Bolt type roller needle bearing

Abstract

The utility model provides a bolt type roller needle bearing, including: outer tile, bolt subassembly and rolling subassembly, the outer tile is rotatingly installed on the outside of bolt subassembly through rolling subassembly, the bolt subassembly includes connecting portion, connecting screw, sealing cover and sealing screw, the right side of connecting portion is integratedly provided with connecting screw, the sealing cover is equipped with the sealing screw, the connecting screw is equipped with the sealing cover, and the sealing cover is equipped with the sealing screw. Compared with the prior art, the bearing assembly has the advantages that due to the arrangement of the connecting part, follow-up lubricating oil filling of the whole bearing assembly is very convenient, the follow-up maintenance difficulty of the whole bearing is greatly lowered, the service life of the bearing assembly is prolonged, and the service life of the bearing assembly is prolonged. And the whole bolt assembly is convenient to machine due to the arrangement of the connecting screw without detaching the coated lubricating oil, and the sealing screw can be directly detached for cleaning once the flow guide hole and the oil storage cavity need to be cleaned, so that the maintenance and cleaning difficulty of the bolt assembly is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and particularly relates to a bolt-type roller needle bearing. Background Art

[0002] The structural design of bolt-type roller needle bearings usually makes the arrangement of lubrication holes rather limited. Therefore, during use, when lubricating oil needs to be replenished, it is often difficult to reach the interior of the bearing, resulting in poor lubrication effect of the bearing. The shortage of lubricating oil will cause an increase in friction and temperature, thus accelerating the wear of the bearing and affecting its service life. Secondly, these defects are mainly due to the lack of consideration of the convenience of later maintenance during design. The complexity of the fixed installation position and structure makes the lubrication operation cumbersome, and thus in actual use, users neglect the importance of regular lubrication.

[0003] In response to this problem, conventional countermeasures include adding lubrication holes during the design stage or using external lubrication devices. However, adding lubrication holes may affect the strength and sealing performance of the bearing, resulting in the infiltration of contaminants and damaging the performance of the bearing. In addition, although external lubrication devices can solve the problem of inconvenient lubrication to a certain extent, their implementation is complex, the cost is high, and additional installation and maintenance are required. It cannot be guaranteed that all users are willing to adopt them. Therefore, we hope to design a bolt-type roller needle bearing with a novel structure to solve this problem. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a bolt-type roller needle bearing to solve the problems put forward in the above background art.

[0005] The utility model is realized through the following technical solutions: A bolt-type roller needle bearing, comprising: an outer tile, a bolt assembly, and a rolling assembly. The outer tile is rotatably installed outside the bolt assembly through the rolling assembly. The bolt assembly includes a connecting part, a connecting screw, a sealing cover, and a sealing screw.

[0006] The connecting screw is integrally arranged on the right side of the connecting part. A sealing cover is installed between the right side of the connecting part and the outer tile. The sealing screw is threadedly connected inside the connecting screw.

[0007] The rolling assembly includes rollers and a cage. A plurality of rollers distributed in an annular structure are rotatably installed inside the outer wall of the cage.

[0008] As a preferred embodiment, a hexagonal socket is recessed to the right in the middle of the left side of the connecting part. An end plate is arranged at the left end of the connecting part. An oil injection hole is opened to the right on the upper side of the left surface of the end plate. A threaded hole is arranged at the left end part of the oil injection hole. The oil injection hole is threadedly connected with a sealing screw through the threaded hole.

[0009] As a preferred embodiment, an oil storage cavity is arranged in the middle of the connecting part, and an oil passage with an inclined structure is arranged at the right end of the oil injection hole. The left end of the oil passage is communicated with the inside of the threaded hole, and the right end of the oil passage is communicated with the inside of the oil storage cavity. In actual use, the inclination angle of the oil passage is 60 degrees, which can quickly guide the oil injected into the threaded hole into the oil storage cavity.

[0010] As a preferred embodiment, a diversion hole is respectively opened forward at the front side of the bottom of the oil storage cavity and backward at the rear side. The bottoms of the two diversion holes are flush with the bottom of the oil storage cavity. The setting that the bottoms of the diversion holes are flush with the bottom of the oil storage cavity can facilitate the derivation of the oil at the bottom of the oil storage cavity.

[0011] As a preferred embodiment, a screw hole is arranged inside the connecting screw. The left end of the screw hole is communicated with the inside of the right end of the oil storage cavity. The structure and size of the screw hole are both matched with the structure and size of the sealing screw.

[0012] As a preferred embodiment, the cage is movably installed between the outer tile and the outside of the connecting part. The outer end of the roller is in rolling connection with the inner wall of the outer tile, and the inner end of the roller is in rolling connection with the outer wall of the connecting part.

[0013] As a preferred embodiment, the two diversion holes are arranged in a horizontal structure in the front-back direction, and the rear end of the diversion hole at the rear side of the connecting part is communicated with the rear end between the outer tile and the outside of the connecting part, and the front end of the diversion hole at the front side of the connecting part is communicated with the front end between the outer tile and the outside of the connecting part.

[0014] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows: With the arrangement of the connecting part, when oil injection is required, the sealing screw is removed by an external flat-tip screwdriver, and then lubricating oil can be injected into the oil storage cavity. This makes it very convenient to add lubricating oil to the entire bearing assembly subsequently, greatly reducing the difficulty of subsequent maintenance of the entire bearing, and there is no need to disassemble and apply lubricating oil;

[0015] With the arrangement of the connecting screw, a screw hole is arranged inside the connecting screw, and the left end of the screw hole is communicated with the right end of the oil storage cavity. This makes the processing of the entire bolt assembly convenient, and once it is necessary to clean the diversion hole and the oil storage cavity, the sealing screw can be directly disassembled for cleaning, greatly reducing the difficulty of maintenance and cleaning of the bolt assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 This is a schematic diagram of the overall structure of a bolt - type roller needle bearing of the present utility model.

[0018] Figure 2 This is a schematic diagram of a sectional view of a bolt - type roller needle bearing of the present utility model.

[0019] Figure 3 This is a schematic diagram of the outer shell structure of a bolt - type roller needle bearing of the present utility model.

[0020] Figure 4 This is a schematic diagram of the bolt assembly structure of a bolt - type roller needle bearing of the present utility model.

[0021] In the figure, 100 - outer shell;

[0022] 200 - bolt assembly, 210 - hexagon socket, 220 - sealing screw, 230 - connecting part, 231 - end plate, 232 - oil injection hole, 233 - oil storage cavity, 234 - diversion hole, 240 - connecting screw, 241 - screw hole, 250 - sealing cover, 260 - sealing screw;

[0023] 300 - rolling assembly, 310 - roller, 320 - cage. Specific embodiments

[0024] Next, with reference to the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a bolt - type roller needle bearing, comprising: an outer shell 100, a bolt assembly 200, and a rolling assembly 300. The outer shell 100 is rotatably installed outside the bolt assembly 200 through the rolling assembly 300. The bolt assembly 200 includes a connecting part 230, a connecting screw 240, a sealing cover 250, and a sealing screw 260;

[0026] The connecting screw 240 is integrally provided on the right side of the connecting part 230. A sealing cover 250 is installed between the right side of the connecting part 230 and the outer shell 100. The sealing screw 260 is threadedly connected inside the connecting screw 240;

[0027] The rolling assembly 300 includes rollers 310 and a cage 320. A plurality of rollers 310 distributed in an annular structure are rotatably installed inside the outer wall of the cage 320.

[0028] Please refer to Figures 1 to 4 Figures 1 to 4 , a hexagonal socket 210 is formed by a concave portion in the middle of the left side of the connecting portion 230. A end plate 231 is provided at the left end of the connecting portion 230. An oil injection hole 232 is formed on the upper side of the left surface of the end plate 231 and extends to the right. A threaded hole is provided at the left end portion of the oil injection hole 232. The oil injection hole 232 is threadedly connected to the sealing screw 220 through the threaded hole.

[0029]

[0029] An oil storage cavity 233 is provided in the middle of the connecting portion 230. The right end of the oil injection hole 232 is provided with an oil passage having an inclined structure. The left end of the oil passage communicates with the inside of the threaded hole, and the right end of the oil passage communicates with the inside of the oil storage cavity 233. In actual use, the inclination angle of the oil passage is 60 degrees, which can quickly introduce the oil injected into the threaded hole into the oil storage cavity 233.

[0030]

[0030] One diversion hole 234 is respectively formed at the front side and the rear side of the bottom of the oil storage cavity 233, and the bottoms of the two diversion holes 234 are flush with the bottom of the oil storage cavity 233. This setting of the bottoms of the diversion holes 234 being flush with the bottom of the oil storage cavity 233 can facilitate the discharge of the oil at the bottom of the oil storage cavity 233.

[0031] As the first embodiment of the present invention, in actual use, by providing an oil storage cavity 233 inside the connecting portion 230 and respectively providing one diversion hole 234 at the front side and the rear side of its bottom, when the entire bearing structure rotates, the two diversion holes 234 continuously penetrate lubricating oil outward (the penetration speed is not large. By selecting a suitable lubricating oil, it can flow at a relatively slow speed to reduce the discharge consumption of the lubricating oil), and smear the lubricating oil on the surface of the rolling roller 310. Since the bottoms of the diversion holes 234 are flush with the bottom of the oil storage cavity 233, all the lubricating oil inside the oil storage cavity 233 can be discharged. An oil injection hole 232 is provided on the left side of the connecting portion 230 and is matched with the sealing screw 220. When oil injection is required, the sealing screw 220 is removed by an external flat-head screwdriver, and then lubricating oil can be injected into the oil storage cavity 233. This makes it very convenient to add lubricating oil to the entire bearing assembly subsequently, greatly reducing the difficulty of subsequent maintenance of the entire bearing, and there is no need to disassemble and smear lubricating oil.

[0032] Please refer to Figure 2 Figure 2 , a screw hole 241 is provided inside the connecting screw 240. The left end of the screw hole 241 communicates with the inside of the right end of the oil storage cavity 233. The structure and size of the screw hole 241 are both matched with the structure and size of the sealing screw 260.

[0033]

[0033] The cage 320 is movably installed between the outer housing 100 and the outside of the connecting portion 230. The outer end of the roller 310 is in rolling connection with the inner wall of the outer housing 100, and the inner end of the roller 310 is in rolling connection with the outer wall of the connecting portion 230.

[0034] The two diversion holes 234 are horizontally arranged in the front-rear direction, and the rear end of the diversion hole 234 at the rear side of the connecting portion 230 communicates with the rear end between the outer tile 100 and the outside of the connecting portion 230, and the front end of the diversion hole 234 at the front side of the connecting portion 230 communicates with the front end between the outer tile 100 and the outside of the connecting portion 230.

[0035] As the second embodiment of the present invention, based on the above first embodiment, the connecting screw 240 is provided, and a screw hole 241 is provided inside the connecting screw 240, and the left end of the screw hole 241 communicates with the right end of the oil storage cavity 233. This makes the processing of the entire bolt assembly 200 convenient, and once it is necessary to clean the diversion hole 234 and the oil storage cavity 233, the sealing screw 260 can be directly disassembled for cleaning, greatly reducing the difficulty of maintaining and cleaning the bolt assembly 200.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bolt-type roller needle bearing, comprising: An outer tile (100), a bolt assembly (200), and a rolling assembly (300), characterized in that the outer tile (100) is rotatably mounted on the outside of the bolt assembly (200) through the rolling assembly (300), and the bolt assembly (200) includes a connecting portion (230), a connecting screw (240), a sealing cover (250), and a sealing screw (260); The connecting screw (240) is integrally provided on the right side of the connecting portion (230), a sealing cover (250) is installed between the right side of the connecting portion (230) and the outer tile (100), and a sealing screw (260) is threadedly connected inside the connecting screw (240); The rolling assembly (300) includes rollers (310) and a cage (320), and a plurality of rollers (310) distributed in an annular structure are rotatably installed inside the outer wall of the cage (320).

2. The bolt-type roller needle bearing according to claim 1, wherein: A hexagonal socket (210) is recessed rightward in the middle of the left side of the connecting portion (230), an end plate (231) is provided at the left end of the connecting portion (230), an oil injection hole (232) is opened rightward on the upper side of the left surface of the end plate (231), a threaded hole is provided in a left end portion of the oil injection hole (232), and the oil injection hole (232) is threadedly connected to a sealing screw (220) through the threaded hole.

3. The bolt-type roller needle bearing according to claim 2, characterized in that: An oil storage cavity (233) is provided in the middle of the connecting portion (230), an oil passage with an inclined structure is provided at the right end of the oil injection hole (232), the left end of the oil passage communicates with the inside of the threaded hole, and the right end of the oil passage communicates with the inside of the oil storage cavity (233).

4. The bolt-type roller needle bearing according to claim 3, wherein: A diversion hole (234) is respectively opened forward and backward at the front side of the bottom of the oil storage cavity (233), and the bottoms of the two diversion holes (234) are flush with the bottom of the oil storage cavity (233).

5. The bolt-type roller needle bearing according to claim 4, characterized in that: A screw hole (241) is provided inside the connecting screw (240), the left end of the screw hole (241) communicates with the inside of the right end of the oil storage cavity (233), and the structure and size of the screw hole (241) match the structure and size of the sealing screw (260).

6. The bolt-type roller needle bearing according to claim 1, characterized in that: The cage (320) is movably installed between the outside of the outer tile (100) and the connecting portion (230), the outer end of the roller (310) is in rolling connection with the inner wall of the outer tile (100), and the inner end of the roller (310) is in rolling connection with the outer wall of the connecting portion (230).

7. The bolt-type roller needle bearing according to claim 4, characterized in that: The two diversion holes (234) are horizontally arranged in the front-rear direction, and the rear end of the diversion hole (234) at the rear side of the connecting portion (230) communicates with the rear end between the outside of the outer tile (100) and the connecting portion (230), and the front end of the diversion hole (234) at the front side of the connecting portion (230) communicates with the front end between the outside of the outer tile (100) and the connecting portion (230).

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