Loosening prevention structure of elevator

Abstract

The utility model provides an anti-loosening structure of an elevator, and belongs to the technical field of elevators. The technical problem that an existing steel wire rope anti-loosening device is prone to shaking, and consequently working efficiency is low is solved. The anti-loosening structure of the elevator comprises a rope wheel and a steel wire rope, a thread groove is formed in the outer circumferential face of the rope wheel, a guide piece is arranged on the outer circumference of the rope wheel in a sleeved mode, a circle of screw wheel is arranged on the inner circumferential face of the guide piece, the screw wheel and the thread groove are in spiral transmission, an installation hole is formed in the guide piece in the radial direction of the screw wheel, and a rolling wheel and a pressing plate are arranged in the installation hole. The roller is rotationally fixed on the pressing plate, the pressing plate is fixed in the mounting hole, and the steel wire rope is located between the roller and the threaded groove. The utility model has the advantages that the steel wire rope can be withdrawn freely when no heavy object is hung, and the clamping stagnation phenomenon is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hoist technology, and specifically refers to a hoist anti-loosening structure. Background Technology

[0002] The hoist completes the transportation process by using a power machine to drive a flexible steel wire rope and the transported goods up and down. One end of the hoist's steel wire rope is wound in a grooved wire storage bin, and the other end is connected to the workpiece. When there is no workpiece or the workpiece is too light, the steel wire rope will not be under gravity. If the hoist continues to operate in this case, the steel wire rope in the wire storage bin will run out of the groove, causing the steel wire rope to become tangled and disordered, and eventually jamming.

[0003] A prior art device for preventing steel cables from loosening in the grooves of rope pulleys discloses a rope presser. This presser includes a pair of rope presser wheel assemblies and a compression spring. The pair of rope presser wheel assemblies are hinged to a pin fixed to a guide rope coil. The pair of rope presser wheel assemblies can swing around the pin. The compression spring is positioned between the pair of rope presser wheel assemblies, applying elastic force to the rope presser wheel assemblies, forcing them to press tightly against the steel cable, preventing the steel cable from slipping out of the grooves on the rope pulleys under any circumstances. However, this structure can cause the rope presser wheel to swing excessively, failing to properly press the steel cable, resulting in the steel cable becoming loose and not properly wound around the rope pulleys. This, in turn, affects the winding and unwinding of the steel cable, reducing the overall working efficiency of the machine. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-loosening structure for hoists. The technical problem solved by this invention is how to better prevent wire rope rebound and improve work efficiency.

[0005] The purpose of this utility model can be achieved through the following technical solution: a hoist anti-loosening structure, including a rope wheel and a wire rope, wherein the outer circumferential surface of the rope wheel has a threaded groove, a guide member is sleeved on the outer circumference of the rope wheel, a helical wheel is provided on the inner circumferential surface of the guide member, the helical wheel and the threaded groove are helically driven, an installation hole is provided on the guide member along the radial direction of the helical wheel, a roller and a pressure plate are provided in the installation hole, the roller is rotated and fixed on the pressure plate, the pressure plate is fixed in the installation hole, and the wire rope is located between the roller and the threaded groove.

[0006] Furthermore, the mounting hole includes a strip-shaped hole and a strip-shaped pin hole that spans and connects to the strip-shaped hole. The roller and the pressure plate are interposed with pins. The roller is located inside the strip-shaped hole, and the pin is located inside the strip-shaped pin hole.

[0007] Furthermore, the pressure plate includes an integrally formed vertical plate and a parallel plate. The vertical plate is embedded in a strip-shaped pin hole, the pin is fixed on the vertical plate, and the parallel plate is fixed to the outer peripheral surface of the guide by fasteners.

[0008] Furthermore, an elastic washer is provided between the parallel plate and the fastener.

[0009] Furthermore, the strip-shaped hole includes a through hole portion and a blind hole portion, the strip-shaped pin hole spans across the through hole portion, the vertical plate has a pin hole one and a pin hole two, the pin hole one is located inside the through hole portion, the pin shaft is fixed to the pin hole one, the pin hole two is located inside the blind hole portion, the guide member is provided with a fixing hole, and a rotating shaft is fixed inside the fixing hole and the pin hole two.

[0010] Furthermore, an adjusting shim is provided on the rotating shaft, and the adjusting shim is located between the vertical plate and the guide member.

[0011] Furthermore, the pin hole is a through hole.

[0012] Furthermore, the guide is provided with a rope-passing hole along the tangent direction of the screw wheel. The inner opening of the rope-passing hole is aligned with one end of the screw wheel, and the axis of the rope-passing hole is perpendicular to and connected to the axis of the mounting hole.

[0013] Compared with the prior art, the technical effects of this utility model are as follows: First, by fixing the roller to the guide member through the pressure plate and setting the roller in the vertical direction of the rope hole, the roller can stably press the wire rope to make it straight, and can retract freely even when there is no heavy object hanging, reducing jamming; Second, the rolling gap between the roller and the wire rope can be adjusted by the elastic washer to prevent the roller from jamming due to uneven wire rope thickness; Third, by setting a rotating shaft, one end of the pressure plate is rotated and fixed to the guide member, and the other end can rotate around the rotating shaft, so that the roller can be installed and replaced without disassembling the pressure plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a perspective view of the utility model.

[0016] Figure 3 This is a cross-sectional view of the present invention.

[0017] Figure 4 This is a new type of explosive. Figure 1 .

[0018] Figure 5 This is a new type of explosive. Figure 2 .

[0019] Drawing number markings: 1. Rope pulley; 101. Threaded groove; 2. Steel wire rope; 3. Guide component; 301. Screw pulley; 302. Mounting hole; 3021. Strip hole; 3021a. Through hole; 3021b. Blind hole; 3022. Strip pin hole; 303. Rope threading hole; 4. Roller; 5. Pressure plate; 501. Parallel plate; 502. Vertical plate; 5021. Pin hole one; 5022. Pin hole two; 6. Fastener; 7. Pin shaft; 8. Elastic washer; 9. Rotating shaft; 10. Adjusting shim. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] according to Figures 1 to 5As shown, a hoist anti-loosening structure includes a rope pulley 1 and a wire rope 2. The outer circumferential surface of the rope pulley 1 has a threaded groove 101, and a guide member 3 is sleeved on the outer circumference of the rope pulley 1. The rope pulley 1 is rotated by the power of a motor. The guide member 3 is inserted into a guide rod, which is fixed to the hoist body. After the rope pulley 1 rotates, the threaded groove 101 on the outer circumferential surface of the rope pulley 1 drives the guide member 3, which has a spiral wheel 301 on its inner circumferential surface, to perform a left-hand helical drive. Due to the cooperation of the helical drive and the guide rod, the guide member 3 performs a translational movement relative to the guide rod. The wire rope 2 inside the guide member 3 can be gradually wound into the threaded groove 101 one by one through the guide member 3, realizing the winding and unwinding of the wire rope 2. In particular, the guide member 3 has a mounting hole 302 arranged radially along the spiral wheel 301. A roller 4 and a pressure plate 5 are arranged in the mounting hole 302. The roller 4 is rotatably fixed on the pressure plate 5, and the pressure plate 5 is fixed in the mounting hole 302. The wire rope 2 is located between the roller 4 and the threaded groove 101. Furthermore, a rope-passing hole 303 is provided on the guide member 3 along the tangent direction of the screw wheel 301. The inner opening of the rope-passing hole 303 is aligned with one end of the screw wheel 301, and the axis of the rope-passing hole 303 is perpendicular to and connected to the axis of the mounting hole 302. By setting a ring of screw wheels 301 on its inner circumference to cooperate with the threaded groove 101, the manufacturing process is simplified and the manufacturing precision is improved. One ring of screw wheels 301 can more smoothly carry the wire rope 2 in a spiral motion within the threaded groove 101. The rope-passing hole 303 is provided on the guide member 3 along the tangent direction of the screw wheel 301. The inner opening of the rope-passing hole 303 is aligned with one end of the screw wheel 301, ensuring that the screw wheel 301 only occupies one ring of the threaded groove 101. The second ring of the threaded groove 101 is the wire rope 2, and there will be no phenomenon of occupying a ring or an empty ring. The stroke of the wire rope 2 is increased on the rope wheel 1 with the same axial length, reducing the waste of the wire rope 2. Under the condition that the stroke of the wire rope 2 is constant. This also reduces the axial length of the rope pulley 1, lightens its weight, and improves the overall efficiency of the machine. Due to the inherent characteristics of the wire rope 2, when there is no heavy object hanging, the wire rope 2 will have a certain tension, causing it to spring back and jam when the rope is retracted. This solution opens a rope-passing hole 303 in the tangential direction of the screw wheel 301, and sets an installation hole 302 on the guide member 3 along the radial direction of the screw wheel 301. The axis of the installation hole 302 and the axis of the rope-passing hole 303 are connected to each other, and a roller 4 is set in the installation hole 302. The cooperation between the roller 4 and the rope-passing hole 303 makes the wire rope 2 straight, ensuring that the wire rope 2 is not affected by its tension when it is retracted, making the wire rope 2 retract more smoothly.

[0022] like Figure 4 , Figure 5As shown, to better install the roller 4 and ensure better cooperation between the roller 4 and the wire rope 2, the mounting hole 302 is configured as a strip-shaped hole 3021 and a strip-shaped pin hole 3022 spanning and connecting the strip-shaped hole 3021. A pin 7 is inserted between the roller 4 and the pressure plate 5. The roller 4 is located within the strip-shaped hole 3021, and the pin 7 is located within the strip-shaped pin hole 3022. Preferably, the pressure plate 5 includes an integrally formed vertical plate 502 and a parallel plate 501. The vertical plate 502 is embedded in the strip-shaped pin hole 3022, and the pin 7 is fixed to the vertical plate 502. The parallel plate 501 is fixed to the outer circumference of the guide member 3 by fasteners 6. An elastic washer 8 is provided between the parallel plate 501 and the fastener 6.

[0023] like Figure 4 As shown, the strip hole 3021 can also be configured to include a through hole portion 3021a and a blind hole portion 3021b. The strip pin hole 3022 spans across the through hole portion 3021a. The vertical plate 502 has a first pin hole 5021 and a second pin hole 5022. The first pin hole 5021 is located inside the through hole portion 3021a, and the pin shaft 7 is fixed to the first pin hole 5021. The second pin hole 5022 is located inside the blind hole portion 3021b. The guide member 3 is provided with a fixing hole, and a rotating shaft 9 is fixed inside the fixing hole and the second pin hole 5022. An adjusting shim 10 is provided on the rotating shaft 9, and the adjusting shim 10 is located between the vertical plate 502 and the guide member 3. The first pin hole 5021 is a round through hole. By setting the rotating shaft 9, one end of the pressure plate 5 is rotated and fixed on the guide member 3, and the other end can rotate around the rotating shaft 9. The roller 4 can be installed and replaced without disassembling the pressure plate 5.

[0024] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A hoist anti-loosening structure, comprising a rope pulley (1) and a wire rope (2), wherein the outer circumferential surface of the rope pulley (1) has a threaded groove (101), and a guide member (3) is sleeved on the outer circumference of the rope pulley (1), characterized in that: A spiral wheel (301) is provided on the inner circumferential surface of the guide member (3). The spiral wheel (301) and the threaded groove (101) are driven by a spiral. A mounting hole (302) is provided on the guide member (3) along the radial direction of the spiral wheel (301). A roller (4) and a pressure plate (5) are provided in the mounting hole (302). The roller (4) is rotated and fixed on the pressure plate (5). The pressure plate (5) is fixed in the mounting hole (302). The wire rope (2) is located between the roller (4) and the threaded groove (101).

2. The anti-loosening structure for a hoist according to claim 1, characterized in that: The mounting hole (302) includes a strip hole (3021) and a strip pin hole (3022) that spans and connects to the strip hole (3021). The roller (4) and the pressure plate (5) are interposed with pins (7). The roller (4) is located in the strip hole (3021), and the pin (7) is located in the strip pin hole (3022).

3. The anti-loosening structure for a hoist according to claim 2, characterized in that: The pressure plate (5) includes an integrally formed parallel plate (501) and a vertical plate (502). The vertical plate (502) is embedded in a strip-shaped pin hole (3022). The pin (7) is fixed on the vertical plate (502). The parallel plate (501) is fixed to the outer peripheral surface of the guide member (3) by fasteners (6).

4. The anti-loosening structure for a hoist according to claim 3, characterized in that: An elastic washer (8) is provided between the parallel plate (501) and the fastener (6).

5. The anti-loosening structure for a hoist according to claim 3, characterized in that: The strip-shaped hole (3021) includes a through hole portion (3021a) and a blind hole portion (3021b). The strip-shaped pin hole (3022) spans across the through hole portion (3021a). The vertical plate (502) has a first pin hole (5021) and a second pin hole (5022). The first pin hole (5021) is located inside the through hole portion (3021a). The pin shaft (7) is fixed to the first pin hole (5021). The second pin hole (5022) is located inside the blind hole portion (3021b). The guide member (3) is provided with a fixing hole. A rotating shaft (9) is fixed inside the fixing hole and the second pin hole (5022).

6. The anti-loosening structure for a hoist according to claim 5, characterized in that: An adjusting shim (10) is provided on the rotating shaft (9), and the adjusting shim (10) is located between the vertical plate (502) and the guide (3).

7. The anti-loosening structure for a hoist according to claim 5, characterized in that: The pin hole 1 (5021) is a through hole.

8. A hoist anti-loosening structure according to any one of claims 1 to 7, characterized in that: The guide member (3) is provided with a rope hole (303) along the tangent direction of the screw wheel (301). The inner opening of the rope hole (303) is aligned with one end of the screw wheel (301). The axis of the rope hole (303) is perpendicular to and connected to the axis of the mounting hole (302).

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