JPS6037902A - Disc type rotary cultivator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD 1 The present invention relates to a disc-type rotary tiller that performs tilling work by driving left and right discs 90. [Prior Art] Conventionally, this type of disc-type rotary cultivator has been disclosed in, for example, British Patent No. 857,923, published in 1983, and Utility Model Application No. 51-5.
As shown in Publication No. 4201, the rotary shaft with a disk is a center drive type, and there is an unused part in the center due to the transmission.
It is assumed that complicated am is required for residual tillage treatment. Furthermore, when the soil clod is reversed by driving the left and right rotary shafts with discs, the reversed clod is placed on top of the above-mentioned soil area, resulting in the formation of medium-high ridges.

[Problems to be solved by the invention]

The present invention is based on the above circumstances and aims to provide a disc-type rotary tiller that can easily process the uncultivated area in the center and form tillage marks evenly. It is something.

[Means to solve the problem]

To achieve this objective, the present invention
A transmission connected to the O-axis to transmit power is provided on the main frame, and rotary shafts with discs are provided on the left and right sides of the main frame to adjust the gearing angle. The rotary shaft is configured to be driven from the mission via a power transmission system, and a pair of left and right centers are provided in front of the inner end of the rotary shaft with a disc, which are driven from the mission via the power transmission system. It is characterized by the discs being arranged back to back.

