CN103899594A - Manual emergency operation device and method for internal-expansion locking cylinder - Google Patents
Manual emergency operation device and method for internal-expansion locking cylinder Download PDFInfo
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- CN103899594A CN103899594A CN201410114929.7A CN201410114929A CN103899594A CN 103899594 A CN103899594 A CN 103899594A CN 201410114929 A CN201410114929 A CN 201410114929A CN 103899594 A CN103899594 A CN 103899594A
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Abstract
本发明公开了一种内涨式锁紧油缸手动应急操作装置及方法，该装置包括：泄荷截止阀（1）、第一手动泵（2）、隔离截止阀（3）、第一油口（4）、蓄能器（5）、压力表（6）、第二油口（7）、第三油口（8）、液压管路（9）、第四油口（10）、第五油口（11）、第二手动泵（12）、单向阀（13）、带手动推杆的三位四通电磁换向阀（14）、第六油口（15）、第七油口（16）；第一手动泵（2）的出油口、第一油口（4）、蓄能器（5）、压力表（6）、隔离截止阀（3）的一个油口、泄荷截止阀（1）的一个油口通过液压管路两两互通。应用本发明，可以实现内涨式锁紧油缸活塞杆应急伸出或收回。
The invention discloses a manual emergency operation device and method for an internally expanding locking oil cylinder. The device comprises: a discharge stop valve (1), a first manual pump (2), an isolation stop valve (3), a first oil port (4), accumulator (5), pressure gauge (6), second oil port (7), third oil port (8), hydraulic pipeline (9), fourth oil port (10), fifth Oil port (11), second manual pump (12), one-way valve (13), three-position four-way solenoid directional valve with manual push rod (14), sixth oil port (15), seventh oil port (16); the oil outlet of the first manual pump (2), the first oil port (4), the accumulator (5), the pressure gauge (6), one oil port of the isolation shut-off valve (3), the drain One oil port of the load cut-off valve (1) communicates with each other through the hydraulic pipeline. By applying the present invention, emergency extension or retraction of the piston rod of the internal expansion locking oil cylinder can be realized.
Description
Technical field
The present invention relates to internal expansion type locking cylinder manualemergency operating device.In the time of hydraulic system dead electricity, the manual-operated emergent that uses this device can complete internal expansion type locking cylinder piston stretches out or regains.
Background technique
Hydraulic cylinder piston rod stretches out and when bearing load, General Requirements piston rod keeps its position not retract within a certain period of time, conventionally adopts hydraulic lock loop to realize the hydraulic locking of piston rod.Because internal leakage is inevitable, under long-term work, conventional hydraulic lock loop cannot ensure the positional accuracy of hydraulic cylinder piston rod.Locking cylinder is the special oil cylinder that a class adopts mechanical interlocking method locking cylinder barrel and piston (or piston rod), owing to having adopted mechanical interlocking method, and the piston rod retraction phenomenon of having avoided the internal leakage of conventional oil cylinder to cause.Press the difference of mechanical interlocking mode, develop a variety of locking cylinders, internal expansion type locking cylinder is one wherein.
Working principle is referring to Fig. 1, and piston and cylinder barrel adopt interference fit, and degree of interference fit has determined the size of coupling mechanism force.Release high pressure oil in the time that the first hydraulic fluid port, conduit are injected between piston and cylinder barrel, cylinder barrel spreading, interference fit becomes Spielpassung, the logical oil of the second hydraulic fluid port, c, piston rod stretches out or regains.When the drain charge of release high pressure oil, cylinder barrel latching ram.
Internal expansion type locking cylinder has an outstanding feature: conduit, piston rod cavity, piston radial hole form the cavity of a sealing, and in the time that piston rod stretches out, this cavity volume increases, and when piston rod is regained, volume reduces.This feature makes internal expansion type locking cylinder can not adopt conventional hand pump as emergent release power source.If produce release high pressure oil with conventional manual pump, in the time that piston rod stretches out, it is large that above-mentioned sealed cavity volume becomes, and release pressure is down to 0 immediately, very easily between piston and cylinder barrel, produces pull-cylinder phenomena.
Internal expansion type locking cylinder is already ripe technically, be widely used in the fields such as radar truck leveling, but have not yet to see the bibliographical information of internal expansion type locking cylinder manualemergency operating device, also without Related product, conventionally the emergency method adopting is directly to remove locking cylinder, wastes time and energy.
