JPH0437682B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention provides grass collecting plates arranged at a predetermined distance apart from each other on the lateral side of a vertically rotating rotor in a forward/reverse switching operation of the vertically rotating rotor. The present invention relates to a grass cutter having a structure that allows the position to be changed from side to side in conjunction with the above.

(b) Prior art In a pasture cutter using a cutting mechanism with a vertically rotating rotor, the grass clippings cut by the vertically rotating rotor are bounced around and discharged by a discharge guide plate attached to the rotor. If you work in a dormant state, the grass clippings will be scattered widely around you, making it time-consuming to collect the grass clippings after cutting, and increasing the amount of collection loss. Therefore, as seen in Japanese Patent Application Laid-Open No. 51-96439, grass collection plates have been arranged on the lateral side at a predetermined distance from the vertical rotor to form a grass collection path, and the grass clippings are scattered over a wide range. It has been proposed to prevent this, but the existing proposal is to provide a rotor with a vertical axis rotating in only one direction, and the grass cutting side of the vertical axis rotating rotor that rotates in one direction. A grass collection board is fixedly installed on the side.

(c) Problems to be solved by the invention By the way, when cutting grass with a reaper, if the uncut grass stalks are covered with grass clippings, it becomes difficult to perform later cutting and grass collection operations. or
Grass clippings that are left overgrown can cause various problems such as inhibiting the growth of planted grass stems, so grass clippings must be discharged onto the already mowed area, but the above-mentioned method Although the proposed mower with the grass collection plate structure can prevent grass clippings from scattering over a wide area, the rotation direction of the vertical axis rotor and the position of the grass collection plate are constant, and mowing by reciprocating operation (reciprocating mowing) is difficult. ), it will not be possible to constantly discharge grass clippings into the mowed area,
As shown in Figure 5, the work must be carried out using the so-called rotary cutting method in which the work is carried out while going around the grass field (field), which not only reduces the efficiency of the cutting process but also takes time to collect grass clippings in the subsequent process. There is a problem.

The present invention focuses on the above-mentioned problems of conventional machines and is implemented with the aim of solving the problems. To provide a grass cutter that is improved so as to be able to accurately discharge grass clippings onto a previously cut area while preventing the grass from scattering over a wide area.

(d) Means for Solving the Problems In other words, the present invention provides a structure in which the harvested material guiding plate 24, which protrudes convexly forward in plan view and whose hem portions on both sides extend outwardly and posteriorly of the machine, is installed vertically for both forward and reverse purposes. Shaft rotating rotor 2
A grass collecting plate 28 is fixedly disposed above the rotor 22 and disposed on the lateral outer side of the vertically rotating rotor 22.
The vertical axis rotating motor 22 is installed on the left side or right side side so that the position can be changed, and the position of the grass collection plate 28 is changed before the vertical axis rotating rotor 22 starts rotating in the switching direction. The grass cutting machine is characterized in that the vertical shaft rotating rotor is constructed by interlocking a rotation direction switching system and a grass collection board position changing system.

(E) Function In the pasture cutter of the present invention, when the grass collecting plate is turned to the side where no stem culms are planted, the vertical shaft rotating rotor rotates in the direction toward the grass collecting plate. Therefore, if the aircraft continues forward in the same condition, the grass clippings that are cut and discharged by the vertical rotor will be prevented from scattering by the grass collecting plate and will be collected in rows on the ground where no stems or culms will be planted. and released.

Then, as the aircraft reaches the headland of the grassland and turns around to return to its homeward route, the direction of rotation of the vertical rotor is changed and the grass collecting plate is moved in conjunction with the operation. , it is moved to the opposite side from the outbound trip and is still located on the side where no stem culms are planted (already cut field side), and on the return trip, the grass clippings are prevented from scattering by the grass collection board as on the outbound trip. However, they are often released in concentrated areas on the ground where no stems or culms are planted.

Therefore, with the grass cutter of the present invention, mowing can be carried out in the adjacent folding operation (reciprocating mowing) while constantly discharging the grass clippings accurately onto the already cut field without scattering the grass, thereby reducing the need for circular mowing work. Compared to the conventional method, which required cutting, mowing work can be done more efficiently, and the work of collecting grass clippings is also easier.

In particular, in the pasture cutter of the present invention, when the horizontal position of the grass collecting plate is changed in conjunction with switching the rotational direction of the vertical axis rotating rotor, the vertical axis is rotated after the position of the grass collecting plate is changed. The rotor is configured to restart rotation, and the grass collection plate is always in the state of receiving grass clippings even immediately after the turning operation, so it is possible to avoid scattering grass clippings during the entire process of reciprocating mowing work. This allows work to be done while the grass is gathered. Furthermore, even when changing the direction of grass clipping discharge during the outbound or return trip, if the direction of rotation of the vertical rotor is changed, the rotation of the vertical rotor 22 is always preceded by the rotation in the switched direction. Since the position of the grass collecting board is changed to the position where it receives the grass clippings, the work can be carried out smoothly without scattering the grass clippings.

(f) Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

(A) is a self-propelled aircraft configured with a single shaft and two wheels. Can be driven by
The input shaft 4 of the speed change transmission mechanism is connected to a frame 5 extending rearward from the transmission case 1.
The main clutch 8 is connected to the output shaft 7 of the engine 6 installed in the
They are configured to be interlocked and connected via a built-in transmission mechanism 9. Further, a control handle 10 is provided extending rearward at the upper part of the engine mounting part, and
Reaping support part 1 facing forward from transmission case 1
1 is provided, and the front and rear parts of the body A are configured to be able to swing up and down like a seesaw around the axle 2 mentioned above.

A reaping drive case 12 is installed at required locations on the reaping support section 11, and an input shaft 13 of the case 12
is interlocked and connected to the PTO shaft of the above-mentioned transmission case 1 via a transmission device 14. Also, a vertical output shaft 15 is vertically provided from the reaping drive case 12, and this shaft is connected to the PTO shaft of the reaping section B. It is used as a reaping drive shaft.

Between the reaping drive shaft 15 and the input shaft 13, for example, a bevel gear mechanism as shown in FIG.
Alternatively, the movement is coupled by another suitable forward/reverse transmission mechanism 16.

The switching lever 17 of the forward/reverse transmission mechanism 16 is the operating lever 1 provided at the hand of the operating handle 10.
8 with an operating cable 19, and the operating lever 1
By switching and locking the reaping shaft 8 to the forward/reverse position a, the neutral position b, and the reverse position c, the above-mentioned reaping drive shaft 1
The structure is such that the rotation of 5 can be controlled.

A cutting blade body 20 is attached to the peripheral edge of the lower end of the reaping drive shaft 15, and a reaping material release guide plate 21 is attached to the upper surface.
A rotating rotor 22 is installed so that it can rotate integrally, and a bowl-shaped sled body 23 is attached to the lower side of the rotating rotor 22.

Each cutting blade body 20 is formed to have both front and front blades so that it can cut even if the rotor 22 rotating together with the cutting drive shaft 15 operates in either forward or reverse direction.
In addition, the cutting material discharge guide plate 21 on the upper surface of the rotor 22
Also, the front and rear edges 21a and 21b are formed with discharge action portions so that the cutting material discharge action is performed even when the rotor rotates in either the forward or reverse direction.

In addition, in the upper part that does not interfere with the rotation of the guide plate 21, there is a cutting material guide plate 24 that protrudes convexly forward in plan view and has both hem portions gradually extended toward the rear of the machine A. Mounted in fixed position.

At the center of the front end of the reaping support part 11 in the width direction of the machine,
A hitch 25 is provided, and the hitch 25 has a vertical axis 2.
A support arm 27 is attached to the support arm 27, which is rotatable around 6. At the tip of the support arm 27, there is a grass collection plate 2 formed with an appropriate width in the front-rear direction and the up-down direction.
8 is installed.

The grass collecting board 28 has the above-mentioned support arm 27 attached to the vertical axis 26.
By rotating around the center, the rotor 22 can be positioned on the outer right side at an appropriate distance from the outer diameter of the rotor 22, or it can be positioned on the outer left side turned 180 degrees from this position. The position is controlled by stoppers 29a and 29b.

The support bowl 27 is configured to be turned in conjunction with the above-described operation of switching the rotational direction of the rotor 22, and specifically, for example, by means as shown in FIG. 3, or by other means. Appropriate actuation means are employed. The interlocking configuration example in Figure 3 is as follows:
Operation system 1 to switch forward/reverse transmission mechanism 16
7, 18, 19 are actuated, switches 30a, 30b are installed to detect and respond to the actuation of any of the operating systems, and a stroke end switch is installed at or near the stoppers 29a, 29b. 31a and 31b are provided, and these switches are connected to the forward/reverse/neutral control circuit 3.
2 to form a motor operating circuit,
In response to the control signal of this circuit, the forward/reverse rotation motor 33 for rotating the support arm is activated and stopped to switch the position of the grass collecting plate 28.

Note that the interlocking switching structure between the rotor rotation and the position of the grass collecting plate is not limited to the above-mentioned electrical one, but can also be used, for example, to mechanically switch the support arm 27 using the rotation of the output shaft 15 of the reaping drive case 12. It is also possible to configure the operation lever 1 so that it can be moved to
8 can be transmitted to the support arm 27 via a link mechanism, an operating cable, etc. to operate it.
In addition, various modifications such as using hydraulic pressure are possible. When switching the rotation of the rotor and the position of the grass collecting plate in conjunction with any of these various means, first the position of the grass collecting plate is changed, and after that, the rotor moves in the rotation direction. The interlocking structure has a time lag for the start of operation, which is advantageous in terms of grass collection performance and safety.

The other reference numeral 34 in the figure is a gear shift lever for switching the transmission mechanism in the transmission case, 35 is a main clutch operating lever, and 36 is a reaping clutch lever. If the mechanism has a neutral position, this may be omitted and the operation lever 18 may be used instead. Further, R and L indicate the rotation direction of the rotor.

Next, to explain the operation of the illustrated embodiment, when the operating lever 18 is locked at position a, the forward/reverse transmission mechanism 16 is in the forward rotation transmission state, the rotor 22 rotates forward R, and the support arm 27 is extended to the right side of the fuselage and is locked to the stopper 29a,
Position the grass collection plate 28 on the right side of the rotor,
A discharge passage is formed between the grass collection plate 28 and the right side of the guide plate 24, and the forward/reverse rotation motor 33 is stopped.

Therefore, if the reaper constructed in this way is advanced from one end of the grass field, the rotor 2
The cutting blade body 20 of No. 2 cuts the stem culm, and the discharge guide plate 21
The grass is sprung out by the discharge action part 21a and is placed in rows on the ground in the discharge passage while being prevented from scattering outward by the grass collecting plate 28.

When the reaper reaches the headland of the grazing area, the machine is turned to return to the homeward direction.
8 to position c.

Then, the switch 30b is first activated by this operation, and the motor 33 is operated in reverse via the control circuit 32. Due to the motor reverse operation, the support arm 27, which has been located on the right side of the rotor, is rotated.
is rotated to the left until it touches the stopper 29b, changing the position of the grass collection plate 28 by 180 degrees,
When this position is reached, the stroke end switch 31b operates to stop the motor 33. Then, the forward/reverse rotation transmission mechanism 16 is connected to a reverse rotation transmission state, and the rotor 22 starts rotating in reverse rotation.

Therefore, at this time, the rotational direction of the rotor 22 is L, and the discharge passage is formed between the grass collection plate 28 and the left side of the guide plate 24 on the left side of the rotor. If the machine advances to the area adjacent to the area harvested in the previous process, the stem culms in that area can be harvested and placed in rows on the area where the cuttings were made in the previous process. As shown in FIG. 4, the grass field can be continuously mowed back and forth from one side by switching the position of the grass collecting plate while performing the turning operation.

(G) Effects of the Invention As explained above, the present invention provides a vertically retractable reaping material that can be used in both forward and reverse directions by using the reaped material guiding plate 24 that protrudes convexly forward in plan view and has skirt portions on both sides extending toward the posterolateral side of the machine. A grass collecting plate 28 fixedly disposed above the rotor 22 and on the outer side of the rotor 22 is attached to the left or right side of the rotor 22. The rotation direction switching system and the rotation direction switching system of the vertical axis rotating rotor are installed so that the position of the grass collection plate 28 can be changed before the vertical axis rotating rotor 22 starts rotating in the switching direction. Since it is configured in conjunction with a grass plate position conversion system, it is possible to perform back-and-forth mowing work without difficulty while constantly discharging grass clippings accurately onto the mowed area without scattering the grass, eliminating the need to mow in a circular motion. Compared to conventional grass cutters, this has the advantage of significantly improved work efficiency and the ability to collect grass clippings in a labor-saving manner. In particular, when the rotational direction of the vertical rotor 22 is changed and the grass collecting plate 28 is reactivated, the position of the grass collecting plate 28 is changed to the stem culm receiving position. When you start mowing after turning, or when you temporarily change the direction of grass clippings during cutting, the grass collection board prevents the grass clippings from scattering outward from the beginning. By cooperating with the scattering prevention function of the grass collection plate 28 and the guiding function of the cuttings guide plate 24 whose hem portions on both sides extend toward the rear and outside of the machine, even when grass clippings are discharged to either the left or right side, Grass is collected well, and the right and left discharge and collection of grass clippings can be done only by changing the position of the grass collection plate 28 without moving the cuttings guide plate 24, so the structure is simple and the operation and handling are easy. There is an effect.

[Brief explanation of drawings]

FIG. 1 is an overall plan view of a grass reaper according to an embodiment of the present invention, and FIG. 2 is an overall side view of the same reaper.
Fig. 3 is an explanatory diagram showing an example of a configuration for interlocking switching between the rotor rotation and the position of the grass collecting plate, Fig. 4 is an explanatory diagram showing the working mode of the reaper of the present invention, and Fig. 5 is an explanatory diagram of the working state of the conventional reaper. be. 22... Vertical shaft rotating roller, 28... Grass collection board.

Claims (1)

[Claims] 1. A cutting material guide plate 24 that protrudes convexly forward in a plan view and has hem portions on both sides extending posterolaterally of the machine.
A grass collecting plate 28 is fixedly disposed above the vertically rotating rotor 22 for forward and reverse rotation, and is also disposed on the lateral outer side of the vertically rotating rotor 22. Alternatively, it is installed on the right side so that the position can be changed, and the rotation of the vertical axis rotating rotor is changed so that the position change of the grass collecting plate 28 is performed prior to the start of rotation of the vertical axis rotating rotor 22 in the switching direction. A grass cutter characterized in that a direction switching system and a grass collection board position changing system are configured in conjunction with each other.