JP2011231593A - Electric component arranging structure of construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve maintainability during a continuity check and others of each connector connected to a harness to apply an electric current to each electric component installed at various locations inside of a cab.SOLUTION: A figure shows a part of a cab inside. A connector group 26 comprising many connectors, which connect a frame side harness 24 and a cab side harness 25, is gathered in a connector fixation bracket 27 to be installed. The connector fixation bracket 27 is installed in removable manner to a bracket bearing member 28. Therefore a continuity check and maintenance for each connector of the connector group 26 can be conducted by selecting an intended connector from the connector group 26 after removing the connector fixation bracket 27 from the bracket bearing member 28. This arranging structure makes maintenance for each connector of the connector group 26 more efficient.

Description

  The present invention relates to an electrical equipment arrangement structure for construction machines such as a hydraulic excavator and a hydraulic crane, and more particularly to an electrical equipment arrangement structure in a cab (in the cab) of a construction machine.

  Generally, a hydraulic excavator as a construction machine includes a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work device such as an excavator that is provided on the upper revolving body so as to be able to be raised and lowered. It is roughly constituted by. A cab that constitutes a cab is provided on the frame of the upper swing body.

  A cab for a construction machine according to this type of prior art includes a cab box having an upper surface portion, a front surface portion, a rear surface portion, and left and right side portions, and one of the left and right side portions of the cab box. And a door that opens and closes an entrance through which an operator gets on and off, and an air conditioner (air conditioner) that is provided in the cab box and supplies conditioned air into the room while taking in outside air. Furthermore, various electrical components such as control devices, instruments, lamps, and fuses are arranged in the cab. In addition, these electrical components and air conditioners are distributed in a console provided on the left and right side surfaces of the seat on which the driver sits, in a side panel of the cab, and the like. Therefore, in order to electrically connect these electrical components and air conditioners, the harness on the cab side and the harness on the frame side of the cab box are connected by a number of connectors.

  In addition, in order to improve the wiring properties of the harness and the maintainability of the electrical components, the pedestal for storing the electrical components such as the control device is pulled out to the outside from the storage position provided in the space below the seat and the storage position. A technique of an electrical component arrangement structure configured to be freely slidable with respect to an open position is also disclosed (see, for example, Patent Document 1). According to this technology, when the pedestal containing the electrical components is slid into the storage position below the seat, the electrical component side connector and the connection device side connector are automatically connected, and the pedestal is connected to the lower portion of the seat. When it is slid out from the storage position, the electrical component side connector and the connected device side connector are automatically cut off. This eliminates the need to attach and detach both connectors before and after maintenance, and prevents forgetting to connect both connectors after maintenance, thereby contributing to further improvement in maintainability.

JP 2002-242225 A

  However, since the various electrical components arranged in various places in the cab room are connected to the electrical component side connector and the connected device side connector via individual harnesses or a plurality of harnesses, The connectors are scattered and arranged at various locations in the cab chamber. Therefore, when conducting a continuity test of an electrical component, it is necessary to search for a connector corresponding to the electrical component to be inspected, so that the maintainability during the continuity test is not good. Further, the technique disclosed in Patent Document 1 has good maintainability in that the connector can be automatically attached / detached in response to the storage / drawing of the pedestal in which the electrical components are stored in the lower part of the seat. Since various types of connectors are scattered and arranged, it is necessary to search for a necessary connector and perform an attaching / detaching operation.

  Therefore, there are technical issues to be solved in order to improve the maintainability at the time of continuity inspection of each connector connected to the harness that sends current to various electrical components arranged in various places in the cab room. The present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is an electrical component of a construction machine in which various electrical components provided in the cab chamber are electrically connected by a number of harnesses. In the arrangement structure, the connectors that connect the frame side harness and the cab side harness in the cab chamber are grouped together as a connector group, and the connector group is held together by a connector fixing bracket. An electrical component disposition structure for a construction machine is provided.

  According to this configuration, the connector group that is frequently touched when conducting a continuity test between the frame-side harness and the cab-side harness that electrically connect the electrical components in the cab room is concentrated in one place by the connector fixing bracket. ing. This makes it possible to shorten the work time for the continuity test.

  The invention according to claim 2 is characterized in that the connector fixing bracket is detachably attached to a bracket support member for supporting the cab body. An arrangement structure is provided.

  According to this configuration, the connector fixing bracket that fixes the connector group is detachably attached to the bracket support member of the cab body. Thereby, since it is possible to easily access each connector during maintenance work, workability during maintenance can be further improved.

  According to the first aspect of the present invention, the connector group for connecting the frame side harness and the cab side harness is gathered at one place by the connector fixing bracket, so that it is possible to shorten the work time for continuity inspection and the like. it can. Accordingly, it is possible to further improve the maintainability in the continuity inspection and the like.

  According to the invention of claim 2, since the connector fixing bracket for fixing the connector group is detachably attached to the bracket support member of the cab body, in addition to the effect of the invention of claim 1, Since it is possible to easily access each connector during maintenance work, workability during various maintenance can be further improved.

The side view of the hydraulic excavator as a construction machine to which this invention is applied. FIG. 2 is a perspective view showing in detail the inside of the cab of the excavator shown in FIG. The perspective view which expanded and displayed the A section of FIG. The side view of the connector part in FIG.

  The present invention is provided in the cab room in order to achieve the object of improving the maintainability at the time of continuity inspection of each connector connected to a harness for passing current to various electrical components arranged in various places in the cab room. In the electrical equipment arrangement structure of a construction machine in which various electrical equipments are electrically connected by a number of harnesses, the connectors for connecting the frame side harness and the cab side harness in the cab room are combined into a connector group. The connector group is realized by providing an electrical component arrangement structure for a construction machine, wherein the connector group is held together by a connector fixing bracket.

  Hereinafter, a case where an electrical component arrangement structure for a construction machine according to an embodiment of the present invention is applied to a hydraulic excavator will be described as an example, and a preferred example will be described in detail with reference to FIGS.

  FIG. 1 is a side view of a hydraulic excavator as a construction machine to which the present invention is applied. In FIG. 1, the excavator 10 has an upper swing body 13 mounted on a lower traveling body 11 via a swing mechanism 12 so as to be rotatable. In addition to the cab (operator's cab) 14 and the building 18 being provided on the upper swing body 13, a boom 15 is attached to the front center portion by a boom cylinder 15a so as to be lifted and lowered. An arm 16 is attached to the tip of the boom 15 by an arm cylinder 16a so as to be rotatable up and down, and a bucket 17 is attached to the tip of the arm 16 so as to be movable by a bucket cylinder 17a.

  Although not particularly shown in the building 18 of the upper swing body 13, a battery, a hydraulic pump for driving the work machine, an engine, various devices, and auxiliary devices are disposed, and the boom 15 and the arm 16 are disposed. , And a power unit for driving the bucket 17 and the like by respective cylinders are housed. Further, the lower traveling body 11 is configured to travel the hydraulic excavator 10 by rotating the crawler 20 by the traveling motor 19.

  FIG. 2 is a perspective view showing in detail the inside of the cab 14 of the excavator 10 shown in FIG. FIG. 3 is an enlarged perspective view of a portion A in FIG. Further, FIG. 4 is a side view of the connector portion in FIG.

  As shown in FIG. 2, a driver's seat 21 is installed inside the cab 14, and an operation lever 22, a joystick 23, and the like are disposed at positions around the driver's seat 21 that are easy to operate. Further, in order to electrically connect various electrical components, the frame side harness 24 and the cab side harness 25 are connected by a connector group 26. Although not shown in detail in the figure, the connector group 26 is a group of a plurality of connectors for connecting various electrical components.

  That is, as shown in the enlarged view of part A in FIG. 3, the connector group 26 that connects the frame-side harness 24 and the cab-side harness 25 is gathered by a single connector fixing bracket 27 inside the cab body 14. . The connector fixing bracket 27 is detachably attached to a bracket support member 28 on the side wall of the cab body 14a. Further, the connector fixing bracket 27 is configured so that it can be easily detached from the bracket support member 28. Therefore, when performing maintenance such as investigating a failure of the connector group 26 or conducting a continuity test, the connector fixing bracket 27 is provided. Can be easily accessed.

  More specifically, as shown in FIG. 4, a connector group 26 composed of a large number of connectors for connecting the frame side harness 24 and the cab side harness 25 is assembled and attached to a connector fixing bracket 27. It has become. Further, the connector fixing bracket 27 is detachably attached to the bracket support member 28. Therefore, when conducting continuity inspection and maintenance of each connector of the connector group 26, after removing the connector fixing bracket 27 from the bracket support member 28, a desired connector is selected from the connector group 26 and maintenance such as continuity inspection is performed. Just do it. As a result, it is possible to improve efficiency when maintaining each connector of the connector group 26.

  As described above, according to the electrical equipment disposition structure for a construction machine according to the present invention, each connector for connecting the frame side harness 24 and the cab side harness 25 is a connector group 26 in the cab 14 of the construction machine. The connector group 26 is held together by a connector fixing bracket 27. Further, the connector fixing bracket 27 is detachably attached to a bracket support member 28 for supporting the cab body 14a.

  In this way, by consolidating the connector group 26, which is frequently touched when conducting a continuity test of a harness for electrically connecting electrical components, with a connector fixing bracket 27, the connector group 26 is integrated into one place, thereby performing a continuity test or the like. Time can be shortened. Moreover, since the connector fixing bracket 27 for fixing the connector group 26 is detachably attached to the bracket support member 28 of the cab body 14a, each connector can be easily accessed during maintenance work. Workability at the time of maintenance can be further improved.

  Although specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Naturally extends to the modified ones.

  The electrical equipment arrangement structure of the construction machine according to the present invention is not limited to the construction machine and can be effectively used to improve the wiring property of the harness connecting the electrical equipment in other various vehicles. .

DESCRIPTION OF SYMBOLS 10 Hydraulic excavator 11 Lower traveling body 12 Turning mechanism 13 Upper turning body 14 Cab 14a Cab body 15 Boom 15a Boom cylinder 16 Arm 16a Arm cylinder 17 Bucket 17a Bucket cylinder 18 Building 19 Crawler 20 Caterpillar 21 Driver's seat 22 Operation lever 23 Joystick 24 Frame side harness 25 Cab side harness 26 Connector group 27 Connector fixing bracket 28 Bracket support member

Claims (2)

In the electrical equipment arrangement structure of the construction machine in which various electrical equipment provided in the cab room is electrically connected by a number of harnesses,
The connectors for connecting the frame side harness and the cab side harness in the cab room are grouped together as a connector group, and the connector group is collected and held in a connector fixing bracket. Electrical equipment arrangement structure for construction machinery. 2. The electrical equipment disposition structure for a construction machine according to claim 1, wherein the connector fixing bracket is detachably attached to a bracket support member for supporting the cab body.

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