Tower crane

A technology of tower cranes and jibs, which is applied to cranes and other directions, and can solve problems such as boom bending, limited ability to withstand wind loads, and increased vehicle weight

Active Publication Date: 2012-03-21
ZOOMLION HEAVY IND CO LTD
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The jibs of existing tower cranes rely on the stiffness of the jib itself to resist wind loads, and this design has very limited ability to withstand wind loads
Especially for super-long arms, once a sudden strong gust of wind acts on the boom, the stiffness of the boom is often not enough to withstand the wind load, causing the boom to bend to a certain extent. The boom is suspended with heavy objects, and the gravity of the heavy objects will cause the boom to bend twice, thus causing the boom to roll
If the stiffness of the boom is increased by means of the size of the boom itself, it will not only increase the weight of the boom, but also increase the weight of other parts such as the tower body and the lower vehicle to increase the load-carrying capacity, resulting in an increase in the weight of the whole vehicle , but also increase the cost of manufacturing, transportation, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tower crane
  • Tower crane
  • Tower crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0025] Such as Figure 1 to Figure 2 As shown, a tower crane is provided according to an embodiment of the present invention, the tower crane includes a slewing platform 1 and a jib 2 and a balance jib 3 fixed on the slewing platform 1, the jib 2 and the balance arm 3 extend in opposite directions from the slewing platform 1 approximately along the first axis X, wherein the tower crane also includes two supports 4 and at least four stay cables 5, the two supports 4 is rotatably around the revolving platform 1 (preferably rotatably around the revolving axis of the revolving platform 1) hinged on the revolving platform 1, and generally along the second axis Y int...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a tower crane which comprises a slewing platform (1), as well as a lifting arm(2) and a balancing arm (3) which are fixed on the slewing platform (1); the lifting arm (2) and the balancing arm (3) respectively extend in the opposite directions from the slewing platform (1) along a first axis (X) approximately; the tower crane further comprises two support parts (4) and at least four guy cables (5); the two support parts (4) are rotationally hinged on the slewing platform (1) around the slewing platform (1), and respectively extend in the opposite directions from the slewing platform (1) along a second axle (Y) crossing the first axie (X) approximately; and each support part (4) is respectively connected with the lifting arm (2) and the balancing arm (3) through thetwo guy cables (5). The side-tipping prevention capability can be enhanced without increasing the self stiffness of the lifting arm.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a tower crane. Background technique [0002] The tower crane includes a slewing platform and a lifting arm and a balance arm fixed on the slewing platform, and the lifting arm and the balancing arm extend from the slewing platform to opposite directions approximately along the same axis. Because tower cranes usually work in open places such as construction sites, tower cranes usually need to consider the influence of wind loads, especially on the boom. The jibs of the existing tower cranes all rely on the stiffness of the jib itself to withstand wind loads, and this design has a very limited ability to withstand wind loads. Especially for super-long arms, once a sudden strong gust of wind acts on the boom, the stiffness of the boom is often not enough to withstand the wind load, causing the boom to bend to a certain extent. The boom is suspended with heavy objects, and the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/72B66C23/88
CPCB66C23/825
Inventor 曾光阳鹏阳云华朱俊辉王曦鸣
Owner ZOOMLION HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap