JPH0518525B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a grass cutting machine.

(Prior Art) As a grass clippings collector for mowing and collecting grass, etc., there is a machine shown in Japanese Patent Application No. 178313/1982. A grass box is attached, and an input case is provided on the left and right center of the mower's mower.
The input case is equipped with an input shaft that receives power transmission from the vehicle and drives the cutter of the mower, and a power extraction shaft that works in conjunction with the input shaft and projects from the input case to the right side. A feeding device with a built-in impeller is fixed with several bolts, and a power receiving shaft protruding from the feeding device toward the power take-off shaft and a power take-out shaft are releasably connected via a shaft coupling device. By the rotation of the impeller of the feeding device,
The grass cut by the cutter is fed to the grass collecting box via the duct.

By the way, it is possible to easily select between collecting grass clippings in a grass collection box and discharging grass clippings directly to the outside from the side end of the mower deck, or to facilitate maintenance and inspection of the feeding device. In order to do this, it is necessary to be able to easily attach and detach the feeding device.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional method, the feeding device was fixed to the mower deck with several bolts, so there was a problem that the feeding device could not be easily attached to and detached from the mower deck. Ta.

An object of the present invention is to provide a grass cutting machine that can solve the above problems.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the present invention is that a mower 8 and a grass collection box 9 in which grass clippings are stored are mounted on the traveling vehicle 1, and the mower A plurality of cutter shafts 13 having a cutter 11 at the bottom thereof are supported on the mower deck 10 of No. 8 so as to be rotatable around a vertical axis, and a drive mechanism for driving the cutter shafts 13 by receiving power transmitted from the traveling vehicle 1 on the mower deck 10. , a power take-off shaft 20 that interlocks with the cutter shaft 13, a feeding device 23 having a built-in impeller 26 is provided on one side in the left-right direction of the mower deck 10, and a power receiving shaft of this feeding device 23. 45 and the power take-off shaft 20 are releasably connected via a shaft coupling device 49, and as the impeller 26 of the feeding device 23 rotates, the grass cut by the cutter 11 is transferred to the grass collection box 9 via the duct 53. In the case where the feeding device 23 is fed to the outside of the mower deck 10, one end in the front and back direction of the mower deck side portion of the feeding device 23 is pivoted to the mower deck 10 by a removable vertical pivot pin 30. It is said to be able to rotate freely in both directions,
A locking device 32 is provided to releasably lock the feeding device 23 at the mounting position relative to the mower deck 10, and rotation of the feeding device 23 causes the power receiving shaft 4 to be locked.
5 is capable of changing its position between a connected position and a released position with respect to the power take-off shaft 20.

(Function) When removing the feeding device 23 from the mower deck 10, first, after releasing the connection between the feeding device 23 and the duct 53, the feeding device 2 is removed by the locking device 32.
Unlock 3.

Next, the feeding device 23 is rotated outward around the pivot pin 30, and the power take-off shaft 20 and the power receiving shaft 4 are rotated.
Cancel the connection with 5.

After that, remove the pivot pin 30 and remove the feeding device 23.
Remove it from the mower deck 10.

Also, the feeding device 23 is attached to the mower deck 10 by the reverse procedure to the above.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings. In FIG. 5 showing the overall configuration, 1 is a running vehicle, which is a two-axle, four-wheel type vehicle having front wheels 2 and rear wheels 3. The vehicle is of a riding type and is equipped with a bonnet 4, a steering handle 5, a step 6 and a seat 7.

Reference numeral 8 denotes a mower, which is attached to the lower abdomen of the vehicle 1 so as to be able to be raised and lowered via a lifting device (not shown).
A grass collection box 9 is attached to the rear end.

As shown in FIGS. 1 to 3, the mower 8 includes a mower deck 10 and cutters 11 arranged at the center and on both sides thereof. The mower deck 10 has a mountain-like shape in plan view with the center of the front part protruding forward, and a cut grass passage 12 that projects upward is provided on the front side of the mower deck 10, as shown in FIG. Each cutter 11 is rotatably supported on the mower deck 10 via a vertical cutter shaft 13, and is rotationally driven by the cutter shaft 13 at the center of the mower deck 10 via a pulley 14 and a belt 15.

The central cutter shaft 13 is inserted into and supported by the input case 16, and the bevel gears 17, 1 are inserted into the input case 16.
It is interlocked and connected to the input shaft 19 via 8.

The input shaft 19 projects forward from the input case 16 and is operatively connected to a front PTO shaft at the front of the vehicle 1 via a shaft coupling device (not shown).

A power take-off shaft 20 protrudes rearward and diagonally to the right from the input case 16.
0 is the bevel gear 18 via the bevel gear 21
is linked to.

That is, the power of the front PTO shaft is transmitted to the input shaft 19,
Bevel gears 17, 18, pulley 14 and belt 1
Three cutter shafts 13 are driven through a drive mechanism having a bevel gear 1, etc.
The power take-off shaft 20 connects to the cutter shaft 1 via 8 and 21.
3, and power is transmitted via this power take-off shaft 20 to a feeding device 23, which will be described later.

The grass clippings passage 12 is for sending the grass clippings cut by the cutter 11 and lifted by the wind generated by the wind raising part 11a to the grass clippings discharge port 22 at the right end of the mower deck 10. A feeding device 23 is provided opposite to.

The feeding device 23 has a case 24 that is approximately circular in side view.
and a feeding impeller 26 supported by a horizontal shaft 25 within the case 24.

A suction port 28 is formed on the lower side of the inner plate 27 of the case 24 and communicates with the grass clippings discharge port 22.
Further, a guide portion 29 having an inverted U-shaped cross section and surrounding the suction port 28 is provided on the inner plate 27 and protrudes toward the discharge port 22 side.

The front and rear walls and the top wall of the guide section 29 are connected to the discharge port 22.
The mower deck 1 of the guide part 29 is in contact with or faces the front and rear walls of the guide part 29 from the outside with a small gap between them.
The front end of the side end on the 0 side is the mower deck 10
The feeding device 23 is pivotally supported by a removable vertical pivot pin 30 so as to be rotatable to the outside of the mower deck 10.

By the way, on the right side of the mower deck 10, an upright reinforcing plate 31 is arranged in the front-rear direction, and between this reinforcing plate 31 and the guide part 29, the feeding device 23 can be freely released to the attached position. A locking device 32 for locking is interposed as described below.

That is, on the outer surface of the reinforcing plate 31, a pair of front and rear brackets 33 are provided to protrude outward, and the lower end of each bracket 33 is brought into contact with the top wall of the guide section 29, so that the feeding device 23 is positioned at the mounting position. A positioning portion 34 is formed to be positioned.

Reference numeral 35 denotes a lock pin, which is inserted through both brackets 33 so as to be movable in the front and back direction, and whose rear end is removably inserted into the insertion tube 36, thereby locking the feeding device 23 in the mounting position. Insertion tube 36
is fixed to the rear end of the top wall of the guide section 29.

A spring receiver 3 is located midway in the axial direction of the lock pin 35.
7 is provided, and a spring receiver 37 and a front bracket 33 are provided.
In between, a spring 38 wound around the lock pin 35 is interposed in a resilient manner, so that the lock pin 35 is pushed backward, that is,
It is biased in the insertion direction into the insertion tube 36.

Further, the front part of the lock pin 35 is curved to form a J-shape as a whole, and the front end part is removably engaged with a retaining plate 39 fixed to the inner surface of the reinforcing plate 31. As a result, the lock pin 35 is held in a position separated from the insertion tube 36.

By the way, the impeller 26 of the feeding device 23 has a flange 40 fixed to the horizontal shaft 25 and a flange 40.
It has blades 41 etc. that are equally distributed in the circumferential direction.

The horizontal shaft 25 is supported by an outer plate 43 of the case 24 via a bearing 42, and a pulley 44 is fixed to the outer end of the horizontal shaft 25.

Reference numeral 45 denotes a power receiving shaft protruding toward the power take-off shaft 20 side, which is supported by the rear end of the case 24 via a bearing 46 and arranged parallel to the horizontal shaft 25.
5 is interlocked with a pulley 44 via a pulley 47 and a belt 48.

The power receiving shaft 45 is connected via a shaft coupling device 49,
The shaft coupling device 49 is interlocked and connected to the power take-off shaft 20.
has a transmission shaft 50 and a pair of universal joints 51 provided on both shoulders thereof.

As the feeding device 23 rotates around the pivot pin 30, the power receiving shaft 45 is moved to the connecting position where it is connected to the power take-off shaft 20 via the shaft coupling device 49 and the connecting position, as shown in FIG. As shown in FIG. 2, the position can be freely changed to the release position where the connection is released.

The upper part of the case 24 is provided with an air outlet 52 that protrudes obliquely upward to the rear, a duct 53 is detachably connected to the air outlet 52, and the duct 53 is connected to the grass collection box 9.

