CN216519531U

CN216519531U - Thin oil lubricating structure for transmission shaft of press machine

Info

Publication number: CN216519531U
Application number: CN202123446622.1U
Authority: CN
Inventors: 姚建辉; 洪卫华
Original assignee: Jinchen Machinery Co ltd
Current assignee: Jinchen Machinery Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-13
Anticipated expiration: 2031-12-29

Abstract

The application is a thin oil lubrication structure for a transmission shaft of a press machine, which belongs to the field of press machines, two ends of the transmission shaft are respectively arranged on a frame in a rotating way through a bearing assembly, the bearing assembly comprises a bearing body, a bearing bush and a bearing cover, the bearing bush is provided with an arc notch running through the inner circumferential wall and the outer circumferential wall of the bearing bush, the arc notch on the bearing body and the arc notch on the bearing bush are overlapped at the same position corresponding to the transmission shaft, the central angles of the arc notch and the arc notch on the bearing bush are the same, an oil slinger is sleeved in the periphery of the transmission shaft corresponding to the arc notch, and the lowest position of the oil slinger is not higher than the liquid level of lubricating oil; the oil carrying quantity of the lubricating oil is large in a mode that the lubricating oil is thrown by an oil slinger, the lubricating oil can be quickly dispersed between a transmission shaft and a bearing bush, and the lubricating timeliness is good; in addition, the mode of throwing the lubricating oil into the oil pump is not required to be provided with other equipment such as an oil pump and an oil pipe, the oil cavity can be directly arranged on the frame, and the structure is simpler.

Description

Thin oil lubricating structure for transmission shaft of press machine

Technical Field

The utility model relates to the field of press machinery, in particular to a thin oil lubricating structure for a transmission shaft of a press machine.

Background

The mechanical press is the main equipment of the forging process, and most of the mechanical presses on the market at present adopt a two-stage transmission mode with an intermediate transmission shaft, so that the intermediate transmission shaft becomes the most important part in a transmission system of the mechanical press. The middle transmission shaft of the press is supported and erected by a left bearing assembly and a right bearing assembly which are arranged on a frame, under certain working conditions with special requirements, the middle transmission shaft of the press is supported by a rolling bearing assembly, and is supported by a sliding bearing assembly. And be the most serious position of production sliding friction between the axle bush of present intermediate drive axle and bearing, present lubrication to here is generally through setting up the oil filler point on the bearing, through the mesh of lubricating is played to the downthehole injection lubrication oil of oil filler, but because the reason of the structure of here, so the oil filler point diameter of here is very little, when the oiling, oiling pressure is big, and the oil filler point is very little often just can make that fluid is whole to scatter on the face of action of axle bush and transmission shaft under longer time, it is poor to lubricate the timeliness, in addition, the mode of oil filler point oiling still need be equipped with corresponding oil pump alone, oil pipe etc., lubricating structure's complexity has been increased.

SUMMERY OF THE UTILITY MODEL

The friction between the middle transmission shaft of current press also the axle bush generally adopts the oiling mode of oil filler point to realize lubrication between the two, and the mode of oil filler point oiling has the big problem of oiling pressure, in addition, the oil filler point diameter is very little, so can scatter along with the rotation of transmission shaft under the longer time after injecting lubricating oil in the oil filler point, lubricated timeliness is poor, and simultaneously, the mode that lubricating oil was injected into to this kind of oil filler point still need be equipped with corresponding oil pump, oil pipe etc., lubricating structure's complexity has been increased, this application designs a thin oil lubricating structure for press transmission shaft, its specifically adopted technical scheme is:

a thin oil lubrication structure for a transmission shaft of a press machine is characterized in that two ends of the transmission shaft are respectively and rotatably arranged on a frame through a bearing assembly, the bearing assembly comprises a bearing body, a bearing bush and a bearing cover, a cavity is formed between the bearing cover and the frame, the bearing body is arranged in the cavity and sleeved on the transmission shaft, the bearing bush is arranged between the bearing body and the transmission shaft, an oil storage area is arranged at the position of the cavity, which corresponds to the lower part of the transmission shaft, the bearing comprises a bearing body, a bearing bush and a bearing ring, wherein the bearing body is provided with an arc notch penetrating through an inner circumferential wall and an outer circumferential wall of the bearing body, the bearing bush is provided with an arc notch penetrating through the inner circumferential wall and the outer circumferential wall of the bearing bush, the arc notch on the bearing body and the arc notch on the bearing bush are overlapped at the same position corresponding to a transmission shaft, the central angle is the same, the central angle is larger than 180 degrees, the periphery of the transmission shaft is sleeved with an oil slinger corresponding to the arc notch, and the oil slinger can be in contact with lubricating oil stored in an oil storage area to throw the lubricating oil between the bearing bush and the transmission shaft.

Preferably, the bearing cover is further provided with an oil filling hole, and the oil filling hole is aligned with the arc-shaped notch on the bearing body.

Preferably, the bearing cover is provided with a cover plate corresponding to the oil filling port of the oil filling hole.

Preferably, the cover plate is provided with a vent pipe which communicates the cavity with the outside atmosphere.

Preferably, the arc-shaped notches on the bearing bodies are two, the arc-shaped notches on the bearing bushes are two, the arc-shaped notches on the two bearing bushes are arranged at intervals along the axial direction of the transmission shaft, the arc-shaped notches on the two bearing bodies are arranged at intervals along the axial direction of the transmission shaft, the oil slingers are two, and the two oil slingers are correspondingly sleeved on the periphery of the corresponding arc-shaped notches of the transmission shaft.

Preferably, be equipped with the oil filler point on the apron, the oil filler point sets up two, and two oil filler points correspond two arc breachs and set up.

Preferably, the oil storage area is an oil cavity sinking into the frame, the number of the oil cavities is two, the two oil cavities are respectively communicated with the cavity to form a part of the cavity, and the two oil cavities are communicated with each other.

Preferably, a liquid level and liquid temperature meter is arranged at a position of the machine frame corresponding to the oil cavity and used for detecting the liquid level and the oil temperature of lubricating oil in the cavity.

Preferably, the bearing cover and the two end faces of the frame are respectively provided with a sealing component for sealing the cavity, so that the cavity forms a sealed cavity.

According to the utility model, the arc-shaped notch is formed in the bearing body, the oil slinger is sleeved in the corresponding arc-shaped notch of the transmission shaft, the rotation of the transmission shaft is utilized to further drive the oil slinger to rotate on the transmission shaft, the rotation is very slow and is different from the rotation of the transmission shaft, the lubricating oil in the oil cavity is brought between the transmission shaft and the bearing bush in the process of slow rotation, the oil brought by the lubricating oil in the mode that the lubricating oil is thrown by the oil slinger is large in oil quantity, the lubricating oil can be quickly dispersed between the transmission shaft and the bearing bush, and the lubrication timeliness is good; in addition, the mode of throwing the lubricating oil into the oil tank can be realized by directly arranging an oil cavity on the machine frame without arranging other equipment such as an oil pump, an oil pipe and the like, and the structure is simpler.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a cross-sectional view a-a of fig. 1.

In the figure, the bearing comprises a frame 1, a frame 2, a sealing assembly 3, a transmission shaft 4, a bearing cover 5, an oil filling hole 6, an arc-shaped notch 7, a cavity 8, an oil slinger 9, lubricating oil 10, an oil cavity 11, a bearing assembly 1101, a bearing bush 1102, a bearing body 12 and a liquid level liquid thermometer.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in figures 1-2, the application is a thin oil lubrication structure for a transmission shaft of a press, which is mainly suitable for lubrication in medium-speed, low-speed, medium-size and large-size warm forging and hot die forging press equipment. Wherein, the both ends of the transmission shaft 3 of the press are respectively rotatably arranged on the frame 1 through the bearing assembly 11, and because the two bearing assemblies 11 at the both ends of the transmission shaft 3 have the same structure in the application, the application is introduced with the bearing assembly 11 at the left end of the transmission shaft 3. The bearing assembly 11 specifically includes a bearing body 1102, a bearing shell 1101, and a bearing cap 4 in the present application. Bearing cap 4 and frame 1 fixed connection, and be formed with cavity 7 between the two, bearing body 1102 is fixed on frame 1 and is located cavity 7, and bearing body 1102 cover is established on transmission shaft 3 simultaneously, and axle bush 1101 sets up between bearing body 1102 and transmission shaft 3, and the position that corresponds transmission shaft 3 below at this cavity 7 is the oil storage area for store lubricating oil 9, and lubricating oil 9 has certain fluid height. The bearing body 1102 is provided with an arc-shaped notch 6 penetrating through the inner circumferential wall and the outer circumferential wall of the bearing bush 1101, the bearing bush 1101 is provided with an arc-shaped notch 6 penetrating through the inner circumferential wall and the outer circumferential wall of the bearing bush 1101, the arc-shaped notch 6 on the bearing body 1102 and the arc-shaped notch 6 on the bearing bush 1101 are overlapped at the same position corresponding to the transmission shaft 3, the central angle is larger than 180 degrees, an oil slinger 8 is sleeved in the arc-shaped notch 6 corresponding to the periphery of the transmission shaft 3, when the oil slinger 8 rotates to the lowest position, the lowest position is not higher than the liquid level of lubricating oil 9 stored in an oil storage area, so that the lowest part of the oil slinger 8 can be always ensured to be positioned in the lubricating oil 9 and soaked with the lubricating oil 9, when the transmission shaft 3 rotates, the oil slinger 8 can rotate on the transmission shaft 3 at a slower speed, the rotating speed of the oil slinger 8 is asynchronous with the rotating speed of the transmission shaft 3, as long as the oil slinger 8 rotates on the transmission shaft 3, the lubricating oil 9 at the bottom is thrown between the transmission shaft 3 and the bearing bush 1101 at the arc-shaped notch 6, the quantity of the lubricating oil 9 thrown between the lubricating oil 9 and the transmission shaft 3 and the bearing bush 1101 is large, the oil is quickly scattered by the rotating transmission shaft 3, the lubrication timeliness is good, the transmission shaft 3 and the bearing bush 1101 are fully lubricated, and meanwhile, the lubricating oil 9 lubricates the transmission shaft 3 and the bearing bush 1101 in a throwing mode, so that the structure is simple, and an oil pump or an oil pipe and the like do not need to be additionally arranged.

It should be noted that although the slinger 8 has a certain gravity, the slinger 8 can be thrown up by the friction force between the transmission shaft 3 and the slinger 8, and even if a large amount of lubricating oil 9 is adhered to the slinger 8, the lubricating oil 9 can lubricate the transmission shaft 3, but the thin lubricating oil 9 has a certain viscosity, so that the slinger 8 can be thrown up and rotated during the rotation of the transmission shaft 3.

Further, when the oil slinger 8 is constantly throwing lubricating oil 9 to between transmission shaft 3 and the axle bush 1101, lubricating oil 9 in the oil storage area constantly reduces, for the convenience of adding lubricating oil 9 to the oil storage area of cavity 7, still is equipped with oil filler point 5 on bearing cap 4 upper surface, and oil filler point 5 is vertical to be set up, and oil filler point 5 aligns with arc-shaped notch 6 on the bearing body 1102.

Further, be equipped with the apron in bearing cap 4 corresponding oil filler point department of oil filler point 5, the apron can be dismantled and set up on bearing cap 4, and the dismantlement here can be for bolted connection, when needs pour into lubricating oil 9 into, at this moment with the apron dismantlement, opens the oil filler point of oil filler point 5, and after the oiling is accomplished, with the apron lid in the oil filler point with 5 shutoff of oil filler point, the existence of apron can reduce fluid evaporation, can also the separation dust get into, pollutes lubricating oil 9.

Further, still be equipped with the breather pipe on the apron, the breather pipe communicates with each other cavity 7 with outside atmosphere, and lubricating oil 9 in the cavity 7 can carry the frictional heat between transmission shaft 3 and the axle bush 1101 at the in-process of constantly lubricating, leads to inside temperature, atmospheric pressure to rise, and the existence of breather pipe can be with inside and outside intercommunication with the heat effluvium, reaches the purpose of cooling and balanced inside and outside atmospheric pressure.

Further, in an embodiment, two arc-shaped notches 6 are provided in the bearing body 1102, two arc-shaped notches 6 are also provided in the bearing pad 1101, the two arc-shaped notches 6 in the bearing pad 1101 are spaced apart from each other in the axial direction of the transmission shaft 3, and the two arc-shaped notches 6 in the bearing body 1102 are also spaced apart from each other in the axial direction of the transmission shaft 3. Meanwhile, the number of the oil slingers 8 is two, the two oil slingers 8 are correspondingly sleeved on the periphery of the transmission shaft 3, and the two oil slingers 8 are correspondingly positioned in the arc-shaped gap 6. The purpose that sets up two oil slingers 8 here and set up at the axial direction interval of transmission shaft 3 is in order to let oil slinger 8 form the multiple spot oil feed lubrication simultaneously between transmission shaft 3 and axle bush 1101, and the multiple spot oil feed can accelerate lubricating oil 9 and scatter between transmission shaft 3 and axle bush 1101, and lubricated timeliness is good, avoids from getting into lubricating oil 9 to lubricating oil 9 the longer problem of live time between scattering between transmission shaft 3 and axle bush 1101.

Further, in order to accelerate the time for injecting the lubricating oil 9 into the cavity 7, the two oil injection holes 5 are arranged corresponding to the two arc-shaped gaps 6, and the purpose that the oil injection holes 5 are arranged corresponding to the arc-shaped gaps 6 is to enable part of the lubricating oil 9 to flow into the arc-shaped gaps 6 in the process of adding the lubricating oil 9, and extend the arc-shaped gaps 6 to enter between the transmission shaft 3 and the bearing shell 1101.

Furthermore, the oil storage area is an oil cavity 10 sinking into the frame 1, the two oil slingers 8 are matched, the number of the oil cavities 10 is two, the two oil cavities 10 are respectively communicated with the cavity 7 to form a part of the cavity 7, meanwhile, the two oil cavities 10 are communicated through a middle communicating hole at the bottom, the existence of the communicating hole can ensure that the two oil cavities can reach the same oil height when oil is injected, so that the oil height of the two oil cavities can be represented by detecting the oil height of one oil cavity, and the arrangement of a detection piece is reduced.

Further, the frame 1 is provided with a level liquid thermometer 12 corresponding to the oil chamber 10, which is a component for detecting the oil level of one of the oil chambers and is used for detecting the level and the oil temperature of the lubricating oil 9 in the chamber 7, wherein the level liquid thermometer 12 is purchased directly from the market and has a mature structure in the prior art, and therefore, the structure thereof is not described in detail herein. The liquid level liquid thermometer 12 monitors the height of oil in the oil chamber 10 in real time, the height part of the oil is lower than a low set value and is not higher than a high set value, meanwhile, reference data can be provided for when the lubricating oil 9 is injected, when the liquid level is lower than the low set value, the lubricating oil 9 can be injected into the oil chamber at the moment, and the height of the lubricating oil 9 is ensured to be at a proper position.

When the oil temperature displayed by the liquid level liquid thermometer 12 is too low, the machine tool is required to be operated at a low speed for a period of time until the oil temperature rises and reaches the standard, and then the machine tool can enter a normal working state; when the oil temperature is too high, the machine should be stopped to cool in time, and if necessary, the transmission mechanism is checked to have abnormal faults.

Furthermore, in order to prevent the lubricating oil 9 between the transmission shaft 3 and the bearing pad 1101 from being continuously extruded out, and thus more lubricating oil 9 leaks along the joint surface between the transmission shaft 3 and the bearing pad 1101, the sealing assemblies 2 are respectively arranged on the bearing cover 4 and the two end surfaces of the frame 1, the sealing assemblies 2 are used for sealing the cavity 7 to form a sealed cavity 7 while sealing the transmission shaft 3 and the bearing pad 1101 to prevent oil leakage, and the cavity 7 is sealed to reduce the possibility that the lubricating oil 9 inside is thrown out. The seal assembly 2 herein employs conventional shaft end seal components, i.e. components including conventional end cap, seal ring and oil seal, and the structure thereof is prior art, and will not be described in detail.

The above-described embodiments should not be construed as limiting the scope of the utility model, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. A thin oil lubricating structure for a transmission shaft of a press machine is characterized in that two ends of the transmission shaft are respectively and rotatably arranged on a frame through bearing assemblies, it is characterized in that the bearing assembly comprises a bearing body, a bearing bush and a bearing cover, a cavity is formed between the bearing cover and the frame, the bearing body is arranged in the cavity and sleeved on the transmission shaft, the bearing bush is arranged between the bearing body and the transmission shaft, the position of the cavity corresponding to the lower part of the transmission shaft is an oil storage area, the bearing body is provided with an arc-shaped notch which penetrates through the inner circumferential wall and the outer circumferential wall of the bearing body, the bearing bush is provided with an arc notch penetrating through the inner circumferential wall and the outer circumferential wall of the bearing bush, the arc notch on the bearing body and the arc notch on the bearing bush are overlapped at the same position corresponding to the transmission shaft and have the same central angle, the central angle is larger than 180 degrees, and the periphery of the transmission shaft is sleeved with an oil slinger corresponding to the arc notch.

2. The thin oil lubrication structure for the drive shaft of a press machine as claimed in claim 1, wherein said bearing cap is further provided with an oil injection hole, said oil injection hole being aligned with said arcuate cutout of said bearing body.

3. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 2, wherein a cover plate is provided at the position of the bearing cover corresponding to the oil filling port of the oil filling hole.

4. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 3, wherein a vent pipe is provided on the cover plate, and the vent pipe connects the cavity with the external atmosphere.

5. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 1, 2, 3 or 4, wherein there are two arc notches on the bearing body, there are two arc notches on the bearing shell, the two arc notches on the bearing shell are axially spaced along the transmission shaft, the two arc notches on the bearing body are axially spaced along the transmission shaft, there are two oil slingers, and the two oil slingers are correspondingly sleeved on the periphery of the transmission shaft corresponding to the arc notches.

6. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 5, wherein two oil injection holes are provided in said bearing cap, and two oil injection holes are provided corresponding to two said arc-shaped notches.

7. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 5, wherein said oil storage area is two oil chambers sunk downward into the inside of said frame, and two of said oil chambers are respectively communicated with said cavity to be a part of said cavity, and two of said oil chambers are communicated with each other.

8. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 7, wherein a liquid level and liquid temperature meter is arranged at a position of the frame corresponding to the oil chamber, and is used for detecting the liquid level and the oil temperature of the lubricating oil in the chamber.

9. The thin oil lubrication structure for the transmission shaft of the press machine as claimed in claim 1, wherein the bearing cap and the frame are respectively provided with a sealing assembly at two end faces thereof for sealing the cavity, so that the cavity forms a sealed cavity.