JP2009056828A - Arrangement structure of electric wiring in wheel loader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the arranging operation of electric wiring such as cables and harnesses arranged in an engine room in a wheel loader comprised by providing the engine room between right and left airframes. <P>SOLUTION: Upper surfaces 13La, 13Ra of fenders 13L, 13R covering upper side of rear wheels are covered by a cover body and an engine hood covering the upper side of the engine room 11. Meanwhile, the covered upper surfaces 13La, 13Ra of the fenders are used as arrangement spaces for the cables 25 or the harnesses 26. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of an electrical wiring arrangement structure in a wheel loader that performs various bucket operations and the like.

Generally, in a wheel loader, an engine, engine-related equipment, a cooling device such as a radiator, or various equipment such as a battery are housed between left and right body frames on which left and right rear wheel axles are supported. Some engine rooms are provided (for example, see Patent Document 1). In such a wheel loader, an electric wiring such as a cable extending from the battery and a harness connected to various electrical components is also arranged in the engine room. It is necessary to arrange it in a fixed state so that it does not come out of contact with other members due to slippage, so that it has conventionally been fixed along with the left and right inner sides of the left and right body frames while being fixed with clips etc. It was common to arrange.
JP 2004-143871 A

  By the way, in recent years, especially in a small model, the size of the airframe has been reduced so as to make a small turn, and the size between the left and right airframe frames is limited, while the engine etc. stored in the engine room Equipment devices tend to increase in size to meet high output, high performance, exhaust gas regulations, and the like. For this reason, equipment devices such as engines are arranged with almost no space between the machine frame, and in this way there is almost no space between the machine device and the machine frame. However, it is difficult to dispose the conventional electric wiring while being fixed to the left and right inner surfaces of the body frame, and the workability is remarkably inferior. Furthermore, when performing maintenance of equipment in the engine room, there is a problem that the electrical wiring fixed to the left and right inner side surfaces of the machine body frame is obstructive, making it difficult to perform maintenance work. There is a problem to be solved.

SUMMARY OF THE INVENTION The present invention was created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is a wheel roll comprising an engine room between left and right body frames. A fender that covers the upper part of the rear wheels arranged on the left and right outer sides of the left and right aircraft frames so that the upper surface of the fender protrudes from the upper ends of the left and right aircraft frames outwardly to the left and right. The upper surface of the fender is covered with a cover that covers the upper part of the engine room, and the upper surface of the fender covered with the cover is used as an electric wiring space. -Arrangement structure of electrical wiring in the loader.
The invention according to claim 2 is the electrical wiring arrangement structure in the wheel loader according to claim 1, wherein the cover covers the engine room so as to be openable and closable.
According to a third aspect of the present invention, the cover includes an engine hood that covers the upper rear half of the engine room so as to be openable and closable, and a cover that covers the upper front half of the engine room and is provided with a driver's seat. 3. An electric wiring arrangement structure in a wheel loader according to claim 1, wherein the electric wiring is arranged.

According to the invention of claim 1, the upper surface portion of the fender is used as a space for arranging the electric wiring. Thus, the upper surface portion of the fender is effectively used to arrange and fix the electric wiring. Work can be done easily. In addition, the electrical wiring disposed on the upper surface of the fender can contribute to protection of the electrical wiring because there is no possibility of interference with other equipment even if it is slightly deviated due to vibration of the fuselage. This eliminates the need for careful wiring so as not to interfere with the apparatus, and can greatly contribute to the improvement of workability. Furthermore, when performing maintenance on the equipment in the engine room, the electrical wiring disposed on the upper surface of the fender does not interfere with the maintenance work, and can contribute to improving the workability of the maintenance work.
According to the second aspect of the present invention, if the cover is opened, the electric wiring disposed on the upper surface of the fender can be accessed, and therefore the maintenance work of the electric wiring can be easily performed.
According to the invention of claim 3, not only the fender upper surface portion of the portion covered with the openable / closable engine hood but also the fender upper surface portion of the portion covered with the cover body provided with the driver's seat is electrically connected. It can be used effectively as a wiring arrangement space.

  Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a wheel loader. The wheel loader 1 includes a front vehicle 1A provided with left and right front wheels 2L and 2R, and a rear vehicle provided with left and right rear wheels 3L and 3R. 1B is connected through a connecting part 1C so as to be able to swing left and right. The front vehicle 1A is equipped with a working device 6 including a bucket 4, an arm 5 and the like, while the rear vehicle 1B is equipped with various equipment devices such as an engine 7, a driver's seat 8, a fuel tank 9, and not shown. The basic configuration such as mounting various members such as a hydraulic oil tank is the same as the conventional one.

