All-terrain crane suspension arm and use method

Abstract

The invention belongs to the technical field of cranes and particularly relates to an all-terrain crane suspension arm and a use method. The all-terrain crane suspension arm comprises a bottom plate.A main arm is installed on the bottom plate. An auxiliary arm is installed on an arm head of the main arm. A supporting rod and a second supporting rod are hinged to the auxiliary arm. The supportingrod is hinged to the corner position of the auxiliary arm. A Y-shaped or n-shaped arm rest type super-lift device is arranged on the main arm. Super-lift steel wire ropes are arranged at the two endsof the super-lift device. The other ends of the super-lift steel wire ropes are connected with a second transition plate hinged to the second supporting rod. A pull rope is connected between the otherend of the second transition plate and a transition plate hinged to the supporting rod. The transition plate is connected with the pull rope through a connecting frame, and a tension sensor is arranged in the connecting frame. A pull plate is connected to the end, away from the pull rope, of the transition plate, an arm head pull rope is connected to the end, away from the transition plate, of the pull plate, and the other end of the arm head pull rope is connected with an arm head of the auxiliary arm. By means of the all-terrain crane suspension arm and the use method, a novel auxiliary armassembly is adopted, with the combination of use of the super-lift device, the deflection of the auxiliary arm is reduced under the tensile force of the super-lift steel wire ropes, and the lifting performance of the whole machine is improved.

Description

technical field [0001] The invention belongs to the technical field of cranes, and in particular relates to an all-terrain crane arm and a use method thereof. Background technique [0002] The boom is an important part of the all-terrain crane. The traditional crane boom often has the following two problems when it is hoisted for wind power: the height or width is not enough, and the hoisting object will interfere with the head of the last boom. If it is solved by increasing the length of the main boom of the crane, it will lead to an increase in the weight of the whole vehicle, an increase in the number of axles, and finally a sharp increase in the cost of the whole vehicle. It affects the installation and disassembly of wind power, thus restricting the development of wind power installation industry. [0003] With the development of cranes, when installing wind turbines in the market, a common way is to use fixed jib conditions or wind power special jib conditions. If th...

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Problems solved by technology

[0002] The boom is an important part of the all-terrain crane. The traditional crane boom often has the following two problems when hoisting wind power: the height or width is not enough, and the hoisting object will interfere with the head of the last boom

If the working condition of the fixed jib is used, when installing the jib, it is often necessary to install more parts on the main arm, which is time-consuming and laborious to install and disassemble; more parts are added to the main arm, resulting in heavier weight, which affects the stability of the long arm The impact is relatively large, so the hoisting capacity of the whole machine has decreased

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