JP2016035151A - Electric component mounting structure of construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach a plurality of electric components to an inner side of a cab back surface.SOLUTION: An inner panel 12 is attached to an inner upper portion of a rear panel 11 constituting a cab back surface, a soundproofing and heat-proofing insulation 13 is attached to a lower portion thereof, and an electric component plate 15 to which a plurality of electric components E2 are sub-installed is superimposed on the insulation 13 from a cab inner side, and is attached to the inner panel 12 and the rear panel 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electrical component mounting structure for mounting electrical components to a cab (cab) in a construction machine such as an excavator.

  The background art will be described with reference to FIGS.

  As shown in FIG. 7, the excavator includes a crawler-type lower traveling body 1 and an upper revolving body 2 that is rotatably mounted on the lower traveling body 1, and the upper revolving body 2 has a work attachment and a cab 3 (not shown). Is installed.

  Hereinafter, the position of the cab 3 will be referred to as the left front portion of the upper swing body 2, and the “front-rear” and “left-right” directionality of each portion will be referred to with reference to the cab position.

  FIG. 8 shows a schematic configuration and a cab arrangement of the upper frame 4 serving as a base of the upper swing body 2.

  The upper frame 4 has a left side deck 5 on the left side as a part thereof, and the cab 3 is mounted on the left side deck 5 in a front portion on the left side of the upper frame.

  7 and 8, reference numeral 6 denotes a driver's seat provided in the cab 3.

  Conventionally, in a shovel equipped with the cab 3 as described above, a technique for attaching a relay, an expansion converter, a camera converter, and other electrical components using a space around the cab is known.

  For example, Patent Document 1 discloses a technique for attaching a plurality of electrical components 7 to the outside of the back surface of a cab as shown in FIG.

Japanese Patent No. 4248373

  According to the electrical equipment mounting structure described in Patent Document 1, the space of the equipment arranged behind the cab is eroded by the electrical equipment 7, which is disadvantageous in terms of equipment layout and requires waterproof measures. Problems such as increased costs arise.

  As a solution to this problem, it is conceivable to install electrical components inside the back of the cab.

  However, since the insulation (elastic sheet such as sponge) for soundproofing and heatproofing is provided inside the cab (usually the lower part), it is not possible to secure a sufficient electrical component mounting space.

  Moreover, since the lower part inside the back of the cab is located behind the driver's seat 6, if the electrical components are individually assembled in this lower space, the driver's seat 6 becomes in the way and it becomes difficult to assemble.

  Therefore, the present invention provides an electrical component mounting structure for a construction machine that can easily assemble a plurality of electrical components inside the back of a cab.

  As a means for solving the above-mentioned problems, in the present invention, there is provided an electrical component mounting structure for a construction machine in which a soundproof and heatproof sheet-like insulation is provided on the inner surface of the rear panel of the cab, and a plurality of electrical components are mounted. And the plate mounting means for mounting the electrical component plate on the insulation from the inside of the cab.

  According to this configuration, since the electrical component plate on which a plurality of electrical components can be mounted is mounted on the insulation from the inside of the cab, the insulation space, which has been a dead space in the past, is utilized as the electrical component space. A sufficient electrical component space can be secured inside the back surface.

  In addition, since a plurality of electrical components are attached to the electrical component plate in advance, and so-called sub-assembly is possible in which the electrical component plate is mounted on the inner side of the cab, the electrical component is also mounted on the lower portion of the cab on the rear side of the driver's seat. Can be easily assembled.

  In addition, since the insulation can be pressed and restrained by the electrical component plate, the soundproofing effect of the insulation can be enhanced.

  In this case, it is desirable to provide a bracket as the plate mounting means in a portion of the rear panel covered with the insulation so as to pass through the insulation and be exposed to the inside of the cab.

  According to this configuration, it is not necessary to reduce the area of the insulation for mounting the electrical component plate, and the original soundproofing and heatproofing functions can be secured.

  Further, in the configuration of claim 1 or 2, an inner panel as a reinforcing member for resisting a lateral load acting when the machine falls is provided above the insulation inside the rear panel. It is desirable to provide an electrical component individual mounting means for individually mounting a plurality of electrical components and a mounting hole as the plate mounting means for mounting the upper end portion of the electrical component plate.

  According to this configuration, the reinforcing inner panel can be used both as a member for individually mounting an electrical component other than the electrical component mounted on the electrical component plate and a member for mounting the upper end of the electrical component plate. First, it is possible to expand the electrical component space inside the back of the cab together with the electrical component plate, and to assemble more electrical components.

  Secondly, since the electrical component space is formed separately on the upper and lower sides, for example, the standard electrical component is added to the upper space (inner panel) according to the machine type, application, user request, etc. It is possible to assemble electrical components such as assembling optional electrical components in the lower space (electrical component plate).

  Thirdly, since the inner panel can be used as the mounting member on the upper part of the electrical component plate, the electrical component plate mounting structure can be simplified.

  According to the present invention, it is possible to easily assemble a plurality of electrical components inside the back surface of the cab.

It is a partially cutaway perspective view of a cab showing an embodiment of the present invention. It is a perspective view of the state which assembled | attached the electrical component and the electrical component plate from the state of FIG. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 4 is an enlarged view of a portion surrounded by a broken line in FIG. 3. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 4. 1 is a schematic side view of an excavator to which the present invention is applied. It is a partially notched top view of the shovel shown including a well-known technique.

  An embodiment of the present invention will be described with reference to FIGS.

  The embodiment is applied to an excavator.

  In the embodiment, the upper swing body is mounted on the crawler type lower traveling body, and the excavator is configured by attaching the work attachment and the cab 3 to the upper swing body and the conventional technique shown in FIGS. The same.

  As shown in FIGS. 1 to 4, left and right rear pillars 8, 9 are erected on the back side of the cab 3, and a rear window 10 is provided above the rear pillars 8, 9. A rear panel 11 (see FIG. 6 for the entire panel) is attached below.

  The rear panel 11 is provided with an inner panel 12 as a reinforcing member for resisting a lateral load applied to the left rear pillar 8 when the machine falls down, and a soundproofing and heatproofing made of an elastic body such as a sponge at the lower part. Insulation 13 is attached.

  As shown in FIG. 6, the inner panel 12 has reinforcing edge portions 12 a and 12 b on both upper and lower sides, and the both side reinforcing edge portions 12 a and 12 b are welded to the inner surface of the rear panel 11.

  The inner panel 12 is provided with a large number of electrical component mounting holes 14 in almost the entire area. For example, a plurality of electrical components (see FIG. 6) E1 as standard equipment are connected to the inner panel 12 through the electrical component mounting holes 14. Mounted individually.

  The insulation 13 is formed in a square sheet shape, and is adhered to the inner surface over substantially the entire width of the rear panel 11.

  A rectangular electrical component plate 15 is attached to the bottom of the rear panel 11 so as to overlap the insulation 13 from the inside of the cab.

  The electrical component plate 15 is formed with a width dimension slightly smaller than the insulation 13 and a height dimension larger than the insulation 13, and as shown in FIGS. It is attached so that the upper half part protrudes above the insulation, covering the whole in the height direction and covering the whole.

  The plate 15 may be set to a dimension that covers the entire width portion of the insulation 13.

  As with the inner panel 12, the electrical component plate 15 is provided with a number of electrical component mounting holes 16 (see FIG. 3). For example, a plurality of options added depending on the type and application of the machine, user's request, etc. The electrical component E <b> 2 is attached to the electrical component plate 15 through the electrical component mounting hole 16.

  The electrical component mounting holes 16 are desirably provided with a margin so that the number and position of the electrical components E2 to be mounted can be appropriately selected.

  The electrical component plate 15, the rear panel 11, and the inner panel 12 are provided with plate attachment means for attaching the electrical component plate 15 to the inner side of the rear panel.

  That is, as shown in FIG. 3, a plate-side upper mounting hole 17 is provided at the upper end of the electrical component plate 15, and an inner panel-side mounting hole 18 is provided at the lower end of the inner panel 12 one by one. It is bolted to the panel 12 (19 in FIG. 6 is a bolt for attaching this plate upper part).

  In addition, a pair of left and right plate-side lower mounting holes 20 are provided at the lower end of the electrical component plate 15, while a pair of left and right U-shaped portions are located at the bottom of the rear panel 11 and on the back side of the lower end of the insulation 13. The bracket 21 is attached.

  As shown in an enlarged view in FIG. 5, the bracket 21 is attached with a notch 22 provided in the bracket attachment portion of the insulation 13 so as to penetrate the insulation 13 and the tip is exposed inside the cab. .

  A screw hole 21a is provided at the exposed bracket tip, and the bolt 23 shown in FIG. 6 passes through the plate-side lower mounting hole 20 and is screwed into the screw hole 21a, whereby the plate lower part is attached to the inner panel 12.

  The plate-side lower mounting hole 20 is formed as a notch having an opening on the lower side, and the plate-side mounting hole 20 is locked to the bolt 23 from above with the bolt 23 temporarily fastened to the bracket 21 first. The electrical component plate 15 can be temporarily placed.

  In this way, the electrical component plate 15 is attached to the inner side of the cab in a state where the electrical component plate 15 overlaps the insulation 13 from the inside of the cab and is fixed vertically.

  According to this electrical component mounting structure, the following effects can be obtained.

  (I) Since the electrical component plate 15 to which a plurality of electrical components E2 are mounted is mounted on the inner surface of the rear panel in a state of being superimposed on the insulation 13, the space of the insulation 13 that has been a dead space in the past is utilized as the electrical component space. In addition, a sufficient electrical component space can be secured inside the back of the cab.

  (II) Since a plurality of electrical components E2 are attached in advance to the electrical component plate 15 and the electrical component plate 15 is attached to the inner side of the cab, a so-called sub-assembly is possible. However, the electrical component E2 can be easily assembled.

  (III) Since the electrical component plate 15 is attached to the insulation 13 in an overlapping manner, the insulation component 13 can be pressed and restrained by the electrical component plate 15, thereby enhancing the soundproofing effect.

  (IV) Since the bracket 21 serving as the plate attachment means is provided in a portion of the rear panel 11 covered with the insulation so as to pass through the insulation 13 and exposed to the inside of the cab, the area of the insulation 13 is electrically There is no need to reduce the size for mounting the product plate 15, and the sound insulation and heat insulation functions inherent to the insulation can be secured.

  (V) An inner panel 12 is provided above the insulation 13 inside the rear panel 11 as a reinforcing member for resisting a lateral load that acts when the machine overturns. A plurality of electrical components E1 are individually attached to the inner panel 12. In other words, the reinforcing inner panel 12 is individually attached to the electrical component E1 other than the electrical component E2 attached to the electrical component plate 15 because the upper end of the electrical component plate 15 is attached. Since the member and the member for attaching the upper end portion of the electrical component plate 15 are combined, first, the electrical component space inside the cab rear surface is expanded together with the electrical component plate 15 to increase the number of electrical components. The product can be assembled.

  Secondly, since the electrical component space is divided into upper and lower sides, the standard electrical component E1 as described above is used in the upper space (inner panel 12) for machine types and applications, user requests, etc. As a result, the electrical components E1 and E2 can be grouped, for example, the optional electrical component E2 to be added to the lower space (electrical component plate 15).

  Third, since the inner panel 12 can be used as an attachment member at the upper part of the electrical component plate, the attachment structure of the electrical component plate 15 can be simplified.

Other embodiments
(1) Although the upper part of the electrical component plate 15 is attached to the inner panel 12 in the above embodiment, the upper part of the plate may be attached to the inner surface of the rear panel 11 below the inner panel 12 via a bracket. .

  (2) In the above embodiment, the bracket 21 for attaching the lower part of the electrical component plate 15 to the rear panel 11 is configured to pass through the insulation 13 and be exposed to the inside of the cab, but from the insulation 13 in the rear panel 11. Alternatively, the bracket 21 may be attached at a lower position.

3 Cab 11 Rear panel 12 Inner panel E1 Electrical component attached to the inner panel 13 Insulation 14 Electrical component mounting hole on the inner panel (electrical component individual mounting means)
15 Electrical component plate 16 Electrical component mounting hole E2 Electrical component mounted on electrical component plate 17 Plate side upper mounting hole 18 as plate mounting means 18 Inner panel side mounting hole 19 Bolt for electrical component plate upper mounting 20 Same plate Side lower mounting hole 21 Same as above, Bracket 22 Notch for exposing the bracket to the inside of the cab 23 Bolt for mounting the lower part of the electrical component plate

Claims (3)

  An electrical component mounting structure for a construction machine in which a sheet-like insulation for soundproofing and heatproofing is provided on the inner surface of the rear panel of the cab, and an electrical component plate on which a plurality of electrical components are mounted, and the electrical component plate on the inside of the cab A mounting structure for mounting electrical equipment on a construction machine, comprising: plate mounting means for mounting by overlapping with the insulation.   2. The construction machine according to claim 1, wherein a bracket as the plate mounting means is provided in a portion of the rear panel covered with the insulation so as to penetrate the insulation and be exposed to the inside of the cab. Electrical equipment mounting structure.   Inside the rear panel, above the insulation, an inner panel is provided as a reinforcing member to counter the lateral load acting when the machine falls, and an electrical component for individually mounting a plurality of electrical components on the inner panel is provided. 3. The electrical equipment mounting structure for a construction machine according to claim 1 or 2, further comprising a mounting hole as the plate mounting means for mounting an individual product mounting means and an upper end portion of the electrical component plate.

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