CN218625648U - Electro-hydraulic single-action driving device - Google Patents
Electro-hydraulic single-action driving device Download PDFInfo
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- CN218625648U CN218625648U CN202223141420.0U CN202223141420U CN218625648U CN 218625648 U CN218625648 U CN 218625648U CN 202223141420 U CN202223141420 U CN 202223141420U CN 218625648 U CN218625648 U CN 218625648U
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Abstract
The utility model discloses an electro-hydraulic single-action driving device, which comprises a hydraulic unit, a connecting plate and a single-action driving device; the hydraulic unit comprises an oil pump, an outlet hydraulic control one-way valve, a motor and an oil tank; the single-action driving device comprises a main oil cylinder, an auxiliary oil cylinder and a gear rack mechanism; a piston plate at one side of the auxiliary oil cylinder is connected with a spring; one side of the gear rack mechanism is connected with a valve; the main oil cylinder and the auxiliary oil cylinder are connected in parallel and are connected with a hydraulic unit through a hydraulic pipeline, and the hydraulic pipeline is connected with an inserted electromagnetic reversing valve in parallel; one side of the plug-in electromagnetic reversing valve is connected with an oil tank through a hydraulic pipeline. The mechanism utilizes external power supply to drive the single-action hydraulic valve to open and close through electro-hydraulic conversion; meanwhile, on the basis of not increasing the diameter of the oil cylinder, an auxiliary oil cylinder is connected in parallel to increase the driving force so as to offset the spring resistance when the valve is opened. The mechanism has reasonable and compact structure and reliable function; through setting up the plug-in type electromagnetism switching-over valve, and then can make main, vice hydro-cylinder can return oil smoothly.
Description
Technical Field
The utility model relates to an electrohydraulic single-action driving device belongs to valve drive technical field.
Background
The single-acting hydraulic valve needs an external power pump station to provide high-pressure oil to drive a piston in a hydraulic cylinder to move so as to drive the valve to open; when the valve is closed, hydraulic oil can be directly discharged into the oil tank through the reversing function of the electromagnetic valve, and the valve is closed by spring force. When the valve is opened, the thrust of the oil cylinder needs to overcome the compression resistance of the spring to act on the opening movement process of the valve, so that the driving force for opening the valve with the same torque is larger than that of a double-acting hydraulic valve. Although the single-acting hydraulic valve can meet the requirement of automatically closing the valve without depending on external force under the unexpected condition, the single-acting hydraulic valve has the following defects: firstly, high-pressure oil needs to be supplied from the outside, and cannot be supplied by the self; second, the diameter of the cylinder required to open the same torque valve is larger than that of the double acting hydraulic valve, making installation difficult.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides an electrohydraulic formula nonoculture drive arrangement to usable outside power supply through the mode of electricity liquid conversion, drives the single-action hydraulic valve switch action. Meanwhile, on the basis of not increasing the diameter of the oil cylinder, an auxiliary oil cylinder is connected in parallel to increase the driving force so as to offset the spring resistance when the valve is opened.
In order to realize the purpose, the utility model discloses a technical scheme is: an electrohydraulic single-action driving device comprises a hydraulic unit, a connecting plate and a single-action driving device; the hydraulic unit is connected with the single-action driving device through a connecting plate; the hydraulic unit is a device for conveying high-pressure oil and comprises an oil pump, an outlet hydraulic control one-way valve, a motor and an oil tank; the single-action driving device comprises a main oil cylinder, an auxiliary oil cylinder and a gear rack mechanism; a piston plate at one side of the auxiliary oil cylinder is connected with a spring; one side of the gear rack mechanism is connected with a valve; the main oil cylinder and the auxiliary oil cylinder are connected in parallel and are respectively connected with the hydraulic unit through a hydraulic pipeline, and the hydraulic pipeline is also connected with an inserted electromagnetic reversing valve in parallel; one side of the plug-in electromagnetic reversing valve is connected with an oil tank through a hydraulic pipeline.
Furthermore, throttle valves are arranged between the main oil cylinder, the auxiliary oil cylinder and the hydraulic unit; and the throttle valve is used for discharging high-pressure oil to the main oil cylinder and the auxiliary oil cylinder into the oil tank.
The utility model has the advantages that: the mechanism drives the single-action hydraulic valve to open and close by external power supply and through an electro-hydraulic conversion mode; meanwhile, on the basis of not increasing the diameter of the oil cylinder, an auxiliary oil cylinder is connected in parallel to increase the driving force so as to offset the spring resistance when the valve is opened. The mechanism has reasonable and compact structure and reliable function; the mechanism can enable the main oil cylinder and the auxiliary oil cylinder to return oil smoothly by arranging the plug-in electromagnetic reversing valve.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic view of the working principle of the present invention.
In the figure: 1. hydraulic unit, 2, connecting plate, 3, single-action driving device, 31, main oil cylinder, 32, auxiliary oil cylinder, 33, gear rack mechanism, 34, spring, 4, valve, 5, throttle valve, 6, and plug-in electromagnetic reversing valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is for purposes of illustration only and is not intended to limit the scope of the present disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1 and 2, an electrohydraulic single-action driving device comprises a hydraulic unit 1, a connecting plate 2 and a single-action driving device 3; the hydraulic unit 1 is connected with the single-action driving device 3 through a connecting plate 2; the hydraulic unit 1 is a device for conveying high-pressure oil and comprises an oil pump, an outlet hydraulic control one-way valve, a motor and an oil tank; the single-action driving device 3 comprises a main oil cylinder 31, an auxiliary oil cylinder 32 and a gear rack mechanism 33; a piston plate at one side of the auxiliary oil cylinder 32 is connected with a spring 34; one side of the gear rack mechanism 33 is connected with a valve 4; the main oil cylinder 31 and the auxiliary oil cylinder 32 are connected in parallel and are respectively connected with the hydraulic unit 1 through a hydraulic pipeline, and the hydraulic pipeline is also connected with an inserted electromagnetic reversing valve 6 in parallel; one side of the plug-in type electromagnetic reversing valve 6 is connected with an oil tank through a hydraulic pipeline.
In the preferred embodiment, the throttle valve 5 is arranged between the main cylinder 31, the auxiliary cylinder 32 and the hydraulic unit 1; the throttle valve 5 is convenient for control of high-pressure oil discharge to the oil tank for the main oil cylinder 31 and the auxiliary oil cylinder 32, and meanwhile, the hydraulic unit 1 can be conveniently stopped when in a shutdown maintenance state.
The working principle is as follows:
the driving device mainly comprises a hydraulic unit 1, a connecting plate 2, a single-action driving device 3 and the like.
The hydraulic unit 1 outputs high-pressure oil after being electrified, the plug-in electromagnetic reversing valve (4) is electrified to act at the same time, an oil return path is cut off, and the high-pressure oil is simultaneously output to the main oil cylinder 31 and the auxiliary oil cylinder 32. Finally, the valve 4 is driven to the open position by the rack and pinion structure 33, overcoming the resistance of the spring 34.
After the hydraulic unit 1 loses power, high-pressure oil stops being output, meanwhile, an outlet hydraulic control one-way valve of the hydraulic unit is locked, and a hydraulic unit and an external interface are cut off. At this time, the plug-in electromagnetic directional valve 6 is de-energized to act, the oil return path is opened, the high-pressure oil in the main oil cylinder and the auxiliary oil cylinder is discharged into the oil tank through the throttle valve 5, and finally, the valve 4 is driven to a closed position through the gear rack structure 33 by the pressure of the spring 34.
The utility model discloses rational in infrastructure, the effect is obvious. The design of an auxiliary oil cylinder is ingeniously added, so that the defect that the conventional structure is large in size is overcome; a power unit is directly installed on the device by designing a new hydraulic control oil way, and an additional matched power source is omitted. The purpose of controlling the opening and closing of the single-acting valve through the device and an external connecting cable is really achieved.
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 modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (2)
1. An electro-hydraulic single-action driving device is characterized by comprising a hydraulic unit (1), a connecting plate (2) and a single-action driving device (3); the hydraulic unit (1) is connected with the single-action driving device (3) through a connecting plate (2); the hydraulic unit (1) is a device for conveying high-pressure oil and comprises an oil pump, an outlet hydraulic control one-way valve, a motor and an oil tank; the single-action driving device (3) comprises a main oil cylinder (31), an auxiliary oil cylinder (32) and a gear rack mechanism (33); a piston plate at one side of the auxiliary oil cylinder (32) is connected with a spring (34); one side of the gear rack mechanism (33) is connected with a valve (4); the main oil cylinder (31) and the auxiliary oil cylinder (32) are connected in parallel and are connected with the hydraulic unit (1) through a hydraulic pipeline, and the hydraulic pipeline is also connected with a plug-in electromagnetic reversing valve (6) in parallel; one side of the plug-in type electromagnetic reversing valve (6) is connected with an oil tank through a hydraulic pipeline.
2. An electro-hydraulic single-acting drive according to claim 1, characterized in that throttle valves (5) are provided between the master cylinder (31), the slave cylinder (32) and the hydraulic unit (1); the throttle valve (5) is convenient for controlling the main oil cylinder (31) and the auxiliary oil cylinder (32) to discharge high-pressure oil into the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223141420.0U CN218625648U (en) | 2022-11-25 | 2022-11-25 | Electro-hydraulic single-action driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223141420.0U CN218625648U (en) | 2022-11-25 | 2022-11-25 | Electro-hydraulic single-action driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218625648U true CN218625648U (en) | 2023-03-14 |
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ID=85449854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223141420.0U Active CN218625648U (en) | 2022-11-25 | 2022-11-25 | Electro-hydraulic single-action driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218625648U (en) |
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2022
- 2022-11-25 CN CN202223141420.0U patent/CN218625648U/en active Active
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