JP4890929B2 - Electrical equipment storage structure for work machines - Google Patents

Description

The present invention relates to an electrical component storage structure for a work machine, and more particularly, to an electrical component storage structure with a simple structure that allows easy mounting and maintenance of electrical components.

A work machine such as a wheel loader or a hydraulic excavator includes many operating devices such as an engine, a working device, and a traveling device, and is equipped with a large number of electrical components such as relays, fuses, breakers, and the like that control these operations. These electrical components are housed together in a place where they can be protected from dust, obstacles, and mischief. Each electrical component is connected to a wire harness that is an integrated assembly of electric wires, connection connectors, wiring components, and the like and attached to the machine body.

An example of the electrical equipment storage structure is that electrical equipment such as relays, fuses, and breakers are attached to the storage space formed under the seat of the driver's seat with bolts, screws, etc., and the wires branched from the wire harness are connected to each. ing. Installation of these electrical components and connection of electric wires are performed through an opening with a lid located at the foot of the seat.

In another example of the storage structure, the mounting base of the electrical component is attached to the space under the seat so that the opening can be freely inserted and removed by the rail member, and the mounting base is pulled out of the storage box for electrical component installation and wire connection work. (For example, refer to Patent Document 1).
JP-A-12-96609 (FIGS. 3 and 4)

The conventional electrical equipment storage structure for a work machine having the above-described configuration has the following problems to be solved.

The structure in which electrical components are attached and electric wires are connected in the storage space is poor in workability and takes a lot of work time because the electrical components are attached and the electric wires are connected in a relatively small storage space.

The structure in which the mounting base for attaching the electrical component is inserted and removed through the opening from the storage space is relatively complicated, requires a large installation space, and increases the manufacturing cost.

The present invention has been made in view of the above facts, and its technical problem is that an electrical component storage structure that can easily perform mounting and maintenance of electrical components stored together in a work machine with a simple structure. Is to provide.

According to the present invention, as an electrical equipment storage structure for a work machine that solves the above technical problem, a storage box for storing electrical equipment is installed in a space between a seat support frame to which a seat is attached and a floor, and a steel plate in a rectangular channel shape. A main body with the channel shape oriented in the front-rear direction of the seat and each bent tip attached to the floor, and a lid attached with electrical components and detachably attached to an opening on the rear side of the main body An electrical component storage structure for a working machine is provided , comprising: a maintenance lid for the electrical component that is detachably attached to the front opening of the main body .

Preferably, the seat seat support frame, on the rear side of the lid is provided with access capable open to the mounting surface of the seat when removed seat.

In the electrical equipment storage structure for a work machine configured according to the present invention, the electrical equipment storage box includes a detachable lid to which the electrical equipment is attached. Therefore, before attaching the lid to the electrical component storage box, it is possible to attach the electrical component to the lid and connect the electric wire to the electrical component, and in this state the lid can be attached to the storage box. Work can be done easily.

Hereinafter, an electrical component storage structure for a work machine configured according to the present invention will be described in more detail with reference to the accompanying drawings illustrating a preferred embodiment of a wheel loader that is a typical work machine.

The wheel loader will be described with reference to FIG. A wheel loader indicated by number 2 includes a front vehicle body 8 having left and right front wheels 4 and 4 and a work device 6, a left and right rear wheels 10 and 10, a driver seat 12, and a rear vehicle body 16 having an engine compartment 14. I have. The front vehicle body 8 and the rear vehicle body 16 are connected so as to freely bend around the axis 3.

This will be described with reference to FIG. 2 together with FIG. The rear vehicle body 16 includes a flat floor 18. A seat support frame 20 is installed on the floor 18 at the center of the rear vehicle body 16, and the seat 12 is mounted thereon. The periphery of the seat 12 is surrounded by a console 22 formed integrally with resin or the like. An engine compartment 14 located behind the seat 12 is provided with a hood 24 that can be freely opened and closed. A steering wheel 26 for steering is installed in front of the seat 12.

Electrical components such as relays, fuses, breakers, etc. are collectively stored in a storage box 28 installed in the space between the seat support frame 20 and the floor 18 so that they can be protected from dust, obstacles, and mischief. .

With reference to FIG. 1, an electrical component storage structure denoted by reference numeral 30 will be described. The storage box 28 in the electrical component storage structure 30 includes a detachable lid 34 to which the electrical component is attached.

The seat support frame 20 that forms a space in which the storage box 28 is installed includes a pair of U-shaped pipes arranged in parallel and four legs 20a formed by respective ends, and four legs. A flat rectangular pedestal 20b forming a seat mounting surface S, which is horizontally fixed between the upper portions of the leg portions 20a, is provided. The four leg portions 20a are fixed to the floor 18 by two bolts 21 via attachment plates 20c at the respective ends.

The seat mounting surface S includes the mounting holes 20d of the console 22 (FIG. 2) at the four corners of the rectangle. In the central part of the mounting surface S, a rectangular opening 36 is provided that allows access to the lid 34 of the storage box 28 installed in the lower space. A mounting hole 20e of the seat 12 (FIG. 3) is provided on the periphery of the opening 36.

The storage box 28 includes a main body 28a formed by bending a steel plate into a rectangular channel shape, and includes an attachment portion 28b to the floor 18 that is formed by bending each bent end. The main body 28a has a rectangular channel shape directed in the front-rear direction of the seat 12 (the left-right direction in FIG. 3), and the mounting portion 28b is fixed to the floor 18 with bolts 38. The lid 34 is attached to the rear side of the main body 28a.

The lid 34 is formed in a rectangular shape that matches the channel shape of the main body 28a by a steel plate, and four corners of the rectangle are attached to the main body 28a by bolts 40 (BB cross-sectional view). On the inner surface of the lid 34 and on the inner side of the main body 28a, a pedestal, a bracket, and the like (not shown) are provided as appropriate according to the type and shape of the electrical component to be attached.

An elastic seal 42 formed of synthetic rubber is fitted on the opening edge of the front side of the main body 28a. The elastic seal 42 is in contact with a maintenance lid 48 that is detachably attached to the front surface (FIG. 2) of the console 22 by a screw 44 to keep the housing box 28 sealed. The maintenance lid 48 is opened and closed, and daily maintenance inspection of the electrical equipment 32 in the storage box 28 is performed.

The electrical component mounting operation in the electrical component storage structure 30 will be described with reference mainly to FIG. First, the main body 28a of the storage box 28 is attached to the floor 18 in the space of the seat support frame 20 before the seat 12, the console 22 and the like are attached (the state shown in FIG. 1).

A separate electrical component 32, for example, relays 32a, breakers 32b, fuses 32c, etc., are attached to the lid 34 before being attached to the main body 28a of the storage box 28, and an electric wire 46a branched from the harness 46 of the fuselage is attached. Connect to them (A arrow view).

The lid 34 to which the electrical component 32 is attached and to which the harness 46 is connected is passed through the body 18 through the hole 18a with the grommet of the floor 18 at the other end of the harness 46, and the bolt 34 (BB sectional view taken along the line B-B). ).

Conversely, the harness 46 may be drawn from the hole 18a of the floor 18 from the airframe and connected to the electrical component 32 attached to the lid 34 in a single state.

The effect of the electrical equipment storage structure 30 of the working machine as described above will be described.

In the electrical equipment storage structure 30 of the work machine configured according to the present invention, the electrical equipment storage box 28 includes a detachable lid 34 to which the electrical equipment 32 is attached. Therefore, before attaching the lid 34 to the storage box 28, the electrical component 32 can be attached to the lid 34, and the electric wire 46 a of the harness 46 can be connected to the electrical component 32, and the lid 34 can be attached to the storage box 28 in this state. .

Therefore, the installation of electrical components and the connection work of electric wires in the electrical component storage box can be substantially eliminated, so that workability is improved and the work can be performed in a short time. It becomes easy. In addition, the configuration is simple compared to the mounting base for electrical components that is taken in and out of the storage space.

The storage box 28 is installed in the space of the seat support frame 20 to which the seat 12 is attached. The seat support frame 20 can access the lid 34 of the storage box 28 when the seat 12 is removed from the mounting surface S of the seat 12. An opening 36 is provided. Therefore, when maintenance or inspection of the electrical component 32 in the storage box 28 is required, the lid 34 of the storage box 28 can be easily removed from the opening 36 by removing the seat 12 from the seat support frame 20.

When the work machine includes the engine room 14 having the hood 24 that can be opened and closed behind the seat 12 shown in FIG. 3, the hood 24 of the engine room 14 is opened to access the lid 34 of the storage box 28. Can do.

The perspective view of the electrical equipment storage structure of the working machine comprised according to this invention, the arrow view and sectional drawing of the principal part. The enlarged perspective view which showed the part of the electrical equipment storage structure of FIG. 3 in the state which removed the seat. The side view of the wheel loader provided with the electrical equipment storage structure of the working machine comprised according to this invention

Explanation of symbols

2: Wheel loader (work machine)
12: Seat 20: Seat support frame 28: Storage box 30: Electrical component storage structure 32: Electrical component 34: Lid 36: Opening S: Seat mounting surface

Claims (2)

A storage box for storing electrical components is installed in the space between the seat support frame to which the seat is attached and the floor,
A body formed by bending a steel plate into a rectangular channel shape, with the channel shape directed in the front-rear direction of the seat, and a bent tip attached to the floor,
A lid on which electrical components are attached and removably attached to the rear opening of the main body ;
A maintenance lid for the electrical component detachably attached to the front opening of the main body;
An electrical component storage structure for a working machine, comprising: Seat seat support frame, working machine electrical equipment container structure of claim 1, wherein the access to the rear side of the lid is provided with an opening which can be the mounting surface of the seat when removing the seat .

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