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A crane chassis

A technology of cranes and underframes, applied in the field of cranes, which can solve the problems of high cost and unsuitable for long-term use of truck cranes, and achieve the effects of compact structure, low requirements for construction sites, and flexible operation

Inactive Publication Date: 2017-01-18
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is considered to use a truck crane to complete the unloading and laying of prefabricated blocks, the truck crane has a high degree of freedom, flexible operation, and fast hoisting speed, but its requirements on the construction site are also very strict. In addition, the truck crane is expensive and generally not suitable for long-term use

Method used

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  • A crane chassis
  • A crane chassis
  • A crane chassis

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Embodiment Construction

[0017] like figure 1 As shown, the crane underframe of the present invention includes a turntable 1, a base 2, a slewing bearing 5 installed between the turntable 1 and the base 2, a support leg 3 fixed on the base 2, and a support leg installed at the end of the support leg 3. The walking wheel 4 and the slewing bearing 5 have an inner ring and a toothed outer ring. The slewing table 1 can rotate freely around the slewing bearing 5 relative to the base 2. The chassis can move with the help of the supporting legs 3 and the walking wheels 4 to realize the change of the position of the lifting weight. .

[0018] like figure 2 , image 3 As shown, the rotary locking mechanism 6 on the chassis is made up of a U-shaped fork 61, a driving lever 62, a locking handle 67 and a limit block 63. The U-shaped fork 61 is fixedly connected to one end of the driving lever 62, and the driving lever 62 The other end is connected with the locking handle 67 by a rotating pair, the driving rod...

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Abstract

The invention discloses a crane underframe which comprises a revolving platform, a base, a revolving support which is arranged between the revolving platform and the base, supporting legs which are fixed on the base, and traveling wheels which are arranged on the end parts of the supporting legs, wherein the outer ring of the revolving support is provided with teeth; a revolving locking mechanism of the underframe comprises a U-shaped fork, a pull rod, a locking handle and a limiting blocking block; the revolving locking mechanism and the revolving platform can form a four-rod mechanism comprising a moving pair; the limiting blocking block is provided with ratchets; the locking handle is internally provided with a pressing rod, and pawls matched with the ratchets; each supporting leg is composed of a crossed beam and a stretching leg which are made from rectangular-section-type square pipes; the crossed beams are fixedly connected with the base; the stretching legs are connected with the crossed beams in an inserting manner and then are fixed by tightening bolts. The crane underframe is simple in structure, safe, reliable, high in environment adaptability and convenient to dismount, mount and transport.

Description

technical field [0001] The invention belongs to the technical field of cranes, in particular to a crane underframe. Background technique [0002] Lifting operations are very common in building construction. In order to achieve green construction, prefabricated concrete blocks of certain specifications are often used for temporary roads and site paving on construction sites. Lifting equipment is also required for unloading and laying of the prefabricated blocks. Commonly used tower cranes or mast cranes, etc. These lifting equipment have high efficiency in repeated operations, but in order to ensure the safe operation of such equipment, their bases need a large area for easy construction and reliability, and the terrain requirements of the construction site It is also relatively strict. In addition, the operating location is often relatively fixed. Generally, it is aimed at long-term lifting operations and large-scale lifting of heavy objects. Obviously, the lifting of concre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/94B66C23/84B66C23/78
CPCB66C23/78B66C23/84B66C23/94B66C2700/00
Inventor 张明勤马荣全原政军苗冬梅姚玉善孟宪举王晴靳斐金钢韩立芳
Owner SHANDONG JIANZHU UNIV
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