JPH0228285B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibratory work mainly used for digging deep-rooted crops, in which a ground work machine is mounted on a frame so as to be able to swing back and forth and up and down using a vibration excitation device. Concerning improvements to the device.

As described in Japanese Patent Publication No. 35-19704, there is a means for swinging the ground work machine back and forth and up and down.
The plow body is supported so as to be able to swing up and down by two long and short arm rods that are pivoted to rotate up and down non-parallel to the machine frame. Connecting links that move up and down using eccentric cams,
A known method is to reciprocate back and forth using two restrictions while moving up and down.

With this method, the plow body moves forward while descending under the control of the two long and short arm rods that support it, and then rises while retreating in the same trajectory, allowing it to touch the soil beneath the field. In contrast, the front end of the plow body cuts in, but the soil on the top side of the plow body is not lifted up, and in order to dig up root vegetables, the soil in the field is lifted from below the root vegetables. There is a problem with not adapting to make it stand out.

In order to float root vegetables, the front end side of the working part installed at the lower end of the ground working machine that acts on the soil at the bottom of the field moves forward from below, rises and retreats, moving back and forth in a circular motion. It is necessary to repeat the movement in the direction and in the up and down direction.

As described in Japanese Patent Application Laid-Open No. 55-23937, a means for vibrating a ground-based work machine back and forth and up and down is to support the body of the ground-based work machine on a crank pin that moves in a circular motion, and to vibrate the body of the ground work machine in a circular motion. There is a method for reciprocating in the front-rear direction and vertical direction with the rotational movement of Therefore, when using a vibrating ground work machine to expand and soften the soil for digging deep-rooted crops, there is a problem in that the required horsepower increases, and the working part at the bottom of the ground work machine is When moving forward to excavate the soil, the movement is in the lower half of the circular movement at a constant speed and force, and the amount of upward movement increases as it moves forward. Therefore, the force of cutting into the soil and crushing it weakens halfway and becomes insufficient, and the action of lifting the sheared soil shifts to a force that moves backward as it approaches the end of the upward stroke. There is a problem in that the attenuation caused by increasing the amount of time is insufficient.

The present invention has been made in order to solve these problems occurring in the conventional means, and the working part of the lower end of the ground work machine moves back and forth and up and down with a locus of circular motion when viewed from the side. While repeating this, the forward and backward swing width and vertical swing width can be set as desired, and the shearing of the soil by the forward movement and the lifting of the soil by the upward movement can be done with almost no force attenuation. To provide a vibration work device that can efficiently crush and expand and soften the entire soil around the roots of deep-rooted crops by powerfully performing the work in a stress-free state.

In the present invention, as a means for achieving this object, a frame that is integrally connected and attached to the body of the tractor is configured to swing vertically and reciprocally about a fulcrum shaft by a vibration excitation device provided on the frame. A support fitting is provided, and a ground work machine equipped with a working part at the lower end is supported on the support metal fitting by a connecting shaft so as to swing back and forth around the connecting shaft, and the ground work machine is provided with a front and rear support provided on the frame. Mainly for deep-rooted crops, the front end of the working part at the lower end of the ground work machine is configured to repeatedly move back and forth and up and down with an arcuate trajectory in side view. This paper proposes a vibrating work device used for excavation.

Next, embodiments will be described in detail with reference to the drawings.

In Fig. 1, A is a vibration work device, which is attached to the rear of the tractor T's body in a three-point direct mounting manner.
It is designed to be driven by receiving power from the PTO shaft 1.

The vibration work device A includes a frame 2 that is integrally attached to the body of a tractor T, a support fitting 3 that is pivotally supported by a fulcrum shaft 30 provided on the frame 2 and can vibrate up and down, and the support fitting 3. Connecting shaft 4 provided
The ground working machine 4 is pivotally supported on the ground and can vibrate back and forth, and the vibration excitation device 5 is provided on the frame 2 so as to vibrate the ground working machine 4 and the support fitting 3 in the front and back direction and the vertical direction. has been done.

The support fitting 3 is formed to be long in the front-rear direction, and the part near the rear end (the left end in Fig. 3) is
It is pivotally supported by a fulcrum shaft 30 provided on the frame 2, and an abutting member 31 made of a roller is pivotally supported at a portion forward of the fulcrum shaft 30 (to the right in FIG. 3).
Behind the fulcrum shaft 30, the support fitting 3 is rotated clockwise around the fulcrum shaft 30, and the support fitting 3 is rotated clockwise around the fulcrum shaft 30.
A spring member 32 is provided between the frame 2 and the front end of the frame 2 to urge the front end side of the frame 2 downward. This spring member 32 works together with the vibration generator 5 to form a vertical vibration body.

