4708459 GRIP For HITACHI ZX200-5A 4HK1

The operating handle bullet of excavator is usually composed of operating lever, handle, connecting rod and hydraulic control valve. Among them, the handle is the core component of the handle bullet, and the movements of the excavator are controlled by the swing of the handle. The operating lever is used to connect the handle and the hydraulic control valve, and plays the role of transmitting action signals. The connecting rod is responsible for the linkage between the handle and the excavator. The main function of the operating handle bullet of the excavator is to control the actions of the excavator, including forward, backward, steering, bucket take-off and landing, arm extension and rotation and other operations. Specifically, by moving the handle up and down, left and right, the operator can control the bucket of the excavator to grab, unload and rotate. At the same time, the handle can also control the steering and forward and backward of the excavator to realize more flexible operation.

The operating handle head of excavator is an important controller of excavator, which is mainly used to control various operations of excavator. It usually includes main engine lever, auxiliary engine lever, walking lever and steering wheel. The main shaft is used to control the working actions of hydraulic components such as the arm, bucket and bucket bar of the excavator, and realize the functions of digging, loading and unloading. The auxiliary lever is used to control the rotating mechanism of the excavator and the telescopic action of the oil cylinder to realize the rotation and movement of the excavator; The walking rod is used to control the forward, backward, turning and braking of the excavator; The steering wheel is used to control the steering direction of the excavator.

The main purpose of the excavator's operating handle head includes controlling various actions and functions of the excavator. The working principle of the manipulator head of excavator mainly includes three aspects: power transmission, hydraulic control and mechanical control. Power transmission, the excavator control handle can transmit the driver's power to the hydraulic system through mechanical transmission, and then drive the excavator to work. This mainly depends on the control unit, oil circuit, hydraulic pump and other components in the cab, which need to be matched with each other to ensure the correctness and stability of excavator power transmission. Hydraulic control, the joystick controls the hydraulic system to realize the precise control of the excavator movement. The hydraulic system consists of liquid, oil pump, oil tank, hydraulic motor and hydraulic valve. The joystick can control the opening and closing of the hydraulic valve by changing the oil pressure and flow rate, and then control all the movements of the excavator. Mechanical control, in addition to the hydraulic system, the joystick can also control some actions of the excavator by controlling the mechanical transmission elements. For example, manipulating the handle to control the position of the lever can realize actions such as lifting or rotating the bucket arm. These mechanical control operations are simpler and rougher than hydraulic control operations, but the control effect is not as accurate as hydraulic control operations.