Adjustable polyethylene roller assembly

Abstract

The utility model discloses an adjustable polyethylene roller assembly which comprises a shell, a roller and a reset spring, rotating shafts are symmetrically and fixedly installed at the two ends of the roller, a connecting plate is arranged at one end of each rotating shaft, the connecting plates are rotationally connected with the rotating shafts, one end of each connecting plate is connected with a connecting base in a sliding mode, and one end of each connecting base is rotationally connected with an adjusting sleeve. A first mounting seat is arranged on one section of the adjusting sleeve, a threaded rod is fixedly mounted at one end of the first mounting seat, the threaded rod is in through connection with the adjusting sleeve, and a rotating handle is rotationally connected to one end of the adjusting sleeve; axial force is generated by rotating the rotating handle and utilizing thread transmission to drive the first mounting seat to axially move along the telescopic rod, so that the telescopic rod is stretched or compressed, as the reset spring is mounted in the middle of the limiting plates at the two ends of the telescopic rod, the distance between the limiting plates can be changed due to the length change of the telescopic rod, then the tension force of the reset spring is adjusted, operation is simple, and operation is convenient. And the tensioning state of the reset spring can be flexibly changed according to requirements.

Description

Technical Field

[0001] This utility model relates to the field of roller assembly technology, specifically an adjustable polyethylene roller assembly. Background Technology

[0002] A roller is a common mechanical part, typically a cylindrical or near-cylindrical object capable of rotating around a central axis. It is generally made of materials such as metal, plastic, or rubber. Rollers are widely used in various equipment and machinery, primarily for supporting objects, transmitting power, reducing friction, and enabling the movement or positioning of objects through rolling.

[0003] According to the roller assembly disclosed in announcement number CN217022073U, which relates to the field of mechanical parts technology, this application addresses the problems of insufficient shock absorption and inconvenient braking with a single braking device in existing roller assemblies. The proposed solution includes a housing and symmetrically distributed support plates. A rotating shaft is fixedly installed between the two support plates. A roller is rotatably fitted onto the circumferential sidewall of the rotating shaft. Two identical telescopic rods are rotatably installed between the support plates and the inner sidewall of the housing. A first and second sliding groove are formed at the top of the housing's interior. Symmetrically distributed support rods are slidably installed in the first sliding groove, and clamping blocks are fixedly installed at the bottom of the support rods. This application can improve the shock absorption effect of the roller assembly, reduce wear on the rollers, and extend the roller's service life. Furthermore, foot pedals for braking are provided on both sides of the housing, facilitating braking operation of the rollers even after the caster changes direction.

[0004] The device described above uses two telescopic rods between the housing and the support plate to reduce the vibration of the rollers and achieve buffering and shock absorption. According to the instruction manual and the attached drawings, the device uses a return spring for reset. However, the return spring will fatigue after a long period of use, and the tension will change, resulting in failure to reset properly and causing inconvenience in use. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the above-mentioned device can reduce the vibration of the roller by setting two telescopic rods between the housing and the support plate, thereby achieving buffering and shock absorption of the roller. According to the specification and drawings, the device uses a return spring for reset. However, the return spring will fatigue after a long period of use, and the tension will change, resulting in failure to reset properly and causing inconvenience in use. Therefore, this utility model provides an adjustable polyethylene roller assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable polyethylene roller assembly, comprising a housing, rollers, and a return spring. Rotary shafts are symmetrically fixedly mounted at both ends of the rollers. A connecting plate is provided at one end of each rotating shaft, and the connecting plate is rotatably connected to the rotating shaft. A connecting seat is slidably connected to one end of the connecting plate, and an adjusting sleeve is rotatably connected to one end of the connecting seat. A mounting seat is provided at one end of the adjusting sleeve. A threaded rod is fixedly mounted at one end of the mounting seat, and the threaded rod is connected through the adjusting sleeve. A rotating handle is rotatably connected to one end of the adjusting sleeve, and the rotating handle is threadedly connected to the threaded rod. A second mounting seat is fixedly mounted on the inner wall of the housing, and a telescopic rod is fixedly mounted between the first and second mounting seats.

[0007] As a further embodiment of this utility model: an adjusting screw is rotatably connected inside the connecting plate, and the adjusting screw is threadedly connected to the connecting seat; an adjusting handle is rotatably connected to the top of the connecting plate, and the adjusting screw passes through the connecting plate and is fixedly installed with the adjusting handle.

[0008] As a further improvement of this utility model: the connecting plate has a sliding groove inside, and the sliding groove is symmetrically opened inside the connecting plate. The connecting seat has sliders fixedly installed symmetrically at both ends, and the sliders are slidably adapted to the sliding groove.

[0009] As a further embodiment of this utility model: a limiting plate is fixedly installed at one end of the telescopic rod, and the limiting plates are symmetrically fixedly installed at both ends of the telescopic rod, with a return spring fixedly installed in the middle of the two sets of limiting plates.

[0010] As a further improvement of this utility model: a foot pedal is slidably connected to one end of the housing, and the foot pedal is symmetrically slidably connected to both ends of the housing.