54 is a gauge wheel for adjusting cutting height, and 55 is a limit gauge wheel.

According to the embodiment configured as described above, when discharging grass clippings outward from the grass clippings discharge port 22 of the mower deck 10 or performing maintenance and inspection of the feeding device 23, the feeding device 23 is It is necessary to remove it, but in that case, perform the following work.

That is, first, the connection between the feeding device 23 and the duct 53 is released, and the lock pin 35 is pulled forward to be locked to the holding plate 39, as shown in FIG.

Next, as shown in FIG. 2, the feeding device 23 is rotated outward around the pivot pin 30 to disconnect the power take-off shaft 20 and the universal joint 51 on the shaft 20 side. .

After that, remove the pivot pin 30 and remove the feeding device 23.
Remove it from the mower deck 10.

Furthermore, when attaching the feeding device 23 to the mower deck 10, the procedure is reversed to that described above. First, with the lock pin 35 locked to the retaining plate 39, the feeding device 23 and the mower deck 10 are attached. are connected by a pivot pin 30.

Next, the feeding device 23 is rotated inward around the pivot pin 30, and the guide portion 29 is attached to the bracket 3.
The feeding device 23 is brought into contact with the positioning portion 34 of No. 3.
At the same time, position the power take-off shaft 2 at the mounting position.
0 and the universal joint 51 on this shaft 20 side.

After that, the lock pin 35 and the holding plate 39 are unlocked and inserted into the insertion tube 36, and the feeding device 23 is inserted into the insertion tube 36.
is fixed to the mower deck 10.

In the embodiment, the front end of the feeding device is pivoted to the mower deck, but the rear end may be pivoted. The connection and release of the power take-off shaft and power reception shaft,
Although this is performed between the power take-off shaft and the universal joint on this shaft side, it may be performed between the power receiving shaft and the universal joint on this shaft side.

Further, as the shaft coupling device and lock device, devices other than those in the embodiments may be used.

(Effects of the Invention) As described in detail above, according to the present invention, the attachment and detachment of the feeding device to the mower deck can be performed by operating the locking device, rotating the feeding device around the pivot pin, and accompanying this rotation. This can be done by connecting and disconnecting the power output shaft and power receiving shaft, inserting and removing the pivot pin, etc. Compared to conventional methods, the feeding device can be easily attached and detached, making it easier to collect grass clippings. You can easily select whether to weed or not and perform maintenance and inspection of the feeding device. The present invention has the above advantages and is of great practical benefit.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention, and FIGS. 1 and 2 are top views showing different operating states, and FIG.
The figure is a partially cutaway rear view of the main parts, FIG. 4 is a configuration diagram of the power system, and FIG. 5 is a side view of the whole. 1... Traveling vehicle, 8... Moa, 9... Grass collecting box, 10... Moor deck, 11... Cutter,
16...Input case, 19...Input shaft, 20...
Power take-off shaft, 23... Feeding device, 26... Impeller, 30... Pivot pin, 32... Lock device, 4
5...Power receiving shaft, 49...Shaft coupling device.

Claims (1)

[Scope of Claims] 1. A mower 8 and a grass collection box 9 in which grass clippings are stored are mounted on a traveling vehicle 1, and a plurality of cutter shafts 13 having cutters 11 at the bottom are attached to a mower deck 10 of the mower 8 as vertical shafts. a drive mechanism which is rotatably supported and receives power transmission from the traveling vehicle 1 onto the mower deck 10 to drive the cutter shaft 13;
A power take-off shaft 20 that interlocks with the cutter shaft 13 is provided, and a feeding device 23 having a built-in impeller 26 is provided on one side in the left-right direction of the mower deck 10. A power receiving shaft 45 of this feeding device 23 is provided. and the power take-off shaft 20 are releasably connected via a shaft coupling device 49, and with rotation of the impeller 26 of the feeding device 23,
The grass cut by the cutter 11 is transferred to the duct 53.
, one end of the mower deck side portion of the feeding device 23 in the front and back direction is pivotally supported on the mower deck 10 by a removable vertical pivot pin 30. The device 23 is rotatable to the outside of the mower deck 10,
A locking device 32 is provided which releasably locks the feeding device 23 at the mounting position with respect to the mower deck 10, and when the feeding device 23 rotates, the power receiving shaft 4
5 is a mowing and grass collector characterized in that the position of the mower 5 is changeable between a connected position and a disengaged position with respect to the power take-off shaft 20.