Trundle with replaceable tire

Abstract

The utility model discloses a trundle with a replaceable tire, which comprises a mounting bracket and a trundle body, the trundle body comprises a connecting shaft connected with the mounting bracket, the connecting shaft is sleeved in an inner hole of a rim, the outer curved surface of the rim is detachably sleeved with the tire, a plurality of limiting rods are arranged in the rim in a circumferential array manner, and the limiting rods are arranged in a radial sliding manner. The limiting rod is provided with an elastic piece, the elastic piece enables the limiting rod to keep the movement tendency of sliding towards the axis, one end of the limiting rod is used for abutting against the connecting shaft, and the other end of the limiting rod is used for being inserted into a limiting hole in the inner side of the tire. Due to the design that the tire can be independently replaced, the tire part of the trundle can be conveniently, economically and independently replaced after being abraded, the whole trundle assembly does not need to be replaced, unnecessary resource consumption can be remarkably reduced, the use experience of a user can be improved, the long-term maintenance cost is reduced, and the trundle assembly adapts to the change of market requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster with replaceable tires. Background Art

[0002] With the acceleration of industrialization and the booming logistics industry, casters, as an important part of transfer equipment, play an indispensable role in various application scenarios, from material handling on the production line to furniture movement in daily life. However, during long-term and frequent use, casters, especially the tread part that directly contacts the ground, face severe wear and tear. Due to the diversity of ground materials, uneven distribution of load, and chemical erosion in the use environment, the tread of casters is often the first part to be worn out.

[0003] In traditional caster designs, tires and metal hubs or supporting structures are mostly integrated or fixedly assembled. Although this structure ensures overall stability, it is not flexible and economical when facing tread wear problems. Once the tread is severely damaged to the point of affecting normal use, users have to replace the entire caster unit, which not only increases maintenance costs, but also wastes resources, because metal parts other than the tread, such as the axle and bracket, are usually still in good condition.

[0004] In addition, as society's awareness of sustainable development and resource recycling increases, how to extend product life and achieve convenient replacement of wearing parts has become the focus of the manufacturing industry. In this context, developing a caster design that can achieve separate tread replacement can not only significantly reduce unnecessary resource consumption, but also improve the user experience, reduce long-term maintenance costs, and adapt to changes in market demand. Therefore, designing an innovative structure that allows the tire part of the caster to be easily and economically replaced separately after wear, without having to replace the entire caster assembly, has become a technical challenge and innovation direction that needs to be solved urgently. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a caster with replaceable tires.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A caster with replaceable tires comprises a mounting bracket and a wheel body, wherein the wheel body comprises a connecting shaft connected to the mounting bracket, the connecting shaft is sleeved in the inner hole of the rim, the outer curved surface of the rim is detachably sleeved with the tire, a plurality of limit rods are arranged in an internal circumferential array of the rim, the limit rods are radially slidably arranged, and the limit rods are provided with elastic members, the elastic members enable the limit rods to maintain a sliding movement tendency toward the axis, one end of the limit rod is used to interfere with the connecting shaft, and the other end of the limit rod is used to be inserted into the limit hole inside the tire.

[0008] Furthermore, a fixing ring is provided between the rim and the connecting shaft, the fixing ring is fixedly connected to the rim, and the fixing ring is provided with a limiting portion, and the limiting portion is used to limit the sliding of the limiting rod.

[0009] Furthermore, the connecting shaft is provided with a recessed ring, the recessed ring is arranged on both sides of the limiting rod, and the recessed ring is provided with an inclined surface, and the inclined surface is arranged on a side close to the limiting rod.

[0010] Furthermore, ring gaps are provided on both sides of the fixing ring, bearings are provided in the ring gaps, the thickness of the bearings is greater than the depth of the ring gaps, and the connecting shaft is sleeved in the inner hole of the bearings.

[0011] Furthermore, a plurality of horizontal bars are arranged in a circumferential array on the outer curved surface of the rim, and a groove matching the horizontal bars is arranged on the inner side wall of the tire.

[0012] Furthermore, the outer side wall of the rim is provided with a plurality of slots in a circumferential array.

[0013] The beneficial effect of the utility model is that the design of the utility model that the tire can be replaced separately makes it possible for the tire part of the caster to be replaced conveniently and economically after being worn, without having to replace the entire caster assembly. This can not only significantly reduce unnecessary resource consumption, but also improve the user experience, reduce long-term maintenance costs, and adapt to changes in market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is one of the cross-sectional views of the utility model;

[0017] Figure 3 This is the second cross-sectional view of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the utility model without the mounting bracket and the tire. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Reference Figures 1 to 4 A caster with a replaceable tire 5 includes a mounting bracket 1 and a wheel body 2. The wheel body 2 includes a rim 3 and a connecting shaft 4 connected to the mounting bracket 1. The connecting shaft 4 is sleeved in the inner hole of the rim 3. In this embodiment, the rim 3 is made of metal material. The outer curved surface of the rim 3 is detachably sleeved with a tire 5, and a plurality of limiting holes are arranged on the inner side of the tire 5. A plurality of limiting rods 6 are arranged in a circumferential array inside the rim 3. The limiting rod 6 is radially slidably arranged, and the limiting rod 6 is provided with an elastic member 7, and the elastic member 7 enables the limiting rod 6 to maintain a movement tendency of sliding toward the axis. The elastic member 7 can be a tension spring or a compression spring. In this embodiment, the elastic member 7 is a compression spring, and the compression spring is arranged between the limiting rod 6 and the rim 3, so that the limiting rod 6 maintains a movement tendency of sliding toward the axis. One end of the limiting rod 6 is used to conflict with the connecting shaft 4, and the other end of the limiting rod 6 is inserted into the limiting hole inside the tire 5.

[0021] Method for replacing the tire 5: To install the tire 5, firstly, the tire 5 needs to be sleeved on the outer curved surface of the rim 3, and then the connecting shaft 4 is inserted into the inner hole of the rim 3, and the limiting rod 6 is pressed to slide in the peripheral direction, so that the other end of the limiting rod 6 is inserted into the limiting hole of the wheel body 2, thereby fixing the tire 5. Otherwise, the tire 5 is removed.

[0022] The design of the individually replaceable tire 5 in this embodiment allows the tire 5 of the caster to be easily and economically replaced after being worn, without having to replace the entire caster assembly. This can not only significantly reduce unnecessary resource consumption, but also improve the user experience, reduce long-term maintenance costs, and adapt to changes in market demand.

[0023] Furthermore, a fixing ring 8 is provided between the rim 3 and the connecting shaft 4, and the fixing ring 8 is fixedly connected to the rim 3. The fixing ring 8 is provided with a limiting portion, and the limiting portion is used to limit the sliding of the limiting rod 6. Specifically, the limiting portion is used to prevent the limiting rod 6 from being separated from the rim 3 when the connecting shaft 4 is pulled out. Such a design of this embodiment is more humane, and the limiting rod 6 will not be separated when disassembly is improper, and it is more convenient to use.

[0024] Furthermore, the connecting shaft 4 is provided with a recessed ring 9, which is arranged on both sides of the limiting rod 6, and the recessed ring 9 is provided with an inclined surface 10, which is arranged on a side close to the limiting rod 6. When the connecting shaft 4 is moved, the limiting rod 6 slides into the recessed ring 9, and the tire 5 can be removed; when the connecting shaft 4 is reset, the limiting rod 6 is reset again under the pressure of the inclined surface 10, and the wheel body 2 is locked. With such a design of this embodiment, the tire 5 can be replaced by only slightly sliding the connecting shaft 4.

[0025] Furthermore, ring gaps 11 are provided on both sides of the fixing ring 8. A bearing 12 is provided in the ring gap 11, and the thickness of the bearing 12 is greater than the depth of the ring gap 11. The connecting shaft 4 is sleeved in the inner hole of the bearing 12. Such a design makes the rotation of this embodiment smoother, and the wheel body 2 will not scratch the mounting bracket 1.

[0026] Furthermore, the outer curved surface of the rim 3 is provided with a plurality of horizontal bars 13 in a circumferential array, and the inner sidewall of the tire 5 is provided with grooves matching the horizontal bars 13. With such a design, the horizontal bars 13 are inserted into the grooves to limit the circumferential sliding of the tire 5, thereby making the present embodiment more stable.

[0027] Furthermore, the outer wall of the rim 3 is provided with a plurality of slots 14 in a circumferential array. The slots 14 may be through-going or not through-going. Such a design saves more materials and has better economic benefits.

[0028] The above implementation modes cannot limit the protection scope of the present invention. The equivalent modifications and changes made by those skilled in the art without departing from the overall concept of the present invention are still within the scope of the present invention.

Claims

1. A caster with replaceable tires, comprising a mounting bracket and a wheel body, characterized in that: The wheel body includes a connecting shaft connected to the mounting bracket, the connecting shaft is sleeved in the inner hole of the rim, the outer curved surface of the rim is detachably sleeved with a tire, a plurality of limit rods are arranged in an internal circumferential array of the rim, the limit rods are radially slidably arranged, and the limit rods are provided with elastic parts, the elastic parts enable the limit rods to maintain a sliding movement tendency toward the axis, one end of the limit rod is used to contact the connecting shaft, and the other end of the limit rod is used to be inserted into the limit hole inside the tire.

2. The caster with replaceable tire according to claim 1, characterized in that: A fixing ring is arranged between the rim and the connecting shaft, the fixing ring is fixedly connected to the rim, and the fixing ring is provided with a limiting portion, and the limiting portion is used to limit the sliding of the limiting rod.

3. The caster with replaceable tire according to claim 2, characterized in that: The connecting shaft is provided with a recessed ring, the recessed ring is arranged on both sides of the limiting rod, and the recessed ring is provided with an inclined surface, and the inclined surface is arranged on a side close to the limiting rod.

4. The caster with replaceable tire according to claim 2, characterized in that: Ring gaps are arranged on both sides of the fixing ring, bearings are arranged in the ring gaps, the thickness of the bearings is greater than the depth of the ring gaps, and the connecting shaft is sleeved in the inner hole of the bearings.

5. The caster with replaceable tire according to claim 1, characterized in that: The outer curved surface of the rim is provided with a plurality of horizontal bars in a circumferential array, and the inner side wall of the tire is provided with grooves matching the horizontal bars.

6. The caster with replaceable tire according to claim 1, characterized in that: The outer side wall of the rim is provided with a plurality of slots in a circumferential array.

Images