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work machine

A working machine and body technology, which is applied to agricultural machinery and implements, agriculture, harvesters, etc., can solve the problems of auxiliary speed change operation deformation, complicated procedures, and high cost, and achieves simple structure, simple injection operation, and easy to form. Effect

Active Publication Date: 2020-05-01
KUBOTA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] In the working machine described in the above-mentioned Patent Document 4, it is useful in that the power output shaft can be pulled out from the bevel gear so that maintenance work can be easily performed. However, pulling out the power output shaft requires Removing the bevel gear from the desired installation position will easily complicate the procedure for reassembly. There is room for improvement in this regard.
[0021] In the working machine described in the above-mentioned Patent Document 5, a crank-shaped member for pushing and pulling the operation shaft is used, but since it is a die-cast product, the cost is likely to increase, and cracks, etc. may occur. problem, there is room for improvement in this area
[0022] In the work machine described in the above-mentioned Patent Document 6, the structure is such that the sub-gear lever protrudes toward the driver's seat side from the opening provided in the lower part of the control box, thereby making it easy to arrange the sub-gear lever on the machine body. However, if the handle is made as high as possible and the protruding length of the sub-gear lever from the upper surface of the gearbox is made longer, deformation will occur during the operation of the sub-gear. , it may be difficult to perform work such as replacing the seal on the protruding part protruding from the gearbox, and there is room for improvement in this regard

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0349] In the above-described embodiment, the universal joint 120 is provided in the middle of the travel output shaft 74 as the power transmission shaft, and the joint cover 121 covering the universal joint 120 is provided. A joint housing 125 is used as the connection site, and the pipe joint 127 connects the power transmission shafts without the universal joint 120 to each other.

[0350] In this case, as Figure 21 As shown, what is necessary is just to attach the grease nipple 123 to the cylindrical flat part 126 of the corrugated flexible tube.

[0351] This structure, instead of connecting the rear axle box 19 with the body frame 10 via the lower link 35, the upper link 36 and the cross bar 38 as shown in the embodiment, and using the suspension spring 37 through the five-link It is not supported by a vertically and rotatably supported structure in the form of a suspension, but is suitable for a support structure that can only rotate around the axis in the front-rear d...

Embodiment approach 2

[0354] In the above-mentioned embodiment, the structure in which the cylindrical flat portion 122 is formed on the joint housing 121 was exemplified, but the present invention is not limited thereto.

[0355] For example, the flat portion 122 is not limited to cover the entire circumference in the circumferential direction, and may be provided only in a part of the circumferential direction sufficient to attach the grease nipple 123 , a gasket, and the like.

[0356] In addition, although the flat portion 122 includes a completely flat surface, it does not mean only a completely flat surface, and may be a surface composed of a single curved surface such as a cylinder shown in the embodiment, or a toric surface such as a gentle spherical surface. What is more, it is only necessary to be flat so that when the grease nipple 123, the gasket, etc. are installed, the surface shape of the joint cover 121 is deformed to avoid creating a gap between the grease nipple 123, the gasket, an...

Embodiment approach 3

[0359] In the above-mentioned embodiment, even in the state where the planting output shaft 92 is pulled out, the attitude of the fourth bevel gear 91 attached to the planting output shaft 92 is maintained to maintain the position of the third bevel gear 88 on the upstream side of the transmission. As means for the degree of the meshing state, the operation lever 79 for sub-shift operation is used, but it is not limited thereto.

[0360] For example, instead of the operation lever 79 for shifting operation, it may be constituted by a separate shaft arranged in the transmission case 3, or a shaft dedicated for receiving may be provided.

[0361] In addition, a dedicated receiving portion for receiving the fourth bevel gear 91 may be formed on the inner wall of the transmission case 3 .

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PUM

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Abstract

The present invention provides a working machine for simplifying grease injection work while suppressing the invasion of muddy water or the like into a joint cover. A working machine comprises: a universal joint (120) disposed midway of a power transmission shaft (74); and a joint cover (121) covering that universal joint (120). To the joint cover (121), a grease nipple (123) capable of injecting grease to the universal joint (120) in the inside of a cover is attached such that an injection port is exposed to the outside of the joint cover (121).

Description

technical field [0001] The present invention relates to an operating machine, which has an operating device such as a traveling body that can move in a field, and a series of operating devices for planting seedlings or sowing rice seeds on the ground, or the operating mechanism can be installed of. [0002] In addition, the so-called planting and sowing series operation device mentioned in the present invention refers to a device for planting plant seedlings or sowing rice seeds like a seedling planting device or a seeding device. The so-called planting and sowing series operation machine has the The operating machine of the planting and seeding series of operating devices. Background technique [0003] As described above, there are, for example, structures described in the following [1] to [6] as working machines that have working devices or are configured to be mountable. [0004] [1] is a structure in which a universal joint is provided in the middle of the power transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C11/02A01C7/06A01C19/02A01D69/10A01D69/06
Inventor 大西哲平岸冈雄介儿岛祥之谷口大辅
Owner KUBOTA CORP