Bearing trundle

Abstract

The bearing trundle comprises a trundle cover and a rolling wheel, a rotating block is arranged on the rear wall of the inner side of the trundle cover, the rotating block is rotationally connected with the trundle cover, a threaded hole is formed in the inner side of the rotating block, a hook-and-loop fastener is arranged at the bottom end of the rotating block, a cleaning cotton block is arranged at the bottom end of the hook-and-loop fastener, and the bottom end of the cleaning cotton block is connected with the rolling wheel. Sliding grooves are formed in the inner sides of the front walls of the wheel covers, hand screws are arranged on the inner sides of the sliding grooves, and the rolling wheels are fixed to the bottom ends of the inner sides of the wheel covers. Compared with an existing trundle, the load-bearing trundle is provided with the cleaning mechanism, grit, sundries and the like attached to the trundle in the using process can be cleaned, the cleanliness of the trundle is improved, abrasion of the trundle is reduced, the practicability of the trundle is improved, meanwhile, the trundle is provided with the damping mechanism, and the damping mechanism is arranged on the trundle, so that the service life of the trundle is prolonged. And the impact force borne by the device can be absorbed, vibration borne by the device and objects borne by the device is reduced, and the service life of the device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a load-bearing caster. Background Art

[0002] Casters include fixed, universal and brake casters. The elastomer of PU wheels has good properties such as wear resistance, chemical corrosion resistance, high elasticity, strong shock absorption and shock absorption. PP wheels have the advantages of higher hardness, stronger bearing capacity and cheaper materials. PP and PU blended load-bearing casters have the advantages of both.

[0003] The Chinese authorized announcement number is CN216993766U, and the patent is called a caster. The device includes a fixing component, a mounting component, and a bolt. The fixing component includes a fixing base connected to the bottom surface of the loading platform and a front slot provided at the front of the bottom surface of the fixing base. The opening of the front slot faces backward, and the rear of the fixing base is provided with a threaded hole. The mounting component includes a mounting base, a front insert connected to the front side of the mounting base and used to extend into the front slot, and a caster body rotatably connected to the mounting base. The rear of the mounting base is provided with a through hole corresponding to the threaded hole. The bolt passes through the through hole and is threadedly connected to the threaded hole. Compared with the existing casters that are fixed with more than three bolts, the entire process of replacing the mounting component of the caster in this utility model only requires one bolt. The number of bolts is reduced, and fewer bolts are worn, which reduces the risk of caster failure.

[0004] Although the above device can reduce the risk of caster failure, there are still some problems when using the device:

[0005] 1. The device does not have a cleaning mechanism and cannot clean the particles or debris adhering to the caster, resulting in faster wear during the rolling process of the caster.

[0006] 2. The device does not have a shock-absorbing mechanism. When the device passes through an uneven ground, the device and the items carried by the device will be subjected to strong vibration and impact, causing the device to be easily damaged.

[0007] In view of the above situation, technical innovation is carried out on the basis of the existing casters. Utility Model Content

[0008] The purpose of the utility model is to provide a load-bearing caster to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a load-bearing caster, comprising a wheel cover and a roller, a swivel block is provided on the inner rear wall of the wheel cover, and the swivel block is rotatably connected to the wheel cover, a threaded hole is provided on the inner side of the swivel block, and a Velcro is provided on the bottom end of the swivel block, a cleaning cotton block is provided on the bottom end of the Velcro, a slide groove is provided on the inner side of the front wall of the wheel cover, and a hand screw is provided on the inner side of the slide groove, the roller is fixed to the inner bottom end of the wheel cover, and the roller is rotatably connected to the wheel cover.

[0010] Furthermore, a rotating bracket is fixed to the top of the wheel cover, and a connecting plate is fixed to the top of the rotating bracket.

[0011] Furthermore, a telescopic cover is fixed to the middle part of the top end of the connecting plate, and a shock-absorbing airbag is arranged on the inner side of the telescopic cover.

[0012] Furthermore, damping rods are fixed on both left and right sides of the top end of the connecting plate, and shock-absorbing springs are arranged outside the damping rods.

[0013] Furthermore, a mounting plate is fixed to the top of the telescopic cover, and the mounting plate and the telescopic cover are fixed by welding.

[0014] Furthermore, both left and right ends of the mounting plate are provided with fixing components, and the fixing components include fixing screws and elastic gaskets, and the outside of the fixing screws is provided with elastic gaskets.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the device is provided with a cleaning mechanism, which can clean the sand, debris and the like adhering to the wheels during use, which not only improves the cleanliness of the device, but also reduces the wear of the device, which is beneficial to improving the practicality of the device; at the same time, the device is provided with a shock absorbing mechanism, which can absorb the impact force exerted on the device, reduce the vibration exerted on the device and the items carried by the device, and is beneficial to improving the service life of the device.

