CN201003526Y - Hydraulic cylinder preventing self-dropping - Google Patents
Hydraulic cylinder preventing self-dropping Download PDFInfo
- Publication number
- CN201003526Y CN201003526Y CNU2006201453688U CN200620145368U CN201003526Y CN 201003526 Y CN201003526 Y CN 201003526Y CN U2006201453688 U CNU2006201453688 U CN U2006201453688U CN 200620145368 U CN200620145368 U CN 200620145368U CN 201003526 Y CN201003526 Y CN 201003526Y
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- CN
- China
- Prior art keywords
- oil
- hydraulic cylinder
- valve
- control device
- oil hydraulic
- 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
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- 239000012530 fluid Substances 0.000 claims description 24
- 239000002828 fuel tank Substances 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000009172 bursting Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 86
- 238000004880 explosion Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a anti self descending hydraulic cylinder, which comprises a hydraulic cylinder, an oil control device connected with the hydraulic cylinder used for controlling the action of hydraulic cylinder, and an air control device connected with the oil control device used for controlling the action of oil control device. The hydraulic cylinder is provided with an oil inlet and outlet opening, and a guide valve is arranged between the oil inlet and outlet opening of the hydraulic cylinder and the oil control device, and the guide valve comprises a valve inlet and a valve outlet. The inside of the guide valve is provided with an oil circuit which can control the opening and closing of the valve according to the flow amount or pressure of oil liquid. The valve inlet of the guide valve is connected with the oil control device, and the valve outlet of the guide valve is connected with the oil inlet and outlet opening of the hydraulic cylinder. When meeting the sudden situations like bursting of oil tube and cracking of gear pump, and the oil circuit in the guide valve can control the guide valve to be closed, at this moment, the oil liquid in the cylinder body of hydraulic cylinder stops flowing towards the outside and then the hydraulic cylinder stops, which avoids the producing of safety accidents due to rapid descending.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, and the prevented compartment when especially running into emergency case such as oil pipe explosion, control valve explosion in machinery such as dump truck is from the oil hydraulic cylinder that falls.
Background technique
Oil hydraulic cylinder in the existing dump truck and control loop thereof generally include oil hydraulic pump, fuel tank and other hydraulic unit.When in engineering, using dump truck, as being in lifting, middle stopping time in the compartment when situations such as oil pipe explosion, control valve explosion and gear pump burst occurring, owing to lack the oil liquid leakage that corresponding technical measures can prevent effectively that oil hydraulic cylinder is interior, this moment, the compartment will be uncontrolled be accompanied by the leakage of oil hydraulic cylinder oil and decline fast, thereby easily led to great Security accident such as hurt sb.'s feelings.
A kind of oil hydraulic cylinder that is used for hoist is disclosed among the Chinese patent CN200410089347.4, this oil hydraulic cylinder has been installed a safety installations at its oil outlet place, it utilizes the principle of common one-way valve this safety installations, by reducing the size of return opening, and reduces the rate of descent of oil hydraulic cylinder.This safety installations is made of unidirectional valve seat, nonreturn valve core, and the porose ring washer of using is installed on the wherein unidirectional valve seat, and it is spacing that this hole is used for one-way valve with ring washer, and the aperture of filler opening and return opening is inequality on the nonreturn valve core.Though above technological scheme has been alleviated the rate of descent of oil hydraulic cylinder, but when it breaks at oil pipe etc., oil hydraulic cylinder is stopped immediately, particularly when object weight that oil hydraulic cylinder bore is bigger, it is very big that the fluid speed of process return opening can become, and fluid is revealed very fast, still can not fundamentally prevent the oil hydraulic cylinder rapid drawdown, and its complex structure uses also very inconvenient.When being used in it on dumping car, because the object weight in the compartment is often bigger, it can not prevent that still unexpected decline owing to the compartment from easily leading to the generation of great Security accident such as hurt sb.'s feelings.
The model utility content
The purpose of this utility model provides a kind of oil hydraulic cylinder of self-reducing resisting, this oil hydraulic cylinder can be when running into situations such as oil pipe explosion, control valve explosion and gear pump burst, thereby prevent that effectively fluid in the oil hydraulic cylinder from revealing the generation of avoiding the security incident that causes owing to descending rapidly of oil hydraulic cylinder rapidly.
In order to realize above-mentioned model utility purpose, the utility model has adopted following technical proposals:
The utility model comprises oil hydraulic cylinder, is connected and controls the oil control device of oil hydraulic cylinder action with oil hydraulic cylinder, and is connected and controls the gas control device of this oil control device action with oil control device; Described oil hydraulic cylinder has oil inlet and outlet, wherein, oil inlet and outlet and oily the control between the device at oil hydraulic cylinder are provided with pilot valve, this pilot valve comprises valve inlet and valve export, have and to come the oil circuit of control valve switching according to fluid flow or pressure in pilot valve inside, the valve inlet of described pilot valve links to each other with oil control device, and the valve export of described pilot valve links to each other with the oil inlet and outlet of oil hydraulic cylinder.
