JP2001278131A - Driving unit structure in work vehicle - Google Patents

Abstract

(57) [Problem] To provide a driving unit structure in an economical work vehicle that reduces the processing labor, the assembling process, and the number of parts, thereby reducing costs. SOLUTION: This is a driving part structure in a working vehicle in which a driving seat 1 is arranged on a ceiling wall 2d of an engine room 3 and a handrail part 21 is provided above a lateral outer wall 20 of the engine room 3. The handrail portion 21 is formed by blow molding of a resin material, and a part of the handrail portion 21 bulges in a hollow shape toward the inside of the machine body, and a switch box provided with a switch mounting portion 22 on an upper portion thereof. Part 21B
Is configured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving unit structure for a working vehicle such as a combine.

[0002]

2. Description of the Related Art In recent years, in a working vehicle such as a combine or the like, a driver seat is provided on a ceiling wall of an engine room.
An operation unit structure in which a handrail is provided on the upper side of a lateral outer wall of an engine room is often used.

[0003] The handrail portion of the lateral outer wall is used as a handrail at the time of getting on and off the driving unit and driving and running, and includes a key switch and a horn switch on the inner surface of the handrail portion. There is also a configuration in which a switch box such as the above is attached to utilize the space between the driver's seat and the handrail.

[0004]

However, in the driving section structure having such a structure, there is a problem that the empty space between the driver's seat and the handrail section can be effectively used, and the location can be easily operated manually. On the other hand, there is a problem that a dedicated switch box is manufactured only for mounting a small number of switches and is mounted on a handrail portion, which leads to an increase in processing time, an assembling process, and an increase in the number of parts. ing.

The present invention has been made in view of the above situation, and its main problems are processing time, assembling process,
An object of the present invention is to provide a driving unit structure in an economical work vehicle by reducing the number of parts and reducing costs.

[0006]

According to a first feature of the present invention, a driver's seat is provided on a ceiling wall of an engine room, and a handrail is provided on an upper portion of a lateral outer wall of the engine room. An operation unit structure in a work vehicle, wherein the handrail portion is formed by blow molding of a resin material, and a part of the handrail portion bulges in a hollow shape toward the inside of the machine body, and is formed on an upper portion thereof. A switch box section having a switch mounting section is configured, and the operation and effect thereof are as follows.

[Effect] By forming the handrail portion and the switch box portion at a time by blow molding, processing time and assembling are required as compared with the case where a switch box which is a separate component is attached to the handrail portion. The process and the number of parts can be reduced.

[Effect] Therefore, cost can be reduced. In addition, the weight can be reduced.

A feature of the invention according to claim 2 is that a wiring insertion window is formed in the lateral outer surface of the switch box, and the opening edge is bent to form a stepped flange. The effects are as follows.

[Function and Effect] By forming a stepped flange integrally formed with the opening edge at the opening edge portion, the strength of the opening edge portion can be increased. Since there is no need to attach and reinforce another reinforcing member around the edge, the configuration does not require a reinforcing member, so that further cost reduction and weight reduction can be achieved.

According to a third aspect of the present invention, a mounting portion for an upper portion of a lateral outer wall of an engine room is formed on a lateral outer surface of the handrail portion, and a bottom surface which is in contact with the ceiling wall. Is characterized in that a recess for escape from the mounting member of the ceiling wall is formed, and the operation and effect are as follows.

[Effects] For example, the heat that is transmitted when the engine is stopped and transmitted via the ceiling wall of the engine room can be radiated through the clearance between the escape recess and the ceiling wall, and can be released. The heat sink can be dissipated by increasing the heat radiation surface area of the bottom of the handrail by the concave part for the handrail, so even if the bottom of the handrail may be excessively heated, avoid it. It has a structure that can be. In addition, the shape retaining strength of the entire handrail portion can be improved by the reinforcing effect due to the presence of the recess for escape.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which the present invention is applied to a driving unit structure in a combine will be described.

FIG. 13 shows an overall side view of the combine A, in which a mowing section C is provided in front of the operating section B, a threshing section D and a Glen tank F are provided in the rear, and a crawler type traveling device G is provided in the lower portion. Deployed.

As shown in FIGS. 1 to 6, the driving part structure of the combine A has a driver's seat 1 provided on a ceiling wall 2d of an engine hood 2 and a rear wall 2a of the engine hood 2 provided on the body. Side wall 2c having the remaining front wall 2b, outer wall 2c, and ceiling wall 2d.
An engine bonnet 2A which is openable and swingable about a lower longitudinal axis P1 is formed. The inside of the engine hood 2 forms an engine room 3.

A driving unit 4 disposed in the engine room 3 has a radiator 5 disposed outside the fuselage and an engine E disposed inside the fuselage. An output pulley is disposed near the engine E inside the fuselage. .. Are arranged, and as shown in FIG. 3, a dustproof net 6A is provided on the outer side wall 2c of the engine bonnet 2 in a state where the driving unit 4 is closed.
A vent window 6 with holes and a perforated baffle plate 8 for equalizing the pressure distribution of the intake air of the radiator fan 7 are provided so that outside air can be taken into the air introduction window 5A of the radiator 5, and the front wall 2a of the engine bonnet 2A is provided. Is provided with a ventilation window 9 with a dustproof net 9A, and is configured so that outside air can be taken into the air introduction window 5A of the radiator 5 via the passage 9B in the front wall and the perforated baffle plate 8.

As shown in FIGS. 4 and 5, the lower portion of the outer wall 2c of the engine bonnet 2A is pivotally supported around a longitudinal axis P1, and one end 10a is integrally attached to the engine bonnet 2A. The stay 10 is rotatably supported by the lateral outer wall 20 and the other end 10b is supported by a stay through a long guide hole 11 formed on the side of the fuselage. The guide is configured to restrict further rotation in a state where the guide is lying down at a predetermined angle.

Therefore, as shown in FIG. 4, when the engine bonnet 2A, which is swingable, is closed,
The engine bonnet 2A can be manually turned to the outside of the machine body to open the engine bonnet 2A as shown in FIG. When the engine hood 2A is open, as shown in FIG.
The periphery and the radiator 5 are exposed to the outside, and the rear wall 2 of the engine bonnet 2A in an inverted state.
Since e is open, the engine E and the radiator 5 can be repaired and maintained through this open portion. Although not shown, the engine bonnet 2A, which is swingable with respect to the machine body, cannot swing open and close at all times via a lock mechanism.

Further, as shown in FIG.
Is rotated around the longitudinal axis P2 to the right side of the fuselage,
When the rear part is opened, the engine hood 2B on the fuselage side
The rear wall is exposed. As shown in FIG. 6, the rear wall 2a has a central rear wall portion 2aa detachably attached thereto via bolts or the like. When the rear wall portion 2aa is detached from the body, the engine of the driving unit 4 The rear part such as E can be exposed, and the exposed part can be repaired or maintained. Here, in the drawing, reference numeral 30 denotes an air cleaner provided behind the driver's seat 1, and reference numeral 31 denotes a muffler.

Next, a description will be given of the structure of the driving unit in the combine. As shown in FIG. 1, FIG. 4, and FIG. 13, the ventilation window 6 with the dustproof net 6A is provided on the outer wall 2c of the engine bonnet 2A from the center to the lower part, and the handrail 21 is provided on the upper part. The formed lateral outer wall 20 is connected.

As shown in FIG. 7, the handrail 21 is
The central portion is hollowed out, and the curved upper surface portion 21A becomes a gripping portion. The hollow upper portion is formed by blow molding of a resin material, and a part of the handrail portion 21 is hollow toward the inside of the body. A switch box portion 21B having a switch mounting portion 22 on the upper side is formed.

As shown in FIG. 8, the switch box 21B is disposed between the driver's seat 1 and the handrail body 21C, and the front and rear step surfaces 22 are low on the front side and high on the rear side.
a, 22b, and a key switch 2 on the front step surface 22a.
Horn switch 2 is provided on the rear step surface 22b.
4 is provided so that the operator sitting on the driver's seat 1 can operate the switches 23 and 24 with the right hand. Here, since the switches 23 and 24 are provided at different heights and positions, there is no possibility that the operator performs an erroneous operation.

Further, as shown in FIGS. 7 and 11, a large number of hooking recesses 21d are formed continuously over a predetermined length in the inner corner portion of the upper surface portion 21A of the handrail portion 21. It is configured so as to form a handhold grasped when riding and prevent slipping.

As shown in FIGS. 9 and 12, a wiring insertion window 22 for inserting the wiring of each of the switches 23 and 24 is formed in the lateral outer surface 22A of the switch box 21B.
An opening E is formed. The opening edge of the wiring insertion window 22E is bent to form a stepped flange 22F, thereby reinforcing the wiring insertion window 22E.

A plurality of recessed mounting portions 21F for the upper portion of the horizontal outer wall 20 of the engine room 3 are formed on the horizontal outer surface 21D of the handrail portion 21.
It is configured to be able to be attached to the upper part of. This mounting part 2
1F is formed by recessing the opposite surface in a concave shape, leaving a bolt seat 21f on the side corresponding to the lateral outside during blow molding.

Also, Handrail 21 corresponding to lateral outer wall 20
As shown in FIG. 12, a plurality of chamfers 21G... Having a predetermined length are formed at corner portions which are hidden and invisible when connected to the lateral outer wall, and the rigidity of the entire handrail portion 21 is reduced. Ingenuity has been made.

The ceiling wall 2d of the engine bonnet 2A
The bottom wall 21H of the handrail portion 21 that comes into contact with the
A pair of relief recesses 21K, 21K for the attachment member 25 between the outer wall 20 and the outer wall 20 are formed.

Further, as shown in FIG.
Are drained at a plurality of corner corners of the bottom surface 21H of the bottom of the handrail. If dew condensation occurs due to a temperature difference between the outside air and the inside of the handrail, dew condensation water flows through the drain hole 21L. Flows out to the outside.

[Other Embodiments] (1) In the above embodiment, an example was described in which the driving unit structure of the working vehicle of the present invention was applied to the combine, but the present invention is not limited to this, and the present invention is not limited to this. The present invention may be applied to a driving unit structure in a working vehicle such as a machine, a radish harvester, or the like.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of an operation unit according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part in a state where an engine hood is turned down.

FIG. 3 is a plan view of a main part of the fuselage showing a driving part with an engine hood cut away.

FIG. 4 is a longitudinal sectional view showing the driving unit with a cutout.

FIG. 5 is a vertical cross-sectional view of a driving unit in which an engine hood is turned over.

FIG. 6 is a longitudinal sectional view showing the driving unit from the rear side with the engine bonnet turned over.

FIG. 7 is an exploded perspective view showing a relationship between a lateral outer wall and a handrail.

FIG. 8 is a perspective view of a main part in a state where a handrail is attached to a lateral outer wall.

FIG. 9 is a sectional view of a handrail.

FIG. 10 is a sectional view of a hook portion of a handrail portion.

FIG. 11 is a rear view of the handrail seen from the switch box side.

FIG. 12 is a perspective view of the handrail viewed from the bottom side.

FIG. 13 is an overall side view of the combine.

[Explanation of symbols]

 A Combine B Operating part 1 Driver's seat 2 Engine bonnet 2d Ceiling wall 3 Engine room 4 Driving part 20 Lateral outer wall 21 Handrail part 21D Lateral outer side 21H Bottom 21K Relief recess 22 Switch mounting part 22E Wiring insertion window 22F Mounting part 25 Mounting Element

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Minoru Hiraoka 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (72) Inventor Masachi Fukushima 64 64 Ishizukitamachi Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. Inside the factory (72) Inventor Yoshitaka Higashikawa 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside the Kubota Sakai Factory (72) Inventor Junta Kuwae 64, Ishizukita-machi Sakai City, Osaka Prefecture F-term in the Kubota Sakai Factory (Reference) 2B074 AA01 AB01 AC02 BA04 BA15 CD02 CD08 DA02 DC01 DE03 DE06 DE09 DF03 GE05 GH02 GJ04 2B076 AA03 BA08 BC07 CD01 CD04

Claims (3)

[Claims] 1. A driving unit structure for a working vehicle in which a driver's seat is provided on a ceiling wall of an engine room and a handrail is provided on an upper side of a lateral outer wall of the engine room, wherein the handrail is made of resin. A work vehicle that is formed by blow molding of a material, has a part of the handrail part bulged inward toward the inside of the machine body, and has a switch box part provided with a switch mounting part on the upper part thereof. Driving unit structure. 2. The driving unit in a work vehicle according to claim 1, wherein a wiring insertion window is formed in a lateral outer surface of the switch box portion, and an opening edge thereof is formed to be bent so as to form a stepped flange. Construction. 3. A mounting portion for an upper portion of a horizontal outer wall of an engine room is formed on a lateral outer surface of the handrail portion, and a relief for a mounting member of the ceiling wall is formed on a bottom surface that contacts the ceiling wall. 3. The driving unit structure in the working vehicle according to claim 1, wherein a concave portion is formed.