Wear-resistant structure of protective sleeve of electric grinder

Abstract

The utility model relates to the field of electric grinders, in particular to an electric grinder protective sleeve wear-resistant structure which comprises an axle box, a protective sleeve and a wear-resistant sleeve, the protective sleeve is arranged outside the axle box, the wear-resistant sleeve is arranged at the front end of the protective sleeve in an attached mode, and the diameters of the sections of the front ends of the protective sleeve and the wear-resistant sleeve are reduced in the direction of an output shaft. The wear-resistant sleeve is additionally arranged outside the protective sleeve, so that the service life of the protective sleeve is prolonged, the situation that the axle box is abraded due to the fact that the protective sleeve is abraded through is avoided, the overall service life of the product is prolonged, the maintenance cost of the machine is reduced, and the competitiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric grinding, and particularly relates to a wear-resistant structure of an electric grinding protective sleeve. Background Art

[0002] According to actual user feedback, the protective sleeve and the axle box have wear problems. Most of the electric grinder axle box outer protective sleeves on the current market do not have a special structure designed to optimize the wear resistance of the protective sleeve. When the electric grinder is grinding deep holes, the front end of the protective sleeve is easy to contact the workpiece. The vibration of the main machine during operation will cause the front end of the protective sleeve to be easily worn. In severe working conditions, the axle box may be damaged. Therefore, in order to solve the deficiencies in the existing technology, a simple electric grinder protective sleeve wear-resistant structure needs to be designed. Utility Model Content

[0003] The utility model provides a wear-resistant structure of an electric grinding protective sleeve to solve the problems of the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an electric grinding protective sleeve wear-resistant structure comprises: an axle box, a protective sleeve and a wear-resistant sleeve, the protective sleeve is arranged outside the axle box, the wear-resistant sleeve is fitted at the front end of the protective sleeve, and the cross-sectional diameters of the protective sleeve and the front end of the wear-resistant sleeve are reduced along the output shaft direction.

[0005] As a further improvement, the wear-resistant sleeve and the protective sleeve are integrally formed and are made of the same material as the protective sleeve.

[0006] As a further improvement, the protective sleeve is provided with an annular groove, and the annular protrusion at the rear end of the wear-resistant sleeve is snap-engaged in the annular groove.

[0007] As a further improvement, the wear-resistant sleeve is a rubber sleeve.

[0008] As a further improvement, the wear-resistant sleeve is a metal sleeve.

[0009] As a further improvement, the protective cover is made of wear-resistant material.

[0010] Compared with the prior art, the wear-resistant structure of the electric grinding protective sleeve of the utility model has the following beneficial effects:

[0011] Adding a wear-resistant sleeve to the outside of the protective sleeve increases the service life of the protective sleeve, avoids wear of the axle box due to the wear of the protective sleeve, increases the overall service life of the product, reduces the maintenance cost of the machine, and improves the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 2 of the present utility model.

[0013] Figure 2 This is a schematic diagram of the structure of Embodiment 3 of the present utility model.

[0014] Figure 3 This is a schematic diagram of the structure of Embodiment 4 of the present utility model.

[0015] In the figure, 1-axle box, 2-protective sleeve, 21-annular groove, 3-wear-resistant sleeve, 31-annular protrusion. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The following is combined with the embodiments and attached Figures 1 to 3 , the technical solution of the utility model is further elaborated.

[0019] Example 1

[0020] A wear-resistant structure of an electric grinder protective sleeve comprises: an axle box 1, a protective sleeve 2 and a wear-resistant sleeve 3, wherein the protective sleeve 2 is arranged outside the axle box 1, and the wear-resistant sleeve 3 is arranged in a close fit at the front end of the protective sleeve 2. The cross-sectional diameters of the front ends of the protective sleeve 2 and the wear-resistant sleeve 3 are reduced along the output shaft direction, and the protective sleeve 2 is made of plastic material.

[0021] When the product is working, the moving structure inside the axle box 1 will generate heat and drive the axle box 1 to vibrate. The protective cover 2 made of plastic can isolate the heat of the axle box to prevent scalding and cushion the vibration of the axle box. On this basis, the present invention adds a wear-resistant cover 3 to increase the service life of the protective cover 2, while preventing the protective cover 2 from being worn through, causing wear of the axle box 1, and reducing the replacement cost of the protective cover 2 and the maintenance cost of the main machine.

