Composite pulley device
By introducing slides, guide wheel sets and composite pins into the pulley device, combining plate chains and opening and closing mechanisms, the pulley shaking and friction problems in a narrow space are solved, and stable and labor-saving pulley movement and power stroke double are achieved. In the working conditions of smooth running of the spreader.
Patent Information
- Application Number
- CN202421171202.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When conventional pulleys are used in narrow spaces, they cause large shaking in the horizontal direction of the spreader and the object they are loaded, and it is difficult to achieve stable labor-saving movement, especially when the running of the spreader is required.
A composite pulley device is designed, including a pulley assembly body, slide, guide wheel group, composite guide wheel and plate chain. Through the arrangement of guide wheel group and composite pin shaft, stable rotation and limit sliding of the pulley are achieved, and friction resistance is reduced. , and the connection between the plate chain and the opening and closing mechanism is achieved by achieving the "reduction" or "speed growth" function.
The device realizes stable and labor-saving movement of the pulley set in a narrow space, reduces friction resistance and slide wear, can double the stroke of the power unit, reduce production costs, and ensures the smooth operation of the spreader.
Smart Images
Figure CN222293483U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pulleys, in particular to a composite pulley device. Background Art
[0002] Pulleys are widely used in the field of mechanical equipment. They are auxiliary devices for lifting objects. They form a wheel train through pulleys and play a labor-saving role in combination.
[0003] In actual use, conventional pulleys are usually open structures, and ropes are usually fixed on the upper part of the pulley. The pulley is free in the horizontal direction and has no stable motion trajectory. When running, it will cause the sling fixed under the pulley and the carried object to shake greatly in the horizontal direction. It is not suitable for working conditions that require the sling to run smoothly. Utility Model Content
[0004] The utility model aims to provide a composite pulley device, which solves the problem that a device can stably and labor-savingly move a pulley block in a narrow space and has the function of "decelerating" or "increasing speed".
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A composite pulley device comprises a pulley block body, a slideway, a pulley device, a connecting pin, a guide wheel block A, a guide wheel block B, a pulley, a composite guide wheel, a composite pin and a plate chain; a pulley device is arranged inside the pulley block body; a slideway is arranged on the inner wall of the pulley block body; the pulley device is slidably arranged on the slideway; a connecting pin is arranged at the bottom of the pulley device; the guide wheel block A and the guide wheel block B are respectively arranged at the upper and lower ends of the pulley device; a pulley is arranged in the middle of the pulley device; a plate chain is arranged in connection with the pulley; and the other end of the plate chain is connected to an opening and closing mechanism.
[0007] Furthermore, the other end of the connecting pin is connected to a power device.
[0008] Furthermore, the guide wheel group A and the guide wheel group B have the same structural setting; the guide wheel group A has a symmetrical structural setting; and the two guide wheels on the guide wheel group A are in contact with the slideway.
[0009] Furthermore, composite guide wheels are respectively arranged at both ends of the pulley; the composite guide wheels are connected and fixed to the front and rear sides of the pulley device through composite pin shafts.
[0010] Furthermore, the guide wheels of the guide wheel group A and the guide wheel group B are arranged on the left and right sides of the pulley device.
[0011] Furthermore, one end of the composite pin is provided with a shaft shoulder, and the other end is provided with an annular groove.
[0012] Compared with the prior art, the utility model can achieve one of the following beneficial effects:
[0013] 1. It includes a pulley block body, a slideway, a pulley device, a connecting pin, a guide wheel group A, a guide wheel group B, a pulley, a composite guide wheel, a composite pin and a plate chain; a pulley device is arranged inside the pulley block body; a slideway is arranged on the inner wall of the pulley block body; the pulley device is slidably arranged on the slideway; a connecting pin is arranged at the bottom of the pulley device; the upper and lower ends of the pulley device are respectively provided with a guide wheel group A and a guide wheel group B; a pulley is arranged in the middle of the pulley device; a plate chain is arranged for the pulley connection; the other end of the plate chain is connected to the opening and closing mechanism, which can realize the guide wheel with two directions, integrated in a narrow slideway and used in a limited space, and the pulley will not produce a large shake when running, and can effectively reduce friction resistance, reduce the wear of the slideway and the pulley seat, and also has the function of "doubling the stroke" of the power device, using a short-stroke power device to achieve the function of the stroke of the carried object twice the stroke of the power device. This can reduce the production cost of the power device.
[0014] 2. The other end of the connecting pin is connected to the power device, so that the composite pulley device can be driven by connecting the power device through the connecting pin.
[0015] 3. The guide wheel group A and the guide wheel group B have the same structural setting; the guide wheel group A has a symmetrical structural setting; the two guide wheels on the guide wheel group A fit with the slideway, and can achieve limited sliding on the slideway by setting two guide wheel groups, thereby achieving stable sliding and saving effort.
