JP2007236218A - Arrangement structure of controller installed in working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a water-proofing property of a controller, etc., installed in an operating tower, in a working vehicle in which the operating tower is arranged in a standing condition on the front side of a riding floor. <P>SOLUTION: In an arrangement structure of a controller 35 installed in a working vehicle 11 equipped with an upper cover 20 for covering the upper side of an operating tower 19 and a front panel 22 for covering the front side, a box body 36 for storing the controller 35 is attached to a rear face B of a wall body 32 for detachably supporting the front panel 22 and a peephole 32b is provided in a part of the wall body 32 corresponding to an electric wiring connection part C of the controller 35 to enable connection of the electric wiring from the front side of the peephole 32b to the controller 35 and a drain hole 32c is provided in a part of the wall body 32 corresponding to the lower part of the box body 36. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an arrangement structure of a control device provided on a work vehicle such as a combine that has a control tower provided with an operation tool standing at the front part of a boarding step.

Conventionally, in a combine that is an example of a work vehicle, a control stand having a steering control lever is erected on the front side of a step floor on which an operator gets on, and an upper cover is provided to cover the upper side of the control stand. A front cover (front panel) that covers the front side of the platform and a rear cover that covers the rear side are detachably provided, and a controller for each function block for the combine control is housed in the cockpit chamber formed by the front and rear covers. A control box or a relay box containing a relay is known (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-299330 (page 4, FIGS. 13 to 14)

However, in the above-mentioned conventional Patent Document 1, the waterproof measures in the electrical wiring connection portion such as the control box and the relay box provided in the cockpit room are not sufficiently taken,
When water infiltrates into the cockpit room from the gap of the cover due to washing of the airframe or rain water, etc., there is a possibility that leakage occurs in the electrical wiring connection portion and the controller or relay breaks down.

  The present invention has been made to solve the above-mentioned problems, and a control tower provided with an operation tool is erected on the front side of the boarding step, and an upper cover that covers the upper side of the control tower and the front side are covered. An arrangement structure of a control device provided in a work vehicle including a front panel, wherein a box body containing the control device is attached to a rear surface of a wall body that detachably supports the front panel, and electrical wiring of the control device A first feature is that a peephole is provided in a portion of the wall corresponding to the connecting portion so that electrical wiring can be connected from the front side of the peephole to the control device.

  The second feature is that the display unit provided in the control device is visible from the front side of the peephole provided in the wall.

  Furthermore, a third feature is that a drain hole is provided in a portion of the wall corresponding to the lower part of the box.

  According to the first aspect of the present invention, the box body containing the control device is attached to the rear surface of the wall body that detachably supports the front panel covering the front side of the control tower, and corresponds to the electrical wiring connection portion of the control device. By providing a peephole in the wall portion so that the electrical wiring can be connected to the control device from the front side of the peephole, the control device is covered with a box to ensure sufficient waterproofness. In addition, with the front panel removed, it is possible to easily connect and remove the electrical wiring from the front side of the viewing hole of the wall body to the control device.

  And according to invention of Claim 2, since the display part with which a control apparatus is provided can be visually recognized from the front side of the peephole provided in the wall body, the display content of the said display part can be easily confirmed by removing a front panel be able to.

  Furthermore, according to the invention of claim 3, by providing a drain hole in the wall portion corresponding to the lower part of the box body, even if water enters the box body during the car washing operation of the machine body, Water is quickly drained through the hole.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the combine 11, and FIG. 2 is a plan view. The combine 11 supports a machine frame 13 on a pair of left and right crawler travel devices 12, and a grain candy is placed in front of the machine frame 13. The pre-processing part 15 conveyed to the threshing part 14 is harvested.

  A seat 16 on which an operator is seated is provided at the rear of the pre-processing unit 15. On the front side of the boarding step 17 that forms the floor surface in front of the seat 16, the steering of the fuselage and the pre-processing unit 15 are provided. A control tower 19 provided with a multi-steering lever 18 for raising and lowering is erected. The multi-steer lever 18 protrudes from an upper cover 20 that also serves as a meter panel that covers the upper side of the control tower 19, and the front side of the control tower 19 is covered with a front panel 22 that has a headlamp 21 built therein.

On the other hand, the side panel 23 on the left side of the seat 16 has a main transmission lever 24, an auxiliary transmission lever 25,
In addition, a plurality of operation levers and switches necessary for the operation of the combine 11 such as the work machine / reaching clutch lever 26 are arranged.

  In addition, the grains threshed / selected in the threshing section 14 are temporarily stored in a grain tank 27 provided at the rear of the seat 16, and the threshed waste is removed from the post-processing section 28 provided in the rear part of the machine body. Discharged outside. The grain temporarily stored in the grain tank 27 can be discharged out of the machine via the grain discharge auger 29.

  A travel clutch pedal 31 is disposed on the left side of the front end of the boarding step 17. As shown in FIGS. 3 to 5, the traveling clutch pedal 31 is supported at both ends by a plate-like wall body 32 erected so as to face the front position of the seat 16 at the front end portion of the boarding step 17. The supporting shaft 31a is integrally fixed, and the stepped portion of the clutch pedal 31 protrudes from the guide hole 32a formed in the wall body 32 in the seat 16 direction.

