JP6731795B2 - Walk-behind management machine - Google Patents

Description

The present invention relates to a walk-behind management machine provided with a tilling claw that rotates around a lateral axis of a machine body and a cover that covers an upper side of the tilling claw.

In the conventional walk-type management machine, a cover for covering the upper side of the tilling claw is provided in a state of being fixed to the machine body (for example, refer to Patent Document 1).

JP 2012-60964 A

In the walk-behind management machine, when the tiller claw is driven and rotated while the machine body is running to perform the tilling work in the field, the soil repelled by the tiller claw repeatedly collides with the inner surface of the cover. At this time, soil that is bounced up and collides with the cover may adhere to the inner surface of the cover.

When the soil adheres to the inner surface of the cover in this manner, the scattered soil becomes more likely to adhere as the work is performed, and the accumulated and adhered soil may increase. As a result, cultivating work may be hindered, and the weight of the entire aircraft increases due to the soil that adheres, which increases the work load for workers operating while walking. There are disadvantages. Therefore, when a large amount of soil adheres to the inner surface of the cover, it is necessary to remove the adhered soil.

In the conventional walk-type management machine, the cover was fixed to the machine body, so when removing the soil adhering to the cover, insert a cleaning rod through the narrow gap between the lower side of the cover and the plowing claws, etc. Troublesome work was required.

Therefore, it has been desired to facilitate the work of removing the adhered soil.

The characteristic configuration of the walk-type management machine according to the present invention is provided with a tilling claw that rotates around a lateral axis of the machine body, and a cover that covers the upper side of the tilling claw,
The cover includes a frame member having an open area inside in plan view, and a surface member supported by the frame member and covering the open area,
The surface member is fixed in position by a fastener with respect to the frame member ,
The open area has a left open area extending from the central portion to the left end of the cover, and a right open area extending from the central portion to the right end of the cover,
It said face member is closed and the left planar member covering the opening area of the left and the right side member covering the right side of the open area,
The frame member is provided with a sliding support portion that slidably supports the surface member,
The surface member can be inserted into and removed from the frame member by sliding along the sliding support portion by releasing the fastener .

When performing plowing work, work is performed with the surface member attached to the frame member. When performing maintenance work such as work for removing soil attached to the cover, the work can be performed in a state in which the face member is removed from the frame portion and a large open work space is secured.

That is, when performing cultivating work, cover the upper side of the cultivating claw with a cover to prevent the soil repelled by the cultivating claw from scattering to the driver outside the aircraft, and perform good work. Therefore, when removing the soil adhering to the cover, the work can be easily performed while the cover is removed from the machine body and separated from the machine body.

Therefore, it becomes possible to easily perform the work of removing the soil attached to the cover that covers the upper side of the tilling claw.

Further, since the surface member can be slid along the sliding support portion to be inserted/removed, it is easy to attach/detach the frame member. Further, the surface member can be slid along the sliding support portion to hold the position in the sliding direction with a small number of fixtures, so that mounting work and removal work of the fixtures can be easily performed.

Instead of this configuration, for example, a configuration in which the surface member is attached to the frame member along the direction intersecting the plate surface and a plurality of locations around the surface member are attached to the frame member by fastening means such as bolts are also conceivable. However, with this configuration, it is difficult and troublesome to align the surface member with the frame member during the mounting operation. On the other hand, according to this configuration, as the work of attaching the surface member to the frame member, it suffices to perform the work of fixing the moving position in the sliding direction, and the work of attaching and removing can be easily performed.

In the present invention, the cover is formed in a curved shape so as to project upward in a side view of the machine body,
It is preferable that the surface member is supported by the slide support portion so as to be slidable and positionally fixed along a curved shape.

According to this configuration, the cover is curved so as to project upward in a side view of the machine body, so that the cover located on the upper side of the tilling claw can be brought as close as possible to the rotation trajectory of the tilling claw, and the plowed soil is covered by the cover. Good guidance can be given to return to the field without being scattered wastefully inside.

Similarly, the surface member that constitutes the cover is also curved so as to project upward, and the surface member is slidably supported by the slide support portion along the curved shape. As a result, the surface member can be smoothly slid while keeping the curved shape, and the mounting work and the removing work can be easily performed.

Therefore, although the plowed soil can be well guided, the mounting work and the removing work can be easily performed.

In the present invention, the surface member includes an inner side surface member provided on a side facing the tilling claw, and an outer side surface member provided outside the inner side surface member in a state of overlapping with the inner side surface member. ,
It is preferable that the inner side surface member and the outer side surface member are slidably and positionally supported by the slide support portion separately.

According to this configuration, one of the inner surface member and the outer surface member is fixed to the sliding support portion, and the other is slid so that the surface member of the outer peripheral portion of the tiller claw is fixed. You can change the area covered. For example, one of the inner side member and the outer side member that is fixed is fixed to one end of the frame member, and the other that is slid is fixed so that it projects outward from the other end of the frame member. Then, the protruding surface member is also used as an existing ground leveling plate as compared with the conventional one, whereby the configuration can be simplified.

In the present invention, the surface member is preferably made of an elastic body.

According to this configuration, since the surface member is made of the elastic body, when the soil bounced off by the tilling claw collides with the surface member, the impact force is absorbed by the elastic deformation, so that the soil adheres. It will be difficult. Further, it is also possible to exert the action of shaking off the soil already attached to the surface member by the vibration at the time of collision. Further, since it is an elastic body, the entire cover can be made lighter than that made of a metal material, and the labor burden on the operator can be reduced.

It is the whole walk-behind management machine side view. It is a whole plan view of a walk-behind management machine. FIG. 7 is a perspective view of the cover with a face member removed. It is a perspective view of a cover with a surface member attached. It is a vertical side view of a cover. It is a vertical side view of the cover of another embodiment. It is a vertical side view of the cover of another embodiment.

Hereinafter, an embodiment of a walk-behind management machine according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the walk-behind management machine is provided with axles 2 on the right and left sides of a lower portion of a mission case 1, and wheels 3 for traveling are connected to the right and left axles 2. The engine 5 is supported by a support frame 4 connected to the front of the mission case 1. A transmission case 6 extends obliquely rearward and downward from the upper part of the transmission case 1, a steering handle 7 extends obliquely rearward and upward from the transmission case 6, and the transmission case 6 is provided with a rotary tiller 8. ..

As shown in FIGS. 1 and 2, in the rotary cultivating device 8, a drive shaft 9 extends from the lower portion of the transmission case 6 to the right and left sides, and a plurality of cultivating claws 10 are fixed to the right and left drive shafts 9. The cover 11 covers the upper part of the tilling nail 10, the resistance rod 12, the flat plate 13 made of a rubber plate, and the metal leveling plate 14. The right and left drive shafts 9 and the plowing claws 10 are normally rotationally driven in the forward rotation direction (direction of arrow A1 in FIG. 1), but are also rotationally driven in the reverse rotation direction (direction of arrow A2 in FIG. 1). It is possible.

The flat plate 13 receives the soil flipped up by the tilling claw 10 and prevents the soil from being scattered to the outside of the machine body. Further, the ground leveling plate 14 is used when the cultivated soil is leveled to level the leveled state.

The power of the engine 5 is transmitted from the output shaft 5a of the engine 5 to the input shaft 1a of the mission case 1 via the belt transmission mechanism 15. Then, the power is transmitted from the mission case 1 to the traveling wheels 3, and the power is transmitted to the rotary tiller 8 through the transmission case 6, so that the rotary tiller 8 performs the tillage work in the field while the vehicle is traveling. You can

As shown in FIG. 4, the cover 11 is configured by connecting the fan-shaped lateral wall portions 11b to the right and left side portions of the semi-cylindrical ceiling portion 11a, and the upper, right and left drive shafts of the transmission case 6. 9 and the upper part of the tiller 10 are covered.

As shown in FIGS. 3 and 4, the bracket 16 fixed to the transmission case 6 extends rearward, and the narrow rectangular pipe-shaped tubular member 17 is fixed to the bracket 16 so that the tubular member 17 is It projects upward from the opening of the ceiling portion 11a. The resistance rod 12 is slidably fitted in and supported by a tubular member 17, and is fixed in position by a fixing pin 18.

A plurality of fixing holes 12a are formed in the upper portion of the resistance rod 12 along the longitudinal direction thereof. The resistance rod 12 is inserted into the tubular member 17, the fixing pin 18 is inserted into one of the fixing holes 12 a of the resistance rod 12, and the resistance rod 12 is fixed.

In the state shown in FIG. 1, the plowing (plowing) of the field is performed by moving forward while rotating the plowing claw 10 in the normal rotation direction (direction of arrow A1 in FIG. 1). When the lower end of the resistance rod 12 is in contact with the field, the height of the rotary tiller 8 with respect to the field is determined, and the tilling depth of the rotary tiller 8 is determined.

As shown in FIGS. 3 and 4, the cover 11 includes a frame member 19 having an open area inside when viewed in plan, and a surface member 21 supported by the frame member 19 and covering the open area 20.
The surface member 21 is attachable to and detachable from the frame member 19. The frame member 19 is provided with a sliding support portion 22 that slidably supports the surface member 21. The surface member 21 is slid along the sliding support portion 22 toward the rear side of the machine body in plan view, and is removed or removed along the sliding support portion 22 toward the front side of the machine body in plan view. By inserting, the frame member 19 can be attached and detached freely.

In addition, the frame member 19 is made of a sheet metal material and has a large supporting strength. The semi-cylindrical ceiling portion 11a has a pair of left and right substantially rectangular open areas 20 formed therein. There is. Sliding support portions 22 for slidably supporting the surface member 21 are formed along both end edges of the open areas 20 on the left and right sides of the ceiling portion 11a. Therefore, a total of four sliding support portions 22 are formed. An insertion portion 23 into which the surface member 21 can be inserted and inserted into the sliding support portion 22 is formed at the rear end of the ceiling portion 11a.

The surface member 21 is composed of a rubber plate as an elastic body. The surface member 21 is inserted and inserted from the insertion portion 23, and is slidably supported by the sliding support portion 22. The surface member 21 is inserted and inserted up to the front end portion 24 of the sliding support portion 22 whose front end portion is closed. In this inserted state, as shown in FIG. 5, the rear end portion of the surface member 21 is provided at substantially the same position as the rear end portion 25 of the slide support portion 22.

Tightening screws 26 as fasteners are screwed and attached to the front and rear intermediate portions of the two slide support portions 22 located on the outermost side in the left-right direction of the four slide support portions 22. The surface member 21 can be positioned in the sliding direction by tightening the screw 26 while the surface member 21 is inserted and mounted. Further, by loosening the screw 26, the surface member 21 can be slid and removed. Since the screws 26 are arranged at the positions close to the left and right ends of the rotary tiller 8 as described above, it is easy to tighten or loosen the screw 26 from the lateral outside of the rotary tiller 8.

Therefore, the cover 11 is curved so as to project upward in a side view of the machine body. The surface member 21 is supported by the slide support portion 22 so as to be slidable and positionally fixable along the curved shape.

[Another embodiment]
(1) In the above-described embodiment, the front end portion and the rear end portion of the surface member 21 are at substantially the same positions as the front end portion 24 and the rear end portion 25 of the sliding support portion 22, in other words, the surface member 21. Although the front-rear width is substantially the same as the front-rear length of the slide support portion 22, it may be configured as follows instead of this configuration.

As shown in FIG. 6, the front-rear width of the surface member 21 may be longer than the front-rear length of the slide support portion 22. In this configuration, the extension protrusion 21A protruding outward from the rear end of the sliding support portion 22 of the surface member 21 can be configured to also serve as the flat plate 13 in the above-described embodiment, and the configuration is simplified. be able to.

(2) In the above-described embodiment, the surface member 21 is shown to be composed of one plate material, but instead of this structure, it may be structured as follows.

That is, the surface member 21 includes an inner side surface member 27 provided on the side facing the tilling claw 10 and an outer side surface member 28 provided outside the inner side surface member 27 in a state of overlapping with the inner side surface member 27. The inner surface member 27 and the outer surface member 28 may be slidably and positionally supported by the slide support portion 22 separately.

As shown in FIG. 7, in this embodiment, the inner side surface member 27 is located inside so as to face the tilling claw 10, and the length along the circumferential direction of the surface member 21 is slidable as in the above embodiment. The width is set to correspond to the length along the circumferential direction of the dynamic support portion 22, and the sliding support portion 22 is supported in a state of being received and supported so that the end portion on the opposite side of the insertion portion 23 does not slide further. .. The outer side surface member 28 is provided such that the rear side of the machine body protrudes outward more than the rear end portion 25 of the slide support portion 22. The outer protruding portion 28A of the outer surface member 28 can also serve as the flat plate 13 of the above-described embodiment. Then, the positioning screw 26 is configured to be inserted through the insertion hole formed in the outer side member 28 in advance to tighten and fix the inner side member 27.

In this embodiment, the screw 26 is loosened, the outer side member 28 is slid until the front end portion reaches the front end portion of the slide support portion 22, and the inner side member 27 is slid so as to project to the front side. As a result, the outer protruding portion 27A of the inner side surface member 27 corresponding to the flat plate of the above embodiment can be provided on the front side of the machine body. For example, it can be used when the tiller 10 is driven in the reverse rotation state.

(3) In the above embodiment, the surface member 21 is configured to be slidable along the curved shape, but instead of this structure, the surface member 21 may be supported so as to be slidable in the lateral direction of the machine body. That is, it is a configuration in which the plane member curved in an arcuate shape in a side view is slid in the lateral direction of the machine body along the upper edge of the lateral wall portion 11b.

(4) In the above embodiment, the surface member 21 is made of a rubber plate as an elastic body. However, the face member 21 is not limited to the rubber plate, and may be a synthetic resin material or a metal plate material. ..

(5) In the above-described embodiment, the walk-type management machine includes the pair of left and right traveling wheels and the rotary tilling device located on the rear side of the body of the wheels, but instead of this configuration, the mission It is also possible to use a management machine having a configuration in which an axle extending from the case to the left and right is provided with a plowing pawl, and both the plowing work and the forward traveling of the machine body are performed by rotation of the plowing pawl.

INDUSTRIAL APPLICABILITY The present invention can be applied to a walk-behind management machine provided with a tilling claw that rotates around a lateral axis of the machine body and a cover that covers the upper side of the tilling claw.

10 Tilling Claw 11 Cover 19 Frame Member 20 Open Area 21 Surface Member 22 Sliding Support Part
26 screws (fasteners)
27 Inner Side Member 28 Outer Side Member

Claims (4)

A tilling claw that rotates around a lateral axis of the machine body, and a cover that covers the upper side of the tilling claw are provided,
The cover includes a frame member having an open area inside in plan view, and a surface member supported by the frame member and covering the open area,
The surface member is fixed in position by a fastener with respect to the frame member ,
The open region has a left open region extending from the center of the cover to the left end, and a right open region extending from the center of the cover to the right end,
It said face member is closed and the left planar member covering the opening area of the left and the right side member covering the right side of the open area,
The frame member is provided with a sliding support portion that slidably supports the surface member,
The walk- behind management machine in which the surface member can be inserted into and removed from the frame member by sliding along the sliding support portion by releasing the fastener . The cover is formed so as to project upward in a side view of the machine body,
The walk-behind management machine according to claim 1, wherein the surface member is supported by the sliding support portion so as to be slidable along a curved shape and fixed in position. The surface member includes an inner surface member provided on a side facing the tilling claw, and an outer surface member provided outside the inner surface member in a state of overlapping with the inner surface member,
The walk-behind management machine according to claim 2, wherein the inner surface member and the outer surface member are slidably and positionally supported by the sliding support portion, respectively. The walk-behind management machine according to any one of claims 1 to 3, wherein the surface member is made of an elastic body.

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