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Bolt anti-rotation device and its standard joint installation structure, tower crane

An installation structure and anti-rotation technology, which is applied in the direction of cranes, connecting components, mechanical equipment, etc., can solve the problems of low work efficiency, small assembly space, and strong requirements for fixing and tightening, so as to reduce labor intensity and facilitate disassembly. The effect of pretending

Active Publication Date: 2017-01-18
ZOOMLION HEAVY IND CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0003] It can be seen from this that the defect of the prior art is: the disassembly process of the bolt pair 50' needs two people to cooperate at the same time, and the wrench 60' is easy to slip during the process of screwing the nut 54', and the bolt 51' is not easy to fix
The thinner weld 43' between the main chord 41' and the sleeve 42' makes it difficult to fix and tighten the wrench 60' when the assembly space is small, especially when the diameter of the bolt head 52' of the bolt 51' is large. It requires a lot of strength, and it is more inconvenient to disassemble and assemble, resulting in longer working hours and lower work efficiency

Method used

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  • Bolt anti-rotation device and its standard joint installation structure, tower crane
  • Bolt anti-rotation device and its standard joint installation structure, tower crane
  • Bolt anti-rotation device and its standard joint installation structure, tower crane

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] Such as Figure 3 to Figure 8 As shown, according to the embodiment of the present invention, a bolt anti-rotation device is provided. Preferably, the bolt anti-rotation device is applied in the installation process of the standard section 40 of the tower crane. There are multiple standard sections 40 of the tower crane, and the plurality of standard sections 40 are sequentially arranged and connected in the vertical direction to form the tower body, wherein each standard section 40 includes a main chord 41 and a sleeve 42, and the sleeve 42 is welded on On the main chord 41 , during installation, two adjacent standard sections 40 are fixedly connected by a bolt pair 50 , wherein the bo...

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PUM

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Abstract

The invention provides a bolt rotation prevention device, and a standard knot installation structure and a tower crane comprising the bolt rotation prevention device. The bolt rotation prevention device comprises a spacing head (10), wherein the spacing head (10) is provided with a bolt head positioning hole (11) used for containing and restricting the rotation amplitude of a bolt; the outer surrounding wall of the spacing head (10) is provided with a rotary spacing plane (12). According to the technical scheme of the invention, the bolt can be prevented from rotating in a nut screwing process, thereby being convenient for assembling and dissembling the nut and the bolt.

Description

technical field [0001] The invention relates to engineering machinery, in particular to a bolt anti-rotation device, a standard joint installation structure with the same, and a tower crane. Background technique [0002] The multiple standard sections of the tower crane are fixedly connected by bolt pairs, such as figure 1 and figure 2 As shown, a sleeve 42' is welded on the main chord 41' of each standard section 40'. When installing, the sleeve 42' between two adjacent standard sections 40' is coaxially arranged, and the two The sleeve 42' is fixedly connected by a bolt pair 50' composed of a bolt 51', a nut 54' and a washer 55'. Need two people to cooperate in the loading and unloading process of bolt pair 50 ', and one of them blocks the bolt head 52 ' of bolt 51 ' with wrench 60 ', and another people screw nut 54 ' with other wrench 60 '. [0003] As can be seen from this, the defective of prior art is: the dismounting process of bolt pair 50 ' needs two people to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B43/00B66C23/62
CPCB66C23/62F16B43/00
Inventor 张文李婉
Owner ZOOMLION HEAVY IND CO LTD
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