CN216867124U - Hydraulic integrated valve group, hydraulic pumping system and operation machine - Google Patents
Hydraulic integrated valve group, hydraulic pumping system and operation machine Download PDFInfo
- Publication number
- CN216867124U CN216867124U CN202123084518.2U CN202123084518U CN216867124U CN 216867124 U CN216867124 U CN 216867124U CN 202123084518 U CN202123084518 U CN 202123084518U CN 216867124 U CN216867124 U CN 216867124U
- Authority
- CN
- China
- Prior art keywords
- valve
- integrated
- oil
- port
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a hydraulic integrated valve group, a hydraulic pumping system and an operating machine. The hydraulic integrated valve set comprises an integrated valve body, wherein a reversing valve assembly and a piston returning valve are integrated in the integrated valve body, a working oil port of the reversing valve assembly is connected with a working interface of the integrated valve body, an oil inlet of the piston returning valve is connected with an energy accumulator of the integrated valve body, an oil return port of the piston returning valve is connected with an oil drainage interface of the integrated valve body, and a working oil port of the piston returning valve is connected with a working interface of the integrated valve body. The hydraulic integrated valve bank control system has the advantages that the integration level of the hydraulic integrated valve bank is improved, the overall quality is reduced, the energy loss is reduced, the control accuracy is provided, the maintenance and the repair are convenient, meanwhile, when the power of the whole vehicle is lost through the emergency oil source interface, the operation is carried out through the external power drive, the operation safety is ensured, and the operation efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of hydraulic pumping, in particular to a hydraulic integrated valve group, a hydraulic pumping system and an operating machine.
Background
At present, a pumping hydraulic system is taken as one of the most core systems of a concrete pump truck, and the main functions of a main valve group of the concrete pump truck mainly comprise: the conversion of high pressure and low pressure and positive and negative pumps and the overflow pressure relief of the main system are realized.
The existing hydraulic valve bank integrates a cartridge valve component, an electromagnetic directional valve for high-low pressure pumping and an electromagnetic directional valve for high-low pressure switching, so that the hydraulic valve bank has the defects of large volume, complex oil pipe and difficult processing and maintenance. And the other functions adopt independent valve groups to respectively control the functions of charging and unloading the energy accumulator and withdrawing the piston, so that the mass is large and the occupied space is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic integrated valve group, a hydraulic pumping system and an operating machine, which are used for overcoming the defects of large valve group mass and large occupied space in the prior art, and realizing the purposes of improving the integration level of the valve group, reducing the occupied space and lightening the weight.
The utility model provides a hydraulic integrated valve group, which comprises an integrated valve body, wherein a reversing valve component and a piston returning valve are integrated in the integrated valve body, a working oil port of the reversing valve component is connected with a working interface of the integrated valve body, an oil inlet of the piston returning valve is connected with an energy accumulator of the integrated valve body, an oil return port of the piston returning valve is connected with an oil drainage interface of the integrated valve body, and a working oil port of the piston returning valve is connected with the working interface of the integrated valve body.
According to the hydraulic integrated valve group provided by the utility model, the reversing valve component comprises a main reversing valve, a first pilot reversing valve and a third pilot reversing valve, an oil inlet of the main reversing valve is connected with an integrated oil inlet interface of the integrated valve body, a first working oil port and a second working oil port of the main reversing valve are both connected with a working interface of the integrated valve body, and an oil return port of the main reversing valve is connected with an oil return interface of the integrated valve body;
a first working oil port of the main reversing valve is connected with a hydraulic control oil port of the first pilot reversing valve, and an oil inlet of the first pilot reversing valve is connected with an integrated oil inlet interface of the integrated valve body;
an oil inlet of the third pilot reversing valve is connected with the energy accumulator, a second working oil port of the main reversing valve is connected with a hydraulic control oil port of the third pilot reversing valve, and an oil return port of the first pilot reversing valve and an oil return port of the third pilot reversing valve are both connected with an oil drainage interface of the integrated valve body.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body is further integrated with a pilot overflow valve and a proportional pressure reducing valve, an oil inlet of the pilot overflow valve is connected with an integrated oil inlet interface of the integrated valve body, an oil return port of the pilot overflow valve is connected with an oil return interface of the integrated valve body, a control oil port of the proportional pressure reducing valve is connected with a working oil port of the pilot overflow valve, the working oil port of the proportional pressure reducing valve is connected with an energy accumulator, and an oil return port of the proportional pressure reducing valve is connected with an oil drainage interface of the integrated valve body.
