CN203230645U - Dual-energy-saving combination hydraulic valve - Google Patents
Dual-energy-saving combination hydraulic valve Download PDFInfo
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- CN203230645U CN203230645U CN 201320125761 CN201320125761U CN203230645U CN 203230645 U CN203230645 U CN 203230645U CN 201320125761 CN201320125761 CN 201320125761 CN 201320125761 U CN201320125761 U CN 201320125761U CN 203230645 U CN203230645 U CN 203230645U
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Abstract
A dual-energy-saving combination hydraulic valve belongs to hydraulic parts for an engineering vehicle. The dual-energy-saving combination hydraulic valve comprises a valve body which is characterized by being combined by a load sensing priority valve and a setting pressure unloading valve. The oil inlet of the priority valve is communicated with an oil pump oil port (P) on the valve body, a priority oil port of the priority valve is connected with a steering oil port (CF) on the valve body, and the valve body is provided with a load sensing signal oil port (Ls) which is connected with both ends of the valve core of the priority valve through signal oil passages; the setting pressure unloading valve is connected to the oil passage in which surplus pressure oil in the priority valve flows into the working oil port (EF) of a feeding working system; the main oil port of the valve core of the unloading valve is connected with the working oil port (EF), a check valve is connected to the oil passage between the main oil port of the valve core of the unloading valve and the working oil port (EF), a pressure regulating valve is connected to the oil passage between one end of the valve core of the unloading valve and the check valve, and the valve core of the unloading valve is provided with an oil return passage which flows into an oil return port (T) of an oil tank. Trials show that the dual-energy-saving combination hydraulic valve can not only achieve steering system energy saving, but also achieve working system energy saving.
Description
Technical field: the utility model belongs to the engineering truck hydraulic unit, particularly a kind of dual energy-conservation assembled hydraulic valve.
Background technique: the load sensing pressure-gradient control valve that is used for the engineering truck hydraulic steering system of prior art, realized on the one hand the pressure oil of steering pump output is preferentially supplied with the load sensing commutator, the no matter variation of steering torque, it is the size of induced pressure, the height of steering wheel rotating speed all can guarantee the fuel feeding abundance; Realized on the other hand according to load sensing commutator load height, control the movement of spool through the pressure oil of load sensing signal hydraulic fluid port inflow, in the pressure oil flow of preferentially keeping commutator proper functioning needs, allow unnecessary pressure oil and the pressure oil of work oil pump output collaborate to use into the operation of supply work system, thereby it is excessive and the power loss that causes has remarkable energy saving effect to have saved the steering system fuel feeding.
The engineering truck hydraulic work system of prior art in actual use, because the difference of machine driven system working condition, objective reality the pressure oil that needs different pressures, different flow, when needing the bigger shovel of its machine driven system generation to go into power or bearing capacity in the operating mode, reality only needs the hydraulic work system that the pressure oil of high-pressure low-flow is provided.When the operating mode of pressure oil of high-pressure low-flow needing namely to occur, consider from reducing the power consumption conserve energy, the high-pressure oil of the unnecessary flow in the hydraulic work system can be flowed into fuel tank through the setting pressure unloading valve fully, thereby save the excessive and power loss that causes of work system fuel feeding.
And objective reality such energy-saving potential in the engineering truck hydraulic work system of prior art, and lack just in steering system adopt the load sensing pressure-gradient control valve energy-conservation in, when occurring only needing the hydraulic work system that the pressure oil operating mode of high-pressure low-flow is provided, the high-pressure oil of unnecessary flow is flowed into the dual energy-conservation hydraulic unit of fuel tank through setting pressure pressure unloading valve.
This shows, study and design and a kind ofly can realize that steering system is energy-conservation, can realize that again the energy-conservation dual energy-conservation assembled hydraulic valve of work system is necessary.
The model utility content: the purpose of this utility model is to overcome the deficiencies in the prior art, studies and design a kind ofly can realize that steering system is energy-conservation, can realize the dual energy-conservation assembled hydraulic valve that work system is energy-conservation again.
The utility model purpose is achieved by the following technical solution:
A kind of dual energy-conservation assembled hydraulic valve comprises valve body, it is characterized in that being combined by the load sensing pressure-gradient control valve and the setting pressure unloading valve that are installed in the valve body.
Further, described load sensing pressure-gradient control valve refers to the combination of setting pressure unloading valve: the filler opening of described load sensing pressure-gradient control valve communicates with oil pump hydraulic fluid port (P) on the valve body; The hydraulic fluid port (CF) that turns to of the supply load sensing commutator on the preferential hydraulic fluid port of load sensing pressure-gradient control valve and the valve body is connected, valve body is provided with a load sensing signal hydraulic fluid port (Ls), this load sensing signal hydraulic fluid port is connected with the spool two ends of load sensing pressure-gradient control valve by the signal oil circuit, and according to the movement of commutator load height through the pressure oil control spool of load sensing signal hydraulic fluid port inflow, the movement of load sensing pressure-gradient control valve spool changed oil pump hydraulic fluid port (P) with supply with the load sensing commutator turn to hydraulic fluid port (CF), aperture between the actuator port (EF) of supply work system, preferentially to keep the pressure oil flow while that the commutator proper functioning needs, allow unnecessary pressure oil flow flow into the actuator port (EF) of supplying with work system; Because the structure of load sensing pressure-gradient control valve and the configuration in steering system are used, and are the general knowledge that those of ordinary skill in the art knows, so give schematic illustration.
In same valve body, flow in the oil circuit of the actuator port (EF) of supplying with work system at the unnecessary pressure oil of load sensing pressure-gradient control valve, insert the setting pressure unloading valve; Setting pressure unloading valve spool master hydraulic fluid port is connected with the actuator port (EF) of supplying with work system, in near the oil circuit between pressure unloading valve spool master's hydraulic fluid port and the actuator port (EF), connect one-way valve, insert pressure regulator valve in the oil circuit of setting pressure unloading valve spool one end and one-way valve, described setting pressure unloading valve spool is provided with the backflow oil duct of the return opening (T) that flows into fuel tank.During big flow operating mode, the one-way valve that the unnecessary pressure oil that the load sensing pressure-gradient control valve is sent here is opened in the setting pressure unloading valve flows out from actuator port (EF) work system, with the pressure oil interflow work done of work system oil pump under setting pressure; Be in when work system under the operating mode of high-pressure low-flow, work system pressure surpasses by the unnecessary pressure oil that comes of steering system through the pressure near in the oil circuit between main hydraulic fluid port and the actuator port (EF) time above in the setting pressure unloading valve during pressure regulator valve setting pressure, promoting the unloading valve spool by the unnecessary pressure oil that comes of steering system through pressure regulator valve moves and opens the oil return runner, make the unnecessary pressure oil that allows the load sensing pressure-gradient control valve send here no longer enter actuator port (EF), and flow directly into the return opening (T) that connects fuel tank.
Further, described load sensing pressure-gradient control valve comprises: the spool of load sensing pressure-gradient control valve, be socketed on the control spring of spool one end of load sensing pressure-gradient control valve, apical grafting is in the transfer screw of the spool the other end of load sensing pressure-gradient control valve, and the spool end of the load sensing pressure-gradient control valve of close load sensing signal hydraulic fluid port (Ls) is connected with safety valve in valve body.
Further, an end apical grafting of described setting pressure unloading valve spool has setting pressure unloading valve valve spring, on the oil duct of the other end apical grafting in being communicated in the pressure regulator valve valve pocket of setting pressure unloading valve spool.
Further, a described end apical grafting is in the setting pressure unloading valve valve spring of setting pressure unloading valve spool end inner chamber, and its other end apical grafting has plug screw.
Further, the valve pocket one end end of described pressure regulator valve is provided with the pressure regulation double-screw bolt that setting pressure uses and the locking nut that cooperates with it, pressure regulator valve valve pocket the other end inner chamber is provided with pressure regulator valve valve seat, pressure regulator valve spool, is provided with the pressure regulator valve valve spring between the pressure regulator valve spool of pressure regulator valve valve pocket inner chamber and the pressure regulation double-screw bolt.
Further, described pressure regulator valve valve seat is provided with the oil duct that communicates with one-way valve master hydraulic fluid port.
Further, described setting pressure unloading valve leads to the one-way valve that is provided with in the passage of actuator port (EF) and includes: the one-way valve spool is matched with resetting of one-way valve spool.
Below the utility model using process is described as follows:
1, according to load sensing commutator load height, control the movement of load sensing pressure-gradient control valve spool through the pressure oil of load sensing signal hydraulic fluid port (Ls) inflow, the movement of load sensing pressure-gradient control valve spool has changed oil pump hydraulic fluid port (P) and has supplied with turning to hydraulic fluid port (CF), supplying with the aperture between the actuator port (EF) of work system of load sensing commutator, in the pressure oil of preferentially keeping commutator proper functioning needs, allow unnecessary pressure oil flow into the actuator port (EF) of supplying with work system;
2, during big flow operating mode, the one-way valve that the unnecessary pressure oil that the load sensing pressure-gradient control valve is sent here is opened in the setting pressure unloading valve flows out from actuator port (EF) work system, with the pressure oil interflow work done of work system oil pump under setting pressure; Be in when work system under the operating mode of high-pressure low-flow, work system pressure surpasses by the unnecessary pressure oil that comes of steering system through the pressure near in the oil circuit between main hydraulic fluid port and the actuator port (EF) time above in the setting pressure unloading valve during pressure regulator valve setting pressure, promoting the unloading valve spool by the unnecessary pressure oil that comes of steering system through pressure regulator valve moves and opens the oil return runner, make the unnecessary pressure oil that allows the load sensing pressure-gradient control valve send here no longer enter actuator port (EF), and flow directly into the return opening (T) that connects fuel tank.
The dual energy-conservation assembled hydraulic valve that the utility model enforcement obtains has compared with prior art shown following beneficial effect:
1, can realize that steering system is energy-conservation, can realize that again work system is energy-conservation.The dual energy-conservation assembled hydraulic valve that the utility model implements to obtain has kept the employing of the load sensing pressure-gradient control valve that is used for the engineering truck hydraulic steering system of prior art, realized on the one hand the pressure oil of steering pump output is preferentially supplied with the load sensing commutator, guaranteed hydraulic steering system fuel feeding abundance; Realized on the other hand when preferentially keeping the pressure oil flow that the commutator proper functioning needs, allowing unnecessary pressure oil flow flow into the actuator port of supplying with work system, thereby saved the excessive and power loss that causes of steering system fuel feeding; Compared with prior art increased when the high-pressure low-flow operating mode appears in work system, the high-pressure oil of the unnecessary flow in the steering system is flowed into fuel tank through setting pressure pressure unloading valve, thereby saved the excessive and power loss that causes of work system fuel feeding, realized dual energy-conservation to the engineering truck engine power.
2, prolong the engineering truck hydraulic system with oily working life, saved narrow resources, reduced oil contamination.Because the high-pressure oil of the unnecessary flow in the steering system is flowed into fuel tank through setting pressure pressure unloading valve, reduced the temperature rise of engineering truck hydraulic system with oil effectively, improved the thermal balance state of engineering truck hydraulic system, must prolong the engineering truck hydraulic system and use oily working life, narrow resources have been saved, reduce oil contamination, complied with the developing direction of green low-carbon.
3, compact structure, easy for installation, a valve multipotency has reduced customer using cost.The dual energy-conservation assembled hydraulic valve that the utility model is implemented to obtain is combined into one load sensing pressure-gradient control valve and setting pressure unloading valve, so compact structure, and is scientific and reasonable; When being used in various engineering machinery, need not to increase installing space and change the mounting point, therefore easy for installation; In addition, realize a multiple function of valve, effectively reduced customer using cost.
Description of drawings: Fig. 1 is the embodiment's asphalt principle schematic representation that meets the utility model theme; Fig. 2 is that the embodiment master who meets the utility model theme looks schematic representation; Fig. 3 is the C-C cross-sectional view among Fig. 2; Fig. 4 is the embodiment's schematic top plan view that meets the utility model theme; Fig. 5 is the B-B cross-sectional view among Fig. 4; Fig. 6 is the A-A cross-sectional view among Fig. 4.
Embodiment: implementation detail of the present utility model is described as follows below in conjunction with accompanying drawing:
As shown in Figure 1, 2, 3, a kind of dual energy-conservation assembled hydraulic valve comprises valve body 1, it is characterized in that being combined with setting pressure unloading valve 3 by the load sensing pressure-gradient control valve 2 that is installed in the valve body.
Shown in Fig. 1,2,3,4,5,6, described load sensing pressure-gradient control valve 2 refers to the combination of setting pressure unloading valve 3:
---the filler opening of described load sensing pressure-gradient control valve communicates with the oil pump hydraulic fluid port (P) on the valve body; The hydraulic fluid port (CF) that turns to of the supply load sensing commutator on the preferential hydraulic fluid port of load sensing pressure-gradient control valve and the valve body is connected, valve body 1 is provided with load sensing signal hydraulic fluid port (Ls), this load sensing signal hydraulic fluid port is connected with the spool two ends of load sensing pressure-gradient control valve by the signal oil circuit, and according to the movement of commutator load height through the pressure oil control spool of load sensing signal hydraulic fluid port inflow, the movement of load sensing pressure-gradient control valve spool changed oil pump hydraulic fluid port (P) with supply with the load sensing commutator turn to hydraulic fluid port (CF), aperture between the actuator port (EF) of supply work system radially, preferentially to keep the pressure oil flow that the commutator proper functioning needs, allow unnecessary pressure oil flow flow into the actuator port (EF) of supplying with work system simultaneously;
---in same valve body, flow in the oil circuit of the actuator port (EF) of supplying with work system at the unnecessary pressure oil of load sensing pressure-gradient control valve, insert the setting pressure unloading valve;
---setting pressure unloading valve spool master hydraulic fluid port is connected with the actuator port (EF) of supplying with work system, in near the oil circuit between main hydraulic fluid port and the actuator port (EF) and connect one-way valve 32, insert pressure regulator valve in the oil circuit of setting pressure unloading valve spool one end and one-way valve, described setting pressure unloading valve spool is provided with the backflow oil duct 311 of the return opening (T) that flows into fuel tank.
Shown in Fig. 1,3,5, described load sensing pressure-gradient control valve 2 comprises the spool 21 of load sensing pressure-gradient control valve, be socketed on the control spring 22 of spool one end of load sensing pressure-gradient control valve, apical grafting is in the transfer screw 23 of the spool the other end of load sensing pressure-gradient control valve, and the spool end of the load sensing pressure-gradient control valve of close load sensing signal hydraulic fluid port (Ls) is connected with safety valve 24 in valve body 1.
Shown in Fig. 1,3,6, an end apical grafting of described setting pressure unloading valve spool 31 has setting pressure unloading valve valve spring 34, on the oil duct 3301 of the other end apical grafting of setting pressure unloading valve spool in being communicated in pressure regulator valve valve pocket 330.A described end apical grafting is in the setting pressure unloading valve valve spring 34 of setting pressure unloading valve spool 31 ends, and its other end apical grafting has plug screw 35.The valve pocket one end end of described pressure regulator valve is provided with the pressure regulation double-screw bolt 333 that setting pressure uses and the locking nut 334 that cooperates with it, pressure regulator valve valve pocket 330 the other end inner chambers are provided with pressure regulator valve valve seat 332, pressure regulator valve spool 331, are provided with pressure regulator valve valve spring 335 between the pressure regulator valve spool of pressure regulator valve valve pocket inner chamber and the pressure regulation double-screw bolt.Described pressure regulator valve valve seat 332 is provided with the oil duct 3321 that communicates with one-way valve 32 main hydraulic fluid ports.Described setting pressure unloading valve 3 leads to the one-way valve 32 that is provided with in the passage of actuator port (EF) and includes: one-way valve spool 321 is matched with the Returnning spring 322 of one-way valve spool.
Work system is under setting pressure during big flow operating mode, because the pressure of the unnecessary pressure oil that the load sensing pressure-gradient control valve is sent here is less than the setting pressure of pressure regulator valve in the setting pressure unloading valve, the pressure of pressure oil can't---oil duct 3321---pressure regulator valve valve seat 332---the pressure regulator valve spool 331 that one-way valve 32 main hydraulic fluid ports communicate overcomes pressure regulation double-screw bolt 333 and reaches the elastic force that the locking nut 334 that cooperates is with it adjusted the pressure regulator valve valve spring of setting 335 through one-way valve master hydraulic fluid port, open pressure regulator valve in the setting pressure unloading valve, can only flow out from actuator port (EF), with the pressure oil interflow work done of work system oil pump;
Be in when work system under the operating mode of high-pressure low-flow, the pressure of the unnecessary pressure oil that the load sensing pressure-gradient control valve is sent here is greater than the setting pressure of pressure regulator valve in the setting pressure unloading valve, the pressure of pressure oil can---oil duct 3321---pressure regulator valve valve seat 332---the pressure regulator valve spool 331 that one-way valve 32 main hydraulic fluid ports communicate overcomes pressure regulation double-screw bolt 333 and reaches the elastic force that the locking nut 334 that cooperates is with it adjusted the pressure regulator valve valve spring of setting 335 through one-way valve master hydraulic fluid port, promoting pressure regulator valve spool 331 moves down,---oil duct in oil duct 3321---pressure regulator valve valve seat 332---the pressure regulator valve valve pocket 330 that one-way valve 32 main hydraulic fluid ports communicate 3301 promotes the setting pressure unloading valve spool 31 that apical graftings are being communicated on the oil duct 3301 in the pressure regulator valve valve pocket 330 and moves right along one-way valve master hydraulic fluid port, so opened the backflow oil duct 311 on the setting pressure unloading valve spool 31, the unnecessary pressure oil that the load sensing pressure-gradient control valve is sent here no longer enters actuator port (EF), and flows directly into the return opening (T) that connects fuel tank.
Claims (8)
1. a dual energy-conservation assembled hydraulic valve comprises valve body (1), it is characterized in that being combined with setting pressure unloading valve (3) by the load sensing pressure-gradient control valve (2) that is installed in the valve body.
2. dual energy-conservation assembled hydraulic valve according to claim 1 is characterized in that described load sensing pressure-gradient control valve (2) and the combination of setting pressure unloading valve (3) refer to:
---the filler opening of described load sensing pressure-gradient control valve communicates with the oil pump hydraulic fluid port (P) on the valve body; The hydraulic fluid port (CF) that turns to of the supply load sensing commutator on the preferential hydraulic fluid port of load sensing pressure-gradient control valve and the valve body is connected, valve body (1) is provided with load sensing signal hydraulic fluid port (Ls), this load sensing signal hydraulic fluid port is connected with spool (21) two ends of load sensing pressure-gradient control valve by the signal oil circuit, and according to the movement of commutator load height through the pressure oil control spool of load sensing signal hydraulic fluid port inflow, the movement of load sensing pressure-gradient control valve spool changed oil pump hydraulic fluid port (P) with supply with the load sensing commutator turn to hydraulic fluid port (CF), aperture between the actuator port (EF) of supply work system, preferentially to keep the pressure oil flow that the commutator proper functioning needs, allow unnecessary pressure oil flow flow into the actuator port (EF) of supplying with work system simultaneously;
---in same valve body, flow in the oil circuit of the actuator port (EF) of supplying with work system at the unnecessary pressure oil of load sensing pressure-gradient control valve, insert the setting pressure unloading valve;
---the main hydraulic fluid port of setting pressure unloading valve spool (31) is connected with the actuator port (EF) of supplying with work system, in near the oil circuit between main hydraulic fluid port and the actuator port (EF) and connect one-way valve (32), insert pressure regulator valve (33) in the oil circuit of setting pressure unloading valve spool one end and one-way valve, described setting pressure unloading valve spool is provided with the backflow oil duct (311) of the return opening (T) that is communicated with fuel tank.
3. dual energy-conservation assembled hydraulic valve according to claim 1, it is characterized in that described load sensing pressure-gradient control valve (2) comprising: the spool of load sensing pressure-gradient control valve (21), be socketed on the control spring (22) of spool one end of load sensing pressure-gradient control valve, apical grafting is in the transfer screw (23) of the spool the other end of load sensing pressure-gradient control valve, and the spool end of the load sensing pressure-gradient control valve of close load sensing signal hydraulic fluid port (Ls) is connected with safety valve (24) in valve body (1).
4. dual energy-conservation assembled hydraulic valve according to claim 1, an end apical grafting that it is characterized in that described setting pressure unloading valve spool (31) has setting pressure unloading valve valve spring (34), on the oil duct (3301) of the other end apical grafting of setting pressure unloading valve spool in being communicated in pressure regulator valve valve pocket (330).
5. dual energy-conservation assembled hydraulic valve according to claim 4 is characterized in that a described end apical grafting in the setting pressure unloading valve valve spring (34) of setting pressure unloading valve spool (31) end inner chamber, and its other end apical grafting has plug screw (35).
6. dual energy-conservation assembled hydraulic valve according to claim 4, valve pocket (330) the one end ends that it is characterized in that described pressure regulator valve are provided with the pressure regulation double-screw bolt (333) that setting pressure uses and the locking nut (334) that cooperates with it, pressure regulator valve valve pocket the other end inner chamber is provided with pressure regulator valve valve seat (332), pressure regulator valve spool (331), is provided with pressure regulator valve valve spring (335) between the pressure regulator valve spool of pressure regulator valve valve pocket inner chamber and the pressure regulation double-screw bolt.
7. dual energy-conservation assembled hydraulic valve according to claim 5 is characterized in that described pressure regulator valve valve seat (332) is provided with the oil duct (3321) that communicates with the main hydraulic fluid port of one-way valve (32).
8. dual energy-conservation assembled hydraulic valve according to claim 2, it is characterized in that described setting pressure unloading valve (3) leads to the one-way valve (32) that is provided with in the passage of actuator port (EF) and includes: one-way valve spool (321) is matched with the Returnning spring (322) of one-way valve spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125761 CN203230645U (en) | 2013-03-20 | 2013-03-20 | Dual-energy-saving combination hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125761 CN203230645U (en) | 2013-03-20 | 2013-03-20 | Dual-energy-saving combination hydraulic valve |
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| Publication Number | Publication Date |
|---|---|
| CN203230645U true CN203230645U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125761 Expired - Lifetime CN203230645U (en) | 2013-03-20 | 2013-03-20 | Dual-energy-saving combination hydraulic valve |
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| Country | Link |
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| CN (1) | CN203230645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148038A (en) * | 2013-03-20 | 2013-06-12 | 镇江华瑞液压机械有限公司 | Dual-energy saving combined hydraulic valve |
| CN106276685A (en) * | 2016-08-29 | 2017-01-04 | 凯迈（洛阳）测控有限公司 | Jack and combination valve |
-
2013
- 2013-03-20 CN CN 201320125761 patent/CN203230645U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148038A (en) * | 2013-03-20 | 2013-06-12 | 镇江华瑞液压机械有限公司 | Dual-energy saving combined hydraulic valve |
| CN106276685A (en) * | 2016-08-29 | 2017-01-04 | 凯迈（洛阳）测控有限公司 | Jack and combination valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |