JPH0227902A - Tilling work apparatus - Google Patents

Abstract

PURPOSE:To keep a definite ground making performance corresponding to the change in the level of cultivated soil by plowing soil with a tilling rotor and grading and leveling the plowed soil with an apron movable almost parallelly in vertical direction. CONSTITUTION:An apron-supporting member 17 is pivoted to the rear end of parallel links 18, 18 at the back of a rear cover 16 and the front ends of the links 18, 18 are pivoted to a side cover 8. A vertical-position adjusting arm 22 is extended upward from the apron-supporting member 17. An adjusting lever 24 composed of a screw is placed between the top of the adjusting arm 22 and the top of a supporting arm 23 protruded upward from a main body 2. The handle 24a is rotated from the tractor side to move the apron 19 almost parallelly in vertical direction with the parallel links 18, 18.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a tillage device such as a rotary tiller mounted on the rear part of a tractor so as to be movable up and down, and more particularly to a tillage device with an improved apron support structure.

[Conventional technology]

Conventionally, a rotary rotor is attached to the rear of a tractor so that it can be raised and lowered via a three-point link, and an apron that is rotatable in the front-rear direction is installed behind the tiller rotor to level and level the cultivated soil. Tillage devices are known. In addition, in recent years, rotary tillers such as those mentioned above have been used to increase the tillage depth to 1.
Relatively deep plowing of 5 to 20CI+, plowing depth of 5 to 1
There are various ways to use it, such as those that perform surface crushing with shallow plowing of about 0a11, those that rotate the tilling rotor in the down-cut direction, those that rotate in the up-cut direction, and those that can be used for both down-cut and up-cut. There is something I did. Furthermore, a compression rod is disposed between the tilling device main body and the apron, and the tilled soil cultivated by the tilling rotor is leveled and leveled while being pressurized by the apron.

[Problem to be solved by the invention]

By the way, as mentioned above, the above-mentioned conventional tiller is only provided so as to be rotatable in the front-back direction with respect to the main body of the tilling device, so it is difficult to change the plowing depth by the tilling rotor or change the rearward position of the tilled soil. As a result, the angle at which the apron contacts the surface of the apron changes, and the leveling of the ground is inconsistent, sometimes getting better or worse.Furthermore, the pressure applied by the compression rod is constant, and cannot adequately respond to changes in the cultivated soil. The present invention has been made to solve the above problems, and has a structure in which the apron can be moved almost in parallel in the vertical direction, and the apron can be moved vertically to maintain a constant level by adjusting the vertical movement according to changes in the plowing depth and number of tilled soil by the tilling rotor. The purpose of the present invention is to provide a tillage device that can exhibit the following soil leveling performance.

[Means to solve the problem]

In order to achieve the above object, the present invention has the following features: (1) An apron that is attached to the rear of a tractor so as to be able to rise and fall, and that rotates in the front-rear direction behind the tilling rotor to level and level the cultivated soil plowed by the tilling rotor; In a movable tillage device,
The above-mentioned apron is supported so as to be able to move almost vertically parallel to the main body of the working device; (1) The working device body and the apron itself are connected by a parallel link; (2) The apron is configured so that the apron can be moved up and down from the tractor side; (5) Each of these is characterized in that a compression rod is disposed between the apron support member and the apron.

[For production]

With the above configuration, the apron can be adjusted vertically according to changes in plowing depth and cultivated soil, and the angle and pressure state of the apron in contact with the set surface can be kept constant to achieve uniform leveling.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a rotary tiller, and a top mast 3 and a lower link connecting portion 4 are provided at the front of a main body 2 of the rotary tiller 1, and three points are attached to the rear of the tractor (not shown). Power is transmitted from the TPO shaft of the tractor to an input shaft 5 which is connected via a link so as to be movable up and down and projects forward from the main body 2. A tilling rotor 6 is mounted horizontally in the left-right direction at the bottom of the main body 2, and receives power from a transmission case 7 to rotate in the arrow (up-cut) direction to perform normal tilling and deep tilling. There are side covers 8 on both left and right sides of the tilling rotor 6. An auxiliary side cover 8a is provided, and a shield cover 9 made of a rubber plate is provided above the tilling rotor 6, and a front support pipe 9 is provided.
a, supported by a rear support pipe 9b. A compression rod 10 is disposed between the front support pipe 9a and the main body 2 above it, and the vertical movement of the compression rod 10 can be adjusted by changing the position of the bottle. A front side cover 11 and a front auxiliary side cover 12 are provided at the front of the side cover 8 so as to be vertically adjustable. A crushing soil rake 13 is supported behind the tilling rotor 6 so as to be rotatable in the front and back direction via a shaft 14, and its rotation range is adjusted by a rake rotation adjustment lever 15. It is designed to be fixed. A rear cover 16 made of a synthetic resin plate is fixed to the rear of the crushing rake 13 in a forward-slanting manner. Behind the rear cover 16, an apron support member 17 has a parallel link 18.18 whose front end is pivoted to the side cover 8.
It is pivotally attached to the rear end of the. The apron support member 17 includes
The upper end of the apron 19 is pivotally supported via a shaft 19a so as to be rotatable in the front-rear direction, and apron side plates 20 are attached to both left and right sides of the apron 19, and between the apron support member 17 and the apron 19. A compression rod 21 is provided. Furthermore, apron support member 17
A vertical adjustment arm 22 projects upward from the main body 2, and an adjustment rod 24 made of a threaded body is provided between the top of the vertical adjustment arm 22 and the top of the support arm 23 that projects upward from the main body 2. By rotating the apron from the tractor side, the length of the adjusting rod 24 is changed and one apron is moved substantially in parallel in the vertical direction via the parallel links 18.18. Reference numeral 25 is a stand provided at the front of the main body 2. In the rotary tillage device 1 having the configuration shown in 2, when performing tillage work, the top link 3 and the lower link connecting portion 4 are connected to the three-point link of the tractor, and the input shaft 5 receives power from the tractor and operates the tiller rotor. 6 in the direction of the arrow, the stand 25 is put out of use, and up-cut tilling work is performed. At that time, the tilling depth of the tilling rotor 6 and the condition of the tilled soil being tilled by the tilling rotor 6 and thrown backwards. Accordingly, the crushing rake 13 is rotated and fixed by the adjustment lever 15 to obtain the desired crushed soil state, and the operator on the tractor turns the handle 24a backwards and adjusts the adjustment rod 24.
Change the length of the vertical adjustment arm 22. Apron support member 17. The apron 19 is adjusted up and down as shown by the imaginary lines through the parallel links 18, 18, and the cultivated soil that has passed through the crushing rake 13 is appropriately leveled by the apron 19 which is pressurized and adjusted through the compression rod 21. Further, depending on the plowing depth of the tilling rotor 6, the height of the front end side of the shield cover 9 is adjusted by changing the bin of the compression rod 10 so that the tilled soil is not discharged to the front side of the machine body. By adjusting each part in this way, appropriate soil crushing and land leveling work can be performed during deep plowing, back plowing, and shallow plowing. In addition, one apron can be adjusted up and down even during work. In a second embodiment of the present invention shown in FIG. 2, the apron support member 17 in the first embodiment is eliminated, and the apron 19 is directly pivoted to the rear end of the parallel link 18, 18. The second embodiment is the same as the first embodiment, except that a compression rod 26 is disposed between the upper part of the first embodiment 18 and the main body 2, so the same reference numerals are given and the explanation thereof will be omitted. In this second embodiment, the apron 19
The vertical movement of the compression rod 26 is adjusted by
This is done by replacing 6a and 26b. In the rotary tiller 1 having such a configuration, the vertical movement of the apron 19 is adjusted by the compression rod 26.
By replacing the bins 26a and 26b, the tilling rotor 6
Appropriate land leveling and leveling can be carried out according to the plowing depth and the condition of the tilled soil. The compression rod 26 applies pressure to the apron 19 at each position where the apron 19 is adjusted vertically, thereby making it possible to perform appropriate ground leveling and leveling work. Effects of the Invention As explained above, according to the tilling device of the present invention,
The following effects can be achieved. ■Since the apron is supported so that it can move almost parallel to the main body of the work equipment in the vertical direction, the apron can be adjusted so that its ground contact angle and pressing force are almost constant according to the tilling depth of the tilling rotor and the shape of the tilled soil G. , consistently stable ground leveling performance can be obtained. ■Since the support member to which the apron is pivoted is connected to the cultivating device body via a parallel link, the apron can be moved almost parallel in the vertical direction with a simple configuration, and the ground contact angle of the apron can be kept almost constant and the height can be increased. Accurate leveling work can be performed. (2) Since the nigeron itself is connected to the cultivating device main body via a parallel link, the mechanism for moving the apron almost parallel in the vertical direction can be easily configured, and the number of parts can be reduced. ■Since the apron can be moved up and down from the tractor side, the operator can move the apron up and down without having to get off the tractor.
You can select the appropriate leveling condition by moving the apron up and down while checking the tillage condition. Therefore, it is possible to improve the efficiency of tilling work. ■Since a compression rod is installed between the apron support member and the apron, an appropriate pressure force is applied to the apron in any position where the apron is adjusted vertically, allowing for appropriate leveling and leveling work. can.

[Brief explanation of the drawing]

FIG. 1 is a side view of the entire rotary tiller according to the first embodiment of the present invention, and FIG. 2 is a side view of the rotary tiller according to the second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Rotary tilling device, 2... Main body, 3... Top mast, 4... Lower link connection part, 5... Input shaft, 6... Tilling rotor, 7... Transmission case, 8...
Side cover, 9...Shield cover, 10.21.
26...Compression rod, 26a, 26
b...Pin, 11...Front side cover, 12...
・Front auxiliary side cover, 13... Crushing rake, 14
...Axis, 15...Rake rotation adjustment lever 16...
Rear cover, 17... Apron support member, 18...
Parallel link, 19... Apron side plate, 22... Vertical adjustment arm, 23... Support arm, 24... Adjustment rod, 25... Stand. Patent applicant Kobashi Kogyo Co., Ltd. Agent Patent attorney Makoto Kobashi Ukiyuki Patent attorney Susumu Murai

Claims (5)

[Claims] (1) It is attached to the rear of the tractor so that it can be raised and lowered, and is used to level the cultivated soil plowed by the tilling rotor behind the tilling rotor.
1. A tillage work device having a leveling apron rotatable in the front-rear direction, characterized in that the apron is supported so as to move substantially parallel to the work device main body in the vertical direction. (2) Claim (1) characterized in that the working device main body and the apron support member are connected by a parallel link, and the apron is pivotally connected to the apron support member so as to be rotatable in the front and back direction.
) The tillage work device described in ). (3) The tillage work device according to claim (1), wherein the work device main body and the apron itself are connected by a parallel link. (4) The tillage work device according to claims (1) and (2), characterized in that the apron is configured to be able to be moved up and down from the tractor side. (5) Claim (5) characterized in that a compression rod is disposed between the apron support member and the apron.
1), (2), and (4).