CN202418071U - Pneumatic control reversing valve and application thereof - Google Patents
Pneumatic control reversing valve and application thereof Download PDFInfo
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- CN202418071U CN202418071U CN2011205517980U CN201120551798U CN202418071U CN 202418071 U CN202418071 U CN 202418071U CN 2011205517980 U CN2011205517980 U CN 2011205517980U CN 201120551798 U CN201120551798 U CN 201120551798U CN 202418071 U CN202418071 U CN 202418071U
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Abstract
The utility model discloses a pneumatic control reversing valve and an application thereof. The pneumatic control reversing valve comprises a valve body, an air cylinder and a core shaft; the valve body is fixedly connected with the air cylinder; the core shaft is slideably arranged in a sliding valve hole which is communicated with the valve body and the air cylinder, and a resetting spring is arranged on the core shaft; an oil return cavity, an oil outlet cavity, an oil inlet cavity, an oil return opening corresponding to the oil return cavity, an oil outlet corresponding to the oil outlet cavity, and an oil inlet corresponding to the oil inlet cavity are formed between the core shaft and the valve body; the air cylinder is divided into two air chambers by the core shaft through a piston arranged at an end part; a rising port and a falling port are correspondingly arranged in the two air chambers, respectively; a slow falling piston is arranged at an end part of the piston inside the air cylinder; a slow falling opening is arranged in the air chamber formed by the slow falling piston and the end part of the air cylinder; the reversing valve is fixedly connected with a pump to form a whole body through a fixed connection bolt; the oil return opening of the reversing valve is communicated with an oil inlet pipe of the pump; an oil outlet of the pump is communicated with an oil inlet of the reversing valve through a connection pipe; an oil outlet of the reversing valve is connected with an oil inlet of the oil cylinder through a high-pressure oil pipe; and the pump is connected with a hydraulic oil tank through an oil tube. The pneumatic control reversing valve provided by the utility model has the advantages of small size, light weight and long service life.
Description
Technical field
The utility model relates to a kind of selector valve, is specifically related to a kind of dumping car with Pneumatic reversal valve and application thereof.
Background technique
The dumping car Pneumatic reversal valve is the control valve that dumping car is realized the lifting action; Hand control valves such as itself and one control air valve cooperate actions such as accomplishing compartment " lifting, in stop, descend, fall slowly ", and said Pneumatic reversal valve is two-way gas control guiding valve; Lose in accident under the situation of gas control pressure; Automatically select " in stop " position, prevent that the compartment from descending suddenly, guarantee people, car safety.
Domestic Pneumatic reversal valve all is to be fixed on the hydraulic oil container at present; Direct and the fuel tank UNICOM of the return opening of selector valve, the filler opening of selector valve is with the oil outlet UNICOM of high-pressure oil pipe and pump simultaneously, and the oil outlet of valve is connected with the oil cylinder filler opening with high-pressure oil pipe; And the filler opening of oil pump is connected with the fuel tank oil outlet with oil pipe; This structure lifting, in stop and when descending hydraulic oil all form the loop, oil pump is in running order always, the operating time is long; Hydraulic oil generates heat easily, influences its work and causes service life of equipment short.
Traditional Pneumatic reversal valve is provided with safety valve, makes its Heavy Weight, and volume is big, difficult.
Summary of the invention
To above-mentioned deficiency of the prior art, the utility model aims to provide a kind of Pneumatic reversal valve and application thereof, and said Pneumatic reversal valve is in light weight; Volume is little, and it can form the pump valve one with pump, has saved the mounting material cost; Through forming the pump valve one; Make the operating time of oil pump shorten, oil pump and hydraulic oil all are difficult for heating, have prolonged the working life of whole hydraulic system greatly.
The technological scheme of the utility model: a kind of Pneumatic reversal valve; Comprise valve body, cylinder and mandrel, said valve body and said cylinder are connected, and have the sliding valve hole that is communicated with this valve body and cylinder within it; Said mandrel slides and is arranged in this sliding valve hole, on mandrel, is provided with return spring;
Be formed with oil back chamber between said mandrel and the valve body, go out oil pocket and oil suction chamber, establish return opening, oil outlet and filler opening and this oil back chamber on the said valve body respectively, go out oil pocket and oil suction chamber is corresponding one by one;
Said mandrel is divided into two air chambers through the piston of being located at its end with said cylinder interior; Correspondence is provided with lifting mouth and port for drawdown respectively on this 2 air chambers; Between piston and cylinder end, be provided with and fall piston slowly, and fall mouth slowly falling slowly to be provided with on the 3rd air chamber that forms between piston and the cylinder end.
Said oil back chamber is two, and it is divided into said go out oil pocket and oil suction chamber two ends, and said two oil back chambers are connected through drainback passage.
Be connected through bolt between said cylinder and the said valve body.
Said return spring is arranged on the said cylinder end near valve body through spring spool and spring seat, this spring spool respectively and between the said cylinder, mandrel sealing be provided with.
The said piston that falls slowly stretches out the outer adjusting nut of also installing of cylinder above that, and this falls slowly to be tightly connected between piston and the cylinder and also can in this cylinder, move around.
On said cylinder, being provided with protection cylinder seals the said piston exposed parts that falls slowly.
Through on Pneumatic reversal valve, setting up oil back chamber, go out oil pocket and oil suction chamber, and establish corresponding return opening, oil outlet and filler opening above that.Cancel traditional safety valve, safety valve has been arranged on the oil pump of its combination, alleviated the weight of whole Pneumatic reversal valve, dwindled the volume of whole gas selector valve, therefore, practiced thrift cost.And said cylinder and valve body are set up separately, have reduced the processing technology difficulty of whole Pneumatic reversal valve.
Another purpose of the utility model is the application that discloses a kind of Pneumatic reversal valve; Said selector valve and pump are fixed on one through affixed bolt; The return opening of said selector valve is communicated with the oil inlet pipe of pump; The oil outlet of pump is communicated with through connecting tube with the filler opening of selector valve, and the oil outlet of selector valve is connected through high-pressure oil pipe with the filler opening of oil cylinder, and pump is connected through oil pipe with hydraulic oil container.
Pneumatic reversal valve and the affixed formation pump valve of said oil pump one through the utility model design; Practiced thrift the installation sheet material of traditional Pneumatic reversal valve on fuel tank; And be wholely set through pump valve, also saved the installation pipeline between selector valve and the oil pump, reduced installation cost.
When the utility model was worked in lifting, oil pump was started working, and after lifting was accomplished, during decline, oil inlet passage became drainback passage, and hydraulic oil is got back to fuel tank through this passage, and at this moment, oil pump quits work, and promptly not oil suction of oil pump this moment is in idling conditions.Therefore, the operating time of oil pump is short, and oil pump and hydraulic oil all are difficult for heating, have prolonged the working life of whole hydraulic system greatly.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model Pneumatic reversal valve;
Fig. 2 is the sectional structure schematic representation of Fig. 1 side-looking;
Fig. 3 is the work schematic representation that the utility model and pump are formed the pump valve one.
Embodiment
Come further explain the utility model below in conjunction with specific embodiment and accompanying drawing.
See also Fig. 1 to Fig. 3, said Pneumatic reversal valve comprises valve body 3, cylinder 8 and mandrel 2; Said valve body 3 is connected with said cylinder 8; Have the sliding valve hole that is communicated with this valve body 3 and cylinder 7 within it, said mandrel 2 slides and is arranged in this sliding valve hole, on mandrel 2, is provided with return spring 6;
Be formed with oil back chamber I, IV between said mandrel 2 and the valve body 3, go out oil pocket II and oil suction chamber III, establish return opening 19, oil outlet 18 and filler opening 17 and this oil back chamber I on the said valve body 3 respectively, go out oil pocket II and oil suction chamber III is corresponding one by one;
Said mandrel 2 is divided into two air chamber V, VI through the piston 10 of being located at its end with said cylinder 8 inside; Be provided with lifting mouth 11 and port for drawdown 7 in this 2 air chambers V, the last correspondence respectively of VI; Between piston 10 and cylinder 8 ends, be provided with and fall piston 12 slowly, and fall mouthfuls 16 slowly falling slowly to be provided with on the 3rd air chamber VII that forms between piston 12 and cylinder 8 ends.
A plurality of chamber I, II, III, IV and a plurality of air chamber V, VI that mandrel 2 in the utility model and valve body 3 and cylinder 8 form; In the cylinder 8 the air chamber VII that piston 12 forms falls slowly, through the gas control between the chamber I in the air chamber V in the cylinder 8, VI, VII and the valve body 3, II, III, the IV flow, oil circuit flows to the actions such as " liftings, in stop, descend, fall slowly " that cooperates one control air valve completion compartment.
Particularly; Know by Fig. 1 and Fig. 2; Oil back chamber I arranged in the said Pneumatic reversal valve from top to bottom successively, go out oil pocket II, oil suction chamber III, oil back chamber IV, return spring chamber, decline air chamber V, lifting air chamber VI and slow sending down abnormally ascending chamber VII; It is through mandrel 2 and valve body 3, cylinder 8, fall piston 12 slowly and form with cylinder 8, and above that all correspondence be provided with hydraulic fluid port or gas port return opening 19, oil outlet 18, filler opening 17, return opening 19, port for drawdown 7, lifting mouth 11 and fall mouthfuls 16 slowly.Wherein, Said return spring chamber is to form through spring seat 4, spring spool 9 and cylinder 8, and return spring 6 is set in it, and said spring seat 4 is positioned at the end of said valve body 3; Spring spool 9 is positioned on the step on the said cylinder 8; Middle support, but make and mandrel 2 self-returns seal between spring spool 9 and the said cylinder 8 through the O RunddichtringO by return spring 6.For oil back chamber I, IV in the valve body 3, these two oil back chamber I, IV are located at the two ends of said oil pocket II of going out and oil suction chamber III respectively, and are communicated with through drainback passage between two the oil back chamber I, IV.Make that when mandrel 2 moves up and down said oil back chamber I, IV can go out oil pocket II or oil suction chamber III is connected with said, that is to say that return opening 19 can be connected with oil outlet 18 or filler opening 17, form hydraulic system.
Be fixedly connected through bolt 5 between said cylinder 8 in the utility model and the said valve body 3, and be provided with through end cap 1 sealing in the other end of valve body 3; Slowly fall body 13 and be tightly connected through being provided with at the other end of cylinder 8, by said fall piston 12, cylinder 8 inwalls slowly and fall body 13 slowly form slow sending down abnormally ascending chamber VII.Whole Pneumatic reversal valve split is connected, make the producting process difficulty of its parts reduce, keep in repair easy.
For slow sending down abnormally ascending chamber VII; The said piston 12 that falls slowly stretches out outside the cylinder 8; Just stretch out and fall slowly outside the body 13, and installing adjusting nut 14 on piston 12 exposed parts falls in cylinder 8 or fall slowly slowly on the body 13, this adjusting nut 14 is two; Make it after adjusting, have auto-lock function, said falling slowly between piston 12 and cylinder 8 inwalls through the O RunddichtringO is tightly connected and can in this cylinder 8, moves around.On said cylinder 8, also being provided with protection cylinder 15 seals said piston 12 exposed parts that fall slowly.
Application for the Pneumatic reversal valve in the utility model; Referring to shown in Figure 3, said Pneumatic reversal valve abbreviates selector valve as, and this selector valve 100 is fixed on one with pump 200 through affixed bolt; The return opening of said selector valve 100 is communicated with the oil inlet pipe of pump 200; The oil outlet of pump 200 is communicated with through connecting tube with the filler opening of selector valve 100, and the oil outlet of selector valve 100 is connected through high-pressure oil pipe with the filler opening of oil cylinder 300, and pump 200 and hydraulic oil container 400 are connected through oil pipe.
Said concrete work is such, and referring to Fig. 1 to Fig. 3, the Joystick that has just begun one control air valve is in middle off-position and puts; Pull said Joystick to lifting gear, open lifting mouth 11, the lifting air chamber VI that gas is got in the cylinder 8 by this lifting mouth 11; Promote piston 10, mandrel 2 is descended, block return opening 19 by the pillow block on the mandrel 2; Oil suction chamber III with go out oil pocket II and be communicated with, pump 200 is started working simultaneously, oil suctions in the hydraulic oil container 400; Again by the filler opening 17 of oil outlet to the selector valve 100 of pump 200; 3 inner oil suction chamber III flow to out oil pocket II by valve body, and this goes out oil pocket II from the filler opening of oil outlet 18 through high-pressure oil pipe to elevating ram 300 at last, carry out the lifting action in compartment;
When the Joystick of said one control air valve is pulled to the decline gear, that is to say and open port for drawdown 7 that gas is entered in the decline air chamber V in the cylinder 8 by this port for drawdown 7; Promote piston 10, mandrel 2 is risen, will go out oil pocket II and oil suction chamber III separates by the pillow block on the mandrel 2; Be communicated with the oil back chamber I of its below and go out oil pocket II, oil suction chamber III is communicated with the oil back chamber IV of its top, does not need pump 200 from hydraulic oil container 400 interior oil suctions during owing to decline; Therefore, this moment, pump 200 oil suction that quits work promptly was in idling conditions; Hydraulic oil in elevating ram 300 goes out oil pocket II in high-pressure oil pipe is back to selector valve 100, go out oil pocket II to oil back chamber I by this again, oil back chamber I via return line to oil back chamber IV; Oil back chamber IV passes through filler opening 17 oil returns to hydraulic oil container 400 from this oil suction chamber III at last to oil suction chamber III;
On the basis that descends, continue said Joystick is pulled to the position that lowers category slowly, at this time open again and fall mouth 16 slowly; Gas falls mouth 16 slowly from this and enters to slow sending down abnormally ascending chamber VII, drops on the piston 10 by promoting to fall piston 12 slowly, continues to promote piston 10; Mandrel 2 is descended, and the pillow block on the mandrel 2 makes recirculating oil quantity reduce in enclosure portion oil back chamber I, the last drainback passage mouth of IV; Finally the oil return speed from elevating ram 300 to hydraulic oil container 400 reduces, thereby reaches the effect of falling slowly;
When Joystick is pulled in stop that gear or one control air valve lose behind control handle wrench to the lifting gear when having lifting self-return function or accident when losing external force, lifting mouth 11 stops air inlet, at this moment port for drawdown 7, fall mouthfuls 16 slowly and close; Return spring 6 will be because the Memorability of self will restore to the original state, and promptly return spring 6 will promote mandrel 2 and move upward; At this moment; Pillow block on the mandrel 2 will go out oil pocket II respectively and separate with oil back chamber I, oil suction chamber III, and oil suction chamber III is communicated with oil back chamber IV, and oil back chamber I and oil back chamber IV are communicated with through drainback passage; If pump 200 is under the situation of working on, hydraulic oil will be done periodic duty in selector valve 100 and pump 200.Prevented that the compartment from descending suddenly, guaranteed people, car safety.
More than technological scheme that the utility model embodiment is provided carried out detailed introduction; Used concrete example among this paper the utility model embodiment's principle and mode of execution are set forth, above embodiment's explanation only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and application area, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (7)
1. Pneumatic reversal valve, it is characterized in that: comprise valve body, cylinder and mandrel, said valve body and said cylinder are connected, and have the sliding valve hole that is communicated with this valve body and cylinder within it, and said mandrel slides and is arranged in this sliding valve hole, on mandrel, is provided with return spring;
Be formed with oil back chamber between said mandrel and the valve body, go out oil pocket and oil suction chamber, establish return opening, oil outlet and filler opening and this oil back chamber on the said valve body respectively, go out oil pocket and oil suction chamber is corresponding one by one;
Said mandrel is divided into two air chambers through the piston of being located at its end with said cylinder interior; Correspondence is provided with lifting mouth and port for drawdown respectively on this 2 air chambers; Between piston and cylinder end, be provided with and fall piston slowly, and fall mouth slowly falling slowly to be provided with on the 3rd air chamber that forms between piston and the cylinder end.
2. a kind of Pneumatic reversal valve according to claim 1 is characterized in that: said oil back chamber is two, and it is divided into said go out oil pocket and oil suction chamber two ends, and said two oil back chambers are connected through drainback passage.
3. a kind of Pneumatic reversal valve according to claim 1 is characterized in that: be connected through bolt between said cylinder and the said valve body.
4. a kind of Pneumatic reversal valve according to claim 1 is characterized in that: said return spring is arranged on the said cylinder end near valve body through spring spool and spring seat, this spring spool respectively and between the said cylinder, mandrel sealing be provided with.
5. a kind of Pneumatic reversal valve according to claim 1 is characterized in that: the said piston that falls slowly stretches out the outer adjusting nut of also installing of cylinder above that, and this falls slowly to be tightly connected between piston and the cylinder and also can in this cylinder, move around.
6. a kind of Pneumatic reversal valve according to claim 5 is characterized in that: on said cylinder, be provided with protection cylinder the said piston exposed parts that falls is slowly sealed.
7. for the control system that contains any described Pneumatic reversal valve in the claim 1 to 6; It is characterized in that: this selector valve and pump are fixed on one through affixed bolt; The return opening of said selector valve is communicated with the oil inlet pipe of pump; The oil outlet of pump is communicated with through connecting tube with the filler opening of selector valve, and the oil outlet of selector valve is connected through high-pressure oil pipe with the filler opening of oil cylinder, and pump is connected through oil pipe with hydraulic oil container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205517980U CN202418071U (en) | 2011-12-26 | 2011-12-26 | Pneumatic control reversing valve and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205517980U CN202418071U (en) | 2011-12-26 | 2011-12-26 | Pneumatic control reversing valve and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418071U true CN202418071U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205517980U Expired - Fee Related CN202418071U (en) | 2011-12-26 | 2011-12-26 | Pneumatic control reversing valve and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444639A (en) * | 2011-12-26 | 2012-05-09 | 重庆航宇实业有限公司 | Pneumatic reversing valve |
-
2011
- 2011-12-26 CN CN2011205517980U patent/CN202418071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444639A (en) * | 2011-12-26 | 2012-05-09 | 重庆航宇实业有限公司 | Pneumatic reversing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20131226 |