JP3608157B2 - Electrical equipment storage structure for construction machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical component storage structure for a construction machine, and more particularly to an electrical component storage structure that can easily perform operations such as inspection, repair, and replacement of electrical components.
[0002]
[Prior art]
Construction machines such as hydraulic excavators and crane trucks are provided with many operating devices such as an engine, a working device, and a traveling device. And in order to control these actuators effectively, many electrical components, such as a controller containing an electronic component and a relay, are equipped. These electrical components are gathered together with connectors, wire harnesses, etc., and are appropriately put in electrical component storage boxes etc. so that they are properly protected from rainwater, dust, obstacles, mischief, vibration, impact, etc. It is stored in the aircraft. Typical storage locations include a machine room in which equipment such as an air filter is installed, and a seat mount in the cab.
[0003]
[Problems to be solved by the invention]
However, the conventional electrical equipment storage structure for a construction machine having the above-described form has the following problems to be solved.
[0004]
(1) Waterproof and weatherproof:
When electrical components are installed in a machine room or the like, sufficient measures are required for waterproofing against rain water, airframe washing water, etc., resistance to ambient temperature, humidity, etc., or dust, dust, etc.
[0005]
(2) Maintainability:
When installing electrical components in the cab, worry about waterproofing, weathering, dust, etc. is removed, but the cab is small, making maintenance work such as inspection, repair, and replacement of electrical components difficult, and various covers. Must be removed, and maintainability of the electrical components is poor.
[0006]
(3) Installation space:
In recent construction machines, the space for installing electrical components has increased due to increased engine horsepower, increased fuel tank capacity, noise reduction, downsizing of the fuselage, etc., and increased use of electronic controls. Limited.
[0007]
The present invention has been made in view of the above facts, and its technical problem is that there is no concern about waterproofing, weather resistance, dustproofing, etc., and maintenance work such as inspection, repair, and replacement can be easily performed. An electrical component storage structure for a construction machine is provided.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an opening formed on the outer surface of the cab adjacent to the entrance of the cab and having a lid that can be opened and closed, and the cab on the cab side of the opening. A construction characterized by comprising: an open storage space for electrical components; and an electrical component mounting base that is installed on the floor surface or the cab wall of the cab of the storage space and on which electrical components are mounted. It is an electrical component storage structure of a machine.
[0009]
Then, the electrical components are accommodated in the driver's cab without worrying about waterproofing, weather resistance, dust proofing, etc., and the lid is formed from the outside of the cab by forming an opening adjacent to the entrance / exit of the cab. The electrical component can be easily maintained through the opening.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an electrical component storage structure for a construction 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 hydraulic excavator that is a typical construction machine.
[0017]
Referring to FIG. 1, the hydraulic excavator generally indicated by reference numeral 2 includes a lower traveling body 4 and an upper revolving body 6 that is rotatably mounted on the lower traveling body 4. The upper swing body 6 is provided with a cab 8, a machine room 10, a bucket working device 12, and the like. The cab 8 is placed on the swing body frame 6 a of the upper swing body 6.
[0018]
Referring to FIGS. 2 to 4, the cab 8 is formed in a substantially cubic shape, and an entrance 8 b for an operator to get on and off is formed in the front half of the left panel 8 a that forms the left side surface. The doorway 8b is provided with a door 8c. A window sash or window glass is fitted in the upper part of the rear half of the left panel 8a. A window sash or window glass is also fitted into an upper portion of the rear panel 8d that forms the rear side surface of the cab 8. A window sash or window glass is also fitted to the front panel and the right panel, which are not shown. The cab 8 is formed with an open bottom. The cab 8 is placed on the floor plate 14 provided in the revolving body frame 6 a, and the floor surface F of the cab 8 is formed by the floor plate 14. In the cab 8, although not shown, a driver seat mounting base, a driver seat, a control device, and the like installed on the floor surface F are installed.
[0019]
An opening 18 having a side door 16 that is an openable / closable lid is formed in the lower portion of the rear portion of the left panel 8a adjacent to the entrance 8b. A storage space 20 for storing electrical components is formed inside the cab 8 of the opening 18. The accommodation space 20 is appropriately secured according to the size of the driver's cab 8, the interior equipment, etc., such as a driver seat mounting base or a space behind the driver seat (not shown). In the storage space 20, an electrical component stand 22, which is an electrical component mounting base, is erected on the floor F of the cab 8.
[0020]
The opening 18 is formed in a substantially rectangular shape on the left panel 8a. The peripheral edge of the opening 18 abuts the peripheral edge of the side door 16 when the side door 16 is closed, and the outer surface of the side door 16 and the left panel 8a is A flange portion 8e recessed in an L-shaped cross section is formed so as to be the same surface.
[0021]
The side door 16 is formed of a steel plate having an outer edge that is rectangular so as to fit into the opening 18 and bent in an L shape toward the inside of the opening 18. One rear edge extending vertically is attached to the left panel 8a via a pair of upper and lower known hinges 24, 24 so as to be swingable. A known appropriate latch 26 that can be locked when the side door 16 is closed is attached to the other edge. A seal rubber 28 having an elastic force is attached to a portion of the inner periphery of the side door 16 bent into an L shape by means such as adhesion so as to come into contact with the flange portion 8e of the opening 18.
[0022]
The electrical component stand 22 is formed of a stand main body 22a that is bent and formed into a L-shaped cross section by a steel plate, and a reinforcing plate 22b that is inserted and welded between two L-shaped sides. One surface of the L-shape is attached to the floor plate 14 with a bolt 30, and the other surface extending upward from the floor plate 14 forms an electrical component mounting surface E. The electrical component mounting surface E is formed in a rectangular shape that is substantially the same size as the opening 18, and is disposed facing the opening 18. Various electrical components 32 such as a controller and a relay are attached to the electrical component mounting surface E by means such as bolts (not shown), and these electrical components 32 have a wire harness for connection to an electrical circuit on the airframe side. 34 is connected.
[0023]
With reference to FIGS. 5-7, the form which equips the electrical component mounting base which is other embodiment with the slidable electrical component mounting plate is demonstrated.
[0024]
In this embodiment, the electrical component mounting base 36 is provided on the floor surface F of the floor board 14. The electrical component mounting base 36 includes a base plate 36a attached to the floor surface F with bolts, and a pair of mounting plates standing on the base plate 36a at predetermined intervals and extending toward the opening 18 respectively. 36b, 36b, which are integrally formed by welding steel plates. On each of the opposing surfaces of the mounting plates 36b, 36b, a rail member 38 having a cross-sectional channel shape (U-shaped) made of a steel plate is welded and mounted with the respective openings facing each other. In the groove of the rail member 38, a slide rail 40 formed in a cross-sectional channel shape (U shape) by an elastic material such as rubber or synthetic resin is attached by means such as adhesion. The slide rail 40 is formed with a protrusion 40 a that protrudes from three directions toward the center of the channel-shaped groove and extends in the extending direction of the slide rail 40. The electrical component mounting plate 42 is formed of a steel plate in a substantially rectangular shape and is passed between the opposed slide rails 40, 40. Each of the edge portions is slidable and elastic by the above-described three protrusions 40a. Is held between the two. The electrical component mounting plate 42 is also fixed so that it cannot slide by fixing a plate member 42a provided at the end on the opening 18 side to the electrical component mounting base 36 with a bolt (not shown).
[0025]
Various electrical components 44 such as a controller and a relay are attached to the electrical component mounting plate 42 by means such as bolts (not shown), and the connector 48 of the wire harness 46 is connected to the electrical circuit on the fuselage side. 42 are gathered on the side of the opening 18.
[0026]
With reference to FIGS. 2-7, the effect | action of the electrical equipment storage structure of a construction machine as mentioned above is demonstrated.
[0027]
(1) Waterproof, weatherproof, dustproof:
Various electrical components 32 (44) are accommodated in the storage space 20 in the cab 8, and the openable side door 16 having a seal member 28 is provided in the opening 18 that opens into the storage space 20. . Therefore, there is provided an electrical component storage structure that does not have to worry about rainwater, dust, and the like, and does not have to worry about temperature, humidity, and the like.
[0028]
(2) Maintenance:
Various electrical components 32 (44) accommodated in the storage space 20 of the cab 8 can be easily accessed by opening the side door 16 and being close to the entrance 8b outside the cab 8. Maintenance work such as replacement can be performed. Further, by using the slidable electrical component mounting plate 42 (FIG. 6), the connector 48 is removed, the slide fixing bolt is removed, and the electrical component mounting plate 42 is pulled out of the cab 8, so that all the various electrical components 44 are provided. Can be taken out easily.
[0029]
(3) Installation space:
Since the dead space such as the driver's seat mounting base and the driver's seat rear portion can be effectively used as the accommodating space 20 for the various electrical components 32 (44), the problem that the electrical component installation space is limited is also eliminated. Furthermore, by using the slidable electrical component mounting plate 42, more electrical components can be accommodated, and an increase in electrical components can be accommodated.
[0030]
As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications or corrections may be made within the scope of the present invention, for example, as described below. It is something that can be done.
[0031]
(1) Electrical equipment installation location:
In the embodiment of the present invention, the electrical component mounting base 22 (36) is installed on the floor F, but as shown in FIG. 8, the electrical component mounting base 220 (corresponding to the electrical component mounting base 22). On the cab wall, or as shown in FIG. 9, the electrical equipment mounting base 361 (corresponding to the electrical equipment mounting base 36) is placed on the cab wall, or as shown in FIG. 10, the electrical equipment mounting base 362 (electrical equipment). You may install in the floor surface F and the cab wall. Further, the electrical component mounting base may be configured by the members themselves that constitute the cab 8. 8 to 10, substantially the same parts as those in FIGS. 4 and 7 are denoted by the same reference numerals.
[0032]
(2) Opening lid:
In the embodiment of the present invention, the side door 16 that is a lid of the opening 18 is attached to the left panel 8 a of the cab 8 by a pair of hinges 24, 24 and a latch 26. It may replace with a bolt instead. Or you may attach the whole side door to the panel 8a of the cab 8 with the volt | bolt.
[0034]
【The invention's effect】
According to the electrical equipment storage structure of a construction machine configured according to the present invention, there is no concern about waterproofing, weathering, dustproofing, etc., and maintenance work such as inspection, repair, and replacement can be easily performed. An electrical component storage structure for a construction machine is provided.
[Brief description of the drawings]
FIG. 1 is a left side view of a hydraulic excavator that is a typical construction machine equipped with a storage structure for electrical components constructed according to the present invention.
FIG. 2 is a perspective view of the cab of FIG. 1 as viewed from the left rear.
3 is a side view of the opening of the electrical component housing structure as viewed in the direction of arrow A in FIG. 2; Illustration of the lid is omitted.
4 is a cross-sectional view as seen in the direction of arrows BB in FIG. 3;
5 is a perspective view showing another embodiment of the cab of FIG. 1 as viewed from the left rear. FIG.
6 is a perspective view of an electrical component mounting plate to which the electrical component shown in FIG. 5 is mounted.
7 is a view seen from the side of the opening showing a mounting state of the electrical component mounting plate shown in FIG. 6;
FIG. 8 is a view showing another embodiment corresponding to FIG. 4;
FIG. 9 is a view showing another embodiment corresponding to FIG. 7;
FIG. 10 is a view showing still another embodiment corresponding to FIG.

Claims (1)

An opening formed on the outer surface of the cab adjacent to the entrance of the cab and having a lid that can be opened and closed, and a storage space for electrical components that are opened in the cab inside the cab of the opening. And an electrical component mounting structure that is installed on the floor surface of the cab or the cab wall of the storage space and on which electrical components are mounted.

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