CN205078288U - Protect case subassembly of two -way lock of group - Google Patents
Protect case subassembly of two -way lock of group Download PDFInfo
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- CN205078288U CN205078288U CN201520860708.4U CN201520860708U CN205078288U CN 205078288 U CN205078288 U CN 205078288U CN 201520860708 U CN201520860708 U CN 201520860708U CN 205078288 U CN205078288 U CN 205078288U
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- valve
- spool
- push rod
- valve seat
- hole
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Abstract
The utility model discloses a protect case subassembly of two -way lock of group, including first case unit and second case unit, be equipped with the off -load chamber on the disk seat of two case units, the head of ejector pin stretches into the off -load intracavity of disk seat, still the cover has a return spring on the ejector pin, the head pole of ejector pin is equipped with the external screw thread on one's body, the position that the inside of disk seat is close to the off -load chamber is equipped with the stopper, is equipped with the through -hole on the stopper, the inner wall of through -hole be equipped with with the ejector pin on the internal thread of external screw thread looks adaptation, return spring one end is supported on the stopper, the other end is to on the ejector pin, the head of case and the valve pad sealing connection who locates the setting at the disk seat port. The utility model discloses a protect case subassembly of two -way lock of group, disk seat and ejector pin are the hydraulic assembly that threaded connection formed the cartridge formula, spend higher, the installation and maintaining be convenient for, and through set up the valve pad on the disk seat for and sealing between the case, valve pad adopt engineering plastics to make, can put forward the high leakproofness ability.
Description
Technical field
The utility model relates to the Hydraulic Elements in coal mine hydraulic supporting hydraulic circuit, and specifically, the utility model relates to a kind of core assembly of backplate bidirectional lock.
Background technology
Backplate bidirectional lock is mainly used in coal mine hydraulic supporting, and with the balance of operating valve set cooperatively hydraulic control support, protection helps the action of wall supporting jack.When operating valve set is in meta and External Force Acting result does not reach opening pressure of safety valve, it can make jack keep certain duty for a long time, thus makes hydraulic support play due support action under external force.
Traditional backplate bidirectional lock comprises valve body and is built in spool, valve seat and the push rod in valve body, valve seat is provided with unloading cavity, push rod is located at the inside of valve seat and acts in its head insertion valve seat unloading cavity mutually with the head of spool, valve body is also provided with four interfaces, and for being connected with other parts, the one-way lock part of this structure is more, assembling can be caused more loaded down with trivial details, particularly underground coal mine is by space constraint, and maintenance can be caused inconvenient, and application life is low.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of core assembly installing wall supporting one-way lock simple and easy to maintenance, and good seal performance.
To achieve these goals, the technical scheme that the utility model is taked is: a kind of core assembly of backplate bidirectional lock, comprise the first spool unit respectively in valve body one end of backplate bidirectional lock insertion valve pocket and the second spool unit, first spool unit comprises valve pocket, be located at the first spool in valve pocket, first valve seat and the first push rod, valve pocket one end is inserted in valve body, the other end is closed, second spool unit comprises union unt, be located at the second spool in union unt, second valve seat and the second push rod, union unt one end is inserted in valve body, the other end has opening, unloading cavity is provided with in first valve seat and the second valve seat, the head of the first push rod stretches in the unloading cavity of the first valve seat, the head of the second push rod stretches in the unloading cavity of the second valve seat, the head shaft of described first push rod is provided with external screw thread, the inside of described first valve seat is provided with the first limited block near the position of unloading cavity, first limited block is provided with the first through hole, the inwall of the first through hole is provided with the internal thread suitable with the external screw thread on the first push rod, the head shaft of described second push rod is provided with external screw thread, the inside of described second valve seat is provided with the second limited block near the position of unloading cavity, second limited block is provided with the second through hole, and the inwall of the second through hole is provided with the internal thread suitable with the external screw thread on the second push rod, the end of the first valve seat is provided with the first valve pad be connected with the first seal spool, and the end of the second valve seat is provided with the second valve pad be connected with the second seal spool, and the material of the first valve pad and the second valve pad is engineering plastics.
The material of described first valve pad and described second valve pad is PEEK.
Described first valve pad and described second valve pad are cirque structure.
The head of described first spool is frustum structure, and described first push rod starts to contact at described first valve pad place with the first spool.
The head of described second spool is frustum structure, and described second push rod starts to contact at described second valve pad place with the second spool.
Described valve pocket and described valve body are for being threaded.
Described union unt and described valve body are for being threaded.
The sidewall of described first valve seat has the first liquid pass hole be communicated with unloading cavity, the working hole A on described valve body is communicated with unloading cavity by the first liquid pass hole.
The sidewall of described second valve seat has the second liquid pass hole be communicated with unloading cavity, the working hole B on described valve body is communicated with unloading cavity by the second liquid pass hole.
The sidewall of described second valve seat has the 3rd liquid pass hole be communicated with the valve pocket between the second push rod with the second limited block.
The core assembly of backplate bidirectional lock of the present utility model, the valve seat of each spool unit and push rod are for being threaded, push rod can screw in the unloading cavity in valve seat, form the hydraulic package of plug-in, applying on backplate bidirectional lock to make the level of integrated system of whole reversible lock higher, being easy for installation and maintenance, namely installing simple, easy to maintenance, directly just can repair backplate bidirectional lock by changing plug-in hydraulic package; And by arranging valve pad on valve seat, for the sealing between spool, valve pad adopts engineering plastics to make, and can improve sealing performance.
Accompanying drawing explanation
This manual comprises the following drawings, shown content respectively:
Fig. 1 is the sectional view of backplate bidirectional lock;
Fig. 2 is the sectional view of the first spool unit;
Fig. 3 is the sectional view of the second spool unit;
Be labeled as in figure:
1, valve pocket; 2, the first spool; 3, the first valve seat; 4, the first push rod; 5, union unt; 6, the second spool; 7, the second valve seat; 8, the second push rod; 9, valve body; 10, the first spring; 11, the second spring; 12, the first unloading cavity; 13, the second unloading cavity; 14, the first limited block; 15, the second limited block; 16, the first valve pad; 17, the second valve pad; 18, the first liquid pass hole; 19, the second liquid pass hole; 20, the 3rd liquid pass hole; 21, the first through hole; 22, the second through hole; 23, the 4th liquid pass hole; 24, the 5th liquid pass hole.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, be described in further detail detailed description of the invention of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contribute to its enforcement.
As shown in Figure 1, for adopting the backplate bidirectional lock of core assembly of the present utility model, backplate bidirectional lock comprises valve body, this core assembly comprise respectively valve body 9 one end insert valve body 9 valve pocket in the first spool unit and the second spool unit, the first spool unit and the second spool unit are for being oppositely arranged.First spool unit comprises valve pocket 1, the first spool 2, first valve seat 3 and the first push rod 4 be located in valve pocket 1, one end of valve pocket 1 is inserted in valve body 9 and is fixedly connected with valve body 9, the other end is closed, and namely the valve pocket 1 of the first spool unit is by the opening sealing of valve pocket in this side of valve body 9.First spool 2 is positioned at the inside of valve pocket 1, and is provided with the spring for applying elastic force to the first spool 2 in valve pocket 1.Second spool unit comprises union unt 5, the second spool 6, second valve seat 7 and the second push rod 8 be located in union unt 5, one end of union unt 5 is inserted in valve body 9 and is fixedly connected with valve body 9, the other end stretches out in outside valve body 9 and this end has opening, this opening is communicated with the cavity of union unt 5 accommodated inside second spool 6, and this opening of union unt 5 is the working hole C for being connected with external connector.Second spool 6 is positioned at the inside of union unt 5, and is provided with the spring for applying elastic force to the second spool 6 in union unt 5.First valve seat 3 and the second valve seat 7 insert in the valve pocket of valve body 9, and the first push rod 4 all has with the second push rod 8 cylindrical pilot part directly contacted with the inwall of valve body 9, and the guide part of the first push rod 4 and the second push rod 8 is for being disposed adjacent and both equal diameters.The head being respectively equipped with the first unloading cavity 12 and the second unloading cavity 13, first push rod 4 in first valve seat 3 and the second valve seat 7 stretches in the first unloading cavity 12 of the first valve seat 3, and the head of the second push rod 8 stretches in the second unloading cavity 13 of the second valve seat 7.The head shaft of the first push rod 4 is provided with external screw thread, the inside of the first valve seat 3 is provided with the first limited block 14 near the position of unloading cavity, first limited block 14 is provided with the first through hole 21, the inwall of the first through hole 21 is provided with the internal thread suitable with the external screw thread on the first push rod 4, first spring 10 one end is against on the first limited block 14, and the other end is against on the first push rod 4; The head shaft of the second push rod 8 is provided with external screw thread, the inside of the second valve seat 7 is provided with the second limited block 15 near the position of unloading cavity, second limited block 15 is provided with the second through hole 22, the inwall of the second through hole 22 is provided with the internal thread suitable with the external screw thread on the second push rod 8, second spring 11 one end is against on the second limited block 15, and the other end is against on the second push rod 8.Compared with prior art, the valve seat of two core assemblies and push rod are and are threaded, push rod can screw in the unloading cavity in valve seat, form the hydraulic package of plug-in, make the level of integrated system of whole backplate bidirectional lock higher, being easy for installation and maintenance, can directly just can repairing by changing plug-in hydraulic package.
