CN219139517U - Actuator control valve group suitable for driving gravity load - Google Patents
Actuator control valve group suitable for driving gravity load Download PDFInfo
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- CN219139517U CN219139517U CN202223280104.1U CN202223280104U CN219139517U CN 219139517 U CN219139517 U CN 219139517U CN 202223280104 U CN202223280104 U CN 202223280104U CN 219139517 U CN219139517 U CN 219139517U
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Abstract
The utility model discloses an actuator control valve group suitable for driving gravity load, which comprises an electromagnetic valve, two external control type hydraulic control one-way valves, a first hydraulic control one-way valve, a second hydraulic control one-way valve, a first manual stop valve and a second manual stop valve; the two external control type hydraulic control one-way valves are symmetrically arranged in the oil way, and one ends of the two external control type hydraulic control one-way valves are connected with the actuator; the electromagnetic valve is communicated with the oil port and is communicated with the oil paths where the two external control type hydraulic control one-way valves are positioned; the first hydraulic control one-way valve and the second manual stop valve are arranged in series in the oil paths where the two external control type hydraulic control one-way valves are positioned and are respectively communicated with the external control port and the oil port; the oil port is connected with the external control port in series with a second hydraulic control one-way valve, and the second hydraulic control one-way valve is connected with the first manual stop valve and the throttle valve in series and is connected with the oil return port. This scheme simple structure can also satisfy electronic and manual control simultaneously, greatly increased the reliability of this control valves when driving the actuator of gravity load.
Description
Technical Field
The utility model relates to the technical field of hydraulic pressure, in particular to an actuator control valve group suitable for driving gravity load.
Background
The actuator is a key component for implementing active vibration control and is an important link of an active control system; the actuator acts to apply a control force to the control object according to a determined control law. With the development of active vibration control technology, the requirements on the actuator are increasing. In recent years, on the basis of conventional fluid actuation, gas actuation, and electric actuators, various actuators such as piezoelectric ceramic actuators, piezoelectric thin film actuators, electrostrictive actuators, magnetostrictive actuators, shape memory alloy actuators, servo actuators, electrorheological fluid actuators, and the like have been studied and developed.
The actuator is controlled through the corresponding control valve group, but the control valve group of the existing actuator has complex structure and single action, and directly influences the reliability of the actuator in application.
It can be seen that how to improve the reliability of the actuator control valve set is a problem to be solved in the art.
Disclosure of Invention
Aiming at the technical problem that the reliability of the existing actuator control valve bank is low, the aim of the scheme is to provide an actuator control valve bank suitable for driving gravity load, which can ensure the reliability of the control valve bank when driving the gravity load actuator, and well solve the problems in the prior art.
In order to achieve the above purpose, the actuator control valve group suitable for driving gravity load comprises an electromagnetic valve, two external control type hydraulic control check valves, a first hydraulic control check valve, a second hydraulic control check valve, a first manual stop valve and a second manual stop valve; the two external control type hydraulic control one-way valves are symmetrically arranged in the oil path, and one ends of the two external control type hydraulic control one-way valves are connected with the actuator; the electromagnetic valve is communicated with the oil port and is communicated with the oil paths where the two external control type hydraulic control one-way valves are located; the first hydraulic control one-way valve and the second manual stop valve are arranged in series in oil ways where the two external control type hydraulic control one-way valves are located and are respectively communicated with the external control port and the oil port; and a second hydraulic control one-way valve is arranged in the oil path communicated with the oil port and the external control port in series, and the second hydraulic control one-way valve is respectively communicated with the first manual stop valve and the throttle valve in series and the oil return port.
Further, the two external control type hydraulic control one-way valves are matched with hydraulic oil adjusting components; the hydraulic oil adjusting assembly is connected in series with two external control type hydraulic control one-way valves and an oil way where the actuator is located.
