CN207332914U - 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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- CN207332914U CN207332914U CN201721017258.8U CN201721017258U CN207332914U CN 207332914 U CN207332914 U CN 207332914U CN 201721017258 U CN201721017258 U CN 201721017258U CN 207332914 U CN207332914 U CN 207332914U
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Abstract
The utility model discloses a kind of quick setting prop hydraulic system of coal mine hydraulic supporting, hand-operated direction valve including forming circuit, the first column and the second column, three actuator ports are provided with hand-operated direction valve at the same time, first actuator port is connected with the rodless cavity of the first column, second actuator port is connected with the rodless cavity of the second column, and the 3rd actuator port is connected with the rod chamber of the first column and the second column at the same time；When hand-operated direction valve works in the first station, its oil inlet is turned on its first actuator port and the second actuator port at the same time, its oil return opening is turned on its 3rd actuator port；When it works in second station, its oil inlet is turned on its 3rd actuator port, its oil return opening is turned on its first actuator port and the second actuator port at the same time.So meet that the hydraulic support of high workload resistance, large-diameter column to the demand of setting prop pressure and setting prop time, reduces production cost.A kind of hand-operated direction valve is also disclosed in the utility model, and its advantage is as described above.
Description
Technical field
It the utility model is related to coal mining and technical field of hydraulic pressure, the quick liter of more particularly to a kind of coal mine hydraulic supporting
Column hydraulic system.The utility model 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 coalcutter.The species of coalcutter is very much,
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 component of coalcutter, is stretched out by the support column of hydraulic support, coal wall is propped up.Mesh
In preceding hydraulic support manual control system, manipulate valve and generally use two position four-way valves or three-position four-way valve, this two kinds commutations
For valve in operation, an only supply opening, is only capable of making a root post of hydraulic support to stretch out, but hydraulic support is generally set at the same time
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, enters the pressure of the pressure oil in two columns of hydraulic pressure, be only original one
Half, for the hydraulic support of the small cylinder diameter column in part, it can meet the requirement of working face setting prop time reluctantly, but for high workload
Resistance, the hydraulic support of large-diameter column can not then be met the requirements.Meanwhile in the prior art, section hydraulic stent is using electro-hydraulic
Control system, is realized by electro-hydraulic control electromagnetic priority valve and distinguishes feed flow 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 the need of setting prop pressure and setting prop time
Ask, while reduce production cost, be those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of quick setting prop hydraulic system of coal mine hydraulic supporting, disclosure satisfy that senior engineer
Make the hydraulic support of resistance, large-diameter column to the demand of setting prop pressure and setting prop time, while reduce production cost.This practicality
New another object is to provide a kind of hand-operated direction valve.
In order to solve the above technical problems, the utility model 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
Hand-operated direction valve is formed into a loop；
Three actuator ports are provided with the hand-operated direction valve at the same time, and wherein the first actuator port is stood with described first
The rodless cavity connection of column, 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 at the same time with its first actuator port and the second work
Make hydraulic fluid port conducting, its oil return opening is turned on its 3rd actuator port；
When the hand-operated direction valve works in second station, its oil inlet is turned on its 3rd actuator port, its oil return
Mouth is turned on its first actuator port and the second actuator port at the same time.
Preferably, when the hand-operated direction valve works in 3rd station, three of them actuator port is led with its oil return opening
It is logical.
Preferably, double linked one-way valve group is further included, and the oil inlet of its first check valve is connected with fuel tank, and end 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 at the same time with the hand-operated direction valve the
One actuator port or the connection of the second actuator port.
The utility model also provides a kind of hand-operated direction valve, it is characterised in that including valve body, side by side and be mounted slidably
In the first spool in the valve body and the second spool, the oil inlet being arranged on the valve body, oil return opening, the first working oil
Mouth, the second actuator port and the 3rd actuator port, and the operation handle being rotatablely arranged on the valve body；The operation
When handle is pulled to the first extreme position, first spool slides into predeterminated position and makes described in the oil inlet while connection
First actuator port and the second actuator port；When the operation handle is pulled to the second extreme position, second spool slides
To predeterminated position and the oil inlet is set to be connected with the 3rd actuator port；First spool and the second spool do not slide
When, first actuator port, the second actuator port and the 3rd actuator port are connected with the oil return opening.
