JPS6016503A - Plowing pawl 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 60α 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 the case of a rake-type deep tiller, the tilling depth is insufficient, and if the tiller is plowed deeply, the progress of the machine will be hindered and the running wheels will slip, resulting in a failure rate. However, it has many drawbacks and problems in practical terms, such as being extremely inadequate in terms of stirring and burying and root cutting, and in fields with hard surfaces, a phenomenon of danosing, where the machine flies forward, occurs. This is the actual situation.

The present invention proposes a tilling claw used in a deep tilling device of a walk-behind agricultural vehicle that can completely perform such deep tilling work. It has a transmission case for transmitting power from the PTO shaft to the upper rotary shaft of the tilling section,
The upper shaft is suspended from the upper shaft that receives power from the transmission case via a bevel gear transmission device.The upper shaft is suspended from the bevel gear case so that the axis of the drive shaft is aligned with the left-right center line of the fuselage. The drive shaft case is supported on the lower part of the bevel gear case so that it can rotate around the axis of the drive shaft, and the upper part is connected to the lower part of the drive shaft via a bevel gear transmission. The upper rotary shaft is supported on the upper part of the rotary shaft case, which is fixed to the lower part of the drive shaft case, so that the rotary shaft is driven at right angles to the drive shaft. A spur gear A is fixed at the lower part, and the lower rotary shaft is supported in the lower part of the rotary shaft case in parallel with the upper rotary shaft so that the spur gear A drives the lower rotary shaft through the spur gear transmission device. Therefore, the axis of the upper rotary shaft and the lower rotary shaft supported by the rotary shaft case are both arranged on the axial center line of the drive shaft, and the axis of the lower rotary shaft is The rotational speed is set to be the same as the rotational speed of the upper rotary shaft, and the rotation direction is set to rotate in the opposite direction to the upper rotary shaft.
By rotating, the upper rotary shaft and the lower rotary shaft can be turned simultaneously by 1800 planes, and the direction of rotation of the upper rotary shaft can be changed from normal to reverse rotation, and the direction of rotation of the lower rotary shaft can be changed from reverse to normal rotation. The tilling claw in the deep tilling device of a walk-behind agricultural vehicle is constructed as follows, and the outer diameter of the tilling claw attached to the lower rotary wheel shaft that can be marked is equal to the outer diameter dimension of the tilling claw attached to the upper rotary wheel shaft. This is due to the fact that it is set to be smaller than .

In the following, (15) is a prime mover (+6), left and right running wheels (1η
, (1η') It is a walking agricultural vehicle equipped with a tiller (4), a transmission case (1), a handle (1→, etc.).

The power of the prime mover (16) is powered by the engine pulley (19), ■
The input shaft (23 ) are fixedly installed with fixed gears (24), (25), and are connected to the wheel shaft G!6 via a transmission device (not shown) that selectively slides and meshes with the fixed gears (241, (25)).
is driven, and the wheel shaft (left and right running wheels α7 attached to 2→), (17)' are driven in the direction of arrow (a) or arrow (b), and the agricultural vehicle (+51) moves forward or backward. .

The input shaft (23) also includes a sliding gear (27) for transmitting power to the upper rotary shaft (5) of the tilling section (4).
(For example, the fixed gears (29) and (30) are slidably wedge-fitted and fixed to the PTO shaft (2) that protrudes to the side of the transmission case (1). A large sprocket V1-(31) and a small sprocket (3
2) is supported, and the large sprocket Jt) is PTO
Wedge fit onto the shaft (2), and replace the small sprocket (3 old) with the upper shaft (6
), and a chino (33) is wound around the large sprocket (31) and small sprocket (2) to drive the upper shaft (6).

A bevel gear A (341) is fixed to one end of the upper shaft (6), and the bevel gear A (a=9) meshes with the bevel gear B (35) fixed to the upper end of the drive shaft (7) to drive the drive shaft. A shaft (7) is driven.The drive shaft (7) is suspended downward via a bevel gear transmission consisting of the bevel gear A (34), the bevel gear B (35), and the like.

And the axis of the drive shaft (7) is the left and right center line of the aircraft
The upper shaft (6) is fitted with a bevel gear case (8
), the drive shaft (7) is supported by the drive shaft case (9). The transmission case (3) is fixed to the transmission case (1) and the bevel gear case (8) with bolts 136). The upper part of the drive shaft case (9) fits into the lower part of the bevel gear case (8), and is fitted with a stop ring (39) so that the drive shaft case (9) can rotate around the axis of the drive shaft (7). It is supported by the bevel gear case (8). A cylindrical portion 00) is formed in the upper part of the drive shaft case (9) fitted into the bevel gear case (8) to reinforce the support of the drive shaft case (9).

A rotating lever (141) is fixed to the drive shaft case (9) so as to be movable up and down about a pin (41).

Further, on the upper surface of the rotary frame (11) through which the small diameter portion (10) of the drive shaft case (9) passes, there is a rotary lever (14) fixed to the drive shaft case (9).
A front locking tool (1) and a rear locking tool (13) are fixedly installed for locking the The front locking tool 02) and the rear locking tool (13) lock the shaft of the drive shaft (7). The front end of the low-resolution frame Q+) is fixed to the hitch 02) with a bolt (43), etc., and the rear end has a mounting bracket (44). is fixedly installed, and the mounting bracket (44)
A column (46) is fixed to the column 06) by a fastener ←1), and a tail wheel 05) is attached to the lower end of the column 06).

A small bevel gear Oη is wedge-fitted to the lower end of the drive shaft (7), and a large bevel gear (3→
Attach the lower part to the lower part of the rotor shaft (5), and then attach the upper part to the lower part of the rotor shaft (5).
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 fixed to the lower part of the rotary shaft case (sZ) with bolts, etc.

A spur gear A (54) is fixed to the upper rotary shaft (5) at the lower part of the drive shaft (7).
A spur gear B (65) that meshes with the spur gear B (54) is loosely fitted on the support shaft A (58), and a spur gear C that meshes with the spur gear B (55)
is loosely fitted onto the support shaft B (59). Support shaft A (581
and the support shaft B (59) are supported by the rotary shaft case (52). The spur gear D (5i) meshing with the spur gear C) is fixed to the lower rotary shaft (49), and the lower rotary shaft (49) is connected to the upper rotary shaft (5) so that the lower rotary shaft (49) is driven. Parallel row axis case (to)
is supported at the bottom of the In this way, the axes of the upper rotary shaft (5) supported by the rotary shaft case (5) and the lower rotary shaft 09 are respectively connected to the drive shaft (7).
) is arranged so as to be located on the axis S-8 of the.

Then, the rotation speed of the lower rotary shaft (49) is set to be the same as the rotation speed of the upper rotary shaft (5).
4) and spur gear D (57) are set to have the same number of teeth. Also, the direction of rotation of the lower rotary shaft (49) is set to be opposite to that of the upper rotary shaft (5).
A spur gear B (55) and a spur gear C) are interposed therebetween. (47) is a rotary cover.

Tilling claws (48) are attached to the left and right sides of the upper rotary shaft (5) of the tilling section (4) configured in this way, and tilling claws (bO) 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 ((to) must be set to be smaller than the outer diameter of the tilling claw (4→).

In the following, the mode of operation of the invention will be explained.

First, when performing deep plowing work by rotating the rotation direction of the upper rotary shaft (5) in the forward direction e→, engage the rotary lever (1) with the front locking device (+2). As shown in Fig. 4, the large bevel gear 08) is located on the right side of the left-right center line Since the lower rotary shaft (49) is set to rotate in the opposite direction to the upper rotary shaft (5), the tilling claws attached to the lower rotary shaft (49) The rotation direction of the arrow (river) is set in the direction of rotation.Next, the fixed gear (2) is set by operating the transmission mechanism (not shown).
) are engaged with the gears of a transmission device (not shown), and the left and right running wheels (17) and the load are set to rotate in the direction of the arrow (A). On the other hand, the sliding gears (27) and (A) are operated by a transmission mechanism (not shown) to select the fixed gear (29L (30)) and engage the upper and lower rotary shafts (5) and lower rotary shafts 09 to the desired rotation. Set to speed. Then, move the tail wheel (45) up and down appropriately to obtain the desired depth of plowing, fix the column (4G) to the mounting bracket with the fastener (51), and fix the main clutch lever (122). Deep plowing work is carried out using the prime mover (state power) through a power disconnection mechanism (not shown), and this state is
Shown in the figure. The direction of movement of the aircraft at this time is indicated by the arrow (G).
The tilling claws (4→) attached to the upper rake shaft (5) are in the so-called down-cutting state, which acts from top to bottom on the field surface, and the lower rake shaft (5) 49) The tilling claws (goods) installed in By down-cutting the soil, deep plowing 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 while being raked up from bottom to top by the tiller claws (501), and even in hard soil, the tiller claws (501) have an up-cut action, so they can be cut deeply (into the soil). However, if the machine goes deep into the soil, the forward movement of the machine will be hindered and it will become incapacitated. The machine moves forward smoothly due to the effect of the dunosing action that tries to fly the soil forward, and the deep plowing work to a predetermined depth can be performed with high efficiency.At this time, the upper tilling claw (To)
The effect of the dashing action by the upper tilling claw (4 →
Since the outer diameter of the lower tilling claw (50) is set larger than the outer diameter d of the lower tilling claw (50), the upper tilling claw (b)
) is larger than the tilling reaction force of the lower tilling claw (60), so the lower tilling claw (60) is required to move the aircraft with a force greater than the force that is inhibiting the forward movement of the aircraft. It has the effect of moving the vehicle forward, and is highly efficient without causing the left and right running wheels to slip. Compost and other materials are thoroughly mixed with tillers and tillers before being buried. At this time, the rotational speeds of the upper rotary shaft (5) and the lower rotary shaft (49) are set to the same speed, so that the tilling claws (4) and the tilling claws can be rotated without interfering with each other. It is possible to arrange the

This kind of deep tilling work is done using the tilling claws (
(to) deeply into the soil, and in the present invention, as a measure to make the tilling claws GO) deeply penetrate into the soil, the tilling claws 150) are plowed by up-cutting. Adjust the outer diameter d of the tiller to the upper tiller according to the setting.
It is set smaller than the outer diameter of the. In this way, by reducing the outer diameter d of the lower tilling claw, the tilling force is reduced, and the tilling reaction force is also reduced, making it possible to perform deep tilling even with a lightweight, small, and low horsepower agricultural vehicle. This means that it can be done.

In addition, in fields with few roots in the soil or fields with soft soil, the machine's danosing phenomenon rarely occurs, so in order to perform deeper tillage work with higher efficiency, the upper tiller claws should be reversed. By rotating the tiller in the direction of ) and rotating the lower tilling claws in the forward direction, the machine moves smoothly without dashing, making deep plowing at a predetermined depth highly efficient. It can be done. To achieve this state, rotate the rotating lever (14) that is engaged with the front locking tool Qz) upwards using the bottle (41) as a fulcrum (shown by the chain line in Figure 3). After releasing the locking state with the front locking tool (+21), turn the rotating lever (1 ji) 180 degrees and engaging the rear locking tool (kuni), then the drive shaft case (9 ) is the drive shaft (7
) rotates 180 degrees around the axis of the upper rotary shaft (5) and lower rotary shaft (4!j), and the upper and lower rotary shafts (4! ) will be located to the left of the left-right center line It rotates in the direction of. Moreover, tilling nails (to)′
As shown in , it is oriented to correspond to the reverse direction), so there is no need to remove the tilling claws ■ from the upper rotary shaft (5) and swap them left and right. The direction is opposite to the upper rotary shaft (5), that is, forward rotation, and it rotates in the direction of the arrow (toward), and the tilling claws are oriented in the direction corresponding to the forward rotation direction (towards), as indicated by )'. The tiller claws are attached to the lower rotary shaft (49).
There is no need to remove it and swap it left and right.

Since the axes of the upper rotor shaft (5) and the lower rotor 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 (50) act in a downward cut on the field surface at the start of work, so even if the soil is soft, there is a risk of the machine body dashing. However, if the tilling claws (to) penetrate into the soil and the tilling claws (to) work on the field surface in an up-cut manner, the dashing phenomenon will be prevented and the machine will proceed smoothly, resulting in extremely high efficiency. This allows for deep cultivation work.

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 has become possible to perform deep plowing to a sufficient depth and complete stirring efficiently without any dashing phenomenon, and 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 the forward and reverse switching can be done with one-touch operation of the rotary lever. 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. 6 is a cross-sectional view of the main parts for explaining deep plowing work, FIG. 4 is a cross-sectional view of the main parts along the Y-Y line in FIG. 5, and FIG. FIG. 2 is a cross-sectional view of the upper rotary shaft and the lower rotary shaft at a position where the upper rotary shaft and the lower rotary shaft are rotated 180 degrees in plane. In these drawings, (1) is a transmission case, (2) is a PTO shaft, (3) is a transmission case, (4) is a tilling section, (
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 is attached to the upper rotary shaft (5). tilling nails, (49
) is the lower rotary shaft, (to) is the lower rotary shaft (49)
The tilling claw, 62) attached to the rotary shaft case, (
5. Spur gear A, X-X is the left and right center line of the aircraft, S-8
is the axial center line of the drive shaft (7), D is the outer diameter dimension of the tilling claw (to), and d is the outer diameter dimension of the tilling claw 6o). Patent applicant agent Mitsuru Ike, patent attorney

Claims (1)

[Claims] The PTO shaft (2) protrudes to the side of the transmission case (1).
) to the upper rotary shaft (5) of the tilling section (4), and the upper shaft (6) that receives the power from the transmission case (3) is equipped with a bevel gear transmission. Align the upper shaft (6) so that the axis of the drive shaft (7) hanging down through the
) 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) can be rotated around the axis of the drive shaft (7). The upper rotary shaft (5) is supported at the lower part of the bevel gear case (8) so that the drive shaft (7) can be rotated at right angles to the drive shaft (7) through the bevel gear transmission. Insert 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). ) is fixed, and the lower rotary shaft (49) is connected to the rotary shaft parallel to the upper rotary shaft (5) so that the lower rotary shaft (49) is driven from the spur gear A (54) via the spur gear transmission. The shaft center of the upper rotary shaft (5) supported on the lower rotary shaft case (52J) and the lower rotary shaft (49
1 are arranged so that their axes are located on the axial center line S-8 of the drive shaft (7), and the rotational speed of the lower rotary shaft (49) is the same as the rotational speed of the upper rotary shaft (5). The rotation direction is set to be the same as that of the upper rotary shaft (5), and the drive shaft case (9) is set to rotate at 180 degrees.
By rotating the upper rotary shaft (5) and the lower rotary shaft (49) by 180° at the same time,
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 according to the present invention, the outer diameter d of the tilling claw attached to the lower rotary shaft (49) is the same as that of the tilling claw attached to the upper rotary shaft (5). - A tilling claw in a deep tilling device for a walk-behind agricultural vehicle, characterized in that it is set to be smaller than the outer diameter dimension.