Further, the hydraulic oil adjusting assembly comprises a proportional servo valve and a bidirectional balance valve; the proportional servo valve is connected with the two-way balance valve in series, one end of the proportional servo valve is connected with the oil inlet, and the other end of the proportional servo valve is connected with the two external control type hydraulic control one-way valves.
The actuator control valve group suitable for driving gravity load, which is provided by the scheme, has a simple structure, and can meet the requirements of electric and manual control, so that the reliability of the control valve group in driving the actuator of gravity load is greatly improved.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of an actuator control valve assembly suitable for driving a gravity load.
The following is a description of the components in the drawings:
1. the hydraulic control system comprises a solenoid valve 2, a proportional servo valve 3, a throttle valve 4.1, a first manual stop valve 4.2, a second manual stop valve 5.1, a first balance valve 5.2, a second balance valve 6.1, a first external control type hydraulic control check valve 6.2, a second external control type hydraulic control check valve 7.1, and a first hydraulic control check valve 7.2.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
Aiming at the technical problem that the reliability of the existing actuator control valve bank is low, the scheme provides the actuator control valve bank suitable for driving the gravity load, which has simple structure, and can meet the requirements of electric and manual control, thereby greatly increasing the reliability of the control valve bank when driving the actuator of the gravity load.
Referring to fig. 1, the actuator control valve group suitable for driving gravity load provided by the scheme comprises an electromagnetic valve 1, a proportional servo valve 2, a throttle valve 3, a first manual stop valve 4.1, a second manual stop valve 4.2, a first balance valve 5.1, a second balance valve 5.2, a first external control type hydraulic control one-way valve 6.1, a second external control type hydraulic control one-way valve 6.2, a first hydraulic control one-way valve 7.1 and a second hydraulic control one-way valve 7.2.
The electromagnetic valve 1 is a two-position three-way electromagnetic valve and comprises three oil ports, namely a first oil port, a second oil port and a third oil port.
The first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2 are symmetrically arranged in the oil way, one end of the first external control type hydraulic control one-way valve 6.1 and one end of the second external control type hydraulic control one-way valve 6.2 are connected with the actuator, and under the condition of no action, the first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2 are in a closed state and can be used as a hydraulic lock, so that the problem that the balance valve cannot be strictly locked in long-time position can be avoided
When a first oil port of the electromagnetic valve 1 is connected with the external control oil port PC and is electrified, a second oil port is communicated with oil ways where the first external control type hydraulic control check valve 6.1 and the second external control type hydraulic control check valve 6.2 are located, and is used for driving the first external control type hydraulic control check valve 6.1 and the second external control type hydraulic control check valve 6.2 to open through hydraulic flow, hydraulic oil flows through the first external control type hydraulic control check valve 6.1 and the second external control type hydraulic control check valve 6.2 and then is conveyed into a piston rod cavity where the actuator 8 is located, and the actuator 8 is driven to operate; the third oil port is communicated with an oil way where the proportional valve is located.
The external control mode (external control oil is connected through the Pc port) is adopted, so that the problems of instantaneous opening and closing of an internal control hydraulic lock and action coupling of the internal control hydraulic lock and a balance valve caused by internal control pressure fluctuation of a large inertia load in the operation process can be avoided, and the phenomenon of unstable load operation can be avoided;
meanwhile, in order to ensure that the movement of the load in the starting and stopping stages is more stable and avoid impact, a proportional servo valve 2, a first balance valve 5.1 and a second balance valve 5.2 are arranged in series at the oil port, the first balance valve 5.1 and the second balance valve 5.2 are matched to form a bidirectional balance valve, and an external control type hydraulic control one-way valve is used for controlling the oil pressure output by the actuator 8.
Through solenoid valve 1, first external control formula hydraulically controlled check valve 6.1, second external control formula hydraulically controlled check valve 6.2, proportional servo valve 2 and first balanced valve 5.1 and second balanced valve 5.2, constitute the electronic control structure of this control valves.
The external control type hydraulic control one-way valve is provided with a manual control structure in two paths of oil paths connected with the actuator 8, wherein the electromagnetic valve manual control structure comprises a first manual stop valve 4.1, a second manual stop valve 4.2, a first hydraulic control one-way valve 7.1, a second hydraulic control one-way valve 7.2 and a throttle valve 3.
The first hydraulic control one-way valve and the 7.1 second manual stop valve 4.2 are connected in series in the oil paths where the two external control type hydraulic control one-way valves are located and are respectively communicated with the external control port PMC and the oil port PM.
And a second hydraulic control one-way valve 7.2 is arranged in series in an oil path for communicating the oil port PM and the external control port PMC, and the second hydraulic control one-way valve 7.2 is respectively communicated with the first manual stop valve 4.1 and the throttle valve 3 in series and the oil return port T.
The integrated unit is composed of the electromagnetic valve 1, the throttle valve 3, the first manual stop valve 4.1, the second manual stop valve 4.2, the first balance valve 5.1, the second balance valve 5.2, the first external control type hydraulic control one-way valve 6.1, the second external control type hydraulic control one-way valve 6.2, the first hydraulic control one-way valve 7.1 and the first hydraulic control one-way valve 7.2, and a shell is arranged outside the integrated unit for dust prevention and water prevention of the integrated unit.
Meanwhile, a display window is arranged on the shell, and equipment inside the shell can be maintained and monitored by opening the display window.
In addition, the inside of the shell is provided with a heat radiation component, the shell is correspondingly provided with a ventilation opening, and heat generated by equipment in the shell during operation is radiated through the heat radiation component.
The following illustrates the working process of the present solution in a specific application, where the following needs to illustrate only one specific application example of the present solution, and is not limited to the present solution or specific functional configuration.
In addition, when the scheme is specifically implemented, some matched setting or control functions may need to be added according to practical situations. These supporting settings or control functions are only introduced to illustrate the implementation of the present solution, and are not necessarily essential to the present solution, but are not limited to the present solution or specific functional configurations.
Specifically, when the electromagnetic valve 1 is powered off, no hydraulic pressure flows through the external control type hydraulic control one-way valve, so that the external control type hydraulic control one-way valve is in a closed state, and the hydraulic cylinder can be reliably locked through the external control type hydraulic control one-way valve.
When the actuator is operated, the electric control structure is used in a normal state:
the solenoid valve 1 is energized, where the solenoid valve 1 corresponds to an actuated enabling valve.
After the electromagnetic valve 1 is powered on, external control oil is transmitted to the first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2 from the external control port PC through the electromagnetic valve 1, the first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2 are opened due to the pressure of hydraulic oil, and after the first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2 are opened, oil flows into a piston rod cavity of the actuator, and hydraulic pressure is provided for application of the actuator 8.
In addition, when hydraulic oil passes through the first external control type hydraulic control one-way valve 6.1 and the second external control type hydraulic control one-way valve 6.2, the hydraulic oil which is conveyed into the actuator 8 is regulated through the connection cooperation of the proportional servo valve 2 and the bidirectional hydraulic control one-way valve.
The balance valve can avoid stall phenomenon caused by gravity load when the actuator acts, so that the load can be stably lowered; by adopting the balance valve, the influence of the pressure at the oil return port T on the set pressure can be avoided, so that the action is more stable.
Under an emergency condition, the actuator can be slowly lowered to a safe position by a manual mode, and the operation mode is as follows: the first manual stop valve 4.1 and the second manual stop valve 4.2 are opened firstly, control pressure oil is connected to the PMC port, the first hydraulic control one-way valve 7.1 and the second hydraulic control one-way valve 7.2 are forcedly opened, a part of pressure oil in a pressure-bearing cavity (piston cavity) of the actuator 8 returns to a piston rod cavity of the actuator under the drive of gravity load to make up for the expansion of the volume of the pressure oil (the piston rod cavity is prevented from sucking empty, so that the sealing damage is caused, the actuator is in a differential state at the moment), and most of oil returns to an oil return port through a throttle valve 3 preset on an oil return path until the actuator 8 is completely retracted.
In the design, the piston rod cavity is considered to be at low pressure under the application, the first hydraulic control check valve 7.1, the second hydraulic control check valve 7.2 and the first manual stop valve 4.1 and the second stop valve 4.2 are connected in series, and the first manual stop valve 7.2 and the second stop valve 4.2 can be easily opened manually before the hydraulic control check valve is opened.
In addition, the design is convenient for the application of multiple actuators, the external control port PMC of each control valve group is accessed through the same external control oil, the multiple actuators ready for descending can be synchronously opened and slowly lowered, and each actuator connected to the same mechanical component can be synchronously lowered under the condition that each throttle valve 3 is properly set (according to the respective load). And when the manual operation is performed, the opening sequence and the asynchronous opening action of each stop valve are avoided, so that the mechanical part connected with each actuator is subjected to additional load.
In the occasion (such as the form of a turnover cylinder and a locking pin cylinder) needed, in order to avoid the influence of a small amount of retraction of the actuator after long-time extension on the actions of other mechanisms, pressure oil can be connected to the PM port, so that the actuator can extend in a small amount in a controlled manner, and the clamping phenomenon at other mechanisms is relieved. After the other interlocking actions are released, the manual descent control function is performed in the order described above.
The actuator control valve group suitable for driving the gravity load and composed of the scheme has a simple structure, and can meet the requirements of electric and manual control, so that the reliability of the control valve group in driving the actuator of the gravity load is greatly improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The actuator control valve group suitable for driving the gravity load is characterized by comprising an electromagnetic valve, two external control type hydraulic control one-way valves, a first hydraulic control one-way valve, a second hydraulic control one-way valve, a first manual stop valve and a second manual stop valve; the two external control type hydraulic control one-way valves are symmetrically arranged in the oil path, and one ends of the two external control type hydraulic control one-way valves are connected with the actuator; the electromagnetic valve is communicated with the oil port and is communicated with the oil paths where the two external control type hydraulic control one-way valves are located; the first hydraulic control one-way valve and the second manual stop valve are arranged in series in oil ways where the two external control type hydraulic control one-way valves are located and are respectively communicated with the external control port and the oil port; and a second hydraulic control one-way valve is arranged in the oil path communicated with the oil port and the external control port in series, and the second hydraulic control one-way valve is respectively communicated with the first manual stop valve and the throttle valve in series and the oil return port.
2. The actuator control valve assembly for driving a gravity load according to claim 1, wherein the two external control type hydraulic control check valves are cooperatively provided with a hydraulic oil adjusting assembly; the hydraulic oil adjusting assembly is connected in series with two external control type hydraulic control one-way valves and an oil way where the actuator is located.
3. An actuator control valve assembly adapted to drive a gravity load according to claim 2, wherein the hydraulic oil adjusting assembly comprises a proportional servo valve and a bi-directional balancing valve; the proportional servo valve is connected with the two-way balance valve in series, one end of the proportional servo valve is connected with the oil inlet, and the other end of the proportional servo valve is connected with the two external control type hydraulic control one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223280104.1U CN219139517U (en) | 2022-12-07 | 2022-12-07 | Actuator control valve group suitable for driving gravity load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223280104.1U CN219139517U (en) | 2022-12-07 | 2022-12-07 | Actuator control valve group suitable for driving gravity load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219139517U true CN219139517U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223280104.1U Active CN219139517U (en) | 2022-12-07 | 2022-12-07 | Actuator control valve group suitable for driving gravity load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219139517U (en) |
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2022
- 2022-12-07 CN CN202223280104.1U patent/CN219139517U/en active Active
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