TWI727774B - Vibration machine and transmission mechanism thereof - Google Patents

Abstract

The present invention provides a transmission mechanism for a vibration machine, which is used to transmit power from a motor to a pair of eccentric flywheels of the same mass. The transmission mechanism includes a transmission unit and two driven wheels of the same mass. The driven wheels rotate synchronously with the pair of eccentric flywheels, respectively. The rotation axes of the driven wheels are parallel to each other. The driven wheels are meshed with the transmission unit, respectively. The transmission unit is used to transmit the power provided by the motor to the driven wheels and make the driven wheels rotate in opposite directions. The invention also provides a vibration machine having the above transmission mechanism, which can avoid or at least mitigate the difference in horizontal inertia.

Description

Vibrating machine and its transmission mechanism

The invention relates to a vibrating machine and its transmission mechanism which eliminates horizontal inertia through mass symmetrical configuration to avoid and reduce horizontal displacement.

The existing vibrating machine drives one or more pairs of eccentric flywheels to rotate through a motor, so that the vibrating platform can swing up and down due to the inertia of the eccentric flywheel. Some vibrators also have a transmission mechanism between the motor and the eccentric flywheel, so that a single drive shaft can simultaneously drive a pair of eccentric flywheels.

For example, in the conventional vibrator shown in Figure 1, the motor output shaft 1 of the vibrating mechanism is provided with a pulley 2, and the eccentric flywheel 4 on the right is driven to rotate through the belt 3, and the belt 5, the idler 6 and another belt 7 Drive the left eccentric flywheel 8 to rotate. Although the horizontal inertia of two eccentric flywheels 4 and 8 with the same mass can be canceled when they rotate in opposite directions at the same speed, the transmission mechanism, stroke and mass used by the two are different, resulting in the two eccentric flywheels 4 and 8 When being driven, there is a time difference and simultaneous control cannot be achieved. As a result, there is inevitably a difference in inertia between the eccentric flywheels 4 and 8, and the transmission mechanism itself will also have a difference in inertia due to its mass and configuration position. The stability of the conventional vibrating machine is not good, and there is an imbalance.

The main purpose of the present invention is to provide a vibrating machine and its transmission mechanism that can avoid or at least reduce the difference in horizontal inertia.

In order to achieve the above and other objectives, the present invention provides a transmission mechanism for a vibrating machine, which is used to transmit power from a motor to a pair of eccentric flywheels with the same mass. The transmission mechanism includes a transmission unit and two driven wheels with the same mass. The two driven wheels rotate synchronously with the pair of eccentric flywheels. The rotating shafts of the two driven wheels are parallel to each other, and the two driven wheels respectively mesh with the transmission unit. The transmission unit is used to transmit the power provided by the motor to the two driven wheels and make the two driven wheels The directions of rotation are opposite to each other.

In order to achieve the above and other objectives, the present invention also provides a vibrating machine, which has a motor, at least a pair of eccentric flywheels with the same mass, and the aforementioned transmission mechanism. The number of transmission mechanisms is the same as the number of pairs of the eccentric flywheel, and the power is output through the motor. The imaginary plane of the shaft center and perpendicular to the ground is a plane of symmetry, and each pair of eccentric flywheels are mirror-symmetrical to each other on both sides of the plane of symmetry.

Compared with the prior art, the present invention drives two driven wheels with the same mass simultaneously through a single transmission unit. Compared with the prior art, it is easy to realize the technical effect of eliminating or greatly reducing the driving time difference and the inertia difference, and can realize the technical effect of simultaneously controlling the two eccentric flywheels.

Please refer to Figures 1 to 3, which is the first embodiment of the vibrating machine of the present invention. The main parts of the vibrating machine include a computer 10, a frequency converter 20, and a vibration mechanism 30. The vibration mechanism 30 includes a motor 40. , Two-sine mechanism 50 and vibration platform 90. The sine mechanism 50 is driven by the motor 40 to perform sinusoidal motion, so that the vibration platform 90 can be vibrated up and down by the inertial force of the sine mechanism 50. The number of the sine mechanism 50 can be adjusted as needed, and The sine mechanism 50 includes a transmission mechanism 60 and a pair of eccentric flywheels 71, 72 with the same mass. The transmission mechanism 60 is used to transmit power from the motor 40 to the eccentric flywheels 71, 72. The eccentric flywheels 71, 72 provide a vibration platform 90 when they rotate. The inertial force required to vibrate up and down.

