A crane telescopic device

Abstract

The invention discloses a crane telescopic device, which relates to the field of cranes. The crane telescopic device includes a fixed arm, a telescopic arm and a mounting base. The top of the fixed arm is fixedly connected with a mounting platform, the mounting base is fixedly mounted on the mounting platform, the side wall of the mounting base is fixed with a support bar, and one end of the support bar is fixed with a guide rail. The first rotating shaft is connected between the two groups of guide rails. The middle part of the first rotating shaft is fixed against the roller, and the driving wheel is also fixed on the first rotating shaft. The rotating shaft is fixed with a driven wheel, the driving wheel and the driven wheel are sleeved with a belt, the second rotating shaft is fixed with a control roller, a projection is arranged on the control roller, a counter is connected with the mounting seat, and a button is arranged on the counter. The telescopic device of the crane realizes the convenience for the user to calculate the length of the telescopic arm, so that it is convenient to know whether the working state of the telescopic arm is within a normal range and meet the needs of the user.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a crane telescopic device. Background technique [0002] A crane refers to a multi-action hoisting machine that lifts vertically and transports heavy objects horizontally within a certain range. Cranes are very common in life and can play a huge role at critical times. [0003] Cranes generally consist of a telescopic device, which includes a fixed arm and a telescopic arm. The telescopic arm is generally slidably connected to the axis of the fixed arm, and is extended and shortened by hydraulic pressure. In the prior art, the longest elongation of the telescopic arm is When it is too short, it needs to be detected. The maximum elongation can reflect the working state of the telescopic device to a certain extent. The existing telescopic devices are not convenient to measure the arm length. Generally, when the telescopic arm is long, the It is very inconvenient to measure the leng...

AI Technical Summary

Problems solved by technology

[0003] Cranes generally consist of a telescopic device, which includes a fixed arm and a telescopic arm. The telescopic arm is generally slidably connected to the axis of the fixed arm, and is extended and shortened by hydraulic pressure. In the prior art, the longest elongation of the telescopic arm is When it is too short, it needs to be detected. The maximum elongation can reflect the working state of the telescopic device to a certain extent. The existing telescopic devices are not convenient to measure the arm length. Generally, when the telescopic arm is long, the It is very inconvenient to measure the length of the arm. Aiming at the deficiencies of the prior art, the present invention discloses a crane telescopic device to solve the above problems

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