JP2006055117A - Grass cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grass cutter for recovering cut grass supplied by transporting air flow through a transfer duct 10 to a grass collection vessel 30 while preventing the formation of a useless space unable to be packed with the cut grass in the grass collection vessel 30. <P>SOLUTION: A cut grass supplying guide 42 communicated to the transfer duct 10 through a bent guide 43 and directed lateral to the traveling body is placed in an upper lid 31 of the grass collection vessel 30. The cut grass supplying guide 42 guides the cut grass supplied from the bent guide 43 along the lateral direction of the traveling body by an upper guide wall 48 and a rear guide wall 46 and scatters the grass into the grass collection vessel from a downward discharging port 45 and a lateral discharging port 44. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is provided with a conveying duct for the front and rear of the traveling machine body, which is provided with a grass collecting container at the rear portion of the traveling machine body and supplies cut grass to the grass collecting container from the front side of the traveling machine body by the conveying wind from the grass collecting container. It relates to mowers.

  In the grass mower, when the structure in which the transport duct communicates so as to supply the cut grass to the grass collection container by opening the discharge port of the transport duct to the front side wall of the grass collection container, In the vicinity of the discharge port of the transport duct, a large amount of cut grass accumulates ahead of other parts, making it difficult for the cut grass to uniformly enter the entire grass collection container. In particular, when the size of the grass container is increased in the lateral direction of the traveling machine body, the feeding duct is connected to one end side of the grass container in the lateral direction of the traveling machine body, so that the occurrence of supply failure is remarkable. is there.

  Conventionally, for example, as shown in Patent Document 1, the upper discharge tube 26 protrudes in the lateral width direction along the front wall 25 of the collector box 19 from the right side wall 24 of the collector box 19 (corresponding to a grass collection container). In some cases, the rear portion of the upper discharge tube 26 is cut out inside the collector box 19 to form a discharge guide portion 27 so that the cut grass is dispersed in the collector box 19.

Japanese Patent Laid-Open No. 2-145119 (page 3, FIGS. 1 and 2)

  When the above-mentioned conventional technique is employed to distribute the cut grass, even if the cut grass from the front / rear facing portion of the upper discharge tube 26 receives the direction change guidance by the bent portion of the upper discharge tube 26, the discharge guide portion 27. It is easy to generate cut grass that does not receive the guide action and scatters diagonally from the bent part to the rear of the machine body, and is opposite to the one where the bent part of the discharge tube is located at both ends of the grass container in the lateral direction of the machine body At the side edge of the side, it was easy to generate useless empty space where cut grass was not easily clogged.

  An object of the present invention is to provide a mower capable of collecting cut grass in a state where a wasteful empty space is unlikely to be generated in a grass collection container.

In the first aspect of the present invention, a grass collecting container is provided at the rear of the traveling machine body, and the cutting grass is supplied from the front side of the traveling machine body to the collecting container from the front side of the traveling machine body by the conveying wind. In a mower with a transport duct,
A cutting body supply guide for the horizontal direction of the traveling machine body that communicates with the conveying duct via a bending guide that guides the cutting grass from the conveyance duct so that it flows in the direction of the horizontal direction of the traveling machine body. The cut grass supply guide is positioned above the traveling machine body lateral axis of the cut grass supply guide on the traveling machine body upper side, and the cut grass supply guide is positioned on the rear side of the traveling machine body from the traveling machine body lateral axis. A rear guide wall, a lateral discharge port that opens laterally at the end of the cut grass supply guide that is opposite to the side connected to the bent guide, and a downward discharge port that opens downward at the travel unit, The grass cut from the bent guide is guided by the upper guide wall and the rear guide wall so as to flow in the lateral direction of the traveling machine body, and the grass collecting container is provided from the downward discharge port and the horizontal discharge port. It is constructed so as to fall.

  That is, the cut grass after flowing from the conveyance duct to the bending guide and receiving the flow guide by the bending guide is surely laterally received by the cutting guide by the upper guide wall and the rear guide wall of the cutting grass supply guide. Change the direction and flow and scatter laterally from the lateral outlet, or scatter downward from the downward outlet, and the side where the bending guide is located at both ends of the grass container in the lateral direction of the traveling machine Scatters more toward the opposite side edge. As a result, of the both ends of the grass collecting container in the lateral direction of the traveling machine body, the cut end is filled with the cut grass first on the side opposite to the side where the bending guide is located, and this accumulated cut grass becomes a wall. The cut grass can be collected while the cut grass from the bending guide falls and fills the other lateral end.

  Therefore, according to the first aspect of the present invention, the cut grass from the bent guide is moved forward from the lateral end on the side opposite to the side where the bent guide is located for flow guidance by the upper guide wall and the rear guide wall of the cut grass supply guide. The cut grass is collected in such a way that it is difficult to create a wasteful empty space where the cut grass is not clogged on either side in the lateral direction of the traveling machine body of the grass collection container. It is possible to work efficiently by reducing the number of times the operation is interrupted in order to discharge the wastewater or to replace the full grass collection container.

  In the second aspect of the invention, in the configuration of the first aspect of the invention, the cut grass supply guide is provided with a forward discharge opening that opens forward of the traveling machine body.

  That is, the cut grass that flows in the lateral direction of the traveling machine in response to the flow guide by the upper guide wall and the rear guide wall of the supply guide is scattered from the lateral discharge port or from the downward discharge port to the downward direction, The cut grass can be collected while splashing forward from the forward discharge port and being dispersed and dropped in the longitudinal direction of the traveling machine with respect to the inside of the grass collection container.

  Therefore, according to the second invention, the cut grass is dispersed on the front side of the collecting container for the forward discharge port, and it is difficult to make a useless empty space where the cutting grass is not clogged on the front end side of the collecting container, Efficient work can be done by efficiently filling the grass collection container with cut grass.

  According to the third aspect of the present invention, in the configuration of the second aspect of the present invention, the discharge adjusting means for changing the opening amount of the forward discharge port is provided.

  That is, when the opening adjustment amount of the forward discharge port is adjusted to the decreasing side by the discharge adjusting means, the opening area by the downward discharge port and the forward discharge port of the cut grass supply guide is reduced, and the cut grass is guided by the cut grass supply guide. While adjusting the discharge rate of the cut grass supply guide so that the distance transported by the transfer wind is longer, even if the cut grass is relatively heavy, the cut grass should be sure to reach the side edge of the collection container. It can be collected while being scattered. When the forward outlet is adjusted to the increasing side, the opening area of the lower and forward outlets of the cut grass supply guide is increased and the cut condition of the cut grass supply guide is adjusted so that cut grass clogging is less likely to occur. Even if the volume of cut grass to be conveyed is large, the cut grass can be recovered while being hard to clog the cut grass supply guide.

  Therefore, according to the third aspect of the present invention, even if the moistness of the cut grass or the conveyance volume changes, the discharge adjusting means adjusts the discharge state of the cut grass supply guide to an appropriate state to supply the grass collection container. It is possible to efficiently collect so that the leak space is not easily formed, or to collect the cut grass supply guide while preventing clogging.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a pair of left and right caster-shaped front wheels 1, a pair of left and right driveable rear wheels 2, and an engine 3 provided at the rear of the vehicle body. A traveling vehicle body equipped with a driving part equipped with a boarding type driving part equipped with a driving seat 4 located near the front side of the driving part, and a fall protection frame 5 located near the rear side of the driving seat 4 The mowing device 20 is connected between the front and rear wheels of the frame 6 via the link mechanism 7, and the driving force of the engine 3 is transmitted to the mowing device 20 via the transmission case 8 and the rotating shaft 9. A grass collecting container 30 is provided at the rear part of the traveling machine body, and the traveling is made of a resin-made flexible tube having one end connected to a discharge cylinder 22a of a blower 22 provided at a lateral end of the cutting blade housing 21 of the mowing device 20. Front and rear of the aircraft The other end side of the mushroom transport duct 10 is communicated with the lateral one end side of the upper lid portion 31 of the grass collection container 30 to constitute a riding type mower.