Among them, the transmission mechanism 60 includes a transmission unit 61 and a pair of driven wheels 62, 63. The two driven wheels 62, 63 rotate synchronously with the pair of eccentric flywheels 71, 72, respectively. The rotating shafts of the connecting shafts 81 and 82 connecting the driven wheels 62 and 63 are parallel to each other, and in this embodiment, the rotating shafts of the driven wheels 62 and 63 are located on the same axis. The driven wheels 62 and 63 mesh with the transmission unit 61 respectively. The transmission unit 61 is used to transmit the power provided by the motor 40 to the driven wheels 62 and 63 and make the rotation directions of the two driven wheels 62 and 63 opposite to each other. The transmission unit 61 can directly or Indirectly rotatably connected to the power output shaft 41 of the motor 40; in a possible embodiment, the power output shaft 41 is coaxial with the transmission unit 61; in a possible embodiment, the power output shaft 41 and the transmission unit 61 are transmitted through other transmission elements Power to change the speed, direction of rotation, or direction of the shaft. During operation, the computer 10 can send a control signal according to the parameters set by the user, and the inverter 20 supplies power to the motor 40 according to the control signal, so that the power output shaft 41 of the motor 40 rotates at the set speed.

In order to better eliminate or at least greatly reduce the difference in inertia, each pair of eccentric flywheels 71, 72 are mirror-symmetrical to each other on both sides of a symmetry plane P, and the transmission mechanism 60 passes through the symmetry plane P and is on two sides of the symmetry plane P. The sides are mirror-symmetrical, and the two driven wheels 62, 63 are also mirror-symmetrical, so as to ensure that the horizontal moments of inertia of the elements on both sides of the symmetry plane P can cancel each other. Wherein, the symmetry plane P refers to an imaginary plane passing through the axis of the power output shaft 41 and perpendicular to the ground (just a straight line in the top view of FIG. 4).

In this embodiment, the transmission unit 61 and the driven wheels 62 and 63 are both umbrella-shaped spiral gears, and the two driven wheels 62 and 63 are respectively located on two opposite sides of the transmission unit 61. However, in other possible embodiments, the sine mechanism may be a combination of other gear elements.

For example, in the second embodiment shown in Fig. 5, the transmission unit 61 includes two sets of coaxial but oppositely arranged umbrella-shaped spiral gears 611, 612, both of which rotate synchronously with the power output shaft, and the driven wheels 62, 63 It meshes with the umbrella-shaped spiral gears 611 and 612 respectively.

For another example, in the third embodiment shown in Figure 6, the transmission unit 61 is a worm, the rotation shafts of the two driven wheels 62, 63 are perpendicular to the rotation shaft of the worm, and the two driven wheels 62, 63 are respectively located on both sides of the worm . It should be noted that although the tooth ribs of the worm are not mirror-symmetrical on the symmetry plane P, the asymmetric parts have low quality and the vertical distance between the mass point and the shaft is short, so only a small amount of inertia difference is generated, which affects the overall vibration mechanism The impact is limited.

For another example, in the fourth embodiment shown in Figure 7, the transmission unit 61 has a first threaded section 613 and a second threaded section 614 at different positions in the axial direction, respectively, the driven wheel 62 and the first threaded section 613 When engaged, the driven wheel 63 is engaged with the second threaded section 614. In this embodiment, the tooth ribs of the first and second thread segments 613, 614 are spirals, and one of the tooth ribs is right-handed and the other toothed rib is left-handed, so that the driven wheels 62, 63 It can be driven by the transmission unit 61 to rotate in the opposite direction of rotation.

In summary, the present invention replaces the belt of the conventional vibrator with a gear system. By designing the two driven wheels to have the same mass, mirror symmetry and opposite rotation directions, and drive them simultaneously through a single transmission unit, the synchronous control of the eccentric flywheel is realized. Eliminate or at least greatly reduce the problem of poor stability of conventional vibrating machines, and reduce the problem of lateral deviation caused by the difference in inertia.

1: Motor output shaft 2: pulley 3: belt 4: eccentric flywheel 5: belt 6: Idler 7: belt 8: Eccentric flywheel 10: Computer 20: Inverter 30: Vibration mechanism 40: Motor 41: PTO shaft 50: Sine mechanism 60: Transmission mechanism 61: drive unit 611, 612: Umbrella spiral gear 613: The first thread segment 614: second thread segment 62, 63: driven wheel 71, 72: eccentric flywheel 81, 82: connecting shaft 90: Vibrating platform P: plane of symmetry

Figure 1 is a schematic partial top view of the vibrating mechanism of the conventional vibrating machine.

Figure 2 is a schematic side view of the first embodiment of the vibrating machine of the present invention.

Figure 3 is a schematic diagram of the components of the first embodiment of the vibrating machine of the present invention.

Figure 4 is a partial top view of the vibrating mechanism of the first embodiment of the vibrating machine of the present invention.

Figure 5 is a schematic diagram of the transmission mechanism of the second embodiment of the vibrating machine of the present invention.

Figure 6 is a schematic diagram of the transmission mechanism of the third embodiment of the vibrating machine of the present invention.

Figure 7 is a schematic diagram of the transmission mechanism of the fourth embodiment of the vibrating machine of the present invention.

40: Motor

41: PTO shaft

61: drive unit

62, 63: driven wheel

71, 72: eccentric flywheel

81, 82: connecting shaft

P: plane of symmetry

Claims (9)

A transmission mechanism for a vibrating machine is used to transmit power from a motor to a pair of eccentric flywheels with the same mass. The transmission mechanism includes a transmission unit and two driven wheels with the same mass. The two driven wheels are used to communicate with the pair of eccentric flywheels. The eccentric flywheel rotates synchronously, the rotating shafts of the two driven wheels are parallel to each other, and the two driven wheels respectively mesh with the transmission unit. The transmission unit is used to transmit the power provided by the motor to the two driven wheels and make the two driven wheels The directions of rotation are opposite to each other. The transmission mechanism according to claim 1, wherein the transmission unit is a worm, the rotation axis of the two driven wheels is perpendicular to the rotation axis of the worm, and the two driven wheels are respectively located on two opposite sides of the worm. The transmission mechanism according to claim 1, wherein the transmission unit has a first threaded section and a second threaded section at different positions in the axial direction, and one of the two driven wheels is engaged with the first threaded section, The other of the two driven wheels meshes with the second threaded segment. The transmission mechanism according to claim 3, wherein the transmission unit includes two oppositely arranged umbrella-shaped spiral gears. The transmission mechanism according to claim 3, wherein the tooth tendons of the first and second threaded sections are spiral lines, the tooth tendon of one of the first and second threaded sections is right-handed, and the first and second threaded sections are right-handed. The tooth tendon of the other thread segment is left-handed. The transmission mechanism according to claim 1, wherein the transmission unit and the two driven wheels are both umbrella-shaped spiral gears, and the two driven wheels are respectively located on two opposite sides of the transmission unit. A vibrating machine has a motor, at least a pair of eccentric flywheels with the same mass, and at least one transmission mechanism according to any one of claims 1 to 6, and the number of transmission mechanisms is the same as the number of pairs of the eccentric flywheel. The vibrating machine according to claim 7, wherein an imaginary plane that passes through the axis of a power output shaft of the motor and is perpendicular to the ground is a plane of symmetry, and the transmission mechanism passes through the plane of symmetry and lies on the plane of symmetry. Both sides are mirror-symmetrical. The vibrating machine according to claim 7, wherein an imaginary plane passing through the axis of a power output shaft of the motor and perpendicular to the ground is a plane of symmetry, and each pair of the eccentric flywheel is on both sides of the plane of symmetry They are mirror-symmetrical to each other.

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