CN107339116A - The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting - Google Patents
The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting Download PDFInfo
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- CN107339116A CN107339116A CN201710692473.6A CN201710692473A CN107339116A CN 107339116 A CN107339116 A CN 107339116A CN 201710692473 A CN201710692473 A CN 201710692473A CN 107339116 A CN107339116 A CN 107339116A
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- actuator port
- valve
- column
- hand
- operated direction
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The present invention discloses a kind of quick setting prop hydraulic system of coal mine hydraulic supporting, hand-operated direction valve, the first column and the second column including forming loop, three actuator ports are provided with hand-operated direction valve simultaneously, first actuator port connects with the rodless cavity of the first column, second actuator port connects with the rodless cavity of the second column, and the 3rd actuator port connects with the rod chamber of the first column and the second column simultaneously；When hand-operated direction valve works in the first station, its oil inlet turns on its first actuator port and the second actuator port simultaneously, and its oil return opening turns on its 3rd actuator port；When it works in second station, its oil inlet turns on its 3rd actuator port, and its oil return opening turns on its first actuator port and the second actuator port simultaneously.The present invention disclosure satisfy that the hydraulic support of high workload resistance, large-diameter column to setting prop pressure and the demand of setting prop time, while reduce production cost.Invention additionally discloses a kind of hand-operated direction valve, its advantage are as described above.
Description
Technical field
The present invention relates to coal mining and technical field of hydraulic pressure, the quick setting prop liquid of more particularly to a kind of coal mine hydraulic supporting
Pressure system.The invention further relates to a kind of hand-operated direction valve.
Background technology
With the development of Chinese exploration engineering, Coal Mining Technology is gradually ripe.
In mechanical coal mining operation, most of exploitation task is completed usually using coal-winning machine.The species of coal-winning machine is a lot,
By taking high working face coal winning machine as an example, the maximum mining height height of domestic high working face coal winning machine is up to 7m.
Hydraulic support is the important composition part of coal-winning machine, is stretched out by the support column of hydraulic support, rib is propped up.Mesh
In preceding hydraulic support manual control system, manipulate valve and typically use two position four-way valves or three-position four-way valve, this two kinds commutations
Valve an only supply opening, is only capable of making a root post of hydraulic support to stretch out, but hydraulic support is typically set simultaneously in operation
There are two root posts, therefore, in the prior art, two reversal valves are often reconnected after the supply opening of valve is manipulated or by pipeline
It is divided into the two-way of parallel connection, so after transformation, the pressure of the pressure oil entered in two columns of hydraulic pressure, only original one
Half, for the hydraulic support of the small cylinder diameter column in part, the requirement of working face setting prop time can be met reluctantly, but for high workload
Resistance, the hydraulic support of large-diameter column can not then meet to require.Meanwhile in the prior art, section hydraulic support is using electro-hydraulic
Control system, realized by electro-hydraulic control electromagnetic priority valve and feed flow is distinguished to two columns of hydraulic support, but electro-hydraulic control is
Unite complicated, while be related to hydraulic component and electric components, cost is too high.
Therefore, how to meet the hydraulic support of high workload resistance, large-diameter column to setting prop pressure and the need of setting prop time
Ask, while reduce production cost, be those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of quick setting prop hydraulic system of coal mine hydraulic supporting, disclosure satisfy that high workload hinders
Power, the hydraulic support of large-diameter column reduce production cost to setting prop pressure and the demand of setting prop time.The present invention's is another
One purpose is to provide a kind of hand-operated direction valve.
In order to solve the above technical problems, the present invention provides a kind of quick setting prop hydraulic system of coal mine hydraulic supporting, including
Hand-operated direction valve, for stretch out support ore body the first column and the second column, and first column, the second column and manually
Reversal valve forms loop；
Three actuator ports are provided with the hand-operated direction valve simultaneously, and wherein the first actuator port is stood with described first
The rodless cavity connection of post, the second actuator port connects with the rodless cavity of second column, the 3rd actuator port and meanwhile with it is described
The rod chamber of first column and the second column connects；
When the hand-operated direction valve works in the first station, its oil inlet simultaneously with its first actuator port and the second work
Make hydraulic fluid port conducting, its oil return opening turns on its 3rd actuator port；
When the hand-operated direction valve works in second station, its oil inlet turns on its 3rd actuator port, its oil return
Mouth turns on its first actuator port and the second actuator port simultaneously.
Preferably, when the hand-operated direction valve works in 3rd station, its three actuator ports are led with its oil return opening
It is logical.
Preferably, in addition to double linked one-way valve group, and the oil inlet of its first check valve connects with fuel tank, and ends hydraulic fluid port
Connected with the rodless cavity of first column or the second column；The of the oil inlet of its second check valve and the hand-operated direction valve
Three actuator ports connect, and the cut-off hydraulic fluid port for ending hydraulic fluid port with first check valve connects.
Preferably, the oil inlet of the second check valve in the double linked one-way valve group simultaneously with the hand-operated direction valve the
One actuator port or the connection of the second actuator port.
The present invention also provides a kind of hand-operated direction valve, it is characterised in that including valve body, side by side and is slidably disposed in institute
State the first valve element in valve body and the second valve element, the oil inlet being arranged on the valve body, oil return opening, the first actuator port,
Two actuator ports and the 3rd actuator port, and the operation handle being rotatablely arranged on the valve body；The operation handle
When pulling to the first extreme position, first valve element slides into predeterminated position and makes the oil inlet while connect described first
Actuator port and the second actuator port；When the operation handle is pulled to the second extreme position, second valve element slides into pre-
If position simultaneously makes the oil inlet be connected with the 3rd actuator port；When first valve element and the second valve element do not slide, institute
The first actuator port, the second actuator port and the 3rd actuator port is stated to connect with the oil return opening.
Preferably, in addition to the bale handle that is rotatablely arranged on the valve body, the bale handle and the behaviour
It is connected as handle, and is provided with the both ends of the bale handle for turning to the first extreme position or second limit at it
The compressed part of the first valve element or the second valve element movement is promoted during position.
Preferably, in addition to the depression bar that is rotatablely arranged on the valve body, the end surface of the depression bar with it is described
The compressed part at bale handle both ends is abutted, and the end face of the depression bar and the top of first valve element and the second valve element are supported
Connect.
Preferably, the top of first valve element is connected with the combination push rod in T fonts, and the transverse direction of the combination push rod
First actuator port and the second actuator port are blocked in both ends respectively；The top of second valve element is connected with the list in strip
Hole push rod, and the 3rd actuator port is blocked in the end of the single hole push rod.
Preferably, the bottom of first valve element and the second valve element is provided with spring flexible along its length.
The quick setting prop hydraulic system of coal mine hydraulic supporting provided by the present invention, mainly stood including the first column, second
Post and hand-operated direction valve, the three form hydraulic circuit.Wherein, the first column and the second column are to be set on same hydraulic support
The two root posts put, for reaching pre-determined distance rear support ore body.Three working oils are provided with hand-operated direction valve simultaneously
Mouthful, certainly, while oil inlet and oil-out are additionally provided with, so visible, the hand-operated direction valve is specially two position-5 way valves
Or 3 position-5 way valve.Three actuator ports of hand-operated direction valve, wherein the rodless cavity of the first actuator port and the first column
Connection, when the first actuator port oil-feed, the first column can be promoted to stretch out；The rodless cavity of second actuator port and the second column connects
It is logical, similarly, when the second actuator port oil-feed, the second column can be promoted to stretch out；3rd actuator port simultaneously with the first column and
The rod chamber connection of second column, when the 3rd actuator port oil-feed, the first column and the second column can be promoted to retract.Change manually
There are at least two stations to valve, when hand-operated direction valve is in the first station, its oil inlet simultaneously with the first actuator port and
Second actuator port is turned on, and then the first column and the second column are stretched out, while its oil return opening turns on the 3rd actuator port,
Carry out oil return；And when hand-operated direction valve is in second station, its oil inlet is turned on the 3rd actuator port, and then first is stood
Post and the second column are retracted, while its oil return opening turns on the first actuator port and the second actuator port simultaneously, carry out oil return.Such as
This, due to being provided with three actuator ports simultaneously on hand-operated direction valve, and the first actuator port and the second actuator port are the
Rodless cavity during one station respectively with the first column and the second column connects, and therefore, after pressure oil flows out from pump, reaches manual
During reversal valve, the pressure that can maintain like while it is divided into two strands of oil, has respectively entered the first actuator port and the second working oil
Mouthful, make the first column and the second column while stretch out, compared to prior art, without in pressure oil by actuator port after it is right again
Oil pressure is divided equally, while without the reversal valve for setting up parallel pipeline or series shunt, ensure that high workload resistance, large-diameter
The first column and the second column of column reduce production cost to setting prop pressure and the demand of setting prop time.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the hydraulic schematic diagram of hydraulic system in a kind of embodiment provided by the present invention；
Fig. 2 is a kind of hydraulic schematic diagram of the hand-operated direction valve shown in Fig. 1；
Fig. 3 is the structure sectional view of hand-operated direction valve in a kind of embodiment provided by the present invention；
Fig. 4 is Fig. 1 birds-eye perspective.
Wherein, in Fig. 1-Fig. 4：
First column -1, the second column -2, hand-operated direction valve -3, valve body -301, the first valve element -302, the second valve
Core -303, oil inlet -304, oil return opening -305, the first actuator port -306, the second actuator port -307, the three work
Hydraulic fluid port -308, operation handle -309, bale handle -310, compressed part -3101, depression bar -311, push rod -312 are combined, it is single
Hole push rod -313, spring -314, double linked one-way valve group -4.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is the hydraulic schematic diagram of hydraulic system in a kind of embodiment provided by the present invention.
In a kind of embodiment provided by the present invention, the quick setting prop hydraulic system of coal mine hydraulic supporting is main
Including the first column 1, the second column 2 and hand-operated direction valve 3, the three forms hydraulic circuit, specifically, the first column 1 and the
Two columns 2 can be connected in parallel in hydraulic circuit.
Wherein, the first column 1 and the second column 2 are the two root posts set on same hydraulic support, for reaching
Pre-determined distance rear support ore body.
Three actuator ports (A1, A2 and B) are provided with simultaneously on hand-operated direction valve 3, as shown in Fig. 2 Fig. 2 is in Fig. 1
A kind of hydraulic schematic diagram of shown hand-operated direction valve.Certainly, it is additionally provided with oil inlet (P) simultaneously on hand-operated direction valve 3 and goes out
Hydraulic fluid port (T), so visible, the hand-operated direction valve 3 is specially two position-5 way valves or 3 position-5 way valve.For convenience of opinion
State, the present embodiment herein below illustrates so that hand-operated direction valve 3 is 3 position-5 way valve as an example.
Three actuator ports of hand-operated direction valve 3, wherein the first actuator port A1 connects with the rodless cavity of the first column 1,
When the first actuator port A1 oil-feeds, the first column 1 can be promoted to stretch out.Second actuator port A2 and the second column 2 rodless cavity
Connection, similarly, when the second actuator port A2 oil-feeds, can promote the second column 2 to stretch out.3rd actuator port B is simultaneously with first
Column 1 connects with the rod chamber of the second column 2, when the 3rd actuator port B oil-feeds, can promote the first column 1 and the second column 2
Retract.
Meanwhile when hand-operated direction valve 3 is in the first station (the left station in Fig. 2), its oil inlet P simultaneously with the first work
Make hydraulic fluid port A1 and the second actuator port A2 conductings, and then the first column 1 and the second column 2 are stretched out, while its oil return inlet T and the
Three actuator port B are turned on, and carry out oil return.And when hand-operated direction valve 3 is in second station (right working position in Fig. 2), its oil-feed
Mouthful P is turned on the 3rd actuator port B, and then the first column 1 and the second column 2 are retracted, while its oil return inlet T while with first
Actuator port A1 and the second actuator port A2 conductings, carry out oil return.
In this way, the quick setting prop hydraulic system that the present embodiment is provided, due to being provided with three simultaneously on hand-operated direction valve 3
Actuator port, and the first actuator port A1 and the second actuator port A2 in the first station respectively with the first column 1 and second
The rodless cavity connection of column 2, therefore, after pressure oil flow out from pump, during arrival hand-operated direction valve 3, the pressure that can maintain like
Power is divided into two strands of oil simultaneously, has respectively entered the first actuator port A1 and the second actuator port A2, makes the first column 1 and second vertical
Post 2 stretches out simultaneously, compared to prior art, without in pressure oil by actuator port after oil pressure is divided equally again, while
The reversal valve of parallel pipeline or series shunt need not be set up, ensure that high workload resistance, the first column 1 of large-diameter column and
Two columns 2 reduce production cost to setting prop pressure and the demand of setting prop time.
In general, hand-operated direction valve 3 also have 3rd station, that is, middle position.Specifically, changing manually in the present embodiment
To valve 3, its Median Function is " Y " type, i.e., when hand-operated direction valve 3 is in 3rd station, the cut-off of its oil inlet P, while its
Three actuator ports turn on oil return inlet T.It is arranged such, when the first column 1 and the second column 2 are reaching distance to a declared goal simultaneously
After jacking up rib, hand-operated direction valve 3 can be made to be in 3rd station, and then the first column 1 and the second column 2 is remained locked in and is worked as
Anteposition configuration state.
In addition, be the operating efficiency for further improving the first column 1 and the second column 2, quick setting prop is realized foregoing
On the basis of, double linked one-way valve group 4 is additionally arranged in the present embodiment, to realize the fast prompt drop post of the first column 1 and the second column 2.
Specifically, the double linked one-way valve group 4 includes two check valves arranged side by side, respectively the first check valve and second unidirectional
Valve, and when realizing duplex, i.e. the first check valve forward conduction the methods of the first check valve and the second check valve pass through hydraulic control,
Simultaneously by the second check valve forward conduction, vice versa.Wherein, the oil inlet of the first check valve connects with fuel tank, and first is single
Connected to the cut-off hydraulic fluid port of valve with the rodless cavity of the first column 1 or the second column 2.The oil inlet and manual reverse of direction of second check valve
The 3rd actuator port B connections of valve 3, and the cut-off hydraulic fluid port of the second check valve connects with the cut-off hydraulic fluid port of the first check valve.So
Set, when hand-operated direction valve 3 works in second station, its oil inlet P turns on the 3rd actuator port B, and then makes the second list
To valve forward conduction, while make the first check valve forward conduction, so that the rodless cavity of the first column 1 or the second column 2 leads to
Cross the first check valve directly to connect with fuel tank, and then enable pressure oil in the rodless cavity of the first column 1 or the second column 2 not
By the oil return inlet T of hand-operated direction valve 3, but flow directly back into fuel tank, shorten backflow oil circuit distance, it is quick so as to realize
The purpose of post drops.
Further, to avoid when hand-operated direction valve 3 is in the first station, the presence of double linked one-way valve group 4 influences pressure
The proper flow of power oil, in the present embodiment, by the oil inlet of the second check valve in double linked one-way valve group 4 simultaneously and manual reverse of direction
The first actuator port A1 or the second actuator port A2 connection of valve 3.
As shown in Figure 3 and Figure 4, Fig. 3 is the structure of hand-operated direction valve in a kind of embodiment provided by the present invention
Sectional view, Fig. 4 are Fig. 1 birds-eye perspective.
The present embodiment also provides a kind of hand-operated direction valve, specifically, the hand-operated direction valve mainly includes valve body 301, first
Valve element 302, the second valve element 303, oil inlet 304, oil return opening 305, the first actuator port 306, the second actuator port the 307, the 3rd
Actuator port 308 and operation handle 309.
Wherein, valve body 301 is the agent structure of hand-operated direction valve, is mainly used in installing and accommodates remaining parts.First
The valve element 303 of valve element 302 and second is disposed in parallel in valve body 301, and can individually be slided, to switch hand-operated direction valve
Operating position.
Oil inlet 304 and oil return opening 305 are arranged on valve body 301, in general, due to being provided with the first valve in valve body 301
The valve element 303 of core 302 and second, therefore oil inlet 304 and oil return opening 305 can be arranged on the first valve element 302 and the second valve element 303
Between side wall on, and under the non-working condition of the first valve element 302 and the second valve element 303 (not moving), the first valve element 302
Oil inlet 304 is blocked with the side wall of the second valve element 303, but turns on oil return opening 305.First actuator port 306 and the second work
Hydraulic fluid port 307 is arranged in the shift motion of the first valve element 302 in the corresponding side wall of valve body 301, and the 3rd actuator port 308 is set
In the shift motion of the second valve element 303 in the corresponding side wall of valve body 301.
Operation handle 309 is rotatably arranged on valve body 301, can be pulled lower rotation in human hand, in general, be worked as manipulator
When handle 309 is not pulled, in vertical state, now the first valve element 302 and the second valve element 303 do not move.And in manipulator
When handle 309 is pulled, there are two working conditions, correspond to an extreme position, i.e. the first extreme position and second limit respectively
Position, two extreme positions are symmetrical typically in rotation direction.When operation handle 309 is rotated (by turning clockwise for Fig. 3 standards
It is dynamic) to the first extreme position when, operation handle 309 drives the first valve element 302 to slide into predeterminated position, and makes oil inlet 304 same
When turn on the first actuator port 306 and the second actuator port 307.When operation handle 309 is rotated (by turning counterclockwise for Fig. 3 standards
It is dynamic) to the second extreme position when, operation handle 309 drives the second valve element 303 to slide into predeterminated position, and make oil inlet 304 with
3rd actuator port 308 turns on.
In this way, when pressure oil flows out from pump and reaches hand-operated direction valve, it is two bursts of pressure that can be punished in oil inlet 304
Equal pressure oil, and the first actuator port 306 and the second actuator port 307 are had respectively entered, or enter directly into the 3rd
Actuator port 308.
In addition, for the convenience of the user when moving operation handle 309, smoothly the first valve element 302 or the second valve element 303 is driven to exist
Moved in valve body 301, be additionally arranged bale handle 310 in the present embodiment on valve body 301.Specifically, the bale handle 310 can be
Rotate on valve body 301, and be connected with the end of operation handle 309, it is synchronous so as to when operation handle 309 rotates
Rotate.Compressed part 3101 is provided with (left and right) end positions of bale handle 310, the compressed part 3101 is respectively used to compress
The top of first valve element 302 and the second valve element 303, so that when operation handle 309 drives bale handle 310 to rotate, compressed part
3101 can promote the first valve element 302 or the second valve element 303 down to slide under the driving of pressure, and work as 309 turns of operation handle
When moving to the first extreme position or the second extreme position, compressed part 3101 promotes the first valve element 302 or the second valve element 303 simultaneously
Pre-determined distance is slided, reaches predeterminated position.
Further, to improve reliability when bale handle 310 drives the first valve element 302 or the second valve element 303, improve
Distance is driven, the present embodiment is additionally arranged depression bar 311 on valve body 301.Specifically, the depression bar 311 is rotatable cantilever beam knot
Structure.The specific set location of depression bar 311 can be located at the valve element 302 of bale handle 310 and first and the second valve element 303 top it
Between, and the end surface of depression bar 311 abuts with the compressed part 3101 that the both ends of bale handle 310 are set, while the end of depression bar 311
End bottom surface abuts with the top of the first valve element 302 and the second valve element 303.It is arranged such, when handle depression bar 311 rotates, it two
The compressed part 3101 at end compresses the end of depression bar 311, and then makes the top of the first valve element 302 of compression of depression bar 311 or the second valve element 303
End, in the compression rotation process of depression bar 311, that is, the first valve element 302 or the second valve element 303 is driven to be slided in valve body 301.
Moreover, it is contemplated that the first valve element 302 need to ensure that oil inlet 304 works with first simultaneously in moving process
The actuator port 307 of hydraulic fluid port 306 and second turns on, conversely, then needing to ensure while block the first actuator port 306 and the second working oil
Mouth 307.Therefore, combination push rod 312 is provided with the present embodiment on the top of the first valve element 302, specifically, the combination push rod
312, similar to T fonts, are provided with another straight-bar extended laterally, the straight-bar extended laterally by this at the top of a straight-bar
A straight-bar is reconnected, so that two straight-bars are synchronized with the movement, and are respectively used to block or unclamp and be symmetricly set in valve body 301
The first actuator port 306 and the second actuator port 307 on wall.Similarly, the present embodiment is provided with the top of the second valve element 303
Single hole push rod 313, because the second valve element 303 is in moving process, only it need to ensure that oil inlet 304 is led with the 3rd actuator port 308
It is logical, therefore need to be only the mesh that can be achieved to block or unclamp the 3rd actuator port 308 by the single hole push rod 313 in strip
's.
Furthermore, it is contemplated that the working condition of the first valve element 302 and the second valve element 303 is opposition, i.e., the first valve element 302 exists
When mobile, the second valve element 303 is necessarily in inactive state, and has one section of process, i.e., second between both state switchings
Valve element 303 gradually returns to the process of initial position from shift position.Therefore, for convenience of the first valve element 302 and the second valve element 303
Reset operation, the present embodiment is provided with spring 314 in the bottom of the first valve element 302 and the second valve element 303.Specifically, should
The telescopic direction of spring 314 is the moving direction of the first valve element 302 and the second valve element 303, is typically also the first valve element certainly
302 and second valve element 303 length direction.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. the quick setting prop hydraulic system of a kind of coal mine hydraulic supporting, it is characterised in that including hand-operated direction valve (3), for stretching
Go out to support the first column (1) and the second column (2) of ore body, and first column (1), the second column (2) and manual reverse of direction
Valve (3) forms loop；
Three actuator ports are provided with the hand-operated direction valve (3) simultaneously, and wherein the first actuator port is stood with described first
The rodless cavity connection of post (1), the second actuator port connect with the rodless cavity of second column (2), and the 3rd actuator port is simultaneously
Connected with the rod chamber of first column (1) and the second column (2)；
When the hand-operated direction valve (3) works in the first station, its oil inlet simultaneously with its first actuator port and the second work
Make hydraulic fluid port conducting, its oil return opening turns on its 3rd actuator port；
When the hand-operated direction valve (3) works in second station, its oil inlet turns on its 3rd actuator port, its oil return opening
Turned on simultaneously with its first actuator port and the second actuator port.
2. the quick setting prop hydraulic system of coal mine hydraulic supporting according to claim 1, it is characterised in that when described manual
When reversal valve (3) works in 3rd station, its three actuator ports turn on its oil return opening.
3. the quick setting prop hydraulic system of coal mine hydraulic supporting according to claim 2, it is characterised in that also including duplex
Unidirectional valve group (4), and the oil inlet of its first check valve connects with fuel tank, and end hydraulic fluid port and first column (1) or the
The rodless cavity connection of two columns (2)；3rd actuator port of the oil inlet of its second check valve and the hand-operated direction valve (3) connects
It is logical, and the cut-off hydraulic fluid port for ending hydraulic fluid port with first check valve connects.
4. the quick setting prop hydraulic system of coal mine hydraulic supporting according to claim 3, it is characterised in that the duplex list
The oil inlet of the second check valve into valve group (4) while the first actuator port or the second work with the hand-operated direction valve (3)
Make hydraulic fluid port connection.
5. a kind of hand-operated direction valve, it is characterised in that including valve body (301), side by side and be slidably disposed in the valve body
(301) the first valve element (302) and the second valve element (303) in, the oil inlet (304) being arranged on the valve body (301), oil return
Mouth (305), the first actuator port (306), the second actuator port (307) and the 3rd actuator port (308), and rotationally set
The operation handle (309) being placed on the valve body (301)；It is described when the operation handle (309) is pulled to the first extreme position
First valve element (302) slide into predeterminated position and make the oil inlet (304) at the same connect first actuator port (306) and
Second actuator port (307)；When the operation handle (309) is pulled to the second extreme position, second valve element (302) is slided
To predeterminated position and the oil inlet (304) is set to be connected with the 3rd actuator port (308)；First valve element (302) and
When second valve element (303) does not slide, first actuator port (306), the second actuator port (307) and the 3rd actuator port
(308) connected with the oil return opening (305).
6. hand-operated direction valve according to claim 5, it is characterised in that also include being rotatablely arranged at the valve body
(301) bale handle (310) on, the bale handle (310) are connected with the operation handle (309), and in the handle
The both ends of briquetting (310) are provided with for promoting described first when it turns to the first extreme position or the second extreme position
Valve element (302) or the compressed part (3101) of the second valve element (303) movement.
7. hand-operated direction valve according to claim 6, it is characterised in that also include being rotatablely arranged at the valve body
(301) depression bar (311) on, the end surface of the depression bar (311) and the compressed part at the bale handle (310) both ends
(3101) abut, and the end face of the depression bar (311) and first valve element (302) and the top of the second valve element (303)
Abut.
8. hand-operated direction valve according to claim 7, it is characterised in that the top of first valve element (302) is connected with
First actuator port is blocked respectively in the transverse ends of the combination push rod (312) of T fonts, and the combination push rod (312)
And the second actuator port (307) (306)；The top of second valve element (303) is connected with the single hole push rod (313) in strip,
And the 3rd actuator port (308) is blocked in the end of the single hole push rod (313).
9. hand-operated direction valve according to claim 8, it is characterised in that first valve element (302) and the second valve element
(303) bottom is provided with spring (314) flexible along its length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710692473.6A CN107339116B (en) | 2017-08-14 | 2017-08-14 | Quick lifting column hydraulic system of coal mine hydraulic support and manual reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710692473.6A CN107339116B (en) | 2017-08-14 | 2017-08-14 | Quick lifting column hydraulic system of coal mine hydraulic support and manual reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339116A true CN107339116A (en) | 2017-11-10 |
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| CN107339116B (en) | 2023-08-01 |
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