Mute trolley wheel

Abstract

The utility model relates to the technical field of wheels, and discloses a mute trolley wheel which comprises a wheel body, a connecting sleeve is arranged at the upper end of an outer cover, a cover plate is fixedly installed at the upper end of the outer cover, a cleaning structure is arranged at the lower end of the cover plate, and the cleaning structure comprises a rotating sleeve, a screw rod, a bearing, a connecting cylinder, an inclined sliding block, an extrusion spring and a scraping plate. The scraping plate is arranged for cleaning the surface of the wheel body, so that impurities on the surface of the wheel body can be cleaned by making contact with the scraping plate when the wheel body moves, and the situation that due to the impurities, the stability of the wheel body is poor after the wheel body is used for a long time, and consequently sound is generated is avoided; and when some impurities which cannot be cleaned appear on the surface of the wheel body, the impurities can also extrude the side wall of a scraping plate to a certain degree to enable the scraping plate to move upwards to extrude an extrusion spring, so that the scraping plate is prevented from being damaged, and the using effect of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheels, in particular to a silent cart wheel. Background Art

[0002] A handcart is a transport vehicle that is pushed and pulled by manpower. It is the ancestor of all vehicles. Although the material handling technology of handcarts is constantly developing, handcarts are still used as an indispensable transport tool. When the wheels of handcarts are used, the joints are prone to loosening, generating noise, and the wheels are prone to balance problems after long-term use and wear.

[0003] For example, a silent trolley wheel disclosed in announcement number CN214874018U facilitates the replacement of rubber wheels, avoids the problem of the rubber wheels needing to be replaced as a whole after long-term wear, and reduces cost investment. The roller and the limit cover are snap-connected, and the roller and the bearing are sleeve-connected. When the brake is pressed down, it is in contact with the rubber wheel. Timely replacement of the rubber wheel can effectively avoid the problem of poor braking performance.

[0004] However, when the wheel is in use, the brake can only be limited by pressing the brake inward. However, when the wheel passes through a muddy road, a large amount of impurities will stick to its surface. These impurities will cause the wheel to be unstable during long-term use, resulting in noise. In addition, these impurities will prevent the brake from moving to limit the wheel, thereby affecting the use of the device. In view of this, we propose a silent trolley wheel. Utility Model Content

[0005] The purpose of the utility model is to provide a silent trolley wheel to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silent trolley wheel, comprising a wheel body, an outer cover is arranged outside the wheel body, the outer cover is connected to the wheel body through a rotating shaft, a connecting sleeve is arranged at the upper end of the outer cover, a cover plate is fixedly installed at the upper end of the outer cover, a cleaning structure is arranged at the lower end of the cover plate, and the cleaning structure comprises:

[0007] A rotating sleeve, the rotating sleeve is fixedly mounted on the upper end of the cover plate, a screw is threadedly connected inside the rotating sleeve, a bearing is rotatably connected to the lower end of the screw, and a connecting sleeve is fixedly mounted on the lower end of the bearing;

[0008] An inclined sliding block is slidably connected to both sides of the inner wall of the connecting cylinder. An extrusion spring is fixedly installed on the inner wall of the connecting cylinder. A scraper is fixedly installed on the lower end of the extrusion spring. A limiting mechanism is arranged inside the connecting cylinder.

[0009] Preferably, the limiting mechanism includes sliding grooves opened on both sides of the inner wall of the connecting tube, a sliding rod is fixedly installed on the inner wall of the sliding groove, a connecting block is slidably connected to the surface of the sliding rod, a reset spring is arranged on the surface of the sliding rod, the lower end of the connecting block is fixedly connected to the upper end of the inclined sliding block, sliding blocks are slidably connected to both sides of the inner wall of the connecting tube, a brake frame is fixedly installed on the lower end of the sliding block, one end of the connecting rod is hinged to the upper end of the brake frame, and the other end of the connecting rod is hinged to the lower end of the inclined sliding block.