【Example】

Hereinafter, an example of the present invention will be specifically explained with reference to the drawings. In the figure, reference numeral 1 denotes a transmission equipped with an input shaft 1a connected to a PTO shaft installed at the rear of the tractor via a universal joint, etc., and is attached to the main frame 2. In mission 1 above,
There are protruding horn shafts tb and ib that protrude left and right, to which one end of the universal joint 3 is pivotally attached. The universal joint 3 has a rond part that is self-extending and retractable, and the other end is pivotally connected to the input shaft 4a of the chain transmission system 4. The chain case 4b of the chain transmission system 4 is fixed to the rear end of the swing frame 5, and the inner end of the swing frame 5 is connected to the main frame 2 by a pivot shaft 6 in front of the mission 1. It is pivotally supported. The chain case 4b extends downward and is provided with an output shaft 4C of the chain transmission system 4 at its lower part, to which a rotary @8 having disks 7 mounted at a predetermined pitch is directly connected. The rotary shaft 8 has a support arm 9 extending downward at the tip of the swing frame 5.
Its inner end is pivotally supported. In addition, the rear part of the main frame 2 and the engine transmission base 4b
A hydraulic cylinder 10 is suspended between them, and the space between them can be expanded and contracted. That is, the hydraulic cylinder 10 has one end pivotally connected to a bracket 11 provided on the chain case 4b, and has a cylinder main body 10a;
The piston rod 10b is connected to a piston slidably fitted into the cylinder body 10a, and has an inner end pivotally attached to the main frame 2. Further, a pair of left and right disks 12.degree. 12 are provided at the lower front of the mission case 1C, with their backs facing each other, and are mounted on support shafts 13.13. The power transmission system from the mission 1 to the support shaft 13 is configured as follows. That is, as shown in Fig. 1.4.5, in the center of the lower part of the mission case 1G, there is a disk between the inner ends of the left and right rotary shafts 8, and furthermore, it is shaped like an inverted letter in front of them. A chain case 14 extending from
A chain 219 is suspended between the sprocket 17 attached to the output shaft 1b, which is rotated via a bevel gear 15° 16, and the sprocket 18 supported by a ball bearing at the front of the case. A chain transmission system 24 is provided which includes a tensioner 21, an idler 22, 23, etc., which are adjusted by a tensioner 21, an idler 22, 23, etc. At the front of the chain case 14, there is a support n25 that protrudes forward in an inverted C shape when viewed from above. The support shaft 13 is pivotally supported on this via a Taber roller bearing. The left and right center disks 12 having bosses 28 are fixed to the support shafts 13.13 by bolts via bolts 29. , the tensioner 21 and idler 22 were installed separately for power transmission by the check 219, but
The idler 22 may be provided in the tensioner 21 itself, or the idler may be used to transmit power to the chain 230 as shown in FIG. 6, and only the tensioner 31 may be used. , a chisel 32 is installed in the chain case 14 behind the left and right discs 12. Since the present invention is configured in this way, the power is
It is transmitted from the O-axis to the mission 1, from the mission 1 to the chain transmission system 4 via the universal joint 3, and from the chain transmission system 4 to each rotary shaft 8 from its outer side. The inner ends of the two are arranged as close together as possible, and the width of the central part is narrow. The disk 12 attached to the spindle 13.13 is
Sprocket 17 from mission 1. Chen 19. The chino transmission system 24 consists of subrockets 18, etc.
゜It is driven through a power transmission system such as the unipernal joint 27 to powerfully till the soil in the uncultivated area in the center and turn it over toward the outside and front, thereby making it possible to effectively remove residual tillage. , a split-shaped opening is formed in the center,
Since the soil clod that is turned over during tilling is backfilled by driving the right and left rotary shafts with discs toward the frontage, the soil clod does not rest on the uncultivated land and form medium-high ridges, resulting in a smooth finish. In addition, the traction resistance is reduced and the chisel 32 provides more complete treatment of the midsection. Note that depending on the soil type, the hydraulic pressure may be applied to the hydraulic cylinder 10.
For the cylinder body 10, piston rond 101J
By controlling the movement forward and backward, the gearing angle β can be appropriately selected and adjusted. In this case, the transmission angle of the universal joint 3 is the difference between the angle α formed with the output shaft 1b of the mission 1 and the gearing angle β, and the output can be transmitted to the chino transmission system at substantially constant speed. Further, it is preferable that the mutual contact level of the disks 12 can be adjusted, and the angle γ of the outer edge and the distance mz to the front edge of the disk 7 shown in FIG. 1 can be adjusted. It is good to be able to do so. Effects of the Invention As described above, the present invention transmits power from the transmission through the power transmission system to the left and right disc 91-inch rotary shafts to drive the shafts, and the inner end of the rotary shaft with the disc. In this system, a pair of left and right center disks driven by the mission via a power transmission system are placed back-to-back in front of the aircraft.
No. 1 The disc of the rotary shaft with a fisk on the right plows the soil on both the left and right sides inward and at the same time turns the soil strongly and well against the gravity on the left and right sides, so the above-mentioned center disc is made into a self-rotating type. In comparison, it is possible to sufficiently remove residual tillage in the medium-heated area, and therefore, there is no possibility that the treatment of the medium-heated area cannot be finished beautifully depending on the field, unlike with the rotary type, and moreover, the traction resistance is low. Because of its small size, it can be expected to have an excellent effect in that it can perform sufficient tillage work even in fields with soft soil, where it would be impossible to do so with a rotating type.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a rear view of the same, Fig. 3 is a side view of the same, and Figs. 4 and 5 show the power transmission system to the center disk. 6 is a diagram showing a modification of the chino transmission system shown in FIG. 4. DESCRIPTION OF SYMBOLS 1... Mission, 1a... Input shaft, 2... Main frame, 3... Universal joint, 4... Transmission system, 4a... Input shaft, 4b... Cheno case, 4C...output shaft, 5...swing arm, 6...
・Pivot shaft, 1...Disc, 8...Rotary shaft, 9
...Support arm, 10...Hydraulic cylinder, 10a.
...Cylinder, 10b...Piston Rondo, 11...
・Bracket, 12... Disk, 13... Support shaft,
14...Boo cone case, 15.16...Bevel gear, 17.18...Sprocket, 19...Cheno, 20...Screw, 21...Tensioner, 22, 2
3...Idler, 24...Cheno transmission system, 25...
- Support cylinder, 2G...shaft, 27...universal join 1-128...boss, 29...washer. U←5FD 966 pieces

Claims (1)

[Claims] A transmission that is connected to the PTO shaft of the tractor and receives power transmission is provided on the main frame, and a rotary shaft with a disc is provided on the left and right sides of the main frame so that the gearing angle can be adjusted. The shaft is configured to be driven from the mission via a power transmission system, and a pair of left and right center disks are provided in front of the inner end of the rotary shaft with a disc, which are driven from the mission via the power transmission system. A disc type rotary tiller characterized by being arranged back to back.