Summary of the invention
Technical problem: technical problem to be solved by this invention is to provide a kind of internal expansion type locking cylinder manualemergency operating device and method, in the time of hydraulic system dead electricity, application the present invention can make internal expansion type locking cylinder piston rod stretch out or regain.
Summary of the invention: for solving the problems of the technologies described above, the invention provides a kind of internal expansion type locking cylinder manualemergency operating device, this device comprises:
Drain charge stop valve, the first hand pump, isolation stop valve, the first hydraulic fluid port, accumulator, pressure gauge, the second hydraulic fluid port, the 3rd hydraulic fluid port, hydraulic pipe line, the 4th hydraulic fluid port, the 5th hydraulic fluid port, the second hand pump, one-way valve, the 3-position 4-way solenoid directional control valve with hand push rod, the 6th hydraulic fluid port, the 7th hydraulic fluid port;
A hydraulic fluid port of the oil outlet of the first hand pump, the first hydraulic fluid port, accumulator, pressure gauge, isolation stop valve, a hydraulic fluid port of drain charge stop valve are by hydraulic pipe line two two intercommunicatings;
Inlet port, the 3rd hydraulic fluid port of the inlet port of the first hand pump, another hydraulic fluid port of drain charge stop valve, the second hand pump pass through hydraulic pipe line two two intercommunicatings;
The Free-flow moved end of the oil outlet of the second hand pump and one-way valve is connected with hydraulic pipe line; Pressure port P, the 4th hydraulic fluid port of the pressure end of one-way valve, the 3-position 4-way solenoid directional control valve with hand push rod are connected by hydraulic pipe line;
The 5th hydraulic fluid port is connected by hydraulic pipe line with the oil return inlet T of the 3-position 4-way solenoid directional control valve with hand push rod;
The 6th hydraulic fluid port is connected with the delivery outlet B of the 3-position 4-way solenoid directional control valve with hand push rod;
The 7th hydraulic fluid port is connected with the delivery outlet A of the described 3-position 4-way solenoid directional control valve with hand push rod;
Release pressure drop when accumulator stretches out for compensating internal expansion type locking cylinder piston rod; Pressure gauge is for monitoring the variation of release pressure.
Preferably, drain charge stop valve is attempted by the first hand pump inlet port and oil outlet.
Preferably, isolation stop valve is connected on first and manually pumps between hydraulic fluid port and the second hydraulic fluid port.
Preferably, one-way valve is connected between the second hand pump and the 4th hydraulic fluid port.
The present invention also provides a kind of internal expansion type locking cylinder manual-operated emergent operating method, and the method comprises the steps:
The first hydraulic fluid port connects the release hydraulic fluid port of internal expansion type locking cylinder, and the 3rd hydraulic fluid port connects hydraulic reservoir, and the second hydraulic fluid port connects hydraulic system major loop;
The 4th hydraulic fluid port connects hydraulic system major loop, and the 5th hydraulic fluid port connects hydraulic system return line, and the 6th hydraulic fluid port, the 7th hydraulic fluid port connect respectively rod chamber, the rodless cavity of internal expansion type locking cylinder;
In the time of hydraulic system dead electricity, make to isolate stop valve, drain charge stop valve in cut-off state; Operating the first hand pump makes the first hydraulic fluid port pressure oil output to accumulator topping up, release pressure is increased to rating value gradually, now internal expansion type locking cylinder release, one side hand push rod of the 3-position 4-way solenoid directional control valve with hand push rod is pushed to, and operation hand pump makes the piston rod of internal expansion type locking cylinder stretch out or regain;
In the time that internal expansion type locking cylinder piston rod stretches out, because release oil circuit volume increases, release pressure can decline gradually, prescribes a time limit to the lower of rating value when the release pressure drop of pressure gauge instruction, and operation the first hand pump raises release pressure;
In the time that internal expansion type locking cylinder piston rod is regained, because release oil circuit volume reduces, release pressure can raise gradually, when being increased to the upper of rating value, the release pressure of pressure gauge instruction prescribes a time limit, should operate drain charge stop valve, between the first hydraulic fluid port and the 3rd hydraulic fluid port, form drain charge loop, make release pressure drop;
Blocked operation the first hand pump and drain charge stop valve, make the release of internal expansion type locking cylinder, operates the second hand pump simultaneously and make internal expansion type locking cylinder piston rod stretch out or regain.
Preferably, the 3rd hydraulic fluid port is communicated to below the hydraulic oil liquid level in hydraulic reservoir.
Beneficial effect: application the present invention, under power failure state, can realize easily by manpower that internal expansion type locking cylinder piston rod is emergent to be stretched out or regain, for providing a kind of meeting an urgent need, the various vehicular platforms of application internal expansion type locking cylinder remove fast the means of receipts.
Brief description of the drawings
Fig. 1 is the structural representation of prior art;
Wherein, 1 ' piston; 2 ' piston rod; 3 ' conduit; 4 ' cylinder barrel
Fig. 2 is structural representation provided by the invention;
1. drain charge stop valve 2. first hand pumps 3. are isolated stop valve 4. first hydraulic fluid ports
5. accumulator 6. pressure gauge 7. second hydraulic fluid port 8. the 3rd hydraulic fluid ports
9. hydraulic pipe line 10. the 4th hydraulic fluid port 11. the 5th hydraulic fluid port 12. second hand pumps
The 3-position 4-way solenoid directional control valve of 13. one-way valves 14. with hand push rod
15. the 6th hydraulic fluid port 16. the 7th hydraulic fluid ports
Embodiment
Below in conjunction with drawings and the embodiments, patent of the present invention is described in further detail:
As shown in Figure 1, described internal expansion type locking cylinder manualemergency operating device comprises drain charge stop valve 1, the first hand pump 2, isolation stop valve 3, the first hydraulic fluid port 4, accumulator 5, pressure gauge 6, the second hydraulic fluid port 7, the 3rd hydraulic fluid port 8, hydraulic pipe line 9, the 4th hydraulic fluid port 10, the 5th hydraulic fluid port 11, the second hand pump 12, one-way valve 13, the 3-position 4-way solenoid directional control valve 14 with hand push rod, the 6th hydraulic fluid port 15, the 7th hydraulic fluid port 16.
The oil outlet of the first hand pump 2, the first hydraulic fluid port 4, accumulator 5, pressure gauge 6, a hydraulic fluid port of isolation stop valve 3, a hydraulic fluid port of drain charge stop valve 1 interconnect by hydraulic pipe line;
Inlet port, the 3rd hydraulic fluid port 8 of the inlet port of the first hand pump 2, another hydraulic fluid port of drain charge stop valve 1, the second hand pump 12 interconnect by hydraulic pipe line;
The Free-flow moved end of the oil outlet of the second hand pump 12 and one-way valve 13 is connected with hydraulic pipe line; Pressure port P, the 4th hydraulic fluid port 10 of the pressure end of one-way valve 13, the 3-position 4-way solenoid directional control valve 14 with hand push rod are connected by hydraulic pipe line;
The 5th hydraulic fluid port 11 is connected by hydraulic pipe line with the oil return inlet T of the 3-position 4-way solenoid directional control valve 14 with hand push rod;
The 6th hydraulic fluid port 15 is connected with the delivery outlet B of the 3-position 4-way solenoid directional control valve 14 with hand push rod;
The 7th hydraulic fluid port 16 is connected with the delivery outlet A of the described 3-position 4-way solenoid directional control valve 14 with hand push rod;
Release pressure drop when accumulator 5 stretches out for compensating internal expansion type locking cylinder piston rod; Pressure gauge 6 is for monitoring the variation of release pressure.
Drain charge stop valve 1 is attempted by the first hand pump 2 inlet ports and oil outlet.Conventionally should, in rest position, in the time that the withdrawal of internal expansion type locking cylinder piston rod causes release pressure rise, should rotate drain charge stop valve, between the first hand pump 2 oil outlets and inlet port, form drain charge loop, make release pressure drop to suitable value.One-way valve 13, for isolating the second hand pump 12 and hydraulic system major loop, has the normal use under electricity condition when the second hand pump 12 occurs not affect hydraulic system while leakage.
One-way valve 13 is connected between the second hand pump 12 and the 4th hydraulic fluid port 10.
The present invention also provides a kind of internal expansion type locking cylinder manual-operated emergent operating method, and the method comprises the steps:
The first hydraulic fluid port 4 connects the release hydraulic fluid port of internal expansion type locking cylinder, and the 3rd hydraulic fluid port 8 connects hydraulic reservoir, and the second hydraulic fluid port 7 connects hydraulic system major loop;
The 4th hydraulic fluid port 10 connects hydraulic system major loop, and the 5th hydraulic fluid port 11 connects hydraulic system return line, and the 6th hydraulic fluid port 15, the 7th hydraulic fluid port 16 connect respectively rod chamber, the rodless cavity of internal expansion type locking cylinder;
In the time of hydraulic system dead electricity, make to isolate stop valve 3, drain charge stop valve 1 in cut-off state; Operating the first hand pump 2 makes the first hydraulic fluid port 4 pressure oil output to accumulator 5 topping ups, release pressure is increased to rating value gradually, now internal expansion type locking cylinder release, one side hand push rod of the 3-position 4-way solenoid directional control valve 14 with hand push rod is pushed to, and operation the second hand pump 12 makes the piston rod of internal expansion type locking cylinder stretch out or regain;
In the time that internal expansion type locking cylinder piston rod stretches out, because release oil circuit volume increases, release pressure can decline gradually, prescribes a time limit to the lower of rating value when the release pressure drop that pressure gauge 6 is indicated, and operation the first hand pump 2 raises release pressure;
In the time that internal expansion type locking cylinder piston rod is regained, because release oil circuit volume reduces, release pressure can raise gradually, the release pressure of indicating when pressure gauge 6 is increased to rating value upper in limited time, should operate drain charge stop valve 1, between the first hydraulic fluid port 1 and the 3rd hydraulic fluid port 8, form drain charge loop, make release pressure drop;
Blocked operation the first hand pump 2 and drain charge stop valve 1, make the release of internal expansion type locking cylinder, operates the second hand pump 12 simultaneously and make internal expansion type locking cylinder piston rod stretch out or regain.
The 3rd hydraulic fluid port 8 is communicated to below the hydraulic oil liquid level in hydraulic reservoir.
The present invention does not affect hydraulic system in the normal running having under electricity condition.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. an internal expansion type locking cylinder manualemergency operating device, is characterized in that, this device comprises:
Drain charge stop valve (1), the first hand pump (2), isolation stop valve (3), the first hydraulic fluid port (4), accumulator (5), pressure gauge (6), the second hydraulic fluid port (7), the 3rd hydraulic fluid port (8), hydraulic pipe line (9), the 4th hydraulic fluid port (10), the 5th hydraulic fluid port (11), the second hand pump (12), one-way valve (13), the 3-position 4-way solenoid directional control valve (14) with hand push rod, the 6th hydraulic fluid port (15), the 7th hydraulic fluid port (16);
A hydraulic fluid port of the oil outlet of the first hand pump (2), the first hydraulic fluid port (4), accumulator (5), pressure gauge (6), isolation stop valve (3), a hydraulic fluid port of drain charge stop valve (1) are by hydraulic pipe line two two intercommunicatings;
Inlet port, the 3rd hydraulic fluid port (8) of the inlet port of the first hand pump (2), another hydraulic fluid port of drain charge stop valve (1), the second hand pump (12) pass through hydraulic pipe line two two intercommunicatings;
The oil outlet of the second hand pump (12) is connected with hydraulic pipe line with the Free-flow moved end of one-way valve (13); Pressure port (P), the 4th hydraulic fluid port (10) of the pressure end of one-way valve (13), the 3-position 4-way solenoid directional control valve (14) with hand push rod pass through hydraulic pipe line two two intercommunicatings;
The 5th hydraulic fluid port (11) is connected by hydraulic pipe line with the return opening (T) of the 3-position 4-way solenoid directional control valve (14) with hand push rod;
The 6th hydraulic fluid port (15) is connected with the delivery outlet (B) of the 3-position 4-way solenoid directional control valve (14) with hand push rod;
The 7th hydraulic fluid port (16) is connected with the delivery outlet (A) of the described 3-position 4-way solenoid directional control valve (14) with hand push rod;
Release pressure drop when accumulator (5) stretches out for compensating internal expansion type locking cylinder piston rod; Pressure gauge (6) is for monitoring the variation of release pressure.
2. internal expansion type locking cylinder manualemergency operating device according to claim 1, is characterized in that, drain charge stop valve (1) is attempted by the first hand pump (2) inlet port and oil outlet.
3. internal expansion type locking cylinder manualemergency operating device according to claim 1, is characterized in that, isolation stop valve (3) is connected between the first hand pump (2) oil outlet and the second hydraulic fluid port (7).
4. internal expansion type locking cylinder manualemergency operating device according to claim 1, is characterized in that, one-way valve (13) is connected between the second hand pump (12) and the 4th hydraulic fluid port (10).
5. an internal expansion type locking cylinder manual-operated emergent operating method, is characterized in that, the method comprises the steps:
The first hydraulic fluid port (4) connects the release hydraulic fluid port of internal expansion type locking cylinder, and the 3rd hydraulic fluid port (8) connects hydraulic reservoir, and the second hydraulic fluid port (7) connects hydraulic system major loop;
The 4th hydraulic fluid port (10) connects hydraulic system major loop, and the 5th hydraulic fluid port (11) connects hydraulic system return line, and the 6th hydraulic fluid port (15), the 7th hydraulic fluid port (16) connect respectively rod chamber, the rodless cavity of internal expansion type locking cylinder;
In the time of hydraulic system dead electricity, make to isolate stop valve (3), drain charge stop valve (1) in cut-off state; Operating the first hand pump (2) makes the first hydraulic fluid port (4) pressure oil output to accumulator (5) topping up, release pressure is increased to rating value gradually, now internal expansion type locking cylinder release, one side hand push rod of the 3-position 4-way solenoid directional control valve (14) with hand push rod is pushed to, and operation the second hand pump makes the piston rod of internal expansion type locking cylinder stretch out or regain;
In the time that internal expansion type locking cylinder piston rod stretches out, because release oil circuit volume increases, release pressure can decline gradually, prescribes a time limit to the lower of rating value when the release pressure drop of pressure gauge (6) instruction, and operation the first hand pump (2) raises release pressure;
In the time that internal expansion type locking cylinder piston rod is regained, because release oil circuit volume reduces, release pressure can raise gradually, when being increased to the upper of rating value, the release pressure of pressure gauge (6) instruction prescribes a time limit, should operate drain charge stop valve (1), between the first hydraulic fluid port (4) and the 3rd hydraulic fluid port (8), form drain charge loop, make release pressure drop;
Blocked operation the first hand pump (2) and drain charge stop valve (1), make the release of internal expansion type locking cylinder, operates the second hand pump (12) simultaneously and make internal expansion type locking cylinder piston rod stretch out or regain.
6. internal expansion type locking cylinder manual-operated emergent operating method according to claim 5, is characterized in that, the 3rd hydraulic fluid port (8) is communicated to below the hydraulic oil liquid level in hydraulic reservoir.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114929.7A CN103899594B (en) | 2014-03-25 | 2014-03-25 | Internal expansion type locking cylinder manualemergency operating device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114929.7A CN103899594B (en) | 2014-03-25 | 2014-03-25 | Internal expansion type locking cylinder manualemergency operating device and method |
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| CN103899594A true CN103899594A (en) | 2014-07-02 |
| CN103899594B CN103899594B (en) | 2016-01-06 |
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| CN201410114929.7A Expired - Fee Related CN103899594B (en) | 2014-03-25 | 2014-03-25 | Internal expansion type locking cylinder manualemergency operating device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832473A (en) * | 2015-03-31 | 2015-08-12 | 东南大学 | Portable emergency operating device for leveling locking cylinder and operation method thereof |
| CN110905872A (en) * | 2019-11-15 | 2020-03-24 | 湖北航天技术研究院总体设计所 | Double-cylinder linkage hydraulic circuit based on control over energy accumulator |
| WO2022089305A1 (en) * | 2020-10-26 | 2022-05-05 | 中国第一汽车股份有限公司 | Parking lock device for emergency unlocking, and vehicle |
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| WO1997034093A1 (en) * | 1996-03-13 | 1997-09-18 | Robert Bosch Gmbh | Emergency hydraulic control for continuously variable transmission with expanded manually-operated valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832473A (en) * | 2015-03-31 | 2015-08-12 | 东南大学 | Portable emergency operating device for leveling locking cylinder and operation method thereof |
| CN110905872A (en) * | 2019-11-15 | 2020-03-24 | 湖北航天技术研究院总体设计所 | Double-cylinder linkage hydraulic circuit based on control over energy accumulator |
| CN110905872B (en) * | 2019-11-15 | 2021-11-02 | 湖北航天技术研究院总体设计所 | Double-cylinder linkage hydraulic circuit based on control over energy accumulator |
| WO2022089305A1 (en) * | 2020-10-26 | 2022-05-05 | 中国第一汽车股份有限公司 | Parking lock device for emergency unlocking, and vehicle |
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| CN103899594B (en) | 2016-01-06 |
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