JP2000316329A - Traveling apparatus of mobile farm machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traveling apparatus enabling the slow traveling of a mobile farm machine for transplanter suitable for running across a ridge. SOLUTION: In a traveling transmission device 9 of a mobile farm machine for transplanter, a speed reducer A for transmitting the rotary power of an input shaft 19 to the main shaft 20 at equal or reduced speed is constructed by utilizing the indispensable input shaft 19 and planting drive shaft 32. The main shaft 20 is extended at a side of the input shaft 19 in coaxial state and is provided with high and low main speed-change gears 34, 35 to perform main speed change. The speed reducer A and the main speed changing device are parallelly arranged in lateral direction. Since the speed reducer A and the main speed changing device are arranged parallelly in lateral direction in the transmission case 18, the speed-reduced transmission can be achieved at a low cost with a simple and light-weight structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a traveling device for a mobile agricultural machine.

[0002]

2. Description of the Related Art A conventional traveling agricultural machine is provided with a traveling mission device for transmitting the rotational power of an engine to traveling wheels. The traveling speed of the traveling agricultural machine is shifted up and down by a main transmission of the traveling mission device. By shifting the sub-transmission to high and low, the traveling speed on the road, the working speed on the field, and the turning speed have been optimized.

[0003]

However, in the conventional apparatus, when the moving agricultural machine is moved over the ridge to the next field, safe low-speed traveling cannot be performed. There was a problem that the operation was troublesome. Therefore, the present invention is to solve such a problem.

[0004]

SUMMARY OF THE INVENTION In order to solve such a technical problem, an invention according to claim 1 is a mobile agricultural machine having a main transmission B in a transmission path from an engine 3 to running wheels, In the transmission case 18, the input shaft 19 and the planting drive shaft 32 are arranged in parallel and mounted on a shaft, and a transmission shaft 20 is mounted on the lateral side of the input shaft 19 so as to be aligned with the center of the shaft. Transmission gears 34 and 35 for performing a transmission are provided on the shaft 20.
Is provided, and between the input shaft 19 and the planting drive shaft 32,
3. A traveling device for a mobile agricultural machine comprising a speed reducer A capable of speed-reducing and transmitting a rotational power of an input shaft 19 to said speed-change shaft 20. The invention according to claim 2, wherein the input shaft 19 and the planting drive shaft 3 are provided.
2, the deceleration device A provided between the transmission case 2 and the transmission case 18 is displaced to one of the left and right sides of the transmission case 18,
Super deceleration lever 62 for switching the deceleration device A
And a clutch lever (64) for turning on and off the traveling transmission is disposed on a side where the reduction gear (A) is displaced.
The traveling device of the mobile agricultural machine described above was used.

[0005]

According to the first aspect of the present invention, the input shaft 19 and the planting drive shaft 32, which are absolutely necessary for the rice transplanter, are used effectively as described above. A speed reducer A capable of speed-changing the rotational power of the input shaft 19 and transmitting the speed reduction to the speed-change shaft 20 is constructed. Since the speed change gears 34 and 35 for controlling the speed change are provided on the gear 20, the reduction gear A and the speed change device can be arranged in parallel on the left and right. In this way, super-low-speed transmission at low cost was realized.

[0006] The invention of claim 2 is as described above,
On the side of the transmission case 18 that is deviated to the left or right,
Since the reduction gear A, the super deceleration lever 62, and the clutch lever 64 for turning on and off the traveling transmission are arranged together, the ridge crossing operation at the time of super deceleration traveling with the operator getting off the aircraft is performed on the left and right sides of the aircraft. These operations can be performed from one side, the operation for crossing the ridge is simplified, and the operations can be performed safely and easily.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a mobile agricultural machine will be described below. As shown in FIGS. 1 to 3, the mobile agricultural machine 1 has an engine 3 mounted in the center of a body frame 2, a steering seat 4 is provided above the engine 3, and a steering handle 5 is provided on a front side of the body frame 2. The left and right front wheels 6, 6 are arranged on the front left and right sides, the left and right rear wheels 7, 7 are arranged on the rear left and right sides, and the rice transplanter 8 is connected to the rear so as to be able to move up and down. ing.

