CN211175051U

CN211175051U - Crankshaft thrust plate forced lubrication structure

Info

Publication number: CN211175051U
Application number: CN201921554084.8U
Authority: CN
Inventors: 林铁坚; 何化; 余晓强; 谭金富; 徐雪松
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-08-04
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a crankshaft thrust piece force-feed lubrication structure, including organism bearing frame and bearing cap, be provided with bolt hole seat on the bearing cap, the bearing cap passes through the bolt and installs in organism bearing frame bottom, and upper bearing shell and lower bearing shell are installed respectively to the inner peripheral surface of organism bearing frame and bearing cap, install thrust piece, its characterized in that on the both sides face of bearing cap: the machine body main oil duct is arranged in the machine body bearing seat, a through hole is formed in the middle of the outer peripheral surface of the upper bearing bush, an arc-shaped oil storage tank is arranged on the inner peripheral surface of the upper bearing bush, and the middle of the arc-shaped oil storage tank is communicated with the machine body main oil duct through the through hole; an oil passage independent of the bolt hole in the bolt hole seat is formed in the bearing cap, one end of the oil passage is communicated with the tail end of the arc-shaped oil storage groove of the upper bearing bush, and the other end of the oil passage is communicated with the side face of the bearing cap contacted with the thrust plate. The utility model discloses enable machine oil and flow rapidly and carry out abundant timely lubrication to the thrust piece, reduce the wearing and tearing that strike and friction caused, extension thrust piece life-span.

Description

Crankshaft thrust plate forced lubrication structure

Technical Field

The utility model relates to an engine parts technical field specifically is a crankshaft thrust piece force-feed lubrication structure.

Background

The hybrid electric vehicle has the characteristic of frequent starting and stopping, the engine clutch can be correspondingly frequently engaged and disengaged, and the crankshaft thrust plate can be subjected to the impact action transmitted by the flywheel and the crankshaft. In the prior art, the thrust plate is lubricated less, various oil storage structures are generally required to be arranged, and the mode of entering and exiting oil from a threaded hole belongs to one of the oil storage structures. Due to the way the oil is fed in and out of the threaded hole, the following drawbacks exist: 1. the engine oil needs to flow through a thread gap, has large resistance and needs to additionally fill a cavity at the bottom of the threaded hole, so that the engine oil cannot be timely conveyed to the thrust plate for lubrication, the thrust plate is seriously abraded, and the service life is short; 2. the fastening ability of the bolt is weakened by the lubricating action of the engine oil.

SUMMERY OF THE UTILITY MODEL

To above-mentioned current defect, the utility model provides a crankshaft thrust piece force-feed lubrication structure makes machine oil flow rapidly and carries out abundant timely lubrication to the thrust piece, reduces the wearing and tearing that strike and friction caused, extension thrust piece life-span.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a crankshaft thrust plate forced lubrication structure comprises a machine body bearing seat and a bearing cover, wherein a bolt hole seat is arranged on the bearing cover, the bearing cover is installed at the bottom of the machine body bearing seat through a bolt, an upper bearing bush and a lower bearing bush are respectively installed on the inner circumferential surfaces of the bearing seat and the bearing cover, and thrust plates are installed on two side surfaces of the bearing cover; the machine body main oil duct is arranged in the machine body bearing seat, a through hole is formed in the middle of the outer peripheral surface of the upper bearing bush, an arc-shaped oil storage tank is formed in the inner peripheral surface of the upper bearing bush, and the middle of the arc-shaped oil storage tank is communicated with the machine body main oil duct through the through hole; an oil passage independent of the bolt hole in the bolt hole seat is formed in the bearing cover, one end of the oil passage is communicated with the tail end of the arc-shaped oil storage groove of the upper bearing bush, and the other end of the oil passage is communicated with the side face of the bearing cover contacted with the thrust plate.

Specifically, the oil passage comprises a vertical oil passage and a straight oil passage which are communicated with each other, the vertical oil passage is parallel to the bolt hole in the bolt hole seat, and the straight oil passage is perpendicular to the side face, in contact with the thrust plate, of the bearing cover.

Specifically, the oil passage comprises an oil passage inlet arranged above the bolt hole seat, an oil passage is formed in the edge of the oil passage inlet, and the arc-shaped oil storage tank is communicated with the oil passage inlet through the oil passage inlet.

Specifically, a vertical groove is formed in the inner end face of the thrust plate, which is in contact with the side face of the bearing cover.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses through designing the machine oil passageway that processes independent of bearing cap screw hole on the main shaft bearing cap, make machine oil flow from independent passageway and carry, flow resistance is little, and the passageway volume is little to can flow rapidly to the thrust plate in time lubricate the thrust plate, reduce the wearing and tearing that impact and friction caused, prolong the thrust plate life-span; in addition, the engine oil does not flow through the threaded hole of the bearing cover, so that the lubricating effect between the bolt and the threaded hole is reduced, and the fastening effect of the bolt is prevented from being weakened due to the lubricating effect of the engine oil.

Drawings

Fig. 1 is a schematic view of the structure lubrication of the embodiment of the present invention.

Fig. 2 is the schematic diagram of the upper bearing bush of the utility model.

Fig. 3 is a schematic view of the lower bearing bush of the present invention.

Fig. 4 is a schematic view of the lower thrust plate of the present invention.

Fig. 5 is a schematic view of the bearing cap of the present invention.

In the figure, 1-machine body bearing seat, 2-bearing cover, 3-upper bearing bush, 4-lower bearing bush, 5-thrust plate, 6-machine body main oil channel, 7-through hole, 8-arc oil storage tank, 9-oil channel, 10-vertical oil channel, 11-straight oil channel, 12-oil channel inlet, 13-oil channel and 14-vertical groove.

Detailed Description

In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1-5, the utility model provides a crankshaft thrust plate forced lubrication structure, including organism bearing frame 1 and bearing cap 2, be provided with bolt hole seat on the bearing cap 2, bearing cap 2 installs in organism bearing frame 1 bottom through the bolt, organism bearing frame 1 and bearing cap 2 cover each other and close, form the seat hole of crankshaft, install upper bearing bush 3, lower bearing bush 4 in the inner peripheral of organism bearing frame 1, bearing cap 2 respectively, upper bearing bush 3, lower bearing bush 4 cover each other, are used for forming the revolute pair with the crankshaft; the axial both sides of bearing cap 2 are the thrust face of bearing cap 2, and the thrust face of laminating respectively on both sides is installed thrust piece 5 for when guaranteeing crankshaft axial rotation, prevent crankshaft axial float. As shown in fig. 2, a main oil gallery 6 is provided inside the bearing housing 1, a through hole 7 communicating with the main oil gallery 6 is provided in the middle of the outer circumferential surface of the upper bearing 3, an annular oil storage groove 8 communicating with the through hole 7 is provided in the inner circumferential surface of the upper bearing 3, and the annular oil storage groove 8 extends to both ends along the inner circumferential surface of the upper bearing 3 in an annular shape; as shown in fig. 1, two oil passages 9 independent of the bolt holes in the bolt hole seats are formed in the bearing cap 2, one end of each oil passage 9 is communicated with the tail end of the arc-shaped oil storage groove 8 of the upper bearing shell 3, and the other end of each oil passage 9 is communicated with the side face of the bearing cap 2 contacted with the thrust plate 5.

The principle of the utility model is as follows: when the engine runs, lubricating oil enters the through hole 7 through the main oil duct 6 of the engine body, and enters the annular oil storage groove 8 along with the continuous increase of the lubricating oil, and at the moment, the bearing bush and the whole crankshaft can be lubricated through the rotation of the crankshaft; because the crankshaft and the annular oil storage groove 8 of the upper bearing bush 3 form a sealed channel, lubricating oil flows to two ends under pressure along the arc-shaped oil storage groove 8, and then quickly enters the oil passage 9; because oil duct 9 is independent of bearing cap bolt hole and is seted up, be different from the current mode that adopts bolt hole oil feed, make machine oil flow from independent passageway and carry, flow resistance is little, and the passageway volume is little to can flow to the thrust plate of in time lubricating on the bearing cap 2 side of contacting with thrust plate 5 along oil duct 9 rapidly, thereby guarantee the formation of surface oil film, satisfy the lubricated demand between the thrust surface of thrust plate 5 and the thrust surface of bearing cap 2, reached force-feed lubrication's purpose.

As a preferable aspect of the present embodiment, for convenience of machining, the oil passage 9 includes a vertical oil passage 10 and a straight oil passage 11 that are communicated with each other, the vertical oil passage 10 is parallel to the bolt hole of the bearing cap 2, and the straight oil passage 11 is perpendicular to the side surface of the bearing cap 2 that is in contact with the thrust plate 5.

As a preferable solution of the present embodiment, as shown in fig. 5, the oil passage 9 includes an oil passage inlet 12 disposed above the bolt hole seat, an oil passage groove 13 is further disposed on the oil passage inlet 12, the oil passage groove 13 extends along the radial direction of the bearing cover 2 to a seat hole edge near the bearing cover 2, and the arc-shaped oil storage groove 8 is communicated with the oil passage inlet 12 through the oil passage groove 13. Because the arc-shaped oil storage tank 8 and the oil duct inlet 12 are not on the same vertical surface, the hole diameter is only partially intersected, and the precision requirement between holes is high in the processing and assembling processes, the radial oil passing groove 13 is arranged as a further preferable scheme of the embodiment, and the matching of the holes and the linear grooves ensures that the engine oil of the arc-shaped oil storage tank 8 smoothly flows into the oil duct inlet 12.

As a preferable mode of the present embodiment, as shown in fig. 4, a vertical groove 14 through which lubricating oil flows is provided on an inner end surface of the thrust plate 5 that contacts a side surface of the bearing cap 2.

Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a crankshaft thrust piece force-feed lubrication structure, includes organism bearing frame (1) and bearing cap (2), be provided with bolt hole seat on bearing cap (2), bearing cap (2) are installed in organism bearing frame (1) bottom through the bolt, and upper bearing bush (3) and lower bearing bush (4) are installed respectively to the inner peripheral surface of organism bearing frame (1) and bearing cap (2), install thrust piece (5), its characterized in that on the both sides face of bearing cap (2):

the engine body main oil duct (6) is arranged in the engine body bearing seat (1), a through hole (7) is formed in the middle of the outer peripheral surface of the upper bearing bush (3), an arc-shaped oil storage tank (8) is formed in the inner peripheral surface of the upper bearing bush (3), and the middle of the arc-shaped oil storage tank (8) is communicated with the engine body main oil duct (6) through the through hole (7); an oil passage (9) independent of a bolt hole in the bolt hole seat is formed in the bearing cover (2), one end of the oil passage (9) is communicated with the tail end of an arc-shaped oil storage groove (8) of the upper bearing bush (3), and the other end of the oil passage is communicated with the side face of the bearing cover (2) contacted with the thrust plate (5).

2. The crankshaft thrust plate forced lubrication structure according to claim 1, characterized in that: the oil passing channel (9) comprises a vertical oil channel (10) and a straight oil channel (11) which are communicated with each other, the vertical oil channel (10) is parallel to a bolt hole in the bolt hole seat, and the straight oil channel (11) is perpendicular to the side face, contacted with the thrust plate (5), of the bearing cover (2).

3. The crankshaft thrust plate forced lubrication structure according to claim 1, characterized in that: the oil passage (9) comprises an oil passage inlet (12) arranged above the bolt hole seat, an oil passage groove (13) is formed in the edge of the oil passage inlet (12), and the arc-shaped oil storage tank (8) is communicated with the oil passage inlet (12) through the oil passage groove (13).

4. The crankshaft thrust plate forced lubrication structure according to claim 1, characterized in that: and a vertical groove (14) is formed in the inner end surface of the thrust plate (5) which is in contact with the side surface of the bearing cover (2).