JPS6119619Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a grass clippings discharging device for a mower, which allows grass clippings to be discharged to the outside in a good manner, and
The purpose is to prevent foreign objects such as stones from scattering to the outside, and to reinforce the side part of the front end of the mower body on the side of the grass cuttings discharge port.

Conventionally, in a mid-mount mower, a plurality of cutters are arranged in parallel in the lateral direction within the mower body, and a grass clippings discharge port that opens laterally is provided on one lateral side of the mower body. Conventionally, in such mowers, two contradictory tasks have been simultaneously achieved: ensuring that grass clippings are properly discharged to the outside, and preventing foreign objects such as stones from being scattered outside. However, the reality is that no mower has yet been proposed that achieves both of the above objectives at the same time.

The present invention was devised in view of the above-mentioned circumstances, and its characteristics include a cutter provided in the mower body having front and rear walls, and a cutter provided in the mower body having a side opening on one side in the lateral direction. Provide a grass clippings outlet,
In a mower that supports a gauge member on the side of the front end of the mower body on the side of the discharge port, the upper and lower edges of the front and rear walls of the mower body on the side of the discharge port protrude above and below the cutter, respectively, so that the cutter is on the side. A gap is formed between the regulating member and the top wall of the mower body through which the grass clippings pass, and the inner surface of the regulating member is connected to the outer side toward the upper end. It is located at a sloped point that transitions to .

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a tractor body, and a hydraulic system 2 for lifting and lowering a working machine is mounted at the rear of the vehicle body 1. 34 is a front wheel, and 35 is a rear wheel. Reference numeral 3 denotes a rotary mid-mount mower, which is suspended from the lower abdomen of the vehicle body 1 via a parallel link type attachment device 4 so that it can be lowered freely. It is said that it is possible to go up and down.

As shown in FIGS. 2 to 6, the mower 3 includes a mower body 6 that is in the form of an inverted gutter and has an arrowhead shape in plan view, and this mower body 6 has front and rear walls 15, 16 and a top wall 17. The top wall 17 is formed in a stepped shape consisting of a front top wall 17a and a rear top wall 17b which is one step lower than the front top wall 17a, so that the front portion 6a of the mower body 6 is one step higher than the rear portion 6b. . At the rear part 6b of the mower body 6, a cutter shaft 7 in the vertical direction is attached to the rear part 6b in the horizontal direction.
The cutters 8 are arranged side by side, and a cutter 8 located inside the mower main body 6 is fixed to the lower end of each cutter shaft 7. Each cutter shaft 7 is interlocked and connected by a winding transmission mechanism 9, and the transmission mechanism 9 is covered with a cover 10. A transmission box 11 is fixedly installed in the lateral center of the cover 10, and the box 11 is provided with an input shaft 12 that interlocks with the central cutter shaft 7. The input shaft 12 is interlocked and connected to the rear power extraction device 13 of the tractor via the transmission shaft 14, so that each cutter 8 is rotationally driven in the clockwise direction in plan view. The inside of the front portion 6a of the mower body 6 is connected to the front wall 15 of the mower body 6.
A grass clippings discharge passage 18 is surrounded by a rear wall 36 at the boundary between the front part 6a and the rear part 6b of the mower body 6, and the front top wall 17a of the mower body 6 and is shaped like an arrowhead in plan view. Within the discharge passage 18, the grass clippings are sent only in one direction, to the right, and the left end side of the discharge passage 18 and the left end side opening of the rear part 6b of the mower body 6 are covered with a cover 19.
It is blocked by. Further, the right end side of the discharge passage 18 is a grass clippings discharge port 20 that opens laterally. In the right half of the discharge passage 18, the height of the top wall 17a is gradually increased toward the discharge port 20.
Further, in the discharge passage 8, the rear wall 36 is gradually spaced apart from the front wall 15 in the vicinity of the right cutter shaft 7 toward the discharge port 20 as it moves toward the discharge port 20. Reference numeral 21 denotes a back plate that covers the rear side of the cutter 8 over the entire length of the mower body 6 in the lateral direction, and is installed below from the top wall 17b at the rear part 6b of the mower body 6, and covers the rear side of each cutter 8. Each is formed into an arc shape in plan view. Note that the right end portion of the back plate 21 is vertically continuous with the rear wall 36 of the discharge passage 18. Reference numeral 22 denotes a discharge cover that guides grass clippings laterally from the discharge port 20, and is located at the front part 6a of the mower body 6.
The discharge cover 22 is vertically swingably supported by a hinge 23 at the right end of the mower body 6, and the discharge cover 22 is stretched laterally with its outer end slightly lowered from the mower main body 6 as shown by the solid line in FIGS. 2 and 6. The position can be freely changed between a lowered position where the mower is extended and a raised position where the mower body 6 is raised toward the side of the mower body 6 shown by the imaginary line in both figures. Release cover 22
is composed of front and rear walls 24 and 25. 27
is a coiled bullet for unstablely switching the discharge cover 22 to various positions, and is stretched between the discharge cover 22 and a bracket 28 erected on the right side of the mower body 6. In addition, when the discharge cover 22 is in the raised position, it comes into contact with a stopper 29 fixed to the front part 6a of the mower main body 6. A pair of left and right gauge members 30, exemplified by caster-type wheels, are provided at the front positions on both sides of the mower body 6.
However, rear gauge members 31, which are exemplified as wheel bodies, are disposed at the rear of the lateral center of the mower body 6 so as to be movable and adjustable in the vertical direction, so that the mowing height of the cutter 8 can be adjusted. ing. The front gauge member 30 is provided on a support tube 37 so as to be vertically movable and adjustable, and a bracket 38 is fixed to the support tube 37 so as to project rearward. The bracket 38 has an L-shaped attachment part 39 at the rear, and the attachment part 39 is detachably attached to the front wall 15 and the front top wall 17a on both sides of the front end of the mower body 6 by means of fixtures 40. ing. Further, the rear gauge member 31 is supported by the rear wall 16 of the mower body 6 via its pair of brackets 41 and the like. Further, in order to prevent the mower 31 itself from directly touching the ground, a front limit gauge member 32, exemplified by a wheel, is provided at the front of the center of the mower body 6, and at the rear of both sides of the mower body 6. , a pair of left and right rear limit gauge members 33 exemplified by wheels are respectively provided, and the front limit gauge member 32 is supported at the lateral center of the front wall 15 of the mower body 6 via a pair of brackets 42.
On the other hand, the rear limit regulating member 33 is detachably supported on both sides of the rear wall 16 of the mower main body 6 via a U-shaped bracket 43. Reference numeral 44 denotes a reinforcing and regulating member in the form of a plate, which is installed horizontally in the front-rear direction on the right side of the mower body 6, and is attached to the back plate 21.
The intersection with the mower main body 6 is fitted into the lower part of the back plate 21, and the lower part of the front gauge member support location on the front wall 16 of the mower body 6 and the rear limit gauge member support location on the rear wall 16 of the mower body 6. The parts are connected on the lateral side of the right cutter 8. The upper and lower edges of the regulating member 44 protrude above and below the cutter 8, respectively, and the regulating member 44 covers the right cutter 8 on the side, and also covers the regulating member 44 and the mower body 6.
A gap is formed between the front ceiling walls 17a for the grass clippings to pass through. The regulating member 44 is inclined in the front-rear direction so that the rear side is located on the outer side than the front side, and the regulating member 44 is inclined outward toward the upper end. There is.

According to the embodiment configured as described above, when performing reaping work, the release cover 22 is
The tractor is set to the lowered position shown by the solid line in the figure, and the tractor is driven while rotating the cutter 8. Then, the grass, grass, etc. is cut by the cutter 8, and the cut grass is sent to the discharge passage 18 side.
Since the grass is covered by cutter 8, the cut grass is covered by cutter 8.
It is well sent to the discharge passage 18 side without escaping to the rear side.

