CN210087827U

CN210087827U - Sliding bearing

Info

Publication number: CN210087827U
Application number: CN201920877220.0U
Authority: CN
Inventors: 刘卫军
Original assignee: China Shenhua Energy Co Ltd; Beijing Guohua Electric Power Co Ltd; Tianjin Guohua Panshan Power Generation Co Ltd
Current assignee: China Shenhua Energy Co Ltd; Beijing Guohua Electric Power Co Ltd; Tianjin Guohua Panshan Power Generation Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-02-18
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a sliding bearing, including cavity and be the bearing framework (20) of tube-shape and the sealing device of the one end setting of bearing framework (20), the one end of bearing framework (20) is provided with the external screw thread, sealing device includes through threaded connection sealing end cover (10) on bearing framework (20). The sealing end cover ensures that the sliding bearing has good sealing performance while guaranteeing the lubricating effect, and can adapt to occasions with high dust and heavy load.

Description

Sliding bearing

Technical Field

The utility model relates to a tipper field specifically relates to a slide bearing.

Background

At present, all sliding bearings of driving pinion gears of C-shaped car dumper bodies are solid self-lubricating bearings without sealing devices, the bearings are made of cast brass embedded graphite columns, the bearings are designed to be used on main driving pinion gears of car dumper bodies with the purposes of maintenance free and oiling free, however, in actual use, the self-lubricating bearings are found to have serious abnormal sound and short service life in operation, and the main reason is that the self-lubricating bearings are not suitable for occasions with high dust and heavy load, such as car dumpers. In addition, because the solid self-lubricating bearing is not provided with a sealing device, a gap is formed between the bearing and the shaft after the bearing is abraded, and a large amount of coal dust and water enter the gap, so that the abrasion of the bearing is accelerated, and finally the bearing is abraded and scrapped in a short period.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, provide a slide bearing, can adapt to high dust, heavy load work occasion and use long service life.

In order to achieve the above object, the utility model provides a sliding bearing, include cavity and be the bearing framework of tube-shape and the sealing device that the one end of bearing framework set up, the one end of bearing framework is provided with the external screw thread, sealing device includes through threaded connection sealing end cover on the bearing framework.

Preferably, the end cover is an annular structure disposed around one end of the bearing frame, and the sealing device further includes a sealing ring disposed circumferentially inside the annular structure.

Preferably, the end cap comprises a circular cap body and a side wall extending axially along the circumference of the circular cap body, and the side wall is connected to the bearing frame through threads.

Preferably, an anti-rotation structure is provided between the end seal cover and the bearing frame.

Preferably, the anti-rotation structure is a jackscrew provided at a threaded connection between the end seal cover and the bearing frame.

Preferably, the bearing framework is provided with an oil nozzle, the inner side wall of the bearing framework is provided with an oil groove, and the oil groove is communicated with the oil nozzle.

Preferably, the oil groove comprises a first oil groove communicated with the oil nozzle, and the first oil groove is an annular groove extending along the circumferential direction of the inner wall of the bearing framework.

Preferably, the oil groove still includes a plurality of second oil grooves, and is a plurality of the second oil groove all follows bearing frame's axial extension and edge bearing frame's inner wall circumference interval sets up, first oil groove intercommunication is a plurality of the second oil groove.

Preferably, the second oil groove is a strip-shaped groove with two closed ends.

Through above-mentioned technical scheme, bearing frame's one end sets up sealing device, bearing frame's one end is provided with the external screw thread, sealing device includes through threaded connection sealing end cover on the bearing frame. The sealing end cover ensures that the sliding bearing has good sealing performance while guaranteeing the lubricating effect, and can adapt to occasions with high dust and heavy load.

Drawings

Fig. 1 is a schematic structural view of a first preferred embodiment of a plain bearing of the present invention;

fig. 2 is a schematic structural view of a second preferred embodiment of the sliding bearing of the present invention.

Description of the reference numerals

10-sealing end cover, 11-anti-rotation structure, 12-sealing ring, 13-round cover body, 20-bearing framework, 30-oil injection nozzle, 41-second oil groove, 42-first oil groove

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1 and fig. 2, the sliding bearing of the present invention includes a hollow and cylindrical bearing frame 20, a sealing device is provided at one end of the bearing frame 20, an external thread is provided at one end of the bearing frame 20, and the sealing device includes a sealing end cap 10 connected to the bearing frame 20 by a thread. One end of the bearing framework 20 is sealed by the sealing device, and the sealing device can prevent dust and water in the external environment from entering the inside of the bearing, so that the service life of the sliding bearing is prolonged, different from the open type bearing end part in the prior art.

Preferably, the oil nozzle 30 is disposed on the bearing frame 20, and an oil groove is disposed on an inner sidewall of the bearing frame 20 and is communicated with the oil nozzle 30. The self-lubricating graphite column in the prior art is eliminated, lubricating oil is injected into an oil groove in the bearing framework 20 from the oil injection nozzle 30 instead, flows along the oil groove, and is covered between the shaft and the inner wall of the bearing framework 20 through the rotation of the shaft erected in the bearing framework 20, so that the lubricating effect is achieved.

As shown in fig. 1, in the first preferred embodiment of the present invention, when the sliding bearing is used for supporting the output shaft end of the driving pinion of the car dumper body, the end cover 10 is an annular structure disposed around one end of the bearing frame 20, and the sealing device further includes a sealing ring 12 disposed circumferentially inside the annular structure. The two ends of the sealing end cover 10 are both in an open shape, one end of the sealing end cover is provided with an internal thread matched with the external thread of the bearing framework 20, and the inner side of the other end of the sealing end cover is provided with a sealing ring 12 along the circumferential direction; the seal ring 12 may be configured in any form, such as a rubber seal ring, a felt seal ring, etc., as long as it can achieve an interference fit with a shaft mounted in the bearing frame 20, and preferably, the seal ring 12 is configured as a double-lip rubber seal ring; the seal ring 12 is in interference fit with a shaft erected in the bearing framework 20, so that dust and water in the external environment cannot enter the inside of the bearing, and the service life of the sliding bearing is prolonged.

As shown in fig. 2, in the second preferred embodiment of the present invention, when the sliding bearing is used to support the non-output shaft end of the driving pinion of the car dumper body, the end cover 10 includes a circular cover 13 and a side wall extending along the circumferential axial direction of the circular cover 13, and the side wall is screwed on the bearing frame 20. The inner side of the side wall of the sealing end cover 10 is provided with an internal thread which is matched and connected with the external thread of the bearing framework 20, and after the sealing end cover 10 is connected with the bearing framework 20, one end of the sealing end cover is completely covered and sealed by the circular cover body 13; during the use, the pedestal is established and is rotated in bearing framework 20, and circular lid 13 covers bearing framework 20's inner space completely for inside dust, the unable bearing that gets into of water in the external environment, thereby prolonged sliding bearing's life, in addition, circular lid 13 has played the effect of oil cup simultaneously, has the function of forcing to refuel.

Returning now to fig. 1 and 2, an anti-rotation structure 11 is provided between the end cap 10 and the bearing frame 20. The rotation preventing structure 11 may be provided in plurality along the circumferential direction of the end cap 10, so as to better prevent the problem of looseness caused by the rotation of the end cap 10 with respect to the bearing frame 20.

The anti-rotation structure 11 may be in any form as long as the end cap 10 can be prevented from rotating relative to the bearing frame 20, and preferably, the anti-rotation structure 11 is a jackscrew provided at a threaded connection between the end cap 10 and the bearing frame 20.

The oil groove may be provided in any form as long as it can fill the space between the shaft and the inner wall of the bearing frame 20 with lubricating oil, and preferably, the oil groove includes a first oil groove 42 communicating with the oil nipple 30, and the first oil groove 42 is an annular groove extending circumferentially along the inner wall of the bearing frame 20.

In addition, the oil groove still includes a plurality of second oil grooves 41, and a plurality of second oil grooves 41 all extend along the axial of bearing framework 20 and set up along the inner wall circumference interval of bearing framework 20, and first oil groove 42 communicates a plurality of second oil grooves 41. Lubricating oil gets into circumference from the oil filler point and sets up behind the first oil groove 42 of bearing framework 20 inner wall, flows along first oil groove 42, and during the second oil groove 41 of route and first oil groove 42 intercommunication, lubricating oil reposition of redundant personnel partly gets into second oil groove 41 for along circumference, axial all fill lubricating oil in bearing framework 20, play good lubricated effect.

Preferably, the second oil groove 41 is a strip-shaped groove with two closed ends. The two ends of the second oil groove 41 are sealed, so that lubricating oil can be prevented from overflowing from the end of the oil groove close to the oil filling nozzle during oil filling, and the lubricating effect is improved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A sliding bearing is characterized by comprising a hollow and cylindrical bearing framework (20) and a sealing device arranged at one end of the bearing framework (20), wherein an external thread is arranged at one end of the bearing framework (20), and the sealing device comprises a sealing end cover (10) which is connected onto the bearing framework (20) through a thread.

2. A plain bearing according to claim 1, wherein the sealing end cap (10) is an annular structure arranged around one end of the bearing frame (20), the sealing means further comprising a sealing ring (12) arranged circumferentially inside the annular structure.

3. A plain bearing according to claim 1, wherein the end closure (10) comprises a circular cover body (13) and a side wall extending axially along the circumference of the circular cover body (13), the side wall being screwed onto the bearing frame (20).

4. A plain bearing according to claim 1, characterized in that an anti-rotation structure (11) is provided between the end closure (10) and the bearing frame (20).

5. A plain bearing according to claim 4, characterized in that the anti-rotation structure (11) is a jackscrew provided at the threaded connection between the end closure (10) and the bearing frame (20).

6. A plain bearing according to any one of claims 1-5, wherein the bearing frame (20) is provided with a filler nipple (30), and wherein the bearing frame (20) is provided with an oil groove in its inner side wall, said oil groove communicating with the filler nipple (30).

7. A plain bearing according to claim 6, in which the oil groove comprises a first oil groove (42) communicating with the oil nipple (30), the first oil groove (42) being an annular groove extending circumferentially along an inner wall of the bearing frame (20).

8. A plain bearing according to claim 7, wherein the oil groove further comprises a plurality of second oil grooves (41), the plurality of second oil grooves (41) each extending in an axial direction of the bearing frame (20) and being circumferentially spaced along an inner wall of the bearing frame (20), the first oil groove (42) communicating with the plurality of second oil grooves (41).

9. A sliding bearing according to claim 8, wherein the second oil groove is a closed-ended strip groove.