CN216975379U - Large-traffic two-way cartridge valve combination formula switching-over valves - Google Patents
Large-traffic two-way cartridge valve combination formula switching-over valves Download PDFInfo
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- CN216975379U CN216975379U CN202220805872.5U CN202220805872U CN216975379U CN 216975379 U CN216975379 U CN 216975379U CN 202220805872 U CN202220805872 U CN 202220805872U CN 216975379 U CN216975379 U CN 216975379U
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Abstract
The utility model particularly discloses a large-flow two-way cartridge valve combined type reversing valve set which comprises a cover plate, a valve block, a first oil port, a second oil port and an electromagnetic reversing valve, wherein an oil inlet, a first oil outlet and a second oil outlet are formed in the electromagnetic reversing valve, a first cartridge valve, a second cartridge valve, a third cartridge valve and a fourth cartridge valve are arranged between the cover plate and the valve block in a cartridge mode, the first oil port is respectively communicated with first main oil ports of the first cartridge valve and the third cartridge valve, the second oil port is respectively communicated with the second cartridge valve and the fourth cartridge valve, a shuttle valve is arranged at the oil inlet end of the oil inlet, the first oil port is communicated with the oil inlet, the second oil port is communicated with the oil inlet, and the first oil outlet and the second oil outlet are respectively communicated with the first cartridge valve, the second cartridge valve, the third cartridge valve and the fourth cartridge valve. The utility model realizes the walking reversing control of the large-scale crawler crane and has the characteristics of small volume, large power, low cost, short shelf life, stability and reliability.
Description
Technical Field
The utility model relates to the technical field of hydraulic equipment, in particular to a large-flow two-way cartridge valve combined reversing valve bank.
Background
The large-scale crawler crane is generally very heavy in load, a hydraulic system is mostly adopted for driving, and the actuation part of the large-scale crawler crane needs very large flow and pressure when acting, so that the actuation part of the walking loop of the large-scale crawler crane selects a hydraulic motor, the whole machine can move forwards and backwards by controlling the rotation direction of the hydraulic motor, and a reversing valve group is needed to distribute hydraulic oil output by the hydraulic motor in the middle of moving forwards and backwards. Most of the existing reversing valve banks are imported brands, long in shelf life, high in cost, insufficient in supply amount, and limited in installation space of whole equipment, so that a reversing valve bank which is large in power, small in size, stable and reliable needs to be developed, and the defects of long in shelf life, high in cost and insufficient in supply amount are overcome.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a large-flow two-way cartridge valve combined reversing valve bank.
In order to solve the technical problems, the utility model provides a large-flow two-way cartridge valve combined reversing valve set, which comprises a cover plate, a valve block and an electromagnetic reversing valve, wherein the electromagnetic reversing valve is arranged on the cover plate, the cover plate is arranged on the valve block, a first oil port and a second oil port are arranged on the valve block, the electromagnetic reversing valve is provided with an oil inlet, a first oil outlet and a second oil outlet, a first cartridge valve, a second cartridge valve, a third cartridge valve and a fourth cartridge valve are arranged between the cover plate and the valve block in an inserted manner, the first oil port is respectively communicated with a first main oil port of the first cartridge valve and a first main oil port of the third cartridge valve, the second oil port is respectively communicated with a first main oil port of the second cartridge valve and a first main oil port of the fourth cartridge valve, a shuttle valve is arranged at an oil inlet end of the oil inlet, the first oil port is communicated with the oil inlet and the second oil port is communicated with the oil inlet through the shuttle valve, the first oil outlet is respectively communicated with a control end of the first cartridge valve and a control end of the third cartridge valve, the first oil outlet is communicated with second main oil ports of the second cartridge valve and the fourth cartridge valve respectively, the second oil outlet is communicated with control ends of the second cartridge valve and the fourth cartridge valve respectively, and the second oil outlet is communicated with second main oil ports of the first cartridge valve and the third cartridge valve respectively.
Preferably, a first throttling plug for reducing impact is arranged between the first oil outlet and the second main oil port of the second cartridge valve.
Preferably, a second throttling plug for reducing impact is arranged between the second oil outlet and the second main oil ports of the first cartridge valve and the third cartridge valve.
Preferably, the control ends of the first cartridge valve, the second cartridge valve, the third cartridge valve and the fourth cartridge valve are respectively provided with a third throttling plug for reducing impact.
Preferably, a first overflow valve for controlling the pressure of the outlet end of the second oil outlet of the third cartridge valve is arranged at the outlet end of the second oil outlet of the third cartridge valve.
Preferably, a second overflow valve for controlling the pressure of the outlet end of the second oil outlet of the fourth cartridge valve is arranged at the outlet end of the second oil outlet of the fourth cartridge valve.
Preferably, the second oil outlets of the first cartridge valve, the second cartridge valve, the third cartridge valve and the fourth cartridge valve are all communicated with pressure measuring joints fixedly connected to the valve block.
Preferably, first check valves are arranged between the second oil outlet and second main oil ports of the third cartridge valve and the fourth cartridge valve respectively, and the first check valves are located between the second oil outlet and the second main oil port of the third cartridge valve and between the second oil outlet and the second main oil port of the fourth cartridge valve respectively.
Preferably, a second check valve is arranged between the first oil outlet and a second main oil port of the second cartridge valve, and the second check valve is located between the second main oil port and the first throttle plug.
Preferably, a threaded interface is arranged on the valve block, and the pressure measuring joint is fixedly connected with the valve block through threads of the threaded interface.
Compared with the prior art, when power oil of a hydraulic system flows in from the first oil port or the second oil port, the opening or closing of different cartridge valves can be controlled by controlling the power on and the power off of the electromagnetic directional valve, so that pressure oil flows out from two groups of different oil ports of the first oil port or the second oil port respectively, the walking directional control of the large crawler crane is realized, the first cartridge valve and the second cartridge valve as well as the third cartridge valve and the fourth cartridge valve respectively form a group, and the hydraulic system is opened or closed simultaneously.
Drawings
FIG. 1 is a schematic view of a large flow two-way cartridge valve combined reversing valve set of the present invention,
fig. 2 is a schematic view of the installation between the cover plate and the valve block of the present invention.
In the figure, 1, a cover plate, 2, a valve block, 3, a first oil port, 4, a second oil port, 5, a shuttle valve, 61, a first throttling plug, 62, a second throttling plug, 63, a third throttling plug, 71, a first overflow valve, 72, a second overflow valve, 8, a pressure measuring joint, 91, a first check valve, 92, a second check valve, 10, an electromagnetic reversing valve, 101, an oil inlet, 102, a first oil outlet, 103, a second oil outlet, 11, a first cartridge valve, 12, a second cartridge valve, 13, a third cartridge valve and 14, a fourth cartridge valve.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in FIG. 1, a large-flow two-way cartridge valve combined reversing valve set comprises a cover plate 1, a valve block 2 and an electromagnetic reversing valve 10, wherein the electromagnetic reversing valve 10 is arranged on the cover plate 1, the cover plate 1 is arranged on the valve block 2, a first oil port 3 and a second oil port 4 are arranged on the valve block 2, an oil inlet 101, a first oil outlet 102 and a second oil outlet 103 are arranged on the electromagnetic reversing valve 10, a first cartridge valve 11, a second cartridge valve 12, a third cartridge valve 13 and a fourth cartridge valve 14 are arranged between the cover plate 1 and the valve block 2 in a cartridge manner, the first oil port 3 is respectively communicated with first main oil ports of the first cartridge valve 11 and the third cartridge valve 13, the second oil port 4 is respectively communicated with first main oil ports of the second cartridge valve 12 and the fourth cartridge valve 14, a shuttle valve 5 is arranged at an oil inlet end of the oil inlet 101, the first oil port 3 is respectively communicated with the oil inlet 101 and the second oil inlet 4 is respectively communicated with the oil outlet 101 through the shuttle valve 5, the first oil port 102 is respectively communicated with control ends of the first cartridge valve 11 and the third cartridge valve 13, the first oil outlet 102 is communicated with second main oil ports of the second cartridge valve 12 and the fourth cartridge valve 14 respectively, the second oil outlet 103 is communicated with control ends of the second cartridge valve 12 and the fourth cartridge valve 14 respectively, and the second oil outlet 103 is communicated with second main oil ports of the first cartridge valve 11 and the third cartridge valve 13 respectively.
In this embodiment, a plurality of cover plates 1 are provided, and the plurality of cover plates 1 are respectively located on the front and rear sides of the valve block 2 (taking fig. 2 as an example, the vertical paper surface is inward as the front, and the vertical paper surface is outward as the rear), and the electromagnetic directional valve 10 is installed on the valve block 2 through the cover plates 1. The second main port of the first cartridge valve 11 corresponds to port a1 in the drawing, the second main port of the second cartridge valve 12 corresponds to port a2 in the drawing, the second main port of the third cartridge valve 13 corresponds to port B1 in the drawing, and the second main port of the fourth cartridge valve 14 corresponds to port B2 in the drawing. First cartridge valve 11, second cartridge valve 12, third cartridge valve 13 and fourth cartridge valve 14 all install between apron 1 and valve block 2 through the plug-in components, and shuttle 5 is the cartridge formula shuttle valve of installing on apron 1, and the theory of operation of this switching-over valves is as follows:
under the condition that the control electromagnetic directional valve 10 is not powered, when a power oil source of a hydraulic system flows in from the first oil port 3, oil flows into an oil inlet 101 of the electromagnetic directional valve 10 through the shuttle valve 5 and flows out from the second oil outlet 103 to flow to spring cavities of the first cartridge valve 11 and the second cartridge valve 12, so that valve cores of the two cartridge valves are closed, a main oil path is not communicated, at the moment, valve cores of the third cartridge valve 13 and the fourth cartridge valve 14 are opened, the oil in the main oil path flows through the third cartridge valve and flows out from the second main oil port of the first cartridge valve 11, and return oil of an execution part can flow in from the second main oil port of the third cartridge valve, flows through the fourth cartridge valve 14 and flows to the second oil port 4 of the valve block; when a power oil source of a hydraulic system flows in from the second oil port 4, the oil liquid also flows into the oil inlet 101 of the electromagnetic directional valve 10 through the shuttle valve 5 and flows out from the second oil outlet 103, flows to the spring cavities of the first cartridge valve 11 and the second cartridge valve 12, so that the valve cores of the two cartridge valves are closed, the main oil path is blocked, at this time, the valve cores of the third cartridge valve 13 and the fourth cartridge valve 14 are opened, the oil liquid in the main oil path flows out from the second main oil port of the third cartridge valve 13 through the fourth cartridge valve 14, and the return oil of the execution component can flow in from the second main oil port of the first cartridge valve 11 and flows to the first oil port 3.
Under the condition of controlling the power on of the electromagnetic directional valve 10, when a power oil source of a hydraulic system flows in from the first oil port 3, oil flows in an oil inlet 101 of the electromagnetic directional valve 10 through the shuttle valve 5, flows out from a first oil outlet 102, flows to spring cavities of the third cartridge valve 13 and the fourth cartridge valve 14, so that valve cores of the two cartridge valves are closed, a main oil path is blocked, at the moment, the valve cores of the first cartridge valve 11 and the second cartridge valve 12 are opened, the oil in the main oil path flows out from a second main oil port of the second cartridge valve 12 through the first cartridge valve 11, and return oil of an execution part can flow in from a second main oil port of the fourth cartridge valve 14 and flows to the second oil port 4 through the second cartridge valve 12; when a power oil source of a hydraulic system flows in from the second oil port 4, the same oil flows into the oil inlet 102 of the electromagnetic directional valve 10 through the shuttle valve 5, flows out from the first oil outlet 102, flows to the spring cavities of the third cartridge valve 13 and the fourth cartridge valve 14, so that the valve cores of the two cartridge valves are closed, the main oil path is blocked, at the moment, the valve cores of the first cartridge valve 11 and the second cartridge valve 12 are opened, the main oil path flows through the second cartridge valve 12 and flows out from the second main oil port of the fourth cartridge valve 14, and the return oil of the execution component can flow in from the second main oil port of the second cartridge valve 12 and flows to the first oil port 3 through the first cartridge valve 11;
the reversing valve group controls the valve core of the electromagnetic reversing valve 10 to work at two positions by controlling the power on and the power off of the electromagnetic reversing valve 10, so that the pilot oil can be controlled to flow to different cartridge valves to open and close different cartridge valves, hydraulic oil flows out from different working oil ports, the walking reversing control of the large crawler crane is realized, and the reversing valve group has the characteristics of small size, high power, low cost, short shelf life, stability and reliability.
As shown in FIG. 1, a first throttle plug 61 is arranged between the first oil outlet 102 and the second main oil port of the second cartridge valve 12, a second throttle plug 62 is arranged between the second oil outlet 103 and the second main oil ports of the first cartridge valve 11 and the third cartridge valve 13, and third throttle plugs 63 are arranged at the control ends of the first cartridge valve 11, the second cartridge valve 12, the third cartridge valve 13 and the fourth cartridge valve 14.
As shown in FIG. 1, a first overflow valve 71 for controlling the pressure at the outlet end of the second oil outlet of the third cartridge valve 13 is arranged at the outlet end of the second oil outlet of the third cartridge valve 13, and a second overflow valve 72 for controlling the pressure at the outlet end of the second oil outlet of the fourth cartridge valve 14 is arranged at the outlet end of the second oil outlet of the fourth cartridge valve 14. In the embodiment, the pressure at the outlet end of the second oil outlet of the third cartridge valve 13 is limited by the first overflow valve 71 to be not more than 130bar, and the pressure at the outlet end of the second oil outlet of the fourth cartridge valve 14 is limited by the second overflow valve 72 to be not more than 350 bar. In other embodiments, the corresponding pressure limits may be adjusted according to actual requirements.
As shown in FIG. 1, the second oil outlets of the first cartridge valve 11, the second cartridge valve 12, the third cartridge valve 13 and the fourth cartridge valve 14 are all communicated with a pressure measuring joint 8 fixedly connected to the valve block 2. In this embodiment, the pressure measuring joints 8 are used for measuring or real-time measuring the pressure of the second oil outlets of the first cartridge valve 11, the second cartridge valve 12, the third cartridge valve 13 and the fourth cartridge valve 14, so as to control the corresponding pressure limiting range and ensure the safe and stable operation of the reversing valve group.
As shown in fig. 1, first check valves 91 are respectively disposed between the second oil outlet 103 and the second main oil ports of the third cartridge valve 13 and the fourth cartridge valve 14, the first check valves 91 are respectively located between the second oil outlet 103 and the second main oil port of the third cartridge valve 13 and between the second oil outlet 103 and the second main oil port of the fourth cartridge valve 14, a second check valve 92 is disposed between the first oil outlet 102 and the second main oil port of the second cartridge valve 12, and the second check valve 92 is located between the second main oil port and the first throttle plug 61. In this embodiment, when the third cartridge valve 13 and the fourth cartridge valve 14 are closed, the oil in the oil port of the corresponding cartridge valve can be unloaded through the first check valve 91, and when the second cartridge valve 12 is closed, the oil in the oil port can be unloaded through the second check valve 92, so that the valve core of the corresponding cartridge valve can be closed safely and reliably.
As shown in fig. 1, a threaded interface is provided on the valve block 2, and the pressure measuring joint 8 is fixedly connected with the valve block 2 through the threaded interface. In this embodiment, pressure measurement joint 8 is used for detecting the pressure that corresponds the oil circuit, through set up pressure measurement joint 8 on valve block 2 screw thread formula interface and with valve block 2 threaded connection, has both guaranteed pressure measurement joint 8's connection reliability, has also guaranteed pressure measurement joint 8's leakproofness simultaneously, and then provides the guarantee to the measuring accuracy of pressure.
The large-flow two-way cartridge valve combined reversing valve bank provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A large-flow two-way cartridge valve combined reversing valve group is characterized by comprising a cover plate (1), a valve block (2) and an electromagnetic reversing valve (10), wherein the electromagnetic reversing valve (10) is arranged on the cover plate (1), the cover plate (1) is installed on the valve block (2), a first oil port (3) and a second oil port (4) are formed in the valve block (2), an oil inlet (101), a first oil outlet (102) and a second oil outlet (103) are formed in the electromagnetic reversing valve (10), a first cartridge valve (11), a second cartridge valve (12), a third cartridge valve (13) and a fourth cartridge valve (14) are arranged between the cover plate (1) and the valve block (2) in a cartridge mode, the first oil port (3) is communicated with a first main oil port of the first cartridge valve (11) and a first main oil port of the third cartridge valve (13), the second oil port (4) is communicated with a first main oil port of the second cartridge valve (12) and a first main oil port of the fourth cartridge valve (14) in a cartridge valve (14) respectively, the oil inlet end of the oil inlet (101) is provided with a shuttle valve (5), the first oil port (3) is communicated with the oil inlet (101) and the second oil port (4) is communicated with the oil inlet (101) through the shuttle valve (5), the first oil outlet (102) is communicated with the control ends of the first cartridge valve (11) and the third cartridge valve (13) respectively, the first oil outlet (102) is communicated with the second main oil port of the second cartridge valve (12) and the fourth cartridge valve (14) respectively, the second oil outlet (103) is communicated with the control ends of the second cartridge valve (12) and the fourth cartridge valve (14) respectively, and the second oil outlet (103) is communicated with the second main oil ports of the first cartridge valve (11) and the third cartridge valve (13) respectively.
2. The high flow two-way cartridge valve combined reversing valve set according to claim 1, characterized in that a first throttling plug (61) for reducing impact is arranged between the first oil outlet (102) and the second main oil port of the second cartridge valve (12).
3. The high flow two-way cartridge valve combined reversing valve group according to claim 1, characterized in that a second throttling plug (62) for reducing impact is arranged between the second oil outlet (103) and the second main oil ports of the first cartridge valve (11) and the third cartridge valve (13).
4. The high flow two-way cartridge valve block valve bank according to claim 1, characterized in that the control ends of the first cartridge valve (11), the second cartridge valve (12), the third cartridge valve (13) and the fourth cartridge valve (14) are provided with a third throttling plug (63) for reducing impact.
5. The high-flow two-way cartridge valve combined reversing valve set according to claim 3, characterized in that a first overflow valve (71) for controlling the pressure at the outlet end of the second oil outlet of the third cartridge valve (13) is arranged at the outlet end of the second oil outlet of the third cartridge valve (13).
6. The high-flow two-way cartridge valve combined reversing valve set according to claim 4, characterized in that a second overflow valve (72) for controlling the pressure at the outlet end of the second oil outlet of the fourth cartridge valve (14) is arranged at the outlet end of the second oil outlet of the fourth cartridge valve (14).
7. The high-flow two-way cartridge valve combined reversing valve group according to claim 1, characterized in that second oil outlets of the first cartridge valve (11), the second cartridge valve (12), the third cartridge valve (13) and the fourth cartridge valve (14) are all communicated with a pressure measuring joint (8) fixedly connected to the valve block (2).
8. The high-flow two-way cartridge valve combined reversing valve group according to claim 1, characterized in that a first check valve (91) is arranged between the second oil outlet (103) and the second main oil ports of the third cartridge valve (13) and the fourth cartridge valve (14), and the first check valve (91) is respectively located between the second oil outlet (103) and the second main oil port of the third cartridge valve (13) and between the second oil outlet (103) and the second main oil port of the fourth cartridge valve (14).
9. The high flow two-way cartridge valve combined reversing valve set according to claim 2, characterized in that a second check valve (92) is arranged between the first oil outlet (102) and a second main oil port of the second cartridge valve (12), and the second check valve (92) is located between the second main oil port and the first throttling plug (61).
10. The large-flow two-way cartridge valve combined reversing valve set according to claim 7, characterized in that a threaded connector is arranged on the valve block (2), and the pressure measuring connector (8) is fixedly connected with the valve block (2) through the threaded connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220805872.5U CN216975379U (en) | 2022-04-08 | 2022-04-08 | Large-traffic two-way cartridge valve combination formula switching-over valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220805872.5U CN216975379U (en) | 2022-04-08 | 2022-04-08 | Large-traffic two-way cartridge valve combination formula switching-over valves |
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| Publication Number | Publication Date |
|---|---|
| CN216975379U true CN216975379U (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220805872.5U Active CN216975379U (en) | 2022-04-08 | 2022-04-08 | Large-traffic two-way cartridge valve combination formula switching-over valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975379U (en) |
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2022
- 2022-04-08 CN CN202220805872.5U patent/CN216975379U/en active Active
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A combined directional valve group with a large flow rate two way plug-in valve Effective date of registration: 20230725 Granted publication date: 20220715 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN HONGHUI TECHNOLOGY Co.,Ltd. Registration number: Y2023980049707 |