CN208518687U - Combined bidirectional for hydraulic support is locked - Google Patents
Combined bidirectional for hydraulic support is locked Download PDFInfo
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- CN208518687U CN208518687U CN201821045748.3U CN201821045748U CN208518687U CN 208518687 U CN208518687 U CN 208518687U CN 201821045748 U CN201821045748 U CN 201821045748U CN 208518687 U CN208518687 U CN 208518687U
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- inner cavity
- valve
- valve casing
- hydraulic support
- mandril
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Abstract
The utility model discloses a kind of combined bidirectional locks for hydraulic support, it is related to valve design field, including shell, it further include two check valves of setting inside the shell, the check valve includes valve casing, the valve casing is equipped with inner cavity, opposite spool and mandril is arranged in elasticity in the inner cavity of the valve casing, the inner cavity of valve casing is divided into the first movable inner cavity by the spool and mandril, second movable inner cavity and third activity inner cavity, when the mandril that the hydraulic oil in third activity inner cavity pushes, mandril pushes valve core movement, the cavity of first movable inner cavity becomes smaller, oil outlet is converted from closed state to opening state.The utility model has the beneficial effects that devising two check valves, it ensure that the column of hydraulic support and the connection in high pressure liquid source, improve the unfailing performance of hydraulic support；Shell and two check valves are devised, integration degree is high to check valve, small in size；Valve casing is combined formula design, processing and installation is convenient, good airproof performance, receiving it is high pressure resistant.
Description
Technical field
The utility model relates to valve design field, especially a kind of combined bidirectional for hydraulic support is locked.
Background technique
With the raising of the mechanical degree of mole, guarantee the safety of development end, hydraulic support is that comprehensive mechanization is adopted
The key equipment of coal, hydraulic support are the support apparatus of coal mine fully-mechanized coalface, are the key equipments of fully mechanized mining, because
This hydraulic support is an important mine device, and the reliability of hydraulic support depends on the reliability of hydraulic package,
The damage of middle valve will result directly in hydraulic support failure or malfunction, cause personal injury and working face roof fall accident, even
Working face is set to stop production, the valve for roof support is the important component for guaranteeing hydraulic support and working normally in underground coal mine, and branch
Most accurate in frame, most critical component, in the existing lock for hydraulic support, there are no a kind of combined bidirectional lock, tools
There is very high reliability.
Utility model content
The purpose of this utility model is to improve the unfailing performance of hydraulic support by taking the reversible lock of hydraulic support as an example, design
A kind of combined bidirectional for hydraulic support is locked.
Realize that above-mentioned purpose the technical solution of the utility model is, a kind of combined bidirectional lock for hydraulic support, packet
Shell is included, further includes two check valves of setting inside the shell, the check valve includes valve casing, and the valve casing is equipped with inner cavity, institute
It states the spool and mandril that elasticity setting is opposite in the inner cavity of valve casing, the spool and mandril and the inner cavity of valve casing is divided into the first activity
Inner cavity, the second movable inner cavity and third activity inner cavity, the valve casing are equipped with the oil outlet communicated with the second movable inner cavity and oil inlet
Hole, the valve casing are equipped with the pressure port communicated with third activity inner cavity, and the fuel feed hole includes interior fuel feed hole and outer fuel feed hole, institute
When stating the cavity maximum of the first movable inner cavity, the side wall of spool is closed oil outlet, when the hydraulic oil in third activity inner cavity pushes
Mandril when, mandril pushes valve core movement, and the cavity of the first movable inner cavity becomes smaller, and oil outlet is turned from closed state to opening state
Change；The shell is equipped with the import PA and import PB being respectively communicated with two outer fuel feed holes, and the shell is equipped with and two oil outlets point
The outlet A and outlet B not being connected to, the two interior fuel feed holes are connected to by the cavity in setting shell with two pressure ports.
Further, the valve casing includes valve pocket, excessively liquid set and end cap, and the valve pocket, excessively liquid set and end cap pass through screw
It links together.
Further, the check valve further includes the big spring being arranged in the second movable chamber, and the mandril passes through big
Spring is arranged in the inner cavity of valve casing.
Further again, described cross in liquid set is equipped with the baffle with movable span, and one end setting of the big spring exists
On baffle, the other end is located at the end of mandril.
Further, the oil outlet is arranged on valve pocket, and on crossing liquid set, the pressure port is set for the fuel feed hole setting
It sets in end cap.
Further, the check valve further includes the tension spring being arranged in third movable chamber, and the mandril passes through tension spring bullet
Property is arranged in the inner cavity of valve casing.
Further, the check valve further includes the little spring being arranged in the first movable chamber, and the spool passes through small bullet
Spring is resiliently arranged in the inner cavity of valve casing.
It further, further include the valve seat for limiting spool moving distance, the valve seat is mounted in the inner cavity of valve casing.
Further, the junction of the check valve and shell is equipped with sealing ring and retaining ring.
