Lifting arm

The technology of a boom and a boom is applied in the field of vehicle engineering, which can solve the problems of affecting the efficiency of construction, small expansion and contraction range, etc., and achieve the effect of reducing distance and strong telescopic ability under load.

Active Publication Date: 2013-09-18
河北雷萨重型工程机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of carrying capacity, the traditional boom has a small range of expansion and contraction during work, and even most traditional booms are

Method used

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elemen...

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Abstract

The invention discloses a lifting arm. The lifting arm comprises: a basic arm, wherein a first accommodation chamber is arranged in the basic arm; a first boom, wherein the first boom is arranged and capable of moving back and forth in the first accommodation chamber, a second accommodation chamber is arranged in the first boom, walls of the second accommodation chamber are provided with a plurality of installing holes, and each installing hole is rotatably provided with a first pulley; a second boom, wherein the second boom is arranged and capable of moving back and forth in the second accommodation chamber and is rotatably provided with second pulleys, and the second pulleys and the first pulleys are arranged at a preset interval along a direction from front to back; an actuator which is fixed on the basic arm and connected with the first boom to drive the first boom to move back and forth; and a steel wire rope, wherein a first end of the steel wire rope is fixed on the basic arm, and a second end of the steel wire rope winds around the first pulleys and the second pulleys and is then fixed on the basic arm to drive the second boom to move back and forth. According to embodiments provided by the invention, the lifting arm is telescoping under the condition of load and has strong load telescoping capability.

Description

technical field [0001] The present invention relates to vehicle engineering, in particular to a boom. Background technique [0002] Cranes are widely used in various fields in modern construction, and the boom plays a pivotal role as an important part of the crane. Due to the limitation of carrying capacity, the traditional booms have a small range of expansion and contraction during work, and even most traditional booms are forbidden to expand and contract under load, which brings a lot of inconvenience to the actual construction and seriously affects the efficiency of construction. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. [0004] For this reason, an object of the present invention is to propose a boom with strong telescoping capability under load. [0005] In order to achieve the above object, a boom is proposed according to an embodiment of the present invention, and the b...

Claims

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Application Information

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IPC IPC(8): B66C23/69
Inventor 金城
Owner 河北雷萨重型工程机械有限责任公司
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