JPS6016501A - Deep plowing apparatus in 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 deep plowing device for a walk-behind agricultural vehicle for performing deep plowing work (plowing depth of 5'DC11 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-sized farming model that can perform this deep plowing work has yet been developed.

In other words, with a rotary type deep tiller, the tillage 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, and with a crank type deep tiller, the agitation The reality is that the machine can only perform extremely insufficient burying and root cutting operations, and in fields with hard surfaces, the machine body tends to fly forward.

The present invention proposes a deep plowing device for walk-behind farming that can completely perform such deep plowing work. It has a transmission case for transmitting power to the upper rotary shaft of the unit, and the axis of the drive shaft is suspended from the upper shaft via a bevel gear transmission to the upper shaft that receives power from the transmission case. 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 rotate 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 lower part of the drive shaft so that the upper rotary shaft is driven at right angles to the drive shaft. The lower rotary shaft is supported by the upper part of the rotary shaft case, and a spur gear A is fixed to the upper rotary shaft at the lower part of the drive shaft. The rotary shaft is supported at the bottom of the rotary shaft case parallel to the upper rotary shaft, and the axis of the upper rotary shaft and the lower rotary shaft supported on the rotary shaft case are both of the drive shaft. The rotational speed of the lower rotary shaft is set to be the same as the rotational speed of the upper rotary shaft, and the rotation direction is set to be in the opposite direction to that of the upper rotary shaft. By rotating the drive shaft case 180 degrees, the upper rotary and lower rotary shaft can be rotated 180 degrees at the same time, and the direction of rotation of the upper rotary shaft can be changed from normal rotation to reverse rotation. Another feature is that the direction of rotation of the lower rotary shaft can be changed from reverse rotation to forward rotation.

In the following, a detailed explanation will be given based on the drawings that can be used as examples.
(+7)', It is a walking farming type equipped with a tilling part (4), a transmission case (1), and a handle (old etc.) The power of the prime mover 06 is the engine pulley (19), ■Belt ■0 ), the main clutch lever (02) that controls the power connection/disconnection mechanism (not shown) via the input pulley (21), etc.
By the operation of , the input shaft (transmitted to the input shaft, fixed gear QX, C15) is fixed to the input shaft, and the fixed gear 04
) and (25), the wheel axle @) is driven through a transmission device (not shown) that selectively slides and meshes with the wheels (25), and the left and right running wheels (17), (17)' mounted on the wheel axle 06) are driven. Agricultural type (1) is driven in the direction of arrow (a) or arrow (2).
5) moves forward or backward.

In addition, the input shaft (to)) includes a sliding gear Q'7) for transmitting power to the upper rotary shaft (5) of the tilling section (4).
(2→ is slidably wedge-fitted and fixed gear G!9 fixed to the PTO shaft (2) protruding to the side of the transmission case (1)), selected as (30) It has a sliding and interlocking structure. A large sprocket (31) and a small sprocket (@
The large sprocket (31) is wedge-fitted to the PTO shaft (2), and the small sprocket (3 old) is supported by the upper shaft (6).
The large sprocket 01) and the small sprocket 0 (old) are wrapped around the cheno (33), and the upper shaft (
6) is driven.

A bevel gear AH is fixed to one end of the upper shaft (6), and the bevel gear A04) meshes with a bevel gear 15) fixed to the upper end of the drive shaft (7) to drive the drive shaft (7). . The drive shaft (7) is the bevel gear A C34 shown above.
), bevel gear B (a5), etc. It is suspended downward via a bevel gear transmission device. Then, the upper shaft (6) is placed in the bevel gear case (8), and the drive shaft (7) is placed in the drive shaft case (9) so that the axis of the drive shaft (7) matches the left-right center line XX of the aircraft. Supported J,
Zru.

The transmission case (3) is attached to the transmission case (3) by a bolt (G).
+l and the bevel gear case (8). The upper part of the drive shaft case (9) is fitted into the lower part of the bevel gear case (8), and a stop ring (39) is installed so that the drive shaft case (9) can rotate around the axis of the drive shaft (7).
is supported by the bevel gear case (8). The drive shaft case (9) is fitted into the bevel gear case (8), and a cylindrical portion is formed in the upper part to reinforce the support of the drive shaft case (9).

A rotating lever (14) is fixed to the drive shaft case (9) so as to be movable up and down about a pin 01).

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 (12) and a rear locking tool (13) are fixedly installed to lock the locking tool (IL (13)), and one end of the rotating lever (1 (4)) is attached to the locking tool (IL (13)). It is configured to engage and lock the rotation of the drive shaft case (9).
The front locking tool (12) and the rear locking tool (1) are installed opposite each other at positions with a phase of 180° relative to the axis of the drive shaft (7). The front end of ) is fixed to the hitch (b) with a bolt ()), etc., and the rear end is fixed with a metal fitting (4), and the mounting metal fitting (44)
A support (46) is fixed to the support (46) by an indigenous tool 1), and a tail wheel (46) is attached to the lower end of the support (4).

A small bevel gear 0η is wedge-fitted to the lower end of the drive shaft (7), and a large bevel gear (B) meshes with the small bevel gear C37).
to the upper rotary shaft (5), and then attach the upper rotary shaft (5) to 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 on the upper part of the rotary shaft case (52), which is fixed to the lower part of the rotary shaft case (52) with a bolt or the like.

A spur gear A (54) is fixed to the upper rotary shaft (5) at the lower part of the drive shaft (7).
Spur gear B (to) that meshes with is loosely fitted to support shaft A (58),
The spur gear C (56) that meshes with the spur gear (8 wheels) is the spindle B.
(59) is loosely fitted. Support axis A (goods) and support axis B (to)
is supported by the rotary shaft case ψ. Spur gear C (
The spur gear D (57) meshing with the lower rotary shaft (
The lower rotary shaft (49) is fixed to the upper rotary shaft (49) so that the lower rotary shaft (49) is driven.
5) is supported at the lower part of the rotary shaft case 12). In this way, the axis of the upper rotary shaft (5) supported by the rotary shaft case←2) and the lower rotary shaft 0
The shaft centers of 9) are respectively the shaft center line S-8 of the drive shaft (7).
It is located at the top. Spur gear A (t, 4) and spur gear D
(5η is set to gears with the same number of teeth. Also, the rotation direction of the lower rotary shaft 09) is set in the opposite direction to the upper rotary shaft (5), and the spur gear B (support) and A spur gear C66) is interposed therebetween. G! 7)
is a rotary cover.

The tilling claws ■ are attached to the left and right sides of the upper rotary shaft (5) of the tilling section (4) configured in this way, and the tilling claws (to) are attached to the left and right sides of the lower rotary shaft (49), respectively, for deep tilling. The working state of the present invention will be explained below.

First, when performing deep plowing work using the rotation direction of the upper rotary shaft (5) in the forward direction (c), use the rotation lever (+
4) is engaged with the front locking tool (12) L, the large bevel gear (2) will align with the left and right center line X-X of the fuselage, as shown in Figure 4.
It will be located on the right side, and the upper rotary shaft (5)
The tilling claws attached to the tiller are set to rotate in the direction of arrow (c), and the lower rotary shaft (A9) is set to rotate in the opposite direction to the upper rotary shaft (5). In addition, the tilling claws (E) attached to the lower rotary shaft 09) are set in the rotational direction of the arrow (E). Next, by operating the transmission mechanism (not shown), the gears of the transmission device (not shown) are engaged with the fixed gears (goods), so that the left and right running wheels (17), (lη') rotate in the direction of the arrow (A). On the other hand, operate the transmission mechanism (not shown) to change the sliding gears (27) and (to) to the fixed gears (c) and 0.
0) and set the meshing upper rotary shaft (5) and lower rotary shaft (49) to the desired rotation speed. Then, adjust the tail wheel (toward) to obtain the desired depth of plowing.
) to the support post by moving it up and down as appropriate, fix it to the mounting bracket () using the fastener (51), and then remove the main clutch lever (+22).
is operated to connect the prime mover (1) via a power disconnection mechanism (not shown).
Deep plowing work is performed by the power of step 6), 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 (4 mallets) attached to the upper rake shaft (5) act from top to bottom on the field surface, so-called This is a down-cut operating state, and the tiller mounted on the lower rotary shaft (6) acts from the bottom to the top, which is a so-called up-cut operating state. In this way, by making the lower tilling claws up-cut and the upper tilling claws (g) down-cut, it is possible to perform deep tilling work in fields where the roots of cultivated fruit trees, etc., have a lot of extension into the soil or in hard soil. is carried out extremely well.

In other words, the roots in the soil are efficiently cut while being raked up from the bottom to the top by the tiller claws (2), and even in hard soil, the tiller claws (2) penetrate deeply into the soil due to their up-cutting action. It is possible. However, if it penetrates deep into the soil, the forward movement of the machine will be hindered and it will become disabled, but since the upper tiller claws work on the hard part of the field surface, the machine will jump forward. Due to the effect of the so-called dasossing effect, the machine moves forward smoothly without causing the left and right running wheels αη, (+7)′ to slip, and deep plowing work to a predetermined depth can be performed with high efficiency. The compost and other materials are thoroughly stirred and buried between the tiller claws and the tiller claws.

At this time, the upper rotary shaft (5) and the lower rotary shaft (49)
) are set at the same speed, the tilling claws (to) and tilling claws (to) can be arranged so that they can rotate without interfering with each other.

In addition, in fields with few roots in the soil or fields with soft soil, the dashing phenomenon of the machine body rarely occurs, so for more efficient deep tilling work, reverse the upper tilling claws (B). By rotating the tiller in the direction of , and rotating the lower tilling claws in the forward direction, no danosing occurs, the machine moves smoothly, and deep plowing at a predetermined depth is performed with high efficiency. It is possible.

To achieve this state, rotate the rotating lever (14) that is engaged with the front locking tool (!2) upwards using the pin θ1) as a fulcrum (as shown by the chain line in Figure 5). to release the locking state with the front locking tool α2), and then release the rotation lever (
When the drive shaft case (9) is rotated 180 degrees and engaged with the rear locking tool (+3), the drive shaft case (9) is attached to the drive shaft (7).
), the upper rotary shaft (5) and lower rotary shaft (5) also rotate 180° in plane, and the left and right sides are swapped, resulting in a large bevel gear (toward) as shown in Figure 5.
is located to the left of the left-right center line It rotates in the direction. Moreover, as shown by the tilling claw (c)', it is oriented in a direction corresponding to the reverse direction, so there is no need to remove the tilling claw from the upper rake shaft (5) and swap it left and right. In addition, the rotation direction of the lower rotary shaft (49) is opposite to that of the upper rotary shaft (5), that is, forward rotation, in the direction of the arrow (to). The tilling claws (50) are oriented according to the direction (towards), so the tilling claws (50) are attached to the lower rotary shaft (
There is no need to remove it from 49) and swap it left and right.

Since the axial centers of the upper rotary shaft (5) and the lower rotary shaft (49) are located on the axial center line S-8 of the drive shaft (7), the axial center is 180° flat. Even when turning, the axis position remains the same as before turning and is configured not to change.

When performing deep plowing work in this condition, care must be taken as the tiller claws act to downcut the field surface at the start of work, so even in soft soil, there is a risk of danosing of the machine body. However, if the tilling claw GQl penetrates into the soil and plows deeply to the point where the tilling claw (GQl) acts on the field surface in an up-cut manner, the dashing phenomenon will be prevented and the machine will proceed smoothly, resulting in extremely highly efficient deep tilling work. can be done.

As detailed above, the deep tillage device according to the present invention has two parallel rotary shafts arranged above and below and rotates in opposite directions, so that it can be used for small walk-behind agricultural vehicles. However, it is now possible to achieve sufficient plowing depth and complete agitation efficiently without the phenomenon of danosing, and it overcomes the shortcomings and problems of conventional crank-type and rotary-type deep cultivators. We were able to solve it all at once.

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 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, in which FIG. 1 is a side view of a walk-behind agricultural vehicle equipped with a deep tillage device according to the present invention during deep plowing work, and FIG. 2 is a view similar to FIG. Fig. 3 is a cross-sectional view of the main part explaining deep plowing work, Fig. 4 is a cross-sectional view of the main part along the Y-Y line in Fig. 5, Fig. 5 is a cross-sectional view of the main part in the fourth corridor. It is a sectional view of the 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 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, (4) is the lower rotary shaft, and the ring is the rotary shaft case. , (The circle is the 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). Patent applicant agent Mitsuru Ike, patent attorney

Claims (1)

[Claims] The PTO shaft (2) protrudes to the side of the transmission case (1).
) has a transmission case (3) for transmitting power to the upper rotary shaft (5) of the tilling section (4), and a bevel gear transmission is attached to the upper shaft (6) that receives the power from the transmission case (3). 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 ( The lower rotary shaft (49) is connected to the upper rotary shaft (49) so that the spur gear A (54) drives the lower rotary shaft (49) via the spur gear transmission.
The axis of the upper rotary shaft (5) and the lower rotary shaft (49) are supported in parallel to 5) at the lower part of the rotary shaft case θ, and are thus supported in the rotary shaft case θ.
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 (49) is equal to 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) that can be marked is rotated 180 degrees.
By rotating the upper rotary shaft (5) and the lower rotary shaft (49), the upper rotary shaft (5) and the lower rotary shaft (49) are simultaneously rotated 180 degrees, changing the direction of rotation of the upper rotary shaft (5) from forward rotation (/) to reverse rotation, and A deep cultivation device for a walk-behind agricultural vehicle, characterized in that the direction of rotation of a lower rotary shaft (49) can be switched from reverse rotation to forward rotation.