JPH0516835A - Frame of farm working vehicle - Google Patents

Abstract

PURPOSE:To prevent the sticking of mud to a transmission shaft and any possible winding of foreign substances from occurring by a sectional-formed single frame member with each space part at both sides of a partition wall in the longitudinal direction, thereby constituting a body frame, and setting up the transmission shaft in the space part on one side and wire harness in the space part on the other, respectively. CONSTITUTION:A body frame 4 of a rice plansplanter is made up of installing a sectional formed single frame body 4b of horizontal rectangular form, provided with two closed space parts 16, 17 at both sides of an intermediate vertical partition wall 15. Then, a transmission shaft 10 is installed in one side of these spaces 16, 17, while wire harness 18 is installed in the other side. Thus, while it is formed into a single frame structure that prevents any drop in strength and rigidity in a farm working vehicle, such one as being advantageous in view of durability and safety is securable in a state of capable of combining advantageousness from the standpoint of assemblage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame for work vehicles such as rice transplanters and tractors.

[0002]

2. Description of the Related Art A frame of this type is disclosed in, for example, Japanese Patent Laid-Open No.
Like the rice transplanter disclosed in Japanese Patent No. 9024, it was composed of a pair of left and right pipe frame members, and a transmission shaft was passed between the left and right of them.

[0003]

According to the above-mentioned prior art, since the transmission shaft between the left and right frames is exposed, there is a risk of problems such as easy attachment of mud to the transmission shaft and easy inclusion of foreign matters. However, it is desirable to provide a means such as mounting a shaft cover. It is an object of the present invention to focus on the fact that the transmission shaft is arranged along the frame member and improve the structure of the machine body frame to rationally eliminate the above-mentioned problems.

[0004]

In order to achieve the above object, the present invention provides a single frame member having a cross-sectional shape having a space on both sides of an intermediate partition wall and arranged in the front-rear direction. A machine body frame is configured, and a transmission shaft is disposed in one of the space portions and a wire harness is disposed in the other.

[0005]

In the frame having the above characteristic structure, the presence of the intermediate partition wall forms a long space in the front and rear on both sides thereof. Therefore, if a transmission shaft is installed on one side of the space formed on both sides of the intermediate partition wall and a wire harness is installed on the other side, there will be a problem such as a wire harness or miscellaneous matter getting caught around the transmission shaft, and dirt will adhere. The problems that occur are suppressed, and the risk that other things come into contact with the transmission shaft is also reduced. In addition, the aircraft frame will be a single structure composed of a single frame member instead of the conventional double structure, but since this frame member has a cross-sectional shape with an intermediate partition wall, strength and rigidity as a member are strengthened. Therefore, it is possible to maintain the strength and rigidity required for the airframe. And in the assembly, 2
It is easier to set the one frame member to be more advantageous in terms of accuracy and man-hours than the one frame member to be attached.

[0006]

Therefore, by devising a single body frame, the strength of the body frame, that is, the strength and rigidity of the entire work vehicle is not reduced, and the wire harness and other foreign matters are prevented from interfering with the transmission shaft. It was possible to provide a product which can be prevented and which is preferable in terms of durability and safety while being able to combine the advantages of assembly.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a passenger rice transplanter as an example of a work vehicle, where 1 is an engine, 2 is front wheels, 3 is rear wheels, 4 is a vehicle frame, 5 is a rear mission, 6 is a front mission, and 7 is a A PTO shaft, 8 is a planting device, and 9 is a control unit. In this rice transplanter, the power of the engine 1 is first input to the rear mission 5 via the transmission shaft 10 and then to the front mission 6 via the front wheel drive shaft 11. The front case 12 that houses the front mission 6 is supported on the lower side of the front part of the body frame 4, and the rear case 1 that houses the rear mission 5 is also provided.
3, the central rear axle case 13a and the left and right flange cases 13b, 13b are connected and integrated as shown in FIG. 4, and the left and right overhang flange cases 13 are formed.
b are connected to each other by a mountain-shaped reinforcing stay 14 bolted to the rear axle case 13a. Next, the airframe frame 4 will be described. As shown in FIG. 3, the airframe frame 4 includes a mount base 4a on which the engine 1 is mounted and arranged at the front and rear ends of a rectangular tube-shaped frame body (corresponding to a frame member) 4b. And a mount base 4c of the rear mission 5 are fixed to each other to form a monoframe structure. The frame body 4b has a vertical partition wall 1 whose cross-sectional shape is intermediate.
5 is composed of a single member having a lateral "Sun" shape having space portions 16 and 17 on both sides, and the transmission shaft 10 is disposed in the right space portion 16 and the left space portion 17 is provided. A wire harness 18 is provided. The intermediate vertical partition wall 15 acts to reinforce the strength and rigidity against bending in the vertical direction. The structure of the frame body 4b is shown in FIG.
As shown in (a), the bottom plate 19 to which the vertical partition wall 15 has been welded in advance is covered with the lid-shaped upper plate 20, and the upper plate 20 and the vertical partition wall 1
5 and the bottom plate 19 are each welded to a flange plate die, or as shown in FIG. 5B, a lateral U-shaped side member 22 is attached to a base member 21 formed in advance in the shape of a square pipe and welded. Various types such as a composite type formed by welding, a rectangular type pipe 23 having a horizontally long cross-sectional shape shown in FIG. 5C and a vertical partition wall 15 welded thereto, or an integral structure formed by extrusion molding. Be done. Further, it may be a frame body 4b having a lateral "H" -shaped cross section as shown in FIG. Further, although not shown, it may have a vertical "Sun" -shaped cross section. In this case, the intermediate partition wall reinforces the strength and rigidity against lateral bending.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of a riding rice transplanter

[Figure 2] Plan view of a riding type rice transplanter

FIG. 3 is a perspective view showing a structure of a body frame.

FIG. 4 is a rear view showing the structure near the rear case.

5 (a), (b), (c), and (d) are cross-sectional views showing different structures of the frame body.

[Explanation of symbols]

 4b frame member 10 transmission shaft 15 partition wall 16 and 17 space portion 18 wire harness

Claims (1)

Claim: What is claimed is: 1. A single frame member (4b) having a cross-sectional shape having space portions (16) and (17) on both sides of an intermediate partition wall (15) is arranged in the front-rear direction. A work in which a body frame is provided to dispose the transmission shaft (10) in one of the space portions (16) and (17) and a wire harness (18) is disposed in the other. Car frame.