Roller for roller cage shoe

Abstract

A roller for a roller cage shoe belongs to the technical field of roller cage shoes and comprises a roller body, a supporting ring is arranged on the outer side of the roller body, and rubber coating layers wrap the outer circumferential surface, the inner circumferential surface and the axial end surface of the supporting ring and comprise a hot melt adhesive bonding layer, a buffer layer and a wear-resistant layer which are sequentially arranged in the direction away from the supporting ring. A plurality of positioning grooves are formed in the inner circumferential face of the supporting ring in the circumferential direction of the supporting ring, positioning holes communicated with the positioning grooves are formed in the outer circumferential face of the supporting ring, and the buffer layer is provided with a first fixing part and a second fixing part which penetrate through the hot melt adhesive bonding layer to sequentially stretch into the positioning holes and the positioning grooves. The bonding strength of the rubber coating layer and the roller body is high, and the possibility that the rubber coating layer falls off is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roller can ears, in particular to a roller used for roller can ears. Background Art

[0002] The roller lug is an important part of lifting equipment in the mining, metallurgy and other industries. It is mainly used to support and guide the lifting container to ensure the stability and normal operation of the lifting equipment. During the working process of the roller lug, there is a large friction and impact force between the roller and the guide rail. Especially when running at high load and high speed, the durability and stability of the roller lug have become an important guarantee for the reliability of the equipment.

[0003] The roller of the existing roller tank ear is often provided with a rubber coating layer on the outside of the roller body. When used, the following problems exist:

[0004] 1. The rubber layer and the roller body mostly rely on the surface roughness or the chemical bonding of the adhesive. The rubber layer is easy to tear and peel off after being stressed, and the bonding strength is insufficient, which seriously affects the reliability of the equipment.

[0005] 2. The existing roller body surface only adopts a simple mechanical structure (such as a single groove), and then is coated with a plastic layer. The plastic layer is easy to peel off during long-term use and cannot meet the needs of long-term use. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a roller for a roller tank ear.

[0007] The utility model adopts the following technical solution to solve the above-mentioned technical problems: a roller for a roller can ear, comprising a roller body, a support ring on the outside of the roller body, an outer circumferential surface, an inner circumferential surface and an axial end surface of the support ring are wrapped with a rubber layer, the rubber layer comprises a hot melt adhesive layer, a buffer layer and a wear-resistant layer arranged in sequence along a direction away from the support ring, a plurality of positioning grooves are arranged on the inner circumferential surface of the support ring along its circumferential direction, a positioning hole connected to the positioning groove is provided on the outer circumferential surface of the support ring, and the buffer layer has a first fixing portion and a second fixing portion which pass through the hot melt adhesive layer and extend into the positioning hole and the positioning groove in sequence.

[0008] As a preferred solution, a plurality of dovetail grooves are provided on the outer circumferential surface of the support ring along its circumferential direction, the positioning hole is located between two adjacent dovetail grooves, and the buffer layer has a third fixing portion that passes through the hot melt adhesive layer and extends into the dovetail groove.

[0009] As a preferred solution, the roller body includes a mounting ring, the support ring is sleeved on the outside of the mounting ring, and the axial length of the mounting ring is smaller than the axial length of the support ring.

[0010] As a preferred solution, the roller body is made of aluminum alloy material, and a plurality of weight-reducing holes are provided on the mounting ring.

[0011] As a preferred solution, the buffer layer is made of polyurethane, and the wear-resistant layer is made of nitrile rubber.

[0012] As a preferred solution, the thickness of the rubber coating on the outer circumferential surface and the axial end surface of the support ring is the same, and the thickness of the rubber coating on the inner circumferential surface of the support ring is smaller than the thickness of the rubber coating on the outer circumferential surface of the support ring.

[0013] As a preferred solution, the thickness of the hot melt adhesive layer on the outer circumferential surface of the support ring is 1-1.2 mm, the thickness of the buffer layer is 10-15 mm, and the thickness of the wear-resistant layer is 5-8 mm.

[0014] As a preferred solution, the thickness of the hot melt adhesive layer on the inner circumferential surface of the support ring is 1-1.2 mm, the thickness of the buffer layer is 2-3 mm, and the thickness of the wear-resistant layer is 1-2 mm.

[0015] The beneficial effects of the present application are: 1. The wear-resistant layer of the present application is made of nitrile rubber, which can effectively resist wear, and the buffer layer is made of polyurethane, which can well cope with impact force, so that the roller tank ear can operate stably under different working conditions.

