CN203272293U - Hydraulic circuit preventing hydraulic motors from rotating reversely - Google Patents
Hydraulic circuit preventing hydraulic motors from rotating reversely Download PDFInfo
- Publication number
- CN203272293U CN203272293U CN2013203008415U CN201320300841U CN203272293U CN 203272293 U CN203272293 U CN 203272293U CN 2013203008415 U CN2013203008415 U CN 2013203008415U CN 201320300841 U CN201320300841 U CN 201320300841U CN 203272293 U CN203272293 U CN 203272293U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil hydraulic
- hydraulic motor
- pipeline
- line
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a hydraulic circuit preventing hydraulic motors from rotating reversely. The hydraulic circuit preventing the hydraulic motors from rotating reversely comprises a main oil return pipeline, an oil inlet pipeline, an oil outlet pipeline, an oil tank, an oil supplementation pump, a hydraulic pump, a magnetic exchange valve, a first hydraulic motor and a second hydraulic motor, wherein an oil inlet P of the magnetic exchange valve is communicated with the output end of the hydraulic pump through a pipeline, a work oil port A of the magnetic exchange valve is communicated with an oil inlet of the first hydraulic motor, a work oil port B of the magnetic exchange valve is communicated with an oil inlet of the second hydraulic motor, an oil return port of the first hydraulic motor and an oil return port of the second hydraulic motor are communicated with the main oil return pipeline respectively through a first oil return pipeline and a second oil return pipeline, the main oil return pipeline is connected with the input end of the hydraulic pump through a first branch pipeline, the main oil return pipeline is further communicated with a cooling pipeline through a second branch pipeline, a flush valve is arranged on the second branch pipeline, and an oil drainage port T of the magnetic exchange valve is connected to the main oil return pipeline directly through a pipeline.
Description
Technical field
The utility model relates to a kind of oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating.
Background technique
In prior art, single pump of closed type hydraulic system shown in Figure 1 drives two oil hydraulic motor work, and two oil hydraulic motors are not worked simultaneously.(1 is that flushing valve, 2 is that oil-suction oil filter, 3 is that slippage pump, 4 is that Main Hydraulic Pump, 5 is that return oil filter, 6 is that cooler, 7 is that solenoid directional control valve, 8 is that the second oil hydraulic motor, 9 is that the second one-way valve, 10 is that the first one-way valve, 11 is that the first oil hydraulic motor, 12 is that slippage pump exports oil purifier)
As can be seen from Figure 1, slippage pump 3 through oil-suction oil filter 2 from the fuel tank oil suction, export oil purifier 12 with hydraulic oil filtering by slippage pump again, fluid enters Main Hydraulic Pump 4 filler openings with the pressure of 2MPa left and right, Main Hydraulic Pump 4 further pressurizes hydraulic oil, oil inlet P and its selector valve T mouth that fluid arrives solenoid directional control valve 7 directly are connected with fuel tank, because the oil of the internal leakage of selector valve T mouth need flow into fuel tank so that pressure release.
When the Y1 of solenoid directional control valve 7 electromagnet gets when electric, the oil inlet P of solenoid directional control valve 7 and actuator port A connect, high-voltage oil liquid is transported to the first oil hydraulic motor 11, the first oil hydraulic motor 11 work, the oil return of the first oil hydraulic motor 11 is through the first one-way valve 10, most of oil return is transported to the filler opening of Main Hydraulic Pump 4, the internal leakage oil of sub-fraction oil return by flushing valve 1 and Main Hydraulic Pump 4, the first oil hydraulic motor are with the internal leakage oil of the second oil hydraulic motor, get back to fuel tank through cooler 6 and return filter 5, so that keeping system constant temperature.At this moment actuator port B communicates with selector valve T mouth, because the outlet of slippage pump 3 has the pressure of 2MPa left and right, so the second one-way valve 9 is used for preventing the second oil hydraulic motor 8 counter-rotatings here.
When the Y2 of solenoid directional control valve 7 electromagnet gets when electric, the oil inlet P of solenoid directional control valve 7 and actuator port B connect, high-voltage oil liquid is transported to the second oil hydraulic motor 8, the second oil hydraulic motor 8 work, the oil return of the second oil hydraulic motor 8 is through the second one-way valve 9, most of oil return is transported to the filler opening of Main Hydraulic Pump 4, the sub-fraction oil return is by flushing valve 1, with the internal leakage of Main Hydraulic Pump 4 oil, the first oil hydraulic motor internal leakage oil with the second oil hydraulic motor, through cooler 6 and return filter 5 oil sump tanks, so that keeping system constant temperature.Because the outlet of slippage pump 3 has the pressure of 2MPa left and right, so the first one-way valve 10 is used for preventing the first oil hydraulic motor 11 counter-rotatings here.
The first one-way valve and the second one-way valve are to prevent that fluid from flowing backwards, in case the oil hydraulic motor counter-rotating is the conventional design method of hydraulic system.But, when one-way valve fault, for example because hydraulic oil is dirty, when perhaps the one-way valve accuracy of manufacturing is not up to standard, the phenomenon of the failure of oil hydraulic motor counter-rotating can appear all, such device not only use inconvenience and also manufacture cost high.
The model utility content
When the utility model is to solve two oil hydraulic motors of closed type hydraulic system list pump driving commonly used, the problem that oil hydraulic motor counter-rotating easily occurs provides a kind of simple in structure, low cost of manufacture and can prevent the oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating of oil hydraulic motor counter-rotating.
In order to address the above problem, the utility model is achieved through the following technical solutions:
a kind of oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating of the present utility model, comprise main return line, in-line, fuel-displaced pipeline, fuel tank, slippage pump, oil hydraulic pump, solenoid directional control valve, the first oil hydraulic motor and the second oil hydraulic motor, the oil inlet P of described solenoid directional control valve is connected with the hydraulic pressure delivery side of pump by pipeline, the actuator port A of described solenoid directional control valve is connected with the filler opening of the first oil hydraulic motor, the actuator port B of solenoid directional control valve is connected with the filler opening of the second oil hydraulic motor, the return opening of described the first oil hydraulic motor and the second oil hydraulic motor is communicated with main return line by the first return line and the second return line respectively, described main return line is connected with the input end of oil hydraulic pump by the first branch line, the drain tap T of described solenoid directional control valve directly is connected on main return line by pipeline, and the filler opening of described slippage pump is communicated with fuel tank by in-line, and the oil outlet of slippage pump is communicated with described the first branch line by fuel-displaced pipeline.
Further, comprise a cooling line, described cooling line is communicated with fuel tank, and the drain tap of the drain tap of described the first oil hydraulic motor, described the second oil hydraulic motor and the drain tap of described oil hydraulic pump are connected with described cooling line by pipeline respectively.
Further, described cooling line is provided with cooler and the return oil filter that is arranged on the cooler downstream place.
Further, described in-line is provided with the first oil purifier, is provided with the second oil purifier on fuel-displaced pipeline.
Further, described main return line also is communicated with cooling line by the second branch line, and described the second branch line is provided with flushing valve.
Compared with prior art, the beneficial effects of the utility model are: owing to easy out of order two one-way valves being removed and change the oil circuit of solenoid directional control valve, not only prevent the effect of oil hydraulic motor counter-rotating, and install component and reduced, increased system reliability when having reduced manufacture cost.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of traditional closed type hydraulic system;
Fig. 2 is the hydraulic schematic diagram that prevents the oil hydraulic circuit of oil hydraulic motor counter-rotating of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
as shown in Figure 2, the oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating of the present utility model, comprise main return line 44, in-line 51, fuel-displaced pipeline 52, fuel tank 21, slippage pump 22, oil hydraulic pump 23, solenoid directional control valve 24, the first oil hydraulic motor 25 and the second oil hydraulic motor 26, the oil inlet P of solenoid directional control valve 24 is connected by the output terminal of pipeline with oil hydraulic pump 23, the actuator port A of solenoid directional control valve 24 is connected with the filler opening of the first oil hydraulic motor 25, the actuator port B of solenoid directional control valve 24 is connected with the filler opening of the second oil hydraulic motor 26, the return opening of the first oil hydraulic motor 25 and the second oil hydraulic motor 26 is communicated with main return line 44 by the first return line 42 and the second return line 43 respectively, main return line 44 is connected with the input end of oil hydraulic pump 23 by the first branch line, the drain tap T of solenoid directional control valve 24 directly is connected on main return line 44 by pipeline, the filler opening of slippage pump 22 is communicated with fuel tank 21 by in-line 51, the oil outlet of slippage pump 22 is communicated with main return line 44 by fuel-displaced pipeline 52, owing to easy out of order two one-way valves being removed and change the oil circuit of solenoid directional control valve, not only prevent the effect of oil hydraulic motor counter-rotating, and the device component reduced, increased system reliability when having reduced manufacture cost.
The oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating of the present utility model, also comprise a cooling line, cooling line is communicated with fuel tank, the drain tap of the drain tap of the drain tap of the first oil hydraulic motor 25, the second oil hydraulic motor 26 and oil hydraulic pump 23 is connected with this cooling line 46 by pipeline respectively, and cooling line 46 is provided with cooler 28 and is arranged on the first oil purifier 29 of cooler 28 downstream parts.Such cooling line can guarantee whole hydraulic circuit system constant temperature.
Of the present utility modelly prevent that the in-line of the oil hydraulic circuit of oil hydraulic motor counter-rotating is provided with the first oil purifier 31, be provided with the second oil purifier 30 on fuel-displaced pipeline, the first oil purifier purpose is to remove the impurity that enters the larger particles in hydraulic system oil liquid, and the second oil purifier has improved the filter precision of fluid.
Of the present utility modelly prevent that the main return line 44 of the oil hydraulic circuit of oil hydraulic motor counter-rotating also is communicated with cooling line 46 by the second branch line, be provided with flushing valve 27 on the second branch line, like this, further improved the systematic function of the oil hydraulic circuit that prevents the oil hydraulic motor counter-rotating.
The working principle that prevents the oil hydraulic circuit of oil hydraulic motor counter-rotating of the present utility model:
When the Y1 of solenoid directional control valve 24 electromagnet gets when electric, the oil inlet P of solenoid directional control valve 24 and actuator port A connect, high-voltage oil liquid is transported to the first oil hydraulic motor 25, the first oil hydraulic motor 25 work, the oil return major part of the first oil hydraulic motor 25 is transported to the input end of oil hydraulic pump 23 by the first return line 42 and main return line 44, the sub-fraction of oil return is oily by the leakage of the second branch line 45 and oil hydraulic pump 23, the first oil hydraulic motor 25 is with the internal leakage oil of the second oil hydraulic motor 26, get back to fuel tank 21 through cooling line 46, so that keeping system constant temperature.At this moment actuator port B communicates with drain tap T, because the drain tap T of solenoid directional control valve 24 is connected with the second oil hydraulic motor 26 return openings, so the inlet and outlet pressure of the second oil hydraulic motor 26 is equal, reliably prevents the second oil hydraulic motor 26 counter-rotatings.
When the Y2 of solenoid directional control valve 24 electromagnet gets when electric, the oil inlet P of solenoid directional control valve 24 and actuator port B connect, high-voltage oil liquid is transported to the second oil hydraulic motor 26, the second oil hydraulic motor 26 work, the oil return major part of the second oil hydraulic motor 26 is transported to the input end of oil hydraulic pump 23 by the second return line 43 and main return line 44, the sub-fraction of oil return is oily by the leakage of the second branch line 45 and oil hydraulic pump 23, the first oil hydraulic motor 25 is with the internal leakage oil of the second oil hydraulic motor 26, get back to fuel tank 21 through cooling line 46, so that keeping system constant temperature.At this moment actuator port A communicates with drain tap T, because the drain tap T of solenoid directional control valve 24 is connected with the first oil hydraulic motor 25 return openings, so the inlet and outlet pressure of the first oil hydraulic motor 25 is equal, reliably prevents the first oil hydraulic motor 25 counter-rotatings.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (5)
1. oil hydraulic circuit that prevents oil hydraulic motor counter-rotating, comprise main return line, in-line, fuel-displaced pipeline, fuel tank, slippage pump, oil hydraulic pump, solenoid directional control valve, the first oil hydraulic motor and the second oil hydraulic motor, the oil inlet P of described solenoid directional control valve is connected with the hydraulic pressure delivery side of pump by pipeline, the actuator port A of described solenoid directional control valve is connected with the inlet port of the first oil hydraulic motor, the actuator port B of solenoid directional control valve is connected with the inlet port of the second oil hydraulic motor, it is characterized in that: the return opening of described the first oil hydraulic motor and the second oil hydraulic motor is communicated with main return line by the first return line and the second return line respectively, described main return line is connected with the input end of oil hydraulic pump by the first branch line, the drain tap T of described solenoid directional control valve directly is connected on main return line by pipeline, and the filler opening of described slippage pump is communicated with fuel tank by in-line, and the oil outlet of slippage pump is communicated with described the first branch line by fuel-displaced pipeline.
2. the oil hydraulic circuit that prevents oil hydraulic motor counter-rotating according to claim 1, it is characterized in that: comprise a cooling line, described cooling line is communicated with fuel tank, and the drain tap of the drain tap of described the first oil hydraulic motor, described the second oil hydraulic motor and the drain tap of described oil hydraulic pump are connected with described cooling line by pipeline respectively.
3. the oil hydraulic circuit that prevents oil hydraulic motor counter-rotating according to claim 1, it is characterized in that: described cooling line is provided with cooler and is arranged on the return oil filter at cooler downstream place.
4. the oil hydraulic circuit that prevents oil hydraulic motor counter-rotating according to claim 1, it is characterized in that: described in-line is provided with the first oil purifier, is provided with the second oil purifier on fuel-displaced pipeline.
5. the oil hydraulic circuit that prevents oil hydraulic motor counter-rotating according to claim 2, it is characterized in that: described main return line also is communicated with cooling line by the second branch line, and described the second branch line is provided with flushing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203008415U CN203272293U (en) | 2013-05-29 | 2013-05-29 | Hydraulic circuit preventing hydraulic motors from rotating reversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203008415U CN203272293U (en) | 2013-05-29 | 2013-05-29 | Hydraulic circuit preventing hydraulic motors from rotating reversely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272293U true CN203272293U (en) | 2013-11-06 |
Family
ID=49502716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203008415U Expired - Lifetime CN203272293U (en) | 2013-05-29 | 2013-05-29 | Hydraulic circuit preventing hydraulic motors from rotating reversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272293U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989687A (en) * | 2015-06-29 | 2015-10-21 | 三一重型能源装备有限公司 | Fracturing pump hydraulic system and fracturing truck |
| CN109854570A (en) * | 2019-01-07 | 2019-06-07 | 苏州瑞奇安机电科技有限公司 | A kind of oil suction decompressor and oil suction depressurized system |
| CN112696393A (en) * | 2020-12-08 | 2021-04-23 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
-
2013
- 2013-05-29 CN CN2013203008415U patent/CN203272293U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989687A (en) * | 2015-06-29 | 2015-10-21 | 三一重型能源装备有限公司 | Fracturing pump hydraulic system and fracturing truck |
| CN109854570A (en) * | 2019-01-07 | 2019-06-07 | 苏州瑞奇安机电科技有限公司 | A kind of oil suction decompressor and oil suction depressurized system |
| CN109854570B (en) * | 2019-01-07 | 2023-09-26 | 苏州瑞奇安机电科技有限公司 | Oil absorption pressure reducing device and oil absorption pressure reducing system |
| CN112696393A (en) * | 2020-12-08 | 2021-04-23 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
| CN112696393B (en) * | 2020-12-08 | 2022-05-10 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202326531U (en) | Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof | |
| CN201982092U (en) | Height-adjusting hydraulic system of electric traction coal winning machine | |
| CN203272293U (en) | Hydraulic circuit preventing hydraulic motors from rotating reversely | |
| CN202833365U (en) | Hydraulic source return circuit energy-saving control system | |
| CN206320090U (en) | A kind of control device of high-speed hydraulic motor | |
| CN204572610U (en) | A kind of new work engine hydraulic starting valve group and the hydraulic activating system set up by it | |
| CN104944611A (en) | Water purifier and control method thereof | |
| CN102155312B (en) | Sudden stop and fuel cut-off control system of engine | |
| CN202673878U (en) | Filtering device of closed hydraulic driving system of engineering vehicle | |
| CN203476856U (en) | Engineering mechanical hydraulic oil tank with auxiliary oil tank cooling function | |
| CN104564919A (en) | Hydraulic system of wheeled tractor | |
| CN203571435U (en) | Middle relay boost pumping station | |
| CN105545878A (en) | Transient-pressure oil supply system for multi-way valve test stand | |
| CN102619815B (en) | Hydraulic system flow collector with bypass function | |
| CN202140378U (en) | Oil suction and return filter system for protecting two-way check valve | |
| CN202441674U (en) | Automatic back washing filter station | |
| CN202431647U (en) | Hydraulic pump station for tail ladle cars | |
| CN202732555U (en) | Hydraumatic crawler crane motor oil supply and system cooling device | |
| CN202640007U (en) | High-pressure cooling device for numerical control machine tool | |
| CN204041587U (en) | A kind of main pump oil suction combination unit | |
| CN104806552A (en) | Condensate pump circuit long in service life and capable of preventing pipeline erosion | |
| CN206770325U (en) | A kind of hydraulic oil supply system | |
| CN104373815A (en) | Intermediate relay booster pump station | |
| CN205001811U (en) | Lubricant station for pump | |
| CN203717413U (en) | Condensate pump circuit with long service life and pipeline erosion resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300402 Tianjin Beichen District Science and Technology Park (Yixing port) Patentee after: TIANJIN JIEQIANG POWER EQUIPMENT Co.,Ltd. Address before: 300402 Tianjin Beichen District Science and Technology Park (Yixing port) Patentee before: TIANJIN JIEQIANG POWER EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |