JP2012029574A5 - - Google Patents

Description

Walk-type field cultivator

  The present invention relates to a walking type tiller.

  Patent Document 1 describes a technique in which a pair of left and right cultivating plates are attached to each of a pair of left and right moving wheel supports to switch between a cultivating work position and a non-cultivating position.

JP2009-183235

  In Patent Document 1, it is troublesome to switch between a pair of left and right cultivating plates to set the cultivating work position and the non-cultivating work position. The present invention aims to solve such problems.

In order to solve this technical problem, the present invention takes the following technical means. That is, the first aspect of the present invention, an operating handle (13), tilling unit for tilling the field and (K), flat soil plate forming the ridge there behind the tilling unit (K) (B) In the walking type tiller provided with the rolling wheel (17) , the rolling wheel (17) and the cultivating board (B) are integrally configured to be rotatable around the horizontal axis so that the upper It is configured so that it can be positioned with a positioning pin (34) at a tilling work position retracted to a non-working position or at a soil cultivation work position located on the ground side. B) is positioned, and the cultivating board (B) is in a slanting rearward-down posture .

According to a second aspect of the present invention, in the first aspect of the present invention, a pair of left and right wheels (17) are provided, and are provided at positions facing the left and right widths of the lower part of the inverted trapezoidal shaped earth plate (B) in rear view. It is characterized by that.

In the present invention, an operating handle (13), tilling unit for tilling the field and (K), flat soil plate forming the ridge there behind the tilling unit (K) (B), and the rotary wheel ( In the walking type tiller provided with 17) , the rolling wheel (17) and the cultivating board (B) are configured so as to be integrally rotatable about the horizontal axis so that they are retracted to the upper non-working position. By switching to the tilling work position or the tilling work position located on the ground side by the positioning pin (34), the switching work between the cultivation work position and the tilling work position can be easily performed .
In addition, at the cultivating work position, the cultivated soil (B) is positioned on the front side of the wheel (17), and the cultivated soil plate (B) is placed in a slanting back-down position so that the cultivated soil can be removed from It is possible to form a good ridge that is easily received on the left and right sides by being received at the front surface.
Moreover, it can be made easy to form the inclined surface of the ridge by forming the cultivating board (B) in an inverted trapezoidal shape in the back view. Further, it is possible to prevent the kite formed by the cultivating board (B) from being stepped on by the wheel (17) and to improve the left-right balance of the machine body .

The figure which shows the walk type tillage machine at the time of soil cultivation work seen from the side The figure which shows the walk type tillage machine at the time of carrying work seen from the side The figure which shows the walk type tillage machine at the time of tillage work seen from the side The figure which shows the culture plate and wheel which were seen from the back (B) Diagram showing the orientation of the cultivation plate and the rolling wheel during the cultivation work as seen from the side (b) Diagram showing the posture of the cultivation plate and the wheel during the conveyance work as seen from the side (c) Tillage as seen from the side The figure which shows the posture of the mulching board and the wheel at the time of work Schematic diagram of walking type field cultivator seen from the side

A basic configuration of the walking type tiller of the present invention will be described with reference to FIG. In the present embodiment, front and rear refer to the traveling direction of the aircraft, and left and right indicate the heel side to be formed.
This walking type cultivator performs the cultivating work by rotating the cultivating claw of the cultivating section with the power from the engine or electric motor as a driving source, and when the walking cultivator is transported, the rotating wheel is grounded and cultivated. This is a so-called axle management machine that moves a part with a wheel apart from the ground.

  The engine 2 is mounted on the front upper part of the front body frame 1 extending in the longitudinal direction of the body, and a transmission case 4 having a transmission shaft 3 is supported on the rear side. The transmission case 4 is arranged in the vertical direction at the center in the left-right direction of the machine body, and the tilling shaft 5 is extended from the lower part of the transmission case 4 to the left and right sides. Then, the power of the drive shaft 2a of the engine 2 is transmitted to the transmission shaft 3 through the transmission belt 8, and then transmitted from the transmission shaft 3 to the tilling shaft 5, so that a plurality of tilling claws 6 attached to the tilling shaft 5 are provided. It is the structure which rotates and performs tilling work. Side disks 7 are provided at the left and right ends of the tillage shaft 5.

  A fuel tank 10 is provided at the upper part of the engine 2, and a bumper 11 attached upward is provided at the front end of the front body frame 1. Behind the fuel tank 10 are provided an operation handle 13 and a transmission lever 14 attached to the rear body frame 21.

  The tilling part K is configured by covering the upper side of the tilling claws 6 with a tilling cover 15, and a rearing plate B that forms a straw and a pair of left and right wheels 17 that are free to rotate are provided at the rear part of the tilling part K. Above the cultivating plate B, there are provided a vertical holder 19 for holding the "<"-shaped resistance rod 18 in a vertical posture and a horizontal holder 20 for holding the resistance rod 18 in a horizontal posture, which are respectively attached to the rear body frame 21. It is a configuration.

Next, the structure of the wheel 17 and the cultivating board B will be described with reference to FIGS.
The cultivating plate B is a flat iron plate formed in an inverted trapezoidal shape when viewed from the back, and has bent portions 22 that are bent rearward at both left and right ends. Further, a notch 23 is formed in the upper left and right center, and a rubber plate 24 that is to be cracked is attached to the notch 23.

  The pair of left and right wheels 17 are provided at positions facing the rear of the left and right end portions of the lower part of the cultivating plate B, and are each supported by the support body 25. The left and right support bodies 25 are connected by a horizontal axis rotation shaft 26, and when the rotation shaft 26 rotates, both the left and right support bodies 25 and the wheels 17 rotate in the front-rear direction.

  The cultivating board B is connected to the support body 25 and is rotated together with the left and right wheels 17 and the supporting body 25. The upper connecting plate 30 that connects the upper part of the supporting body 25 and the upper part of the cultivating board B, and the supporting body 25. It connects with the lower connection board 31 which connects the lower part of this, and the lower part of the cultivation board B. One end of the upper connecting plate 30 is fixed to the culture plate B, the other end is fixed to the support body 25 with a pin, and the upper connection plate 30 is configured to be rotatable about the horizontal axis with respect to the support body 25.

  The lower connecting plate 31 includes a fixing portion 31a that is fixed to the culture plate B side and an adjusting portion 31b that is connected to the support body 25. The fixing portion 31a and the adjusting portion 31b are connected to each other so that the link operation is possible. A long hole 31d is formed in the portion 31b to change the distance in the front-rear direction between the lower portion of the culture plate B and the wheel 17.

  The outer periphery of the rotation shaft 26 of the support body 25 is covered with a hollow rotation support shaft 32 that supports the rotation shaft 26, and the outer periphery of the rotation support shaft 32 is fixed to the rear body frame 21 side. The alignment plate 27 in which the alignment holes 27a are formed is attached. In addition, a positioning plate 33 having a plurality of positioning holes m, n, and p in a fan shape in a side view is attached to the rotating shaft 26 side. Then, the positioning pin 34 is inserted into the positioning hole m, n, or p with the alignment hole 27a, and the position of the support 25, that is, the wheel 17 and the soil culturing board B is determined as the culturing work position, the transport work position, and the tilling work. It is the structure which changes to a position.

Next, the cultivation work for forming the ridge while plowing, the transporting work for moving the walking type tiller during non-plowing, and the normal cultivating work will be described.
At the time of cultivating work (see FIGS. 1 and 5 (B)), the adjusting portion 31b is adjusted to a position where the distance between the cultivating plate B and the wheel 17 is widened, and the position is fixed by the fixing bolt 31c. When the positioning pin 34 is inserted into the culturing work position hole m and the alignment hole 27a and the wheel 17 is grounded with the support body 25 in an obliquely rearward posture, the cultivating board B becomes an obliquely rearward posture that is steeper than the support body 25, and the lower end portion is It becomes the posture which acts on the field H at the time of soil cultivation. Then, the operator holds the operation handle 13 and cultivates the field with the propulsive force generated by the rotation of the cultivating section K, receives the cultivated soil on the front surface of the cultivating board B, pushes it out to the left and right sides, and guides it on the surface of the bent section And the inclined surface of a ridge is formed on the right and left by pressing. At this time, the wheel 17 plays a role of adjusting the tilling depth to be constant. In addition, since the resistance rod 18 is not necessary during the culturing work, it is stored in the lateral holder 20 in the longitudinal direction in the longitudinal direction so as not to disturb both the operation and the culturing work.

  At the time of carrying work (see (a) in FIGS. 2 and 5), the adjusting portion 31b is adjusted to a position where the distance between the soil culturing plate B and the wheel 17 becomes narrow, and the position is fixed by the fixing bolt 31c. When the positioning pin 33 is inserted into the transporting work position hole n and the alignment hole 27a, and the wheel is grounded with the support body 25 being steeply inclined or substantially perpendicular to the ground, the cultivating board B is in a slanting front position. And away from the field to the non-acting position. Further, when the driver depresses the operation handle 13, the tillage part K is also separated from the ground, the front side of the body is inclined upward, and the body is in the transporting posture. At this time, the cultivating board B is configured not to enter the tillage rotation locus G of the tillage claw 6.

  During normal tillage work (see (c) in FIGS. 3 and 5), the wheel 17 and the cultivating board B are unnecessary, so that they rotate upward and the positioning pin 33 is inserted into the tillage work position hole p and the alignment hole 27a. Then, the support body 25 is set to the rear obliquely upward posture. Then, the resistance rod 18 is held in the vertical longitudinal posture by the vertical holder 19, and the lower end is applied to the field scene H. At this time, the resistance rod 18 is configured to penetrate through the middle crack portion of the rubber plate 24 of the cutout portion 23 of the culture plate B.

  Then, the operator grips the operation handle 13 and performs the tilling work with the driving force of the rotation of the tilling portion K.

13 Operation handle 17 Roller wheel 25 Support body K Tillage part B Soil plate

Claims (2)

Operation and handle (13), tilling unit for tilling the field and (K), and flat soil board there rearwardly to form a ridge of tilling portion (K) (B), provided the rotary wheel (17) In the walking type tiller, the rolling wheel (17) and the cultivating board (B) are configured so as to be rotatable around the horizontal axis so that they are retracted to the upper non-working position, Alternatively, it can be positioned with the positioning pin (34) at the soil cultivation work position located on the ground side,
A walking-type field cultivator characterized in that, in the cultivating work position, the cultivating board (B) is positioned in front of the wheel (17), and the cultivating board (B) is in a slanting rear-down posture . The walking type tiller according to claim 1 , characterized in that a pair of left and right wheels (17) are provided at a position opposite to the left and right widths of the lower part of the inverted trapezoidal culture plate (B) in rear view .