KR20120030019A - Rotary tilling device - Google Patents

Abstract

PURPOSE: A rotary cultivating apparatus is provided to improve the workability of the apparatus by omitting an attaching and detaching operation with respect to a flat board. CONSTITUTION: A rotary cultivating apparatus includes a flat board(18), a restricting member(15), and a stopping board(20). The float board is flexible. The upper side of the float board is in connection with the rear part of a cover. The restricting member is in connection with the transversal center part of the lower side of the flat board. The restricting member converts into a restricting state and a releasing state. The restricting state restricts the movement of the transversal center part. The stopping board flattens cultivating ground.

Description

Rotary tiller {ROTARY TILLING DEVICE}

The present invention relates to a rotary tillage device for carrying out a mockup and flattening operation of tillage.

Background Art As a conventional rotary tiller, it is known to attach a flexible plate (rubber mat or the like) to the rear end portion of a cover and a resistance bar to carry out mockup.

In the case of carrying out the mock-up work by such a rotary tilling device, the movement of the transverse center portion of the lower side of the plate is restricted by the regulating member. As a result, when the rotary tilling device is driven forward, one side and the other side of the flat plate are bent backwards by the earth pressure, and soil is released therefrom to form ribs on both the left and right sides (see Patent Document 1).

Japanese Patent Application Publication No. 2009-225731

In patent document 1, when the lower side part of a flat plate is removed from a regulating member, the whole flat plate can be moved backwards, and the flat plate can be used for the flattening operation.

However, since the flat plate is flexible, the flat plate may be partially elastically deformed at the time of flattening, and in the case of flattening the tillage, when a neat finish is required, the flat plate is made of a hard stop plate (made of sheet metal). Etc.).

That is, the conventional rotary tillage device has the trouble of mounting or removing a flat plate at the time of carrying out mockup work and flattening work.

This invention is made | formed in view of such a problem, and an object of this invention is to provide the rotary cultivation apparatus which does not need to perform the detachment | desorption operation | work of a plate at the time of carrying out a mockup work and a planarization work.

The 1st characteristic structure of the rotary tillage apparatus which concerns on this invention is flexible, and the upper end part contact | connects the transverse center part of the lower side part of the said flat plate connected to the rear end part of the cover of a rotary tillage device, A regulating member capable of switching the transverse center portion to the rear of the cover, and a regulating member switchable to a released state to allow the transverse center portion to move to the rear of the cover, and a rigid member for flattening the tillage. And a stop plate disposed behind the plate to allow the plate and the stop plate to swing up and down using the rear end portion of the cover as a support point, and the stop plate to be rearward or upward from the plate. It is provided with a means capable of maintaining the posture spaced apart.

[Action and effect]

As in this configuration, if the hard stop plate is disposed behind the plate, and the plate and the stop plate can swing up and down with the rear end portion of the cover as the support point, the regulating member is released and the stop plate is rocked downward. By setting it as a posture suspended from the rear end of the cover, the flat plate and the stop plate are swung up and down in an integrated state, and the flattening operation can be performed. At this time, since the flat plate is located at the front and the stop plate is located at the rear, most of the stop plate functions, so that the tillage becomes flat. In addition, since the tilling soil which springs up by the tillage hook is easy to hit the flat plate of the front, and is hard to hit the rear stop plate, the stop plate is hard to be damaged. In addition, even when tilling hits the flat plate, the flat plate may be slightly elastically deformed, so the tilling soil is hardly attached to the flat plate.

Moreover, if it is equipped with the means which can hold | maintain a stop plate in the posture spaced back or upward from a flat plate like this structure, it will make a regulating member into a regulated state, and will hold a stop plate in the posture spaced back or upward from a flat plate. As a result, the stop plate does not interfere with the formation of the ridges and can form the ridges efficiently by the flat plate.

Therefore, according to this structure, when carrying out mockup work and flattening work, it is not necessary to attach or remove a flat plate, and workability is good.

A 2nd characteristic structure is a point in which the said flat plate and the said stop plate have horizontal length shape of the same or about the same magnitude | size.

[Action and effect]

According to this structure, the fluctuation of a flat plate can be suppressed more reliably by the stop plate located behind a flat plate at the time of flattening operation. In addition, since the stop plate is in a state of being covered behind the flat plate with respect to the tilling hook, the tilling soil springed up by the tilling hook is hardly hit against the stop plate.

In a third characteristic configuration, in the state where a gap is formed between the flat plate and the stop plate by providing a connecting portion on the stop plate, providing a connected portion on the flat plate, and connecting the connecting portion and the connected portion, The plate and the stop plate are releasably connected.

[Action and effect]

According to this structure, since the clearance gap is formed between a flat plate and a stop plate by connection of the connection part of a stop plate, and the to-be-connected part of a flat plate, a flat plate is more elastically deformable and it is scattered by tillage at the time of flattening operation. Since the broken stone hits the flat plate and the shock is absorbed more reliably, the stop plate is more difficult to be damaged. In addition, since the flat plate easily vibrates in the front-rear direction during the flattening operation, the tilled soil is less likely to adhere to the flat plate.

In addition, since the stop plate and the flat plate can be lifted together by connecting the connection portion of the stop plate and the connected portion of the flat plate, maintenance of the inside of the rotary tiller can be easily performed.

1 is an overall side view of a walkable work machine;
2 is an overall plan view of the walkable work machine.
3 is a longitudinal side view of the rotary tillage device during the planarization operation;
4 is a rear view of the rotary tillage device during the planarization operation.
5 is a rear view of the rotary tillage device at the time of mockup digging work.
6 is a cross-sectional view of a plate.
7 is a perspective view of the hinge member.
8 is a perspective view of the connecting portion.
9 is a perspective view of the rotary tillage device during the planarization operation;
The longitudinal side view of the rotary tillage device at the time of mockup digging operation.
11 is a rear view of the rotary tillage device at the time of mockup digging work.
The longitudinal side view of the rotary tillage device at the time of maintenance work.

[Embodiment]

Based on FIG. 1 thru | or 12, embodiment when the rotary tillage device 8 which concerns on this invention is applied to a walking type work machine is demonstrated.

As shown in Figs. 1 and 2, the walk type work machine is provided with axles 2 on the right and left sides of the lower part of the mission case 1, and the driving wheels 3 on the axles 2 on the right and left sides. The engine 5 is supported by this support frame 4 connected to the front part of the mission case 1, and is comprised.

The transmission case 6 extends from the upper part of the mission case 1 in the inclined rear direction downward, the steering wheel 7 extends in the inclination rear upper direction from the transmission case 6, and the rotary tiller is provided to the transmission case 6. (8) is provided.

As shown in FIGS. 1 and 2, the rotary tiller 8 extends the drive shaft 9 from the bottom of the transmission case 6 to the right and left sides, and includes a plurality of normal and reverse regions on the right and left drive shafts 9. The rotary hook 10 is fixed, and is comprised with the cover 11, the resistance bar 12, the flat plate 18, and the stop plate 20 which cover the upper direction of the forward / backward rotary hook 10. As shown in FIG. The drive shaft 9 and the reverse rotation hook 10 on the right and left sides are usually driven in the forward rotation direction (direction of arrow A1 in FIG. 3), but also in the reverse rotation direction (direction of arrow A2 in FIG. 3). It is possible to drive rotation.

As shown in FIG. 3 and FIG. 4, the cover 11 is comprised by the fan-shaped horizontal wall part 11b connected to the right side and left side of the semi-cylindrical ceiling part 11a, The upper, right and left drive shafts 9 and the upper and lower rotation hooks 10 are covered with the upper portion, and the ceiling portion 11a of the cover 11 is connected to a bracket (not shown) of the transmission case 6.

As shown in Figs. 3 and 4, the bracket 13 fixed to the transmission case 6 extends backward, so that the narrow angled pipe-shaped bracket 14 is fixed to the bracket 13, and the bracket 14 protrudes upward from the opening part of the ceiling part 11a. The support member 17 is fixed to the upper part of the bracket 14. An L-shaped fixing pin 16 for fixing the resistance bar 12 to the bracket 14 is supported by the support member 17 so as to be slidable (left and right direction of the paper in FIG. 4) and rotatably. The supporting member 17 is provided with a spring 29 which presses the fixing pin 16 from the opening (not shown) of the bracket 14 to the insertion side (the right side of the page in FIG. 4). The first hook portion 14a is provided on the rear side of the upper portion of the bracket 14.

As shown in FIG. 3 and FIG. 4, the resistance bar 12 is comprised in elongate rod shape, and the plate-shaped restricting member 15 is provided in the lower part. The regulating member 15 is comprised with the board | substrate 15a and the latching piece 15b which stands up from the board | substrate 15a, and is provided.

The restricting member 15 hangs the lower side portion 27b (the transverse center portion of the lower side portion of the flat plate 18, see FIG. 5) of the metal plate 27 provided on the flat plate 18 by the catching piece 15b. Release to allow the lower side portion 27b of the metal plate 27 to move to the rear of the cover by removing the restriction state and the locking piece 15b that restricts the lower side portion 27b of the 27 to move behind the cover. It is comprised so that switch to state is possible.

A plurality of fixing holes 12a are opened in the upper portion of the resistance bar 12 along its longitudinal direction. 3 and 4, the resistance bar 12 is inserted into the bracket 14, the fixing pin 16 is inserted into one of the fixing holes 12a of the resistance bar 12, and the resistance The rod 12 is fixed to the bracket 14. In this state, the resistance bar 12 is located just behind the transmission case 6, and the restricting member 15 is located below the left and right central portions of the rear end portion of the ceiling portion 11a of the cover 11.

In the state shown in FIG. 3 and FIG. 4, the plowing of the pavement is carried out by advancing the drive shaft 9 and the forward and backward rotation hook 10 on the right and left in the forward rotation direction (direction of arrow A1 in FIG. 3). (Cultivation) is performed. When the lower end of the resistance bar 12 is grounded to the pavement, the height of the rotary tiller 8 for the pavement is determined, and the tilling depth of the rotary tiller 8 is determined.

In this embodiment, the tilling depth of the rotary tillage device 8 can be changed as needed. For example, to set the depth of tillage of the rotary tiller 8 deeper, the fixing pin 16 is drawn out to the left side of the page of FIG. 4, rotated about 90 degrees, and the bent portion of the support member 17 ( Walk to 17a) and keep it in the drawn state. Then, the resistance bar 12 is moved upward, and the fixing pin 16 is inserted again into another fixing hole 12a located below the resistance bar 12 to fix the resistance bar 12. Thereby, since the height of the resistance bar 12 with respect to the rotary tiller 8 is changed to a higher position, the tilling depth of the rotary tiller 8 is also set deeper. On the other hand, if you want to set the tilling depth of the rotary tiller 8 to be shallower, the fixing pin 16 is kept in the drawn state, the resistance bar 12 is moved downward, and the fixing pin 16 is moved. The resistance bar 12 is fixed by reinserting into another fixing hole 12a located above the bar 12.

As shown in FIG. 3, the rectangular flat plate 18 and the stop plate 20 are vertically moved through the hinge member 26 (see FIG. 7) to the rear end portion of the ceiling portion 11a of the cover 11. Is connected oscillatingly.

As shown in FIG. 5, the flat plate 18 is comprised by the rubber plate etc. which have flexibility, and the width | variety is set to the magnitude | size similar to the width of the cover 11. As shown in FIG.

As shown in FIG. 5, the T-shaped metal plate 27 is provided on the surface side of the flat plate 18 such that the T-shaped metal plate 27 is horizontally symmetrical when viewed from the front with the transverse center of the flat plate 18 as the center line L. FIG. It is. The upper and lower widths of the metal plate 27 are approximately equal to the upper and lower widths of the flat plate 18, and the horizontal width of the upper edge portion 27a of the metal plate 27 is shorter than the horizontal width of the flat plate 18. In addition, in this specification, the surface of each structural member means the side facing the back of a walking type work machine, and the back side means the side facing the rotary tillage device 8.

As shown in FIG. 5 and FIG. 6, the metal plate 27 penetrates the bolt B1 so as to span the flat plate 18 in the upper side portion 27a and the lower side portion 27b of the metal plate 27. It is fixed by tightening with a nut from the back side of the. Moreover, the U-shaped to-be-connected part 28 is welded and fixed to the lower side part 27b of the metal plate 27 by planar view.

As illustrated in FIG. 7, the hinge member 26 pivots by separately pivoting the first hinge surface 26a having two through holes H1 and the first hinge surface 26a. It is comprised with the 2nd hinge surface 26b and the 3rd hinge surface 26c which support-connect. As shown in FIG. 4, the 1st hinge surface 26a of the hinge member 26 is fixed by the bolt B2 and the nut in the left and right both ends of the rear end part of the ceiling part 11a.

As shown in FIG. 4, the elongate flat fixing member 19 is being fixed to the back surface of the rear end part of the ceiling part 11a by the bolts B2 and B3 and a nut (not shown). The length of the fixing member 19 in the longitudinal direction is set to a length substantially equal to the width of the ceiling portion 11a. Stopper portions 19a are formed at both end portions of the fixing member 19, and when placed on the rear surface of the rear end portion of the ceiling portion 11a, the stopper portion 19a is rearward from the rear end portion of the ceiling portion 11a. It is slightly pushed out.

As shown in FIG. 3, the stop plate 20 is made of metal and is disposed behind the flat plate 18. As shown in FIG.3 and FIG.4, although the up-down width and the horizontal width of the stop plate 20 in this embodiment are set slightly larger than the flat plate 18, you may set it to the same magnitude | size.

As shown in FIG. 3, the lower end portion of the stop plate 20 is bent forward, and as shown in FIG. 4, a serrated stop portion 21 is formed in the lower end portion of the stop plate 20. have. In the state shown to FIG. 3 and FIG. 9, the stop part 21 will be in the state located below the lower end part of the flat plate 18. FIG.

As shown in FIG. 4, five ribs 22 extending in the vertical direction are arranged in the horizontal direction on the surface side of the stop plate 20 so as to be symmetrical when viewed from the front with the center line in the horizontal direction as the center line. . In addition, these five ribs 22 are for reinforcing the stop plate 20.

In addition, the semi-cylindrical shape which penetrates the transverse direction one by one on both the left and right sides of the center line in the lower part of the horizontal direction center on the surface side of the stop plate 20 as a center line The through portion 23 is formed. The U-shaped hook member 24 is supported so as to be able to swing up and down using the penetrating portion 23 as a supporting point by sandwiching each of the left and right end portions from the center line side with respect to the right and left penetrating portions 23. .

As shown in FIG. 3, the connection part 25 comprised with the two leaf | plate springs 25a arranged in the up-down direction in the lower part of the horizontal direction center in the back surface side of the stop plate 20 (FIG. 8). Is fixed).

As shown in FIG.3 and FIG.4, in the left and right both ends of the rear end part of the ceiling part 11a, the 1st hinge surface 26a of the hinge member 26 arrange | positioned at the surface side of the ceiling part 11a, and The hinge member 26 is formed by penetrating the bolt B2 so as to span the fixing member 19 disposed on the rear surface side of the ceiling portion 11a and fastening it with a nut (not shown) from the side of the fixing member 19. And the fixing member 19 are fixed by semi-fastening.

As shown in FIG. 7, the through hole H2 is formed in the second hinge surface 26b of the hinge member 26. As shown in FIG. 5, the bolt B5 is penetrated so as to span the second hinge surface 26b, the left and right end portions of the upper side portion 27a of the metal plate 27, and the plate 18, and the plate 18. The plate 18 is connected to the second hinge surface 26b of the hinge member 26 by fastening with a nut (not shown) from the rear surface side of the hinge member 26. In addition, about the connection method of the flat plate 18, it is not limited to the said structure, You may simply fix the upper end part of the flat plate 18 to the rear end part of the ceiling part 11a with a bolt and a nut.

In addition, as shown in FIG. 4, the stop plate 20 hinges by welding the back surface of the 3rd hinge surface 26c of the hinge member 26, and the left-right upper-end part of the surface of the stop plate 20. FIG. It is connected to the 3rd hinge surface 26c of 26. As shown in FIG.

Next, the flattening operation will be described.

When the flattening operation is performed, first, the fixing pin 16 is kept in a drawn state, and the resistance piece 12 is moved downward to move the engaging piece 15b of the restricting member 15 downward. The flat plate 18 is rotated to the rear and placed behind the locking piece 15b as shown in FIG. 3, and then the resistance rod 12 is moved upward again. At this time, the to-be-connected part 28 of the flat plate 18 is clamped by the connection part 25 of the stop plate 20, and it is in the connected state, and the left and right upper ends of the stop plate 20 stopper of the fixing member 19. Since it is caught by the portion 19a (see FIG. 4), as shown in FIG. 3, the flat plate 18 and the stop plate 20 no longer swing to the forward rotation hook 10 side and are obliquely when viewed from the side. Stay in an inclined position. In the connection state of the flat plate 18 and the connection part 25 shown in FIG. 3, the clearance gap which gradually becomes wider in front-and-back width between the flat plate 18 and the stop plate 20 is formed. In addition, although not shown in figure, you may comprise the connection part 25 and the to-be-connected part 28 between the flat plate 18 and the stop plate 20 so that the space | interval which equals front and back width may be formed from the base end side to the front end side.

As shown in FIG. 9, in the rotary tiller 8, the right and left drive shafts 9 and the forward and reverse rotation hooks 10 are rotated in the forward rotation direction (arrow A1 in FIG. 3) with the advance of the gas. Direction), the tilled soil is accommodated by the rear surface of the flat plate 18, the flat plate 18 and the stop plate 20 move backward, and the stopper 21 of the stop plate 20 As a result, a flat screen is formed. At this time, since the gap is formed between the flat plate 18 and the stop plate 20 by the connection of the connected portion 28 of the flat plate 18 and the connecting portion 25 of the stop plate 20, the flat plate 18 is It is easy to elastically deform, and since the stone scattered by tillage hits the flat plate 18, and the shock is absorbed, the stop plate 20 is hard to be damaged. In addition, since the flat plate 18 tends to vibrate in the front-rear direction during the flattening operation, the tilled soil is difficult to adhere to the flat plate 18.

Next, the mockup work will be described.

In the case of cutting the groove, first, the connection portion 28 of the flat plate 18 and the connection portion 25 of the stop plate 20 are disconnected, and as shown in FIG. 10, the stop plate 20 is removed. The stop plate 20 is held in a posture spaced upwardly from the flat plate 18 by rotating upward and engaging the hook member 24 of the stop plate 20 by the first hook portion 14a of the bracket 14. . In addition, the stationary plate 20 may be maintained at a position higher than the formed ridges, and may be maintained in a posture spaced rearward from the flat plate 18 without being limited upward.

Subsequently, the fixing pin 16 is kept in the drawn state, and the resistance bar 12 is moved downward to move the locking piece 15b of the restricting member 15 downward, and then the flat plate 18 is moved. After rotating forward and arrange | positioning ahead of the latching piece 15b as shown in FIG. 10, the resistance rod 12 is moved upwards again and it will be in a restricted state. Thereby, as shown in FIG. 10 and FIG. 11, the lower side part 27b (the horizontal center part of the lower side part of the flat plate 18) of the metal plate 27 provided in the flat plate 18 is attached to the latching piece 15b. As a result, the movement of the lower side portion 27b of the metal plate 27 to the rear of the cover 11 is restricted.

With the advancement of the gas, the soil cultivated by the rotational drive of the forward / backward rotation hook 10 in the forward rotation direction (direction of arrow A1 in FIG. 3) is accommodated by the flat plate 18, but is installed on the flat plate 18. The lower side part 27b of one metal plate 27 does not move to the rear of the cover 11, but the left and right lateral sides of the flat plate 18 move to the rear.

As a result, as shown in FIG. 11, with the virtual extension line T1 (refer FIG. 5) in the flat plate 18 as a bending line, the horizontal side part of one side and the other of the flat plate 18 is obliquely rearward. It will be bent.

As shown in FIG. 11, the bottom portion C1 of the ridges C is formed by the transverse center portion of the lower side portion of the flat plate 18 and the lower side portion 27b of the metal plate 27 provided on the flat plate 18. It forms, and the wall part C2 of the right and left horizontal ribs C is formed by the bent left and right horizontal side parts of the flat plate 18.

Finally, the case where the maintenance work of the drive shaft 9, the reverse rotation hook 10, etc. in the rotary tiller 8 is demonstrated is demonstrated.

When the maintenance work is performed after the flattening work is finished, the flat plate 18 and the stop plate 20 are rotated upward together from the state shown in FIG. 3 to rotate the hook member 24 of the stop plate 20. The first hook portion 14a of the bracket 14 is caught. As a result, as shown in FIG. 12, the flat plate 18 and the stop plate 20 are held in an upright position. As a result, maintenance work of the drive shaft 9, the reverse rotation hook 10, etc. can be performed efficiently, without the flat plate 18 and the stop plate 20 being obstructed.

In addition, in the case where maintenance work is performed after finishing the mock-up work, in the state shown in FIG. 10, the regulating member is held by holding the fixing pin 16 in a pulled state and moving the resistance bar 12 downward. The locking piece 15b of 15 is moved downward. Then, after the plate 18 is rotated to the rear and arranged behind the locking piece 15b, the resistance rod 12 is moved upward again.

Subsequently, as shown in FIG. 12, the flat plate 18 is rotated upwards, and the to-be-connected part 28 of the flat plate 18 and the connection part 25 of the stop plate 20 are connected. As a result, the flat plate 18 and the stop plate 20 are held in an upwardly lifted posture. As a result, the maintenance work of the drive shaft 9 and the reverse rotation hook 10 can be performed efficiently, without the flat plate 18 and the stop plate 20 being disturbed.

The present invention is not only a walking type work machine provided separately with a driving wheel and a rotary tillage device, but also a walking type work machine configured to form a rotary tilling device by closing the driving wheels and connecting a reverse rotation hook to the right and left axles. It is also useful as a rotary tillage device equipped with a tractor of a riding type.

11: cover
12: resistance bar
15: lack of regulation
18: reputation
20: stop plate
24: hook member (means capable of holding the stop plate in a position spaced rearward or upward from the flat plate)
25: connection
27b: Lower side part (lateral center part of lower side part)
28: connected part

Claims (3)

A flat plate having flexibility and having an upper end connected to the rear end of the cover of the rotary tiller,
A regulation state that contacts the transverse center portion of the lower side of the flat plate and regulates the transverse center portion to move rearward of the cover and a controllable switchable to a release state that allows the transverse center portion to move rearward of the cover Absence,
With a hard stop plate for leveling the tillage,
The stop plate is disposed behind the plate to allow the plate and the stop plate to swing up and down with the rear end portion of the cover as a support point, and to hold the stop plate in a posture spaced rearward or upward from the plate. A rotary tillage device comprising possible means. The rotary tillage device according to claim 1, wherein the flat plate and the stop plate have a transverse length shape of the same or approximately the same size. A gap is formed between the flat plate and the stop plate according to claim 1 or 2, wherein a connection part is provided on the stop plate, a connection part is provided on the plate, and a gap is formed between the plate and the stop plate by connection of the connection part and the connected part. And, in the state, the plate and the stop plate are releasably connected.

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