The beneficial effects of the utility model are: devising two check valves, the column and high pressure liquid of hydraulic support ensure that
The connection in source improves the unfailing performance of hydraulic support；Shell and two check valves are devised, to check valve integration degree
Height, it is small in size；Valve casing is combined formula design, processing and installation is convenient, good airproof performance, receiving it is high pressure resistant.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the application is locked for the combined bidirectional of hydraulic support；
Fig. 2 is the structural schematic diagram of the application check valve.
In above each figure, 1, shell；2, check valve；201, valve casing；202, spool；203, mandril；204, in the first activity
Chamber；205, the second movable inner cavity；206, third activity inner cavity；207, oil outlet；208, fuel feed hole；209, pressure port；210, small
Spring；211, big spring；212, valve pocket；213, liquid set is crossed；214, end cap；215, valve seat；3, sealing ring；4, retaining ring.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to foundation specific embodiment of the present utility model, structure, feature and its effect, in detail
Carefully it is described as follows:
The valve for roof support is to guarantee hydraulic support in the important component and bracket that underground coal mine works normally most
Accurate, most critical component, the application are illustrated by taking hydraulic support as an example.
A kind of combined bidirectional lock for hydraulic support further includes setting in shell 1 as shown in Figure 1, including shell 1
The junction of two interior check valves 2, check valve 2 and shell 1 is equipped with sealing ring 3 and retaining ring 4.In conjunction with reference to Fig. 2, check valve
2 include valve casing 201, which is equipped with inner cavity, and spool 202 and mandril 203, spool 202 are equipped in the inner cavity of valve casing 201
It is oppositely arranged with mandril 203, mandril 203 can push spool 202 mobile.Spool 202 and mandril 203 are by the inner cavity of valve casing 201
It is divided into the first movable inner cavity 205 in movable inner cavity 204, second and third activity inner cavity 206, i.e., spool 202 is in the first movable inner cavity
204 and second move between movable inner cavity 205, and mandril 203 is transported between the second movable inner cavity 205 and third activity inner cavity 206
It is dynamic, the oil outlet 207 and fuel feed hole 208 communicated with the second movable inner cavity 205 is equipped in valve casing 201, here, fuel feed hole 208 wraps
Interior fuel feed hole and outer fuel feed hole are included, valve casing 201 is equipped with the pressure port 209 communicated with third activity inner cavity 206.Shell 1 be equipped with
The import PA11 and import PB12 that two outer fuel feed holes are respectively communicated with, shell 1 are equipped with the outlet being respectively communicated with two oil outlets 207
A13 and outlet B14, fuel feed hole is connected to by the cavity in setting shell 1 with two pressure ports 209 in two.It can from Fig. 1
Out, hydraulic oil enters from import PA11 and import PB12, then goes out behind the second movable inner cavity 205 from outer fuel feed hole, and two
Flow direction flows to third activity inner cavity 206 from pressure port 209 after oil circuit collects.
Position shown in Fig. 2 is that the cavity of the first movable inner cavity 204 is maximum, and the side wall of spool 202 is just closed oil outlet
207, this when, the hydraulic fluid pressure flowed into from import PA11 and import PB12 is increased, hydraulic oil will push mandril 203 to the left
Mobile, then mandril 203 pushes spool 202 to move, and the cavity of the first movable inner cavity 204 becomes smaller, and oil outlet 207 is by closed state
It is converted to opening state, the hydraulic oil in the second movable inner cavity 205 will be flowed out from open oil outlet 207.Work as reduction
When from the hydraulic fluid pressure that import PA11 and import PB12 are flowed into, that is, reduce the hydraulic oil pressure in the second movable inner cavity 205
When power, then the meeting of mandril 203 opposite direction is mobile, and the spool 202 of elasticity setting can move backward, and then oil outlet 207 is blocked.
To reduce the difficulty of valve casing 201 in the production process, installation effectiveness is improved, valve casing 201 is designed to knockdown
Connection structure comprising valve pocket 212, excessively liquid set 213 and end cap 214, valve pocket 212, excessively liquid set 213 and end cap 214 pass through screw
Or other locking mechanisms link together.At this point, oil outlet 207 is arranged on valve pocket 212, liquid is being crossed in the setting of fuel feed hole 208
On set 213, pressure port 209 is arranged in end cap 214.
Spool 202 and mandril 203 are the elasticity settings in the inner cavity of valve casing 201, can be in the following way: the
Big spring 211 is set in two movable chambers, crosses in liquid set 213 and is equipped with the baffle with movable span, mandril 203 passes through the baffle, greatly
One end of spring 211 is arranged on baffle, and the other end is located at the end of mandril 203.Alternatively, a piece tension spring of setting, the tension spring are set
It sets in third movable chamber, the end of one end connection mandril 203 of tension spring, the other end is connected to the cavity ends of valve casing 201, i.e.,
Hydraulic oil and drawing are the same as in third movable chamber.
Little spring 210 is set in the first movable chamber, and one end of little spring 210 is arranged in the cavity of spool 202, another
The cavity ends of valve casing 201 are arranged in end, i.e., spool 202 can be made past in the inner cavity of valve casing 201 by compressing little spring 210
It is multiple mobile.On this basis, it is also provided with the valve seat 215 of limitation 202 moving distance of spool in valve casing 201, passes through valve seat 215
Design can limit the maximum moving distance of spool 202, the great variety because of hydraulic oil be reduced, so that the mobile width of spool 202
Degree increases, and is detached from control.The valve seat 215 is mounted in the inner cavity of valve casing 201 by screw, for leakproof, can encrypt seal.
When in use, a check valve 2 is connected to the column of hydraulic support, when abnormal conditions occur, then another
A check valve 2 is connected to the column of hydraulic support, to protect the normal work of sign column, due to devising two check valves 2, is protected
The column of hydraulic support and the connection in high pressure liquid source have been demonstrate,proved, therefore has improved the unfailing performance of hydraulic support.
The utility model is described above with reference to preferred embodiment, but the protection scope of the utility model is not
Limited to this can carry out various improvement and can be with equivalent without departing from the scope of the invention to it
Object replaces component therein, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can appoint
Meaning mode combines, and any reference signs in the claims should not be construed as limiting the involved claims no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive.Therefore, any right that falls into is wanted
All technical solutions in the range of asking are within the protection scope of the present utility model.
Claims (9)
1. a kind of combined bidirectional for hydraulic support is locked, including shell (1), which is characterized in that further include being arranged in shell
(1) two check valves (2) in,
The check valve (2) includes valve casing (201), and the valve casing (201) is equipped with inner cavity, and the inner cavity of the valve casing (201) is hit by a bullet
Property opposite spool (202) and mandril (203) be set, the spool (202) and mandril (203) are by the inner cavity of valve casing (201) point
For the first movable inner cavity (204), the second movable inner cavity (205) and third activity inner cavity (206), the valve casing (201) equipped with
The oil outlet (207) and fuel feed hole (208) that second movable inner cavity (205) communicates, the valve casing (201) equipped with in third activity
The pressure port (209) that chamber (206) communicates, the fuel feed hole (208) include interior fuel feed hole and outer fuel feed hole, in first activity
When the cavity maximum of chamber (204), the side wall of spool (202) is closed oil outlet (207), the liquid in third activity inner cavity (206)
When mandril (203) that pressure oil pushes, mandril (203) pushes spool (202) movement, and the cavity of the first movable inner cavity (204) becomes smaller,
Oil outlet (207) is converted from closed state to opening state；
The shell (1) is equipped with the import PA (11) and import PB (12) being respectively communicated with two outer fuel feed holes, and the shell (1) sets
There are the outlet A (13) being respectively communicated with two oil outlets (207) and outlet B (14), the two interior fuel feed holes pass through setting shell (1)
Interior cavity is connected to two pressure ports (209).
2. the combined bidirectional according to claim 1 for hydraulic support is locked, which is characterized in that the valve casing (201)
Including valve pocket (212), excessively liquid set (213) and end cap (214), the valve pocket (212), excessively liquid set (213) and end cap (214) pass through
Screw links together.
3. the combined bidirectional according to claim 2 for hydraulic support is locked, which is characterized in that the check valve (2)
It further include the big spring (211) being arranged in the second movable chamber, the mandril (203) is resiliently arranged in by big spring (211)
In the inner cavity of valve casing (201).
4. the combined bidirectional according to claim 3 for hydraulic support is locked, which is characterized in that described to cross liquid set
(213) baffle with movable span is equipped in, one end of the big spring (211) is arranged on baffle, and the other end is located at mandril
(203) end.
5. the combined bidirectional according to claim 2 for hydraulic support is locked, which is characterized in that the oil outlet
(207) it is arranged on valve pocket (212), fuel feed hole (208) setting is on crossing liquid set (213), pressure port (209) setting
On end cap (214).
6. the combined bidirectional according to claim 1 for hydraulic support is locked, which is characterized in that the check valve (2)
It further include the tension spring being arranged in third movable chamber, the mandril (203) is resiliently arranged in the inner cavity of valve casing (201) by tension spring
In.
7. the combined bidirectional according to claim 1 for hydraulic support is locked, which is characterized in that the check valve (2)
It further include the little spring (210) being arranged in the first movable chamber, the spool (202) is resiliently arranged in by little spring (210)
In the inner cavity of valve casing (201).
8. the combined bidirectional according to claim 1 for hydraulic support is locked, which is characterized in that further include limitation spool
(202) valve seat (215) of moving distance, the valve seat (215) are mounted in the inner cavity of valve casing (201).
9. the combined bidirectional according to claim 1 for hydraulic support is locked, which is characterized in that the check valve (2)
Sealing ring (3) and retaining ring (4) are equipped with the junction of shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821045748.3U CN208518687U (en) | 2018-07-03 | 2018-07-03 | Combined bidirectional for hydraulic support is locked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821045748.3U CN208518687U (en) | 2018-07-03 | 2018-07-03 | Combined bidirectional for hydraulic support is locked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208518687U true CN208518687U (en) | 2019-02-19 |
Family
ID=65337306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821045748.3U Active CN208518687U (en) | 2018-07-03 | 2018-07-03 | Combined bidirectional for hydraulic support is locked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208518687U (en) |
-
2018
- 2018-07-03 CN CN201821045748.3U patent/CN208518687U/en active Active
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