CN2644614Y - Pneumatic opening device for engine cover hood of engineering vehicle - Google Patents
Pneumatic opening device for engine cover hood of engineering vehicle Download PDFInfo
- Publication number
- CN2644614Y CN2644614Y CNU032774893U CN03277489U CN2644614Y CN 2644614 Y CN2644614 Y CN 2644614Y CN U032774893 U CNU032774893 U CN U032774893U CN 03277489 U CN03277489 U CN 03277489U CN 2644614 Y CN2644614 Y CN 2644614Y
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- China
- Prior art keywords
- way
- tracheae
- hood
- opening device
- rotary valve
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- Expired - Fee Related
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Abstract
The utility model relates to a hood pneumatic open device for construction vehicle engine, the device comprises a pair of dropping control cylinders, a one-way throttle speed control valve is arranged on the upper end air hatches of the two dropping control cylinders seperately, the two valves are communicated with a T-shaped tee joint by a plurality of air pipes, the T-type tee joint is communicated with one interface of a three position four-way manual valve via an air pipe; in addition, a one-way throttle speed control valve is arranged on the lower end air hatches of the two dropping control cylinders separately, the two valves are communicated with another T-shaped tee joint, the T-shaped tee joint is communicated with the other interface of the three position four-way manual valve via another air pipe. When the device is working, compressed air is used as the driving force, the three position four-way manual valve is used as the control switch, the two dropping control cylinders are the actuator, the upper and the lower end of the dropping control cylinders are separately connected with the hood and the rack plan.
Description
Technical field
The utility model relates to a kind of opening device that Engine Casing is opened, the pneumatic opening device of especially a kind of engineering vehicle engine hood.
Background technology
The engineering truck vehicle often will require jacking system necessary safe and reliable more than 150 kilograms hood jack-up when maintenance or maintenance.At present general employing the: (1) air spring: this device relies on nitrogen compression masterpiece intrinsic in air spring to be power source, and in light weight, volume is little, and is cheap, but must manually-operated, and nitrogen is in case leak, and device is just scrapped, and only is suitable for small-sized hood use.(2) electric device: this device uses electric pushrod or electric shift case to open hood, and operation easily do not pollute, but its volume is big, the quality instability.(3) realize lifting with hydraulic jack, but the cost height, very easily leakage pollutes.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of safe and reliable, easy to operate, dexterous attractive in appearance, steady quality, pollution-free, the pneumatic opening device of engineering vehicle engine hood that cost is low.
The technical solution of the utility model is such: this device adopts the compressed air of process filtration as power source, with the manual rotary valve of 3-position 4-way as gauge tap, with anti-fall cylinder as executing agency, communicated by tracheae between them, the upper and lower side of anti-fall cylinder joins with hood, frame plane separately.
Because adopt above technical scheme, its effect is conspicuous:
1, owing to being power, so, equipment and environment are not had pollution, compliance with environmental protection requirements yet even produce leakage with the air.
2, easy to operate, adjustable-speed, safe and reliable, overcome electro hydraulic gear can't be opened hood when motor damages shortcoming.
3, simple in structure light and handy, cheap, easy for installation.
4, long service life.
Description of drawings
Fig. 1 is the utility model structure chart.
Fig. 2 opens hood for the utility model and closes the state diagram of hood.
Among the figure: 1, ears ring bearing 2, monaural ring connector 3, anti-fall pin 4, piston rod 5, anti-fall cylinder 6, monaural ring support 7, one-way throttle valve 8, T type tee junction 9, tracheae 10, sound absorber 11, the manual rotary valve 12 of 3-position 4-way, compressed air filter pressure regulator valve 13, interface 14, air supply opening 15, joint 16, exhaust opening 17, hood
The specific embodiment
With reference to Fig. 1, Fig. 2, this device comprises a pair of anti-fall cylinder (5), anti-fall cylinder (5) the packing left and right sides, and its upper and lower end joins with hood, frame plane separately.The upper end gas port of anti-fall cylinder respectively is equipped with an one-way throttle valve (7), two flow speed control valves are connected with a T type tee junction (8) through tracheae (9), T type tee junction (8) is connected with the interface (13) of the manual rotary valve of 3-position 4-way (11) through a tracheae (9) again, in addition, the lower end gas port of a pair of anti-fall cylinder respectively is equipped with an one-way throttle valve (7), two valves are connected with another T type tee junction (8) through tracheae (9), and T type tee junction (8) is connected with another interface (15) of the manual rotary valve of 3-position 4-way (11) through another root tracheae (9) again.The air supply opening of the manual rotary valve of 3-position 4-way (14) filters pressure regulator valve (12) by tracheae (9) with the compressed air in its left side and is connected, and it is compressed air inlet that compressed air filters the pressure regulator valve left side.The exhaust opening (16) on the manual rotary valve of 3-position 4-way (11) right side is connected with the sound absorber (10) that is provided with.For safety, the upper end of anti-fall cylinder (5) also is provided with anti-fall pin (3).Anti-fall cylinder upper end links to each other with hood (17) is inboard by ears ring bearing (1) and monaural ring connector (2), and the lower end links to each other with the frame plane by monaural ring bearing (6) and ears ring bearing (1).
