JPH02108725A - Vibrator of variable eccentricity type - Google Patents

Vibrator of variable eccentricity type

Info

Publication number
JPH02108725A
JPH02108725A JP25953488A JP25953488A JPH02108725A JP H02108725 A JPH02108725 A JP H02108725A JP 25953488 A JP25953488 A JP 25953488A JP 25953488 A JP25953488 A JP 25953488A JP H02108725 A JPH02108725 A JP H02108725A
Authority
JP
Japan
Prior art keywords
weight
fixed
floating
eccentricity
rotating shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP25953488A
Other languages
Japanese (ja)
Other versions
JP2664957B2 (en
Inventor
Kikuji Egawa
江川 菊次
Sadachika Mizuta
水田 定親
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Fudo Tetra Corp
Original Assignee
Mitsubishi Heavy Industries Ltd
Fudo Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd, Fudo Construction Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP63259534A priority Critical patent/JP2664957B2/en
Publication of JPH02108725A publication Critical patent/JPH02108725A/en
Application granted granted Critical
Publication of JP2664957B2 publication Critical patent/JP2664957B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

PURPOSE:To automatically adjust the eccentricity of a movable weight in accordance with a rotational speed by disposing an eccentricity changing spring between stationary and movable weights, and by providing upper and lower limit stoppers to the stationary weight. CONSTITUTION:Semicircular stationary weights 8, 8 are fitted on rotary shafts 2, 3, and movable weights 9, 9 which are rotatably supported by an eccentric cylindrical section 16 are fitted thereon. Further, a spring 11 is disposed between the stationary weights 8 and the movable weights 9 so that the eccentricity of the movable weights 9 increases during low speed rotation while it decreases during high speed rotation. Further, there are provided upper and lower limit stoppers 13, 14 so as to limit the movable range of the movable weights 9. With this arrangement, it is possible to automatically adjust the eccentricity of the movable weight in accordance with a rotational speed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、杭の打設や地盤の締め固めに使用される偏心
量可変振動機に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a variable eccentricity vibrator used for driving piles and compacting the ground.

(従来の技術) 従来の振動機を第7図乃至第11図にそれぞれ示した。(Conventional technology) Conventional vibrators are shown in FIGS. 7 to 11, respectively.

先ず第7図の振動機を説明すると、(1)が振動機本体
、(5)がベルト、 (6)が一方の回転軸に固定した
プーリ、 (7) (7)が各回転軸に固定した同期歯
車(8) (8)が略半円状に形成するとともに直線状
部中央を上記各回転軸に固定した固定ウェイト(偏心ウ
ェイト)、(15)が上記振動機本体(1)上に設置し
た原動機で、原動機(15)の回転をベルト(5)→プ
ーリ(6)を介し一方の回転軸及び固定ウェイト(8)
に伝えて、同回転軸及び同固定ウェイト(8)を回転さ
せ、また同一方の回転軸の回転を同期歯車(7)(7)
を介し他方の回転軸及び固定ウェイト(8)に伝え、同
回転軸及び同固定ウェイト(8)を回転させて、一方の
回転軸側の固定ウェイト(8)と、他方の回転軸側の各
固定ウェイト(8)とにより発生する合成遠心力の左右
方向(水平方向)の成分を打ち消す一方、残る上下方向
の成分により上下方向の振動を発生させる。このとき1
回転数を変化させて、振動機の起振力を変化させるよう
にしている。
First, to explain the vibrator in Figure 7, (1) is the vibrator body, (5) is the belt, (6) is the pulley fixed to one rotating shaft, (7) (7) is fixed to each rotating shaft. A fixed weight (eccentric weight) in which the synchronous gear (8) (8) is formed in a substantially semicircular shape and the center of the linear part is fixed to each of the rotating shafts, (15) is mounted on the vibrator main body (1). With the installed prime mover, the rotation of the prime mover (15) is transferred from the belt (5) to the pulley (6) to one rotating shaft and the fixed weight (8).
to rotate the rotary shaft and the fixed weight (8), and the rotation of the same rotary shaft is transmitted to the synchronous gear (7) (7).
is transmitted to the other rotating shaft and fixed weight (8) through the While the left-right (horizontal) component of the synthetic centrifugal force generated by the fixed weight (8) is canceled out, the remaining vertical component generates vertical vibration. At this time 1
By changing the rotation speed, the excitation force of the vibrator is changed.

また第8図は、各固定ウェイト(偏心ウェイ1− ) 
(8)に偏心量可変ピン(18)を着脱可能に設け。
In addition, Fig. 8 shows each fixed weight (eccentric way 1-)
(8) is removably provided with a variable eccentricity pin (18).

同偏心量可変ビン(18)を着脱することにより、各固
定ウェイト(偏心ウェイI−) (8)の偏心■を可変
にする以外、第7図の振動機と同様に構成した振動機で
ある。
This vibrator has the same structure as the vibrator shown in Fig. 7, except that the eccentricity of each fixed weight (eccentricity way I-) (8) is made variable by attaching and detaching the variable eccentricity bin (18). .

また第9図は、偏心ウェイトを、各回転軸に固定した固
定ウェイト(8) (8)と、各回転軸に回転可能に取
付けた遊動ウェイl−(9) (9)と、同各遊動ウェ
イト(9)を上記各固定ウェイト(8)に取付けるボル
ト(19)とにより構成して、ボルト(19)の取付位
置を変えることにより、各固定ウェイト(8)の偏心量
を可変にした以外、第7図の振動機と同様に構成した振
動機である。
Fig. 9 also shows eccentric weights: fixed weights (8) (8) fixed to each rotating shaft, floating ways (9) (9) rotatably attached to each rotating shaft, and each floating The weight (9) is configured with a bolt (19) attached to each fixed weight (8), and the eccentricity of each fixed weight (8) is made variable by changing the mounting position of the bolt (19). This is a vibrator constructed similarly to the vibrator shown in FIG.

また10図は、偏心ウェイトを、各回転軸に固定した固
定ウェイト(8) (8)と、各回転軸に回転可能に取
付けた遊動ウェイ) (9) (9)と、上記各固定ウ
ェイト(8)に回転方向に応じ取付けるストッパ(20
) (20)とにより構成して、ストッパ(20)の取
付位置を変えることにより、各固定ウェイト(8)の偏
心量を可変にした以外、第7図の振動機と同様に構成し
た振動機である。
Figure 10 also shows the eccentric weights fixed to each rotating shaft (8) (8), floating ways (9) (9) rotatably attached to each rotating shaft, and each of the above-mentioned fixed weights (9) (9). 8) to attach the stopper (20) according to the direction of rotation.
) (20), and the vibrator is constructed in the same manner as the vibrator shown in Fig. 7, except that the amount of eccentricity of each fixed weight (8) is made variable by changing the mounting position of the stopper (20). It is.

また第11図は、第1〜第4の回転軸(21)を上下2
段に配設し、同各回転軸(21)に固定ウェイト(偏心
ウェイト(偏心ウェイト)(8)と同期歯車(7)とを
取付け、原動機(15)の回転をベルト(5)−プーリ
(6)を介し第1の回転軸(21)及び同第1の回転軸
(21)に取付けた固定ウェイト(8)に伝えて、同第
1の回転軸及び同固定ウェイト(8)を回転させ、また
同第1の回転軸(21)の回転を各同期歯車(7)を介
し第2〜第4回転軸(21)及び同第2〜第4回転軸(
21)に取付けた固定ウェイト(8)に伝え、同第2〜
第4回転軸(21)及び同第2〜第4回転軸(21)に
取付けた固定ウェイト(8)を回転させて、上下方向の
成分により上下方向の振動を発生させる。このとき1回
転数を変化させて、振動機の起振力を変化させるように
している。
In addition, FIG. 11 shows that the first to fourth rotation axes (21) are
A fixed weight (eccentric weight) (8) and a synchronous gear (7) are attached to each rotating shaft (21), and the rotation of the prime mover (15) is controlled by the belt (5) - pulley ( 6) to the first rotating shaft (21) and the fixed weight (8) attached to the first rotating shaft (21) to rotate the first rotating shaft and the fixed weight (8). , the rotation of the first rotating shaft (21) is transmitted through each synchronous gear (7) to the second to fourth rotating shafts (21) and the second to fourth rotating shafts (
21) and the fixed weight (8) attached to the same number 2~
The fixed weights (8) attached to the fourth rotating shaft (21) and the second to fourth rotating shafts (21) are rotated to generate vertical vibrations due to vertical components. At this time, the number of rotations is changed to change the excitation force of the vibrator.

(発明が解決しようとする課題) 前記第7図に示す従来の振動機では1回転数の変化によ
り起振力を変化させることができるが。
(Problems to be Solved by the Invention) In the conventional vibrator shown in FIG. 7, the excitation force can be changed by changing the number of revolutions.

振幅を変化させることができない。また機械強度から起
振力に限界があって、最大能力を維持しながら振動条件
を変化させることができない。
Unable to change amplitude. Furthermore, there is a limit to the excitation force due to mechanical strength, and it is not possible to change the vibration conditions while maintaining the maximum capacity.

また前記第8,9図に示す従来の振動機では偏心量を変
化させることができ2回転数を選定すれば、起振力の増
大に限界がなくて、最大能力を維持しながら振動条件を
変化させることが可能であるが、偏心量を変化させると
きに、振動機の運転を止め1分解して、内部にある遊動
ウェイト(9)のピン(18)やボルト(19)を脱着
作業を行わなければならない。
Furthermore, in the conventional vibrator shown in Figures 8 and 9, the amount of eccentricity can be changed, and if the number of revolutions is selected to be 2, there is no limit to the increase in the excitation force, and the vibration conditions can be adjusted while maintaining the maximum capacity. However, when changing the amount of eccentricity, stop the operation of the vibrator, disassemble it, and remove and install the pin (18) and bolt (19) of the floating weight (9) inside. It must be made.

また前記第10.11図に゛示す従来の振動機では、振
動機を分解せずに、偏心量を外部から変化させることが
できるが、振動機を一旦止める必要がある。また回転数
を独立的に変化させることができるので、うまく組み合
わせれば、最大能力を維持しながら振動条件を変化させ
ることができるが2組み合わせを間違うと9機械強度の
保持が困難になるという問題があった。
Furthermore, in the conventional vibrator shown in FIG. 10.11, the amount of eccentricity can be changed from the outside without disassembling the vibrator, but it is necessary to temporarily stop the vibrator. Also, since the rotation speed can be changed independently, if you combine them properly, you can change the vibration conditions while maintaining the maximum capacity, but if you combine the two incorrectly, it will be difficult to maintain the mechanical strength. was there.

本発明は前記の問題点に鑑み提案するものであり、その
目的とする処は、遊動ウェイトの偏心量を回転数に応じ
て自動的に調整できる偏心量可変振動機を提供しようと
する点にある。
The present invention has been proposed in view of the above-mentioned problems, and its purpose is to provide a variable eccentricity vibrator that can automatically adjust the eccentricity of a floating weight according to the rotation speed. be.

(課題を解決するための手段) 上記の目的を達成するために1本発明は、偏心ウェイト
の回転により振動を発生させる振動機において、前記偏
心ウェイトを回転軸に固定した固定ウェイトと、同回転
軸の中心に設けた偏心円筒部により回転可能に支持され
た遊動ウェイトとにより構成し、低速回転時には上記遊
動ウェイトの偏心量を大きくし高速回転時には上記遊動
ウェイトの偏心量を小さくするための偏心量可変スプリ
ングを上記固定ウェイトと上記遊動ウェイトとの間に設
け、上記遊動ウェイトの遊動範囲を規制する上限ストッ
パ及び下限ストッパを上記固定ウェイトに設けている。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a vibrator that generates vibrations by rotating an eccentric weight, in which the eccentric weight is fixed to a rotating shaft, and a fixed weight that rotates in the same direction. A floating weight rotatably supported by an eccentric cylindrical part provided at the center of the shaft, and an eccentricity that increases the eccentricity of the floating weight during low-speed rotation and reduces the eccentricity of the floating weight during high-speed rotation. A variable spring is provided between the fixed weight and the floating weight, and the fixed weight is provided with an upper limit stopper and a lower limit stopper for regulating the range of movement of the floating weight.

(作用) 本発明の偏心量可変振動機は前記のように構成されてお
り、原動機を回転させ、その回転を一方の回転軸に伝え
て、同回転軸と固定ウェイトと遊動ウェイトとを回転さ
せ、また同回転軸の回転を同期歯車を介し他方の回転軸
に伝え、同回転軸と固定ウェイトと遊動ウェイトとを反
対方向に回転させて、一方の回転軸側の固定ウェイト及
び各遊動ウェイトと、他方の回転軸側の固定ウェイト及
び遊動ウェイトとにより発生する合成遠心力の左右方向
く水平方向)の成分を打ち消す一方、残る上下方向の成
分により上下方向の振動を発生させる。このとき、上記
各遊動ウェイトに遠心力が作用して、同各遊動ウェイト
に回転力が発生し、この回転力により、固定ウェイトと
遊動ウェイトとの相対角度が自動的に調整される。即ち
、上記各回転軸の回転数が低い場合には、スプリングの
張力が遊動ウェイトに発生する遠心力よりも大きくて、
遊動ウェイトが固定ウェイトの上限ストッパに当接し、
遊動ウェイトが固定ウェイトに完全に重なって、固定ウ
ェイトと遊動ウェイトとの相対角度が最小になる。また
上記各回転軸の回転数が高い場合には、遊動ウェイトに
発生する遠心力がスプリングの張力よりも大きくて、遊
動ウェイトが固定ウェイトの下限ストッパに当接し、遊
動ウェイトの片側が固定ウェイトから突出して、固定ウ
ェイトと遊動ウェイトとの相対角度が最大になる。
(Function) The variable eccentricity vibrator of the present invention is configured as described above, and rotates the prime mover, transmits the rotation to one rotating shaft, and rotates the rotating shaft, fixed weight, and floating weight. In addition, the rotation of the same rotating shaft is transmitted to the other rotating shaft via the synchronous gear, and the rotating shaft, fixed weight, and floating weight are rotated in opposite directions, and the fixed weight and each floating weight on one rotating shaft side are connected to each other. , the left-right (horizontal) components of the composite centrifugal force generated by the fixed weight and floating weight on the other rotating shaft side are canceled out, while the remaining vertical components generate vertical vibration. At this time, centrifugal force acts on each of the floating weights, generating rotational force in each of the floating weights, and the relative angle between the fixed weight and the floating weight is automatically adjusted by this rotational force. That is, when the rotational speed of each rotating shaft is low, the tension of the spring is greater than the centrifugal force generated in the floating weight,
The floating weight contacts the upper limit stopper of the fixed weight,
The floating weight completely overlaps the fixed weight and the relative angle between the fixed and floating weights is minimized. In addition, when the rotational speed of each of the above rotating shafts is high, the centrifugal force generated in the floating weight is greater than the tension of the spring, and the floating weight comes into contact with the lower limit stopper of the fixed weight, causing one side of the floating weight to move away from the fixed weight. As a result, the relative angle between the fixed weight and the floating weight is maximized.

(実施例) 次に本発明の偏心量可変振動機を第1図乃至第6図に示
す一実施例により説明すると、(1)が振動機本体、 
(2) (3)が左右の回転軸、(4)が同回転軸(2
) (3)を上記振動機本体(1)に回転可能に支持す
る軸受、(5)がベルl−、(6)が上記回転軸(2)
の外端部に取付けたプーリ、 (7) (7)が上記回
転軸(2) (3)に固定した同期歯車、(8)が略半
円状に形成するとともに直線状部中央をキー(10)を
介して上記回転軸(2) (3)に固定した合計4個の
固定ウェイト、(16)が同各固定ウェイト(8)の中
心に設けた偏心円筒部、(9)が同偏心円筒部(16)
により回転可能に支持された合計4個の遊動ウェイl−
、(12)が上記各固定ウェイト(7)及び上記各遊動
ウェイト(9)に設けたピン、(11)が同各固定ウェ
イト(7)のピン(12)と同各遊動ウェイト(9)の
ピン(12)との間に懸装したスプリングで、同スプリ
ング(11)が固定ウェイト(7)と遊動ウェイト(9
)と対向面に設けた溝(17) (第3図参照)内に位
置している。また(13)が上記各固定ウェイト(7)
に設けた上限ストッパで、同上限ストッパ(13)は、
遊動ウェイト(9)が固定ウェイト(7)に対して完全
に重なったときに 1勅ウエイト(9)に当接する。ま
た(14)が同各固定ウェイト(7)に設けた下限スト
ッパで。
(Example) Next, the variable eccentricity vibrator of the present invention will be explained using an example shown in FIGS. 1 to 6. (1) is a vibrator main body,
(2) (3) is the left and right rotation axis, (4) is the same rotation axis (2
) (3) is a bearing rotatably supported on the vibrator main body (1), (5) is a bell l-, and (6) is the rotating shaft (2).
(7) is a synchronous gear fixed to the rotating shafts (2) and (3), and (8) is formed into an approximately semicircular shape, with a key ( A total of 4 fixed weights are fixed to the rotating shafts (2) and (3) through 10), (16) is an eccentric cylindrical part provided at the center of each fixed weight (8), and (9) is the eccentric cylindrical part. Cylindrical part (16)
A total of four floating ways l-
, (12) is the pin provided on each fixed weight (7) and each floating weight (9), and (11) is the pin (12) of each fixed weight (7) and each floating weight (9). The spring (11) is suspended between the pin (12) and the fixed weight (7) and the floating weight (9).
) and a groove (17) (see Fig. 3). In addition, (13) is each of the above fixed weights (7)
The upper limit stopper (13) is
When the floating weight (9) completely overlaps the fixed weight (7), it comes into contact with the 1st weight (9). In addition, (14) is a lower limit stopper provided on each fixed weight (7).

同下限ストッパ(14)は、遊動ウェイト(9)が固定
ウェイト(7)に対して最大回転角になったときに。
The lower limit stopper (14) is activated when the floating weight (9) reaches the maximum rotation angle with respect to the fixed weight (7).

遊動ウェイト(9)に当接する。また(15)が上記振
動機本体(1)上に設置した原動機で、上記ベルト(5
)が同原動機(15)の出力軸に取付けたブーりと上記
プーリ(6)との間に懸装されている。
It comes into contact with the floating weight (9). Further, (15) is a prime mover installed on the vibrator main body (1), and the belt (5) is a prime mover installed on the vibrator body (1).
) is suspended between the booby attached to the output shaft of the prime mover (15) and the pulley (6).

次に前記第1図乃至第6図に示す偏心量可変振動機の作
用を具体的に説明する。原動機(15)を回転させ、そ
の回転をベルト(5)−プーリ(6)を介し回転軸(2
)に伝えて、同回転軸(2)と各固定ウェイト(8)と
各遊動ウェイト(9)とを回転させ。
Next, the operation of the variable eccentricity vibrator shown in FIGS. 1 to 6 will be explained in detail. The prime mover (15) is rotated, and the rotation is transferred to the rotating shaft (2) via the belt (5) and pulley (6).
) to rotate the rotating shaft (2), each fixed weight (8), and each floating weight (9).

