JP2005065539A - Supporting mechanism for rear cover in rotary tillage apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting mechanism for a rear cover in a rotary tillage apparatus for freely demountably mounting the rear cover on the machine body. <P>SOLUTION: The supporting mechanism 16 for supporting the rear cover 17 covering the rear side of a rotary 8 for tillage is provided on the side of the machine body 10 of the rotary tillage apparatus. The supporting mechanism 16 is composed of a cover supporting body 25 on the side of the rear cover 17 and bracket parts 27 on the side of the machine body 10. The cover supporting body 25 and the bracket parts 27 are freely demounted and the rotary 8 is composed of the rear cover 17 and a main cover 14 covering the upper side of the rotary 8. The bracket parts 27 are composed so as to carry out freely demountable mounting of supporting bodies 35 for an implement on the side of the implement A performing operation on tillage soil. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a support mechanism for a rear cover in a rotary tiller.

Conventionally, a rotary cover that covers a rotary for rotary includes a main cover that covers an upper side of the rotary and a rear cover that covers a rear side of the rotary, and the rear cover is arranged so as to be rotatable up and down behind the main cover. An apparatus is known (see, for example, Patent Document 1).
JP-A-11-289806

  The rotary tiller can be used with a work machine that does not require a rear cover, such as a shaper for shaping a reed, for example. When the work machine is attached, as shown in FIG. When the rear cover is in a normal state, the work machine a is hindered. Therefore, the rear cover b is flipped up to maintain the raised state, and the work machine is made into a tool bar d by a support mechanism c that avoids the rear cover b. In addition to the disadvantage that the processing of the rear cover b is troublesome and the shape of the support mechanism c is complicated, the rear cover b hinders the work implement from being installed at a more suitable position for the work. There was a drawback that there was.

  The support mechanism for the rear cover in the rotary tiller of the present invention for solving the above-mentioned problems is that the rotary cover 13 covering the rotary rotary 8 has a main cover 14 covering the upper side of the rotary 8 and the rear side of the rotary 8. And a rear cover 17 that covers the rear cover 13 so that the rear cover 13 can be pivoted up and down at the rear of the main cover 14. A support mechanism 16 that supports the rear cover 17 is provided on the body 10 side of the rotary tiller. The mechanism 16 includes a cover support body 25 on the rear cover 17 side and a bracket portion 27 on the machine body 10 side, and the cover support body 25 and the bracket portion 27 are detachable.

  A second feature is that the bracket portion 27 is configured such that the work implement support 35 on the work implement A side that performs work on the tilled soil can be detachably attached.

  According to the structure of the present invention configured as described above, the rear cover can be easily removed from the rotary tiller by separating the cover support and the bracket portion, such as a shaper for shaping a ridge, etc. When using a work machine that does not require a rear cover, the work machine can be easily attached by removing the rear cover, and there are less restrictions on the installation position of the work machine. The work machine is attached to the work machine, and the work by the work machine can be easily and effectively performed.

  In particular, by constructing the work implement to be attached to the rotary tiller side using the bracket portion, there is no need to provide a separate attachment portion for the work implement, and the rotary tiller device with the rear cover removed is replaced with a rear cover. There exists an advantage that the said working machine etc. can be attached easily.

  1 and 2 are a side view and a plan view of a rotary tiller employing the rear cover support mechanism of the present invention. The rotary tiller 1 is a conventionally known one that is connected to the rear of a tractor (not shown) and performs a field work as the tractor travels. A pipe frame 3 is connected from a gear case 2 to which PTO power is input from the tractor side. Projected to the left and right.

  A chain case 4 is integrally attached to one (left) outer end portion of the pipe frame 3 and a side frame 6 is integrally attached to the other (right) outer end portion to constitute a body frame 7. A machine body 10 of the rotary tiller 1 is configured based on the machine body frame 7.

  At this time, the chain case 4 and the side frame 6 are both extended downward, and the tilling rotary 8 can be rotatably driven between the side frame 6 and the lower part of the chain case 4 as in the prior art. It is supported.

  With the structure described above, the driving force input to the gear case 2 is transmitted to the rotary 8 via the chain case 4, whereby the rotary 8 is rotationally driven to perform the farming work on the field. A top mast 12 comprising a pair of left and right plates 12a and 12b is attached to the upper part of the gear case 2, and the front end portion of the top mast 12 is a connecting point between the rotary tiller 1 and the tractor as in the prior art. It has become one.

  On the other hand, a rotary cover 13 that covers the rotary 8 is provided on the side of the machine frame 7 of the rotary tiller 1, and the rotary cover 13 is provided between the chain case 4 and the side frame 6. A main cover 14 that covers the upper side, and a rear cover 17 that is attached to the rear of the main cover 14 via a support mechanism 16 and covers the rear side of the rotary 8 are provided.

  The main cover 14 has a structure in which a side plate 14b is attached to both left and right ends of the top plate 14a with a top plate 14a having an arc shape in a side view as a base body. The lower ends of both side plates 14b are supported by the chain case 4 or the side frame 6 so as to be rotatable about the rotation axis of the rotary 8, so that the main cover 14 is centered on the rotation axis of the rotary 8. Is supported rotatably.

  The main cover 14 includes a plurality of (three in this embodiment) operation levers (not shown) protruding from a lever guide 23 formed on the plate 12 a of the top mast 12. By engaging and positioning with any one of the joint portions 23a, 23b, and 23c, the rotational position is switched stepwise. In this embodiment, the foremost rotation position (normal tillage position), the rearmost rotation position (shallow tillage position), and the foremost and rearmost rotation position (intermediate tillage position). The rotation position can be switched to three stages.

  On the other hand, pipe-like slide brackets 27 are fixed in the front-rear direction on both the left and right sides of the top surface of the top plate 14a, and a slide rod 28 is inserted into the slide bracket 27 so as to be slidable in the front-rear direction. The slide bracket 27 is provided with a plurality of positioning holes 29 in the sliding direction. By inserting a pin or the like through the pin hole 31 formed in the slide rod 28 and inserting the pin into the positioning hole 29, the slide bracket 27 is provided. The position of the slide rod 28 with respect to 27 can be adjusted and fixed. Further, the slide rod 28 can be detached from the slide bracket 27 by removing the slide rod 28 from the slide bracket 27.

  A lateral frame 32 in the left-right direction is fixed to the rear ends of the slide rods 28. Further, brackets 33 are provided on both the left and right sides of the lateral frame 32 so as to protrude downward, and a cover support 25 for attaching the rear cover 17 is formed. The rear cover 17 is pivotally supported by the bracket 33 of the cover support 25 via a fulcrum shaft 18 so as to be rotatable. The rear cover 17 is suspended from the horizontal frame 32 by a rod 34 provided between the horizontal frame 32 and the upper surface of the rear cover 17. Further, the cover support 25 and the slide bracket 27 are detachable by detaching the slide rod 28 from the slide bracket 27, that is, the cover support 25 is detachable from the machine body 10.

  As described above, the rear cover 17 is attached to the main cover 14 via the support mechanism 16 including the left and right slide brackets 27 serving as bracket portions and the cover support 25, and the main cover 14 is rotated by the operation lever 24. Sometimes, the rear cover 17 swings integrally with the main cover 14 and rotates about the fulcrum shaft 18 with respect to the main cover 14 to level the farm field.

  Then, by adjusting the position of the slide rod 28 with respect to the slide bracket 27 and moving the position of the rear cover 17 (rotation fulcrum position), the space formed at the front and rear positions of the rear cover 17 and the rear side of the rotary 8 is increased. Thus, the range of tillage depth at which smooth work can be performed is expanded, and it becomes possible to respond to various fields and work contents without exchanging the rear cover 17 and the rotary 8.

  On the other hand, the rear cover 17 can be easily removed from the rotary tiller 1 as shown in FIGS. 3 and 4 by removing the slide rod 28 from the slide bracket 27 and removing the cover support 25 from the body 10. It is. For this reason, as shown in FIGS. 5 and 6, by providing a work implement support 35 having a slide rod 28 that can be inserted into and removed from the slide bracket 27 to a work implement A that does not require the rear cover 17 at the time of work, The work implement A can be easily attached by removing the rear cover 17 from the rotary tiller 1 and inserting and positioning the slide rod 28 of the work implement support 35 in the slide bracket 27.

  For example, the working machine A is a shaper for shaping the hook, and the slide hook 28 is inserted into the slide bracket 27 by providing the slide hook 28 on the working machine support 35, and the slide hook 28 is inserted with a pin or the like as described above. The positioning device (working machine A) is used in place of the rear cover 17 in the rotary tiller 1 with the rear cover 17 removed, without the need to change the posture of the rear cover 17 such as flipping up. Easy to install.

  Thereby, the rear cover 17 can be smoothly shaped by the shaper without obstructing the rear cover 17, and in particular, the front-rear position of the shaper relative to the rotary 8 can be easily adjusted, and the shaper is close to the rotary 8. Therefore, the formability can be improved. Further, since the mounting structure of the shaper to the rotary tiller 1 is only the slide rod 28, the mounting structure can be simply configured, and the shaper structure can be simplified.

  On the other hand, on the upper side of the slide bracket 27, a left and right support rod 36 made of a square pipe is attached to the rear side of the gear case 2, and the support rod 36 has a subsoiler 37 for crushing subsoil. A holder 38 is attached so that the left and right positions can be adjusted.

  As a result, the position of the rear cover 17 is adjusted to the rear side, and a relatively large space is provided between the rear cover 17 and the rotary 8, so that the subsoiler 37 can be easily adjusted in the left-right position between the rear cover 17 and the rotary 8. In particular, the subsoiler 37 performs subsoil crushing work at the same time as the plowing work during deep plowing work, softens the soil in the cultivating part, forms a cultivating groove, and provides a well-drained field. It is possible to promote the healthy growth of crops by draining residual fertilizer components in the vicinity of cultivation and cultivation.

  The slide bracket 27 may be provided on the body frame 7 side. In this case, the rear cover 17 does not swing integrally with the swing of the main cover 14, but a smooth tillage operation can be performed by adjusting the position of the rear cover 17 alone.

  The support mechanism for the rear cover can be employed in a rotary tiller of the type in which the main cover 14 is fixed to the body frame 7 side. In this case, the slide bracket 27 can be provided on the top plate 14 a of the main cover 14 or the body frame 7 side.

It is a side view of the rotary tiller with the rear cover attached. It is a side view of the rotary tiller with the rear cover attached. FIG. 3 is a side view of the rotary tiller with the rear cover removed. FIG. 3 is a side view of the rotary tiller with the rear cover removed. It is a side view of the rotary tiller in the state where the working machine (shaping device) was attached. It is a side view of the rotary tiller in the state where the working machine (shaping device) was attached. It is a side view of the rotary tiller in a state where the rear cover is flipped up and a work machine (shape device) is attached.

Explanation of symbols

8 Rotary 10 Airframe 13 Rotary cover 14 Main cover 16 Support mechanism 17 Rear cover 25 Cover support 27 Slide bracket (bracket part)
35 Working machine support A Working machine (Shaping device)

Claims (2)

  The rotary cover (13) covering the rotary rotary (8) includes a main cover (14) covering the upper side of the rotary (8) and a rear cover (17) covering the rear side of the rotary (8), In the rotary tiller in which the rear cover (13) is arranged to be rotatable up and down behind the main cover (14), a support mechanism (16) for supporting the rear cover (17) is provided on the machine body (10) side of the rotary tiller. The support mechanism (16) includes a cover support (25) on the rear cover (17) side and a bracket part (27) on the airframe (10) side. The cover support (25) and the bracket part (27) Support mechanism for the rear cover in a rotary tiller that can be attached and detached. The rear cover of the rotary tiller according to claim 1, wherein the bracket portion (27) is configured so that the work implement support (35) on the side of the work implement (A) performing work on the tillable soil can be detachably attached. Support mechanism.

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