Metal-based self-lubricating shaft sleeve

Abstract

The metal-based self-lubricating shaft sleeve comprises an outer sleeve and an inner sleeve, the outer sleeve is connected with the inner sleeve, the two ends of the outer sleeve and the inner sleeve are connected in a hasp mode after the outer sleeve and the inner sleeve are unfolded, and an oil groove set and an oil hole set are arranged on the inner wall of the inner sleeve. The oil groove group comprises a linear groove and an oblique groove, the oblique groove and the linear groove are of an integrated structure, and the angle between the oblique groove and the linear groove is an acute angle; the oil hole set comprises a plurality of oil storage holes arranged in an array mode, and the oil storage holes are the same in size and depth. The inner sleeve is provided with the oil groove group and the oil hole group, the linear grooves are circumferentially arranged, and the oil storage holes are distributed in an array manner and can be uniformly distributed on the whole working surface of the bearing, so that a stable oil supply environment and space are provided, the energy loss is reduced, and the mechanical efficiency is improved; the oil groove group comprises a linear groove and an oblique groove, can store a large amount of lubricating oil, can reduce friction and abrasion caused by poor lubrication of the bearing, reduces the operation temperature of the bearing, and prolongs the service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shaft sleeve technical field especially relates to a metal base self -lubricating shaft sleeve. BACKGROUND

[0002] The bearing is mainly composed of the following parts: shaft sleeve (inner ring and outer ring), rolling element and retainer. The inner ring is usually closely matched with the shaft and rotates together, and the outer ring is fixed on the bearing seat or the shell of the mechanical part and plays a supporting role. The shaft sleeve is a structure for sleeving on the shaft, which can protect the shaft. After wear, the shaft sleeve can be replaced, avoiding direct wear of the shaft and reducing maintenance costs.

[0003] Patent document CN213145094U discloses a double metal coiled shaft sleeve, which comprises a sleeve body, a wear-resistant layer one is arranged outside the sleeve body, a wear-resistant layer two is arranged on the inner wall of the sleeve body, a plurality of rhombic blind holes one are arranged outside the wear-resistant layer one, a plurality of rhombic blind holes two are arranged on the inner wall of the wear-resistant layer two, an open seam is arranged at one end of the side of the sleeve body, the wear-resistant layer one and the wear-resistant layer two, the open seam is arranged in a straight line, a lubricating layer is arranged on the inner wall of the wear-resistant layer two, an oil outlet fine hole one is connected between one side of the rhombic blind hole two and the oil storage ring one, a sealing plug one is arranged in the oil inlet hole one, an oil storage ring two is arranged at one end of the inside of the sleeve body, an oil inlet hole two is arranged on one side of the oil storage ring two, an oil outlet fine hole two is connected between one side of the rhombic blind hole two and the oil storage ring two, and a sealing plug two is arranged in the oil inlet hole one. Advantage: conducive to the efficient movement of the bearing, and not prone to occlusion.

[0004] The existing shaft sleeve needs to add lubricating oil between the shaft and the shaft sleeve during use in order to reduce friction and prevent the shaft sleeve from wearing. In the above scheme, the shaft sleeve cannot store more lubricating oil, cannot provide stable oil supply to reduce friction and wear caused by poor lubrication, and cannot be uniformly distributed to the entire working surface of the bearing. Therefore, it is necessary to provide a metal base self-lubricating shaft sleeve to solve the problems in the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a metal base self-lubricating shaft sleeve.

[0006] The utility model adopts the following technical scheme to solve the technical problem:

[0007] A metal base self-lubricating shaft sleeve, comprising an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve are connected, the outer sleeve and the inner sleeve are connected by a snap type connection after being unfolded, and the inner wall of the inner sleeve is provided with an oil groove group and an oil hole group:

[0008] The oil groove group comprises a straight line groove and an inclined line groove, the inclined line groove and the straight line groove are an integral structure, and the angle between the inclined line groove and the straight line groove is an acute angle;

[0009] The oil hole group comprises a plurality of oil storage holes arranged in an array, and the size and depth of the oil storage holes are the same.

[0010] The utility model further sets up, one end of outer cover and inner cover is equipped with lug, one end of outer cover and inner cover is equipped with recess, lug and recess are adapted, and outer cover and inner cover lap after rolling.

[0011] The utility model further sets up, and the outer wall of outer cover is equipped with chamfer symmetrically at both ends.

[0012] The utility model further sets up, and the shape of straight line groove and inclined line groove is all rectangular half circle, and straight line groove and inclined line groove are equipped with arc one and arc two at the joint.

[0013] The utility model further sets up, and the distance between two inclined line grooves is half of the circumference of inner cover.

[0014] The utility model further sets up, and the width of straight line groove and inclined line groove is identical, and the width of straight line groove and inclined line groove is identical with the aperture of oil storage hole.

[0015] The utility model further sets up, and the recess shape of oil storage hole is spherical recess.

[0016] The utility model further sets up, and outer cover is steel cover.

[0017] The utility model further sets up, and inner cover is copper cover.

[0018] Summarized above, the utility model has following beneficial effect:

[0019] 1. the inner cover of the utility model is equipped with oil groove group and oil hole group, and straight line groove is arranged circumferentially, and oil storage hole is arranged in an array, can be evenly distributed to the whole working surface of bearing, provides stable oil supply environment and space, reduces energy loss, improves mechanical efficiency.

[0020] 2. the oil groove group of the utility model includes straight line groove and inclined line groove, can store a large amount of lubricating oil, can reduce the friction and wear of bearing due to poor lubrication, reduce the running temperature of bearing, prolong the service life.

[0021] 3. the spherical recess of the utility model can improve sealing performance and lubricating effect, enhance the strength of shaft sleeve. DRAWINGS

[0022] Figure 1 It is the development diagram of the utility model.

[0023] Figure 2 It is the section view of the utility model.

[0024] Figure 3 It is the utility model Figure 1A-A sectional view in the figure.

[0025] Figure 4 The utility model Figure 1 B-B sectional view in the figure.

[0026] In the figure, 1. outer cover, 2. inner cover, 3. straight slot, 4. oblique slot, 5. oil storage hole, 6. protruding block, 7. recess, 8. chamfer, 9. arc 1, 10. arc 2. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model protection.

[0028] Embodiment 1

[0029] In this embodiment, as Figures 1-4 shown, the utility model discloses a metal base self-lubricating bushing, including outer cover 1 and inner cover 2, outer cover and inner cover are connected, outer cover and inner cover are connected after unfolding two ends adopt the buckle type, and the inner wall of inner cover is equipped with oil groove group and oil hole group:

[0030] The oil groove group includes straight slot 3 and oblique slot 4, and the oblique slot and the straight slot are an integral structure, and the angle between the oblique slot and the straight slot is an acute angle.

[0031] The oil hole group includes a plurality of oil storage holes 5 arranged in an array, and the size and depth of the oil storage holes are the same.

[0032] In this example, the angle between the oblique slot and the straight slot is 60 degrees, the depth of the oil storage hole is 0.5mm, the error is not more than 0.1mm, the aperture of the oil storage hole is 3.5mm, the error is not more than 0.5mm, and the spacing between the oil storage holes is appropriately 8mm.

[0033] In this embodiment, further provided are that one end of the outer cover and the inner cover is provided with a protruding block 6, one end of the outer cover and the inner cover is provided with a recess 7, the protruding block and the recess are matched, and the outer cover and the inner cover are overlapped after being rolled.

[0034] Further provided in the embodiment is that the outer sleeve outer wall is symmetrically provided with a chamfer 8 at both ends, and the chamfer parameter is C0.5mm.

[0035] Further provided in the embodiment is that the linear groove and the oblique groove are both in the shape of a rectangle connected with a semicircle, and the linear groove and the oblique groove are provided with a circular arc 1 9 and a circular arc 2 10 at the joint, the circular arc 1 parameter is R2mm, and the circular arc 2 parameter is R5mm.

[0036] Further provided in the embodiment is that the distance between the two oblique grooves is half of the inner sleeve circumference.

[0037] Further provided in the embodiment is that the width of the linear groove and the oblique groove is consistent, and the width of the linear groove and the oblique groove is consistent with the oil storage hole diameter.

[0038] Further provided in the embodiment is that the oil storage hole is in the shape of a spherical groove, and the linear groove and the oblique groove are also both in the shape of a spherical groove, and the spherical groove parameter is SR2mm. The spherical groove design can increase the strength of the sleeve, prevent deformation or damage due to excessive load, reduce the wear of the bearing through reasonable lubricating oil management and reduce friction, and prolong the service life of the mechanical equipment.

[0039] Further provided in the embodiment is that the outer sleeve is a steel sleeve.

[0040] In the example, the outer sleeve material can be high-carbon steel, alloy steel or stainless steel. The material has large density, high hardness, large strength, good wear resistance, and can meet the use requirements under high-speed and high-load working conditions, and is suitable for heavy-load mechanical equipment such as machine tools, automobiles, trains and ships.

[0041] Further provided in the embodiment is that the inner sleeve is a copper sleeve.

[0042] In the example, the inner sleeve thickness is 0.5mm, and the difference is not more than 0.1mm. The inner sleeve material can be brass material, which has corrosion resistance and good heat conduction performance, and is suitable for high-speed and high-temperature working environments.

[0043] Embodiment 2:

[0044] In the embodiment, as shown in Figures 1-4 , the test requirements are as follows: the outer surface of the outer sleeve is required to be smooth and free of rust, the size and depth of the oil storage hole are the same, burrs are not allowed in the oil storage hole, the linear groove and the oblique groove, and the inner surface of the inner layer is not overburned.

[0045] Embodiment 3:

[0046] In the embodiment, as shown in Figures 1-4As shown, on the basis of embodiment 1, the oblique groove can be through one end or both upper and lower ends of the inner sleeve, so that the oblique groove not only has the oil storage function, the former can make the oblique groove have the oil injection function, and the latter can make the oblique groove have the oil injection and oil discharge functions, at this time the oblique groove as a whole becomes an oil inlet and outlet channel, and different types of shaft sleeves are used according to actual product requirements and on-site installation environment.

[0047] In the description of the utility model, it needs to be explained that when the terms indicating the orientation or position relationship such as "up", "down", "inner", "outer", "left", "right" appear, it should be understood that the orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the utility model product is used, or the orientation or position relationship commonly understood by the person skilled in the art, and it is only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model. In addition, when the terms "first", "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting" should be understood broadly, for example, "connecting" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A metal-based self-lubricating bushing comprising an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve being connected, characterized in that, The outer sleeve and the inner sleeve are connected by a buckle type connection at two ends after being unfolded, and an oil groove group and an oil hole group are arranged on the inner wall of the inner sleeve: The oil groove group comprises straight grooves and inclined grooves, the inclined grooves and the straight grooves are an integral structure, and the angle between the inclined grooves and the straight grooves is an acute angle. The oil hole group comprises a plurality of oil storage holes arranged in an array, and the size and depth of the oil storage holes are the same.

2. The metal-based self-lubricating bushing of claim 1, wherein, One end of the outer sleeve and the inner sleeve is provided with a protrusion, and the other end of the outer sleeve and the inner sleeve is provided with a groove, the protrusion and the groove are matched, and the outer sleeve and the inner sleeve are overlapped after being rolled.

3. The metal-based self-lubricating bushing of claim 1, wherein, The outer wall of the outer sleeve is symmetrically provided with chamfers at two ends.

4. The metal-based self-lubricating bushing of claim 1, wherein, The shapes of the straight grooves and the inclined grooves are both rectangular joints with semicircles, and the straight grooves and the inclined grooves are provided with a first arc and a second arc at the joint.

5. The metal-based self-lubricating bushing of claim 1, wherein, The distance between the two inclined grooves is half of the circumference of the inner sleeve.

6. The metal-based self-lubricating bushing of claim 1, wherein, The width of the straight grooves and the inclined grooves is consistent, and the width of the straight grooves and the inclined grooves is consistent with the hole diameter of the oil storage holes.

7. The metal-based self-lubricating bushing of claim 1, wherein, The groove shape of the oil storage hole is a spherical groove.

8. The metal-based self-lubricating bushing of claim 1, wherein, The outer sleeve is a steel sleeve.

9. The metal-based self-lubricating bushing of claim 1, wherein, The inner sleeve is a copper sleeve.

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