CN214114681U - Folding lifting machine for construction operation - Google Patents

Abstract

The utility model belongs to the technical field of the operation platform, especially, relate to a folding lifting machine for construction operation. The utility model is characterized in that the operation folding platform is placed on two groups of lifting supporting leg assemblies, and the height of the operation folding platform is adjusted through the lifting supporting leg assemblies; the pulley assembly is connected on the operation folding platform, and the speed reduction non return assembly is connected on promoting the supporting leg subassembly, and the rope twines between the pulley assembly, and the other end of rope is connected in the speed reduction non return assembly. The utility model discloses a promote supporting leg subassembly and support and remove, maintenance folding platform realizes conveniently dismantling and folding, and the non return subassembly that slows down realizes that this platform promotes article speed reduction and non return, has still realized promoting heavy article and is difficult for falling back in the maintenance process, and the operation platform transportation is convenient, saves space, the beneficial effect of being convenient for fold and dismantle.

Description

Folding lifting machine for construction operation

Technical Field

The utility model belongs to the technical field of the operation platform, especially, relate to a folding lifting machine for construction operation.

Background

The operation platform is widely applied to various fields as a tool for using and operating or supporting a human body at present, and the maintenance platform which is common in the field of indoor buildings at present has higher requirements on convenient operation and portability in use. With the professional nature of operating personnel, the current operation platform mainly adopts fixed unadjustable and unable structure of promoting article, and these platforms are fixed bearing structure for the most part. The operation platform with the structure has the defects of inconvenient movement and transportation, disassembly and folding, object lifting and the like.

Disclosure of Invention

To the weak point that exists among the above-mentioned prior art, the utility model provides a folding lifting machine for construction operation. Its purpose is in order to realize preventing effectively that to promote heavy article and fall back, convenient dismantlement and folding make maintenance platform promote article and do not fall back with the convenient utility model purpose of folding transportation.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is:

a folding elevator for construction operation comprises an operation folding platform, an elevating support leg assembly, a pulley assembly, a deceleration check assembly and a rope; the operation folding platform is arranged on the lifting supporting leg assembly, the pulley assembly is connected to the operation folding platform, the speed reduction check assembly is connected to the lifting supporting leg assembly, the rope is wound between the pulley assemblies, one end of the rope is fixedly connected into the speed reduction check assembly, and the other end of the rope is connected with a material or a workpiece.

The work folding platform includes: the square tube type connecting device comprises a square tube support, a fixed shaft, a connecting rod, a fixed nut and a first rotating shaft; the two groups of square tube brackets are connected in parallel and are arranged on the two groups of lifting support leg assemblies; the middle of each of the two square tube brackets is connected with a first rotating shaft, the lower parts of the square tube brackets are connected with fixed shafts, and the fixed shafts are inserted into the first square tubes; the lower part of the square tube support is also connected with two groups of connecting rods, and the other ends of the connecting rods are connected with the first square tube.

The square tube support is of a grid structure and is connected with a main body support of the square tube support through a plurality of square tubes, and the square tubes are welded in an array mode to form a net shape.

The first rotating shaft is connected with the rotating shaft pressing plate through a rotating shaft penetrating through a hole of the rotating shaft connecting plate, and the two rotating shaft connecting plates are respectively connected to the two square tube supports.

The lifting support leg assemblies are provided with two groups, and each lifting support leg assembly comprises a first square tube, a shaft support plate, a second square tube, a trundle, a plugging bolt and a nut; the shaft supporting plates are connected to the first square tubes, and one shaft supporting plate is arranged at the corresponding position of each of the two first square tubes; the upper end of the second square tube is inserted into the first square tube, through holes are formed in the first square tube and the second square tube at equal intervals, and a plug bolt is inserted into the corresponding through holes in the first square tube and the second square tube and connected with a nut to fixedly connect the first square tube and the second square tube; the lower end of the second square tube is connected with a caster.

The interior of the first square tube is of a hollow structure, the first square tube is a 40 square tube, and the 40 square tube is a square tube with the size of 40x40 mm; the second square tube is a 30 square tube, and the 30 square tube is a square tube with the size of 30x30 mm.

The axle backup pad is L type panel, and one end welds on first square tube, and the other end forms recess form screens with first square tube.

The shaft on the connecting rod is inserted into the corresponding square through holes at the two ends of the square through bracket; the fixing nut is vertically welded with the connecting rod and is placed in a groove of a shaft supporting plate on the lifting supporting leg assembly.

The sheave assembly includes: the pulley fixing plate, the pulley fixing shaft and the pulley are arranged on the pulley fixing plate; the pulley is connected to the pulley fixing plate through a pulley fixing shaft, the pulley fixing shaft is connected to the pulley fixing plate, and the pulley fixing plate is connected to the first square tube; a rope is wound on the pulley, and the other end of the rope is connected to the deceleration non-return assembly; the shaft end of the pulley fixing shaft penetrates through the bearing, the bearing is arranged in the V-shaped wheel body, and the gasket is locked by a screw and tightly presses the inner ring of the bearing with the shaft end of the pulley fixing shaft.

The speed reduction non-return assembly comprises a shaft fixing plate, a material receiving non-return disc, a non-return block, a large gear, a second rotating shaft, a small gear and a rotating handle; one side of the shaft fixing plate is connected to the first square tube, the material receiving non-return disc is connected with the shaft fixing plate, and the non-return block is connected with the shaft fixing plate and used for clamping the material receiving non-return disc to prevent ropes; the large gear is connected to the material receiving non-return disc and connected with the material receiving non-return disc through a key groove at the center of the material receiving non-return disc through the shaft end of the large gear; the large gear is in meshed transmission connection with the small gear, the rotating handle is connected to one end of a second rotating shaft on the small gear, and the rotating handle drives the material receiving non-return disc to receive and release the rope; the pinion is sleeved on the second rotating shaft, and the other end of the second rotating shaft is connected to the shaft fixing plate.

The utility model has the following beneficial effects and advantages:

the utility model provides a folding lifting machine for building operation supports through promoting the supporting leg subassembly and removes, and maintenance folding platform realizes conveniently dismantling and folding, and the non return subassembly that slows down realizes that this platform promotes article speed reduction and non return, has effectually solved and has promoted heavy article and easily fall back in the maintenance process, and the platform is difficult for the transportation, and the inconvenient folding problem with the dismantlement of occupation space makes maintenance platform promote article and does not fall back and folding transportation facility.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the maintenance folding platform of the present invention;

FIG. 3 is a schematic structural view of the lifting support leg assembly of the present invention;

fig. 4 is a schematic structural view of the pulley assembly of the present invention;

fig. 5 is a schematic structural view of the deceleration non-return assembly of the present invention;

fig. 6 is a schematic structural diagram of a first square tube in the present invention;

FIG. 7 is a side view of FIG. 6;

fig. 8 is a schematic structural view of the middle shaft support plate of the present invention;

FIG. 9 is a side view of FIG. 8;

FIG. 10 is a schematic structural view of a connecting rod of the present invention;

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a schematic view of the upper end of the connecting rod of the present invention;

fig. 13 is a schematic view of a V-wheel assembly of the present invention;

FIG. 14 is a sectional view taken along line A-A of FIG. 13;

FIG. 15 is a flow chart of the present invention;

FIG. 16 is an enlarged view of the first shaft of FIG. 2 from the direction B-B;

FIG. 17 is a schematic structural view of the first rotating shaft;

FIG. 18 is a top view of FIG. 17;

fig. 19 is a sectional view taken along line C-C of fig. 18.