[0011] As a further improvement of this utility model, a connecting rod is fixedly installed at the top of the housing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this utility model, by rotating the handle, axial force is generated by the threaded transmission, which drives the mounting base to move along the axial direction of the telescopic rod, so that the telescopic rod is stretched or compressed. Since the return spring is installed in the middle of the limit plates at both ends of the telescopic rod, the change of the length of the telescopic rod will change the distance between the limit plates, thereby adjusting the tension of the return spring. The operation is simple and the tension of the return spring can be flexibly changed according to the needs.

[0014] In this invention, rotating the adjustment handle allows the connecting seat to slide via threaded transmission and guide groove, thereby changing the position of related components and finely adjusting the tension of the reset spring to meet different working conditions. The support angle of the telescopic rod can be adjusted as needed. When it is at 90 degrees, it provides vertical support and mainly bears vertical force to ensure the stability of the device. When adjusted to one side high and the other low, it can adapt to different working requirements and stress conditions, increasing the flexibility and adaptability of the device and enabling it to cope with complex working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of the shell in this utility model;

[0017] Figure 3 This is a partially enlarged structural schematic diagram of the shell in this utility model;

[0018] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the local structure at point A;

[0019] Figure 5 This is a schematic diagram of the adjustment structure of the connecting seat in this utility model.

[0020] In the diagram: 1. Housing; 2. Connecting rod; 3. Foot pedal; 4. Roller; 5. Shaft; 6. Connecting plate; 7. Connecting seat; 8. Adjusting sleeve; 9. Mounting seat one; 10. Threaded rod; 11. Rotating handle; 12. Mounting seat two; 13. Telescopic rod; 14. Return spring; 15. Limiting plate; 16. Slider; 17. Slide groove; 18. Adjusting screw; 19. Adjusting handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Reference Figures 1 to 5 In this embodiment of the utility model, an adjustable polyethylene roller assembly includes a housing 1, a roller 4, and a return spring 14. Rotary shafts 5 are symmetrically fixedly installed at both ends of the roller 4. A connecting plate 6 is provided at one end of the rotating shaft 5, and the connecting plate 6 is rotatably connected to the rotating shaft 5. A connecting seat 7 is slidably connected to one end of the connecting plate 6, and an adjusting sleeve 8 is rotatably connected to one end of the connecting seat 7. A mounting seat 9 is provided at one end of the adjusting sleeve 8. A threaded rod 10 is fixedly installed at one end of the mounting seat 9, and the threaded rod 10 is connected through to the adjusting sleeve 8. A rotating handle 11 is rotatably connected to one end of the adjusting sleeve 8, and the rotating handle 11 is threadedly connected to the threaded rod 10. A second mounting seat 12 is fixedly installed on the inner wall of the housing 1, and a telescopic rod 13 is fixedly installed in the middle of the first mounting seat 9 and the second mounting seat 12.

[0024] The above solution is adopted as follows: the return spring 14 is the prior art mentioned in the reference document, the roller 4 is made of polyethylene, and the telescopic rod 13 is made of KOMPERDELL. Through "carbon fiber F200+ technology", the breaking strength is improved without increasing the weight, and the elastic deformation is used to absorb and disperse energy to achieve the shock absorption effect.

[0025] Reference Figures 1 to 5An adjusting screw 18 is rotatably connected inside the connecting plate 6, and the adjusting screw 18 is threadedly connected to the connecting seat 7. An adjusting handle 19 is rotatably connected to the top of the connecting plate 6, and the adjusting screw 18 passes through the connecting plate 6 and is fixedly installed with the adjusting handle 19. A sliding groove 17 is opened inside the connecting plate 6, and the sliding groove 17 is symmetrically opened inside the connecting plate 6. Slider 16 is symmetrically fixedly installed at both ends of the connecting seat 7, and the slider 16 slides and the sliding groove 17 are adapted to slide.

[0026] The above solution allows the connecting seat 7 to slide by rotating the adjusting handle 19 via threaded transmission and guide by the slide groove 17, thereby changing the position of the connecting seat and finely adjusting the tension of the return spring 14 to meet different working conditions. The support angle of the telescopic rod 13 can be adjusted as needed. When it is at 90 degrees, it provides vertical support and mainly bears vertical force to ensure the stability of the device. When adjusted to one side high and the other side low, it can adapt to different working requirements and stress conditions, increasing the flexibility and adaptability of the device and enabling it to cope with complex working conditions.

[0027] Reference Figures 1 to 5 One end of the telescopic rod 13 is fixedly installed with a limiting plate 15, and the limiting plates 15 are symmetrically fixedly installed at both ends of the telescopic rod 13. A return spring 14 is fixedly installed in the middle of the two sets of limiting plates 15. One end of the housing 1 is slidably connected with a foot pedal 3, and the foot pedal 3 is symmetrically slidably connected to both ends of the housing 1. A connecting rod 2 is fixedly installed at the top of the housing 1.

