JPS58158104A - Drive apparatus for inclining rotary shaft in walking type agricultural 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 in the tilling section of a walk-behind agricultural vehicle not only when the vehicle body is in a horizontal position G, but also when it is tilted. The present invention relates to a rotary shaft tilting drive device that can be used to drive a rotary shaft.

In conventional walk-behind agricultural vehicles, the traveling vehicle body and the tilling section are one part.
The rotary shaft is fixed to the body, and the rotary shaft is set to maintain a horizontal position with respect to the traveling wheels, and it is normal that the rotary shaft cannot be used at an angle with respect to the traveling vehicle body.

However, while there are demands for the development of work machines that can be used to scrape ridges diagonally, and to apply ridge-covering soil on top of the ridges during paddy rice cultivation, there is still a lack of interest. It is not only the work equipment that has not been perfected technologically or cost-wise (it is not the work equipment itself that is the cause, but the agricultural vehicles themselves that are equipped with the work equipment) that have not been perfected in terms of technology and cost. It can be said that it must be done.

In other words, if we were to assume that the rotary shaft of the tilling section could be rotated by tilting it to the left or right with respect to the traveling vehicle body, the work of shaving and painting the ridges would be extremely simple. In particular, for work such as ridge scraping, there is no need for special implements, and ordinary tillers can be used (see Figure 4). Since the rotary shaft of the tiller is rotated by a chain drive, it is not possible to tilt the rotary shaft to the left or right against the traveling vehicle body, or to switch the rotary shaft to the horizontal direction. It can be said that it is possible.

The present invention provides an inclination drive device for a rotary shaft in a walking agricultural vehicle, in which the rotary shaft of a tilling section is set in both horizontal and inclined positions with respect to the traveling vehicle body. The aim is to improve walking-type agricultural vehicles by making it possible to rotate the rotary shaft.The gist of this is to transmit the power of the prime mover to the left and right running wheels and the rotary shaft in the cutout. In a walk-behind agricultural vehicle that has a transmission case, the center of the drive shaft, which extends diagonally downward from the upper part of the transmission case on the side opposite to the prime mover, is arranged so that it coincides with the left-right center line of the machine body. A bevel gear transmission is provided on the upper and lower shafts of the drive shaft to enable the rotary shaft to rotate. A rotary frame with an upper and lower flanges is fixedly installed, and the upper flange is fixed to the flange surface of the transmission case, and the lower flange has a circular arc with the drive shaft at its center. The rotary shaft can be rotated by tightening the bevel gear case that supports the rotary shaft to the drive shaft cover at any rotational position via a bolt inserted into the long hole. We have made it possible to set the axis in both horizontal and inclined positions.
This is what exists.

In the following, the present invention will be specifically explained based on the illustrative drawings (Iη is the prime mover (1), the transmission case (1),
5), left and right running wheels (2), (2 negative handle (+81
It is a walk-behind agricultural vehicle equipped with a tiller section (3), etc. The power of the prime mover f11 is the engine pulley (19)
, input pulley (2)), ■ belt (2)), etc.
Main clutch lever that controls the power connection/disconnection mechanism (not shown)
(44) transmits power to the input shaft. The input shaft (A) is a fixed gear (-), 6114+ is fixed,
The fixed gears (A) and 61141G are slidably engaged with each other, and the sliding gears (E) and -) are wedge-fitted onto the intermediate shaft (61141G). Transmission gear I451 meshing with the transmission gear I451, transmission gear I6 meshing with the transmission gear
) is fixed to the intermediate shaft 07) together with the sprocket (A), and the sprocket -) and the wheel axle 610)! There is a check 2I29 between this and the fixed sprocket (8+).
) is wound around the left and right running wheels (2), (2)' mounted on the wheel shaft m), and the agricultural vehicle (171) is driven at two speeds.

In addition, the rotary shaft of the tilling section (8) and (4) 5 sliding gear for transmitting power -1-) are wedge-fitted into the input shaft so as to be slidable, and the transmission shaft ( It is constructed so that it selectively slides and meshes with a fixed gear (1-1-) fixed to the gear (1). A bevel gear is wedge-fitted onto the transmission shaft. (6) is the drive shaft, which extends diagonally downward from the upper part of the transmission case (5) on the side opposite to the prime mover (1), and its center coincides with the left-right center line X-X of the aircraft. It is arranged so that The drive shaft (6) has a bevel gear, which is always meshed with the bevel gear, wedged into the upper end thereof, and a small bevel gear which is wedged into the lower end thereof. (7) is a tubular drive shaft cover with an upper flange (11) and a lower flange (12) fixedly attached, and a bearing (4+1, G
A drive shaft (6) is rotatably supported via a shaft 16. The upper flange (11) is fixed to the flange surface (1B) of the transmission case (5), and a long arc-shaped hole (14) centered on the drive shaft (6) is bored in the lower flange (1). The bevel gear case (161, which pivotally supports the rotary shaft (4), is attached to the drive shaft cover (7) via the pin (161) that engages in the elongated hole (14)). The rotary shaft (4) can be set in either a horizontal or inclined position by setting it in the rotational position and tightening it. (B)) is fixedly attached to the rotary shaft (4). The large bevel gear is the small bevel gear 6I9.
) to drive the rotary shaft (4).

The drive device configured in this way drives the rotary shaft (
4) is a configuration that can obtain two rotational speeds.

Various working machines (not shown) are attached to the left and right sides of the rotary shaft (4), and are used to perform tasks such as tilling, intertilling, cultivating soil, raising furrows, filling soil, and shaving.