また同回転軸(2)の回転を同期歯車(7)(7)を介
し回転軸(3)に伝え、同回転軸(3)と各固定ウェイ
ト(8)と各遊動ウェイト(9)とを反対方向に回転さ
せて9回転軸(2)側の各固定ウェイト(8)及び各遊
動ウェイト(9)と1回転軸(3)側の各固定ウェイト
(8)及び各遊動ウェイト(9)とにより発生する合成
遠心力の左右方向(水平方向)の成分を打ち消す一方、
残る上下方向の成分により上下方向の振動を発生させる
。このとき、第4図に示すように遊動ウェイト(9)に
遠心力fが作用して同遊動ウェイト(9)に回転力が発
生する。この回転力Tは1次式により表される。
In addition, the rotation of the rotary shaft (2) is transmitted to the rotary shaft (3) via the synchronous gears (7) (7), and the rotary shaft (3), each fixed weight (8), and each floating weight (9) are connected to each other. By rotating in the opposite direction, each fixed weight (8) and each floating weight (9) on the 9th rotation axis (2) side and each fixed weight (8) and each floating weight (9) on the 1st rotation axis (3) side. While canceling the left-right (horizontal) component of the synthetic centrifugal force generated by
The remaining vertical component generates vertical vibration. At this time, as shown in FIG. 4, centrifugal force f acts on the floating weight (9), and rotational force is generated in the floating weight (9). This rotational force T is expressed by a linear equation.

T= f rz 5in(θ十θo)=mr、  ω”
  rz 5in(θ十〇。) この回転力Tにより、固定ウェイト(8)と遊動ウェイ
ト(9)との相対角度が自動的に調整される。
T= f rz 5in (θ + θo) = mr, ω”
rz 5 inches (θ10.) This rotational force T automatically adjusts the relative angle between the fixed weight (8) and the floating weight (9).

即ち、第5図は1回転軸(2) (3)の回転数が低い
場合の固定ウェイト(8)と遊動ウェイト(9)との相
対角度最小位置を示しており、この場合には。
That is, FIG. 5 shows the minimum position of the relative angle between the fixed weight (8) and the floating weight (9) when the number of rotations of the one-rotation shafts (2) and (3) is low; in this case.

スプリング(11)の張力が遊動ウェイト(9)に発生
する遠心力rよりも大きくて、遊動ウェイト(9)が固
定ウェイト(8)の上限ストッパ(13)に当接し。
The tension of the spring (11) is greater than the centrifugal force r generated in the floating weight (9), and the floating weight (9) contacts the upper limit stopper (13) of the fixed weight (8).

遊動ウェイト(9)が固定ウェイト(8)に完全に重な
って、固定ウェイト(8)と遊動ウェイト(9)との相
対角度が最小になる。また第6図は2回転軸(2) (
3)の回転数が高い場合の固定ウェイト(8)と遊動ウ
ェイト(9)との相対角度最大位置を示しており、この
場合には、遊動ウェイト(9)に発生する遠心力「がス
プリング(11)の張力よりも大きくて、遊動ウェイト
(9)が固定ウェイト(8)の下限ストッパ(14)に
当接し、遊動ウェイ1−(9)の片側が固定ウェイト(
8)から突出して、固定ウェイト(8)と遊動ウェイト
(9)との相対角度が最大になる。
The floating weight (9) completely overlaps the fixed weight (8) and the relative angle between the fixed weight (8) and the floating weight (9) is minimized. Also, Figure 6 shows the 2-rotation axis (2) (
3) shows the maximum relative angle position between the fixed weight (8) and the floating weight (9) when the rotation speed is high; in this case, the centrifugal force generated in the floating weight (9) is caused by the spring ( 11), the floating weight (9) abuts the lower limit stopper (14) of the fixed weight (8), and one side of the floating weight (9) is larger than the tension of the fixed weight (11).
8), the relative angle between the fixed weight (8) and the floating weight (9) becomes maximum.

(発明の効果) 本発明の偏心量可変振動機は前記のように原動機を回転
させ、その回転を一方の回転軸に伝えて。
(Effects of the Invention) The variable eccentricity vibrator of the present invention rotates the prime mover as described above and transmits the rotation to one rotating shaft.

同回転軸と固定ウェイトと遊動ウェイトとを回転させ、
また同回転軸の回転を同期歯車を介し他方の回転軸に伝
え、同回転軸と固定ウェイトと遊動ウェイトとを反対方
向に回転させて、一方の回転軸側の固定ウェイト及び各
遊動ウェイトと、他方の回転軸側の固定ウェイト及び遊
動ウェイトとにより発生する合成遠心力の左右方向(水
平方向)の成分を打ち消す一方、残る上下方向の成分に
より上下方向の振動を発生させる。このとき、上記各遊
動ウェイトに遠心力が作用して、同各遊動ウェイトに回
転力が発生し、この回転力により、固定ウェイトと遊動
ウェイトとの相対角度が自動的に調整される。即ち、上
記各回転軸の回転数が低い場合には、スプリングの張力
が遊動ウェイトに発生する遠心力よりも大きくて、遊動
ウェイトが固定ウェイトの上限ストッパに当接し、!勅
つェイトが固定ウェイトに完全に重なって、固定ウェイ
トと遊動ウェイトとの相対角度が最小になる。
Rotating the same rotating shaft, fixed weight, and floating weight,
In addition, the rotation of the same rotating shaft is transmitted to the other rotating shaft via the synchronous gear, and the rotating shaft, the fixed weight, and the floating weight are rotated in the opposite direction, and the fixed weight and each floating weight on the one rotating shaft side are While the left-right (horizontal) component of the composite centrifugal force generated by the fixed weight and floating weight on the other rotating shaft side is canceled out, the remaining vertical component generates vertical vibration. At this time, centrifugal force acts on each of the floating weights, generating rotational force in each of the floating weights, and the relative angle between the fixed weight and the floating weight is automatically adjusted by this rotational force. That is, when the rotation speed of each rotating shaft is low, the tension of the spring is greater than the centrifugal force generated in the floating weight, and the floating weight comes into contact with the upper limit stopper of the fixed weight. The fixed weight completely overlaps the fixed weight, and the relative angle between the fixed weight and the floating weight is minimized.

