethane wear-resistant rubber sleeve 411, or the outer walls of the universal hinge rods 410 are wrapped with a polyurethane wear-resistant rubber layer. A pressure bearing ring is installed between the spring 48 and the sliding sleeve 46, the pressure bearing ring is part of the sliding sleeve 46 and is assembled with the sliding sleeve 46 body by rollers or balls.

[0043] When assembling on the support frame 4, the operator adjusts the position of the fixing member 43 relative to the support plate 7 by driving the handle, so that the driving body 44 and the one-way transmission body 42 form a one-way transmission structure, the driving body 44 and the one-way transmission body 42 rotate synchronously when the steel wire rope 10 is ascending, and the sleeve 45 is also in a rotating state, the driving body 44 (ratchet) and the one-way transmission body 42 (pawl) are in a relative rotating state when the steel wire rope 10 is descending, and the sleeve 45 is in a jamming state, if the main motor 8 fails and the bearing structure 11 is passively descending, the transmission shaft rotates relative to the one-way transmission body 42 and the driving body 44, the driving disc 41 drives the sliding sleeve 46 to move close to the spacer sleeve 47 and also rotates by a certain angle, the rotation is achieved by setting a guide block on the outer side of the sliding sleeve 46 and a guide groove inside the sleeve 45 which gradually moves close to the spacer sleeve along the axial direction, the guide groove and the guide block are slidingly matched, and due to the rotation and close movement of the sliding sleeve 45 to the spacer sleeve 47, the universal hinge rod 410 is actively wrapped around the transmission shaft to achieve the braking effect, when the main motor 8 is ascending normally, the transmission shaft moves synchronously through the one-way transmission body 42 and the driving body 44, and when the main motor 8 is actively descending, only the position of the fixing member 43 needs to be adjusted horizontally, so that the driving disc 41 and the sliding sleeve 46 are completely separated.

[0044] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0045] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A climbing formwork system for building construction, comprising a mounting frame (1) and a chute (2) formed on one side of the mounting frame (1), characterized in that: A lifting structure (3) for raising is installed on the mounting frame (1) and on one side of the slide groove (2). A support frame (4) for support is snapped into the inner side of the mounting frame (1). There are multiple support frames (4). The multiple support frames (4) are arranged vertically and fixedly connected by bolts. Limiting grooves (5) for limiting are opened on both sides of the inner wall of the support frame (4). A support plate (7) for support is connected to the top of one of the support frames (4) by bolts. A main motor (8) for providing power is installed on the top of the support plate (7). A winding reel (9) for winding is installed at the output end of the main motor (8) through a reducer, coupling, and transmission shaft. The reel (9) is rotatably installed on the top of the support plate (7). A connectable steel wire rope (10) is wound on the surface of the reel (9). A load-bearing structure (11) for bearing is fixedly connected to one end of the steel wire rope (10). The load-bearing structure (11) is vertically adapted to the inside of the support frame (4). A fall arrestor structure is installed on the top of the support plate (7). The fall arrestor structure is located on the outside of the drive shaft. The fall arrestor structure includes a drive disc (41) installed on the drive shaft and a brake structure slidably installed on the top of the support plate (7). A one-way transmission body (42) is installed on the drive disc (41). The brake structure includes a fixing member (43) whose lateral position relative to the top of the support plate (7) is adjustable. A sleeve (45) fitted on the outside of the drive shaft is installed on the top of the fixing member (43), and the sleeve (45) and the fixing member (43) are rotatably engaged. A sliding sleeve (46) is installed inside the sleeve (45), and an outwardly extending drive body (44) is installed inside the sliding sleeve (46). The drive body (44) is adapted to form a one-way transmission body (42). In the unidirectional transmission, the drive disc (41) and the sliding sleeve (46) are arranged on opposite sides with a sloping structure. The sliding sleeve (46) is arranged on the outside of the transmission shaft. A spacer (47) is installed inside the sleeve (45), and a spring (48) is connected between the spacer (47) and the sliding sleeve (46). A positioning ring (49) fitted on the outside of the transmission shaft is fixed inside the sleeve (45). The positioning ring (49) and the sliding sleeve (46) are connected by multiple circumferentially distributed universal joint rods (410), and the inclination direction of each universal joint rod (410) is consistent. A polyurethane wear-resistant rubber sleeve (411) is installed between the sliding sleeve (46) and the positioning ring (49), or the outer wall of the universal joint rod (410) is wrapped with a polyurethane wear-resistant rubber layer.

2. The climbing formwork system for building construction according to claim 1, characterized in that: The lifting structure (3) includes a fixed frame (301) that is fixed to one side of the mounting frame (1) by bolts. There are two fixed frames (301) arranged vertically. One of the fixed frames (301) has an auxiliary motor (302) that can provide power fixedly connected to the top.

3. The climbing formwork system for building construction according to claim 2, characterized in that: The output end of the auxiliary motor (302) passes through one end of one of the fixed frames (301) and is mounted with a rotatable screw (303) via a coupling. The bottom end of the screw (303) is rotatably engaged with the other fixed frame (301).

4. The climbing formwork system for building construction according to claim 3, characterized in that: The screw (303) is threadedly connected to a positioning frame (304), and a limitable slider (305) is fixedly connected to one side of the positioning frame (304). A limitable positioning hole (306) is opened on one side of the slider (305).

5. A climbing formwork system for building construction according to claim 4, characterized in that: A positioning post (307) is installed in the positioning hole (306), and the two ends of the positioning post (307) are fixedly connected to two fixing brackets (301).

6. A climbing formwork system for building construction according to claim 5, characterized in that: The bearing structure (11) includes a bearing platform (1101) and a guardrail (1102) installed on the inner bottom wall of the bearing platform (1101) to improve safety. Both sides of the bearing platform (1101) are fixedly connected with a limiting block (1103). The outer surface of the block (1103) slides vertically with the limiting groove (5).

7. A climbing formwork system for building construction according to claim 6, characterized in that: The mounting bracket (1) has a reinforcement structure (12) that can improve stability connected to both sides by bolts. The reinforcement structure (12) includes a tripod (1201) that can improve stability connected to both sides of the mounting bracket (1) by bolts. The bottom of the tripod (1201) is connected to a support base plate (1202) by bolts. The upper surface of the base plate (1202) is inserted with a fixable pin (1203).

8. A climbing formwork system for building construction according to claim 7, characterized in that: The inner wall of the support frame (4) is provided with a positioning threaded hole (6) on one side of the slide groove (2). The inner wall of the threaded hole (6) is threaded with a fixed threaded post (13). One end of the threaded post (13) passing through the threaded hole (6) is threadedly connected to the positioning hole (306).

9. A climbing formwork system for building construction according to claim 8, characterized in that: The upper surface of the support plate (7) is provided with a limiting hole that can limit the position. The inner wall of the limiting hole is fitted with an anti-wear ring (14) that can prevent wear. The inner wall of the anti-wear ring (14) slides in cooperation with the wire rope (10).

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