JPS6016504A - Plowing pawl used in deep plowing apparatus of walking type agricultural plowing vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilling claw used in a deep tilling device in a walk-behind agricultural vehicle for performing deep tilling work (tilting depth of 30c111 or more) required in tea plantations, orchards, etc. .

In tea gardens, orchards, etc., it is necessary to perform deep plowing work to stir and bury compost etc. into the soil, as well as cutting the roots that have grown into the soil and cutting the roots to allow new roots to grow. This is well known, but since such management work must be carried out using a small walking farm vehicle, it is difficult to satisfactorily carry out such deep plowing work with a small, lightweight, small machine with low horsepower. This is extremely difficult, and no small agricultural vehicle that can perform this deep plowing work has yet been developed.

In other words, in the case of a rake-type deep tiller, the tilling depth is insufficient, and if the tiller is plowed too deeply, the progress of the machine will be hindered and the running wheels will slip, resulting in a failure rate. The reality is that it has many shortcomings and problems in practical terms, such as extremely inadequate work in burying and root cutting, and in fields with hard surfaces, a danosing phenomenon in which the machine body flies forward occurs. be.

The present invention proposes a tilling claw used in a deep tilling device of a walk-behind agricultural vehicle that is capable of completely performing such deep tilling work. It has a transmission case for transmitting power to the wheels and the upper rotary shaft of the tilling section, and the upper shaft receives power from the bevel gear A supported by the rear cover fixed to the upper rear part of the transmission case. A drive shaft is suspended from the rear of the upper shaft via a bevel gear transmission, and the axial center of the drive shaft and the axial center of the upper shaft are aligned with the left-right center line of the fuselage. The upper shaft is supported by the bevel gear case, the drive shaft is supported by the drive shaft case, and the drive shaft case is supported by the lower part of the bevel gear case so that it can be rotated around the axis of the drive shaft. The upper rotary shaft is fixed to the lower part of the drive shaft case through a bevel gear transmission at the bottom of the shaft so that the upper rotary shaft is driven at right angles to the drive shaft. A spur gear A is fixed to the upper rotary shaft at the lower part of the drive shaft, and the lower rotary shaft is connected to the upper rotary shaft so that the lower rotary shaft is driven from the spur gear A via the spur gear transmission. It is supported in the lower part of the rotary shaft case parallel to the shaft, and the axial center of the upper shaft and the lower rotary shaft supported in the rotary shaft case are both located on the axial center line of the drive shaft. The rotation speed of the lower rotary shaft is set to be the same as the rotation speed of the upper rotary shaft, and the rotation direction is set to rotate in the opposite direction to that of the upper rotary shaft. , the drive shaft case shown above is 180
By rotating the upper rotary shaft by 180 degrees, the upper rotary shaft and the lower rotary shaft are simultaneously rotated 180°, and the direction of rotation of the upper rotary shaft is changed from normal to reverse, and the direction of rotation of the lower rotary shaft is changed from reverse to normal. A tilling claw in a deep tilling device of a walk-behind agricultural vehicle configured to allow the tilling claw to be attached to the lower rotary shaft, the outer diameter of the tilling claw attached to the lower rotary shaft being larger than the outer diameter of the tilling claw attached to the upper rotary shaft. This is due to the fact that it is set smaller than the diameter dimension.

In the following, a detailed explanation will be given based on the drawings that can be illustrated. (15) is the prime mover 06), the left and right running wheels (1η
It is a walking-type agricultural vehicle equipped with a tiller (4), a transmission case (1), and a handle (cypress).

The power of the prime mover (16) is transferred to the input shaft via the engine pulley (19LV belt (19), input pulley 0!I), etc. by operating the main clutch lever that controls the power disconnection mechanism (not shown). transmitted. A fixed gear (25) is fixed to the input shaft Q■.
The wheel axle 126) is driven through a transmission device (not shown) that selectively slides and engages with the wheel axle 0! Or the agricultural vehicle 05 driven in the direction of the arrow ((b)) moves forward or backward.

In addition, a sliding gear Qη for transmitting power to the upper rotary shaft (5) of the tilling section (4) is slidably wedge-fitted to the input shaft (33), and the intermediate shaft (33) It is configured to selectively slide and mesh with the fixed gears (a) and (30) fixed to the. Attach the bolt (
The rear cover (2) is fixed at the rear cover (2).
) supports a bevel gear A(3), and the bevel gear A(3)
) has a hole (31) of different diameters opening rearward. The different diameter hole (different diameter shaft 02 provided at the front end of the upper shaft (6) in 30) of the bevel gear A (3) is inserted into the upper shaft (6).
is extended toward the rear. The bevel gear A (3) is fixed to the intermediate shaft (33) mentioned above.
s) to drive the upper shaft (6). Upper shaft (6
A bevel gear CD4) is fixed to the rear of the drive shaft (7), and the bevel gear C (b) drives the bevel shaft (7) to the upper end of the drive shaft (7). The drive shaft (7) is suspended downward from the rear of the upper shaft (6) via a bevel gear transmission device including the bevel gear C (Incorporated) and the bevel gear Do9. Then, the upper shaft (6) is attached to the bevel gear case (8) so that the axes of the upper shaft (6) and the drive shaft (7) both match the left-right center line XX of the aircraft. are supported by the drive shaft case (9), and the front end of the bevel gear case (8) is fixed to the rear surface of the rear cover (2) with bolts (3→, etc.).

The upper part of the drive shaft case (9) is the bevel gear case (8).
The stop ring 09 fits into the lower part of the drive shaft case (9) so that it can be rotated carefully around the drive shaft (7).
) is supported on the bevel gear case (8).

A cylindrical portion (40) is formed in the upper part where the drive shaft case (9) is fitted into the bevel gear case (8) to reinforce the support of the drive shaft case (9).

A rotary lever (14) is fixed to the drive shaft case (9) so as to be movable up and down using a pin (41) as a fulcrum.

Further, the rotation lever (141) fixed to the drive shaft case (9) is locked on the upper surface of the rotary frame αl through which the small diameter portion (10) of the drive shaft case (9) passes. Fix the front locking tool (+2J) and the rear locking tool (13), and engage one end of the rotating lever 04 into the locking tool (+2), Qa) to attach the drive shaft case. (
9) is configured to lock the rotation. Note that the front locking tool (12) and the rear locking tool (13) are provided oppositely at positions having a phase of 180° with respect to the axial center of the drive shaft (7). The front end of the low-rise frame (11) is fixed to the hitch handle with bolts (43), etc., and the rear end is fixed with a mounting bracket (441), and the support (46) is fixed to the mounting bracket (441). A tail wheel (4υ) is attached to the lower end of the strut (4fn).

A small bevel gear (3η) is wedged into the lower end of the drive shaft (7),
The small bevel gear (large bevel gear meshed with 3η)
is fixed to the upper rotary shaft (5), and the upper rotary shaft (
The upper rotary shaft (5) is attached to the drive shaft case (9) so that the drive shaft (5) is driven at right angles to the drive shaft (7).
) is supported by the upper part of the rotary shaft case (52), which is fixed to the lower part of the shaft with a bolt (53) or the like.

A spur gear A wheel is fixed to the upper rotary shaft (5) at the lower part of the drive shaft (7), and a spur gear B (5'l) that meshes with the spur gear A (56) is attached to the support shaft A (goods). Spur gear C (5'l), which is loosely fitted and meshed with spur gear B (5'l), is loosely fitted to support shaft B (61). Support shaft A (601 and support shaft B
(61) is supported by the rotary shaft case←. The spur gear ring that meshes with spur gear C is attached to the lower rotary shaft (
(b), and the lower rotary shaft (49) is fixed to the upper rotary shaft (5) so that the lower rotary shaft (6) is driven.
It is supported at the bottom of the rotary shaft case (2) parallel to the rotary shaft case (2). 1 supported by the rotary shaft case like this
The axial center of the lower rotor shaft (5) and the lower rotor shaft α9) are arranged so as to be located on the axial center line S-8 of the drive shaft (7), respectively. and the lower rotary shaft (4
The spur gear A) and the spur gear D (59) are set to have the same number of teeth so that the rotation speed of the upper rotary shaft (5) is the same as the rotation speed of the upper rotary shaft (5). In addition, spur gear B (57) and spur gear C (to) are interposed so that the rotation direction of the lower rotary shaft (49) is opposite to that of the upper rotary shaft (5°). be. (4η is a rotary cover.

Tilling claws are attached to the left and right sides of the upper rotary shaft (5) of the tilling section (4) configured as described above, and tilling claws are attached to the left and right sides of the lower rotary shaft (49), respectively. Deep plowing work is carried out. In this case, the outer diameter d of the tilling claw (a) must be set to be smaller than the outer diameter of the tilling claw (to).The operating state of the present invention will be explained below. First, when performing deep plowing work using the forward rotation direction (c) of the upper rotary shaft (5), the rotation lever (14) should be engaged with the front locking tool (12). As shown in Figure 4, the large bevel gear (to) is located to the right of the left-right center line XX of the machine, and the tilling claw ■ attached to the upper rotary shaft (5) It is set in the direction of rotation, and
Since the lower rotary shaft (49) is set to rotate in the opposite direction to the upper rotary shaft (5), the tilling claw (50>) attached to the lower rotary shaft (09) rotates as indicated by the arrow (E). Next, by operating the transmission mechanism (not shown), the gears of the transmission device (not shown) are engaged with the fixed gear (c), and the left and right running wheels (lη, (1
7) Set so that '' rotates in the direction of arrow (a).

On the other hand, select the fixed gear (2)) and (ace) by operating the transmission mechanism (not shown) for the sliding gear eη, ((2), and select the upper rotary shaft (5) and the lower rotary shaft (49). Then, move the tail wheel (45) up and down appropriately to obtain the desired depth of plowing, and fix the column (40) to the mounting bracket (B) with the fastener (St). When the main clutch lever (22) is operated, deep plowing work is performed by the power of the prime mover (16) via a power disconnection mechanism (not shown), and this state is shown in FIG. The direction of movement of the machine at this time is the direction of the arrow (G), and the tilling claws attached to the upper rake shaft (5) act from the top to the bottom of the screen, a so-called down cut. This is a working state in which the tilling claws attached to the lower rotary shaft (49) work from the bottom to the top, a so-called up-cut working state.

In this way, the lower tilling claw (to) is cut up,
By down-cutting the upper tilling claws, deep tilling work can be carried out extremely well in fields where the roots of cultivated fruit trees and the like extend into the soil, and in hard soil.

In other words, the roots in the soil are efficiently cut by the tiller claws (2) as they are raked up from bottom to top, and even in hard soil, the tiller claws have an up-cutting action that allows them to penetrate deeply into the soil. This is possible. However, if the machine goes deep into the soil, the forward movement of the machine will be hindered and the machine will become incapacitated, but since the upper tilling claws (4EO) work down into the hard part of the field surface, the machine will jump forward. The effect of the so-called dashing action allows the machine to move forward smoothly and perform deep plowing to a predetermined depth with high efficiency.At this time, the effect of the danosing action by the upper tilling claws is as follows: Since the outer diameter of the upper tilling claw θ is set larger than the outer diameter d of the lower tilling claw 60), the tilling reaction force of the upper tilling claw (4→) is larger than the outer diameter of the lower tilling claw 60). This is greater than the tilling reaction force of the claws, so the tilling claws at the bottom act to move the machine forward with a force greater than the force that is inhibiting the machine's forward movement, and the left and right running wheels Composting is carried out with high efficiency without causing the soil to slip.Then, compost etc.
It is completely stirred and buried. At this time, the rotational speeds of the upper rake shaft (5) and lower rake shaft (4) are set to the same speed, so the tilling claws (4) and tilling claws (G) can be rotated without interfering with each other. It can be arranged as follows.

This kind of deep tilling work is done using the tilling claws (
2) deeply into the soil, and in the present invention, as a measure to make the tilling claws (5) penetrate deeply into the soil, In line with what you have set to do,
The outer diameter d of the tilling claws is set smaller than the outer diameter of the upper tilling claws 08). In this way, by reducing the outer diameter d of the lower tilling claw (to), the tilling force is reduced and the tilling reaction force is also reduced, making it possible to perform deep tilling even with a small, lightweight and low horsepower farming rate. This means that it can be done.

In addition, in fields with few roots in the soil or fields with soft soil, the dancing phenomenon of the machine is unlikely to occur, so for more efficient deep tilling work, reverse the direction of the upper tilling claw (■). Rotate the bottom tilling claw (
By rotating the (g) in the normal (f) direction, the machine moves smoothly without any dancing, and it is possible to perform deep plowing work at a predetermined depth with high efficiency. To achieve this state, rotate the rotating lever (14) that is engaged with the front locking tool (1) upward using the pin (41) as a fulcrum (as shown by the chain line in Figure 5). and the front latch (
After releasing the locking state with +2, rotate the rotating lever 180 degrees and engage the rear locking tool (Kou).
The drive shaft case (9) rotates 180 degrees around the fine center of the drive shaft (7), and the upper rotary shaft (5) and lower rotary shaft (40) also rotate 180 degrees in plane and the left and right sides are swapped. As shown in Fig. 4, the large bevel gear (to) is located to the left of the left-right center line It rotates in the opposite direction of the arrow shown in Figure 1). Moreover, as shown by the tilling claw (to)', it is oriented to correspond to the direction of reversal (b), so there is no need to remove the tilling claw from the upper rotary shaft (5) and swap it left and right. , lower rotary shaft (49)
The direction of rotation is opposite to the upper rotary shaft (5), that is, forward rotation, and it rotates in the direction of the arrow (toward), and as shown by the tilling claw ■)', it rotates in the direction corresponding to the direction of forward rotation (towards). Therefore, it is not necessary to remove the tilling claws (to) from the lower rake shaft (49) and replace them between the left and right sides.

Since the axial center of the upper rotary shaft (5) and the axial center of the lower rotary shaft (49) are located on the axial center line S-8 of the drive shaft (7), 180° plane rotation is possible. Even if the vehicle rotates, the axial center position remains the same as before turning and does not change.

When performing deep plowing work in this state, care must be taken as the tilling claws (si) act down on the field surface at the start of work, so even if the soil is soft, there is a risk of the machine dancing. If the tiller claws penetrate into the soil and plow deeply to the point where the tiller claws act up-cut on the field surface, the dancing phenomenon will be prevented and the machine will move smoothly, allowing extremely highly efficient deep plowing work. It is.

As detailed above, the deep cultivation device for a walk-behind agricultural vehicle according to the present invention has two parallel rotary shafts disposed above and below,
In addition to having a configuration in which they rotate in opposite directions, the tilling claws have been improved by setting the outer diameter of the lower tilling claw to be smaller than the outer diameter of the upper tilling claw, resulting in a smaller size. Even if it is a walking agricultural vehicle,
It is now possible to perform deep plowing to a sufficient depth and complete stirring efficiently without any dancing phenomenon, and it can solve all the shortcomings and problems of conventional crank type and rotary type deep cultivators at once. It was done.

In addition, the rotation direction of the upper and lower rotary shafts can be switched between forward and reverse as appropriate depending on the field conditions, and switching between forward and reverse can be done by one-touch operation of the rotary renocou. It also has extremely excellent handling properties.

[Brief explanation of the drawing]

The attached drawings are drawings illustrating embodiments of the present invention, and FIG. 1 is a side view of a walk-behind agricultural vehicle equipped with tilling claws according to the present invention during deep plowing work, and FIG. 2 is a diagram showing FIG. 1. FIG. 3 is a cross-sectional view of the main part for explaining deep plowing work, FIG. 4 is a cross-sectional view of the main part along the Y-Y line in FIG. 6, and FIG. FIG. 2 is a cross-sectional view of the upper rotary shaft and the lower rotary shaft rotated in plane by 180 degrees. In these drawings, (1) is the transmission case, (2) is the rear cover, (3) is the bevel gear A1, (4) is the tilling part,
(5) is attached to the upper rotary shaft, (6) is the upper shaft, (7) is the drive shaft, (8) is the bevel gear case, (9) is the drive shaft case, and (2) is attached to the upper rotary shaft (5). (49) is the lower rotary shaft, (to) is the tilling claw attached to the lower rotary shaft (49), (52) is the rotary shaft case, 156) is the spur gear A, X-X is the machine body. The left and right center line, S-8 is the axial center line of the drive shaft (7), D is the outer diameter of the tiller, and d is the outer diameter of the tiller. Patent applicant representative Patent attorney Mitsuru Ike

Claims (1)

[Claims] The prime mover (+61) has a transmission case (1) for transmitting the power of
The upper shaft (6) receives power from the bevel gear A (3) supported by the rear cover (2) fixed to the upper rear part.
) extends rearward, and a drive shaft (7) is suspended from the rear of the upper shaft (6) via a bevel gear transmission, and the axial center of the drive shaft (7) and the upper shaft ( 6) Align the upper axis (
6) is supported by the bevel gear case (8), and the drive shaft (7) is supported by the drive shaft case (9), and the drive shaft case (9) is rotated around the axis of the drive shaft (7). The upper rotary shaft (5) is supported at the lower part of the drive shaft (7) via a bevel gear transmission in a position perpendicular to the drive shaft (7). The upper rotary shaft (
5) is supported on the upper part of the rotary shaft case (5) which is fixed to the lower part of the drive shaft case (9), and the upper rotary shaft (5) has a spur gear A at the lower part of the drive shaft (7). The lower rotary shaft 09) is fixed to the rotary shaft parallel to the upper rotary shaft (5) so that the lower rotary shaft (A9) is driven from the spur gear A■) via the spur gear transmission device. The axial center of the upper rotary shaft (5) which is supported on the lower part of the case (52I and thus supported on the rotary shaft case (52) and the lower rotary shaft θ9)
are arranged so that their axes are located on the axis S-8 of the drive shaft (7), and the rotational speed of the lower rotary shaft (A9) is the same as the rotational speed of the upper rotary shaft (5). are set the same, and the rotation direction is the upper rotary shaft (
5) is set to rotate in the opposite direction, and the drive shaft case (9) is set to rotate in the opposite direction.
By rotating the upper rotary shaft (5) and the lower rotary shaft (4 [phase]), the upper rotary shaft (5) and the lower rotary shaft (4 [phase]) are simultaneously rotated by 1880 planes,
The rotation direction of the upper rotary shaft (5) can be changed from normal rotation (C) to reverse rotation), and the rotation direction of the lower rotary shaft (49) can be changed from reverse rotation (E) to normal rotation (E). A tilling claw in a deep tilling device of a walk-behind agricultural vehicle, which is attached to the lower rotary shaft (49), has an outer diameter d equal to that of the upper rotary s+5.
A tilling claw used in a deep tillage device of a walk-behind agricultural vehicle, characterized in that the G is set to be smaller than the outer diameter of the tilling claw (481) attached to the tiller.