In stock Rexroth proportional valve 4WRA6W30-2X/G24N9K4/V

In stock Rexroth proportional valve 4WRA6W30-2X/G24N9K4/VIn terms of functional characteristics, the Rexroth proportional directional valve can accurately control the direction and magnitude of flow, achieving rapid switching of fluid between different circuits. By using proportional electromagnet operation, continuous adjustment of valve opening can be achieved, bringing higher flexibility and accuracy to fluid control. In addition, the design of the spring controlled valve core ensures that the valve automatically returns to its original position without electromagnetic force, ensuring the safe and stable operation of the system.

In order to meet the needs of different applications, the Rexroth proportional directional valve 4WRA6W30-2X/G24N9K4/V offers optional configurations of different valve cores, and users can choose the appropriate valve core type according to specific scenarios.

It is worth mentioning that for the Rexroth 4WRA proportional directional valve, Rexroth has also integrated control electrical components (OBE) to achieve intelligent control of the valve. Through the OBE module, users can easily achieve functions such as parameter setting, status monitoring, and fault diagnosis, effectively improving the operational efficiency of the system.

The application of hydraulic technology in the industrial field is becoming increasingly widespread, serving as a key factor in this fieldOne of the enterprises, Rexroth has always been committed to providing customers with high-performance and high-efficiency hydraulic products.

The working principle of REXROTH Rexroth proportional valve is as follows: when not braking, the piston is pushed by the force F applied by the sensing spring through the lever,

At the left end limit position, the valve leaves the valve seat and opens, allowing the input and output oil circuits to communicate.

When starting to brake, the brake fluid with pressure P1 from the booster enters through the inlet and is delivered to the rear brake pipeline through the valve from the outlet

At this time, the output hydraulic pressure P is equal to the input hydraulic pressure P1. When the brake pedal force increases, P1 and P2 increase synchronously.

However, due to the larger pressure bearing area on the left side of the piston compared to the right side, the force exerted on the left side of the piston is also greater than that on the right side

When the structure and other parameters of Rexroth proportional valve are constant, the initial control pressure P · of the regulating effect depends on the magnitude of the preload force of the sensing spring of the proportional valve,

Its range of variation is between 1.35 and 2.7 MPa Therefore, as long as the pre tension force of the spring varies with the actual axle load of the car, load sensing adjustment can be achieved.

The load sensing proportional valve is installed near the left rear wheel in such a way that when the axle load increases, the load sensing spring is stretched and the hydraulic PS at the inflection point increases; When the axle load is reduced PS decreases

This allows Ps to vary with the load, achieving load sensing adjustment and making the distribution of braking force between the front and rear wheels closer to the ideal distribution characteristic curve.

Classification of VICKERS proportional directional valves:

One type is switch control: either fully open or fully closed, the flow rate is either maximum or minimum, without any intermediate state, such as ordinary electromagnetic through valves, electromagnetic directional valves, and electro-hydraulic directional valves.

Another type is continuous control: the valve port can be opened to any desired degree to control the flow rate. This type of valve can be manually controlled, such as throttle valves, or electronically controlled, such as proportional valves and servo valves.

So the purpose of using proportional valves or servo valves is to achieve throttling control of flow through electronic control (of course, pressure control can also be achieved through structural modifications). Since it is throttling control, there is inevitably energy loss. Unlike other valves, servo valves have greater energy loss because they require a certain amount of flow to maintain the operation of the pre stage control oil circuit. The main valve of a servo valve is generally a slide valve structure like a directional valve, but the direction of the valve core is not driven by an electromagnet, but by the hydraulic pressure output by the pre stage valve. This is similar to electro-hydraulic directional valves, except that the pre stage valve of an electro-hydraulic directional valve is an electromagnetic directional valve, while the pre stage valve of a servo valve is an electromagnetic directional valve. A nozzle baffle valve or jet pipe valve with good dynamic characteristics.

Next, we will share with you an introduction to the basic structure of the Rexroth proportional valve 4WRPE model

4WRPE typeA proportional valve is a direct acting directional control valve with electrical position feedback and integrated electronic components (OBE).

settings

The basic components of a valve include:

Valve body (1) ▪

Control valve core (2) with compression springs (3.1 and 3.2) ▪

Control coil with position sensor (4) (optional electronic component protective film (8)) ▪

Travel coil (7) ▪

Integrated control electronics (OBE) with analog interface (6) (5) (optional attenuation valve board (9)) ▪

Integrated electronic components (OBE) compare control values with actual position values. In the case of control deviation, the relevant coils will be activated. Due to the change in magnetic force, the control valve core (2) will adjust against the corresponding spring. The stroke/control valve core cross-sectional area is controlled by the ratio to the control value. When the preset control value is 0 V, the electronic component adjusts the control valve core (2) to the center position.

error detection

If the following error occurs, electronic components will cause the control coil to lose power:

Below ZUI small power supply voltage ≤ 15 V (restart ≥ 17.5 V). ▪

Overall structure "F1": 2 mA below the ZUI low current control value (including cable interruption (current loop) of the control value line) ▪

The control valve core (2) is maintained in the mechanical center position (marked with the symbol V) under the action of compression springs (3.1 and 3.2) (not applicable to hydraulic center position).

Valve reducing plate "D"

The reducing valve plate (9) reduces the acceleration amplitude on the integrated electronic component (frequency>300 Hz).

In stock Rexroth proportional valve 4WRA6W30-2X/G24N9K4/V