CN220581401U - Pressure maintaining valve group of oil cylinder - Google Patents
Pressure maintaining valve group of oil cylinder Download PDFInfo
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- CN220581401U CN220581401U CN202322119079.7U CN202322119079U CN220581401U CN 220581401 U CN220581401 U CN 220581401U CN 202322119079 U CN202322119079 U CN 202322119079U CN 220581401 U CN220581401 U CN 220581401U
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- valve
- oil port
- oil
- port
- hydraulic control
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- 238000000034 method Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000005856 abnormality Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 150
- 239000010720 hydraulic oil Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses an oil cylinder pressure maintaining valve group, which comprises: the hydraulic control check valve comprises a valve block, a balance valve, a hydraulic control check valve, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port and a sixth oil port. The utility model adopts the check valve, the balance valve and the hydraulic control check valve to maintain pressure, so that double protection can be realized on the load, namely, when the hydraulic control check valve is in sealing failure or the check valve is blocked, the check valve or the balance valve can maintain pressure on the load; meanwhile, the design of the overflow valve is added, so that the working pressure can be kept within the design pressure setting range due to sudden increase or abnormality of the load pressure, and the normal working can be ensured. And the design of cartridge valve guarantees compact structure, small, occupation space is little, makes this valves become more convenient when installation, repair or cleaning.
Description
Technical Field
The utility model relates to the technical field of hydraulic control, in particular to an oil cylinder pressure maintaining valve group.
Background
In the prior art, in the design of an oil cylinder pressure maintaining valve group, a single-liquid control one-way valve is adopted to maintain the pressure of an oil cylinder, and when the sealing of the liquid control one-way valve fails, the oil cylinder cannot effectively maintain the pressure, so that the system is damaged; when the load pressure suddenly increases or is abnormal, the oil cylinder cannot be effectively protected from normal operation; by adopting the plate valve design, the valve group is large in design volume and heavy in weight, the material cost is increased, and the attractiveness is influenced.
Disclosure of Invention
According to an embodiment of the present utility model, there is provided an oil cylinder pressure maintaining valve group, including: the hydraulic control system comprises a valve block, a balance valve, a hydraulic control one-way valve, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port and a sixth oil port;
the balance valve and the hydraulic control one-way valve are arranged on the side face of the valve block;
the one-way valve is arranged on the top surface of the valve block, and one end of the one-way valve is connected with one end of the balance valve and one end of the hydraulic control one-way valve;
the first oil port, the second oil port, the fifth oil port and the sixth oil port are arranged on the side surface of the valve block;
the third oil port and the fourth oil port are arranged on the top surface of the valve block;
the first oil port is connected with the other end of the one-way valve;
two ends of the second oil port are respectively connected with the other end of the balance valve and an external oil tank;
the third oil port is connected with the other end of the hydraulic control one-way valve;
the fourth oil port is connected with the third oil port and is connected with the oil tank;
the fifth oil port is connected with the balance valve;
the sixth oil port is connected with the hydraulic control one-way valve.
Further, the method further comprises the following steps: and the overflow valve is arranged on the side surface of the valve block, one end of the overflow valve is connected with the third oil port, and the other end of the overflow valve is connected with the oil tank through the second oil port.
Further, the balance valve, the hydraulic control one-way valve, the one-way valve and the overflow valve are threaded cartridge valves.
Further, the method further comprises the following steps: the first standby oil port and the second standby oil port; the first standby oil port and the second standby oil port are arranged on the side face of the valve block, the first standby oil port is connected with the third oil port, and the second standby oil port is connected with the fourth oil port.
Further, the first standby oil port, the second oil port and the fifth oil port are arranged on the same side face of the valve block.
Further, the valve block is made of 45 # steel.
Further, the valve block is cuboid, and a plurality of mounting holes are formed in the valve block.
Further, the method further comprises the following steps: the plugs are inserted into pilot process holes generated in the valve block manufacturing process.
Further, the balance valve, the hydraulic control one-way valve and the overflow valve are arranged on the same side face of the valve block.
Further, a throttle is arranged at the pilot port of the balance valve, and the throttle adjusts the size of the pilot port.
According to the oil cylinder pressure maintaining valve group provided by the embodiment of the utility model, the one-way valve, the balance valve and the hydraulic control one-way valve are adopted for pressure maintaining, so that double protection can be realized on a load, namely, when the hydraulic control one-way valve is in sealing failure or is blocked, the one-way valve or the balance valve can be used for pressure maintaining on the load; meanwhile, the design of the overflow valve is added, so that the working pressure can be kept within the design pressure setting range due to sudden increase or abnormality of the load pressure, and the normal working can be ensured. And the design of cartridge valve guarantees compact structure, small, occupation space is little, makes this valves become more convenient when installation, repair or cleaning.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the technology claimed.
Drawings
FIG. 1 is a front view of a cylinder block according to an embodiment of the present utility model;
FIG. 2 is a top view of a cylinder block according to an embodiment of the present utility model;
FIG. 3 is a bottom view of a cylinder block according to an embodiment of the present utility model;
FIG. 4 is a left side view of a cylinder block according to an embodiment of the present utility model;
FIG. 5 is a right side view of a cylinder block according to an embodiment of the present utility model;
FIG. 6 is a rear view of a cylinder block according to an embodiment of the present utility model;
fig. 7 is a hydraulic line diagram of the cylinder block according to an embodiment of the present utility model.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, which further illustrate the present utility model.
Firstly, an oil cylinder pressure maintaining valve group according to an embodiment of the utility model will be described with reference to fig. 1 to 7, and the oil cylinder pressure maintaining valve group is used for hydraulic control and has a wide application field.
As shown in fig. 1 to 7, the cylinder pressure maintaining valve set according to the embodiment of the present utility model includes: the valve block 1, the balance valve 2, the hydraulic control check valve 3, the check valve 4, the first oil port A, the second oil port T, the third oil port C1, the fourth oil port C2, the fifth oil port P and the sixth oil port X.
Specifically, as shown in fig. 1 to 7, in this embodiment, a balance valve 2 and a pilot operated check valve 3 are disposed on the side of a valve block 1; the one-way valve 4 is arranged on the top surface of the valve block 1, and one end of the one-way valve 4 is connected with one end of the balance valve 2 and one end of the hydraulic control one-way valve 3; the first oil port A, the second oil port T, the fifth oil port P and the sixth oil port X are arranged on the side surface of the valve block 1; the third oil port C1 and the fourth oil port C2 are arranged on the top surface of the valve block 1; the first oil port A is connected with the other end of the one-way valve 4; two ends of the second oil port T are respectively connected with the other end of the balance valve 2 and an external oil tank; the third oil port C1 is connected with the other end of the hydraulic control one-way valve 3; the fourth oil port C2 is connected with the third oil port C1 and is connected with the oil tank; the fifth oil port P is connected with the balance valve 2; the sixth oil port X is connected with the hydraulic control one-way valve 3, and the oil cylinder pressure maintaining valve group realizes the control on the load pressure maintaining and the normal work of the protection oil cylinder through the balance valve 2, the hydraulic control one-way valve 3 and the one-way valve 4, and in the embodiment, an oil sealing ring is also arranged on the contact surface of the valve block 1 and the oil cylinder to prevent oil leakage of the contact surface.
The first oil port A is connected with a pump pressure oil source, the second oil port T is used as an oil drain port to be connected with a return oil tank, the third oil port C1 is connected with a rodless cavity of the oil cylinder, the fourth oil port C2 is connected with a rod cavity of the oil cylinder, and meanwhile, the oil return tank is connected through a three-way joint, the fifth oil port P and the sixth oil port X are connected with control oil sources, and the on-off of the balance valve 2 and the hydraulic control one-way valve 3 are respectively controlled. The first oil port A is communicated with a pressure oil source, and the oil cylinder stretches out after the pressure oil passes through the one-way valve 4 and the hydraulic control one-way valve 3; the fifth oil port P and the sixth oil port X are simultaneously communicated with a control oil source, and the oil cylinder is retracted due to the dead weight of the load; when the first oil port A is communicated with the pressure oil source, the oil cylinder stretches out, the pressure oil source of the first oil port A is closed at the moment, the oil cylinder starts to keep pressure, and in the pressure keeping process, the hydraulic control one-way valve 3 acts to protect the load from falling; when the hydraulic control one-way valve 3 fails, the one-way valve 4 and the balance valve 2 start to act, so that the oil cylinder is prevented from descending, and the system is protected.
Further, as shown in fig. 1 to 7, the method further comprises: the overflow valve 5, overflow valve 5 sets up in valve piece 1 side, and overflow valve 5 one end links to each other with third hydraulic fluid port C1, and the other end links to each other with the oil tank through second hydraulic fluid port T for the hydro-cylinder pressurize in-process, overflow valve 5 pressure can be adjusted, and when the pressure of hydro-cylinder reached the setting value, unnecessary hydraulic oil can flow back to the oil tank through overflow valve 5 to prevent that the hydro-cylinder from transshipping, can ensure because of load pressure suddenly increases or unusual, make operating pressure keep in the design pressure setting range, normal work.
Further, the balance valve 2, the hydraulic control one-way valve 3, the one-way valve 4 and the overflow valve 5 are threaded cartridge valves, so that the structure is compact, the volume is small, the occupied space is small, and the valve group is more convenient to install, repair or clean.
Further, the method further comprises the following steps: a first standby oil port B and a second standby oil port S; the first standby oil port B and the second standby oil port S are arranged on the side face of the valve block 1, the first standby oil port B is connected with the third oil port C1, the second standby oil port S is connected with the fourth oil port C2, the first standby oil port B and the second standby oil port S can be connected with a pressure sensor to detect real-time pressure of the third oil port C1 and the fourth oil port C2 respectively, and the first standby oil port B and the second standby oil port S are not used as standby oil ports to be plugged through plugs.
Further, as shown in fig. 6, the first backup oil port B, the second backup oil port S, the second oil port T and the fifth oil port P are disposed on the same side of the valve block 1, and the valve block has a compact structure, a small volume and simple manufacturing and maintenance.
Furthermore, the valve block 1 adopts 45 # steel, and the surface is covered with Gao Lin nickel, so that the rust prevention and corrosion resistance of the surface are enhanced, meanwhile, the valve block 1 is high in strength, easy to process, short in processing time, high in efficiency and greatly saved in cost.
Further, the valve block 1 is a cuboid, and a plurality of mounting holes 6 with phi of 8.5 are formed in the valve block 1 and are used for mounting and fixing the valve block 1 at a reliable position of an oil cylinder.
Further, the method further comprises the following steps: the plugs 7 are inserted into pilot process holes generated in the manufacturing process of the valve block 1.
Further, as shown in fig. 1, the balance valve 2, the hydraulic control one-way valve 3 and the overflow valve 5 are arranged on the same side face of the valve block 1, so that the structure is compact, the volume is small, and the occupied space is small.
Further, the pilot port (i.e., the fifth port P) of the balance valve 2 is provided with a throttle, and the size of the pilot port is adjusted by changing different throttles.
When the hydraulic oil pump is used, after the first oil port A is communicated with a pressure oil source, the pressure oil enters a rodless cavity of the oil cylinder through the third oil port C1 after passing through the one-way valve 4 and the hydraulic control one-way valve 3, and the oil cylinder stretches out, and meanwhile, hydraulic oil passes through the throttle to control the stretching speed of the oil cylinder. At the position where the oil cylinder extends, closing the pressure oil source of the first oil port A, maintaining the pressure of the oil cylinder, enabling oil in a rod cavity of the oil cylinder to enter the oil tank through the fourth oil port C2, retracting the oil cylinder due to the self weight of a load, enabling the hydraulic oil of the oil cylinder to return to the oil tank through the hydraulic control one-way valve 3, preventing the oil from flowing back to the hydraulic pump from the second oil port T, and protecting the load from falling; when the hydraulic control check valve 3 fails, the fifth oil port P and the sixth oil port X are simultaneously connected with a control oil source, the balance valve 2 and the hydraulic control check valve 3 are opened, the check valve 4 and the balance valve 2 are in action, the check valve 4 can be automatically closed, the oil in the hydraulic cavity of the oil cylinder is prevented from flowing back to the hydraulic pump, the balance valve 2 can be opened, the oil in the hydraulic cavity is allowed to flow back to one side of the hydraulic pump, thus the balance system is prevented from rapidly retracting due to the dead weight of a load, pressure maintaining is realized on the load, and the oil flows back to one side of the hydraulic pump from the third oil port C1, the hydraulic control check valve 3, the balance valve 2 and the second oil port T.
In the above, the cylinder pressure maintaining valve group according to the embodiment of the utility model is described with reference to fig. 1 to 7, and the one-way valve 4, the balance valve 2 and the hydraulic control one-way valve 3 are adopted to maintain pressure, so that double protection can be realized on a load, that is, when the hydraulic control one-way valve 3 is in sealing failure or is blocked, the one-way valve 4 or the balance valve 2 can maintain pressure on the load; meanwhile, the design of the overflow valve 5 is added, so that the working pressure can be kept within the design pressure setting range due to sudden increase or abnormality of the load pressure, and the normal working can be ensured. And the design of cartridge valve guarantees compact structure, small, occupation space is little, makes this valves become more convenient when installation, repair or cleaning.
It should be noted that in this specification the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.
While the present utility model has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the utility model. Many modifications and substitutions of the present utility model will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the utility model should be limited only by the attached claims.
Claims (10)
1. The utility model provides an hydro-cylinder pressurize valves which characterized in that contains: the hydraulic control system comprises a valve block, a balance valve, a hydraulic control one-way valve, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port and a sixth oil port;
the balance valve and the hydraulic control one-way valve are arranged on the side face of the valve block;
the one-way valve is arranged on the top surface of the valve block, and one end of the one-way valve is connected with one end of the balance valve and one end of the hydraulic control one-way valve;
the first oil port, the second oil port, the fifth oil port and the sixth oil port are arranged on the side face of the valve block;
the third oil port and the fourth oil port are arranged on the top surface of the valve block;
the first oil port is connected with the other end of the one-way valve;
two ends of the second oil port are respectively connected with the other end of the balance valve and an external oil tank;
the third oil port is connected with the other end of the hydraulic control one-way valve;
the fourth oil port is connected with the third oil port and the oil tank;
the fifth oil port is connected with the balance valve;
and the sixth oil port is connected with the hydraulic control one-way valve.
2. The cylinder-pressure maintaining valve set according to claim 1, further comprising: and the overflow valve is arranged on the side surface of the valve block, one end of the overflow valve is connected with the third oil port, and the other end of the overflow valve is connected with the oil tank through the second oil port.
3. The cylinder pressure maintaining valve set as set forth in claim 2, wherein said balance valve, said pilot operated check valve, said check valve and said relief valve are threaded cartridge valves.
4. The cylinder-pressure maintaining valve set according to claim 1, further comprising: the first standby oil port and the second standby oil port; the first standby oil port and the second standby oil port are arranged on the side face of the valve block, the first standby oil port is connected with the third oil port, and the second standby oil port is connected with the fourth oil port.
5. The cylinder-pressure maintaining valve set according to claim 4, wherein the first backup oil port, the second oil port, and the fifth oil port are provided on the same side of the valve block.
6. The cylinder block of claim 1, wherein the valve block is made of steel 45.
7. The cylinder pressure maintaining valve set as claimed in claim 1, wherein the valve block is a cuboid, and a plurality of mounting holes are formed in the valve block.
8. The cylinder-pressure maintaining valve set according to claim 1, further comprising: and the plugs are inserted into pilot process holes generated in the valve block manufacturing process.
9. The cylinder-pressure maintaining valve set according to claim 2, wherein the balance valve, the pilot-operated check valve and the relief valve are provided on the same side of the valve block.
10. The cylinder pressure maintaining valve set as set forth in claim 1, wherein a pilot port of the balance valve is provided with a throttle, and the throttle adjusts the size of the pilot port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322119079.7U CN220581401U (en) | 2023-08-08 | 2023-08-08 | Pressure maintaining valve group of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322119079.7U CN220581401U (en) | 2023-08-08 | 2023-08-08 | Pressure maintaining valve group of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581401U true CN220581401U (en) | 2024-03-12 |
Family
ID=90108689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322119079.7U Active CN220581401U (en) | 2023-08-08 | 2023-08-08 | Pressure maintaining valve group of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581401U (en) |
-
2023
- 2023-08-08 CN CN202322119079.7U patent/CN220581401U/en active Active
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