CN214838268U - Mounting structure of hydraulic unit - Google Patents
Mounting structure of hydraulic unit Download PDFInfo
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- CN214838268U CN214838268U CN202120419189.3U CN202120419189U CN214838268U CN 214838268 U CN214838268 U CN 214838268U CN 202120419189 U CN202120419189 U CN 202120419189U CN 214838268 U CN214838268 U CN 214838268U
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Abstract
The utility model relates to a mounting structure of hydraulic unit, including fixed gear box casing and hydraulic unit, be equipped with left oil bath in the fixed gear box casing, right oil bath, left side hydro-cylinder installation cavity and right hydro-cylinder installation cavity, left side oil bath and right oil bath are linked together at the bottom, hydraulic unit can dismantle fixed mounting on fixed gear box casing and lie in about two hydro-cylinder installation cavities one of them, hydraulic unit place hydro-cylinder installation cavity and the affiliated coal-winning machine of fixed gear box casing during operation position are located same one side of left right direction in the hydro-cylinder installation cavity under different working face inclination operating modes, the left side pipeline channel that extends down around still being equipped with in the fixed gear box casing, right side pipeline channel down, left side pipeline channel and right side pipeline channel up, the condenser tube of coal-winning machine, oil pipe, the cable is laid respectively in different passageways. The utility model discloses make coal-winning machine during operation under the situation at great working face inclination, its hydraulic unit does not receive the influence that the oil level changes and can normally work all the time.
Description
Technical Field
The utility model relates to a be used in mounting structure of hydraulic unit on coal-winning machine, be particularly useful for extremely thin coal seam coal-winning machine.
Background
In mining of extremely thin coal seams, in order to increase the adaptability of a coal mining machine, a fixed reduction gearbox is usually arranged on the side of a conveyor and close to the side of a coal wall, and a compact cutting transmission structure is arranged in the fixed reduction gearbox, so that the space of an oil tank and the like which can be used as a hydraulic unit is relatively small, particularly, when a working face has a large inclination angle, the change of the oil level in the oil tank has a large influence on oil absorption of the hydraulic unit, and correspondingly, the change of the oil level in the oil tank has a large influence on height adjusting systems on the left side and the right side. Some coal mining machines are cancelled with hydraulic units, so that the height adjustment operation cannot be carried out at any time in the mining process, and only once auxiliary height adjustment operation can be carried out manually when the coal mining machine runs to two ends of a working face once mining is finished, which brings great inconvenience, time and labor waste. The cable of the coal mining machine is greatly lengthened to fix the reduction gearbox, so that although the space of the oil tank can be enlarged, the quick propulsion of the ultra-thin coal seam can be seriously influenced under the working condition that the bottom plate has large fluctuation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic unit's mounting structure, when the time of work under the situation at great working face inclination of extremely thin coal seam coal-winning machine, its hydraulic unit does not receive the influence that the oil level changes and can normally work all the time.
The utility model discloses a main technical scheme has:
the utility model provides a hydraulic unit's mounting structure, includes fixed reduction box casing and hydraulic unit, be equipped with the motor installation cavity in the fixed reduction box casing, be located left oil bath and left hydro-cylinder installation cavity in the motor installation cavity and be located right oil bath and right hydro-cylinder installation cavity on motor installation cavity right side, left side oil bath and right oil bath are linked together through controlling the tubulose cavity that extends in the bottom, hydraulic unit can dismantle fixed mounting on fixed reduction box casing and lie in about two hydro-cylinder installation cavities one of them, the lower one side oil bath in position lies in same one side of left and right directions with the affiliated coal-winning machine of fixed reduction box casing during operation under different working face inclination operating modes in hydraulic unit place hydro-cylinder installation cavity.
The front ends of the left lower pipeline channel and the right lower pipeline channel are closed, the rear ends of the left lower pipeline channel and the right lower pipeline channel are respectively communicated with the left oil pool and the right oil pool, the front ends of the left lower pipeline channel and the right lower pipeline channel are respectively provided with an oil suction port and an oil return port, the oil suction port and the oil return port of the left lower pipeline channel are communicated with the left oil cylinder mounting cavity, the oil suction port and the oil return port of the right lower pipeline channel are communicated with the right oil cylinder mounting cavity, an oil suction pipe of the hydraulic unit is connected to the oil suction port corresponding to the oil cylinder mounting cavity in which the hydraulic unit is located, an oil return pipe of an oil cylinder control valve in the oil cylinder mounting cavity in which the hydraulic unit is located is connected to the corresponding oil return port, and the left lower pipeline channel and the right lower pipeline channel are respectively arranged below the left side and the right side of the motor mounting cavity.
The left lower pipeline channel and the right lower pipeline channel can be of a cavity structure located in the solid wall of the fixed reduction gearbox shell or of a tubular steel structure laid in the fixed reduction gearbox shell.
And the pipeline channel through which the suction and return oil pipe passes preferably is positioned on the same side of the left and right direction as the oil cylinder mounting cavity where the hydraulic unit is positioned.
The fixed reduction gearbox shell can be further provided with a left upper pipeline channel and a right upper pipeline channel which extend from front to back, the left upper pipeline channel and the right upper pipeline channel are cavity structures in the fixed reduction gearbox shell, and the left upper pipeline channel and the right upper pipeline channel are respectively arranged at the upper left side and the upper right side of the motor installation cavity.
One of a cooling water pipe and a cable of the coal mining machine penetrates through the upper left pipeline channel, the other one of the cooling water pipe and the cable penetrates through the upper right pipeline channel, and the pipeline channel through which the cooling water pipe penetrates is preferably located on the same side of the left and right direction with the oil cylinder installation cavity where the hydraulic unit is located.
The left oil cylinder mounting cavity and the right oil cylinder mounting cavity are preferably located on the foremost side in the fixed reduction gearbox shell, a front mounting cavity of the left cutting transmission system is arranged between the left oil cylinder mounting cavity and the left oil pool, and a front mounting cavity of the right cutting transmission system is arranged between the right oil cylinder mounting cavity and the right oil pool.
The hydraulic unit preferably comprises a gear pump, a first-stage planetary speed increasing mechanism and a first-stage dead axle gear speed increasing mechanism which are sequentially connected in a transmission mode, wherein the power input end and the power output end of the first-stage planetary speed increasing mechanism are respectively a planet carrier and a sun gear, the sun gear of the first-stage planetary speed increasing mechanism is in coaxial spline connection with the head end gear of the first-stage dead axle gear speed increasing mechanism, the tail end gear of the first-stage dead axle gear speed increasing mechanism is in coaxial spline connection with the transmission shaft of the gear pump, the rear end of the planet carrier of the first-stage planetary speed increasing mechanism is in front end spline connection with the output gear of the middle section of the cutting transmission system on the corresponding side, and the oil cylinder installation cavity where the hydraulic unit is located is connected with the cutting transmission system to which the output gear of the planet carrier belongs, and is located on the same side in the left and right directions.
The front end and the rear end of the output gear are respectively and rotatably supported on the side walls of the front part and the rear part in the fixed reduction gearbox shell, the front end of the output gear is preferably provided with two stepped grooves with a large front part and a small rear part, the groove close to the rear part is provided with an internal spline, the rear end of the planet carrier of the primary planet speed-increasing mechanism is provided with an external spline, and the rear end of the planet carrier is positioned in the groove close to the rear part and is matched with the internal spline to form spline connection.
