JPH01262703A - Vibrator for working machine of vibrating type - Google Patents

Abstract

PURPOSE:To narrow intervals of vibrating mechanisms standing in a row with making diameter of weights, by dividing weights set on rotation axes of every vibrating mechanisms set in axes of a frame arranging in a row with double series in axial direction and put side by side on rotation axes in a specific state. CONSTITUTION:Every vibrating mechanisms 'a' are set in axes on a frame 'b' in a state that rotation axes 1 of said mechanisms are arranged in a row in parallel. In an interval between divided weights 20 and 21 standing in a row with an interval in a direction of axis of one vibrating mechanism 'a', other half sides of the divided weights 20 and 21 standing in a row in a direction of axis of another vibrating mechanism 'a' are inserted in a state of lapping in glancing to axial 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 working machine.

A machine frame mounted on a self-propelled vehicle body such as a tractor supports a working machine such as a deep plowing skewer subsoiling machine or a bullet culvert machine in a swingable manner, and is equipped with a vibration device that vibrates the working machine. A vibrating work machine configured with the following has been known for a long time.

By the way, as an excitation device for vibrating a vibrating work machine, as shown in Fig. 1, an unbalancer type excitation mechanism a in which a weight 2 is eccentrically provided on a rotating shaft 1 is used. , as shown in Figures 2 and 3, the rotation axis 1 is parallel to each other, and two series are arranged in parallel vertically or horizontally, and the shafts are mounted on the frame, and these two series are placed in an unbalancer type starting position. The oscillating mechanisms a and a are provided with gears G coaxially rotating on their respective rotating shafts 1 and meshed with each other, so that they rotate in synchrony and in opposite directions, and each weight 2 The gears G and G are positioned so that the gears 2 and 2 rotate in symmetrical positions with respect to each other in either the left-right direction or the up-down direction with respect to each rotating shaft 1 (in the left-right direction in the illustrated example). By meshing and combining, the generated vibrations are canceled out in either the left-right direction or the up-down direction, and are generated as vibrations only in the up-down direction or left-right direction (in the example shown, only the up-down direction). It has been found that the vibration excitation device A, which is designed so that the

However, in this form of vibration excitation device A, an unbalancer type vibration excitation mechanism a in which a weight 2 is eccentrically provided on a rotating shaft 1 is used.
When the respective weights 2 and 2 provided on the rotating shafts 1 and 1 are combined into a pair so that they rotate in opposite directions and in synchronization, the vibration generating mechanisms a and a are arranged in parallel. In order to avoid interference when each weight 2 rotates,
It is possible to set the interval between the rotating shafts 1 and 1 to be wider than the diameter R of the rotation locus of the outer end of the weight 2 provided on each of the rotating shafts 1 and 1. Due to this necessity, there is a problem that the overall volume becomes large, and if you try to increase the diameter of the weight 2 in order to efficiently increase the excitation force without increasing the weight of the weight 2. Since this problem becomes even more serious, there is a problem that a compact and efficient device cannot be obtained.

The present invention has been made in order to solve these problems, and the diameter R of the weight 2 provided on the rotating shaft 1 of the vibration excitation mechanism a is increased so that the vibration excitation force becomes large in proportion to the weight. However, when multiple vibration generating mechanisms a are arranged in parallel, their rotating shafts 1 can be supported in parallel with narrow shaft spacing,
The purpose is to provide a new means for miniaturization.

In the present invention, as a means for achieving this object, two vibration generating mechanisms each having a weight eccentrically provided on the rotating shaft are arranged in parallel with the rotating shafts parallel to each other, and the vibration generating mechanism is mounted on the frame body. In an excitation device in which these excitation mechanisms are combined so that they rotate in opposite directions in synchronization with gears installed on their respective rotation axes, the weights provided on the rotation axes of each excitation mechanism are divided in the axial direction. The divided weights are formed into a plurality of divided weights, and these divided weights are fitted with the divided weights of the adjacent vibration excitation mechanisms so that one half side wraps and rotates when viewed from the axial direction. This invention proposes a vibration excitation device for a vibrating working machine that is arranged in parallel on a rotating shaft.

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

FIG. 4 is a side view of a vibrating working machine using the vibration excitation device A according to the present invention, which is installed on the rear side of the vehicle body of a tractor.
In the figure, T indicates a tractor, S indicates a vibratory working machine mounted on the rear of the vehicle body of the tractor T, and A indicates a vibrating device assembled to the vibratory working machine S.

Tractor T is a normal four-wheeled riding tractor,
On the rear side of the vehicle body, there is a top link 30 and left and right lower links 31, 31 (one is omitted in the drawing).
It is also equipped with a lift arm 32 and a PTO shaft 33.

The vibrating work machine S is supported by a machine frame F mounted on the rear side of the vehicle body of the tractor T, and the machine frame F is formed into a gate shape when viewed from the rear, and is connected to the top link 30 of the tractor T.
and lower links 31, 31 and lift arm 32
An assembling machine frame 40 is mounted on a three-point pitch such that the assembly can be freely raised and lowered, a lower arm 42 that freely rotates up and down about a connecting fulcrum 41 is attached to the lower part of the rear side of the frame 40, and a shock absorber. an upper arm 43 formed to elastically expand and contract in a shape, and a vibration bag mA formed in a machine casing shape and supported vertically movably by the lower arm 42 and the upper arm 43.
The frame will be better. The work machine S is shown in the figure, in which a tool bar 44, which is the pitch at which the work machine S is attached, is attached to the bottom of the rear side of the frame body of the vibration excitation device A formed in the shape of a machine casing, using a mounting bracket 45. In this example, a chisel 51 and a wing 5 are attached to a shank 50 formed in the shape of a vertically long blade plate.
2 are installed in one or multiple stages, and the upper end portion of the shank 50 is fastened to a clamp 46 that is slidably fitted to the tool bar 44 described above. .

5 to 7 are detailed views of the above-mentioned oscillation device A, in which FIG. 5 is a cross-sectional plan view, and FIG. 6 is a partially cut-away front view.
FIG. 7 is a side view taken longitudinally, and in the figure, a is a vibration generating mechanism in which a weight 2 is eccentrically provided around the rotation axis l, b is a frame body that pivotally supports the vibration generating mechanism a, and G-G. shows a gear that synchronizes two parallel vibration generating mechanisms aha and rotates them in opposite directions.

The vibration generating mechanism a is an unbalancer type vibration generating mechanism configured by eccentrically providing a weight 2 on a rotating shaft 1, but the weight 2 provided on the rotating shaft 1 is divided in the axial direction. The weights are formed into two divided weights 20φ21, and are attached to the rotating shaft l in parallel in the axial direction so that they overlap when viewed from the axial direction.

The attachment state of the divided weights 20 and 21 of these vibration-exciting mechanisms a to the rotating shaft l is such that when the vibration-exciting mechanisms aha are arranged in two series in parallel and are pivotally supported on the frame body, one of the vibration-exciting mechanisms a is In this case, the two split molds 1120021 are installed in parallel on the rotating shaft l with an interval wider than twice their axial thickness, and the other vibration excitation mechanism a In the case of the two divided types S! 20 and 21 are in close contact and overlapped, and are mounted in parallel on the rotating shaft l.

When each vibration generating mechanism aea is pivotally supported on the frame body with the rotating shafts 1 and 1 parallel to each other,
Within the interval between the divided weights 20 and 21 of one vibration excitation mechanism a, which are arranged in parallel at an interval in the axial direction, the other vibration excitation mechanism a is closely overlapped and arranged in parallel in the axial direction. One half side of the split weights 20-21 is fitted so as to overlap when viewed from the axial direction, and the split weights 20-21 are arranged in a pair on the left and right,
In this state, these vibration generating mechanisms aha are pivotally supported by the frame. In the illustrated example, the vibration generating mechanisms aha arranged in parallel are arranged side by side on the left and right, but they may be arranged in parallel vertically.

In this case, in the vibration generating mechanism a that connects the divided weight 20 and the divided weight 21 in parallel, the divided weights 20 and 21 are left as the undivided integrated weight 2. You can leave it there.

Another one-piece type y! 20 and 21, when attaching them to the rotating shaft 1, the distance between the parallel vibration generating mechanisms aea in the axial direction is set to be slightly larger than the axial thickness of the divided weights 20 and 21. The divided weights 20 and 21 attached to the rotating shaft 1-1 of each of the parallel vibration generating mechanisms aea are set to a wide extent, and the divided weights 20 and 21 of the vibration generating mechanism a that are adjacent to each other are
In some cases, it may be arranged to fall within the interval of 0.21.

In addition, as shown in FIGS. 8 and 9, in order to combine the two parallel vibration generating mechanisms aha so that they rotate in opposite directions in synchrony, each of the two vibration generating mechanisms aha is The gears GG provided on the rotating shafts 1 and 1 are respectively provided at the intermediate portions of the rotating shafts 1 in the axial direction, and in one vibration generating mechanism a, as shown on the left hand side in FIG. , the gear G in which divided weights 20 and 21 are provided on the rotating shaft 1.
The two sides of the gear G in the axial direction are arranged and attached to the rotating shaft 1, and in the other vibration generating mechanism a, the axial direction of the gear G provided on the rotating shaft 1 is arranged as shown on the left hand side in FIG. At both sides of the vibration generating mechanism a (the right side in FIG. 8), a divided weight is attached to a portion corresponding to the outer side of the divided weights 20 and 21 provided on the rotating shaft 1 of the vibration generating mechanism a (the right side in FIG. 8). 20 and 21, respectively, and as shown in FIG.
・There are cases where it is rotated with one half of 21 held in place.

The frame body is formed in the shape of a machine casing, and the mechanism 60 on the front side thereof is formed as a cover plate that can be attached to and detached from the main body 5. Then, the vibration generating mechanism aSa is arranged in parallel with the above-mentioned two units.
The rotary shafts 1 and 1 are supported by a shaft spanning between a mechanism 60 on the front side and a mechanism 61 on the rear side of the frame, and The front end side of the rotating shaft 1 of one vibration generating mechanism a is made to protrude to the front side of the frame body, and the input shaft 1
It is formed in a. The input shaft 1a is connected to the PTO shaft 3 of the tractor T via the universal joint shaft 34.
It is conducting to 3.

A gear G-G provided in the vibration generating mechanism aφa so as to synchronize rotation of two vibration generating mechanisms aaa mounted on parallel shafts in opposite directions has an outer diameter corresponding to the distance between the parallel rotating shafts 1 and 1. The weights 20 and 21 are formed so as to correspond to each other and are attached to the shaft ends of the respective rotating shafts 1 and 1, and the weights 20 and 21 provided on each of the rotating shafts 1 and 1 are respectively positioned below as shown in Fig. 6. , these gears GG are meshed with each other.

The vibration generating device A configured in this manner operates as follows.

When the input shaft 1a protruding from the front side of the frame is driven, two unbalancer-type vibration generating mechanisms aha arranged in parallel and pivoted on the frame rotate in synchronization in opposite directions. When viewed from the axial direction of the respective rotational axes l and 1 of the vibration generating mechanisms a and a, the vibrations in the left and right directions cancel each other out, so that vibrations whose movement direction is in the vertical direction are generated. In addition, if the frame body is turned 90 degrees clockwise (or counterclockwise) in Fig. 6 and the vibration generating mechanisms asa are arranged vertically in parallel, vibrations in the left and right direction will be generated, and , rotate the frame so that the plan view shown in FIG. 6 shows each vibration mechanism a.
If the axial direction of the rotation axis lφ1 of a is in the vertical direction, vibrations in the front and rear direction will be generated.

Thus, the round/round lancer type vibration excitation device A that generates vibrations in one direction is constructed using a weight provided on each rotation axis l and 1 of the vibration excitation mechanisms aha that are combined in parallel in two sets. 2
2 is divided in the axial direction and attached to each rotating shaft l as divided weights 20 and 21, and these divided weights 1120 and 2
1 and the adjacent divided type 1120Φ21 of the vibration generating mechanism a are fitted together and rotated when viewed from the axial direction.
As shown in Figs. 2 and 3, the weights 2 and 2 are mounted at the same position in the axial direction of the rotating shafts 1 and 1, and the weights 2 are arranged in parallel on the left and right, as shown in Figs. They will now rotate in parallel without losing their balance.

Then, in a state where the balance between the parallel vibration generating mechanisms aha is maintained, the radius R of the rotation locus of the outer end of the divided weights 20 and 21 that spans the weights is the same as the rotation axis l and the rotation axis l. It is approximately twice the shaft pressure @D. That is, heavy i! 2, so that the diameter R of the rotation locus of the outer end thereof can be expanded to approximately twice the interaxial pressure #D between the rotation shaft 1 and the rotation shaft 1, and The interaxial pressure #D between the shaft 1 and the shaft 1 can be reduced to 1/2 of the radius R of the rotation locus of the outer end of the weight 2.

As explained above, the vibration excitation device for a vibrating work machine according to the present invention is constructed by arranging two vibration excitation mechanisms in parallel with each other with the rotation axes parallel to each other, in which a weight is eccentrically provided on the rotation axis. In an excitation device that is mounted on a body and combined so that the excitation mechanisms rotate synchronously in opposite directions through gears installed on their respective rotation axes, a weight tip shaft is provided on the rotation axis of each excitation mechanism. A state in which the divided weights are divided in the direction and formed into a plurality of divided weights, and these divided weights are fitted together with the divided weights of the adjacent vibration generating mechanisms so that one half side wraps and rotates when viewed from the axial direction. Since the two rotating unbalancer-type vibration generating mechanisms are arranged in parallel on their respective rotational axes and are combined to rotate in opposite directions in synchronization, the vibration generated can be reduced. A vibration excitation device configured so that the directions are unidirectional can be improved by increasing the diameter of the weights of the parallel vibration mechanisms without losing balance and increasing the efficiency of the parallel vibration mechanisms. It becomes possible to reduce the size by narrowing the spacing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a rotating unbalancer-type vibration excitation mechanism, and Fig. 2 is a vibration excitation device in which two of the above vibration excitation mechanisms are arranged in parallel and the vibration generated is in one direction. FIG. 3 is a partially cutaway plan view of the same as above; FIG. 4 is a side view of a vibrating work machine using the vibration excitation device according to the present invention installed on a tractor; FIG. 5 6 is a partially broken front view of the same as above, FIG. 7 is a longitudinal side view of same as above, and FIG. 8 is a cross-sectional plan view of another embodiment of the above vibration exciter. , FIG. 9 is a partially cutaway front view of the same as above. Explanation of drawing symbols A... Vibration device D... Center distance F...
・Machine frame G...Gear R...Diameter of rotation locus S...Vibrating work machine T...Tractor a...Vibration mechanism b...Frame body
1... Rotating shaft 1a... Input shaft 2
... Weight 20, 21 ... Divided weight 30 ... Top link 31 ... Lower link 3
2... Lift arm 33... PTO shaft 34.
...Universal join [1 40...Assembling machine frame 41...Connection fulcrum 42
...Lower arm 43...Upper arm 44.
...Tool bar 45...Mounting bracket 46...
Clamp 50...Shank 51...Chisel 52...Wing 6...Housing main body
60...R wall on the front side 61...Mechanism patent on the rear side Applicant Kawabe Noken Sangyo Co., Ltd. No. 7
Diagram A

Claims (2)

[Claims] (1) A vibration mechanism with a weight eccentrically placed on the rotating shaft,
In a vibration excitation device in which two sets of rotating shafts are arranged parallel to each other and mounted on a frame body, and the vibration generating mechanisms are combined so as to rotate in opposite directions in synchronization with gears provided on the respective rotation shafts. , the weight provided on the rotating shaft of each vibration excitation mechanism is divided in the axial direction to form a plurality of divided weights, and these divided weights are connected from the axial direction to the divided weights of adjacent vibration excitation mechanisms. A vibration excitation device for a vibrating working machine, which is arranged side by side on each rotating shaft so that the two halves fit into each other so as to overlap and rotate. (2) A plurality of split weights are attached to the rotating shaft of one of the parallel vibration generating mechanisms at wide intervals in the axial direction of the rotating shaft, and the weights are attached to the rotating shaft of the other vibration generating mechanism. Claim 1, wherein a plurality of divided weights are attached close to each other in the axial direction of the rotating shaft, and the divided weights are arranged so as to fit within the interval between the divided weights of the one vibration generating mechanism. Vibratory device for the vibrating work machine described above. (3) A gear is provided at an intermediate position in the axial direction of each rotating shaft of two parallel vibration generating mechanisms, and the rotating shaft of one of the vibration generating mechanisms is provided at both sides of the gear in the axial direction. Split weights are respectively disposed on the rotating shaft of the other vibration generating mechanism, and the split weights provided on the rotating shaft of one of the vibration generating mechanisms are arranged at both sides in the axial direction of the gear provided thereon. 2. The vibration excitation device for a vibrating working machine according to claim 1, wherein a divided weight is disposed at each outer position.