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Swiveling work machine

A technology of operating machines and rotating shafts, which is applied to earth movers/excavators, construction, etc., and can solve problems such as difficulties and lower stability

Inactive Publication Date: 2010-05-12
KUBOTA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned conventional backhoe, in order to ensure the strength for supporting the excavating device, the vertical width of the front end side of the left and right longitudinal ribs, which is inserted between the upper and lower support brackets, is made wider. However, because the base of the upper and lower support brackets The side is placed under the steps, so it is difficult to lower the bottom of the cabin to improve stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0036] Such as figure 1 The shown backhoe 1 is essentially composed of a lower travel unit 2 and an upper swivel body 3 .

[0037] The traveling device 2 is a crawler-type traveling device as follows: the crawler belt 7 is mounted via the sprocket 4, the idler wheel 5, and the road wheel 6, and the crawler belt 7 is driven by the hydraulic motor 8 to rotate the sprocket 4. Cycle back and forth.

[0038] A dozer blade 9 is provided on the front of the traveling device 2 .

[0039] The rotary body 3 has a rotary table 10 provided on the traveling device 2 so as to be rotatable about a vertical rotation axis X, and a working device (excavation device) 11 provided on the front portion of the rotary table 10, A cabin 12 forming a cab is mounted on the rotary table 10 .

[0040] A pair of upper and lower support brackets 13 made of a plate that supports the working device 11 is provided at the front portion of the rotary table 10 .

[0041] The working device 11 is provided wit...

no. 2 Embodiment approach

[0086] Figure 9 ~ Figure 11 Indicates other implementations. In such as Figure 9 In the shown second embodiment, the rear portion of the narrow portion 47 on the rear side of the left longitudinal rib 37L is formed linearly in the front-rear direction, and is connected to the reinforcement plate 54 in the left-right direction, and the reinforcement plate 54 is reinforced by The plate 55 is connected to the reinforcing block 50. Also, on the right side of the reinforcing block 50, an extending portion 56 protruding forward and connected to the longitudinal rib 37R on the right side is provided. The aforementioned reinforcing plate 54 is connected to On the extended part 56.

[0087] In addition, the left vertical rib 37L and the reinforcing plate 55 may be integrally formed.

[0088] other constitutions, as described above Figure 1 to Figure 8 The illustrated embodiments are constructed approximately in the same manner.

no. 3 Embodiment approach

[0090] in such as Figure 10 In the third embodiment shown, the rear narrow portion 47 of the left longitudinal ribs 37L, 37R is formed in a straight line extending from the front wide portion 46 to the rear, and is connected to the reinforcement plate in the left and right direction. 54, the left end side of the reinforcing plate 54 is arranged in the front-rear direction, the rear end is connected to the reinforcing plate 57, the aforementioned reinforcing plate 57 is connected to the reinforcing block, and the right end side of the aforementioned reinforcing plate 54 is connected to the right side of the reinforcing block 50. On the extension part 56 .

[0091] Other configurations are substantially the same as those of the aforementioned embodiment.

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PUM

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Abstract

A swivel work machine includes a traveling unit (2), a swivel base plate (36) supported on the traveling unit to be pivotable about a vertical swivel axis (X), the swivel base plate having a first lateral side and a second lateral side provided across said vertical axis, a pair of upper and lower support brackets (13) disposed at a front end of the swivel base plate with an offset toward said first lateral side and adapted for supporting an implement (11), a pair of left and right vertical ribs (37L, 37R) extending rearward from the support brackets and fixed to the swivel base plate and a cabin (12) mounted on the swivel base plate. The cabin is disposed with an offset toward said second lateral side relative to the support brackets, a bottom of the cabin being disposed downwardly of theupper support bracket. The vertical rib (37L) disposed on the side of the second lateral side extends, from its front portion to its intermediate portion, parallel with a side face of the cabin on theside of the first lateral side.

Description

technical field [0001] The present invention relates to a rotary working machine such as a backhoe. [0002] In the following description, among the left and right side surfaces of the rotary table or its rotary base plate in the straight-moving state of the machine body, either side is referred to as one lateral side or the first lateral side, The other side is called the other lateral side or the second lateral side. Background technique [0003] A backhoe, which is an example of a conventional rotary working machine, is provided with a rotary table on a traveling device so as to be rotatable about a vertical axis of rotation, and a rotary table is supported on the front portion of the rotary table. Working equipment (excavation equipment) such as a frame, a boom, a boom, and a bucket (refer to Japanese Patent Application Laid-Open No. 2004-268799, or EP1 457 364 A1 corresponding thereto). [0004] The aforementioned rotary table is provided with a rotary base plate supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/08
CPCE02F9/0816
Inventor 古贺谦三下家静夫加藤好洋佐藤文纪松本孝则宫田直树
Owner KUBOTA CORP