CN218325535U - Lifting hydraulic cylinder control valve group for large-scale lifting platform structure - Google Patents
Lifting hydraulic cylinder control valve group for large-scale lifting platform structure Download PDFInfo
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- CN218325535U CN218325535U CN202221933784.XU CN202221933784U CN218325535U CN 218325535 U CN218325535 U CN 218325535U CN 202221933784 U CN202221933784 U CN 202221933784U CN 218325535 U CN218325535 U CN 218325535U
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Abstract
The utility model discloses a lifting hydraulic cylinder control valve group for a large-scale lifting platform structure, which comprises a valve block which is connected with a rod cavity and a rodless cavity of a lifting hydraulic cylinder; a rodless cavity oil supply branch communicated with a rodless cavity of the hydraulic cylinder is arranged in the valve block, and a rodless cavity oil inlet valve, a rodless cavity one-way shutoff valve, a rodless cavity hydraulic control one-way valve, a rodless cavity pressure sensor and a rodless cavity safety valve are sequentially arranged on the rodless cavity oil supply branch; a rod cavity oil supply branch is also arranged in the valve block, and a rod cavity oil inlet valve, a rod cavity one-way shutoff valve, a rod cavity hydraulic control one-way valve, a rod cavity pressure sensor and a rod cavity safety valve are sequentially arranged on the rod cavity oil supply branch; the oil return ports of the rodless cavity safety valve and the rod cavity safety valve are connected with an oil tank; the rod cavity hydraulic control one-way valve and the rodless cavity hydraulic control one-way valve are connected with a pilot electromagnetic directional valve. The control valve group has the advantages of low cost, integrated installation, high safety and capability of effectively ensuring the stable control of the speed and the position state of the pile leg in the lifting process of the platform.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control design, especially, relate to a large-scale lift pneumatic cylinder valve unit for platform structure.
Background
The demand for large-scale lifting platform structures is increasing, and the large-scale lifting platform structures are particularly indispensable in the fields of wind power industry and maritime work lifting platform equipment, and a platform lifting hydraulic cylinder and a control valve group are key execution components of the equipment. At present, the price of the product is high, and the production period is long. Especially for a large platform structure, the number of the required jacking oil cylinders and control valve banks is large, and the cost is high; the load of the oil cylinders is large, and the load among the oil cylinders is unbalanced, so that the safety pressure of the oil cylinders is exceeded; the pipeline between the control valve group and the oil cylinder is long, energy loss is caused by pressure loss, the speed adjustment response is slow, and the oil cylinder can creep due to tiny leakage in the pipeline; the use of the device for a period of time may cause disadvantages such as cumulative deviation.
The control valve group of the lift cylinder, which has the advantages of universalization, modularization and high integration level of the functional valve group, needs to be developed urgently.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a large-scale elevating platform for structure hydraulic cylinder valve unit of universalization, modularization, integrated level height.
The utility model is realized in such a way, the lifting hydraulic cylinder control valve group for the large-scale lifting platform structure comprises a valve block (10), two working oil ports (101, 102) are arranged on the valve block, and the two working oil ports are respectively connected with a rod cavity (201) and a rodless cavity (202) of a lifting hydraulic cylinder (20);
a rodless cavity oil supply branch (30) communicated with a rodless cavity of the hydraulic cylinder is arranged in the valve block, and a rodless cavity oil inlet valve (301), a rodless cavity single-phase shutoff valve (302), a rodless cavity hydraulic control one-way valve (303) and a rodless cavity safety valve (304) are sequentially arranged on the rodless cavity oil supply branch; a rodless cavity pressure sensor (305) is arranged between the rodless cavity hydraulic control one-way valve (303) and the safety valve (304);
a rod cavity oil supply branch (40) communicated with a rod cavity of the hydraulic cylinder is further arranged in the valve block, and a rod cavity oil inlet valve (401), a rod cavity one-way shutoff valve (402), a rod cavity one-way hydraulic control valve (403) and a rod cavity safety valve (404) are sequentially arranged on the branch of the rod cavity oil supply branch (40); a rod cavity pressure sensor (405) is arranged between the rod cavity hydraulic control one-way valve (403) and the safety valve (404); the rodless cavity safety valve (304) and the rod cavity safety valve (404) are connected with an oil tank (60); the rod cavity hydraulic control one-way valve (403) and the rodless cavity hydraulic control one-way valve (303) are connected with a pilot electromagnetic directional valve (50), a P port of the pilot electromagnetic directional valve is connected with a pilot oil source, and a T port of the pilot electromagnetic directional valve is connected with an oil return tank (60).
Preferably, a parallel branch (70) connected with the adjacent control valve group is arranged in the valve block, and a throttle valve (701) and a stop valve (702) are arranged on the parallel branch.
