Shaft sleeve with good wear resistance

Abstract

The utility model relates to the technical field of shaft sleeves, and discloses a shaft sleeve with good wear resistance, which comprises a shaft sleeve main body, an oil groove is arranged in the shaft sleeve main body, an auxiliary structure is arranged in the oil groove, the auxiliary structure comprises thermal expansion metal cotton, a push plate, a sliding rod, a baffle plate and an oil push plate, and the thermal expansion metal cotton is fixedly arranged in the oil groove. A push plate is fixedly installed on one side of the thermal expansion metal cotton and slidably connected with the inner wall of the oil groove, a sliding rod is fixedly installed on one side of the push plate, a baffle is slidably connected to the circumferential side face of the sliding rod and connected with the oil groove, and an oil push plate is fixedly installed at one end of the sliding rod and abuts against the oil groove. Through the arrangement of the auxiliary structure, heat can be generated when the shaft sleeve continues to work when no oil exists, the generated heat enables the thermal expansion metal cotton to expand, and therefore oil is automatically added into the shaft sleeve, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve with good wear resistance. Background Art

[0002] The shaft sleeve is a cylindrical mechanical part that is sleeved on the rotating shaft and is a component of the sliding bearing. Among the moving parts, the shaft is installed in the shaft hole. Because long-term use will cause wear between the shaft and the shaft hole, in order to increase the service life of the shaft, a shaft sleeve is sleeved on the outer surface of the shaft. The shaft sleeve here is used as a sliding bearing, and the shaft sleeve itself is made of a material with low hardness and good wear resistance.

[0003] The utility model patent application document with publication number "CN206017444U" discloses a new type of highly wear-resistant roller press sleeve, including a sleeve body, a sleeve body liner, an outer oil groove, an oil inlet hole, an oil hole, a chamfer, an arc and an inner oil groove. The beneficial effect of this technical solution is that the new type of highly wear-resistant roller press sleeve has the advantages of simple structure, good wear resistance, good lubrication effect, impact resistance, easy use, etc., and is suitable for widespread promotion.

[0004] The new type of highly wear-resistant roller press sleeve disclosed in the above document has the following defects: the staff may forget to add oil during use of this technical solution, resulting in the sleeve being damaged due to lack of oil, and the practicality is relatively low.

[0005] It can be seen from this that the existing new high wear-resistant roller press sleeve does not have a good oiling structure, and it is necessary to improve the existing deficiencies and provide a sleeve with good wear resistance. Utility Model Content

[0006] The purpose of the utility model is to provide a shaft sleeve with good wear resistance to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a shaft sleeve with good wear resistance, comprising a shaft sleeve main body, an oil groove is provided inside the shaft sleeve main body, an auxiliary structure is arranged inside the oil groove, the auxiliary structure comprises heat-expandable metal wool, a push plate, a sliding rod, a baffle plate and an oil pushing plate, heat-expandable metal wool is fixedly installed inside the oil groove, a push plate is fixedly installed on one side of the heat-expandable metal wool, the push plate is slidably connected to the inner wall of the oil groove, a sliding rod is fixedly installed on one side of the push plate, a baffle plate is slidably connected to the peripheral side surface of the sliding rod, the baffle plate is connected to the oil groove, an oil pushing plate is fixedly installed on one end of the sliding rod, and the oil pushing plate abuts against the oil groove.

[0009] Furthermore, an oil outlet groove is provided on the inner wall of the sleeve body, and the oil outlet groove is connected to the oil groove. An expansion groove is provided on the upper surface of the sleeve body, and a rubber plug is movably installed inside the expansion groove. An oil inlet groove is provided inside the expansion groove, and the oil inlet groove is connected to the oil groove.

[0010] Furthermore, a connecting component is fixedly installed on the circumferential side surface of the sleeve body, and the connecting component includes a fixing plate, a connecting rod, a groove, a spring, a block and an arcuate surface. A fixing plate is fixedly installed on the circumferential side surface of the sleeve body, a connecting rod is fixedly installed on the lower surface of the fixing plate, and the number of the connecting rods is fixed to four. A groove is provided on one side of the connecting rod, a spring is fixedly installed inside the groove, a block is fixedly installed on one end of the spring, and an arcuate surface is provided on the circumferential side surface of the fixing plate.

[0011] Furthermore, an outer shell is movably mounted on the peripheral side of the sleeve body.

[0012] Furthermore, the upper surface of the outer shell is provided with connecting grooves, the number of which is fixed at four, and the connecting grooves are snap-connected with the connecting rods.

[0013] Furthermore, a clamping slot is provided inside the connecting slot, and the clamping slot is clamped with the clamping block.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model opens the rubber plug to add oil to the expansion groove. The oil flows from the expansion groove through the oil inlet groove to the inside of the oil groove, and is stored inside the oil groove. When the shaft sleeve body is working without oil, the friction force increases and generates heat. The heat causes the heat-expanding metal wool to expand and push the push plate to move. The push plate pushes the sliding rod to slide inside the baffle plate. The baffle plate pushes the oil push plate to push the oil out of the oil outlet groove, thereby avoiding the risk of damage to the shaft sleeve caused by the staff forgetting to add oil.

[0016] (2) The utility model installs the connecting rod into the interior of the connecting groove, and the clamping block abuts against the inner wall of the connecting groove, so that the clamping block squeezes the spring to shrink into the interior of the groove. When the clamping block is inserted into the clamping groove, the spring rebounds and the clamping block is clamped into the interior of the connecting groove to complete the installation. The installation is convenient and quick, and the outer shell can be replaced separately when it is damaged, thereby reducing the cost of use.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the auxiliary structure of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. sleeve body; 101. oil groove; 102. oil inlet groove; 103. expansion groove; 104. oil outlet groove; 2. auxiliary structure; 201. heat-expandable metal wool; 202. push plate; 203. slide rod; 204. baffle; 205. oil push plate; 3. connecting assembly; 301. fixing plate; 302. connecting rod; 303. groove; 304. spring; 305. clamping block; 306. arc surface; 4. outer shell; 5. connecting groove; 6. clamping groove; 7. rubber plug. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 - Figure 4As shown, the utility model is a shaft sleeve with good wear resistance, including a shaft sleeve main body 1, an oil groove 101 is opened inside the shaft sleeve main body 1, an auxiliary structure 2 is arranged inside the oil groove 101, the auxiliary structure 2 includes heat expansion metal wool 201, a push plate 202, a slide rod 203, a baffle 204 and an oil push plate 205, the heat expansion metal wool 201 is fixedly installed inside the oil groove 101, a push plate 202 is fixedly installed on one side of the heat expansion metal wool 201, the push plate 202 is slidably connected to the inner wall of the oil groove 101, a slide rod 203 is fixedly installed on one side of the push plate 202, a baffle 204 is slidably connected to the peripheral side surface of the slide rod 203, the baffle 204 is connected to the oil groove 101, and an oil push plate 205 is fixedly installed on one end of the slide rod 203, and the oil push plate 205 abuts against the oil groove 101.

[0027] An oil outlet groove 104 is provided on the inner wall of the sleeve body 1, and the oil outlet groove 104 is connected to the oil groove 101. An expansion groove 103 is provided on the upper surface of the sleeve body 1, and a rubber plug 7 is movably installed inside the expansion groove 103. An oil inlet groove 102 is provided inside the expansion groove 103, and the oil inlet groove 102 is connected to the oil groove 101.

[0028] A connecting component 3 is fixedly installed on the circumferential side surface of the sleeve body 1, and the connecting component 3 includes a fixing plate 301, a connecting rod 302, a groove 303, a spring 304, a block 305 and an arc surface 306. A fixing plate 301 is fixedly installed on the circumferential side surface of the sleeve body 1, and a connecting rod 302 is fixedly installed on the lower surface of the fixing plate 301. The number of the connecting rods 302 is fixed to four, and a groove 303 is provided on one side of the connecting rod 302. A spring 304 is fixedly installed inside the groove 303, and a block 305 is fixedly installed on one end of the spring 304. An arc surface 306 is provided on the circumferential side surface of the fixing plate 301.

[0029] An outer shell 4 is movably mounted on the peripheral side of the sleeve body 1 .

[0030] The upper surface of the outer shell 4 is provided with connecting grooves 5 , the number of which is fixed at four, and the connecting grooves 5 are engaged with the connecting rods 302 .

[0031] A clamping slot 6 is formed inside the connecting slot 5 , and the clamping slot 6 is clamped with the clamping block 305 .

[0032] When in use, first install the connecting rod 302 into the interior of the connecting groove 5, the block 305 abuts against the inner wall of the connecting groove 5 so that the block 305 squeezes the spring 304 to shrink into the interior of the groove 303. When the block 305 is in the slot 6, the spring 304 rebounds so that the block 305 is stuck into the interior of the connecting groove 5 to complete the installation. The installation is convenient and quick. When the outer shell 4 is damaged, it can be replaced separately, which reduces the cost of use. By opening the rubber plug 7 and refueling the expansion groove 103, the oil flows from the expansion groove 103 through the oil inlet groove 102 to the inside of the oil groove 101, and is stored in the oil groove 101. When the shaft sleeve main body 1 is still working without oil, the friction force increases and heat is generated. The heat makes the thermal expansion metal wool 201 expand and pushes the push plate 202 to move. The push plate 202 pushes the sliding rod 203 to slide inside the baffle 204, and the baffle 204 pushes the oil push plate 205 to push the oil out of the oil outlet groove 104, thereby avoiding the risk of damage to the shaft sleeve caused by the staff forgetting to refuel.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shaft sleeve with good wear resistance, comprising a shaft sleeve body (1), characterized in that: An oil groove (101) is provided inside the shaft sleeve body (1), and an auxiliary structure (2) is provided inside the oil groove (101). The auxiliary structure (2) comprises heat-expandable metal wool (201), a push plate (202), a sliding rod (203), a baffle (204) and an oil push plate (205). The heat-expandable metal wool (201) is fixedly installed inside the oil groove (101), a push plate (202) is fixedly installed on one side of the heat-expandable metal wool (201), and the push plate (202) is slidably connected to the inner wall of the oil groove (101). A sliding rod (203) is fixedly installed on one side of the push plate (202), and a baffle (204) is slidably connected to the peripheral side surface of the sliding rod (203), and the baffle (204) is connected to the oil groove (101). An oil push plate (205) is fixedly installed on one end of the sliding rod (203), and the oil push plate (205) abuts against the oil groove (101).

2. A shaft sleeve with good wear resistance according to claim 1, characterized in that: An oil outlet groove (104) is provided on the inner wall of the shaft sleeve body (1), and the oil outlet groove (104) is connected to the oil groove (101). An expansion groove (103) is provided on the upper surface of the shaft sleeve body (1), and a rubber plug (7) is movably installed inside the expansion groove (103). An oil inlet groove (102) is provided inside the expansion groove (103), and the oil inlet groove (102) is connected to the oil groove (101).

3. A shaft sleeve with good wear resistance according to claim 1, characterized in that: A connecting assembly (3) is fixedly mounted on the peripheral side surface of the shaft sleeve body (1), and the connecting assembly (3) comprises a fixing plate (301), a connecting rod (302), a groove (303), a spring (304), a clamping block (305), and an arcuate surface (306). A fixing plate (301) is fixedly mounted on the peripheral side surface of the shaft sleeve body (1), a connecting rod (302) is fixedly mounted on the lower surface of the fixing plate (301), the number of the connecting rods (302) is fixed to four, a groove (303) is provided on one side of the connecting rod (302), a spring (304) is fixedly mounted inside the groove (303), a clamping block (305) is fixedly mounted on one end of the spring (304), and an arcuate surface (306) is provided on the peripheral side surface of the fixing plate (301).

4. A shaft sleeve with good wear resistance according to claim 1, characterized in that: An outer shell (4) is movably mounted on the peripheral side of the shaft sleeve main body (1).

5. A shaft sleeve with good wear resistance according to claim 4, characterized in that: The upper surface of the outer shell (4) is provided with connection grooves (5), the number of the connection grooves (5) is fixed at four, and the connection grooves (5) are snap-connected with the connection rod (302).

6. A shaft sleeve with good wear resistance according to claim 5, characterized in that: A clamping slot (6) is provided inside the connection slot (5), and the clamping slot (6) is clamped with the clamping block (305).

Images