CN103817970B - A kind of bent axle overload protection arrangement of hydraulic press - Google Patents
A kind of bent axle overload protection arrangement of hydraulic press Download PDFInfo
- Publication number
- CN103817970B CN103817970B CN201310654630.6A CN201310654630A CN103817970B CN 103817970 B CN103817970 B CN 103817970B CN 201310654630 A CN201310654630 A CN 201310654630A CN 103817970 B CN103817970 B CN 103817970B
- Authority
- CN
- China
- Prior art keywords
- guide pillar
- hydraulic press
- bent axle
- overload protection
- housing
- 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.)
- Active
Links
Abstract
The invention discloses a kind of bent axle overload protection arrangement of hydraulic press, comprise housing, in housing, be provided with the cavity of accommodating guide pillar, guide pillar plug is installed in guide pillar, guide pillar one end is connected with the oil outlet on housing, and the sidewall of guide pillar is communicated with the fuel feed hole on housing, and the guide pillar other end is provided with guide pillar lid, between guide pillar lid and guide pillar plug, be provided with elastomer block, guide pillar is provided with sealing surface in order to seal mutually with guide pillar near the end of oil outlet beyond the Great Wall; On fuel feed hole, also connect a pressure release oil circuit, pressure release oil circuit is communicated to one end of the close guide pillar lid of guide pillar plug, is also communicated to a relief valve assembly of being located in housing sidewall. The present invention is in the time that oil pressure pressure is greater than the setting value of relief valve assembly, and the off-load of can be fast instantaneous, large flow, has protected the bent axle of hydraulic press injury-free effectively, has ensured the normal use of hydraulic press, has reduced maintenance cost, has improved production efficiency.
Description
Technical field
The present invention relates to a kind of oil pressure overload protection arrangement, while relating in particular to the bent axle overload of hydraulic press,Need the pressure release of quick, instantaneous, large flow (1 liter/second～5 liters/second), could effectively protect songAxle is not deformed, impaired, even fracture, is specifically related to a kind of bent axle overload protection dress of hydraulic pressPut.
Background technology
Existing oil pressure overload protection (being relief valve) is the only oil in 0.1 liter/second to flowPressure energy plays fast, instantaneous pressure relief device; Bent axle protection field at hydraulic press just needs oneFast, the pressure relief device of instantaneous, large flow (1 liter/second～5 liters/second), protect bent axle, playThe effect of overload protection.
Like product on market is just contrary with the application's oil-out and oiler, and sealing is with leadingPlunger and valve base sealing, this is sealed into steel sealing, and guide pillar is equipped with die springs, die springs beyond the Great WallAdjustment screw is equipped with in upper end, when different platform needs different pressures, regulates mould by adjusting screwThe elastic force of spring, reaches sealing effectiveness. Excessive when oil pressure, promote guide pillar plug and move backward, oil pressure fromAir gap leakage between guide pillar plug and valve gap, when pressure is less than spring force, spring promotes to lead plunger return,Contact and play sealing effectiveness with valve seat.
There is following problem in this relief valve:
1, regulate inaccurately, carry out control spring bullet by adjusting the decrement that screw adjusts die springsPower, can not accurately know recruitment or the reduction of spring force, can not effectively coordinate board to use,The excessive effect that can not play quick pressure releasing of elastic force, the too small poor sealing that causes of elastic force, not yet reachesWhen pressure release pressure, leak.
2, adjust inconvenience, repeatedly adjust just and can meet customer need, and range of application is little, machineExcessive or too small sealing or the effect of pressure release of all can not playing of platform.
3, endoporus processing is difficult for, and and guide pillar plug, valve seat quality of fit high, be difficult to produce a desired effect,In easily producing, leak phenomenon.
4, part is many, processing, assembling, maintenance inconvenience.
Summary of the invention
(1) technical problem that will solve
The invention provides a kind of bent axle overload protection arrangement of hydraulic press, it is (1 liter/second of large flow～5 liters/second) state under, oil pressure when overload, can play off-load quick, instantaneous, large flow;Also can carry out at any time manual off-load, effectively protected the bent axle of hydraulic press injury-free simultaneously,Ensure the normal use of hydraulic press, reduced maintenance cost, improved production efficiency.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of bent axle overload protection arrangement of hydraulic press,Comprise housing, in described housing, be provided with the cavity of accommodating guide pillar, guide pillar plug is installed in described guide pillar,Described guide pillar one end is connected with the oil outlet on described housing, on the sidewall of described guide pillar and described housingFuel feed hole be communicated with, the described guide pillar other end is provided with guide pillar lid, between described guide pillar lid and guide pillar plug, establishesFlexible, described guide pillar is provided with sealing surface in order to seal mutually with guide pillar near the end of oil outlet beyond the Great Wall;On described fuel feed hole, also connect a pressure release oil circuit, described pressure release oil circuit is communicated to the close guide pillar of guide pillar plugOne end of lid, is also communicated to a relief valve assembly of being located in housing sidewall.
As preferably, described guide pillar is provided with endoporus, described elasticity near one end of guide pillar lid beyond the Great WallPiece is installed in endoporus, and described diameter of bore is identical with the sealing surface diameter on guide pillar.
As preferably, described pressure release oil circuit is also communicated to a manual pressure release assembly, describedly manually lets outPress assembly to pass through solenoid control.
As preferably, the sidewall of described guide pillar plug is provided with wear ring.
As preferably, described guide pillar and the junction of oil outlet and with the punishment that is connected of guide pillar lidBe not provided with seal, described seal comprises O type ring and the back bracket ring of mutual combination.
As preferably, described elastomer block is spring.
(3) beneficial effect
The present invention is compared to prior art, and it has following beneficial effect: the present invention is at oil pressure pressureWhile being greater than the setting value of relief valve assembly, the off-load of can be fast instantaneous, large flow, has protected effectivelyThe bent axle of hydraulic press is injury-free, has ensured the normal use of hydraulic press, has reduced maintenance cost,Improved production efficiency, and gone for the punch press of different model, pressure unloading value can be passed throughRelief valve assembly adjusts, convenient, accurate.
Brief description of the drawings
Fig. 1 is the cross section structure figure of the bent axle overload protection arrangement of hydraulic press of the present invention.
Fig. 2 is the stereogram of the bent axle overload protection arrangement of hydraulic press of the present invention.
Fig. 3 is the front view of the bent axle overload protection arrangement of hydraulic press of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1 to Figure 3, a kind of bent axle overload protection arrangement of hydraulic press, comprises housing,Described housing comprises interconnective body 1 and body cap 7, in described body 1, is provided with accommodating leadingThe cavity of post 2, is provided with guide pillar plug 3 in described guide pillar 2, described guide pillar 2 one end and described body 1On oil outlet 12 be connected, the sidewall of described guide pillar 2 is communicated with the fuel feed hole 11 on described body 1,Described guide pillar 2 other ends are provided with guide pillar lid 9, and establish the one end near guide pillar lid 9 on described guide pillar plug 3There is endoporus, between described endoporus and guide pillar lid 9, be provided with spring 8, close fuel-displaced on described guide pillar plug 3The end in hole 12 is provided with sealing surface in order to seal mutually with guide pillar 2, on described diameter of bore and guide pillar 2Sealing surface diameter is identical. On described fuel feed hole 11, also connect a pressure release oil circuit 13, described pressure release oil circuit13 are communicated to the endoporus of guide pillar plug 3 by the through hole on guide pillar lid 9, are also communicated to one and are located at body capRelief valve assembly 10 on 7, relief valve assembly 10 is assemblied on body cap 7, and it has adjustable screw to adjustJoint pressure unloading, in the time that oil pressure exceedes setting value, the action of relief valve assembly is opened and release, is being less thanWhen setting value, relief valve assembly is failure to actuate, in closed condition.
Described pressure release oil circuit 13 is also communicated to a manual pressure release assembly 6, and described manual pressure release assembly 6 is pacifiedBe loaded on the sidewall of body 1 and body cap 7, described manual pressure release assembly 6 is controlled by magnetic valve 14,Manually, after pressure relief assembly 6 connected electromagnetic valves, link to operating desk, can directly control hand by operating deskMoving pressure relief assembly 6 (release at any time); Manually pressure relief assembly 6 is that oil pressure is controlled by magnetic valve 14The relief valve of system is directly discharged to oil outlet 12.
The sidewall of described guide pillar plug 3 is provided with wear ring 5, because guide pillar plug need to move back and forth,Setting by wear ring can reduce friction. Described guide pillar 2 and the junction of oil outlet 12 and with leadThe junction of post lid 9 is respectively equipped with seal 4, described seal comprise mutual combination O type ring andBack bracket ring.
Hydraulic oil enters from the fuel feed hole 11 of body, then divide two loops, and a road enters guide pillar 2In cavity, the pressure release oil circuit 13 that a route is located in body 1 and body cap 7 enters, and flows to guide pillar plug3 endoporus and relief valve assembly 10; Due to the annular of guide pillar plug 3 endoporus areas and other end guide pillar plug 3Part area is identical, and oil pressure pressure-acting is at guide pillar plug 3 endoporus and other end guide pillar plug 3Annular section is also identical, so the pressure at guide pillar plug 3 two ends is balances. Guide pillar plug 3Endoporus is equipped with spring 8, and therefore the pressure on endoporus top is greater than the pressure at lower seal face place, causes and leadsThe sealing of post 2 and guide pillar plug 3, sealing is rigid seal;
Operation principle of the present invention is: before the bent axle overload protection arrangement work of hydraulic press, in advanceSet the pressure unloading of relief valve assembly 10, be then installed to the bent axle place (fuel feed hole of hydraulic pressPlace is connected with punch press oil pressure); In normal operation, each part of the present invention and assembly are in quietOnly state (being failure to actuate, poised state);
When the descending slide block of hydraulic press occur snap gauge or mode transfer height too low, occurring that bent axle is stuck can notWhen revolution, the punch press oil pressure place being connected with fuel feed hole 11 of the present invention will produce large flow, instantaneousThe hydraulic oil of high pressure (exceeding the pressure unloading that relief valve assembly 10 is set) is from fuel feed hole of the present invention11 enter, and break the balance of inside of the present invention, and first relief valve assembly 10 moves off-load, makes guide pillarFill in 3 upper and lower pressure imbalances, cause guide pillar plug 3 to move upwards, guide pillar plug 3 and guide pillar 2 itBetween sealing open, make large flow, instantaneous high pressure (exceeding the pressure unloading that relief valve assembly 10 is set)Hydraulic oil from fuel feed hole 11 of the present invention fast instantaneous, large flow, be directly discharged to oil outlet 12Off-load, plays large flow, quick instantaneous overload protective function, thereby has effectively protected oil pressure punchingThe bent axle of bed is not damaged, has improved production efficiency, has reduced maintenance cost.
The above is only the preferred embodiment of the present invention, it should be pointed out that for the artThose of ordinary skill, not departing under the prerequisite of the technology of the present invention principle, can also make someImprovements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a bent axle overload protection arrangement for hydraulic press, comprises housing, it is characterized in that:In described housing, be provided with the cavity of accommodating guide pillar, guide pillar plug be installed in described guide pillar, described in leadPost one end is connected with the oil outlet on described housing, on the sidewall of described guide pillar and described housingFuel feed hole is communicated with, and the described guide pillar other end is provided with guide pillar lid, between described guide pillar lid and guide pillar plugBe provided with elastomer block, described guide pillar beyond the Great Wall near the end of oil outlet be provided with sealing surface in order to guide pillarSealing mutually; On described fuel feed hole, also connect a pressure release oil circuit, described pressure release oil circuit is communicated to guide pillarOne end of the close guide pillar lid of plug, is also communicated to a relief valve assembly of being located in housing sidewall.
2. the bent axle overload protection arrangement of hydraulic press according to claim 1, its spyLevy and be: described guide pillar is provided with endoporus near one end of guide pillar lid beyond the Great Wall, described elastomer block is installedIn endoporus, described diameter of bore is identical with the sealing surface diameter on guide pillar.
3. the bent axle overload protection arrangement of hydraulic press according to claim 1, its spyLevy and be: described pressure release oil circuit is also communicated to a manual pressure release assembly, described manual pressure release assemblyPass through solenoid control.
4. the bent axle overload protection arrangement of hydraulic press according to claim 1, its spyLevy and be: the sidewall of described guide pillar plug is provided with wear ring.
5. the bent axle overload protection arrangement of hydraulic press according to claim 1, its spyLevy and be: the junction of described guide pillar and oil outlet and being respectively equipped with the junction of guide pillar lidSeal, described seal comprises O type ring and the back bracket ring of mutual combination.
6. according to the bent axle overload protection of the hydraulic press described in claim 1 to 5 any oneDevice, is characterized in that: described elastomer block is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654630.6A CN103817970B (en) | 2013-12-05 | 2013-12-05 | A kind of bent axle overload protection arrangement of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654630.6A CN103817970B (en) | 2013-12-05 | 2013-12-05 | A kind of bent axle overload protection arrangement of hydraulic press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103817970A CN103817970A (en) | 2014-05-28 |
| CN103817970B true CN103817970B (en) | 2016-05-04 |
Family
ID=50753389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310654630.6A Active CN103817970B (en) | 2013-12-05 | 2013-12-05 | A kind of bent axle overload protection arrangement of hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103817970B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532962A1 (en) * | 1995-09-07 | 1997-03-13 | Ulrich Keller | Hydraulic overload control valve, esp. on presses |
| DE19709746C1 (en) * | 1997-03-10 | 1998-11-19 | Fraunhofer Ges Forschung | Mechanical press overload safety valve |
| CN2720175Y (en) * | 2004-08-25 | 2005-08-24 | 大大科技(宁国)有限公司 | Super-thin single-acting oil tank |
| CN101038225A (en) * | 2007-02-09 | 2007-09-19 | 严培义 | Powder forming machine pressure measuring oil cylinder mechanism |
| CN201302018Y (en) * | 2008-11-12 | 2009-09-02 | 富伟精密机械(宁波)有限公司 | Swivel joint |
| CN201525838U (en) * | 2009-09-21 | 2010-07-14 | 高宾 | Oil press preventing overpressure roof fall |
| CN102582104A (en) * | 2012-02-12 | 2012-07-18 | 常德市恒德机械制造有限公司 | Vertical microporous oil press and control device thereof |
| CN103344499A (en) * | 2013-07-02 | 2013-10-09 | 上海飞机制造有限公司 | Test equipment for pressure and airtightness of fuselage of passenger plane |
| CN203257781U (en) * | 2013-05-17 | 2013-10-30 | 上海七洋液压机械有限公司 | Balance valve for hydraulic system |
| CN203567226U (en) * | 2013-12-05 | 2014-04-30 | 富伟精密机械(宁波)有限公司 | Crankshaft overload protection device of oil pressure punching machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101159647B1 (en) * | 2012-04-09 | 2012-06-26 | 주식회사 해운테크 | Valve for protecting overpressure |
-
2013
- 2013-12-05 CN CN201310654630.6A patent/CN103817970B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532962A1 (en) * | 1995-09-07 | 1997-03-13 | Ulrich Keller | Hydraulic overload control valve, esp. on presses |
| DE19709746C1 (en) * | 1997-03-10 | 1998-11-19 | Fraunhofer Ges Forschung | Mechanical press overload safety valve |
| CN2720175Y (en) * | 2004-08-25 | 2005-08-24 | 大大科技(宁国)有限公司 | Super-thin single-acting oil tank |
| CN101038225A (en) * | 2007-02-09 | 2007-09-19 | 严培义 | Powder forming machine pressure measuring oil cylinder mechanism |
| CN201302018Y (en) * | 2008-11-12 | 2009-09-02 | 富伟精密机械(宁波)有限公司 | Swivel joint |
| CN201525838U (en) * | 2009-09-21 | 2010-07-14 | 高宾 | Oil press preventing overpressure roof fall |
| CN102582104A (en) * | 2012-02-12 | 2012-07-18 | 常德市恒德机械制造有限公司 | Vertical microporous oil press and control device thereof |
| CN203257781U (en) * | 2013-05-17 | 2013-10-30 | 上海七洋液压机械有限公司 | Balance valve for hydraulic system |
| CN103344499A (en) * | 2013-07-02 | 2013-10-09 | 上海飞机制造有限公司 | Test equipment for pressure and airtightness of fuselage of passenger plane |
| CN203567226U (en) * | 2013-12-05 | 2014-04-30 | 富伟精密机械(宁波)有限公司 | Crankshaft overload protection device of oil pressure punching machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103817970A (en) | 2014-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102709505A (en) | Adjustable explosion relief valve of storage battery | |
| CN203926201U (en) | Load-sensitive pressure cut off control valve | |
| CN102330561A (en) | Method for controlling protective plate | |
| CN108331948B (en) | Pilot-operated type pipe explosion shutoff valve and control method | |
| CN103817970B (en) | A kind of bent axle overload protection arrangement of hydraulic press | |
| CN203567226U (en) | Crankshaft overload protection device of oil pressure punching machine | |
| EP2014963A3 (en) | A pressure relief valve and a method for regulating pressure | |
| CN203322413U (en) | Two-stage pressure unloading valve | |
| CN205938031U (en) | Piston type double directional pressure relief valve with adjustable | |
| CN202597334U (en) | Buffering safety valve | |
| CN202500847U (en) | Overload valve | |
| CN102979935A (en) | Automatic pressure releasing valve | |
| CN202937845U (en) | Check valve device | |
| CN202972062U (en) | Direct-flow piston type adjustable pressure relief valve | |
| CN201851758U (en) | Pressure differential piston sealing gas cylinder valve | |
| CN204704184U (en) | Relief valve | |
| CN103742690A (en) | One-way overflow valve | |
| CN204213416U (en) | The pressurization opening formula one-way valve of the movable valve plate of band | |
| CN205908548U (en) | Prevent superpressure relief pressure valve | |
| CN204003722U (en) | A kind of relief valve | |
| CN203272313U (en) | Multifunctional hydraulic device | |
| CN106051243A (en) | Quick response safety valve adopting nonlinear regulating spring | |
| CN210218816U (en) | Novel pressure-maintaining pressure reducing valve | |
| CN201344293Y (en) | Flow control valve for tire shifter | |
| CN201934109U (en) | Ultra-large-flow safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |