Load-carrying wheel with wear-resistant sleeve convenient to replace

Abstract

The utility model discloses a load-carrying wheel with a wear-resistant sleeve convenient to replace, which belongs to the technical field of load-carrying wheels and comprises a wheel shaft, a neck bush rotatably sleeved on the wheel shaft, the wear-resistant sleeve sleeved on the neck bush and a stopper mounted on the end face of one side of the neck bush, one end of the wear-resistant sleeve extends inwards along the radial direction to form a retainer ring, and the other end of the wear-resistant sleeve is sleeved on the retainer ring. An arc-shaped plate is convexly arranged on the baffle ring in the axial direction of the wear-resistant sleeve, an arc-shaped groove is formed in the side wall of one end of the neck bush, the wear-resistant sleeve can drive the arc-shaped plate to slide in the arc-shaped groove in a matched mode when rotating relative to the neck bush, a clamping groove is formed in the arc-shaped plate, a clamping protrusion is convexly arranged on the groove wall of the arc-shaped groove, and the clamping protrusion and the clamping groove can be mutually clamped. And the baffle ring is clamped between the stop piece and the end face of the neck bush. According to the loading wheel with the wear-resistant sleeve convenient to replace, the neck bush and the wear-resistant sleeve can be disassembled and assembled by a user through simple rotating, inserting and pulling actions, the user can replace the wear-resistant sleeve conveniently, and the replacement efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of load wheels, in particular to a load wheel with a wear-resistant sleeve that is convenient to replace. Background Art

[0002] With the continuous acceleration of modern automated production process, AGV trolleys in intelligent transportation play an increasingly important role. As an important component of AGV trolleys, the working stability of load wheels directly determines whether the AGV trolley can run smoothly.

[0003] The load wheels on AGVs generally include an inner bushing and a wear-resistant sleeve. The wear-resistant sleeve is located on the outside of the inner bushing. The inner bushing is generally used to provide a certain structural strength to the load wheel to ensure that the load wheel does not deform, while the wear-resistant sleeve is used to contact the supporting surface. It has good wear resistance and can reduce wear on the load wheel. In traditional load wheel structures, the wear-resistant sleeve is bonded to the inner bushing through an adhesive layer. When the wear-resistant sleeve is severely worn due to long-term use, the wear-resistant sleeve needs to be replaced. However, since the wear-resistant sleeve and the inner bushing are fixed by adhesive, the user needs to remove the adhesive before removing the wear-resistant sleeve. The adhesive removal operation is cumbersome and inefficient, and the equipment cost is high, which greatly increases the user's maintenance cost.

[0004] Based on this, the inventors need to improve the structure of the load wheel to facilitate the replacement of the wear-resistant layer and reduce maintenance costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is that in the prior art, it is difficult to replace the wear-resistant sleeve after it is worn, and the efficiency is low. Based on this, the utility model provides a load wheel for efficiently replacing the wear-resistant sleeve.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a load-bearing wheel that is easy to replace a wear-resistant sleeve, comprising a wheel axle, an inner sleeve rotatably mounted on the wheel axle, a wear-resistant sleeve mounted on the inner sleeve and a stopper installed on the end face of one side of the inner sleeve, one end of the wear-resistant sleeve extending radially inward to form a retaining ring, an arc-shaped plate is protruded on the retaining ring along the axial direction of the wear-resistant sleeve, an arc-shaped groove is provided on the side wall of one end of the inner sleeve, and when the wear-resistant sleeve rotates relative to the inner sleeve, the arc-shaped plate can be driven to slide in the arc-shaped groove, a clamping groove is provided on the arc-shaped plate, and a clamping protrusion is protruded on the groove wall of the arc-shaped groove, the clamping protrusion can be engaged with the clamping groove, and the retaining ring is clamped between the stopper and the end face of the inner sleeve.

[0007] Furthermore, the wear-resistant sleeve is coaxially arranged with the inner sleeve, the center of the arc groove is located on the central axis of the inner sleeve, the center of the arc plate is located on the central axis of the wear-resistant sleeve, and the groove width of the arc groove is the same as the thickness of the arc plate.

[0008] Furthermore, there are two arc-shaped grooves that are arranged opposite to each other, there are two arc-shaped plates, and one arc-shaped plate is matched and connected with one arc-shaped groove.

[0009] Furthermore, a connecting sleeve is protruded on the end surface of one side of the inner sleeve along the axial direction of the inner sleeve, the connecting sleeve is coaxially arranged with the inner sleeve, and the stopper is detachably mounted on the connecting sleeve.

[0010] Furthermore, an external thread is provided on the outer wall of the connecting sleeve, and the stopper is a nut threadably connected to the external thread.

[0011] Furthermore, a bearing is installed in the inner sleeve, the outer ring of the bearing is fixedly embedded on the inner wall of the inner sleeve, and the inner ring of the bearing is fixedly sleeved on the outside of the wheel axle.

[0012] Furthermore, there are two bearings, and the two bearings are respectively located on two opposite sides of the inner sleeve.

[0013] Furthermore, the inner diameter of the inner ring of the connecting sleeve is larger than the outer ring of the bearing, and the outer diameter of the outer ring of the connecting sleeve is smaller than the inner diameter of the retaining ring.

[0014] Furthermore, the inner sleeve is made of metal material.

[0015] Furthermore, the wear-resistant sleeve is made of polyurethane material.

[0016] The beneficial effects of the present invention are as follows: compared with the traditional method of fixing the wear-resistant sleeve to the outside of the inner sleeve by gluing, the load wheel of the present invention is easy to replace the wear-resistant sleeve. The user can realize the disassembly and assembly function between the inner sleeve and the wear-resistant sleeve through simple rotation and plugging and pulling actions, which is beneficial for the user to replace the wear-resistant sleeve and greatly improves the replacement efficiency. At the same time, the cooperation between the clamping protrusion and the clamping groove and the limiting effect of the stopper on the retaining ring ensure the connection stability between the wear-resistant sleeve and the inner sleeve, which is convenient for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional diagram of the load wheel of the utility model that is easy to replace the wear-resistant sleeve;

[0019] Figure 2 yes Figure 1 A perspective view of a load wheel from another angle showing the ease of replacing the wear-resistant sleeve;

[0020] Figure 3 yes Figure 1The front view of the load wheel is shown to facilitate the replacement of the wear-resistant sleeve;

[0021] Figure 4 yes Figure 3 The cross-sectional view of the load wheel along AA is shown to facilitate the replacement of the wear-resistant sleeve;

[0022] Figure 5 yes Figure 1 The exploded view of the load wheel is shown to facilitate the replacement of the wear sleeve;

[0023] Figure 6 yes Figure 5 The enlarged view of the part B of the load wheel is shown to facilitate the replacement of the wear-resistant sleeve;

[0024] Figure 7 yes Figure 1 A partially exploded view of the load wheel from another angle, which facilitates the replacement of the wear-resistant sleeve;

[0025] Figure 8 yes Figure 7 The figure shows a partial enlarged view of the C part of the load wheel for easy replacement of the wear-resistant sleeve.

[0026] In the figure: 1, axle, 2, inner sleeve 21, arc groove, 211, clamping protrusion, 22, connecting sleeve, 3, wear-resistant sleeve, 31, retaining ring, 32, arc plate, 321, clamping groove, 301, chamfer, 4, stopper, 5, bearing. DETAILED DESCRIPTION

[0027] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0028] See also Figures 1-8 The utility model provides a load wheel which is easy to replace the wear-resistant sleeve, comprising a wheel axle 1, an inner sleeve 2, a wear-resistant sleeve 3 and a stopper 4. The inner sleeve 2 is rotatably sleeved on the wheel axle 1, and the wear-resistant sleeve 3 is sleeved on the outside of the inner sleeve 2. One end of the wear-resistant sleeve 3 extends radially inward to form a retaining ring 31. An arc-shaped plate 32 is protruded on the retaining ring 31 along the axial direction of the wear-resistant sleeve 3. An arc groove 21 is opened on the side wall of one end of the inner sleeve 2. The arc The arc length of the arc groove 21 is greater than the arc length of the arc plate 32. When the wear-resistant sleeve 3 rotates relative to the inner sleeve 2, the arc plate 32 can be driven to slide in the arc groove 21. A card groove 321 is provided on the arc plate 32, and a card protrusion 211 is convexly provided on the groove wall of the arc groove 21. The card protrusion 211 can be engaged with the card groove 321. The stopper 4 is installed on the end face of one side of the inner sleeve 2, and the retaining ring 31 is clamped between the stopper 4 and the end face of the inner sleeve 2.