The utility model adopts the above technical scheme have following advantage:
1. the control valve group has the advantages of low cost, integrated installation, high safety, capability of effectively ensuring the stable control of the speed and the position state of the pile leg in the lifting process of the platform, reliability of the starting and stopping state of the platform structure, and capability of ensuring that the safety pressure of the oil cylinder is not overloaded under any condition.
2. The control valve group has the functions of safe overpressure protection of a rodless cavity and a rod cavity, adjustable lifting speed, real-time pressure monitoring and the like.
3. The control valve group is integrated with the oil cylinder, can still stably work under heavy load, reversing impact and load disturbance conditions, and has high reliability.
4. Height errors accumulated over time by the control valve block can be manually eliminated.
5. The control valve group needs to have the characteristics of good expansibility, strong popularization and the like, is installed on the oil cylinder, and is convenient to be popularized to various lifting platforms synchronously with the oil cylinder.
Drawings
FIG. 1 is a hydraulic schematic diagram of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention.
In the figure, 10, a valve block; 101. a working oil port; 102. a working oil port; 20. a lifting hydraulic cylinder; 201. a rod cavity; 202. a rodless cavity; 3. a rodless cavity oil supply branch; 301. a rodless cavity oil inlet valve; 302. a rodless cavity single-phase shutoff valve; 303. a rodless cavity hydraulic control one-way valve; 304. a rodless chamber safety valve; 305. a rodless cavity pressure sensor; 40. the oil supply branch with the rod cavity; 401. a rod cavity oil inlet valve; 402. a one-way shutoff valve with a rod cavity; 403. a rod cavity hydraulic control one-way valve; 404. a rod cavity safety valve; 405. a rod cavity pressure sensor; 50. A pilot electromagnetic directional valve; 60. an oil tank; 70. a parallel branch; 701. a throttle valve; 702. and a stop valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a control valve set of a lifting hydraulic cylinder for a large lifting platform structure comprises a valve block 10, wherein two working oil ports 101 and 102 are arranged on the valve block and are respectively connected with a rod cavity 201 and a rodless cavity 202 of a lifting hydraulic cylinder 20;
a rodless cavity oil supply branch 30 communicated with a rodless cavity of the hydraulic cylinder is arranged in the valve block, and hydraulic oil of the rodless cavity oil supply branch 30 comes from a first oil supply port of the balance valve group; a rodless cavity oil inlet valve 301, a rodless cavity single shutoff valve 302, a rodless cavity hydraulic control one-way valve 303 and a rodless cavity safety valve 304 are sequentially arranged on the rodless cavity oil supply branch; a rodless cavity pressure sensor 305 is installed between the rodless cavity hydraulic control check valve 303 and the rodless cavity safety valve 304 and is used for detecting the pressure of the rodless cavity; specifically, one end of the rodless cavity oil inlet valve 301 is connected with an oil source, the other end of the rodless cavity oil inlet valve is connected with an oil inlet of the single shutoff valve 303, an oil outlet of the single shutoff valve 303 is connected with an oil inlet of the rodless cavity hydraulic control one-way valve, and an oil outlet of the rodless cavity hydraulic control one-way valve is connected with a safety valve and a rodless cavity of the oil cylinder;
a rod cavity oil supply branch 40 communicated with a rod cavity of the hydraulic cylinder is also arranged in the valve block, and hydraulic oil of the rod cavity oil supply branch 30 comes from a second oil supply port of the balance valve block; a rod cavity oil inlet valve 401, a rod cavity one-way shutoff valve 402, a rod cavity hydraulic control one-way valve 403 and a rod cavity safety valve 404 are sequentially arranged on a branch of the rod cavity oil supply branch 40; a rod cavity pressure sensor 405 is arranged between the rod cavity hydraulic control one-way valve 403 and the safety valve 404 for detecting the pressure in the rod cavity; the rodless chamber relief valve 304 and the rod chamber relief valve 404 are connected to the tank 60;
the rod cavity hydraulic control one-way valve 403 and the rodless cavity hydraulic control one-way valve 303 are connected with an A port of the pilot electromagnetic directional valve 50, a P port of the pilot electromagnetic directional valve is connected with a pilot oil source, and a T port of the pilot electromagnetic directional valve is connected with an oil return tank;
preferably, a parallel branch 70 connected with the adjacent control valve group is arranged in the valve block, a throttle valve 701 and a stop valve 702 are arranged on the parallel branch, and the parallel branch is used for eliminating accumulated errors among a plurality of oil cylinders in a period of time.
When the technical scheme is adopted in practical use, each set of control valve group and the oil cylinder are integrally installed, so that the space and the connecting pipeline are saved, and the response speed is improved.
Safety valves are arranged on the rodless cavity oil supply branch and the rodless cavity oil supply branch of each control valve group, so that the pressure safety of the rodless cavity and the rod cavity of the oil cylinder is ensured under any condition.
The control valve group is characterized in that a rodless cavity oil supply branch and a rodless cavity oil supply branch of each control valve group are respectively provided with a one-way throttle valve, and the action speed of the oil cylinder can be manually adjusted.
Two hydraulic control one-way valves and corresponding pilot control valves are arranged on the rodless cavity oil supply branch and the rodless cavity oil supply branch, and before the adjustment action, the hydraulic control one-way valves are opened, so that the oil cylinder is adjusted normally; after the adjustment is finished, the pilot valve is powered off, the two cavities of the oil cylinder are closed, and the oil cylinder crawling caused by accidental pipe explosion or small leakage of the pipeline is avoided.
Each set of control valve group and the oil cylinder are modularly integrated, and oil ports which can be connected with each other are arranged to facilitate module combination and expansion.
The leveling accumulated deviation is reliable: the position offset of a plurality of cylinders can be eliminated by a method of communicating all rodless cavities through manual ball valves periodically.
The utility model discloses, extend nimble, the commonality is strong: aiming at lifting platform systems with different tonnages and different shapes, the use requirements of various lifting platforms can be met only by increasing the number of lifting oil cylinders and the number of oil source pump sets and re-matching the parameters without changing all principles.
The application example is as follows: referring to fig. 2, in the present embodiment, the valve block is integrally installed on the support oil cylinder to form an oil cylinder assembly. One or more pile leg oil cylinder assemblies drive one set of pile legs, and the plurality of pile legs synchronously or asynchronously drive the platform to lift in batches. And two cavities of a plurality of independent distributed oil cylinder assemblies with control valve groups are connected to two balance valve outlets. The multiple sets of oil source pump sets of the whole set of oil source pump station realize cooperative control action through an electric control software program, synchronous lifting of multiple sets of lifting devices and asynchronous and stable lifting of each lifting device can be realized by controlling the action of a pilot electromagnetic valve, and the lifting process can be controlled automatically and manually.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. A lifting hydraulic cylinder control valve group for a large lifting platform structure comprises a valve block (10) arranged on a supporting leg oil cylinder; two working oil ports (101, 102) are arranged on the valve block and are respectively connected with a rod cavity (201) and a rodless cavity (202) of the lifting hydraulic cylinder (20);
a rodless cavity oil supply branch (30) communicated with a rodless cavity of the hydraulic cylinder is arranged in the valve block, and a rodless cavity oil inlet valve (301), a rodless cavity one-way shutoff valve (302), a rodless cavity hydraulic control one-way valve (303) and a rodless cavity safety valve (304) are sequentially arranged on the rodless cavity oil supply branch; a rodless cavity pressure sensor (305) is arranged between the rodless cavity hydraulic control one-way valve (303) and the rodless cavity safety valve (304);
a rod cavity oil supply branch (40) communicated with a rod cavity of the hydraulic cylinder is further arranged in the valve block, and a rod cavity oil inlet valve (401), a rod cavity one-way shutoff valve (402), a rod cavity one-way hydraulic control valve (403) and a rod cavity safety valve (404) are sequentially arranged on the branch of the rod cavity oil supply branch (40); a rod cavity pressure sensor (405) is arranged between the rod cavity hydraulic control one-way valve (403) and the safety valve (404); the rodless cavity safety valve (304) and the rod cavity safety valve (404) are connected with an oil tank (60);
the rod cavity hydraulic control one-way valve (403) and the rodless cavity hydraulic control one-way valve (303) are connected with a pilot electromagnetic directional valve (50), a port P of the pilot electromagnetic directional valve is connected with a pilot oil source, and a port T of the pilot electromagnetic directional valve is connected with an oil return tank (60).
2. The control valve group of the lifting hydraulic cylinder for the large lifting platform structure according to claim 1, characterized in that: and a parallel branch (70) connected with the adjacent control valve group is arranged in the valve block, and a throttle valve (701) and a stop valve (702) are arranged on the parallel branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221933784.XU CN218325535U (en) | 2022-07-22 | 2022-07-22 | Lifting hydraulic cylinder control valve group for large-scale lifting platform structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221933784.XU CN218325535U (en) | 2022-07-22 | 2022-07-22 | Lifting hydraulic cylinder control valve group for large-scale lifting platform structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218325535U true CN218325535U (en) | 2023-01-17 |
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ID=84872994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221933784.XU Active CN218325535U (en) | 2022-07-22 | 2022-07-22 | Lifting hydraulic cylinder control valve group for large-scale lifting platform structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325535U (en) |
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2022
- 2022-07-22 CN CN202221933784.XU patent/CN218325535U/en active Active
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