JP2002066458A - Apparatus and method for controlling phase of machine having plurality of rotary systems - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regulate the mutual phase difference between the rotary systems of a machine having two rotary systems so as to increase and decrease the same while continuing operation without stopping rotation by improving technique for controlling the mutual phase difference between the rotary systems. SOLUTION: Two rotary shafts rotated synchronously (or rotated in a constant rotational speed ratio) with respect to two rotary systems are fitted concentrically to constitute an inner shaft 25 and an outer pipe 26, and the body 20a of a reversible revolving mechanism 20 is connected to the outer pipe 26 and the revolving shaft 20b of the reversible revolving mechanism is connected to the inner shaft 25. The fixed phase gear 27 fixed to the inner shaft 25 is meshed with the gear of the rotary system driven by a drive motor (not shown in a drawing) and the movable phase gear 28 fixed to the outer pipe 26 is meshed with the gear of the rotary system not directly connected to the drive motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for changing the phase difference of a machine having a plurality of rotating systems while continuing to rotate without stopping the operations of the plurality of rotating systems. .

[0002]

2. Description of the Related Art Among the techniques for controlling the phase difference between a plurality of rotating systems, the simplest technique is to control two rotating systems. If the phase difference between the two rotating systems can be controlled arbitrarily, the phase difference between the three or more rotating systems can be controlled in combination. For this reason, in the present invention, phase difference control of two rotating systems will be mainly described.

[0003] When the phase difference is changed as required while rotating the two rotation systems basically synchronously, the two rotation systems are required.
It is relatively easy to temporarily stop the operation of the machine having the rotating system of the system and adjust the phase difference. However, it is not easy to control the phase difference while continuing to rotate the rotating member without stopping the operation of the machine.
Techniques for adjusting the mutual phases while rotating each of the two rotation systems are roughly classified as follows. a. A method in which each of the two systems of rotating members is rotationally driven by a separate rotating drive device (for example, an electric motor or a hydraulic motor), and the rotation of both rotary drive devices is controlled to obtain a desired phase difference. b. While rotating one of the two rotating members by a rotary drive device, the rotation of the one rotating member is transmitted to the other rotating member, and the mechanism for this transmission is devised to control the leading and lagging. How to do.

According to the method described in the above item a (rotary drive), two rotary drive devices must be provided, and
The two rotary drive devices must always be linked and controlled. In addition, it is not easy to strictly rotate the two rotating members synchronously. According to the method of the above-mentioned item b (mutual transmission), there is a difficulty that both rotating systems must be transmitted to each other so that the phase difference can be controlled.
Suitable for strictly rotating both rotating systems synchronously, and
One rotary drive is enough. Generally speaking, when temporarily controlling the phase of two rotating members that rotate synchronously in principle, the method described in the above item b (one of which is driven to rotate and the other is transmitted to the other) is suitable. I have.

[0005] There are various types of machines that have two rotation systems and that need to control the phase difference between the two rotation systems.
One example is an eccentric weight type vibrator. The exciter is
It is used not only for pile driving machines and other construction machines, but also for industrial machines in general, such as crushers, agitators, and mixers. This is not a problem for small exciters used in laboratories, but for large vibration devices (exciters) used in construction and industrial machinery, the problem is that ground structures such as buildings and mechanical devices resonate. There is a need for phase control to prevent such resonance.

SUMMARY OF THE INVENTION In order to solve the problem relating to the resonance of the exciter, the present invention studies a technique for controlling the rotational phase difference of the eccentric weight for excitation while continuing the operation of the exciter without interruption. As a result of the development, a method and apparatus for controlling a phase difference while continuing operation of "a general machine having a plurality of rotating systems" which is not limited to an exciter have been created. Under these circumstances, the necessity of phase difference control will be described below with respect to the prior art as the background of the problem to be solved by the present invention, using a vibration exciter as an example.

FIG. 6 is a schematic diagram for explaining vibration pollution in a pile driving operation. This figure shows a state in which the vibration device 6 is suspended by the crane boom 5, the upper end of the pile 7 is gripped by the chuck 6 a of the vibration device 6, and the pile 7 is vibrated and driven into the ground. Is schematically depicted. When the lower end of the stake 7 is brought into contact with the ground surface to start the stakeout operation, if the vibration device 6 is fully operated from the beginning, the surface wave a generated on the stakeout surface surface is hardly attenuated and the nearby private house 8 is not attenuated. , Causing vibration pollution problems. Here, the vibration device 6
If the vibrating force can be adjusted arbitrarily, the pile driving operation is started while giving a slight vibration in addition to the weight of the pile 7, and after driving several meters, the vibration may be gradually increased. Pile 7
When the epicenter corresponding to the lower end of the ground becomes deep, the underground wave b is attenuated on the way to the private house 8, so that the vibration pollution is negligible.

FIG. 7 is a table showing changes in the vibration frequency at the time of starting and stopping the operation of the vibration device. The horizontal axis represents time. Start of operation time t _0, between time t ₁ to reach the rated operating state, frequency rises sharply as shown by arrow c. During the frequency increase of the natural frequency n ₁ of the _ground, and passing through the natural frequency n ₂ of the crane boom. However, since the rotational speed increase period T ₁ at the start operation is generally short (e.g., about 3 seconds), the resonance problem when frequency of the vibration device matches the natural frequency, can be usually ignored it can. However, between the time t ₂ of stopping the energization of the motor of the vibrating device 6 (not shown) to the time t ₃ when the rotary shaft is stopped is gradually decelerated as indicated by the arrow d while continuing to rotate at a rotational axis of inertia .

[0009] Since the rotational speed decrease period T ₂ of the above is relatively long (e.g. about 50 seconds), the middle when passing through the natural frequency n ₂ of the crane boom, the crane boom resonates damaged There is a risk of suffering. Further, when passing through the natural frequency n ₁ of the ground, possibility there occur vibration pollution by the resonance of the ground. It stops the energization of the motor in said time t _2, the if it is possible to zero the vibratory force by changing the rotation phase of the rotary weight of the vibration device, issues resonance during shutdown operation of the vibration device Can be prevented.

[0010] Next, looking at the amount of energy supplied to the vibrating device, while the rotational speed of the vibration device 6 from the time t ₀ of the up t ₁ is increased, (not shown) an eccentric weight of the vibrating device If the speed is increased while generating vibrations, a large-capacity motor or large-capacity power supply equipment is required to drive the motor. In this case, the operation is started in a state where the vibration force is reduced to zero by changing the rotation phase of the eccentric weight of the vibration device, and if the vibration force can be exerted after reaching the rated rotation speed, the motor capacity is increased. It is economical because the power supply capacity can be reduced. This is because, after reaching the rated rotation speed, there is no need to store any more rotational energy in the rotating member, and the operation can be continued by replenishing energy sufficient to compensate for vibration damping.

[0011] A similar problem also occurs in a vibration device (vibrator) used in addition to the vibrator. FIG. 8 is a partially cutaway view of a sieve plant provided with a vibration device. The sieving device 11 is installed in a building 12. The object to be processed is introduced into the sieve device by the carry-in conveyor 13 as shown by an arrow e. The vibrating device 6 is provided in the sieve device 11,
The mesh member (the sieve body) is vibrated.
The component having a large particle diameter in the object to be treated introduced as shown by the arrow e falls down the slope as shown by the arrow f, and the component having a small particle diameter is sieved as shown by the arrows g and g to the hopper. Accumulate. The large particle size component is loaded on the unloading conveyor 14 by the chute 33, and the small particle size component is mounted on the unloading vehicle 15.

In such a sieve plant as well, when the vibrating device 6 is started and its rotation speed is gradually increased and the generated frequency is gradually increased, the generated frequency is changed to the building 12.
When the building resonates with the natural frequency of (resonance), the building vibrates at home. Such a resonance phenomenon not only deteriorates the working environment conditions of the employees, but also damages the building. In addition, there is a high possibility of causing vibration and noise pollution to the neighborhood. In order to prevent such problems caused by resonance, without stopping the rotation of the vibration exciter, while passing through a rotation speed region corresponding to the resonance frequency while increasing the rotation speed in a state where vibration does not occur, After that, a technique is required in which a state in which vibration is generated is transferred to a steady operation.

In view of the above circumstances, an adjustment technique for increasing or decreasing the vibrating force of a vibrator has been developed and is known. Next, the principle of increasing and decreasing the excitation force of the exciter will be described. FIG. 9 is a view for explaining a known technique for changing the vibrating force by a combination of two eccentric weights. FIG. 9A shows two eccentric weights exhibiting the maximum vibrating force. FIG. 4B is a schematic diagram illustrating a state in which the vibrating force is moderate, FIG. 4C is a schematic diagram illustrating a state in which the vibratory force is slightly small, and FIG. 4D is a state in which the vibratory force is zero. FIG. Of the two eccentric weights shown in FIG. 9A, 9 is a fixed eccentric weight fixed to the rotating shaft 2B ', and 10 can rotate relatively to the rotating shaft 2C'. It is a movable eccentric weight. In the present invention, the fixed eccentric weight is an eccentric weight that is locked with respect to the rotation axis and is a member that rotates together with the rotation axis. . The relative positions of the two eccentric weights 9 and 10 in FIG. 9A are in a state where the phase difference is zero.

Therefore, when the two eccentric weights 9 and 10 are rotated in synchronization with the gears 4B 'and 4C' in the state shown in FIG. 9A, a vibrating force is generated. In the state of FIG. 9D,
Since the center of gravity of each of the two eccentric weights 9 and 10 is always symmetrical with respect to the reference line MM (vertical bisector of the line connecting the two rotation axes 2B 'and 2C'), The excitatory force in the direction is zero. For convenience of description, a state where the phase difference between the two eccentric weights is 180 degrees and the total eccentric moment of the two eccentric weights is zero as shown in FIG. 9D is referred to as a reference state.

FIGS. 9 (B) and 9 (C) show intermediate states of the above (A) and (D), respectively, so that the vertical direction is smaller than that of FIG. 9 (A) and larger than that of FIG. 9 (D). Generates vibratory force. (B) is closer to the state of FIG. (A) than FIG. (C), so that (A), (B), (C), (D) ). Since FIG. 9 shows the principle of the vibrating force increase / decrease control, FIG.
The two rotating shafts 2B ', 2C' are connected to the synchronous rotating gears 4B ', 4B.
Although it is depicted as being rotated synchronously at C ', two eccentric weights can be provided on one rotating shaft to simplify the structure. FIG. 10 is a schematic view of a mechanism in which a fixed eccentric weight is fixed to a common rotating shaft and the movable eccentric weight can adjust the relative rotation angle position with respect to the common rotating shaft.

The fixed eccentric weight 9 is fixed to the rotating shaft 2 and rotates together. The movable eccentric weight 10 can be adjusted by changing the mounting angle position with respect to the rotary shaft 2 as shown by the arc arrows α-β, and can maintain the adjusted state. The state depicted in FIG. 10 is shown in FIG.
Exciting force is moderate, corresponding to the state shown in (B).
From this state, when the movable eccentric weight is rotated and fixed in the direction of arrow α, the vibrating force decreases as the state approaches the state of FIG. 9D. Further, when it is rotated in the direction of the arrow β, it approaches the state shown in FIG. 9A and the vibrating force increases. The vibrating force is adjusted as described above. It is understood from the principle of the excitation force adjustment described above that “excitation force control technology is a phase difference control technology”. The technique required for the excitation force control is a phase difference control technique. If the phase difference can be controlled, the excitation force can be controlled.

[0017]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has basically been made of an eccentric weight type capable of increasing and decreasing the vibrating force while continuing rotation. Exciter control device and control method thereof ". The above technology can also be implemented as a "unit device that controls the phase of an eccentric weight by mounting it on a ready-made eccentric weight type vibrator", and more widely "a device mounted with a plurality of rotating systems. Thus, the present invention can be implemented as a unit device that controls the phase difference between the two rotating systems.

[0018]

The basic principle of the present invention created to achieve the above object will be briefly described with reference to FIG. 5 corresponding to one embodiment. In order to improve the technology for controlling the phase difference between the rotating systems in a machine having two rotating systems so that the operation can be continued without stopping the rotation, the above-mentioned phase difference can be increased or decreased. Two rotation shafts that rotate synchronously (or rotate at a constant rotation speed ratio) with respect to each of the two rotation systems are fitted concentrically to form an inner shaft 25 and an outer tube 26. The body 20a is connected to the outer tube 2
6, the rotation shaft 20b of the reversible rotation mechanism is connected to the inner shaft 25.
To each other. A fixed phase gear 27 fixed to the inner shaft 25 is meshed with a rotating gear driven by a drive motor (not shown), and a movable phase gear 28 fixed to the outer tube 26 is directly connected to the drive motor. Not meshed with rotating gears.

The structure of the apparatus according to the first aspect of the present invention is such that the inner shaft and the outer tube are fitted concentrically and relatively rotatably, and are rotatably supported by the exciter case. A fixed eccentric weight and a movable eccentric weight are attached to each of the inner shaft and the outer tube, and one end of the inner shaft is exposed to the outside of the exciter case. The other end of the inner shaft is exposed to the outside of the case together with the outer tube, and a rotary shaft of a hydraulic reversible rotary mechanism is connected to the other end of the inner shaft. Is connected,
And, when the body of the reversible rotating mechanism is connected to the end of the outer tube and the rotary drive device is operated, the fixed eccentric weight and the movable eccentric weight are synchronously rotated, and the reversible When the rotation mechanism is operated, a phase difference between the fixed eccentric weight and the movable eccentric weight is changed.

According to the apparatus of the first aspect described above, one end of the inner shaft is exposed outside the exciter case, and a rotary drive device (for example, a hydraulic motor) is connected to this end. Since the fixed eccentric weight is attached to the inner shaft, the fixed eccentric weight is directly connected to the rotary driving device, and is connected to the output shaft of the rotary driving device. The shaft and the fixed eccentric weight are forcibly synchronized and rotated. On the other hand, since the outer tube is fitted concentrically to the inner shaft but is not restricted in relative rotation, and the movable eccentric weight is attached to this outer tube, the fixed eccentric weight is used. The movable eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same center of rotation. Further, since the inner shaft is connected to the rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor) and the outer tube is connected to the body of the reversing rotating mechanism, the rotating shaft of the reversible rotating mechanism is When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. Accordingly, the movable eccentric weight attached to the outer tube is advanced or retarded by the angle θ with respect to the fixed eccentric weight attached to the inner shaft. The above-described phase-advancing and lagging operations are performed while the body of the reversible rotation mechanism rotates together with the outer tube and the rotation axis rotates together with the inner shaft. The operation can be performed without stopping the rotation of the device, that is, while continuing the operation of the entire device. The phase of the movable eccentric weight is 180 relative to the fixed eccentric weight.
If the eccentric weight can be advanced or retarded, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to a second aspect of the present invention, the inner shaft and the outer tube are concentrically and relatively rotatably fitted to each other, and are rotatably supported by the exciter case. A fixed eccentric weight and a movable eccentric weight are attached to each of the inner shaft and the outer tube, and one end of the inner shaft is
The end of the outer tube penetrates through the wall of the exciter case, and the end of the inner shaft is connected to a turning shaft of a hydraulic reversible turning mechanism, and the end of the outer tube is The body of the reversible rotation mechanism is connected, and the rotation axis of the reversible rotation mechanism penetrates the body, and both ends of the reversible rotation mechanism project from the body. Among them, the rotary shaft of the rotary drive device is connected to an end opposite to the end connected to the inner shaft.

According to the apparatus of the second aspect described above, one end of the inner shaft is connected to the turning shaft of the reversible turning mechanism, and the other end of the turning shaft is connected to a rotary driving device (for example, Hydraulic motor), and a fixed eccentric weight is attached to the inner shaft, so that the fixed eccentric weight is directly connected to the rotary driving device, The output shaft of the driving device, the rotating shaft of the reversible rotating mechanism, the inner shaft, and the fixed eccentric weight are forcibly synchronized and rotated.
On the other hand, since the outer tube is fitted concentrically to the inner shaft but is not restricted in relative rotation, and the movable eccentric weight is attached to this outer tube, the fixed eccentric weight is used. The movable eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same center of rotation. further,
Since the inner shaft is connected to the rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor) and the outer tube is connected to the body of the reversing rotating mechanism, the rotating shaft of the reversible rotating mechanism is connected to the body. On the other hand, when the outer tube is rotated forward and backward by the angle θ, the outer tube is advanced or delayed by the angle θ with respect to the inner axis. Accordingly, the movable eccentric weight attached to the outer tube is advanced or retarded by the angle θ with respect to the fixed eccentric weight attached to the inner shaft. The above-described phase-advancing and lagging operations are performed while the body of the reversible rotation mechanism rotates together with the outer tube and the rotation axis rotates together with the inner shaft. The operation can be performed without stopping the rotation of the device, that is, while continuing the operation of the entire device. If the phase of the movable eccentric weight can be advanced or delayed by 180 degrees with respect to the fixed eccentric weight, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to a third aspect of the present invention, the inner shaft and the outer tube are concentrically and rotatably fitted to each other, and are rotatably supported by the exciter case. A movable eccentric weight and a fixed eccentric weight are attached to each of the inner shaft and the outer tube, and one end of the inner shaft is
The end of the outer tube passes through the wall of the exciter case together with the end of the outer tube, and the end of the inner shaft is connected to the turning shaft of a hydraulic reversible turning mechanism. The body of the reversible rotating mechanism is connected, and the body of the rotary driving device is fixedly supported on the exciter case, and the rotating shaft of the rotary driving device is connected to the reversible rotating device. It is characterized by being connected to the body of the mechanism.

According to the third aspect of the present invention, one end of the outer tube is exposed to the outside of the exciter case, and the end of the outer tube is rotated through the body of the reversible rotating mechanism. (For example, a hydraulic motor) is connected, and a fixed eccentric weight is attached to the outer tube, so that the fixed eccentric weight is directly connected to the rotary drive device, The output shaft, the inner shaft, and the fixed eccentric weight of the rotary drive device are forcibly synchronized and rotate. On the other hand, the inner shaft is fitted concentrically with the outer tube but is not restricted in relative rotation, and the movable eccentric weight is attached to the inner shaft. The movable eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same center of rotation. Further, the inner shaft is a rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor),
Since the outer tube is connected to the body of the reversible rotating mechanism, when the rotating shaft of the reversible rotating mechanism is turned forward and backward by an angle θ with respect to the body, the outer tube is connected to the inner shaft. On the other hand, the phase is advanced or retarded by the angle θ. Accordingly, the movable eccentric weight attached to the inner shaft is advanced or retarded by the angle θ with respect to the fixed eccentric weight attached to the outer tube. As mentioned above,
The action of the lag is performed while the body of the reversible rotating mechanism is rotating together with the outer tube and the rotating shaft is rotating together with the inner shaft, so that the rotation of the rotary driving device is stopped. Without performing the operation, that is, while continuing the operation of the entire apparatus. If the phase of the movable eccentric weight can be advanced or delayed by 180 degrees with respect to the fixed eccentric weight, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to a fourth aspect of the present invention, in addition to the constituent features of the first to third aspects of the present invention, a synchronous transmission gear is provided for each of the fixed eccentric weight and the movable eccentric weight. Is mounted, the fixed eccentric weight is different from the fixed eccentric weight is synchronously rotated via a synchronous transmission gear, and at least one of the two fixed eccentric weights is directly Alternatively, the movable eccentric weight is rotated indirectly, and the movable eccentric weight different from the movable eccentric weight is rotated synchronously via a synchronous transmission gear.

According to the apparatus of the fourth aspect described above, the fixed eccentric weight that is rotationally driven by the rotary driving device and the movable eccentric weight that is rotationally driven by the rotary driving device via the reversible rotating mechanism. Are basically rotated synchronously, and are advanced or retarded in accordance with the rotation angle of the reversible rotation mechanism, so that the vibrating force can be increased or decreased while rotating. The fixed eccentric weights are rotated synchronously with each other, the plurality of movable eccentric weights are rotated synchronously with each other, and the fixed eccentric weights that rotate synchronously as described above, and the movable eccentrics that rotate synchronously The phase difference from the weight group is advanced or retarded according to the rotation angle of the reversible rotation mechanism. This makes it possible to obtain a strong vibrating force with a compact vibrator, and to adjust the increase / decrease of the vibrating force.

According to a fifth aspect of the present invention, there is provided a device comprising: a unit case mountable to a case of a machine having a plurality of rotating systems; and a composite rotating shaft comprising an inner shaft and an outer tube. The inner shaft and the outer tube are fitted so as to be relatively rotatable while maintaining concentricity, and the inner shaft and the outer tube are rotatably supported with respect to the unit case,
Gears are mounted on each of the inner shaft and outer tube,
And a body of a hydraulic reversible rotating mechanism is connected to the outer tube, and a rotating shaft of the reversible rotating mechanism is connected to the inner shaft, and the unit case includes: The member housed in the unit case and the member mounted in the unit case form a unit assembly.

According to the apparatus of the fifth aspect described above, since a member for controlling the phase difference is incorporated in a unit case that can be mounted on a case of a machine having a plurality of rotating systems, it is separately configured. By mounting the unit case on a machine having a plurality of rotating systems, the phase difference between the plurality of rotating systems of the machine can be easily controlled, and the range of application is wide. In addition, since the main constituent members are housed or mounted in the unit case, it is possible to configure a phase control device having excellent marketability and high commercial value as a unit device. In addition, since the gears are mounted on each of the inner shaft and the outer tube forming the compound rotary shaft, when the unit case is mounted on the case of the machine, the inner shaft and the outer tube are almost automatically formed. Are communicatively connected to a plurality of rotating systems of the machine. The unit device having the structure of claim 5 has a role of phase difference control, but it is also possible to install a device for rotational driving for rotating one of the inner shaft and the outer tube, The rotational drive may be provided on the controlled machine side, and the unit device of the present invention may be dedicated to phase difference control. As described above, the invention according to the present invention has a large degree of design freedom when implementing the invention.

According to a sixth aspect of the present invention, there is provided a method for forming a composite rotary shaft by fitting an inner shaft and an outer tube concentrically and relatively rotatably, and combining the composite rotary shaft with an exciter case. , And a fixed eccentric weight is fixed to the inner shaft, and a movable eccentric weight is fixed to the outer tube, and a rotation driving device is attached to one end of the inner shaft. While connecting the rotating shaft of the, connected the rotating shaft of the reversible rotating mechanism to the other end of the inner shaft, and connected the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft, By operating the reversible rotation mechanism, the inner shaft and the outer tube are configured to be relatively rotated, and the rotation driving device is operated to rotate the inner shaft of the composite rotation shaft. , While rotating the fixed eccentric weight fixed to this,
In a state where the rotation axis of the reversible rotation mechanism is rotated in synchronization with the rotation of the inner shaft, and the rotation axis of the reversible rotation mechanism is relatively stopped with respect to the body, The composite rotary shaft outer tube connected to the body is rotated in synchronization with the inner shaft, and the movable eccentric weight fixed to the outer tube is rotated synchronously with the fixed eccentric weight fixed to the inner shaft. ,
By operating the reversible rotation mechanism in a state where the fixed eccentric weight and the movable eccentric weight are synchronously rotated as described above, by relatively rotating the rotation shaft with respect to the body, A fixed eccentric weight fixed to the inner shaft and a movable eccentric weight fixed to the outer tube by relatively rotating the outer tube connected to the body and the inner shaft connected to the rotating shaft. The phase difference with the weight is adjusted.

According to the above-described method of the present invention, the fixed eccentric weight and the movable eccentric weight can be mutually concentrically and relatively rotated by the composite shaft including the inner shaft and the outer tube. In addition, it is supported rotatably with respect to the exciter case,
In addition, the fixed eccentric weight is constrained to rotate at the same rotational speed and the same phase as the inner shaft, and the movable eccentric weight is constrained to rotate at the same rotational speed and the same phase as the outer tube. The inner shaft is rotationally driven by a rotary driving device with respect to an exciter case, which is a stationary member, and accordingly, the fixed eccentric weight is rotated while being directly connected to the rotary driving device. The outer tube and the movable eccentric weight are indirectly driven to rotate by the rotation driving device via the inner shaft and the reversible rotation mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism. When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. Accordingly, the phase difference between the movable eccentric weight attached to the outer tube and the fixed eccentric weight attached to the inner shaft becomes 1
In the standard state of 80 degrees, the total eccentric moment becomes zero and the vibrating force disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the intermediate state between the state of the maximum vibrating force and the state of the minimum vibrating force, it can be changed steplessly with the rotation of the rotating shaft of the reversible rotating mechanism. Since the increase / decrease adjustment operation can be performed without interrupting the operation of the exciter, the practical value is large.

According to a seventh aspect of the present invention, a composite rotating shaft is formed by fitting an inner shaft and an outer tube concentrically and rotatably relative to each other, and this composite rotating shaft is attached to a vibrator case. , And a fixed eccentric weight is fixed to the inner shaft, and a movable eccentric weight is fixed to the outer tube. Is connected to the inner shaft, the other end of the reversible rotating mechanism is connected to a rotating shaft of a rotary drive device, and the body of the reversible rotating mechanism is connected to an outer tube of the composite rotating shaft. By operating the reversible rotation mechanism, the inner shaft and the outer tube are configured to be relatively rotated, and the rotation driving device is operated to change the inner shaft of the composite rotation shaft. Rotating the fixed eccentric weight fixed to the inner shaft, The rotation shaft of the reversible rotation mechanism is rotated in synchronization with the rotation, and is connected to the body in a state where the rotation axis of the reversible rotation mechanism is relatively stopped with respect to the body. The composite rotary shaft outer tube is rotated in synchronization with the inner shaft, and the movable eccentric weight fixed to the outer tube is rotated synchronously with the fixed eccentric weight fixed to the inner shaft, as described above. When the fixed eccentric weight and the movable eccentric weight are synchronously rotating, the reversible rotating mechanism is operated, and the rotating shaft is relatively rotated with respect to the body, thereby connecting to the body. The fixed outer eccentric weight fixed to the inner shaft and the movable eccentric weight fixed to the outer tube by relatively rotating the outer tube and the inner shaft connected to the rotating shaft. The phase difference is adjusted.

According to the above-described method of the present invention, the fixed eccentric weight and the movable eccentric weight can be mutually concentrically and relatively rotated by the composite shaft including the inner shaft and the outer tube. In addition, it is supported rotatably with respect to the exciter case,
In addition, the fixed eccentric weight is constrained to rotate at the same rotational speed and the same phase as the inner shaft, and the movable eccentric weight is constrained to rotate at the same rotational speed and the same phase as the outer tube. The inner shaft is rotationally driven by a rotary driving device with respect to an exciter case, which is a stationary member, via a rotating shaft of a reversible rotating mechanism, and a fixed eccentric weight is attached to the rotary driving device. It can be rotated in a directly connected state. The outer tube and the movable eccentric weight are rotationally driven indirectly by the rotary driving device via the body of the reversible rotating mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism.
The rotation axis of the reversible rotation mechanism is positive by an angle θ with respect to the body,
When reversed, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. As a result, when the phase difference between the movable eccentric weight attached to the outer tube and the fixed eccentric weight attached to the inner shaft becomes a standard state of 180 degrees, the total eccentric moment becomes zero and the vibrating force becomes zero. Disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the intermediate state between the state of the maximum vibrating force and the state of the minimum vibrating force, it can be changed steplessly with the rotation of the rotating shaft of the reversible rotating mechanism. Since the increase / decrease adjustment operation can be performed without interrupting the operation of the exciter, the practical value is large.

According to an eighth aspect of the present invention, a composite rotary shaft is formed by fitting the inner shaft and the outer tube concentrically and relatively rotatably, and the composite rotary shaft is connected to the exciter case. , And a fixed eccentric weight is fixed to the inner shaft, and a movable eccentric weight is fixed to the outer tube, and a rotation driving device is attached to one end of the inner shaft. While connecting the rotating shaft of the reversible rotating mechanism to the other end of the inner shaft, connecting the rotating shaft of the reversible rotating mechanism to the inner shaft of the composite rotating shaft, By connecting the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft, and connecting the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft, and operating the reversible rotating mechanism. , The inner shaft and the outer tube are configured to be relatively rotated, and Actuate to rotate the outer tube of the composite rotary shaft, rotate the movable eccentric weight fixed to it, and rotate the body of the reversible rotating mechanism in synchronization with the rotation of the outer tube, and In a state in which the rotating shaft of the reversible rotating mechanism is relatively stopped with respect to the body, the composite rotating shaft outer tube connected to the body is rotated in synchronization with the inner shaft, and The movable eccentric weight fixed to the outer tube is synchronously rotated with the fixed eccentric weight fixed to the inner shaft, and the fixed eccentric weight and the movable eccentric weight are synchronously rotated as described above. By actuating the reversible rotating mechanism in and rotating the rotating shaft relatively to the body, the outer tube connected to the body and the inner shaft connected to the rotating shaft are relatively moved. Turn it to fix the eccentric weight fixed to the inner shaft and the outer tube. And adjusting the phase difference between the movable eccentric weight being worn.

According to the above-described method of the present invention, the fixed eccentric weight and the movable eccentric weight can be mutually concentrically and relatively rotated by the composite shaft including the inner shaft and the outer tube. In addition, it is supported rotatably with respect to the exciter case,
The fixed eccentric weight is constrained to rotate at the same rotational speed and phase as the outer tube, and the movable eccentric weight is constrained to rotate at the same rotational speed and phase as the inner shaft. The outer tube is rotationally driven by a rotary drive device via a body of a reversible rotating mechanism to a vibration exciter case which is a stationary member, and accordingly, a fixed eccentric weight is directly connected to the rotary drive device. It is rotated in the state of being. The inner shaft and the movable eccentric weight are rotationally driven indirectly by the rotary driving device via a reversible rotating mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism. When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. As a result, when the phase difference between the movable eccentric weight attached to the inner shaft and the fixed eccentric weight attached to the outer pipe becomes a standard state of 180 degrees, the total eccentric moment becomes zero and the vibrating force Disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the intermediate state between the state of the maximum vibrating force and the state of the minimum vibrating force, it can be changed steplessly with the rotation of the rotating shaft of the reversible rotating mechanism. Since the increase / decrease adjustment operation can be performed without interrupting the operation of the exciter, the practical value is large.

According to the ninth aspect of the present invention, in addition to the constituent elements of the sixth to eighth aspects of the present invention,
An eccentric weight shaft separate from the composite rotating shaft is rotatable with respect to the exciter case, and is disposed parallel to the composite rotating shaft. Eccentric weight, and a movable eccentric weight separate from the movable eccentric weight,
Attached to the eccentric weight shaft and synchronously rotating the fixed eccentric weights formed separately from each other via a synchronous transmission gear, and synchronously transmitting the movable eccentric weights formed separately to each other. It is characterized in that it is rotated synchronously via a gear.

According to the method of the ninth aspect described above, the fixed eccentric weight that is rotationally driven by the rotary driving device and the movable eccentric weight that is rotationally driven by the rotary driving device via the reversible rotating mechanism. Are basically rotated synchronously, and are advanced or retarded in accordance with the rotation angle of the reversible rotation mechanism, so that the vibrating force can be increased or decreased while rotating. The fixed eccentric weights are rotated synchronously with each other, the plurality of movable eccentric weights are rotated synchronously with each other, and the fixed eccentric weights that rotate synchronously as described above, and the movable eccentrics that rotate synchronously The phase difference from the weight group is advanced or retarded according to the rotation angle of the reversible rotation mechanism. This makes it possible to obtain a strong vibrating force with a compact vibrator, and to adjust the increase / decrease of the vibrating force.

According to a tenth aspect of the present invention, there is provided a method for controlling a phase of a machine having two systems of rotation shafts which are basically synchronously rotated and whose phase difference is intentionally changed. For a unit equipment case that can be mounted on the casing, a composite shaft composed of an inner shaft and an outer tube is rotatably supported, and a transmission gear is attached to each of the inner shaft and the outer tube. The gears can be transmitted to the two rotation shafts, and the rotation shaft of the reversible rotation mechanism is the inner shaft, the body of the reversible rotation mechanism is the outer tube, Connect each,
If the two rotating shafts of the machine are to be synchronously rotated with a constant phase difference, the rotating shaft of the reversible rotating mechanism is stopped relatively to the body, and the relative rotation between the inner shaft and the outer tube is reduced. By preventing rotation, keeping the phase difference between the respective gears constant,
When the phase difference between the two rotating shafts of the machine is to be changed, the rotating shaft of the reversible rotating mechanism is rotated with respect to the body, and the inner shaft is relatively rotated with respect to the outer tube. And changing a phase difference between the respective gears.

According to the tenth aspect of the present invention, since the phase difference controlling member is incorporated in a unit case that can be mounted on a case of a machine having a plurality of rotating systems, a separate structure is provided. By attaching the unit case to a machine having a plurality of rotating systems, the phase difference between the plurality of rotating systems of the machine can be easily controlled,
Its application range is wide. In addition, since the main constituent members are housed or mounted in the unit case, it is possible to configure a phase control device having excellent marketability and high commercial value as a unit device. In addition, since the gears are mounted on each of the inner shaft and the outer tube forming the compound rotary shaft, when the unit case is mounted on the case of the machine, the inner shaft and the outer tube are almost automatically formed. Are communicatively connected to a plurality of rotating systems of the machine.

[0039]

FIG. 1 is a schematic sectional view showing a first embodiment of the present invention.
FIG. The inner shaft 16 is rotatably fitted into the outer tube 17 to form a composite rotating shaft Com. I have. The fixed eccentric weight 9 is fixed to the inner shaft 16. FIG. 1 showing an embodiment of the present invention.
In FIG. 5 to FIG. 5, the portion where the key is drawn in the fitting portion of the shaft member indicates that the relative rotation is prevented.

One end (the left end in FIG. 1) of the inner shaft 16 is exposed to the outside of the exciter case 18, and a rotary drive device (a hydraulic motor in this example) 19 is exposed to the exposed end. Rotary output shaft is connected. The key mark indicates that relative rotation is impossible (the same applies hereinafter). However, in this case, the exposure does not need to appear on the exterior, and it is sufficient that the exposure can be made with a member outside the exciter case. Code 20
A reversible rotation mechanism is shown with a symbol. In this embodiment, a hydraulic vane motor is used. This reversible rotation mechanism is a device similar to a hydraulic motor, but does not need to be able to rotate continuously like a hydraulic motor, and it is sufficient to be able to reciprocate about 180 degrees. The rotation speed may be lower than that of a normal hydraulic motor, but it is desirable that the rotation torque be large. The reversible rotation mechanism is a known device that has already been disclosed in the patent registration publication, and therefore the description of the structure and functions will be omitted. Reference numeral 21 denotes a swivel joint for supplying pressure oil for operation to the reversible rotating mechanism 20.

The end of the inner shaft 16 on the side opposite to the rotary driving device 19 projects out of the exciter case 18 together with the outer tube 17. Axis 2
0b, the outer tube 17 is a body 20a of the reversible rotation mechanism 20.
Are fixedly connected. However, when the present invention is implemented, the inner shaft 16 and the rotating shaft 20b are not necessarily fixed, but may be a connection method that allows relative displacement in the axial direction such as a spline connection. In FIG. 1, the fixed eccentric weight 9 and the rotating eccentric weight 10 are illustrated separated from each other in the axial direction of the composite rotating shaft Com, but are schematically illustrated for easy reading. Are configured such that their respective centers of gravity substantially overlap in the axial direction, so that generation of harmful moments is suppressed.

When the rotation driving device 19 is rotated, the inner shaft 16 connected to the rotation output shaft and the inner shaft 16
The fixed eccentric weight 9 fixed to is rotated at the same rotation speed and the same phase as the rotation output shaft of the rotary driving device 19. The outer tube 17 and the movable eccentric weight 10 fixed to the outer tube 17 are driven to rotate via the reversible rotation mechanism 20 without being directly driven to rotate by the rotation driving device 20. When the total eccentric moment of the fixed eccentric weight 9 and the movable eccentric weight 10 is not zero, vibration is generated by the rotation and work is performed using the vibration as an output. When the weight 10 is vibrating, it is necessary to supply rotational energy from the rotary drive device 19 to each of the two.

Now, the rotary driving device is rotated in a state where the pressure oil inflow and outflow paths of the reversible rotating mechanism 20 (hydraulic vane motor) are blocked to prevent the rotating shaft 20b from rotating with respect to the body 20a of the reversible rotating mechanism. When the actuator 19 is actuated, the fixed eccentric weight 9 and the movable eccentric weight 10 rotate at the same rotational speed, and the phase relationship between them is constant. That is, the total eccentric moment of both is constant and invariable. Then, by operating the reversible rotation mechanism 20, the rotation shaft 20b is moved to the body 20a.
Relative to the fixed eccentric weight 9 fixed to the rotation shaft 20b of the reversible rotation mechanism, the movable eccentric weight 10 fixed to the body 20a rotates relatively. And the phase difference between the two changes.

One of the features of the effect of the present invention lies in that the above-mentioned phase difference adjusting action can be performed while rotating both eccentric weights. The reversible rotation mechanism can be rotated in both forward and reverse directions.
The two eccentric weights mutually change the phase difference by exactly the angle θ. If the phase of the movable eccentric weight 10 is advanced with respect to the fixed eccentric weight 9 when the reversible rotation mechanism is rotated, the rotation of the reversible rotation mechanism at this time is called forward rotation. To When the reversible rotation mechanism 20 is reversed, the phase of the movable eccentric weight 10 with respect to the fixed eccentric weight is delayed. As can be easily understood from the above-described operation, the forward and reverse rotations of the reversible rotation mechanism and the leading and lagging phases of the eccentric weights are relative, and the terms can be changed. Even if the quick talk is defined as above, the rotary drive 19
If the rotation direction of the (hydraulic motor) is changed, the phase of the movable eccentric weight 10 will be delayed when the reversible rotation mechanism is rotated forward.

The relative names are the same for the fixed eccentric weight and the movable eccentric weight. As described above with reference to FIG. 9, the oscillating force of two eccentric weights having substantially the same eccentric moment changes by changing the mutual phase relationship. Regarding the increase and decrease, the fixed side and the variable side of the eccentric weight are simply names for convenience of description, and these can be interchanged. However, in the present invention, an eccentric weight and a fixed eccentric weight that are directly connected to a rotary driving device (motor) or that rotate completely in synchronization with each other are called according to the custom of the industry, and the phase difference with respect to the fixed eccentric weight changes. The eccentric weight to be moved is called a movable eccentric weight.

Next, the sieve plant shown in FIG.
A comparison is made between the case where the conventional vibration exciter whose vibration excitation force cannot be adjusted is used as the vibration device 6 and the case where the vibration generator of the embodiment whose vibration excitation force can be adjusted shown in FIG. 1 is used. , Its operating state,
In particular, the state of occurrence of vibration pollution will be described. In the case of the conventional eccentric weight type vibrator, the eccentric weight shaft starts rotating at a low speed and gradually increases the rotation speed. Along with this, low-frequency vibration is generated at first, and the frequency gradually increases. For this reason, a drive device (motor) for rotating the vibration device 6 is provided with respect to (a). (B) supply energy for giving rotation to the eccentric weight, accelerating the rotation and accumulating rotational energy; The total amount of the supplied energy for generating the vibration in the eccentric weight and the supplied energy of (a) and (b) above must be generated.

Since the conventional vibrating device started to operate in the above-described state must supply the above-mentioned energy (a) and (b), a large-capacity rotary drive device or a large-capacity rotary driving device is required. Power supply equipment is required, and the equipment cost becomes high. If the capacity of the rotary drive device is not sufficient, it takes a long time from the start operation to the normal operation state.
In addition, for example, when an electric motor is provided as the above-mentioned rotary driving device, if the capacity of the power supply equipment is not sufficient, a serious problem that the power supply voltage is reduced at the time of startup may be caused.

The rotation speed of the vibrating device which has started operation gradually increases. With this, the vibration frequency also gradually increases. When the above-mentioned vibration frequency substantially coincides with the natural frequency of the building 12, the building 12 resonates and vibrates. In this state, most of the vibration energy generated by the vibration device 6 is injected into the building 12, and a large stress which is not expected by the building designer is generated in a portion corresponding to the antinode of the vibration of the building. Repeated start and stop every day, building 1
Since a large stress is repeatedly applied to the local portion of 2, the fatigue progresses, and there is no fear that a fatigue crack may occur.

It is not limited to the building 12 that causes the above-described resonance problem. There is a possibility that the carry-in conveyor 13 may burst at resonance, a portion of the sieve device 11 may be damaged at resonance, and the chute 33 may be damaged at resonance. It is well known as an empirical fact that not only the device illustrated in FIG. 8 but also the damage of resonance occurs in unexpected places. For example, there are many cases in which a ceiling light is broken due to resonance damage, a fuse wire is broken due to resonance, and a cupboard resonates and ceramics is damaged. For example, in the case of an earthquake, the vibration frequency is limited to the resonance frequency of the ground, and the construction designer intentionally implements means for avoiding resonance,
There are few examples of damage from building resonance. However, when the conventional vibration exciter is started, the frequency of the generated vibration continuously changes from zero to the rated rotation speed, so that the member having the natural frequency always resonates.

A driving operation and an operation when the exciter provided with the phase control device according to the embodiment shown in FIG. 1 is applied as the vibration device 6 shown in FIG. 8 will be described below. Prior to activation, the reversible rotating mechanism 20 is operated to bring the fixed eccentric weight 9 and the movable eccentric weight 10 into the standard state, ie, the centers of gravity of both eccentric weights are symmetrically positioned with respect to the rotation center axis, and the total eccentric moment Is set to zero, and the operation of the rotary drive device 19 is started. Rotary drive device 19 of this example
Is a hydraulic motor, which receives pressure oil from an engine-driven hydraulic pump. However, when implementing the present invention, the rotary drive device may be an electric motor or various internal combustion engines.

The fixed eccentric weight 9 and the movable eccentric weight 10
The total center of gravity of these two eccentric weights is positioned on the rotation center axis of the composite rotation axis Com, and the rotation speed is increased while functioning as a flywheel (flywheel). Almost all of the rotational energy generated by the rotary drive device 19 is effectively stored as the rotational inertia energy of the eccentric weight, except for the portion that is converted into heat by friction. In this case, since the portion lost as vibration energy is almost zero, the rotation speed increases relatively rapidly. Even when approaching the rotation speed corresponding to the natural frequency of the building 12 during the rotation speed increase, the excitation force is zero because the total eccentric moment of the fixed eccentric weight 9 and the movable eccentric weight 10 is zero. Therefore, the problem that the building resonates does not occur, and the building passes through the rotation speed region corresponding to the natural frequency of the building within a short time and quickly reaches the rated rotation speed. Similarly, natural vibrations of various incidental facilities and equipment other than the building pass without causing any particular problem.

As described above, during the period in which the rotation speed is increased while the fixed eccentric weight 9 and the movable eccentric weight 10 are maintained in the reference state (the state where the total eccentric moment is zero), the body 20a of the reversible rotating mechanism is not moved. In order to prevent the rotation of the rotation shaft 20b, the flow path for supplying pressure oil to the reversible rotation mechanism and discharging hydraulic oil from the reversible rotation mechanism may be closed by valve means. desirable. However, the fixed eccentric weight 9 and the movable eccentric weight 10 do not exert a force to escape from the reference state (the total eccentric moment is zero), and on the contrary, the action of trying to maintain the reference state works. Maintaining the reference state in the starting operation is easily performed.

When the rotation speed of the fixed eccentric weight 9 and the movable eccentric weight 10 reaches the rated rotation speed, the reversible rotating mechanism 2 is rotated while rotating the rotary driving device 19 at the rated rotation speed.
0 is actuated, and the rotating shaft 20b is rotated by 180 degrees with respect to the body 20a to bring it into the rated vibration state. The rotation angle of 180 degrees in this case is a numerical value in the present embodiment, and it is not always necessary to rotate the rotation 180 degrees at a time and switch to the rated state. Alternatively, a vibrating force of, for example, 70% may be intentionally generated. The rotation angle does not prevent the rotation angle from exceeding 180 degrees.
When the degree is + φ degrees, the vibrating force is the same as the case of 180 degrees −φ degrees, and the rotation operation of 180 degrees or more is useless unless there is a special intention. In the case of configuring the reversible rotation mechanism 20, if the maximum possible rotation angle is set to 180 degrees, the design and manufacture are easier than in the case where a larger rotation angle is set. Can be manufactured with small size, light weight and low cost.

When the movable eccentric weight 10 is rotating with a phase difference of 180 degrees with respect to the fixed eccentric weight, a force acts to reduce the phase difference to zero (increases to 360 degrees). In some cases, it acts on the form that it is trying to cause, but in principle it is the same, and in practice it is a similar phenomenon.)
For this reason, it is desirable to shut off the inflow and outflow of the hydraulic oil to and from the reversible rotating mechanism and to keep the oil in a so-called oil lock state. It is convenient to provide such a structure that it is pressed against the stopper by hydraulic pressure. Furthermore, although not shown, it may be recommended to provide a clutch means so that the phase difference between the fixed eccentric weight 9 and the movable eccentric weight 10 can be arbitrarily fixed or released. .

When the vibrating device 6 (FIG. 8) is stopped after the predetermined sieving operation is completed, the rotation driving device 19 shown in FIG.
Prior to stopping the operation, the reversible rotation mechanism 20 is operated to make the phase difference of the movable eccentric weight 10 with respect to the fixed eccentric weight 9 zero to eliminate the total eccentric moment.
The rotation output of the reversible rotation mechanism 20 required for this operation is very small. Due to the disappearance of the eccentric moment, the vibrating force becomes zero even when the eccentric weight is rotating. The rotation drive device 19 is stopped in such a state. At the time of stopping, a braking force may be applied or a rotational force in the reverse direction may be generated. However, the vehicle may be left for a while to be naturally decelerated by a frictional force to bring it to a stop. During the stop, the rotation speed of the eccentric weight gradually decreases and passes through a rotation speed region corresponding to the natural frequency of the building 12 and other devices, but since the vibrating force is zero, a problem occurs due to resonance. There is no fear. After the rotation has stopped, it is desirable to leave the state of zero phase difference in preparation for the next start.

(See FIG. 1) In the present invention, the rotary drive device 19 is located outside the exciter case 18. With such a structure, it is easy to monitor the status of the rotary drive device 19 that is a device that generates heat, and it is also easy to provide a cooling unit. In addition, since the rotary drive device 19 can be easily attached and detached and replaced, it is easy to install a high-speed, low-torque rotary drive device or replace it with a low-speed, large-torque rotary drive device according to the working conditions. It is convenient. Furthermore, a hydraulic motor or an electric motor can be used as the rotary drive device, and furthermore,
Similarly, even with an electric motor, exchange between a DC motor and an AC motor is easy.

FIG. 2 is a schematic longitudinal sectional view showing an eccentric weight type vibrator provided with a control device according to an embodiment different from that of FIG. 1 described above. It is a figure corresponding to such composition. The difference from the above-described embodiment (FIG. 1) is that the rotation shaft 20b of the reversible rotation mechanism 20 penetrates the body 20a. However, in the present embodiment, the phrase “penetrating” does not need to literally penetrate the appearance, and it suffices that the device can be connected to other devices. Although the rotary driving device 19 in the above-described embodiment of FIG. 1 is connected to the left end of the inner shaft 16 in the drawing, the rotary driving device 19 in the embodiment of FIG.
Is the rotation output shaft of which is the rotation shaft 20 b of the reversible rotation mechanism 20.
Are concentrically connected via

In the example shown in FIG.
A rotation output shaft, and a rotation shaft 20b of the reversible rotation mechanism 20;
The inner shaft 16 of the composite rotary shaft Com and the fixed eccentric weight 9 rotate in the same phase, the body 20a of the reversible rotation mechanism 20, and the outer tube 17 of the composite rotary shaft Com , The movable eccentric weight 10 and the movable eccentric weight 10 rotate in the same phase.
Similarly, when 0b rotates by an angle θ with respect to the body 20a, the movable eccentric weight 10 is advanced or retarded by the angle θ with respect to the fixed eccentric weight 9 in the same manner. Thereby, even if it is configured as shown in FIG.
The same effect as in the embodiment can be obtained.

FIG. 3 is a schematic longitudinal sectional view showing an example of an eccentric weight type vibrator provided with a phase control device according to an embodiment different from those of FIGS. 1 and 2 described above. It is a figure corresponding to Claim 3 and Claim 8. The difference between the configuration of FIG. 3 and the configuration of FIG. 2 is as follows. In FIG. 2, the rotation output shaft of the rotary drive device 19 is connected to the rotation shaft 20b of the reversible rotation mechanism 20, whereas in FIG. 3, it is connected to the body 20a.

Thus, the outer tube 1 of the composite rotating shaft Com
7, and the eccentric weight attached thereto is directly connected to the rotation output shaft of the rotary drive device 19 and rotates synchronously. As a result, the eccentric weight attached to the outer tube 17 is called a fixed eccentric weight, and the eccentric weight attached to the inner shaft 16 is called a movable eccentric weight. However, as described above, the fixed eccentric weight and the movable eccentric weight have the same rating with respect to the action of generating vibration and increasing / decreasing the vibrating force, and their names are for convenience. Therefore, even with the configuration as shown in FIG. 3, the same operation and effect as those in the examples of FIGS. 1 and 2 can be obtained.

FIG. 4 is a schematic longitudinal sectional view showing an exciter provided with a phase control device according to an embodiment different from the above-described embodiments of FIGS. 1, 2 and 3. 14 is a diagram corresponding to claim 4 and claim 9. FIG. When the rotary driving device is installed as indicated by a virtual line 19 in FIG. 4, the upper half of the configuration of FIG. 4 has a configuration similar to that of FIG. 1 described above. Although similar and not the same, the synchronous transmission gear 22 is provided on each of the fixed eccentric weight 9 and the movable eccentric weight 10 in some cases.

Next, the lower half of FIG. 4 will be described. An eccentric weight shaft 23 is provided in parallel with the inner shaft 16 described above with reference to FIG. 10 'is rotatably supported. The synchronous transmission gear 22 'fixed to the fixed eccentric weight 9' is meshed with the synchronous transmission gear 22 fixed to the fixed eccentric weight 9, and the two fixed eccentric weights 9, 9 'Rotate synchronously in opposite directions. Similarly, the movable eccentric weight 10 and the movable eccentric weight 10 'rotate synchronously in opposite directions via the synchronous transmission gears 22 and 22'.

The rotary driving device is positioned at the position 19 indicated by a virtual line.
However, in the present embodiment, it is installed at a position 19 shown by a solid line. In any case, the inner shaft 16 and the fixed eccentric weights 9, 9 'are directly connected to the rotary output shaft of the rotary driving device, and are rotated at the same rotational speed and in the same phase. Further, the outer tube 17, the movable eccentric weights 10, 10 ', and the rotation axis of the reversible rotation mechanism are rotated at the same rotation speed and in the same phase. In this manner, the fixed eccentric weight group 9, 9 'and the movable eccentric weight group 1
The phase difference between 0 and 10 'is increased or decreased by the same angle as the rotation angle of the reversible rotation mechanism.

According to the embodiment of FIG. 4 described above,
Since the reversible rotating mechanism 20 and the rotary driving device 19 'are also arranged on the same side (right side in the figure) of the exciter case 18, maintenance of the device that generates rotational power from one side of the exciter case is maintained. Can be performed. In addition, since a plurality of sets of fixed eccentric weights and a plurality of sets of movable eccentric weights are provided, strong vibration generation performance can be obtained with a compact configuration, and these are driven by a single rotary drive. , And 1
The reversible rotation mechanism can perform the increase / decrease adjustment of the vibrating force.

FIG. 5 shows a further different embodiment from the above.
Machine with two separate rotating systems (not shown)
FIG. 5 is a cross-sectional view of a unit device configured to adjust a phase difference between the rotation systems. Considering this in comparison with the above-described embodiment shown in FIG. 4, the fixed eccentric weight 9 and the movable eccentric weight 1 are shown in the upper half of FIG.
This corresponds to a configuration from which 0 has been removed. Therefore, the phase difference between the fixed eccentric weight and the movable eccentric weight is controlled by attaching the unit device shown in FIG. 5 to the eccentric weight type vibrator having no phase difference adjusting means. can do.

Although not shown, it is assumed that an exciter is obtained by removing the reversible rotating mechanism 20 from the components indicated by solid lines in FIG. 4, and the phase control shown in FIG. With the unit mounted, the same as the synchronous transmission gear 22 of FIG.
2 and the fixed phase gear 27 and the movable phase gear 2 of FIG.
When each of the gears 8 is engaged with each other, the virtual vibrating device can increase or decrease the phase difference between the movable eccentric weight and the fixed eccentric weight. Further, the unit device for phase difference control shown in FIG. 5 is not limited to the eccentric weight type vibrator, and the unit case 24 is generally used for a mechanical device having a plurality of rotating systems. The fixed phase gear 27 and the movable phase gear are engaged with transmission gears (not shown) provided on the two rotation systems, respectively, so that two of the plurality of rotation systems can be used. Can be adjusted.

Although not shown in the drawings, as a modification of the phase control unit shown in FIG. 5, a rotary driving device for driving either the inner shaft 25 or the outer tube 26 can be mounted. When the unit device configured as described above is applied, the unit device according to the present invention is mounted on a machine having two rotation systems without rotation driving means, and the two rotation systems are rotationally driven. , The phase difference can be controlled. Such a unit device is applicable to a wide range of machines, and since it is a unit device, it has marketability and high commercial value.

The unit case 24 indicated by the reference numeral 24 in FIG. 5 is configured so as to be mountable to a case of a machine having two rotation systems, and is composed of an inner shaft 25 and an outer tube 26. The composite rotating shaft is rotatably supported by roller bearings 30 and 31. Further, the outer tube 26 can rotate the inner shaft 25 by the needle bearing 29,
And they are concentric. The movable phase gear 28 is
The fixed phase gear 27 is fitted on the inner shaft 25, respectively. 32 is an oil seal. Reversible rotation mechanism 20
Of the reversible rotation mechanism 2 is attached to the outer tube 26.
The zero rotation shaft 20b is connected and fixed to the inner shaft 25, respectively.

[0069]

As described above, according to the embodiment of the present invention, the structure and function thereof are clarified. According to the apparatus of the present invention, one end of the inner shaft is exposed outside the exciter case. Then, a rotary drive device (for example, a hydraulic motor)
Are connected, and the fixed eccentric weight is attached to the inner shaft, so that the fixed eccentric weight is directly connected to the rotary driving device, The output shaft, the inner shaft, and the fixed eccentric weight are forcibly synchronized and rotated. On the other hand, the outer tube is fitted concentrically with the inner shaft, but the relative rotation is not restricted,
Since the movable eccentric weight is attached to the outer tube, the fixed eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same rotation center. I have. Further, since the inner shaft is connected to the rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor) and the outer tube is connected to the body of the reversing rotating mechanism, the rotating shaft of the reversible rotating mechanism is When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. Accordingly, the movable eccentric weight attached to the outer tube is advanced or retarded by the angle θ with respect to the fixed eccentric weight attached to the inner shaft. The above-described phase-advancing and lagging operations are performed while the body of the reversible rotation mechanism rotates together with the outer tube and the rotation axis rotates together with the inner shaft. Without stopping the rotation of the equipment
That is, the operation of the entire apparatus can be performed while continuing. If the phase of the movable eccentric weight can be advanced or delayed by 180 degrees with respect to the fixed eccentric weight, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to the second aspect of the present invention, one end of the inner shaft is connected to the turning shaft of the reversible turning mechanism, and a rotary drive device (for example, a hydraulic motor) is connected to the other end of the turning shaft. The fixed eccentric weight is connected to the inner shaft, and the fixed eccentric weight is directly connected to the rotary driving device. The shaft, the rotating shaft of the reversible rotating mechanism, the inner shaft, and the fixed eccentric weight are forcibly synchronized to rotate. On the other hand, since the outer tube is fitted concentrically to the inner shaft but is not restricted in relative rotation, and the movable eccentric weight is attached to this outer tube, the fixed eccentric weight is used. The movable eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same center of rotation. Further, since the inner shaft is connected to the rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor) and the outer tube is connected to the body of the reversing rotating mechanism, the rotating shaft of the reversible rotating mechanism is When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. Accordingly, the movable eccentric weight attached to the outer tube is advanced or retarded by the angle θ with respect to the fixed eccentric weight attached to the inner shaft. The above-described phase-advancing and lagging operations are performed while the body of the reversible rotation mechanism rotates together with the outer tube and the rotation axis rotates together with the inner shaft. The operation can be performed without stopping the rotation of the device, that is, while continuing the operation of the entire device. If the phase of the movable eccentric weight can be advanced or delayed by 180 degrees with respect to the fixed eccentric weight, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to the third aspect of the present invention, one end of the outer tube is exposed outside the exciter case, and the end of the outer tube is rotated with respect to this end via the body of the reversible rotating mechanism (for example, the hydraulic motor). ) Is connected and a fixed eccentric weight is attached to the outer tube, so that the fixed eccentric weight is directly connected to the rotary driving device, The output shaft, the inner shaft and the fixed eccentric weight are forcibly synchronized and rotated. On the other hand, the inner shaft is fitted concentrically with the outer tube but is not restricted in relative rotation, and the movable eccentric weight is attached to the inner shaft. The movable eccentric weight and the movable eccentric weight are supported so as to be able to change the phase and rotate around the same center of rotation. Further, since the inner shaft is connected to the rotating shaft of a reversible rotating mechanism (for example, a hydraulic vane motor) and the outer tube is connected to the body of the reversing rotating mechanism, the rotating shaft of the reversible rotating mechanism is When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. Along with this,
The movable eccentric weight attached to the inner shaft is advanced by an angle θ with respect to the fixed eccentric weight attached to the outer tube,
Or be delayed. The above-described phase-advancing and lagging operations are performed while the body of the reversible rotation mechanism rotates together with the outer tube and the rotation axis rotates together with the inner shaft. The operation can be performed without stopping the rotation of the device, that is, while continuing the operation of the entire device. If the phase of the movable eccentric weight can be advanced or delayed by 180 degrees with respect to the fixed eccentric weight, the total eccentric moment of these eccentric weights can be changed from the maximum value to zero. Accordingly, the excitation force can be increased or decreased from the maximum value to zero.

According to the device of the fourth aspect, the fixed eccentric weight that is rotationally driven by the rotary driving device and the movable eccentric weight that is rotationally driven by the rotary driving device via the reversible rotating mechanism are basically provided. Is rotated synchronously, and is advanced or retarded in accordance with the rotation angle of the reversible rotation mechanism, so that the vibrating force can be increased or decreased while rotating, and
A plurality of fixed eccentric weights are rotated synchronously with each other, a plurality of movable eccentric weights are rotated synchronously with each other, and a group of fixed eccentric weights synchronously rotated as described above, The phase difference from the eccentric weight group is advanced or retarded according to the rotation angle of the reversible rotation mechanism. This makes it possible to obtain a strong vibrating force with a compact vibrator, and to adjust the increase / decrease of the vibrating force.

According to the fifth aspect of the present invention, since a member for controlling the phase difference is incorporated in a unit case which can be mounted on a case of a machine having a plurality of rotating systems, a plurality of separately formed members are provided. By mounting the unit case on a machine having a rotating system, the phase difference between a plurality of rotating systems of the machine can be easily controlled, and the range of application is wide. In addition, since the main constituent members are housed or mounted in the unit case, it is possible to configure a phase control device having excellent marketability and high commercial value as a unit device. In addition, since the gears are mounted on each of the inner shaft and the outer tube forming the compound rotary shaft, when the unit case is mounted on the case of the machine, the inner shaft and the outer tube are almost automatically formed. Are communicatively connected to a plurality of rotating systems of the machine. The unit device having the structure of claim 5 has a role of phase difference control, but it is also possible to install a device for rotational driving for rotating one of the inner shaft and the outer tube, The rotational drive may be provided on the controlled machine side, and the unit device of the present invention may be dedicated to phase difference control.
As described above, the invention according to the present invention has a large degree of design freedom when implementing the invention.

According to the sixth aspect of the present invention, the fixed eccentric weight and the movable eccentric weight are vibrated concentrically and relatively rotatably by the composite shaft including the inner shaft and the outer tube. The fixed eccentric weight is constrained to rotate at the same rotation speed and the same phase as the inner shaft, and the movable eccentric weight is fixed at the same rotation speed as the outer tube. It is constrained to rotate in the same phase. The inner shaft is rotationally driven by a rotary driving device with respect to an exciter case, which is a stationary member, and accordingly, the fixed eccentric weight is rotated while being directly connected to the rotary driving device. The outer tube and the movable eccentric weight are indirectly driven to rotate by the rotation driving device via the inner shaft and the reversible rotation mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism. When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. As a result, when the phase difference between the movable eccentric weight attached to the outer tube and the fixed eccentric weight attached to the inner shaft becomes a standard state of 180 degrees, the total eccentric moment becomes zero and the vibrating force becomes zero. Disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the middle between the above-described state where the vibrating force is maximum and the state where the vibrating force is minimum, with the rotation of the rotating shaft of the reversible rotating mechanism,
It can be changed steplessly, and the operation of increasing / decreasing the vibrating force can be performed without interrupting the operation of the vibrator, which is of great practical value.

According to the method of the present invention, the fixed eccentric weight and the movable eccentric weight are vibrated by the composite shaft including the inner shaft and the outer tube so as to be concentric with each other and relatively rotatable. The fixed eccentric weight is constrained to rotate at the same rotational speed and the same phase as the inner shaft, and the movable eccentric weight is rotated at the same rotational speed as the outer tube. It is constrained to rotate in the same phase. The above-mentioned inner shaft is driven by a rotary drive device via a rotation shaft of a reversible rotation mechanism,
The stationary eccentric weight is rotated in a state of being directly connected to the rotary driving device with the rotation of the exciter case which is a stationary member. The outer tube and the movable eccentric weight are rotationally driven indirectly by the rotary driving device via the body of the reversible rotating mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism. When the body is turned forward and backward by the angle θ,
The outer tube is advanced or retarded by an angle θ with respect to the inner axis. As a result, when the phase difference between the movable eccentric weight attached to the outer tube and the fixed eccentric weight attached to the inner shaft becomes a standard state of 180 degrees, the total eccentric moment becomes zero and the vibrating force becomes zero. Disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the intermediate state between the state of the maximum vibrating force and the state of the minimum vibrating force, it can be changed steplessly with the rotation of the rotating shaft of the reversible rotating mechanism. Since the increase / decrease adjustment operation can be performed without interrupting the operation of the exciter, the practical value is large.

According to the eighth aspect of the present invention, the fixed eccentric weight and the movable eccentric weight are vibrated by the composite shaft including the inner shaft and the outer tube so as to be concentric with each other and relatively rotatable. The fixed eccentric weight is rotatably supported on the machine case, and the fixed eccentric weight is constrained to rotate at the same rotation speed and the same phase as the outer tube. It is constrained to rotate in the same phase. The outer tube is driven by a rotary drive device through a body of a reversible rotating mechanism,
The stationary eccentric weight is rotated in a state of being directly connected to the rotary driving device with the rotation of the exciter case which is a stationary member. The inner shaft and the movable eccentric weight are rotationally driven indirectly by the rotary driving device via a reversible rotating mechanism. In such a state, the inner shaft is connected to the rotating shaft of the reversible rotating mechanism, and the outer tube is connected to the body of the reversible rotating mechanism. When the body is rotated forward and backward by an angle θ with respect to the body, the outer tube is advanced or retarded by an angle θ with respect to the inner axis. As a result, when the phase difference between the movable eccentric weight attached to the inner shaft and the fixed eccentric weight attached to the outer pipe becomes a standard state of 180 degrees, the total eccentric moment becomes zero and the vibrating force Disappears. That is, the fixed eccentric weight and the movable eccentric weight are located symmetrically with respect to the rotation center axis, and they act as a flywheel (flywheel) by summing them. When the phase difference between the fixed eccentric weight and the movable eccentric weight becomes zero, the total eccentric moment is maximized to generate a rated vibrating force. In the intermediate state between the state of the maximum vibrating force and the state of the minimum vibrating force, it can be changed steplessly with the rotation of the rotating shaft of the reversible rotating mechanism. Since the increase / decrease adjustment operation can be performed without interrupting the operation of the exciter, the practical value is large.

According to the ninth aspect of the present invention, the fixed eccentric weight which is rotationally driven by the rotary driving device and the movable eccentric weight which is rotationally driven by the rotary driving device via the reversible rotating mechanism are basically provided. Is rotated synchronously, and is advanced or retarded in accordance with the rotation angle of the reversible rotation mechanism, so that the vibrating force can be increased or decreased while rotating, and
A plurality of fixed eccentric weights are rotated synchronously with each other, a plurality of movable eccentric weights are rotated synchronously with each other, and a group of fixed eccentric weights synchronously rotated as described above, The phase difference from the eccentric weight group is advanced or retarded according to the rotation angle of the reversible rotation mechanism. This makes it possible to obtain a strong vibrating force with a compact vibrator, and to adjust the increase / decrease of the vibrating force.

According to the tenth aspect of the present invention, since the phase difference controlling member is incorporated in a unit case which can be mounted on a case of a machine having a plurality of rotating systems, a plurality of separately formed components are provided. By mounting the unit case on a machine having a rotating system, the phase difference between a plurality of rotating systems of the machine can be easily controlled, and the range of application is wide. In addition, since the main constituent members are housed or mounted in the unit case, it is possible to configure a phase control device having excellent marketability and high commercial value as a unit device. In addition, since the gears are mounted on each of the inner shaft and the outer tube forming the compound rotary shaft, when the unit case is mounted on the case of the machine, the inner shaft and the outer tube are almost automatically formed. Are communicatively connected to a plurality of rotating systems of the machine.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of the present invention, and is a view corresponding to claims 1 and 6;

FIG. 2 is a schematic longitudinal sectional view showing an eccentric weight type vibrator provided with a control device according to an embodiment different from that of FIG. 1 described above, and is a configuration according to claims 2 and 7; It is a corresponding figure.

FIG. 3 is a schematic longitudinal sectional view showing an example of an eccentric weight type vibration exciter provided with a phase control device according to an embodiment different from those of FIGS. 1 and 2 described above. It is a figure corresponding to Claim 8.

FIG. 4 is a schematic longitudinal sectional view showing an exciter provided with a phase control device according to an embodiment different from the above-described embodiments of FIGS. 1, 2, and 3, and FIG. 10 is a diagram corresponding to item 9.

FIG. 5 is a cross-sectional view of a unit device showing an embodiment different from the above and configured to be able to adjust the phase difference between the rotating systems of a machine (not shown) having two separate rotating systems. It is.

FIG. 6 is a schematic diagram for explaining vibration pollution in a pile driving operation. This figure shows a crane boom 5 and a vibration device 6
While the upper end of the pile 7 is gripped by the chuck 6a of the vibrating device 6, and the pile 7 is vibrated and driven into the ground.

FIG. 7 is a chart showing a change in frequency at the time of starting operation and at the time of stopping operation of the vibration device, and the horizontal axis is time.

FIG. 8 is a partial cutaway view of a sieve plant provided with a vibration device.

FIG. 9 is a view for explaining a known technique for changing the vibrating force by a combination of two eccentric weights, wherein (A) shows that the two eccentric weights exert the maximum vibrating force; (B) is a schematic diagram showing a state in which the vibrating force is moderate, (C) is a schematic diagram showing a state in which the vibrating force is slightly small, and (D) is a schematic diagram showing a state in which the vibrating force is zero. It is a schematic diagram showing a state.

FIG. 10 is a schematic diagram of a mechanism in which a fixed eccentric weight is fixed to a common rotation shaft and a movable eccentric weight can adjust a relative rotation angle position with respect to the common rotation shaft.

[Explanation of symbols]

 2 Rotating shaft 4 Synchronous transmission gear 5 Crane boom 6 Vibration device 6a Chuck 7 Pile 8 Private house 9 Fixed eccentric weight 10 Movable eccentric weight 11 Sieve device 12 Building 13 Carry-in conveyor DESCRIPTION OF SYMBOLS 14 ... Unloading conveyor 15 ... Unloading vehicle 16 ... Inner shaft 17 ... Outer tube 18 ... Exciter case 19 ... Rotary driving device 20 ... Reversible rotating mechanism 20a ... Body 20b ... Rotating shaft 21 ... Svalle joint 22 ... Synchronous transmission Gear 23 eccentric weight shaft 24 unit case 25 inner shaft 26 outer tube 27 fixed phase gear (gear integrated with fixed eccentric weight) 28 movable phase gear (gear integrated with movable eccentric weight) 29 ... Needle bearings 30, 31 ... Roller bearings 32 ... Oil seals 33 ... Chutes Com ... Composite rotating shaft

Claims (10)

[Claims] An inner shaft and an outer tube are concentrically and rotatably fitted to each other and rotatably supported by a vibrator case. A fixed eccentric weight and a movable eccentric weight are attached to, and one end of the inner shaft is exposed outside the exciter case, and a rotation driving device is connected to the exposed end, The other end of the inner shaft is exposed outside the case together with the outer tube, and a rotating shaft of a hydraulic reversible rotating mechanism is connected to the other end of the inner shaft, and The body of the reversible rotation mechanism is connected to the end, and when the rotary driving device is operated, the fixed eccentric weight and the movable eccentric weight are synchronously rotated, and the reversible rotation mechanism is operated. Then, the phase difference between the fixed eccentric weight and the movable eccentric weight is changed. To characterized in that it in the phase control device of the machine having a plurality of rotary systems. 2. An inner shaft and an outer tube are fitted concentrically and relatively rotatably to be rotatably supported by an exciter case, and each of the inner shaft and the outer tube is A fixed eccentric weight and a movable eccentric weight are attached to one end of the inner shaft, and one end of the inner shaft passes through the wall of the exciter case together with the end of the outer tube. The rotating shaft of the hydraulic reversible rotating mechanism is connected to the end, the body of the reversible rotating mechanism is connected to the end of the outer tube, and the rotation of the reversible rotating mechanism is performed. The driving shaft passes through the body,
The both ends project from the body, and among the two ends of the reversible rotating mechanism rotating shaft, the rotating shaft of the rotary driving device is connected to the end opposite to the end connected to the inner shaft. A phase control device for a machine having a plurality of rotating systems. 3. An inner shaft and an outer tube are fitted concentrically and relatively rotatably to be rotatably supported by a vibrator case, and each of the inner shaft and the outer tube is A movable eccentric weight and a fixed eccentric weight are attached to one end of the inner shaft, and one end of the inner shaft passes through the wall of the exciter case together with the end of the outer tube. A rotating shaft of a hydraulic reversible rotating mechanism is connected to the end, a body of the reversible rotating mechanism is connected to an end of the outer tube, and the body of the rotary drive device is connected to the body. Characterized in that the rotating shaft of the rotary driving device is connected to the body of the reversible rotating mechanism while being fixedly supported on the exciter case. Machine phase controller. 4. A synchronous transmission gear is attached to each of the fixed eccentric weight and the movable eccentric weight, and the fixed eccentric weight causes a different fixed eccentric weight from the fixed eccentric weight via the synchronous transmission gear. To rotate synchronously,
At least one of the two fixed eccentric weights is directly or indirectly driven to rotate. By the movable eccentric weight, a movable eccentric weight different from the movable eccentric weight transmits a synchronous transmission gear. The phase control device for a machine having a plurality of rotating systems according to any one of claims 1 to 3, wherein the phase control device is configured to be rotated synchronously via a rotary shaft. 5. A unit case attachable to a case of a machine having a plurality of rotating systems, and a composite rotating shaft composed of an inner shaft and an outer tube, wherein the inner shaft and the outer tube are concentric. The inner shaft and the outer tube are rotatably supported by the unit case while being fitted so as to be relatively rotatable while maintaining the inner shaft and the outer tube. A gear is mounted, and a body of a hydraulic reversible rotating mechanism is connected to the outer tube, and a rotating shaft of the reversible rotating mechanism is connected to the inner shaft. The phase control of a machine having a plurality of rotating systems, wherein the unit case, the members housed in the unit case, and the members mounted on the unit case form a unit assembly. apparatus. 6. A composite rotating shaft is formed by fitting the inner shaft and the outer tube concentrically and relatively rotatably, and the composite rotating shaft is rotatably supported on the exciter case, While fixing the fixed eccentric weight to the inner shaft,
A movable eccentric weight is fixed to the outer tube, a rotation shaft of a rotary driving device is connected to one end of the inner shaft, and a rotation shaft of a reversible rotation mechanism is connected to the other end of the inner shaft. Connected, and by connecting the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft and activating the reversible rotating mechanism, the inner shaft and the outer tube are relatively rotated. In such a configuration, the rotation drive device is operated to rotate the inner shaft of the composite rotation shaft, and the fixed eccentric weight fixed to this is rotated, and in synchronization with the rotation of the inner shaft. In a state where the rotation axis of the reversible rotation mechanism is rotated and the rotation axis of the reversible rotation mechanism is relatively stopped with respect to the body, the composite rotation axis connected to the body The outer tube is rotated in synchronization with the inner shaft, and the movable tube fixed to the outer tube is rotated. The center weight is rotated synchronously with the fixed eccentric weight fixed to the inner shaft, and the reversible rotation mechanism is operated in a state where the fixed eccentric weight and the movable eccentric weight are synchronously rotated as described above. By rotating the rotating shaft relatively to the body, the outer tube connected to the body and the inner shaft connected to the rotating shaft are relatively rotated to be fixed to the inner shaft. A phase control method for a machine having a plurality of rotating systems, wherein a phase difference between a fixed eccentric weight and a movable eccentric weight fixed to an outer tube is adjusted. 7. A composite rotating shaft is formed by fitting the inner shaft and the outer tube concentrically and relatively rotatably, and the composite rotating shaft is rotatably supported on the exciter case, While fixing the fixed eccentric weight to the inner shaft,
A movable eccentric weight is fixed to the outer tube, and one end of a revolving shaft of the reversible rotating mechanism is connected to the inner shaft, and the other end of the reversible rotating mechanism is rotated by a rotating drive device. By connecting the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft and operating the reversible rotating mechanism, the inner shaft and the outer tube rotate relatively. The rotation drive device is operated to rotate the inner shaft of the composite rotation shaft, and the fixed eccentric weight fixed to the rotation is rotated, and the rotation is synchronized with the rotation of the inner shaft. In the state where the rotation axis of the reversible rotation mechanism is rotated and the rotation axis of the reversible rotation mechanism is relatively stopped with respect to the body, the compound connected to the body is The outer tube of the rotating shaft is rotated in synchronization with the inner shaft, and is fixed to the outer tube. The movable eccentric weight is rotated synchronously with the fixed eccentric weight fixed to the inner shaft, and the reversible rotating mechanism is rotated while the fixed eccentric weight and the movable eccentric weight are synchronously rotated as described above. Is actuated, and the rotating shaft is relatively rotated with respect to the body, whereby the outer tube connected to the body and the inner shaft connected to the rotating shaft are relatively rotated. A phase control method for a machine having a plurality of rotating systems, comprising adjusting a phase difference between a fixed eccentric weight fixed to a shaft and a movable eccentric weight fixed to an outer tube. 8. A composite rotating shaft is formed by fitting the inner shaft and the outer tube concentrically and relatively rotatably, and the composite rotating shaft is rotatably supported on the exciter case, While fixing the fixed eccentric weight to the inner shaft,
A movable eccentric weight is fixed to the outer tube, a rotation shaft of a rotary driving device is connected to one end of the inner shaft, and a rotation shaft of a reversible rotation mechanism is connected to the other end of the inner shaft. Connecting the rotating shaft of the reversible rotating mechanism to the inner shaft of the composite rotating shaft, connecting the body of the reversible rotating mechanism to the outer tube of the composite rotating shaft, and By connecting the body to the outer tube of the composite rotating shaft and activating the reversible rotating mechanism, the inner shaft and the outer tube are configured to be relatively rotated. By actuating the driving device to rotate the outer tube of the composite rotary shaft and rotating the movable eccentric weight fixed thereto, and rotating the body of the reversible rotating mechanism in synchronization with the rotation of the outer tube. And the rotating shaft of the reversible rotating mechanism is stopped relatively to the body. In this state, the composite rotary shaft outer tube connected to the body is rotated in synchronization with the inner shaft, and the movable eccentric weight fixed to the outer tube is fixed to the fixed eccentric fixed to the inner shaft. Rotating the reversible rotating mechanism synchronously with the weight and operating the reversible rotating mechanism in a state where the fixed eccentric weight and the movable eccentric weight are synchronously rotating as described above, and rotating the rotating shaft relative to the body. By rotating the outer tube connected to the body and the inner shaft connected to the rotating shaft relatively, the fixed eccentric weight fixed to the inner shaft and the outer tube A phase control method for a machine having a plurality of rotating systems, comprising adjusting a phase difference with a fixed movable eccentric weight. 9. An eccentric weight shaft separate from the composite rotation shaft,
The fixed eccentric weight is separate from the fixed eccentric weight, and the movable eccentric weight is separate from the fixed eccentric weight, while being rotatable with respect to the exciter case and disposed in parallel with the composite rotation axis. A movable eccentric weight is attached to the eccentric weight shaft, and the fixed eccentric weights formed separately are synchronously rotated with each other via a synchronous transmission gear, and the movable eccentric weight formed separately is The phase control method for a machine having a plurality of rotating systems according to any one of claims 6 to 8, wherein the weights are synchronously rotated with each other via a synchronous transmission gear. 10. A method for controlling the phase of a machine having two systems of rotating shafts, which are basically synchronously rotated and whose phase difference is intentionally changed, for a unit device mountable on a casing of the machine. A composite shaft composed of an inner shaft and an outer tube is rotatably supported on the case, and a transmission gear is attached to each of the inner shaft and the outer tube. Gears can be transmitted to the rotating shaft of the machine, and the rotating shaft of the reversible rotating mechanism is connected to the inner shaft, and the body of the reversible rotating mechanism is connected to the outer pipe, respectively. If the rotation shaft of the reversible rotation mechanism is to be synchronously rotated with a constant phase difference, the rotation shaft of the reversible rotation mechanism is stopped relatively to the body to prevent the relative rotation between the inner shaft and the outer tube. To keep the phase difference between each gear constant When the phase difference between the two rotating shafts of the machine is to be changed, the rotating shaft of the reversible rotating mechanism is rotated with respect to the body, and the inner shaft is relatively moved with respect to the outer tube. A phase control method for a machine having a plurality of rotating systems, characterized by rotating the gears to change the phase difference between the respective gears.