(10) is a rotary frame fixed to the drive shaft cover (7), and is provided with a rotary cover (8) and a pitch (9). G18) shows a resistance rod, but Hitzchi (9) is equipped with various auxiliary work equipment such as a tail wheel, a tiller, and a rake. - means ridge;
09) is a tiller claw. (a) is the running wheel (2), (
2)' indicates the rotation direction, and (b) indicates the rotation direction of the rotary shaft (4).

Next, we will explain the operational states of the present invention in ordinary tillage work and soil mulching work, which are performed with the rotary shaft (4) of the tilling section (8) set horizontally with respect to the traveling vehicle body, and when the rotary shaft is set in a horizontal state with respect to the traveling vehicle body. An example of a ridge shaving operation in which the ridge is set in an inclined state and the ridge is scraped diagonally will be explained. First, in normal tillage work, the rotary shaft (4) of the bevel gear case (16) is held horizontally with respect to the running wheels (2), (2)', and the drive shaft cover (7) is lower flange 04
hole (14) inserted into the slot)
(Tighten the bevel gear case (161 through 151 to the lower flange of the drive shaft cover (7). Then, attach the tilling claw to the rotary shaft (4),
By setting the rotary shaft (2)' and the rotary shaft (4) to a desired rotational speed via a transmission mechanism (not shown), normal tillage work can be performed.

In this state, the tilling claws 4 are placed on the rotary shaft (4) so that the right and left tilling claws are facing in the same direction, for example, the right tilling claw is moved to the right, and the left tilling claw is also moved to the right. If you carry out mulching work by wearing a plow for throwing, all of the plowed gravel will be thrown to the right, making it possible to carry out extremely efficient mulching work. This is because in the conventional chain-driven tillage section, there is a wide chain case on the side, so the gravel that is about to be thrown to the right by the left tilling claw is blocked by the chain case. However, in the present invention, instead of the wide chain case on the side, a thin tubular drive shaft cover (7) is installed to block the thrown debris. This is why it exhibits outstanding performance in this type of earth-filling work.

Next, to tilt the rotary shaft (4), loosen the above-mentioned pole (151) and rotate the bevel gear case (16) in the desired direction to the left or right within the range of the elongated hole. If you tighten it after the rotary shaft (4) is tilted, the rotary shaft (4) will be fixed in an inclined state.In this state, if you attach the tilling claws (49) to the rotary shaft (4) and till the furrow, the rotary shaft (4) will be fixed in an inclined state. As shown in Figure 4, the ridges are scraped off diagonally (this makes it unnecessary to use a dedicated working machine to scrape off the ridges diagonally).

As detailed above, in the rotary shaft tilt drive device for a walk-behind agricultural vehicle according to the present invention, the rotary shaft of the tilling section is driven by extending the drive shaft directly from the transmission case. Since it uses a direct drive system, the structure is extremely simple compared to conventional agricultural vehicles that use a chain system, and it is not only possible to manufacture the agricultural vehicle at a lower cost, but also allows the rotary shaft to be used as the axis. The device for attaching the supporting bevel gear case to the traveling vehicle body by switching between horizontal and inclined positions is structured so that bevel gear transmission devices are interposed above and below the drive shaft. can be realized very easily.

The walk-behind agricultural vehicle according to the present invention is not only capable of efficiently carrying out tasks ranging from plowing to general management work, but also has been developed with a work machine for ridge scraping and ridge painting as an attachment. Needless to say, this will dramatically accelerate the pace of development.

[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 walk-behind agricultural vehicle, FIG. 2 is a plan sectional view of the main parts in FIG. 1, and FIG. A in Figure 2
FIG. 4, a partial view of the section taken along the line -A, is an explanatory diagram of a state in which the tilling section is tilted. In these drawings, (1) is the prime mover, (2), (2
)' are left and right running wheels, (8) is a tiller, (4) is a rotary shaft, (5) is a transmission case, (6) is a drive shaft,
(7) is the drive shaft cover, (8) is the rotary cover,
(9) is a hitch, (10) is a rotary frame, (Il
l is the upper flange, (1st is the lower flange, (14) is the long hole, (15J is the bolt, and (16) is the bevel gear case. Patent applicant's representative Patent attorney Ike Koshi Mitsuru +7

Claims (1)

[Scope of Claims] A walking vehicle having a transmission case (5) that transmits the power of the prime mover to the left and right running wheels (2), (2)' and the rotary shaft (4) of the hollow part (3). Looking at the agricultural vehicle G, from the upper part of the transmission case (5) on the side opposite to the prime mover fli,
The center of the drive shaft (6) extended in this direction is aligned with the left-right center line When a transmission is provided to make the rotary shaft (1'4) rotatable, the drive shaft cover (6) that supports the drive shaft (6) is
7)&2 is a rotary frame (10) having a rotary cover (8), a hitch (9), etc., and a lower flange (ul, (+21) are fixedly installed, and the upper Flange (nl is the flange surface f18 of the transmission case (5)
1 G is fastened to the lower flange (on the 1st, an arc-shaped long hole (14) centered on the drive shaft (6) is bored, and the hole that engages in the long hole (1)) +161 Via
Bevel gear case (16) that supports the rotary shaft (4)
) to the drive shaft cover (7) to any rotational position, the rotary shaft (4) can be set in both horizontal and inclined positions. A rotary shaft tilting drive device for a walk-behind agricultural vehicle.