JP2010051221A - Steering device of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steering device of a combine harvester having a reduced production cost by simplifying a construction. <P>SOLUTION: The steering device of the combine harvester is provided with an auxiliary step (4a) for placing a foot of an operator sitting on an operation seat (2) and positioned at a side of a cabin floor (3), and a parking pedal (5) positioned near the auxiliary step (4a) and pressed by one foot of the operator on the operation seat (2) for actuating a parking brake, wherein a pressing face (5a) for pressing the parking pedal (5) with the foot is positioned behind a calf (A) of an operator's leg placed on the auxiliary step (4a) interposing a prescribed gap between the calf and the pressing face at an initial state before pressing the pedal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine steering apparatus using a parking pedal for operating a parking brake which is disposed in a cockpit of a combine and which fixes a fuselage.

  Various operating tools including a parking pedal are disposed in the cockpit of the combine as a control device for driving operation of the traveling equipment and the work equipment. This parking pedal is configured so that the operator at the operator's seat can step on with one foot, and when the engine is started or when the aircraft is stopped, the driving transmission system can be locked to fix the aircraft. it can.

The parking pedal is disposed at a side end of the cockpit floor, and the operator of the operation seat puts his / her foot on an auxiliary step provided in the vicinity of the parking pedal, so that it is possible to cope with work running with a stable posture.
JP 2006-115740 A

  However, when starting the engine or stopping the airframe, it is necessary to extend the foot to the parking pedal on the side edge of the floor and perform a stepping operation, which is a problem in terms of operability.

  An object of the present invention is to provide a combine control device that can satisfy both the operability of pedal depression when using a parking brake and the control response when traveling on the airframe.

  According to the first aspect of the present invention, there is provided an auxiliary step disposed on the side of the cockpit floor for the operator of the operator seat to place his / her foot, and an operator seat disposed near the auxiliary step for operating the parking brake. In the combined control device comprising a parking pedal that can be operated with one foot, the tread surface for operating the parking pedal is the foot of the operator's foot placed in the auxiliary step in the initial state before the stepping operation. It is characterized by being configured to be located at a predetermined interval behind the calf.

  According to a second aspect of the present invention, in the configuration of the first aspect, the tread surface portion of the parking pedal is configured to be positioned higher than the upper surface of the auxiliary step when the parking brake is operated.

  The combine control device according to the first aspect of the present invention provides a pedestrian parking pedal for traveling that does not require stepping on the parking pedal while ensuring the operability of stepping on the parking pedal when the engine is started or stopped. Since it is possible to place the foot on the auxiliary step without any interference, it is possible to cope with work running with a stable posture.

  In addition to the effect of the first aspect, the combine control device according to the second aspect of the present invention does not require troublesome handling due to the relationship with auxiliary steps such as toe operation and stepping operation when operating the parking pedal. The tread surface can be stepped down to the stepping position where it operates.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
FIG. 1 is a device layout diagram of the cockpit floor.
The combine steering apparatus 1 according to the present invention includes a floor 3 formed at the base of the operation seat 2, left and right auxiliary steps 4 a and 4 b integrally formed at the front of the floor 3, and left auxiliary steps. The parking pedal 5 is arranged in the vicinity of 4a, and in addition, a scratching pedal 6 and the like arranged near the right auxiliary step 4b are provided.

  The functions of these control devices 1 are such that the auxiliary steps 4a and 4b support the left and right feet of the operator operator seated on the operation seat 2 that is shaken by the traveling of the combine. The adjustment and the height adjustment and steering adjustment by the power steering lever of the right hand operation are stabilized. The parking pedal 5 activates the parking brake for locking the traveling system when the engine is started or stopped, and the brake pedal 6 is By stopping the traveling system, mowing and threshing are carried out while the vehicle is stopped.

  The configuration of the invention will be described in detail. As shown in FIG. 2 which is a side view (a) and a rear view (b) of the main part of the control device, the left and right auxiliary steps 4a, 4b Is formed at a predetermined height from the floor 3 at the front position of the left and right feet of the operator so that the posture of the operator sitting on the floor is stabilized.

  The parking pedal 5 includes a tread surface portion 5a that can be operated by the operator of the operator seat 2 with the left foot in order to activate the parking brake when the engine is started or when traveling is stopped. The lock position where the parking brake is activated, with a distance of about 30 mm away from the back of the calf A of the operator on the auxiliary step 4a in the initial state before the stepping operation. It is configured to be positioned higher than the upper surface of the auxiliary step 4a in a state where it is depressed.

