High-sealing excavator cylinder
An excavator, high-sealing technology, applied in the direction of fluid pressure actuating devices, etc., can solve the problems of poor sealing, can not work normally, hydraulic cylinder pressure drop, etc., to achieve good sealing performance, long service life, easy to use and operate.
Inactive Publication Date: 2012-08-01
常州市顺景油缸有限公司
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Problems solved by technology
However, the overall sealing performance of this scheme is poor, and it cannot fundamentally overcome the defect of oil leakage caused by long-term use of the oil cylinder. The hydraulic cylinder often fails to work normally due to pressure drop caused by oil leakage.
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as Figure 1-2 As shown, the high-seal excavator oil cylinder includes a cylinder body 1, a first oil hole 2 and a second oil hole 3 are respectively opened on the side of the cylinder body 1, a piston chamber 4 is provided in the cylinder body 1, and the first oil hole 3 is provided in the cylinder body 1. The hole 2 and the second oil hole 3 communicate with the piston cavity 4 respectively, and a piston rod 5 and a piston 6 are arranged in the piston cavity 4. One end of the piston rod 5 is connected with the piston 6, and the other end passes through the cylinder body 1 and The support sleeve 7 connected with the cylinder 1 extends to the outside of the piston chamber 4, and the first oil pipe 8 and the second oil pipe 9 are respectively connected to the first oil hole 2 and the second oil hole 3, and the first oil pip...
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The invention belongs to the technical field of mechanical equipment, and relates to a cylinder, in particular to a high-sealing excavator cylinder. The high-sealing excavator cylinder solves the technical problems that the conventional cylinder has poor sealing property, the pressure often declines due to oil leakage and the like. The high-sealing excavator cylinder comprises a cylinder body; the lateral surfaces of the cylinder body are provided with a first oil hole and a second oil hole; a piston cavity is formed in the cylinder body; a piston rod and a piston are arranged in the piston cavity; one end of the piston rod is connected with the piston, and the other end of the piston rod penetrates through a supporting sleeve and then extends out of the piston cavity, wherein the supporting sleeve is arranged in the cylinder body and connected with the cylinder body; a first oil pipe and a second oil pipe are respectively connected to the first oil hole and the second oil hole; both the first oil pipe and the second oil pipe are communicated with the piston cavity; an abrasion-resistant device is arranged at the joint of the piston and the cylinder body; a sealing device is arranged at the joint of the supporting sleeve and the cylinder body; and a holding device is arranged at the joint of the supporting sleeve and the piston rod. The cylinder has the advantages of reasonable design, simple structure, good sealing performance and long service life.
Description
technical field [0001] The invention belongs to the technical field of mechanical equipment, and relates to an oil cylinder, in particular to a highly sealed excavator oil cylinder. Background technique [0002] With the development of engineering construction, excavators have been used more and more widely. The earliest excavator was a steam-driven bucket rotary excavator. After the development of electric drive and internal combustion engine driven rotary excavator, most of the existing excavators are fully automatic hydraulic excavators using electromechanical hydraulic integration technology. At present, hydraulic cylinders used for excavators are mainly composed of a cylinder body, a piston, a piston rod, a guide sleeve, and a hydraulic oil pipe. The guide sleeve is arranged at one end of the piston cavity, and a sealing ring is arranged inside the guide sleeve. The oil cylinder of this structure, because the sealing ring is eroded by the hydraulic oil for a long time ...
Claims
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IPC IPC(8): F15B15/14F15B15/20
Inventor 俞荣华李长浩
Owner 常州市顺景油缸有限公司