[0029] The utility model is convenient for replacing the load wheel of the wear-resistant sleeve. When installing the wear-resistant sleeve 3, the wear-resistant sleeve 3 is first sleeved on the inner sleeve 2 from one side of the inner sleeve 2, and the arc plate 32 is inserted into the arc groove 21. Then, the wear-resistant sleeve 3 is rotated relative to the inner sleeve 2, driving the arc plate 32 to rotate in the arc groove 21. When the cam 211 contacts the arc plate 32, the user continues to rotate the wear-resistant sleeve 3. After the end of one side of the wear-resistant sleeve 3 is deformed, the groove 321 and the cam 211 are engaged with each other. At this time, under the matching relationship between the groove 321 and the cam 211, the wear-resistant sleeve 3 is locked on the inner sleeve 2, so that the two remain relatively fixed. Then, the stopper 4 is installed on one side of the inner sleeve 2, and the baffle 31 is clamped between the stopper 4 and the end face of the inner sleeve 2. In this way, the wear-resistant sleeve 3 is limited to move in the axial direction, further ensuring the stable connection between the wear-resistant sleeve 3 and the inner sleeve 2.

[0030] When the wear-resistant sleeve 3 needs to be replaced due to severe wear, the stopper 4 is first removed, and then the wear-resistant sleeve 3 is rotated in the opposite direction relative to the inner sleeve 2 to disengage the locking protrusion 211 from the locking groove 321. At this time, the user can axially pull the wear-resistant sleeve 3 out of the inner sleeve 2. Compared with traditional load wheels, the present invention does not require debonding. The inner sleeve 2 and the wear-resistant sleeve 3 can be disassembled and assembled by rotating and plugging. This greatly reduces the difficulty of disassembly and assembly, facilitates operation, and reduces maintenance costs.

[0031] In this embodiment, the inner bushing 2 is a cylindrical structure with two through-holes. It is made of a metal material, such as stainless steel. The outer surface of the inner bushing 2 is polished to facilitate the smooth installation of the wear-resistant sleeve 3. A bearing 5 is mounted within the inner bushing 2. The outer ring of the bearing 5 is fixedly embedded in the inner wall of the inner bushing 2, and the inner ring of the bearing 5 is fixedly mounted on the exterior of the wheel axle 1. Furthermore, two bearings 5 are provided, one on each opposite side of the inner bushing 2, thereby providing more stable support for the inner bushing 2.

[0032] The wear-resistant sleeve 3 is generally cylindrical and is made of polyurethane. Polyurethane has high strength and wear resistance, and can remain stable under various stress environments. It also has good corrosion resistance and weather resistance, and can resist the erosion of acidic and alkaline chemicals, ensuring the continued normal use of the wear-resistant sleeve 3. In addition, the wear-resistant sleeve 3, the retaining ring 31, and the curved plate 32 are integrally formed. Therefore, the curved plate 32 made of polyurethane can deform under the action of external force, thereby causing the locking protrusion 211 and the locking groove 321 to engage with each other.

[0033] As a preferred embodiment, a chamfer 301 is provided on the inner wall of the wear-resistant sleeve 3 at one end away from the retaining ring 31. The setting of the chamfer 301 increases the opening size of the wear-resistant sleeve 3 on the side away from the retaining ring 31, which is convenient for the user to quickly put the wear-resistant sleeve 3 on the outside of the inner sleeve 2 from the side with the chamfer 301.

[0034] The wear-resistant sleeve 3 is coaxially arranged with the inner sleeve 2 and cooperates with each other. The inner and outer walls of the wear-resistant sleeve 3 are polished. When the wear-resistant sleeve 3 is mounted on the inner sleeve 3, the inner wall of the wear-resistant sleeve 3 fits with the outer wall of the inner sleeve 2 to ensure that the wear-resistant sleeve 3 will not move due to the gap between it and the inner sleeve 2.

[0035] The center of the arcuate groove 21 is located on the central axis of the inner sleeve 2, and the center of the arcuate plate 32 is located on the central axis of the wear-resistant sleeve 3. The width of the arcuate groove 21 is the same as the thickness of the arcuate plate 32. In this way, when the wear-resistant sleeve 3 rotates relative to the inner sleeve 2, the arcuate plate 32 can rotate within the arcuate groove 21. In this embodiment, there are two arcuate grooves 21 and they are arranged opposite each other. There are also two arcuate plates 32, and one arcuate plate 32 is connected to each arcuate groove 21. By providing two arcuate plates 32, the forces on both sides of the wear-resistant sleeve 3 are balanced, which is conducive to the structural stability of the wear-resistant sleeve 3.