[0016] 1. The utility model arranges a rotating block, a threaded hole, a Velcro, a cleaning cotton block, a slide groove and a hand screw. The cleaning cotton block contacts the roller. When the roller rotates, the roller can sweep away sand, debris and dust adhered to the outside of the roller, thereby preventing the roller from being worn due to being stained with hard particles during rolling. The threaded rod of the hand screw is threadedly connected to the threaded hole, which can limit the rotating block. When the cleaning cotton block is worn, the user can loosen the hand screw and slide the hand screw down along the slide groove. At this time, the rotating block rotates ninety degrees, and the cleaning cotton block faces the outside of the device. The user can tear off the cleaning cotton block through the Velcro and replace it with a new cleaning cotton block. Through the above structure, the device can clean sand, debris and the like adhered to the wheel during use, which not only improves the cleanliness of the device, but also reduces the wear of the device, which is conducive to improving the practicality of the device.

[0017] 2. The utility model is provided with a telescopic cover, a shock-absorbing airbag, a damping rod and a shock-absorbing spring. When the device passes through an uneven ground, the shock-absorbing airbag, the damping rod and the shock-absorbing spring will all contract and stretch according to the ups and downs of the ground, thereby absorbing the vibration kinetic energy generated by the uneven ground and reducing the vibration impact force exerted on the device. The damping rod can prevent the shock-absorbing spring from generating excessive rebound impact force, making the shock absorption process smoother. Through the above structure, the impact force exerted on the device can be absorbed, reducing the vibration exerted on the device and the items carried by the device, which is conducive to increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural diagram of a load-bearing caster of the utility model;

[0019] Figure 2 It is a partial front view and cross-sectional enlarged structural schematic diagram of a wheel cover, a rotating block, a threaded hole, a Velcro, a cleaning cotton block and a roller of a load-bearing caster of the utility model;

[0020] Figure 3 It is a partial front view and cross-sectional enlarged structural schematic diagram of a connecting plate, a telescopic cover, a shock-absorbing airbag, a damping rod shock-absorbing spring and a mounting plate of a load-bearing caster of the utility model.

[0021] In the figure: 1. wheel cover; 2. rotating block; 3. threaded hole; 4. Velcro; 5. cleaning cotton block; 6. slide groove; 7. hand screw; 8. roller; 9. rotating bracket; 10. connecting plate; 11. telescopic cover; 12. shock-absorbing airbag; 13. damping rod; 14. shock-absorbing spring; 15. mounting plate; 16. fixing assembly; 1601, fixing screw; 1602, elastic gasket. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] like Figure 1 and Figure 2 As shown, a load-bearing caster comprises a wheel cover 1 and a roller 8, a rotating block 2 is arranged on the inner rear wall of the wheel cover 1, and the rotating block 2 is rotatably connected to the wheel cover 1, a threaded hole 3 is arranged on the inner side of the rotating block 2, and a Velcro 4 is arranged on the bottom end of the rotating block 2, and a cleaning cotton block 5 is arranged on the bottom end of the Velcro 4, a slide groove 6 is arranged on the inner side of the front wall of the wheel cover 1, and a hand screw 7 is arranged on the inner side of the slide groove 6, the roller 8 is fixed to the inner bottom end of the wheel cover 1, and the roller 8 is rotatably connected to the wheel cover 1, and the cleaning cotton block 5 is in contact with the roller 8, and when the roller 8 rotates, the roller 8 can sweep away the gravel, debris and dust adhering to the outside of the roller 8, thereby preventing the roller 8 from rolling. During the process, the cleaning cotton block 5 is worn out due to being stained with hard particles. The threaded rod of the hand screw 7 is threadedly connected to the threaded hole 3, which can limit the rotating block 2. When the cleaning cotton block 5 is worn, the user can loosen the hand screw 7 and slide the hand screw 7 downward along the slide groove 6. At this time, the rotating block 2 rotates ninety degrees, and the cleaning cotton block 5 faces the outside of the device. The user can tear off the cleaning cotton block 5 through the Velcro 4 and replace it with a new cleaning cotton block 5. Through the above structure, the device can clean sand, debris, etc. adhered to the wheel during use, which not only improves the cleanliness of the device, but also reduces the wear of the device, which is conducive to improving the practicality of the device.