A first end cover is detachably and fixedly arranged on one side wall of the front part of the output gear supporting the left side and the right side, a second end cover is detachably and fixedly arranged on the other side wall of the front part of the output gear supporting the left side and the right side, the front part of the output gear on the same side with the hydraulic unit is provided with the first end cover, the front part of the output gear on the other side is provided with the second end cover, the rear part of the first end cover is inserted into a groove of the corresponding output gear close to the front part, the main body of the primary planetary speed increasing mechanism is arranged in an inner cavity of the rear part of the first end cover, the rear part of the first end cover is used as an inner gear ring of the primary planetary speed increasing mechanism, the primary fixed-axis gear speed increasing mechanisms are all arranged in an inner cavity of the front part of the first end cover, the output end of the sun gear extends forwards to enter an inner cavity of the front part of the first end cover and is connected with the head end gear through a coaxial spline, and the gear pump is arranged on the front end surface of the first end cover, the transmission shaft of the gear pump extends backwards into the inner cavity of the front part of the first end cover and is in coaxial spline connection with the tail end gear, and the second end cover closes the front side wall of the corresponding side from the front.
The utility model has the advantages that:
through setting left oil pool and right oil pool to the structure of intercommunication each other, according to the inclination that uses the working face, with hydraulic unit preinstallation in the lower one side hydro-cylinder installation cavity in position, be in lower position when guaranteeing the oil absorption of hydraulic unit to guarantee hydraulic unit's normal work, only need one set of hydraulic unit can satisfy the fuel feeding demand of controlling the hydro-cylinder simultaneously moreover.
Utilize cavity on steel pipe or the fixed gear box casing to set up lower left pipeline way, lower right pipeline way, upper left pipeline way and upper right pipeline way, can make things convenient for the condenser tube of coal-winning machine, hydraulic unit to inhale back in order of oil pipe and cable etc. walk line and mutual separation greatly, convenient maintenance management reduces the pipeline trouble.
Because the oil cylinder mounting cavity close to the cavity structure is arranged in front of the front mounting cavity of the cutting transmission system and the oil pool, the whole gravity center of the coal mining machine can be deviated to the mining side, and is closer to the position of the supporting leg (or the shovel plate) than the gravity center of the coal mining machine with the traditional structure, so that the stability of the coal mining machine in a static state and a walking state is improved.
Because the output gear at the middle section of the cutting transmission system is used as a power output node, the power is transmitted to the gear pump through the primary planetary speed increasing mechanism and the primary fixed-axis gear speed increasing mechanism, and the gear pump is led out without independently being provided with power sources such as a pump motor and the like.
The adoption of the one-stage planetary speed increasing mechanism can realize larger speed increasing ratio by occupying smaller space, is beneficial to saving installation space, and is easier to realize matching with a cutting transmission system adopting a multipole motor.
The front end of the output gear is provided with a two-step groove with a big front part and a small back part, the back part of the first end cover is inserted into the groove of the output gear close to the front part, and the main body of the primary planetary speed increasing mechanism is arranged in the inner cavity of the back part of the first end cover, which is equivalent to the primary planetary speed increasing mechanism is integrally arranged in the groove of the front end of the output gear, so that the axial installation space is obviously saved.
The primary fixed-shaft gear speed-increasing mechanism is completely arranged in the first end cover, so that the structure of the hydraulic unit is quite compact, the installation space of the hydraulic unit is further saved, the axial space occupation is particularly reduced, and the primary fixed-shaft gear speed-increasing mechanism is particularly suitable for thin or ultra-thin coal seam mining machines.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view (section A-A of FIG. 1) of the upper and lower conduit channels of a structure;
FIG. 3 is a schematic diagram of the structure of one embodiment of the hydraulic unit;
FIG. 4 is a partial schematic view of the output gear;
FIG. 5 is a schematic structural view of one embodiment of the first end cap;
FIG. 6 is a cross-sectional view of the upper and lower conduit channels in an alternative configuration.
Reference numerals:
1. a hydraulic unit; 11. a gear pump; 121. a planet carrier; 122. a sun gear; 131. a head end gear; 132. a tip gear; 133. an idler pulley;
2. fixing a gearbox shell; 21. a motor mounting cavity; 22. an oil sump; 23. a tubular cavity; 24. an oil cylinder installation cavity; 25. a front mounting cavity of the cutting transmission system; 26. a lower pipeline channel; 27. an upper pipeline channel;
31. a left oil cylinder; 32. a right cylinder;
4. a cutting drive system; 41. an output gear; 411. a groove at the back; 412. a groove near the front;
5. a first end cap; 51. a rear portion of the first end cap; 52. a front portion of the first end cap;
6. a second end cap;
7. and (5) a small end cover.
Detailed Description
The utility model discloses a hydraulic unit's mounting structure, as shown in fig. 1-6, including fixed gear box casing 2 and hydraulic unit 1, fixed gear box casing is the leading part of coal-winning machine fuselage, is the main structure spare that is used for holding cutting transmission system, is equipped with the cavity of a plurality of differences wherein. The hydraulic unit is used for providing a hydraulic oil source. The fixed reduction gearbox is characterized in that a motor mounting cavity 21, a left oil pool and a left oil cylinder mounting cavity which are located on the left side of the motor mounting cavity, and a right oil pool and a right oil cylinder mounting cavity which are located on the right side of the motor mounting cavity are arranged in the fixed reduction gearbox shell, the left oil pool and the right oil pool are collectively called as an oil pool 22, and the left oil pool and the right oil pool are communicated with each other at the bottom through a tubular cavity 23 which is located in the fixed reduction gearbox shell and extends leftwards and rightwards. The left oil cylinder mounting cavity and the right oil cylinder mounting cavity are collectively called as an oil cylinder mounting cavity 24, and the left oil cylinder 31 and the right oil cylinder 32 are respectively mounted in the left oil cylinder mounting cavity and the right oil cylinder mounting cavity. The hydraulic unit is only one set, and the hydraulic unit can be detachably and fixedly installed on the shell of the fixed reduction gearbox and is positioned in one of the left oil cylinder installation cavity and the right oil cylinder installation cavity. And the oil tank at the lower side of the oil cylinder installation cavity where the hydraulic unit is located and the coal mining machine to which the fixed reduction gearbox shell belongs are positioned at the same side in the left-right direction when the coal mining machine works under different working surface inclination angle working conditions. In other words, according to the actual situation of the inclination angle of the working face, the coal mining machine to which the fixed reduction gearbox shell belongs must have one high position and one low position under the condition of large probability of the left side position and the right side position of the coal mining machine in the future working, and oil liquid can be gathered into the lower oil pool on one side, so that the hydraulic unit is pre-installed in the lower oil cylinder installation cavity on one side, the hydraulic unit can be ensured to be in the lower position when absorbing oil, and the normal working of the hydraulic unit is ensured.
The utility model discloses a one set of hydraulic unit can provide hydraulic drive power for the hydro-cylinder of the left and right sides simultaneously.
A left lower pipe passage and a right lower pipe passage extending back and forth, which may be collectively referred to as a lower pipe passage 26, are also provided in the fixed reduction box housing. The front ends of the left lower pipeline channel and the right lower pipeline channel are closed, the rear ends of the left lower pipeline channel and the right lower pipeline channel are respectively communicated with the left oil pool and the right oil pool, the front ends of the left lower pipeline channel and the right lower pipeline channel are respectively provided with an oil suction opening and an oil return opening, the oil suction opening and the oil return opening of the left lower pipeline channel are communicated with the left oil cylinder mounting cavity, and the oil suction opening and the oil return opening of the right lower pipeline channel are communicated with the right oil cylinder mounting cavity. The arrangement of the left lower pipeline channel and the right lower pipeline channel is equivalent to that the oil suction and return interface of the oil pool is arranged at the position which can be reached in the oil cylinder installation cavity, and the pipe connection operation between the hydraulic unit and the oil cylinder control valve and the oil pool can be carried out in the oil cylinder installation cavity. When the pipe is connected, an oil suction pipe of the hydraulic unit is connected to an oil suction port corresponding to the oil cylinder mounting cavity where the hydraulic unit is located, and an oil return pipe of an oil cylinder control valve in the oil cylinder mounting cavity where the hydraulic unit is located is connected to a corresponding oil return port. And the oil return pipes of the left oil cylinder control valve and the right oil cylinder control valve are communicated.
The lower left and right tubing passages may be hollow structures located in the solid wall of the fixed gearbox housing (see fig. 6), machined after casting, simple in structure, but may occupy a portion of the oil sump space. The left lower pipeline channel and the right lower pipeline channel can also be tubular steel structures laid in the shell of the fixed reduction gearbox (see figure 2), and the occupied space of an oil pool is small. The left lower pipeline channel and the right lower pipeline channel are respectively arranged at the left lower part and the right lower part of the motor installation cavity.
When the inclination angle of the working face of the coal mining machine to be worked is changed reversely, the hydraulic unit is replaced with the oil cylinder mounting cavity on the other side in advance for mounting, and meanwhile, the oil suction pipe and the oil return pipe are also replaced with the oil cylinder mounting cavity on the other side for laying and connecting pipes.
Still be equipped with the upper left pipeline passageway and the upper right pipeline passageway that extend around in the fixed gear box casing, can be collectively referred to as upper pipeline passageway 27. The upper left pipeline channel and the upper right pipeline channel are cavity structures on the fixed reduction gearbox shell and are arranged at the thick part of the inner partition wall of the shell, and the upper left pipeline channel and the upper right pipeline channel are respectively arranged at the upper left part and the upper right part of the motor installation cavity and are close to the top of the fixed reduction gearbox shell.
One of the cooling water tube and the electric cable of the shearer passes through the upper left pipeline channel, and the other passes through the upper right pipeline channel. Different pipelines are laid in different channels, so that the operation is reliable and the maintenance is convenient. The pipeline channel through which the cooling water pipe passes is preferably positioned on the same side of the left and right direction with the oil cylinder installation cavity where the hydraulic unit is positioned. An oil pipe for supplying oil to the oil cylinder control valve in the opposite side oil cylinder installation cavity by the hydraulic unit can also pass through the upper pipeline channel on the same side as the hydraulic unit.
The left oil cylinder installation cavity and the right oil cylinder installation cavity are preferably located on the foremost side in the fixed reduction gearbox shell, a front installation cavity of the left cutting transmission system is arranged between the left oil cylinder installation cavity and the left oil pool, a front installation cavity of the right cutting transmission system is arranged between the right oil cylinder installation cavity and the right oil pool, and the left oil cylinder installation cavity and the right oil pool can be collectively called as the front installation cavity of the cutting transmission system. The oil cylinder mounting cavity 24 close to the cavity structure is arranged in front of the front mounting cavity 25 of the cutting transmission system and the oil pool 22, so that the whole gravity center of the coal mining machine can be deviated to the mining side, and the gravity center of the coal mining machine is closer to the position of a supporting leg (or a shovel plate) than that of the coal mining machine with the traditional structure, and the stability of the coal mining machine in a static state and a walking state is improved.
The hydraulic unit can comprise a gear pump 11 and a primary planetary speed increasing mechanism and a primary fixed-shaft gear speed increasing mechanism which are in transmission connection in sequence. The power input end and the power output end of the first-stage planetary speed increasing mechanism are respectively a planet carrier 121 and a sun gear 122, the sun gear of the first-stage planetary speed increasing mechanism is in coaxial spline connection with a head end gear 131 of the first-stage fixed shaft gear speed increasing mechanism, and a tail end gear 132 of the first-stage fixed shaft gear speed increasing mechanism is in coaxial spline connection with a transmission shaft of the gear pump. The rear end of the planet carrier of the primary planet speed-increasing mechanism is connected with the front end spline of the output gear 41 at the middle section of the cutting transmission system 4 at the corresponding side in the left-right direction. The utility model discloses with output gear draws forth a power take off's branch from the cutting transmission system for the node, and this share of power passes through one-level planet acceleration rate mechanism and one-level dead axle gear acceleration rate mechanism and transmits for gear pump 11, consequently the gear pump need not be equipped with the pump motor alone. The oil cylinder installation cavity where the hydraulic unit is located and a cutting transmission system which is connected with an output gear of the planet carrier belong to are located on the same side in the left-right direction.
The cutting transmission system is a speed reduction transmission system, a certain node after speed reduction is accelerated again by adopting a primary planet speed increasing mechanism and a primary fixed-shaft gear speed increasing mechanism, and finally the rotating speed of the gear pump is increased to the required rotating speed, so that the normal working state of the gear pump is realized. The adoption of the one-stage planetary speed increasing mechanism can realize larger speed increasing ratio by occupying smaller space, is beneficial to saving installation space, and is easier to realize matching with a cutting transmission system adopting a multipole motor.
The front end and the rear end of the output gear are respectively and rotatably supported on the front side wall and the rear side wall in the fixed reduction gearbox shell. The front side wall and the rear side wall are two adjacent side walls in a plurality of positions in the fixed reduction gearbox shell, the front side wall is a partition wall between the oil cylinder mounting cavity and the front mounting cavity of the cutting transmission system on the same side in the embodiment, and the rear side wall is a partition wall between the front mounting cavity of the cutting transmission system and the oil pool on the same side. In the attached drawing, the front end and the rear end of the output gear are respectively and rotatably supported on a front bearing seat and a rear bearing seat through bearings, and the front bearing seat and the rear bearing seat are respectively and fixedly installed on the front side wall and the rear side wall. The front end of the output gear is preferably provided with a two-step groove with a large front part and a small rear part, the groove 411 close to the rear part is provided with an internal spline, the rear end of the planet carrier of the primary planet speed-increasing mechanism is provided with an external spline, and the rear end of the planet carrier extends backwards to the groove close to the rear part and is matched with the internal spline to form spline connection.
One detachable fixed mounting is provided with a first end cover 5 and the other detachable fixed mounting is provided with a second end cover 6 on the front side wall of the output gear supporting the left side and the right side, wherein the first end cover is arranged in front of the output gear on the same side of the hydraulic unit, and the second end cover is arranged in front of the output gear on the other side. The rear part 51 of the first end cover is inserted into the front groove 412 of the corresponding output gear, the main body of the primary planetary speed increasing mechanism is installed in the inner cavity of the rear part of the first end cover, and equivalently, the primary planetary speed increasing mechanism is completely arranged in the front groove of the output gear 41, so that the axial installation space of the hydraulic unit is obviously saved. The rear section of the inner cavity at the rear part of the first end cover is arranged as an inner gear, namely the rear part of the first end cover is used as an inner gear ring of the primary planetary speed increasing mechanism. The primary fixed-axis gear speed increasing mechanisms are all installed in the inner cavity of the front portion 52 of the first end cover. The output end of the sun gear extends forward into the inner cavity of the front portion of the first end cover and is in coaxial spline coupling with the head end gear. The gear pump is mounted on the front end face of the first end cover, and a transmission shaft of the gear pump extends backwards into an inner cavity of the front portion of the first end cover and is in coaxial spline coupling with the end gear. The first-stage fixed-shaft gear speed-increasing mechanism is completely arranged in the first end cover, so that the structure of the hydraulic unit is quite compact, the installation space of the hydraulic unit is further saved, the axial space occupation is particularly reduced, and the hydraulic unit is particularly suitable for thin or ultra-thin coal seam mining machines. The second end cap 6 closes the front side wall of the respective side from the front. When the hydraulic unit needs to be replaced with the oil cylinder mounting cavity on the other side for mounting, the original first end cover needs to be replaced with the second end cover, and the original second end cover needs to be replaced with the first end cover.
The front bearing seat can be provided with an open front spigot structure for positioning the first end cover and the second end cover. The matched positioning structures on the first end cover and the second end cover comprise annular end surfaces and cylindrical surfaces, and the annular end surfaces and the cylindrical surfaces are arranged at the front parts of the first end cover and the second end cover. And a seal is arranged between the cylindrical matching positioning surfaces between the first end cover and the front bearing seat and between the second end cover and the front bearing seat.
An idler wheel 133 can be further arranged between the head end gear and the tail end gear, and the idler wheel, the head end gear and the tail end gear are all externally meshed.
The first end cover is internally provided with three inner cavities, the primary planet speed increasing mechanism and the head end gear are arranged in the first inner cavity, the second inner cavity is internally provided with an idler gear, and the third inner cavity is internally provided with a tail end gear and an exposed transmission shaft of the gear pump. The first inner cavity is communicated with the front and the back, and the front end surface of the first end cover is also provided with a small end cover 7 which is used for sealing the first inner cavity from the front, namely the first end cover inner cavity where the head end gear is located. The gear pump seals the second and third inner cavities from the front. The front end of the head end gear is rotatably supported on the small end cover through a bearing, and the rear end of the head end gear is rotatably supported on the first end cover through a bearing.
The front-back direction referred to herein corresponds to the up-down direction of fig. 1, respectively.
Claims (10)
1. A mounting structure of a hydraulic unit, characterized in that: including fixed gear box casing and hydraulic unit, be equipped with the motor installation cavity in the fixed gear box casing, be located left oil bath and left hydro-cylinder installation cavity in the motor installation cavity and be located right oil bath and right hydro-cylinder installation cavity on motor installation cavity right side, left side oil bath and right oil bath are linked together through controlling the tubulose cavity that extends in the bottom, hydraulic unit can dismantle fixed mounting on fixed gear box casing and be located about two hydro-cylinder installation cavities one of them, hydraulic unit place hydro-cylinder installation cavity and the affiliated coal-winning machine of fixed gear box casing during operation position are located same one side of left right direction with the lower one side oil bath of direction under different working face inclination operating modes.
2. A mounting structure of a hydraulic unit according to claim 1, wherein: the front ends of the left lower pipeline channel and the right lower pipeline channel are closed, the rear ends of the left lower pipeline channel and the right lower pipeline channel are respectively communicated with the left oil pool and the right oil pool, the front ends of the left lower pipeline channel and the right lower pipeline channel are respectively provided with an oil suction port and an oil return port, the oil suction port and the oil return port of the left lower pipeline channel are communicated with the left oil cylinder mounting cavity, the oil suction port and the oil return port of the right lower pipeline channel are communicated with the right oil cylinder mounting cavity, an oil suction pipe of the hydraulic unit is connected to the oil suction port corresponding to the oil cylinder mounting cavity in which the hydraulic unit is located, an oil return pipe of an oil cylinder control valve in the oil cylinder mounting cavity in which the hydraulic unit is located is connected to the corresponding oil return port, and the left lower pipeline channel and the right lower pipeline channel are respectively arranged below the left side and the right side of the motor mounting cavity.
3. A mounting structure of a hydraulic unit according to claim 2, wherein: the left lower pipeline channel and the right lower pipeline channel are of cavity structures located in the solid wall of the fixed reduction gearbox shell or tubular steel structures laid in the fixed reduction gearbox shell.
4. A mounting structure of a hydraulic unit according to claim 3, wherein: the fixed reduction gearbox shell is also internally provided with a left upper pipeline channel and a right upper pipeline channel which extend from front to back, the left upper pipeline channel and the right upper pipeline channel are cavity structures in the fixed reduction gearbox shell, and the left upper pipeline channel and the right upper pipeline channel are respectively arranged at the upper left side and the upper right side of the motor installation cavity.
5. A mounting structure of a hydraulic unit according to claim 4, wherein: one of a cooling water pipe and a cable of the coal mining machine penetrates through the upper left pipeline channel, the other one of the cooling water pipe and the cable penetrates through the upper right pipeline channel, and the pipeline channel through which the cooling water pipe penetrates and the oil cylinder mounting cavity where the hydraulic unit is located are located on the same side in the left-right direction.
6. A mounting structure of a hydraulic unit according to claim 1, 2, 3, 4 or 5, wherein: the left oil cylinder mounting cavity and the right oil cylinder mounting cavity are located on the foremost side in the fixed reduction gearbox shell, a front mounting cavity of the left cutting transmission system is arranged between the left oil cylinder mounting cavity and the left oil pool, and a front mounting cavity of the right cutting transmission system is arranged between the right oil cylinder mounting cavity and the right oil pool.
7. A mounting structure of a hydraulic unit according to claim 6, wherein: the hydraulic unit comprises a gear pump, a first-stage planetary speed increasing mechanism and a first-stage fixed-shaft gear speed increasing mechanism which are sequentially connected in a transmission mode, wherein the power input end and the power output end of the first-stage planetary speed increasing mechanism are respectively a planet carrier and a sun gear, the sun gear of the first-stage planetary speed increasing mechanism is connected with a first-end gear of the first-stage fixed-shaft gear speed increasing mechanism through coaxial splines, a tail end gear of the first-stage fixed-shaft gear speed increasing mechanism is connected with a transmission shaft of the gear pump through coaxial splines, the rear end of the planet carrier of the first-stage planetary speed increasing mechanism is connected with a front end spline of an output gear of a cutting transmission system of a corresponding side, and an oil cylinder installation cavity at the hydraulic unit is connected with a cutting transmission system of the output gear of the planet carrier, and the cutting transmission system is located on the same side of the left and right directions.
8. A mounting structure of a hydraulic unit according to claim 7, wherein: the front end and the rear end of the output gear are respectively and rotatably supported on the side walls of the front part and the rear part in the fixed reduction gearbox shell, the front end of the output gear is provided with two stepped grooves with a large front part and a small rear part, the groove close to the rear part is provided with an internal spline, the rear end of the planet carrier of the primary planet speed increasing mechanism is provided with an external spline, and the rear end of the planet carrier is positioned in the groove close to the rear part and is matched with the internal spline to form spline connection.
9. A mounting structure of a hydraulic unit according to claim 8, wherein: a first end cover is detachably and fixedly arranged on one side wall of the front part of the output gear supporting the left side and the right side, a second end cover is detachably and fixedly arranged on the other side wall of the front part of the output gear supporting the left side and the right side, the front part of the output gear on the same side with the hydraulic unit is provided with the first end cover, the front part of the output gear on the other side is provided with the second end cover, the rear part of the first end cover is inserted into a groove of the corresponding output gear close to the front part, the main body of the primary planetary speed increasing mechanism is arranged in an inner cavity of the rear part of the first end cover, the rear part of the first end cover is used as an inner gear ring of the primary planetary speed increasing mechanism, the primary fixed-axis gear speed increasing mechanisms are all arranged in an inner cavity of the front part of the first end cover, the output end of the sun gear extends forwards to enter an inner cavity of the front part of the first end cover and is connected with the head end gear through a coaxial spline, and the gear pump is arranged on the front end surface of the first end cover, the transmission shaft of the gear pump extends backwards into the inner cavity of the front part of the first end cover and is in coaxial spline connection with the tail end gear, and the second end cover closes the front side wall of the corresponding side from the front.
10. A mounting structure of a hydraulic unit according to claim 9, wherein: an idler wheel is further arranged between the head end gear and the tail end gear, and the idler wheel, the head end gear and the tail end gear are all externally meshed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120419189.3U CN214838268U (en) | 2021-02-25 | 2021-02-25 | Mounting structure of hydraulic unit |
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| CN202120419189.3U CN214838268U (en) | 2021-02-25 | 2021-02-25 | Mounting structure of hydraulic unit |
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| CN214838268U true CN214838268U (en) | 2021-11-23 |
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| CN (1) | CN214838268U (en) |
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2021
- 2021-02-25 CN CN202120419189.3U patent/CN214838268U/en active Active
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