CN204851834U - Pneumatic cylinder is flexible control circuit fast - Google Patents

Pneumatic cylinder is flexible control circuit fast Download PDF

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Publication number
CN204851834U
CN204851834U CN201520427808.8U CN201520427808U CN204851834U CN 204851834 U CN204851834 U CN 204851834U CN 201520427808 U CN201520427808 U CN 201520427808U CN 204851834 U CN204851834 U CN 204851834U
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CN
China
Prior art keywords
oil
valve
hydraulic cylinder
oil hydraulic
electromagnetism
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 - Fee Related
Application number
CN201520427808.8U
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Chinese (zh)
Inventor
孙生强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Lanwang Machine Tools Technology Co Ltd
Original Assignee
Suzhou Lanwang Machine Tools Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Lanwang Machine Tools Technology Co Ltd filed Critical Suzhou Lanwang Machine Tools Technology Co Ltd
Priority to CN201520427808.8U priority Critical patent/CN204851834U/en
Application granted granted Critical
Publication of CN204851834U publication Critical patent/CN204851834U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a pneumatic cylinder is flexible control circuit fast, it includes pneumatic cylinder (1), its characterized in that of: the oil -out of oil pump (6) is connected with the oil inlet of two tee bend magenetic exchange valve (5), and the oil return opening of two tee bend magenetic exchange valve (5) and the oil inlet of oil pump (6) are linked together with the inside of oil tank (7), two tee bend magenetic exchange valve (5) two business turn over hydraulic fluid ports pass through electromagnetism break -make valve second (3) respectively, electromagnetism break -make valve third (4) is linked together with no pole intracavity portion with the rod end chamber of pneumatic cylinder (1), the rod end chamber and the no pole intracavity portion of pneumatic cylinder (1) pass through first (2) the looks UNICOM on the electromagnetism break -make valve, the utility model has the advantages of the fault rate is lower, installation easy maintenance, reliable operation.

