JPS602106A - Plowing depth controller 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 drives the rotary shaft of a walk-behind agricultural vehicle in combination with a bevel gear transmission, and rotates the rotary shaft by 180 degrees in a plane, thereby changing the direction of rotation of the rotary shaft between forward and reverse rotation. Implements a plowing depth adjustment device that is ideal for both forward and reverse rotation of the rotary shaft when digging trenches using an agricultural vehicle that is configured to be able to switch the direction of rotation. In order to do this, the tail wheel in the tilling section is arranged under specific setting conditions. The upper shaft receives power from a bevel gear A supported by a rear cover fixed to the upper rear part of the transmission case, and extends rearward. The drive shaft is suspended through the rear bevel gear transmission, and the upper shaft and the drive shaft are attached to the bevel gear case so that the axis of the drive shaft and the axis of the upper shaft match the left and right center line of the aircraft. supported,
The rotary shaft is driven at right angles to the drive shaft through a bevel gear transmission at the bottom of the drive shaft.
The rotary shaft is supported at the lower part of the drive shaft case, and the drive shaft case is supported at the lower part of the bevel gear case so that it can be rotated around the axis of the drive shaft, and the drive shaft case is rotated 1800 times. In a tillage depth adjustment device for a walk-behind agricultural vehicle, which is configured to rotate a rotary shaft by 180° and switch the direction of rotation of the rotary shaft between forward rotation and reverse rotation, The adjustment device is composed of a tail wheel, a mounting bracket, a strut, and a fastener, and the distance from the axis of the drive shaft to the axis of the tail wheel is The mounting bracket is installed so as to be substantially equal to the distance from the axial center line of the drive shaft to the axial center of the wheel shaft provided at the lower part of the transmission case, and the mounting bracket is installed so that the drive shaft case passes through it. At the rear end 9 of the rotary frame, parallel to the drive shaft, the mounting bracket Q is fixed. The invention consists in that the wheel can be adjusted vertically and parallel to the drive shaft.

In the following, a concrete explanation will be given based on the drawings that can be used as examples.
η′, tilling part (4), transmission case (1), handle 0
It is a walking agricultural vehicle equipped with 0 and other features. Prime mover H
The power is provided by the engine pulley (]9) and the V-belt (a).
, input turn IJ- (21), etc., and is transmitted to the input shaft (to) by operating a main clutch lever (22) that controls a power connection/disconnection mechanism (not shown). A fixed gear (goods), 2) is fixed to the input shaft (2), and the fixed gear (goods),
(2!19G) The wheel axle (A) is driven through a transmission device (not shown) that slides and meshes with the left and right running wheels (1η, (lη' is indicated by the arrow (A)) attached to the wheel axle 0f6 & Or an agricultural vehicle (the country moves forward or backward) driven in the direction of the arrow (b).

In addition, the tilling section (4)'s rotary shaft (5) is attached to the input shaft (5).
) The sliding gear (2η, (A) is slidably wedge-fitted to the intermediate shaft 03), and the fixed gear (A), (A) is fixed to the intermediate shaft 03). It has a structure that moves and engages.

A rear cover (2) is fixed to the upper rear surface of the transmission case (1) with bolts (5 bolts), a bevel gear A (3) is supported on the rear cover (2), and a bevel gear A (3) is supported on the rear cover (2). is a different diameter hole C
31) is open toward the rear. Bevel gear A (3)
A different diameter shaft (02) provided at the front end of the upper shaft (6) is fitted into the different diameter hole (31), and the upper shaft (6) extends rearward.

The bevel gear Ata+ meshes with the bevel gear B (55) fixed to the intermediate shaft (33) and the upper shaft <
6) Drive.

A bevel gear C (34) is fixed to the rear of the upper shaft (6), and the bevel gear C (34) meshes with a bevel gear D (g) fixed to the upper end of the drive shaft (7) to drive the drive shaft. shaft(
7) Drive. The drive shaft (7) has a bevel gear C (34) and a bevel gear D (
It is suspended downward via a bevel gear transmission device such as a $. Then, the upper shaft (6) and the drive shaft (
The upper shaft (6) and the drive shaft (7) are supported by the bevel gear case (8) so that the axes of 7) are aligned with the left and right center line X-XIt of the aircraft. The front end of (8) is bolted to the rear of rear cover (2).
It is fixed with something like this.

A small bevel gear (37) is wedge-fitted to the lower end of the drive shaft (7), and a large bevel gear (37) meshes with the small bevel gear (37).
is fixed to the rotary shaft (5), and the rotary shaft (5) is supported at the bottom of the drive shaft case (9) so that the rotary shaft (5) is driven at right angles to the drive shaft (7). ing. 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). The bevel gear case (8 teeth are supported. The drive shaft case (9) is fitted with the bevel gear case (8) & the upper part that is fitted into it forms a cylindrical part (end) and the drive shaft case (9) It strengthens the support of the

A rotating lever (1 shaft) is fixed to the drive shaft case (9) so as to be movable up and down using a pin (41) as a fulcrum.

In addition, the upper surface of the rotary frame (11) through which the small diameter portion (10) of the drive shaft case (9) passes is inserted into the rotary lever (14) fixed to the drive shaft case (9).
) for locking the front locking tool α2) and the rear locking tool (13) are fixedly installed, and one end of the rotating lever 04) is engaged with the locking tool θ3). It is configured to lock the rotation of the drive shaft case (9). Note that the front locking tool 02) and the rear locking tool 03) are provided in two pairs at positions having a phase of 180° with respect to the axis of the drive shaft (7). 6- The front end of the chestnut frame (11) has a pitch (4
) with bolts (A3), etc., and a mounting bracket (goods) is fixed to the rear end parallel to the drive shaft (7).
The strut (3) is fixed to the mounting bracket (←) by a fastener (51) G, and a tail wheel is attached to the lower end of the strut (46). (47) is a low recovery.

The distance l from the axial center line S-8 of the drive shaft (7) to the axial center of the tail wheel (45) is the distance from the axial center line S-8 of the drive shaft (7) to the axial center of the wheel axis I26). The position of the two tail axes (45) is set so that the two tails are substantially equal to each other.

Grooving work is performed by attaching groove digging claws of a commonly used type to the left and right sides of the rotary shaft (5) thus constructed. (49) is a residual tillage treatment board of a desired shape, for example, flat plate shape or plow shape, which is installed and used during trench digging work, and is produced at the lower part of the drive shaft case (9). It works by plowing the uncultivated land in the center, moving it to the left and right, and applying the trenching claws on the left and right. This residual tillage treatment board (49)
is fixed by the drive shaft case (9) & bolt (to).

Next, the operating state of the present invention will be explained with respect to trench digging work.

First, when rotating the rotary shaft (5) in the forward direction, that is, in the direction of the arrow (c), engage the rotary lever (1) in the front locking tool (12). and the fourth
As shown in the figure, the large bevel gear (to) is at the left and right center line of the aircraft.
It will be located on the right side of -X, and the rotary axis (5)
The groove digging claws (to) attached to the left and right wheels are set in the rotational direction Q as shown by the arrow (c), and the remaining tillage treatment plate (49) is placed on the left and right running wheels 0″t) and (lη′ side). Next, by operating the transmission mechanism (not shown), the fixed gear (u) and the gear of the transmission device (not shown) are engaged, so that the left and right running wheels 0η, 0η' Arrow (
Set the coma to rotate in the direction of C7). On the other hand, operate the transmission mechanism (not shown) to select the sliding gear shaft), (c) as the fixed gear @), C301, and mesh the rotary shaft (5).
to the desired rotation speed. Then, move the tail wheel (b) up and down appropriately to obtain the desired groove depth dimension a, and attach the support (b) to the mounting bracket.
4), the main clutch lever ((b) is operated, and the trench digging work is performed using the prime mover (national power) via a power disconnection mechanism (not shown).The progress of the aircraft at this time is The direction is the direction of the arrow (E), and the trenching claws act from the bottom to the top against the field surface, creating a so-called up-cut action state, releasing soil to the left and right and digging trenches. The remaining tillage processing plate (49) has the direction of movement of the machine indicated by the arrow (
Because it is (e), it is located behind the Mizo-bokuzume (goods), and the Mizo-kizume ■
The soil in the central part, which cannot be tilled, is separated and moved to the left and right, and the soil is released together with the soil that is released to the left and right by the groove digging claws (48).

In this way, a diagonal groove having a predetermined width and depth a is formed. In this way, when the rotary shaft (5) rotates forward (arrow C), the left and right running wheels 07) and (1η' are the bottom surface of the formed groove (53).
), and the tail wheel (4 years old, on the surface of the field).

The next step is to perform trench digging work with the rotary shaft (5) rotating in the opposite direction (arrow 2) by operating the transmission mechanism (not shown) and rotating the fixed gear G.
! 5) Engage the gears of the transmission (not shown) and set so that the left and right running wheels 0η, (17)' rotate in the direction of arrow (A). Then, the front locking tool (12) is rotated upward using the pin (41) as a fulcrum (indicated by the chain line in Figure 6), and the front locking tool ( After releasing the locked state with the rear locking tool (13
) When G is engaged, the drive shaft (9) is also 180
The rotor shaft rotates 1800 degrees and the left and right sides are swapped, and as shown in Figure 6, the large bevel gear is located O to the left of the left-right center line X-X of the aircraft. Therefore, the rotary shaft (5) rotates in the opposite direction to that shown in Fig. 4, that is, in the direction shown by the arrow in Fig. 1 (twice). As shown, it is oriented to correspond to the reverse direction (in the reverse direction), so there is no need to remove the groove digging claw (C) from the raking shaft (5) and swap it left and right. 491 also rotates 180 degrees in conjunction with the rotation of the drive shaft case (9) and is located on the tail wheel (45) side, so there is no need to change the attachment back and forth.

In this state, as shown in Figure 5, the direction of movement of the aircraft is indicated by the arrow (
), and as in the case of forward rotation (c) of the rake shaft (5), the trench is dug in an up-cut state with the trench depth dimension a, and the residual tillage treatment plate (49)' is also dug in the same manner. It is something that works. This rotary shaft (5) rotates in the opposite direction (arrow 2)
When digging trenches, the left and right running wheels (11)
, (1η' runs in front of the groove to be formed, that is, on the field surface (52)', and the tail wheel 05) runs on the bottom surface (53) of the groove.
)'.

In this way, even in the same trench digging work, the rotary shaft (5
) is rotated in the forward direction (arrow C) and in the reverse direction (arrow 2), the location where the tail wheel (to) runs is different. is the bottom of the groove (goods)
′. This affects the groove depth dimension, which is set by the vertical position of the tail wheel.

That is, in order to dig a groove with the same depth as the groove depth set in the case of forward rotation, it is necessary to go through adjustment means such as moving the tail wheel (45) upward or downward. It was normal not to.

In the plowing depth adjusting device according to the present invention, by setting the tail wheel θ5) under specific conditions, the tail wheel θ5) can be rotated in the forward direction.
Even if the groove depth dimension set by , and eliminates the need for adjustment means such as readjusting the vertical position of the tailwheel (in the tail wheel) between forward and reverse rotations,
Specific conditions for the tailwheel will be explained below.

In Fig. 7, the field surface f521 and the bottom of the groove when the rotary shaft (5) rotates forward (arrow C) are shown as solid lines, and the field surface (f521 and the bottom of the groove) when the rotary shaft (5) rotates in the opposite direction (arrow 2) (The five grooves are shown by dotted lines, and in either case, the groove depth dimension is the same as the groove depth dimension a in FIGS. 5 and 5 described above.

In this FIG. 7, the axial center line S-S of the drive shaft (7)
The distance l from the center of the drive shaft (from the tail wheel to the tail wheel)
Since the distance is set equal to the distance from the axis S-8 of the wheel to the axis of the wheel axle 126), the ground contact part of the tail wheel (c) is the same as the field surface (goods) in the case of forward rotation. In the case of reverse rotation, the respective lines are in contact with each other at the intersection of the bottom surfaces of the grooves. Therefore, if the groove depth dimension is set to a in the case of forward rotation, a groove with the same groove depth dimension a can be dug in the case of reverse rotation without adjusting the tail wheel 2 up or down.

Assuming that the distance l is set smaller than the distance on the metal plate, the groove depth dimension a & the position of the tail wheel (45) in the case of forward rotation are as shown in Fig. 7. Since the position of the tail wheel shown by the chain line is as shown by )', in order to change the reverse rotation from this state and dig a groove with the same groove depth dimension a, the tail wheel (4σ is the direction of the arrow [1/ It must be lowered to a position where it contacts the bottom surface (53)' of the groove.Also, if 4 is larger than L, move the tail wheel (B) upwards. It must be adjusted to a position where it touches the bottom surface of the groove.

Furthermore, in the 7th-4th case, the mounting bracket (goods) is fixed to the rear end of the rotary frame (11) (7) parallel to the drive shaft +7+, and the support (4fil) is attached to the mounting bracket (44).
is fixed with the fastening tool φυ, so the tail wheel (to)
is constructed so that its vertical position can be adjusted parallel to the drive shaft (7) (arrow 1). Therefore, if the groove depth dimension needs to be smaller than a,
By lowering the tail wheel (b) to the position shown by Y and securing it with the fastening tool l51), the intersection between the field surface (54' in the case of forward rotation and the bottom surface of the groove - Te' in the case of reverse rotation) can be fixed. Since the two tail wheels (6 Te') touch each other, it is possible to dig a groove with the same depth smaller than a in both forward and reverse rotation.Also, a groove depth greater than a is required. In this case, the tail wheel) can be moved upward.

In this way, the distance l from the axis S-8 of the drive shaft (7) to the axis of the tail wheel (4υ) is calculated from the axis S-8 of the drive shaft (7) to the axis of the wheel axis (20). The above-mentioned effect can be achieved by setting the distance equal to the distance from In practice, if 4 is set approximately equal to L&, there will be no actual damage.

As detailed above, the plowing depth adjusting device according to the present invention can be used for both forward and reverse rotation during trench digging work by setting the vertical position of the tail wheel in advance to the desired depth of the trench. In the case of G, a trench of the same depth can be dug, so
Depending on the field conditions, when using the machine by switching between forward-rotation trench digging and reverse-rotation trench digging, there is no need for adjustment means such as vertical adjustment of the tail wheel, and it exhibits extremely excellent handling. This characteristic is maintained even if the depth is adjusted from shallow to shallow.

[Brief explanation of drawings]

The attached drawings are drawings illustrating embodiments of the present invention, in which Fig. 1 is a side view of a walking agricultural vehicle, Fig. 2 is a plan sectional view of the main part in Fig. 1, and Fig. 6 is a normal view. A sectional view of the main parts explaining the state of rotary trench digging work, Figure 4 is Y-- in Figure 3.
5 is a cross-sectional view of the main part taken along the Y line O. FIG.
FIG. 7, which is a sectional view of the main part taken along the line '-Y', is an explanatory diagram for explaining the function of the plowing depth adjusting device. In these drawings, (1) is the transmission case, (2) is the rear cover, (3) is the bevel gear A, [41 is the tilling part, (5) is the rake shaft, (6) is the upper shaft, (7) is is the drive shaft, (8) is the bevel gear case, (9) is the drive shaft case, 00 is the rotary frame, (a) is the wheel axle,
(44) is the mounting bracket, (45) is the tail wheel, (4th phrase is the support,
(51) is the fastening device, X-X is the left and right center line of the aircraft, S-8
is the axial center line of the drive shaft (7), L is the distance from the axial center line S-8 of the drive shaft (7) to the axial center of the wheel axle (2 ladle), e is the axial center line S of the drive shaft (7) This is the distance from -8 to the axis of the tail wheel (four lines). Patent applicant's agent Mitsuru Ike, patent attorney

Claims (1)

[Claims] The power of the prime mover (+d) is transmitted to the left and right running wheels (1η, (17)
It has a transmission case t11 for transmitting power to the rotary shaft (5) & of the tilling part (4), and is supported by a rear cover (2) fixed to the upper rear part of the transmission case (1). Upper shaft (6) that receives power from bevel gear A (3)
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 "two-part shaft" The upper shaft (6) and the drive shaft (7) are supported by the bevel gear case (8), so that the shaft center of the The rotor shaft 151 is supported on the lower platform of the drive shaft case (9) so that the rotor shaft (5) is driven at right angles to the drive shaft (7) via a bevel gear transmission at the bottom. The drive shaft case (9) is supported at the lower part of the O-bevel gear case (8) so that the shaft of the drive shaft (7) can be rotated twice. 9) by 180 degrees, the rotor shaft (5) can be rotated 180 degrees in a plane, and the direction of rotation of the rotor shaft (5) can be switched between forward rotation (c) and reverse rotation. The plowing depth adjustment device O for a walk-behind agricultural vehicle is composed of a tail wheel (-), a mounting bracket (+4), a strut (40), and a fastener (
51), and the tail wheel (45
) is the axial center line S of the drive shaft (7)
-8 to the axis of the wheel axle 06) provided at the bottom of the transmission case (1), and the mounting bracket is installed so that the distance from 9) is fixed parallel to the drive shaft (7) at the rear end O of the rotary frame (11) through which the
The strut (46) is fixed to the mounting bracket (4) with a fastener (51), and the tail wheel (45) attached to the lower end of the strut e61 is attached to the drive shaft (7) (two A plowing depth adjusting device for a walk-behind agricultural vehicle, characterized in that the plowing depth can be adjusted downward from the parallel Q to the horizontal direction.