CN104235120A - Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine - Google Patents
Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine Download PDFInfo
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- CN104235120A CN104235120A CN201410409123.0A CN201410409123A CN104235120A CN 104235120 A CN104235120 A CN 104235120A CN 201410409123 A CN201410409123 A CN 201410409123A CN 104235120 A CN104235120 A CN 104235120A
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- emergency unloading
- emergency
- valve seat
- valve
- lock body
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Abstract
The invention discloses a hydraulic lock with an emergency unloading function for rescue recovery equipment of a large-sized track maintenance machine. The hydraulic lock comprises a lock body, wherein a sliding valve is arranged in the lock body; an upper oil cavity where the sliding valve is located is communicated with an upper quick joint, and a lower oil cavity where the sliding valve is located is communicated with a lower quick joint; a one-way valve seat is arranged in the lock body at the lower end of the sliding valve; a one-way valve steel ball is arranged on the upper opening part of the one-way valve seat. The hydraulic lock is characterized by also comprising an emergency unloading valve arranged in the lock body, wherein the emergency unloading valve is structured in a way that an emergency unloading joint is arranged in the lock body, an emergency unloading valve seat is arranged in the lock body on the lower opening part of the one-way valve seat, an emergency unloading valve ejector rod is arranged in the emergency unloading valve seat, an unloading valve steel ball is arranged between the upper opening part of the emergency unloading valve seat and the emergency unloading valve ejector rod, and the lower opening part of the one-way valve seat can be communicated with or separated from an oil passage of the emergency unloading joint by virtue of the unloading valve steel ball. The hydraulic lock has the advantages of simple structure, small size, reliable operation, convenience in use, safety, applicability and the like.
Description
Technical field
The present invention relates to hydraulic element, is a kind of large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function.
Background technique
Existing one-way hydraulic lock forms primarily of lock body, guiding valve, one-way valve seat, one-way valve, upper fast interface and lower fast interface.The function that it has is: when the oil transportation oil pipe be connected with power hydraulic cylinder occurs to burst, the one-way valve opens of one-way hydraulic lock, the pressure oil of power hydraulic cylinder cavity of resorption is made to get back to one-way valve seat fast, by the path blockade of power hydraulic cylinder cavity of resorption and lower fast interface, namely realize hydraulic pressure locking, cause accident to occur to ensure power hydraulic cylinder to fall suddenly.But existing one-way hydraulic lock does not have when the casing wall of power hydraulic cylinder is because pulling or Sealing damage, occurs that in cylinder, upper and lower chamber is altered oil and makes the pressure oil unloading function of power hydraulic cylinder cavity of resorption.
During the locomotive generation derailment accident that trunk railway travels, need railway large-scale maintain road to rescue mechanical emergency management and rescue, usual railway large-scale maintain road rescue machinery adopts three grades of power hydraulic cylinder jacking accident vehicles to carry out rerail operation.But, the one-way hydraulic lock used due to existing rescue machinery hydraulic system only has hydraulic pressure blocking function, when power hydraulic cylinder occurs that casing wall is because pulling or Sealing damage, in cylinder upper and lower chamber alter oil cause equipment cannot normal operation time, be badly in need of being expelled to fuel tank to the pressure oil emergency unloading of power hydraulic cylinder cavity of resorption, power hydraulic cylinder is declined so that take out from accident vehicle, guarantees job safety.
Summary of the invention
The object of the invention is, overcome the deficiencies in the prior art, provide a kind of structure simple, volume is little, reliable in action, easy to use, the safe and applicable large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function.
Realizing the technological scheme that the object of the invention adopts is: a kind of large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function, it comprises lock body, in lock body, guiding valve is set, the upper oil cavitie at guiding valve place is communicated with upper fast interface, the lower oil cavitie at guiding valve place is communicated with lower fast interface, one-way valve seat is provided with at the lock body being positioned at guiding valve lower end, one-way valve steel ball is equipped with at one-way valve seat upper oral part, it is characterized in that, also be included in lock body and be provided with emergency unloading valve, the structure of described emergency unloading valve is, emergency unloading interface is provided with in lock body, emergency unloading valve seat is provided with at the lock body being positioned at one-way valve seat infraoral, emergency unloading valve push rod is provided with in emergency unloading valve seat, unloading valve steel ball is equipped with between the upper oral part and emergency unloading valve push rod of emergency unloading valve seat, unloading valve steel ball can make one-way valve seat infraoral be communicated with emergency unloading interface oil circuit or disconnect.
The large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function of the present invention, owing to being provided with emergency unloading valve in lock body, when power hydraulic cylinder occurs that casing wall is because pulling or Sealing damage, on in cylinder, cavity of resorption alter oil cause equipment cannot normal operation time, by being rotated down emergency unloading valve push rod counterclockwise, make unloading valve steel ball drop, the unloading valve steel ball fallen makes one-way valve seat infraoral be communicated with emergency unloading interface oil circuit, the pressure oil emergency unloading of power hydraulic cylinder cavity of resorption is made to be expelled to fuel tank, power hydraulic cylinder is declined so that take out from accident vehicle.There is structure simple, the advantages such as volume is little, reliable in action, easy to use, safe and applicable.
Accompanying drawing explanation
Fig. 1 is the large-scale maintenance machinery rescue re-railing equipment of the present invention hydraulic lock structure cross-sectional schematic with emergency unloading function;
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1.
In figure: 1 guiding valve, 2 lock bodies, 3 one-way valve seats, 4 one-way valve steel balls, 5 one-way valve seats, 6 unloading valve steel balls, 6 draining valves, 7 emergency unloading valve push rods, 8 emergency unloading interfaces, 9 times fast interfaces, fast interface on 10,11 emergency unloadings.
Embodiment
The invention will be further described to utilize drawings and Examples below.
See figures.1.and.2, the large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function of the present invention, adopts the hydraulic lock of prior art.Hydraulic lock comprises lock body 2, in lock body 2, arrange guiding valve 1, the upper oil cavitie at guiding valve 1 place is communicated with upper fast interface 10, and the lower oil cavitie at guiding valve 1 place is communicated with lower fast interface 9, be provided with one-way valve seat 5 at the lock body 2 being positioned at guiding valve 1 lower end, be equipped with one-way valve steel ball 4 at one-way valve seat 5 upper oral part.Also be included in lock body 2 and be provided with emergency unloading valve.The structure of described emergency unloading valve is, emergency unloading interface 8 is provided with in lock body 2, emergency unloading valve seat 11 is provided with at the lock body 2 being positioned at one-way valve seat 3 infraoral, emergency unloading valve push rod 7 is provided with in emergency unloading valve seat 11, between the upper oral part and emergency unloading valve push rod 7 of emergency unloading valve seat 11, be equipped with unloading valve steel ball 6, unloading valve steel ball 6 can make one-way valve seat 4 infraoral be communicated with emergency unloading interface 8 oil circuit or disconnect.
When power hydraulic cylinder Sealing occurs damaged, or power hydraulic cylinder piston goes wrong and causes power hydraulic cylinder upper and lower chamber string oil, occur that oil cylinder does not rise not fall, when the power hydraulic cylinder under accident vehicle cannot be shifted out, first the rubber hose coupling of lower fast interface 9 is pulled up, be connected on emergency unloading interface 8, then, unscrew emergency unloading valve push rod 7 downwards counterclockwise lentamente, under accident vehicle Action of Gravity Field, the pressure oil of power hydraulic cylinder cavity of resorption makes the upper oral part of one-way valve steel ball 4 closing one-way valve seat 3; Open the infraoral of unloading valve steel ball 6 and one-way valve seat 5, oil is flow back to fuel tank through emergency unloading interface 8 and oil delivery hose oil by oil.After the piston of power hydraulic cylinder falls to no-load, just faulty power oil hydraulic cylinder can be taken out.
