CN117927645A - Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine - Google Patents

Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine Download PDF

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Publication number
CN117927645A
CN117927645A CN202410088733.9A CN202410088733A CN117927645A CN 117927645 A CN117927645 A CN 117927645A CN 202410088733 A CN202410088733 A CN 202410088733A CN 117927645 A CN117927645 A CN 117927645A
Authority
CN
China
Prior art keywords
oil
cavity
adaptive
rocker arm
liquid channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410088733.9A
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Chinese (zh)
Inventor
李辉
胡俊
黄秋来
董超
王广
胡璟
吕瑞林
杨光
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Tiandi Shanghai Mining Equipment Technology Co Ltd
Original Assignee
Tiandi Shanghai Mining Equipment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tiandi Shanghai Mining Equipment Technology Co Ltd filed Critical Tiandi Shanghai Mining Equipment Technology Co Ltd
Priority to CN202410088733.9A priority Critical patent/CN117927645A/en
Publication of CN117927645A publication Critical patent/CN117927645A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Details Of Gearings (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention discloses an oil self-adaptive reversing device, a lubricating system and a coal mining machine rocker arm, wherein the rocker arm is provided with a hollow cavity, a plurality of gear bearings are arranged in the cavity and filled with lubricating liquid for lubricating the gear bearings, and the reversing device comprises two inlet ends which are respectively communicated with two end positions of the bottom wall of the cavity from the outside, so that when the rocker arm swings, the lubricating liquid is conveyed to the top surface of the cavity from an oil concentration area of the cavity to lubricate all gear bearings. Through with two entrance ends of fluid self-adaptation switching-over device communicate respectively in the two tip positions of the diapire of cavity to can obtain the lubrication liquid from the fluid centralized area in the two tip of cavity when the rocking arm swings, and carry the cavity top surface and get into in the cavity with the lubrication liquid, the lubrication liquid that carries is carried respectively towards all gear bearings, thereby makes all gear bearings obtain lubrication, improves rocking arm transmission system's life-span and reliability.

Description

Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine
Technical Field
The invention belongs to the technical field of coal mining machines, and particularly relates to an oil self-adaptive reversing device, a lubricating system comprising the oil self-adaptive reversing device and a rocker arm of the coal mining machine.
Background
The coal mining machine is a coal mining device widely applied, the rocker arms of the coal mining machine are often positioned at swing positions with different angles so as to mine coal beds with different thicknesses, and when the rocker arms swing upwards to mine upper coal, the oil in the cavity of the rocker arms is concentrated in a high-speed area, so that the bearing of a low-speed gear cannot be lubricated; when the rocker swings downwards to collect the lower coal, the oil is concentrated in a low-speed-stage area, so that the high-speed-stage gear bearing cannot be lubricated. Because the lubrication of the gear bearing is insufficient, the service life and the reliability of a transmission system are greatly reduced, and the whole rocker arm transmission system is damaged when serious, so that the product quality is reduced, and the production of a mining party is influenced.
Disclosure of Invention
The invention aims to solve the problems, and aims to provide an oil self-adaptive reversing device and a coal cutter rocker arm, which solve the problem of uneven lubrication of gear bearings when the coal cutter rocker arm swings to different angles in the prior art, and effectively improve the service life and reliability of a rocker arm transmission system.
The invention provides an oil self-adaptive reversing device which is arranged on a rocker arm of a coal mining machine, wherein the rocker arm is provided with a hollow cavity, a plurality of gear bearings are arranged in the cavity and filled with lubricating liquid for lubricating the gear bearings,
The oil self-adaptive reversing device comprises two inlet ends and is respectively communicated with two end positions of the bottom wall of the cavity from the outside, so that lubricating liquid is conveyed to the top surface of the cavity by an oil concentration area of the cavity to lubricate all gear bearings when the rocker swings.
Preferably, the oil self-adaptive reversing device comprises:
The reversing block is internally provided with a first oil liquid channel and a second oil liquid channel which share the same outlet, the first oil liquid channel is communicated with an oil liquid concentration area when the rocker arms swing upwards, and the second oil liquid channel is communicated with an oil liquid concentration area when the rocker arms swing downwards; and
The valve core is slidably arranged in the reversing block and used for conducting or closing the first oil liquid channel or the second oil liquid channel along with the inclination angle of the rocker arm.
Preferably, a sliding cavity is formed in the area between the first oil liquid channel and the second oil liquid channel, the valve core is movably arranged in the sliding cavity,
The first oil liquid channel and the second oil liquid channel are communicated with the two end faces of the sliding cavity along the moving direction of the valve core, a first oil suction port and a second oil suction port are respectively arranged at two ends of the side wall of the sliding cavity along the sliding direction, the first oil suction port is close to the first oil liquid channel, and the second oil suction port is close to the second oil liquid channel.
Preferably, the length of the sliding cavity is matched with the length of the valve core,
The two ends of the valve core are respectively provided with a conical surface, and the end size of the conical surface is smaller than the pipe orifice sizes of the first oil liquid channel and the second oil liquid channel, so that the valve core can slide back and forth, and is respectively in sealing fit with the pipe orifice of the first oil liquid channel or the pipe orifice of the second oil liquid channel.
Preferably, a plurality of annular grooves are circumferentially arranged in the middle area of the valve core and used for containing oil.
Preferably, one end of the sliding cavity is a detachable screw, and a flow pipeline is arranged in the screw to form part of the first oil liquid channel and is communicated with the sliding cavity to feed oil.
Preferably, a sealing ring is circumferentially sleeved on the inner side of the nut of the threaded piece so as to seal.
Preferably, the top surface of the reversing block forms a mounting surface, and threaded through holes are respectively formed in the end angle positions of the reversing block so as to be fixedly connected with the rocker arm through a threaded piece.
Secondly, the invention also provides a lubrication system applied to a rocker arm of a coal mining machine, the rocker arm is provided with a hollow cavity, a plurality of gear bearings are arranged in the cavity, and the cavity is filled with lubrication liquid for lubricating the gear bearings, and the lubrication system comprises:
The plurality of oil inlets are arranged on the top wall of the cavity of the rocker arm and are sequentially arranged along the length direction of the rocker arm, and the plurality of oil inlets and the plurality of gear bearings are respectively and correspondingly arranged;
A front side oil outlet and a rear side oil outlet which are arranged at two end areas of the bottom wall of the cavity;
the oil suction pumps are arranged on the rocker arms, and a plurality of oil outlets of the oil suction pumps are respectively communicated with a plurality of oil inlets of the cavity one by one so as to convey lubricating liquid; and
According to the oil self-adaptive reversing device, the oil self-adaptive reversing device is arranged on the rocker arm of the coal mining machine and is externally communicated with the two end parts of the bottom wall of the cavity, so that when the rocker arm swings, lubricating liquid is conveyed to the top surface of the cavity by the oil concentration area of the cavity to lubricate all gear bearings.
In addition, the invention also provides a rocker arm of the coal mining machine, which comprises the oil self-adaptive reversing device or the lubricating system.
According to the oil self-adaptive reversing device, the oil self-adaptive reversing device is externally fixed on the rocker arm of the coal mining machine, and the two inlet ends of the oil self-adaptive reversing device are respectively communicated with the two end parts of the bottom wall of the cavity, so that lubricating liquid can be obtained from oil concentrated areas in the two end parts of the cavity when the rocker arm swings, and is conveyed to the top surface of the cavity and enters the cavity, and the conveyed lubricating liquid is conveyed towards all gear bearings respectively, so that all gear bearings are lubricated, and the service life and reliability of a rocker arm transmission system are improved.
Drawings
FIG. 1 is a schematic diagram of the internal structure of a rocker arm and a lubrication system according to an embodiment of the present invention.
Fig. 2 is a top view of an oil-liquid adaptive reversing device in an embodiment of the invention.
Fig. 3 is a cross-sectional view of the oil-liquid adaptive reversing device along the direction A-A in fig. 2 in an embodiment of the invention.
Fig. 4 is a schematic structural view of a valve cartridge in an embodiment of the present invention.
Fig. 5 is a graph showing a lubricant distribution diagram of the interior of the cavity in the rocker arm up-swinging state in the embodiment of the present invention.
Fig. 6 is a cross-sectional view of the oil-liquid adaptive reversing device according to the embodiment of the present invention, showing the state of swinging up with the rocker arm.
Fig. 7 is a graph showing a lubrication fluid distribution in a cavity in a rocker arm down-swing state in the embodiment of the present invention.
Fig. 8 is a cross-sectional view of the oil-liquid adaptive reversing device according to the embodiment of the present invention along with the swinging state of the rocker arm.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
< Example >
As shown in fig. 1 to 8, the present embodiment discloses an oil self-adaptive reversing device 10 and a lubrication system 20, which are disposed on a rocker arm 30 of a coal mining machine, and are used for implementing uniform lubrication of gear bearings of a transmission system in the rocker arm 30 under different inclination angles.
As shown in fig. 1, the rocker arm 30 of the shearer has a hollow cavity 31, and a plurality of gear bearings 32 of the transmission system are provided in the cavity 31 and filled with a lubricating fluid (shown in black hatching in the drawing) for lubricating the gear bearings. Taking the example shown in fig. 1, the number of gear bearings 32 is seven gear bearings of different sizes. In practical application, the number of gear bearings is set according to the practical production requirement of the coal mining machine. The lubricating fluid is various lubricating oils commonly used in the mechanical field.
Based on the structure of the rocker arm 30 shown in fig. 1, it can be seen that: if the rocker arm 30 swings up and down, the lubrication fluid is necessarily concentrated in only a partial area in the cavity 31, that is, in the area of the cavity 31 located below as seen in the swinging direction of the rocker arm 30, so that only a part of the gear bearings 32 can be lubricated, and the gear bearings 302 located at high positions cannot be lubricated, as shown in fig. 5 and 7.
Based on the above, the oil self-adaptive reversing device 10 of this embodiment is provided with two inlet ends, and is respectively communicated with two end positions of the bottom wall of the cavity 31 from the outside, so that when the rocker arm 30 swings, the oil collecting area of the cavity 31 is used for conveying the lubricating fluid to the top surface of the cavity 31 so as to lubricate all the gear bearings 32.
As shown in fig. 1, the lubrication system 20 includes: a plurality of oil inlets, a front side oil outlet, a rear side oil outlet, an oil suction pump 21, a power unit 22 and the oil self-adaptive reversing device 10.
The plurality of oil inlets are respectively arranged on the top wall of the cavity 31 of the rocker arm 30 and are sequentially arranged along the length direction of the cavity 31, and the plurality of oil inlets and the plurality of gear bearings 32 are respectively and correspondingly arranged so as to provide lubricating fluid for lubricating the gear bearings 32. Here, the quantity of oil inlet can increase and decrease according to actual production needs. As a specific embodiment, as shown by the marks B1, B2, B3, B4, B5, and B6 in fig. 1, the oil inlets may be provided in six oil inlets, which are disposed in one-to-one correspondence with the meshing areas of the adjacent two gear bearings 32, so as to lubricate the gear bearings.
The front side oil outlet and the rear side oil outlet are respectively arranged on two end regions of the bottom wall of the cavity 31 and are used for conveying lubricating liquid; the front and rear sides are measured in the longitudinal direction of the rocker arm 30, and the position away from the rotation axis is the front side and the position close to the rotation axis is the rear side. As a specific embodiment, in fig. 1, the port A1 is a front-side oil outlet, and the port A2 is a rear-side oil outlet; in addition, two outlets may also be divided according to the speed of the drive train, for example: the front oil outlet A1 is arranged in a low-speed area of the transmission system, and the rear oil outlet A2 is arranged in a high-speed area of the transmission system.
The oil suction pump 21 is arranged on the rocker arm 30, and a plurality of oil outlets of the oil suction pump are respectively communicated with a plurality of oil inlets of the cavity 31 one by one so as to convey lubricating liquid. As a specific embodiment, as shown in fig. 1, the oil suction pump 21 has six oil outlets, which are respectively communicated with six oil inlets of B1, B2, B3, B4, B5, and B6.
The power unit 22 is connected with the oil suction pump 21 and is used for providing power for the oil suction pump 21 so as to realize the delivery of lubricating liquid, and the power type machine, electricity and liquid can be used.
As shown in fig. 2, 3 and 4, the oil adaptive reversing device 10 includes: a reversing block 11 and a valve core 12.
The reversing block 11 is internally provided with a first oil liquid channel P1 and a second oil liquid channel P2 which share the same outlet, the first oil liquid channel P1 is communicated with an oil liquid concentration area when the rocker arm 30 swings upwards, the second oil liquid channel P2 is communicated with an oil liquid concentration area when the rocker arm swings downwards, and the outlet of the reversing block 11 is communicated with the inlet of the oil suction pump 21.
The valve core 12 is slidably disposed in the reversing block 11, and follows the inclination angle of the rocker arm 30 and follows under the action of its own gravity, so as to switch on or off the first oil channel P1 or the second oil channel P2.
According to the oil self-adaptive reversing device and the lubricating system, the oil self-adaptive reversing device is externally fixed on the rocker arm of the coal mining machine, and the two inlet ends of the oil self-adaptive reversing device are respectively communicated with the two end parts of the bottom wall of the cavity, so that lubricating liquid can be obtained from oil concentration areas in the two end parts of the cavity when the rocker arm swings, and is conveyed to the top surface of the cavity and enters the cavity, and conveyed lubricating liquid is conveyed towards all gear bearings respectively, so that all gear bearings are lubricated, and the service life and reliability of a rocker arm transmission system are improved.
As shown in fig. 2, a sliding cavity 13 is formed in a region between the first oil passage P1 and the second oil passage P2, and the valve core 12 is movably disposed in the sliding cavity 13. The first oil liquid channel P1 and the second oil liquid channel P2 are communicated with two end faces of the sliding cavity 13 along the moving direction of the valve core 12, two end areas of the side wall of the sliding cavity 13 along the sliding direction are respectively provided with a first oil suction port 14 and a second oil suction port 15, the first oil suction port 14 is close to the first oil liquid channel P1, and the second oil suction port 15 is close to the second oil liquid channel P2.
As a specific embodiment, the length of the sliding chamber 13 is matched to the length of the valve core 12. The two ends of the valve core 12 are respectively provided with a conical surface 121, and the end size of the conical surface 121 is smaller than the pipe orifice sizes of the first oil liquid channel P1 and the second oil liquid channel P2, so that the valve core 12 can slide back and forth, and is respectively matched with the pipe orifice of the first oil liquid channel P1 or the second oil liquid channel P2 in a sealing way, and the first oil liquid channel P1 or the second oil liquid channel P2 is conducted or closed.
As a specific embodiment, the central area of the valve core 12 is circumferentially provided with a plurality of annular grooves 122 for accommodating lubricating fluid, so as to enhance the bearing effect on the valve core 12, avoid sliding tilting or unsmooth, and reduce the influence caused by machining errors.
As a specific embodiment, one end of the sliding cavity 13 is a detachable screw member 16, and a flow channel is arranged in the screw member 16 to form part of a first oil liquid channel and is communicated with the sliding cavity 13 to be filled with oil. In this configuration, the valve core 12 is easily assembled, the valve core 12 is placed in the sliding cavity 13, and then the screw 16 is screwed.
In addition, a seal ring 17 is circumferentially fitted around the inside of the nut of the screw 16 to seal the contact portion between the screw 16 and the reversing block 11 from leaking.
As a specific embodiment, the top surface of the reversing block 11 forms a mounting surface, and threaded through holes are respectively formed at the end angle positions of the reversing block, so that the reversing block is fixedly connected with the rocker arm 30 through the screw member 18.
The following describes the lubricating oil circulation modes in different states of the rocker arm 30 with reference to fig. 5, 6, 7, and 8:
As shown in fig. 1 and 3, when the rocker arm 30 is in a horizontal state, the lubricating liquid is uniformly distributed in the cavity 31, that is, the front oil outlet A1 and the rear oil outlet A2 are uniformly distributed, the valve core 12 is also in a horizontal position, when the rocker arm 30 swings upward, the lubricating liquid is concentrated at the rear oil outlet A2, the valve core 12 closes the second oil channel P2 along with the inclination angle of the rocker arm 30, so that the lubricating oil sequentially flows to six oil inlets B1, B2, B3, B4, B5 and B6 of the cavity 31 through the rear oil outlet A2, the first oil channel P1 and the oil suction pump 21, and uniform lubrication of seven gear bearings 32 is realized. In the open state, the lubricating oil can flow to six oil inlets of B1, B2, B3, B4, B5 and B6 of the cavity 31 through the oil suction pump 21 respectively through the front oil outlet A1 and the second oil channel P2 or the rear oil outlet A2 and the first oil channel P1, so that the uniform lubrication of seven gear bearings 32 is realized.
As shown in fig. 5 and 6, when the rocker arm 30 swings upward, the lubrication fluid is concentrated at the rear oil outlet A2, and the valve element 12 closes the second oil passage P2 according to the inclination angle of the rocker arm 30, so that the lubrication oil sequentially flows to six oil inlets B1, B2, B3, B4, B5, B6 of the cavity 31 through the rear oil outlet A2, the first oil passage P1, and the oil suction pump 21, thereby achieving uniform lubrication of the seven gear bearings 32.
As shown in fig. 7 and 8, when the rocker arm 30 swings downward, the lubrication fluid is concentrated at the front oil outlet A1, and the valve core 12 closes the first oil passage P1 according to the inclination angle of the rocker arm 30, so that the lubrication oil sequentially flows to six oil inlets B1, B2, B3, B4, B5, B6 of the cavity 31 through the front oil outlet A1, the second oil passage P2, and the oil suction pump 21, thereby achieving uniform lubrication of the seven gear bearings 32.
In addition, the embodiment also provides a rocker arm of the coal mining machine, which comprises the oil self-adaptive reversing device or the lubricating system of the scheme.
Above, through fluid self-adaptation switching-over device, lubricating system and coal-winning machine rocking arm of this embodiment, install fluid self-adaptation switching-over device and lubricating system by the rocking arm outside of coal-winning machine, through obtaining the lubrication liquid from the fluid centralized area in the both ends of the cavity of rocking arm to carry the lubrication liquid to the cavity top surface and get into the cavity, the lubrication liquid that carries is carried respectively towards all gear bearings, thereby makes all gear bearings obtain lubrication, improves rocking arm transmission system's life-span and reliability.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (10)

1. An oil self-adaptive reversing device is arranged on a rocker arm of a coal mining machine, the rocker arm is provided with a hollow cavity, a plurality of gear bearings are arranged in the cavity and filled with lubricating liquid for lubricating the gear bearings, the self-adaptive reversing device is characterized in that,
The oil self-adaptive reversing device comprises two inlet ends and is respectively communicated with two end positions of the bottom wall of the cavity from the outside, so that lubricating liquid is conveyed to the top surface of the cavity by an oil concentration area of the cavity to lubricate all gear bearings when the rocker swings.
2. The oil adaptive reversing device according to claim 1, characterized in that the oil adaptive reversing device includes:
The reversing block is internally provided with a first oil liquid channel and a second oil liquid channel which share the same outlet, the first oil liquid channel is communicated with an oil liquid concentration area when the rocker arms swing upwards, and the second oil liquid channel is communicated with an oil liquid concentration area when the rocker arms swing downwards; and
The valve core is slidably arranged in the reversing block and used for conducting or closing the first oil liquid channel or the second oil liquid channel along with the inclination angle of the rocker arm.
3. An oil self-adaptive reversing device according to claim 1, wherein,
A sliding cavity is formed in the area between the first oil liquid channel and the second oil liquid channel, the valve core can be movably arranged in the sliding cavity,
The first oil liquid channel and the second oil liquid channel are communicated with the two end faces of the sliding cavity along the moving direction of the valve core, a first oil suction port and a second oil suction port are respectively arranged at two ends of the side wall of the sliding cavity along the sliding direction, the first oil suction port is close to the first oil liquid channel, and the second oil suction port is close to the second oil liquid channel.
4. An oil self-adaptive reversing device according to claim 1, wherein,
The length of the sliding cavity is matched with the length of the valve core,
The two ends of the valve core are respectively provided with a conical surface, and the end size of the conical surface is smaller than the pipe orifice sizes of the first oil liquid channel and the second oil liquid channel, so that the valve core can slide back and forth, and is respectively in sealing fit with the pipe orifice of the first oil liquid channel or the pipe orifice of the second oil liquid channel.
5. An oil self-adaptive reversing device according to claim 1, wherein,
The middle area circumference of case is provided with a plurality of ring grooves for hold fluid.
6. An oil self-adaptive reversing device according to claim 1, wherein,
One end of the sliding cavity is a detachable threaded piece, and a flow pipeline is arranged in the threaded piece to form part of the first oil liquid channel and is communicated with the sliding cavity to feed oil.
7. An oil self-adaptive reversing device according to claim 1, wherein,
And a sealing ring is circumferentially sleeved on the inner side of the nut of the threaded piece so as to seal.
8. An oil self-adaptive reversing device according to claim 1, wherein,
The top surface of the reversing block forms a mounting surface, and threaded through holes are respectively formed in the end angle positions of the reversing block so as to be fixedly connected with the rocker arm through threaded pieces.
9. A lubrication system for a shearer swing arm having a hollow cavity with a plurality of gear bearings disposed therein and filled with a lubricating fluid for lubricating the gear bearings, the lubrication system comprising:
The plurality of oil inlets are arranged on the top wall of the cavity of the rocker arm and are sequentially arranged along the length direction of the rocker arm, and the plurality of oil inlets and the plurality of gear bearings are respectively and correspondingly arranged;
A front side oil outlet and a rear side oil outlet which are arranged at two end areas of the bottom wall of the cavity;
the oil suction pumps are arranged on the rocker arms, and a plurality of oil outlets of the oil suction pumps are respectively communicated with a plurality of oil inlets of the cavity one by one so as to convey lubricating liquid; and
The oil adaptive reversing device according to claims 1 to 8, which is provided on a rocker arm of a coal mining machine and is externally communicated to both end positions of a bottom wall of the cavity, so that lubrication liquid is delivered from an oil concentration area of the cavity to a top surface of the cavity to lubricate all gear bearings when the rocker arm swings.
10. A shearer swing arm comprising an oil adaptive reversing device according to claims 1 to 8 or a lubrication system according to claim 9.
CN202410088733.9A 2024-01-22 2024-01-22 Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine Pending CN117927645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410088733.9A CN117927645A (en) 2024-01-22 2024-01-22 Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410088733.9A CN117927645A (en) 2024-01-22 2024-01-22 Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine

Publications (1)

Publication Number Publication Date
CN117927645A true CN117927645A (en) 2024-04-26

Family

ID=90765974

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410088733.9A Pending CN117927645A (en) 2024-01-22 2024-01-22 Oil self-adaptive reversing device, lubricating system and rocker arm of coal mining machine

Country Status (1)

Country Link
CN (1) CN117927645A (en)

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