As shown in FIGS. 2 and 3, the traveling transmission device 9 transmits the rotational power input from the engine 3 to the left and right front wheels 6, 6 and the left and right rear wheels 7, 7. , On the front side of the body frame 2. As shown in FIGS. 1 and 2, the main clutch device 11 includes a transmission belt 11a provided between the engine 3 and the intermediate input shaft 12 of the traveling transmission device 9, and a belt tension for tensioning and relaxing the transmission belt 11a. Type clutch 11b, main clutch lever (not shown) for intermittently operating the clutch 11b
It consists of.

The auxiliary transmission 13 includes high and low auxiliary transmission belts 13 a and 13 b provided between the intermediate input shaft 12 and the input shaft 19 of the transmission case 18.
a and 13b are constituted by belt-tensioned sub-transmission clutches 13c and 13d for selectively tensioning and relaxing, and an auxiliary transmission lever 60 for intermittently operating the sub-transmission clutches 13c and 13d. It is a transmission configuration.

The main clutch lever (not shown) and the auxiliary speed change lever 60 are normal tension clutch operation levers which are pressed by a tension spring (not shown) on the entry side and manually operated on the cut side. Then, the main clutch lever (not shown) and the auxiliary speed change lever 60 are configured to be locked by a lock device (not shown) while the clutch is moved to the disengaged position. Note that the main clutch lever (not shown) and the auxiliary speed change lever 60 may be configured as a stepped pedal.

The traveling transmission 9 is configured as shown in FIG. In the transmission case 18, the input shaft 19, the planted rod drive shaft 32, the input shaft 19
Main transmission shaft 20 which is mounted on the right side of
(The left end of the main transmission shaft 20 is supported via a needle bearing at the right end of the input shaft 19), the clutch shaft 21, the front wheel brake shaft 22, the front wheel differential 23,
The left and right wheel transmission shafts 24 are mounted in this order.

A high / low input pulley 25a, 25b is mounted on the outside of the input shaft 19 to input rotational power. An input gear 26 is provided inside the transmission case 18 of the input shaft 19. ing. The planted rod drive shaft 32
A large-diameter deceleration first
A gear 27 and a small-diameter second reduction gear 28 are provided rotatably via bearings.

A small-diameter gear 29 and a large-diameter gear 30, which are integrally formed, are axially slidably mounted on the left end of the main transmission shaft 20 in an axially slidable manner. It is configured to make it. Then, when you slide to the left,
When the small-diameter gear 29 meshes with the first reduction gear 27, the constant-speed rotation power of the input shaft 19 is transmitted to the main transmission shaft 20. When the small-diameter gear 29 slides rightward, the large-diameter gear 30 is moved to the second reduction gear 28. , And the reduction gear A is configured to transmit the reduced rotational power to the main transmission shaft 20.

On the right side of the small-diameter gear 29 and the large-diameter gear 30 of the main transmission shaft 20, there is provided an inter-stock transmission first gear having a slightly different diameter.
Large and small gears 33a and 33b are pivotally mounted on the right side thereof, and a small-diameter low-speed main transmission gear 35 and a large-diameter high-speed main transmission gear 34 are slidably mounted on the right side thereof. On the right side of the second reduction gear 28 and the first reduction gear 27 of the planting drive shaft 32, an integrated inter-stock transmission second large / small gear 3 having a slightly different diameter is provided.
6a and 36b are slidably mounted, and when the inter-stock speed change second large / small gears 36a and 36b are moved to the left, the inter-stock speed change first large gear 33a and the inter-stock speed change second small gear 36b mesh with each other. When the speed change second large / small gears 36a, 36b are moved to the right, the inter-stock speed change first small gear 33b meshes with the inter-stock speed change second large gear 36a, so that the rotational power of the main speed change shaft 20 is slightly shifted and the planting drive is performed. The configuration is such that the transmission is transmitted to the shaft 32 and the planting stock of the rice transplanter 8 is changed.

At the right end of the planting drive shaft 32 and the main transmission shaft 20, a second inter-shift transmission device 37 is provided.
Further, the inter-stock speed is changed, and the planting transmission shaft 3
9 is configured to transmit power. As shown in FIG. 3, a large gear 40 and a small gear 41 are provided at the center of the clutch shaft 21.
A center gear 42 having a center gear 4
The second small gear 41 meshes with the high-speed main transmission gear 34, and the large gear 40 of the center gear 42 meshes with the low-speed main transmission gear 35 alternatively.

On both sides of the center gear 42, there are provided left and right side clutch devices 43, 43 in which left and right side clutch gears slidable in the axial direction are freely disengaged. Outside the left and right side clutch devices 43, 43, a cone or disc type left / right clutch device is provided.
The right side brake devices 44, 44 are provided respectively,
When the outward movement is continued after the right side clutch is disengaged, the brake is activated to apply a braking force to the left and right side clutch gears.

As shown in FIG. 3, the front wheel brake shaft 22 includes a transmission large gear 46 meshing with the small gear 41 and a transmission large gear 46 meshing with the large gear 40 and a front wheel differential device 23 on the transmission lower side. A transmission small gear 45 meshing with the transmission differential gear 23a is axially mounted, and a brake device 47 is configured to be externally operable on one side of the front wheel brake shaft 22.

The left and right front wheels 6 and 6 are provided with the left and right lateral transmission shafts 48 and 48, the left and right vertical transmission shafts 49 and 49, and the left and right vertical transmission shafts 49 and 49 from the front wheel differential 23. And the front wheel brake shaft 2 via left and right front wheel transmissions 50, 50 fitted and supported at the lower end of the case 49 so as to be steerable and turnable.
2 can transmit the braking force. The front wheel differential device 23 includes a differential lock claw (not shown), and the differential lock claw (not shown) can prevent the left and right front wheels 6 and 6 from making a differential. This differential lock claw (not shown) is configured so as to be able to operate in conjunction with operation of the ultra-low speed shifter device 31 so that the travel of the body becomes extremely low. As a result, the drivability of the left and right front wheels 6 and 6 due to the differential between the left and right wheels when the vehicle crosses a ridge, a sudden change in the forward direction of the fuselage, or a danger of falling down can be prevented.

The left and right rear wheels 7, 7 are provided with left and right wheel gears 53, 53 from left and right side clutch devices 43, 43, respectively.
Is transmitted to the left and right wheel transmission shafts 24, 24, and further transmitted to the left and right rear wheel transmission shafts 52, 24.
It is configured to transmit power via the transmission 52. Then left
The right rear wheels 7, 7 are provided with left and right side clutch devices 43, 43.
And the left and right side brake devices 44,
44 is transmitted.

The left and right clutch pedals 55 and 55 have the same configuration as that of the well-known one, and are disposed at a position deviated to the right on the front side of the control seat 4. The left and right side clutch devices 43 and 43 and the left and right -It is operably connected to the right side brake devices 44,44. As shown in FIG. 5, the left and right clutch pedals 55, 55 can be connected by a connecting rod 56 which can be disengaged and disengaged.

Next, the transmission state of the above configuration will be described. First, when the main clutch lever (not shown) is operated to the on position, the rotational power of the engine 3 is transmitted to the high / low input pulley 25 via the main clutch device 11 and the auxiliary transmission device 13.
a, 25b and transmitted to the input shaft 19 of the traveling mission device 9. Next, the rotational power is transmitted from the input gear 26 of the input shaft 19 to the first reduction gear 27, the small-diameter gear 29, the high-speed main transmission gear 34 (or the low-speed main transmission gear 35), and the small gear 41 of the center gear 42 (or the center gear 4).
The normal rotational power is transmitted via the second large gear 40), and normal traveling at the moving speed and the working speed is performed.

Next, the transmission path to one of the left and right rear wheels 7, 7 will be described. The rotational power is supplied to the left and right side clutch devices 43, 43 engaged on both sides of the center gear 42.
Thus, the rotational power is transmitted to the left and right wheel gears 53, 53 of the lower left and right wheel transmission shafts 24, 24, and then the rotational power is further extended rearward to the left and right rear wheel transmission shafts 52, 5.
2, and is transmitted to the left and right rear wheels 7,7.

The rotational power to the other left and right front wheels 6, 6 is:
From the small gear 41 of the center gear 42 to the transmission large gear 46 (or from the large gear 40 to the transmission small gear 45), the front wheel brake shaft 22, the transmission small gear 45, the transmission operation gear 23a, the front wheel differential 23, the left and right sides. The power is transmitted to the transmission shafts 48, 48, the left and right vertical transmission shafts 49, 49, the left and right front wheel transmission 50 in this order, and transmitted to the left and right front wheels 6, 6.

Next, a large-diameter first reduction gear 27, a small-diameter second reduction gear 28, a small-diameter gear 29, and a large-diameter gear 30
The transmission state in which the reduction gear A constituted by the above is decelerated and shifted will be described. The small-diameter gear 29 and the large-diameter gear 30 are slid to the right by the super-deceleration shifter device 31 to engage the large-diameter gear 30 with the second reduction gear 28. Then, the reduced rotation is transmitted from the reduced-diameter second reduction gear 27 to the large-diameter gear 30, the main transmission shaft 20 rotates at a reduced speed, and further, the center gear 42 rotates through the low-speed main transmission gear 35 and the large gear 40. I do. Thus, the following transmission path is the same as above,
It is transmitted to the left and right rear wheels 7, 7 and the left and right front wheels 6, 6, and travels at an extremely low speed. At this time, the differential lock claws (not shown) of the front wheel differential 23 are operated in a related manner, and the left and right front wheels 6 and 6 are locked so as not to be differential.

As described above, the speed reducer A is provided by effectively utilizing the input shaft 19 and the planted rod drive shaft 32, and the input shaft 19
The main transmission shaft 20 which is arranged at the side of the main shaft so as to coincide with the axis center has a high
Since the main transmission B composed of the low main transmission gears 35 and 34 is provided, it is possible to realize a lightweight, low-cost super-reduction transmission with a simple configuration. Next, the configuration of the operation levers will be described.

As shown in FIG. 6, a main transmission lever 58 for operating the high / low speed main transmission gears 34 and 35 constituting the main transmission B is provided on the left side of the handle 5 in the handle post 59. Moving speed position, working speed position,
Can be operated independently in the neutral position and the reverse position. Similarly, a sub-transmission lever 60 for operating the sub-transmission 13 is also provided on the left side of the handle 5 so that the sub-transmission lever 60 can be operated to a high-speed position and a low-speed position. Further, an inter-stock shift lever 61 is also provided on the left side of the handle 5.

A deceleration lever 62 for operating the deceleration device A is provided on the left side of the body, and the left and right clutch pedals 5 are provided.
5, 55 are also provided on the left side of the fuselage. A clutch lever 64 is provided beside the left and right clutch pedals 55, 55, and this clutch lever 64 is
The sub-transmission clutches 13c and 13d are both inoperative by operating the clutch lever 64, and the traveling transmission is interrupted. The clutch lever 64 is linked to a clutch pedal 70 provided at a position deviated leftward on the front side of the control seat 4, and the clutch lever 70 is used during normal work while the operator is sitting on the control seat 4. Can be operated by depressing. The release lever 65 provided in the clutch lever 64 can lock the clutch lever 64 at the lowered position, that is, at the transmission disconnection position. Further, an L-shaped ridge-crossing arm 63 is provided at the front of the body. The ridge crossing arm 63 is configured to be changeable between a storage position indicated by a solid line and a use position protruded forward indicated by a virtual line.

However, when the mobile agricultural machine 1 is decelerated and transmitted over the ridge by decelerating, the sub transmission lever 60 is operated to the low speed position to switch to the low speed transmission, and the main transmission lever 58 is operated to the work speed position to operate the main transmission lever 58 at the work speed position. The transmission B is switched to a low speed. Next, the operator gets off the mobile agricultural machine 1 and
Located on the left side, the deceleration lever 62 is operated to the deceleration position, A is switched to the deceleration side, and then the clutch lever 64 is operated from the transmission off position to the transmission on position. Thus, the mobile agricultural machine 1 is advanced at a very low speed, and the operator moves over the ridge while using the ridge-crossing arm 63 to prevent the front of the machine from rising.

Thus, the operator can operate the deceleration lever 62 and the clutch lever 64 from the front and the left side of the machine when the operator is off the mobile agricultural machine 1, and when performing both of these operations, the operator It is not necessary to move around the fuselage so as to bypass the fuselage, move to the left and right of the fuselage, or once board the fuselage, and operate the deceleration lever 62 and the clutch lever 64.

Since the clutch lever 64 and the brake device 47 of the front wheel brake shaft 22 are connected via the interlocking member 66, the clutch lever 64 is moved over the ridge.
When the vehicle is moved to the transmission cutoff position, the brakes are actuated in relation to the left and right front wheels 6, 6, and the mobile agricultural machine 1 that is moving over the ridge is stopped at that position, so that it is possible to prevent movement to the lower incline side. ,
Safety can be ensured.

[Brief description of the drawings]

FIG. 1 is an overall side view of a mobile agricultural machine.

FIG. 2 is an overall plan view of the mobile agricultural machine with a part omitted.

FIG. 3 is an exploded cross-sectional view of the traveling mission device.

FIG. 4 is an overall plan view of the mobile agricultural machine.

FIG. 5 is a plan view of a main part.

FIG. 6 is a plan view of a main part.

FIG. 7 is a plan view of a main part partially cut away.

FIG. 8 is a side view of a main part.

[Explanation of symbols]

1. Mobile agricultural machine, 2. Body frame, 3. Engine, 4.
Steering seat, 5 ... steering wheel, 6 ... left / right front wheel, 7 ... left / right rear wheel, 8 ... rice transplanter, 9 ... traveling transmission device, 11 ... main clutch device, 11a ... transmission belt, 11b ... clutch, 12 ... Intermediate input shaft, 13: auxiliary transmission, 15: engine output belt, 18: transmission case, 19: input shaft, 20: main transmission shaft, 21: clutch shaft, 22: front wheel brake shaft, 23: front wheel differential, 23a: transmission differential gear, 24: left / right wheel transmission shaft, 25: input pulley,
26: input gear, 27: reduction first gear, 28: reduction second
Gear 29, small-diameter gear 30, large-diameter gear 31, super-deceleration shifter 32, planted rod drive shaft, 33a first inter-stock speed change large gear, 33b inter-stock speed change first small gear, 34 high-speed main speed change Gear 35, low speed main transmission gear, 36a inter-stock speed second large gear, 36b inter-stock speed second small gear, 37 inter-stock speed second device, 38 gear, 39 planted transmission shaft, 40 large gear 41, small gear, 42, center gear, 43, left and right side clutch device, 44, left and right side brake device, 45, small transmission gear, 46, large transmission gear, 47, brake device, 48, left Right lateral transmission shaft, 49 left / right vertical transmission shaft, 50 left / right front wheel transmission, 52 left / right rear wheel transmission, 53 left / right wheel gear, 55 left / right clutch pedal, 56 ... connecting rod, 57 ... operating rod, 58 ... main speed change lever 59 ... handlebar Doo, 60 ... sub shift lever, 61
... inter-stock shift lever, 62 ... deceleration lever, 63 ... ridge crossing arm, 64 ... clutch lever, 65 ... release lever, 66
... interlocking member, A: reduction gear, B: main transmission.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiro Takekawa 1 Eighth-Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Internal F-term (for reference)

Claims (2)

[Claims] 1. A mobile agricultural machine having a main transmission B in a transmission path from an engine 3 to running wheels, wherein an input shaft 19 and a planting drive shaft 32 are arranged in a transmission case 18 in parallel. A transmission shaft 20 is mounted on the lateral side of the input shaft 19 so as to be aligned with the center of the shaft.
Transmission gears 34 and 35 for performing a speed change, and a reduction gear that is capable of shifting the rotational power of the input shaft 19 and transmitting the reduction power to the transmission shaft 20 between the input shaft 19 and the planting drive shaft 32. A traveling device of a mobile agricultural machine provided with A. 2. A speed reducer A provided between the input shaft 19 and the planting drive shaft 32 is displaced to one of left and right sides of the transmission case 18 to switch the speed reducer A. The super deceleration lever 62 for operating and the clutch lever 64 for turning on and off the traveling transmission are connected to the deceleration device A.
The traveling device for a mobile agricultural machine according to claim 1, wherein the traveling device is disposed on a side where the vehicle is displaced.