Then, the grass clippings sent to the discharge passage 18 side are sent to the right inside thereof and reach the discharge port 20. At this time, the right side of the back plate 21 is connected to the rear wall 36 of the discharge passage 18. Since it is vertically continuous, the grass clippings sent to the right in the discharge passage 18 are sent to the discharge port 20 side at the right side of the discharge passage 18 without escaping to the rear side. By the way, in the above case, in the right side of the mower main body 6 which is the discharge port side, the regulating member 44 is on the side of the cutter 8 and has an inclined shape that moves outward as it goes towards the upper end. The grass clippings sent to the discharge port side are set at a discharge angle upward from the horizontal by the regulating member 44 and are discharged from the discharge port 20 to the side of the mower body 6. Therefore, of course, when the amount of grass clippings is small, Even if the amount of grass clippings is large due to mowing in a place where grass, turf, etc. grows densely, the grass clippings are smoothly discharged to the side of the mower body 6 at an angle upward from the horizontal, and the grass clippings are discharged through the discharge passage 18. There is no possibility that the discharge port will become clogged due to falling filling. In particular, in the embodiment, the height of the right half of the discharge passage 18 is gradually increased toward the discharge port 20, and the rear wall 36 of the right half of the discharge passage 18 on the discharge port side is moved closer to the discharge port 20 from the vicinity of the right cutter shaft 7. Front wall 15 towards the other side
Since the grass clippings are gradually spaced apart from each other, whether the amount of grass clippings is small or large, the grass clippings are sent very smoothly to the right in the discharge passage 18 and are sent from the discharge port 20 to the side of the mower body 6. is released.

Further, in the above case, even if there is a foreign object such as a stone on the work ground and the cutter 8 blows this foreign object toward the discharge port side, the thrown foreign object is removed from the regulating member 44.
Since the foreign matter collides with the mower body 6 and its flying energy is reduced, the foreign matter is not scattered to the side of the mower main body 6, and safety is ensured. The cut grass discharged from the side of the mower body 6 is further guided and discharged laterally by the discharge cover 22 to form a row of collected grass. Since the discharge cover 22 is pivotally supported for vertical swinging and is elastically pulled downward by the bullet 27, the discharge cover 22 is maintained in the lowered position by the bullet 27 when the amount of grass clippings is small. In addition, if there is a large amount of grass clippings, please use the release cover 2.
2 is lifted up by the grass clippings against the elastic force of the bullet 27, and as a result, even when there is a large amount of grass clippings, the grass clippings are smoothly guided to the side without filling the lower side of the discharge cover 22 and clogging it. is released,
Grass collection rows are reliably and uniformly formed.

As mentioned above, whether the amount of grass clippings is small or large, the grass clippings are smoothly sent to the right through the discharge passage 18 and are discharged from the discharge port 20 to the side of the mower body 6. The grass clippings are smoothly guided and released laterally by the discharge cover 22, and a grass collection row is reliably and uniformly formed.In this way, the discharge passage 18 and the lower side of the discharge cover 22 are filled with grass clippings. Since the grass does not become clogged, grass cutting work can be carried out well at all times, and uneven cutting does not occur and horsepower consumption does not increase. By the way, when an obstacle such as a stone on the work ground collides with the right side gauge member 30 during the grass cutting work, or when an obstacle collides with the right side of the front end of the mower body 6, the right side In this case, the right side of the front wall 15 of the mower body 6 and the rear wall 16 of the mower body 6 are connected by the regulating member 44, and the right side of the front end of the mower body 6 is Since the sides are reinforced, there is no risk that the right side will be deformed by the impact. In addition, since the back plate 21 that covers the rear side of the cutter 8 extends over the entire length of the mower body 6 in the lateral direction, the worker's feet may come into contact with the cutter 8 from the rear side when the cutter 8 is driven to rotate. There is no fear and it is highly safe.

Incidentally, when the mower 3 is being transported, the width of the discharge cover 22 can be reduced by unstablely switching it to the raised position shown by the imaginary line in FIGS. 2 and 6.

Although the regulating member is plate-shaped in the embodiment, the regulating member may be a hollow or solid member having a triangular cross section or a trapezoidal cross section, and the inner surface of the regulating member may be moved outward toward the upper end. It is also possible to have an inclined shape. In addition, in the embodiment, the gauge member supported at the side of the front end of the mower body on the grass clippings outlet side is used to adjust the cutting height, but the gauge member is used to prevent the mower body itself from touching the ground. Alternatively, the gauge member may be a sled or something else.

Furthermore, in the example, the height of the right half of the discharge passage was gradually increased toward the discharge outlet, but since the amount of grass clippings is the largest in the discharge passage side, the height of the right half of the discharge passage was The height may be gradually increased toward the discharge port. Further, although the present invention is applied to a mid-mount mower in the embodiment, the present invention can also be applied to other types of mowers.

As described in detail above, the present invention provides reinforcement and regulation in which the upper and lower edges of the front and rear walls of the mower body on the outlet side side protrude above and below the cutter, respectively, and cover the cutter on the lateral side. A gap is formed between the regulating member and the top wall of the mower body through which grass clippings pass, and the inner surface of the regulating member is sloped outward toward the upper end. Therefore, whether the amount of grass clippings is small or large, the grass clippings are smoothly discharged from the discharge port to the side of the mower body at an angle upward from horizontal. Since the side of the discharge outlet is not clogged with falling grass clippings, the mowing work can be done well at all times, the mowing can be done evenly, the horsepower consumption can be kept almost constant, and the grass collection line can be reliably and uniformly maintained. Can be formed. In addition, even if foreign objects such as stones on the work ground are blown toward the discharge port side by the cutter, the blown foreign objects collide with the regulating member and the flying energy is reduced, so that the foreign objects are thrown away from the sides of the mower body. It does not cause large splashes and is highly safe. Furthermore, the front and rear walls of the mower body are connected by a regulating member that also serves as reinforcement at the side of the mower body on the discharge port side, thereby reinforcing the side portion of the mower body on the discharge port side that supports the gauge member at the front end of the mower body. Therefore, even if an obstacle such as a stone collides with the side part or the gauge member, the side part will not be deformed by the impact of the collision. The present invention has the above-mentioned various advantages, and its structure is simple and can be implemented at low cost, making it highly profitable.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view of a tractor with a mower, Fig. 2 is a rear view of the same main part, Fig. 3 is a plan view of the mower, and Fig. 4 is a side view of the same.
5 is a sectional view taken along the line AA in FIG. 2, and FIG. 6 is a sectional view taken along the line BB in FIG. 3. DESCRIPTION OF SYMBOLS 1... Tractor body, 3... Mid-mount mower, 6... Mower body, 6a... Front part, 6b... Rear part, 8... Cutter, 15... Front wall, 16... Rear wall, 17... ...Ceiling wall, 18 ... Grass discharge passage, 20
... Grass discharge outlet, 30, 31 ... Front and rear gauge members, 32, 33 ... Front and rear limit gauge members,
38...Bracket, 44...Regulation member.

Claims (1)

[Scope of utility model registration request] A cutter is provided in a mower body having front and rear walls, a cutter is provided on one side in the lateral direction of the mower body, and a grass clippings discharge port that opens laterally is provided, and a gauge member is supported at the side of the front end of the mower body on the side of the discharge port. In the mower, the front and rear walls of the mower main body on the discharge port side are connected by a regulating member that also serves as reinforcement and whose upper and lower edges protrude above and below the cutter, respectively, and cover the cutter on the lateral side. A grass clippings discharge device for a mower, characterized in that a gap is formed between the top wall of the mower body and the top wall of the mower body, through which the grass clippings pass, and the inner surface of the regulating member is sloped outward toward the upper end. .