[0022] Example 2

[0023] An electric wear protection sleeve wear-resistant structure, comprising: an axle box 1, a protection sleeve 2 and a wear sleeve 3, wherein the protection sleeve 2 is arranged outside the axle box 1, and the wear sleeve 3 is arranged at the front end of the protection sleeve 2 in a close fit, and the cross-sectional diameters of the front ends of the protection sleeve 2 and the wear sleeve 3 are arranged to decrease along the output shaft direction, and the wear sleeve 3 is integrally formed with the protection sleeve 2, and the wear sleeve 3 is made of the same material as the protection sleeve 2, and the protection sleeve 2 is made of wear-resistant material. Figure 1 As shown, the protective cover uses wear-resistant materials, such as polyamide glass fiber reinforced material (PA+GF45), and the front end of the protective cover is thickened to form an integrally molded wear-resistant cover 3 structure, thereby increasing the thickness of the protective cover 2 at the contact position with the workpiece, thereby increasing the wear resistance and service life of the protective cover 2.

[0024] Example 3

[0025] An electric wear protection sleeve wear-resistant structure, comprising: an axle box 1, a protection sleeve 2 and a wear sleeve 3, wherein the protection sleeve 2 is arranged outside the axle box 1, and the wear sleeve 3 is arranged at the front end of the protection sleeve 2, and the cross-sectional diameters of the front ends of the protection sleeve 2 and the wear sleeve 3 are arranged to decrease along the output shaft direction, and the protection sleeve 2 is provided with an annular groove 21, and the annular protrusion 31 at the rear end of the wear sleeve 3 is clamped in the annular groove 21, and the wear sleeve 3 is a rubber sleeve, and the protection sleeve 2 is made of plastic material. Figure 2 As shown, a rubber sleeve is added to the position where the front end of the protective sleeve is easily in contact with the workpiece, or a soft rubber secondary molding is performed on the protective sleeve to prevent the protective sleeve from colliding with the workpiece and causing the protective sleeve to wear out too quickly.

[0026] Example 4

[0027] An electric wear protection sleeve wear-resistant structure, comprising: an axle box 1, a protection sleeve 2 and a wear sleeve 3, wherein the protection sleeve 2 is arranged outside the axle box 1, and the wear sleeve 3 is arranged at the front end of the protection sleeve 2, and the cross-sectional diameters of the front ends of the protection sleeve 2 and the wear sleeve 3 are arranged to decrease along the output shaft direction, and the protection sleeve 2 is provided with an annular groove 21, and the annular protrusion 31 at the rear end of the wear sleeve 3 is clamped in the annular groove 21, and the wear sleeve 3 is a metal sleeve, and the protection sleeve 2 is made of plastic material. Figure 3 As shown, a metal sleeve is added to the front end of the protective sleeve where it is easy to contact the workpiece. The metal sleeve is more wear-resistant than plastic and rubber, which can greatly increase the service life of the protective sleeve.

[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A wear-resistant structure of an electric grinding protective sleeve, characterized in that: include: An axle box, a protective sleeve and a wear-resistant sleeve, wherein the protective sleeve is arranged outside the axle box, the wear-resistant sleeve is fitted at the front end of the protective sleeve, and the cross-sectional diameters of the front ends of the protective sleeve and the wear-resistant sleeve are reduced along the output shaft direction.

2. The wear-resistant structure of the electric grinding protective cover according to claim 1 is characterized in that: The wear-resistant sleeve and the protective sleeve are integrally formed and are made of the same material as the protective sleeve.

3. The wear-resistant structure of the electric grinding protective cover according to claim 1 is characterized in that: The protective sleeve is provided with an annular groove, and the annular protrusion at the rear end of the wear-resistant sleeve is clamped in the annular groove.

4. The wear-resistant structure of the electric grinding protective cover according to claim 3 is characterized in that: The wear-resistant sleeve is a rubber sleeve.

5. The wear-resistant structure of the electric grinding protective cover according to claim 3 is characterized in that: The wear-resistant sleeve is a metal sleeve.

6. The wear-resistant structure of the electric grinding protective cover according to claim 2, characterized in that: The protective cover is made of wear-resistant material.

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