In the figure:

work folding platform 1, promote supporting leg subassembly 2, loose pulley assembly 3, speed reduction non return subassembly 4, rope 5, square tube support 6, fixed axle 61, connecting rod 7, fixation nut 8, first pivot 9, pivot 91, pivot clamp plate 92, first square tube 10, axle supporting plate 101, second square tube 11, truckle 12, stopper bolt 13, nut 14, pulley fixed plate 15, pulley fixed axle 16, pulley 17, V wheel body 171, bearing 172, gasket 173, axle fixed plate 18, receive material non return dish 19, non return piece 20, gear wheel 21, second pivot 22, pinion 23, rotation handle 24, axle 25, pivot connecting plate 601, axle supporting plate 101.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The technical solutions of some embodiments of the present invention are described below with reference to fig. 1 to 5.

Example 1

The utility model relates to a folding lifting machine for building operation, as shown in fig. 1, fig. 1 is the utility model discloses a schematic structure diagram.

The utility model discloses folding lifting machine for building operation includes: the operation folding platform comprises an operation folding platform 1, a lifting supporting leg assembly 2, a pulley assembly 3, a speed reduction non-return assembly 4 and a rope 5. Wherein, operation folding platform 1 places on two sets of promotion supporting leg subassembly 2, promotion supporting leg subassembly 2 can support operation folding platform 1 and adjust the height, loose pulley assembly 3 fixed connection is on operation folding platform 1, 4 fixed connection of speed reduction non return subassembly are on promoting supporting leg subassembly 2, rope 5 twines between loose pulley assembly 3, the one end fixed connection of rope 5 is in speed reduction non return subassembly 4, the material or the work piece that need be promoted are connected to the other end of rope 5.

As shown in fig. 2, fig. 2 is a schematic structural diagram of the maintenance folding platform of the present invention. The utility model discloses in operation folding platform 1 specifically include: square tube support 6, fixed axle 61, connecting rod 7, fixation nut 8, first pivot 9. Wherein, fixed axle 61 fixed connection adopts welded fastening to connect on square tube support 6.

Two sets of square tube supports 6 parallel connection, the intermediate junction has first pivot 9, and the lower part four corners of square tube support 6 is fixedly connected with fixed axle 61 respectively. The lower part of the square tube bracket 6 is supported by two groups of connecting rods 7, and the other ends of the connecting rods 7 are connected with a first square tube 10.

The two sets of square tube supports 6 are arranged on the two sets of lifting support leg assemblies 2 in parallel, the square tube supports 6 are in a grid structure, a plurality of square tubes are connected with the main body supports of the square tube supports 6 through welding, and the square tubes are welded in an array mode to form a net shape.

As shown in fig. 3, fig. 3 is a schematic structural diagram of the lifting support leg assembly of the present invention. Promote supporting leg subassembly 2 and include first square tube 10, axle supporting plate 101, second square tube 11, truckle 12, stopper and beat bolt 13 and nut 14. The shaft support plates 101 are fixedly connected to the first square tubes 10 and fixedly connected by welding, and the shaft support plates 101 are arranged at corresponding positions on the two first square tubes 10. The upper end of the second square tube 11 is inserted into the first square tube 10, through holes are arranged on the first square tube 10 and the second square tube 11 at equal intervals, and the plugging bolts 13 are inserted into the corresponding through holes on the first square tube 10 and the second square tube 11.

The nut 14 is connected with the plugging bolt 13 and is used for fixing the first square tube 10 and the second square tube 11. The plugging bolt 13 is used for adjusting the fixing positions of the first square tube 10 and the second square tube 11 so as to change the overall height of the lifting support leg assembly 2.

The caster 12 is connected with the lower end of the second square tube 11 and is used for supporting and moving.

As shown in fig. 6 and 7, fig. 6 is a schematic structural diagram of a first square tube in the present invention, and fig. 7 is a side view of fig. 6. The first square tube 10 is a 40 square tube, and the 40 square tube refers to a square tube with a size of 40x40 mm. The second square tube 11 is a 30 square tube, the 30 square tube refers to a square tube with the size of 30x30mm, the specific structure is similar to that of the 40 square tube, and only the size is different.

The two groups of lifting support leg assemblies 2 are characterized in that four fixing shafts 61 are inserted into the top end of the first square tube 10 to play a role in supporting and fixing, and the connecting rod 7 plays a role in triangular support. The first square tube 10 has a hollow structure inside and can be inserted into the fixing shaft 61.