[0036] In this embodiment, a connecting sleeve 22 is provided on the end surface of one side of the inner sleeve 2 along the axial direction of the inner sleeve 2. The inner ring inner diameter of the connecting sleeve 22 is larger than the outer ring of the bearing 5, and the outer ring outer diameter of the connecting sleeve 22 is smaller than the inner diameter of the retaining ring 31. The connecting sleeve 22 is a sleeve-shaped structure with both ends through. The connecting sleeve 22 is coaxially arranged with the inner sleeve 2, and the stopper 4 is detachably mounted on the connecting sleeve 22. In a specific embodiment, an external thread is provided on the outer wall of the connecting sleeve 22, and the stopper 4 is a nut that is threadedly connected to the external thread of the connecting sleeve 22. The user can disassemble and assemble the stopper 4 by turning the nut, which is simple and quick to operate.

[0037] The load wheel of the present invention is easy to replace the wear-resistant sleeve. Compared with the traditional method of fixing the wear-resistant sleeve 3 to the outside of the inner sleeve 2 by gluing, the user can realize the disassembly and assembly function between the inner sleeve 2 and the wear-resistant sleeve 3 through simple rotation and plugging and pulling actions, which is beneficial for the user to replace the wear-resistant sleeve 3 and greatly improves the replacement efficiency. At the same time, the cooperation between the protrusion 211 and the groove 321 and the limiting effect of the stop member 4 on the retaining ring 31 ensure the connection stability between the wear-resistant sleeve 3 and the inner sleeve 2, which is convenient for promotion and use.

[0038] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A load wheel with easy replacement of wear-resistant sleeve, characterized by: The wheel shaft comprises an axle, an inner sleeve rotatably mounted on the axle, a wear-resistant sleeve mounted on the inner sleeve, and a stopper installed on the end face of one side of the inner sleeve, one end of the wear-resistant sleeve extends radially inward to form a retaining ring, an arc-shaped plate is provided on the retaining ring along the axial direction of the wear-resistant sleeve, an arc-shaped groove is provided on the side wall of one end of the inner sleeve, and the wear-resistant sleeve can drive the arc-shaped plate to slide in the arc-shaped groove when it rotates relative to the inner sleeve, a clamping groove is provided on the arc-shaped plate, and a clamping protrusion is provided on the groove wall of the arc-shaped groove, the clamping protrusion can be engaged with the clamping groove, and the retaining ring is clamped between the stopper and the end face of the inner sleeve.

2. The load wheel with easy replacement of wear-resistant sleeve according to claim 1, characterized in that: The wear-resistant sleeve is coaxially arranged with the inner sleeve, the center of the arc groove is located on the central axis of the inner sleeve, the center of the arc plate is located on the central axis of the wear-resistant sleeve, and the groove width of the arc groove is the same as the thickness of the arc plate.

3. The load wheel with easy-to-replace wear-resistant sleeve according to claim 2, characterized in that: There are two arc-shaped grooves that are arranged opposite to each other, there are two arc-shaped plates, and one arc-shaped plate is matched and connected with one arc-shaped groove.

4. The load wheel with easy-to-replace wear-resistant sleeve according to claim 1, characterized in that: A connecting sleeve is provided on the end surface of one side of the inner sleeve along the axial direction of the inner sleeve. The connecting sleeve is coaxially arranged with the inner sleeve, and the stopper is detachably mounted on the connecting sleeve.

5. The load wheel with easy-to-replace wear-resistant sleeve according to claim 4, characterized in that: An external thread is provided on the outer wall of the connecting sleeve, and the stopper is a nut threadably connected to the external thread.

6. The load wheel with easy-to-replace wear-resistant sleeve according to claim 4, characterized in that: A bearing is installed in the inner sleeve, the outer ring of the bearing is fixedly embedded on the inner wall of the inner sleeve, and the inner ring of the bearing is fixedly sleeved on the outside of the wheel shaft.

7. The load wheel with easy-to-replace wear-resistant sleeve according to claim 6, characterized in that: There are two bearings, and the two bearings are respectively located on two opposite sides of the inner sleeve.

8. The load wheel with easy-to-replace wear-resistant sleeve according to claim 6, characterized in that: The inner diameter of the inner ring of the connecting sleeve is larger than the outer ring of the bearing, and the outer diameter of the outer ring of the connecting sleeve is smaller than the inner diameter of the retaining ring.

9. The load wheel with easy-to-replace wear-resistant sleeve according to claim 1, characterized in that: The inner bushing is made of metal material.

10. The load wheel with easy-to-replace wear-resistant sleeve according to claim 6, characterized in that: The wear-resistant sleeve is made of polyurethane material.

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