A double oil cylinder jacking mechanism for a tower crane body

The technology of a jacking mechanism and double oil cylinders is applied in cranes and other directions, which can solve the problems of tower crane instability, falling tower, large force and easy deformation.

Active Publication Date: 2017-03-01
谢国贤
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional tower crane, the jacking cylinder is installed on the beam behind the jacket frame, and the lower end of the piston rod is equipped with a jacking pole beam, through which the pressure is transmitted to the steps (also called steps) outside the tower body to realize jacking. However, the tower crane with this structure has the following disadvantages during the jacking operation: 1. During the jacking operation, the center of gravity of the jacking is at the position of the jacking cylinder on the jacket frame, because the jacking cylinder is installed on the jacket frame If there is a strong wind or the boom of the tower crane is artificially rotated during the jacking process, the force of the center of gravity of the jacking will change, resulting in the accident of the tower crane being unstable and falling down.
2. The design of the oil cylinder makes the gravity of the whole tower crane concentrated, and the force on each stressed part is too large, which is easy to deform and cause safety accidents

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
  • A double oil cylinder jacking mechanism for a tower crane body
  • A double oil cylinder jacking mechanism for a tower crane body
  • A double oil cylinder jacking mechanism for a tower crane body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: see attached figure 1 to attach Figure 6 As shown, the tower crane tower body double cylinder jacking mechanism described in this embodiment includes a jacking outer frame 1 and a standard section 2, and a guide mechanism 3 is provided between the jacking outer frame 1 and the standard section 2, Jacking oil cylinders 5 are fixedly installed on two opposite sides of the jacking jacket frame 1, and the cylinder blocks of the two jacking oil cylinders 5 are fixed to the side beams of the jacking jacket frame 1, and the protruding ends of the pistons face downward, Lifting support device 7 is fixedly connected on the piston rod of lifting oil cylinder 5, and this lifting support device 7 is to be fixedly connected by pin by two U-shaped frames, constitutes frame-shaped connection support, and is installed below the opposite two sides of support. The connecting crawling claw 13 that swings up and down, the connecting crawling claw 13 can swing upwards to the...

Embodiment 2

[0022] Embodiment 2: see attached Figure 7 to attach Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that the jacking support device 7 is provided with a rotating claw 12 that can rotate in the horizontal direction, which can rotate in the horizontal direction, and the rotating claw 12 can rotate to the original standard. Above the crossbeam of section 2 and form a support with the horizontal beam, when the jacking operation is to be carried out, the rotating claw 12 is rotated 90 degrees in the direction of the tower, so that the rotating claw 12 is offset against the horizontal beam of the original standard section 2 , during the jacking process, the pressure is transmitted to the horizontal beam of the original standard section 2 through the rotating claw 12 to realize the jacking operation; Climbing claw 12 breaks away from the horizontal crossbeam of original standard section 2, can flexibly switch the working state of jacking up and not j...

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 provides a double-cylinder jacking mechanism of a tower body of a tower crane. The double-cylinder jacking mechanism comprises a jacking jacket frame and a standard section, wherein a guiding mechanism is arranged between the jacking jacket frame and the standard section. The double-cylinder jacking mechanism is characterized in that the two opposite sides of the jacking jacket frame are respectively and fixedly connected with a jacking cylinder; cylinder bodies of the two jacking cylinders are fixed with side cross beams of the jacking jacket frame, and the extending ends of piston rods are downward; jacking and supporting devices are fixed on the tail ends of the piston rods in the jacking cylinders; when the jacking action is carried out, the jacking and supporting devices can form the support with a horizontal cross beam of the standard section, the piston rods of the jacking cylinders move downwards, and pressure is transferred to the horizontal cross beam of the standard section by the jacking and supporting devices, so that the jacking jacket frame fixedly connected with the cylinder bodies of the jacking cylinders climbs upwards. The double-cylinder jacking mechanism provided by the invention has the largest advantages that by simultaneous jacking of the double cylinders, the 360-degree rotation of a lifting arm in climbing or falling is guaranteed, the center of jacking gravity is averagely dispersed, and the condition of side-local instability even toppling can be avoided.

Description

technical field [0001] The invention relates to the technical field of tower cranes, in particular to a tower crane body double cylinder jacking mechanism. Background technique [0002] With the continuous progress of society, large-scale real estate is constantly being built, and the tower crane industry is also booming. In the traditional tower crane, the jacking cylinder is installed on the beam behind the jacket frame, and the lower end of the piston rod is equipped with a jacking pole beam, through which the pressure is transmitted to the steps (also called steps) outside the tower body to realize jacking. However, the tower crane with this structure has the following disadvantages during the jacking operation: 1. During the jacking operation, the center of gravity of the jacking is at the position of the jacking cylinder on the jacket frame, because the jacking cylinder is installed on the jacket frame Later, if there is a strong wind during the jacking process or 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 Patents(China)
IPC IPC(8): B66C23/62
Inventor 谢国贤
Owner 谢国贤
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