According to the hydraulic integrated valve group provided by the utility model, a cartridge valve and a second pilot reversing valve are further integrated into the integrated valve body, a hydraulic control oil port of the second pilot reversing valve is connected with an oil inlet of the cartridge valve, and an oil return port of the cartridge valve is connected with an oil return interface of the integrated valve body;
the oil inlet of the second pilot reversing valve is connected with the integrated oil inlet interface of the integrated valve body through a first one-way valve, the oil inlet of the second pilot reversing valve is connected with the energy accumulator through a second one-way valve, and the oil return port of the second pilot reversing valve is connected with the oil drainage interface of the integrated valve body.
According to the hydraulic integrated valve group provided by the utility model, the first pilot reversing valve, the second pilot reversing valve and the third pilot reversing valve are respectively provided with a manual emergency function coil.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body is provided with an emergency oil source interface, and the emergency oil source interface is respectively connected with the oil inlet of the main reversing valve and the oil inlet of the pilot overflow valve.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body is also provided with pressure measuring interfaces which are respectively in one-to-one correspondence connection with the first working oil port of the main reversing valve, the second working oil port of the main reversing valve, the working oil port of the first pilot reversing valve, the working oil port of the second pilot reversing valve, the working oil port of the third pilot reversing valve and the working oil port of the cartridge valve.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body is a forged valve body.
The utility model also provides a hydraulic pumping system which comprises the hydraulic integrated valve bank.
The utility model also provides a working machine comprising a hydraulic integrated valve group as described above or a hydraulic pumping system as described above.
The hydraulic integrated valve group, the hydraulic pumping system and the operation machine provided by the utility model comprise an integrated valve body, wherein a reversing valve component and a piston returning valve are integrated in the integrated valve body, a working oil port of the reversing valve component is connected with a working interface of the integrated valve body, an oil inlet of the piston returning valve is connected with an energy accumulator of the integrated valve body, an oil return port of the piston returning valve is connected with an oil drainage interface of the integrated valve body, and a working oil port of the piston returning valve is connected with the working interface of the integrated valve body, so that the integration degree of the hydraulic integrated valve group is improved, the overall quality is reduced, the energy loss is reduced, the control accuracy is provided, the maintenance and the inspection are convenient, and meanwhile, when the power of the whole vehicle is lost through an emergency oil source interface, the external power is driven to operate, the operation safety is ensured, and the operation efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of a hydraulic integrated valve set provided by the utility model;
FIG. 2 is a front view of a hydraulic integrated valve block provided by the present invention;
FIG. 3 is a right side view of the hydraulic integrated valve block provided by the present invention;
FIG. 4 is a top view of a hydraulic integrated valve block provided by the present invention;
reference numerals:
1: an integrated valve body; 2: an emergency oil source interface; 3: an oil inlet interface is integrated;
4: a first oil return interface; 5: a second oil return interface; 6: a third oil return interface;
7: a fourth oil return interface; 8: a fifth oil return interface; 9: a first oil drainage interface;
10: an energy storage device; 11: a second oil drainage interface; 12: a sixth working interface;
13: a fifth working interface; 14: a fourth working interface; 15: a second working interface;
16: a third working interface; 17: a third pressure measuring interface; 18: a fourth pressure measuring interface;
19: a fifth pressure measuring interface; 20: a first pressure measuring interface; 21: a main directional control valve;
22: withdrawing the piston valve; 23: a first pilot operated directional control valve; 24: a second pilot operated directional control valve;
25: a third pilot operated directional control valve; 26: a pilot overflow valve; 27: a proportional pressure reducing valve;
28: a cartridge valve; 29: a first check valve; 30: a second one-way valve;
31: and the second pressure measuring interface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The hydraulic integrated valve set of the present invention is described with reference to fig. 1 to 4, and includes an integrated valve body 1, the integrated valve body 1 is integrated with a reversing valve assembly and a piston returning valve 22, a working oil port of the reversing valve assembly is connected to a working interface of the integrated valve body 1, an oil inlet of the piston returning valve 22 is connected to an energy accumulator 10 of the integrated valve body 1, an oil return port of the piston returning valve 22 is connected to an oil drainage interface of the integrated valve body 1, and a working oil port of the piston returning valve 22 is connected to a working interface of the integrated valve body 1.
According to the hydraulic integrated valve group provided by the utility model, the reversing valve component comprises a main reversing valve 21, a first pilot reversing valve 23 and a third pilot reversing valve 25, an oil inlet of the main reversing valve 21 is connected with an integrated oil inlet interface 3 of an integrated valve body 1, a first working oil port and a second working oil port of the main reversing valve 21 are both connected with a working interface of the integrated valve body 1, and an oil return port of the main reversing valve 21 is connected with an oil return interface of the integrated valve body 1;
a first working oil port of the main reversing valve 21 is connected with a hydraulic control oil port of the first pilot reversing valve 23, and an oil inlet of the first pilot reversing valve 23 is connected with the integrated oil inlet interface 3 of the integrated valve body 1;
an oil inlet of the third pilot reversing valve 25 is connected with the energy accumulator 10, a second working oil port of the main reversing valve 21 is connected with a hydraulic control oil port of the third pilot reversing valve 25, and an oil return port of the first pilot reversing valve 23 and an oil return port of the third pilot reversing valve 25 are both connected with an oil drainage interface of the integrated valve body 1.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body 1 is further integrated with a pilot overflow valve 26 and a proportional pressure reducing valve 27, an oil inlet of the pilot overflow valve 26 is connected with the integrated oil inlet interface 3 of the integrated valve body 1, an oil return port of the pilot overflow valve 26 is connected with an oil return interface of the integrated valve body 1, a control oil port of the proportional pressure reducing valve 27 is connected with a working oil port of the pilot overflow valve 26, a working oil port of the proportional pressure reducing valve 27 is connected with the energy accumulator 10, and an oil return port of the proportional pressure reducing valve 27 is connected with an oil drainage interface of the integrated valve body 1.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body 1 is further integrated with a cartridge valve 28 and a second pilot reversing valve 24, a hydraulic control oil port of the second pilot reversing valve 24 is connected with an oil inlet of the cartridge valve 28, and an oil return port of the cartridge valve 28 is connected with an oil return interface of the integrated valve body 1;
an oil inlet of the second pilot-operated directional control valve 24 is connected with the integrated oil inlet interface 3 of the integrated valve body 1 through a first one-way valve 29, an oil inlet of the second pilot-operated directional control valve 24 is connected with the energy accumulator through a second one-way valve 30, and an oil return port of the second pilot-operated directional control valve 24 is connected with the oil drainage interface of the integrated valve body 1.
According to the hydraulic integrated valve group provided by the utility model, the first pilot reversing valve 23, the second pilot reversing valve 24 and the third pilot reversing valve 25 are respectively provided with a manual emergency function coil.
According to the hydraulic integrated valve group provided by the utility model, an integrated valve body 1 is provided with an emergency oil source interface 2, and the emergency oil source interface 2 is respectively connected with an oil inlet of a main reversing valve 21 and an oil inlet of a pilot overflow valve 26.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body 1 is further provided with pressure measuring interfaces which are respectively in one-to-one correspondence connection with the first working oil port of the main reversing valve 21, the second working oil port of the main reversing valve 21, the working oil port of the first pilot reversing valve 23, the working oil port of the second pilot reversing valve 24, the working oil port of the third pilot reversing valve 25 and the working oil port of the cartridge valve 28.
According to the hydraulic integrated valve group provided by the utility model, the integrated valve body 1 is a forged valve body.
