High-wear-resistance shock-absorbing universal wheel

Abstract

The utility model relates to the technical field of universal wheel, especially a high wear -resisting shock -absorbing universal wheel, the utility model has the advantages of: through the orientation of guide sleeve seat and telescopic column's orientation guide, make the buffer space of gyro wheel body has the sliding upwards, can absorb the kinetic energy of buffer sliding through first buffer spring and second buffer spring, and through the guide rod promotes the guide piston to slide in the piston hole, can promote the internal air pressure to discharge through the air micro -hole, simultaneously in through first buffer spring and second buffer spring promote reset and pull up, inhale the airflow through the air micro -hole, through the flow restriction of air micro -hole, can limit the speed of guide piston's promotion and pull up, and then control the speed of buffer sliding, and then slow down the frequency of vibration, improve the effect of buffer protection, improve the filter shock effect through two stage spring buffer, and through the polyurethane material of wear -resistant layer can improve the wear -resisting effect, improve the elasticity, improve the buffer effect.

Description

Technical Field

[0001] This utility model relates to the field of caster wheel technology, and in particular to a highly wear-resistant and shock-absorbing caster wheel. Background Technology

[0002] With the rapid development of modern logistics, industrial equipment, medical devices, and smart homes, casters, as key components, directly affect the stability, lifespan, and user experience of equipment. Traditional casters present the following technical problems in practical applications:

[0003] Traditional structural designs lack effective shock absorption mechanisms. When equipment passes over uneven surfaces or is impacted, vibrations are directly transmitted to the equipment itself, affecting the accuracy of precision instruments and even causing structural damage. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a highly wear-resistant and shock-absorbing universal wheel, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a high wear-resistant and shock-absorbing universal wheel, including a guide sleeve seat. A fixed plate is fixedly connected to the top surface of the guide sleeve seat. A guide rod is fixedly connected to the center of the top surface of the inner wall of the guide sleeve seat. A guide piston is fixedly connected to the bottom end of the guide rod. A sliding plate is slidably connected to the inner wall of the guide sleeve seat. A telescopic column is fixedly connected to the center of the bottom surface of the sliding plate. A piston hole is formed at the center of the telescopic column and the center of the sliding plate. A vent micro-hole is formed at the bottom of the side of the telescopic column, and the vent micro-hole communicates with the bottom of the inner wall of the piston hole. A spring baffle is fixedly connected to the bottom end, and a connecting bearing is fixedly connected to the center of the bottom surface of the spring baffle. A roller body is fixedly connected to the inner ring of the connecting bearing. A first buffer spring is sleeved on the outer wall of the telescopic column. The length of the first buffer spring after reset is adapted to the length of the telescopic column. A second buffer spring is provided at the top of the inner wall of the guide sleeve seat. The second buffer spring is located between the top surface of the sliding plate and the top surface of the inner wall of the guide sleeve seat. The length of the second buffer spring after reset is adapted to the height of the inner wall of the guide sleeve seat. A wear-resistant layer is fixedly connected to the outer wall of the roller body. The wear-resistant layer is made of polyurethane.

[0006] Preferably, in any of the above embodiments, the diameter of the outer wall of the telescopic column is adapted to the diameter of the bottom opening of the guide sleeve seat, the length of the telescopic column is adapted to the depth of the inner wall of the guide sleeve seat, and the length of the guide rod is adapted to the depth of the inner wall of the guide sleeve seat.

[0007] The technical effect achieved by adopting the above solution is that the guiding stroke of the telescopic column and the guide sleeve seat can be fully utilized.

[0008] Preferably, in any of the above embodiments, the roller body is rotatably connected to the spring baffle via a connecting bearing, the diameter of the spring baffle is larger than the diameter of the first buffer spring, and the second buffer spring is fitted around the outside of the guide rod.

[0009] The technical effect achieved by adopting the above scheme is that the first buffer spring can be pushed by the spring baffle, and the kinetic energy of the buffer sliding can be absorbed and buffered through the first buffer spring and the second buffer spring.

[0010] Preferably, in any of the above embodiments, the diameter of the venting micropore is smaller than the diameter of the inner wall of the piston hole, and the length of the piston hole is adapted to the length of the guide rod.

[0011] The technical effect achieved by adopting the above solution is that by limiting the flow of the venting micro-holes, the speed at which the guide piston is pushed and pulled can be limited, thereby controlling the speed of the buffer sliding, thus reducing the frequency of vibration and improving the buffer protection effect.

[0012] Preferably, in any of the above embodiments, the sliding plate and the inner wall of the guide sleeve seat are both rectangular in cross-section, the edge of the sliding plate is clearance-fitted with the inner wall of the guide sleeve seat, and the surface of the fixed plate is provided with several fixing holes.

[0013] The technical effect achieved by adopting the above solution is that the rotation can be restricted by the rectangular sliding plate, preventing the telescopic column from twisting.