  10L and 10R are left and right body frames constituting the base of the rear vehicle 1B, and the connecting portion 1C is attached and supported at the front part between the left and right body frames 10L and 10R. Further, in the space on the first half side between the left and right body frames 10L and 10R, a hydraulic pump and a hydrostatic continuously variable transmission (not shown) are disposed, while the rear half side between the left and right body frames 10L and 10R is arranged. The space is an engine room 11 in which the engine 7 and engine-related equipment are disposed. Further, left and right rear wheels 3L and 3R, in which axles are supported by the left and right aircraft frames 10L and 10R, are disposed on the left and right outer sides of the left and right aircraft frames 10L and 10R.

  Reference numeral 12 denotes a floor plate that forms a floor surface of the rear vehicle 1B. The floor plate 12 includes a floor plate center portion 12S that is supported between upper end portions of the front half portions of the left and right body frames 10L and 10R. The left and right floor plate side portions 12L and 12R are integrally formed on the left and right sides of the floor plate center portion 12S and project outward from the upper and lower sides of the left and right body frames 10L and 10R.

Further, 13L and 13R are left and right fenders covering the left and right rear wheels 3L and 3R, and the upper and lower surface portions 13La and 13Ra of the left and right fenders 13L and 13R are the left and right floor plate side portions 12L and 12R, respectively. In such a manner that it extends rearward from the rear, it is provided so as to protrude outward from the left and right from the upper end portions of the left and right body frames 10L, 10R.
In the present embodiment, the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R are designed to be slightly higher than the upper surface portions of the left and right floor plate side portions 12L and 12R.

  On the other hand, the engine room 11 is formed in the rear half space between the left and right body frames 10L and 10R as described above, but above the engine room 11 is a cover body 14 and an engine hood 15 (the cover) described later. The body 14 and the engine hood 15 are covered by a cover). The rear of the engine room 11 is covered with a counterweight 16.

  The cover body 14 covers the upper front half side of the engine room 11, and a driver seat 8 on which a driver sits is disposed at the center of the upper surface of the cover body 14. Further, the cover body 14 incorporates an operating device 17 such as a lever operated by the driver, and also has a console function.

  The engine hood 15 covers the upper rear half of the engine room 11 so as to be openable and closable. The engine hood 15 can swing up and down at the upper part of the rear end side of the cover body 14 so that it can be opened from the rear side of the machine body. It is supported. The engine room 11 portion covered by the engine hood 15 and the engine room 11 portion covered by the cover body 14 are not partitioned and are in a continuous state.

Here, the left and right widths of the lower part of the cover body 14 and the engine hood 15 are formed wider than the left and right widths between the left and right body frames 10L and 10R, whereby the cover body 14 and the engine hood 15 are The upper frames 13L and 13R of the left and right fenders 13L and 13R as well as the upper portions of the body frames 10L and 10R are covered. Thus, the upper spaces of the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R are also continuous with the engine room 11 to form a part of the engine room 11.
The upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R are not entirely covered with the cover body 14 and the engine hood 15, but the left and right outer side ends of the upper surface portions 13La and 13Ra are covered with the cover body 14 and The engine hood 15 is exposed. The left and right outer surfaces of the cab 18 are installed in the exposed portion.

  In addition, left and right brackets 19L and 19R are fixed to the rear portions of the left and right fenders 13L and 13R at the rear portions of the left and right body frames 10L and 10R. Is also covered with the engine hood 15. The left and right outer sides of the left and right brackets 19L and 19R are covered with left and right sides of the counterweight 16.

  On the other hand, the engine room 11 is provided with an engine 7, a cooling device 20 such as a radiator and an oil cooler, an air cleaner 21, a muffler 22, a fuel tank 9, and other various engine-related equipment devices not shown. In addition, a battery 23 and an electrical component box (a box in which a relay, a breaker, a fuse box, a terminal block, a controller and the like (not shown) are incorporated) are also provided.

  Here, the battery 23 is arranged in a state of being placed on the left bracket 19L which is fixed to the rear part of the left body frame 10L, and is located on the left part of the rear part of the engine room 11. Further, the electrical component box 24 is disposed below the driver's seat 8 and is located at the center in the left-right direction of the front portion of the engine room 11.

  Furthermore, in the engine room 11, various electric wirings such as a cable 25 connected to the battery 23 and a harness 26 connected to the electrical component box 24 are disposed. The portions arranged in the front-rear direction are arranged using the upper surface portions 13La, 13Ra of the left and right fenders 13L, 13R as the arrangement route.

  That is, the cable 25 connected to the positive terminal of the battery 23 passes through the upper surface portion 13La of the left fender 13 to the front portion of the engine room 11, crosses the engine room 11 in the left-right direction from here, A starter motor 27 and the electric box 24 are arranged. A harness 26 extending from the electrical component box 24 and connected to a lamp (brake lamp, direction indicator lamp, etc.) 28 provided on the counterweight 16 passes through the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R. The engine room 11 is disposed from the front to the rear.