  By configuring the combine control device in this way, the operability of stepping on the parking pedal 5 at the time of starting the engine or stopping the traveling is ensured while the cutting operation traveling that does not require the stepping operation is performed in the initial state. Since the foot can be placed on the auxiliary step 4a without interfering with the tread surface portion 5a of the parking pedal 5, it is possible to cope with work running with a stable posture. Further, when the parking pedal 5 is operated, the tread portion 5a can be stepped on to the stepping position where the parking brake operates without requiring troublesome handling due to the relationship with the auxiliary step 4a such as a toe operation or a step change operation.

(Parking pedal rotation support part)
Next, the rotation fulcrum for rotating and supporting the parking pedal 5 will be described.
In the case where the transmission 7 having the hydrostatic continuously variable transmission mechanism 7a, abbreviated as HST, is arranged close to the lower left side of the floor 3, the rotation fulcrum is flush with the frame member of the floor 3. 5b is arranged. That is, a fulcrum pin is provided directly on the square tube which is a strength member of the frame constituting the floor 3 and is used as the rotation fulcrum 5b of the parking pedal 5.

  By configuring the rotation fulcrum 5b as described above, the maintenance of the continuously variable transmission mechanism 7a can be easily performed through the lower part of the rotation fulcrum 5b by simply removing the parking pedal 5 during maintenance requiring the attachment / detachment of the continuously variable transmission mechanism 7a. Since it can be removed to the side, it is possible to avoid a large-scale work of removing the entire frame 3 constituting the floor 3 when the pivotal fulcrum of the parking pedal 5 protrudes downward from the floor.

(Parking pedal tread part)
Next, the tread part 5a of the parking pedal 5 will be described.
The parking pedal 5 may require a relatively large pedaling force depending on the configuration of the traveling gear box. For this purpose, the stepping force can be reduced by moving the stepping action point away from the rotation fulcrum 5b of the parking pedal 5 and increasing the arm ratio. The problem of interference with the foot occurs.

  In order to solve such a problem, as a first configuration example, the tread surface portion 5a is configured to be openable and closable so that the stepping action point can be changed in the extending direction. Use it in an open state to reduce it, and keep it closed during the mowing operation so as not to interfere with the foot.

  Specifically, with respect to the tread portion 5a of the parking pedal 5, as shown in FIG. 3, the plan view (a), the rear view (b), and the side view (c), the tread portion 5a is extended to the front side. The tread surface portion 5a is doubled by a rotating plate 11b superimposed on the fixed plate 11a, and is connected by providing a hinge 12 on the front side so as to open and close like a mobile phone. At the time of parking, the upper rotating plate 11b is opened with the toes of the foot, and it is pushed forward and stepped on, and folded during normal work.

  With the above configuration, when parking or starting the engine, the parking pedal 5 can be lightly operated (depressed) with a large arm ratio, and since it fits compactly during normal mowing work, it does not interfere with the foot and is natural. A good driving posture.

  Next, as a second configuration example of the tread portion 5a, the treading position (distance from the rotation fulcrum) is configured to be rotatable so that the treading force can be changed in the extending direction. Rotate forward and extend (reduce the arm ratio) to reduce, and step backwards during cutting and keep it short so that it does not interfere with your feet.

  Specifically, as shown in FIG. 4, a plan view (a), a side view (b), and an exploded side view (c) of the tread portion 5a of the parking pedal 5 are provided so that the tread portion 5a can be rotated. The fitting portion 21 is formed so as to rotate forward and backward, and stoppers 22 and 22 are provided. When parking, turn the tread portion 5a forward with the toes of your feet and step on. Turn it backwards during normal work.

  With the above configuration, the parking pedal 5 can be lightly operated (depressed) with a large arm ratio when parking or starting the engine, as described above, and it interferes with the foot because it fits compactly during normal cutting operations. Without taking a natural driving posture.

  Next, as a third configuration example of the tread portion 5a, it is configured to slide back and forth so that the distance from the rotation fulcrum 5b can be changed, and when stepping on when parking or starting the engine, the treading force is reduced. Depress in the extended position (arm ratio becomes advantageous) and keep it in the standard position during cutting operation so as not to interfere with the foot.

  Specifically, the tread portion 5a of the parking pedal 5 is fixed as shown in FIG. 5 with a plan view (a), a rear view (b), and an operation side view when extended (c) and stored (d). The plate 31 and the slide plate 32 are configured so that the slide plate 32 can be extended by sliding about 50 mm from the standard position. A stopper 33 and a notch 34 corresponding to the slide range are provided between the fixed plate 31 and the slide plate 32 so that the slide plate 32 moves to the extended position. At the time of parking, the slide plate 32 is pushed forward with the toes of the foot and is slid to the extended position and stepped on. During normal operation, the weight is lowered and returned to the standard position.

  With the above configuration, the parking pedal 5 can be lightly operated (depressed) with a large arm ratio when parking or starting the engine, as described above, and it interferes with the foot because it fits compactly during normal cutting operations. Without taking a natural driving posture.

(Rolling cylinder)
Next, a rolling cylinder portion for adjusting the vehicle body inclination in the vehicle width direction will be described.
In a two-base combine equipped with a vehicle body horizontal (rolling) mechanism, the plan view of the main part of the rolling cylinder part and the A arrow view thereof are shown in FIGS. 6 and 7, respectively, for the left and right rolling cylinders 41L and 41R. The left rolling cylinder 41L is placed under the threshing machine 42, and the sensor 43 for detecting the rolling position is moved out of the lower end shape range of the threshing machine 42 between the threshing machine 42 and the muffler tail pipe 44 with the cover 44a. Place it at the specified position.
By configuring as described above, since dust or the like does not accumulate on the rolling cylinder 41L, the cleaning work becomes easier, and the sensor 43 can be maintained more easily than the upper arrangement of the machine body.

  As another arrangement example of the sensor 43, as shown in FIG. 8 which is a plan view (a) and a rear view (b) of the main part of the rolling cylinder, the sensor 43 is placed on the main beam 46 of the traveling frame 45. By arranging, the sensor 43 does not come out from the upper surface of the traveling frame 45, so that problems such as interference can be solved.

(Muffler body)
Next, the muffler main body will be described.
In the configuration in which the muffler main body is disposed on the upper part of the engine, the conventional guide for guiding the cooling air from the engine cooling fan to the muffler main body has a planar configuration (for example, Japanese Utility Model Publication No. 64-6124, Japanese Utility Model Publication 59- On the other hand, when the injection timing is delayed and the combustion is performed slowly in order to comply with the exhaust gas regulations, a new countermeasure is required because the exhaust gas temperature becomes higher than the conventional one.

  Therefore, as for the muffler main body 51 arranged at the upper part of the engine E, as shown in FIGS. 9 and 10, respectively, a side view of the main part and a front view of the operation thereof, guide plates 52a for guiding the engine cooling air are provided. A plurality of straight plates are used, and flanges 53 and 53 are provided integrally with the main body on both sides of the muffler main body 51, and are connected to the cooling air guide 52 by bolting. The cooling air guide 52 is connected to the fan side guide 55 via an elastic body 54 such as a rubber plate.

  With the above cooling configuration, the guide plates 52a that provide linearity to the flanges 53 and 53 on both sides welded to the muffler main body 51 are coupled to increase the heat radiation area of the muffler so that the cooling air is not turbulent. It is possible to improve the cooling performance by guiding.

Equipment layout on the cockpit floor Side view (a) and rear view (b) of main parts of the steering device Plan view (a), rear view (b), and side view (c) of parking pedal (first example) Plan view (a), side view (b), and exploded side view (c) of parking pedal (second example) Plan view (a), rear view (b), and operation side view of extended (c) and storage (d) of parking pedal (third example) Plan view of the main part of the rolling cylinder A view of arrow A in FIG. Plan view of main part of rolling cylinder (a) and rear view thereof (b) Side view of the main part of the muffler body Action explanatory drawing by the front view of the muffler main-body part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control device 2 Operation seat 3 Floor 4a Auxiliary step 5 Parking pedal 5a Tread part 5b Rotation fulcrum A Calf

Claims (2)

An auxiliary step (4a) arranged on the side of the cockpit floor (3) for the operator of the operator seat (2) to place his foot and a parking brake which is arranged in the vicinity of the auxiliary step (4a) In order to achieve this, in a combine control device comprising a parking pedal (5) that can be operated with one foot by an operator of the operator seat (2),
The tread surface (5a) for depressing the parking pedal (5) is spaced a predetermined distance behind the calf (A) of the operator's foot placed in the auxiliary step (4a) in the initial state before the depressing operation. Combining control device, characterized in that it is configured to be positioned at   2. The operation of the combine according to claim 1, wherein the tread surface portion of the parking pedal is configured to be positioned higher than the upper surface of the auxiliary step in the depressed state where the parking brake is operated. apparatus.

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