JPH01215202A - Vibrator for vibration type agricultural ground working machine - Google Patents

Abstract

PURPOSE:To reduce both occurrence of noise and tractive resistance by providing a pair of unbalancers mounted on rotating shafts side by side in a specific state so as to make the respective rotating shafts parallel in a posture in the horizontal direction. CONSTITUTION:A pair of unbalancers 33 mounted on rotating shafts 31 and 32 are provided side by side so as to be parallel in a posture in the horizontal direction. The pair of unbalancers 33 and 33 are synchronously rotated in mutual opposite directions by driving of an input shaft 35 and actuated so as to mutually compensate centrifugal force in the left and right directions. Thereby, vibration for synchronously moving a frame unit 30 is generated in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a vibration excitation device for generating vibrations applied to a vibrating agricultural ground working machine.

2. Description of the Related Art Vibrating agricultural ground working machines that vibrate ground working machines that perform ground work such as plowing have been known for a long time, such as a vibrating subsoil crusher and a vibrating bullet culvert machine. but,
Most of the conventional vibration-type agricultural ground-working machines have a mechanical mechanism using a cam or crank for the vibration device to give vibration to the ground-based working machine, and
The direction of vibration given to the ground work machine is the front-back direction.

For this reason, conventional vibrating agricultural ground working machines apply a large impact to each joint of the machine body at each end of the vibration stroke of the vibrating device, producing intense impact noise. This often causes damage to the various joints of the aircraft body, which causes problems in terms of high noise and durability.Furthermore, the efficiency of imparting vibration to ground-based work equipment is poor, and Since the backward stroke of the vibration reduces the traction force of the ground-based work equipment, there is a problem that it can only be towed by a large tractor with a large traction force.

The present invention has been made to solve these problems, and has a structure that does not generate severe impact noise, has good durability, and is effective in imparting vibrations to ground-based working machines, and improves the efficiency of applying vibrations to ground-based working machines. It is an object of the present invention to provide a means for improving efficiency and allowing ground work to be performed without requiring a large traction force.

The present invention has been completed based on the knowledge obtained through various studies and experiments for this purpose. That is, in a vibrating ground-based work machine, an unbalancer-type vibration system is used in which an unbalancer is installed on one rotation axis of the vibration system to vibrate the work machine, and the unbalancer-type vibration system is driven and rotated. When the balancers were combined in pairs so that the direction of vibration generated was unidirectional, the result was a vibration excitation device that did not generate the large impact noise that was generated at each end of the vibration stroke. An unbalancer-type vibration excitation device consisting of a pair of unbalancers configured to rotate in opposition to each other is used so that the vibration force line, which is the direction of movement of the vibration generated by the unbalancer, is in the vertical direction, By vibrating a ground-based work equipment that is swingably mounted on the machine frame, the traction resistance of the ground-based work equipment is significantly reduced, making it possible to tow with one-half to one-third of the traction force. The results were obtained and it was found that the vibratory device configured in this way is well suited for vibrating agricultural ground work.

Therefore, in the present invention, as a means to achieve the above-mentioned object, a pair of unbalancers provided on the rotating shafts are arranged in parallel so that the respective rotating shafts are parallel to each other in a horizontal direction. The present invention proposes a vibrating device for a vibrating agricultural ground working machine, in which these unbalancers are combined so that they occupy symmetrical positions in the left-right direction and rotate synchronously in opposite directions.

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

FIG. 1 is a side view of a vibratory ground work machine using the vibration excitation device according to the present invention, which is attached to the rear side of the vehicle body of a tractor. The vibration type ground work machine A is mounted on the rear, and a indicates the vibration excitation device assembled to the vibration type ground work machine A.

Tractor T is a normal four-wheeled riding tractor,
A top link 10, left and right lower links 11-11 (one is omitted in the drawing), a lift arm 12, and a PTO shaft 13 are installed on the rear side of the vehicle body.

The vibration type ground work mA includes a machine frame, a work machine C supported on the machine frame, and a vibration device assembled to the machine frame to vibrate the work machine C! The machine frame consisting of a is formed into a gate shape when viewed from the rear, and is assembled and mounted in a three-point pitch consisting of the top link 1O and lower links 11, 11 and lift arm 12 of the tractor T so that it can be raised and lowered. An assembly machine frame 20 is mounted on the frame 20, a lower arm 22 on the rear side thereof that freely rotates downward around a connecting fulcrum 21, and an upper arm 23 formed to elastically expand and contract like a shock absorber. and the lower arm 2 is formed into a machine casing shape.
2 and an upper arm 23, the frame body 30 of the vibration excitation device a is vertically movably supported. Then, the work 41 is attached to the bottom of the rear side of the frame 30 of the vibration excitation device a formed in the shape of a machine casing.
The tool bar 24, which is the pitch at which c is attached, is the mounting bracket 2.
It is equipped with 5.

In the illustrated example, the working machine C is a deep plowing machine in which a chisel 41 and wings 42 are mounted in one or multiple stages as shown in FIG. 2 on a shank 40 formed in the shape of a vertically long blade plate.
It may be any other suitable working machine, and the work 4i1c
The attachment to the machine frame is carried out by fitting the upper end of the shank 40 into the aforementioned tool bar 24 so as to be able to slide freely and securing it to the clamp 26. Depending on the situation, the assembly may be supported on the machine frame by appropriate means.

As shown in FIG. 3, the vibration excitation device a is installed between the front wall 30a and the rear wall 30b of the frame body 30, which is formed in the shape of a machine casing. The two rotating shafts 31 and 32, which are in the vertical direction in the figure), are arranged parallel to each other on the left and right and supported on the crossing rack, and the unbalancer 33 ... and gears 34, 34 that mesh with each other,
These gears 34, 34 are
3 are meshed with each other in a state in which they are both positioned below as shown in FIG. As a result, as shown in FIGS. 6 and 7, the unbalancers 33 and 33 provided on each rotating shaft 31 and 32 move in opposite directions in the left and right directions, while moving in synchrony in the up and down directions. The structure is such that vibrations in the vertical direction cancel each other out to generate vibrations in the vertical direction.

The vibration excitation device a is driven by one of the rotating shafts 31 and 32 of the unbalancers 33-33 arranged in parallel, one of which rotates its front end against the front wall of the frame 30. 3
The input shaft 35 is configured to project forward from 0a, and the rotational power is transmitted to the input shaft 35.
6 to the PTO shaft 13 of the tractor T.

The unbalancer-type vibration generator a that generates vibrations in which the direction of motion is vertical is composed of:
Although the two unbalancers 33, 33 are combined into a pair, there are cases where multiple unbalancers 33, 33, which are assembled on two sides, are arranged side by side in the left and right direction. In this way, when multiple sets of unbalancers 33-33 that generate vibrational forces in the vertical direction are arranged in parallel in the left-right direction, the tool bar 24 provided on the frame 30 described above is used to
It will be well adapted when multiple units are installed in parallel on the left and right.

Further, the vibration excitation device a configured by combining the two unbalancers 33, 33 into a -set only needs to be such that the direction of movement of the generated vibration is in the vertical direction, and the unbalancers 33, 33, which are in the -set 33 rotating shafts 31 and 32 may be combined vertically in parallel with each other in a posture in which the direction of the axis line is along the front-rear direction, or the rotating shafts 31 and 32 may be
They may be configured in such a way that they are arranged in parallel longitudinally or vertically so that the direction of their axes are along the left-right direction.

The embodiment device constructed in this manner operates as follows.

When the vibration generator a drives its input shaft 35, the pair of parallel unbalancers 33, 33 rotate in opposite directions and synchronize with each other, thereby reciprocating centrifugal force in the left and right directions. The unbalancer 33
- Generates vibrations that move the frame 30 that supports the 33 in the vertical direction, vibrates the machine frame on which the vibration device Ma is attached vertically, and moves the work machine C supported on the machine frame in the vertical direction. It starts to vibrate. At this time, the frame of the vibration generator a is supported by a lower arm 22 that rotates up and down and an upper arm 23 that expands and contracts elastically like a shock absorber. Since the movement is restricted by the vibration, even if the direction of vibration generated in the vibration excitation device gla is in the vertical direction, the actual movement of the frame 30 of the vibration vibration device a is as shown in FIG. As shown in the figure, the movement is mainly in the up-down direction, which is a combination of the up-down direction and the front-back direction, and the work 411c connected to this frame 30 also moves to follow the movement of this frame 30. Become,
It vibrates mainly in the vertical direction.

Since the vertical vibration generated by this vibration excitation device a is caused by the pair of unbalancers 33 and 33 rotating in opposite directions in synchrony, at each end of the stroke of the vibration, the cam It has significantly reduced the impact and impact noise generated in vibration exciter devices using mechanical mechanisms such as the Also, prevent large impacts from being applied to the connecting parts of the machine frame that supports it.

In addition, the vertical vibration generated by this vibration excitation device a causes the single work 411c to vibrate in the vertical direction with almost no loss, thereby reducing the traction resistance of the work equipment C by 2 minutes. The amount of plowing can be significantly reduced to 1 to 1/3, and the traction force can be sufficiently pulled by a tractor that is not so large to carry out the work, and - it can be plowed deeply.

As explained above, the vibration excitation device for a vibrating agricultural ground work machine according to the present invention has an unbalancer provided on the one rotation axis.
A pair of unbalancers are arranged side by side so that their respective rotational axes are parallel to each other in a horizontal direction, and the unbalancers are combined so that they occupy symmetrical positions in the left-right direction and rotate synchronously in opposite directions. As a result, the generation of impact noise that becomes noise is reduced, the efficiency of applying vibration to the work equipment is improved, and furthermore, the shock applied to the various connections of the work equipment and the machine frame that supports it is reduced. Furthermore, the working efficiency of one working machine C is improved and the traction resistance is significantly reduced, making it an extremely excellent vibration excitation device for a vibrating agricultural ground working machine.

[Brief explanation of the drawing]

Fig. 1 is a side view of a vibrating agricultural ground working machine equipped with the vibration exciter according to the present invention, Fig. 2 is a perspective view of the above ground working machine, and Fig. 3 is a partially broken view of the above vibration exciter. Plan view, No. 4
The figure is a partially cutaway front view of the above vibration exciter, Fig. 5 is a longitudinal cross-sectional side view of the same above vibration exciter, Figs. 6 and 7 are explanatory diagrams of the action of the same above vibration exciter, and Fig. 8 is a vibration It is an explanatory view of the action in a state where it is assembled to a type ground work machine. Explanation of drawing symbols A... Vibratory ground work machine T... Tractor a...
・Vibration device b...Machine frame C...Work machine lO
...Top link 11...Lower link 12...
・Lift arm 13...PTO shaft 20...Assembling machine frame 21...Connection fulcrum 22...Lower arm 23...Upper arm 24...Tool bar
25...Mounting bracket 26...Clamp 30
...Frame 30a...Front wall 30b...Rear wall 31, 32...Rotating shaft 33...Unbalancer 34...Gear 35...Input shaft 36...
...Universal join) fd140...Shank 41...Chisel 42...Wing Fig. 6 Fig. 7 Fig. 5

Claims (1)

[Claims] (1) A pair of unbalancers installed on the rotational shaft are installed in parallel so that the respective rotational axes are parallel to each other in a horizontal direction, and the unbalancers are placed in symmetrical positions in the left-right direction. A vibrating device for agricultural ground work equipment that is combined to rotate in synchrony in opposite directions.