[0028] The above solution is adopted: the foot pedal 3 is the prior art referenced in the prior art document, which drives the clamping blocks (not shown in the figure) inside the housing 1 to move closer to each other and brake the roller 4. The top of the connecting rod 2 is provided with a threaded groove for installation.

[0029] The working principle of this utility model is as follows: When the tension of the return spring 14 on the outer periphery of the telescopic rod 13 changes and needs to be adjusted, the rotating handle 11 is threadedly connected to the threaded rod 10. When the operator rotates the rotating handle 11, due to the thread transmission principle, the rotating handle 11 moves in a circular motion around the threaded rod 10, generating an axial force. The threaded rod 10 is fixedly installed on the mounting base 9. Under the action of the axial force generated by the rotating handle 11, the mounting base 9 moves along the axial direction of the telescopic rod 13. The two ends of the telescopic rod 13 are respectively connected to the mounting base 9 and the mounting base 12. The axial movement of the mounting base 9 causes the telescopic rod 13 to be stretched or compressed, changing its length. The return spring 14 is installed in the middle of the limiting plates 15 at both ends of the telescopic rod 13. As the length of the telescopic rod 13 changes, the distance between the two sets of limiting plates 15 changes accordingly. When the telescopic rod 13 is stretched, the distance between the limiting plates 15 increases, the return spring 14 is stretched, and the tension increases; when the telescopic rod 13 is compressed, the limiting plate 15 is compressed, and the tension increases. When the spacing between plates 15 decreases, the tension of the return spring 14 decreases, thereby adjusting the tension of the return spring 14. When the adjustment handle 19 is rotated, the adjustment screw 18 fixedly connected to it rotates accordingly. Since the adjustment screw 18 is threadedly connected to the connecting seat 7, and the sliders 16 at both ends of the connecting seat 7 are slidably adapted to the sliding groove 17 inside the connecting plate 6, under the dual action of threaded transmission and sliding groove guidance, the connecting seat 7 produces sliding displacement along the sliding groove 17. The sliding of the connecting seat 7 causes the adjustment sleeve 8 and mounting seat 1 9, which are rotatably connected to it, to change their positions. The telescopic rod 13 and the return spring 14 are installed between the mounting seat 1 9 and the mounting seat 2 12. After the position of the mounting seat 1 9 changes, the relative angle and distance between the mounting seat 1 9 and the mounting seat 2 12 will change, thereby changing the extension and retraction state of the telescopic rod 13, and at the same time adjusting the degree of tension or compression of the return spring 14, thereby achieving fine adjustment of the tension of the return spring 14, thus meeting the usage requirements under different working conditions.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable polyethylene roller assembly comprising a housing (1), a roller (4) and a return spring (14), the roller (4) being fixedly mounted with a rotating shaft (5) symmetrically at both ends, characterized in that, The pivot shaft (5) is provided with a connecting plate (6) at one end, and the connecting plate (6) is rotatably connected with the pivot shaft (5), one end of the connecting plate (6) is slidably connected with a connecting seat (7), one end of the connecting seat (7) is rotatably connected with an adjusting sleeve (8), one end of the adjusting sleeve (8) is provided with a mounting seat (9), one end of the mounting seat (9) is fixedly installed with a threaded rod (10), and the threaded rod (10) is in through connection with the adjusting sleeve (8), one end of the adjusting sleeve (8) is rotatably connected with a rotating handle (11), and the rotating handle (11) is in threaded connection with the threaded rod (10), the inner wall of the shell (1) is fixedly installed with a mounting seat (12), and the middle part of the mounting seat (9) and the mounting seat (12) is fixedly installed with an extension rod (13).

2. An adjustable polyethylene roller assembly as claimed in claim 1, wherein, The connecting plate (6) is rotatably connected with an adjusting screw (18) inside, and the adjusting screw (18) is in threaded connection with the connecting seat (7), the top end of the connecting plate (6) is rotatably connected with an adjusting handle (19), and the adjusting screw (18) is in fixed installation through the connecting plate (6) and the adjusting handle (19).

3. An adjustable polyethylene roller assembly as defined in claim 2, wherein, The connecting plate (6) is provided with a sliding groove (17) inside, and the sliding groove (17) is symmetrically arranged inside the connecting plate (6), the connecting seat (7) is symmetrically fixedly installed with a sliding block (16) at both ends, and the sliding block (16) is in sliding fit with the sliding groove (17).

4. An adjustable polyethylene roller assembly as defined in claim 3, wherein, One end of the extension rod (13) is fixedly installed with a limiting plate (15), and the limiting plate (15) is symmetrically fixedly installed at both ends of the extension rod (13), and the middle part of the two groups of limiting plates (15) is fixedly installed with a return spring (14).

5. An adjustable polyethylene roller assembly as defined in claim 1, wherein, One end of the shell (1) is slidably connected with a foot pedal (3), and the foot pedal (3) is symmetrically slidably connected at both ends of the shell (1).

6. An adjustable polyethylene roller assembly as defined in claim 1, wherein, The top end of the shell (1) is fixedly installed with a connecting rod (2).

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