[0016] 2. The present application sets positioning holes, positioning grooves and dovetail grooves in conjunction with the first fixing part, the second fixing part and the third fixing part, so that the rubber coating forms a multi-level mechanical locking structure on the surface of the roller body, thereby preventing the rubber coating from sliding and falling off along the circumferential and axial directions of the roller body, and significantly improving the bonding strength; the mechanical locking structure is combined with the hot-melt adhesive layer to greatly enhance the bonding strength between the rubber coating and the roller body, reduce the possibility of the rubber coating falling off, improve the overall reliability of the roller ear, reduce maintenance costs, and extend the service life of the roller ear. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a structural schematic diagram of the roller body of the utility model;

[0019] Figure 3 for Figure 1 A front view of

[0020] Figure 4 for Figure 3 AA section view;

[0021] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0022] Markings in the figure: 1. roller body, 11. mounting ring, 111. weight-reducing hole, 12. support ring, 121. positioning groove, 122. positioning hole, 123. dovetail groove, 2. rubber layer, 21. hot-melt adhesive layer, 22. buffer layer, 221. second fixing part, 222. third fixing part, 23. wear-resistant layer. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] See also Figure 1-5 The embodiment of the utility model provides a roller for a roller can ear, including a roller body 1, a support ring 12 is provided on the outer side of the roller body 1, the outer circumferential surface, inner circumferential surface and axial end surface of the support ring 12 are wrapped with a rubber layer 2, the rubber layer 2 includes a hot melt adhesive layer 21, a buffer layer 22 and a wear-resistant layer 23 which are sequentially arranged along a direction away from the support ring 12, a plurality of positioning grooves 121 are provided on the inner circumferential surface of the support ring 12 along its circumferential direction, a positioning hole 122 which is connected to the positioning groove 121 is provided on the outer circumferential surface of the support ring 12, and a first fixing portion and a second fixing portion 221 are provided on the buffer layer 22 which pass through the hot melt adhesive layer 21 and extend into the positioning hole 122 and the positioning groove 121 sequentially.

[0025] The outer circumferential surface of the support ring 12 is provided with a plurality of dovetail grooves 123 along its circumferential direction, the positioning hole 122 is located between two adjacent dovetail grooves 123, and the buffer layer 22 has a third fixing portion 222 extending through the hot melt adhesive layer 21 into the dovetail groove 123. The positioning groove 121 is semicircular.

[0026] Combination Figure 2 As shown, the roller body 1 comprises a mounting ring 11, and a support ring 12 is sleeved outside the mounting ring 11, and the axial length of the mounting ring 11 is smaller than the axial length of the support ring 12. The mounting ring 11 and the support ring 12 are made in one piece.

[0027] Specifically, the roller body 1 is made of aluminum alloy material, and a plurality of weight-reducing holes 111 are provided on the mounting ring 11 , thereby effectively reducing the weight of the roller body 1 .

[0028] More specifically, the elastic modulus of the hot melt adhesive layer 21 is between that of metal and polyurethane, which can achieve a hardness gradient transition, reduce stress mutations at the metal-polymer interface, and avoid delamination caused by stress concentration. The buffer layer 22 is made of polyurethane, which can absorb dynamic impact energy. Under emergency braking conditions of the cage, it can absorb instantaneous impact energy and protect the metal matrix of the roller body 1 from instantaneous impact damage. The wear-resistant layer 23 is made of nitrile rubber, which can greatly reduce the wear rate. The rubber coating layer 2 of the present application adopts a coating structure, which greatly increases the contact area and makes the rubber coating layer 2 more tightly combined with the roller body 1. It should be noted that the parts not described in detail in this application are all prior art.

[0029] Preheat the roller to 100°C, spray hot melt adhesive on the outer circumference, inner circumference and axial end face of the support ring 12 to form a hot melt adhesive layer 21, wherein the positioning hole 122, the positioning groove 121 and the dovetail groove 123 are not sprayed, and then the buffer layer 22 is injection molded on the hot melt adhesive layer 21, wherein the buffer layer 22 fills the positioning hole 122, the positioning groove 121 and the dovetail groove 123 to form the first fixing part, the second fixing part 221 and the third fixing part 222. Finally, the wear-resistant layer 23 is vulcanized on the buffer layer 22 by vulcanization.

