Bolt roller bearing with double outer rings and double rows of roller pins

Abstract

The utility model discloses a bolt roller bearing with double outer rings and double rows of roller pins, which comprises an inner ring, a roller pin mounting ring frame is arranged on the outer peripheral surface of the inner ring, a group of roller pin mounting channels are annularly arranged at each of the front end and the rear end of the roller pin mounting ring frame, and a plurality of roller pins are mounted in each group of roller pin mounting channels. According to the bolt roller bearing with the double-outer-ring and double-row roller pins, the two sets of roller pins and the roller pin mounting channels are arranged to be matched with the first outer ring and the second outer ring, so that a double-row structure is conveniently formed, the two sets of roller pins and the roller pin mounting channels are matched with the first outer ring and the second outer ring, and the two sets of roller pins and the roller pin mounting channels are matched with the first outer ring and the second outer ring; the roller pin mounting structure is convenient to adapt to application occasions of double roller paths, equipment space is improved, production cost is saved, lubricating oil can be conveniently injected into the roller pin mounting channel through the first fixing hole, the annular fixing groove and the second fixing hole, the lubricity of the roller pin in long-term use can be conveniently kept, and excessive abrasion of the roller pin is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bolt roller bearing with double outer rings and double row needle rollers. Background Art

[0002] Bolt-type roller bearings are also called cam follower bearings. This type of bearing is suitable for medium and low speeds and heavy loads. Cam follower bearings include bolts as shafts, rollers, and needle rollers between the bolt ends and the rollers. Existing bolt roller bearings cannot achieve the application of double raceways, cannot improve equipment space, and cannot make the rollers always have good lubricity, and wear faster. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a bolt roller bearing with double outer rings and double row needle rollers, which can realize the application of double raceways, improve equipment space, and make the rollers always have good lubricity to avoid excessive wear of the rollers, and can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A bolt roller bearing with double outer rings and double row needle rollers comprises an inner ring, the outer circumferential surface of the inner ring is provided with a needle roller mounting ring frame, the front and rear ends of the needle roller mounting ring frame are respectively provided with a group of needle roller mounting channels in an annular shape, a plurality of needle rollers are installed in each group of the needle roller mounting channels, the two groups of the needle rollers are respectively connected with a first outer ring and a second outer ring in rolling connection, the first outer ring and the second outer ring are both provided with a first fixing hole, the two ends of the outer circumferential surface of the needle roller mounting ring frame are respectively provided with an annular fixing groove, the side wall of the annular fixing groove is provided with a second fixing hole connected with the needle roller mounting channel, a first retaining ring is installed at the end of the inner ring surface of the first outer ring, a second retaining ring matching with the first retaining ring is installed at the end of the inner ring surface of the second outer ring, and a connecting shaft is installed on the inner ring surface of the first retaining ring.

[0006] As a preferred technical solution of the present utility model, the first fixing hole and the annular fixing groove are communicated with each other.

[0007] As a preferred technical solution of the present utility model, the inner ring surface of the second outer ring is provided with a second installation groove for installing the second retaining ring.

[0008] As a preferred technical solution of the utility model, the inner ring surface of the first outer ring is provided with a first installation groove for installing the first retaining ring.

[0009] As a preferred technical solution of the utility model, a plurality of limiting grooves are provided at the end of the inner annular surface of the first retaining ring, and a plurality of connecting protrusions matching with the limiting grooves are provided on the circumferential surface of the connecting shaft.

[0010] As a preferred technical solution of the present utility model, an end of the circumferential surface of the connecting shaft away from the second retaining ring is provided with an external thread.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The bearing forms a double-row structure by arranging two groups of needle rollers and needle roller mounting channels in conjunction with the first outer ring and the second outer ring, which is convenient for adapting to double-raceway applications, not only improving equipment space, but also saving production costs. The first fixing hole, the annular fixing groove and the second fixing hole are convenient for injecting lubricating oil into the needle roller mounting channel, thereby maintaining the lubricity of the needle roller during long-term use and avoiding excessive wear of the needle roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the partial cross-section structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the first retaining ring of the utility model.

[0016] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the inner ring of the utility model.

[0017] In the figure: first outer ring 1, second outer ring 2, connecting protrusion 3, connecting shaft 4, first fixing hole 5, first retaining ring 6, limiting groove 7, needle roller 8, annular fixing groove 9, second retaining ring 10, needle roller mounting channel 11, needle roller mounting ring frame 12, inner ring 13, first mounting groove 14, second fixing hole 15, second mounting groove 16. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 , the utility model provides a technical solution:

