JPH03228610A - Device for operating lever of riding type agricultural working machine - Google Patents

Abstract

PURPOSE:To facilitate change of hold from one to the other of both a working machine lever and an auxiliary speed changing lever without disturbing mutual operation by arranging both the levers near a handle side by side. CONSTITUTION:Both a working machine lever 43 and an auxiliary speed changing lever 44 are arranged side by side so as to perform lever operation in the fore-and-aft direction and the auxiliary speed change lever 44 are arranged on the outside of the working machine lever 43. The auxiliary speed change lever 44 is arranged so as to locate the operating forefront position thereof at a closer position to a seat than the operating forefront position of the working machine lever 43. Furthermore, the tip of the auxiliary speed change lever 44 is arranged so as to vertically move to the upper and lower positions thereof above the upper and lower positions of the tip of the working machine lever 43. Thereby, hold can be readily changed from one to the other of mutual levers to improve the operating efficiency.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an operation lever device provided on the traveling body side of a riding agricultural machine such as a riding rice transplanter or a riding management machine, and in particular, to an operating lever device provided on the traveling body side of a riding agricultural machine such as a riding rice transplanter or a riding management machine. The present invention relates to an operating lever device such as a work machine lever for driving or raising/lowering a work machine.

[Prior Art] Conventionally, an agricultural machine is connected via a link to the rear side of a passenger-type traveling vehicle body provided with a pair of left and right front wheels and a pair of left and right rear wheels, and an operator's seat is provided on the traveling vehicle body. In a riding agricultural machine with a handle installed upright in front of the seat, an auxiliary gear shift lever is arranged on either the left or right side of the handle,
Some models had a work equipment lever on either side of the seat to raise or lower the work equipment or turn the drive on or off.

[Problem to be solved by the invention] When operating a riding-type agricultural machine to work in a field such as a paddy field, it is necessary to operate the machine in accordance with the working conditions and the conditions of the working field. In order to adjust the traveling speed, the auxiliary gear shift lever must be operated primarily. On the other hand, the work equipment lever, which raises and lowers the work equipment and turns the drive on and off, is only operated when the vehicle body reaches the edge of the field and turns. There is no need to operate it. Therefore, it is required that the sub-shift lever and the work implement lever be disposed at positions where they do not interfere with each other's operations.

However, when operating the machine continuously from operating state to turning the machine and back to operating state of the work equipment, it is necessary to operate the sub-shift lever to the low speed side, raise the work equipment, and switch off the drive of the work equipment. The operation of the machine lever, the turning operation of the handle, etc., the operation of the work machine lever to lower and drive the work machine after turning, and the speed adjustment operation of the sub-shift lever are complicated.

For this reason, it is also required that the sub-shift lever and the work implement lever be disposed at positions where they can be quickly changed.

In the conventional operating lever device, the sub-shift lever and the work implement lever are separated from each other, so their mutual operations are not hindered. However, when turning, the levers are too far apart, making it difficult to change the lever and making it difficult to operate. On the other hand, if the sub-shift lever and the work equipment lever are disposed close to each other, the levers can be easily changed, but they interfere with each other's operations, resulting in reduced operability.

As described above, the auxiliary gear shift lever and work equipment lever of a riding agricultural machine are arranged so as to satisfy the conflicting demands of not interfering with each other's operations and also making it easy to change the grip of both levers. There was a problem that it had to be established.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a rear side of a passenger type vehicle body 1 provided with a pair of left and right front wheels 15.15 and a pair of left and right rear wheels 19.19. In a riding type agricultural machine, an agricultural machine 2 is connected to the machine via a link 22, an operator's seat 4 is arranged on the traveling vehicle body 1, and a handle 10 is provided upright in front of the seat 4. A work implement lever 43 that can be operated in the front-rear direction to at least turn on and off the drive of the work implement 2 is provided on one left and right side of the work implement lever 43.
is switched to the driving state, and
The work machine lever 43 is located near the work machine lever 43.
A riding agricultural working machine characterized in that an auxiliary gear shift lever 44 is provided such that its operating direction is parallel to the operating position of the working machine lever 43, and its operating foremost position is closer to the seat 4 than the operating foremost position of the working equipment lever 43. This is a control lever device.

Alternatively, as another means, the passenger type traveling vehicle body 1 is provided with a pair of left and right front wheels 15.15 and a pair of left and right rear wheels 19.19.
In a riding type agricultural machine in which a farm machine 2 is connected to the rear side via a link 22 and a handle 10 is provided upright on the traveling vehicle body 1, at least one of the left and right sides of the handle 10 is provided with a drive on/off switch for the work machine 2. A work equipment lever 43 is provided, and a sub-shift lever 44 is provided in the vicinity of the work equipment lever 43 so that its upper end vertical position is located above the upper end vertical position of the work equipment lever 43. This is an operating lever device for a riding agricultural machine, which is characterized by:

[Effects of the Invention] Since the working machine lever 43 and the sub-shift lever 44 are arranged in parallel near the handle 10, the levers can be easily switched between the levers when turning the machine body, resulting in very good operability.

Further, when the work equipment lever 43 is moved to the most forward position for driving the work equipment 2, the sub-shift lever 44 can be operated at a position closer to the seat 4 than the most forward position of the work equipment lever 43. It is provided. Now, when the work equipment is in operation and the sub-shift lever 44 is mainly operated, the sub-shift lever 44 will not be operated beyond the frontmost position of the work equipment lever 43, so the work equipment lever 43 will not hinder you.

In addition, as another means, the upper end of the sub-shift lever 44 may be
It is provided so as to be located above the vertical position of the upper end portion of the work machine lever 43. This is also because when the work machine is operating, which mainly operates the sub-shift lever 44, the sub-shift lever 44 is not operated beyond the frontmost position of the work machine lever 43, so the work machine lever 43 will not be hindered.

As described above, by arranging the auxiliary gear shift lever and the work equipment lever for a riding agricultural machine, it is possible to achieve an arrangement that satisfies the conflicting demands of not interfering with each other's operations and also making it easy to change the grip of both levers. became.

[Embodiment] An embodiment of the present invention for a riding rice transplanter as an example of a riding agricultural machine will be described in detail with reference to the drawings.

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

Reference numeral 3 denotes an engine, which is installed below the seat 4 on the fuselage frame 7 that connects the rear axle 5 and the transmission 6. The upper side of the engine 30 is covered with an engine cover 9 that is integrally provided with the step floor 8. The seat 4 is provided on its cover 9.

Reference numeral 10 denotes a steering handle, which is arranged in front of the seat 4 and a steering gear case 1 fixed to the front of the transmission 6.
The steering shaft 12 is connected to the upper end of a steering shaft 12 extending upward from inside the steering shaft 12 . When the steering handle 10 is rotated, the steering shaft 12 is also rotated integrally.

Reference numeral 13 denotes a sub-transmission device, which is disposed on the front side of the steering gear case 11. In the sub-transmission device 13, rotational output generated from the engine 3 is transmitted via a transmission shaft 14 to a drive shaft 13a that rotationally drives a hydraulic pump.
a and an input shaft 13b that inputs power to the transmission 6 through belt transmission. That is, the transmission mechanism of this sub-transmission device 13 has pulleys 13C11 port C°, 13d, and 13d' of different diameters arranged on the drive shaft 13a and the input shaft 13b, respectively, superimposed in the axial direction, and the A mechanism that selectively applies tension to put the belt in a transmission state or a non-transmission state by means of tension rollers 13f and 13f' corresponding to the belts 13e and 13e',
It has a mechanism that allows you to change the reduction ratio in multiple stages. When the belt 13e hooked on the front pulleys 13c and 13d enters the transmission state, that is, when the tension roller 13f switches to apply tension to the belt 13e, a low speed shift occurs, and conversely, the rear pulley 13c
When the belt 13e' applied to the belts ' and 13d' enters the transmission state, that is, the tension roller 13f'
When the gear is switched to apply tension to 3e', high-speed shifting occurs.

This sub-shift changeover is performed by operating a sub-shift lever 44, which will be described later. When the sub-shift lever 44 is rotated forward, the lever arm 44 on the lever fulcrum side rotates together with the lever arm 44.
By a, operating cam 13g for low speed and operating cam 1 for high speed
The cam shaft 13g'' provided with a 3g'' rotates. As a result, the high-speed operation cam 13g° rotates the high-speed operation arm 13h'' provided on the high-speed operation arm shaft 13h, and the roller 13h of that arm. The high-speed tension arm 13j rotates in conjunction with the fulcrum of the tension arm shaft 13j through the rod 131°, and the tension roller 13f' provided at the tip of the arm The belt 13e is moved in the direction of the belt tension to bring it into a transmission state, and the gear is shifted to the high speed side.If the sub-shift lever 44 is returned to the rear side, the low speed operation cam 13g and the low speed operation cam 13g are similarly activated. Operation arm shaft 13
k and the roller 13 on the operating arm 13
k” rod 13i, tension arm 1 for low speed
3j, the tension roller 13f moves in the belt tension direction that puts the belt 13e in a transmission state, and is shifted to a lower speed side.

The power transmitted to Mission 6 is transmitted to the travel and work equipment systems.

15. 15 is a front wheel, lower cases 16b and 1 of the front wheel transmission case vertically arranged on both left and right sides of the transmission case 6.
6b. The speed is reduced in the transmission 6, and the rotation is transmitted to the left and right front wheels 15.15 via the differential gear and the transmission mechanism in the front wheel transmission cases 16a, 16b. Further, the front wheels 15.15 are provided as steering wheels so as to be rotatable left and right. That is, with respect to the upper front wheel transmission case 16a fixed to the transmission case 6,
A lower front wheel transmission case 16b is rotatably provided, and a knuckle arm 17 that rotates in conjunction with the rotation of the operating handle 10 is connected to the lower case via a rod 18. , the front wheels 15.15 rotate in response to the rotation of the control handle 10.

Reference numeral 19.19 denotes a rear wheel, which is mounted on a shaft behind rear wheel transmission cases 20.20 provided on both left and right sides of the rear axle 5. Power is transmitted from the transmission 6 to the rear axle 5 by the transmission shaft 21, and rotation is transmitted to the left and right rear wheels 19.19 via the differential device in the rear axle 5 and the transmission mechanism in the rear wheel transmission case 20.20. It is being

21 is a hydraulic piston. The base side of the hydraulic cylinder of the hydraulic piston 21 is pivotally supported on the rear part of the rear axle 5, and the tip of the piston rod is pivoted near the base on the side of the traveling vehicle body 1 of the upper link 22a of the lifting link 22 that connects the traveling vehicle body 1 and the work equipment 2. has been done. As oil flows into and out of the cylinder of the hydraulic piston 21, the piston rod protrudes and retires, the elevating link 22 moves up and down with the traveling vehicle body 1 as a rotational fulcrum, and the working machine moves up and down.

The elevating link 22 has an upper link 22a made of - wide and thick leaf springs, and a lower link 22b made of - steel squares, attached to a link base 23 on the vehicle body side that is fixed to the carrier case 5 on the vehicle body 1 side. A link base 24 is connected to the working machine 2 as a link rotation fulcrum, and supports the working machine 2 so as to be able to roll left and right.

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

Reference numeral 26 denotes a seedling stand, which is mounted so as to be slidable left and right on a rail fixed to the planting section transmission case 27 so that the front side is on the upper side and the rear side is on the lower side. The seedling platform 26 reciprocates left and right by a left-right reciprocating mechanism in the transmission case 27, and supplies seedlings one by one to the planting device 28 in accordance with the planting cycle.

The planting device 28... is attached to the rear side of two planting transmission frames 29 and 29 extending rearward from the left and right ends of the planting section transmission case 26, respectively, in two rows on both the left and right sides. 4 rows are installed. For planting each row, the power of the transmission case 26 is transmitted to the apparatus 28 through a chain transmission mechanism in the planting transmission frame 29, 29. Further, the planting device 28 includes a rotating case 30 and two planting tools 31 and 31 attached thereto.

A planting claw 31a is attached to each of these two planting tools 31.31.
, 31a are provided, the tips of which move in an elliptical trajectory due to the rotation of the gear train in the case as the rotating case 30 rotates, and seedlings are placed one by one in accordance with the seedling supply from the seedling stand 26. Take them and plant them in the field.

32. 32 are left and right soil leveling floats, which are each suspended from the lower side of the planting transmission frame 29, 29, and the planting machine slides while leveling the washbasin of the field.

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

34 is a steering post, which is connected to the steering shaft 12.
is supported. The vicinity of the outer periphery of this post 34 is covered with a post cover 34a. Further, the left and right, front and rear widths of the cover 34a are narrower than the outer diameter of the handle 10. As a result, when the operator moves or works around the handlebar 10, there is plenty of space for the operator's feet, and even if the aircraft is made smaller, the space for the operator's feet will not impair the comfort. The configuration is such that it is secured without any problems. Also,
This configuration is particularly effective when operating an agricultural machine in agricultural work where visibility of the front, especially the lower front near the machine body, is very good, and the work environment is extremely varied. A step floor 8, which serves as a foothold for the operator, extends from the lower side of the seat 4 around the base of the lower end of the post cover 34a, so that the operator can also stand around the operating handle 10. .

Reference numeral 35 denotes a riding 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 front riding steps, which are provided on both left and right sides of the front of the traveling vehicle body 1. This front ride step 36.36
is made up of a heavy object and also serves as a balance weight, and its base is fixed to the transmission 6, making it easy to get on and off not only from the boarding steps 35 and 35 but also from the front side of the traveling vehicle body 1. Also, step 36.36
is installed so as to be sandwiched between - to protect the sub-transmission device 13, and the sub-transmission device 13 between the steps is
The lower side of is covered with a cover 37.

38 is a clutch pedal, 39a and 39b are rear wheel left and right brake pedals, and 40 is a differential lock pedal, which are respectively disposed on the left and right sides below the operation panel 33.

Reference numeral 41 denotes a main shift lever, which extends to the left side of the handle 10. The base of this lever 41 is connected to the post cover 3
It is erected from near the base of the post cover 34a and extends upward close to 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 to be positioned outside the handle 10 without overlapping the inside of the handle 10 in plan view.

42 is a throttle lever that adjusts the engine speed via a wire.

Reference numeral 43 denotes a work machine lever, which serves as a lever for operating a hydraulic cylinder that raises and lowers the work machine 2, and a lever for operating a planting clutch provided in a transmission path for driving the seedling planting work machine 2. There is also a hydraulic, planting lever.

A lever arm 43a that rotates integrally is provided on the rotational fulcrum side of this lever 43, and a hydraulic wire 430 connected to a valve that operates the hydraulic cylinder 21 is connected to a wire operation tube 43b that rotates in conjunction with the lever arm 43a, and a planting clutch is activated. A planting clutch wire 43d is connected to the planting clutch wire 43d. Furthermore, when the work equipment lever 43 moves to the frontmost operation position (P4), it is interlocked and connected to the planting clutch as if the work equipment 2 were switched to the driving state, and conversely, it is pulled to the last operation position (Pl). When returned, the hydraulic cylinder 21 is connected to the hydraulic valve so that the working machine 2 is raised. Furthermore, from the last operation position (Pl) to the frontmost operation position (P4
), from the rear side to the front side, there are operating positions in which the work machine 2 is fixed up and down (lever position (P2)), the work machine 2 is in T1, and the planting clutch is released (lever position (P3)). ing.

Reference numeral 44 denotes a sub-shift lever, which is located on the opposite left and right side of the post cover 34a symmetrically to the main shift lever 42, and is shaped like a handle along the post cover 34a.

The work machine lever 43 and the sub-shift lever 44 are both arranged side by side so that the levers can be operated in the front-rear direction, and the sub-shift lever 44 is arranged outside the work machine lever 43. Further, when the work equipment lever 43 is moved to the operation position where the work equipment 2 is switched to the driving state, that is, the most forward position of the lever operation range, the operation most position of the work base lever 43 is the same as that of the sub-shift lever 44. It is located in front of the most operational position (high speed side in this embodiment), that is, the most operational position of the sub-shift lever 44 is located closer to the seat 4 than the most operational position of the work equipment lever '43. ing.

Further, the vertical position of the upper end of the sub-shift lever 44 is as follows.
It is arranged so as to be located above the vertical position of the upper end portion of the work machine lever 43.

As described above, in the embodiment of the present invention, the work equipment lever 43 and the auxiliary gear shift lever 44 are arranged in parallel near the handle 10, so that when the machine body is turned, the levers can be easily switched between the two levers. Very good quality.

Further, when the work equipment lever 43 is moved to the most forward position for driving the work equipment 2, the sub-shift lever 44 can be operated at a position closer to the seat 4 than the most forward position of the work equipment lever 43. It is provided. When the work machine is in operation, which mainly operates the sub-shift lever 44, the sub-shift lever 44 is not operated beyond the frontmost position of the work machine lever 43, so the work machine lever 43 will not hinder you.

In addition, as another means, the upper end of the sub-shift lever 44 may be
It is provided so as to be located below the vertical position of the upper end portion of the work machine lever 43. This is also because when the work machine is operating, which mainly operates the sub-shift lever 44, the sub-shift lever 44 is not operated beyond the frontmost position of the work machine lever 43, so the work machine lever 43 will not be hindered.

Therefore, by arranging the auxiliary gear shift lever 44 and the work equipment lever 43 of the riding type agricultural work machine, it is possible to achieve an arrangement that satisfies the conflicting demands of not interfering with each other's operations and also making it easy to change the grip of both levers. Ta.

[Brief explanation of drawings]

The figure shows one embodiment of the invention. Fig. 1: Side view showing the riding-type rice transplanter of the embodiment Fig. 2:
Figure 3: Front view showing the riding type rice transplanter of the embodiment. Figure 4: Side view showing the configuration of the sub-transmission device. Figure 4: Front view showing the configuration of the sub-transmission device. Figure 5: Half side view showing the lever operation state. The symbols in the figure will be briefly explained. 1: Riding vehicle body 2: Seedling planting machine 4: Seat
10: Handle 15.15: Front wheel 1
9.19: Rear wheel 22: Lifting link 43: Work equipment lever 44: Sub-shift lever

Claims (2)

[Claims] (1) A pair of left and right front wheels 15, 15 and a pair of left and right rear wheels 19
, 19 are provided on the rear side of the passenger type traveling vehicle body 1.
In a riding type agricultural machine, an agricultural machine 2 is connected to the vehicle via a vehicle body 1, an operator's seat 4 is disposed on the traveling vehicle body 1, and a handle 10 is provided upright in front of the seat 4.
A work implement lever 43 that can be operated in the front and back direction to at least turn on and off the drive of the work implement 2 is provided on one of the left and right sides of 0, and when the work implement lever 43 is moved to the frontmost operation position, the work implement 2 is in the driving state. In addition, near the work equipment lever 43, the operation direction is parallel to the work equipment lever 43, and the frontmost operation position is more than the frontmost operation position of the work equipment lever 43. An operating lever device for a riding agricultural machine, characterized in that a sub-shift lever 44 is provided at a position close to a seat 4. (2) A pair of left and right front wheels 15, 15 and a pair of left and right rear wheels 19
, 19 are provided on the rear side of the passenger type traveling vehicle body 1.
In a riding type agricultural working machine, in which an agricultural working machine 2 is connected to the agricultural working machine 2 through a vehicle body 1, and a handle 10 is provided upright on the traveling vehicle body 1, there is provided a working machine lever on either the left or right side of the handle 10, which can turn on/off the drive of the working machine 2 at least. 43 is provided, and
A riding type agricultural working machine characterized in that a sub-shift lever 44 is arranged in the vicinity of the working machine lever 43 so that the upper end vertical position is located above the upper end vertical position of the working machine lever 43. operating lever device.