CN103603840A - Integrated hydraulic valve group and hydraulic drive system and concrete pump - Google Patents
Integrated hydraulic valve group and hydraulic drive system and concrete pump Download PDFInfo
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- CN103603840A CN103603840A CN201310608249.6A CN201310608249A CN103603840A CN 103603840 A CN103603840 A CN 103603840A CN 201310608249 A CN201310608249 A CN 201310608249A CN 103603840 A CN103603840 A CN 103603840A
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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
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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
- F15B2211/67—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 an integrated hydraulic valve group and a hydraulic drive system and a concrete pump. The integrated hydraulic valve group integrally comprises a hydraulic reversing valve, a first control valve, a relief valve, a second control valve and a pressure relief valve. When the integrated hydraulic valve group is applied in the hydraulic drive system of a pumping mechanism, an integral oil inlet is connected to a pressure oil source, a first working oil port is connected to an accumulator, and a second working oil port and a third working oil port are respectively connected to a main cylinder. The relief pressure of the relief valve can be controlled through the first control valve, thus, when the integrated hydraulic valve group is operated, the highest working pressure of the hydraulic drive system can be adjusted through the first control valve as required, so that requirements of low-pressure and high-pressure operations on the hydraulic drive system can be met; in addition, compared with the prior art, the integrated hydraulic valve group has the advantages of more simple structure and facilitated machining and maintenance.
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 hydraulic driving system and the concrete pump with this integrated hydraulic valve group.
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 conventionally, the piston rod of each master cylinder connects a concrete piston, concrete piston slides to be arranged at and carries in 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, carry cylinder to be communicated with hopper, and suck concrete in hopper, when piston rod stretches out, carry cylinder to be communicated with S valve, and pump concrete.
For pumping mechanism provides the hydraulic driving system of power, be provided with hydraulic oil container, oil hydraulic pump and hydraulic valve bank, oil hydraulic pump is from hydraulic oil container inhalant liquid press pump, and through hydraulic valve bank to master cylinder, thereby drive master cylinder action; For realizing high low pressure, switch and master cylinder commutation function, existing hydraulic valve bank is integrated cartridge valve assembly, high low pressure pumping electricity consumption magnetic selector valve and high low pressure switching solenoid directional control valve, causes this hydraulic valve bank to have the shortcoming that volume is large, oil duct is complicated, processing maintenance is difficult.
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 group is simple in structure, is easy to processing and maintenance.On this basis, the present invention also proposes a kind of hydraulic driving system and 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, is provided with integrated filler opening, integrated return opening, the first actuator port, the second actuator port and the 3rd actuator port on described valve body; In described integrated hydraulic valve group, be 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 is connected with relief valve outlet, pilot operated directional control valve T mouth, the second control valve T mouth; Described the 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 the first actuator port is connected with reduction valve import, the second control valve P mouth respectively; Described the first control valve P mouth is connected with reduction valve outlet, and A mouth is connected with the hydraulic control mouth of relief valve, for adjusting the oil pressure relief of described relief valve; Described the second control valve A mouth, B mouth are connected with the hydraulic control mouth of pilot operated directional control valve, and described the second control valve is used for controlling described liquid controlled reversing valve events.
Further, be also provided with integrated drain tap on described valve body, the drain tap of described reduction valve, pilot operated directional control valve is connected with integrated drain tap respectively.
Further, described the first control valve is automatically controlled two-bit triplet, and the T mouth of described automatically controlled two-position three-way valve is connected with integrated drain tap; Or described the first control valve is automatically controlled on-off valve.
Further, described the second control valve is automatically controlled three-position four-way valve, and the spool of described the second control valve is positioned at left when position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth by, 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 by; When spool is positioned at right position, P mouth and the conducting of A mouth, T mouth and the conducting of B mouth.
Further, be provided with the 4th actuator port on described valve body, in described integrated hydraulic valve group, be 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, the first control valve, relief valve, the second control valve and reduction valve, while being applied in the hydraulic driving system of pumping mechanism, integrated filler opening is connected with pressure oil-source, the first actuator port is connected with accumulator, the second actuator port, the 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 and is commonly called as low pressure pumping under this state, 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 carrying out pumpdown under this state, pumping mechanism is commonly called as high pressure pumping.Known 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 the first oil cylinder is connected with the rodless cavity of the second oil cylinder, and described the second actuator port is connected with the rod chamber of the first oil cylinder, and described the second actuator port is connected with the rod chamber of the second oil cylinder; Or the rod chamber of described the first oil cylinder is connected with the rod chamber of the second oil cylinder, described the second actuator port is connected with the rodless cavity of the first oil cylinder, and described the second actuator port is connected with the rodless cavity of the second oil cylinder.
Further, be provided with the 4th actuator port on described valve body, in described integrated hydraulic valve group, be 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 the 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 can make concrete pump carry out pumpdown under high pressure or low pressure two states, and facilitate for the maintenance of concrete pump.
Accompanying drawing explanation
The accompanying drawing that forms 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 is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is one of the structure principle chart of the integrated hydraulic valve group of the specific embodiment of the invention;
Fig. 2 is one of the 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 be the specific embodiment of the invention integrated hydraulic valve group structure principle chart two;
Fig. 4 be the specific embodiment of the invention hydraulic driving system structure principle chart two, in this hydraulic driving system, be provided with the integrated hydraulic valve group shown in Fig. 3.
Description of reference numerals:
1-integrated filler opening 2-integrated return opening the 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 the 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, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Below in conjunction with 1 to 4 pair of specific embodiments of the invention of accompanying drawing, be elaborated.As shown in Figure 1, the integrated hydraulic valve group that the specific embodiment of the invention proposes is provided with valve body 20, is provided with integrated filler opening 1, integrated return opening 2, integrated drain tap 4, the first actuator port 5, the second actuator port 6 and the 3rd actuator port 7 on valve body 20; In this integrated hydraulic valve group, be provided with pilot operated directional control valve 10, the first control valve 9, relief valve 8, the second control valve 3 and reduction valve 11, integrated filler opening 1 is connected with the P mouth of relief valve 8 imports, pilot operated directional control valve 10 respectively, and integrated return opening 2 is connected with relief valve 8 outlets, the T mouth of pilot operated directional control valve 10, the second control valve 3T mouth; The second actuator port 6 is connected with the B mouth of pilot operated directional control valve 10 with A mouth, the 3rd actuator port 7 of pilot operated directional control valve 10; The first actuator port 5 is connected with reduction valve 11 imports, the second control valve 3P mouth respectively; The P mouth of the first control valve 9 is connected with reduction valve 11 outlets, and A mouth is connected with the hydraulic control mouth of relief valve 8, for adjusting the oil pressure relief of relief valve 8; The A mouth of the second control valve 3, B mouth 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 actions; 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 the spool of the first control valve 9 is positioned at when the next, A mouth and the conducting of T mouth, and spool is positioned at when upper, A mouth and the conducting of P mouth; The second control valve 3 is automatically controlled three-position four-way valve, and the spool of the second control valve 3 is positioned at left when position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth by, 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 by; 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 that is provided with above-mentioned integrated hydraulic valve group, and this hydraulic driving system can be used on concrete pump, and it is for driving the concrete piston of pumping mechanism to move back and forth.The working principle of above-mentioned integrated hydraulic valve group is described below in conjunction with the working procedure of this hydraulic driving system.
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, the 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.Shown in Fig. 2, be this hydraulic driving system in original state, wherein, pilot operated directional control valve is in meta, the second control valve 3 is in meta, the first control valve 9 is operated in the next, the hydraulic oil of now oil hydraulic pump 15 output is through relief valve 11 oil sump tanks.
When DT1 must not electricity, DT2 obtains when electric, the first control valve 9 is operated in the next, the second control valve 3 is operated in left position, pressure oil in accumulator is through the P mouth of the second control valve 3, the left chamber that B mouth enters pilot operated directional control valve, pressure oil orders about liquid controlled reversing valve core and moves, thereby makes pilot operated directional control valve be operated in left position; Now, the hydraulic oil of oil hydraulic pump 15 output enters the rodless cavity of the second oil cylinder 13 through the P of pilot operated directional control valve mouth, B mouth and the 3rd actuator port 7, thereby the piston rod that orders about the second oil cylinder 13 stretches out; Correspondingly, the hydraulic oil in the second oil cylinder 13 rod chambers enters the rod chamber of the first oil cylinder 12, orders about the piston rod of the first oil cylinder 12 and retracts, and the hydraulic oil in the first oil cylinder 12 rodless cavities is got 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 obtains when electric, hydraulic oil enters from the rodless cavity of the first oil cylinder 12, 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, relief valve 11 starts overflow.
When DT1 obtains when 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, finally improves the Maximum operating pressure of hydraulic driving system.
Therefore, utilize this integrated hydraulic valve group can make hydraulic driving system can adjust as required Maximum operating pressure, thereby meet the needs of pumping mechanism high low pressure pumping operation.
Fig. 3 shows another kind of integrated hydraulic valve group, different from Fig. 1, 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 the structure principle chart that is provided with the hydraulic driving system of the group of integrated hydraulic valve shown in Fig. 3; As can be seen from Figure 4, what this hydraulic driving system was different from Fig. 2 is, Fill valve 16 and repairing road 18 have been increased, the communicated cavity of 18 pairs of two oil cylinders 12,13 in Fill valve 16 and repairing road carries out repairing, prevent that two oil cylinders 12,13 from revealing and to cause oil cylinder stroke not in place because of communicated cavity hydraulic oil, 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, switching power chamber hydraulic oil oil temperature is too high.The 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, at other embodiment's first control valve 9, can also adopt automatically controlled on-off valve to replace above-mentioned two-position three way magnetic valve.
In addition, the annexation of the first oil cylinder 12, the second oil cylinder 13 and integrated hydraulic valve group also can adopt following form: the rodless cavity of the first oil cylinder 12 is connected with the rodless cavity of the second oil cylinder 13, the 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, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an integrated hydraulic valve group, be provided with valve body (20), on described valve body (20), be provided with integrated filler opening (1), integrated return opening (2), the first actuator port (5), the second actuator port (6) and the 3rd actuator port (7), it is characterized in that, in described integrated hydraulic valve group, be also provided with pilot operated directional control valve (10), the first control valve (9), relief valve (8), the 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) outlet, pilot operated directional control valve (10) T mouth, the second control valve (3) T mouth connects, described the 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 the first actuator port (5) is connected with reduction valve (11) import, the second control valve (3) P mouth respectively, described the first control valve (9) P mouth is connected with reduction valve (11) outlet, 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 the second control valve (3) A mouth, B mouth are connected with the hydraulic control mouth of pilot operated directional control valve (10), and described the second control valve (3) is for controlling described pilot operated directional control valve (10) action.
2. integrated hydraulic valve group according to claim 1, is characterized in that, is also provided with integrated drain tap (4) on described valve body (20), and 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 the first control valve (9) is automatically controlled two-bit triplet, and the T mouth of described automatically controlled two-position three-way valve is connected with integrated drain tap (4); Or described the first control valve (9) is automatically controlled on-off valve.
4. integrated hydraulic valve group according to claim 1, is characterized in that, described the second control valve (3) is automatically controlled three-position four-way valve, and the spool of described the second control valve (3) is positioned at left when position, P mouth and the conducting of B mouth, A mouth and the conducting of T mouth; When spool is positioned at meta, P mouth by, 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 by; 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, on described valve body (20), be provided with the 4th actuator port (17), in described integrated hydraulic valve group, be 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 the integrated hydraulic valve group described in oil hydraulic pump (15), accumulator (14), master cylinder and claim 1 to 6 any one, 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 the first oil cylinder (12) is connected with the rodless cavity of the second oil cylinder (13), and described the second actuator port (6) is connected with the rod chamber of the first oil cylinder (12), and described the 3rd actuator port (7) is connected with the rod chamber of the second oil cylinder (13); Or the rod chamber of described the first oil cylinder (12) is connected with the rod chamber of the second oil cylinder (13), described the second actuator port (6) is connected with the rodless cavity of the first oil cylinder (12), and described the 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, on described valve body (20), be provided with the 4th actuator port (17), in described integrated hydraulic valve group, be 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 the 4th actuator port (17) is connected with the rod chamber of the first oil cylinder (12) by repairing road.
10. a concrete pump, is characterized in that, is provided with the hydraulic driving system described in pumping mechanism and claim 7 to 9 any one, 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 true CN103603840A (en) | 2014-02-26 |
| CN103603840B 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 (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078249A1 (en) * | 2013-11-26 | 2015-06-04 | 三一汽车制造有限公司 | Integrated hydraulic valve unit, hydraulic driving system and concrete pump |
| CN106402076A (en) * | 2016-12-01 | 2017-02-15 | 三汽车制造有限公司 | Integrated valve set, hydraulic driving system and concrete pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078249A1 (en) * | 2013-11-26 | 2015-06-04 | 三一汽车制造有限公司 | Integrated hydraulic valve unit, hydraulic driving system and concrete pump |
| CN106640826A (en) * | 2016-11-11 | 2017-05-10 | 三汽车制造有限公司 | Integrated hydraulic valve group as well as hydraulic driving system provided with valve group and concrete pump |
| CN106640826B (en) * | 2016-11-11 | 2018-10-02 | 三一汽车制造有限公司 | Integrated hydraulic valve group and the fluid power system and concrete pump that the valve group is set |
| CN106402076A (en) * | 2016-12-01 | 2017-02-15 | 三汽车制造有限公司 | Integrated valve set, hydraulic driving system and concrete pump |
| CN106438554A (en) * | 2016-12-01 | 2017-02-22 | 三汽车制造有限公司 | Integrated valve bank, hydraulic driving system and concrete pump |
| CN106402076B (en) * | 2016-12-01 | 2018-01-02 | 三一汽车制造有限公司 | Integrated valve group, fluid power system and concrete pump |
| CN107139908B (en) * | 2017-05-27 | 2024-01-23 | 徐工集团工程机械股份有限公司科技分公司 | Hand brake valve assembly with output oil source |
| CN107139908A (en) * | 2017-05-27 | 2017-09-08 | 徐工集团工程机械股份有限公司科技分公司 | It is a kind of that there is the hand brake valve assembly for exporting oil sources |
| CN109209843A (en) * | 2018-09-30 | 2019-01-15 | 中国有色(沈阳)泵业有限公司 | A kind of diaphragm pump hydraulic power end |
| CN110030222A (en) * | 2019-05-16 | 2019-07-19 | 中冶赛迪工程技术股份有限公司 | Its hydraulic system of a kind of differential hydraulic control loop of fluid control valve and application |
| CN110030222B (en) * | 2019-05-16 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Differential hydraulic control loop of hydraulic control gate valve and hydraulic system using same |
| CN113217500B (en) * | 2021-06-10 | 2023-12-12 | 徐州徐工液压件有限公司 | Time sharing multi-way valve |
| CN113217500A (en) * | 2021-06-10 | 2021-08-06 | 徐州徐工液压件有限公司 | Time sharing multi-way valve |
| CN113682985A (en) * | 2021-09-09 | 2021-11-23 | 大洋泊车股份有限公司 | Method for adjusting perpendicularity of telescopic arm of elevating platform fire truck |
| WO2023070969A1 (en) * | 2021-10-31 | 2023-05-04 | 三一汽车制造有限公司 | Hydraulic control valve group, hydraulic system, and operation machine |
| CN114212721A (en) * | 2021-12-13 | 2022-03-22 | 徐州徐工液压件有限公司 | Combined control valve with emergency lowering function and capable of preventing tower crane jacking sleeve frame from being damaged |
| CN114212721B (en) * | 2021-12-13 | 2024-06-07 | 徐州徐工液压件有限公司 | Combined control valve with emergency lowering function and capable of preventing damage to jacking sleeve frame of tower crane |
| WO2023115747A1 (en) * | 2021-12-21 | 2023-06-29 | 三一汽车制造有限公司 | Valve cover assembly, hydraulic valve group, hydraulic driving system, and operation vehicle |
| WO2024098583A1 (en) * | 2022-11-07 | 2024-05-16 | 三一重型装备有限公司 | Integrated water valve, water system, and work machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103603840B (en) | 2016-03-23 |
| WO2015078249A1 (en) | 2015-06-04 |
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