The oil hydraulic cylinder of above-mentioned self-reducing resisting, the oil control device that is provided comprises distributing valve, fuel tank, gear pump, distributing valve comprises filler opening, return opening and oil outlet, the fluid of fuel tank through gear pump links to each other the formation oil feeding reservoirs with the filler opening of distributing valve in enters the flow channel of hydraulic cylinder body, link to each other with the fuel tank fluid that constitutes feed flow cylinder pressure cylinder body of the return opening of distributing valve is back to return flow line in the fuel tank, and the oil outlet of distributing valve is connected with the oil inlet and outlet of oil hydraulic cylinder
Described gas control device comprises gas bag and two control valves, and described gas bag is connected with described gear pump by a control valve, is connected with distributing valve by another control valve.
Because having, pilot valve inside can come the oil circuit of control valve switching according to fluid flow or pressure, therefore its can according to the flow of fluid or pressure variation, automatically regulate the switching of self valve, when running into oil pipe explosion, gear pump and sudden situation such as burst, because the flow or the pressure of fluid sharply change, at this moment, the pilot valve internal oil passages can be regulated pilot valve and close, fluid in the oil hydraulic cylinder promptly is cut off at the pilot valve place, oil hydraulic cylinder stops in realizing, and then has prevented the generation of security incident.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model;
Embodiment
Referring to Fig. 1, the utility model comprises oil control device, gas control device and oil hydraulic cylinder 6.Oil control device is connected with oil hydraulic cylinder 6, and the gas control device is connected with oil control device; It is by the action of control oil control device, and then the action of control oil hydraulic cylinder 6.
Oil control device comprises hydraulic pressure components and parts such as fuel tank 3, gear pump 4, distributing valve 5, and wherein distributing valve 5 comprises oil inlet P 5, return opening O5 and oil outlet A5.
Two fluid passages are arranged between fuel tank 3 and distributing valve 5, according to its different separately effect, the fluid that 5 directions from fuel tank 3 towards distributing valve are flowed the passage of process, be called flow channel, it is to be connected and composed through the oil inlet P 5 of gear pump 4 with distributing valve 5 by fuel tank 3, for the fluid that prevents to flow out refluxes, also is provided with common one-way valve 10 on this passage, the filler opening 101 of this common one-way valve 10 is connected with gear pump 4, and oil outlet 102 is connected with the oil inlet P 5 of distributing valve 5; The fluid that 3 directions from distributing valve 5 towards fuel tank are flowed the passage of process, be called the return flow line, it is that return opening O5 by distributing valve 5 is communicated with fuel tank 3 and constitutes, oil hydraulic cylinder 6 interior fluid can be in this passage be back to fuel tank 3.
The gas control device comprises air pressure components and parts such as gas bag 1, control valve 2, control valve 7.Wherein, control valve 2 has three outlets and promptly exports A2, outlet B2, outlet C2, gas bag 1 is connected with the valve inlet P2 of control valve 2 by tracheae, three of control valve 2 outlet A2, B2, C2 are connected with valve switch on the distributing valve 5 respectively, make control valve 2 actions can realize controlling the closing and commutating of valve of distributing valve 5 by operation gas bag 1.
In the utility model, between distributing valve 5 and oil hydraulic cylinder 6, connect a pilot valve 12, this pilot valve 12 comprises filler opening 121, oil outlet 122, be provided with the oil circuit 123 of may command fluid flow in pilot valve 12 inside, wherein, its filler opening 121 links to each other with the oil outlet A5 of distributing valve 5, and its oil outlet 122 is connected with the oil inlet and outlet of oil hydraulic cylinder 6.
When oil hydraulic cylinder 6 is in the working state of rising, operation gas bag 1, gear pump 4 starts under the effect of control valve 7, the fluid that drives in the fuel tank 3 flows into pilot valve 12 through the filler opening 121 of one-way valve 10, distributing valve 5, pilot valve 12 successively, then flow out in the cylinder body that arrives oil hydraulic cylinder 6 from oil outlet 122, at this moment, the piston in the oil hydraulic cylinder 6 rises.
When oil hydraulic cylinder 6 is in the working state of decline, operation gas bag 1, gear pump 4 cuts out under the effect of control valve 7, because pilot valve 12 itself has the conducting function of positive and negative both direction, at this moment, the fluid in oil hydraulic cylinder 6 cylinder bodies is under the piston action of gravity, form pressure oil, pilot valve is opened, and after the return flow line flow in the fuel tank 3.
When running into improper situation, promptly run into situations such as oil pipe explosion or gear pump 4 burst, because there is the oil circuit 123 that can regulate the switching of self valve according to the flow of fluid or pressure pilot valve 12 inside, at this moment, because the fluid flow of the pilot valve 12 of flowing through sharply rises or pressure sharply descends, pilot valve 12 is regulated its internal oil passages 123, will close automatically, fluid in the oil hydraulic cylinder promptly is cut off in its position, at this moment, stops in the oil hydraulic cylinder.
When the utility model is used in the dumping car, thereby since oil hydraulic cylinder 6 link to each other with the compartment support on the compartment rise, decline or in stop, when running into oil pipe explosion, gear pump and sudden situation such as burst, because oil hydraulic cylinder 6 stops in time realizing, therefore, the position is thereon and for compartment that it supported stops in also can in time realizing, avoided since the compartment descend the security incident that may cause.
Claims (3)
1, a kind of oil hydraulic cylinder of self-reducing resisting comprises oil hydraulic cylinder, is connected and controls the oil control device of oil hydraulic cylinder action with described oil hydraulic cylinder, and controls the gas control device that device is connected and controls this oil control device action with described oil; Described oil hydraulic cylinder has oil inlet and outlet, it is characterized in that, oil inlet and outlet and oily the control between the device at described oil hydraulic cylinder are provided with pilot valve, this pilot valve comprises valve inlet and valve export, have and to come the oil circuit of control valve switching according to fluid flow or pressure in pilot valve inside, the valve inlet of described pilot valve links to each other with oil control device, and the valve export of described pilot valve links to each other with the oil inlet and outlet of oil hydraulic cylinder.
2, the oil hydraulic cylinder of self-reducing resisting as claimed in claim 1, it is characterized in that, described oil control device comprises distributing valve, fuel tank, gear pump, described distributing valve comprises filler opening, return opening and oil outlet, the fluid of described fuel tank through gear pump links to each other the formation oil feeding reservoirs with the filler opening of distributing valve in enters the flow channel of hydraulic cylinder body, link to each other with the fuel tank fluid that constitutes feed flow cylinder pressure cylinder body of the return opening of described distributing valve is back to return flow line in the fuel tank, and the oil outlet of distributing valve is connected with the oil inlet and outlet of oil hydraulic cylinder.
3, the oil hydraulic cylinder of self-reducing resisting as claimed in claim 2 is characterized in that, described gas control device comprises gas bag and two control valves, and described gas bag is connected with described gear pump by a control valve, is connected with distributing valve by another control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201453688U CN201003526Y (en) | 2006-12-28 | 2006-12-28 | Hydraulic cylinder preventing self-dropping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201453688U CN201003526Y (en) | 2006-12-28 | 2006-12-28 | Hydraulic cylinder preventing self-dropping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003526Y true CN201003526Y (en) | 2008-01-09 |
Family
ID=39039063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201453688U Expired - Fee Related CN201003526Y (en) | 2006-12-28 | 2006-12-28 | Hydraulic cylinder preventing self-dropping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003526Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963686A (en) * | 2013-01-24 | 2014-08-06 | 姚天锡 | Back-tipping dumper with safety support |
| CN106051145A (en) * | 2016-05-31 | 2016-10-26 | 王付民 | Vehicle door opening walking forbidding system |
| CN110259742A (en) * | 2019-06-24 | 2019-09-20 | 广东冠邦科技有限公司 | Overturn vehicle gas-liquid automatic control system and overturning vehicle |
-
2006
- 2006-12-28 CN CNU2006201453688U patent/CN201003526Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963686A (en) * | 2013-01-24 | 2014-08-06 | 姚天锡 | Back-tipping dumper with safety support |
| CN103963686B (en) * | 2013-01-24 | 2016-11-16 | 姚天锡 | A kind of rear turning type dumper having safe support |
| CN106051145A (en) * | 2016-05-31 | 2016-10-26 | 王付民 | Vehicle door opening walking forbidding system |
| CN110259742A (en) * | 2019-06-24 | 2019-09-20 | 广东冠邦科技有限公司 | Overturn vehicle gas-liquid automatic control system and overturning vehicle |
| CN110259742B (en) * | 2019-06-24 | 2021-12-10 | 广东冠邦科技有限公司 | Automatic gas-liquid control system of turnover vehicle and turnover vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: ZHUMADIAN ZHONGJI HUAJUN VEHICLE CO., LTD. ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Zhumadian CIMC Chun Chun vehicle Co., Ltd. Number: 02 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Zhumadian CIMC Chun Chun vehicle Co., Ltd. Number: 02 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: ZHUMADIAN ZHONGJI HUAJUN VEHICLE CO., LTD. ^ |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |