CN216241550U - Hydraulic control system of pitching platform - Google Patents
Hydraulic control system of pitching platform Download PDFInfo
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- CN216241550U CN216241550U CN202122488396.7U CN202122488396U CN216241550U CN 216241550 U CN216241550 U CN 216241550U CN 202122488396 U CN202122488396 U CN 202122488396U CN 216241550 U CN216241550 U CN 216241550U
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Abstract
And a hydraulic control system of the pitching platform. The hydraulic system comprises a hydraulic cylinder A, a hydraulic cylinder B, a servo valve I, an overflow valve and a hydraulic pump; a rod cavity of the hydraulic cylinder A and a rodless cavity of the hydraulic cylinder B are respectively communicated with an oil port B of the servo valve I; and a rodless cavity of the hydraulic cylinder A and a rod cavity of the hydraulic cylinder B are respectively communicated with an oil port A of the first servo valve. The hydraulic cylinder A and the hydraulic cylinder B adopt a cross parallel push-pull connection method, the actions of pushing and pulling two oil cylinders are controlled by a servo valve, a rodless cavity of a thrust oil cylinder and a rod cavity of a tension oil cylinder are connected in parallel and controlled by an oil inlet of the servo valve, the rod cavity of the thrust oil cylinder and the rodless cavity of the tension oil cylinder are connected in parallel and controlled by an oil return port of the servo valve, an inclination angle sensor arranged on a pitching platform feeds back the inclination angle information of the pitching platform to a controller, the actions of the servo valve are controlled by an algorithm of the controller, and therefore the pitching control of a pitching mechanism is achieved. The utility model has the characteristics of compact structure, low cost, high coordination of the oil cylinder and the like.
Description
Technical Field
The utility model relates to a bearing platform of detection equipment (such as a radar and the like), in particular to a hydraulic control system of a pitching platform.
Background
For a pitching mechanism, a basic oil cylinder cross independent push-pull connection method is to independently control the push-pull action of an oil cylinder through each servo valve so as to realize the pitching action of a platform. The inclination angle sensor arranged on the pitching platform feeds back the inclination angle information of the pitching platform to the controller, and the action of the servo valve is controlled through the algorithm of the controller, so that the pitching control of the pitching mechanism is realized.
When the pitching action speed is required to be controlled to be high, the synchronous response action of the extending oil cylinder and the retracting oil cylinder is required, the precision requirement on a hydraulic system is high, and the following problems often occur during actual use:
1. the oil cylinder cross independent push-pull connection method needs to have high control precision on two oil cylinders which are pushed and pulled, when the oil cylinders act, the instability of the action change of the oil cylinders can be caused when the load is unbalanced, for example, the roughness of the inner cylinder diameter surface of the oil cylinder is inconsistent, and the instability can cause the generation of a 'stronger' condition in the action process of the two oil cylinders, namely, the action of the two oil cylinders is not coordinated.
2. The oil cylinder cross independent push-pull connection method needs the servo valve to provide very small flow when the pitching platform needs low-speed movement, such as rotation at 0.01 degree/s, and especially greatly improves the flow requirement and resolution requirement of the servo valve at the pitching limit position, thereby causing difficulty in selecting the type of the servo valve and cost improvement.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the hydraulic control system of the pitching platform, which has compact structure, reduces the cost and improves the coordination of the oil cylinder.
The technical scheme of the utility model is as follows: the hydraulic control system of the pitching platform comprises a hydraulic cylinder A, a hydraulic cylinder B, a servo valve I, an overflow valve and a hydraulic pump;
a rod cavity of the hydraulic cylinder A and a rodless cavity of the hydraulic cylinder B are respectively communicated with an oil port B of the first servo valve;
a rodless cavity of the hydraulic cylinder A and a rod cavity of the hydraulic cylinder B are respectively communicated with an oil port A of the first servo valve;
the hydraulic pump is communicated with a first oil port P of the servo valve through a first oil path P;
an oil port R of the servo valve I is communicated with an oil tank through an oil way T;
the overflow valve is connected between the P oil way and the T oil way.
The hydraulic cylinder C, the hydraulic cylinder D and the servo valve II are further included;
a rod cavity of the hydraulic cylinder C and a rodless cavity of the hydraulic cylinder D are respectively communicated with an oil port B of the servo valve II;
a rodless cavity of the hydraulic cylinder C and a rod cavity of the hydraulic cylinder D are respectively communicated with an oil port A of the servo valve II;
the hydraulic pump is communicated with a hydraulic port P of the servo valve II through a hydraulic passage P;
and the oil port R of the servo valve II is communicated with the oil tank through a T oil way.
And the P oil way is provided with a one-way valve and a first filter which are sequentially connected.
The first filter is provided with a first differential pressure transmitter connected in parallel with the first filter.
And a pressure stabilizing branch used for stabilizing the pressure of the point oil way is arranged on the P oil way.
The pressure stabilizing branch comprises a pressure sensor, a pressure gauge and an energy accumulator;
the pressure sensor is connected with the oil way P through an oil way I;
the pressure gauge and the energy accumulator are respectively connected to the first oil way.
The accumulator is communicated with the first oil way through a stop valve.
And a cooler is arranged on the T oil way.
And a second filter is arranged on the T oil way.
The second filter is provided with a second differential pressure transmitter connected in parallel with the second filter.
The hydraulic system comprises a hydraulic cylinder A, a hydraulic cylinder B, a servo valve I, an overflow valve and a hydraulic pump; a rod cavity of the hydraulic cylinder A and a rodless cavity of the hydraulic cylinder B are respectively communicated with an oil port B of the servo valve I; and a rodless cavity of the hydraulic cylinder A and a rod cavity of the hydraulic cylinder B are respectively communicated with an oil port A of the first servo valve. The hydraulic cylinder A and the hydraulic cylinder B adopt a cross parallel push-pull connection method, the actions of pushing and pulling two oil cylinders are controlled by a servo valve, a rodless cavity of a thrust oil cylinder and a rod cavity of a tension oil cylinder are connected in parallel and controlled by an oil inlet of the servo valve, the rod cavity of the thrust oil cylinder and the rodless cavity of the tension oil cylinder are connected in parallel and controlled by an oil return port of the servo valve, an inclination angle sensor arranged on a pitching platform feeds back the inclination angle information of the pitching platform to a controller, the actions of the servo valve are controlled by an algorithm of the controller, and therefore the pitching control of a pitching mechanism is achieved. The utility model has the characteristics of compact structure, low cost, high coordination of the oil cylinder and the like.
Drawings
Figure 1 is a schematic diagram of the hydraulic principle of the utility model,
figure 2 is a structural schematic diagram of the cross-parallel push-pull connection state (the direction of a top arc arrow in the figure is the moving direction of the platform),
figure 3 is a schematic perspective view of a pitch platform,
FIG. 4 is a graph of the relationship between the flow rate of the servo valve and the pitch angle in the cross-independent connection (in the graph, the abscissa represents the pitch angle (DEG), and the ordinate represents the flow rate (L/min)),
FIG. 5 is a graph showing a relationship between a flow rate of a servo valve and a pitch angle in a cross-parallel connection method (in the graph, an abscissa indicates a pitch angle (deg) and an ordinate indicates a flow rate (L/min));
in the figure, 11 is a cylinder a, 12 is a cylinder B, 21 is a cylinder C, 22 is a cylinder D, and 31 is a first servo valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in FIGS. 1-5, the hydraulic control system of the pitching platform comprises a hydraulic cylinder A11, a hydraulic cylinder B12, a first servo valve 31, an overflow valve and a hydraulic pump;
a rod cavity of the hydraulic cylinder A11 and a rodless cavity of the hydraulic cylinder B12 are respectively communicated with a port B of the first servo valve 31;
a rodless cavity of the hydraulic cylinder A11 and a rod cavity of the hydraulic cylinder B12 are respectively communicated with an oil port A of the servo valve I31;
the hydraulic pump is communicated with a P oil port of the first servo valve 31 through a P oil path (an oil path of the hydraulic pump connected to the P oil port of the first servo valve 31);
an R oil port of the first servo valve 31 is communicated with the oil tank through a T oil path (an oil path from the T oil port to the oil tank);
the overflow valve is connected between the P oil way and the T oil way.
The hydraulic cylinder C21, the hydraulic cylinder D22 and the servo valve II are further included;
a rod cavity of the hydraulic cylinder C21 and a rodless cavity of the hydraulic cylinder D22 are respectively communicated with a port B of the servo valve II;
a rodless cavity of the hydraulic cylinder C21 and a rod cavity of the hydraulic cylinder D22 are respectively communicated with an oil port A of the servo valve II;
the hydraulic pump is communicated with a hydraulic port P of the servo valve II through a hydraulic passage P;
and the oil port R of the servo valve II is communicated with the oil tank through a T oil way.
And the P oil way is provided with a one-way valve and a first filter which are sequentially connected.
The first filter is provided with a first differential pressure transmitter connected in parallel with the first filter.
When the oil inlet filter is blocked, the pressure difference signal generator converts the blocking signal into an electric signal deaf to give an alarm to the controller.
And a pressure stabilizing branch used for stabilizing the pressure of the point oil way is arranged on the P oil way.
The pressure stabilizing branch comprises a pressure sensor, a pressure gauge and an energy accumulator;
the pressure sensor is connected with the oil way P through an oil way I;
the pressure gauge and the energy accumulator are respectively connected to the first oil way.
The accumulator is communicated with the first oil way through a stop valve.
And a cooler is arranged on the T oil way.
And a second filter is arranged on the T oil way.
The second filter is provided with a second differential pressure transmitter connected in parallel with the second filter.
The working principle of the scheme is as follows:
the hydraulic cylinder A11 and the hydraulic cylinder B12 adopt a cross parallel push-pull connection method, the actions of pushing and pulling two oil cylinders are controlled by a servo valve, a rodless cavity of a thrust oil cylinder and a rod cavity of a tension oil cylinder are connected in parallel and controlled by an oil inlet of the servo valve, the rod cavity of the thrust oil cylinder and the rodless cavity of the tension oil cylinder are connected in parallel and controlled by an oil return port of the servo valve, an inclination angle sensor arranged on a pitching platform feeds back inclination angle information of the pitching platform to a controller, and the actions of the servo valve are controlled by an algorithm of the controller, so that pitching control of a pitching mechanism is realized.
The present case structural advantage does:
1. the hydraulic cylinder A11 and the hydraulic cylinder B12 adopt a cross parallel push-pull connection method, so that when the hydraulic cylinders are in an unbalanced load condition in the action process, the thrust hydraulic cylinders and the tension hydraulic cylinders are coordinated in the motion state, and the generation of a 'stronger' condition is avoided.
2. When the pitching platform moves at a low speed, the rodless cavity of the thrust hydraulic cylinder and the rod cavity of the tension hydraulic cylinder are connected in parallel and controlled by the oil inlet of the servo valve, the flow of the rodless cavity of the thrust hydraulic cylinder is reduced in the pitching process, and the flow of the rod cavity of the tension hydraulic cylinder is increased in the pitching process, so that the flow of the servo valve for controlling the two hydraulic cylinders is kept in a relatively stable and high-numerical-value state by complementation of the flows of the two hydraulic cylinders in the pitching process, the requirements on the servo valve are greatly reduced, the selection of the servo valve is facilitated, the number of the servo valves is reduced, and the cost is reduced.
Fig. 4 and 5 show the flow requirements of two different connection methods for the servo valve, the flow change of the servo valve of the hydraulic cylinder cross independent connection method is large, the flow value is very small at the limit position, and the high requirements on the selection and control of the servo valve are met; the hydraulic cylinder cross parallel connection method has small flow change of the servo valve, and larger flow value, thereby being convenient for selecting and controlling the servo valve.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (10)
1. The hydraulic control system of the pitching platform is characterized by comprising a hydraulic cylinder A, a hydraulic cylinder B, a servo valve I, an overflow valve and a hydraulic pump;
a rod cavity of the hydraulic cylinder A and a rodless cavity of the hydraulic cylinder B are respectively communicated with an oil port B of the first servo valve;
a rodless cavity of the hydraulic cylinder A and a rod cavity of the hydraulic cylinder B are respectively communicated with an oil port A of the first servo valve;
the hydraulic pump is communicated with a first oil port P of the servo valve through a first oil path P;
an oil port R of the servo valve I is communicated with an oil tank through an oil way T;
the overflow valve is connected between the P oil way and the T oil way.
2. The hydraulic control system for a pitch platform of claim 1, further comprising a hydraulic cylinder C, a hydraulic cylinder D, and a second servo valve;
a rod cavity of the hydraulic cylinder C and a rodless cavity of the hydraulic cylinder D are respectively communicated with an oil port B of the servo valve II;
a rodless cavity of the hydraulic cylinder C and a rod cavity of the hydraulic cylinder D are respectively communicated with an oil port A of the servo valve II;
the hydraulic pump is communicated with a hydraulic port P of the servo valve II through a hydraulic passage P;
and the oil port R of the servo valve II is communicated with the oil tank through a T oil way.
3. The hydraulic control system of a pitching platform according to claim 1, wherein a check valve and a first filter are arranged on the P oil path and are connected in sequence.
4. The hydraulic control system for a pitching platform of claim 3, wherein said filter one is provided with a first differential pressure signal transmitter connected in parallel therewith.
5. The hydraulic control system of a pitching platform of claim 3, wherein a pressure stabilizing branch for stabilizing the point oil path pressure is provided on said P oil path.
6. The hydraulic control system of a pitch platform of claim 5, wherein the surge branch comprises a pressure sensor, a pressure gauge, and an accumulator;
the pressure sensor is connected with the oil way P through an oil way I;
the pressure gauge and the energy accumulator are respectively connected to the first oil way.
7. The hydraulic control system for a pitch platform of claim 6, wherein the accumulator is in communication with the first oil passage through a shut-off valve.
8. The hydraulic control system for a pitch platform of claim 1, wherein a cooler is provided on the T-oil path.
9. The hydraulic control system of a pitching platform of claim 1 or 8, wherein a second filter is disposed on the T oil path.
10. The hydraulic control system of a pitching platform of claim 9, wherein said second filter is provided with a second differential pressure transmitter connected in parallel therewith.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122488396.7U CN216241550U (en) | 2021-10-15 | 2021-10-15 | Hydraulic control system of pitching platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122488396.7U CN216241550U (en) | 2021-10-15 | 2021-10-15 | Hydraulic control system of pitching platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241550U true CN216241550U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122488396.7U Active CN216241550U (en) | 2021-10-15 | 2021-10-15 | Hydraulic control system of pitching platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216241550U (en) |
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2021
- 2021-10-15 CN CN202122488396.7U patent/CN216241550U/en active Active
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