CN202597320U - Pipe-explosion-preventing and self-locking oil cylinder - Google Patents
Pipe-explosion-preventing and self-locking oil cylinder Download PDFInfo
- Publication number
- CN202597320U CN202597320U CN 201220168039 CN201220168039U CN202597320U CN 202597320 U CN202597320 U CN 202597320U CN 201220168039 CN201220168039 CN 201220168039 CN 201220168039 U CN201220168039 U CN 201220168039U CN 202597320 U CN202597320 U CN 202597320U
- Authority
- CN
- China
- Prior art keywords
- hole
- guide
- main valve
- valve plug
- spring
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a pipe-explosion-preventing and self-locking oil cylinder which comprises a cylinder barrel, a front end cover, a back end cover, a piston and a piston rod. One end of the back end cover is provided with a thread plug-in mounting valve body and the end is provided with a through hole, wherein the inner upper portion of the thread plug-in mounting valve body is provided with a non-magnetic sleeve, the inner lower portion of the thread plug-in mounting valve body is provided with an armature, the center of the top of the armature is provided with a pilot spring hole in which a pilot spring is arranged, the inner upper portion of the non-magnetic sleeve is provided with a non-magnetic cover, coils are arranged on the outer sides of the non-magnetic sleeve and the non-magnetic cover, a valve pocket is arranged under the thread plug-in mounting valve body and in the through hole, a main valve core is arranged in a round column body on the upper portion in the valve pocket, a hollow chamber is arranged in the center in the main valve core, a pilot valve core is arranged in the main valve core and is connected with the lower portion of the armature, a main spring is arranged on the lower portion of the pilot valve core in penetrating mode, and an oil hole is arranged on the round column body on the upper portion of the valve pocket and corresponds to a hole II arranged in the main valve core and a branch passageway on the back end cover. The dumping oil cylinder has a locking function after an outer pipeline bursts, thereby avoiding safety accidents.
Description
Technical field
The present invention relates to a kind of hydraulic jack, particularly a kind of explosion stack self-locking oil cylinder.
Background technique
Existing sweeping machine, excavator etc. do not have explosion stack safety lock locking apparatus usually, thus when sweeping machine topple over the explosion of oil cylinder external oil pipe accident the time, can't carry out safe locking, thereby when operation or repair and maintenance, have security incident hidden danger.Equally, when the unexpected explosion of the outside pipeline of the support oil cylinder of excavator, can't carry out locking, have to exist to cause overturning or the hidden danger of other security incidents supporting leg.
Summary of the invention
The technical problem that the present invention will solve provides a kind of explosion stack self-locking oil cylinder, and this explosion stack self-locking oil cylinder externally can prevent the piston rod withdrawal after the oil pipe explosion, thereby avoids taking place security incident.
For solving the problems of the technologies described above, a kind of explosion stack self-locking oil cylinder of the present invention contains cylinder barrel, front cover, rear end cover, piston, piston rod; Front cover and rear end cover are separately positioned on the front-end and back-end of cylinder barrel, and piston is positioned at cylinder barrel, in the center hole that an end is arranged on the piston, the other end is installed on front cover of piston rod; Offer the rod chamber hydraulic fluid port near front cover on the cylinder barrel, rear end cover is provided with through hole, and this through hole interlinks through the rodless cavity of a subchannel and cylinder barrel; One end of the through hole that said rear end cover is provided with is provided with the thread cartridge valve body, and the central authorities of this thread cartridge valve body are provided with center hole, and the top of this center hole is provided with non-magnetosheath; Armature is equipped with in the interior bottom of this non-magnetosheath, and this armature can move in non-magnetosheath, and the center of top of this armature is provided with guide's spring eye; In this guide's spring eye guide's spring is housed, the internal upper part of said non-magnetosheath is provided with non-magnetic lid, and the outside of non-magnetosheath and non-magnetic lid is provided with coil; Locking nut is equipped with in the upper end of non-magnetic lid, and the below of thread cartridge valve body and the through hole that is positioned at said rear end cover are provided with valve pocket, and the inner chamber body of this valve pocket is the diameter of the diameter of divalence round platform column structure shape, its underpart Rotary-table less than top round platform cylinder; The end opening of bottom Rotary-table is the rodless cavity hydraulic fluid port in this valve pocket, in the valve pocket internal upper part Rotary-table main valve plug is housed, and the diameter of this main valve plug lower external face is less than the diameter of outer surface of upper; This main valve plug underpart is the cone table structure shape, and this cone table is arranged in the suitable for reading of said valve pocket bottom Rotary-table, and central authorities are provided with cavity in the said main valve plug; The bottom of this main valve plug is provided with hole I, and the bottom side face of this main valve plug is provided with hole II, and guide's spool is housed in this main valve plug; The middle part of this guide's spool is provided with boss; This boss is being axially arranged with fluting, and the valve point of this guide's spool is arranged in the hole I of said main valve plug bottom, and this guide's spool is connected with the bottom of armature; The top of this guide's spool is provided with hole III; This resistance hole III is connected with the end of the hole IV that armature is provided with, and the other end of hole IV is connected with guide's spring eye that armature is provided with, and the bottom of said guide's spool is coated with main spring; This main spring upper end withstands on the raised head face that is provided with in the middle part of this guide's spool; This main spring lower end withstands on the inner bottom part of said main valve plug, and the top round platform cylinder of said valve pocket is provided with oilhole, and this oilhole is corresponding with hole II and the subchannel on the said rear end cover that said main valve plug is provided with.
The inner of said piston rod is provided with buffer plunger, and said rear end cover is provided with and the corresponding buffer plunger of buffer plunger chamber, and the subchannel on the said rear end cover is provided with damper.
The [coefficient of of said main spring is littler than the [coefficient of of guide spring.
The diameter of hole II on the said main valve plug is littler than the diameter of said hole I.
Above-mentioned explosion stack self-locking oil cylinder is in operation process, and when the external oil pipe explosion made the unexpected oil-break of rodless cavity hydraulic fluid port, its valve point was pushed down the hole I of main valve plug bottom under the effect of guided missile spring formerly of guide's spool; The oilhole place fluid of valve pocket is higher in casing deadweight effect downforce; Pressure oil enters into the main valve plug cavity of resorption through via hole II, and gets into the valve pocket epicoele through guide's spool fluting, and the pressure of valve pocket epicoele, main valve plug cavity of resorption is equal to the pressure at the oilhole place of valve pocket; The oil pressure of valve pocket epicoele, main valve plug cavity of resorption is pressed in bottom Rotary-table in the valve pocket suitable for reading the cone table of main valve plug lower end; Close the passage of rodless cavity hydraulic fluid port, the interior fluid of cylinder barrel rodless cavity this moment can't let out, and has prevented the withdrawal of piston rod; Have the safe locking function, thereby avoided the security incident generation.
Description of drawings
Fig. 1 is the structural representation of a kind of explosion stack self-locking oil cylinder of the present invention.
Fig. 2 is the local structural representation that amplifies among Fig. 1.
1. locking nuts among the figure, 2. non-magnetic covers 3. coils, 4. guide's spring, 5. non-magnetosheath, 6. hole IV, 7. armature, 8. thread cartridge valve body; 9. hole III, 10. epicoele, 11. rear end covers, 12. main valve plugs, 13. main springs, 14. cavity of resorptions; 15. interior bottom Rotary-table, 16. valve pockets, 17. rodless cavity hydraulic fluid ports, 18. through holes, 19. hole I, 20. valves point; 21. hole II, 22. subchannels, 23. oilholes, 24. guide's spools, 25. front covers, 26. cylinder barrels; 27. the rod chamber hydraulic fluid port, 28. piston rods, 29. pistons, 30. buffer plungers, 31. dampers, 32. buffer plunger chambeies.
Embodiment
Among Fig. 1 and Fig. 2, a kind of explosion stack self-locking oil cylinder contains cylinder barrel 26, front cover 25, rear end cover 11, piston 29, piston rod 28.Front cover 25 and rear end cover 11 are separately positioned on the front-end and back-end of cylinder barrel 26.Piston 29 is positioned at cylinder barrel 26, and an end of piston rod 28 is arranged on the piston 29, the other end is installed in the center hole of front cover 25.Offer rod chamber hydraulic fluid port 27 on the cylinder barrel 26 near front cover 25.Rear end cover 11 is provided with through hole 18, and this through hole 18 interlinks through the rodless cavity of a subchannel 22 with cylinder barrel 26.One end of the through hole 18 that said rear end cover 11 is provided with is provided with thread cartridge valve body 8; The central authorities of this thread cartridge valve body 8 are provided with center hole; The top of this center hole is provided with non-magnetosheath 5, and armature 7 is equipped with in the interior bottom of this non-magnetosheath 5, and this armature 7 can move in non-magnetosheath 5.The center of top of this armature 7 is provided with guide's spring eye, in this guide's spring eye guide's spring 4 is housed.The internal upper part of said non-magnetosheath 5 is provided with non-magnetic lid 2, and non-magnetosheath 5 is provided with coil 3 with the outside of non-magnetic lid 2, and locking nut 1 is equipped with in the upper end of non-magnetic lid 2.The below of electromagnetic core 7 and the through hole 18 that is positioned at said rear end cover 11 are provided with valve pocket 16; The inner chamber body of this valve pocket 16 is the diameter of the diameter of divalence round platform column structure shape, its underpart Rotary-table 15 less than top round platform cylinder, and the end opening of bottom Rotary-table 15 is a rodless cavity hydraulic fluid port 17 in this valve pocket 16.In the valve pocket 16 internal upper part Rotary-tables main valve plug 12 is housed, the diameter of these main valve plug 12 lower external face is less than the diameter of outer surface of upper, and these main valve plug 12 underparts are the cone table structure shape, and this cone table is arranged in the suitable for reading of said valve pocket 16 bottom Rotary-tables 15.Central authorities are provided with cavity in the said main valve plug 12, and the bottom of this main valve plug 12 is provided with hole I19, and the bottom side face of this main valve plug 12 is provided with hole II21; In this main valve plug 12 guide's spool 24 is housed; The middle part of this guide's spool 24 is provided with boss, and this boss is being axially arranged with fluting, and the valve point 20 of this guide's spool 24 is arranged in the hole I19 of said main valve plug 12 bottoms; This guide's spool 24 is connected with the bottom of electromagnetic core 7; The top of this guide's spool 24 is provided with hole III9, and this hole III9 is connected with the end of the hole IV6 that electromagnetic core 7 is provided with, and the other end of hole IV6 is connected with guide's spring eye that electromagnetic core 7 is provided with.The bottom of said guide's spool 24 is coated with main spring 13, and these main spring 13 upper ends withstand on the raised head face that these guide's spool 24 middle parts are provided with, and these main spring 13 lower ends withstand on the inner bottom part of said main valve plug 12.The top round platform cylinder of said valve pocket 12 is provided with oilhole 23, and this oilhole 23 is corresponding with hole II21 and the subchannel 22 on the said rear end cover 11 that said main valve plug 12 is provided with.More steady in order to reset after the sweeping machine casing is toppled over, the inner of said piston rod 28 is provided with buffer plunger 30, and said rear end cover 11 is provided with and buffer plunger 30 corresponding buffer plunger chambeies 32, and the subchannel 22 of said rear end cover 11 is provided with damper 31.For further strengthening locking property, improving safety coefficient, the [coefficient of of said main spring 13 is littler than the [coefficient of of guide spring 4.For improving the unlatching performance of main valve plug 12, said hole II21 diameter is very little, and said hole I19 diameter is bigger than hole II21 diameter.Above-mentioned explosion stack self-locking oil cylinder in the normal operation process, coil 3 no electric circuits, only under the situation that piston normally returns, coil 3 is just switched on.When needs piston rod 28 stretches out; Its valve point 20 is pushed down the hole I19 of main valve plug 12 bottoms under guide's spool 24 effect of guided missile spring 4 formerly, and after rodless cavity hydraulic fluid port 17 got into hydraulic oil, rodless cavity hydraulic fluid port 17 hydraulic fluid port pressure raise; Hydraulic oil overcomes the elastic force of guide's spring 4; Promote main valve plug 12, upwards open together with guide's spool 24, hydraulic oil gets in the rodless cavity of cylinder barrel 26 through oil-through hole 23, subchannel 22; When the pressure of hydraulic oil generation can overcome the resistance of piston rod 28 ends, piston 29 moved piston rod 28 is stretched out.When 28 withdrawals of needs piston rod; Coil 3 energisings; Under the effect of electromagnetic force, armature 7 overcomes the elastic force of guide's spring 4 and drives guide's spool 24 and moves up, and the valve point 20 of guide's spool 24 leaves the hole I19 of main valve plug 12 bottoms; This moment, the guide via hole II21 that flows through got into cavity of resorption 14, flowed out to rodless cavity hydraulic fluid port 17 through via hole I19 again.Because hole II21 is very little; The pressure of epicoele 10, cavity of resorption 14 is far below oilhole 23 place's pressure; Therefore the pressure oil at oilhole 23 places promotes main valve plug 12 through the ring surface at main valve plug 12 middle parts is exerted pressure and moves upward; At this moment the passage of the rodless cavity hydraulic fluid port 17 of valve pocket 16 is opened, and fluid and rod chamber inner fluid in the rodless cavity of cylinder barrel 26 are got back in the fuel tank from rodless cavity hydraulic fluid port 17, thereby makes piston rod 28 withdrawals.Above-mentioned explosion stack self-locking oil cylinder is in operation process; When the external oil pipe explosion makes the unexpected oil-break of rodless cavity hydraulic fluid port 17; Push down the hole I19 of main valve plug 12 bottoms under guide's spool 24 effect of guided missile spring 4 formerly, the pressure oil at oilhole 23 places enters into cavity of resorption 14 through via hole II21, and gets into epicoeles 10 through guide's spool 24 flutings; And the pressure of epicoele 10, cavity of resorption 14 is equal to the pressure at oilhole 23 places; The oil pressure of epicoele 10, cavity of resorption 14 is pressed in bottom Rotary-tables 15 in the valve pocket 16 suitable for reading the cone table of main valve plug 12 lower ends, closes the passage of rodless cavity hydraulic fluid port 17, and the fluid in this moment cylinder barrel 26 rodless cavities can't let out; Thereby make the explosion stack self-locking oil cylinder externally have locking function after the oil pipe explosion, avoided the generation of security incident.
Claims (4)
1. an explosion stack self-locking oil cylinder contains cylinder barrel, front cover, rear end cover, piston, piston rod, and front cover and rear end cover are separately positioned on the front-end and back-end of cylinder barrel; Piston is positioned at cylinder barrel, in the center hole that an end is arranged on the piston, the other end is installed on front cover of piston rod, offers the rod chamber hydraulic fluid port near front cover on the cylinder barrel; Rear end cover is provided with through hole, and this through hole interlinks through the rodless cavity of a subchannel and cylinder barrel, it is characterized in that: an end of the through hole that said rear end cover is provided with is provided with the thread cartridge valve body; The central authorities of this thread cartridge valve body are provided with center hole, and the top of this center hole is provided with non-magnetosheath, and armature is equipped with in the interior bottom of this non-magnetosheath; This armature can move in non-magnetosheath, and the center of top of this armature is provided with guide's spring eye, in this guide's spring eye guide's spring is housed; The internal upper part of said non-magnetosheath is provided with non-magnetic lid, and the outside of non-magnetosheath and non-magnetic lid is provided with coil, and locking nut is equipped with in the upper end of non-magnetic lid; The below of thread cartridge valve body and the through hole that is positioned at said rear end cover are provided with valve pocket, and the inner chamber body of this valve pocket is the diameter of the diameter of divalence round platform column structure shape, its underpart Rotary-table less than top round platform cylinder, and the end opening of bottom Rotary-table is the rodless cavity hydraulic fluid port in this valve pocket; In the valve pocket internal upper part Rotary-table main valve plug is housed, the diameter of this main valve plug lower external face is less than the diameter of outer surface of upper, and this main valve plug underpart is the cone table structure shape; This cone table is arranged in the suitable for reading of said valve pocket bottom Rotary-table, and central authorities are provided with cavity in the said main valve plug, and the bottom of this main valve plug is provided with hole I; The bottom side face of this main valve plug is provided with hole II; Guide's spool is housed in this main valve plug, and the middle part of this guide's spool is provided with boss, and this boss is being axially arranged with fluting; The valve point of this guide's spool is arranged in the hole I of said main valve plug bottom; This guide's spool is connected with the bottom of armature, and the top of this guide's spool is provided with hole III, and this resistance hole III is connected with the end of the hole IV that armature is provided with; The other end of hole IV is connected with guide's spring eye that armature is provided with; The bottom of said guide's spool is coated with main spring, and this main spring upper end withstands on the raised head face that is provided with in the middle part of this guide's spool, and this main spring lower end withstands on the inner bottom part of said main valve plug; The top round platform cylinder of said valve pocket is provided with oilhole, and this oilhole is corresponding with hole II and the subchannel on the said rear end cover that said main valve plug is provided with.
2. a kind of explosion stack self-locking oil cylinder according to claim 1; It is characterized in that: the inner of said piston rod is provided with buffer plunger; Said rear end cover is provided with and the corresponding buffer plunger of buffer plunger chamber, and the subchannel on the said rear end cover is provided with damper.
3. a kind of explosion stack self-locking oil cylinder according to claim 1, it is characterized in that: the [coefficient of of said main spring is littler than the [coefficient of of guide spring.
4. a kind of explosion stack self-locking oil cylinder according to claim 1 is characterized in that: the diameter of the hole II on the said main valve plug is littler than the diameter of said hole I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168039 CN202597320U (en) | 2012-04-18 | 2012-04-18 | Pipe-explosion-preventing and self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220168039 CN202597320U (en) | 2012-04-18 | 2012-04-18 | Pipe-explosion-preventing and self-locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597320U true CN202597320U (en) | 2012-12-12 |
Family
ID=47314867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220168039 Expired - Lifetime CN202597320U (en) | 2012-04-18 | 2012-04-18 | Pipe-explosion-preventing and self-locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597320U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628462A (en) * | 2012-04-18 | 2012-08-08 | 江苏悦达专用车有限公司 | Box toppling cylinder of sweeping machine |
| CN103032410A (en) * | 2012-12-26 | 2013-04-10 | 清华大学 | Electromagnetic self-locking air cylinder |
| CN106762945A (en) * | 2016-12-29 | 2017-05-31 | 浙江科力车辆控制系统有限公司 | Explosion proof joint component and its elevating ram |
| CN110332174A (en) * | 2019-07-24 | 2019-10-15 | 韩国昊 | A kind of mechanical self-latching cylinder |
-
2012
- 2012-04-18 CN CN 201220168039 patent/CN202597320U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628462A (en) * | 2012-04-18 | 2012-08-08 | 江苏悦达专用车有限公司 | Box toppling cylinder of sweeping machine |
| CN103032410A (en) * | 2012-12-26 | 2013-04-10 | 清华大学 | Electromagnetic self-locking air cylinder |
| CN106762945A (en) * | 2016-12-29 | 2017-05-31 | 浙江科力车辆控制系统有限公司 | Explosion proof joint component and its elevating ram |
| CN106762945B (en) * | 2016-12-29 | 2019-04-12 | 浙江科力车辆控制系统有限公司 | Explosion proof joint component and its elevating ram |
| CN110332174A (en) * | 2019-07-24 | 2019-10-15 | 韩国昊 | A kind of mechanical self-latching cylinder |
| CN110332174B (en) * | 2019-07-24 | 2020-09-29 | 济南派沃工程机械有限公司 | Mechanical self-locking cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202597320U (en) | Pipe-explosion-preventing and self-locking oil cylinder | |
| CN105874238A (en) | Shock absorber | |
| CN202515391U (en) | Pressure-limiting exhaust device for electric pressure cooker | |
| CN107012867B (en) | A kind of hydraulic pile hammer | |
| CN107631064B (en) | It can be used for the ratio one-way flow valves of low-load | |
| CN107461374A (en) | A kind of undercarriage control pressurized strut hydraulic control valve | |
| CN108105192B (en) | A kind of buffer-braking valve | |
| CN102628462A (en) | Box toppling cylinder of sweeping machine | |
| CN105201942B (en) | Balanced valve and autocrane | |
| CN202595683U (en) | Road sweeper | |
| KR101158631B1 (en) | Dual fuel injection valve | |
| CN211144986U (en) | A piston rod dropout prevention means for combination cylinder | |
| CN104315230A (en) | Forced pilot-operated type water-pressure electromagnetic switch valve with pilot filter | |
| CN208750401U (en) | It is a kind of applied to the anti-filing gun filled in self-closing smart valve | |
| CN203362668U (en) | Balance valve of dynamic load differential pressure protection and flow pressure air chamber compensation | |
| CN106439170A (en) | Electromagnet for variable valve timing system of automobile engine | |
| CN205381897U (en) | Two -way hydraulic jack | |
| CN108843642A (en) | A kind of solenoid valve for movable arm cylinder of excavator | |
| CN201433066Y (en) | Pipeline crack prevention closed type hydraulic system of winding motor | |
| CN204457552U (en) | Hydraulic continuous bumper jar | |
| TWI714333B (en) | Oil return valve group with multi-stage throttling control | |
| CN201401391Y (en) | Hydrocylinder unloading device | |
| CN201588832U (en) | Explosion-proof tube self-locking oil cylinder | |
| CN201474892U (en) | Manual hydraulic pump | |
| CN207364374U (en) | A kind of self-closing spool of light push type delay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
|
| CX01 | Expiry of patent term |