As shown in fig. 8 and 9, fig. 8 is a schematic structural view of the bottom bracket support plate of the present invention, and fig. 9 is a side view of fig. 8. The axle backup pad 101 is used for supporting connecting rod 7, and axle backup pad 101 is L type panel, and one end welds on first square tube 10, and the other end forms the flute profile with first square tube 10 and is used for the screens.

Wherein, the first rotating shaft 9 is placed in the holes of the two square tube brackets 6. The first rotating shaft 9 is a general structure similar to a bolt hinge, please refer to the combined bolt hinge.

As shown in fig. 16-19, fig. 16 is an enlarged structural view of the first rotating shaft in fig. 2 along the direction B-B, fig. 17 is a structural view of the first rotating shaft, fig. 18 is a top view of fig. 17, and fig. 19 is a sectional view of fig. 18 along the direction C-C. Wherein the first rotation shaft 9 comprises: a rotating shaft 91, a rotating shaft pressing plate 92 and a rotating shaft connecting plate 601. Specifically, the rotating shaft 91 penetrates through a hole of a rotating shaft connecting plate 601 to be connected with a rotating shaft pressing plate 92 through a screw pair, and the two rotating shaft connecting plates 601 are respectively fixed on the two square tube brackets 6 and connected in a welding mode.

As shown in fig. 10-12, fig. 10 is a schematic structural view of the middle connecting rod of the present invention, fig. 11 is a front view of fig. 10, and fig. 12 is a schematic structural view of the shaft at the upper end of the middle connecting rod of the present invention. Wherein, the connecting rod 7 mainly plays a role in supporting and fixing the two square tube brackets 6 to prevent rotation. Wherein, the upper part of the shaft 25 at the upper end of the connecting rod 7 is inserted into the corresponding square through holes at the two ends of the square through bracket 6. The fixing nut 8 is vertically connected with the connecting rod 7 in a welding mode, and the fixing nut 8 is placed in a groove of a shaft supporting plate 101 on the lifting supporting leg assembly 2.

As shown in fig. 4, fig. 4 is a schematic structural diagram of the pulley assembly of the present invention. The utility model discloses in loose pulley assembly 3 includes: a pulley fixing plate 15, a pulley fixing shaft 16, and a pulley 17. The pulley 17 is connected to the pulley fixing plate 15 through a pulley fixing shaft 16, the pulley fixing shaft 16 is fixedly connected to the pulley fixing plate 15, and the pulley fixing plate 15 is fixedly connected to the first square tube 10 on the side face of the square tube support 6 through bolts or fixedly connected through welding.

As shown in fig. 13 and 14, fig. 13 is a schematic view of a V-wheel assembly of the present invention; fig. 14 is a sectional view taken along line a-a of fig. 13. The step on the pulley fixing shaft 16 is connected in a manner of clamping the bearing inner ring inside the pulley 17, and other rotating parts are connected in the manner.

Also included in pulley assembly 3 is a subassembly of a V-wheel assembly that includes pulley fixed shaft 16, V-wheel body 171, bearing 172, and washer 173. Wherein, the shaft end of the pulley fixed shaft 16 passes through the bearing 172, the bearing 172 is arranged inside the V-wheel body 171, and the gasket 173 is locked with the shaft end of the pulley fixed shaft 16 through screws to press the inner ring of the bearing 172.

The pulleys 17 may be provided with three groups, and are uniformly distributed on the pulley fixing plate 15. When the material collecting non-return device is used specifically, one end of the rope 5 is wound on the three groups of pulleys 17 and is extended out, and the other end of the rope 5 is fixedly connected to the speed reducing non-return assembly 4 and is fixed between the large gear 21 and the material collecting non-return disc 19, namely, the inner side shaft end of the large gear 21.

As shown in fig. 5, fig. 5 is a schematic structural view of the deceleration check assembly of the present invention. Speed reduction non return subassembly 4's effect is used for receiving and releasing rope 5, speed reduction non return subassembly 4 includes axle fixed plate 18, receives material non return dish 19, non return piece 20, gear wheel 21, second pivot 22, pinion 23 and rotatory handle 24. The side surface of the shaft fixing plate 18 is welded to the first square tube 10.

The material receiving check disc 19 is connected with the shaft fixing plate 18 and is connected in a bolt mode.

The check block 20 is connected to the shaft fixing plate 18 in a bolt manner. The check block 20 is used for blocking the receiving check disc 19 to prevent the rope 5 from rotating. When the material receiving check disc 19 is in contact with the check block 20, the clamping is realized when the distance from the contact point to the rotation center of the material receiving check disc 19 and the distance from the contact point to the rotation center of the check block 20 are greater than the distance from the rotation center of the material receiving check disc 19 to the rotation center of the check block 20, so that the purpose of clamping the material receiving check disc 19 is realized.

The big gear 21 is fixedly connected to the material receiving check disc 19 and connected with the material receiving check disc 19 through a key groove at the center of the material receiving check disc 19 through the shaft end of the big gear 21.

The bull gear 21 and the pinion 23 are in meshing transmission, the rotating handle 24 is fixedly connected to one end of the second rotating shaft 22 on the pinion 23, and the rotating handle 24 is manually rotated, so that the material receiving non-return disc 19 is driven to receive and release the rope.

The pinion 23 is sleeved on the second rotating shaft 22, and the other end of the second rotating shaft 22 is connected to the shaft fixing plate 18 by bolts or other general connection modes.

Example 2

This embodiment provides a folding lifting machine for building operation, as shown in fig. 15, fig. 15 is the utility model discloses a work flow chart. When specifically implementing, the utility model relates to a building operation is with folding lifting machine's concrete work flow includes following step:

step 1, preparing an operation folding platform 1;

step 2, the operation folding platform 1 is placed on the lifting support leg assembly 2;

step 3, connecting a lower fixing shaft 61 of the square tube bracket 6 with the first square tube 10;

step 4, placing the fixing nut 8 in a groove of a shaft support plate 101 on the lifting support leg assembly 2;

step 5, adjusting the height of the lifting support leg assembly;

step 6, the rope 5 is placed in the V-shaped wheel and fixed between the large gear 21 and the material receiving non-return disc 19;

step 7, connecting the material or the workpiece on the rope 5;

and 8, rotating the rotating handle 24 to lift materials or work.

In the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the indicated position or positional relationship is based on the position or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or unit must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A folding lifting machine for construction operation is characterized in that: comprises an operation folding platform (1), a lifting supporting leg assembly (2), a pulley assembly (3), a deceleration non-return assembly (4) and a rope (5); wherein, on lifting support leg subassembly (2) was arranged in to operation folding platform (1), loose pulley assembly (3) were connected on operation folding platform (1), and speed reduction non return subassembly (4) are connected on lifting support leg subassembly (2), and rope (5) twine between loose pulley assembly (3), and the one end fixed connection of rope (5) is in speed reduction non return subassembly (4), and material or work piece are connected to the other end of rope (5).

2. The folding hoist for construction work as claimed in claim 1, wherein: the work folding platform (1) comprises: the device comprises a square tube support (6), a fixed shaft (61), a connecting rod (7), a fixed nut (8) and a first rotating shaft (9); wherein, the two groups of square tube brackets (6) are connected in parallel and arranged on the two groups of lifting supporting leg assemblies (2); a first rotating shaft (9) is connected between the two sets of square tube brackets (6), the lower parts of the square tube brackets (6) are connected with a fixed shaft (61), and the fixed shaft (61) is inserted into the first square tube (10); the lower part of the square tube bracket (6) is also connected with two groups of connecting rods (7), and the other ends of the connecting rods (7) are connected with the first square tube (10).

3. The folding hoist for construction work as claimed in claim 2, wherein: the square tube support (6) is of a grid structure and is connected with a main body support of the square tube support (6) through a plurality of square tubes, and the square tubes are welded in an array mode to form a net shape.