  That is, when the lift cylinder 11 interlocked with the rear link 7a of the link mechanism 7 is expanded and contracted, the lift cylinder 11 swings and lifts the link mechanism 7 with respect to the body frame 6 to bring the mowing device 20 into the ground gauge. The ascending / descending operation is performed between a descending work state in which the wheel 23 is grounded and a non-working state in which the ground gauge wheel 23 is lifted from the ground. When the traveling machine body is caused to travel with the mowing apparatus 20 in the descending state, the mowing apparatus 20 is driven to rotate around the axis of the self-propelled machine body in the vertical direction at a plurality of locations in the cutting blade housing 21 in the lateral direction of the traveling machine body. The turf and grass are cut by the rotary cutting blade 24. Grass and grass (hereinafter referred to as cut grass) cut by each rotary cutting blade 24 are conveyed from the cutting blade housing 21 by the wind generated by the rotation of each rotary cutting blade 24 and the conveying wind generated by the blower 22. The grass collecting container 30 is supplied to the grass collecting container 30 through the duct 10, and the grass collecting container 30 collects the cut grass from the mowing apparatus 20 by the pair of right and left grass collecting bags 32.

  The grass collection container 30 will be described in more detail. As shown in FIGS. 3 and 4, the grass collection container 30 is connected to the rear portion of the body frame 6 and the fall protection frame 5 on both sides of the self-propelled aircraft. The container support frame 33 connected to the support column 12 is also used as a hood cover that covers the grass bag 32 that is suspended and supported at both ends in the lateral direction of the self-propelled machine body and the engine hood 13 of the prime mover. A central bottom plate 34 formed between the grass collection bags of the container support frame 33 and the box-shaped resin upper lid portion 31 covering the center bottom plate 34 and the pair of left and right grass collection bags 32 is formed. And is configured.

As shown in FIG. 6 (b) and the like, one end side in the lateral direction of the traveling machine body in the upper lid portion 31 in the grass collecting container 30 is substantially along the longitudinal direction of the traveling machine body, and the other end side is along the lateral direction of the traveling machine body. A bent cylinder 40 formed in a bent state is provided. The bent cylinder 40 is fixed to the upper lid portion 31 by bolting the flange 41 positioned on the front end side of the bent cylinder body 40 to the front wall portion 31a of the upper lid portion 31. As shown in FIGS. 3, 5, and 6, the cut grass that is positioned in the lateral orientation of the traveling machine body inside the upper lid portion 31 of the grass collection container 30 by the portion of the bent tube body 40 that extends along the lateral direction of the traveling machine body. A supply guide 42 is formed, and a bent guide 43 is formed by a bent portion at an intermediate portion of the bent cylindrical body 40. The conveying duct 10 is connected to a portion protruding from the front wall portion 31a of the upper lid portion 31 of the bent cylindrical body 40 toward the front side of the traveling machine body.
Accordingly, the cut grass supply guide 42 communicates with the transport duct 10 via the bending guide 43.

At the end of the cut grass supply guide 42 opposite to the side connected to the bent guide 43, a sideways discharge port 44 formed of a lateral opening of the traveling machine body of the bent tube body 40 constituting the cut grass supply guide 42 is provided, A downward discharge port 45 directed downward from the traveling machine body is provided below the cut grass supply guide 42.
The downward discharge port 45 of the cut grass supply guide 42 is formed by providing a notch in a lower part of a portion of the bent cylinder 40 that constitutes the cut grass supply guide 42. As a result, a portion of the peripheral wall of the bent cylindrical body 40 that constitutes the cut grass supply guide 42 that is located on the rear side of the traveling machine body side axis 42a of the cut grass supply guide 42 is the cut grass. Supply of cut grass in the peripheral wall of the portion of the bent cylindrical body 40 that constitutes the cut grass supply guide 42, which is the rear guide wall 46 located on the rear side of the travel aircraft body with respect to the traveling machine body lateral axis 42 a of the supply guide 42. A portion of the guide 42 positioned on the front side of the traveling machine body side of the traveling machine body lateral axis 42a becomes a front guide wall 47 positioned on the front side of the traveling machine body side axis 42a of the cut grass supply guide 42 and bent. Of the peripheral wall of the portion constituting the cut grass supply guide 42 of the tubular body 40, the portion of the cut grass supply guide 42 that is located above the travel machine body lateral axis 42 a is above the travel machine body. It has on the guide wall 48 located on the traveling machine body upper side of the vehicle body lateral axis 42a of the guide 42.

Thereby, the grass collection container 30 collects the cut grass that the transport duct 10 supplies with the transport air from the blower 22 as follows.
That is, the cut grass supplied by the transport duct 10 is introduced into the bending guide 43 via the traveling body front-rear direction portion of the bending cylinder 40 and the traveling body side direction is changed by the flow guide of the bending guide 43 to flow. Further, the cut grass from the bent guide 43 is caused to flow further laterally by the flow guide by the upper guide wall 48, the front guide wall 47, and the rear guide wall 46 of the cut grass supply guide 42, and is directed downward from the downward discharge port 45. The left and right sides of the pair of left and right grass collection bags 32 are scattered to the side of the grass collection bag 32 located on the side opposite to the side on which the bending guide 43 is located. It collects in a pair of grass collection bags 32 and the upper lid part 31. Accordingly, the pair of left and right grass collecting bags 32 and the upper lid portion 31 in the lateral direction of the traveling machine body, the grass collecting bag 32 located on the opposite side to the side where the bending guide 43 is located, and the bending guide in the upper lid portion. When a large amount of cut grass first falls on the side of the side opposite to the side where 43 is located, and this grass collection bag 32 becomes full, the grass that has accumulated in the upper lid portion 31 on the grass collection bag 32 is accumulated. So that the cut grass falls from the cut grass supply guide 42 onto the central bottom plate 34 or the other grass collection bag 32, and the other grass collection bag 32 or the upper lid 31 is filled. Collect cut grass.

  As shown in FIG. 4, both ends of the container support frame 33 have bag hanging portions 32a and 32c made of pipe material or sheet metal material facing the traveling machine body, and bag hanging parts made of pipe material facing the self-running machine body. 32b is provided, and a rectangular loop-shaped base 35 attached to a cutting grass insertion / removal port of the grass collection bag 32 is detachably locked to the back hanging portions 32a to 32c, whereby the grass collection bag 32 is detachable. Suspended to support.

  As shown in FIGS. 4 and 5 (a), the extending end side of the pair of left and right mounting arms 36 extending from the end portion of the upper lid portion 31 on the front side of the traveling body is connected to the upper end portion of the column 12 on the lateral axis of the traveling body. Since the upper lid portion 31 is pivotably connected around the core P, the upper lid portion 31 is connected to the container support frame 33 so as to be swingable up and down around the axis P, and up and down around the axis P. Can be swingably opened and closed. That is, by operating the upper lid portion 31 in the ascending open state, the upper lid portion 31 opens upward to allow the grass bag 32 to be attached and detached. By operating the upper lid portion 31 in the lowered and closed state, the upper lid portion 31 comes into contact with the container support frame 33 and presses and fixes the grass collection bag 32 to the container support frame 33.

  FIG. 6 shows a cut grass supply guide 42 provided with another embodiment. In the cut grass supply guide 42, the cut grass supply guide 42 is located on the rear side of the traveling machine body with respect to the traveling machine body lateral axis 42a. A rear guide wall 46 and an upper guide wall 48 positioned above the traveling machine body lateral axis 42a of the cut grass supply guide 42, and a lower part of a cylindrical part constituting the cut grass supply guide 42 Are provided with a downward discharge port 45 directed downward of the traveling vehicle body and a forward discharge port 49 directed forward of the traveling vehicle body.

  The cut grass supply guide 42 is provided with a discharge adjusting plate 50. Due to the guide action of the attachment long hole 51 of the discharge adjustment plate 50 and the attachment bolt 52 passing through the attachment long hole 51, the discharge adjustment plate 50 is against the cylinder constituting the cut grass supply guide 42. It is possible to adjust sliding along the peripheral wall of the cylindrical body. When the discharge adjustment plate 50 is slidably adjusted, the discharge adjustment plate 50 covers the forward opening 49 of the cut grass supply guide 42 or releases the cover to reduce the opening amount of the forward opening 49 on the decrease side or the increase side. Change to adjust.

  As a result, the cut grass supply guide 42 receives the flow guide from the upper guide wall 48 and the rear guide wall 46 as the cut grass from the bending guide 43 changes its direction to the side of the traveling machine and flows to the side from the side discharge port 44. Then, the cut grass is scattered and guided so as to be scattered downward from the downward discharge port 45 and forward from the forward discharge port 49. As a result, the cut grass from the transport duct 10 scatters a lot in the grass collection bag 30 on the opposite side of the pair of left and right grass collection bags 30 from the side where the bending guide 43 is located, and the forward discharge port. From 49, it also scatters forward and is dispersed and dropped in the grass bag 30 in the longitudinal direction of the traveling machine.

  Further, as shown in FIG. 7 (a), when the cut grass is relatively heavy, such as moist, the discharge adjusting plate 50 is operated to the closed side to adjust the opening amount of the forward discharge port 49 to the decreasing side. Then, the opening area by the downward discharge port 45 and the forward discharge port 49 of the cut grass supply guide 42 is reduced, and the distance that the cut grass is conveyed by the transfer wind while being guided by the cut grass supply guide 42 is increased. The cutting condition of the cut grass supply guide 42 can be adjusted. As a result, even if the cut grass is heavy, it is collected while ensuring that the grass collecting bag on the side opposite to the side where the bending guide 43 is located is surely scattered. Can do.

  As shown in FIG. 7 (b), when the volume of cut grass supplied by the conveying duct 10 is large, the discharge adjusting plate 50 is operated to the opening side to adjust the forward discharge port 49 to the increasing side. Then, the discharge area of the cut grass supply guide 45 can be adjusted so that the open area of the downward discharge port 45 and the forward discharge port 49 of the cut grass supply guide 42 becomes large and cut grass clogging is less likely to occur. As a result, it is possible to collect the cut grass while preventing the cut grass supply guide 42 from clogging even with a large volume.

[Another embodiment]
In addition to the configuration in which the opening amount of the forward discharge port 49 is changed and adjusted by sliding the discharge adjustment plate 50 as in the above-described embodiment, a plurality of types of detachable cuttings with different sizes of the forward discharge port 49 are possible. A grass supply guide is prepared, and an opening amount of the forward discharge port 49 is adjusted by selecting and mounting a cut grass supply guide having a forward discharge port 49 having a size suitable for the nature of the cut grass. It may be configured and implemented. In addition, a plurality of detachable lids having different sizes of lid portions for closing and acting on the forward discharge port 49 of the cut grass supply guide 42 fixed to the grass collection container are prepared and suitable for the properties of the cut grass. The opening amount of the forward discharge port 42 may be adjusted by selecting a lid body having a lid portion of a predetermined size and mounting the lid body on the cut grass supply guide 42. In any case, the object of the present invention can be achieved, and these slidable discharge control plates 50, detachable cut grass supply guides having different sizes of the forward discharge ports, and the lid portions have different sizes. The removable lid is generally referred to as the discharge adjusting means 50.

Side view of the entire mower Top view of the entire mower Rear view of grass collection container Perspective view of container support frame (B) is a side view of the cut grass supply guide arrangement part of the grass collection container, (b) is a perspective view of the cut grass supply guide Perspective view of cut grass supply guide with another embodiment (B) is a cross-sectional view of the cut grass supply guide in the discharge port decrease adjustment state, (b) is a cross-sectional view of the cut grass supply guide in the discharge port increase adjustment state

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Conveyance duct 30 Grass collection container 42 Cut grass supply guide 42a Shaft supply guide shaft 43 Bend guide 44 Side discharge port 45 Down discharge port 46 Rear guide wall 48 Upper guide wall 49 Forward discharge port 50 Discharge adjustment means

Claims (3)

A mowing machine provided with a transport duct facing the front and rear of the traveling machine body, which is provided with a grass collection container at the rear part of the traveling machine body and supplies cut grass to the grass collection container from the front side of the traveling machine body by the conveying wind. ,
A cutting body supply guide for the horizontal direction of the traveling machine body that communicates with the conveying duct via a bending guide that guides the cutting grass from the conveyance duct so that it flows in the direction of the horizontal direction of the traveling machine body. Provided,
The cut grass supply guide includes an upper guide wall located on the upper side of the traveling machine body from the horizontal axis of the cutting machine supply guide and a rear side of the cutting grass supply guide positioned on the rear side of the running machine body from the horizontal axis of the cutting machine supply guide. The bending guide includes a guide wall, a lateral discharge opening that opens laterally on the traveling machine body at an end opposite to a side connected to the bending guide of the cut grass supply guide, and a downward discharge opening that opens downward on the traveling machine body. A mowing machine configured to guide the mowing grass from the upper guide wall and the rear guide wall so as to flow in the lateral direction of the traveling machine body and to drop the grass from the downward discharge port and the horizontal discharge port into the grass collection container.   The mowing machine according to claim 1, wherein the mowing supply guide includes a forward discharge opening that opens forward of the traveling machine body. The mowing machine according to claim 2, further comprising discharge adjusting means for changing an opening amount of the forward discharge port.

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