CN211009333U - Hydraulic valve block for hydraulic system of crushing arm of coal mining machine - Google Patents
Hydraulic valve block for hydraulic system of crushing arm of coal mining machine Download PDFInfo
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- CN211009333U CN211009333U CN201921165934.5U CN201921165934U CN211009333U CN 211009333 U CN211009333 U CN 211009333U CN 201921165934 U CN201921165934 U CN 201921165934U CN 211009333 U CN211009333 U CN 211009333U
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Abstract
The utility model discloses a hydraulic valve piece for broken arm hydraulic system of coal-winning machine, be equipped with first balanced valve oil duct on this hydraulic valve piece, the second balanced valve oil duct, first reposition of redundant personnel oil duct, second reposition of redundant personnel oil duct, first relief valve oil duct, the second relief valve oil duct, relief valve draining oil duct and energy storage ware oil duct and with the communicating a plurality of hydraulic fluid ports of each oil duct, first balanced valve oil duct, the second balanced valve oil, first reposition of redundant personnel oil duct and second reposition of redundant personnel oil duct are used for controlling stretching out and retracting of the broken arm hydro-cylinder of coal-winning machine, relief valve draining oil duct is used for making the pressure oil that the relief valve let out return the oil tank, first relief valve oil duct, the second relief valve oil duct is used for letting out the pressure in the pipeline, the energy storage ware oil duct is used for connecting the. The hydraulic valve block can clearly and simply connect the oil ports of the valves of the oil circuit of the crushing arm of the coal mining machine, effectively reduces the whole volume, increases the pressure resistance of the oil circuit and reduces the leakage point of the pipeline.
Description
Technical Field
The utility model relates to a hydraulic valve block technical field especially relates to a hydraulic valve block for broken arm hydraulic system of coal-winning machine.
Background
The crusher is a special device for crushing large coal blocks on a coal mining machine, an oil cylinder of a crushing arm on the crusher of the coal mining machine is required to be provided with a balance valve, a safety valve, an energy accumulator and a pressure release valve, and meanwhile, the oil cylinder of a top protection plate is also required to be provided with the balance valve, the safety valve and the pressure release valve. The traditional piping mode of these two oil circuits is that the corresponding oil circuit is joined in marriage through tubular valve and joint, and this kind of mode needs various joints to connect the hydraulic fluid port of each valve and realizes the connection of oil circuit, and this kind of mode installation is troublesome, and owing to there are a large amount of joints, so the position that needs to seal is very much, and possible leak source is just also very much, and this condition that causes this section pipeline oil leak frequently takes place easily, needs to maintain repeatedly. To the above-mentioned problem, put forward the utility model discloses specially.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic valve piece for broken arm hydraulic system of coal-winning machine, this hydraulic valve piece can be clear succinct couple together each valve member hydraulic fluid port with the broken arm oil circuit of coal-winning machine, make the oil circuit connection more simplify, overall structure is compacter, and overall reliability is higher, the effectual whole volume that has reduced, increased the pressure resistance of oil circuit and reduced the dew point of pipeline.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a hydraulic valve block for broken arm hydraulic system of coal-winning machine, includes the valve body, be equipped with five oil ducts on the valve body and respectively with the communicating a plurality of hydraulic fluid ports of five oil ducts, five oil ducts are first balanced valve oil duct, second balanced valve oil duct, first reposition of redundant personnel oil duct, second reposition of redundant personnel oil duct and energy storage ware oil duct respectively, wherein:
the two ends of the first balance valve oil duct are respectively connected with a seventh oil port and an eleventh oil port, the seventh oil port and the eleventh oil port are respectively used for connecting a rod cavity of the crushing arm oil cylinder and an A port of a reversing valve in the multi-way valve, the first balance valve oil duct is provided with a first balance valve, and the first balance valve is provided with a first control valve for controlling the opening and the closing of the first balance valve;
the two ends of the second balance valve oil duct are respectively connected with a sixth oil port and a tenth oil port, the sixth oil port and the tenth oil port are respectively used for connecting a rodless cavity of the crushing arm oil cylinder and a port B of the reversing valve in the multi-way valve, a second balance valve is mounted on the second balance valve oil duct, and a second control valve for controlling the second balance valve to be opened and closed is arranged on the second balance valve;
one end of the first branch oil duct is connected with a seventh oil port, and the other end of the first branch oil duct is connected with a second control valve;
one end of the second branch oil duct is connected with a sixth oil port, and the other end of the second branch oil duct is connected with a first control valve;
and two ends of the oil duct of the energy accumulator are respectively connected with a ninth oil port and an eleventh oil port, and the ninth oil port is used for connecting an external oil port of the energy accumulator.
Preferably, still be equipped with first relief valve oil duct, second relief valve oil duct, relief valve draining oil duct on the valve body and respectively with first relief valve oil duct, second relief valve oil duct and the communicating a plurality of hydraulic fluid ports of relief valve draining oil duct, No. four hydraulic fluid ports and No. eleven hydraulic fluid port are connected respectively to the both ends of first relief valve oil duct, No. four hydraulic fluid ports are used for installing the relief valve, No. five hydraulic fluid ports and No. ten hydraulic fluid ports are connected respectively to the both ends of second relief valve oil duct, No. five hydraulic fluid ports are used for installing the relief valve, No. eight hydraulic fluid ports and No. ten hydraulic fluid ports are connected respectively to the both ends of relief valve draining oil duct, No. eight hydraulic fluid ports are used for connecting the oil tank return port, install.
Preferably, one end of the oil passage of the first pressure release valve is communicated with the oil passage between the first balance valve and the eleventh oil port, the other end of the oil passage of the first pressure release valve is connected with the fourth oil port, one end of the oil passage of the second pressure release valve is communicated with the oil passage between the second balance valve and the tenth oil port, and the other end of the oil passage of the second pressure release valve is connected with the fifth oil port.
Preferably, the valve body is further provided with a first oil port, a second oil port and a third oil port, the first oil port, the second oil port and the third oil port are all insertion holes, the first balance valve is inserted in the second oil port, the seventh oil port and the eleventh oil port are respectively communicated with the first balance valve, the second balance valve is inserted in the third oil port, the sixth oil port and the tenth oil port are respectively communicated with the second balance valve, the safety valve is inserted in the first oil port, and the eighth oil port and the tenth oil port are respectively communicated with the safety valve.
Preferably, the valve body sets up to the cuboid structure, be equipped with the vertical fixed orifices that runs through being used for with valve body fixed mounting on the broken arm of coal-winning machine of valve body upper surface and lower surface on the valve body, the fixed orifices is the counter bore and sets up respectively in the four corners department of valve body, all not set up the hydraulic fluid port on the upper surface of valve body and the lower surface.
Preferably, an oil port, No. two oil ports and No. three oil ports are located on the same side of valve body, No. eight oil ports, No. nine oil ports, No. ten oil ports and No. eleven oil ports are located on the valve body and on the side opposite to the side where the oil port is located, No. one oil port and No. eight oil ports, No. two oil ports and No. eleven oil ports and No. three oil ports and No. ten oil ports set up with the axle center respectively and communicate with each other.
Preferably, the fourth oil port and the seventh oil port are located on the side face, adjacent to the second oil port, of the valve body, the fifth oil port and the sixth oil port are located on the side face, adjacent to the third oil port, of the valve body, and the fourth oil port and the fifth oil port are coaxially arranged and are not communicated with each other.
Preferably, the center line of the oil port seven is perpendicular to the center line of the oil port two and located on the same plane, the center line of the oil port six is perpendicular to the center line of the oil port three and located on the same plane, and the center line of the oil port four is perpendicular to the center line of the oil port nine and located on the same plane.
Preferably, the valve body is further provided with a plurality of process holes communicated with the auxiliary oil ports, plugs for sealing and preventing oil leakage are mounted in the process holes, and the upper surface of the valve body is not provided with the process holes.
Preferably, the oil ports from the fourth oil port to the eleventh oil port are all screw ports, and annular mounting surfaces are arranged at openings of the screw ports.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model provides a hydraulic valve piece for broken arm hydraulic system of coal-winning machine, be provided with eight oil ducts on this hydraulic valve piece and with the communicating a plurality of hydraulic fluid ports of each oil duct, this hydraulic valve piece couples together each valve member hydraulic fluid port of the broken arm oil circuit of coal-winning machine, external pipe fitting has been reduced effectively, make the oil circuit connection more simplify, overall structure is compacter, overall reliability is higher, the effectual whole volume that has reduced, the pressure resistance who has increased the oil circuit with reduced the dew point of pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine of the present invention.
Fig. 2 is the utility model discloses a structural schematic diagram of a hydraulic valve piece for coal-winning machine crushing arm hydraulic system.