[0014] This utility model has the following advantages:

[0015] 1. This high wear-resistant and shock-absorbing universal wheel, guided by the guide sleeve seat and telescopic column, provides the roller body with a buffer space for upward sliding. At the same time, the first and second buffer springs can absorb the kinetic energy of the buffer sliding. Furthermore, the guide rod pushes the guide piston to slide inside the piston hole, which can push the internal air pressure to be discharged through the venting micro-hole. When pushed back by the first and second buffer springs, it is pulled up and airflow is drawn in through the venting micro-hole. The flow rate limitation of the venting micro-hole can limit the pushing and pulling speed of the guide piston, thereby controlling the speed of buffer sliding, thus reducing the frequency of vibration and improving the buffer protection effect.

[0016] 2. This high wear-resistant and shock-absorbing caster wheel uses a two-stage spring buffer to improve the shock absorption effect. In addition, the polyurethane material of the wear-resistant layer can improve the wear resistance, while also improving the elasticity and buffering effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a side view of the structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0020] In the figure: 1-guide sleeve seat, 2-telescopic column, 3-ventilation micro-hole, 4-spring baffle, 5-connecting bearing, 6-roller body, 7-first buffer spring, 8-fixed plate, 9-guide rod, 10-guide piston, 11-second buffer spring, 12-piston hole, 13-sliding plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 3 As shown, a high wear-resistant and shock-absorbing universal caster includes a guide sleeve seat 1, a fixed plate 8 fixedly connected to the top surface of the guide sleeve seat 1, a guide rod 9 fixedly connected to the center of the top surface of the inner wall of the guide sleeve seat 1, a guide piston 10 fixedly connected to the bottom end of the guide rod 9, a sliding plate 13 slidably connected to the inner wall of the guide sleeve seat 1, a telescopic column 2 fixedly connected to the center of the bottom surface of the sliding plate 13, a piston hole 12 opened at the center of the telescopic column 2 and the center of the sliding plate 13, a venting micro-hole 3 opened at the bottom of the side of the telescopic column 2, the venting micro-hole 3 communicating with the bottom of the inner wall of the piston hole 12, and a spring fixedly connected to the bottom end of the telescopic column 2. A spring baffle 4 is fixedly connected to a connecting bearing 5 at the center of its bottom surface. A roller body 6 is fixedly connected to the inner ring of the connecting bearing 5. A first buffer spring 7 is sleeved on the outer wall of the telescopic column 2. The length of the first buffer spring 7 after reset is adapted to the length of the telescopic column 2. A second buffer spring 11 is provided on the top of the inner wall of the guide sleeve seat 1. The second buffer spring 11 is located between the top surface of the sliding plate 13 and the top surface of the inner wall of the guide sleeve seat 1. The length of the second buffer spring 11 after reset is adapted to the height of the inner wall of the guide sleeve seat 1. A wear-resistant layer is fixedly connected to the outer wall of the roller body 6. The wear-resistant layer is made of polyurethane.

[0023] As an optional technical solution of this utility model, the diameter of the outer wall of the telescopic column 2 is adapted to the diameter of the bottom opening of the guide sleeve seat 1, the length of the telescopic column 2 is adapted to the depth of the inner wall of the guide sleeve seat 1, and the length of the guide rod 9 is adapted to the depth of the inner wall of the guide sleeve seat 1, so as to give full play to the guiding stroke of the telescopic column 2 and the guide sleeve seat 1.

[0024] As an optional technical solution of this utility model, the roller body 6 is rotatably connected to the spring baffle 4 through the connecting bearing 5. The diameter of the spring baffle 4 is larger than the diameter of the first buffer spring 7. The second buffer spring 11 is fitted outside the guide rod 9, so that the first buffer spring 7 can be pushed by the spring baffle 4. The first buffer spring 7 and the second buffer spring 11 can absorb and buffer the kinetic energy of the sliding.

[0025] As an optional technical solution of this utility model, the diameter of the ventilation micro-hole 3 is smaller than the diameter of the inner wall of the piston hole 12, and the length of the piston hole 12 is adapted to the length of the guide rod 9. Thus, by limiting the flow of the ventilation micro-hole 3, the speed of pushing and pulling the guide piston 10 can be limited, thereby controlling the speed of buffer sliding, thereby reducing the frequency of vibration and improving the buffer protection effect.

[0026] As an optional technical solution of this utility model, the sliding plate 13 and the inner wall of the guide sleeve seat 1 are both rectangular in cross section. The edge of the sliding plate 13 is clearance-fitted with the inner wall of the guide sleeve seat 1. The surface of the fixed plate 8 is provided with several fixing holes. The rectangular structure of the sliding plate 13 can restrict rotation and prevent the telescopic column 2 from twisting.