Preferably, the bale handle being rotatablely arranged on the valve body, the bale handle and the behaviour are further included
It is connected as handle, and is both 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 spool or the second spool movement is promoted during position.
Preferably, further include the compression bar being rotatablely arranged on the valve body, the end surface of the compression bar with it is described
The compressed part at bale handle both ends abuts, and the end face of the compression bar and the top of first spool and the second spool are supported
Connect.
Preferably, the top of first spool is connected with the combination mandril in T fonts, and the transverse direction of the combination mandril
First actuator port and the second actuator port are blocked in both ends respectively；The top of second spool is connected with the list in strip
Hole mandril, and the 3rd actuator port is blocked in the end of the single hole mandril.
Preferably, the bottom of first spool and the second spool is both provided with spring flexible along its length.
The quick setting prop hydraulic system of coal mine hydraulic supporting provided by the utility model, mainly includes the first column, the
Two columns and hand-operated direction valve, the three form hydraulic circuit.Wherein, the first column and the second column are same hydraulic support
The two root posts of upper setting, for reaching pre-determined distance rear support ore body.Three works are provided with hand-operated direction valve at the same time
Make hydraulic fluid port, certainly, while be additionally provided with oil inlet and oil outlet, so as it can be seen that the hand-operated direction valve is specially two five logical changes
To valve or 3 position-5 way valve.Three actuator ports of hand-operated direction valve, wherein the nothing of the first actuator port and the first column
Rod cavity connects, and when the first actuator port oil inlet, the first column can be promoted to stretch out；Second actuator port and the second column without bar
Chamber connects, and similarly, when the second actuator port oil inlet, the second column can be promoted to stretch out；3rd actuator port is vertical with first at the same time
The rod chamber of column and the second column connects, and when the 3rd actuator port oil inlet, the first column and the second column can be promoted to retract.Hand
Dynamic reversal valve has at least two stations, when hand-operated direction valve is in the first station, its oil inlet at the same with the first working oil
Mouth and the conducting of the second actuator port, and then the first column and the second column are stretched out, while its oil return opening and the 3rd actuator port
Conducting, carries 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 will
First column and the second column are retracted, while its oil return opening is turned on the first actuator port and the second actuator port at the same time, are carried out
Oil return.In this way, due to being provided with three actuator ports, and the first actuator port and the second working oil at the same time on hand-operated direction valve
Rodless cavity of the mouth in the first station respectively with the first column and the second column connects, and therefore, after pressure oil is flowed out from pump, arrives
During up to hand-operated direction valve, the pressure that can be maintained like is divided into two strands of oil at the same time, has respectively entered the first actuator port and second
Actuator port, makes the first column and the second column stretch out at the same time, compared with the prior art, without passing through actuator port in pressure oil
Oil pressure is divided equally again afterwards, while without the reversal valve for adding parallel pipeline or series shunt, ensure that high workload resistance,
The first column and the second column of large-diameter column reduce production cost to the demand of setting prop pressure and setting prop time.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the hydraulic schematic diagram of hydraulic system in a kind of embodiment provided by the utility model；
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 utility model；
Fig. 4 is the birds-eye perspective of Fig. 1.
Wherein, in Fig. 1-Fig. 4：
First column -1, the second column -2, hand-operated direction valve -3, valve body -301, the first spool -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, compression bar -311, combine mandril -312, single
Hole mandril -313, spring -314, double linked one-way valve group -4.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1, Fig. 1 is the hydraulic principle of hydraulic system in a kind of embodiment provided by the utility model
Figure.
In a kind of embodiment provided by the utility model, the quick setting prop hydraulic system of coal mine hydraulic supporting
Main to include the first column 1, the second column 2 and hand-operated direction valve 3, which forms hydraulic circuit, specifically, the first column 1
It can be connected in parallel on the second column 2 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 the same time 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) at the same time on hand-operated direction valve 3 and goes out
Hydraulic fluid port (T), so as it can be seen that 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 is illustrated 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 is connected with the rodless cavity of the first column 1,
When the first actuator port A1 oil inlets, the first column 1 can be promoted to stretch out.The rodless cavity of second actuator port A2 and the second column 2
Connection, similarly, when the second actuator port A2 oil inlets, can promote the second column 2 to stretch out.3rd actuator port B is at the same time with first
Column 1 is connected with the rod chamber of the second column 2, when the 3rd actuator port B oil inlets, 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 at the same time 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 inlet
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 at the same time 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 at the same time, has respectively entered the first actuator port A1 and the second actuator port A2, makes the first column 1 and second vertical
Column 2 stretches out at the same time, compared with the 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 added, ensure that high workload resistance, the first column 1 of large-diameter column and
Two columns 2 reduce production cost to the demand of setting prop pressure and setting prop time.
Generally, hand-operated direction valve 3 also has 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 are turned on oil return inlet T.So set, when the first column 1 and the second column 2 are reaching distance to a declared goal simultaneously
After jacking up coal wall, 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, to further improve the work efficiency of 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 column 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, it is respectively that the first check valve and second are unidirectional
Valve, and when the methods of the first check valve and the second check valve pass through hydraulic control realizes duplex, i.e. the first check valve forward conduction,
At the same time by the second check valve forward conduction, vice versa.Wherein, the oil inlet of the first check valve is connected 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 is connected 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 is turned 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, reflux oil circuit distance is shortened, so as to fulfill quick
The purpose of column 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 at the same time 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 hand-operated direction valve in a kind of embodiment provided by the utility model
Structure sectional view, Fig. 4 are the birds-eye perspective of Fig. 1.
The present embodiment also provides a kind of hand-operated direction valve, specifically, the hand-operated direction valve mainly includes valve body 301, first
Spool 302, the second spool 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 for installing and accommodates remaining parts.First
302 and second spool 303 of spool 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, generally, due to being provided with the first valve in valve body 301
302 and second spool 303 of core, therefore oil inlet 304 and oil return opening 305 can be arranged on the first spool 302 and the second spool 303
Between side wall on, and under the non-working status of the first spool 302 and the second spool 303 (not moving), the first spool 302
Oil inlet 304 is blocked with the side wall of the second spool 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 spool 302 on corresponding 301 side wall of valve body, and the 3rd actuator port 308 is set
In the shift motion of the second spool 303 on corresponding 301 side wall of valve body.
Operation handle 309 is rotatably arranged on valve body 301, lower rotation can be pulled in human hand, generally, working as manipulator
When handle 309 is not pulled, in vertical state, the first spool 302 and the second spool 303 do not move at this time.And in manipulator
When handle 309 is pulled, there are two working statuses, correspond to an extreme position, i.e. the first extreme position and second limit respectively
Position, two extreme positions are symmetrical generally 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 spool 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 spool 303 to slide into predeterminated position, and make oil inlet 304 with
3rd actuator port 308 turns on.
In this way, when pressure oil is flowed 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 spool 302 or the second spool 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 both provided with (left and right) end positions of bale handle 310, which is respectively used to compress
The top of first spool 302 and the second spool 303, so that when operation handle 309 drives bale handle 310 to rotate, compressed part
3101 can promote the first spool 302 or the second spool 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 spool 302 or the second spool 303 at the same time
Pre-determined distance is slided, reaches predeterminated position.
Further, to improve reliability when bale handle 310 drives the first spool 302 or the second spool 303, improve
Distance is driven, the present embodiment is additionally arranged compression bar 311 on valve body 301.Specifically, the compression bar 311 is rotatable cantilever beam knot
Structure.The specific top for setting position to be located at 310 and first spool 302 of bale handle and the second spool 303 of compression bar 311 it
Between, and the end surface of compression bar 311 is abutted with the compressed part 3101 that 310 both ends of bale handle are set, while the end of compression bar 311
End bottom surface is abutted with the top of the first spool 302 and the second spool 303.So set, when handle compression bar 311 rotates, it two
The compressed part 3101 at end compresses the end of compression bar 311, and then makes the top of the first spool 302 of compression of compression bar 311 or the second spool 303
End, in the compression rotation process of compression bar 311, that is, drives the first spool 302 or the second spool 303 to be slided in valve body 301.
Moreover, it is contemplated that the first spool 302 need to ensure that oil inlet 304 works with first at the same time in moving process
306 and second actuator port 307 of hydraulic fluid port turns on, conversely, then needing to ensure while block the first actuator port 306 and the second working oil
Mouth 307.For this reason, combination mandril 312 is provided with the present embodiment on the top of the first spool 302, specifically, the combination mandril
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 spool 303
Single hole mandril 313, since the second spool 303 is in moving process, only 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 mandril 313 in strip
's.
Furthermore, it is contemplated that the working status of the first spool 302 and the second spool 303 is opposition, i.e., the first spool 302 exists
When mobile, the second spool 303 is necessarily in inactive state, and has one section of process, i.e., second between both state switchings
Spool 303 gradually returns to the process of initial position from shift position.Therefore, for convenience of the first spool 302 and the second spool 303
Reset operation, the present embodiment is provided with spring 314 in the bottom of the first spool 302 and the second spool 303.Specifically, should
The telescopic direction of spring 314 is the first spool 302 and the moving direction of the second spool 303, is generally also the first spool certainly
302 and second spool 303 length direction.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
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) is formed into a loop；
Three actuator ports are provided with the hand-operated direction valve (3) at the same time, and wherein the first actuator port is stood with described first
The rodless cavity connection of column (1), the second actuator port are connected with the rodless cavity of second column (2), and the 3rd actuator port is at the same time
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 at the same time with its first actuator port and the second work
Make hydraulic fluid port conducting, its oil return opening is turned on its 3rd actuator port；
When the hand-operated direction valve (3) works in second station, its oil inlet is turned on its 3rd actuator port, its oil return opening
Turned at the same time 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, three of them actuator port is turned 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 further include duplex
Unidirectional valve group (4), and the oil inlet of its first check valve is connected with fuel tank, and end hydraulic fluid port and first column (1) or the
The rodless cavity connection of two columns (2)；The oil inlet of its second check valve and the 3rd actuator port of the hand-operated direction valve (3) connect
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 spool (302) and the second spool (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 spool (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 spool (302) is slided
To predeterminated position and the oil inlet (304) is set to be connected with the 3rd actuator port (308)；First spool (302) and
When second spool (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 further include and be 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 both provided with for promoting described first when it turns to the first extreme position or the second extreme position
Spool (302) or the compressed part (3101) of the second spool (303) movement.
7. hand-operated direction valve according to claim 6, it is characterised in that further include and be rotatablely arranged at the valve body
(301) compression bar (311) on, the end surface of the compression bar (311) and the compressed part at the bale handle (310) both ends
(3101) abut, and the end face of the compression bar (311) and first spool (302) and the top of the second spool (303)
Abut.
8. hand-operated direction valve according to claim 7, it is characterised in that the top of first spool (302) is connected with
First actuator port is blocked respectively in the transverse ends of the combination mandril (312) of T fonts, and the combination mandril (312)
(306) and the second actuator port (307)；The top of second spool (303) is connected with the single hole mandril (313) in strip,
And the 3rd actuator port (308) is blocked in the end of the single hole mandril (313).
9. hand-operated direction valve according to claim 8, it is characterised in that first spool (302) and the second spool
(303) bottom is both provided with spring (314) flexible along its length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721017258.8U CN207332914U (en) | 2017-08-14 | 2017-08-14 | The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721017258.8U CN207332914U (en) | 2017-08-14 | 2017-08-14 | The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting |
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| CN207332914U true CN207332914U (en) | 2018-05-08 |
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| CN201721017258.8U Active CN207332914U (en) | 2017-08-14 | 2017-08-14 | The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339116A (en) * | 2017-08-14 | 2017-11-10 | 兖矿东华重工有限公司 | The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting |
| CN110259491A (en) * | 2019-07-04 | 2019-09-20 | 山东中煤电器有限公司 | The electronic direct-push reversal valve of hydraulic support |
-
2017
- 2017-08-14 CN CN201721017258.8U patent/CN207332914U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339116A (en) * | 2017-08-14 | 2017-11-10 | 兖矿东华重工有限公司 | The quick setting prop hydraulic system and hand-operated direction valve of a kind of coal mine hydraulic supporting |
| CN107339116B (en) * | 2017-08-14 | 2023-08-01 | 兖矿东华重工有限公司 | Quick lifting column hydraulic system of coal mine hydraulic support and manual reversing valve |
| CN110259491A (en) * | 2019-07-04 | 2019-09-20 | 山东中煤电器有限公司 | The electronic direct-push reversal valve of hydraulic support |
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