Fig. 3 is a front view of the hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine of the present invention.
Fig. 4 is a right side view of the hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine of the present invention.
Fig. 5 is a left side view of the hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine of the present invention.
Fig. 6 is a bottom view of the hydraulic valve block for a coal mining machine crushing arm hydraulic system of the present invention.
Fig. 7 is a cross-sectional view of fig. 3A-a.
Fig. 8 is a cross-sectional view of fig. 3B-B.
Fig. 9 is a cross-sectional view of fig. 3C-C.
Fig. 10 is a cross-sectional view of fig. 4D-D.
In the figure: the hydraulic cylinder comprises a first oil port 1, a second oil port 2, a third oil port 3, a fourth oil port 4, a fifth oil port 5, a sixth oil port 6, a seventh oil port 7, an eighth oil port 8, a ninth oil port 9, a tenth oil port 10, an eleventh oil port 11, a valve body 12, a 23-process hole and a 24-fixing hole.
Detailed Description
The core of the utility model lies in providing a hydraulic valve piece for broken arm hydraulic system of coal-winning machine, this hydraulic valve piece can be clear succinct couple together each valve member hydraulic fluid port of the broken arm oil circuit of coal-winning machine, make the oil circuit connection more simplify, overall structure is compacter, and overall reliability is higher, the effectual whole volume that has reduced, increased the pressure resistance of oil circuit and reduced the dew point of pipeline.
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description is given with reference to the accompanying drawings of the present invention for clear and complete description of the technical solution of the present invention. Based on the embodiments in the present application, other similar embodiments obtained by persons of ordinary skill in the art without any creative effort shall fall within the protection scope of the present application.
As shown in fig. 1 to 10, the hydraulic valve block for the hydraulic system of the breaking arm of the coal mining machine provided in this embodiment includes a valve body 12, the valve body 12 is configured in a rectangular parallelepiped structure, eight oil passages, eleven oil ports respectively communicated with the eight oil passages, and fixing holes 24 vertically penetrating through the upper surface and the lower surface of the valve body 12 and used for fixedly mounting the valve body 12 on the breaking arm of the coal mining machine, and the fixing holes 24 are counter bores and respectively disposed at four corners of the valve body 12.
Eleven oil ports are respectively a first oil port 1, a second oil port 2, a third oil port 3, a fourth oil port 4, a fifth oil port 5, a sixth oil port 6, a seventh oil port 7, an eighth oil port 8, a ninth oil port 9, a tenth oil port 10 and an eleven oil port 11, and oil ports are not arranged on the upper surface and the lower surface of the valve body 12. The first oil port 1, the second oil port 2 and the third oil port 3 are located on the same side face of the valve body 12, the eighth oil port 8, the ninth oil port 9, the tenth oil port 10 and the eleventh oil port 11 are located on the side face, opposite to the side face where the first oil port 1 is located, of the valve body 12, the fourth oil port 4 and the seventh oil port 7 are located on the side face, adjacent to the second oil port 2, of the valve body 12, the fifth oil port 5 and the sixth oil port 6 are located on the side face, adjacent to the third oil port 3, of the valve body 12, the first oil port 1, the eighth oil port 8, the second oil port 2, the eleventh oil port 11, the third oil port 3 and the tenth oil port 10 are coaxially arranged and communicated with each other, and the fourth oil port 4 and the fifth oil port 5 are coaxially arranged and not communicated with each other respectively. The center line of the seventh oil port 7 is perpendicular to the center lines of the second oil port 2 and the eleventh oil port 11 and is located on the same plane, the center line of the sixth oil port 6 is perpendicular to the center lines of the third oil port 3 and the tenth oil port 10 and is located on the same plane, and the center line of the fourth oil port 4 is perpendicular to the center line of the ninth oil port 9 and is located on the same plane.
The first oil port 1, the second oil port 2 and the third oil port 3 are all plug-in mounting holes, a safety valve is inserted in the first oil port 1, a first balance valve is inserted in the second oil port 2, a first control valve for controlling the first balance valve to open and close is arranged on the first balance valve, a second balance valve is inserted in the third oil port 3, and a second control valve for controlling the second balance valve to open and close is arranged on the second balance valve. No. four hydraulic fluid ports 4 to No. eleven hydraulic fluid ports 11 are all screw ports, and the opening part thereof is provided with an annular mounting surface.
