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Telescopic boom mounting structure

A technology for installing structures and telescopic arms, which can be used in cranes and other directions, and can solve problems such as the inability to use rotating columns

Active Publication Date: 2018-01-26
TADANO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that it is not possible to use the existing rotating strut or the existing shaft member used as the pitch center of the telescopic arm.

Method used

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  • Telescopic boom mounting structure
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  • Telescopic boom mounting structure

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0024] figure 1 A truck crane (crane) 10 is shown as a working machine to which a telescopic boom mounting structure is applied.

[0025] The truck crane 10 has a main frame 14, a rotating strut 20, a telescopic arm 200, a pitching cylinder 15, a pair of outrigger devices 30 (only one is shown), a cab 16, a loading platform 17, etc., wherein the main frame 14 is Extending in the front-rear direction, the front wheel 11 and the first and second rear wheels 12, 13 are provided; the rotating strut 20 is provided on the main frame 14 in a rotatable manner; The upper part of the pillar 20; the pitching cylinder 15 makes the telescopic arm 200 pitch; a pair of outrigger devices 30 are arranged on both sides of the main frame 14 near the position of the rotating pillar (position relative to the front-rear direction); the cab 16 is in the The main frame 14 is arranged on the front side of the rotating pillar 20 ; the loading platform 17 is arranged on the rear side of the rotating pi...

no. 2 Embodiment

[0049] Figure 4 The attachment structure of the telescopic arm of the second embodiment is shown. Figure 4 The illustrated bracket 400 is set such that a predetermined area (third predetermined area) 401 is an area spanning from the base piece 312 to the protruding piece 313, wherein the predetermined area (third predetermined area) 401 includes the axis of the base piece 312. part 314 and the shaft part 316 of the protruding piece 313. The width between the predetermined regions 401 and 401 is set to W1 as in the first embodiment, and the width of other parts is set to W2, and W2 is set to be larger than W1. Moreover, the front edge part 401K which is the boundary of each predetermined area|region 401 inclines in the same direction as 1st Example, ie, from the rear side to the front side toward the front end side of a telescopic arm.

[0050] According to the attachment structure of the telescopic arm of the second embodiment, an existing shaft member can be used as the s...

no. 3 Embodiment

[0053] Figure 5 The installation structure of the telescopic arm of 3rd Example is shown. Figure 5 In the shown bracket 500 , a predetermined region (first predetermined region) 315 similar to the first embodiment and a predetermined region (second predetermined region) 501 including the shaft portion 316 in the protruding piece 313 are set. The width between the predetermined regions 501, 501 is set narrower than the width of the base arm 210, and the width between the predetermined regions 501, 501 does not have to be W1. The other configurations are the same as those of the first embodiment, and thus descriptions thereof are omitted.

[0054] According to this bracket 500, the same effect as that of the second embodiment can be obtained.

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PUM

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Abstract

A telescopic boom mounting structure is provided which can use an existing shaft member even if the width of the main body of the boom base is increased. This telescopic boom mounting structure mountsa boom base (210) by a bracket (300) so as to enable rising and lowering, wherein the bracket (300) is provided with a pair of contact plates (310) which are bonded to both lateral walls of the baseboom (210) and are held between a pair of opposite holding units on a swivel post, and each contact plate (310) comprises a shaft portion (314) which is attached to a holding unit so as to allow rising and falling; a predetermined region (315) that includes the shaft portion (314) is configured on each of base pieces (312), and width of the bracket (300) outside of said predetermined region (315)is set to be greater than the width of the bracket (300) in the predetermined region (315).

Description

technical field [0001] The present invention relates to a telescopic arm attachment structure for attaching a telescopic arm to a rotating column in a pitchable manner. Background technique [0002] A telescopic arm mounting structure is known in the prior art, that is, a telescopic arm that can be telescopically overlapped with a plurality of intermediate arms inside a basic arm in a telescopic manner is mounted on a rotating column in a pitchable manner. The swivel strut is rotatably installed on the base of the crane (see Patent Document 1). [0003] The installation structure of such a telescopic arm is as follows: a pair of opposing holding plate portions are provided on the rotating strut, the rear portion of the basic arm of the telescopic arm is installed between the holding plate portions through a shaft member, and the shaft member is used to Enables pitching of the base arm relative to the rotating strut. [0004] prior art literature [0005] patent documents ...

Claims

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Application Information

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IPC IPC(8): B66C23/687B66C23/42B66C23/82
CPCB66C23/42B66C23/82
Inventor 石井正裕樫原征男
Owner TADANO LTD
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