The invention discloses a single-cylinder bolt type telescopic arm and a crane. A basic arm and a middle arm of the single-cylinder bolt type telescopic arm comprise a first arm pin hole, a second armpin hole and a third arm pin hole which are successively arranged at intervals along a direction from a tail part to a head part, and the middle arm and a tail section arm comprise a cylinder pin hole arranged at the tail part and a telescopic arm pin. Two cylinder heads and cylinder pins arranged on the cylinder heads are arranged on a cylinder barrel of a telescopic oil cylinder. In a full-contraction state, positions of the third arm pin holes of the basic arm and the middle arm do not exceed the position of the third arm pin hole of the middle arm adjacent to the tail section arm along the direction from the tail part to the head part. A distance between the cylinder pin hole of the middle arm adjacent to the basic arm and the second arm pin hole of the middle arm adjacent to the tailsection arm is L1. The distance between the second arm pin hole and the third arm pin hole of the middle arm adjacent to the tail section arm is L2, and the distance between the cylinder pin hole ofthe middle arm adjacent to the basic arm in an axial direction and the second arm pin hole of any one of the basic arm and the middle arm is between L1 and L2.
本发明公开一种单缸插销式伸缩臂和起重机,单缸插销式伸缩臂的基本臂和中间臂各自包括沿尾部到头部方向依次间隔设置的第一臂销孔、第二臂销孔和第三臂销孔,中间臂和末节臂各自包括设于尾部的缸销孔和可伸缩的臂销;伸缩油缸的缸筒上设有两个缸头和设于缸头上的缸销;在全缩状态下,基本臂和中间臂的第三臂销孔的位置沿尾部到头部方向均不超过与末节臂相邻的中间臂的第三臂销孔的位置;与基本臂相邻的中间臂的缸销孔和与末节臂相邻的中间臂的第二臂销孔之间的距离为L1,与末节臂相邻的中间臂的第二臂销孔和第三臂销孔之间的距离为L2,沿轴向与基本臂相邻的中间臂的缸销孔和基本臂与中间臂中任意一个的第二臂销孔之间的距离处于L1和L2之间。
Single-cylinder bolt type telescopic arm and crane
单缸插销式伸缩臂和起重机
2020-04-21
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
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