JP2008054536A - Operating lever of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability by preventing misoperation of a multi-steering lever for carrying out steering of a combine harvester and lifting and lowering operation of a front processing part by hydraulic pressure. <P>SOLUTION: The visual confirmation or hand confirmation of an operation grip 30 is not required even for an operator unfamiliar to the operation of the combine harvester 11, the operation feeling is improved, and safe driving is enabled by providing the grip 30 rotatably operable in the right and left direction based on the progressing direction of a machine body at the upper part of the multi-steering lever 21 for carrying out the steering of the machine body and the lifting and lowering operation of the front processing part 14 while holding the grip 30, and constituting the grip 30 so that the steering direction of the machine body may be finely regulated rapidly by the rotary operation of the grip 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of a grip in a multi-steering lever that performs a steering operation of a combine and a lifting operation of a preprocessing unit.

In a conventional combine, a multi-steering lever for steering a hydraulic combine and raising / lowering a pre-processing unit is provided on a front operation panel disposed in front of a driver's seat, and at the tip (top) of the multi-steering lever. It is known that a steering direction of a combine can be finely adjusted in a trimming operation or the like during a mowing operation by attaching an operation grip with a just director switch (for example, see Patent Document 1).
JP-A-8-211956 (page 2-3, FIG. 1 to FIG. 3)

  However, the above-mentioned operation grip with a just director switch is one in which one of the left and right direction fine adjustment switches provided on the top thereof is selectively pushed with a thumb or the like. It is easy to make a mistake in pressing the left / right direction fine adjustment switch due to the above, and there is a problem in operability. In particular, in the case of an operator who is unfamiliar with the operation of the combine, it is necessary to visually check the top of the operation grip or to confirm the operation with the tentacles in order to prevent erroneous operation of the left and right direction fine adjustment switches.

  The present invention has been made to solve the above-mentioned problems, and is a combine that steers the aircraft and raises and lowers the pretreatment unit by tilting the aircraft in the left-right direction and the front-rear direction while holding the grip. The operating lever is provided so that the grip can be rotated left and right, and the steering of the airframe can be finely adjusted in the rotational operation direction.

  According to the present invention, it is possible to rotate the grip to the left and right in the operation lever of the combine that steers the aircraft and raises and lowers the pretreatment unit by tilting the aircraft in the left-right direction and the front-rear direction while holding the grip. In addition, it is possible to finely adjust the steering of the aircraft in the direction of its rotational operation, so that the right and left direction fine adjustment switch by re-gripping the operation grip, etc., like the conventional operation grip with just director switch. The operability is improved because there is no mistake in pressing. In particular, even an operator who is unfamiliar with the operation of the combiner does not need to visually check the top of the operation grip or check the operation with a tentacle, thereby improving the operation feeling and enabling safe driving.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a combine 11 that is a mobile agricultural machine, and FIG. 2 is a perspective view of a control unit 16 that will be described later. The combine 11 supports a body frame 13 by a pair of left and right crawler travel devices 12 and 12. In addition, a pre-processing unit 14 is provided in front of the machine body frame 13 and transports to a threshing unit (not shown) while cutting the cereal.

  In addition, a seat 15 on which an operator is seated and a control unit 16 having various operation tools are disposed behind the preprocessing unit 14, and a grain tank 17 is illustrated on one side of the rear of the seat 15 and illustrated on the other side. There is no threshing part. The grain that has been threshed / sorted in the threshing unit is temporarily stored in the grain tank 17, and the grain temporarily stored in the grain tank 17 is undulated through the vertical conveyance pipe 18. It can be discharged from the outlet 19a of the possible grain discharge auger 19 to the outside of the machine.

  A multi-steering lever 21 is provided on the front side of the boarding step 20 that forms the floor surface in front of the seat 15 and performs the steering of the aircraft and the raising / lowering operation of the preprocessing unit 14 while holding the grip 30 as will be described in detail later. The control tower 22 equipped with is erected. The multi-steering lever 21 protrudes from an upper surface panel 23 that also serves as a meter panel that covers the upper portion of the control tower 22, and the front side of the control tower 22 is covered with a front panel 24 that includes a headlight (not shown). Yes.

  By the way, the multi-steering lever 21 is operated by tilting the multi-steering lever 21 from the neutral state to the left and right sides as shown in FIG. On the other hand, by the gentle turning and further tilting operation of the multi-steer lever 21, a sudden turning operation by actuating a side brake (not shown) in the tilting direction is possible. Further, as shown in FIG. 3B, the pre-processing section 14 can be moved up and down by tilting the multi-steer lever 21 from the neutral state in the front-rear direction.

On the other hand, on the side panel 25 on the left side of the seat 15, a main transmission lever 26, an auxiliary transmission lever 27,
In addition, a plurality of operation levers and switches necessary for the operation of the combine 11 such as the work machine clutch lever 28 and the cutting clutch lever 29 are arranged.

  4 and 5, the multi-steer lever 21 is provided with a lever shaft 21a of the multi-steer lever 21, that is, a grip 30 that can be rotated right and left with respect to the forward direction of the machine body. ing.

  The grip 30 includes a lower grip 34 rotatably supported via retaining rings 31, 31, washers 32, 32 and bearings 33, 33 on an upper portion of the lever shaft 21 a of the multi-steer lever 21. The upper grip 36 is integrally fixed using a plurality of screws 35.

  More specifically, a concave portion 36a is formed on the mating surface S side of the upper grip 36 with the lower grip 34, and the left and right micro-turns that detect the fine turning operation of the aircraft in the left-right direction are formed in the concave portions 36a. Operation detection switches 37L and 37R are internally provided.

  The upper end portion of the lever shaft 21a of the multi-steering lever 21 facing the recessed portion 36a is in contact with the left and right fine turning operation detection switches 37L and 37R for detecting the fine turning operation of the aircraft in the left and right direction by the grip 30. Thus, a stopper 38 that restricts the rotation operation of the grip 30 beyond a predetermined value is fixed.

  That is, as shown in FIG. 5, when the gripper 30 is held and rotated from the neutral position indicated by the two-dot chain line in the direction of arrow A (leftward) indicated by the solid line, the left fine turning operation detection switch 37L is applied to the stopper 38. In contact therewith, the configuration is such that the steering direction of the airframe can be finely adjusted to the left in accordance with the rotation operation of the grip 30 described later in detail. When the gripping force of the grip 30 is relaxed from this state, the grip 30 is brought to a neutral posture shown by a two-dot chain line by the biasing force of a compression spring (not shown) built in the left and right fine turning operation detection switches 37L and 37R. It comes to automatically return.

  The left and right micro-turn operation detection switches 37L and 37R described above are connected to the micro-steering lever 21 via the wire shafts 39L and 39R, which are the lever shafts 21a of the multi-steering lever 21, as shown in the block diagram of FIG. The computer 40 is connected to an input side interface 40a of a central processing unit (CPU), and the input side interface 40a is connected between a shift detection potentiometer 41 for detecting the shift position of the main shift lever 26 and a weed body 42. The left and right direction sensors 44L and 44R attached to the cutting frame 43 at the bottom of the pre-processing unit 14 for detecting the passing position of the introduced cereals are connected.

  On the other hand, on the output side interface 40b of the central processing unit, side clutch mechanisms (not shown) of the pair of left and right crawler traveling devices 12 and 12 are selectively connected, that is, the left and right side clutches are operated via hydraulic cylinders. The left and right surge killers 46L, 46R are connected in parallel with the electromagnetic solenoid valves 45L, 45R and the left and right electromagnetic solenoid valves 45L, 45R.

  As described above, in the present invention, the multi-steering lever 21 that steers the aircraft and raises and lowers the preprocessing unit 14 by holding the grip 30 and tilting the aircraft in the left-right direction and the front-rear direction is used. By providing a grip 30 that can be rotated left and right with respect to the traveling direction of the airframe at the upper part of the steering lever 21, the right and left fine turning operation detection switches 37L and 37R are rotated by rotating the grip 30 to the left and right sides. When one of them is turned ON, the detection signal is input to the microcomputer 40, and then one electromagnetic solenoid valve (45L, 45R) for operating a shifter of a side clutch (not shown) corresponding to the detection signal, that is, the grip 30 Actuate an electromagnetic solenoid valve corresponding to the rotational operation direction of the Perform slow turning control to escape passage in a short time, thereby being configured as a steering of the aircraft can be quickly tweak the rotational operation direction of the grip 30.

  Further, the grip 30 that can be rotated with respect to the multi-steer lever 21 described above can be mistakenly pressed by the right and left direction fine adjustment switch by re-gripping the operation grip, as in the conventional operation grip with a just director switch. Since it does not wake up, operability is improved. In particular, even an operator who is unfamiliar with the operation of the combine 11 need not visually check the top of the operation grip 30 or check the operation with a tentacle, thereby improving the operational feeling and enabling safe driving.

The side view of a combine. The perspective view of a control part. The rear view (a) and side view (b) which show the operation method of a multi steering lever. The sectional side view of the grip part of a multi steering lever. FIG. The block diagram of a control part.

Explanation of symbols

14 Pretreatment part 21 Operation tool 30 Grip

Claims (1)

  In the operation lever (21) of the combine that controls the aircraft and raises and lowers the pre-processing unit (14) by tilting the aircraft in the left-right direction and the front-rear direction while holding the grip (30), the grip (30) Is provided so that it can be rotated left and right, and the steering of the fuselage can be finely adjusted in the rotational operation direction.

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