High-strength wear-resistant shaft sleeve

Abstract

The utility model provides a high-strength wear-resistant shaft sleeve, which comprises a base, a lower shaft sleeve, a plurality of middle shaft sleeves and a fixed disc, the lower shaft sleeve, the middle shaft sleeves and the fixed disc are arranged on the base, a shaft hole in the base, a shaft hole in the lower shaft sleeve, a shaft hole in the middle shaft sleeves and a shaft hole in the fixed disc are positioned on the same axis and are communicated in sequence, and the middle shaft sleeves are arranged on the same axis. The lower shaft sleeve comprises a lower shaft sleeve body and a lower shaft sleeve lining arranged in the lower shaft sleeve body, the lower end of the lower shaft sleeve body is fixed to the base, a first annular boss is arranged on the circumference of the upper end of the lower shaft sleeve body, and the middle shaft sleeve comprises a middle shaft sleeve body and a middle shaft sleeve lining arranged in the middle shaft sleeve body. Annular oil injection grooves are formed in the outer wall of the lower shaft sleeve body and the outer wall of the middle shaft sleeve body. The shaft sleeve has the advantages that the lower shaft sleeve and the multiple middle shaft sleeves are connected, the overall length of the shaft sleeve can be changed so as to adapt to different mechanical devices, part of the shaft sleeve can be replaced when part of the shaft sleeve is damaged, and waste of the shaft sleeve is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaft sleeves, and is particularly suitable for a high-strength wear-resistant shaft sleeve. Background Art

[0002] Bushings are a crucial component in mechanical design, typically installed on rotating shafts to protect them. However, current bushings have drawbacks: They are difficult to adjust in length, making them incompatible with different mechanical equipment. Damage to a portion of the bushing requires replacement, shortening its lifespan. Utility Model Content

[0003] The utility model aims to provide a high-strength wear-resistant shaft sleeve, the length of which can be adjusted and increased, and part of the shaft sleeve can be replaced, which is easy to operate, improves the wear resistance and improves the overall high strength.

[0004] The technical solution of the utility model is: a high-strength wear-resistant sleeve, comprising a base, and a lower sleeve, a middle sleeve and a fixed plate arranged on the base, wherein the shaft hole in the base, the shaft hole in the lower sleeve, the shaft hole in the middle sleeve and the shaft hole in the fixed plate are on the same axis and are sequentially connected, and the middle sleeve is multiple.

[0005] The lower sleeve includes a lower sleeve body and a lower sleeve liner arranged in the lower sleeve body. The lower end of the lower sleeve body is fixed on the base, and the upper end of the lower sleeve body is circumferentially provided with a first annular boss.

[0006] The central sleeve includes a central sleeve body and a central sleeve liner arranged in the central sleeve body. The lower end of the central sleeve body is provided with an annular edge that matches the first annular boss. The annular edge is provided with a built-in connecting hole. A threaded blind hole corresponding to the built-in connecting hole is provided on the outer side of the first annular boss. The bolt passes through the built-in connecting hole and the thread is arranged in the threaded blind hole.

[0007] The upper end of the middle sleeve body is provided with a second annular boss that matches the annular edge of its lower end, and the second annular boss has the same structure as the first annular boss. The two adjacent middle sleeve bodies are connected by the second annular boss and its corresponding annular edge, and are fixed by bolts. The second annular boss of the uppermost middle sleeve body is connected to the fixed plate by fixing bolts.

[0008] The outer wall of the lower sleeve body and the middle sleeve body is provided with an annular oil filling groove, the inner wall of the annular oil filling groove is provided with a plurality of oil inlet holes, and an oil storage tank connected with the oil inlet holes is provided in the sleeve body.

[0009] The lower sleeve lining and the middle sleeve lining have the same structure. The middle sleeve lining includes a carbide layer and a composite strengthening layer arranged in sequence. The carbide layer is arranged close to the lower sleeve body. The middle sleeve lining is provided with a plurality of trapezoidal protrusions on the outside, and a trapezoidal groove corresponding to the trapezoidal protrusions is provided in the middle sleeve body. The sleeve body and the sleeve lining are connected by the engagement of the trapezoidal protrusions and the trapezoidal grooves.

[0010] Preferably, the inner diameter of the annular boss is smaller than the inner diameters of the lower sleeve body and the middle bearing body.

[0011] Preferably, a plurality of fixing threaded blind holes are provided on the outer side of the second annular boss of the uppermost middle sleeve body, a fixing ring is provided at the lower end of the fixing plate to match the second annular boss, and a built-in fixing hole is provided on the fixing ring to match the fixing threaded blind hole, and the fixing bolt passes through the built-in fixing hole and is provided in the fixing threaded blind hole.

[0012] Preferably, the oil storage groove is an annular spiral groove or a V-shaped groove.

[0013] Preferably, the hard alloy layer is made of nickel-chromium alloy, which has high strength and corrosion resistance, and improves the stability of the sleeve body during operation;

[0014] Preferably, the composite strengthening layer is a titanium carbide ceramic composite layer. Titanium carbide ceramic is a face-centered cubic crystal with high hardness, high melting point and excellent wear resistance, which further improves the wear resistance of the sleeve body during operation.

[0015] Preferably, a plurality of protrusions are provided on the inner side of the composite strengthening layer.

[0016] The advantages and positive effects of the present invention are as follows: due to the adoption of the above technical solution, the shaft sleeve is divided into a lower shaft sleeve and multiple middle shaft sleeves connected together, the overall length of the shaft sleeve can be changed to adapt to different mechanical equipment. When partial damage occurs, only part of the shaft sleeve needs to be replaced, reducing the waste of the shaft sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a top view of the middle shaft sleeve body.

[0019] Figure 3 It is a cross-sectional view of the center shaft sleeve lining.

[0020] In the picture:

[0021] 1. Base 2. Fixed plate 3. Lower sleeve body

[0022] 4. First annular boss 5. Middle shaft sleeve body 6. Middle shaft sleeve lining

[0023] 7. Second annular boss 8. Annular oil filling groove 9. Oil inlet hole

[0024] 10. Carbide layer 11. Composite strengthening layer 12. Trapezoidal protrusion

[0025] 13. Bumps. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1 、 2 As shown, the technical solution of the utility model is a high-strength wear-resistant sleeve, comprising a base 1, and a lower sleeve, a middle sleeve and a fixed plate 2 arranged on the base 1. The shaft hole in the base 1, the shaft hole in the lower sleeve, the shaft hole in the middle sleeve and the shaft hole in the fixed plate 2 are on the same axis and are sequentially connected. There are multiple middle sleeves.

[0028] The lower sleeve includes a lower sleeve body 3 and a lower sleeve liner provided in the lower sleeve body 3. The lower end of the lower sleeve body 3 is fixed on the base 1. The upper end of the lower sleeve body 3 is provided with a first annular boss 4.

[0029] The central sleeve includes a central sleeve body 5 and a central sleeve liner 6 provided in the central sleeve body 5. The lower end of the central sleeve body 5 is provided with an annular edge that matches the first annular boss 4. The annular edge is provided with a built-in connection hole. A threaded blind hole corresponding to the built-in connection hole is provided on the outer side of the first annular boss 4. The bolt passes through the built-in connection hole and the thread is provided in the threaded blind hole.

[0030] The upper end of the middle sleeve body 5 is provided with a second annular boss 7 that cooperates with the annular edge of its lower end, and the second annular boss 7 has the same structure as the first annular boss 4. The two adjacent middle sleeve bodies 5 are connected by the second annular boss 7 and the corresponding annular edge, and are fixed by bolts. The second annular boss 7 of the uppermost middle sleeve body 5 is connected to the fixed plate 2 by fixing bolts.

[0031] An annular oil filling groove 8 is provided on the outer wall of the lower sleeve body 3 and the middle sleeve body 5, and a plurality of oil inlet holes 9 are provided on the inner wall of the annular oil filling groove 8. An oil storage tank connected to the oil inlet hole 9 is provided in the sleeve body. The lower sleeve liner and the middle sleeve liner 6 have the same structure. The middle sleeve liner 6 includes a cemented carbide layer 10 and a composite strengthening layer 11 arranged in sequence. The cemented carbide layer 10 is arranged close to the lower sleeve body 3. The middle sleeve liner 6 is provided with a plurality of trapezoidal protrusions 12 on the outside, and a trapezoidal groove corresponding to the trapezoidal protrusions 12 is provided in the middle sleeve body 5. The sleeve body and the sleeve liner are connected by the engagement of the trapezoidal protrusions 12 with the trapezoidal grooves.

[0032] In this embodiment, the inner diameter of the annular boss is smaller than the inner diameters of the lower sleeve body and the middle bearing body.

[0033] In this embodiment, a plurality of fixed threaded blind holes are provided on the outer side of the second annular boss 7 located at the top of the middle sleeve body 5, and a fixing ring is provided at the lower end of the fixing plate 2 to cooperate with the second annular boss 7. The fixing ring is provided with a built-in fixing hole that cooperates with the fixed threaded blind hole, and the fixing bolt passes through the built-in fixing hole and is arranged in the fixed threaded blind hole.

[0034] In this embodiment, the hard alloy layer 10 is made of nickel-chromium alloy, which has high strength and corrosion resistance, and improves the stability of the sleeve body during operation;

[0035] In this embodiment, the composite strengthening layer 11 is a titanium carbide ceramic composite layer. Titanium carbide ceramic is a face-centered cubic crystal with high hardness, high melting point, and excellent wear resistance, further improving the wear resistance of the sleeve body during operation.

[0036] Example 2

[0037] like Figure 3 As shown, a plurality of protrusions 13 are provided on the inner side of the composite strengthening layer 11, and the oil storage groove is an annular spiral groove or a V-shaped groove. The rest of the technical content is consistent with that of Example 1.

[0038] The working process and principle of this example are as follows: When it is needed, the lower and middle sleeves are connected in sequence as needed, and the base is installed on the mechanical equipment. The sleeve is also divided into the sleeve body and the sleeve lining. When the friction between the shaft and the sleeve causes a lot of wear, the lining is replaced in order to make the sleeve reusable.

[0039] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A high-strength wear-resistant sleeve, characterized by: The top end of the middle axle is fixed with the base, and the bottom end of the middle axle is fixed with the base, and the bottom end of the middle axle is fixed with the base. The annular boss, and the second annular boss has the same structure as the first annular boss, the two adjacent middle sleeve bodies are connected by the second annular boss and its corresponding annular edge, and are fixed by bolts, the second annular boss of the uppermost middle sleeve body is connected to the fixed plate by fixing bolts, the outer wall of the lower sleeve body and the middle sleeve body is provided with an annular oil filling groove, the inner wall of the annular oil filling groove is provided with multiple oil inlet holes, an oil storage tank connected to the oil inlet hole is provided in the sleeve body, the lower sleeve lining and the middle sleeve lining have the same structure, the middle sleeve lining includes a carbide layer and a composite strengthening layer arranged in sequence, the carbide layer is arranged close to the lower sleeve body, the middle sleeve lining is provided with multiple trapezoidal protrusions on the outside, and a trapezoidal groove corresponding to the trapezoidal protrusions is provided in the middle sleeve body, the sleeve body and the sleeve lining are connected by the trapezoidal protrusions and the trapezoidal grooves.

2. The high-strength wear-resistant sleeve according to claim 1, characterized in that: The inner diameter of the annular boss is smaller than the inner diameters of the lower sleeve body and the middle bearing body.

3. The high-strength wear-resistant bushing according to claim 1, characterized in that: A plurality of fixed threaded blind holes are provided on the outer side of the second annular boss of the uppermost middle sleeve body, a fixed ring is provided at the lower end of the fixed plate to cooperate with the second annular boss, and a built-in fixing hole is provided on the fixing ring to cooperate with the fixed threaded blind hole, and the fixing bolt passes through the built-in fixing hole and is provided in the fixed threaded blind hole.

4. The high-strength wear-resistant bushing according to claim 1, characterized in that: The oil storage groove is an annular spiral groove or a V-shaped groove.

5. The high-strength wear-resistant bushing according to claim 1, characterized in that: The hard alloy layer is made of nickel-chromium alloy, which has high strength and corrosion resistance, and improves the stability of the shaft sleeve body during operation.

6. The high-strength wear-resistant bushing according to claim 1, characterized in that: The composite strengthening layer is a titanium carbide ceramic composite layer. Titanium carbide ceramic is a face-centered cubic crystal with high hardness, high melting point, and excellent wear resistance, further improving the wear resistance of the sleeve body during operation.

7. The high-strength wear-resistant bushing according to claim 1, characterized in that: A plurality of convex points are arranged on the inner side of the composite strengthening layer.

Images