Diagram of an excavator

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JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. In the cab, an operator will have controls for both the movement of the excavator and the manipulation of the arm and attachments of the excavator. Pedals, levers, and joysticks are used in often complex combinations to control the excavator. In modern excavators, control and measurement will be augmented with touchscreens, displays, and other forms of feedback and input in the cab.

Diagram of an excavator

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August The swing drive is directly mounted to the house and consists of a swing motor and a swing gearbox.

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Excavators are heavy construction equipment primarily consisting of a boom , dipper or stick , bucket and cab on a rotating platform known as the "house" [1] - although the largest form ever, the dragline excavator , eliminated the dipper in favor of a line and winch. The modern excavator's house sits atop an undercarriage with tracks or wheels , being an evolution of the steam shovel which itself evolved into the power shovel when steam was replaced by diesel and electric power. All excavation-related movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid , with hydraulic cylinders and hydraulic motors , [2] which replaced winches, chains, and steel ropes. Excavators are also called diggers, scoopers, mechanical shovels, or degree excavators sometimes abbreviated simply to "". Tracked excavators are sometimes called "trackhoes" by analogy to the backhoe. Modern hydraulic excavators come in a wide variety of sizes.

Diagram of an excavator

Excavators are powerful machines that come in many different sizes. With their variety of attachments and the choice between wheeled or tracked machines, excavators are being used for all types of construction work. Whatever you choose to call them, there are three key sections to an excavator.

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The counterweight is to balance the movement of the excavator's boom, arm, and bucket. Author: mike zhang. Which reasonably distributes the hydraulic fluid to the various actuators. The seat is for the driver, which is convenient for the driver to operate the excavator. Posted: August 14, Related Products. The front idler on an excavator is a large wheel at the front of the track group that guides the track along its path and, in conjunction with the track springs, sets the tension of the track. The cylinder head includes intake and exhaust valve seats, valve guide holes, as well as intake and exhaust passages, etc. The tracks on an excavator are designed to provide ample grip and maneuverability. The function of link Protection is to prevent the track link from falling off. The driver's workplace, protects the driver, isolates noise, and maintains a comfortable temperature. Knuckled booms offer side-to-side movement of the arm, hinged booms are divided booms that allow for a new point of articulation, and long reach booms create the ability to extend the area with which an excavator can interact without moving the machine. Which converts hydraulic energy into the alternating motion of the hydraulic piston. The main hydraulic pump on an excavator transforms mechanical energy from the engine into hydraulic energy that is in turn supplied to hydraulic components through hydraulic fluid.

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The function of the track link assy is to connect the track shoes and receive the power transmitted by the sprocket. For the best experience on our site, be sure to turn on Javascript in your browser. In the case of a bucket, extending the cylinder will initiate a scooping movement and retracting the cylinder will dump the bucket. The track rollers of the excavator are mainly connected to the excavator frame and the track link. Through the cooperation of the swing Bearing slew ring , it drives the upper part of the excavator to do alternating swing motion. The engine control signal is output to ensure the engine normally working. In the cab, an operator will have controls for both the movement of the excavator and the manipulation of the arm and attachments of the excavator. The function of link Protection is to prevent the track link from falling off. Excavators are commonly used in a wide-range of ground conditions and must be able to both move in low-traction locations and remain firm and balanced while stationary. Excavator major parts include the arm, boom, bucket, hydraulic pump, main control valve, swing motor, travel motor, engine, etc. Most commonly, a final drive is divided into a hydraulic travel motor and a gearbox with gears designed to increase torque as it is applied to the tracks. The swing drive is directly mounted to the house and consists of a swing motor and a swing gearbox. The function of the intake valve is to suck fresh air into the engine and mix it with the fuel.