JPS6224403Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a frame structure of a mobile tillage device in which a movable frame equipped with a rotary claw shaft is moved left and right relative to a main frame.

The above-mentioned mobile tillage equipment has a frame structure in which the movable frame is attached to the main frame so that it can move left and right, and since it is not possible to connect and fix the entire frame together, it is necessary to frame the entire frame by connecting and fixing it. In particular, the movable frame side is susceptible to twisting or local bending due to the load received from the rotary claw shaft and other mechanisms installed on it. In addition, the sliding fitting portion that engages with the main frame often twists, impairing smooth operation.

Therefore, although the present invention is a mobile tillage device consisting of a main frame and a movable frame that is attached to the main frame so as to be able to move left and right, the entire frame is constructed extremely strongly, and the position change operation of the movable frame side is always possible. To provide a frame structure that allows for smooth operation.

That is, the present invention provides the left and right holding cylinders 3 and 4 of the main frame FF fixedly connected to the tractor body T.
The cylindrical arms 14 and 24 of the movable frame RF are fitted so as to be slidable in the axial direction, and the movable frame is positioned in the left-right direction by a displacement drive mechanism interposed between the main frame and the movable frame. By moving,
In a tillage device configured so that the left and right positions of a rotary claw shaft 18 supported at the bottom of a movable frame can be changed and adjusted, connecting plates 25, 25 are provided rearwardly extending from both upper left and right ends of the movable frame RF. These connecting plates are connected by a reinforcing connecting body 28, and connecting plates 25,
Pivot bodies 29, 29 are provided rearwardly extending from the left and right holding cylinders 3, 4 of the main frame at the side of the frame 25, respectively, and the reinforcing connecting body 28 is supported by these pivot bodies 29, 29. It is characterized in that the base pipe of the depth gauge mechanism G is fitted and attached to the wide reinforcing joint between the pivots 29, 29.

Next, specific examples shown in the drawings will be explained in detail.

R indicates the entire tillage device, which is attached to the tractor body T so as to be able to be raised and lowered by a three-point linkage mechanism 1 formed by a top link, a lower link, a lift arm, etc.

FF is the main frame of this tillage device R,
The left and right holding cylinders 3 and 4 of a predetermined length are attached to the left and right sides of the input case 2, respectively, and the connecting parts 5 and 6 and the connecting part 7 installed on the holding cylinders are connected to the three-point link mechanism 1 described above. It is attached to the tractor body T by connecting it to the lower link and top link of the tractor body T.

The input case 2 supports a vertical input shaft 8 and a passive shaft 9 orthogonal thereto, and both shafts 8 and 9 are interlocked by meshing bevel gears 10 and 11.
Further, the input shaft 8 is connected to the PTO shaft of the tractor body T by a universal joint 12 at the outside protrusion of the case, and one end of the passive shaft 9 is connected to the left holding cylinder 3.
It is forced to extend inside.

The left holding cylinder 3 of the main frame FF includes a mounting body 3a that also serves as a bearing housing, a support part 3b, and a
It is formed by a pipe part 3c connecting between a and 3b,
The right holding cylinder 4 includes a mounting body 4a which also serves as the right end bearing housing of the input case 2, a mounting body 4b fitted with a spigot on the outer side of the mounting body 4a, and a support portion 4c at the outer end.
It consists of a pipe section 4b that connects the mounting body 4b and the support section 4C, and these holding cylinders 3 and 4 will be hereinafter referred to as a sleeve.

A cylindrical arm 14 extending from the upper end of a drive case 13 of a movable frame RF, which will be described later, is fitted into the left sleeve 3 of the main frame FF so as to be able to slide in the direction of the axis P. A rotating shaft 15 supported by the drive case 13 is protruded from inside the cylindrical arm 14 at a portion where the sleeve 3 and the cylindrical arm 14 fit together, and a rotation shaft 15 is provided between the shaft 15 and the protruding portion of the driven shaft 9. are integrally rotated in the rotational direction by the telescopic transmission part 16, and are interlocked and connected so that they can slide within a predetermined range in the axial direction.

The lower end of the drive case 13 rotatably supports one end of a rotary shaft 18 having tilling claws 17 implanted on its outer periphery, and a sprocket 19 fitted into the inner part of the drive case 13 and the rotary shaft 18 are rotatably supported. The rotary shaft 18 is driven by interlocking the winding of a chain 21 between the shaft 15 and a sprocket 20 fitted thereto.

The other end of the rotary shaft 18 is rotatably supported by a bracket 29 at the lower end of a support 22 installed corresponding to the drive case 13. A cylindrical arm portion 24 protruding toward the case 2 side is provided, and this cylindrical arm portion 24 is fitted into the inner diameter of the right sleeve 4 of the main frame FF so as to be able to slide in the direction of the axis P. A hydraulic actuating device A, which is a displacement drive mechanism, is housed inside this fitting portion.

Connecting plates 25, 25 extend from the upper inner parts of the drive case 13 and the support body 22, and the axis between these extending parts is aligned with the axis of the sliding fitting part between the sleeve and the cylindrical arm part. A reinforcing connection body 28 that is attached to the support 26 with a bolt 27 at a position P' appropriately eccentric with respect to P.
This reinforcing connector body 28 is connected from the center of the half width of the device to the connecting plates 25, 25.
Pivot bodies 29, 29 extending from the main frame FF side at the side portions are supported and connected in such a way that sliding in the axial direction is possible and movement in the rotational direction can be prevented.

That is, the drive case 13 that supports the rotary claw shaft 18 and the support body 22 are connected by the reinforcing connector 28 to form an integral frame structure, and are made into the movable frame RF. The sleeves 3 and 4 of the main frame are slidably mounted, and the reinforcing connection body is made movable only in the axial direction and is connected to the main frame FF side. The movable frame RF is configured so that its position in the left and right direction can be changed while maintaining the
Install the base of the depth gauge mechanism G between 29,
Furthermore, a rotary cover 30 and the like are installed on the movable frame.

Note that 31 is a cylinder tube of the hydraulic operating mechanism A, 32 is a mounting bracket, 33 is a piston rod, and 34 is a connecting portion that connects the piston rod to the movable frame.

Next, to explain the operation of the device of the present invention, the raising and lowering of the tilling device R is performed by the operation of the three-point linkage mechanism 1, and the height of the device from the ground during work is set by adjusting the depth gauge mechanism G. It is. The power transmitted from the PTO shaft of the tractor body T to the input shaft 8 is transmitted to the passive shaft 9 and the telescopic transmission section 1.
6. Through the rotation shaft 15, the sprocket 19, 2
0. Through the chain 21, the information is transmitted to the rotary claw shaft 18, which rotates the shaft 18 and operates the tilling claws 17 group to perform the tilling work.During normal tilling work, the hydraulic operating mechanism A is not activated. Instead, the rotary pawl shaft 18 is kept at a predetermined position in the center of the tractor body T in the width direction.

Next, in a place where an obstacle such as a ridge is located on the right side of the tractor body T, when plowing work is to be carried out in close proximity to this obstacle, the valve mechanism connected to the hydraulic actuation mechanism A is operated and the piston rod is 33 is made to extend to the right, the support body 22 connected thereto, that is, the movable frame RF
is moved to the right.

Therefore, the cylindrical arm portion 24 slides and extends within the sleeve 4, and the reinforcing connector 28 and the rotary claw shaft 1
8. The drive case 13 that supports one end of the rotary claw shaft is also moved to the right.
At this time, the right cylindrical arm portion 14 operates in the direction of contracting the inside of the sleeve 3, and the transmission telescopic portion 16 also slides and contracts while maintaining the transmission state and moves. The machine protrudes from the right side of the main frame and operates, allowing safe plowing of areas close to obstacles without leaving nearly any uncultivated land.

Contrary to the above, if you want to approach the area where the obstacle is on the left side of the machine T, by switching the valve mechanism in the opposite direction to the above and moving the piston rod 33 to the left, the movable frame RF will be able to operate in this manner. The rotary claw shaft 18 supported by the rotary claw shaft 18 is moved to the left by the rotary claw shaft 18, and the rotary claw shaft 18 supported by the rotary claw shaft 18 is operated to protrude to the left side of the machine body T. This means that almost all areas can be cultivated safely without leaving any uncultivated land.

As is clear from the above description, in the present invention, the connecting plates 25, 25 are extended from both left and right ends of the upper part of the movable frame RF in the mobile poop device, and the connecting plates 25, 25 are connected by the reinforcing connecting body 28. , the reinforcing connection body 28 is pivoted to the main frame FF by the pivot supports 29, 29 at a position closer to the connection plates 25, 25 than the center of the half width of the device, and
Depth gauge mechanism G in the wide reinforced connection part between 9
The movable frame RF, which is attached by fitting the cylindrical arms 14 and 24 into the left and right holding cylinders 3 and 4 of the main frame, respectively, is configured to be attached by fitting the base pipes of the main frame into the main frame in the assembled state. The frame is constructed in a rectangular shape by the frame, the left and right connecting plates, and the reinforcing connecting body, and is connected and reinforced by the pivot supports 29, 29 at points near each connecting plate, making it extremely strong against torsional loads, etc. Therefore, the sliding fitting portion between the main frame and the cylindrical arm portion and the sliding fitting portion between the reinforcing connection body and the pivot body can always move smoothly and easily from side to side without twisting.

Furthermore, a pivot body 29 that pivots the reinforcing connection body 28,
29 is extended from near both ends of the left and right holding cylinders 3 and 4 of the main frame, and the base pipe of the depth gauge mechanism G is fitted and attached to the wide reinforcing joint part between the two pivot supports 29 and 29. Even if the base of the depth gauge mechanism is formed to be long in the axial direction, it is possible to secure a predetermined horizontal movement stroke of the device. Therefore, the base can be made wide and firmly supported by the reinforcing connector, and the wide base can be made wide. The mounting portion can disperse the load applied to the reinforcing connector from the depth gauge mechanism, prevent the load from locally concentrating on the reinforcing connector, and prevent the reinforcing connector from bending. Overall, we were able to achieve extremely smooth operation and a sturdy frame structure.

[Brief explanation of the drawing]

The drawings show a specific example of the present invention; Fig. 1 is a side view of a tilling device implementing the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is an enlarged side view of essential parts of the tilling device according to the present invention. , FIG. 4 is a developed cross-sectional view of FIG. 3. 1... Three-point linkage mechanism, 2... Input case, 8
... Input shaft, 9 ... Passive shaft, 13 ... Drive case, 18 ... Rotary claw shaft, 22 ... Support body, 2
5... Connection plate, 28... Reinforcement connection body, 29... Axial support, T... Tractor body, R... Rotary tillage device, FF... Main frame, RF... Movable frame, A... Hydraulic operation mechanism.

Claims (1)

[Scope of utility model registration request] The cylindrical arms 14 and 24 of the movable frame RF are fitted into the left and right holding cylinders 3 and 4 of the main frame FF, which are fixedly connected to the tractor body T, so as to be able to slide in the axial direction. In a tilling device configured such that the horizontal position of a rotary claw shaft 18 supported at the bottom of the movable frame can be changed and adjusted by moving the movable frame in the left-right direction by a displacement drive mechanism interposed between the movable frame and the movable frame. Connecting plates 25, 25 are extended rearward from both upper right and left ends of the movable frame RF, and these connecting plates are connected by a reinforcing connecting body 28, and connecting plates 25, 25 are connected from the center of the half width of the device. Pivot bodies 29, 29 are provided rearwardly extending from the left and right holding cylinders 3, 4 of the main frame at the side areas, and the depth gauge mechanism G is attached to the reinforcing joint body portion by these pivot bodies 29, 29. A frame structure of a mobile tillage device, characterized in that a base pipe is fitted and attached.