CN212155735U - Forced lubricating system for rocker arm of high-power coal mining machine - Google Patents
Forced lubricating system for rocker arm of high-power coal mining machine Download PDFInfo
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- CN212155735U CN212155735U CN202020420561.8U CN202020420561U CN212155735U CN 212155735 U CN212155735 U CN 212155735U CN 202020420561 U CN202020420561 U CN 202020420561U CN 212155735 U CN212155735 U CN 212155735U
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Abstract
The utility model relates to a high-power coal-winning machine rocking arm forced lubrication system, including the oiling screw pump, drive gear and one or more spout the oil pipe, oiling screw pump and the coaxial fixed connection of drive gear, and the two all sets up in the straight-teeth gear intracavity of coal-winning machine rocking arm, a gear external toothing of drive gear and the gear drive system of coal-winning machine rocking arm, the entrance point of spouting the oil pipe is connected through the oil circuit to the export of oiling screw pump, spout the both ends of oil pipe and all inlay on being fixed in the casing of coal-winning machine rocking arm, spout the middle part of oil pipe and expose in the straight-teeth gear intracavity, spout and seted up a plurality of nozzle openings on the pipe wall of oil pipe, the flank of nozzle opening is towards the flank of tooth of low-speed level straight-teeth gear, be equipped with a plurality of oil. The utility model discloses can ensure that high-power coal-winning machine rocking arm when great inclination long-term operation transmission system gear and bearing obtain good lubrication, avoid causing heating and damage because of the lack of oil.
Description
Technical Field
The utility model relates to a forced lubrication system to coal-winning machine rocking arm is particularly useful for the lubrication of the rocking arm of high-power, big mining height coal-winning machine.
Background
The rocker arm of the high-power coal mining machine is generally longer, the inclination angle is larger when coal is cut under the condition of larger mining height, gear oil in the gear box is concentrated in a two-three shaft high-speed area, and the planetary mechanism and the idle gear stage are always in an oil shortage state. To solve this problem, the following two methods have been used: (1) sub-cavity lubrication is adopted for the straight gear stage and the planetary gear cavity; (2) and injecting oil into the rocker arm planetary mechanism oil pool from the oil tank of the coal mining machine body through the pump motor, wherein the return oil in the planetary mechanism oil pool flows back to the oil tank of the machine body through the pump motor.
However, the two methods have respective disadvantages, and as for the method (1), because the oil pool of the planetary gear cavity is lack of flow, the heat dissipation is difficult, and the floating oil seal and the like are easy to generate heat and burn out; with regard to the method (2), the oil tank of the machine body is easy to be sucked empty under the condition that the oil return line of the pump motor is blocked. And the two methods can not solve the problem of oil shortage of a straight gear and an idler bearing in a low-speed area, so that the two methods are not adopted on a rocker arm of a high-power coal mining machine.
At present, a rocker arm of a high-power coal mining machine is mainly forced to inject oil into a planetary gear cavity through an oil duct arranged on a rocker arm shell after a helical gear pump meshed with a shaft gear absorbs oil so as to play a role in cooling and lubricating a bearing and a gear of a planetary mechanism, and lubricating oil in the planetary gear cavity overflows to a straight gear cavity through a final gear center connecting spline after being fully injected. The scheme is feasible for the conditions that the mining height of the rocker arm is high and the inclination angle is not large, but the rocker arm is longer and longer along with the increasing mining height of the coal mining machine, particularly when the rocker arm of the coal mining machine runs at a high position for a long time, the heat productivity is large due to the fact that oil is stirred by the inner gear of the planetary gear cavity, and the straight gear and the idler bearing can only be used for lubricating oil adhered to the lower mining height during high-position running, so that the cooling effect is almost avoided, and the heat is still.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-power coal-winning machine rocking arm forced lubrication system can show the lubrication situation who improves high-power coal-winning machine rocking arm long-term operation under great inclination, avoids the rocking arm abnormal heating.