The large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function of the present invention proves through practical application: owing to adding emergency unloading valve, fill up no matter single-direction and dual-direction hydraulic lock hydraulic lock after power hydraulic cylinder breaks down only has blocking function, and do not made the blank of the oily emergency unloading function of power hydraulic cylinder cavity of resorption.Thoroughly solve in rescue operations the difficult problem cannot taking out faulty power oil hydraulic cylinder under accident vehicle, it also avoid because oil cylinder in rescue aid breaks down simultaneously and cause the serious consequence of expansion accident.
Claims (1)
1. a large-scale maintenance machinery rescue re-railing equipment hydraulic lock with emergency unloading function, it comprises lock body, in lock body, guiding valve is set, the upper oil cavitie at guiding valve place is communicated with upper fast interface, the lower oil cavitie at guiding valve place is communicated with lower fast interface, one-way valve seat is provided with at the lock body being positioned at guiding valve lower end, one-way valve steel ball is equipped with at one-way valve seat upper oral part, it is characterized in that, also be included in lock body and be provided with emergency unloading valve, the structure of described emergency unloading valve is, emergency unloading interface is provided with in lock body, emergency unloading valve seat is provided with at the lock body being positioned at one-way valve seat infraoral, emergency unloading valve push rod is provided with in emergency unloading valve seat, unloading valve steel ball is equipped with between the upper oral part and emergency unloading valve push rod of emergency unloading valve seat, unloading valve steel ball can make one-way valve seat infraoral be communicated with emergency unloading interface oil circuit or disconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409123.0A CN104235120A (en) | 2014-08-20 | 2014-08-20 | Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409123.0A CN104235120A (en) | 2014-08-20 | 2014-08-20 | Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104235120A true CN104235120A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410409123.0A Pending CN104235120A (en) | 2014-08-20 | 2014-08-20 | Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235120A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036558U (en) * | 1988-08-01 | 1989-04-26 | 唐寿元 | One-way hydraulic lock |
| EP0466582A1 (en) * | 1990-07-13 | 1992-01-15 | Kabushiki Kaisha Kosmek | Pressure oil supply/discharge circuit and valve device for use in said circuit |
| CN101737536A (en) * | 2009-12-31 | 2010-06-16 | 山西三水银河科技有限公司 | Integrated extra-high pressure unloading valve |
| CN201794840U (en) * | 2009-09-02 | 2011-04-13 | 烟台大海机械制造有限公司 | Unloading bidirectional oil way self-locking valve |
| CN201810598U (en) * | 2010-09-26 | 2011-04-27 | 四川长江液压件有限责任公司 | Hydraulic one-way lock for crane descending valve |
| CN204025236U (en) * | 2014-08-20 | 2014-12-17 | 吉林市祥隆铁路救援技术开发有限公司 | The hydraulic lock with emergency unloading function for large-scale maintenance machinery rescue re-railing equipment |
-
2014
- 2014-08-20 CN CN201410409123.0A patent/CN104235120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036558U (en) * | 1988-08-01 | 1989-04-26 | 唐寿元 | One-way hydraulic lock |
| EP0466582A1 (en) * | 1990-07-13 | 1992-01-15 | Kabushiki Kaisha Kosmek | Pressure oil supply/discharge circuit and valve device for use in said circuit |
| CN201794840U (en) * | 2009-09-02 | 2011-04-13 | 烟台大海机械制造有限公司 | Unloading bidirectional oil way self-locking valve |
| CN101737536A (en) * | 2009-12-31 | 2010-06-16 | 山西三水银河科技有限公司 | Integrated extra-high pressure unloading valve |
| CN201810598U (en) * | 2010-09-26 | 2011-04-27 | 四川长江液压件有限责任公司 | Hydraulic one-way lock for crane descending valve |
| CN204025236U (en) * | 2014-08-20 | 2014-12-17 | 吉林市祥隆铁路救援技术开发有限公司 | The hydraulic lock with emergency unloading function for large-scale maintenance machinery rescue re-railing equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |