CN213711469U - High-thrust self-resetting hydraulic actuator - Google Patents
High-thrust self-resetting hydraulic actuator Download PDFInfo
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- CN213711469U CN213711469U CN202022207878.6U CN202022207878U CN213711469U CN 213711469 U CN213711469 U CN 213711469U CN 202022207878 U CN202022207878 U CN 202022207878U CN 213711469 U CN213711469 U CN 213711469U
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Abstract
The utility model discloses a high thrust is from restoring to throne hydraulic pressure final controlling element, including the piston cylinder, have the piston in the piston cylinder, the piston divides the piston cylinder into first cavity and second cavity, the piston is installed on reducing piston rod, reducing piston rod includes the first piston rod that is located the first cavity and the second piston rod that is located the second cavity, the diameter of first piston rod is less than the diameter of second piston rod, first piston rod, second piston rod all wear out the piston cylinder; the first cavity and the second cavity are both connected with the oil pool through a direction control valve and a non-return hydraulic source, hydraulic oil in the oil pool enters the first cavity or the second cavity through the non-return hydraulic source and the direction control valve, the first cavity is connected with an adjustable rapid drain valve, and the adjustable rapid drain valve is connected with the oil pool; the utility model discloses a two effect reducing hydro-cylinders of no spring realize the intelligent control and the outage automatic re-setting protection of valve, realize high accuracy, the high reliability of valve, have long-life, big thrust, intelligent characteristics.
Description
Technical Field
The utility model relates to a high thrust is from restoring to throne hydraulic pressure final controlling element specifically is a replace spring automatic re-setting with energy storage power, realizes accurate control, adjustable flow's intelligent full hydraulic valve final controlling element (if control flap opens and close) through high thrust reducing piston rod.
Background
An intelligent electro-hydraulic actuator is mainly used in an industrial automatic control system. The middle and small thrust electric hydraulic actuator with spring reset is mainly used in heating and ventilation industry, and this kind of device is monopolized by a few foreign enterprises for a long time. And the electric hydraulic actuating device with high thrust of more than 3 ten thousand newtons, which is used in other occasions such as petroleum, chemical engineering and the like, is relatively rare. The high-thrust hydraulic actuator with automatic reset function is not mature, stable and reliable, and is limited by other conditions such as a spring, self-reset and the like, so far, both domestic and foreign.
For a widely used straight stroke valve, as a control device of a core technology, the following main advantages should be provided:
the response to a control signal is sensitive so as to achieve higher control precision;
when safety protection is needed to be implemented on the use site, the automatic reset valve can be quickly and accurately reset and closed under the condition that the power supply is disconnected.
At present, a large number of hydraulic actuating devices generally adopt single-acting oil cylinders, push pistons to extend out by hydraulic pressure, and reset by spring force in a reverse direction. However, due to the limitation of spring characteristics, a common hydraulic actuator has the defects that the spring force is biased, a structural part is damaged after the common hydraulic actuator is frequently used, the service life is shortened, the performance is unstable, even the spring is damaged due to collapse and the like, larger thrust is difficult to realize, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high thrust is from restoring to throne hydraulic pressure final controlling element is provided, the device has adopted the two effect reducing hydro-cylinders of no spring, realizes high accuracy, the high reliability of valve.
In order to solve the technical problem, the utility model discloses high thrust is from restoring to throne hydraulic pressure final controlling element, it includes the piston cylinder, the piston has the piston in the piston cylinder, the piston divides the piston cylinder into first cavity and second cavity, the piston is installed on reducing piston rod, reducing piston rod includes the first piston rod that is located the first cavity and the second piston rod that is located the second cavity, the diameter of first piston rod is less than the diameter of second piston rod, first piston rod, second piston rod all wear out the piston cylinder; the hydraulic oil in the oil pool enters the first cavity or the second cavity through the non-return hydraulic source and the directional control valve, the first cavity is connected with an adjustable quick drain valve, and the adjustable quick drain valve is connected with the oil pool.
In order to carry out accurate control, the high-thrust self-resetting hydraulic execution device comprises a controller, the controller is connected with a non-return hydraulic source, a direction control valve and an adjustable quick drain valve, and the controller controls the non-return hydraulic source, the direction control valve and the adjustable quick drain valve.
The reducing piston rod is connected with a displacement sensor, the displacement sensor is connected with a controller, and signals of the displacement sensor are transmitted to the controller. The signals of the displacement sensor or other sensors of temperature or flow rate in the system are used as the basis or basis for the accurate control of the controller.
Preferably, the ratio of the diameter of the second piston rod to the diameter of the first piston rod is 4 to 6.
The high-thrust self-resetting hydraulic execution device comprises an energy storage power supply, wherein the energy storage power supply is connected with a non-return hydraulic source and a controller, and the energy storage power supply provides power for the non-return hydraulic source, the controller and the like.
The non-return hydraulic source is used as hydraulic power, hydraulic oil in the oil pool is respectively sent to the first cavity or the second cavity of the piston cylinder through the directional control valve, and the displacement sensor is arranged near the upper part of the reducing piston rod. When the reducing piston rod moves in a reciprocating mode, displacement data of the reducing piston rod are transmitted to the controller through the displacement sensor to be processed, and all hydraulic elements are intelligently controlled to be organically matched, so that the reciprocating motion of the reducing piston rod of the actuator is achieved. The diameter of the first piston rod in the upper end of the reducing piston rod is D, the diameter of the second piston rod in the lower end of the reducing piston rod is D, and the reducing piston rod is designed as follows: D/D is 4-6, so that when the reducing piston rod reciprocates, the reducing piston rod moves downwards slowly and upwards quickly, and high-precision and intelligent control of the reducing piston rod is realized by combining flow control of the adjustable quick drain valve.
The utility model adopts the reducing piston rod with large thrust ratio, which meets the requirements that the piston rod moves downwards (the valve is opened) at a low speed V1 and the thrust F1 is required to be large; while moving up (valve closed), the thrust F2 is required to be relatively small and the speed V2 is required to be fast. V2/V1 is F1/F2 is 4-6, and the motion state of the reducing piston rod is accurately adjusted through closed-loop flow adjustment of an adjustable quick drain valve arranged in a displacement sensor, a controller and a first cavity of a piston cylinder. The utility model discloses a two effect reducing piston cylinders, having got rid of the spring reset element, full hydraulic system can easily realize the requirement of the various thrust of final controlling element more than thirty newtons.
The utility model discloses a no spring two effect reducing hydro-cylinder, full-hydraulic, electromagnetic reversing element and intelligent power realize the intelligent control and the outage automatic re-setting protection of valve, realize the high accuracy, the high reliability of valve, have long-life, big thrust, intelligent characteristics.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, the high-thrust self-resetting hydraulic actuator comprises a piston cylinder 7, a piston is arranged in the piston cylinder 7, the piston divides the piston cylinder 7 into a first cavity and a second cavity, the piston is mounted on a reducing piston rod 8, the reducing piston rod 8 comprises a first piston rod positioned in the first cavity and a second piston rod positioned in the second cavity, the diameter of the first piston rod is smaller than that of the second piston rod, and if the ratio of the diameter of the second piston rod to that of the first piston rod is 5, the first piston rod and the second piston rod both penetrate out of the piston cylinder 7.
The first cavity and the second cavity are connected with the oil pool through the directional control valve 4 and the non-return hydraulic source 1, hydraulic oil in the oil pool enters the first cavity or the second cavity through the non-return hydraulic source 1 and the directional control valve 4, the first cavity is connected with the adjustable rapid drain valve 9, and the adjustable rapid drain valve 9 is connected with the oil pool.
The high-thrust self-resetting hydraulic execution device comprises an energy storage power supply 3, wherein the energy storage power supply 3 is connected with a non-return hydraulic source 1 and a controller 5, and the energy storage power supply 3 provides electric energy for the non-return hydraulic source 1 and the controller 5.
The reducing piston rod 8 is connected with a displacement sensor 6, the displacement sensor 6 is connected with the controller 5, and signals of the displacement sensor 6 are transmitted to the controller 5. The signals from the displacement sensor 6 or other temperature, level or flow sensors 2 within the system are used as a basis or basis for accurate control by the controller 5.
The non-return hydraulic source 1, the direction control valve 4 and the adjustable rapid drain valve 9 are connected with the controller 5, and the controller 5 controls the non-return hydraulic source 1, the direction control valve 4 and the adjustable rapid drain valve 9 to realize accurate control.
When in work:
the hydraulic oil in the oil pool enters the first cavity through the non-return hydraulic source 1 and the directional control valve 4, at the moment, the hydraulic oil in the second cavity enters the oil pool through the directional control valve 4, the piston drives the reducing piston rod 8 to move downwards, and the displacement sensor 6 detects a downward movement signal.
The hydraulic oil in the oil pool enters the second cavity through the non-return hydraulic source 1 and the directional control valve 4, at the moment, the hydraulic oil in the first cavity enters the oil pool through the directional control valve 4, the piston drives the reducing piston rod 8 to move upwards, and the displacement sensor 6 detects a moving-up signal. Meanwhile, in order to realize quick control, hydraulic oil in the first cavity can quickly enter the oil pool through the adjustable quick drain valve 9.
The non-return hydraulic source 1 is used as hydraulic power and is respectively sent to a first cavity or a second cavity of a piston cylinder 7 through a directional control valve 4, and a displacement sensor 6 is arranged near the upper part of a reducing piston rod 8 (specifically on the first piston rod). When the reducing piston rod 8 moves back and forth, the displacement data is transmitted to the controller 5 through the displacement sensor 6 to be processed, and each hydraulic element is intelligently controlled to be organically matched, so that the back and forth movement of the reducing piston rod 8 of the actuator is realized. In the above-mentioned working process, the diameter of the upper end of the reducing piston rod 8 is D, and the diameter of the lower end is D, and the design is: D/D is 5, so that when the piston reciprocates, the downward speed is slow, the upward speed is fast, and the high-precision and intelligent control of the reducing piston rod 8 is realized by combining the flow control of the adjustable fast drain valve 9.
The above-mentioned embodiment does not limit the utility model in any way, and all the technical solutions that adopt the mode of equivalent replacement or equivalent transform to obtain all fall within the protection scope of the utility model.
Claims (5)
1. The high-thrust self-resetting hydraulic actuator is characterized by comprising a piston cylinder, wherein a piston is arranged in the piston cylinder, the piston divides the piston cylinder into a first cavity and a second cavity, the piston is arranged on a reducing piston rod, the reducing piston rod comprises a first piston rod positioned in the first cavity and a second piston rod positioned in the second cavity, the diameter of the first piston rod is smaller than that of the second piston rod, and the first piston rod and the second piston rod both penetrate out of the piston cylinder; the hydraulic oil in the oil pool enters the first cavity or the second cavity through the non-return hydraulic source and the directional control valve, the first cavity is connected with an adjustable quick drain valve, and the adjustable quick drain valve is connected with the oil pool.
2. The high-thrust self-resetting hydraulic actuator according to claim 1, characterized by comprising a controller, wherein the controller is connected with the check hydraulic pressure source, the direction control valve and the adjustable quick drain valve, and controls the check hydraulic pressure source, the direction control valve and the adjustable quick drain valve.
3. The high-thrust self-resetting hydraulic actuator according to claim 2, wherein: the reducing piston rod is connected with a displacement sensor, the displacement sensor is connected with a controller, and signals of the displacement sensor are transmitted to the controller.
4. The high-thrust self-resetting hydraulic actuator according to claim 1, wherein: the ratio of the diameter of the second piston rod to the diameter of the first piston rod is 4-6.
5. The high-thrust self-resetting hydraulic actuator according to claim 1, characterized by comprising an energy storage power supply, wherein the energy storage power supply is connected with the check hydraulic pressure source and the controller, and the energy storage power supply provides power for the check hydraulic pressure source and the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022207878.6U CN213711469U (en) | 2020-09-30 | 2020-09-30 | High-thrust self-resetting hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022207878.6U CN213711469U (en) | 2020-09-30 | 2020-09-30 | High-thrust self-resetting hydraulic actuator |
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| Publication Number | Publication Date |
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| CN213711469U true CN213711469U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022207878.6U Active CN213711469U (en) | 2020-09-30 | 2020-09-30 | High-thrust self-resetting hydraulic actuator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179989A (en) * | 2022-07-19 | 2022-10-14 | 中国铁道科学研究院集团有限公司 | Control system for air resistance emergency braking of railway vehicle and braking device |
-
2020
- 2020-09-30 CN CN202022207878.6U patent/CN213711469U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179989A (en) * | 2022-07-19 | 2022-10-14 | 中国铁道科学研究院集团有限公司 | Control system for air resistance emergency braking of railway vehicle and braking device |
| CN115179989B (en) * | 2022-07-19 | 2024-04-05 | 中国铁道科学研究院集团有限公司 | Control system and braking device for emergency braking of air resistance of railway vehicle |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220519 Address after: 832000 room 617-40, Kechuang building, No. 8, Dalian West Road, Beiquan Town, Shihezi City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Tianheng Intelligent Control Co.,Ltd. Address before: 210046 Room 101, unit 1, building 11, 19 Jinma Road, Qixia District, Nanjing City, Jiangsu Province Patentee before: Xia Bing Patentee before: Zhao Fei |
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| TR01 | Transfer of patent right |