4. The folding hoist for construction work as claimed in claim 2, wherein: the first rotating shaft (9) is formed by connecting a rotating shaft (91) with a rotating shaft pressing plate (92) through a hole of a rotating shaft connecting plate (601), and the two rotating shaft connecting plates (601) are respectively connected to the two square tube supports (6).

5. The folding hoist for construction work as claimed in claim 1, wherein: the lifting support leg assemblies (2) are provided with two groups, and each lifting support leg assembly (2) comprises a first square tube (10), a shaft support plate (101), a second square tube (11), a caster (12), a plugging bolt (13) and a nut (14); the shaft supporting plates (101) are connected to the first square tubes (10), and one shaft supporting plate (101) is arranged at the corresponding position on each of the two first square tubes (10); the upper end of the second square tube (11) is inserted into the first square tube (10), through holes are formed in the first square tube (10) and the second square tube (11) at equal intervals, a stop bolt (13) is inserted into the corresponding through holes in the first square tube (10) and the second square tube (11) and is connected with a nut (14), and the first square tube (10) and the second square tube (11) are fixedly connected; the lower end of the second square tube (11) is connected with a caster (12).

6. The folding hoist for construction work as claimed in claim 5, wherein: the interior of the first square tube (10) is of a hollow structure, the first square tube (10) is a 40 square tube, and the 40 square tube is a square tube with the size of 40x40 mm; the second square tube (11) is a 30 square tube, and the 30 square tube is a square tube with the size of 30x30 mm.

7. The folding hoist for construction work as claimed in claim 5, wherein: the shaft supporting plate (101) is an L-shaped plate, one end of the shaft supporting plate is welded on the first square tube (10), and the other end of the shaft supporting plate and the first square tube (10) form a groove-shaped clamping position.

8. The folding hoist for construction work as claimed in claim 2, wherein: the shaft (25) on the connecting rod (7) is inserted into the corresponding square through holes at the two ends of the square through bracket (6); the fixing nut (8) is vertically welded with the connecting rod (7), and the fixing nut (8) is placed in a groove of a shaft supporting plate (101) on the lifting supporting leg assembly (2).

9. The folding hoist for construction work as claimed in claim 1, wherein: the sheave assembly (3) comprises: a pulley fixing plate (15), a pulley fixing shaft (16) and a pulley (17); the pulley (17) is connected to the pulley fixing plate (15) through a pulley fixing shaft (16), the pulley fixing shaft (16) is connected to the pulley fixing plate (15), and the pulley fixing plate (15) is connected to the first square tube (10); a rope (5) is wound on the pulley (17), and the other end of the rope (5) is connected to the deceleration non-return assembly (4); the shaft end of the pulley fixing shaft (16) penetrates through the bearing (172), the bearing (172) is arranged in the V-shaped wheel body (171), and the gasket (173) is locked with the shaft end of the pulley fixing shaft (16) through screws to press the inner ring of the bearing (172).

10. The folding hoist for construction work as claimed in claim 1, wherein: the speed reduction non-return assembly (4) comprises a shaft fixing plate (18), a material receiving non-return disc (19), a non-return block (20), a large gear (21), a second rotating shaft (22), a small gear (23) and a rotating handle (24); one side of the shaft fixing plate (18) is connected to the first square tube (10), the material receiving check disc (19) is connected with the shaft fixing plate (18), and the check block (20) is connected with the shaft fixing plate (18) and used for clamping the material receiving check disc (19) to prevent the rope (5); the large gear (21) is connected to the material receiving non-return disc (19) and penetrates through a central key groove of the material receiving non-return disc (19) through the shaft end of the large gear (21) to be connected; the large gear (21) is in meshing transmission connection with the small gear (23), the rotating handle (24) is connected to one end of the second rotating shaft (22) on the small gear (23), and the rotating handle (24) drives the material receiving non-return disc (19) to receive and release the rope; the pinion (23) is sleeved on the second rotating shaft (22), and the other end of the second rotating shaft (22) is connected to the shaft fixing plate (18).

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