JP4551147B2 - Rotary tillage machine - Google Patents

Description

  The present invention relates to a rotation amount display of a main cover of a rotary tiller working machine.

  When a rotary tiller is connected to the tractor to perform tillage work, the conventional machine (see Fig. 1) related to the rotary tiller is a three-point link with one top link and two lower links behind the tractor. A mast 4 is provided above the bevel gear box 1 disposed in the upper center portion, and extends from the bevel gear box 1 to the left and right sides. A support plate 5 is fixed to each middle portion of the main beam 3, and the rear end of a top link (not shown) is pivotally supported at the front end of the mast 4. The rear end of a lower link (not shown) is supported at the front end of each support plate 5. Are pivotally supported.

  The top link and each lower link are linked to a hydraulic device, and the rotary tiller is moved up and down by the hydraulic device. A depth frame 6 is pivotally supported at the rear end of each support plate 5. Further, the PTO shaft (power take-off shaft) of the tractor is connected to the input shaft 2 protruding from the bevel gear box 1 via a drive shaft with a universal joint (not shown), and the power from the PTO shaft is transmitted to the input shaft 2. It has become so.

  A bevel gear group is provided in the bevel gear box 1, a chain case 7 is attached to the end of the main beam 3 extending from the bevel gear box 1 to one side, and the end of the main beam 3 extending to the other side. The side frame 8 is attached to. A rotary tillage claw shaft 9 is pivotally supported between the lower portion of the chain case 7 and the lower portion of the side frame 8 via bearings.

The chain case 7 includes a chain transmission mechanism including an input sprocket, a chain, an output sprocket, and the like. The input sprocket is fixed to a transmission shaft 11 that transmits the gear output of the bevel gear group, and the output sprocket is a rotary tillage claw shaft 9. It is fixed to the output sprocket shaft linked to.
In this manner, the rotary tilling claw shaft 9 is driven to rotate by the power from the PTO shaft of the tractor via the input shaft 2, the bevel gear group, the transmission shaft 11, the chain transmission mechanism, and the like. A plurality of tilling claws 12 are radially attached to the rotary tilling claw shaft 9 to constitute a tilling portion 13.

A main cover (rotary cover) 14 that covers the top of the tillage part 13 is provided immediately above the tillage part 13.
The main cover 14 is fixed to the inner side of the chain case 7 and the side frame 8 at both side plate portions by bolt fastening or the like (not shown).
A front cover 15 that covers the front of the tilling unit 13 is attached to the stay 16 extended from the main beam 3 by bolt fastening in front of the main cover 14.
A rear cover 10 that covers the rear of the tillage unit 13 is attached to the rear of the main cover 14 so as to be swingable in the vertical direction by a hinge (not shown).

  A rear side cover 19 is fixed to the left and right sides in the vicinity of the lower end portion of the rear cover 10 by bolt fastening. Reference numeral 20 denotes a side under cover that moves up and down in conjunction with the rear cover 10.

  By the way, in such a conventional rotary tiller, the part for displaying the amount of rotation of the main cover (rotary car) 14 is on the main cover (rotary cover) 14, but is relatively far from the operation part. Since the tillage work was a battle with the soil, it was difficult to see the display part and it was necessary to improve it.

In order to achieve the above object, the invention according to claim 1 is characterized in that the main cover is rotatable with respect to the tilling part of the rotary tiller and the driving part such as the upper bevel gear box, and the main cover is rotated. The telescopic rod is interposed between the drive unit and the main cover, and the telescopic rod is expanded and contracted by a handle at the upper end of the telescopic rod. In the rotary tillage work machine that is provided and displayed,
The telescopic rod includes an indication nameplate having a plurality of scales, and an indication needle pointing to the indication nameplate,
The indicator needle is fixed to the telescopic rod, the tip of the indicator needle is bent inward to form a bent portion,
The bent portion indicates a scale of the indicating nameplate corresponding to the amount of expansion / contraction of the telescopic rod .

The main cover is rotatable with respect to the plowing part of the rotary tiller and the driving part such as the upper bevel gear box, and the main cover is rotated with an extendable rod interposed between the driving part and the main cover. by, perform stretching by a handle at the upper end of the telescopic rod, rotation state of the main cover, in a rotary tilling device that displays by providing a nameplate with rotating scale on the main cover, the telescopic rod, a plurality of graduations The indicator nameplate having the indicator namepiece and the indicator needle pointing to the indicator nameplate are fixed to the telescopic rod, and the tip of the indicator needle is bent inward to form a bent portion, and the bent portion expands and contracts. Since it indicates the scale of the indication nameplate according to the amount of expansion and contraction of the rod, an indication nameplate can be provided around the handle operating position, making it easy to grasp the amount of rotation of the main cover. . Moreover, since the scale is located at a position away from the main cover, contamination due to tillage work can be avoided, and the display is clear and easy to see. Moreover, since the bent part is fixed to the telescopic rod, it can be used stably without falling.

Embodiments of the present invention will be described below.
1 and 2 show a first embodiment of the present invention. A main cover (rotary cover) 14 is rotated with respect to a main beam 3, a depth frame 6, a chain case 7 and the like (hereinafter referred to as a fixed portion). It is configured to be movable, and can be adapted to various work using a rotary by turning. In the rotary rotation mechanism 30, a support rod 32 is laterally provided from the mast 4, and a right and left target standing support 34 is provided on the main cover 14, and a pin 36 is provided above the standing support 34. Is supported. A telescopic rod 38 is pivotally mounted on the pin 36, a handle 40 is provided at the upper end of the telescopic rod 38, and the upper portion of the telescopic rod 38 is fixed by the support rod 32. Yes. Then, by rotating the handle 40, the telescopic rod 38 expands and contracts, and the main cover (rotary cover) 14 rotates with respect to the rotary tillage claw shaft 9 with respect to the fixed portion. Become.

By rotating the handle 40, the rotary tiller can perform four types of work: deep plowing → plowing → shallow plowing → sparing. As a substitute, the main cover 14 moves forward by extending the telescopic rod 38, the rotary becomes the front center of gravity, and the digging depth becomes shallow (see FIG. 3A). On the contrary, deep plowing contracts the telescopic rod 38, so that the main cover 14 is moved backward, the rotary becomes the rear center of gravity, and the digging depth is increased (see FIG. 3B). The middle is shallow plowing.
Reference numeral 50 in FIG. 2 denotes a nameplate with a rotation scale that indicates which work is suitable for the position of the main cover 14 changed by the rotation of the handle 40. On the nameplate 50 with the rotary scale, the indicator needle 52 indicates which of the above-described work is the perforation, shallow tillage, tillage, and deep tillage (see FIG. 4). Note that an alignment mark whose position can be digitally displayed may be displayed. The operator looks at the position display of the pointing needle 52 of the rotation position display unit 50, knows the installation information of the main cover 14, corrects the handle 40, and can perform the optimum work. The handle can be operated manually, but a structure that moves electrically may be used.

  An alarm 54 (see FIG. 1) is provided on the nameplate 50 with a rotation scale, and the main cover 14 is provided with a rotation scale at the rotation positions of the above-mentioned individual bills, shallow tillage, tillage and deep tillage. When the indicating hand 52 of the nameplate 50 comes, an alarm sound or the like that indicates each work position is sounded. The alarm sound may be different depending on each rotation position. For example, you may sound the melody corresponding to each rotation position. Thus, it is possible to slightly shift the rotation position with reference to the alarm sound during the work.

  In FIG. 4A, the wiping device 56 for the nameplate 50 with the rotation scale is provided on the indicating needle 52 of the nameplate 50 with the rotation scale. Since the indicating needle 52 and the wiping device 56 are fixed, the surface of the nameplate 50 with the rotation scale can be cleaned by the rotation of the main cover 14. FIG. 4B shows an embodiment different from that shown in FIG. 4A, in which the wiping device 56 substitutes the indicator needle 52. The wiping device 56 can be moved up and down by a long hole 58.

FIG. 5A shows the amount of rotation of the main cover 14 by providing an indication nameplate 60 on the telescopic rod 38 for the rotation position display. As shown in FIG. 5 (B), the indicator needle 62 is plate-shaped, the lower part is semicircular and the hole 64 is provided, and the upper part is provided with a bent part 66 on the inner side. The pin 36 is fitted in the hole 64 of the indicating needle 62.
Then, as shown in FIG. 6, the portion indicated by the bent portion 66 on the upper side of the indicating needle 62 moves up and down in the indicating nameplate 60 in proportion to the expansion / contraction amount of the expanding / contracting rod 38. Thereby, the amount of rotation of the main cover 14 is indicated, the position of the main cover 14 can be displayed, and the same function as the nameplate 50 with the rotation scale is achieved.
In FIG. 6, (A) shows a state in which the amount of rotation is small, the center of gravity of the rotary tiller is behind, and the depth of tilling is deep, and (C) shows that the amount of rotation is large and the center of gravity is large. It comes before and shows the state where the depth of tillage is shallow. (B) is intermediate between (A) and (C).
In this manner, when the indication nameplate 60 is provided on the telescopic rod 38, a display indicating the rotation position of the main cover can be provided around the operation position of the handle, so that the amount of rotation can be easily grasped. In addition, since the position is difficult to get dirty as compared with the nameplate 50 with the rotary scale, the display is easy to see.

  In FIG. 2 of the present invention, a circular level 70 is provided on the outer surface of the main cover 14, and the level is centered on a small circular optimum posture range 72 as shown in FIG. The cross 74 is drawn so as to pass through the center. Bubbles 76 are sealed in the circular level 70, and the main cover 14 is horizontal when the bubbles 76 come to the cross at the center. In this way, it is necessary to keep the rotary tiller working machine absolutely level regardless of the working depth, and adjust the rotation each time so that the posture of the main cover (rotary cover) and the rear cover is constant. If it does, it will become an optimal posture and the finish of work will become good. Conversely, when the finish is good, it can also be used to find out the cause.

  FIG. 7B is a modified embodiment of the level of FIG. 7A, and the level 80 itself has a horizontally long shape. A double line 82 is vertically displayed near the center. If the bubble 84 enters this double line, it can be said that it is at least horizontal. The level 80 is horizontally long, and therefore it is difficult to level the moving direction of the rotary tiller, but the horizontal level of the rotary tiller is easy to measure. Therefore, the lateral finish is good.

  The present invention is not limited to the above embodiments. Further, the embodiments described above may be combined and implemented as long as the object of the present invention is not violated.

The left view of the rotary tillage working machine which is embodiment of this invention. 1 is a partial plan view of the rotary tiller of the same type as in FIG. 1 (however, the position of the nameplate 50 with a rotary scale is different from that in FIG. 1). Explanatory drawing explaining the inclination of the rotary tiller due to the rotation of the main cover (A is shallow tillage, B is deep tilling) A and B are explanatory drawings of other embodiments of the nameplate 50 with a rotary scale. A is an explanatory view of an embodiment in which an indicating needle 62 is provided on the telescopic rod 38, and B is a front view (rightward) and a side view (leftward) of the indicating needle 62. A, B, and C are front views showing a state in which the positional relationship between the telescopic rod 38 and the indicator needle 62 is changed by the rotation state of the main cover. A and B are explanatory views showing an embodiment in which a level is provided on the main cover.

Explanation of symbols

14 Main cover 38 Telescopic rod 40 Handle 50 Rotating scale nameplate 54 Alarm 60 Instruction nameplate

Claims (1)

The main cover is rotatable with respect to the plowing part of the rotary tiller and the driving part such as the upper bevel gear box, and the main cover is rotated with an extendable rod interposed between the driving part and the main cover. The rotary state of the main cover is expanded and contracted by the handle at the upper end of the telescopic rod, and the rotary state of the main cover is displayed on the main cover by providing a name plate with a rotary scale on the main cover.
The telescopic rod includes an indication nameplate having a plurality of scales, and an indication needle pointing to the indication nameplate,
The indicator needle is fixed to the telescopic rod, the tip of the indicator needle is bent inward to form a bent portion,
The rotary tiller is characterized in that the bent portion indicates a scale of the indicating nameplate corresponding to the amount of expansion / contraction of the telescopic rod .

Images