With reference to Fig. 2, the head edge of hood (17) and frame plane are arranged on anti-fall cylinder the left and right sides of something or somebody to fall back on portion in the hood for being hinged.In the time will opening hood, as long as the handle of the manual rotary valve of 3-position 4-way (11) is turned right, at this moment, this valve interface (13) communicates with exhaust opening (16), and compressed air is pressed into from air supply opening (14), and interface (15) is opened, compressed air enters the bottom of anti-fall cylinder (5) along tracheae (9), with piston rod (4) jack-up slowly, simultaneously with hood (17) jack-up, the air on cylinder top is discharged by exhaust opening (16).If two cylinder operation speed differ, then can regulate one-way throttle valve (7) respectively, make the speed of two-cylinder piston bar (4) rising or decline reach consistent.After hood (17) was opened to desired location, the anti-fall pin (3) of anti-fall cylinder upper end tacked piston rod immediately, and piston rod can not be moved up and down, and the repairman can carry out working service or maintenance, needn't worry that hood can plunk down.When repairing finishes, in the time of hood need being fallen again, only need the handle of the manual rotary valve of 3-position 4-way (11) is turned left, at this moment, compressed air is at first opened anti-fall pin, get so that piston rod falls, by above-mentioned same principle, the air inlet of anti-fall cylinder internal upper part, bottom exhaust, piston rod slowly falls, and hood resets.When handle forwards the centre position to, then piston can not rise, and can not descend, and hood is in safely closes lock-out state.
Claims (4)
1, a kind of pneumatic opening device of journey vehicle motor hood of going up.This device has a pair of anti-fall cylinder (5), on the anti-fall cylinder, the lower end is connected with a manual rotary valve of 3-position 4-way (11) by tracheae (9) respectively, the upper end gas port that it is characterized in that a pair of anti-fall cylinder respectively is equipped with an one-way throttle valve (7), and two valves are connected with a T type tee junction (8) through tracheae (9), T type tee junction (8) is connected with the interface (13) of the manual rotary valve of 3-position 4-way (11) through a tracheae (9) again, in addition, the lower end gas port of a pair of anti-fall cylinder respectively is equipped with an one-way throttle valve (7), two valves are connected with another T type tee junction (8) through tracheae (9), T type tee junction (8) is connected with the interface (15) of the manual rotary valve of 3-position 4-way (11) through another root tracheae (9) again, and the air supply opening of the manual rotary valve of 3-position 4-way (14) filters pressure regulator valve (12) by tracheae (9) with the compressed air in left side and is connected.
2, the pneumatic opening device of engineering vehicle engine hood according to claim 1, the upper end that it is characterized in that anti-fall cylinder (5) is provided with and inboard ears ring bearing (1) and the monaural ring connector (2) that links to each other of hood (17), and the lower end is provided with monaural ring bearing (6) and the ears ring bearing (1) that links to each other with the frame plane.
3, the pneumatic opening device of engineering vehicle engine hood according to claim 1 is characterized in that anti-fall cylinder (5) upper end also is provided with anti-fall pin (3).
4, the pneumatic opening device of engineering vehicle engine hood according to claim 1 is characterized in that the exhaust opening (16) on the manual rotary valve of 3-position 4-way (11) right side is connected with the sound absorber (10) that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032774893U CN2644614Y (en) | 2003-08-08 | 2003-08-08 | Pneumatic opening device for engine cover hood of engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032774893U CN2644614Y (en) | 2003-08-08 | 2003-08-08 | Pneumatic opening device for engine cover hood of engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2644614Y true CN2644614Y (en) | 2004-09-29 |
Family
ID=34302835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032774893U Expired - Fee Related CN2644614Y (en) | 2003-08-08 | 2003-08-08 | Pneumatic opening device for engine cover hood of engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2644614Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299806A (en) * | 2017-06-23 | 2017-10-27 | 成都创科升电子科技有限责任公司 | A kind of fluid pressure type bonnet lifting apparatus |
-
2003
- 2003-08-08 CN CNU032774893U patent/CN2644614Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299806A (en) * | 2017-06-23 | 2017-10-27 | 成都创科升电子科技有限责任公司 | A kind of fluid pressure type bonnet lifting apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |