CN103603840B - Integrated hydraulic valve group and hydraulic driving system and concrete pump - Google Patents
Integrated hydraulic valve group and hydraulic driving system and concrete pump Download PDFInfo
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- CN103603840B CN103603840B CN201310608249.6A CN201310608249A CN103603840B CN 103603840 B CN103603840 B CN 103603840B CN 201310608249 A CN201310608249 A CN 201310608249A CN 103603840 B CN103603840 B CN 103603840B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/526—Pressure control characterised by the type of actuation electrically or electronically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/67—Methods for controlling pilot pressure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of integrated hydraulic valve group and hydraulic driving system and concrete pump.This integrated hydraulic valve group is integrated with pilot operated directional control valve, the first control valve, relief valve, the second control valve and reduction valve, time in the hydraulic driving system being applied to pumping mechanism, integrated filler opening is connected with pressure oil-source, first actuator port is connected with accumulator, and the second actuator port, the 3rd actuator port are connected with master cylinder respectively; Can the oil pressure relief of controlling water kick valve by the first control valve, therefore, when utilizing this integrated hydraulic valve group, can as required by the Maximum operating pressure of the first regulating and controlling hydraulic driving system, thus hydraulic driving system be made to meet the needs of low pressure and operations involving high pressure; In addition, compared with prior art, simpler, the processing of this hydraulic valve bank structure and safeguard more convenient.
Description
Technical field
The present invention relates to hydraulic transmission technology, be specifically related to a kind of integrated hydraulic valve group; In addition, the invention still further relates to the hydraulic driving system with this integrated hydraulic valve group and concrete pump.
Background technique
At present, on concrete pump, pumping mechanism is one of component part of core the most, it is provided with two master cylinders, two conveying cylinders, two concrete pistons, S valve, pendulum valve oil cylinder and hoppers usually, the piston rod of each master cylinder connects a concrete piston, concrete piston slides and is arranged in conveying cylinder, and pendulum valve hydraulic oil cylinder driving S valve is alternately communicated with two master cylinders; When the piston rod of master cylinder is retracted, conveying cylinder is communicated with hopper, and sucks concrete in hopper, and when piston rod stretches out, conveying cylinder is communicated with S valve, and pumps concrete.
For pumping mechanism provides the hydraulic driving system of power to be provided with hydraulic oil container, oil hydraulic pump and hydraulic valve bank, oil hydraulic pump, from hydraulic oil container inhalant liquid press pump, and through hydraulic valve bank to master cylinder, thus drives master cylinder action; Switch and master cylinder commutation function for realizing high low pressure, existing hydraulic valve bank is integrated with cartridge valve assembly, high low pressure pumping electricity consumption magnetic selector valve and high low pressure switching solenoid directional control valve, and volume is large, oil duct is complicated, the shortcoming of processing maintenance difficulty to cause this hydraulic valve bank to exist.
Summary of the invention
In view of this, the present invention proposes a kind of integrated hydraulic valve group, and compared with prior art, this integrated hydraulic valve block structure is simple, is easy to processing and maintenance.On this basis, the present invention also proposes a kind of hydraulic driving system and the concrete pump with this integrated hydraulic valve group.
On the one hand, the present invention proposes a kind of integrated hydraulic valve group, is provided with valve body, described valve body is provided with integrated filler opening, integrated return opening, the first actuator port, the second actuator port and the 3rd actuator port; Described integrated hydraulic valve group is also provided with pilot operated directional control valve, the first control valve, relief valve, the second control valve and reduction valve, described integrated filler opening is connected with relief valve import, pilot operated directional control valve P mouth respectively, and described integrated return opening exports with relief valve, pilot operated directional control valve T mouth, the second control valve T mouth are connected; Described second actuator port is connected with pilot operated directional control valve B mouth with pilot operated directional control valve A mouth, the 3rd actuator port; Described first actuator port is connected with reduction valve import, the second control valve P mouth respectively; Described first control valve P mouth exports with reduction valve and is connected, and A mouth is connected with the hydraulic control mouth of relief valve, for adjusting the oil pressure relief of described relief valve; Described second control valve A mouth, B mouth are connected with the hydraulic control mouth of pilot operated directional control valve, and described second control valve is for controlling described liquid controlled reversing valve events.
Further, described valve body is also provided with integrated drain tap, the drain tap of described reduction valve, pilot operated directional control valve is connected with integrated drain tap respectively.
Further, described first control valve is automatically controlled two-position three-way valve, and the T mouth of described automatically controlled two-position three-way valve is connected with integrated drain tap; Or described first control valve is automatically controlled on-off valve.
Further, described second control valve is automatically controlled three-position four-way valve, and when the spool of described second control valve is positioned at left position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, the cut-off of P mouth, A mouth, B mouth all with the conducting of T mouth; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
Further, described pilot operated directional control valve is three-position four-way valve, when the spool of described pilot operated directional control valve is positioned at left position, and P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth and the conducting of T mouth, A mouth, B mouth end; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
Further, described valve body is provided with the 4th actuator port, described integrated hydraulic valve group is also provided with Fill valve, the P mouth of described Fill valve is connected with integrated filler opening, and T mouth is connected with integrated return opening, and A mouth is connected with the 4th actuator port.
The integrated hydraulic valve group that the present invention proposes is integrated with pilot operated directional control valve, first control valve, relief valve, second control valve and reduction valve, time in the hydraulic driving system being applied to pumping mechanism, integrated filler opening is connected with pressure oil-source, first actuator port is connected with accumulator, second actuator port, 3rd actuator port is connected with master cylinder respectively, when the first control valve does not have conducting reduction valve and relief valve, the oil pressure relief of relief valve is determined according to self guide's spring, correspondingly, this oil pressure relief is hydraulic driving system Maximum operating pressure, pumping mechanism carries out pumpdown in this condition and is commonly called as low pressure pumping, when the first control valve conducting reduction valve and relief valve, relief valve pressure is determined according to guide's spring and hydraulic control mouth pressure simultaneously, correspondingly, this oil pressure relief is hydraulic driving system Maximum operating pressure, because the oil pressure relief under this state is higher than the former, so pumping mechanism carries out pumpdown be in this condition commonly called as high pressure pumping.According to above-mentioned analysis, this integrated hydraulic valve group can help hydraulic driving system to complete high low pressure to switch, and compared with prior art, this hydraulic valve bank structure is simpler, processing and safeguard more convenient.
On the other hand, the present invention also proposes a kind of hydraulic driving system, be provided with the integrated hydraulic valve group of oil hydraulic pump, accumulator, master cylinder and above-mentioned any one, described oil hydraulic pump is connected with the integrated filler opening of integrated hydraulic valve group, described accumulator is connected with the first actuator port, and described master cylinder is connected with the second actuator port, the 3rd actuator port.
Further, described master cylinder comprises the first oil cylinder and the second oil cylinder; The rodless cavity of described first oil cylinder is connected with the rodless cavity of the second oil cylinder, and described second actuator port is connected with the rod chamber of the first oil cylinder, and described second actuator port is connected with the rod chamber of the second oil cylinder; Or the rod chamber of described first oil cylinder is connected with the rod chamber of the second oil cylinder, described second actuator port is connected with the rodless cavity of the first oil cylinder, and described second actuator port is connected with the rodless cavity of the second oil cylinder.
Further, described valve body is provided with the 4th actuator port, described integrated hydraulic valve group is also provided with Fill valve, the P mouth of described Fill valve is connected with integrated filler opening, and T mouth is connected with integrated return opening, and A mouth is connected with the 4th actuator port; Described 4th actuator port is connected with the rod chamber of the first oil cylinder by repairing road.
Obviously, utilize above-mentioned integrated hydraulic valve group, this hydraulic driving system can complete high low pressure switching function, and, also can facilitate the maintenance of hydraulic driving system.
Another aspect, the present invention also proposes a kind of concrete pump, is provided with the hydraulic driving system of pumping mechanism and above-mentioned any one, and described master cylinder drives the concrete piston movement of described pumping mechanism.
Obviously, utilize above-mentioned hydraulic driving system that concrete pump can be made under high pressure or low pressure two states to carry out pumpdown, and provide convenient for the maintenance of concrete pump.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is one of structure principle chart of the integrated hydraulic valve group of the specific embodiment of the invention;
Fig. 2 is one of structure principle chart of the hydraulic driving system of the specific embodiment of the invention, is provided with the integrated hydraulic valve group shown in Fig. 1 in this hydraulic driving system;
Fig. 3 is the structure principle chart two of the integrated hydraulic valve group of the specific embodiment of the invention;
Fig. 4 is the structure principle chart two of the hydraulic driving system of the specific embodiment of the invention, is provided with the integrated hydraulic valve group shown in Fig. 3 in this hydraulic driving system.
Description of reference numerals:
1-integrated filler opening 2-integrated return opening 3-the second control valve 4-integrated drain tap
5-the first actuator port 6-the second actuator port 7-the three actuator port 8-relief valve
9-the first control valve 10-pilot operated directional control valve 11-reduction valve 12-the first oil cylinder
13-the second oil cylinder 14-accumulator 15-oil hydraulic pump 16-Fill valve
17-the four actuator port 18-repairing road 20-valve body
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Be described in detail below in conjunction with accompanying drawing 1 to 4 pair of specific embodiments of the invention.As shown in Figure 1, the integrated hydraulic valve group that the specific embodiment of the invention proposes is provided with valve body 20, valve body 20 is provided with integrated filler opening 1, integrated return opening 2, integrated drain tap 4, first actuator port 5, second actuator port 6 and the 3rd actuator port 7; This integrated hydraulic valve group is provided with pilot operated directional control valve 10, first control valve 9, relief valve 8, second control valve 3 and reduction valve 11, integrated filler opening 1 is connected with the P mouth of relief valve 8 import, pilot operated directional control valve 10 respectively, and integrated return opening 2 exports with relief valve 8, the T mouth of pilot operated directional control valve 10, the second control valve 3T mouth are connected; A mouth, the 3rd actuator port 7 of the second actuator port 6 and pilot operated directional control valve 10 are connected with the B mouth of pilot operated directional control valve 10; First actuator port 5 is connected with reduction valve 11 import, the second control valve 3P mouth respectively; The P mouth of the first control valve 9 exports with reduction valve 11 and is connected, and A mouth is connected with the hydraulic control mouth of relief valve 8, for adjusting the oil pressure relief of relief valve 8; A mouth, the B mouth of the second control valve 3 are connected with the hydraulic control mouth of pilot operated directional control valve 10, and the second control valve 3 is for controlling pilot operated directional control valve 10 action; The drain tap of reduction valve 11, pilot operated directional control valve 10 is connected with integrated drain tap 4 respectively.
Wherein, the first control valve 9 is two-bit triplet solenoid valve, and the T mouth of two-bit triplet solenoid valve is connected with integrated drain tap 4, and when the spool of the first control valve 9 is positioned at bottom, A mouth and the conducting of T mouth, when spool is positioned at upper, A mouth and the conducting of P mouth; Second control valve 3 is automatically controlled three-position four-way valve, and when the spool of the second control valve 3 is positioned at left position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, the cut-off of P mouth, A mouth, B mouth all with the conducting of T mouth; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.; Pilot operated directional control valve 10 is three-position four-way valve, when the spool of pilot operated directional control valve 10 is positioned at left position, and P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth and the conducting of T mouth, A mouth, B mouth end; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
Fig. 2 is the hydraulic driving system being provided with above-mentioned integrated hydraulic valve group, and this hydraulic driving system can be used on concrete pump, and it moves back and forth for driving the concrete piston of pumping mechanism.Working procedure below in conjunction with this hydraulic driving system illustrates the working principle of above-mentioned integrated hydraulic valve group.
As shown in Figure 2, this hydraulic driving system is provided with oil hydraulic pump 15, accumulator 14, master cylinder and above-mentioned integrated hydraulic valve group, oil hydraulic pump 15 is connected with the integrated filler opening 1 of integrated hydraulic valve group, accumulator 14 is connected with the first actuator port 5, and master cylinder is connected with the second actuator port 6, the 3rd actuator port 7; Master cylinder comprises the first oil cylinder 12 and the second oil cylinder 13, the rod chamber of the first oil cylinder 12 is connected by hydraulic pipe line with the rod chamber of the second oil cylinder 13, second actuator port 6 is connected with the rodless cavity of the first oil cylinder 12, and the second actuator port 6 is connected with the rodless cavity of the second oil cylinder 13.For this hydraulic driving system is in original state shown in Fig. 2, wherein, pilot operated directional control valve is in meta, and the second control valve 3 is in meta, and the first control valve 9 is operated in bottom, and the hydraulic oil of now oil hydraulic pump 15 output is through relief valve 11 oil sump tank.
When DT1 must not electricity, DT2 obtain electric time, first control valve 9 is operated in bottom, second control valve 3 is operated in left position, pressure oil in accumulator enters the left chamber of pilot operated directional control valve through the P mouth of the second control valve 3, B mouth, pressure oil orders about liquid controlled reversing valve core and moves, thus makes pilot operated directional control valve be operated in left position; Now, the hydraulic oil that oil hydraulic pump 15 exports enters the rodless cavity of the second oil cylinder 13 through the P mouth of pilot operated directional control valve, B mouth and the 3rd actuator port 7, thus the piston rod ordering about the second oil cylinder 13 stretches out; Correspondingly, the hydraulic oil in the second oil cylinder 13 rod chamber enters the rod chamber of the first oil cylinder 12, and the piston rod ordering about the first oil cylinder 12 is retracted, and the hydraulic oil in the first oil cylinder 12 rodless cavity gets back to fuel tank through pilot operated directional control valve A mouth, T mouth and integrated return opening 2.When DT1 must not electricity, DT3 obtain electric time, hydraulic oil enters from the rodless cavity of the first oil cylinder 12, and from the rodless cavity oil sump tank of the second oil cylinder 13, correspondingly, the piston rod of the first oil cylinder 12 and the second oil cylinder 13 changes moving direction.DT1 must not electricity state under, the Maximum operating pressure of hydraulic driving system is determined by guide's spring of relief valve 11; When system pressure reaches the setting value of relief valve 11, namely relief valve 11 starts overflow.
When DT1 obtains electric, the first control valve 9 is operated in upper, and accumulator internal pressure oil enters the hydraulic control mouth of relief valve 11 through reduction valve, the first control valve 9, and then heightens the oil pressure relief of relief valve 11, the final Maximum operating pressure improving hydraulic driving system.
Therefore, utilize this integrated hydraulic valve group that hydraulic driving system can be made can to adjust Maximum operating pressure as required, thus meet the needs of pumping mechanism high low pressure pumpdown.
Fig. 3 shows another kind of integrated hydraulic valve group, with Fig. 1 unlike, this integrated hydraulic valve group is also provided with the 4th actuator port 17 and Fill valve 16, and the P mouth of Fill valve 16 is connected with integrated filler opening 1, T mouth is connected with integrated return opening 2, and A mouth is connected with the 4th actuator port 17.The working principle of this integrated hydraulic valve group is described below in conjunction with hydraulic driving system.
Fig. 4 is for being provided with the structure principle chart of the hydraulic driving system of the group of integrated hydraulic valve shown in Fig. 3; As can be seen from Figure 4, this hydraulic driving system and Fig. 2 unlike, add Fill valve 16 and repairing road 18, Fill valve 16 and repairing road 18 communicated cavity to two oil cylinders 12,13 carries out repairing, prevent two oil cylinders 12,13 from causing oil cylinder stroke not in place because communicated cavity hydraulic oil reveals, and Fill valve 16 and repairing road 18 also can be replaced the hydraulic oil of the communicated cavity of two oil cylinders 12,13, prevent communicated cavity hydraulic oil high oil temperature.4th actuator port 17 of integrated hydraulic valve group is connected with the rod chamber of the first oil cylinder 12 by repairing road 18.
Certainly, automatically controlled on-off valve can also be adopted to replace above-mentioned two-position three way magnetic valve at other embodiment first control valve 9.
In addition, first oil cylinder 12, second oil cylinder 13 also can adopt following form with the annexation of integrated hydraulic valve group: the rodless cavity of the first oil cylinder 12 is connected with the rodless cavity of the second oil cylinder 13, second actuator port 6 is connected with the rod chamber of the first oil cylinder 12, and the second actuator port 6 is connected with the rod chamber of the second oil cylinder 13.
On the basis of the above, the specific embodiment of the invention also proposes a kind of concrete pump, is provided with pumping mechanism and above-mentioned hydraulic driving system, and master cylinder is for driving the concrete piston movement of pumping mechanism.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an integrated hydraulic valve group, be provided with valve body (20), described valve body (20) is provided with integrated filler opening (1), integrated return opening (2), first actuator port (5), second actuator port (6) and the 3rd actuator port (7), it is characterized in that, described integrated hydraulic valve group is also provided with pilot operated directional control valve (10), first control valve (9), relief valve (8), second control valve (3) and reduction valve (11), described integrated filler opening (1) respectively with relief valve (8) import, pilot operated directional control valve (10) P mouth connects, described integrated return opening (2) and relief valve (8) export, pilot operated directional control valve (10) T mouth, second control valve (3) T mouth connects, described second actuator port (6) is connected with pilot operated directional control valve (10) A mouth, and the 3rd actuator port (7) is connected with pilot operated directional control valve (10) B mouth, described first actuator port (5) is connected with reduction valve (11) import, the second control valve (3) P mouth respectively, described first control valve (9) P mouth exports with reduction valve (11) and is connected, and A mouth is connected with the hydraulic control mouth of relief valve (8), for adjusting the oil pressure relief of described relief valve (8), described second control valve (3) A mouth, B mouth are connected with the hydraulic control mouth of pilot operated directional control valve (10), and described second control valve (3) is for controlling described pilot operated directional control valve (10) action.
2. integrated hydraulic valve group according to claim 1, it is characterized in that, described valve body (20) is also provided with integrated drain tap (4), the drain tap of described reduction valve (11), pilot operated directional control valve (10) is connected with integrated drain tap (4) respectively.
3. integrated hydraulic valve group according to claim 2, is characterized in that, described first control valve (9) is automatically controlled two-position three-way valve, and the T mouth of described automatically controlled two-position three-way valve is connected with integrated drain tap (4); Or described first control valve (9) is automatically controlled on-off valve.
4. integrated hydraulic valve group according to claim 1, it is characterized in that, described second control valve (3) is automatically controlled three-position four-way valve, and when the spool of described second control valve (3) is positioned at left position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, the cut-off of P mouth, A mouth, B mouth all with the conducting of T mouth; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
5. integrated hydraulic valve group according to claim 1, is characterized in that, described pilot operated directional control valve (10) is three-position four-way valve, when the spool of described pilot operated directional control valve (10) is positioned at left position, and P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth and the conducting of T mouth, A mouth, B mouth end; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
6. integrated hydraulic valve group according to claim 1, it is characterized in that, described valve body (20) is provided with the 4th actuator port (17), described integrated hydraulic valve group is also provided with Fill valve (16), the P mouth of described Fill valve (16) is connected with integrated filler opening (1), T mouth is connected with integrated return opening (2), and A mouth is connected with the 4th actuator port (17).
7. a hydraulic driving system, it is characterized in that, be provided with oil hydraulic pump (15), accumulator (14), master cylinder and the integrated hydraulic valve group described in any one of claim 1 to 6, described oil hydraulic pump (15) is connected with the integrated filler opening (1) of integrated hydraulic valve group, described accumulator (14) is connected with the first actuator port (5), and described master cylinder is connected with the second actuator port (6), the 3rd actuator port (7).
8. hydraulic driving system according to claim 7, is characterized in that, described master cylinder comprises the first oil cylinder (12) and the second oil cylinder (13); The rodless cavity of described first oil cylinder (12) is connected with the rodless cavity of the second oil cylinder (13), described second actuator port (6) is connected with the rod chamber of the first oil cylinder (12), and described 3rd actuator port (7) is connected with the rod chamber of the second oil cylinder (13); Or, the rod chamber of described first oil cylinder (12) is connected with the rod chamber of the second oil cylinder (13), described second actuator port (6) is connected with the rodless cavity of the first oil cylinder (12), and described 3rd actuator port (7) is connected with the rodless cavity of the second oil cylinder (13).
9. hydraulic driving system according to claim 8, it is characterized in that, described valve body (20) is provided with the 4th actuator port (17), described integrated hydraulic valve group is also provided with Fill valve (16), the P mouth of described Fill valve (16) is connected with integrated filler opening (1), T mouth is connected with integrated return opening (2), and A mouth is connected with the 4th actuator port (17); Described 4th actuator port (17) is connected by the rod chamber of repairing road with the first oil cylinder (12).
10. a concrete pump, is characterized in that, is provided with pumping mechanism and the hydraulic driving system described in any one of claim 7 to 9, and described master cylinder drives the concrete piston movement of described pumping mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310608249.6A CN103603840B (en) | 2013-11-26 | 2013-11-26 | Integrated hydraulic valve group and hydraulic driving system and concrete pump |
| PCT/CN2014/089441 WO2015078249A1 (en) | 2013-11-26 | 2014-10-24 | Integrated hydraulic valve unit, hydraulic driving system and concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310608249.6A CN103603840B (en) | 2013-11-26 | 2013-11-26 | Integrated hydraulic valve group and hydraulic driving system and concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103603840A CN103603840A (en) | 2014-02-26 |
| CN103603840B true CN103603840B (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310608249.6A Active CN103603840B (en) | 2013-11-26 | 2013-11-26 | Integrated hydraulic valve group and hydraulic driving system and concrete pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103603840B (en) |
| WO (1) | WO2015078249A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2811242C1 (en) * | 2022-11-07 | 2024-01-11 | Сани Хэви Эквипмент Ко., Лтд. | Integrated water valve, water supply system and working machine |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603840B (en) * | 2013-11-26 | 2016-03-23 | 三一汽车制造有限公司 | Integrated hydraulic valve group and hydraulic driving system and concrete pump |
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Also Published As
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| CN103603840A (en) | 2014-02-26 |
| WO2015078249A1 (en) | 2015-06-04 |
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