Further, a fixing bracket 29 for fixing the cable 25 and the harness 26 is fixed to the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R by welding or the like. Thus, the cable 25 and the harness 26 are arranged on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R in a state of being fixed by the fixing bracket 29.
The cable 25 and the harness 26 are disposed on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R in a state where the cover body 14 and the engine hood 15 are not assembled to the machine body side.

  By the way, the engine hood 15 covers the upper rear half of the engine room 11 so that it can be opened and closed as described above. Therefore, when the engine hood 15 is opened, the upper rear half of the engine room 11 is opened. However, the upper front half portion of the engine room 11 covered by the cover body 14 can also be accessed from the rear side by opening the engine hood 15. Thus, when the engine hood 15 is opened, the cable 25 and the harness 26 disposed on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R can be easily accessed.

  In the present embodiment configured as described, the left and right rear wheels 3L and 3R are disposed on the left and right outer sides of the left and right body frames 10L and 10R, and the left and right rear wheels 3L and 3R cover the upper sides of the left and right rear wheels 3L and 3R. The fenders 13L and 13R are provided so that the upper surface portions 13La and 13Ra protrude outwardly from the upper end portions of the left and right body frames 10L and 10R, but the upper surface portions 13La of the left and right fenders 13L and 13R are provided. , 13Ra is covered by a cover body 14 and an engine hood 15 that cover the upper part of the engine room 11 formed between the left and right body frames 10L and 10R, and is covered by the cover body 14 and the engine hood 15. The upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R are cables 2 connected to the battery 23. Or, to be used as space for disposing the electric wirings such as a harness 26 connected to the electrical component box 24.

  As a result, when the electrical wiring such as the cable 25 connected to the battery 23 and the harness 26 connected to the electrical component box 24 is arranged in the engine room 11, the electrical wiring is connected to the upper surfaces of the left and right fenders 13L and 13R. Therefore, the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R can be effectively used to arrange the electric wires and to fix the electric wires by the fixtures 29. Fixing work can be performed easily. In addition, since the electrical wiring arranged on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R is not likely to interfere with other equipment devices even if it is slightly deviated due to machine vibrations, etc., the electrical wiring is protected. In addition, it is not necessary to carefully wire so as not to interfere with other equipment, which can greatly contribute to the improvement of workability. Further, when maintenance is performed on the equipment in the engine room 11, the electrical wiring disposed on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R does not interfere with the maintenance work, and therefore the maintenance work. Can also contribute to the improvement of workability.

  In addition, since the electrical wiring disposed on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R is covered by the cover body 14 and the engine hood 15 that cover the upper portion of the engine room 11, the cover The body 14 and the engine hood 15 can protect the electrical wiring disposed on the upper surface portions 13La and 13Ra of the left and right fenders 13L and 13R. If the engine hood 15 is further opened, the upper surfaces of the left and right fenders 13L and 13R are protected. Since the electrical wiring arranged in the parts 13La and 13Ra can be easily accessed, the maintenance work of the electrical wiring can be easily performed, thus contributing to the improvement of the workability of the further maintenance work. .

  Needless to say, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the cover that covers the top of the engine includes an openable / closable engine hood and a driver's seat. Even if the engine hood and the cover body are integrated, that is, the driver hood is provided on an openable / closable engine hood, Of course, the invention can be implemented.

It is a side view of a wheel loader. It is a perspective view which shows the cover body and engine hood which cover an engine room. It is a side view which shows the arrangement | positioning state of the electrical wiring in an engine room. It is a rear view which shows the arrangement | positioning state of the electrical wiring in an engine room. It is a perspective view which shows the arrangement | positioning state of the electrical wiring in an engine room.

Explanation of symbols

3L, 3R Left and right rear wheels 8 Driver's seat 10L, 10R Left and right fuselage frames 11 Engine room 13L, 13R Left and right fenders 13La, 13Ra Upper surfaces of left and right fenders 14 Cover body 15 Engine hood 25 Cable 26 Harness

Claims (3)

  In a wheel loader in which an engine room is provided between the left and right body frames, a fender that covers the upper part of the rear wheels arranged on the left and right outer sides of the left and right body frames, and the upper surface of the fender is a left and right body. The upper surface of the fender is provided so as to protrude outward from the left and right sides of the frame, and the upper surface of the fender is covered with a cover that covers the upper part of the engine room. An electric wiring arrangement structure in a wheel loader, characterized in that it is used as an electric wiring arrangement space.   2. The electric wiring arrangement structure in the wheel loader according to claim 1, wherein the cover covers the engine room so as to be openable and closable.   The cover is composed of an engine hood that covers the upper rear half of the engine room so as to be openable and closable, and a cover body that covers the upper front half of the engine room and is provided with a driver's seat. Item 3. An electric wiring arrangement structure in a wheel loader according to Item 1 or 2.

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