Diagram of an excavator

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser. The main working parts of excavators generally include standard buckets, reinforced buckets, rock buckets, etc.

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. View Excavator Cabs. The length of the boom and the stick define the reach and digging depth of an excavator.

Diagram of an excavator

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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.

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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. One of the core aspects of an excavator is its ability to rotate the housing and arm — multiple times and in both directions. The functionality of this free-wheeling spinning allows an excavator operator to quickly and efficiently reposition the bucket, adjust the digging angle, and move materials from a pile in the front of the machine to a truck waiting behind it. This infinite, omnidirectional twisting is one of the key factors that make an excavator such a versatile and important machine on a construction site, but, though it might seem simple enough, it takes smart design and clever mechanics to pull off this feat. From swing motors to rotate the housing to the slewing ring that allows it to smoothly spin, a lot of well-designed parts come into play to allow the machine to rotate. And one part that often gets overlooked is the swivel. Since many of the parts on an excavator are hydraulic, the upper hydraulic controls, pumps, and valves need to be connected to the lower motors and final drives that propel the machine. An excavator swivel connects the lower and upper hydraulics of the machine through a center shaft and an outside housing.

Diagram of an excavator

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.

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The slewing ring or slewing ring bearing, turntable bearing, slewing gear is a horizontally mounted bearing with an attached gear. We hope you found this diagram and these simple, short definitions helpful in your excavator knowledge search. The engine nozzle controls the amount and time of diesel injection, and these parameters are controlled by the engine controller unit. It supports the weight of the excavator. The swing drive is directly mounted to the house and consists of a swing motor and a swing gearbox. At its most simple, the engine on an excavator converts energy generally from diesel fuel into motion. Read the signals of the relevant sensors. For the best experience on our site, be sure to turn on Javascript in your browser. Learn More About Slewing Rings. Which reasonably distributes the hydraulic fluid to the various actuators. This kit includes a full or partial seal when you want to repair your engine. Most track springs work in conjunction with a grease cylinder to set track tension. The engine control signal is output to ensure the engine normally working. View Excavator Recoil Springs.

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Connect the bucket and cylinder to increase the range of activities of the bucket. The function of the valve is to input air into the engine and discharge the exhaust gas after combustion. In modern excavators, control and measurement will be augmented with touchscreens, displays, and other forms of feedback and input in the cab. It supports the weight of the excavator. Pedals, levers, and joysticks are used in often complex combinations to control the excavator. Excavators generally use a piston hydraulic pump. Through the cooperation of the swing Bearing slew ring , it drives the upper part of the excavator to do alternating swing motion. The boom is controlled by hydraulic cylinders pinned to the house and the boom. The boom is mounted on the track frame. Usually, an excavator has several track rollers. Engine rebuild kit including piston,liner, pin, piston rings, snap rings, and bushing. By extending and contracting the cylinder rods from the cylinder housing the operator is able to lift and lower the boom. View Excavator Booms. Foot pilot valve belong to the control components in the hydraulic system. Learn More About Final Drives.