CN210153016U - Omnibearing drilling machine multi-way reversing valve - Google Patents
Omnibearing drilling machine multi-way reversing valve Download PDFInfo
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- CN210153016U CN210153016U CN201920973804.8U CN201920973804U CN210153016U CN 210153016 U CN210153016 U CN 210153016U CN 201920973804 U CN201920973804 U CN 201920973804U CN 210153016 U CN210153016 U CN 210153016U
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Abstract
The utility model discloses an all-round rig multichannel switching-over valve, include from the right side to left oil feed valve block, rotatory valve block, little pump oil feed valve block, propulsion valve block, the function conversion valve block that communicates in proper order, still include external check valve, stop valve, external oil circuit. The first control oil port is communicated with the third control oil port through an external oil way, an external one-way valve and a stop valve are arranged on the external oil way, and the external one-way valve is positioned between the stop valve and the first control oil port. The forward rotation oil port is communicated with the first control oil port through an internal oil duct. The utility model discloses in, except normally advancing drilling, the holder need be opened, under all the other actions, when perpendicular, the incline direction punches very much, the holder is in clamping state all the time, so just can avoid the drilling rod because the dead weight drops the incident that causes. And simultaneously, the utility model discloses in when playing the drilling rod, can realize playing the drilling rod fast and normally playing switching over wantonly between the drilling rod, work efficiency can improve greatly.
Description
Technical Field
The utility model relates to a multichannel switching-over valve class, especially an all-round rig multichannel switching-over valve field.
Background
The reversing valve is a valve which changes the on-off relationship of an oil duct connected to a valve body by means of the relative movement between a valve core and the valve body. The multi-way reversing valve is a combined valve with more than two reversing valves as main bodies. The application of the multi-way reversing valve in the current industrial production is wider and wider, and the requirement on different types of multi-way reversing valves is also larger and larger.
At present, the existing multi-way reversing valve of the omnibearing drilling machine has the following problems:
firstly, the problem that a drill rod slides down easily occurs during drilling, and safety accidents are easily caused;
when the drill rod is lifted, the quick drill rod lifting and the normal drill rod lifting cannot be switched at will, so that the working efficiency is low;
and thirdly, the structure is complex, external oil paths are more (except for a working oil port), external hydraulic elements are more, and the handle is more, so that the operation is complex.
Disclosure of Invention
The utility model discloses an in order to solve prior art's above-mentioned defect, and the multichannel change-over valve of all-round rig that provides.
The technical scheme is as follows:
the multi-way reversing valve of the omnibearing drilling machine comprises an oil inlet valve plate, a rotary valve plate, a small pump oil inlet valve plate, a propulsion valve plate and a function conversion valve plate which are sequentially communicated from right to left, and further comprises an external one-way valve, a stop valve and an external oil way. The oil inlet valve plate comprises a first safety valve, the oil inlet valve plate is provided with an oil inlet and a first oil return opening, and the first safety valve is connected between the oil inlet and the first oil return opening; the rotary valve plate is provided with a forward oil port and a reverse oil port;
the small pump oil inlet valve plate comprises a shuttle valve, a sequence valve and a second safety valve, the shuttle valve is arranged at the upper end of the small pump oil inlet valve plate, the sequence valve is arranged on the lower side surface of the small pump oil inlet valve plate, the second safety valve is arranged on the front surface of the small pump oil inlet valve plate, and a small pump oil inlet is also formed in the small pump oil inlet valve plate;
the propulsion valve plate comprises a hydraulic control one-way valve, the hydraulic control one-way valve is arranged in the propulsion valve plate, and the propulsion valve plate is provided with a propulsion oil cylinder large cavity oil port and a propulsion oil cylinder small cavity oil port; the rotary valve plate, the small pump oil inlet valve plate and the propelling valve plate are all internally provided with a working oil inlet and a working oil return port;
the function switching valve plate comprises a manual reversing valve and a hydraulic control reversing valve, and the manual reversing valve and the hydraulic control reversing valve are both arranged on the function switching valve plate; a first control oil port and a second control oil port are formed in the hydraulic control reversing valve; the functional conversion valve piece is also provided with a chuck oil port, a clamp clamping oil port, a clamp loosening oil port and a second oil return port;
the propulsion valve plate is further provided with a third control oil port, the first control oil port is communicated with the third control oil port through an external oil way, an external check valve and a stop valve are arranged on the external oil way, and the external check valve is located between the stop valve and the first control oil port.
Preferably, the forward rotation oil port is communicated with the first control oil port through an internal oil passage.
Preferably, the large cavity oil port of the propulsion oil cylinder and the small cavity oil port of the propulsion oil cylinder are respectively communicated with a hydraulic control one-way valve through an internal oil duct, the hydraulic control one-way valve is communicated with the manual reversing valve through the internal oil duct, and the manual reversing valve is communicated with the second control oil port through the internal oil duct.
Preferably, the oil inlet and the oil inlet of the small pump are respectively communicated with the shuttle valve through internal oil ducts, and the shuttle valve is communicated with the hydraulic control reversing valve through the internal oil ducts.
Preferably, the chuck oil port, the holder loosening oil port and the holder clamping oil port are respectively communicated with the hydraulic control reversing valve through internal oil ducts.
Preferably, the manual reversing valve is further communicated with the propulsion valve plate through an internal oil channel.
Preferably, the working oil inlet inside the rotary valve plate, the small pump oil inlet valve plate and the propulsion valve plate is communicated with the oil inlet through an internal oil duct, and the working oil return port inside the rotary valve plate, the small pump oil inlet valve plate and the propulsion valve plate is communicated with the first oil return port through an internal oil duct.
Preferably, an auxiliary working oil inlet is further formed in the oil inlet valve plate of the small pump, and the sequence valve is connected between the oil inlet of the small pump and the auxiliary working oil inlet; the second safety valve is connected between a working oil inlet of the oil inlet valve plate of the small pump and a working oil return opening of the oil inlet valve plate of the small pump.
Preferably, the manual reversing valve is a three-position two-way manual reversing valve.
Preferably, the function conversion valve plate further comprises a chuck, the chuck oil port is connected with the oil inlet cavity of the chuck, and the chuck is a normally open chuck.
Preferably, the function conversion valve plate further comprises a clamper, wherein a clamping oil port of the clamper is connected with a clamping cavity oil port of the clamper, a unclamping oil port of the clamper is connected with an unclamping cavity oil port of the clamper, and the clamper is specifically a normally closed clamper.
Has the advantages that:
the utility model discloses in, under the initial condition, after all-round rig circular telegram, no matter what position the hand-operated directional control valve is in, the holder is in clamping state all the time, and the chuck is in the chucking state, has just so avoided opening the incident that causes the drilling rod landing because of the holder when follow-up function conversion. When the omnibearing drilling machine works normally and the thrust oil cylinder of the omnibearing drilling machine retreats, the clamping device can be ensured to be in a clamping state, and the chuck is in a loosening state; when the function conversion is needed in the drilling process, the clamp holder and the chuck are always in a clamping state. Therefore, the clamp is always in a clamping state under other actions except that the clamp is required to be opened when the drilling hole is normally pushed forwards and drilled, particularly when the drilling hole is drilled in the vertical and inclined directions, so that safety accidents caused by falling of the drill rod due to dead weight can be avoided. When playing the drilling rod, the utility model discloses can realize playing the drilling rod fast and normally playing switching over wantonly between the drilling rod, just so improved work efficiency. And simultaneously, the utility model has the advantages of simple structure, the integrated level is high, and is easy and simple to handle, and work efficiency is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
(the same parts in the drawings are labeled in the same manner)
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the oil circuit of the present invention.
Wherein, 1, an oil inlet valve plate, 1-1, an oil inlet, 1-2, a first oil return port, 1-3, a first safety valve, 2, a rotary valve plate, 2-1, a forward oil port, 2-2, a reverse oil port, 3, a small pump oil inlet valve plate, 3-1, a shuttle valve, 3-2, a sequence valve, 3-3, a second safety valve, 3-4, a small pump oil inlet, 4, a push valve plate, 4-1, a push oil cylinder large cavity oil port, 4-2, a push oil cylinder small cavity oil port, 4-3, a third control oil port, 4-4, a hydraulic control one-way valve, 5, a function conversion valve plate, 5-1, a chuck oil port, 5-2, a clamp release oil port, 5-3, a clamp clamping oil port, 5-4, a second oil return port, 5-5, a first control oil port, 5-6 parts of a second control oil port, 5-7 parts of a manual reversing valve, 5-8 parts of a hydraulic control reversing valve, 5-9 parts of a clamp, 5-10 parts of a chuck, 6 parts of an external oil way, 6-1 parts of an external one-way valve, 6-2 parts of a stop valve, 7 parts of a working oil inlet, 7-1 parts of an auxiliary working oil inlet and 8 parts of a working oil return port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in FIGS. 1-2, an all-round rig multiple directional control valve, include from right to left oil feed valve block 1, rotary valve block 2, little pump oil feed valve block 3, propulsion valve block 4, function conversion valve block 5 that communicate in proper order, still include external check valve 6-1, stop valve 6-2, external oil circuit 6.
In each embodiment, preferably, the oil inlet valve plate 1 includes a first safety valve 1-3, the oil inlet valve plate 1 is provided with an oil inlet 1-1 and a first oil return port 1-2, and the first safety valve 1-3 is connected between the oil inlet 1-1 and the first oil return port 1-2. The oil inlet 1-1 is used for being connected with an oil outlet of a large pump of the omnibearing drilling machine, and the first oil return port 1-2 is used for being connected with a system oil return box of the omnibearing drilling machine.
In each embodiment, preferably, the rotary valve plate 2 is provided with a forward oil port 2-1 and a reverse oil port 2-2, the forward oil port 2-1 is used for being connected with a forward oil port of a rotary motor of the omnibearing drilling machine, and the reverse oil port 2-2 is connected with a reverse oil port of the rotary motor of the omnibearing drilling machine, so as to control the forward rotation and the reverse rotation of the rotary motor of the omnibearing drilling machine.
In each embodiment, preferably, the small pump oil inlet valve plate 3 comprises a shuttle valve 3-1, a sequence valve 3-2 and a second safety valve 3-3, the shuttle valve 3-1 is arranged at the upper end of the small pump oil inlet valve plate 3, the sequence valve 3-2 is arranged at the lower side surface of the small pump oil inlet valve plate 3, the second safety valve 3-3 is arranged at the front surface of the small pump oil inlet valve plate 3, and a small pump oil inlet 3-4 is further formed in the small pump oil inlet valve plate 3. And the small pump oil inlet 3-4 is used for connecting a small pump oil outlet of the omnibearing drilling machine.
In each embodiment, preferably, the propulsion valve plate 4 comprises a hydraulic control one-way valve 4-4, the hydraulic control one-way valve 4-4 is arranged in the propulsion valve plate 4, and the propulsion valve plate 4 is provided with a propulsion cylinder large cavity oil port 4-1 and a propulsion cylinder small cavity oil port 4-2. The oil port 4-1 of the large cavity of the propulsion oil cylinder is used for connecting the large cavity of the propulsion oil cylinder of the omnibearing drilling machine, and the oil port 4-2 of the small cavity of the propulsion oil cylinder is used for connecting the small cavity of the propulsion oil cylinder of the omnibearing drilling machine, so that the propulsion oil cylinder of the omnibearing drilling machine is controlled to advance and retreat.
In each embodiment, preferably, the function conversion valve plate 5 includes a manual directional control valve 5-7 and a hydraulic directional control valve 5-8, and the manual directional control valve 5-7 and the hydraulic directional control valve 5-8 are both disposed on the function conversion valve plate 5; a first control oil port 5-5 and a second control oil port 5-6 are formed in the hydraulic control reversing valve 5-8; the function conversion valve plate 5 is further provided with a chuck oil port 5-1, a clamp clamping oil port 5-3, a clamp loosening oil port 5-2 and a second oil return port 5-4. The manual reversing valves 5-7 are three-position two-way manual reversing valves. And the second oil return port 5-4 is used for a system oil return box of the omnibearing drilling machine to release oil when the chuck 5-10 is loosened.
In each embodiment, preferably, the propulsion valve plate 4 is further provided with a third control oil port 4-3, the first control oil port 5-5 is communicated with the third control oil port 4-3 through an external oil path 6, the external oil path 6 is provided with an external check valve and a stop valve 6-2, and the external check valve is located between the stop valve 6-2 and the first control oil port 5-5. By operating the stop valve 6-2, the normal or rapid retreating of the propulsion oil cylinder of the omnibearing drilling machine can be rapidly realized.
In each embodiment, preferably, the forward rotation oil port 2-1 is communicated with the first control oil port 5-5 through an internal oil passage; the large cavity oil port 4-1 of the propulsion oil cylinder and the small cavity oil port 4-2 of the propulsion oil cylinder are respectively communicated with a hydraulic control one-way valve 4-4 through an internal oil duct, the hydraulic control one-way valve 4-4 is communicated with a manual reversing valve 5-7 through the internal oil duct, and the manual reversing valve 5-7 is communicated with a second control oil port 5-6 through the internal oil duct; the oil inlet 1-1 and the small pump oil inlet 3-4 are respectively communicated with the shuttle valve 3-1 through an internal oil duct, and the shuttle valve 3-1 is communicated with the hydraulic control reversing valve 5-8 through the internal oil duct; the manual reversing valves 5 to 7 are also communicated with the propulsion valve plate 4 through internal oil passages; the chuck oil port 5-1, the clamp releasing oil port 5-2 and the clamp clamping oil port 5-3 are respectively communicated with a hydraulic control reversing valve 5-8 through an internal oil duct, so that the clamp 5-9 is controlled to be clamped or released, and the chuck 5-10 is controlled to be clamped or released.
In each embodiment, preferably, the rotary valve plate 2, the small pump oil inlet valve plate 3 and the thrust valve plate 4 are all provided with a working oil inlet 7 and a working oil return port 8. The rotary valve plate 2, the small pump oil inlet valve plate 3 and the working oil inlet 7 in the propulsion valve plate 4 are communicated with the oil inlet 1-1 through internal oil ducts, and the rotary valve plate 2, the small pump oil inlet valve plate 3 and the working oil return port 8 in the propulsion valve plate 4 are communicated with the first oil return port 1-2 through internal oil ducts.
In each embodiment, preferably, an auxiliary working oil inlet 7-1 is further formed in the oil inlet valve plate 3 of the small pump, and the sequence valve 3-2 is connected between the oil inlet 3-4 of the small pump and the auxiliary working oil inlet 7-1; the second safety valve 3-3 is connected between a working oil inlet 7 of the small pump oil inlet valve plate 3 and a working oil return opening 8 of the small pump oil inlet valve plate 3.
In each embodiment, preferably, the function switching valve plate 5 further includes a chuck 5-10, the chuck oil port 5-1 is connected to an oil inlet cavity of the chuck 5-10, and the chuck 5-10 is specifically a normally open chuck 5-10.
In each embodiment, preferably, the function switching valve plate 5 further includes a gripper 5-9, the gripper clamping oil port 5-3 is connected to the clamping chamber oil port of the gripper 5-9, the gripper release oil port 5-2 is connected to the release chamber oil port of the gripper 5-9, and the gripper 5-9 is specifically a normally closed gripper 5-9.
In each embodiment, preferably, after the omnibearing drilling machine is powered on, the large pump and the small pump of the omnibearing drilling machine supply oil to the multichannel reversing valve of the omnibearing drilling machine, at the moment, the rotary valve plate 2 and the push valve plate 4 are positioned at the middle position, no matter where the manual reversing valve 5-7 is positioned, the clamp holders 5-9 are always in a clamping state, and the chuck 5-10 is in a clamping state. Therefore, the safety accident that the drill rod slides down due to the opening of the clamping devices 5 to 9 when the subsequent functions are converted is avoided.
In each embodiment, preferably, when the omnibearing drilling machine multi-way reversing valve is used for drilling in a front extension rod, the drilling process is kept still. Firstly, the rotary valve plate 2 controls a rotary motor of the omnibearing drilling machine to rotate forwards, the propulsion valve plate 4 controls a propulsion oil cylinder of the omnibearing drilling machine to propel forwards, a hydraulic control reversing valve 5-8 is pushed by pressure oil in a first control oil port 5-5, a clamp holder 5-9 and a chuck 5-10 are loosened to clamp a drill rod, and drilling is realized; then, the push valve plate 4 controls the push oil cylinder of the omnibearing drilling machine to retreat and a drill rod is loaded, at the moment, the gripper 5-9 clamps the drill rod, the chuck 5-10 clamps the drill rod tightly, the rotary valve plate 2 controls the rotary motor of the omnibearing drilling machine to rotate forwards, and the push valve plate 4 controls the push oil cylinder of the omnibearing drilling machine to push forwards and drill circularly. Before the rear drill rod is not connected with the front drill rod, the clamping devices 5-9 are always in a clamping state, so that the drill rods cannot automatically fall off when holes are drilled in the vertical and inclined directions.
