JP2000175541A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make operations of a reaping, lifting and lowering operating member performable from a position on the ground without touching a steering wheel and precisely carry out a loading and unloading of a combine harvester from a load-carrying platform, etc., in a combine harvester having the round type steering wheel. SOLUTION: This combine harvester is obtained by installing a maneuvering part 9 equipped with a steering column 26 having a driver's seat 24 and a round type steering wheel 27 above a machine frame 2 supported by a crawler mobile device 1 and further liftably and lowerably providing a reaping part 3 in front of the machine frame 2. The combine harvester is composed so as to install a reaping, lifting and lowering operating member 29 for lifting and lowering the reaping part 3 in a lateral face part of the steering column 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester for cutting and threshing grain stalks while traveling in a field.

[0002]

2. Description of the Related Art FIG. 8 shows a conventional combine.
It comprises a crawler traveling device 1, a reaping unit 3 and a control unit 9. The steering section 9 has a handle 101 for assisting the driver in maintaining his / her posture on an upper surface of a front column 100 formed in front of the driver's seat 24, and a steering lever 102 that swings back and forth and right and left. Is provided in an upright position, and
Parking brake lever 10 on the side of front column 100
3 and a side mirror 30, and a main shift lever 32 is provided on the driver's seat 24 inside the vehicle.

Here, when the control lever 102 swings left and right, the operating state of the crawler traveling device 1 is changed to change the traveling direction of the body. 3 is moved up and down. The main transmission lever 32 is operated to swing back and forth to change the traveling speed of the body by the crawler traveling device 1.

[0004] The loading and unloading of the above-mentioned combine on the carrier of a carrier is performed, for example, as follows. That is,
The driver operates the crawler traveling device 1 to face the tread plate laid on the carrier, and then descends from the fuselage in the advancing state, after which the fuselage is attached to the side of the fuselage without any trouble. Proceed to proceed and stop when the aircraft reaches the loading platform or the ground.

[0005] In this case, the driver's treatment is to operate the control lever 102 to correct the traveling direction and the height of the reaper 3, or to operate the parking brake lever 103 to stop the advance of the body. These measures can be easily performed by operating the control lever 102 or the parking brake lever 103 from the ground. In addition, the handle 101 can be held as required during these operations, so that an accurate operation can be performed.

[0006]

By the way, in the above-mentioned conventional harvesting operation using a combine, the control lever 1 is not used.
The steering by operating the 02 is not easy for the driver, and tends to cause mental fatigue. In order to solve this problem, the applicant has developed a new combine which is provided with a round steering handle in place of the control lever 102 so that the vehicle can be driven with the same feeling as an automobile or the like. In this new combine, the front column 100, the handle 101, and the like are not provided as in the prior art in order to improve the forward visibility. Under such circumstances, a mowing lifting operation switch for raising and lowering the mowing unit is provided. Is attached to a main shift lever provided on the driver's seat inside the aircraft.

When the new combine is loaded and unloaded on the loading platform, the driver performs the procedure in accordance with the conventional manner. Since the operation switch is inaccessible from the ground, the driver has to act to get on the aircraft even if it is troublesome. Also, since there is no equivalent to the conventional handle 101, the body may accidentally touch the steering handle when getting on the aircraft, which causes the steering handle to unintentionally swing left and right, May change in an unfavorable direction. SUMMARY OF THE INVENTION An object of the present invention is to mainly address such a problem, and an object of the present invention is to provide a combine which can easily and accurately mount and dismount an airframe on a carrier or the like.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a combine according to the present invention has a driver's seat and a steering column having a round steering handle above a platform supported by a crawler traveling device. A part is provided,
A mowing unit is provided in front of the machine base so as to be able to move up and down, and a mowing elevating operation member for moving the mowing unit up and down is provided on a side surface of the steering column. According to this, the mowing elevating operation member can be easily operated from the ground, so that the body does not erroneously swing to the steering handle when the combine is loaded on or unloaded from the loading platform or the like.

The above combine may be further embodied as follows. That is, a side mirror is provided on the steering column, and a parking brake lever is provided on the outer side of the body below the step surface of the control unit. According to this, the side mirror provides the driver with a view behind the fuselage at a position close to the driver, and the parking brake lever is easily operated from the ground.

Further, there is provided an automatic deceleration means which operates so that the crawler traveling device automatically lowers the body advancing speed to a certain speed or less when the body leans back and forth more than a predetermined angle. In this way, when the aircraft is tilted at a certain angle or more, the advancing speed of the aircraft is reduced without requiring any manual operation, whereby the steering operation of the aircraft can be performed on the aircraft and the main shift lever is operated. Do not need to
It will be performed accurately under a small traveling speed.

[0011]

1 is a right side view of a combine according to the present invention, FIG. 2 is a left side view of the combine, FIG. 3 is a front view of the combine, FIG. 4 is a schematic plan view of the combine,
FIG. 5 is a side view showing the front part of the combine.
1 to 4, reference numerals 1 and 1 denote a pair of crawler traveling devices provided on the left and right sides, and 2 denotes a crawler traveling device 1;
1 is a machine base supported by the apparatus.

Numeral 3 designates a reaping unit disposed in front of the machine base 2, and the reaping unit 3 is supported by a horizontal fulcrum shaft 4 shown in FIG. And a telescopic cylinder device (not shown) for raising and lowering the cutting frame 5 around the fulcrum shaft 4. A weeding plate 6 is fixed to the foremost part of the cutting frame 5, and a raised case 7 and a cutting blade 8 are fixed to a portion of the cutting frame 5 behind the weeding plate 6.

Reference numeral 9 denotes a control unit provided on the right side of the foremost part above the machine base 2, and a grain tank 10 is provided behind the control unit 9.
On the left side of the control section 9 and the grain tank 10, a grain culm transport section 11 and a threshing section 12 are provided. The threshing unit 12 includes a feed chain 13, a handling cylinder 14, and a processing cylinder 15
Is provided. Then, the threshing unit 12 and the grain tank 10 are connected via a fryer cylinder 16.

Reference numeral 17 denotes a straw processing section provided in the form of an overhang to the rear of the machine base 2 and cuts the straw from a straw transport chain 18 extending obliquely rearward from the back of the handling cylinder 14 to cut the straw. And a processing main part 19. Reference numeral 20 denotes an engine provided below the rear part of the control unit 9. Reference numeral 21 denotes a mission fixed to the machine base 2, and an input portion of the mission 21 is linked to the engine 20. Reference numeral 22 denotes a grain discharge auger for discharging the grains in the grain tank 10 to the outside.

The combine constructed as described above operates as follows. That is, the rotation of the engine 20 is input to the mission 21 and subsequently transmitted from the mission 21 to the crawler traveling devices 1 and 1, whereby the crawler traveling devices 1 and 1 are driven to travel the aircraft. While the body is running, the weeding plate 6 is used to squeeze the entanglement between the adjacent streaks of the cultivated culm, the cutting blade 8 cuts the culm caused by the raising device 7, and the culm transport device 11 cuts. The culm is conveyed to the threshing unit 10 and the threshing unit 10 threshes it, and the obtained grain is sent to the grain tank 10 by the fryer 16 while the straw is discharged by the straw chain 18. It is transported to the processing main part 19, and the processing main part 19 cuts this waste straw and discharges it outside the machine.

Next, the control section 9 will be described in detail with reference to FIG. 1 and FIGS. FIG. 6 is an explanatory diagram showing an outline of the straight-moving power transmission path and the steering power transmission path of the combine. A seat column 23 covering the engine 20 is formed on the upper surface of the machine base 2 at the rear of the control section, and a driver's seat 24 is provided on the upper surface of the seat column 23.

A step surface 25 is formed between the front surface i of the seat column 23 and the front edge j of the control section, and from two machine bases in front of the driver's seat 24 at the front of the control section, An elongate steering column 26 having a left-right width approximately 1/2 to 2/3 that of the driver's seat 25 and having almost the same height as the seat surface of the driver's seat 24 is erected. At this time, the step surface portion 25a from the front surface i of the seat column 23 to the rear surface of the steering column 26 is not horizontal, and the left and right step surface portions 25b and 25c of the steering column 26 are inclined upward and forward.

On the upper surface of the steering column 26, a round steering handle 27 is provided.
Is adapted to generate an appropriate speed difference in the traveling operation of the pair of right and left crawler traveling devices 1 and 1 by a rotation operation about a vertical handle shaft, thereby performing a course change similar to an automobile or the like. An accelerator lever 2 for changing the rotation speed of the engine 20 is provided on the outer surface of the steering column 26.
8, a mowing elevating operation member 29 for raising and lowering the mowing unit 3 to an arbitrary height, and a side mirror 30 are provided.
At this time, when the mowing elevating / lowering operating member 29 is swung forward, the mowing unit 3 is operated to descend, when it is swung forward, it is operated up, and when it is stopped at the neutral position, elevating is stopped. And The side mirror 30 provides a rear view near the driver sitting in the driver's seat 24.

A side column 3 is provided on the machine stand 2 on the left side of the control section.
A plurality of lever grooves are provided on the upper surface of the side column 31, and the main transmission lever 32, the auxiliary transmission lever 33, and the reaping clutch lever 34 extend from the inside to the outside of the side column 31 through these lever grooves. And the threshing clutch lever 35 is erected. Reference numeral 36 denotes a front cover mounted on the front edge of the control section. At this time, the main shift lever 32
Is provided with a mowing unit elevating operation switch 32a for raising and lowering the mowing unit 3 from the driver's seat 24.

The above-mentioned components such as the steering column 26, the steering handle 27, and the front cover 36 include:
The specific shape and dimensions are determined so that the driver sitting in the driver's seat 24 does not hinder viewing of any one weeding plate 6 near the front of the steering handle 27.

The side wall 3 on the control section 9 side of the side column 31
7, a parking brake pedal 38 is provided. The parking brake pedal 38 can be held at a fixed position by a locking operation means (not shown). To do. That is, when the driver depresses to the stepping position, the main transmission lever 32 is forcibly moved to the zero traveling speed position (neutral position), and the traveling power transmitted to the crawler traveling devices 1 and 1 is lost by this movement. The parking brake 39 shown in FIG. 6 is operated to fix the crawler traveling devices 1 and 1 in a stopped state. Conversely, when the stepping force is released from the stepping position, the lever moves to the upper position by the force of a spring (not shown), and the movement releases the restraint of the main shift lever,
By operating the main transmission lever 32, the crawler traveling devices 1, 1
, And at the same time, the parking brake 39 in the transmission 21 shown in FIG.

A parking brake lever 40 is provided on the outer side of the body below the step surface 25 and beside the steering column 26. This parking brake lever 4
Numeral 0 indicates that the parking brake pedal 38 can be depressed to the depressed position when the front depressed position is set to the forward depressed position and the upright position shown in FIG. When the parking brake pedal 38 is in the upright position, it functions in the same manner as when the parking brake pedal 38 is moved to the upper position.

The parking brake pedal 38 and the parking brake lever 40 are operated in association with each other, that is, when the parking brake lever 40 is in the forward position, the parking brake pedal 38 is locked. When the driver depresses further than the depressed position, the parking brake lever 40 is automatically displaced to the standing position. Such an associated operating mechanism can be formed by using, for example, a link or a spring.

The structure of the steering section 9 is as described above. Next, the outline of the straight-forward power transmission path and the steering power transmission path will be described with reference to FIG. The rotation of the engine 20 is transmitted to the HST 41 for straight traveling and the HST 42 for steering. Here, HST means a hydrostatic transmission mechanism. Each of the HSTs 41 and 42 has a hydraulic pump and a hydraulic motor similarly to the conventional HST, the hydraulic pump is rotated by the engine 20, the hydraulic motor is rotated by the pressure oil sent from the hydraulic pump, and this rotation is output. It has a rotating swash plate that is operated from the outside, and the oil displacement and the oil feeding direction of the hydraulic motor are changed by the inclination displacement of the rotating swash plate, so that the rotation speed of the hydraulic motor is stepless. The rotation direction is changed at the same time as the rotation direction is changed.

At this time, the rotary swash plate of the HST 41 for straight traveling is assumed to be operated based on the swing displacement of the main transmission lever 32, and the rotary swash plate of the steering HST 42 is controlled by the rotational displacement of the steering handle 27. It shall be operated based on.

The transmission 21 includes a sub-transmission mechanism 43 operated by a sub-transmission lever 33 to change the speed.
, A hydraulic parking brake 39 for restricting rotation of the transmission rotary shaft, a pair of left and right planetary gear mechanisms 44a, 44b,
Further, a differential device 46 having a steering rotation distribution mechanism 45 is provided.

At this time, the sub-transmission mechanism 43 is provided with a straight HST 4
1 and the differential gear 46 converts the straight-running rotation output from the auxiliary transmission mechanism 43 into the pair of planetary gear mechanisms 44a and 44b.
The steering rotation output from the steering HST 42 is also input to the planetary gear mechanisms 44a and 44b via the steering rotation distribution mechanism 45. Each of the left and right planetary gear mechanisms 44a, 44b is independently and interlocked with its corresponding crawler traveling device 1, 1, and the steering rotation distribution mechanism 45 transmits the rotation transmitted from the steering HST 42 to any one of the two. The same direction is transmitted to the planetary gear mechanism 44a and the direction is transmitted to the other planetary gear mechanism 44b in the opposite direction.

An automatic decelerating means 47 is incorporated in the path through which the rotation of the straight HST 41 is transmitted. This automatic deceleration means 47 is used when the body is tilted to a certain degree or more.
In order to automatically reduce the advancing speed of the fuselage, specifically, a tilt sensor 48 is provided near the center of gravity of the fuselage for detecting that the longitudinal tilt of the fuselage has become a predetermined angle or more. Only during the detection operation period of the sensor 48, the deceleration processing device 49 pulls back the main speed change lever 32 to a position near the neutral position and forms a state where the main shift lever 32 can be operated only to the neutral position side from the vicinity position. Is provided. The automatic deceleration means 47 can be variously deformed. For example, the automatic deceleration means 47 operates in relation to the inclination sensor 48 in the rotation transmission path for straight traveling in the mission 21 to increase the reduction ratio. A gear mechanism may be added.

Next, an example of use and operation of the combine according to the above embodiment will be described with reference to FIGS. Here, FIG. 7 is a diagram showing a manner in which the combine is loaded and unloaded on the carrier of the transport vehicle. In normal driving, the driver places the right foot on the right step surface portion 40c of the steering column 26 and the left foot on the opposite step surface portion 40b while sitting in the driver's seat 39. Under this condition, the main transmission lever 32 and the sub transmission lever 33 are rocked to determine the traveling direction and traveling speed of the aircraft, and the steering handle 27 is rotated left and right to steer the aircraft. In addition, the height of the cutting unit 3 is changed by operating the cutting and lifting operation switch 32a.

The loading and unloading of the airframe on the carrier N of the transport vehicle is performed as follows. That is, when first placing on the bed N, the tread m is slopingly extended between the bed N and the ground as shown in FIG. Then, the aircraft is set to the traveling operation state, the aircraft descends from the aircraft to the ground, and monitors the progress of the aircraft near the side of the control unit 9, and performs necessary measures as necessary.

For example, when it is expected that the traveling direction of the machine body deviates from the center of the tread m, the steering handle 27 is operated to correct the advancing direction, and the reaper 3 is expected to collide with the tread m. When operating the mowing elevating operation switch 32a or the mowing elevating operating member 29, the mowing unit 3 is raised and lowered, and when it is desired to stop the progress of the body, the parking brake lever 40 is operated to operate the crawler traveling device 1,
1 is fixed to a stopped state. All of these operations are performed from the ground. At this time, since the steering handle 27, the mowing elevating and lowering operation member 29, and the parking brake lever 40 are located within a reachable range from the ground, the driver operates the vehicle from the ground. Makes the operation easier. On the other hand, when unloading from the loading platform N, the vehicle is advanced in the reverse direction of loading on the loading platform N, and other operations are performed according to the case of loading on the loading platform N.

The operation, operation, and the like related to the traveling speed of the vehicle when the vehicle is placed on and off the carrier N will be described. The driver operates the main shift lever 32 to the swing position corresponding to the relatively small traveling speed of the vehicle. At this time, the swing position of the main transmission lever 32 is held by the frictional force of the friction applying means (not shown). Therefore, even after the driver gets off the aircraft, the aircraft travels at a traveling speed corresponding to the swing position of the main shift lever 32.

During travel of the airframe, for example, as shown in FIG. 7, when the airplane climbs on the tread plate m and the airplane is tilted back and forth by a certain angle or more, the inclination sensor 48 detects and operates. Is continued as long as there is a forward / backward inclination greater than or equal to a certain angle. This detection operation activates the deceleration processing device 49, so that if the main transmission lever 32 is located in the operation position where the main transmission lever 32 has been swung more than the vicinity of the neutral position, the main transmission lever 32 will move in the same machine direction as the operation position. The aircraft is returned to the vicinity of the neutral position, and the aircraft is immediately decelerated to the traveling speed corresponding to the vicinity of the neutral position.

Further, when the aircraft further advances and reaches the loading platform N or the ground, and its forward / backward inclination becomes less than a certain angle,
The detection operation of the inclination sensor 48 disappears, and in connection with this, the deceleration processing device 4 returns to the original state and releases the restraint of the main shift lever 32. As a result, the main shift lever 32 can be swingably operated to an arbitrary position, and the aircraft travels at an arbitrary traveling speed corresponding to the swing operation of the main shift lever 32.

[0035]

According to the present invention, as is apparent from the above-described embodiment, a combine having a round steering handle allows the mowing elevating operation member to be easily operated from the ground without touching the steering handle. Thus, the loading and unloading of the combine on the loading platform or the like can be performed easily and accurately.

According to the second aspect of the present invention, a vehicle equipped with a round steering wheel reflects the field of view behind the fuselage near the driver sitting in the driver's seat, thereby contributing to driving without an accident. The inside airframe can be easily parked from the ground, and the combine can be efficiently loaded and unloaded on the loading platform and the like.

According to the third aspect of the invention, when the aircraft leans back and forth by more than a predetermined angle while the driver is not riding on the aircraft, it is possible to automatically operate the aircraft without operating the main shift lever. As a result, the steering operation can be accurately performed without touching the steering wheel at a low speed of the vehicle, without panic.

[Brief description of the drawings]

FIG. 1 is a right side view of a combine according to the present invention.

FIG. 2 is a left side view of the combine.

FIG. 3 is a front view of the combine.

FIG. 4 is a schematic plan view of the combine.

FIG. 5 is a side view of a front portion of the combine.

FIG. 6 is an explanatory diagram showing an outline of a straight-forward power transmission path and a steering power transmission path of the combine.

FIG. 7 is a diagram showing a manner in which the combine is loaded and unloaded on a carrier of a transport vehicle.

FIG. 8 is a diagram showing a right front part of a conventional combine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crawler running device 2 Machine stand 3 Cutting part 9 Control part 24 Driver's seat 25 Step surface 26 Steering column 27 Steering handle 29 Cutting and raising / lowering operation member 30 Side mirror 40 Parking brake lever 47 Automatic deceleration means

Claims (3)

[Claims] 1. A driver's seat and a steering unit having a steering column having a round steering handle are provided above a machine base supported by a crawler traveling device, and a reaping unit can be raised and lowered in front of the machine base. A combine equipped with a cutting elevating operation member for raising and lowering a cutting unit on a side surface of the steering column. 2. The combine according to claim 1, wherein a side mirror is provided on the steering column, and a parking brake lever is provided on an outer surface of the body below the step surface of the control section. 3. An automatic deceleration means which operates so that the crawler traveling device automatically lowers the advancing speed of the fuselage to a certain speed or less when the fuselage tilts back and forth at a predetermined angle or more. 3. The combine according to 1 or 2.