Needle roller combination bearing

Abstract

The utility model discloses a needle roller combination bearing and belongs to the technical field of needle roller bearings. The first inner shaft sleeve is arranged in the outer shaft sleeve; the second inner shaft sleeve is arranged on the first inner shaft sleeve; the long screw is taken out of the threaded cylinder, the threaded cylinder can be taken out of the through hole after the long screw is taken out of the threaded cylinder, at the moment, the second inner shaft sleeve can be detached from the first inner shaft sleeve, and after the second inner shaft sleeve is detached, the multiple roller pin bodies can be detached and replaced. And the second inner shaft sleeve and the first inner shaft sleeve are combined and mounted through threaded fit of the threaded cylinder and the long screw, so that the multiple roller pin main bodies are convenient to disassemble, and the convenience of disassembling and replacing the roller pin main bodies is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of needle roller bearings, and more specifically, to a combined needle roller bearing. Background Technique

[0002] A needle roller bearing is a roller bearing with cylindrical rollers. A composite roller bearing is assembled by two roller bearings, namely an axial roller bearing and a radial roller bearing. The volume of the bearing is reduced and the installation structure is simplified, thus reducing the manufacturing cost. The composite roller bearing has relatively large radial and axial load-carrying capacities, and the replaceability of each component is strong. It is increasingly applied in various gantry lifting systems.

[0003] Some patent documents of combined needle roller bearings are disclosed in the prior art. The Chinese patent with the application number CN202121573927.6 discloses a combined needle roller bearing, which solves the problem that the outer ring design of the bearing in the prior art is not reasonable enough and it is not convenient to install the bearing. A combined needle roller bearing includes an inner shaft sleeve and a plurality of needle rollers installed on the inner ring of the inner shaft sleeve. Clamping blocks are fixedly connected to both sides of the outer ring of the inner shaft sleeve. An outer shaft sleeve is sleeved on the outer ring of the inner shaft sleeve. Card slots adapted to the clamping blocks are opened on both sides of the inner ring of the outer shaft sleeve. A plurality of liquid guide holes penetrating the outer shaft sleeve are opened on the outer ring of the outer shaft sleeve along the circumferential direction of the outer shaft sleeve. Bearing installation grooves adapted to the bearings of the needle rollers are opened on both sides of the inner cavity of the inner shaft sleeve at the positions on both sides of each needle roller bearing. A limiting plate is arranged on one side of the top of each bearing installation groove. The structure of the utility model is reasonable and the installation is convenient, improving the assembly efficiency.

[0004] In the above patent, the assembly method of a plurality of needle rollers is relatively cumbersome, there are too many screws, and the convenience during disassembly is poor. Therefore, we propose a combined needle roller bearing. Content of the Utility Model

[0005] Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a combined needle roller bearing. In the utility model, the long screw is taken out from the threaded cylinder. When the long screw is taken out from the threaded cylinder, the threaded cylinder can be taken out from the through hole. At this time, the second inner shaft sleeve can be disassembled from the first inner shaft sleeve. When the second inner shaft sleeve is disassembled, a plurality of needle roller bodies can be disassembled and replaced. The second inner shaft sleeve and the first inner shaft sleeve are assembled and installed through the threaded cooperation of the threaded cylinder and the long screw, so as to facilitate the disassembly of a plurality of needle roller bodies and optimize the convenience of disassembly and replacement of the needle roller bodies.

[0007] Technical Solution

[0008] To solve the above problems, the utility model adopts the following technical solutions:

[0009] A needle roller combination bearing, comprising:

[0010] An outer shaft sleeve;

[0011] A first inner shaft sleeve, which is arranged inside the outer shaft sleeve;

[0012] A second inner shaft sleeve, which is arranged on the first inner shaft sleeve;

[0013] Needle roller bodies, which are arranged in plurality, and the plurality of needle roller bodies are all rotatably connected between the first inner shaft sleeve and the second inner shaft sleeve;

[0014] An installation mechanism, which is arranged on the first inner shaft sleeve and is connected to the second inner shaft sleeve.

[0015] As a preferred embodiment of the present utility model, the installation mechanism includes through holes, threaded barrels and long screws. The through holes, threaded barrels and long screws are all arranged in plurality. The plurality of through holes are all opened on the first inner shaft sleeve. The plurality of threaded barrels are all fixedly connected to the rear end of the second inner shaft sleeve, and the plurality of threaded barrels are movably inserted into the plurality of through holes. The plurality of long screws are threadedly connected into the plurality of threaded barrels.

[0016] As a preferred embodiment of the present utility model, two clamping grooves are opened inside the outer shaft sleeve. Snap rings are fixedly connected to the surfaces of the first inner shaft sleeve and the second inner shaft sleeve, and the two snap rings are clamped in the two clamping grooves.

[0017] As a preferred embodiment of the present utility model, a plurality of oil holes are opened on the surface of the outer shaft sleeve.

[0018] As a preferred embodiment of the present utility model, an oil groove is opened on the surface of the outer shaft sleeve.

[0019] As a preferred embodiment of the present utility model, the plurality of through holes, threaded barrels and long screws are all arranged in five.

[0020] Beneficial effects

[0021] Compared with the prior art, the advantages of the present utility model are as follows:

[0022] (1) In this solution, when it is necessary to disassemble the needle roller bodies, first turn over the outer shaft sleeve, and then take out the long screws from the threaded barrels. When the long screws are taken out from the threaded barrels, the threaded barrels can be taken out from the through holes. At this time, the second inner shaft sleeve can be disassembled from the first inner shaft sleeve. After the second inner shaft sleeve is disassembled, the plurality of needle roller bodies can be disassembled and replaced.

[0023] (2) In this solution, the clamping grooves are opened to facilitate clamping with the snap rings. The outer shaft sleeve, the first inner shaft sleeve and the second inner shaft sleeve are assembled and installed through the clamping of the clamping grooves and the snap rings. Description of the Drawings

[0024] Figure 1 is the front perspective view of the present utility model;

[0025] Figure 2 is the rear perspective view of the present utility model;

[0026] Figure 3 is the overall exploded view of the present utility model;

[0027] Figure 4 is the rear view of the second inner shaft sleeve of the present utility model.

[0028] Explanation of the reference numerals in the drawings:

[0029] 1. Outer shaft sleeve; 2. Oil hole; 3. Oil groove; 4. Card slot; 5. First inner shaft sleeve; 6. Second inner shaft sleeve; 7. Snap ring; 8. Through hole; 9. Threaded barrel; 10. Long screw; 11. Needle roller body. Detailed Description of the Preferred Embodiment

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment:

[0032] Please refer to Figures 1-4 , a needle roller combination bearing, comprising:

[0033] An outer shaft sleeve 1;

[0034] A first inner shaft sleeve 5, and the first inner shaft sleeve 5 is disposed inside the outer shaft sleeve 1;

[0035] A second inner shaft sleeve 6, and the second inner shaft sleeve 6 is disposed on the first inner shaft sleeve 5;

[0036] Needle roller bodies 11, and a plurality of needle roller bodies 11 are rotatably connected between the first inner shaft sleeve 5 and the second inner shaft sleeve 6.

[0037] In this embodiment, the combination of the first inner shaft sleeve 5 and the second inner shaft sleeve 6 is for facilitating the rotational connection of the needle roller body 11. Through the cooperation of the first inner shaft sleeve 5 and the second inner shaft sleeve 6, it is convenient to install the needle roller body 11. In the present utility model, the long screw 10 is taken out from the threaded barrel 9. After the long screw 10 is taken out from the threaded barrel 9, the threaded barrel 9 can be taken out from the through hole 8. At this time, the second inner shaft sleeve 6 can be disassembled from the first inner shaft sleeve 5. After the second inner shaft sleeve 6 is disassembled, multiple needle roller bodies 11 can be disassembled and replaced. The second inner shaft sleeve 6 and the first inner shaft sleeve 5 are assembled and installed through the threaded cooperation of the threaded barrel 9 and the long screw 10, thereby facilitating the disassembly of multiple needle roller bodies 11 and optimizing the convenience of disassembly and replacement of the needle roller body 11.

[0038] Specifically, the installation mechanism includes through holes 8, threaded barrels 9 and long screws 10. The through holes 8, threaded barrels 9 and long screws 10 are all provided in multiple numbers. Multiple through holes 8 are all opened on the first inner shaft sleeve 5. Multiple threaded barrels 9 are all fixedly connected to the rear ends of the second inner shaft sleeves 6, and multiple threaded barrels 9 are movably inserted into multiple through holes 8. Multiple long screws 10 are threadedly connected into multiple threaded barrels 9.

