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Lifting device and rotary drilling rig

A technology of rotary drilling rig and pulley, which is applied to portable lifting devices, rotary drilling rigs, hoisting devices, etc., can solve problems such as the inability to achieve a 3-fold increase of wire ropes.

Pending Publication Date: 2020-08-04
BEIJING SANY INTELLIGENT MFG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a lifting device and a rotary drilling rig to solve the technical problem in the prior art that the rotary drilling rig cannot realize the 3-fold lifting of the wire rope

Method used

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  • Lifting device and rotary drilling rig
  • Lifting device and rotary drilling rig
  • Lifting device and rotary drilling rig

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without cre...

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Abstract

The invention discloses a lifting device and a rotary drilling rig, and relates to the technical field of engineering machinery. The lifting device is arranged on the rotary drilling rig and comprisesa pulley assembly, a winch and a steel wire rope extending out of the winch, wherein the pulley assembly comprises a movable pulley, a large pulley and a fixed pulley, the large pulley and the fixedpulley are arranged on a mast of the rotary drilling rig correspondingly, the fixed pulley is located between the large pulley and the movable pulley, the steel wire rope sequentially bypasses the large pulley, the movable pulley and the fixed pulley and then is connected with a power head, the movable pulley is used for being connected with the power head of the rotary drilling rig, the power head is driven to move through the steel wire rope, three force application points are formed between the steel wire rope and the power head in total, and the three sections of the steel wire rope applytension to the power head at the three force application points correspondingly, so that the lifting force of the steel wire rope is increased to three multiples, the technical problem that a rotary drilling rig with the lifting force of the steel wire rope increased to three multiples does not exist in the prior art is solved, and meanwhile, the lifting mechanism can reduce the requirement for the tensile strength of a single steel wire rope on the premise of ensuring the tension of the steel wire rope.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a lifting device and a rotary drilling rig. Background technique [0002] Rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation engineering. It is mainly suitable for construction in soil layers such as sandy soil, cohesive soil, and silty soil. been widely used in. [0003] Wire rope is an important consumable material during the use of rotary drilling rig equipment, and it is also an important part of ensuring the safe production of rotary drilling rig equipment. At present, the lifting force of the common rotary drilling rig wire rope is 1 times or 4 times, but not including 3 times. However, in the actual application process, a rotary drilling rig with a wire rope lifting force of 3 times is still required. Contents of the invention [0004] The object of the present invention is to provide a lifting devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/28B66D3/08E21B3/02
CPCB66D1/28B66D3/08E21B3/02
Inventor 王镇彭楠王龙刚
Owner BEIJING SANY INTELLIGENT MFG TECH CO LTD
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