CN107882820A - A kind of fluid pressure type reversible lock - Google Patents
A kind of fluid pressure type reversible lock Download PDFInfo
- Publication number
- CN107882820A CN107882820A CN201610865735.XA CN201610865735A CN107882820A CN 107882820 A CN107882820 A CN 107882820A CN 201610865735 A CN201610865735 A CN 201610865735A CN 107882820 A CN107882820 A CN 107882820A
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- spring
- joint
- reversible lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
Abstract
The invention discloses a kind of fluid pressure type reversible lock, including valve string, valve body, piston and unloading cutout valve；Valve string is made up of screw head, interface, spring, off-load valve element, seal, guide sleeve, plays a part of controlling liquid；Valve body surface is cast with porous and path, and its structure is used for standing valve string and unloading cutout valve, and facilitates liquid communication；Unloading cutout valve is made up of valve rod, pin, spring assembly and outer cover, and liquid super-pressure is prevented with spring performance, plays a part of protecting circuit and elements.The present invention sets precision, wide using pressure limit, can bear super-pressure, reasonable in design, energy-conserving and environment-protective are easy to operate.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, and in particular to a kind of fluid pressure type reversible lock.
Background technology
Hydraulic system is the key equipment of comprehensive mechanization, and it is related to the security of whole motion process, in real
Not only security performance is still weak hydraulic system, and the pollution problem of super-pressure draining cannot be solved effectively always,
Therefore, it is necessary to a kind of new fluid pressure type reversible lock, to ensure to provide the safety coefficient of normal reliable, and it is effective and feasible
Energy-conserving and environment-protective ability.
The content of the invention
The purpose of the present invention is to be directed to existing deficiency, there is provided a kind of fluid pressure type reversible lock, the reversible lock work as industrial and mineral pressure
Too high, during more than rated pressure, safety valve is depressured automatically, is ensured that liquid backflow re-uses, is played safeguard protection and energy-saving ring
The effect of guarantor.
To achieve the above object, the present invention provides following technical scheme：
A kind of fluid pressure type reversible lock, including valve string, valve body, piston and unloading cutout valve, are characterised by：The valve body is provided with four
Cavity, each one of left and right, following two, remaining is all fluid path；The valve string is installed in two cavitys of valve body or so, group
Part includes screw head, joint, spring, off-load valve element, seal, guide sleeve；The cavity of left and right two is therefrom separated by piston；Screw head spiral shell
Line jointing left end, joint are threadedly coupled with left side valve body cavity end mouth, and joint inner chamber insertion spring, spring right-hand member, which is withstood, to be unloaded
Cavity on the left of lotus valve element, joint inner chamber are corresponding with off-load valve element cavity；On the right side of off-load valve element long head position stretch into seal and
In guide sleeve；Guide sleeve is connected by threaded with joint；Inner chamber is provided with inside the joint, inner chamber sets multistage T-shaped chuck,
Keep right side set annular through-hole；The off-load valve element cavity is arranged on left side, and cavity root is provided with annular oil leak hole；It is described
Off-load valve element cavity sets spring chuck；One two sides respectively with piston of the off-load valve element of the valve string of left and right two mutually touches；
Each one unloading cutout valve of placement in two cavitys of the valve body lower portion；Unloading cutout valve includes cylinder body, the cylinder body by every
Into upper and lower two cavitys, sliding block is provided between two cavitys, screw plug is connected by the termination of external screw thread and upper plenum；Valve rod
One end stretch into the groove of screw plug, the other end touches through thread plug with sliding block；The thread plug is threadedly coupled with screw plug；Institute
Fluid apertures is irised out in the bottom for stating upper plenum provided with one；Cavity is longitudinally offered on the valve rod, the bottom of cavity is provided with a circle discharge opeing
Hole；Screw plug corresponding with the cavity of valve rod is provided with inlet opening；The bottom of the right cavity is provided with spring base, one end of spring
It is enclosed on spring base, the other end is enclosed in regulating bolt；The regulating bolt is connected by screw thread with the cavity of lower cavity.It is described
The termination of cavity is connected with dust cap under unloading cutout valve；The regulating bolt of the unloading cutout valve lower end and the cavity of lower cavity
Between connection clamp pin；All reversible lock valve elements and valve rod are closed by spring, spring washer；All junctions of the reversible lock
All sealed by polyformaldehyde back-up ring or rubber or abrasive article.
Compared with prior art, the beneficial effects of the invention are as follows：
The unloading cutout valve set in reversible lock, the high voltage protective function of reversible lock is improved, and the pipeline of valve body is set
The secondary recycling of liquid that more can be under general warranty working environment, plays a part of energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is operation principle sketch of the present invention.
In figure：1. the valve rod of 8. valve body of screw head 2. joint, 3. spring, 4. off-load valve element, 5. seal, 6. guide sleeve, 7. piston 9.
10. the regulating bolt of 17. sealing gasket of outage 11. screw thread, 12. fluid hole, 13. sliding block, 14. spring base, 15. spring, 16. cylinder body 18.
19. clamp the screwed plug of 20. dust cap of pin, 21. threaded 22..
Embodiment：
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the drawings and the specific embodiments,
The present invention will be described in further detail.
As shown in Fig. 1 schematic structural views of the invention, a kind of fluid pressure type reversible lock, including valve string, valve body, piston and unloading are disconnected
Road valve, is characterised by：The valve body 8 is provided with four cavitys, and each one of left and right, following two, remaining is all fluid path；It is described
Valve string is installed in 8 or so two cavitys of valve body, and component includes screw head 1, joint 2, spring 3, off-load valve element 4, seal 5, led
To set 6；The cavity of left and right two is therefrom separated by piston 7；The left end of 1 thread connecting joint of screw head 2, joint 2 and the cavity of left side valve body 8
Port threads connect, and the inner chamber of joint 2 insertion spring 3, the right-hand member of spring 3 withstands the left side cavity of off-load valve element 4, and the inner chamber of joint 2 is with unloading
The cavity of lotus valve element 4 is corresponding；The long head position in the right side of off-load valve element 4 is stretched into seal 5 and guide sleeve 6；Guide sleeve 6 passes through screw thread
Pin 21 is connected with joint 2；The inside of joint 2 is provided with inner chamber, and inner chamber sets multistage T-shaped chuck, and side of keeping right sets annular
Through hole；The cavity of off-load valve element 4 is arranged on left side, and cavity root is provided with annular oil leak hole；The cavity of off-load valve element 4 is set
Spring chuck；One two sides respectively with piston 7 of the off-load valve element 4 of the valve string of left and right two mutually touches；The bottom of valve body 8
Each one unloading cutout valve of placement in two cavitys；Unloading cutout valve includes cylinder body 16, and the cylinder body 16 is divided into upper and lower two
Cavity, sliding block 13 is provided between two cavitys, and screw plug 11 passes through the termination of external screw thread and upper plenum and connected；One end of valve rod 9
Stretch into the groove of screw plug 11, the other end touches through thread plug 22 with sliding block 13；The thread plug 22 connects with the screw thread of screw plug 11
Connect；Fluid apertures 12 is irised out in the bottom of the upper plenum provided with one；Cavity is longitudinally offered on the valve rod 9, the bottom of cavity is provided with
One circle outage 10；Screw plug 11 corresponding with the cavity of valve rod 9 is provided with inlet opening；The bottom of the right cavity is provided with spring
Seat 14, one end of spring 15 is enclosed on spring base 14, and the other end is enclosed in regulating bolt 18；The regulating bolt 18 passes through screw thread
It is connected with the cavity of lower cavity.The termination of cavity is connected with dust cap 20 under the unloading cutout valve；Under the unloading cutout valve
Connection clamps pin 19 between the cavity of the regulating bolt 18 at end and lower cavity；All reversible lock valve elements and valve rod by spring,
Spring washer is closed；All junctions of the reversible lock are all sealed by polyformaldehyde back-up ring or rubber or abrasive article.
As shown in Fig. 2 operation principle sketches of the present invention：When normal pressure works, highly pressurised liquid enters PA by main control valve
Mouth pushes piston open, opens PB, and liquid enters A mouths.Main control valve stops feed flow A mouth valve elements and closed automatically, A intracavity liquid automatic sealing packages
Close.When A intracavitary sealing liquids are acted on forming high pressure by external pressure, high pressure increases to certain pressure pusher ovable valve stem and pin,
Valve rod looping pit is set to connect outer cover looping pit, liquid returns to PA mouths, A cavity pressures is declined automatically, when A cavity pressures drop to necessarily
Valve rod is again automatic after degree closes.
Fluid pressure type reversible lock described in this practical embodiment, simple in construction, reasonable in design, easy to operate, section
Can environmental protection, when pressure fluid is too high, during more than rated pressure, valve rod movement decompression, play safeguard protection effect.
What the present invention was illustrated by specific implementation process, without departing from the present invention, can also be right
Patent of the present invention carries out various conversion and equivalent substitute, and therefore, patent of the present invention is not limited to disclosed specific implementation process,
And the whole embodiments fallen into scope of the patent claims of the present invention should be included.
Claims (5)
1. a kind of fluid pressure type reversible lock, including valve string, valve body, piston and unloading cutout valve, are characterised by：The valve body（8）Open
There are four cavitys, each one of left and right, following two, remaining is all fluid path；The valve string is installed on valve body（8）Left and right two
In cavity, component includes screw head（1）, joint（2）, spring（3）, off-load valve element（4）, seal（5）, guide sleeve（6）；Left and right two
Individual cavity is by piston（7）Therefrom separate；Screw head（1）Thread connecting joint（2）Left end, joint（2）With left side valve body（8）Cavity end
Mouth threaded connection, joint（2）Spring is inserted in inner chamber（3）, spring（3）Right-hand member withstands off-load valve element（4）Left side cavity, joint（2）
Inner chamber and off-load valve element（4）Cavity is corresponding；Off-load valve element（4）Seal is stretched into the long head position in right side（5）And guide sleeve（6）
It is interior；Guide sleeve（6）Pass through threaded（21）And joint（2）It is connected；The joint（2）Inside is provided with inner chamber, and inner chamber sets multistage T
Shape chuck, side of keeping right set annular through-hole；The off-load valve element（4）Cavity is arranged on left side, and cavity root is provided with annular
Oil leak hole；The off-load valve element（4）Cavity sets spring chuck；The off-load valve element of the valve string of left and right two（4）One respectively with
Piston（7）Two sides mutually touch；The valve body（8）Each one unloading cutout valve of placement in two cavitys of bottom；Unloading open circuit
Valve includes cylinder body（16）, the cylinder body（16）Upper and lower two cavitys are divided into, sliding block is provided between two cavitys（13）, spiral shell
It is stifled（11）Connected by the termination of external screw thread and upper plenum；Valve rod（9）One end stretch into screw plug（11）Groove in, the other end is worn
Cross thread plug（22）With sliding block（13）Touch；The thread plug（22）With screw plug（11）Threaded connection；The bottom of the upper plenum
Fluid apertures is irised out provided with one（12）；The valve rod（9）Upper longitudinal direction offers cavity, and the bottom of cavity is provided with a circle outage（10）；
With valve rod（9）Cavity corresponding to screw plug（11）It is provided with inlet opening；The bottom of the right cavity is provided with spring base（14）, bullet
Spring（15）One end be enclosed on spring base（14）On, the other end is enclosed on regulating bolt（18）On；The regulating bolt（18）Pass through spiral shell
Line is connected with the cavity of lower cavity.
2. fluid pressure type reversible lock according to claim 1, it is characterised in that the termination of cavity connects under the unloading cutout valve
It is connected to dust cap（20）.
3. fluid pressure type reversible lock according to claim 1 or 2, it is characterised in that the regulation of the unloading cutout valve lower end
Bolt（18）Connection clamps pin between the cavity of lower cavity（19）.
4. fluid pressure type reversible lock according to claim 1, it is characterised in that：All reversible lock valve elements and valve rod are by bullet
Spring, spring washer are closed.
5. fluid pressure type reversible lock according to claim 1, it is characterised in that：All junctions of the reversible lock are all by gathering
Formaldehyde back-up ring or the sealing of rubber or abrasive article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865735.XA CN107882820A (en) | 2016-09-30 | 2016-09-30 | A kind of fluid pressure type reversible lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865735.XA CN107882820A (en) | 2016-09-30 | 2016-09-30 | A kind of fluid pressure type reversible lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107882820A true CN107882820A (en) | 2018-04-06 |
Family
ID=61768739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610865735.XA Pending CN107882820A (en) | 2016-09-30 | 2016-09-30 | A kind of fluid pressure type reversible lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107882820A (en) |
-
2016
- 2016-09-30 CN CN201610865735.XA patent/CN107882820A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180406 |
|
| WD01 | Invention patent application deemed withdrawn after publication |