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Auxiliary boom, boom structure and crane

A technology of cranes and jibs, applied in the field of construction machinery, can solve problems such as troublesome production and complex structure of rollers, and achieve the effects of simple production, saving large bow beams, and simple structure

Pending Publication Date: 2021-02-12
SANY AUTOMOBILE HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects in the prior art, the application provides a jib frame, a jib structure and a crane to solve the technical problems of complex structure and troublesome manufacture of the roller structure in the prior art

Method used

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  • Auxiliary boom, boom structure and crane
  • Auxiliary boom, boom structure and crane
  • Auxiliary boom, boom structure and crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] see figure 1 and figure 2 , a jib frame 200 provided in this embodiment is applied to the jib structure of a crane. The jib frame 200 is arranged on one side of the main jib frame 100 in the jib structure. Expand and collapse.

[0045] The jib frame 200 provided in the embodiment includes a truss body 210 and two roller assemblies 220, wherein the truss body 210 includes a main chord 212, the truss body 210 is prismatic, and the main chords 212 are respectively arranged on the truss body 210 along the length On the ridgeline in the direction, the main chords 212 are connected by a predetermined number of supporting chords 213 .

[0046] The two roller assemblies 220 are respectively arranged on the main chord 212 on both sides of the truss body 210 , that is to say, one roller assembly 220 is arranged on the main chord 212 on both sides of the truss body 210 .

[0047]Wherein, the side of the main boom 100 corresponding to the side where the sub-jib 200 is disposed ...

Embodiment 2

[0051] see figure 1 and figure 2 , a jib frame 200 provided in this embodiment is applied to the jib structure of a crane. The jib frame 200 is arranged on one side of the main jib frame 100 in the jib structure. Expand and collapse. This embodiment is an improvement made on the basis of the above-mentioned embodiment 1. Compared with the above-mentioned embodiment 1, the difference lies in:

[0052] Please refer to figure 2 and image 3 , in the two roller assemblies 220, at least one roller assembly 220 is adjustably arranged on the main string pipe 212, that is to say, one of the two roller assemblies 220 is adjustably connected with the main string pipe 212, and the other The roller assembly 220 is fixedly connected to the main string pipe 212 ; alternatively, both roller assemblies 220 are adjustablely connected to the corresponding main string pipe 212 .

[0053] In this embodiment, one roller assembly 220 is adjustably connected to the main string pipe 212 , and ...

Embodiment 3

[0069] see figure 1 and figure 2 , a jib frame 200 provided in this embodiment is applied to the jib structure of a crane. The jib frame 200 is arranged on one side of the main jib frame 100 in the jib structure. Expand and collapse. This embodiment is an improvement made on the basis of the above-mentioned embodiment 2. Compared with the above-mentioned embodiment 2, the main difference is:

[0070] Please refer to Figure 5 , in this embodiment, the mounting frame 2212 has an inverted L-shaped structure, that is to say, the mounting frame 2212 is bent into an inverted L-shaped structure by a steel plate. One side of the first wheel frame 2210 is in surface contact with the mounting frame 2212, and the rotation of the first wheel frame 2210 in the circumferential direction is limited by surface contact. Thus, the structure of the limiting rod in the second embodiment is omitted, and the structure is more Simple, the limit effect is better.

[0071] It can also be unders...

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PUM

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Abstract

The invention provides an auxiliary boom, a boom structure and a crane, and relates to the technical field of engineering machinery. The auxiliary boom comprises a truss body and two roller assemblies; the truss body comprises main chord pipes; the two roller assemblies are arranged on the main chord pipes on the two sides of the truss body respectively; and wherein the two roller assemblies are used for being in rolling fit with a bracket mechanism of the boom structure. According to the auxiliary boom provided by the invention, the two roller assemblies are directly installed on the main chord pipes on the two sides of the truss body, a large arch-shaped beam does not need to be arranged between the main chord pipes on the two sides of the truss body, and therefore the large arch-shapedbeam in the prior art is omitted, and a roller mechanism is simpler in structure, easier to manufacture and lower in cost.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a jib frame, a boom structure and a crane. Background technique [0002] At present, the auxiliary arm of the truck crane is arranged on one side of the main arm, and the auxiliary arm is connected with the main arm through a bracket and a plurality of latches. Wherein, in order to facilitate the expansion and retraction of the auxiliary arm, a roller structure is provided on the auxiliary arm. [0003] In the prior art, the roller structure includes a large arched beam fixed on the main chord on both sides of the auxiliary arm and a pair of rollers arranged on the arched beam. In actual manufacturing, in order to meet the requirement that the large arched beam can be equipped with rollers and bear the weight from the jib, the large arched beam has a large size and needs to be designed with sufficient thickness and a specific arched structure to increase the struct...

Claims

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Application Information

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IPC IPC(8): B66C23/64B66C23/66
CPCB66C23/64B66C23/66
Inventor 周斌向宇光郭永红
Owner SANY AUTOMOBILE HOISTING MACHINERY