One-way pulley device

Abstract

This utility model discloses a one-way pulley device, relating to the field of pulley technology. It includes a fixed side plate, a movable side plate on one side of the fixed side plate, a pulley on one side of the fixed side plate, and a shaft fixedly connected to the fixed side plate. A rope passage is formed between the pulley on the fixed side plate and the fixed side plate. When it is necessary to install a rope on the pulley through the rope passage, the movable side plate can be released from its fixed state by unfastening the fixing component, allowing it to rotate. Then, by rotating the movable side plate, the rope is inserted into the rope passage. The movable side plate is then reset and fixed by the fixing component. When it is necessary to lock the rope during use, the position of the rope-gripping teeth can be adjusted by pulling the rope in conjunction with the limiting component, thereby adjusting the rope's state. This allows for convenient switching between bidirectional and unidirectional rope pulling.

Description

Technical Field

[0001] This utility model relates to the field of pulley technology, specifically to a one-way pulley device. Background Technology

[0002] Pulleys are widely used in mountaineering, rappelling, rescue, and outdoor sports, as well as in hoisting heavy objects at heights. However, current pulley rope passages have several problems: 1. Currently, many pulley rope passages are fixed and always closed, making rope insertion and removal extremely inconvenient. 2. Furthermore, the ropes within the existing pulley rope passages are generally bidirectional, meaning that when hoisting objects to heights, both ends of the rope must always apply the same force to pull the object upwards. This makes it impossible to lock the rope during use, significantly impacting safety. Utility Model Content

[0003] The purpose of this invention is to provide a one-way pulley device to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A one-way pulley device includes a fixed side plate, a movable side plate on one side of the fixed side plate, a pulley on one side of the fixed side plate, a shaft fixedly connected to the fixed side plate, the pulley and the shaft rotatably connected, a rope passage is formed between the pulley on one side of the fixed side plate and the fixed side plate, the movable side plate is rotatably connected to the shaft, a fixing block is fixedly connected to the fixed side plate by bolts, a rope-gripping tooth is provided between the fixed side plate and the movable side plate, a pull rope is attached to the rope-gripping tooth, the other end of the pull rope is fixedly connected to a pull block, the rope-gripping tooth is rotatably connected to the fixed side plate by a torsion spring, a limit component is provided on one side of the fixed side plate for adjusting the position of the rope-gripping tooth, a fixing component is connected to the fixed side plate for fixing the position of the movable side plate, and a buckle component is connected to the side of the fixed side plate near the movable side plate for fixing the position of the pull block.

[0005] When the rope needs to be installed in the rope passage on the pulley, the movable side plate can be released from its fixed state by disengaging the fixing component, allowing it to rotate. Then, by rotating the movable side plate, the rope can be inserted into the rope passage. The movable side plate is then reset and secured by the fixing component. When locking the rope during use is required, the position of the rope-gripping teeth can be adjusted by pulling the rope in conjunction with the limiting component, thereby adjusting the rope's state. This allows for easy switching between bidirectional and unidirectional rope pulling. However, because a significant portion of the rope is exposed when adjusting from unidirectional to bidirectional, it is susceptible to being jammed by foreign objects, rendering the device unusable. The addition of a locking component secures the rope and the pull block, preventing this issue from occurring due to excessive rope exposure.

[0006] A further improvement of the present invention is that the limiting component includes a first limiting groove and a second limiting groove. The first limiting groove is arc-shaped, and a limiting block is slidably connected to the rope-gripping teeth. One end of the limiting block is arc-shaped, and a pressure spring is fixedly connected to the end of the limiting block away from the arc. The other end of the pressure spring is fixedly connected to the rope-gripping teeth. A top block is slidably connected to the second limiting groove.

[0007] Using the above technical solution, when it is necessary to adjust the sliding state of the rope, the pull block is pulled. At this time, the pull block will pull the rope-gripping teeth attached to the other end of the cable to rotate. Because the rope-gripping teeth are connected to the fixed side plate by a torsion spring, the rope-gripping teeth will rotate when the rope-gripping teeth are pulled. The arc-shaped surface of the limiting block that is slidably connected to the rope-gripping teeth will contact the first limiting groove, causing the limiting block to be compressed. The pressure spring is in a compressed state, and then the rope-gripping teeth continue to move. When the limiting block moves above the second limiting groove, the limiting block enters the interior of the second limiting groove under the action of the pressure spring, thus locking with the second limiting groove. At this time, the position of the rope-gripping teeth is fixed, and the rope can slide in both directions on the pulley. When it is necessary to adjust to a unidirectional adjustment state, the top block is pressed. The top block will squeeze the limiting block, causing the pressure spring to be compressed. At this time, the limiting block will disengage from the second limiting groove and enter the first limiting groove under the action of the torsion spring. At this time, the rope-gripping teeth will reset, allowing the rope to move in one direction.