Description

A kind of oil hydraulic cylinder quick-expansion control loop
Technical field
The utility model relates to a kind of oil circuit control of oil hydraulic cylinder, and specifically a kind of oil hydraulic cylinder quick-expansion control loop, particularly relates to the telescopic hydraulic cylinder control loop in the arm support machinery such as high-altitude operation vehicle.
Background technique
In the arm support machinery such as current high-altitude operation vehicle, in order to ensure larger thrust, telescopic hydraulic cylinder piston area design very large, and in order to ensure to have after oil hydraulic cylinder stretches out enough rigidity, it is also comparatively thick that its piston rod designs, and this just makes the area ratio of the rodless cavity of oil hydraulic cylinder and rod chamber very large.And the fore and aft motion of oil hydraulic cylinder controls by selector valve.Due to the restriction of the reason such as size, weight, the through-current capacity of selector valve is limited.Cause like this as a result, when oil hydraulic cylinder stretches out, the volume of flow opposing hydraulic cylinder rodless cavity of selector valve supply oil hydraulic cylinder is relatively little, and the speed of stretching out of oil hydraulic cylinder is comparatively slow, does not reach satisfied speed; During oil hydraulic cylinder retraction, because the relation of the area ratio of oil hydraulic cylinder rodless cavity and rod chamber, the recirculating oil quantity of oil hydraulic cylinder is very large, considerably beyond the specified through-current capacity of selector valve, cause the overpressure of very high pressure loss and rodless cavity, the pressure of rodless cavity raises the rising causing rod chamber pressure on the one hand, wastes energy, causes oil liquid temperature to raise too fast, on the other hand, the pressure of rodless cavity raises and even causes relief valve overflow, decreases the flow of selector valve supply oil hydraulic cylinder, causes speed to reduce.Under current technical specifications, in order to ensure the movement speed improving system under main frame completes the prerequisite of function,
Usually following scheme is taked:
1, increase pump delivery, improve the delivery volume of fluid, and then improve the movement velocity of oil hydraulic cylinder.But this scheme is still limited to the through-current capability of valve.
2, the diameter of oil hydraulic cylinder is reduced.But do the rigidity that can weaken oil cylinder like this, when causing use, amount of deflection is excessive.
3, the through-current capability of selector valve is increased.Selector valve is limited to the factors such as size, and the simple through-current capacity increasing a valve is difficult to.Comparatively feasible way is by increasing a selector valve at present, namely uses two valves to oil hydraulic cylinder fuel feeding.The problem done like this is, high cost.And oil return still will flow back to fuel tank through the duct of valve inside, the pressure loss of oil return is still larger.
In order to overcome above-mentioned the deficiencies in the prior art, China Patent No. 201420449676.4; Name is called: " a kind of oil hydraulic cylinder quick-expansion control loop " discloses the technological scheme addressed the aforementioned drawbacks; This kind of scheme mainly leans on the corresponding hydraulic control valve flow of pressurized direction changed in hydraulic system to achieve the goal, but, action due to hydraulic control class valve must be just can work when pilot pressure is set up, reaction velocity is slower, working efficiency is lower, in addition, because hydraulic pressure class control valve generally exists the comparatively complicated situation of structure; There is the defect that rate of fault is lower, in addition, because hydraulic pressure class control valve needs to connect more hydraulic pipe line, not only rate of fault is higher also exists the cumbersome defect of I&M.
Summary of the invention
The purpose of this utility model is: provide a kind of oil hydraulic cylinder quick-expansion control loop, this kind of oil hydraulic cylinder quick-expansion control loop, except have can realize oil hydraulic cylinder quick-expansion control and without except, existing above-mentioned defect can also to be overcome in prior art.
A kind of oil hydraulic cylinder quick-expansion control loop described in the utility model, it comprises oil hydraulic cylinder (1), electromagnetism on-off valve first (2), electromagnetism on-off valve second (3), electromagnetism on-off valve third (4), two-bit triplet solenoid directional control valve (5), oil pump (6) and fuel tank (7), the oil outlet of oil pump (6) is connected with the filler opening of two-bit triplet solenoid directional control valve (5), the return opening of two-bit triplet solenoid directional control valve (5) and the filler opening of oil pump (6) are connected with the inside of fuel tank (7), two oil inlet and outlets of described two-bit triplet solenoid directional control valve (5) are respectively through electromagnetism on-off valve second (3), electromagnetism on-off valve third (4) is connected with rodless cavity inside with the rod end chamber of oil hydraulic cylinder (1), the rod end chamber of oil hydraulic cylinder (1) and rodless cavity inside are connected by electromagnetism on-off valve first (2).
Working principle of the present utility model is: when needing the piston rod of oil hydraulic cylinder (1) to stretch out fast, as shown in Figure (1) shows: the electromagnetic coil a of two-bit triplet solenoid directional control valve (5) is energized, the electromagnetic coil energising of electromagnetism on-off valve first (2), the electromagnetic coil no electric circuit of electromagnetism on-off valve second (3), so: the hydraulic oil of oil pump (6) is through two-bit triplet solenoid directional control valve (5), electromagnetism on-off valve third (4) is connected with the rodless cavity inside of oil hydraulic cylinder (1), and the rodless cavity that the fluid that the rod end chamber of oil hydraulic cylinder (1) is discharged flows to oil hydraulic cylinder (1) through electromagnetism on-off valve first (2) is inner, realize differential feed, the piston rod that improve oil hydraulic cylinder (1) stretches out speed fast.Be not difficult to analyze, when the piston rod when oil hydraulic cylinder (1) quits work or does the working condition of retraction movement.
Beneficial effect: the utility model is owing to mainly relying on solenoid electric valve to realize the object of the working staties such as hydraulic cylinder piston rod fast feed, because solenoid electric valve has fast response time, be active in one's movements reliable, the simple advantage of internal structure, so the utility model has that rate of fault is lower, installation and maintenance are convenient, the advantage of reliable operation.
Accompanying drawing explanation
Fig. 1 is the phase diagram of the utility model when realizing the piston rod fast feed of oil hydraulic cylinder (1);
Fig. 2 is the piston rod stop motion of oil hydraulic cylinder (1) phase diagram figure when being in pressurize;
Fig. 3 is phase diagram when doing retraction movement of the piston rod of oil hydraulic cylinder (1);
Shown in figure: 1 is oil hydraulic cylinder; 2 is electromagnetism on-off valve first; 3 is electromagnetism on-off valve second; 4 is electromagnetism on-off valves third; 5 is two-bit triplet solenoid directional control valves; 6 is oil pumps; 7 are and fuel tank.
Embodiment
Described a kind of oil hydraulic cylinder quick-expansion control loop, it comprises oil hydraulic cylinder (1), electromagnetism on-off valve first (2), electromagnetism on-off valve second (3), electromagnetism on-off valve third (4), two-bit triplet solenoid directional control valve (5), oil pump (6) and fuel tank (7), the oil outlet of oil pump (6) is connected with the filler opening of two-bit triplet solenoid directional control valve (5), the return opening of two-bit triplet solenoid directional control valve (5) and the filler opening of oil pump (6) are connected with the inside of fuel tank (7), two oil inlet and outlets of described two-bit triplet solenoid directional control valve (5) are respectively through electromagnetism on-off valve second (3), electromagnetism on-off valve third (4) is connected with rodless cavity inside with the rod end chamber of oil hydraulic cylinder (1), the rod end chamber of oil hydraulic cylinder (1) and rodless cavity inside are connected by electromagnetism on-off valve first (2).

Claims (1)

1. an oil hydraulic cylinder quick-expansion control loop, it comprises oil hydraulic cylinder (1), it is characterized in that: the oil outlet of oil pump (6) is connected with the filler opening of two-bit triplet solenoid directional control valve (5), the return opening of two-bit triplet solenoid directional control valve (5) and the filler opening of oil pump (6) are connected with the inside of fuel tank (7), two oil inlet and outlets of described two-bit triplet solenoid directional control valve (5) are respectively through electromagnetism on-off valve second (3), electromagnetism on-off valve third (4) is connected with rodless cavity inside with the rod end chamber of oil hydraulic cylinder (1), the rod end chamber of oil hydraulic cylinder (1) and rodless cavity inside are connected by electromagnetism on-off valve first (2).
CN201520427808.8U 2015-06-20 2015-06-20 Pneumatic cylinder is flexible control circuit fast Expired - Fee Related CN204851834U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520427808.8U CN204851834U (en) 2015-06-20 2015-06-20 Pneumatic cylinder is flexible control circuit fast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520427808.8U CN204851834U (en) 2015-06-20 2015-06-20 Pneumatic cylinder is flexible control circuit fast

Publications (1)

Publication Number Publication Date
CN204851834U true CN204851834U (en) 2015-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520427808.8U Expired - Fee Related CN204851834U (en) 2015-06-20 2015-06-20 Pneumatic cylinder is flexible control circuit fast

Country Status (1)

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CN (1) CN204851834U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912869A (en) * 2015-06-20 2015-09-16 苏州蓝王机床工具科技有限公司 Fast extending and contracting control loop of hydraulic cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912869A (en) * 2015-06-20 2015-09-16 苏州蓝王机床工具科技有限公司 Fast extending and contracting control loop of hydraulic cylinder

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151209

Termination date: 20160620