[0010] Preferably, a plurality of sets of anti-slip sheets are fixedly mounted on the inner wall of the brake frame.

[0011] Preferably, the extrusion springs are provided in multiple groups, and the other ends of the multiple groups of extrusion springs are fixedly connected to the inner wall of the connecting tube.

[0012] Preferably, one end of the return spring is fixedly connected to the inner wall of the slide groove, and the other end of the return spring is fixedly connected to the side wall of the connecting block.

[0013] Preferably, an arc-shaped groove is formed at the lower end of the scraper and matches the diameter of the wheel body, and a handle is fixedly mounted at the upper end of the screw.

[0014] Compared with the prior art, the utility model provides a silent trolley wheel, which has the following beneficial effects:

[0015] 1. The silent trolley wheel is provided with a cleaning structure to facilitate cleaning of dirt and impurities adhered to the surface of the wheel body. After passing through a muddy road section, the user can drive the connecting tube to move downward by rotating the screw. At this time, the connecting tube moves downward to drive the scraper inside it to contact the surface of the wheel body. When the wheel body moves, it will contact the scraper to clean the impurities on its surface, thereby avoiding these impurities causing the wheel body to be unstable during long-term use and causing noise.

[0016] 2. The silent trolley wheel is provided with a limit mechanism to facilitate the limiting and fixing of the wheel body. When the user needs to limit the wheel body, the user can continue to rotate the screw, and the screw drives the scraper to move upward through extrusion. The upward movement of the scraper drives the two groups of inclined sliders to move to both sides, and then drives the two groups of brake parts to move downward to clamp and limit the surface of the wheel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the sectional three-dimensional structure of the utility model;

[0019] Figure 3This is a schematic diagram of the cross-sectional three-dimensional structure of the connecting tube of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the brake frame of the utility model from a side view;

[0021] Figure 5 This is an enlarged structural diagram of part A of the utility model;

[0022] Figure 6 This is an enlarged structural diagram of part B of the utility model.

[0023] In the figure: 1. wheel body; 2. outer cover; 3. cleaning structure; 4. limiting mechanism; 5. connecting sleeve; 6. cover plate; 7. anti-skid sheet; 8. handle; 31. rotating sleeve; 32. screw; 33. bearing; 34. connecting tube; 35. oblique slider; 36. extrusion spring; 37. scraper; 41. slide groove; 42. slide rod; 43. connecting block; 44. sliding block; 45. brake frame; 46. connecting rod; 49. reset spring. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a silent trolley wheel, comprising a wheel body 1, an outer cover 2 is arranged on the outer side of the wheel body 1, the outer cover 2 is connected to the wheel body 1 through a rotating shaft, a connecting sleeve 5 is arranged on the upper end of the outer cover 2, a cover plate 6 is fixedly installed on the upper end of the outer cover 2, a cleaning structure 3 is arranged on the lower end of the cover plate 6, the cleaning structure 3 comprises a rotating sleeve 31 fixedly installed on the upper end of the cover plate 6, a screw rod 32 is threadedly connected to the inner part of the rotating sleeve 31, a bearing 33 is rotatably connected to the lower end of the screw rod 32, a connecting cylinder 34 is fixedly installed on the lower end of the bearing 33, an oblique slider 35 is slidably connected to both sides of the inner wall of the connecting cylinder 34, an extrusion spring 36 is fixedly installed on the inner wall of the connecting cylinder 34, a scraper 37 is fixedly installed on the lower end of the extrusion spring 36, and a limiting mechanism 4 is arranged inside the connecting cylinder 34.

[0025] Specifically, the cleaning structure 3 of the technical solution of the utility model includes: a rotating sleeve 31, a screw 32, a bearing 33, a connecting tube 34, an inclined sliding block 35, a squeezing spring 36, and a scraper 37.

[0026] In one embodiment of the present invention, a cleaning structure 3 is provided to facilitate cleaning of dirt and impurities adhered to the surface of the wheel body 1. The device is moved by the wheel body 1 and connected to the vehicle body through the connecting sleeve 5. When the device has passed through a muddy section during use, the user can drive the screw 32 to rotate by turning the handle 8. The handle 8 is provided to increase the gripping area, thereby facilitating the user to rotate the screw 32. At this time, the screw 32 rotates inside the rotating sleeve 31 to move downward, and the downward movement of the screw 32 drives the connecting tube 34 to move downward. At this time, the downward movement of the connecting tube 34 drives the scraper 37 inside it and The wheel body 1 is in contact with the surface of the wheel body 1, and a scraper 37 is provided to clean the surface of the wheel body 1. The lower end of the scraper 37 is set to an arc structure and is adapted to the diameter of the wheel body 1, so that when the wheel body 1 moves, it will contact the scraper 37 to clean the impurities on its surface, thereby avoiding these impurities causing the wheel body 1 to have poor stability during long-term use and causing noise, and when some impurities that cannot be cleaned appear on the surface of the wheel body 1, the impurities can also squeeze the side wall of the scraper 37 to a certain extent, causing it to move upward to squeeze the extrusion spring 36, thereby avoiding damage to the scraper 37, further improving the use effect of the device.

[0027] The limiting mechanism 4 is provided to facilitate the limiting and fixing of the wheel body 1. When the user needs to limit the wheel body 1, the user can continue to rotate the screw rod 32. At this time, the screw rod 32 drives the scraper 37 to continue to move downward. At this time, the scraper 37 will move upward by squeezing the wheel body 1. The upward movement of the scraper 37 will squeeze the two groups of inclined sliders 35. At this time, the two groups of inclined sliders 35 move to both sides, and the inclined slider 35 slides on the surface of the slide rod 42 through the connecting block 43 of its side wall, and the connecting block 43 will also squeeze the return spring 49 when it moves, so as to facilitate the subsequent return to the correct position. The inclined slider 35 will drive the connecting rod 46 of its side wall to move, and the movement of the connecting rod 46 will drive the sliding block 44 and the brake frame 45 hinged thereto to move downward, and then the surface of the wheel body 1 is clamped and limited by the downward movement of the two groups of brake frames 45, thereby improving the use effect of the device.

[0028] Please continue reading Figure 1-Figure 6The limiting mechanism 4 includes a slide groove 41 opened on both sides of the inner wall of the connecting tube 34, a slide rod 42 is fixedly installed on the inner wall of the slide groove 41, a connecting block 43 is slidably connected to the surface of the slide rod 42, a return spring 49 is arranged on the surface of the slide rod 42, the lower end of the connecting block 43 is fixedly connected to the upper end of the inclined slider 35, both sides of the inner wall of the connecting tube 34 are slidably connected to the sliding block 44, a brake frame 45 is fixedly installed on the lower end of the sliding block 44, and one end of the connecting rod 46 is hinged on the upper end of the brake frame 45, and the connection The other end of the rod 46 is hinged to the lower end of the inclined slider 35, and multiple groups of anti-slip sheets 7 are fixedly installed on the inner wall of the brake frame 45. Multiple groups of extrusion springs 36 are provided, and the other ends of the multiple groups of extrusion springs 36 are fixedly connected to the inner wall of the connecting tube 34. One end of the return spring 49 is fixedly connected to the inner wall of the slide groove 41, and the other end of the return spring 49 is fixedly connected to the side wall of the connecting block 43. The lower end of the scraper 37 is provided with an arc groove and is adapted to the diameter of the wheel body 1. A handle 8 is fixedly installed on the upper end of the screw rod 32.

[0029] During operation, when the device has passed through a muddy road section during use, the user can turn the handle 8 to drive the screw rod 32 to rotate, and the screw rod 32 rotates inside the rotating sleeve 31 to move downward, and the screw rod 32 moves downward to drive the connecting tube 34 to move downward. At this time, the connecting tube 34 moves downward to drive the scraper 37 inside it to contact the surface of the wheel body 1. When the wheel body 1 moves, it will contact the scraper 37 to clean the impurities on its surface. When some impurities that cannot be cleaned appear on the surface of the wheel body 1, the impurities can also squeeze the side wall of the scraper 37 to a certain extent, causing it to move upward to squeeze the squeezing spring 36, thereby avoiding damage to the scraper 37. When the wheel body 1 is limited, it can continue to rotate. The screw rod 32 is moved, and the screw rod 32 drives the scraper 37 to continue to move downward. At this time, the scraper 37 will move upward by squeezing the wheel body 1. The upward movement of the scraper 37 will squeeze the two groups of inclined sliders 35. At this time, the two groups of inclined sliders 35 move to both sides, and the inclined slider 35 slides on the surface of the slide rod 42 through the connecting block 43 of the side wall, and the return spring 49 is squeezed when the connecting block 43 moves. At this time, the inclined slider 35 will drive the connecting rod 46 of the side wall to move, and the movement of the connecting rod 46 will drive the sliding block 44 and the brake frame 45 hinged thereto to move downward, and then the surface of the wheel body 1 is clamped and limited by the downward movement of the two groups of brake frames 45, thereby further improving the practicality of the device.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A silent wheelbarrow, comprising a wheel body (1), an outer cover (2) is arranged outside the wheel body (1), the outer cover (2) is connected to the wheel body (1) through a rotating shaft, and a connecting sleeve (5) is arranged at the upper end of the outer cover (2), characterized in that: A cover plate (6) is fixedly mounted on the upper end of the outer cover (2), and a cleaning structure (3) is arranged at the lower end of the cover plate (6). The cleaning structure (3) comprises: A rotating sleeve (31), the rotating sleeve (31) is fixedly mounted on the upper end of the cover plate (6), a screw rod (32) is internally threadedly connected to the rotating sleeve (31), a bearing (33) is rotatably connected to the lower end of the screw rod (32), and a connecting cylinder (34) is fixedly mounted on the lower end of the bearing (33); An inclined sliding block (35) is slidably connected to both sides of the inner wall of the connecting tube (34); a squeezing spring (36) is fixedly installed on the inner wall of the connecting tube (34); a scraper (37) is fixedly installed on the lower end of the squeezing spring (36); and a limiting mechanism (4) is arranged inside the connecting tube (34).

2. A silent trolley wheel according to claim 1, characterized in that: The limiting mechanism (4) comprises a slide groove (41) provided on both sides of the inner wall of the connecting tube (34); a slide rod (42) is fixedly installed on the inner wall of the slide groove (41); a connecting block (43) is slidably connected to the surface of the slide rod (42); a return spring (49) is arranged on the surface of the slide rod (42); the lower end of the connecting block (43) is fixedly connected to the upper end of the inclined sliding block (35); sliding blocks (44) are slidably connected to both sides of the inner wall of the connecting tube (34); a brake frame (45) is fixedly installed on the lower end of the sliding block (44); one end of a connecting rod (46) is hinged to the upper end of the brake frame (45); and the other end of the connecting rod (46) is hinged to the lower end of the inclined sliding block (35).

3. A silent trolley wheel according to claim 2, characterized in that: A plurality of groups of anti-slip sheets (7) are fixedly mounted on the inner wall of the brake frame (45).

4. The silent trolley wheel according to claim 1, characterized in that: The extrusion springs (36) are provided in multiple groups, and the other ends of the multiple groups of extrusion springs (36) are fixedly connected to the inner wall of the connecting tube (34).

5. The silent trolley wheel according to claim 2, characterized in that: One end of the return spring (49) is fixedly connected to the inner wall of the slide groove (41), and the other end of the return spring (49) is fixedly connected to the side wall of the connecting block (43).

6. The silent trolley wheel according to claim 1, characterized in that: The scraper (37) has an arc-shaped groove at the lower end thereof and is adapted to the diameter of the wheel body (1), and a handle (8) is fixedly mounted at the upper end of the screw rod (32).

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