[0027] These highly wear-resistant and shock-absorbing casters require the following steps for use:

[0028] 1) Through the guidance of the guide sleeve seat 1 and the telescopic column 2, the roller body 6 has a buffer space for upward sliding;

[0029] 2) The first buffer spring 7 and the second buffer spring 11 can absorb and buffer the kinetic energy of the sliding.

[0030] 3) The guide piston 10 is pushed to slide inside the piston hole 12 by the guide rod 9, which can push the internal air pressure out through the ventilation microhole 3. At the same time, when it is pushed to reset by the first buffer spring 7 and the second buffer spring 11, it is pulled up and air is drawn in through the ventilation microhole 3. The flow rate limitation of the ventilation microhole 3 can limit the pushing and pulling speed of the guide piston 10, thereby controlling the speed of the buffer sliding, thus reducing the frequency of vibration and improving the buffer protection effect.

[0031] In summary, the guide sleeve seat 1 and the telescopic column 2 provide a buffer space for the roller body 6 to slide upwards. Simultaneously, the first buffer spring 7 and the second buffer spring 11 absorb the kinetic energy of the sliding. Furthermore, the guide rod 9 pushes the guide piston 10 to slide inside the piston hole 12, allowing internal air pressure to be discharged through the venting micro-hole 3. When the guide piston 10 is pushed back to its original position by the first buffer spring 7 and the second buffer spring 11, it is pulled up, drawing in air through the venting micro-hole 3. The flow rate limitation of the venting micro-hole 3 restricts the pushing and pulling speed of the guide piston 10, thereby controlling the speed of the sliding and reducing the vibration frequency, thus improving the buffering and protection effect. The two-stage spring buffering improves the vibration filtering effect, and the polyurethane material of the wear-resistant layer enhances wear resistance and elasticity, further improving the buffering effect.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly wear-resistant and shock-absorbing universal caster, characterized in that: The system includes a guide sleeve seat (1), a fixed plate (8) fixedly connected to the top surface of the guide sleeve seat (1), a guide rod (9) fixedly connected to the center of the top surface of the inner wall of the guide sleeve seat (1), a guide piston (10) fixedly connected to the bottom end of the guide rod (9), a sliding plate (13) slidably connected to the inner wall of the guide sleeve seat (1), a telescopic column (2) fixedly connected to the center of the bottom surface of the sliding plate (13), a piston hole (12) being opened at the center of the telescopic column (2) and the center of the sliding plate (13), a venting micro-hole (3) being opened at the bottom of the side of the telescopic column (2), the venting micro-hole (3) communicating with the bottom of the inner wall of the piston hole (12), and a spring baffle (4) fixedly connected to the bottom end of the telescopic column (2). A connecting bearing (5) is fixedly connected to the center of the bottom surface of the spring baffle (4). A roller body (6) is fixedly connected to the inner ring of the connecting bearing (5). A first buffer spring (7) is sleeved on the outer wall of the telescopic column (2). The length of the first buffer spring (7) after reset is adapted to the length of the telescopic column (2). A second buffer spring (11) is provided on the top of the inner wall of the guide sleeve seat (1). The second buffer spring (11) is located between the top surface of the sliding plate (13) and the top surface of the inner wall of the guide sleeve seat (1). The length of the second buffer spring (11) after reset is adapted to the height of the inner wall of the guide sleeve seat (1). A wear-resistant layer is fixedly connected to the outer wall of the roller body (6). The material of the wear-resistant layer is polyurethane.

2. The high wear-resistant and shock-absorbing caster wheel according to claim 1, characterized in that: The diameter of the outer wall of the telescopic column (2) is adapted to the diameter of the bottom opening of the guide sleeve seat (1), the length of the telescopic column (2) is adapted to the depth of the inner wall of the guide sleeve seat (1), and the length of the guide rod (9) is adapted to the depth of the inner wall of the guide sleeve seat (1).

3. The high wear-resistant and shock-absorbing caster wheel according to claim 2, characterized in that: The roller body (6) is rotatably connected to the spring baffle (4) via the connecting bearing (5). The diameter of the spring baffle (4) is larger than the diameter of the first buffer spring (7). The second buffer spring (11) is fitted around the outside of the guide rod (9).

4. The high wear-resistant and shock-absorbing caster wheel according to claim 3, characterized in that: The diameter of the ventilation micro-hole (3) is smaller than the diameter of the inner wall of the piston hole (12), and the length of the piston hole (12) is adapted to the length of the guide rod (9).

5. The high wear-resistant and shock-absorbing caster wheel according to claim 4, characterized in that: The sliding plate (13) and the inner wall of the guide sleeve seat (1) are both rectangular in cross section. The edge of the sliding plate (13) is clearance-fitted with the inner wall of the guide sleeve seat (1). The surface of the fixed plate (8) is provided with several fixing holes.

Images