[0039] In this embodiment, the through holes 8 are opened to facilitate the insertion of the threaded barrels 9. The insertion of the threaded barrels 9 is to facilitate the threaded cooperation with the long screws 10. Through the threaded cooperation of the threaded barrels 9 and the long screws 10, it is convenient to install the first inner shaft sleeve 5 and the second inner shaft sleeve 6.

[0040] Specifically, two clamping grooves 4 are opened in the outer shaft sleeve 1. Snap rings 7 are fixedly connected to the surfaces of the first inner shaft sleeve 5 and the second inner shaft sleeve 6. The two snap rings 7 are clamped in the two clamping grooves 4.

[0041] In this embodiment, the clamping grooves 4 are opened to facilitate the clamping with the snap rings 7. The outer shaft sleeve 1, the first inner shaft sleeve 5 and the second inner shaft sleeve 6 are assembled and installed through the clamping of the clamping grooves 4 and the snap rings 7.

[0042] Specifically, a plurality of oil holes 2 are opened on the surface of the outer shaft sleeve 1.

[0043] In this embodiment, a plurality of oil holes 2 are opened on the surface of the outer shaft sleeve 1. The oil holes 2 are opened to facilitate the addition of lubricating oil.

[0044] Specifically, an oil groove 3 is opened on the surface of the outer shaft sleeve 1.

[0045] In this embodiment, an oil groove 3 is opened on the surface of the outer shaft sleeve 1. The oil groove 3 is opened to facilitate the lubricating oil to flow into the oil holes 2.

[0046] Specifically, the multiple through holes 8, threaded barrels 9 and long screws 10 are all provided in five numbers.

[0047] In this embodiment, the number of through holes 8, threaded cylinders 9 and long screws 10 are all set to five.

[0048] Working principle: When it is necessary to disassemble the needle roller body 11, first turn the outer shaft sleeve 1 over, and then take out the long screw 10 from the threaded cylinder 9. After the long screw 10 is taken out from the threaded cylinder 9, the threaded cylinder 9 can be taken out from the through hole 8. At this time, the second inner shaft sleeve 6 can be disassembled from the first inner shaft sleeve 5. After the second inner shaft sleeve 6 is disassembled, the plurality of needle roller bodies 11 can be disassembled and replaced.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A needle roller combination bearing, characterized in that, Comprising: Outer shaft sleeve (1); First inner shaft sleeve (5), the first inner shaft sleeve (5) is arranged inside the outer shaft sleeve (1); Second inner shaft sleeve (6), the second inner shaft sleeve (6) is arranged on the first inner shaft sleeve (5); Needle roller bodies (11), the needle roller bodies (11) are provided in plurality, and the plurality of needle roller bodies (11) are all rotatably connected between the first inner shaft sleeve (5) and the second inner shaft sleeve (6); Mounting mechanism, the mounting mechanism is arranged on the first inner shaft sleeve (5) and is connected to the second inner shaft sleeve (6); The mounting mechanism includes through holes (8), threaded cylinders (9) and long screws (10), the through holes (8), threaded cylinders (9) and long screws (10) are all provided in plurality, the plurality of through holes (8) are all opened on the first inner shaft sleeve (5), the plurality of threaded cylinders (9) are all fixedly connected to the rear end of the second inner shaft sleeve (6), and the plurality of threaded cylinders (9) are movably inserted into the plurality of through holes (8), and the plurality of long screws (10) are threadedly connected into the plurality of threaded cylinders (9); Two clamping grooves (4) are opened inside the outer shaft sleeve (1), clamping rings (7) are fixedly connected to the surfaces of the first inner shaft sleeve (5) and the second inner shaft sleeve (6), and the two clamping rings (7) are clamped in the two clamping grooves (4); A plurality of oil holes (2) are opened on the surface of the outer shaft sleeve (1); An oil groove (3) is opened on the surface of the outer shaft sleeve (1).

2. The needle roller combination bearing according to claim 1, characterized in that: The plurality of through holes (8), threaded cylinders (9) and long screws (10) are all provided in five.

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