[0020] A bolt roller bearing with double outer rings and double rows of needle rollers comprises an inner ring 13, the outer circumferential surface of the inner ring 13 is provided with a needle roller mounting ring frame 12, the front and rear ends of the needle roller mounting ring frame 12 are respectively provided with a group of needle roller mounting channels 11 in an annular shape, a plurality of needle rollers 8 are installed in each group of needle roller mounting channels 11, a first outer ring 1 and a second outer ring 2 are respectively connected to the two groups of needle rollers 8 in a rolling manner, the first outer ring 1 and the second outer ring 2 are both provided with a first fixing hole 5, an annular fixing groove 9 is respectively provided at both ends of the outer circumferential surface of the needle roller mounting ring frame 12, a second fixing hole 15 connected with the needle roller mounting channel 11 is provided on the side wall of the annular fixing groove 9, a first retaining ring 6 is installed at the end of the inner ring surface of the first outer ring 1, a second retaining ring 10 matching the first retaining ring 6 is installed at the end of the inner ring surface of the second outer ring 2, and a connecting shaft 4 is installed on the inner ring surface of the first retaining ring 6.

[0021] The first fixing hole 5 and the annular fixing groove 9 are communicated with each other.

[0022] The inner ring surface of the second outer ring 2 is provided with a second mounting groove 16 for mounting the second retaining ring 10 .

[0023] The inner ring surface of the first outer ring 1 is provided with a first mounting groove 14 for mounting the first retaining ring 6 .

[0024] A plurality of limiting grooves 7 are formed at the end of the inner annular surface of the first retaining ring 6 , and a plurality of connecting protrusions 3 cooperating with the limiting grooves 7 are formed on the circumferential surface of the connecting shaft 4 .

[0025] An end of the circumference of the connecting shaft 4 away from the second retaining ring 10 is provided with an external thread.

[0026] The inner ring 13 is fixed on the second retaining ring 10, and then the needle roller mounting ring frame 12 is sleeved on the outer circumference of the inner ring 13, and multiple needle rollers 8 are respectively installed in the corresponding needle roller mounting channels 11, and then the first outer ring 1 and the second outer ring 2 are installed on needle rollers 8 in different rows. The second mounting groove 16 can be used to limit the installation between the second retaining ring 10 and the second outer ring 2. The first retaining ring 6 is installed and connected with the first outer ring 1 through the first mounting groove 14, and then the first retaining ring 6 is installed on the inner ring surface of the second retaining ring 10. Threaded connection or plug-in can be adopted, and then the connecting shaft 4 is installed on the inner ring surface of the first retaining ring 6 through multiple connecting protrusions 3 and limiting grooves 7. Fixed plug-in, after a period of use, lubricating oil can be injected into the annular fixing grooves 9 at both ends of the needle roller mounting ring frame 12 through the first fixing hole 5, and then the lubricating oil is sent into each needle roller mounting channel 11 through multiple second fixing holes 15 to assist the needle roller 8 in lubrication and reduce the wear of the needle roller 8.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt roller bearing with double outer rings and double row needle rollers, comprising an inner ring (13), characterized in that: The outer circumferential surface of the inner ring (13) is provided with a needle roller mounting ring frame (12). A group of needle roller mounting channels (11) are provided in an annular shape at the front and rear ends of the needle roller mounting ring frame (12). A plurality of needle rollers (8) are installed in each group of the needle roller mounting channels (11). The first outer ring (1) and the second outer ring (2) are respectively connected to the two groups of the needle rollers (8) in a rolling manner. The first outer ring (1) and the second outer ring (2) are provided with a first fixing hole (5). An annular fixing groove (9) is provided at each end of the outer circumferential surface of the needle roller mounting ring frame (12). A second fixing hole (15) connected to the needle roller mounting channel (11) is provided on the side wall of the annular fixing groove (9). A first retaining ring (6) is installed at the end of the inner ring surface of the first outer ring (1). A second retaining ring (10) matched with the first retaining ring (6) is installed at the end of the inner ring surface of the second outer ring (2). A connecting shaft (4) is installed on the inner ring surface of the first retaining ring (6).

2. The bolt roller bearing with double outer rings and double row needle rollers according to claim 1, characterized in that: The first fixing hole (5) and the annular fixing groove (9) are in communication with each other.

3. The bolt roller bearing with double outer rings and double row needle rollers according to claim 1, characterized in that: The inner ring surface of the second outer ring (2) is provided with a second mounting groove (16) for mounting the second retaining ring (10).

4. The bolt roller bearing with double outer rings and double row needle rollers according to claim 1, characterized in that: The inner ring surface of the first outer ring (1) is provided with a first mounting groove (14) for mounting the first retaining ring (6).

5. The bolt roller bearing with double outer rings and double row needle rollers according to claim 1, characterized in that: The end of the inner annular surface of the first retaining ring (6) is provided with a plurality of limiting grooves (7), and the peripheral surface of the connecting shaft (4) is provided with a plurality of connecting protrusions (3) that cooperate with the limiting grooves (7).

6. The bolt roller bearing with double outer rings and double row needle rollers according to claim 1, characterized in that: An end of the circumferential surface of the connecting shaft (4) away from the second retaining ring (10) is provided with an external thread.

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