High-load-bearing stable falling-resistant universal wheel device

Abstract

The utility model relates to the technical field of casters, and discloses a high load-bearing stable break-resistant universal wheel device, which comprises a base, a rotating shaft and a mounting seat, the bottom of the mounting seat is provided with a buffer assembly, the bottom of the mounting seat is provided with a reinforcing assembly, the buffer assembly comprises a mounting plate, the bottom of the mounting plate is fixedly connected with a round pipe, and the round pipe is fixedly connected with the rotating shaft. And a piston is slidably connected to the interior of the circular pipe. According to the high-load-bearing stable falling-resistant universal wheel device, when the moving wheel is impacted by the ground, impact force is transmitted to the piston rod through the mounting frame, the piston is pushed to slide upwards in the oil-filled circular pipe, at the moment, oil generates a damping effect through an oil hole in the piston to consume kinetic energy, meanwhile, a spring arranged on the outer sides of the circular pipe and the piston rod in a sleeving mode is compressed to store energy, and the moving wheel is driven to move upwards. Impact energy is further absorbed through elastic deformation, when impact disappears, the spring releases stored energy to push the piston to reset, oil flows back through the oil hole, stable reciprocating buffering motion is achieved, and the advantage that the whole universal wheel device is resistant to falling is achieved.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, specifically to a high-load-bearing, stable, and drop-resistant universal wheel device. Background Technology

[0002] Casters include swivel casters and fixed casters. Fixed casters have no rotating structure and can only rotate vertically, not horizontally. Swivel wheels are swivel casters, which are casters mounted on a bracket that can rotate 360 ​​degrees horizontally under dynamic or static loads.

[0003] Traditional casters are mostly directly connected to the frame, lacking a cushioning structure, which makes them prone to deformation under impact. Therefore, a high-load-bearing, stable, and impact-resistant caster device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-load-bearing, stable, and drop-resistant universal wheel device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high load-bearing, stable and drop-resistant universal wheel device, including a base, a rotating shaft and a mounting base, wherein a buffer component is provided at the bottom of the mounting base and a reinforcing component is provided at the bottom of the mounting base;

[0006] The buffer assembly includes a mounting plate, a circular tube fixedly connected to the bottom of the mounting plate, a piston slidably connected inside the circular tube, a piston rod fixedly connected to the bottom of the piston, a mounting frame fixedly connected to the bottom of the piston rod, a spring fixedly connected between the mounting plate and the mounting frame, and a movable wheel rotatably connected to the inner side of the mounting frame.

[0007] Preferably, the rotating shaft is rotatably connected to the bottom of the base, the mounting base is fixedly connected to the bottom of the rotating shaft, and the mounting plate is fixedly connected to the bottom of the mounting base.

[0008] Preferably, the inside of the circular tube is filled with oil, the diameter of the piston is equal to the inner diameter of the circular tube, and an oil hole is provided on the piston.

[0009] Preferably, the piston rod passes through the circular tube and extends to its bottom, and the spring is sleeved on the outside of the circular tube and the piston rod.

[0010] Preferably, a rotating shaft is rotatably connected to the mounting frame, the movable wheel is fixedly connected to the rotating shaft, and the movable wheel is supported by metal and wrapped with rubber on its outside.

[0011] Preferably, the reinforcing component includes a first connecting plate, a second connecting plate is fixedly connected to the bottom of the first connecting plate, and a reinforcing plate is fixedly connected between the first connecting plate and the second connecting plate.

[0012] Preferably, the first connecting plate is fixedly connected to the bottom of the mounting base, and there are two first connecting plates symmetrically distributed on both sides of the mounting plate. The second connecting plate is sleeved on the outside of the rotating shaft, and the reinforcing plate is designed with a 45-degree inclination. The first connecting plate, the second connecting plate and the reinforcing plate form a triangular structure.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] First, when the caster wheel is impacted by the ground, the impact force is transmitted to the piston rod through the mounting frame, pushing the piston to slide upward in the oil-filled circular tube. At this time, the oil generates a damping effect through the oil hole on the piston, consuming kinetic energy. Simultaneously, the spring sleeved on the outside of the circular tube and the piston rod is compressed to store energy, and further absorbs the impact energy through elastic deformation. When the impact disappears, the spring releases the stored energy to push the piston back to its original position, and the oil flows back through the oil hole, achieving a smooth reciprocating buffering motion, thus achieving the advantage of the entire caster wheel device being impact-resistant.

[0015] Secondly, the design of the second connecting plate sleeved with the rotating shaft in this utility model can prevent the rotating shaft from deforming and ensure the rotational stability of the moving wheel. At the same time, the triangular three-dimensional support system formed by the first connecting plate, the second connecting plate and the reinforcing plate improves the overall structural strength of the moving wheel under heavy load and impact conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating shaft and related parts of this utility model;

[0018] Figure 3 This is a partial structural diagram of the buffer component of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the circular tube of this utility model.

[0020] The components are as follows: 1. Base; 2. Rotating shaft; 3. Mounting seat; 4. Buffer assembly; 401. Mounting plate; 402. Round tube; 403. Piston; 4031. Oil hole; 404. Piston rod; 405. Mounting frame; 406. Spring; 407. Moving wheel; 5. Reinforcing assembly; 501. First connecting plate; 502. Second connecting plate; 503. Reinforcing plate. 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] This utility model provides the following technical solution:

[0023] Example 1

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A high load-bearing, stable and drop-resistant universal wheel device includes a base 1, a rotating shaft 2 and a mounting base 3, with a buffer component 4 provided at the bottom of the mounting base 3;

[0025] The buffer assembly 4 includes a mounting plate 401, a round tube 402 fixedly connected to the bottom of the mounting plate 401, a piston 403 slidably connected inside the round tube 402, a piston rod 404 fixedly connected to the bottom of the piston 403, a mounting frame 405 fixedly connected to the bottom of the piston rod 404, a spring 406 fixedly connected between the mounting plate 401 and the mounting frame 405, and a movable wheel 407 rotatably connected to the inner side of the mounting frame 405.

[0026] The rotating shaft 2 is rotatably connected to the bottom of the base 1, the mounting base 3 is fixedly connected to the bottom of the rotating shaft 2, and the mounting plate 401 is fixedly connected to the bottom of the mounting base 3.

[0027] By rotating the shaft 2 to the bottom of the base 1 and fixing the mounting base 3 to the bottom of the shaft 2, the moving wheel 407 can rotate freely 360°. At the same time, the rigid fixation of the mounting plate 401 and the mounting base 3 ensures the stable installation of the buffer assembly 4, forming a clear force transmission path.

[0028] The inside of the round tube 402 is filled with oil. The diameter of the piston 403 is equal to the inner diameter of the round tube 402. An oil hole 4031 is opened on the piston 403.

[0029] The round tube 402 is filled with oil and is precisely fitted with a piston 403. Through the oil hole 4031, a controllable hydraulic damping system is formed. When the moving wheel 407 is impacted, the oil generates buffer resistance through the throttling effect of the oil hole 4031. It works in conjunction with the spring 406 to achieve multi-stage shock absorption and improve the impact resistance of the entire device under heavy load conditions.

[0030] The piston rod 404 passes through the round tube 402 and extends to its bottom, and the spring 406 is sleeved on the outside of the round tube 402 and the piston rod 404.

[0031] The piston rod 404 passes through the circular tube 402 to form a double guide structure. Together with the spring 406 sleeved on the outside, it forms a compact elastic buffer system, which not only ensures the linear stability of the piston 403 movement, but also prevents the piston rod 404 from wobbling through the radial wrapping of the spring 406.

[0032] A rotating shaft is rotatably connected to the mounting frame 405, and a movable wheel 407 is fixedly connected to the rotating shaft. The movable wheel 407 is supported by metal and its outer side is covered with rubber.

[0033] The mounting frame 405 connects to the movable wheel 407, which has a metal core and a rubber outer layer, via a pivot. The metal core provides high load-bearing support, while the rubber outer layer has the functions of shock absorption, noise reduction, and increasing the coefficient of friction. This composite structure enables the movable wheel 407 to simultaneously meet the requirements of high load, impact resistance, and quiet movement.

[0034] Through the above technical solution, when the caster wheel 407 is impacted by the ground, the impact force is transmitted to the piston rod 404 through the mounting frame 405, pushing the piston 403 to slide upward in the oil-filled circular tube 402. At this time, the oil generates a damping effect through the oil hole 4031 on the piston 403, consuming kinetic energy. At the same time, the spring 406, which is sleeved on the outside of the circular tube 402 and the piston rod 404, is compressed and stores energy. Through elastic deformation, it further absorbs the impact energy. When the impact disappears, the spring 406 releases the stored energy and pushes the piston 403 to reset. The oil flows back through the oil hole 4031, realizing a smooth reciprocating buffering motion, and achieving the benefit of the entire caster wheel device being impact-resistant.

[0035] Example 2

[0036] Please see Figure 1 and Figure 2 Furthermore, based on Embodiment 1, the following is obtained: a reinforcing component 5 is provided at the bottom of the mounting base 3;

[0037] The reinforcing component 5 includes a first connecting plate 501, a second connecting plate 502 fixedly connected to the bottom of the first connecting plate 501, and a reinforcing plate 503 fixedly connected between the first connecting plate 501 and the second connecting plate 502.

[0038] The first connecting plate 501 is fixedly connected to the bottom of the mounting base 3. There are two first connecting plates 501, which are symmetrically distributed on both sides of the mounting plate 401. The second connecting plate 502 is sleeved on the outside of the rotating shaft. The reinforcing plate 503 is designed with a 45-degree inclination. The first connecting plate 501, the second connecting plate 502 and the reinforcing plate 503 form a triangular structure.

[0039] Through the above technical solution, the design of the second connecting plate 502 sleeved with the rotating shaft can prevent the rotating shaft from deforming and ensure the rotational stability of the moving wheel 407. At the same time, the triangular three-dimensional support system composed of the first connecting plate 501, the second connecting plate 502 and the reinforcing plate 503 improves the overall structural strength of the moving wheel 407 under heavy load and impact conditions.

[0040] The two symmetrically distributed first connecting plates 501 and the 45° inclined reinforcing plate 503 form a triangular stable structure, which, together with the second connecting plate 502 that is sleeved on the rotating shaft, constitutes a spatial force system, enabling the reinforcing component 5 to resist vertical pressure and lateral torque at the same time, greatly improving the structural stability of the moving wheel 407 under complex stress conditions.

[0041] In actual operation, when this device is in use and moves, the rotational connection of the rotating shaft 2 ensures the steering function of the moving wheel 407. The moving wheel 407 bears the ground load and achieves shock-absorbing rolling through its metal wheel core and rubber outer layer. When the moving wheel 407 is subjected to impact force, the impact force is first transmitted to the buffer assembly 4 through the mounting frame 405. The piston rod 404 drives the piston 403 to slide in the oil injection pipe 402. The oil generates a damping effect through the oil hole 4031. At the same time, the spring 406 is compressed and stores energy to achieve double buffering. The buffered load is transmitted to the mounting base 3 through the mounting plate 401. At this time, the triangular structure formed by the first connecting plate 501, the second connecting plate 502 and the reinforcing plate 503 of the reinforcing assembly 5 will evenly distribute the force and prevent stress concentration.

[0042] 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 may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-load-bearing, stable, and drop-resistant universal wheel device, comprising a base (1), a rotating shaft (2), and a mounting base (3), characterized in that: The bottom of the mounting base (3) is provided with a buffer component (4), and the bottom of the mounting base (3) is provided with a reinforcing component (5); The buffer assembly (4) includes a mounting plate (401), a round tube (402) is fixedly connected to the bottom of the mounting plate (401), a piston (403) is slidably connected inside the round tube (402), a piston rod (404) is fixedly connected to the bottom of the piston (403), a mounting frame (405) is fixedly connected to the bottom of the piston rod (404), a spring (406) is fixedly connected between the mounting plate (401) and the mounting frame (405), and a moving wheel (407) is rotatably connected to the inner side of the mounting frame (405).

2. The high load-bearing, stable, and drop-resistant universal wheel device according to claim 1, characterized in that: The rotating shaft (2) is rotatably connected to the bottom of the base (1), the mounting base (3) is fixedly connected to the bottom of the rotating shaft (2), and the mounting plate (401) is fixedly connected to the bottom of the mounting base (3).

3. The high load-bearing, stable, and drop-resistant universal wheel device according to claim 1, characterized in that: The inside of the round tube (402) is filled with oil, the diameter of the piston (403) is equal to the inner diameter of the round tube (402), and an oil hole (4031) is opened on the piston (403).

4. The high load-bearing, stable, and drop-resistant universal wheel device according to claim 1, characterized in that: The piston rod (404) passes through the round tube (402) and extends to its bottom, and the spring (406) is sleeved on the outside of the round tube (402) and the piston rod (404).

5. The high load-bearing, stable, and drop-resistant universal wheel device according to claim 1, characterized in that: A rotating shaft is rotatably connected to the mounting frame (405), and the movable wheel (407) is fixedly connected to the rotating shaft. The movable wheel (407) is supported by metal and its outer side is wrapped with rubber.

6. The high load-bearing, stable, and drop-resistant universal wheel device according to claim 5, characterized in that: The reinforcing component (5) includes a first connecting plate (501), a second connecting plate (502) is fixedly connected to the bottom of the first connecting plate (501), and a reinforcing plate (503) is fixedly connected between the first connecting plate (501) and the second connecting plate (502).

7. A high load-bearing, stable, and drop-resistant universal wheel device according to claim 6, characterized in that: The first connecting plate (501) is fixedly connected to the bottom of the mounting base (3). There are two first connecting plates (501) and they are symmetrically distributed on both sides of the mounting plate (401). The second connecting plate (502) is sleeved on the outside of the rotating shaft. The reinforcing plate (503) is designed with a 45-degree inclination. The first connecting plate (501), the second connecting plate (502) and the reinforcing plate (503) form a triangular structure.

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