JP2003033107A - Grass-collecting bucket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the center of gravity of a machine body in raising of a bucket body from largely moving to the rear and discharge lawn grasses in the bucket body in a stable state. SOLUTION: In this bucket, the bucket body 6 is connected through a pair of first left and right rings L1 and a pair of second left and right rings L2 to a mast strut 5 in the rear of the machine body on the both side of the bucket body 6 and the bucket body 6 is lifted or lowered by a lifting and lowering cylinder S1 connecting a rod to the second rings L2 . When the bucket body 6 is raised, lengths of first and second lings L1 and L2 and connecting positions of both ends are determined so that the bucket body 6 can be raised nearly right above by slightly rotating the bucket body 6 in anticlockwise direction when viewed from the right side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grass collecting bucket device mounted on a rear portion of a machine body for sucking turf grass cut by a rotary type mower portion and the like to collect grass. It is a thing.

[0002]

2. Description of the Related Art For example, a conventional grass collecting bucket device having a structure shown in FIG. 5 is known. The grass collecting bucket device B ′ is mounted on a lawn surface cleaning machine, and the lawn surface cleaning machine includes a suction unit 43 including a rotating brush 41 and a blower blade 42. Further, a grass collecting bucket device B ′ is disposed behind the suction unit 43 in the machine body 44, and the bucket body 45 has a pair of left and right side surfaces, first and second.
Is connected to a mast strut 49 which is erected at the rear portion of the machine body 44 via the respective links 46 and 47, and the lower first link 46 and the lower end portion of the mast strut 49 are connected by an elevating cylinder 51. Has been done. Further, the outlet 52 of the bucket body 45 is arranged on the back side in the grass collecting state, and the outlet 52 can be opened and closed by a lid 54 operated by an opening / closing cylinder 53.

The first and second links 46, 47 are also provided.
Are arranged almost parallel along the oblique direction in the grass collection state,
One end of them is connected to the upper end of the mast strut 49 at a predetermined interval in the vertical direction, and the other end is discharged from both side surfaces of the bucket body 45 at the grass collecting position. It is connected to a portion close to the outlet 52 and below the central portion in the height direction at a predetermined interval along the vertical direction.

Therefore, the rod 51 of the lifting cylinder 51 is
When a is projected, the bucket body 45 is rotated clockwise in the right side view and is lifted upward obliquely rearward of the machine body 44, and its discharge port 52 is directed obliquely downward, It becomes possible to discharge the turfgrass housed in.

Thus, the conventional grass collecting bucket device B '
Is a configuration in which, when the bucket body 45 is lifted, the bucket body 45 is rotated clockwise in a right side view and is tilted upward and upward of the machine body 44. Therefore, when the bucket main body 45 is in the raised position, the center of gravity of the machine body 44 in the front-rear direction largely moves backward, and the front side of the machine body 44 is lifted, resulting in an unstable state. In order to prevent this, a weight may be attached to the front side of the machine body 44, but this weight is
During work, not only does it not function at all, but also the aircraft 4
The total weight of 4 is increased, and the required power is unnecessarily increased. In FIG. 5, reference numerals 55 and 56 denote front wheels and rear wheels of the machine body 44, respectively.

[0006]

The first object of the present invention is to prevent the center of gravity of the entire machine body from moving largely backward when the bucket body is raised, and to stabilize the lawn grass in the bucket body. The second problem is to enable the discharge of turfgrass in any raised position.

[0007]

According to a first aspect of the invention for solving the above-mentioned problems, the bucket main body has a mast at the rear portion of the machine body via a pair of left and right first and second links on both side surfaces thereof. A grass collection bucket device configured to raise and lower the bucket body by an elevating cylinder in which a rod is connected to a pillar and a rod that is connected to the first link arranged below, the bucket body, when the bucket body is raised, The length of each of the first and second links and the connecting positions of both ends thereof are determined so that they can be rotated slightly counterclockwise when viewed from the right side and can be raised almost directly above. It has a feature.