Still be provided with fabrication holes 23 that communicate between a plurality of supplementary hydraulic fluid ports on the valve body 12, all install the end cap of sealed leak protection oil in the fabrication hole 23, do not set up fabrication hole 23 on the upper surface of valve body 12, be provided with four fabrication holes 23 on the lower surface, be provided with two fabrication holes 23 on the side that No. 1 hydraulic fluid port is located, be provided with three fabrication hole 23 on the side that No. five hydraulic fluid port 5 is located, be provided with two fabrication holes 23 on the side that No. four hydraulic fluid ports 4 are located, be provided with 1 fabrication hole 23 on the side that No. eight hydraulic fluid port 8 is located, these fabrication holes 23 are used for supplementary each hydraulic fluid port of intercommunication, the oil duct, be convenient for the processing of this hydraulic valve piece.
The eight oil ducts are respectively a first balance valve oil duct, a second balance valve oil duct, a first shunt oil duct, a second shunt oil duct, a first pressure release valve oil duct, a second pressure release valve oil duct, a safety valve oil drainage oil duct and an energy accumulator oil duct. The two ends of the first balance valve oil channel are respectively connected with a seventh oil port 7 and an eleventh oil port 11, the seventh oil port 7 and the eleventh oil port 11 are respectively connected to the first balance valve, and the seventh oil port 7 and the eleventh oil port 11 are respectively externally connected to a rod cavity of the crushing arm oil cylinder and an A port of a reversing valve in the multi-way valve; two ends of the second balance valve oil duct are respectively connected with a sixth oil port 6 and a tenth oil port 10, the sixth oil port 6 and the tenth oil port 10 are respectively connected to the second balance valve, and the sixth oil port 6 and the tenth oil port 10 are respectively externally connected with a rodless cavity of the crushing arm oil cylinder and a port B of a reversing valve in the multi-way valve; one end of the first branch oil duct is connected with the seventh oil port 7, and the other end of the first branch oil duct is connected with the second control valve; one end of the second branch oil duct is connected with the sixth oil port 6, and the other end of the second branch oil duct is connected with the first control valve. Preferably, one end of the first branch oil passage is communicated with an oil passage between the seventh oil port 7 and the first balance valve, and the other end of the first branch oil passage is connected with the second control valve; one end of the second branch oil duct is connected with the oil duct communication between the sixth oil port 6 and the second balance valve, and the other end of the second branch oil duct is connected with the first control valve.
When a crushing arm of a crusher of a coal mining machine descends, high-pressure oil of an oil way of the crushing arm flows out from an opening A of a reversing valve in a multi-way valve and enters a No. seven oil port 7 of a valve body 12, at the moment, a one-way valve in a first balance valve is opened, the high-pressure oil flows to a rod cavity of an oil cylinder of the crushing arm from the one-way valve in the first balance valve, meanwhile, oil shunted by an oil duct between the No. seven oil port 7 and the first balance valve enters a second control valve through a first shunt oil duct to control a second balance valve to be opened, and the oil of a rodless cavity of the oil cylinder of the crushing arm flows back to the oil tank through the second balance valve; when a crushing arm of the crusher of the coal mining machine ascends, high-pressure oil of an oil path of the crushing arm flows out from a port B of a reversing valve in the multi-way valve and enters a No. six oil port 6 of a valve body 12, at the moment, a one-way valve in a second balance valve is opened, the high-pressure oil flows to a rodless cavity of an oil cylinder of the crushing arm from the one-way valve in the second balance valve to drive the crushing arm to ascend, meanwhile, oil shunted by an oil path between the No. six oil port 6 and the second balance valve enters a first control valve through a second shunt oil path to control a first balance valve to be opened, and oil of a rod cavity of the oil cylinder of the crushing arm flows back to an oil tank through the first.
Two ends of the first pressure release valve oil duct are respectively connected with an oil port 4 and an oil port 11, the oil port 4 is used for installing the pressure release valve, two ends of the second pressure release valve oil duct are respectively connected with an oil port 5 and an oil port 10, and the oil port 5 is used for installing the pressure release valve. As a preferred option of this embodiment, one end of the first pressure release valve oil passage is communicated with the oil passage between the first balance valve and the eleventh oil port 11, the other end of the first pressure release valve oil passage is connected to the fourth oil port 4, one end of the second pressure release valve oil passage is communicated with the oil passage between the second balance valve and the tenth oil port 10, and the other end of the second pressure release valve oil passage is connected to the fifth oil port 5.
When equipment is maintained and repaired, pressure is stored in the pipeline, pressure is relieved firstly during disassembly to prevent oil injection, so that a pressure relief valve is required to relieve the pressure in the pipeline, the pressure in a rod cavity of the crushing arm oil cylinder is relieved by a first pressure relief valve oil passage, and high-pressure oil in the rod cavity of the crushing arm oil cylinder flows into the No. eleven oil port 11 and is discharged through the pressure relief valve at the No. four oil port 4; the pressure of the rodless cavity of the crushing arm oil cylinder is discharged from the oil passage of the second pressure release valve, so that high-pressure oil in the rodless cavity of the crushing arm oil cylinder flows into the tenth oil port 10 and is discharged through the pressure release valve at the fifth oil port 5.
The two ends of the safety valve oil drainage oil duct are respectively connected with an eight oil port 8 and a ten oil port 10, the eight oil port 8 and the ten oil port 10 are respectively communicated with the safety valve at the first oil port 1, and the eight oil port 8 is externally connected with an oil tank return port. When the crushing arm stops working, when the crushing arm descends due to external reasons such as collapse of a coal bed at the top in a mine or falling of a part of the coal bed and the like, the pressure of a rodless cavity of an oil cylinder of the crushing arm rises, overpressure oil needs to be decompressed for protecting the oil cylinder and an oil path, the pressure is within the allowable range of a pipeline, and the pressure oil leaked during decompression flows back to an oil tank through the No. eight oil port 8.
The two ends of the oil duct of the energy accumulator are respectively connected with a No. nine oil port 9 and a No. eleven oil port 11, and the No. nine oil port 9 is externally connected with an external oil port of the energy accumulator. Because the crushing arm oil cylinder needs to continuously apply pulling force when the crusher works, the crushing arm can generate certain pressure, and a rod cavity of the crushing arm oil cylinder needs to keep certain pressure, so that the pressure is continuously stable, and the working effect of the crusher is ensured by using the pressure stabilizing function of the energy accumulator.
The utility model discloses a hydraulic valve piece not only can use in the hydraulic system of the broken arm of coal-winning machine breaker, still can use among the hydraulic system of coal-winning machine roof backplate, makes the entire system maintenance convenient simple more.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a hydraulic valve block for coal-winning machine crushing arm hydraulic system, includes valve body (12), its characterized in that, be equipped with five oil ducts on valve body (12) and respectively with the communicating a plurality of hydraulic fluid ports of five oil ducts, five oil ducts are first balanced valve oil duct, second balanced valve oil duct, first reposition of redundant personnel oil duct, second reposition of redundant personnel oil duct and energy storage ware oil duct respectively, wherein:
the two ends of the first balance valve oil duct are respectively connected with a seventh oil port (7) and an eleventh oil port (11), the seventh oil port (7) and the eleventh oil port (11) are respectively used for connecting a rod cavity of a crushing arm oil cylinder and an A port of a reversing valve in the multi-way valve, a first balance valve is mounted on the first balance valve oil duct, and a first control valve for controlling the first balance valve to be opened and closed is arranged on the first balance valve;
the two ends of the second balance valve oil duct are respectively connected with a sixth oil port (6) and a tenth oil port (10), the sixth oil port (6) and the tenth oil port (10) are respectively used for connecting a rodless cavity of the crushing arm oil cylinder and a port B of a reversing valve in the multi-way valve, a second balance valve is mounted on the second balance valve oil duct, and a second control valve for controlling the second balance valve to be opened and closed is arranged on the second balance valve;
one end of the first branch oil duct is connected with a seventh oil port (7), and the other end of the first branch oil duct is connected with a second control valve;
one end of the second branch oil duct is connected with a sixth oil port (6), and the other end of the second branch oil duct is connected with a first control valve;
the oil passage of the energy accumulator is characterized in that two ends of the oil passage of the energy accumulator are respectively connected with a ninth oil port (9) and an eleventh oil port (11), and the ninth oil port (9) is used for being connected with an external oil port of the energy accumulator.