  More specifically, the wall body 32 is made of a plate bent in a U shape in plan view, and a base end portion is fixed to the front end of the operation frame 33 with the opening side facing the boarding step 17. . The operation frame 33 is formed in a box shape at the right front end portion of the body frame 13 formed by welding a plurality of square pipes in a lattice shape, and in the operation frame 33, that is, below the boarding step 17, A plurality of solenoid valves for supplying and discharging hydraulic oil to and from a hydraulic cylinder (not shown) that moves the processing unit 15 up and down, a hydraulic cylinder 34 that moves the grain discharge auger 29 up and down, and the like can be installed as a unit.

And the upper cover 20 which covers the upper side of the control tower 19 and the front panel 22 which covers the front side of the control tower 19 are detachably supported (screwed) on the wall body 32 described above, and the rear surface of the wall body 32 is provided. A box 36 containing a control device (microcomputer board) 35 is attached to one side upper part of B. The control device 35 is screwed to the box 36 as shown in FIG.

  Further, a peep hole 32b is provided in a portion of the wall body 32 corresponding to a plurality of electric wiring connecting portions (connectors) C provided in the control device 35, and connection of electric wiring from the peep hole 32b side to the control device 35 is performed. The control device 35 is covered with the box body 36 to ensure sufficient waterproofness, and the front panel 22 is removed from the front side of the peep hole 32b of the wall body 32. It is possible to easily connect and disconnect the electrical wiring from the control device 35.

  Further, a seven segment indicator 35a, which is a display unit provided in the control device 35, is visible from the front side of the peep hole 32b provided in the wall body 32, and the display contents of the seven segment indicator 35a are removed by removing the front panel 22. It can be easily confirmed.

  Further, a drainage hole 32c is provided in a portion of the wall body 32 corresponding to the lower part of the box body 36, and even if water enters the box body 36 by a car washing operation of the machine body, the water drainage hole 32c is passed through the drainage hole 32c. Water is drained immediately.

  In this embodiment, the individual electric wiring group 37 connected to the control device 35 and the electric wiring connected to other instruments (not shown) are converged on one harness H as shown in FIGS. Since this harness H is arranged above the support shaft 31a of the traveling clutch pedal 31, it is possible to secure a wide space around the support shaft 31a, particularly the lower space S thereof. Wiring arrangement and link maintainability of the traveling clutch pedal 31 are improved.

  FIG. 6 is a side view showing the structure of the grain discharge clutch lever 41. By rotating the grain discharge clutch lever 41 from the “OFF” state to the “ON” state as shown by the arrow in FIG. A belt transmission mechanism is provided that transmits power from an engine (not shown) to the grain tank 27 and the grain discharge auger 29.

  An NC contact type micro switch 42 for detecting the “on” state of the grain discharge clutch lever 41 is provided at the base end of the grain discharge clutch lever 41, that is, in the vicinity of the rotation fulcrum P. That is, when the grain discharge clutch lever 41 is in the “on” state, the NC contact of the micro switch 42 is opened to shut off the engine start circuit so that no overload is applied when the engine is started. .

  In addition, by using a male / female giboshi terminal as the connector of the micro switch 42, in the event of an emergency such as breakage of the micro switch 42, the micro switch 42 is removed and the giboshi terminal on the assembled wiring side is directly connected. Start is possible.

  Although not described in detail, in this embodiment, a P button (not shown) serving as a pivot point of the micro switch 42 and a P nut serving as a fixing means are fixed to the bracket 43 side where the micro switch 42 is mounted. Subtle positioning adjustment of the micro switch 42 can be easily performed via the P button.

The side view of a combine. The top view of a combine. The side view around a control tower. The rear perspective view around a control tower. The front perspective view around a control tower. The side view which shows the structure of a grain discharge clutch lever. The perspective view which shows the attachment state of a control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Work vehicle 17 Boarding step 18 Operation tool 19 Control tower 20 Upper cover 22 Front panel 32 Wall body 32b Peep hole 32c Drain hole 35 Control apparatus 35a Display part 36 Box body B Rear surface C Electrical wiring connection part

Claims (3)

  A control tower (19) having an operation tool (18) is erected on the front side of the boarding step (17), and an upper cover (20) covering the upper side of the control tower (19) and a front panel (22) covering the front side. The control device (35) is disposed on the rear surface (B) of the wall body (32) that detachably supports the front panel (22). The housed box (36) is attached, and a peep hole (32b) is provided in a portion of the wall (32) corresponding to the electrical wiring connection portion (C) of the control device (35). The arrangement structure of the control device provided in the work vehicle, characterized in that the electrical wiring can be connected from the front side to the control device (35).   The arrangement structure of the control apparatus provided in the work vehicle according to claim 1, wherein the display section (35a) provided in the control apparatus (35) is visible from the front side of the peephole (32b) provided in the wall body (32).   The arrangement structure of the control apparatus provided in the work vehicle according to claim 1 or 2, wherein a drain hole (32c) is provided in a portion of the wall body (32) corresponding to a lower portion of the box (36).

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