The vibration generating device 5 uses an eccentric cam, and its rotating shaft 5a is supported by the frame 2, and as shown in FIG. 2, it receives power from the PTO shaft 1 via a bevel gear 6 and a shaft 7. It is designed to be driven by

The vibration generating device 5 made of the eccentric cam is connected to the abutting member 31 made of a roller provided on the bottom surface of the support fitting 3 by pressing the vibration generating device 5 with its upper surface under the force of the spring member 32 mentioned above. There is. Further, as shown in FIG. 1, in the vibration generating device 5 made of an eccentric cam, a first abutment member 41 made of a roller for vibrating the ground work machine 4 back and forth is connected to a first abutment member 31 made of the roller. The pressure contact is made at a position that is approximately 90 degrees out of phase with the pressure contact position.

The first abutment member 41 is connected to a second abutment member 42 made of a roller that contacts and connects with the ground work machine 4.
In addition, the link arms 43 are supported vertically in parallel to each other by a link arm 43 which is pivoted on the frame 2 described above so as to freely rotate back and forth. The second abutment member 42 is
A bearing surface 4 provided on the rear edge of the above-mentioned ground-based work equipment 4 below the connection shaft 40 that pivotally supports the ground-based work equipment 4
It is in contact with 4. Then, the portion of the ground work equipment 4 above the connection shaft 40 is pushed forward by the spring member 45 provided between it and the support fitting 3, so that the ground work equipment 4 is moved to the third position at the center of the connection shaft 40. By being biased to rotate clockwise in the figure, this receiving surface 44 comes into pressure contact with the second abutting member 42 . Also, this second abutment member 4
2 is in pressure contact with the receiving surface 44 of the ground work equipment 4, the link arm 43 rotates backward, and the first abutting member 41, which is pivotally supported on the upper end of the link arm 43, rotates as an eccentric vibration generating device 5. It is designed to come into pressure contact with the cam. Here, the spring member 45 constitutes a front-rear vibrator in cooperation with the eccentric cam serving as the vibrator 5.

Reference numeral 8 denotes a guide that restricts the movement of the ground work machine 4 from side to side.

The ground working machine 4 is formed in a vertically long shank shape, and the working part 46 provided at the lower end has an L-shaped front face and is used as an excavating working part 46a, as shown in FIG. 4a. In addition, as shown in Fig. 4b, the front shape is made into an inverted T-shape to form a subsoil crushing (full-thickness plowing) working part 46b, and as shown in Fig. 4c, bullets are attached. It may also be used as a working part 6c for forming an underdrain. In the case of the underdrain forming working part 46c, as shown in FIG.
6c may be connected with chain 9.

The embodiment device configured as described above operates as follows.

() When the eccentric cam (hereinafter referred to as the eccentric cam 5) serving as the vibration generating device 5 is at the solid line position in FIG. In other words, the link arm 43 located at the front) and in contact with the link arm 43 via the first abutment member 41 is at the solid line position (the most forward position of the front-rear vibrating stroke) tilted most to the right. Therefore, the ground work machine 4 uses the connecting shaft 40 as a fulcrum shaft by the second abutting member 42 pressing the receiving surface 44 of the ground work machine 4 against the bias of the spring member 45. The front end of the lower end working portion 46 has been moved to the position B (FIG. 3), in which the front end is advanced to the farthest right side (the frontmost end of the longitudinal stroke).

In this position B, the abutment member 31 provided on the support fitting 3 is joined to the peripheral surface portion 5c of the eccentric cam 5 having a medium distance from the rotation 5a, and the working part 6 of the ground work machine 4 The front end of is positioned in the middle of the vertical stroke.

() When the eccentric cam 5 rotates 90 degrees counterclockwise from the solid line position in Fig. 3, its rotation axis 5a
The peripheral surface portion 5c with a medium distance from the link arm 43 moves to the right side (that is, the front) and joins with the first abutting member 41 provided on the link arm 43, and is joined via the first abutting member 41. The link arm 43 is at an intermediate position in its longitudinal vibration stroke, and in this state, the second abutting member 42 is in contact with the spring member 45.
By pressing the receiving surface 44 of the ground work equipment 4 against the bias of There is.

In this position C, the abutting member 31 provided on the support fitting 3 is connected to the circumferential surface portion 5b of the eccentric cam 5 having the largest distance from the rotating shaft 5a, and the working part 46 of the ground work machine 4 This corresponds to the state in which the front end of is positioned at the top of the vertical stroke.

That is, the front end of the working part 46 moves from the position B to the position C while drawing an upward arcuate trajectory while retreating.

() When the eccentric cam 5 further rotates counterclockwise by 90 degrees (that is, 180 degrees from the solid line position), the circumferential surface portion 5d with the smallest distance from the rotation axis 5a
moves to the right side (i.e. front) and the link arm 43
The first abutment member 41 is joined to the first abutting member 41 provided in the
The link arm 4 contacts via the abutment member 41 of
3 is at the rearmost end of the vibration stroke in the longitudinal direction, and in this state, the second abutting member 42 provided on the link arm 43 touches the receiving surface 4 of the ground work machine 4.
4 and the working part 46 at the lower end of the ground work machine 4.
The front end of has moved to position N, which is the rearmost end of the longitudinal stroke.

At this time, the abutting member 31 provided on the support fitting 3
is connected to the circumferential surface portion 5c of the eccentric cam 5 having a medium distance from the rotating shaft 5a, and the front end of the working part 46 of the ground work machine 4 is positioned in the middle of the vertical stroke. The position D corresponds to the middle position of this vertical movement stroke.

That is, the front end of the working part 46 moves backward from the position C to the position D while tracing a descending arcuate trajectory.

() When the eccentric cam 5 further rotates counterclockwise by 90 degrees (i.e., 270 degrees from the solid line position in Fig. 3), the circumferential surface portion 5c with a medium distance from the rotation axis 5a will be on the right side (i.e., the front side). Moving on, the link arm 43 is connected to the first abutting member 41 of the link arm 43, and the link arm 43 in contact with the first abutting member 41 is at an intermediate position of the longitudinal vibration stroke, and in this state, the link The second abutment member 42 provided on the arm 43 is connected to the receiving surface 4 of the ground work machine 4.
4 and the working part 46 at the lower end of the ground work machine 4.
The front end of moves to position A, which is in the middle of the longitudinal stroke.

At this time, the abutting member 31 of the support fitting 3 joins with the peripheral surface portion 5d of the eccentric cam 5 having the smallest distance from the rotating shaft 5a, and moves the tip of the working part 46 of the ground work machine 4 up and down. Since it is positioned at the lowest point of the stroke, the aforementioned position A coincides with the lowest point of this vertical stroke.

That is, the front end of the working part 46 moves forward from the position D while moving downward to the position A while drawing a descending arcuate trajectory.

() When the eccentric cam 5 further rotates counterclockwise by 90 degrees (that is, 360 degrees from the solid line position in FIG. 3), it returns to the solid line position.

Therefore, the front end of the working part 46 moves forward from the position A while drawing an upward arcuate locus and moves to the position B.

In this operation, the operation of reciprocating the ground work machine 4 back and forth by the rotation of the eccentric cam is as follows:
The front and back stroke of the circumferential surface of the eccentric cam 5 is
The second abutting member 42 from the pivot point of the link arm 43 is attached to the second abutting member 42 provided in the middle of the link arm 43 that supports the abutting member 41 of
and the distance from the rotation fulcrum of the link arm 43 to the first abutment member 41, and the reduction is transmitted to the ground work machine 4.

In addition, the operation of reciprocating the ground work equipment 4 up and down is based on the vertical stroke of the circumferential surface of the eccentric cam 5, the distance from the fulcrum shaft 30 of the support fitting 3 to the abutment member 31, and the distance from the fulcrum shaft 30 to the connecting shaft. The image is enlarged at an enlargement ratio corresponding to the distance up to 40, and is transmitted to the ground work machine 4.

Therefore, the swing width in the longitudinal direction and the swing width in the vertical direction of the ground work machine 4 are determined by the above-mentioned link arm 43.
Desired settings can be made by selecting the leverage ratio set by providing the first abutment member 41 and the second abutment member 42 and the leverage ratio set by providing the abutment member 31 and the connecting shaft 40 on the support fitting 3. will be done.

Then, the working part 46 at the lower end of the ground work machine 4,
The action of moving it forward in order to apply shearing and excavation action to the underlying soil is the connecting shaft 4, which is the fulcrum shaft.
The working part 46 is rotated forward about the connecting shaft 40 by pushing the ground working machine 4 whose upper end side is pivotally supported by the second abutment member 42 forward. There is almost no attenuation of the force when shearing and excavating the soil, and the soil can be sheared and excavated powerfully.

In addition, the operation of raising the working part 46 at the lower end of the ground work machine 4 in order to give it an action of moving the sheared lower layer of soil upwardly moves the support fitting 3 pivotally supported by the fulcrum shaft 30 to the vibration excitation device. 5 makes the fulcrum shaft 30
The ground work machine 4, which is connected to the support fitting 31 by the connecting shaft 40, is pulled up by the action of pushing up and down in the center, so this ground work machine The operation of lifting the soil by the lifting operation of the working part 46 in No. 4 is also performed strongly with almost no force attenuation.

For this reason, the shearing and excavation of the soil by the forward movement of the working part 46 of the ground work machine 4 and the lifting of the soil by the upward movement are performed powerfully.
The entire upper soil is effectively crushed and expanded and softened.

In the above-mentioned embodiment, the front end of the working part 46 of the ground work machine 4 draws a substantially arc-shaped trajectory on the side surface, but it can be set to draw various trajectories by selecting the aforementioned leverage ratio. For example, the front and rear swing widths may be made larger and the upper and lower swing widths may be made smaller.

Furthermore, in the above-mentioned embodiment, one eccentric cam 5 is used as a vibrating body for vertical motion and fore-and-aft motion, but the eccentric cam 5 is also used as a vibrating body for vertical motion and as a vibrating body for longitudinal motion. A separate eccentric cam may also be provided.

As described above, the vibration work device according to the present invention, which is mainly used for digging deep-rooted crops, has a frame 2 that is integrally connected and attached to the body of a tractor T, and a vibration excitation device 5 provided on the frame 2 is used as a fulcrum. A support fitting 3 is provided so as to be able to reciprocate up and down around a shaft 30, and a working part 4 is attached to the lower end of the support fitting 3.
6 is supported by a connecting shaft so that it can reciprocate back and forth about a connecting shaft 40, and an abutment member 42 provided on the frame 2 that reciprocates back and forth is attached to the ground working equipment 4. Connected to ground work equipment 4
Since the front end of the working part 46 at the lower end is configured to repeatedly move back and forth and up and down with an arcuate locus when viewed from the side, the working part at the lower end of the ground work machine moves in a circular motion when viewed from the side. While repeating the movement back and forth and up and down with a trajectory,
The forward and backward swing width and vertical swing width can be set as desired, and soil shearing due to forward movement and soil lifting due to upward movement are powerful with almost no force attenuation. By doing so, the entire soil around the roots of deep-rooted crops can be efficiently crushed and expanded.

[Brief explanation of drawings]

Fig. 1 is a side view of a vibrating work device embodying the present invention and a tractor equipped with the same, Fig. 2 is a plan view of the same vibrating work device and a tractor equipped with the same, and Fig. 3 is an operation of the vibrating work device same as the above. FIG. 4 is a front view and a side view showing the types of working parts of the same vibration working device. Explanation of drawing symbols, A... Vibration work device, T...
Tractor, 1...PTO axis, 2...Frame, 3
... Supporting metal fitting, 30 ... Fulcrum shaft, 31 ... Collision member, 32 ... Spring member, 4 ... Ground work machine, 40
... Connection shaft, 41 ... First abutment member, 42 ...
Second abutting member, 43... Link arm, 44...
...Receiving surface, 45... Spring member, 46... Working part, 4
6a... Excavation work part, 46b... Subsoil crushing work part, 46c... Underdrain forming work part, 5... Vibration device, 5a... Rotating shaft, 5b, 5c, 5d...
Peripheral part, 6... Bevel gear, 7... Shaft,
8...Guide, 9...Chain.

Claims (1)

[Scope of Claims] 1. A support fitting 3 is provided on a frame 2 which is integrally connected and attached to the body of the tractor T so as to be able to reciprocate up and down about a fulcrum shaft 30 by a vibrating device 5 provided on the frame 2. A ground work machine 4 having a working part 46 at the lower end is supported on the support fitting 3 by a connecting shaft so as to swing back and forth around a connecting shaft 40, and the ground work machine 4 is attached to the frame 2. The abutment member 42 that reciprocates back and forth is connected so that the front end of the working part 46 at the lower end of the ground work machine 4 repeatedly moves back and forth and up and down with an arcuate locus when viewed from the side. A vibrating work device mainly used for digging deep-rooted crops. 2. A support fitting 3 is provided on the frame 2 which is integrally connected and attached to the body of the tractor T so as to be able to reciprocate up and down about a fulcrum shaft 30.
A ground work machine 4 equipped with a working part 46 at the lower end is supported by a connecting shaft so that it can reciprocate back and forth around a connecting shaft 40, and a vibrating device that reciprocates up and down is linked to the support fitting 3. A vibration excitation device that reciprocates back and forth is connected to the ground work machine 4, so that the front end of the working part 46 at the lower end of the ground work machine 4 moves back and forth and up and down with an arcuate locus in side view. A vibrating work device configured to repeatedly excavate deep-rooted crops.