JPH0473965B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vibrating agricultural ground working machine,
This invention relates to an improvement in a vibration excitation device that generates vibrations applied to a working machine.

[Prior art] Vibrating agricultural ground working machines that perform ground work such as plowing are vibrated, and are conventionally known, such as vibrating subsoil crushers and vibrating bullet culvert machines. .

In most of the conventional vibrating agricultural ground working machines, the vibration device for giving vibration to the ground working machine is a mechanical linkage mechanism using a cam or crank. In addition, the vibration movement is rotation around the fulcrum of the link, and the vibration direction is mainly in the front-back direction, but a pair of unbalancers rotate in synchrony and in opposite directions by separate rotation axes. A means for vibrating a ground work machine using an unbalancer type vibration excitation device using the formula is also disclosed in Publication No. 15015/1983.
This is known as described in Japanese Patent Application Laid-Open No. 54-66202.

[Problem to be Solved by the Invention] The above-mentioned conventional means is such that, in the case of a vibration exciter using a mechanical linkage mechanism using a cam or a flank, the generated impulse at each end of the vibration stroke is A large impact is transmitted to the joints of the machine's body, the joints with the body of the vehicle such as a tractor that supports it, and the body of the tractor, often causing damage to each joint. There is a problem in that it obstructs the operation of the vehicle body.

In addition, in the case of using an unbalancer-type vibration excitation device, the main body of the ground work machine is swingably supported on the mounting machine frame, and elastic material such as anti-vibration rubber is placed between them. If the vibration excitation device is integrated with the main body of the ground work equipment, a part of the vibration force generated by the vibration vibration device will deform the elastic material such as vibration isolating rubber. As a result, the efficiency of vibrating the body of the ground-based work equipment decreases, and
The mounting frame of the ground work machine is swingably supported on the body of the tractor, and the vibration excitation device is integrally assembled to the mounting machine frame. If the main body is vibrated together with the mounting frame, the vibrations generated by the vibration device will
By vibrating the attachment machine frame, the efficiency of vibrating the main body of the ground-based work equipment becomes poor, and there is a problem in that a large amount of horsepower is required to sufficiently vibrate the ground-based work equipment.

The present invention has been made in order to solve these problems occurring in conventional means, and uses an unbalancer type vibration excitation mechanism so that the generated vibration is in the vertical direction. To vibrate vertically, and to efficiently vibrate the main body of a ground work machine with vibrations generated by a vibration excitation mechanism, so that even with a small horsepower, the ground work machine can be effectively vibrated. The purpose is to provide new means.

[Means for Solving the Problems] The present invention has been completed based on knowledge obtained through various studies and experiments for this purpose. That is, the mounting frame of the ground work equipment is mounted on the body of a freely moving vehicle such as a tractor so as to be fixed at a desired height above the ground via a connecting means such as a three-point hitch link. The main body of the ground work machine and the gearbox-shaped frame body that houses and supports the vibration excitation mechanism that constitutes the unbalancer type vibration excitation device for vibrating the machine are separate from this mounting machine frame. A gear box-shaped frame housing an unbalancer-type vibration generating mechanism is suspended on this mounting frame so as to be able to swing vertically, and its vertical movement is controlled. A bracket is provided on the outer surface of this frame to which the main body of the ground work equipment is attached, and the vibration generating mechanism is set within a certain range. When it is driven, the resulting vibration vibrates the frame that houses the vibration mechanism and constitutes the vibration device, and most of the vibration is transmitted to the main body of the ground work equipment, causing the mounting machine frame to vibrate. This is due to the fact that only a small amount of vibration is transmitted to the body of the vehicle that supports it, making it possible to effectively vibrate the body of the ground work machine even with a small horsepower. be.

Therefore, in the present invention, as a means for achieving the above-mentioned object, a pair of unbalancers provided on each separate rotating shaft with the axial direction being the horizontal direction are provided at symmetrical positions with respect to each other in the left-right direction. An unbalancer-type vibration excitation mechanism that rotates synchronously in opposite directions is housed in a box-shaped frame, and a vibration excitation device is assembled, and the frame is used for freely traveling vehicles such as tractors. Attachment of ground work equipment to be attached to the body of the machine The machine frame is suspended movably within a certain range in the vertical direction, and a bracket is integrally provided on the outer surface of the frame, and the working part of the ground work equipment is attached to this. The present invention proposes a vibrating device for a vibrating agricultural ground work machine.

[Example] Next, an example of implementation will be described in detail with reference to the drawings.

FIG. 1 is a side view of a vibration-type agricultural ground-working machine that can carry out the present invention mounted on a tractor. 2 is a mounting frame of the ground working machine A; 3 is the main body of the ground working machine supported on the mounting frame 2; and 4 is an excitation device assembled to the mounting machine frame 2.

Tractor 1 is a normal four-wheeled tractor,
The rear of the fuselage 10 is equipped with a lift arm 11 and a PTO shaft 12, as well as a top link 13 and left and right lower links 14, 14.
It is equipped with a three-point hitch (one of which is omitted in the drawing).

The ground work machine A includes a mounting machine frame 2 that is connected and mounted to a three-point hitch of the tractor 1, and this mounting machine frame 2.
The main body 3 is attached to the box-shaped frame 30 of the vibration excitation device 4, which is movable up and down.
It becomes more.

The mounting machine frame 2 is formed in the shape of an enclosing frame that can be removed from the front and back, and is attached to the tractor 1 by means of a three-point hitch consisting of the top link 13 and the lower link 14.
It is mounted on the rear surface of the fuselage 10 and can be freely raised and lowered by operating a lift arm 11 connected to a lower link 14 by a connecting link 16.

In this embodiment, the ground work machine A is a machine for digging root vegetables such as burdock and yam, and the ground work part a that performs the digging work is the above-mentioned base machine formed in the shape of a square box. The frame body 30 of the shaking device 4 is used as a support frame, and a bracket 3a is provided on the lower surface side of the frame body 30, and the bracket 3a is provided with a blade portion 32a at the front edge and a long cultivated soil guide member 31 at the lower end. As shown in Fig.
The soil of the cultivation bed where root vegetables are cultivated is cut by a pair of shank 32, 32, and the soil is cut together with the root vegetables by a pair of long cultivated soil guide members 31, 31. Hold it and lift it backwards and upwards,
This allows root vegetables to be dug up.

The main body 3 of the ground work machine is arranged such that the frame 30 of the vibration excitation device 4, which serves as a support frame for the ground work machine, is arranged behind the above-mentioned mounting machine frame 2, and the front side of the frame 30 is By connecting the front ends of the lower connecting rods 50 that protrude forward from the lower portions of both left and right ends and the upper connecting rods 51 that protrude forward from the upper surface side of the frame 30 to the mounting machine frame 2, The lower connecting rod 50 is assembled and supported on the mounting machine frame 2. At this time, the base end side (rear end side) of the lower connecting rod 50 is integrally connected and fixed to the frame body 30, and the front end side is attached to the axis line. The upper connecting rod 51 is connected to the mounting machine frame 2 via the connecting shaft 52 which is oriented in the left-right direction, and the upper connecting rod 51 is freely movable between a certain distance between the shaft tube 510 and its inner cavity. The shaft cylinder 510 is formed to be extendable and retractable with a shaft rod 511 that is slidably fitted to the shaft cylinder 510, and springs 512 and 513 are inserted into the shaft cylinder 510 to buffer the movement of the shaft rod 511 in and out. The upper connecting rod 51 is configured to be moved in and out under a constant spring load, and the base end side and the distal end side of the upper connecting rod 51 are connected to the frame body 30 and the mounting machine frame 2 so that the axial direction is left and right. They are connected via connecting shafts 53 and 54 which are oriented in different directions. As a result, the lower connecting rod 50 rotates up and down about the connecting shaft 52, and the frame 30 moves up and down within a certain range, and during the up and down movement of the frame 30, The length of the upper connecting rod 51 can be expanded or contracted.

The vibration generating device 4 uses an unbalancer type vibration generating mechanism 4a in which an unbalancer w consisting of an unbalanced weight is attached to the rotating shaft 40 as shown in FIG. 8, and is similar to the above-mentioned ground work machine A. A frame body 30 serving as a support frame for the main body 3 is formed into a box shape, and inside thereof, as shown in FIGS. are arranged side by side in pairs on the left and right, and their respective front and rear shaft ends are pivotally supported on the front and rear machine walls 30a, 30b of the frame 30, and eccentric weights are attached to these rotating shafts 40, 40. Unbalancers w and w consisting of weights are respectively installed, and transmission gears G and G that mesh with each other are respectively installed, and these transmission gears G and G are connected together as shown in FIG. Engage in a state that hangs downward,
The shaft end of one of the pair of rotation shafts 40, 40 is connected to the machine wall 30 on the front side of the frame 30.
The input shaft 41 is formed into an input shaft 41 protruding from a, and is transmitted to the PTO shaft 12 installed on the rear surface of the body 10 of the tractor 1 via a universal joint shaft 43, and is transmitted from the tractor 1 side. By rotating the drive, the unbalancers w and w provided on the pair of rotating shafts 40 and 40, respectively, rotate in opposite directions as shown in FIGS. It is constructed so that it vibrates only in the vertical direction.

In FIG. 6, a conduit 70 provided in the rotating shaft 40 and a through hole 72 provided in the blind cover 71 of the bearing support member are breathers that communicate the inside of the frame 30 with the outside.

The embodiment device constructed in this manner operates as follows.

When the vibration generator 4 drives its input shaft 41, a pair of parallel unbalancers w,
The unbalancers w rotate in synchronization in opposite directions, so that they move in the horizontal direction so as to mutually cancel out the centrifugal force, and in the vertical direction, they move in synchronization and synergistically, and the unbalancers w, Generates vibrations that move the frame 30 that supports the storage shaft in the vertical direction,
The lower connecting rod 50 to which the vibration excitation device 4 is assembled is vibrated up and down, and the working part a supported on the lower connecting rod 50 is vibrated in the up and down direction.

At this time, the frame 30 of the vibration generating device 4 includes a lower connecting rod 50 that rotates up and down and an upper connecting rod 51 that expands and contracts.
Since the movement is regulated by the movement of the lower connecting rod 50 and upper connecting rod 51, even if the direction of vibration generated by the vibration generator 4 is in the vertical direction, the actual Frame 3 of vibration device 4
The movement of 0 is mainly a movement in the up-down direction, which is a combination of the up-down direction and the front-back direction, and the working part a connected to this frame 30 also follows the movement of this frame 30. As a result, it vibrates mainly in the vertical direction.

Therefore, the vibration in the vertical direction generated by this vibration excitation device 4 is caused by the box-shaped frame 30 that houses the vibration mechanism 4a of the vibration vibration device 4 being vertically attached to the mounting frame 2 of the ground work machine A. The main body 3 of the ground work machine A is assembled and supported on this frame body 30, with the frame body 30 serving as a support frame for the main body 3 of the ground work machine A. Therefore, the working part a is vibrated in the vertical direction with almost no loss, and vibrations are prevented from being transmitted to the mounting machine frame 2 and the tractor 1 to the machine body 10 side.

[Effects of the Invention] As explained above, the vibrating device for a vibrating agricultural ground working machine according to the present invention has a box-shaped frame 30 that houses an unbalancer type vibrating mechanism 4a.
is assembled and supported on the mounting frame 2 of the ground work machine A in a vertically movable manner, and a bracket 3 is attached to the outer surface of this frame 30.
a is integrally provided and the working part a of the ground work machine is attached to this, so when the vibration generating mechanism 4a of the vibration generating device 4 is driven to generate vibration,
The box-shaped frame 30, which is the body of the vibration excitation device 4, serves as a supporting machine frame that supports the working part a of the ground work machine, and transmits vibrations to the working part a with almost no loss, and It is designed to prevent the transmission of vibrations to the body side of the mounting machine frame 2 and the moving vehicle such as the tractor 1 on which it is suspended, so that the working part a of the ground work machine can be effectively vibrated even with a small horsepower. become.

[Brief explanation of drawings]

Fig. 1 is a side view of a vibrating agricultural ground working machine equipped with the vibration excitation device according to the present invention, Fig. 2 is a perspective view of the same agricultural ground working machine, and Fig. 3 is a side view of the same vibration exciter device. FIG. 4 is a partially cutaway front view of the above vibration exciter, FIG. 5 is a longitudinal side view of the same above vibration exciter, and FIG. 6 is a partially cut away longitudinal section of the same above vibration exciter. A side view, FIG. 7 is a partially cutaway front view of a main part of the above vibration exciter, and FIG. 8 is a side view of the vibration mechanism of the above vibration exciter. Explanation of drawing symbols, A...Ground work machine, a...Ground work unit, 1...Tractor, 10...Machine frame, 11
...Lift arm, 12...PTO axis, 13...
Top link, 14...Lower link, 16...Connection link, 2...Mounting machine frame, 3...Body of ground work equipment, 3a...Bracket, 30...Frame of vibration device, 30a, 30b... ... Machine wall, 31 ... Cultivated soil guiding member, 32 ... Shank, 32a ... Blade part, 4
... Vibration device, 4a ... Vibration mechanism, 40 ... Rotating shaft, 41 ... Input shaft, 43 ... Universal joint shaft, w ... Unbalancer, G ... Transmission gear, 50 ... Lower connection Rod, 51... Upper connecting rod,
510...Shaft tube, 511...Shaft rod, 512,51
3... Spring, 52, 53, 54... Connection shaft, 70
...Pipe line, 71...Blind lid, 72...Through hole.

Claims (1)

[Claims] 1. Each separate rotating shaft 40 whose axial direction is horizontal,
An unbalancer-type vibration generating mechanism 4a, in which a pair of unbalancers w and w provided at 40 occupy mutually symmetrical positions in the left-right direction and rotate synchronously in opposite directions, is stored in a box-shaped frame 30. The vibration exciter 4 is assembled by hanging the vibration excitation device 4, and its frame body 30 is attached to the attachment frame 2 of a ground work machine that is attached to the body 10 of a freely traveling vehicle such as a tractor 1, so that it can be moved within a certain range in the vertical direction. A vibrating device for a vibrating agricultural ground working machine, which is suspended, and a bracket 3a is integrally provided on the outer surface of the frame body 30, and a working part a of the ground working machine is attached to the bracket 3a.