また上記各回転軸の回転数が高い場合には、遊動ウェイ
トに発生する遠心力がスプリングの張力よりも太き(て
、遊動ウェイトが固定ウェイトの下限ストッパに当接し
、遊動ウェイトの片側が固定ウェイトから突出して、固
定ウェイトと遊動ウェイトとの相対角度が最大になるの
で、遊動ウェイトの偏心量を回転数に応じて自動的に調
整できる効果がある。
In addition, when the rotational speed of each rotating shaft is high, the centrifugal force generated in the floating weight is greater than the tension of the spring (as a result, the floating weight contacts the lower limit stopper of the fixed weight, and one side of the floating weight is fixed. Since the relative angle between the fixed weight and the floating weight is maximized by protruding from the weight, there is an effect that the amount of eccentricity of the floating weight can be automatically adjusted according to the rotation speed.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係わる偏心量可変振動機の一実施例を
示す平面図、第2図はその側面図、第3図は固定ウェイ
ト及び遊動ウェイトの斜視図、第4.5.6図はその作
用説明図、第7図乃至第11図は従来の振動機の各側を
示す側面図である。 (1)  ・・・振動機本体、 <2) (3)  ・
・・回転軸、(4)・・・軸受、(5)・・・ベルト(
6)・・・プーリ。 (7)(7)・・・同期歯車、(8)・・・固定ウェイ
ト(9)・・・遊動ウェイト、 (10)  ・・・キ
ー、 (11)・・・スプリング、 (12)  ・・
・ピン、 (13)  ・・・上限ストッパ、 (14
)  ・・・下限ストッパ、 (15)・・原動機、 
(16)  ・・・固定ウェイト(8)の偏心円筒部、
 (17)  ・・・溝。 第1図 第2図
Fig. 1 is a plan view showing an embodiment of a variable eccentricity vibrator according to the present invention, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of a fixed weight and a floating weight, and Fig. 4.5.6. is an explanatory diagram of its operation, and FIGS. 7 to 11 are side views showing each side of the conventional vibrator. (1) ... Vibrator body, <2) (3) ・
... Rotating shaft, (4) ... Bearing, (5) ... Belt (
6)...Pulley. (7) (7)...Synchronous gear, (8)...Fixed weight (9)...Floating weight, (10)...Key, (11)...Spring, (12)...
・Pin, (13) ... Upper limit stopper, (14
)...lower limit stopper, (15)...prime mover,
(16) ... Eccentric cylindrical part of fixed weight (8),
(17) ...groove. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] 偏心ウェイトの回転により振動を発生させる振動機にお
いて、前記偏心ウェイトを回転軸に固定した固定ウェイ
トと、同回転軸の中心に設けた偏心円筒部により回転可
能に支持された遊動ウェイトとにより構成し、低速回転
時には上記遊動ウェイトの偏心量を大きくし高速回転時
には上記遊動ウェイトの偏心量を小さくするための偏心
量可変スプリングを上記固定ウェイトと上記遊動ウェイ
トとの間に設け、上記遊動ウェイトの遊動範囲を規制す
る上限ストッパ及び下限ストッパを上記固定ウェイトに
設けたことを特徴とする偏心量可変振動機。
A vibrating machine that generates vibrations by rotation of an eccentric weight, comprising a fixed weight in which the eccentric weight is fixed to a rotating shaft, and a floating weight rotatably supported by an eccentric cylindrical part provided at the center of the rotating shaft. , a variable eccentricity spring is provided between the fixed weight and the floating weight to increase the eccentricity of the floating weight during low-speed rotation and to reduce the eccentricity of the floating weight during high-speed rotation; A variable eccentricity vibrator characterized in that the fixed weight is provided with an upper limit stopper and a lower limit stopper for regulating the range.
JP63259534A 1988-10-17 1988-10-17 Variable eccentricity vibrator Expired - Fee Related JP2664957B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63259534A JP2664957B2 (en) 1988-10-17 1988-10-17 Variable eccentricity vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63259534A JP2664957B2 (en) 1988-10-17 1988-10-17 Variable eccentricity vibrator

Publications (2)

Publication Number Publication Date
JPH02108725A true JPH02108725A (en) 1990-04-20
JP2664957B2 JP2664957B2 (en) 1997-10-22

Family

ID=17335442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63259534A Expired - Fee Related JP2664957B2 (en) 1988-10-17 1988-10-17 Variable eccentricity vibrator

Country Status (1)

Country Link
JP (1) JP2664957B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0460015A (en) * 1990-06-27 1992-02-26 Kinki:Kk Variable vibration generator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106638597B (en) * 2017-03-05 2018-10-26 李沛 A kind of piling machine contained sill may and burst

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111842U (en) * 1983-01-13 1984-07-28 開成工業株式会社 hydraulic drilling rig

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111842U (en) * 1983-01-13 1984-07-28 開成工業株式会社 hydraulic drilling rig

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0460015A (en) * 1990-06-27 1992-02-26 Kinki:Kk Variable vibration generator

Also Published As

Publication number Publication date
JP2664957B2 (en) 1997-10-22

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