JP2924044B2 - Operation lever device of riding type agricultural work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a riding type agricultural work machine such as a riding type rice transplanter or a riding type management machine, which is capable of operating a farming machine between a driving state and a non-driving state. The present invention relates to an operation lever device of a riding-type agricultural work machine provided with a lever and an operation lever capable of changing a traveling speed of a riding-type traveling vehicle body.

[Prior Art] Conventionally, in a riding type agricultural work machine in which a farming machine is mounted on a riding traveling vehicle body having a seat and a handle in front of the body of the seat, an operation can be performed to switch the farming machine between a driving state and a non-driving state. A configuration in which levers are provided near the left and right sides of the seat and operation levers for changing the traveling speed of the riding type traveling vehicle body are provided in the left and right sides of the steering wheel, and both operation levers are operated in the longitudinal direction of the aircraft There was something. If the operation lever is configured to be operated in the left-right direction of the machine, there is a surface that makes it difficult to remember which side to operate when operating the operation lever to a desired state. On the other hand, if the operation lever is configured to operate in the front-rear direction of the aircraft, the operator sitting on the seat is in a steering attitude almost toward the front of the aircraft during traveling. When trying to operate the operation lever to the state, it is easy to remember which to operate before and after. In particular, it can be said that this is more remarkable if the operation lever is operated during traveling. Therefore, it can be said that the operation lever of the above-described conventional technique has good operability in terms of the configuration of the operation direction.

[Problems to be Solved by the Invention] When operating a farm work machine in a field, the operation lever that can switch the farm work machine between a driving state and a non-drive state, and a traveling speed of a riding-type traveling vehicle body, The operation lever that can be operated to change the height is operated as follows.

In other words, when the agricultural work machine is running in a straight line with the agricultural machine in the driving state, the traveling speed is increased to increase the work efficiency if the unevenness of the field is small or small, and the work accuracy is reduced if the unevenness of the field is large or large. A relatively large number of operation levers are operated to change the traveling speed, such as lowering the traveling speed so that the traveling speed is not too low. On the other hand, the operation lever for switching the farm work machine between the driving state and the non-drive state is hardly operated during the work traveling after being operated when starting the work traveling, and is in the operation position where the farm working machine is in the driving state. And keep it.

Here, during the work traveling, during the operation of the operation lever for changing the traveling speed, the operation lever for switching the agricultural work machine between the driving state and the non-drive state is brought into contact with the operation lever and the agricultural work machine is unexpectedly turned off. When it is switched to the driving state,
The work is interrupted sometime, and a state in which the aircraft travels occurs. Therefore, the two operation levers should be configured so that the agricultural working machine is not accidentally switched to the non-driving state during the operation of changing the traveling speed.

Next, when working around the ridge and turning the aircraft and turning it back, first reduce the traveling speed to safely rotate the aircraft, switch the agricultural work machine to the non-driving state, and Operate the steering wheel to turn the aircraft. When the turning of the machine is completed, the agricultural work machine is switched to the driving state again and the work traveling is started. In this way, when turning the aircraft, the operating lever that allows the operator to change the traveling speed of the riding type traveling vehicle body while looking at the aircraft traveling direction, and the operation of switching the agricultural work machine between the driving state and the non-driving state The operating lever and the handle that can be operated are continuously operated. Therefore, both operation levers should be provided so that the operation during such complicated turning of the body can be performed as easily as possible.

Here, according to the above-described conventional technology, during work traveling,
An operation lever that can change the traveling speed of the ride-type traveling vehicle body and an operation lever that can switch the agricultural work machine between a driving state and a non-driving state are provided at positions separated from each other, so that the traveling speed can be increased or decreased. At the time of the change operation, there is almost no contact with the operation lever for switching the agricultural work machine between the driving state and the non-driving state, and the above-mentioned unexpected interruption of the operation is unlikely to occur. However, when turning the aircraft, the operating lever that can switch the agricultural work machine between the driven state and the non-driven state is provided on one side of the left and right sides of the seat, so if the operator is not quite skilled, the operator can There is a problem that it is difficult to perform such a continuous operation as described above while observing the traveling direction.

Therefore, the present invention provides an operation lever device for a riding type agricultural work machine provided with an operation lever capable of operating the agricultural work machine to switch between a driving state and a non-driving state, and an operation lever capable of changing the traveling speed of the riding type traveling vehicle body. In the work traveling, when the traveling speed is changed in height, the unexpected work is hardly interrupted as described above, and when the aircraft is turning, the operator looks at the traveling direction of the aircraft. It is an object of the present invention to improve the operability in which the continuous operation as described above can be easily performed.

[Means for Solving the Problems] In order to solve the above-described problems, the present invention provides, as a first means, agricultural work on a riding type traveling vehicle body 1 provided with a seat 4 and a handle 10 in front of the body of the seat 4. In the riding type agricultural work machine equipped with the machine 2, a first operation lever 43 capable of operating the agricultural work machine 2 to switch between a driving state and a non-driving state, and a second operation lever capable of operating the traveling speed of the riding type traveling body 1 to change the height. 44, an operation of switching the farm work machine 2 of the first operation lever 43 between the driving state and the non-driving state, and a second operation lever
The operation of changing the traveling speed of the ride-type traveling vehicle body 1 of 44 is performed in the longitudinal direction of the machine at a position near one of the left and right sides of the steering wheel 10. When operated to the position to be driven, the operation of changing the traveling speed of the riding type vehicle body 1 of the second operation lever 44 on the seat 4 side in the longitudinal direction of the fuselage from the first operation lever 43 is performed. This is an operation lever device for a riding type agricultural work machine.

Further, as a second means, an agricultural work machine 2 is mounted on a riding type traveling vehicle body 1 provided with a seat 4 and a handle 10 in front of the body of the seat 4.
In a riding type agricultural work machine equipped with a first operating lever 43 that can switch the agricultural working machine 2 between a driving state and a non-driving state, and a second operating lever 44 that can change the traveling speed of the riding type traveling vehicle body 1 in height. The operation of switching the farm operating machine 2 between the driving state and the non-driving state of the first operation lever 43 and the operation of changing the traveling speed of the riding type traveling vehicle body 1 of the second operation lever 44 are both performed by the handle 10. The left and right sides of the body are operated in the front-rear direction at positions near one side thereof, and the upper end position of the second operation lever 44 is provided on the upper side of the body from the upper end position of the first operation lever 43. This is an operation lever device of a riding type agricultural work machine.

[Operation and Effect of the Invention] In the operation lever device of the riding type agricultural work machine of the present invention, when the first operation lever 43 is operated, the agricultural work machine 2 is switched between a driving state and a non-driving state, and the second operation lever 44 is operated. When operated, the traveling speed of the riding-type traveling vehicle body 1 is changed in height.
Further, both levers 43 and 44 are operated in the longitudinal direction of the machine at positions near the left and right sides of the handle 10.

In addition, according to the first aspect of the present invention, when the first operation lever 43 is operated to the position where the agricultural work machine 2 is driven, the second operation lever 44 is mounted on the seat 4 side in the vehicle longitudinal direction from the first operation lever 43. An operation of changing the traveling speed of the mold traveling vehicle body 1 is performed by a pilot.

According to the second aspect of the invention, the second operation lever 44 is gripped and operated by the operator on the upper side of the fuselage from the upper end position of the first operation lever 43.

Therefore, the inventions of claim 1 and claim 2 provide an operation for switching the farm operating machine 2 between the driving state and the non-driving state of the first operation lever 43 and a traveling speed of the riding type traveling vehicle body 1 of the second operation lever 44. Since the operation of changing the height is performed in the longitudinal direction of the body at a position near one of the left and right sides of the handle 10, both the first operation lever 43, the second operation lever 44, and the handle 10 It is easy for the operator to continuously operate while looking at the aircraft traveling direction, and the operability is good.

In addition, in the first aspect, when the first operation lever 43 is operated to a position where the agricultural work machine 2 is driven, the riding operation of the second operation lever 44 on the seat 4 side in the vehicle longitudinal direction from the first operation lever 43 is performed. Since the operation of changing the traveling speed of the vehicle body 1 is performed, the upper end position of the second operation lever 44 is provided so as to be located on the upper side of the fuselage with respect to the upper end position of the first operation lever 43. Therefore, during operation, the second operating lever is used to change the running speed.
When operating 44, it is difficult for the first operation lever 43 to come into contact with the first operation lever 43, so that unexpected interruption of the operation is unlikely to occur.

Embodiment An operation lever device of a riding type rice transplanter as one embodiment of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a riding type traveling body, which is connected to a seedling transplanting machine 2 via a link 22 at the rear.

Reference numeral 3 denotes an engine, which is installed below a seat 4 on a body frame 7 that connects the rear axle 5 to the transmission 6. The upper side from the side of the engine 3 is covered with an engine cover 9 provided integrally with the step floor 8. The seat 4 is provided on the cover 9.

Reference numeral 10 denotes a steering handle, which is disposed in front of the seat 4 and fixed to the front of the transmission 6.
It is connected to the upper end of a steering shaft 12 extending upward from inside. When the steering handle 10 is turned, the steering shaft 12 is also turned integrally.

Reference numeral 13 denotes a subtransmission, which is disposed on the front side of the steering gear case 11. The sub-transmission 13 transmits the rotational output generated from the engine 3 to a drive shaft 13 a that rotationally drives a hydraulic pump via a transmission shaft 14, and connects between the drive shaft 13 a and an input shaft 13 b that inputs power to the transmission 6. Is transmitted by a belt. That is, the transmission mechanism of the auxiliary transmission 13 includes pulleys 13c and 1 having different diameters on the drive shaft 13a and the input shaft 13b.
4c 'and 13d, 13d' are arranged in the axial direction, respectively, and the belts 13e, 13e 'applied to these pulleys make the belts in a transmission state or a non-transmission state by tension rollers 13f, 13f' corresponding to the belts. It is a mechanism that selectively applies tension, and is a mechanism that can change the reduction ratio in multiple stages. When the belt 13e wrapped around the front pulleys 13c and 13d is in the transmission state, that is, when the tension roller 13f is switched to apply tension to the belt 13e, the speed is reduced, and conversely, the rear pulleys 13c 'and 13d'. When the belt 13e 'put on the belt 13e' is put in the transmission state, that is, when the tension roller 13f 'is switched to apply tension to the belt 13e', high-speed shifting is performed.

This sub-transmission switching is performed by operating a sub-transmission lever 44 described later. When the sub-transmission lever 44 is rotated forward, the lever arm 44a which rotates integrally with the lever fulcrum side is provided.
Rotates the cam shaft 13g "provided with the low-speed operation cam 13g and the high-speed operation cam 13g '. Thus, the high-speed operation cam 13g' is provided on the high-speed operation arm shaft 13h. The high-speed operation arm 13h 'is rotated by contacting the roller 13h "of the arm with the rod 13i'.
, The high-speed tension arm 13j 'rotates in conjunction with the tension arm shaft 13j "fulcrum, and the tension roller 13f' provided at the distal end of the arm moves in the belt tension direction for transmitting the belt 13e 'to the transmission state. When the sub-transmission lever 44 is returned to the rear side, the low-speed operation cam 13g, the operation arm 13k 'provided on the low-speed operation arm shaft 13k, and the roller are similarly operated. 13
In conjunction with the path of k ″, rod 13i, and low-speed tension arm 13j, the tension roller 13f moves in the belt tension direction for transmitting the belt 13e, and is shifted to the low-speed side.

The power transmitted to the mission 6 is transmitted to the traveling and working machine system.

Reference numerals 15 and 15 denote front wheels, which are mounted on lower cases 16b and 16b of front wheel transmission cases vertically arranged on both left and right sides of the transmission case 6, respectively. The rotation is transmitted to the left and right front wheels 15 and 15 via the transmission mechanism in the front wheel transmission cases 16a and 16b via the operating device while being decelerated in the mission 6. Also, front wheel 1
Reference numerals 5 and 15 are provided as steered wheels so as to be rotatable left and right. That is, the lower front wheel transmission case 16b is fixed to the upper front wheel transmission case 16a fixed to the transmission case 6.
The lower case has a knuckle arm which rotates in conjunction with the rotation of the steering handle 10.
17 is connected via a rod 18 so that the front wheels 15, 15 rotate in response to the rotation of the steering handle 10.

Reference numerals 19, 19 denote rear wheels, which are mounted on the rear of rear wheel transmission cases 20, 20 provided on both left and right sides of the rear axle 5. Power is transmitted from the inside of the transmission 6 to the rear axle 5 by the transmission shaft 21, and the rotation is transmitted to the left and right rear wheels 19, 19 via the transmission mechanism in the rear wheel transmission cases 20, 20 via the differential device in the rear axle 5. Have been.

21 is a hydraulic piston. The base side of the hydraulic cylinder of the hydraulic piston 21 is pivotally supported at the rear of the rear axle 5, and the tip of the piston rod is pivotally mounted near the base of the upper link 22 a of the elevating link 22 connecting the traveling vehicle 1 and the work implement 2 on the traveling vehicle 1 side. Have been. When oil flows into and out of the cylinder of the hydraulic piston 21, the piston rod protrudes and retreats, the elevating link 22 moves up and down with the traveling vehicle body 1 as a pivot point, and the work implement moves up and down.

The elevating link 22 has a traveling body side link base 23 in which an upper link 22a made of one wide and thick leaf spring and a lower link 22b made of one steel square bar are fixed to the rear case 5 on the traveling body 1 side. A work implement side link base 24 that supports the work implement 2 so as to freely roll in the left and right direction is connected to the work implement 2 side.

Reference numeral 25 denotes a work machine transmission shaft, which transmits the rotational power of the PTO shaft taken out of the transmission 6 to the drive shaft of the work machine 2 via a universal joint.

Numeral 26 denotes a seedling mounting table, which is slidably mounted on a rail fixed to the planting portion transmission case 27 so as to be inclined so that the front side is on the upper side and the rear side is on the lower side. Transmission case
The seedling mounting table 26 reciprocates left and right by the left and right reciprocating mechanism in 27 and supplies seedlings one by one to the planting devices 28 in accordance with the planting cycle.

The planting device 28 is composed of two planting transmission frames extending rearward from the left and right ends of the planting portion transmission case 26, respectively.
At the rear side of 29, 29, it is attached to the left and right sides by two lines, and a total of four lines are attached. Planting equipment for each strip 28 ...
The power of the transmission case 26 is transmitted via the chain transmission mechanism in the planting transmission frames 29, 29. The planting device 28 includes a rotating case 30 and two planting tools mounted on the rotating case 30.
It is composed of 31, 31. Planting claws 31a, 31a of the two planting tools 31, 31, respectively, are provided, and the tips thereof perform a motion that draws an elliptical trajectory by rotation transmission of a gear train in the case accompanying rotation of the rotating case 30. The seedlings are taken one by one according to the supply of seedlings on the seedling mount 26 and planted in the field.

32, 32 are left and right leveling floats, planting transmission frame 2
It is hung below 9, 29, respectively, and slides while leveling the muddy surface of the planted field.

Reference numeral 33 denotes an operation panel, which is disposed below the steering handle 10. The lower side of the panel 33 is covered with a panel cover 33a.

Reference numeral 34 denotes a steering post, which indicates the steering shaft 12. Post cover around the outer periphery of this post 34
Covered with 34a. The width of the cover 34a in the left, right, front and rear directions is provided to be smaller than the outer diameter of the handle 10. As a result, when the operator moves or works around the steering wheel 10, there is room for the foot space, and even if it is measured by miniaturization of the aircraft, the space at the foot of the driver may impair habitability. It is a configuration that is secured without. In addition, this configuration is particularly effective when the farm work machine is operated in farm work in which the work environment is extremely variable because visibility in the front, particularly in the front lower side near the body, is extremely good. This post cover
A step floor 8 serving as a scaffold for the operator extends from the periphery of the lower side of the seat 4 around the lower end base of 34a, so that the operator can stand around the operation handle 10.

Reference numeral 35 denotes a boarding step, which is provided integrally with the step floor 8 below the left and right sides of the seat 4 of the traveling vehicle body 1.

Reference numeral 36 denotes a front riding step, which is provided on both left and right sides in front of the traveling vehicle body 1. This front riding step 36, 36,
It is composed of heavy objects and also serves as a balance weight.
It is easy to get on and off from the front side of the traveling body 1 as well as from 35 and 35. Further, the steps 36, 36 are mounted so as to be sandwiched therebetween so as to protect the sub-transmission 13, and the lower side of the sub-transmission 13 between the steps is covered with a cover 37.

38 is a clutch pedal, 39a and 39b are left and right brake pedals for the rear wheel, 40 is a differential lock pedal, each of which is an operation panel
It is located below and to the left and right of 33.

Reference numeral 41 denotes a main transmission lever, which extends to the left of the handle 10. The base of the lever 41 is erected from near the base of the post cover 34a, and extends upward near the side of the post cover 34a. The upper end of the lever 41 extends to the vicinity of the handle 10 and is bent and extended so as not to overlap the inside of the handle 10 in plan view but to be located outside the handle 10.

42 is a throttle lever, which controls the engine speed via a wire.

Reference numeral 43 denotes a working machine lever, which serves both as a lever for operating the hydraulic cylinder for raising and lowering the working machine 2 and a lever for operating on and off of a planting clutch provided in a transmission path for driving the seedling planting working machine 2. Also, a hydraulic, planting lever.
A lever arm 43a that rotates integrally is provided on the rotation fulcrum side of the lever 43, and a hydraulic wire 43c connected to a valve that operates the hydraulic cylinder 21 and a planting clutch are connected to a wire operating cylinder 43b that rotates in conjunction therewith. The planting clutch wire 43d to be connected is connected. When the work implement lever 43 has moved to the most operation position (P4), the work implement 2 is interlocked with the planting clutch so that the work equipment 2 is switched to the driving state, and on the other hand, is pulled to the last operation position (P1). When it is returned, the working machine 2 is linked to the hydraulic valve so as to be raised by the hydraulic cylinder 21. Further, from the rearmost position of the operation (P1) to the frontmost position of the operation (P4), the work implement 2 is vertically fixed (lever position (P2)) in order from the rear side to the front side,
An operating position for lowering the work machine 2 and disengaging the planting clutch (lever position (P3)) is provided.

Reference numeral 44 denotes a sub-transmission lever, which is symmetrical to the main transmission lever 42 on the right and left opposite sides of the post cover 34a, and similarly extends along the post cover 34a to the outside and near the handle 10. As described above, when the sub-shift lever 44 is operated forward, the speed is shifted to the high speed side, and when it is returned to the rear side, the speed is shifted to the low speed side.

The work implement lever 43 and the auxiliary shift lever 44 are both arranged side by side so as to operate the lever in the front-rear direction, and the auxiliary shift lever 44 is disposed outside the work implement lever 43. Also, the working machine lever
When the operating lever 43 is moved to the operating position at which the work implement 2 is switched to the driving state, that is, to the foremost position of the lever operating range, the operating foremost position of the working base lever 43 is set to the operating foremost position of the auxiliary transmission lever 44 (this embodiment). (In the example, on the high-speed side), that is, the operation position of the auxiliary transmission lever 44 is closer to the seat 4 than the operation position of the work implement lever 43.

In addition, the vertical position of the upper end of the sub-transmission lever 44 is
The work implement lever 43 is disposed so as to be located above the upper and lower positions at the upper end thereof.

As described above, according to the embodiment of the present invention, the operation of switching the seedling transplanting working machine (agricultural working machine) 2 of the working machine lever (first operating lever) 43 between the driving state and the non-driving state, and the operation of the auxiliary transmission lever (second operating lever) The operation of the operating lever 44 for changing the traveling speed of the riding-type traveling vehicle body 1 is also performed in the longitudinal direction of the body at a position near one of the left and right sides of the steering wheel 10. The operator can easily operate the machine lever (first operation lever) 43, the auxiliary speed change lever (second operation lever) 44, and the handle 10 continuously while observing the traveling direction of the machine body, and the operability is good.

Moreover, when the working machine lever (first operating lever) 43 is operated to a position where the seedling transplanting working machine (agricultural working machine) 2 is driven, the seat 4 is moved from the working machine lever (first operating lever) 43 in the longitudinal direction of the machine. The upper side position of the auxiliary transmission lever (second operation lever) 44 is provided so that the operation of changing the traveling speed of the riding type traveling vehicle body 1 of the auxiliary transmission lever (second operation lever) 44 is performed on the side. Is provided so as to be located on the upper side of the fuselage from the upper end position of the working machine lever (first operating lever) 43. Therefore, during work traveling, the sub-transmission lever (second operating lever) 44 is used to change the traveling speed. When operating, it is difficult for the working machine lever (first operating lever) 43 to come into contact with the working machine lever 43, so that unexpected work interruption is unlikely to occur.

[Brief description of the drawings]

 FIG. 1 shows an embodiment of the present invention. FIG. 1: Side view showing the riding type rice transplanter of the embodiment FIG. 2: Front view showing the riding type rice transplanter of the embodiment FIG. 3: Side view showing the configuration of the auxiliary transmission FIG. FIG. 5: Side view showing lever operating state. Reference numerals in the figure will be briefly described. 1: Ride-type traveling vehicle body 2: Seedling planting work machine 4: Seat 10: Handle 43: Work machine lever 44: Sub transmission lever

Continuing from the front page (72) Inventor, Hisashi Kamiya 1-Yakura, Tobe-cho, Iyo-gun, Ehime Pref. Inspector, Iseki Agricultural Machinery Co., Ltd. Examiner Shoji Yamada (58) Field surveyed (Int.Cl. ⁶ , DB name) A01C 11 / 02 A01B 71/00-71/08

Claims (2)

(57) [Claims] 1. A seat 10 and a steering wheel 10 in front of the body of the seat 4.
A first operating lever 43 for switching the agricultural working machine 2 between a driving state and a non-driving state in a riding type agricultural working machine in which the agricultural working machine 2 is mounted on the riding type traveling body 1 provided with A second operation lever 44 capable of changing the speed of the vehicle; providing an operation of switching the agricultural working machine 2 of the first operation lever 43 between a driving state and a non-driving state; When the operation of changing the speed is operated in the longitudinal direction of the machine at a position near one of the left and right sides of the handlebar 10, and when the first operation lever 43 is operated to a position where the agricultural work machine 2 is driven. A second embodiment of the riding type agricultural work machine, wherein an operation of changing the traveling speed of the riding type traveling body 1 of the riding type traveling body 1 of the second operation lever 44 is performed on the seat 4 side in the vehicle longitudinal direction from the first operation lever 43. Operation lever device Place. 2. A seat 4 and a steering wheel 10 in front of the body of the seat 4.
A first operating lever 43 for switching the agricultural working machine 2 between a driving state and a non-driving state in a riding type agricultural working machine in which the agricultural working machine 2 is mounted on the riding type traveling body 1 provided with A second operation lever 44 capable of changing the speed of the vehicle; providing an operation of switching the agricultural working machine 2 of the first operation lever 43 between a driving state and a non-driving state; Both the operation of changing the speed and the operation in the front-rear direction of the body at a position near one of the left and right sides of the steering wheel 10, and the upper end position of the second operation lever 44 is higher than the upper end position of the first operation lever 43. An operation lever device for a riding type agricultural work machine, which is provided to be located on an upper side.