The utility model provides a hydraulic integrated valve group, wherein an integrated valve body 1 comprises a reversing valve component, a proportional pressure reducing valve 27, a piston withdrawing valve 22 and a pilot overflow valve 26, wherein the reversing valve component comprises a main reversing valve 21, a first pilot reversing valve 23 and a third pilot reversing valve 25, namely, the hydraulic integrated valve group has the functions of enabling a main oil cylinder to complete reversing, concrete withdrawing pistons and system buffering, effectively reduces the independent space volume of each valve, improves the space utilization rate, reduces the number of valves, is simple in pipeline arrangement, reduces the pressure loss, meanwhile, the proportional pressure reducing valve 27 and the pilot overflow valve 26 can realize the self-adaptive adjustment of the overflow pressure along with the pressure of a main system, and can effectively reduce the pressure impact peak value at the moment of opening and closing an oil way in a hydraulic system requiring quick reversing in large flow.
The piston withdrawing valve 22 is provided with an oil return port and is connected with the second oil drainage port 11 of the integrated valve body 1, so that unloading is realized, back pressure in the accommodating cavity of the piston withdrawing valve 22 is prevented, and normal operation of the piston withdrawing valve 22 is guaranteed. It should be noted that the first oil drain port 9 and the second oil drain port 11 are provided to achieve the connection of the proportional pressure reducing valve 27, the pilot reversing valve, and the oil return port of the piston withdrawing valve 22, reduce the number of the arranged pipelines, and reduce the pressure loss.
Furthermore, the integrated valve body 1 is provided with an emergency oil source interface 2, and is connected with the main reversing valve 21, the pilot reversing valve, the proportional pressure reducing valve 27, the piston withdrawing valve 22 and the pilot overflow valve 26, when the whole vehicle loses power through the emergency oil source interface 2, the external power drives the vehicle to operate, the safety of the operation is ensured, and the operation efficiency is improved.
It should be noted that the first pilot reversing valve 23, the second pilot reversing valve 24, the third pilot reversing valve 25, and the main reversing valve 21 are all provided with manual emergency function coils, so that manual emergency operation is realized, and adaptive treatment to emergency situations is improved.
Furthermore, the proportional pressure reducing valve 27 and the pilot reversing valve are respectively provided with an oil return port and are connected with the first oil drainage interface 9 of the integrated valve body 1, so that unloading is realized, back pressure in the containing cavities of the proportional pressure reducing valve 27 and the pilot reversing valve is prevented, and normal operation of the proportional pressure reducing valve 27 and the pilot reversing valve is ensured.
The main reversing valve 21 is provided with an oil return port and is connected with an oil return port of the integrated valve body 1, so that hydraulic oil can flow back to the mailbox. It is worth to be noted that the integrated valve body 1 is provided with a plurality of oil return interfaces connected in series, so that the main reversing valve 21 can return oil quickly and unload in time.
The pilot overflow valve 26 is provided with an oil return port and is connected with the oil return port, so that the overflow pressure of hydraulic oil can be adjusted according to the pressure of the system, the pressure matching is further realized, and the pressure impact peak value at the moment of opening and closing the oil way can be effectively reduced when the high pressure and the low pressure of the pumping system are switched.
The integrated valve body 1 is provided with a pressure measuring interface, and is respectively connected with the main reversing valve 21, the pilot reversing valve, the proportional pressure reducing valve 27, the piston retreating valve 22 and the pilot overflow valve 26 in a one-to-one correspondence manner, so as to test the pressure of hydraulic oil of the main reversing valve 21, the pilot reversing valve, the proportional pressure reducing valve 27, the piston retreating valve 22 and the pilot overflow valve 26 in real time.
It should be noted that five pressure measuring interfaces are provided, which are respectively a first pressure measuring interface 20, a second pressure measuring interface 31, a third pressure measuring interface 17, a fourth pressure measuring interface 18 and a fifth pressure measuring interface 19, so that the main directional control valve 21, the pilot directional control valve, the proportional pressure reducing valve 27, the piston withdrawing valve 22 and the pilot overflow valve 26 are monitored one by one, and the accuracy is ensured.
In order to realize the control of the direction, pressure and flow of the oil of the pilot reversing valve, i.e. the on-off control of the hydraulic oil path, the hydraulic control oil port of the second pilot reversing valve 24 is connected with the oil inlet of the cartridge valve 28, and the oil return port of the cartridge valve 28 is connected with the fifth oil return port 8 of the integrated valve body 1.
The integrated valve body 1 is provided with an integrated oil inlet interface 3 for conveying hydraulic oil to the integrated valve body 1. The integrated valve body 1 is provided with a first working oil port for outputting a hydraulic working instruction.
A first check valve 29 and a second check valve 30 are arranged on a connecting pipeline between the integrated oil inlet interface 3 and the first working oil port, and are used for controlling the flow direction of hydraulic oil. The oil inlets of the first one-way valve 29 and the second one-way valve 30 are arranged in a reverse mode, and the oil inlet of the pilot reversing valve is connected with the connecting pipeline between the first one-way valve 29 and the second one-way valve 30, so that the input and output of hydraulic oil of the pilot reversing valve can be regulated.
The specific principle of the hydraulic integrated valve set provided by the embodiment of the utility model is as follows:
it should be noted that the ports a and B described below are working oil ports of the valve, the port T is an oil return port, and the port P is an oil inlet.
The integrated valve body 1 is provided with an integrated oil inlet interface 3, an emergency oil source interface 2, a first oil return interface 4, a second oil return interface 5, a third oil return interface 6, a fourth oil return interface 7, a fifth oil return interface 8, a first oil drainage interface 9, a second oil drainage interface 11, an energy accumulator 10, a second working interface 15, a third working interface 16, a fourth working interface 14, a fifth working interface 13, a sixth working interface 12, a first pressure measuring interface 20, a second pressure measuring interface 31, a third pressure measuring interface 17, a fourth pressure measuring interface 18 and a fifth pressure measuring interface 19;
the integrated valve body 1 is integrated with a main reversing valve 21, a piston withdrawing valve 22, a first pilot reversing valve 23, a second pilot reversing valve 24, a third pilot reversing valve 25, a pilot overflow valve 26, a proportional pressure reducing valve 27, a cartridge valve 28, a first check valve 29 and a second check valve 30;
a port P of the main reversing valve 21 is connected with the integrated oil inlet interface 3, a port A of the main reversing valve 21 is connected with the second working interface 15, the third working interface 16 and the third pressure measuring interface 17, a port B of the main reversing valve 21 is connected with the fourth working interface 14, the fifth working interface 13 and the second pressure measuring interface 31, and a port T of the main reversing valve 21 is connected with the first oil return interface 4, the second oil return interface 5, the third oil return interface 6, the fourth oil return interface 7 and the fifth oil return interface 8;
a port P of the first pilot reversing valve 23 is connected with the energy accumulator 10, and a port A of the first pilot reversing valve 23 is connected with a hydraulic control oil port of the main reversing valve 21, so that the reversing action of the main reversing valve 21 is realized;
the port P of the second pilot-operated directional control valve 24 is connected with the accumulator 10 through a second check valve 30, and the port A of the second pilot-operated directional control valve 24 is connected with the pilot port of the cartridge valve 28;
the port a of the third pilot-operated directional control valve 25 is connected to the pilot-operated oil port of the main directional control valve 21;
the port P of the piston retreating valve 22 is connected with the energy accumulator 10, the port A of the piston retreating valve 22 is connected with the sixth working port 12, and the port T of the piston retreating valve is connected with the second oil drainage port 11;
the integrated oil inlet interface 3 and the energy accumulator 10 are respectively connected through a first one-way valve 29 and a second one-way valve 30, and an outlet of the first one-way valve 29 and an outlet of the second one-way valve 30 are both connected with a port P of the second pilot reversing valve 24;
a second port of the proportional pressure reducing valve 27 is connected to the accumulator 10;
a first port of the pilot overflow valve 26 is connected with the integrated oil inlet interface 3, a second port of the pilot overflow valve 26 is connected with the fifth oil return interface 8, and a third port of the pilot overflow valve 26 is connected with a first port of the proportional pressure reducing valve 27;
a port T of the first pilot reversing valve 23, a port T of the second pilot reversing valve 24, a port T of the third pilot reversing valve 25 and a third port of the proportional reducing valve 27 are connected with the first oil drainage interface 9;
the port A of the cartridge valve 28 is connected with the integrated oil inlet interface 3, and the pilot port of the cartridge valve 28 is connected with the port A of the second pilot reversing valve 24;
the first pressure measuring interface 20 is connected with an A port of the cartridge valve 28, the second pressure measuring interface 31 is connected with a B port of the main reversing valve 21, the third pressure measuring interface 17 is connected with an A port of the main reversing valve 21, the fourth pressure measuring interface 18 is connected with an A port of the first pilot reversing valve 23, and the fifth pressure measuring interface 19 is connected with an A port of the third pilot reversing valve 25;
the emergency oil source interface 2 and the fifth oil return interface 8 are both provided with quick connectors.
The utility model also provides a hydraulic pumping system which comprises the hydraulic integrated valve bank.
The utility model also provides a working machine comprising a hydraulic pumping system as described above.
The hydraulic integrated valve group, the hydraulic pumping system and the operation machine provided by the utility model comprise an integrated valve body, wherein a reversing valve component and a piston returning valve are integrated in the integrated valve body, a working oil port of the reversing valve component is connected with a working interface of the integrated valve body, an oil inlet of the piston returning valve is connected with an energy accumulator of the integrated valve body, an oil return port of the piston returning valve is connected with an oil drainage interface of the integrated valve body, and a working oil port of the piston returning valve is connected with the working interface of the integrated valve body, so that the integration degree of the hydraulic integrated valve group is improved, the overall quality is reduced, the energy loss is reduced, the control accuracy is provided, the maintenance and the inspection are convenient, and meanwhile, when the power of the whole vehicle is lost through an emergency oil source interface, the external power is driven to operate, the operation safety is ensured, and the operation efficiency is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an integrated valves of hydraulic pressure which characterized in that, includes integrated valve body, integrated valve body integration has reversing valve subassembly and moves back the piston valve, the work hydraulic fluid port of reversing valve subassembly with integrated valve body's work interface connection, move back the oil inlet of piston valve with integrated valve body's accumulator is connected, move back the oil return port of piston valve with integrated valve body's draining interface connection, move back the work hydraulic fluid port of piston valve with integrated valve body's work interface connection.
2. The hydraulic integrated valve bank according to claim 1, wherein the reversing valve assembly comprises a main reversing valve, a first pilot reversing valve and a third pilot reversing valve, an oil inlet of the main reversing valve is connected with an integrated oil inlet interface of the integrated valve body, a first working oil port and a second working oil port of the main reversing valve are both connected with a working interface of the integrated valve body, and an oil return port of the main reversing valve is connected with an oil return interface of the integrated valve body;
a first working oil port of the main reversing valve is connected with a hydraulic control oil port of the first pilot reversing valve, and an oil inlet of the first pilot reversing valve is connected with an integrated oil inlet interface of the integrated valve body;
an oil inlet of the third pilot reversing valve is connected with the energy accumulator, a second working oil port of the main reversing valve is connected with a hydraulic control oil port of the third pilot reversing valve, and an oil return port of the first pilot reversing valve and an oil return port of the third pilot reversing valve are both connected with an oil drainage interface of the integrated valve body.
3. The hydraulic integrated valve group according to claim 2, wherein the integrated valve body is further integrated with a pilot overflow valve and a proportional pressure reducing valve, an oil inlet of the pilot overflow valve is connected with an integrated oil inlet interface of the integrated valve body, an oil return port of the pilot overflow valve is connected with an oil return interface of the integrated valve body, a control oil port of the proportional pressure reducing valve is connected with a working oil port of the pilot overflow valve, the working oil port of the proportional pressure reducing valve is connected with an energy accumulator, and the oil return port of the proportional pressure reducing valve is connected with an oil drainage interface of the integrated valve body.
4. The hydraulic integrated valve group according to claim 3, wherein the integrated valve body is further integrated with a cartridge valve and a second pilot reversing valve, a hydraulic control oil port of the second pilot reversing valve is connected with an oil inlet of the cartridge valve, and an oil return port of the cartridge valve is connected with an oil return interface of the integrated valve body;
the oil inlet of the second pilot reversing valve is connected with the integrated oil inlet interface of the integrated valve body through a first one-way valve, the oil inlet of the second pilot reversing valve is connected with the energy accumulator through a second one-way valve, and the oil return port of the second pilot reversing valve is connected with the oil drainage interface of the integrated valve body.
5. The hydraulic integrated valve group according to claim 4, wherein the first pilot reversing valve, the second pilot reversing valve and the third pilot reversing valve are respectively provided with a manual emergency function coil.
6. The hydraulic integrated valve group according to claim 4, wherein the integrated valve body is provided with an emergency oil source interface, and the emergency oil source interface is respectively connected with the oil inlet of the main reversing valve and the oil inlet of the pilot overflow valve.
7. The hydraulic integrated valve group according to claim 4, wherein the integrated valve body is further provided with pressure measuring interfaces which are respectively connected with the first working oil port of the main reversing valve, the second working oil port of the main reversing valve, the working oil port of the first pilot reversing valve, the working oil port of the second pilot reversing valve, the working oil port of the third pilot reversing valve and the working oil port of the cartridge valve in a one-to-one correspondence manner.
8. A hydraulic integrated valve block according to any one of claims 1 to 3, wherein the integrated valve body is a forged valve body.
9. A hydraulic pumping system comprising a hydraulic integrated valve pack as claimed in any one of claims 1 to 8.
10. A work machine comprising a hydraulic integrated valve pack according to any of claims 1-8 or a hydraulic pumping system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123084518.2U CN216867124U (en) | 2021-12-09 | 2021-12-09 | Hydraulic integrated valve group, hydraulic pumping system and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123084518.2U CN216867124U (en) | 2021-12-09 | 2021-12-09 | Hydraulic integrated valve group, hydraulic pumping system and operation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867124U true CN216867124U (en) | 2022-07-01 |
Family
ID=82128654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123084518.2U Active CN216867124U (en) | 2021-12-09 | 2021-12-09 | Hydraulic integrated valve group, hydraulic pumping system and operation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867124U (en) |
-
2021
- 2021-12-09 CN CN202123084518.2U patent/CN216867124U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102226453B (en) | Dual-redundancy electro hydraulic servo actuator | |
| CN108757624B (en) | Differential speed-increasing circuit of oil cylinder overflow valve | |
| CN110131221B (en) | Hydraulic system of mechanical arm | |
| CN103267034A (en) | Load sensitive hydraulic system with compensation valve energy recovery function | |
| CN108506286A (en) | A kind of driving motor directly drives the hydraulic energy-saving system of pump control cylinder with differential effect | |
| CN104533886A (en) | Non-load starting device and method for variable hydraulic pump | |
| CN201525715U (en) | Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage | |
| CN203582302U (en) | Control valve bank, hydraulic control system and truck crane | |
| CN216867124U (en) | Hydraulic integrated valve group, hydraulic pumping system and operation machine | |
| CN110594214A (en) | Hydraulic control system of metal packing hydraulic press | |
| CN212202673U (en) | Novel hydraulic system | |
| CN104564862A (en) | Combined pump-controlled cylinder electric hydraulic control system | |
| CN214247831U (en) | Hydraulic station | |
| CN216278724U (en) | Closed pump control system capable of quickly releasing hydraulic energy | |
| CN209370176U (en) | A kind of hydraulic sliding type watertight door hydraulic system | |
| CN210660793U (en) | Hydraulic control system of metal packing hydraulic press | |
| CN210660801U (en) | Modular hydraulic control system for speed regulator of small water turbine | |
| CN112539204A (en) | Electric proportional pump emergency control device and concrete pump truck | |
| CN209925316U (en) | Automatic continuous single-action supercharging device | |
| CN215058516U (en) | Reciprocating automatic reversing supercharger | |
| CN113586532B (en) | Construction machine | |
| CN208474245U (en) | A kind of controllable hydraulic pumping station system | |
| CN212868056U (en) | Pneumatic-hydraulic hybrid drive control unit | |
| CN215409480U (en) | Pump control system for EHA | |
| CN212928344U (en) | Pilot control system and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |