JP2010154867A - Tiller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact tiller capable of performing tilling work and ridging work. <P>SOLUTION: The tiller includes a ground resistance bar 14 vertically passing through a tilling rotor cover 13 and also vertically passing through the rear side of a tilling rotor 12, a rubber-made ridging plate 22 whose upper end part is supported at the rear end part of the tilling rotor cover 13 and stretched over in the horizontal direction and whose lower end side is hung down to the rear side of the tilling rotor 12 and the ground resistance bar 14, and a ridging plate supporting part 21b supporting and acting at the central part in the ridging plate width direction of the lower end of the ridging plate 22 so that the movement to the rear side, caused by work reaction of the lower end of the ridging plate 22 is suppressed to maintain the ridging plate 22 to be acting state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tilling device including a tilling rotor, a tilling rotor cover, and a grounding resistance rod located behind the tilling rotor.

  2. Description of the Related Art Conventionally, there is a tilling device provided with a tilling rotor as disclosed in, for example, Patent Document 1. The tilling device described in Patent Literature 1 includes a rotary as a tilling rotor, a rotary cover as a tilling rotor cover, and a work implement mounting bracket. The work machine mounting bracket is connected to a work machine such as a plow. The work implement mounting bracket projects from a support member that is mounted on a transmission case that supports the rotary so as to project upward from the rotary cover.

Japanese Patent No. 3069302 (paragraphs [0007], [0012], FIGS. 3 and 9)

If the above-mentioned technology related to work equipment connection is used to obtain a tilling device that can be attached with a soil cultivator so that the soil cultivation work can be performed at the same time as the soil cultivation work after cultivating with the cultivation rotor, Tended to be.
In other words, the connecting portion provided for attaching the cultivator to the tilling device is positioned above the tilling rotor cover at a high arrangement height from the ground. The soil culturing section of the soil cultivator in the working state is located near the ground so as to act on the post-plowing ground. As a result, the length of the frame body of the earthenware device is increased in the vertical direction of the machine body, or the frame body is bent in a side view of the machine body. Then, it is necessary to provide the frame body with excellent strength so that the frame body firmly supports the culturing action portion against the work reaction force regardless of the length and shape thereof. As a result, the frame of the earthenware tended to be large.

  An object of the present invention is to provide a tilling device that can perform a soil culturing operation at the same time but can be completed with a small soil cultivator.

The first aspect of the present invention is a tilling device including a tilling rotor, a tilling rotor cover, and a grounding resistance rod located behind the tilling rotor.
A connecting portion for attaching a cultivator is provided at a position of the grounding resistance rod located on the inner side of the tillage rotor cover.

  According to the configuration of the first aspect of the invention, the cultivator can be attached by the connecting portion. Since the connecting portion is provided in a portion of the grounding resistance rod located on the inner side of the tillage rotor cover, the cultivator is attached at a portion having a low arrangement height on the inner side of the cultivator rotor cover. While keeping the body short and simple, it is possible to mount a soil cultivator in which the soil cultivating section is firmly supported against work reaction force.

  Thus, while it is possible to perform the cultivation work and the cultivation work at the same time by connecting the cultivator, it is only necessary to prepare a small cultivator and it is inexpensive.

It is a whole side view of a walking type tiller. It is a whole top view of a walking type tiller. It is a vertical side view of a tillage device. (A) is a plan view of the lock pin in the locked state, and (B) is a rear view of the lock pin in the locked state. It is a perspective view in the locked state of a lock pin. It is a perspective view of a cultivator. It is a rear view in the operating state of the earthenware container. It is a rear view in the action posture of a locking tool. It is a perspective view of an auxiliary wheel. It is a side view of a tillage device provided with another implementation structure. It is a top view of the earthenware machine provided with another implementation structure. It is a rear view of the earthenware container provided with another implementation structure.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall side view of a walking type tiller to which a tilling device 10 according to an embodiment of the present invention is connected. FIG. 2 is an overall plan view of the walking type tiller to which the tilling device 10 according to the present embodiment is connected. As shown in these drawings, this walking type tiller is connected to a self-propelled vehicle and a rear part of a body frame 3 of the self-propelled vehicle by a pair of left and right driveable tire-type wheels 1 and 1. And a tillage device 10 according to the present embodiment.

  The vehicle body frame 3 includes a transmission case 4 having a pair of left and right axles 1a, 1a that can be driven, and an engine support frame 5 that extends from the upper part of the transmission case 4 toward the front of the vehicle body. is there. The self-propelled vehicle includes the pair of left and right wheels 1, 1, the engine 2 supported by the engine support frame 5, and a handle support portion 4 b provided continuously from the rear portion of the transmission case 4 toward the rear of the vehicle body. And an extended steering handle 7. The transmission case 4 introduces the output from the output shaft 2a of the engine 2 to the input shaft 4a via the main clutch 6 formed of a belt tension clutch, and the driving force of the input shaft 4a is located in the transmission case. (Not shown) is transmitted to the pair of left and right axles 1a, 1a.

  FIG. 3 is a longitudinal side view of the tillage device 10. As shown in this figure, the tilling device 10 includes a rotor driving case 11, a tilling rotor 12 that is rotatably supported on the lower end of the rotor driving case 11, and a tilling that covers the top of the tilling rotor 12. A rotor cover 13, a grounding resistance rod 14, a leveling plate 15, and a cultivator 20 are provided.

  The rotor drive case 11 is integrally formed with the transmission case 4 in a state of being connected to the rear portion of the transmission case 4 and constitutes a main frame of the tilling device 10. The rotor drive case 11 transmits the driving force of the input shaft 4a of the mission case 4 to the tilling rotor 12 by a work mission (not shown) located in the rotor drive case.

  The tilling rotor 12 includes a claw shaft 12a that is supported by the rotor drive case 11 so that the lower end of the rotor drive case 11 penetrates the vehicle body in a lateral direction, and the claw shaft is supported on both sides of the rotor drive case 11. 12a is provided with a plurality of tilling claws 12b that are arranged in the rotational axis direction and the circumferential direction so as to be integrally rotatable.

  The tilling rotor cover 13 includes a top plate 13 a located above the tilling rotor 12 and lateral plates 13 b located on both lateral sides of the tilling rotor 12. The pair of left and right lateral plates 13b, 13b are connected to the lateral ends of the top plate 13a.

  The grounding resistance rod 14 is fixed to the support member 30 by causing a lock pin 32 provided on the cylindrical portion 31 of the support member 30 connected to the rotor drive case 11 to act on the upper end side of the grounding resistance rod 14. The The grounding resistance rod 14 provides traveling resistance to the self-propelled vehicle so that the tilling rotor 12 can be plowed by grounding the lower end side of the grounding resistance rod 14 immediately after the rotor drive case 11.

  The lock pin 32 indicated by the solid line in FIGS. 4A, 4B, and 5 is a lock pin in a locked state. As described above, the lock pin 32 has the tip end portion of the lock pin 32 of the plurality of pin holes 14 a of the grounding resistance rod 14 by the sliding bias by the lock spring 34 located inside the pin holder 33 fixed to the cylindrical portion 31. When one of them is inserted, the grounding resistance rod 14 is locked to the cylindrical portion 31 so as not to slide. When the lock pin 32 is slid against the lock spring 34 and the tip of the lock pin 32 is removed from the pin hole 14a of the grounding resistance rod 14, the lock pin 32 is unlocked. In this case, as shown by a two-dot chain line in FIGS. 4 (A), 4 (B), and FIG. 5, a handle 35 connected to the lock pin 32 is rotated around the axis of the lock pin 32 to engage the locking piece. By being hooked on 36, the lock pin 32 can be held against the lock spring 34 in the unlocked state.

  FIG. 3 shows a cross section of the cultivator 20. FIG. 6 is a perspective view of the earthenware container 20. As shown in these drawings, the earthenware container 20 includes a frame body 21 and a earthing plate 22.

  The frame body 21 is formed of a bent sheet metal that is bent and formed so as to include an attachment portion 21a located at the lower end portion of the frame body 21 and a culture plate support portion 21b that rises upward from the rear end portion of the attachment portion 21a. It is. The cultivating plate support part 21 b supports the central part in the lateral direction of the cultivator at the lower end portion of the cultivating plate 22 by being connected by a connecting screw 23. The culture plate 22 is made of a rubber plate so as to be an elastic culture plate having elasticity and flexibility.

  As shown in FIGS. 3 and 6, the earthenware device 20 is detachably attached to the tilling device 10. That is, from this part to the part located in the inner side of the tilling rotor cover 13 of the grounding resistance bar 14, that is, the part located on the lower end side of the resistance bar from the resistance bar hole of the top plate 13a of the tilling rotor cover 13. An arm extending in the rearward direction of the tilling device is attached to provide a connecting portion 14c for attaching a cultivator, and the attaching portion 21a of the frame body 21 is detachably attached to the connecting portion 14c by a connecting bolt 24. At the rear end of the top plate 13 a of the tiller rotor cover 13, a culture plate support portion 17 having a plurality of bolt holes 17 a arranged in the horizontal direction of the top plate is provided, and the culture plate 22 is provided on the culture plate support portion 17. The upper end of the slab is detachably attached by a connecting bolt 25.

  The earthenware container 20 shown by a solid line in FIG. 6 is the earthenware container 20 in the operating state. A soil cultivator 20 indicated by a two-dot chain line in FIG. As shown in these drawings, the soil cultivator 20 moves behind the central portion of the tilling rotor 12 in the direction of the rotation axis by the pulling of the frame body 21 by the grounding resistance rod 14. Then, the upper end side of the cultivating plate 22 is supported by the tilling rotor cover 13 over the entire width of the cultivating plate 22, and the central portion on the lower end side of the cultivating plate 22 is supported by the frame body 21. The side portion 22a swings to the rear side of the tilling device by the ground reaction force from the cultivated soil, with the straight line L passing through the lateral end portion on the upper end side and the central portion on the lower end side as the swing axis. Forming action on cultivated soil while elastically deforming to the state. Thus, the earthenware 20 forms an upwardly extending intercostal groove at a position where the frame body 21 has moved, and forms an anchor A on both sides of the intercostal groove. When the tilling device 10 is lifted from the ground and the ground plate 22 is released from grounding, such as when the self-propelled vehicle is turning, the cultivator 20 is automatically restored to a non-working state in which the cultivating plate 22 is flat. To do.

  As shown in FIGS. 1 and 3, the leveling plate 15 is rotatably connected to the side plate 13 b of the tillage rotor cover 13 via a side plate 18 connected to both sides of the leveling plate 15. .

  The leveling board 15 shown with a dashed-two dotted line in FIG. 3 has shown the leveling board 15 in a downward use attitude | position. In this way, the leveling plate 15 descends around the same axis as the rotation axis of the tilling rotor 12, so that the leveling action portion 15 a formed by attaching the rubber plate to the lower end of the leveling plate 15 is provided. It is in a lowered use posture in contact with the ground. Then, the leveling plate 15 performs leveling operation flatly by the leveling action portion 15a after tilling by the tilling rotor 12.

  The leveling plate 15 indicated by a solid line in FIG. 3 indicates the leveling plate 15 in the ascending storage state. In this way, the leveling plate 15 rises around the axis so that a majority of the leveling plate 15 is in a raised storage posture in which the top of the top plate 13a of the tilling rotor cover 13 is located.

  As shown in FIGS. 1 and 3, the leveling plate 15 is provided with a locking tool 19 disposed on the upper end side of the leveling plate 15 so as to be disposed at the center portion in the horizontal direction of the leveling plate. The locking tool 19 is pivotally supported around the axis of the mounting shaft portion 19a located on one end side thereof, and is arranged in the vertical direction of the grounding resistance bar on the upper end side of the grounding resistance bar 14 as shown in FIG. Swinging is switched between an action posture in which the free end portion of the locking device 19 is engaged with one of the plurality of cutout portions 14b and a release posture in which the free end portion of the locking device 19 is disengaged from the cutout portion 14b. can do. The locking tool 19 is suspended and supported so that the ground leveling plate 15 does not fall into the raised storage posture from now on by being switched to the action posture. That is, when the earthenware device 20 is attached, the leveling plate 15 is held in the raised storage posture by the locking tool 19.

  As shown in FIGS. 1 and 2, the grounding resistance rod 14 includes an auxiliary wheel 40 attached to the upper end portion thereof. As shown in FIG. 9, the auxiliary wheel 40 includes an attachment member 42 having a lock pin 41. The attachment member 42 is attached to the upper end portion of the grounding resistance rod 14 by attaching the auxiliary wheel 40 to the upper end portion of the grounding resistance rod 14, or attached to the connecting portion 14c. Thus, the auxiliary wheel 40 is detachably attached to the lower end side of the grounding resistance rod 14. That is, the auxiliary wheel 40 supports the grounding of the rear end side of the tilling device 10 by changing from the upper end portion of the grounding resistance rod 14 to the connecting portion 14c on the lower end side when moving the self-propelled vehicle. At this time, the auxiliary wheel 40 is fixed to the connecting portion 14 c using the mounting member 42 and the lock pin 41.

FIG. 10 is a vertical side view of the tiller 20 having another implementation structure and the tilling device 10 having the tiller mounting structure. FIG. 11 is a plan view of the earthenware container 20 provided with another implementation structure and a connecting portion 14d provided with another implementation structure. FIG. 12 is a rear view of the cultivator 20 having another implementation structure. As shown in these drawings, the cultivator 20 includes a frame body 21 and a pair of left and right cultivating plates 22 and 22. The frame body 21 includes a mounting portion 21c on the front end side. Each of the culturing plates 22 is made of a metal cultivating plate 26 (hereinafter referred to as a metal cultivating plate 26) connected to the rear end side of the frame 21, and the metal cultivating plate 26 faces the cultivator backward. An extended elastic cultivating plate 27 and a shape retaining plate 28 connected across the metal cultivating plate 26 and the elastic cultivating plate 27 on the back side of the upper end of the cultivating plate 22 are provided. Each elastic earth plate 27 is made of a rubber plate so as to have elasticity and flexibility.

  The cultivator 20 is detachably attached to the tiller 10 as shown in FIG. That is, the pin hole 14d is formed in a portion of the grounding resistance rod 14 located on the inner side of the tilling rotor cover 13, that is, a portion of the grounding resistance rod 14 located on the resistance rod lower end side of the resistance rod hole of the top plate 13a. A connecting portion 14e for attaching a cultivator equipped with the above-mentioned is provided, and the attaching portion 21c is detachably attached to the connecting portion 14e by a connecting pin 29. The attachment portion 21c has a forked shape so that the grounding resistance rod 14 is sandwiched between a pair of connecting pieces. The attachment portion 21c suppresses the rotation of the earthing resistor 20 around the connection pin 29 with respect to the earthing resistance rod 14 by the contact with the earthing resistance rod 14 inside the attachment portion 21c.

  That is, the earthenware device 20 moves behind the central portion of the tilling rotor 12 in the direction of the rotation axis by the pulling of the frame body 21 by the grounding resistance rod 14. Then, the upper end side of each elastic culture plate 27 is supported by the shape retaining rod 28, and the inner end portion of the elastic culture plate 27 is supported by the metal culture plate 26. However, due to the reaction force from the cultivated soil, elastic deformation is performed in a state in which the straight line L passing through the outer end of the upper end portion and the inner end of the lower end portion of the elastic cultivating plate 27 swings to the rear side of the tilling device using the swing axis While acting on cultivated soil. As a result, the earthenware 20 forms an upwardly extending intercostal groove at a position where the frame body 21 and the metal earthing plate 26 have moved, and forms an anchor on both sides of the intercostal groove. When the tiller 10 is lifted from the ground and the ground plate 22 is released from grounding, such as when the self-propelled vehicle is turning, the cultivator 20 is in a non-working state in which each elastic cultivating plate 27 is flat. Restore itself.

12 Tilling Rotor 13 Tilling Rotor Cover 14 Grounding Resistance Rods 14c, 14e

Claims (2)

A tilling device comprising a tilling rotor and a tilling rotor cover that covers the top of the tilling rotor,
A grounding resistance rod that passes through the tilling rotor cover in the vertical direction and passes the rear side of the tilling rotor in the vertical direction;
A top plate is supported by the rear end portion of the tillage rotor cover across the width direction, and a bottom plate is made of a rubber plate that hangs down behind the tillage rotor and the grounding resistance rod, and
The culture plate support that supports the central portion of the bottom plate in the lateral direction of the culture plate so as to suppress the backward movement due to the reaction force of the lower end portion of the culture plate and maintain the culture plate in the working state. A tilling device provided with a section.   The tillage according to claim 1, further comprising an auxiliary wheel that can be fixed at a use position where the grounding action is performed at a position lower than a lower end of the cultivating board support portion and a storage position located at a higher arrangement height than the use position. apparatus.

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