[0026] like Figure 1 and Figure 3As shown, a rotating bracket 9 is fixed to the top of the wheel cover 1, and a connecting plate 10 is fixed to the top of the rotating bracket 9, a telescopic cover 11 is fixed to the middle of the top of the connecting plate 10, and a shock-absorbing airbag 12 is arranged on the inner side of the telescopic cover 11, damping rods 13 are fixed to the left and right sides of the top of the connecting plate 10, and a shock-absorbing spring 14 is arranged on the outside of the damping rod 13, a mounting plate 15 is fixed to the top of the telescopic cover 11, and the mounting plate 15 and the telescopic cover 11 are welded and fixed, and a fixing assembly 16 is arranged on the left and right ends of the mounting plate 15, and the fixing assembly 16 includes a fixing screw 1601 and an elastic gasket 1602 An elastic gasket 1602 is arranged outside the fixing screw 1601. When the device passes through an uneven ground, the shock-absorbing airbag 12, the damping rod 13 and the shock-absorbing spring 14 will all shrink and stretch according to the ups and downs of the ground, thereby absorbing the vibration kinetic energy generated by the uneven ground and reducing the vibration impact force on the device. The damping rod 13 can prevent the shock-absorbing spring 14 from generating excessive rebound impact force, making the shock absorption process smoother. Through the above structure, the impact force on the device can be absorbed, and the vibration of the device and the items carried by the device can be reduced, which is beneficial to improving the service life of the device.

[0027] In summary: when using the load-bearing caster, firstly, the roller 8 is made of a blend of PP and PU. The user can fix the device to the bottom of the device or the bottom of the cart through the mounting plate 15 and the fixing assembly 16. The roller 8 can save time and effort in moving the device or the cart. The rotating bracket 9 allows the device to rotate horizontally to achieve universal movement. The cleaning cotton block 5 is in contact with the roller 8. When the roller 8 rotates, the roller 8 can sweep away the gravel, debris and dust adhered to the outside of the roller 8, thereby preventing the roller 8 from being worn due to the hard particles during the rolling process. The threaded rod of the hand screw 7 is threadedly connected to the threaded hole 3, which can limit the rotating block 2. When the cleaning cotton block When the hand screw 5 is worn, the user can loosen the hand screw 7 and slide the hand screw 7 downward along the slide groove 6. At this time, the rotating block 2 rotates ninety degrees, and the cleaning cotton block 5 faces the outside of the device. The user can tear off the cleaning cotton block 5 through the Velcro 4 and replace it with a new cleaning cotton block 5. When the device passes over an uneven ground, the shock-absorbing airbag 12, the damping rod 13, and the shock-absorbing spring 14 will all shrink and stretch according to the ups and downs of the ground, thereby absorbing the vibration kinetic energy generated by the uneven ground and reducing the vibration impact force on the device. The damping rod 13 can prevent the shock-absorbing spring 14 from generating excessive rebound impact force, making the shock absorption process smoother. This is the working principle of the load-bearing caster.

[0028] The above are only preferred embodiments of the utility model, and do not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A load-bearing caster, comprising a wheel cover (1) and a roller (8), characterized in that: A rotating block (2) is arranged on the inner rear wall of the wheel cover (1), and the rotating block (2) is rotatably connected to the wheel cover (1); a threaded hole (3) is arranged on the inner side of the rotating block (2), and a Velcro (4) is arranged on the bottom end of the rotating block (2); a cleaning cotton block (5) is arranged on the bottom end of the Velcro (4); a sliding groove (6) is arranged on the inner side of the front wall of the wheel cover (1), and a hand screw (7) is arranged on the inner side of the sliding groove (6); the roller (8) is fixed to the inner bottom end of the wheel cover (1), and the roller (8) is rotatably connected to the wheel cover (1).

2. A load-bearing caster according to claim 1, characterized in that: A rotating bracket (9) is fixed to the top of the wheel cover (1), and a connecting plate (10) is fixed to the top of the rotating bracket (9).

3. A load-bearing caster according to claim 2, characterized in that: A telescopic cover (11) is fixed to the middle of the top end of the connecting plate (10), and a shock-absorbing airbag (12) is arranged on the inner side of the telescopic cover (11).

4. A load-bearing caster according to claim 2, characterized in that: Damping rods (13) are fixed on both left and right sides of the top end of the connecting plate (10), and shock absorbing springs (14) are arranged outside the damping rods (13).

5. The load-bearing caster according to claim 3, characterized in that: A mounting plate (15) is fixed to the top end of the telescopic cover (11), and the mounting plate (15) and the telescopic cover (11) are fixed by welding.

6. The load-bearing caster according to claim 5, characterized in that: The left and right ends of the mounting plate (15) are both provided with fixing components (16), and the fixing components (16) include fixing screws (1601) and elastic gaskets (1602), and the outside of the fixing screws (1601) is provided with elastic gaskets (1602).

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