According to the first aspect of the present invention, when the bucket body is raised, it makes a substantially circular motion while rotating slightly counterclockwise, and rises almost directly above the grass collecting position. Therefore, the center of gravity position of the entire machine body in the front-rear direction at the grass collecting position (downward end position) and the upward end position of the bucket body is substantially constant. Therefore, the work of raising the bucket body to the rising end and discharging the turfgrass contained therein can be stably performed.

The invention of claim 2 is based on the invention of claim 1, and is characterized in that the outlet of the bucket body is arranged at the bottom surface at the grass collecting position. With this configuration, in addition to the configuration in which the bucket body rises almost directly above the grass collection position when it rises, its outlet is provided on the bottom surface at the grass collection position, The turfgrass contained in the main body can be discharged at any position during the ascent.

The invention of claim 3 is the same as claim 1 or 2.
On the premise of the invention described above, the discharge port of the bucket body is covered with a lid that can be opened and closed by an opening and closing cylinder. With this configuration, it is possible to reliably discharge the turfgrass contained in the bucket body, and further surely discharge the turfgrass at an arbitrary position while the bucket body is being raised.

Further, the invention of claim 4 is based on the invention of any one of claims 1 to 3, wherein the mast strut is
It is characterized in that it is inclined slightly forward, and the position of the center of gravity of the bucket body in the front-back direction is moved slightly forward at the rising end. With this configuration, the stability of the entire machine body when discharging the turfgrass inside the bucket body at the rising end position of the bucket body is further enhanced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a right side view of a riding-type rotary mower M equipped with a grass collecting bucket device B according to the present invention in a lawn mowing state, and FIG. 2 is a view showing a bucket body 6 of the grass collecting bucket device B lifted to a rising end. FIG. 3 is a right side view showing a state in which the stored turf grasses are being discharged, and FIG. 3 is a right side view in a state in which the stored turf grasses are being discharged at an intermediate position while the bucket body 6 is being raised. Yes, Figure 4
FIG. 6 is a schematic plan view showing a state in which the bucket body 6 is connected to the pair of left and right mast columns 5 by a pair of left and right first and second links L ₁ and L ₂ .

1 to 4, between the front wheels 2 and the rear wheels 3 on the bottom surface of the four-wheel structure body 1 which is hydraulically driven, a plurality of (three in the embodiment) rotary mower portions Ma are provided. And a rectangular frame-shaped mast 4 is erected at a rear end portion of the machine body 1 in a posture inclined slightly forward, and a grass collecting bucket device B is attached to the mast 4. There is.

The grass collecting bucket device B includes the mast 4
The pair of left and right mast columns 5 that make up the
Also, the bucket body 6 is configured to be vertically movable via the _second links L ₁ and L ₂ . That is, one end of each of the first and second links L ₁ and L ₂ is connected to the upper ends of the pair of left and right mast columns 5 at predetermined intervals in the vertical direction via connecting pins 7 and 8, respectively. The other ends of the pair of left and right first links L ₁ arranged above are connected to the central portions of both side surfaces of the bucket body 6 via connecting pins 9, and the pair of left and right first links L ₁ are connected to each other. The 2-link L ₂ is connected to the lower edges of both side surfaces of the bucket body 6 at the grass collecting position, and also to a portion near the rear end via a connecting pin 11.

Then, as shown in FIG. 1, at the grass collecting position of the bucket body 6, the first and second links L ₁ and L ₂ are substantially parallel to each other. Therefore, the first link L ₁ arranged above is shorter than the second link L ₂ arranged below. Further, brackets 12 are respectively provided on the lower end portions of the pair of left and right mast columns 5 so as to project toward the front thereof, and the front ends of the brackets 12 and the mast columns of the second link L ₂ arranged below. The parts close to 5 are connected by a lifting cylinder S ₁ .

In addition, as shown in FIGS.
Second link L on the back of strike 4 ₂Almost the same as the connection part
The height of the mast 4 is bracketed over the entire width of the mast 4.
The rear surface of the bracket 30 when the bracket 30 is mounted horizontally.
A portion that is biased to one of the mast columns 5 on the front surface side of the plate portion 30a
A ventilation hole (not shown) with a circular cross section is installed in the front
The beam duct connector 13 is integrally attached, and
Mowing the front end of the connector 13 with each mower Ma.
The sucked and sucked turfgrass into the bucket body 6
The duct 14 for inserting is connected. Also, the bucket
The front plate portion 6a of the main body 6 is provided with a feeding hole 15.
And with the bucket body 6 placed in the grass collecting position,
The feed hole 15 is a vent hole of the duct connector 13.
It is possible to communicate. Also, the grass collecting position of the bucket body 6
In this case, the portion of the feeding hole 15 on the front surface is
The duct connector 13 can be brought into contact with the rear end surface of the duct connector 13 without leaving a gap.
The first link L arranged above₁Is the connecting pin 9
The turnbuckle 10 is connected to the end on the side of
The length is adjustable.

As shown in FIGS. 1 and 2, the bucket body 6 is provided with a discharge port 16 (see also FIGS. 3 and 4) at the bottom surface at the grass collecting position. The outlet 16 can be opened and closed by a lid 17. That is, in the lid body 17, one end of the substantially L-shaped front end link Lf and one end of the short rod-shaped rear end link Lb are connected to the front and rear ends in the closed posture, and the other ends thereof are The bucket body 6 at the grass collecting position is connected to the lower ends of both side surfaces of the bucket body 6 close to the bottom surface thereof, and further to the rear surface thereof so as to be vertically stacked. Further, a portion of the bucket body 6 at the grass collecting position on the both side surfaces, which is behind the connecting pin 9 and near the back surface thereof, and the bent portion of the front end link Lf are connected by the opening / closing cylinder S ₂ . Therefore, as shown by the solid line in FIG. 2, when the rod of the opening / closing cylinder S ₂ is projected, the lid 17 that closes the outlet 16 of the bucket body 6 becomes substantially parallel to the back surface of the bucket body 6. As described above, the discharge port 16 is opened by being rotated rearward.

Further, an exhaust portion 6b is provided on the back side of the bucket body 6, and the airflow sent together with the grass grass cut by the mower portion Ma is exhausted by the exhaust portion 6b.
It is configured to be discharged from the outside. In addition, in FIGS. 1 to 3, reference numerals 21 and 22 denote a steering wheel and a driver seat provided on the machine body 1.

Then, as shown in FIG. 1, with the bucket body 6 installed at the grass collecting position, the machine body 1 is run on the lawn surface, and a plurality of mower portions Ma attached to the lower part of the machine body 1 are run. When the lawn is mowed by, the mowed turfgrass is sucked by the suction airflow of the blower (not shown) mounted on the machine body 1, and then is discharged into the bucket body 6 through the duct 14 by the exhaust airflow. Pushed in and housed in this.

When the lawn mowing work is carried out as described above and the lawn grass cut into the bucket body 6 is filled with the grass,
It is necessary to raise the bucket body 6 by the lifting cylinder S ₁ to discharge the turfgrass inside.

As described above, the both side surfaces of the bucket body 6 and the pair of left and right mast pillars 5 are paired into the first pair of left and right.
And the connecting second on each link L _1, L _2, as shown in FIGS. 1 and 2, the bucket main body 6, at the time of its rising, while slightly rotated counterclockwise in the right side view ,
It makes an almost arcuate motion, and at its ascending end, it is located almost directly above the grass collection position. As a result, as shown in FIG. 2, after raising the bucket body 6 to the raised end position, the lid body 17 closing the discharge port 16 is rotated rearward with respect to the bucket body 6. , The discharge port 16 is opened to discharge the turfgrass inside, but for the above reason, the center of gravity position of the entire body 1 along the front-rear direction hardly changes (in the embodiment, the mast 4 is When the bucket body 6 reaches the ascending end position, the center of gravity of the entire machine body 1 rather moves slightly forward because it is slightly inclined forward. Therefore, in a stable state, The discharge work of the turfgrass housed in the main body 6 can be performed.