[0008] A further improvement of the present invention is that the fixed component includes a movable rod, which is slidably connected to the fixed side plate and a locking block is fixedly connected to one end of the movable rod. A spring is fixedly connected to the side of the locking block near the movable rod, and the other end of the spring is fixedly connected to the fixed side plate. A slot is provided on the movable side plate, and a pull ring is fixedly connected to the end of the movable rod away from the locking block.

[0009] Using the above technical solution, when it is necessary to insert the rope into the rope passage, the pull ring is pulled to move the moving rod, thereby causing the locking block to disengage from the slot opened on the moving side plate. At this time, the elastic spring is in a compressed state, and the moving side plate will disengage from the fixed state so that it can be rotated. When it is necessary to fix it, the operation is reversed.

[0010] A further improvement of the present invention is that the buckle component includes a baffle plate, which is fixedly connected to the fixed side plate. A spring piece is provided on the baffle plate, and a groove is provided on the pull block.

[0011] In this technical solution, when the pull ring is pulled, most of the pull rope is exposed. To prevent it from being jammed by foreign objects, a spring plate is installed on the baffle. When the pull rope is pulled, the groove on the pull block is aligned with the spring plate, and then the pull block is pressed. The spring plate bends under pressure, and when the pull block is fully pressed down, the spring plate returns to its original position, thus locking the pull block. Simultaneously, the spring plate locking the pull block also prevents the pulley from being accidentally touched by the top block during operation, which could damage the pulley mechanism.

[0012] A further improvement of this utility model is that several gripping grooves are provided on the movable side plate.

[0013] The above technical solution includes a gripping groove, which makes it easier to rotate and fix the side plate when needed.

[0014] A further improvement of this utility model is that: a wear-resistant layer is provided on the surface of the end of the limiting block with an arc surface, and the material of the wear-resistant layer is tungsten carbide.

[0015] By adopting the above technical solution, since the limiting block needs to slide frequently between the first limiting groove and the second limiting groove, the wear of the limiting block can be reduced by setting a wear-resistant layer of tungsten carbide material, thereby extending the service life of the limiting block.

[0016] A further improvement of this utility model is that several weight-reducing grooves are provided on the fixed side plate.

[0017] By adopting the above technical solution, the overall weight of the pulley can be effectively reduced by opening a weight-reducing groove on the fixed side plate, thereby reducing the burden on the user.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: 1. This utility model provides a one-way pulley device. When a rope needs to be installed in the rope passage on the pulley, the moving side plate can be released from its fixed state by unfastening the fixing component, allowing the moving side plate to rotate. Then, by rotating the moving side plate, the rope is inserted into the rope passage. The moving side plate is then reset and fixed by the fixing component. When locking the rope during use is required, the position of the rope-gripping teeth can be adjusted by pulling the rope in conjunction with the limiting component, thereby adjusting the rope's state. This allows for convenient switching between bidirectional and unidirectional pulling states. However, because a significant portion of the rope is exposed when adjusting from a unidirectional to a bidirectional state, it is easily jammed by foreign objects during use, rendering the device unusable. The buckle component secures the rope and the pull block, preventing the device from becoming unusable due to excessive rope exposure.

[0019] 2. This utility model provides a one-way pulley device. When the pull ring is pulled, most of the pull rope is exposed. To prevent it from being jammed by foreign objects, a spring plate is provided on the baffle. When the pull rope is pulled, the groove on the pull block is aligned with the spring plate, and then the pull block is pressed. At this time, the spring plate will bend in the center under pressure. When the pull block is fully pressed, the spring plate will return to its original position, thereby locking the pull block. At the same time, the spring plate locking the pull block can also prevent the pulley device from being damaged by accidental contact with the top block during operation.

[0020] 3. This utility model provides a one-way pulley device. Since the limiting block needs to slide frequently between the first limiting groove and the second limiting groove, the wear of the limiting block can be reduced by setting a wear-resistant layer of tungsten carbide material, thereby extending the service life of the limiting block. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a first structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the second structure of the present invention; Figure 3 This is a schematic diagram of the third structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the rope-grabbing teeth of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the pull block of this utility model; Figure 6 This is a schematic diagram of the top block structure of this utility model.

[0023] In the diagram: 1. Fixed side plate; 2. Movable side plate; 3. Pulley; 4. Fixed block; 5. Rope gripping teeth; 6. Pull rope; 7. Pull block; 8. First limiting groove; 9. Second limiting groove; 10. Limiting block; 11. Pressure spring; 12. Top block; 13. Moving rod; 14. Locking block; 15. Elastic spring; 16. Locking groove; 17. Pull ring; 18. Spring piece; 19. Groove; 20. Baffle; 21. Grip groove; 22. Wear-resistant layer; 23. Weight reduction groove. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to embodiments: Example 1 like Figure 1 As shown, this utility model provides a one-way pulley device, including a fixed side plate 1, a movable side plate 2 provided on one side of the fixed side plate 1, a pulley 3 provided on one side of the fixed side plate 1, a shaft fixedly connected to the fixed side plate 1, the pulley 3 rotatably connected to the shaft, a rope passage formed between the pulley 3 and the fixed side plate 1, the movable side plate 2 rotatably connected to the shaft, a fixing block 4 fixedly connected to the fixed side plate 1 by bolts, a rope-gripping tooth 5 provided between the fixed side plate 1 and the movable side plate 2, a pull rope 6 attached to the rope-gripping tooth 5, a pull block 7 fixedly connected to the other end of the pull rope 6, the rope-gripping tooth 5 rotatably connected to the fixed side plate 1 by a torsion spring, a limiting component provided on one side of the fixed side plate 1 for adjusting the position of the rope-gripping tooth 5, a fixing component connected to the fixed side plate 1 for fixing the position of the movable side plate 2, and a buckle component connected to the side of the fixed side plate 1 near the movable side plate 2 for fixing the position of the pull block 7.

[0025] In this embodiment, when it is necessary to install the rope in the rope passage on the pulley 3, the movable side plate 2 can be released from its fixed state by unfastening the fixing component, allowing the movable side plate 2 to rotate. Then, by rotating the movable side plate 2, the rope is inserted into the rope passage. The movable side plate 2 is then reset and fixed by the fixing component. When it is necessary to lock the rope during use, the position of the rope-gripping teeth 5 can be adjusted by pulling the pull rope 6 in conjunction with the limiting component, thereby adjusting the rope's state. This allows the pull rope 6 to easily switch between a bidirectional and a unidirectional pulling state. Simultaneously, because a large portion of the rope is exposed when adjusting from a unidirectional to a bidirectional state, it is easily jammed by foreign objects during use, rendering the device unusable. The buckle component secures the pull rope 6 and the pull block 7, preventing the device from becoming unusable due to excessive rope exposure during use.

[0026] Example 2 like Figure 1 , Figure 4 and Figure 6 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the limiting component includes a first limiting groove 8 and a second limiting groove 9. The first limiting groove 8 is arc-shaped, and a limiting block 10 is slidably connected to the rope-gripping teeth 5. One end of the limiting block 10 is arc-shaped, and a pressure spring 11 is fixedly connected to the end of the limiting block 10 away from the arc. The other end of the pressure spring 11 is fixedly connected to the rope-gripping teeth 5. A top block 12 is slidably connected to the second limiting groove 9.

[0027] In this embodiment, when it is necessary to adjust the sliding state of the rope, the pull block 7 is pulled. At this time, the pull block 7 will pull the rope-gripping tooth 5, which is attached to the other end of the cable, to rotate through the pull rope 6. Because the rope-gripping tooth 5 is rotatably connected to the fixed side plate 1 through a torsion spring, the rope-gripping tooth 5 will rotate when it is pulled. The surface of the limiting block 10, which is slidably connected to the rope-gripping tooth 5, is arc-shaped and contacts the first limiting groove 8, which will compress the limiting block 10. The pressure spring 11 is in a compressed state, and then the rope-gripping tooth 5 continues to move. When the limiting block 10 moves to the second limiting groove 9, the rope-gripping tooth 5 continues to move. When the rope is in the upper position, the limiting block 10 enters the second limiting groove 9 under the action of the pressure spring 11, thus locking with the second limiting groove 9. At this time, the position of the rope gripping tooth 5 is fixed, and the rope can slide in both directions on the pulley 3. When it is necessary to adjust to a one-way adjustment state, press the top block 12. The top block 12 will squeeze the limiting block 10, causing the pressure spring 11 to be in a compressed state. At this time, the limiting block 10 will disengage from the second limiting groove 9 and enter the first limiting groove 8 under the action of the torsion spring. At this time, the rope gripping tooth 5 will reset, allowing the rope to move in one direction.

[0028] Example 3 like Figure 1 and Figure 2 As shown, based on Embodiment 2, this utility model provides a technical solution: Preferably, the fixing component includes a movable rod 13, the movable rod 13 is slidably connected to the fixed side plate 1, and a locking block 14 is fixedly connected to one end of the movable rod 13. A spring spring 15 is fixedly connected to the side of the locking block 14 near the movable rod 13, and the other end of the spring spring 15 is fixedly connected to the fixed side plate 1. A slot 16 is provided on the movable side plate 2, and a pull ring 17 is fixedly connected to the end of the movable rod 13 away from the locking block 14.

[0029] In this embodiment, when it is necessary to insert the rope into the rope passage, the pull ring 17 is pulled to move the moving rod 13, thereby causing the locking block 14 to disengage from the locking groove 16 opened on the moving side plate 2. At this time, the elastic spring 15 is in a compressed state, and the moving side plate 2 will disengage from the fixed state so that it can be rotated. When it is necessary to fix it, the operation can be reversed.

[0030] like Figure 2 and Figure 5As shown, in this embodiment, preferably, the buckle component includes a baffle 20, which is fixedly connected to the fixed side plate 1. The baffle 20 is provided with a spring piece 18, and the pull block 7 is provided with a groove 19.

[0031] When the pull ring 17 is pulled, most of the pull rope 6 will be exposed. To prevent it from being jammed by foreign objects, a spring piece 18 is provided on the baffle 20. When the pull rope 6 is pulled, the groove 19 on the pull block 7 is aligned with the spring piece 18, and then the pull block 7 is pressed. At this time, the spring piece 18 will bend in the center under pressure. When the pull block 7 is fully pressed, the spring piece 18 will reset, thereby locking the pull block 7. At the same time, the spring piece 18 locking the pull block 7 can also prevent the pulley 3 from being accidentally touched by the top block 12 during operation, which would damage the pulley 3 device.

[0032] like Figure 1 As shown, preferably, the movable side plate 2 has several gripping grooves 21.

[0033] The inclusion of a gripping groove 21 makes it easier to rotate the fixed side plate 1 when needed.

[0034] like Figure 4 As shown, preferably, the end surface of the limiting block 10 with the arc surface is provided with a wear-resistant layer 22, and the material of the wear-resistant layer 22 is tungsten carbide.

[0035] Because the limiting block 10 needs to slide frequently between the first limiting groove 8 and the second limiting groove 9, the wear of the limiting block 10 can be reduced by providing a wear-resistant layer 22 made of tungsten carbide, thereby extending the service life of the limiting block 10.

[0036] like Figure 2 As shown, preferably, the fixed side plate 1 has several weight-reducing grooves 23.

[0037] By providing a weight-reducing groove 23 on the fixed side plate 1, the overall weight of the pulley 3 can be effectively reduced, thereby reducing the burden on the user.

[0038] The working principle of this one-way pulley device will be explained in detail below.

[0039] like Figures 1-6As shown, when it is necessary to install the rope in the rope passage on the pulley 3, the movable side plate 2 can be released from its fixed state by unfastening the fixing component, allowing the movable side plate 2 to rotate. Then, by rotating the movable side plate 2, the rope is inserted into the rope passage. The movable side plate 2 is then reset and fixed by the fixing component. When it is necessary to lock the rope during use, the position of the rope gripping teeth 5 can be adjusted by pulling the pull rope 6 in conjunction with the limiting component, thereby adjusting the state of the rope. This allows the pull rope 6 to be easily switched between a bidirectional pulling state and a unidirectional pulling state. At the same time, because a large part of the rope is exposed when adjusting from a unidirectional pulling state to a bidirectional adjustment state, it is easily jammed by foreign objects during use, which can render the device unusable. The pull rope 6 and the pull block 7 can be fixed by the buckle component. When it is necessary to adjust the rope sliding state, pull the pull block 7. At this time, the pull block 7 will pull the rope gripping tooth 5, which is attached to the other end of the rope, to rotate through the pull rope 6. Because the rope gripping tooth 5 is rotatably connected to the fixed side plate 1 through a torsion spring, the rope gripping tooth 5 will rotate when pulled. The surface of the limiting block 10, which is slidably connected to the rope gripping tooth 5, is arc-shaped and contacts the first limiting groove 8, which will compress the limiting block 10. The pressure spring 11 is in a compressed state, and then the rope gripping tooth 5 continues to move. When the limiting block 10 moves above the second limiting groove 9, At this time, the limiting block 10 enters the second limiting groove 9 under the action of the pressure spring 11, thus locking with the second limiting groove 9. At this time, the position of the rope gripping tooth 5 is fixed, and the rope can slide bidirectionally on the pulley 3. When it is necessary to adjust to a unidirectional adjustment state, press the top block 12. The top block 12 will squeeze the limiting block 10, causing the pressure spring 11 to be in a compressed state. At this time, the limiting block 10 will disengage from the second limiting groove 9 and enter the first limiting groove 8 under the action of the torsion spring. At this time, the rope gripping tooth 5 will reset, allowing the rope to move unidirectionally. When it is necessary to insert the rope into the rope passage, pull the pull ring 17 to drive the moving rod 13 to move, thereby causing the locking block 14 to disengage from the locking groove 16 opened on the moving side plate 2. At this time, the elastic spring 15 is in a compressed state, and the moving side plate 2 will be released from the fixed state, allowing it to rotate. When it is necessary to fix it, simply reverse the operation. When the pull ring 17 is pulled, most of the pull rope 6 will be exposed. To prevent it from being jammed by foreign objects, a spring piece 18 is provided on the baffle 20. When the pull rope 6 is pulled, the groove 19 on the pull block 7 is aligned with the spring piece 18, and then the pull block 7 is pressed. At this time, the spring piece 18 will bend in the center under pressure. When the pull block 7 is fully pressed, the spring piece 18 will return to its original position, thereby locking the pull block 7. At the same time, the spring piece 18 locking the pull block 7 can also prevent the pulley 3 from being accidentally touched by the top block 12 during operation, which would damage the pulley 3 device. The gripping groove 21 makes it easier to rotate the fixed side plate 1 when needed.Because the limiting block 10 needs to slide frequently between the first limiting groove 8 and the second limiting groove 9, the wear of the limiting block 10 can be reduced by providing a wear-resistant layer 22 made of tungsten carbide, thereby extending the service life of the limiting block 10. By providing a weight-reducing groove 23 on the fixed side plate 1, the overall weight of the pulley 3 can be effectively reduced, thereby reducing the burden on the user.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A one-way pulley device, comprising a fixed side plate (1); characterized in that: A movable side plate (2) is provided on one side of the fixed side plate (1), and a pulley (3) is provided on one side of the fixed side plate (1). A shaft is fixedly connected to the fixed side plate (1), and the pulley (3) is rotatably connected to the shaft. A rope passage is formed between the pulley (3) on one side of the fixed side plate (1) and the fixed side plate (1). The movable side plate (2) is rotatably connected to the shaft. A fixing block (4) is fixedly connected to the fixed side plate (1) by bolts. A rope-gripping tooth (5) is provided between the fixed side plate (1) and the movable side plate (2). A pull rope (6) is attached to the rope tooth (5), and a pull block (7) is fixedly connected to the other end of the pull rope (6). The rope tooth (5) is rotatably connected to the fixed side plate (1) through a torsion spring. A limit component is provided on one side of the fixed side plate (1). The limit component is used to adjust the position of the rope tooth (5). A fixing component is connected to the fixed side plate (1). The fixing component is used to fix the position of the movable side plate (2). A buckle component is connected to the side of the fixed side plate (1) close to the movable side plate (2). The buckle component is used to fix the position of the pull block (7).

2. The one-way pulley device according to claim 1, characterized in that: The limiting component includes a first limiting groove (8) and a second limiting groove (9). The first limiting groove (8) is arc-shaped. A limiting block (10) is slidably connected to the rope-gripping tooth (5). One end of the limiting block (10) is arc-shaped. A pressure spring (11) is fixedly connected to the end of the limiting block (10) away from the arc. The other end of the pressure spring (11) is fixedly connected to the rope-gripping tooth (5). A top block (12) is slidably connected to the second limiting groove (9).

3. The one-way pulley device according to claim 2, characterized in that: The fixing component includes a movable rod (13), which is slidably connected to the fixed side plate (1) and a locking block (14) is fixedly connected to one end of the movable rod (13). A spring spring (15) is fixedly connected to the side of the locking block (14) near the movable rod (13). The other end of the spring spring (15) is fixedly connected to the fixed side plate (1). A slot (16) is provided on the movable side plate (2). A pull ring (17) is fixedly connected to the end of the movable rod (13) away from the locking block (14).

4. A one-way pulley device according to claim 3, characterized in that: The buckle component includes a baffle (20), which is fixedly connected to the fixed side plate (1). A spring piece (18) is provided on the baffle (20), and a groove (19) is provided on the pull block (7).

5. A one-way pulley device according to claim 4, characterized in that: The movable side plate (2) is provided with several gripping grooves (21).

6. A one-way pulley device according to claim 5, characterized in that: The limiting block (10) has a wear-resistant layer (22) on one end surface with an arc surface, and the wear-resistant layer (22) is made of tungsten carbide.

7. A one-way pulley device according to claim 6, characterized in that: The fixed side plate (1) is provided with several weight-reducing grooves (23).

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