As shown in Figure 2, the end of the first valve seat 3 is provided with the first valve pad 16 be tightly connected with the first spool 2, the center, end of the first valve seat 3 has an opening be communicated with the first unloading cavity 12, this opening is step, namely first valve pad 16 embeds and is arranged in the hole, large footpath of this opening, and the first valve pad 16 is made for adopting engineering plastics.As preferably, the material of the first valve pad 16 is polyether-ether-ketone (PEEK), and the first valve pad 16 adopting this material to make, can improve the sealing performance between the first spool 2.
As shown in Figure 3, the end of the second valve seat 7 is provided with the second valve pad 17 be tightly connected with the second spool 6, the center, end of the second valve seat 7 has an opening be communicated with the second unloading cavity 13, this opening is step, namely second valve pad 17 embeds and is arranged in the hole, large footpath of this opening, and the second valve pad 17 is made for adopting engineering plastics.As preferably, the material of the second valve pad 17 is polyether-ether-ketone (PEEK), adopts people's valve pad that this material is made, and can improve the sealing performance between the second spool 6.
As shown in Figures 2 and 3, the first valve pad 16 is identical with the structure of the second valve pad 17, and shape is annular, and cross section is rectangle.First valve pad 16 is coaxial with the first valve seat 3, and the center-hole diameter of the first valve pad 16 is equal with the diameter holes diameter of the port of the first valve seat 3.Second valve pad 17 is coaxial with the second valve seat 7, and the center-hole diameter of the second valve pad 17 is equal with the diameter holes diameter of the port of the second valve seat 7.
As shown in Figure 2, the head of the first spool 2 is frustum structure, first push rod 4 starts to contact at the first valve pad 16 place with the first spool 2, the head of such first spool 2 no longer stretches in the first unloading cavity 12, first push rod 4 only starts to contact in the port of the first valve seat 3 with the first spool 2, the structure of the first spool 2 is simpler, the more compact structure of backplate bidirectional lock entirety.Under the impetus of valve pocket 1 inner spring, head and first valve pad 16 of the first spool 2 are tightly connected.
As shown in Figure 3, the head of the second spool 6 is frustum structure, second push rod 8 starts to contact at people's valve pad place with the second spool 6, the head of such second spool 6 no longer stretches in the second unloading cavity 13, second push rod 8 only starts to contact in the port of the second valve seat 7 with the second spool 6, the structure of the second spool 6 is simpler, the more compact structure of backplate bidirectional lock entirety.Under the impetus of valve pocket 1 inner spring, head and second valve pad 17 of the second spool 6 are tightly connected.
As shown in Figures 2 and 3, valve pocket 1 and valve body 9 are for being threaded, and first valve seat 3 one end to be inserted in valve pocket 1 with it for being threaded, and be provided with sealing ring, be provided with sealing ring between valve pocket 1 and valve body 9 between the first valve seat 3 and valve pocket 1.Be provided with sealing ring between the guide part of the first push rod 4 and valve body 9, and sealing snare is located on the guide part of the first push rod 4.Union unt 5 and valve body 9 are for being threaded, second valve seat 7 one end to be inserted in union unt 5 with it for being threaded, and be provided with sealing ring, be provided with sealing ring between union unt 5 and valve body 9 between the second valve seat 7 and union unt 5.These sealing rings are and adopt quality of rubber materials to make, and can improve sealing performance.
As shown in Figure 1, backplate bidirectional lock have five working holes, be respectively working hole PA, working hole PB, working hole A, working hole B and working hole C, working hole C is located on union unt 5, working hole PA and working hole PB is positioned at the same side of valve body 9, working hole A and working hole B is positioned at the same side of valve body 9, and working hole A is positioned at the relative both sides of valve body 9 with working hole B with working hole PA and working hole PB.As shown in Figure 2, the sidewall of the first valve seat 3 of the first spool unit has the first liquid pass hole 18 be communicated with the first unloading cavity 12, working hole A is communicated with the first unloading cavity 12 by the first liquid pass hole 18; The sidewall of valve pocket 1 has the 4th liquid pass hole 23 with valve pocket 1 inner space, working hole PA is by the inner space of the 4th liquid pass hole 23 with valve pocket 1, and when the first spool 2 opening, the inner chamber of valve pocket 1 is communicated with the first unloading cavity 12.
As shown in Figure 3, the sidewall of the second valve seat 7 of the second spool unit has the second liquid pass hole 19 be communicated with the second unloading cavity 13, working hole B is communicated with the second unloading cavity 13 by the second liquid pass hole 19; The sidewall of union unt 5 has the 5th liquid pass hole 24 with union unt 5 inner space, working hole PB is by the inner space of the 5th liquid pass hole 24 with union unt 5, and when the second spool 6 opening, the inner chamber of union unt 5 is communicated with the second unloading cavity 13.The sidewall of the second valve seat 7 also has and partially communicating 3rd liquid pass hole 20 of valve pocket between the second push rod 8 and the second limited block 15, second liquid pass hole 19 is communicated with working hole B with the one end open of the 3rd liquid pass hole 20, and the other end opening of the second liquid pass hole 19 and the 3rd liquid pass hole 20 lays respectively at the both sides of the second limited block 15.
Below by reference to the accompanying drawings the utility model is exemplarily described.Obviously, the utility model specific implementation is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; Or without improvement, above-mentioned design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model.
Claims (10)
1. the core assembly of a backplate bidirectional lock, comprise the first spool unit respectively in valve body one end of backplate bidirectional lock insertion valve pocket and the second spool unit, first spool unit comprises valve pocket, be located at the first spool in valve pocket, first valve seat and the first push rod, valve pocket one end is inserted in valve body, the other end is closed, second spool unit comprises union unt, be located at the second spool in union unt, second valve seat and the second push rod, union unt one end is inserted in valve body, the other end has opening, unloading cavity is provided with in first valve seat and the second valve seat, the head of the first push rod stretches in the unloading cavity of the first valve seat, the head of the second push rod stretches in the unloading cavity of the second valve seat, it is characterized in that: the head shaft of described first push rod is provided with external screw thread, the inside of described first valve seat is provided with the first limited block near the position of unloading cavity, first limited block is provided with the first through hole, the inwall of the first through hole is provided with the internal thread suitable with the external screw thread on the first push rod, the head shaft of described second push rod is provided with external screw thread, the inside of described second valve seat is provided with the second limited block near the position of unloading cavity, second limited block is provided with the second through hole, and the inwall of the second through hole is provided with the internal thread suitable with the external screw thread on the second push rod, the end of the first valve seat is provided with the first valve pad be connected with the first seal spool, and the end of the second valve seat is provided with the second valve pad be connected with the second seal spool, and the material of the first valve pad and the second valve pad is engineering plastics.
2. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: the material of described first valve pad and described second valve pad is PEEK.
3. the core assembly of backplate bidirectional lock according to claim 1 and 2, is characterized in that: described first valve pad and described second valve pad are cirque structure.
4. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: the head of described first spool is frustum structure, and described first push rod starts to contact at described first valve pad place with the first spool.
5. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: the head of described second spool is frustum structure, and described second push rod starts to contact at described second valve pad place with the second spool.
6. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: described valve pocket and described valve body are for being threaded.
7. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: described union unt and described valve body are for being threaded.
8. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: the sidewall of described first valve seat has the first liquid pass hole be communicated with unloading cavity, and the working hole A on described valve body is communicated with unloading cavity by the first liquid pass hole.
9. the core assembly of backplate bidirectional lock according to claim 1, is characterized in that: the sidewall of described second valve seat has the second liquid pass hole be communicated with unloading cavity, and the working hole B on described valve body is communicated with unloading cavity by the second liquid pass hole.
10. the core assembly of backplate bidirectional lock according to claim 9, is characterized in that: the sidewall of described second valve seat has the 3rd liquid pass hole be communicated with the valve pocket between the second push rod with the second limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860708.4U CN205078288U (en) | 2015-03-11 | 2015-10-30 | Protect case subassembly of two -way lock of group |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015201381138 | 2015-03-11 | ||
| CN201520138113 | 2015-03-11 | ||
| CN201520860708.4U CN205078288U (en) | 2015-03-11 | 2015-10-30 | Protect case subassembly of two -way lock of group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078288U true CN205078288U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520860708.4U Active CN205078288U (en) | 2015-03-11 | 2015-10-30 | Protect case subassembly of two -way lock of group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137254A (en) * | 2021-04-23 | 2021-07-20 | 北京天地玛珂电液控制系统有限公司 | Valve element assembly and bidirectional lock |
-
2015
- 2015-10-30 CN CN201520860708.4U patent/CN205078288U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137254A (en) * | 2021-04-23 | 2021-07-20 | 北京天地玛珂电液控制系统有限公司 | Valve element assembly and bidirectional lock |
| CN113137254B (en) * | 2021-04-23 | 2023-10-20 | 北京天玛智控科技股份有限公司 | Valve core assembly and bidirectional lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171207 Address after: Zhi Zhen Wuhu County in Anhui province Wuhu city Anhui Bay 241000 Wuhu Economic Development Zone Sunshine Road No. 768 building 06 Patentee after: Hongda Intelligent Machinery Co., Ltd. Address before: 241000 Wuhu County, Anhui Province Machinery Industrial Park, Wuhu Patentee before: Julong Group Wuhu Xinglong Hydraulic Co., Ltd. |