2. The hydraulic valve block for a shearer breaker arm hydraulic system of claim 1, the valve body (12) is also provided with a first pressure relief valve oil duct, a second pressure relief valve oil duct, a safety valve oil drainage oil duct and a plurality of oil ports which are respectively communicated with the first pressure relief valve oil duct, the second pressure relief valve oil duct and the safety valve oil drainage oil duct, two ends of the oil passage of the first pressure release valve are respectively connected with a fourth oil port (4) and an eleventh oil port (11), the fourth oil port (4) is used for installing a pressure release valve, two ends of an oil passage of the second pressure release valve are respectively connected with the fifth oil port (5) and the tenth oil port (10), the fifth oil port (5) is used for installing a pressure release valve, two ends of an oil drainage oil duct of the pressure release valve are respectively connected with an eighth oil port (8) and a tenth oil port (10), and the number eight oil port (8) is used for connecting an oil return port of the oil tank, and the safety valve is installed on the oil drainage duct of the safety valve.
3. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 2, wherein one end of the oil passage of the first pressure release valve is communicated with the oil passage between the first balance valve and the eleventh oil port (11), the other end of the oil passage of the first pressure release valve is connected with the fourth oil port (4), one end of the oil passage of the second pressure release valve is communicated with the oil passage between the second balance valve and the tenth oil port (10), and the other end of the oil passage of the second pressure release valve is connected with the fifth oil port (5).
4. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 3, wherein the valve body (12) is further provided with a first oil port (1), a second oil port (2) and a third oil port (3), the first oil port (1), the second oil port (2) and the third oil port (3) are all insertion holes, the first balance valve is inserted into the second oil port (2), the seventh oil port (7) and the eleventh oil port (11) are respectively communicated with the first balance valve, the second balance valve is inserted into the third oil port (3), the sixth oil port (6) and the tenth oil port (10) are respectively communicated with the second balance valve, the safety valve is inserted into the first oil port (1), and the eighth oil port (8) and the tenth oil port (10) are respectively communicated with the safety valve.
5. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 4, wherein the valve body (12) is arranged in a rectangular parallelepiped structure, fixing holes (24) vertically penetrating through the upper surface and the lower surface of the valve body (12) and used for fixedly mounting the valve body (12) on the crushing arm of the coal mining machine are formed in the valve body (12), the fixing holes (24) are counter bores and are respectively arranged at four corners of the valve body (12), and oil ports are not formed in the upper surface and the lower surface of the valve body (12).
6. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 5, wherein the first oil port (1), the second oil port (2) and the third oil port (3) are located on the same side face of the valve body (12), the eighth oil port (8), the ninth oil port (9), the tenth oil port (10) and the eleventh oil port (11) are located on the side face, opposite to the side face where the first oil port (1) is located, of the valve body (12), and the first oil port (1), the eighth oil port (8), the second oil port (2), the eleventh oil port (11) and the third oil port (3) and the tenth oil port (10) are coaxially arranged and communicated with each other respectively.
7. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 6, wherein the four-number oil port (4) and the seven-number oil port (7) are located on the side surface, adjacent to the second-number oil port (2), of the valve body (12), the five-number oil port (5) and the six-number oil port (6) are located on the side surface, adjacent to the third-number oil port (3), of the valve body (12), and the four-number oil port (4) and the five-number oil port (5) are coaxially arranged and are not communicated.
8. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 7, wherein the center line of the seven oil port (7) is perpendicular to the center line of the second oil port (2) and located on the same plane, the center line of the six oil port (6) is perpendicular to the center line of the third oil port (3) and located on the same plane, and the center line of the four oil port (4) is perpendicular to the center line of the ninth oil port (9) and located on the same plane.
9. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 8, wherein the valve body (12) is further provided with a plurality of fabrication holes (23) communicated among the auxiliary oil ports, plugs for sealing and preventing oil leakage are installed in the fabrication holes (23), and the fabrication holes (23) are not formed in the upper surface of the valve body (12).
10. The hydraulic valve block for the hydraulic system of the crushing arm of the coal mining machine as claimed in claim 9, wherein the four-oil port (4) to the eleven-oil port (11) are all screw ports, and annular mounting surfaces are arranged at openings of the screw ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921165934.5U CN211009333U (en) | 2019-07-23 | 2019-07-23 | Hydraulic valve block for hydraulic system of crushing arm of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921165934.5U CN211009333U (en) | 2019-07-23 | 2019-07-23 | Hydraulic valve block for hydraulic system of crushing arm of coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009333U true CN211009333U (en) | 2020-07-14 |
Family
ID=71478212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921165934.5U Active CN211009333U (en) | 2019-07-23 | 2019-07-23 | Hydraulic valve block for hydraulic system of crushing arm of coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009333U (en) |
-
2019
- 2019-07-23 CN CN201921165934.5U patent/CN211009333U/en active Active
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