The utility model discloses a main technical scheme has:
the utility model provides a high-power coal-winning machine rocking arm forced lubrication system, includes low-speed level straight-teeth gear flank oil spout lubrication subsystem, and low-speed level straight-teeth gear flank oil spout lubrication subsystem includes screw oil pump, drive gear and one or more spouts oil pipe, the coaxial fixed connection of screw oil pump and drive gear, and the two all sets up in the straight-teeth gear intracavity of coal-winning machine rocking arm, a gear external toothing of the gear drive system of drive gear and coal-winning machine rocking arm, the export of screw oil pump is connected through the oil circuit the entrance point of spouting oil pipe, the both ends of spouting oil pipe are all inlayed and are fixed in on the casing of coal-winning machine rocking arm, the middle part of spouting oil pipe exposes in the straight-teeth gear intracavity, a plurality of nozzle openings have been seted up on the pipe wall of spouting oil pipe, the tooth face of the low-teeth gear of the gear, the oil circuit is provided with a plurality of outlets, and each oil injection pipe is respectively connected with different outlets of the oil circuit.
One end of the oil injection pipe is open, the other end of the oil injection pipe is closed, the open end is an inlet end of the oil injection pipe, the closed end is a blind end, the outer diameter of the blind end of the oil injection pipe is sealed with a shell of a rocker arm of a coal mining machine, a sealing groove is formed in the outer diameter of the blind end, and a sealing piece is installed in the sealing groove.
The inlet end of the oil injection pipe can penetrate out of the shell of the coal cutter rocker arm and is connected with the outlet of an oil delivery pipe through a connecting joint, the inlet of the oil delivery pipe is connected with the outlet of the spiral oil injection pump, and the oil delivery pipe and the connecting joint form part of the oil circuit.
The shell of the coal mining machine rocker arm can be further provided with an oil through hole, the outlet of the spiral oil filling pump is connected with the inner end of the oil through hole, and the outer end of the oil through hole is connected with the inlet of the oil conveying pipe through a connecting joint.
The system further comprises an idler bearing lubrication subsystem, wherein in the idler bearing lubrication subsystem, a surface oil duct, a radial oil duct and an axial oil duct are preferably arranged on an idler shaft of each idler in a gear transmission system of the coal mining machine rocker arm, the surface oil duct is a circumferential groove located on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened on one end face of the idler shaft and extends inwards in the axial direction, the radial oil duct is a through hole which communicates the surface oil duct with the axial oil duct and extends in the radial direction, the axial position of the surface oil duct is based on the communication with a bearing lubrication hole of a bearing mounted on the idler shaft, the opening of the axial oil duct is connected with an oil injection outlet of the screw pump through the oil duct, the oil duct is provided with a plurality of outlets, and the openings of the axial oil ducts of the idler shafts are respectively connected with different.
Furthermore, a plurality of oil passing holes can be formed in the wall of the cavity between the straight gear cavity and the planetary gear cavity of the coal mining machine rocker arm, and the oil passing holes are close to but avoid the edge of the wall of the cavity.
A forced lubricating system for a rocker arm of a high-power coal mining machine comprises an idler bearing lubricating subsystem, wherein the idler bearing lubricating subsystem comprises a spiral oil injection pump and a driving gear, the spiral oil injection pump and the driving gear are coaxially and fixedly connected and are arranged in a straight gear cavity of the rocker arm of the coal mining machine, the driving gear is externally meshed with a shaft gear of a gear transmission system of the rocker arm of the coal mining machine, a surface oil duct, a radial oil duct and an axial oil duct are arranged on an idler shaft of each idler in the gear transmission system of the rocker arm of the coal mining machine, the surface oil duct is a circumferential groove positioned on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened at one end face of the idler shaft and extends inwards in the axial direction, the radial oil duct is a through hole which communicates the surface oil duct with the axial oil duct and extends in the radial direction, and the axial position, the outlet of the spiral oil injection pump is connected with the opening of the axial oil duct through an oil duct, the oil duct is provided with a plurality of outlets, and the opening of the axial oil duct of each idler shaft is respectively connected with different outlets of the oil duct.
Furthermore, the forced lubrication system for the rocker arm of the high-power coal mining machine can further comprise a low-speed-level spur gear tooth surface oil injection lubrication subsystem, the low-speed-level spur gear tooth surface oil injection lubrication subsystem comprises one or more oil injection pipes, one end of each oil injection pipe is open, the other end of each oil injection pipe is closed, an outlet of the spiral oil injection pump is connected with an opening of each oil injection pipe through an oil circuit, two ends of each oil injection pipe are embedded and fixed on a shell of the rocker arm of the coal mining machine, the middle of each oil injection pipe is exposed in a cavity of the spur gear, a plurality of oil injection holes are formed in the pipe wall of each oil injection pipe and face the tooth surface of the low-speed-level spur gear of the gear transmission system of the rocker arm of the coal mining machine, and.
Furthermore, a plurality of oil passing holes can be formed in the wall of the cavity between the straight gear cavity and the planetary gear cavity of the coal mining machine rocker arm, and the oil passing holes are close to but avoid the edge of the wall of the cavity.
The utility model has the advantages that:
the spiral oiling pump is indirectly driven by a shaft gear of a gear transmission system of a rocker arm of the coal mining machine, the spiral oiling pump pumps oil into the oil path as long as a roller of the coal mining machine works, and lubricating oil is sprayed onto the tooth surface of the low-speed straight gear through the pressure of an oil spray hole to perform forced lubrication, so that the lubricating condition of the low-speed straight gear is improved, and the influence of oil shortage around the low-speed straight gear in a straight gear cavity when the rocker arm runs at a high position is avoided. By arranging the forced lubrication subsystem aiming at the idler bearing, lubricating oil can be ensured to be continuously injected into the idler bearing raceway through the axial oil passage on the idler shaft, so that the idler bearing is subjected to forced lubrication.
A plurality of oil passing holes are formed in a cavity wall C between the straight gear cavity A and the planetary gear cavity B, and the oil passing holes are close to but avoid the edge of the cavity wall. When the rocking arm operating posture has great change, some lubricating oil can flow to another chamber by a chamber through crossing the oilhole, has both increased the mobility of fluid, can help the heat dissipation in planetary gear chamber, can guarantee again simultaneously always that some lubricating oil stays the planetary gear intracavity, can satisfy the lubricated requirement of planetary gear, be unlikely to again because of the volume greatly by planetary gear stir the production unnecessary heat, consequently even the high-order operation of rocking arm, all have obvious effect to fully lubricated planetary gear with reduce it and generate heat.
The utility model discloses can ensure that high-power coal-winning machine rocking arm long-term operation's under great inclination gear and bearing obtain good lubrication, avoid causing because of the lack of oil and generate heat and damage.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a schematic structural view of an example of installation of the oil spray pipe;
FIG. 4 is a schematic view of an embodiment of a forced lubrication arrangement at an idler bearing;
fig. 5 is a schematic view of an example of the arrangement of the oil passing hole.
Reference numerals:
1. a screw oiling pump; 2. a drive gear; 3. an oil spray pipe; 3-1, oil spray holes; 4. a shaft gear; 5. a seal member; 6. connecting a joint; 7. an oil delivery pipe; 8. an oil through hole; 9. an idler shaft; 9-1, a surface oil duct; 9-2, a radial oil duct; 9-3, an axial oil passage; 10. and an oil passing hole.
Detailed Description
The utility model discloses a forced lubrication system (called forced lubrication system for short) of a rocker arm of a high-power coal mining machine, which comprises a spiral oil injection pump 1, a driving gear 2 and one or more oil injection pipes 3, wherein the spiral oil injection pump is coaxially and fixedly connected with the driving gear, and both are arranged in a straight gear cavity A of the coal mining machine rocker arm, the driving gear is externally meshed with a shaft gear 4 of a gear transmission system of the coal mining machine rocker arm, the outlet of the spiral oil injection pump is connected with the inlet end of the oil injection pipe through an oil circuit, both ends of the oil injection pipe are embedded and fixed on the shell of the rocker arm of the coal mining machine, the middle part of the oil spray pipe is exposed in the straight gear cavity, the pipe wall of the oil spray pipe is provided with a plurality of oil spray holes 3-1, the oil injection hole faces to the tooth surface of a low-speed stage straight gear of a gear transmission system of the rocker arm of the coal mining machine. The parts are combined into a low-speed stage spur gear tooth surface oil injection lubrication subsystem. A shaft gear is close to a cutting motor and belongs to a high-speed straight gear. When the rocker arm of the coal mining machine runs at a high position under a large mining height and a large inclination angle, lubricating oil in the cavity of the straight gear is concentrated in a high-speed area, so that the high-speed straight gear can be sufficiently lubricated, meanwhile, a shaft gear drives a driving gear and then indirectly drives the screw oil injection pump to work, and the oil in the low-position oil pool can be continuously delivered to the tooth surface of each low-speed straight gear through an oil way and an oil injection pipe, so that the low-speed straight gear can be sufficiently lubricated even if the low-speed straight gear is higher in position and is far away from the lubricating oil pool.
The spiral oil injection pump works under the indirect drive of a shaft gear, so long as the roller of the coal mining machine works, the spiral oil injection pump pumps oil to the oil circuit, and lubricating oil can perform forced oil injection lubrication on the tooth surface of the straight gear through an oil injection hole on an oil injection pipe, so that the lubricating state of the low-speed straight gear of the rocker arm of the coal mining machine during coal cutting at large mining height and large inclination angle can be obviously improved.
The longer the rocker arm, the more oil spray pipes are preferably arranged to spray oil lubrication respectively for the tooth flanks of different low-speed spur gears. Correspondingly, the oil circuit can be provided with a general inlet and a plurality of outlets, and each oil injection pipe is respectively connected with different outlets of the oil circuit.
In the embodiment shown in the attached drawings, one end of the oil injection pipe is open, the other end of the oil injection pipe is closed, the open end is an inlet end of the oil injection pipe, and the closed end is a blind end. And the outer diameter of the blind end of the oil injection pipe is sealed with the shell of the coal mining machine rocker arm. Specifically, a sealing groove is arranged on the outer diameter of the blind end, and a sealing piece 5 is arranged in the sealing groove to realize sealing.
The inlet end of the oil injection pipe penetrates out of the shell of the coal cutter rocker arm and is connected with an outlet of an oil delivery pipe 7 through a connecting joint 6, the inlet of the oil delivery pipe is connected with the outlet of the spiral oil injection pump, and the oil delivery pipe and the connecting joint form a part of the oil circuit and are main parts. The oil delivery pipe may be a combination of a plurality of pipe sections connected by various pipe joints. The oil delivery pipe may have a general inlet communicating with the outlet of the screw pump, and may have a plurality of outlets respectively corresponding to different target lubrication areas.
The shell of the coal mining machine rocker arm can be provided with a through oil through hole 8, the outlet of the spiral oil injection pump is connected with the inner end of the oil through hole, and the outer end of the oil through hole is connected with the inlet of the oil conveying pipe through a connecting joint 6. In this case, the oil passage hole 8 is also a part of the oil passage.
In this embodiment, the oil delivery pipe is preferably a stainless steel pipe.
Furthermore, a surface oil duct 9-1, a radial oil duct 9-2 and an axial oil duct 9-3 are arranged on an idler shaft 9 of each idler in a gear transmission system of the coal mining machine rocker arm, the surface oil duct is a circumferential groove located on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened at one end face of the idler shaft and extends inwards in the axial direction, and the radial oil duct is a through hole which is communicated with the surface oil duct and the axial oil duct and extends in the radial direction. The axial position of the surface oil passage is communicated with a bearing lubricating hole or a lubricating channel of a bearing arranged on the corresponding idler shaft. And the opening of the axial oil passage is connected with the outlet of the screw oil injection pump through the oil passage. Correspondingly, the oil path is provided with a plurality of outlets, and the openings of the axial oil paths of the idler shafts are respectively connected with different outlets of the oil path. The part, the screw oil injection pump 1 and the driving gear 2 form an idler wheel bearing lubrication subsystem. As long as the roller of the coal mining machine works, the spiral oil injection pump pumps oil into the oil way, and lubricating oil is injected into the bearing raceway of the idler shaft through the axial oil duct on the idler shaft to perform forced lubrication on the bearing, so that all idler bearings in the gear transmission system of the rocker arm can be well lubricated in a large mining height and large inclination angle coal cutting state.
