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Main chord and its standard section, tower crane

A technology of main chords and standard joints, which is applied to cranes and other directions, can solve problems affecting welding quality, high welding process requirements, uneven heat distribution, etc., to improve welding quality, reduce thickness difference, and reduce welding process requirements Effect

Active Publication Date: 2015-09-16
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In fact, the thickness of the side wall of the main chord body 10' of each standard section is very different from the thickness of the side wall of the connecting sleeve 22'. Generally, the thickness of the side wall of the connecting sleeve 22' is the same as that of the side wall of the main chord body 10'. 3 to 4 times the thickness, when welding, once the welding current is large, it is easy to damage the main chord body 10', and if the welding current is small, it is not easy to penetrate the connecting sleeve 22', so the main chord body 10' The welding process requirements between the connection sleeve 22' are relatively high; in addition, the side wall thickness of the main chord body 10' and the connection sleeve 22' have a large difference in thickness, which will lead to uneven heat distribution between the two during welding , so that the deformation of the main chord body 10' and the connecting sleeve 22' are inconsistent, which affects the welding quality and reduces the safety factor of the tower crane

Method used

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  • Main chord and its standard section, tower crane
  • Main chord and its standard section, tower crane
  • Main chord and its standard section, tower crane

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Embodiment Construction

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

[0027] like Figure 3 to Figure 6 As shown, according to the embodiment of the present invention, a main chord is provided. Preferably, the main chord is applied to a standard section of a tower crane. The main chord includes a main chord body 10 and a connecting structure 20, wherein the connecting structure 20 includes a connecting plate 21 and a connecting sleeve 22, the connecting plate 21 is welded and fixed on the main chord body 10, and the connecting sleeve 22 is welded and fixed on the connecting plate 21 Above, the connecting sleeve 22 is used as the main connection basis for the connection of two adjacent main chord bodies 10, the thickness of the connecting...

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Abstract

The invention provides a main chord member, a tower crane and a standard knot having the main chord member. The main chord member comprises a main chord member body (10) and a connecting structure (20) arranged on the main chord member body (10), wherein the connecting structure (20) comprises a connecting sleeve (22) and a connecting plate (21), the connecting plate (21) is arranged on the main chord member body (10), the connecting sleeve (22) is fixedly arranged on the connecting plate (21), and the thickness of the connecting plate (21) is larger than that of the side wall of the main chord member body (10) and is smaller than the that of the side wall of the connecting sleeve (22). According to the technical scheme disclosed by the invention, the welding difficulty of the main chord member can be reduced, and the welding quality of the main chord member can be improved.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a main chord and a standard section and a tower crane with the same. Background technique [0002] The standard section is used to assemble the tower body of the tower crane. The standard section includes multiple main chords, such as figure 1 and figure 2 As shown, it is a partial schematic diagram of one of the main chords. The main chord includes the main chord body 10' and two connecting sleeves 22' fixed on the main chord body 10'. The connecting sleeves 22' and the main chord body 10' between welding fixed. When two standard sections are connected, align the connecting sleeves 22' of the two standard sections one by one, and then pass through the bolts. It can be said that the welding quality between the connection sleeve 22' and the main chord body 10' has a great influence on the connection quality between the standard sections. [0003] In fact, the thickness o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/62
Inventor 钱建军
Owner ZOOMLION HEAVY IND CO LTD
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