In various embodiments, it is preferable that the drilling process is kept still when the omnidirectional drilling machine multi-way reversing valve is in the post-extension drilling position. Firstly, the rotary valve plate 2 controls a rotary motor of the omnibearing drilling machine not to act, the push valve plate 4 controls a push oil cylinder of the omnibearing drilling machine to retreat to the bottom, at the moment, a clamp holder 5-9 clamps, and a chuck 5-10 loosens an upper drill rod; then, the rotary valve plate 2 controls a rotary motor of the omnibearing drilling machine to rotate forwards, the propulsion valve plate 4 controls a propulsion oil cylinder of the omnibearing drilling machine to propel forwards, the hydraulic control reversing valve 5-8 is pushed through pressure oil in the second control oil port 5-6, the clamp holder 5-9 and the chuck 5-10 are loosened to clamp a drill rod, and drilling is achieved; and finally, the push valve plate 4 controls the push oil cylinder of the omnibearing drilling machine to retreat to the bottom, the clamper 5-9 clamps, the chuck 5-10 loosens the upper drill rod, and drilling is performed circularly. Before the rear drill rod is not connected with the front drill rod, the clamping devices 5-9 are always in a clamping state, so that the drill rods cannot automatically fall off when holes are drilled in the vertical and inclined directions.
In each embodiment, preferably, when the multi-way reversing valve of the all-directional drilling machine is in a drill pipe pulling position, the drill pipe pulling process is kept still, and the stop valve 6-2 is in an open state. Firstly, a chuck 5-10 clamps a drill rod, a clamper 5-9 clamps the drill rod, a rotary valve plate 2 controls a rotary motor of an omnibearing drill to rotate reversely and loosen, a propulsion valve plate 4 controls a propulsion oil cylinder of the omnibearing drill to retreat, and at the moment, the chuck 5-10 clamps the drill rod, the clamper 5-9 loosens, and the drill rod is pulled out; then, the propulsion valve plate 4 controls the propulsion oil cylinder of the omnibearing drilling machine to propel forwards, the hydraulic control reversing valve 5-8 is pushed through pressure oil in the second control oil port 5-6, the clamp 5-9 clamps, the chuck 5-10 loosens, the propulsion valve plate 4 is located at the middle position at the moment, the rotary valve plate 2 controls the rotary motor of the omnibearing drilling machine to rotate reversely, the clamp 5-9 clamps, the chuck 5-10 loosens, the drill pipe is pulled out, and the drill pipe is pulled out circularly, so that the drill pipe is pulled out quickly. When the drill rod is tightly clamped, the rotary valve plate 2 can be operated to control the rotary motor of the omnibearing drill to rotate forwards, the push valve plate 4 is operated to control the push oil cylinder of the omnibearing drill to pull backwards, and the drill rod is pulled out while rotating, so that the drill rod can be quickly pulled out and normally pulled out, the switching is carried out at any time, and the working efficiency is improved. When the drill rod is not pulled backwards, the holders 5 to 9 are always in a clamping state, so that the drill rod cannot automatically fall off when the drill rod is taken after the drill rod is drilled in the vertical and inclined directions.
Of course, all features disclosed in this specification may be combined in any manner, except features that are mutually exclusive.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an all-round rig multichannel reversing valve, includes from the right side to left oil feed valve block, rotatory valve block, little pump oil feed valve block, propulsion valve block, the function conversion valve block that communicates in proper order, still includes external check valve, stop valve, external oil circuit, its characterized in that: the oil inlet valve plate comprises a first safety valve, the oil inlet valve plate is provided with an oil inlet and a first oil return opening, and the first safety valve is connected between the oil inlet and the first oil return opening; the rotary valve plate is provided with a forward oil port and a reverse oil port;
the small pump oil inlet valve plate comprises a shuttle valve, a sequence valve and a second safety valve, the shuttle valve is arranged at the upper end of the small pump oil inlet valve plate, the sequence valve is arranged on the lower side surface of the small pump oil inlet valve plate, the second safety valve is arranged on the front surface of the small pump oil inlet valve plate, and a small pump oil inlet is also formed in the small pump oil inlet valve plate;
the propulsion valve plate comprises a hydraulic control one-way valve, the hydraulic control one-way valve is arranged in the propulsion valve plate, and the propulsion valve plate is provided with a propulsion oil cylinder large cavity oil port and a propulsion oil cylinder small cavity oil port; the rotary valve plate, the small pump oil inlet valve plate and the propelling valve plate are all internally provided with a working oil inlet and a working oil return port;
the function switching valve plate comprises a manual reversing valve and a hydraulic control reversing valve, and the manual reversing valve and the hydraulic control reversing valve are both arranged on the function switching valve plate; a first control oil port and a second control oil port are formed in the hydraulic control reversing valve; the functional conversion valve piece is also provided with a chuck oil port, a clamp clamping oil port, a clamp loosening oil port and a second oil return port;
the propulsion valve plate is further provided with a third control oil port, the first control oil port is communicated with the third control oil port through an external oil way, an external check valve and a stop valve are arranged on the external oil way, and the external check valve is located between the stop valve and the first control oil port.
2. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the forward rotation oil port is communicated with the first control oil port through an internal oil duct.
3. The omni directional drilling rig multi-directional control valve of claim 1, wherein: and the large cavity oil port of the propulsion oil cylinder and the small cavity oil port of the propulsion oil cylinder are respectively communicated with the hydraulic control one-way valve through an internal oil duct.
4. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the oil inlet and the oil inlet of the small pump are respectively communicated with the shuttle valve through internal oil ducts, and the shuttle valve is communicated with the hydraulic control reversing valve through the internal oil ducts.
5. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the chuck oil port, the clamp loosening oil port and the clamp clamping oil port are respectively communicated with the hydraulic control reversing valve through internal oil ducts.
6. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the rotary valve plate, the small pump oil inlet valve plate and the working oil inlet in the propulsion valve plate are communicated with the oil inlet through an internal oil duct, and the rotary valve plate, the small pump oil inlet valve plate and the working oil return port in the propulsion valve plate are communicated with the first oil return port through an internal oil duct.
7. The omni directional drilling rig multi-directional control valve of claim 1, wherein: an auxiliary working oil inlet is further formed in the oil inlet valve plate of the small pump, and the sequence valve is connected between the oil inlet of the small pump and the auxiliary working oil inlet; the second safety valve is connected between a working oil inlet of the oil inlet valve plate of the small pump and a working oil return opening of the oil inlet valve plate of the small pump.
8. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the manual reversing valve is a three-position two-way manual reversing valve.
9. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the function conversion valve plate further comprises a chuck, the chuck oil port is connected with an oil inlet cavity of the chuck, and the chuck is a normally open chuck.
10. The omni directional drilling rig multi-directional control valve of claim 1, wherein: the function conversion valve plate further comprises a clamp holder, a clamping oil port of the clamp holder is connected with a clamping cavity oil port of the clamp holder, a loosening oil port of the clamp holder is connected with a loosening cavity oil port of the clamp holder, and the clamp holder is a normally closed clamp holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920973804.8U CN210153016U (en) | 2019-06-26 | 2019-06-26 | Omnibearing drilling machine multi-way reversing valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920973804.8U CN210153016U (en) | 2019-06-26 | 2019-06-26 | Omnibearing drilling machine multi-way reversing valve |
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| CN210153016U true CN210153016U (en) | 2020-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847295A (en) * | 2021-10-18 | 2021-12-28 | 中煤科工集团重庆研究院有限公司 | Hydraulic control system and control method for coal mine linkage drilling machine |
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2019
- 2019-06-26 CN CN201920973804.8U patent/CN210153016U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847295A (en) * | 2021-10-18 | 2021-12-28 | 中煤科工集团重庆研究院有限公司 | Hydraulic control system and control method for coal mine linkage drilling machine |
| CN113847295B (en) * | 2021-10-18 | 2023-11-10 | 中煤科工集团重庆研究院有限公司 | Hydraulic control system and control method for coal mine linkage drilling machine |
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