JPH0445121B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suppression device used for suppressing a field after cultivation.

BACKGROUND OF THE INVENTION Among the crushing devices that have been widely used for crushing ridge surfaces, etc., there is one in which a crushing roller that rolls on the ground is pulled by a tractor or the like. In this case, if the weight of the pressure roller is increased in order to obtain a sufficient suppression effect, there is a problem in that when the pressure roller is lifted, the front and rear balance of the tractor is lost. An alternative suppressing device is a device that vibrates a suppressing plate that slides on a ridge up and down, but in this case, unless the width of the suppressing plate is made considerably large, it is preferable to simply push the soil forward. A state of suppression could not be achieved.

The present invention was made in view of the above circumstances, and provides a highly practical suppression device with excellent suppression effects, which will be explained below.

The suppressing device according to the present invention includes a suppressing roller that can freely vibrate up and down at the rear of a rotary tiller, and a vibrating device of an eccentric mechanism attached to the input shaft of the rotary tiller, and the vibration of the vibrating device is Vibrations are transmitted to the pressure roller through a vibration axis installed along the frame of the rotary tiller and a vibration transmission mechanism that transmits vibrations when the pressure roller is on the ground, but not when it is lifted off the ground. It is characterized by what it did. below,
Embodiments of the invention shown in the drawings will be described.

FIG. 1 is a perspective view showing an example in which the suppression device according to the present invention is used in combination with a tillage device. In the illustrated example, the rotary tiller 1
A pressure roller 2 is provided at the rear of the vehicle, and the vehicle is pulled as a whole by a tractor (not shown).
It is configured to perform cultivation and suppression at the same time. The driving force of the rotary tilling device 1 is that of the tractor.
Bevel gear transmitted from the PTO shaft to the input shaft 3 and housed in the gear box 4, shaft cover 5
The rotary tiller blade is rotated via the shaft inside and the chain inside the chain cover 6. A frame 8 of the suppression device is pivotally attached to the rear part of the base 7 provided on the shaft cover 5 so as to sandwich the gearbox 4 via a mounting pin 23, which will be described later.This frame 8 is attached to an upper link connected to the tractor. 9 via a jack 10. Therefore, the handle 10a of the jack 10
By turning the frame 8, the frame 8 can be rotated in the vertical direction. An arm 12 is fixed to a mounting rod 11 provided at the rear of the frame 8, and a support shaft 13 is attached to this arm 12. Support members 14 are rotatably attached to both ends of the support shaft 13, and the rotation shaft 2a of the pressing roller 2
is supported by this support member 14. Further, the support shaft 13 is provided with a stopper 13a for controlling rearward rotation of the support member 14. In the illustrated example, the support member 14 protrudes forward and diagonally downward from the support shaft 13 to support the pressure roller 2. By doing so, the resultant force of the reaction force received by the pressure roller 2 is transferred to the support member 14. This is preferable from the viewpoint of strength because it almost follows the axial direction of the . The support member 14 has a stem 14a, to which a horizontal bar 16 equipped with a fitting 15 is attached. On the other hand, a slider 19 is rotatably attached to the rear end of the vibrating shaft 18 extending from the eccentric vibrating device 17 attached to the input shaft 3 with a pin 18a, and a through hole provided in the vibrator 19 A sliding shaft 20 is fitted into the hole 19a so as to be slidable up and down. The lower end of the sliding shaft 20 is pinned to the fixture 15, and this pinned portion and the slider 19
A spring 21 is disposed between them. The vibration shaft 18 is provided with a support 22 at its intermediate portion, and the support 22 is swingably attached to the base body 7 by a mounting pin 23.

FIG. 2 is a schematic diagram showing the vibration mechanism of the pressure roller 2. As shown in FIG. Due to the action of the eccentric vibration device 17,
When the vibration shaft 18 vibrates in the direction of arrow A around the mounting pin 23, the slider 19 provided at the rear end of the vibration shaft 18 moves up and down along the sliding shaft 20, and Trunk 14a of support member 14
Press down periodically. Since the pressure roller 2 is constantly receiving an upward reaction force from the ground, the pressure roller 2 vibrates up and down due to the periodic pressure.

When the pressure roller 2 is lifted up, the pressure roller 2 rotates in the direction of arrow B around the support shaft 13 due to gravity as shown in FIG. 3, and the support member 14 is held in contact with the stopper 13a. Ru. At this time, a gap is created between the upper end of the spring 21 and the slider 19, so even if the vibration shaft 18 vibrates, the suppressing roller 2 does not vibrate.

FIGS. 4a and 4b are a front view and a side view, respectively, showing the eccentric vibration device 17. FIG. Due to the driving force transmitted from the PTO shaft via the universal joint 24,
When the input shaft 3 rotates, the eccentric ring 25 provided on the input shaft 3 and the bearing case 26 provided on the outside thereof perform eccentric movement, causing the vibration shaft 18 to vibrate.

In the suppressing device according to the present invention, the suppressing roller 2
Since it rolls on the ground while vibrating up and down, an excellent suppressing effect can be obtained even though the weight of the suppressing roller itself is smaller than that of a suppressing roller that merely rolls. Also, unlike a vibrating pressure plate, the rolling of the pressure roller causes the soil in front to be rolled in downward, resulting in a favorable suppression state.

As is clear from the above description, the suppression device according to the present invention is capable of performing effective suppression while cultivating with a rotary tiller. In particular, it is structurally simple because the vibrating device can be provided without requiring any major improvements to the tiller itself. In addition, when turning at the edge of the field, vibrations are not transmitted to the suspended pressure roller, so large vibrations and shocks are not transmitted to the operator, resulting in good workability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the use state of the suppression device according to the present invention, Fig. 2 is a side view showing its configuration, Fig. 3 is a side view of the main part, and Fig. 4 a and b are of the eccentric vibration device. They are a front view and a side view, respectively. All figures represent examples. 1... Rotary tillage device, 2... Squeezing roller,
3...Input shaft, 4...Gearbox, 7...Base, 8...Frame, 12...Arm, 13...
Support shaft, 13a...stopper, 14...support member, 14a...branch, 17...eccentric vibration device, 1
8... Vibration shaft, 19... Slider, 20... Sliding shaft, 21... Spring, 22... Support, 25... Eccentric wheel.

Claims (1)

[Claims] 1 A pressure roller is provided at the rear of the rotary tiller, and a vibrating device of an eccentric mechanism is attached to the input shaft of the rotary tiller, and the vibration of the vibrating device is transmitted to a vibrating shaft provided along the frame of the rotary tiller. and a suppressing device characterized in that vibrations are transmitted to the suppressing roller through a vibration transmission mechanism that transmits vibrations when the suppressing roller is on the ground, but not when the suppressing roller is lifted from the ground.