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Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
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The central slewing joint is a key accessory in engineering machinery such as excavators, cranes, graders, and tower cranes. Its function is to connect the hydraulic pipelines between the fixed and rotating parts of the entire hydraulic system, so that the upper and lower parts of the system's hydraulic pipelines can complete 360° relative rotational motion without interference. The central rotary joint includes a rotary shaft, a rotary housing sleeved on the rotary shaft, a rotary joint, a seat plate and a fixed plate. The rotary joint is connected to the seat plate, the lower end of the seat plate is connected to the fixed plate, and the lower end of the rotary housing is provided with a cover that covers the end of the rotary shaft. The end cover at the bottom of the rotary shaft is provided with several axial oil grooves. The inner wall of the rotary housing is provided with several annular oil grooves connected with the axial oil grooves. Each annular oil groove is provided with high-pressure rotating combination sealing rings on both sides. A friction ring is provided between the lower end face and the inner wall of the end cover, and two low-pressure O-rings are provided between the upper part of the rotary shaft and the upper part of the rotary housing.
As a key component for oil circulation in the excavator's upper and lower hydraulic systems, the central rotary joint is the hub that connects the hydraulic power source, control model and lower body actuators of the upper body of the excavator. It plays an important role in realizing the flexible rotary motion of the upper car. Crucial role. The central rotary joint is composed of an inner cylinder and an outer shell. The inner cylinder is cast with an annular groove oil passage. Each oil passage has an opening connected to the lower oil outlet. At the same time, the cylinder of the central rotary joint and the shell Each adjacent oil channel is sealed by a sealing rubber ring (oil seal) to ensure that the hydraulic oil of different circuits does not interfere with each other when the central rotary joint cylinder and the shell move relative to each other.
The four hydraulic oil pipes on the upper body that control left and right travel, the two hydraulic oil pipes that control high and low speeds, and the oil pipes for the bulldozer are all connected to the housing of the central rotary joint. The lower body hydraulic oil pipes that should be directly connected to these oil pipes are connected to the central cylinder of the central rotary joint. Since there are circles of annular grooved oil passages on the central rotary joint, the hydraulic circuit with the lower body of the excavator can be connected no matter how the upper body of the excavator rotates; and the rubber ring is sealed between the annular grooved oil passages ( Under the action of oil seal), the hydraulic oil in each circuit will not interfere with each other, which is equivalent to each hydraulic pipeline being directly connected.
Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
tse@partssea.com | sales@partssea.com
The central slewing joint is a key accessory in engineering machinery such as excavators, cranes, graders, and tower cranes. Its function is to connect the hydraulic pipelines between the fixed and rotating parts of the entire hydraulic system, so that the upper and lower parts of the system's hydraulic pipelines can complete 360° relative rotational motion without interference. The central rotary joint includes a rotary shaft, a rotary housing sleeved on the rotary shaft, a rotary joint, a seat plate and a fixed plate. The rotary joint is connected to the seat plate, the lower end of the seat plate is connected to the fixed plate, and the lower end of the rotary housing is provided with a cover that covers the end of the rotary shaft. The end cover at the bottom of the rotary shaft is provided with several axial oil grooves. The inner wall of the rotary housing is provided with several annular oil grooves connected with the axial oil grooves. Each annular oil groove is provided with high-pressure rotating combination sealing rings on both sides. A friction ring is provided between the lower end face and the inner wall of the end cover, and two low-pressure O-rings are provided between the upper part of the rotary shaft and the upper part of the rotary housing.
As a key component for oil circulation in the excavator's upper and lower hydraulic systems, the central rotary joint is the hub that connects the hydraulic power source, control model and lower body actuators of the upper body of the excavator. It plays an important role in realizing the flexible rotary motion of the upper car. Crucial role. The central rotary joint is composed of an inner cylinder and an outer shell. The inner cylinder is cast with an annular groove oil passage. Each oil passage has an opening connected to the lower oil outlet. At the same time, the cylinder of the central rotary joint and the shell Each adjacent oil channel is sealed by a sealing rubber ring (oil seal) to ensure that the hydraulic oil of different circuits does not interfere with each other when the central rotary joint cylinder and the shell move relative to each other.
The four hydraulic oil pipes on the upper body that control left and right travel, the two hydraulic oil pipes that control high and low speeds, and the oil pipes for the bulldozer are all connected to the housing of the central rotary joint. The lower body hydraulic oil pipes that should be directly connected to these oil pipes are connected to the central cylinder of the central rotary joint. Since there are circles of annular grooved oil passages on the central rotary joint, the hydraulic circuit with the lower body of the excavator can be connected no matter how the upper body of the excavator rotates; and the rubber ring is sealed between the annular grooved oil passages ( Under the action of oil seal), the hydraulic oil in each circuit will not interfere with each other, which is equivalent to each hydraulic pipeline being directly connected.