The axial oil passage may be provided just on the axis of the idler shaft.
The low-speed stage spur gear tooth surface oil injection lubrication subsystem and the idler bearing lubrication subsystem can exist independently or simultaneously. The screw pump 1, the drive gear 2 and the oil circuit are common components of the two subsystems.
In addition, a 'similar cavity-separating structure' can be arranged in the rocker arm of the coal mining machine, namely a plurality of oil passing holes 10 are formed in a cavity-separating wall C between a straight gear cavity A and a planetary gear cavity B of the rocker arm of the coal mining machine, and the positions of the oil passing holes are close to but avoid the edge of the cavity-separating wall. When the working posture of the rocker arm is greatly changed, part of lubricating oil can flow from one cavity to the other cavity through the oil passing hole, so that the fluidity of the oil is increased, and the heat dissipation is facilitated for the planetary gear cavity with relatively small space. Meanwhile, because the position of the oil passing hole avoids the edge of the cavity wall, no matter how the posture of the rocker arm changes, a part of lubricating oil always stays in the original cavity, especially for the planetary gear cavity, certain lubricating oil can be kept in the planetary gear cavity when the rocker arm runs at a high position, and therefore the lubrication of the planetary gear is guaranteed. Because the oil passing hole is close to the edge of the cavity wall, when the rocker arm of the coal mining machine runs at a high position, the amount of oil left in the planetary gear cavity B is not excessive, and unnecessary heat generated by the planetary gear due to the stirring of a large amount of oil is reduced.
The 'classifying cavity structure' can exist independently from the low-speed stage spur gear tooth surface oil injection lubrication subsystem and the idler bearing lubrication subsystem.
Preferably, three to four oil passing holes are formed. The oil passing holes are three in the embodiment, two of the oil passing holes are symmetrically arranged on a plane, the symmetrical plane is a plane passing through the center line of the roller and the extending direction of the plane is parallel to the extending direction of the rocker arm, and the center line of the other oil passing hole is just positioned on the symmetrical plane. In the extension direction of the rocker arm, a single oil passing hole is close to a shaft gear, the shortest distance from the oil passing hole to the edge of the cavity wall can be determined according to the minimum amount of lubricating oil required to be reserved in the planetary gear cavity B and the inclination angle of the rocker arm of the coal mining machine at the maximum mining height, and the minimum amount of lubricating oil in the planetary gear cavity B just can meet the oil immersion of all bearing rollers and the tooth surface of the planetary gear cavity; two oil passing holes which are symmetrical relative to the plane are far away from a shaft gear, the shortest distance from the two oil passing holes to the edge of the cavity wall can be determined according to the minimum amount of lubricating oil reserved in the straight gear cavity A and the inclination angle of the rocker arm when the coal mining machine is in the maximum bedding position, and the minimum amount of lubricating oil in the straight gear cavity A just can meet the oil immersion of all bearing rollers and tooth surfaces of the straight gear cavity.
When the number of the oil passing holes is four, the oil passing holes can be divided into two pairs, and each pair of the oil passing holes are symmetrically arranged relative to the symmetrical plane. The shortest distance between the oil passing holes and the edge of the cavity wall can be determined according to the minimum amount of lubricating oil reserved in the planetary gear cavity B and the inclination angle of the maximum mining height rocker arm of the coal mining machine, and the minimum amount of lubricating oil in the planetary gear cavity B just can meet the oil immersion of all bearing rollers and tooth surfaces of the planetary gear cavity; the other pair of oil passing holes are far away from a shaft gear, the shortest distance from the oil passing holes to the edge of the cavity wall can be determined according to the minimum amount of lubricating oil reserved in the straight gear cavity A and the inclination angle of the rocker arm when the coal mining machine is in the maximum lying position, the minimum amount of lubricating oil of the straight gear cavity A just can meet the oil immersion of all bearing rollers and tooth surfaces of the straight gear cavity, and two oil passing holes in each pair of oil passing holes respectively undertake the oil passing task between the cavities when the oil passing holes are used for a left rocker arm and a right rocker arm.
The utility model discloses can ensure that high-power coal-winning machine rocking arm long-term operation's under great inclination gear and bearing obtain good lubrication, avoid causing because of the lack of oil and generate heat and damage.
Claims (14)
1. A forced lubricating system for a rocker arm of a high-power coal mining machine is characterized in that: including oiling screw pump, drive gear and one or more oil spout pipe, oiling screw pump and the coaxial fixed connection of drive gear, and the two all sets up in the straight-teeth gear intracavity of coal-winning machine rocking arm, drive gear and the external toothing of a gear drive system's of coal-winning machine rocking arm, oiling screw pump's export is connected through the oil circuit spout the entrance point of oil pipe, it all inlays on the casing that is fixed in the coal-winning machine rocking arm to spout the both ends of oil pipe, the middle part of spouting the oil pipe exposes in the straight-teeth gear intracavity, a plurality of nozzle openings have been seted up on the pipe wall of oil spout pipe, the flank of tooth of low-speed level straight-teeth gear of the gear drive system of coal-winning machine rocking arm of nozzle opening, when spouting the oil pipe has a plurality ofly, the oil circuit sets up a.
2. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 1, wherein: one end of the oil injection pipe is open, the other end of the oil injection pipe is closed, the open end is an inlet end of the oil injection pipe, the closed end is a blind end, the outer diameter of the blind end of the oil injection pipe is sealed with a shell of a rocker arm of a coal mining machine, a sealing groove is formed in the outer diameter of the blind end, and a sealing piece is installed in the sealing groove.
3. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 2, wherein: the inlet end of the oil injection pipe penetrates out of the shell of the coal cutter rocker arm and is connected with the outlet of an oil delivery pipe through a connecting joint, the inlet of the oil delivery pipe is connected with the outlet of the spiral oil injection pump, and the oil delivery pipe and the connecting joint form part of the oil circuit.
4. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 3, wherein: the shell of the coal mining machine rocker arm is also provided with an oil through hole, the outlet of the spiral oil filling pump is connected with the inner end of the oil through hole, and the outer end of the oil through hole is connected with the inlet of the oil conveying pipe through a connecting joint.
5. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 3 or 4, wherein: the oil delivery pipe is made of stainless steel pipes.
6. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 1, 2, 3 or 4, wherein: the surface oil duct, the radial oil duct and the axial oil duct are arranged on an idler shaft of each idler in a gear transmission system of a rocker arm of the coal mining machine, the surface oil duct is a circumferential groove located on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened at one end face of the idler shaft and extends inwards in the axial direction, the radial oil duct is a through hole which is communicated with the surface oil duct and the axial oil duct and extends in the radial direction, the axial position of the surface oil duct is based on the communication with a bearing lubricating hole of a bearing mounted on the idler shaft, the opening of the axial oil duct is connected with an oil injection outlet of the spiral pump through the oil duct, the oil duct is provided with a plurality of outlets, and the opening of the axial oil duct of each idler.
7. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 5, wherein: the surface oil duct, the radial oil duct and the axial oil duct are arranged on an idler shaft of each idler in a gear transmission system of a rocker arm of the coal mining machine, the surface oil duct is a circumferential groove located on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened at one end face of the idler shaft and extends inwards in the axial direction, the radial oil duct is a through hole which is communicated with the surface oil duct and the axial oil duct and extends in the radial direction, the axial position of the surface oil duct is based on the communication with a bearing lubricating hole of a bearing mounted on the idler shaft, the opening of the axial oil duct is connected with an oil injection outlet of the spiral pump through the oil duct, the oil duct is provided with a plurality of outlets, and the opening of the axial oil duct of each idler.
8. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 1, 2, 3 or 4, wherein: a plurality of oil passing holes are formed in a cavity wall between a straight gear cavity and a planetary gear cavity of the coal mining machine rocker arm, and the positions of the oil passing holes are close to but avoid the edge of the cavity wall.
9. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 5, wherein: a plurality of oil passing holes are formed in a cavity wall between a straight gear cavity and a planetary gear cavity of the coal mining machine rocker arm, and the positions of the oil passing holes are close to but avoid the edge of the cavity wall.
10. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 6, wherein: a plurality of oil passing holes are formed in a cavity wall between a straight gear cavity and a planetary gear cavity of the coal mining machine rocker arm, and the positions of the oil passing holes are close to but avoid the edge of the cavity wall.
11. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 7, wherein: a plurality of oil passing holes are formed in a cavity wall between a straight gear cavity and a planetary gear cavity of the coal mining machine rocker arm, and the positions of the oil passing holes are close to but avoid the edge of the cavity wall.
12. A forced lubricating system for a rocker arm of a high-power coal mining machine is characterized in that: the spiral oil injection pump and the driving gear are coaxially and fixedly connected and are arranged in a straight gear cavity of a rocker arm of a coal mining machine, the driving gear is externally meshed with a shaft gear of a gear transmission system of the rocker arm of the coal mining machine, a surface oil duct, a radial oil duct and an axial oil duct are arranged on an idler shaft of each idler in the gear transmission system of the rocker arm of the coal mining machine, the surface oil duct is a circumferential groove positioned on the surface of the idler shaft, the axial oil duct is a section of blind hole which is opened on one end face of the idler shaft and extends inwards along the axial direction, the radial oil duct is a through hole which is communicated with the surface oil duct and the axial oil duct and extends in the radial direction, the axial position of the surface oil duct is based on the communication with a bearing lubrication hole of a bearing arranged on the idler shaft, and the outlet of the spiral oil, the oil circuit is provided with a plurality of outlets, and the openings of the axial oil passages of the idler shafts are respectively connected with different outlets of the oil circuit.
13. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 12, wherein: still include one or more oil spout pipe, oil spout pipe one end opening, the other end are sealed, the export of spiral oiling pump is connected through the oil circuit the opening of oil spout pipe, all inlay on being fixed in the casing of coal-winning machine rocking arm at the both ends of oil spout pipe, the middle part of spouting the oil spout pipe exposes in the spur gear intracavity, a plurality of nozzle openings have been seted up on the pipe wall of oil spout pipe, the nozzle opening is towards the flank of tooth of the low-speed level spur gear of the gear drive system of coal-winning machine rocking arm, and when oil spout the pipe had a plurality ofly, each oil spout pipe is connected respectively the different exports of oil circuit.
14. The forced lubrication system for the rocker arm of the high-power coal mining machine as claimed in claim 12 or 13, wherein: a plurality of oil passing holes are formed in a cavity wall between a straight gear cavity and a planetary gear cavity of the coal mining machine rocker arm, and the oil passing holes are close to but avoid the edge of the cavity wall.
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| CN202020420561.8U CN212155735U (en) | 2020-03-28 | 2020-03-28 | Forced lubricating system for rocker arm of high-power coal mining machine |
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| CN202020420561.8U CN212155735U (en) | 2020-03-28 | 2020-03-28 | Forced lubricating system for rocker arm of high-power coal mining machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055850A1 (en) * | 2022-09-15 | 2024-03-21 | 扎赉诺尔煤业有限责任公司 | Traveling wheel assembly for coal mining machine, and coal mining machine |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055850A1 (en) * | 2022-09-15 | 2024-03-21 | 扎赉诺尔煤业有限责任公司 | Traveling wheel assembly for coal mining machine, and coal mining machine |
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