[0030] In addition, the thickness of the rubber coating 2 on the outer circumferential surface and the axial end surface of the support ring 12 is the same, and the thickness of the rubber coating 2 on the inner circumferential surface of the support ring 12 is less than the thickness of the rubber coating 2 on the outer circumferential surface of the support ring 12. The thickness of the hot melt adhesive layer 21 on the outer circumferential surface of the support ring 12 is 1-1.2 mm, the thickness of the buffer layer 22 is 10-15 mm, and the thickness of the wear-resistant layer 23 is 5-8 mm. The thickness of the hot melt adhesive layer 21 on the inner circumferential surface of the support ring 12 is 1-1.2 mm, the thickness of the buffer layer 22 is 2-3 mm, and the thickness of the wear-resistant layer 23 is 1-2 mm.

[0031] The wear-resistant layer 23 of the present application can effectively resist wear, and the buffer layer 22 can cope with impact force well, so that the roller tank ear can operate stably under different working conditions.

[0032] Of course, the present invention is not limited to the above-described implementations. Several other implementations based on the design concept of the present invention are provided below.

[0033] For example, in other embodiments, different from the above-described embodiments, the thickness of the hot melt adhesive layer 21 on the outer circumferential surface of the support ring 12 is 1 mm, the thickness of the buffer layer 22 is 10 mm, and the thickness of the wear-resistant layer 23 is 5 mm. The thickness of the hot melt adhesive layer 21 on the inner circumferential surface of the support ring 12 is 1 mm, the thickness of the buffer layer 22 is 2 mm, and the thickness of the wear-resistant layer 23 is 1 mm.

[0034] For example, in other embodiments, different from the above-described embodiments, the thickness of the hot melt adhesive layer 21 on the outer circumferential surface of the support ring 12 is 1.2 mm, the thickness of the buffer layer 22 is 15 mm, and the thickness of the wear-resistant layer 23 is 8 mm. The thickness of the hot melt adhesive layer 21 on the inner circumferential surface of the support ring 12 is 1.2 mm, the thickness of the buffer layer 22 is 3 mm, and the thickness of the wear-resistant layer 23 is 2 mm.

[0035] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.

Claims

1. A roller for a roller can ear, comprising a roller body (1), the roller body (1) having a support ring (12) on the outside, the support ring (12) having an outer circumferential surface, an inner circumferential surface and an axial end surface wrapped with a rubber coating (2), characterized in that: The rubber coating layer (2) comprises a hot melt adhesive layer (21), a buffer layer (22) and a wear-resistant layer (23) which are arranged in sequence along a direction away from the support ring (12); a plurality of positioning grooves (121) are arranged on the inner circumferential surface of the support ring (12) along its circumferential direction; a positioning hole (122) which is in communication with the positioning groove (121) is arranged on the outer circumferential surface of the support ring (12); and a first fixing portion and a second fixing portion (221) which pass through the hot melt adhesive layer (21) and extend into the positioning hole (122) and the positioning groove (121) in sequence are arranged on the buffer layer (22).

2. The roller for roller can ears according to claim 1, characterized in that: A plurality of dovetail grooves (123) are provided on the outer circumferential surface of the support ring (12) along its circumferential direction, the positioning hole (122) is located between two adjacent dovetail grooves (123), and the buffer layer (22) has a third fixing portion (222) that passes through the hot melt adhesive layer (21) and extends into the dovetail groove (123).

3. The roller for roller can ears according to claim 1, characterized in that: The roller body (1) comprises a mounting ring (11), and the support ring (12) is sleeved on the outside of the mounting ring (11); the axial length of the mounting ring (11) is smaller than the axial length of the support ring (12).

4. The roller for roller can ears according to claim 3, characterized in that: The roller body (1) is made of an aluminum alloy material, and a plurality of weight-reducing holes (111) are provided on the mounting ring (11).

5. The roller for roller can ears according to claim 1, characterized in that: The buffer layer (22) is made of polyurethane, and the wear-resistant layer (23) is made of nitrile rubber.

6. The roller for roller can ears according to claim 1, characterized in that: The thickness of the rubber coating (2) on the outer circumferential surface and the axial end surface of the support ring (12) is the same, and the thickness of the rubber coating (2) on the inner circumferential surface of the support ring (12) is smaller than the thickness of the rubber coating (2) on the outer circumferential surface of the support ring (12).

7. The roller for roller can ears according to claim 6, characterized in that: The hot melt adhesive layer (21) on the outer circumferential surface of the support ring (12) has a thickness of 1-1.2 mm, the buffer layer (22) has a thickness of 10-15 mm, and the wear-resistant layer (23) has a thickness of 5-8 mm.

8. The roller for roller can ears according to claim 6, characterized in that: The hot melt adhesive layer (21) on the inner circumferential surface of the support ring (12) has a thickness of 1-1.2 mm, the buffer layer (22) has a thickness of 2-3 mm, and the wear-resistant layer (23) has a thickness of 1-2 mm.

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