[0016] 4. Composite guide wheels are respectively provided at both ends of the pulley; the composite guide wheels are fixed to the front and rear sides of the pulley device through a composite pin shaft, and the pulley can be limited in rotation through the composite guide wheels to ensure the stable rotation of the pulley and movement with the pulley device.
[0017] 5. The guide wheels of the guide wheel group A and the guide wheel group B are arranged on the left and right sides of the pulley device, so that the pulley device can be limitedly slid in four directions of front, back, left and right in the slideway through the arranged guide wheels of the guide wheel group A and the guide wheel group B.
[0018] 6. The composite pin shaft has a shoulder at one end and a ring groove at the other end, so that the composite pin shaft can ensure the stability of the pulley operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model.
[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0022] Example 1
[0023] A composite pulley device, comprising a pulley block body 1, a slideway 2, a pulley device 3, a connecting pin 4, a guide wheel group A5, a guide wheel group B6, a pulley 7, a composite guide wheel 8, a composite pin 9 and a leaf chain 10; the pulley block body 1 is provided with a pulley device 3; a slideway 2 is provided on the inner wall of the pulley block body 1; the pulley device 3 is slidably arranged on the slideway 2; a connecting pin 4 is provided at the bottom of the pulley device 3; the guide wheel group A5 and the guide wheel group B6 are provided at the upper and lower ends of the pulley device 3 respectively; the pulley device 3 A pulley 7 is provided in the middle; a leaf chain 10 is connected to the pulley 7; the other end of the leaf chain 10 is connected to the opening and closing mechanism 11, the power device 11 is connected to the composite pulley device using the connecting pin 2, the leaf chain 12 is wound around the pulley 4, one end of the leaf chain 12 is fixed on the slideway 1, and the other end is connected to the opening and closing mechanism 13, the opening and closing mechanism 13 is provided with a guide device and is placed in the slideway 1, and the object 14 carried is placed on the opening and closing mechanism 13. During operation: the power device 11 applies an upward force F, which is transmitted to the composite pulley device through the connecting pin 2, and moves with the pulley 4, making the pulley 4 a "moving pulley", and the leaf chain 12 wound around the pulley 4 moves the opening and closing mechanism 13 and the object 14 carried upward; on the contrary, the power device 11 cancels the upward force F, the opening and closing mechanism 13 descends due to gravity, and the composite pulley device and the actuator of the power device are moved downward together. According to the "moving pulley" theorem: the distance moved by the pulling force is twice the distance the hook weight rises. Here, the "moving pulley" theorem is used in reverse: the object carried is the "pulling force" of the "moving pulley" theorem, and the power device 11 that applies the force F is the "hook weight" of the "moving pulley" theorem, so the object's moving distance is twice the running distance of the power device 11; similarly, the object's moving speed is twice the running speed of the power device 11. Moreover, the composite pulley device and the opening and closing mechanism 13 only run in the slide 1, and the movement trajectory is stable. The opening and closing mechanism 13 and the carried object 14 can be lifted and lowered smoothly without large shaking.
[0024] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.
Claims
1. A composite pulley device, characterized in that: The invention comprises a pulley block body (1), a slideway (2), a pulley device (3), a connecting pin shaft (4), a guide wheel group A (5), a guide wheel group B (6), a pulley (7), a composite guide wheel (8), a composite pin shaft (9) and a plate chain (10); the pulley block body (1) is provided with a pulley device (3); a slideway (2) is provided on the inner wall of the pulley block body (1); the pulley device (3) is slidably arranged on the slideway (2); a connecting pin shaft (4) is provided at the bottom of the pulley device (3); a guide wheel group A (5) and a guide wheel group B (6) are respectively provided at the upper and lower ends of the pulley device (3); a pulley (7) is provided in the middle of the pulley device (3); a plate chain (10) is provided in connection with the pulley (7); and the other end of the plate chain (10) is connected to an opening and closing mechanism (11).
2. A composite pulley device according to claim 1, characterized in that: The other end of the connecting pin shaft (4) is connected to a power device.
3. A composite pulley device according to claim 1, characterized in that: The guide wheel group A (5) and the guide wheel group B (6) have the same structural setting; the guide wheel group A (5) is a symmetrical structural setting; the two guide wheels on the guide wheel group A (5) are in contact with the slideway (2).
4. A composite pulley device according to claim 1, characterized in that: Composite guide wheels (8) are respectively arranged at both ends of the pulley (7); the composite guide wheels (8) are connected and fixed to the front and rear sides of the pulley device (3) via composite pins (9).
5. A composite pulley device according to claim 1, characterized in that: The guide wheels of the guide wheel group A (5) and the guide wheel group B (6) are arranged on the left and right sides of the pulley device (3).
6. A composite pulley device according to claim 1, characterized in that: The composite pin shaft (9) has a shaft shoulder at one end and a ring groove at the other end.