Standard knot of tower crane

A technology for standard sections and tower cranes, applied in the direction of cranes, etc., can solve the problems of large force on the web, weak stability of the main chord, weak stability under compression, etc., so as to reduce the frequency of weld cracking and reduce the number of connection nodes. The effect of improving the overall safety performance

Inactive Publication Date: 2015-01-28
XUZHOU CONSTR MACHINERY
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  • Abstract
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Problems solved by technology

[0005] ①Because the distance between the welding nodes of the diagonal web is long, the force on the diagonal web is relatively large, and thus the compression stability is weak;
[0006] ② Due to the relatively long distance between the main chord and the connecting node of the web, the stability of the main chord is weak;
[0007] ③Because the web rod bears a large force, it is easy to cause the weld seam of the web rod to crack during repeated use, which affects the use

Method used

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  • Standard knot of tower crane
  • Standard knot of tower crane

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing.

[0022] Such as figure 2 As shown, the standard section of the tower crane includes a main chord 3, and the main chord 3 is docked with four transverse webs 1, and the transverse webs 1 are uniformly fixed on the main chord 3 to form a closed frame respectively. One end of the diagonal web bar 2 in each frame is overlapped on the central position of the transverse web bar 1, and the other end of the diagonal web bar 2 is correspondingly overlapped at the junction of the transverse web bar 1 and the main chord bar 3, in each frame The two diagonal rods fixed inside are in the shape of a figure-eight. Wherein, the top end of the figure-eight diagonal bar 2 is welded to the transverse web bar 1 through the gusset plate 4 .

[0023] From figure 2 It can be seen that the tower crane standard section of the present invention optimizes the positions of the diagonal web bar 2 a...

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Abstract

The invention discloses a standard knot of a tower crane. The standard knot comprises a main chord (3), wherein the main chord (3) is in butt joint with at least four cross web members (1), the cross web members (1) are uniformly fixed on the main chord (3) to respectively form a closed frame, one end of a diagonal web member (2) in each frame is in lap-joint on the center of the cross web member (1), the other end of the diagonal web member (2) is in lap-joint to a joint of the cross web member (1) and the main chord (3) correspondingly, and two diagonal web members (2) are fixed to be splayed in each frame. Compared with the prior art, the standard knot of the tower crane, disclosed by the invention, has the advantages that a connecting form of the diagonal web member and the cross web members in the standard knot is optimized, the distance between connecting knots is greatly reduced, the stability of the standard knot is improved, and the integral performance of the tower crane is improved.

Description

technical field [0001] The invention specifically relates to a standard section of a tower crane, which belongs to the technical field of tower crane machinery. Background technique [0002] The standard section of tower crane plays an important role in mechanical equipment such as cranes, tower cranes, and elevators. A good standard section can not only improve the stability of these cranes, but also improve the safety performance of the whole machine. [0003] At present, the standard section form of the tower crane is relatively simple, and the web members are mostly simple transverse web members, diagonal web members and other structural forms. The distance between the connecting nodes of the web members is relatively long, and the distance between the upper main chord and the connecting nodes of the web members is also relatively long. Therefore, the compression stability of the standard section itself and the torsional capacity of the web members are relatively weak, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/62
CPCB66C23/62
Inventor 王建军米成宏吴海波李玉杰
Owner XUZHOU CONSTR MACHINERY
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