Further, since the outlet 16 of the bucket body 6 is provided at the bottom surface portion at the grass collecting position, as shown in FIG. When stopped, the discharge port 16 is opened and the turfgrass inside can be discharged. In the example of FIG.
The turfgrass G in the bucket body 6 is dropped and stored in the collection box 32 mounted on the dolly 31. When the bucket body 6 is raised from the grass collection position (falling end position) toward the rising end position, the bucket body 6 rises while rotating slightly in the counterclockwise direction. By always facing obliquely backward, the turfgrass G in the bucket body 6 is reliably discharged.

In the above embodiment, the present invention is applied to a riding type rotary mower.
It can also be implemented for the "lawn surface cleaner" described in the item. That is, the present invention can be applied to any machine configured to suck and collect mowed turfgrass or turfgrass scattered on the lawn surface or the ground surface.

[0024]

According to the present invention, when the bucket body is raised, it makes a substantially circular motion while slightly rotating in the counterclockwise direction and rises almost directly above the grass collecting position. , The grass center position of the bucket body (lower end position), and the center of gravity of the entire machine body in the front-rear direction at the upper end position are:
Since it is almost constant, the work of raising the bucket body to the rising end and discharging the turfgrass contained therein can be stably performed.

Further, since the outlet of the bucket body constituting the grass collecting bucket device is provided at the bottom surface of the bucket body at the grass collecting position, the discharge of the turfgrass contained in the bucket body is in the middle of its rising. It can be done at any position.

[Brief description of drawings]

FIG. 1 is a right side view of a riding-type rotary mower M provided with a grass collecting bucket device B according to the present invention in a lawn mowing state.

FIG. 2 is a right side view of a state in which the bucket main body 6 of the grass collecting bucket device B is lifted to a rising end to discharge the stored turfgrass.

FIG. 3 is a right side view showing a state in which the housed turfgrass is being discharged at an intermediate position where the bucket body 6 is being lifted.

FIG. 4 is a schematic plan view showing a state in which a bucket body 6 is connected to a pair of left and right mast columns 5 by a pair of first and second links L ₁ and L ₂ .

FIG. 5 is a right side view of a lawn surface cleaner equipped with a conventional grass collecting bucket device B ′.

[Explanation of symbols]

B: Grass collecting bucket device G: Turf grass L ₁ : First link L ₂ : Second link S ₁ : Lifting cylinder S ₂ : Opening / closing cylinder 4: Mast 5: Mast support column 6: Bucket body 16: Discharge port 17: Lid body

Claims (4)

[Claims] 1. The bucket body is connected to a mast support column at the rear of the machine body through left and right pairs of first and second links on both side surfaces of the bucket body, and the first body is arranged below.
A grass collecting bucket device configured to lift and lower the bucket body by an elevating cylinder having a rod connected to a link, wherein the bucket body rotates slightly counterclockwise in right side view when the bucket body is raised. The length of each of the first and second links and the connecting positions of both ends thereof are set so that the grass collecting bucket device can be lifted almost directly above. 2. The grass collection bucket device according to claim 1, wherein the outlet of the bucket body is arranged at the bottom surface of the grass collection position at the grass collection position. 3. The grass collection bucket device according to claim 1, wherein the outlet of the bucket body is covered with a lid that can be opened and closed by an opening / closing cylinder. 4. The mast strut is inclined slightly forward, and the position of the center of gravity of the bucket body in the front-rear direction is configured to move slightly forward at the rising end. The grass collection bucket device according to any one of claims 1 to 3.