JP6142556B2 - Controller mounting structure - Google Patents

Description

  The present invention relates to a controller mounting structure provided on an upper swing body of a construction machine.

  In a standard hydraulic excavator (construction machine), a controller is often mounted in the cab. However, a controller may be arranged outside the cab. For example, when a controller cannot be mounted in the cab due to arrangement restrictions, or when a controller other than the controller in the cab is added, the controller is arranged outside the cab.

  In the hydraulic excavator described in Patent Document 1, the controller is disposed behind the cab. [Solution] in [Summary] of Patent Document 1 has the following description (the reference numerals in Patent Document 1 are given parentheses). “A utility room (18) is provided between the machine room (17) and the cab (6), and an engine controller (33) is provided in the utility room (18).”

JP 2007-170129 A

  The engine controller (33) (controller) described in Patent Document 1 is attached to the front partition cover (12). By providing this front partition cover, the number of parts and the cost increase.

  Therefore, the present invention provides a controller mounting structure that can suppress the number of parts and the cost and can securely fix the controller to the swivel frame even though the controller is arranged behind the cab. For the purpose.

  The controller mounting structure of the present invention is provided on the upper swing body. The upper revolving structure includes a revolving frame and a cab attached to the revolving frame. The controller mounting structure includes a bracket that is fixed to the revolving frame and is disposed behind the cab, an air cleaner that is fixed to the bracket, and a controller that is fixed to the bracket. The controller is disposed on the opposite side of the air cleaner with respect to the bracket.

  With the above configuration, the number of parts and the cost can be suppressed and the controller can be securely fixed to the swivel frame despite the configuration in which the controller is disposed behind the cab.

It is a figure which shows an upper revolving body. FIG. 2 is an enlarged view around a controller mounting structure 40 shown in FIG. 1. FIG. 3 is a view taken along arrow III shown in FIG. 2. It is IV arrow line view shown in FIG. It is a perspective view of the controller attachment structure 40 shown in FIG. (A)-(c): It is a figure which shows arrangement | positioning of the connector connection part 53 with respect to the bracket 43 shown in FIG.

  With reference to FIGS. 1-6, the construction machine provided with the controller attachment structure 40 is demonstrated. This construction machine is a machine that performs work such as excavation, and is, for example, a work vehicle, such as a hydraulic excavator. The construction machine includes a lower traveling body (not shown) and an upper swing body 1. The lower traveling body is a portion that causes the construction machine to travel. The lower traveling body is, for example, a crawler type.

  The upper swing body 1 is mounted on the lower travel body so as to be able to swivel with respect to the lower travel body. As shown in FIG. 1, the upper swing body 1 includes a swing frame 11, a cab 13, a counterweight 15, a cover 17, and devices installed inside the cover 17.

  The turning frame 11 is a structure attached to the lower traveling body so as to be turnable. A cab 13 and a counterweight 15 are attached to the revolving frame 11. Here, the side on which the cab 13 is disposed in the turning frame 11 is referred to as “front side X1” in the “front-rear direction X”. The side on which the counterweight 15 is disposed in the turning frame 11 is referred to as a “rear side X2” in the front-rear direction X. A direction orthogonal to the front-rear direction X and parallel to the horizontal direction is defined as a “lateral direction Y”. In addition, the vertical direction (direction orthogonal to the front-rear direction X and the horizontal direction Y) is “vertical direction Z”, the upper side is “upper Z1”, and the lower side is “lower Z2”.

  The cab 13 (cab) is attached (for example, fixed) to the front X1 portion of the revolving frame 11.

  The counterweight 15 is a weight fixed to the rear X2 portion of the turning frame 11.

  The cover 17 is a member that covers various devices. The cover 17 covers various devices so that water (rain water, car wash water, etc.), sand, dust or the like does not enter the cover 17. The cover 17 is disposed on the upper side Z <b> 1 of the revolving frame 11. The cover 17 is disposed on the rear side X2 of the cab 13. The cover 17 may be disposed beside the cab 13 (outside in the lateral direction Y). The cover 17 is fixed (directly or indirectly fixed) to the revolving frame 11. The interior of the cover 17 is partitioned into a plurality of chambers. Inside the cover 17, there are a machine room 20 and an air cleaner room 30.

  The machine room 20 is a portion (section) in which the engine 21 and the like are disposed. The machine room 20 is disposed on the rear side X2 from the cab 13. The machine room 20 is disposed on the front side X1 with respect to the counterweight 15. Inside the machine room 20, for example, an engine 21, a cooling fan 23, a hydraulic pump (not shown), and the like are arranged.

  The air cleaner chamber 30 is a portion (section) in which the air cleaner 47 and the like are disposed. The air cleaner chamber 30 is disposed on the rear side X2 of the cab 13. The machine room 20 is disposed on the rear side X <b> 2 of the air cleaner room 30. The machine room 20 may be disposed beside the air cleaner room 30 (outside in the lateral direction Y). The air cleaner chamber 30 is isolated from the machine chamber 20. The air cleaner chamber 30 is disposed next to the machine chamber 20. The air cleaner chamber 30 is disposed adjacent to the back surface (surface of the rear side X2) of the cab 13. No partition plate is provided between the back surface of the cab 13 and the air cleaner chamber 30 (there is no “front partition cover (12)” in Patent Document 1 described above). A controller mounting structure 40 is provided in the air cleaner chamber 30.

  The controller attachment structure 40 is a structure in which the controller 50 is attached to the bracket 43 for fixing the air cleaner 47. The controller mounting structure 40 includes a support column 41, a bracket 43, an air cleaner 47, and controller peripheral devices 50, 61, and 65.

  As shown in FIG. 5, the column 41 is a member (column) that supports the bracket 43. The support column 41 is fixed (fixed directly or indirectly) to the revolving frame 11. The support column 41 is disposed between the revolving frame 11 shown in FIG. 1 and the upper surface (the surface of the upper side Z1) of the cover 17. As shown in FIG. 5, the support | pillar 41 is rod shape, for example, for example, two are provided (3 or more may be sufficient).

  The bracket 43 is a member to which the air cleaner 47 and the controller 50 are attached as shown in FIG. The bracket 43 is disposed behind the cab 13 (outside the cab 13 and on the rear side X2 from the cab 13). As shown in FIGS. 3 to 5, the bracket 43 has a plate shape, for example, a rectangular shape, and is long in the lateral direction Y, for example. The bracket 43 is fixed to the turning frame 11 shown in FIG. The bracket 43 is fixed to the revolving frame 11 via the support column 41. As shown in FIGS. 3 to 5, the bracket 43 is fixed to the support column 41 at both ends in the lateral direction Y, for example. The bracket 43 and the support column 41 are fixed with, for example, a bolt or the like. The bracket 43 may be directly fixed to the revolving frame 11. As shown in FIG. 2, a gap is provided between the bracket 43 and the cover 17. A gap is provided between the bracket 43 and the revolving frame 11. As shown in FIGS. 2 and 5, the bracket 43 includes, for example, a flat portion 44 and a bent portion 45.

The thickness direction of the flat portion 44 is the front-rear direction X.
The bent portion 45 is a portion bent with respect to the flat portion 44. The bent portion 45 protrudes from, for example, the upper Z1 end of the flat portion 44, for example, to the front side X1.

  The air cleaner 47 is a device that filters air sucked into the engine 21 shown in FIG. The air cleaner 47 is fixed to the bracket 43. As shown in FIG. 2, the air cleaner 47 is fixed to the bracket 43 by bolts or the like, for example. The air cleaner 47 has a cylindrical shape, for example. For example, the air cleaner 47 is arranged so that the lateral direction Y is the axial direction. 3 to 5, the air cleaner 47 is indicated by a two-dot chain line (imaginary line).

  As shown in FIG. 1, the controller peripheral devices 50, 61, and 65 include a controller 50, a harness 61, and a case 65.

  The controller 50 is a device that controls various devices, and is a device that performs input / output and calculation of electrical signals. The equipment connected to the controller 50 is, for example, the engine 21, operating means (operating lever, operating switch, etc.) operated by the operator of the construction machine, hydraulic equipment (valve, pump, motor, etc.), power supply, outside the construction machine Communication apparatus (for example, a communication apparatus for downloading software to the controller 50). For example, the controller 50 controls the operation of a hydraulic device (valve or the like) in accordance with the operation of the operator of the construction machine. For example, the controller 50 is an engine controller that controls the operation of the engine 21 (fuel injection amount, rotation speed, etc.).

  The controller 50 is fixed to the bracket 43 as shown in FIG. For example, the controller 50 is indirectly fixed to the bracket 43 via the case 65. For example, the controller 50 is arranged so that a gap is formed between the controller 50 and the bracket 43. The controller 50 may be directly fixed to the bracket 43. The controller 50 is disposed on the opposite side of the air cleaner 47 with respect to the bracket 43. When the air cleaner 47 is fixed to the rear X2 surface of the bracket 43, the controller 50 is fixed to the front X1 surface of the bracket 43 (this arrangement may be reversed, for example). As shown in FIG. 4, the controller 50 (at least a part of the controller 50) is disposed at a position overlapping the air cleaner 47 when viewed from the direction (front-rear direction X) connecting the controller 50 and the air cleaner 47.

Since the controller 50 is disposed in the air cleaner chamber 30 isolated from the machine room 20 shown in FIG. 1, the controller 50 is not easily affected by the machine room 20. The influence from the machine room 20 is, for example, an influence due to a temperature change, vibration, or the like. It is the influence by heat.
Further, since the controller 50 is disposed outside the cab 13 (air cleaner chamber 30), the cab 13 can be easily replaced. More specifically, the cab 13 can be replaced while the controller 50 is attached to the bracket 43 (while being placed in the air cleaner chamber 30).
Moreover, since the controller 50 is arrange | positioned just behind the cab 13 (air cleaner chamber 30), the length of the electric wire (for example, harness 61) which connects the apparatus arrange | positioned in the cab 13 and the controller 50 can be suppressed. The devices arranged in the cab 13 are operation means operated by an operator of the construction machine, a controller other than the controller 50, and the like.
Moreover, since the controller 50 is arrange | positioned in the air cleaner chamber 30 adjacent to the machine room 20, the length of the electric wire which connects the controller 50 and the various apparatuses in the machine room 20 can be suppressed. As a result of suppressing the length of the electric wire, noise received by a signal passing through the electric wire can be suppressed. As shown in FIG. 4, the controller 50 includes, for example, a rectangular parallelepiped controller body 51 and a connector connection portion 53 provided (fixed) on the controller body 51.

  The connector connection part 53 is used for electrical connection between the controller 50 and various devices. The connector connecting portion 53 is configured to be able to connect a connector 63 (described later) for electrical connection. For example, a plurality of connector connection portions 53 may be provided (one may be provided). As shown in FIGS. 6A to 6C, the connector connection portion 53 is, for example, a recess (socket, receiving port, insertion port) into which a connector 63 (plug) can be inserted. Further, for example, the connector connecting portion 53 may be a convex portion (not shown) or the like into which the connector 63 having a concave portion can be inserted. In the connector connecting portion 53, “connector work” is performed. The connector work is, for example, attachment / detachment of the connector 63 to / from the connector connecting portion 53 shown in FIG.

The connector connecting portion 53 is arranged as follows. The connector connecting portion 53 is arranged at a position where it is possible to prevent the bracket 43 from interfering with the connector work when an operator on the air cleaner 47 side (rear side X2) performs the connector work with respect to the bracket 43. . Specifically, when the controller 50 side (front side X1) with respect to the bracket 43 is viewed from the air cleaner 47 side (rear side X2) with respect to the bracket 43, the connector connecting portion 53 is arranged as shown in [Arrangement a] below. It is preferable. Further, when viewed in the above direction, the connector connecting portion 53 may be arranged as in the following [Arrangement b] and [Arrangement c].
[Arrangement a] As shown in FIG. 6A, the connector connecting portion 53 (at least a part thereof) is arranged outside the end portion 43 a of the bracket 43. Of the connector connection portion 53, the end portion on the side to which the connector 63 is connected is referred to as an end portion 53a. The end portion 53 a is disposed outside the end portion 43 a of the bracket 43. Specifically, for example, the lower end Z2 end portion 53a of the connector connecting portion 53 is disposed on the lower side Z2 of the lower end Z2 end portion 43a of the bracket 43. The “outer side” of the “outer side than the end portion 43a” may be not only the lower side Z2, but also the upper side Z1, the lateral direction Y outer side, and the like. When there are a plurality of connector connection portions 53, it is preferable that all connector connection portions 53 are arranged as described above.
[Arrangement b] As shown in FIG. 6B, the connector connection portion 53 may be arranged so that the end portion 53a of the connector connection portion 53 and the end portion 43a of the bracket 43 overlap.
[Arrangement c] As shown in FIG. 6C, the entire connector connection portion 53 (including the end portion 53 a) may be arranged inside the end portion 43 a of the bracket 43. In this case, the closer the end 53a is to the end 43a, the easier the connector work is. For example, it is preferable that the connector 63 (at least a part thereof, for example, the lower Z2 end portion) connected to the connector connecting portion 53 is disposed on the outer side (for example, the lower Z2) than the end portion 43a.

  As shown in FIG. 2, the connector connecting portion 53 is arranged with a sufficiently large interval (large enough to facilitate connector work) between the air cleaner 47 and the air cleaner 47. As shown in FIG. 4, the connector connecting portion 53 is disposed on the lower side Z <b> 2 with respect to the lower end of the air cleaner 47, for example. The connector connection part 53 is arrange | positioned at the lower end part of the controller main body 51, for example. The connector connecting portion 53 is disposed (fixed) on the bottom surface (the lower Z2 surface) of the controller main body 51, for example. The connector connecting portion 53 may be disposed on a surface of the controller main body 51 on the rear side X2 (on the air cleaner 47 side with respect to the controller 50). Further, the connector connecting portion 53 may be disposed on the upper surface (the surface of the upper side Z1) or the side surface (the surface on the outer side in the lateral direction Y) of the controller main body 51.

  The harness 61 is a bundle of a plurality of electric wires for connecting the controller 50 and various devices (described above). The harness 61 includes a connector 63.

  The connector 63 is a terminal connected to the connector connecting portion 53 of the controller 50. 3, 4, and 6 (a) to 6 (c), only a part of the plurality of connectors 63 is illustrated.

  Case 65 covers controller 50 grade | etc., As shown in FIG. The case 65 prevents the controller 50 from being splashed with water (rain water, car wash water, etc.), sand or dust. The entire controller 50 is disposed (contained) inside the case 65. A part of the harness 61 is disposed inside the case 65. A harness 61 is fixed to the case 65. The lower end of the case 65 is disposed on the lower side Z <b> 2 than the bracket 43. The case 65 is fixed to the front side X <b> 1 (plane portion 44) of the bracket 43. The case 65 is fixed to the lower Z2 surface of the bent portion 45 of the bracket 43 (see FIG. 2). The case 65 is, for example, a hollow rectangular parallelepiped. The case 65 includes, for example, a substantially rectangular parallelepiped case main body 65a, a fixture 65b, and a lid 65c.

  The fixture 65 b is a member for fixing the case 65 to the bracket 43. The fixing tool 65 b is a member for fixing the controller 50 to the bracket 43 via the case 65. The fixing tool 65b is fixed to the case main body 65a. The fixture 65b protrudes in the lateral direction Y from, for example, a side surface (a surface outside the lateral direction Y) of the case main body 65a. The fixture 65b may protrude from the upper surface (the surface of the upper side Z1) of the case main body 65a to the upper side Z1 (not shown). As shown in FIG. 2, the fixture 65 b fixes the case 65 to the bracket 43 such that a gap is formed between the case body 65 a and the bracket 43, for example.

  The lid 65c can be opened and closed (including removable) with respect to the case body 65a. The lid 65c is arranged in the peripheral portion of the connector connection portion 53 so that the connector work at the connector connection portion 53 can be easily performed when the lid is opened (or removed). Specifically, when the controller 50 side (front side X1) with respect to the bracket 43 is viewed from the air cleaner 47 side (rear side X2) with respect to the bracket 43, the case 65 protrudes from the bracket 43 (for example, on the lower side Z2). However, the lid 65c is disposed on the protruding portion. More specifically, the lid 65c is disposed on the lower side Z2 with respect to the lower end (end portion 43a of the lower side Z2) of the bracket 43. 4 to 6 show a state where the lid 65c is removed from the case main body 65a, and in FIGS. 4 and 5, the lid 65c is shown by a two-dot chain line (imaginary line).

(Effect 1)
Next, effects of the controller mounting structure 40 shown in FIG. 1 will be described. The controller mounting structure 40 is provided on the upper swing body 1. The upper swing body 1 includes a swing frame 11 and a cab 13 attached to the swing frame 11. The controller mounting structure 40 includes a bracket 43 that is fixed to the revolving frame 11 and disposed behind the cab 13, an air cleaner 47, and a controller 50.
[Configuration 1-1] The air cleaner 47 is fixed to the bracket 43. The controller 50 is fixed to the bracket 43.
[Configuration 1-2] The controller 50 is disposed on the opposite side of the air cleaner 47 with respect to the bracket 43.

  The controller mounting structure 40 includes the above [Configuration 1-1]. That is, the bracket 43 is used both for fixing the air cleaner 47 and for fixing the controller 50. Therefore, despite the configuration in which the controller 50 is disposed behind the cab 13, the number of parts and the cost can be suppressed (compared to the technique described in Patent Document 1 described above).

  The controller mounting structure 40 includes the above [Configuration 1-2]. Therefore, the controller 50 can be fixed to the bracket 43 without interference between the controller 50 and the air cleaner 47. The bracket 43 is fixed to the revolving frame 11. As a result, the controller 50 can be reliably fixed (attached) to the revolving frame 11.

(Effect 2)
As shown in FIG. 4, the controller 50 includes a connector connection portion 53 to which an electrical connection connector 63 can be connected. As shown in FIG. 6A, when the air cleaner 47 side (rear side X2) with respect to the bracket 43 is viewed from the controller 50 side (front side X1) with respect to the bracket 43, the connector connecting portion 53 is from the end portion 43a of the bracket 43. Is also arranged outside.

  In this configuration, an operator on the air cleaner 47 side (rear side X2) with respect to the bracket 43 shown in FIG. 4 can easily perform the connector work at the connector connecting portion 53 (accessibility to the connector connecting portion 53 is good).

1 Upper revolving structure 11 Revolving frame 13 Cab
17 Cover 40 Controller mounting structure 43 Bracket 43a End 47 Air cleaner 50 Controller 53 Connector connection

Claims (2)

A swivel frame;
A cab attached to the swivel frame;
A cover extending rearward from the rear surface of the cab;
A controller mounting structure provided in an upper swing body comprising:
Is fixed relative to the rotating frame, is located behind the cab, and a bracket that will be placed inside the cover,
An air cleaner fixed to the bracket;
A controller fixed to the bracket;
With
The controller is disposed on the opposite side of the air cleaner with respect to the bracket.
Controller mounting structure. The controller includes a connector connecting portion capable of connecting a connector for electrical connection,
When the controller side relative to the bracket is viewed from the air cleaner side relative to the bracket, the connector connecting portion is disposed so as to protrude outward from the end portion of the bracket.
The controller mounting structure according to claim 1.