JPS6020458Y2 - Vibrator with multiple unbalanced weight rotary exciter - Google Patents

Description

[Detailed description of the invention] This invention has a large number of unbalanced weight rotary exciters installed on both sides of a vibrating body (hereinafter referred to as trough), and a relay shaft supported by a bearing by a timing belt. This invention relates to a vibrator that is connected via a vibrator.

Conventionally, the ripple flow and low head type large vibrating sieve machines that are commonly used, as well as hot sinter screens that are even larger than these, are all oil-lubricated systems, but such large vibrators are not necessary. Approximately 1 vibration exciter
As mentioned previously, for this reason, an unbalanced weight rotary exciter with a single large excitation force requires a large bearing, and the circumferential speed (DN value) of that bearing becomes large. The oil lubrication method described above was not only expensive, but also left much room for improvement in terms of maintenance.

In addition, conventionally, this type of vibrator has two vibration sources symmetrically on both sides.
Although there were some parts, they did not rotate in sync, and each rotated independently, so it was not possible to obtain uniform vibrations throughout the machine.

Therefore, it cannot be said that it is necessarily advantageous in terms of reducing the strength and weight of the trough itself, and the effect is limited to preventing clogging of the sieve screen because it does not vibrate uniformly.

Furthermore, even if a timing belt like the conventional type shown in Figs. 1 to 4 is used, the height of the vibrator is unnecessarily high, and the relationship with the hopper etc. installed above the vibrator is unnecessarily high. However, it had drawbacks such as not adapting to the installation conditions.

In view of the above, the present invention mainly involves installing a large number of vibrators in a large vibrator, thereby dispersing the excitation force and transmitting it to the trough, eliminating the bulkiness mentioned above, and being advantageous in reducing strength and weight. Moreover, it is an object of the present invention to provide a vibrating machine that can be used with a grease lubrication system even in large-sized machines.

The same reference numerals in each figure of the conventional type shown in FIGS. 1 to 4 and the one according to the present invention shown in FIGS. 5 to 11 indicate the same parts or members having the same function and effect. 3 is a vibration exciter with an unbalanced weight 4 attached to both ends of the rotating shaft, and this weight 4
By rotating the trough 5 in the direction of the arrow R, circular vibration is applied to every position of the trough 5.

This trough 5 is inclined by the height of a support column 7 supporting one side thereof, and is attached to a base via vibration isolation springs 6, 6'.

8 is the screen and G is the center of gravity of the trough.

Although such a configuration forms the basis of the present invention, there are conventional devices similar to this, for example, two vibrator exciters 3A and 3A as shown in FIGS. 1 and 2 belong to the conventional type. 3B are provided point-symmetrically, and are connected by a timing belt 2 to obtain circular vibration at the position of the trough 5, as well as four vibration exciters 3A above the trough 5 shown in Fig. 3.4.
3B, 3C, and 3D are arranged line-symmetrically, and the vibration exciters 3A and 3C are connected by a timing belt 2 to apply circular vibration to the trough, but these are all large-scale vibrators. When it is installed in a machine, it has disadvantages such as being unnecessarily bulky and not adapting to the installation conditions due to the hopper etc. as mentioned above.

Further, numeral 9 in the figure is a coupling that connects the vibration exciters 3A, 3B, 3G, and 3D.

The present invention effectively eliminates the above-mentioned drawbacks of the conventional type, and as an example, the four vibrators shown in Figures 5 to 7 are used in the same way as the conventional type shown in Figures 3 and 4. Attach to,
Arrow 3. at every position in trough 5. A vibration feeder that obtains linear vibration with a vibration angle α in the vibration direction indicated by s',
A so-called unit vibration conveyor, which is a plurality of vibrating conveyors 5, 5' of a fixed length joined together as shown in FIGS. 8 and 9, can be mentioned, but according to the present invention, an even number of vibrators 3A.

By simply joining 3C, 3B, and 3D via a relay shaft 10 having a timing belt and a bearing 11, and by matching their rotation angles, a long vibrating conveyor can be easily manufactured.

In addition, as in the first embodiment described above, the vibration exciters 3A and 3C
The vibration exciters 3A, 3 as shown in FIGS.
By providing the electromagnetic clutch 12 between C and the timing belt 2 as in the third embodiment, the flow velocity can be freely controlled in two or three stages.

That is, in the case of high-speed operation, the electromagnetic clutch 12 is engaged, the engine is started, and all of the vibrators are driven, and in low-speed operation, after the clutch 12 is disengaged, reverse phase braking is applied to half of the vibrators. It is something that is done over time.

As a result, the vibration angles on the inlet side and the outlet side of the trough are different as shown by arrows a and b, respectively, so that the sifting effect of the above material can be increased, and the hopper pressure on the inlet side can increase the vibration angle before and after the trough. Differences in vibration angles can be eliminated in accordance with the actual situation, and uniform vibration angles can be obtained.

In the configuration in which the electromagnetic clutch 12 is provided between the vibration exciters 3A and 3C and the timing belt 2 as shown in FIG. This invention includes feeders, conveyors, screens, shakeout machines, packers, etc.
It applies to all.

As described above, the present invention has a vibration exciter 3 having a drive source (motor) that rotates the unbalanced weight 4 and gives a circular vibration to the trough 5.
A, 3B, 3C, and 3D are all provided on both side walls of the trough 5, and they are connected diagonally by the timing belt 2, and their rotation angles are matched, so that they are not concentrated in one place as in the conventional type. Unlike conventional vibrators that apply excitation force, the excitation force is distributed in a small amount over two or more parts, and the combined force is transmitted to the vibrated object, so the trough is symmetrical. If the direction of rotation of the vibration exciter attached to the engine is reversed to the left and right, linear vibrations S and s' as shown by the arrows can be obtained when steady operation is started due to left and right synchronization torque after startup.

Therefore, there is no need to attach a vibration source to the center of gravity G of the vibrating body, the so-called trough, as seen in the conventional type.
The center of vibration away from the center of gravity G can be corrected by adjusting the excitation force of the front and rear vibrators.Moreover, as shown in the figure, each vibrator is installed line-symmetrically with respect to the center of gravity G of the trough, and the trough is It is also possible to obtain complete circular vibrations at all positions.

In addition, a timing belt with the same rotation angle is attached to the vibration exciter placed on one side, and the above-mentioned linear vibration S
, S', since the timing belt 2 is attached in the vibration directions S and S' indicated by the arrows, the timing belt 2 does not shake due to vibration, and no extra force is applied to the timing belt. Its lifespan will also be longer.

Further, each vibrator is integrated with a drive source of the same output, and has its own drive source, so that no large tension is applied to the timing belt 2, both when starting and when stopping.

That is, only the difference in the characteristics of the drive sources is affected, and the same holds true even when reverse phase control is applied, and the above-mentioned timing belt will not be affected in any way.

According to the present invention as described above, since a large number of relatively small vibration exciters are attached to the trough, a large excitation force can be obtained from the trough as a whole, and the grease lubrication method can be used even in large machines. This has the advantage of reducing manufacturing costs and making maintenance easier.The conventional vibrating sieve machine that only uses oil lubrication has a diameter of 1800 mm and a diameter of 4000 mm.
The maximum length was said to be about m, but the present invention has the remarkable advantage that it is possible to manufacture products that are twice, three times, or even larger using the grease lubrication method. A large excitation force can be obtained as a whole from a plurality of vibration sources distributed in this manner.

Therefore, compared to the conventional vibrator that uses concentrated excitation force in one place,
By transmitting the distributed excitation force, the burden on the strength of the trough itself can be reduced, which is extremely advantageous in reducing the weight of the trough, and the height of the machine can be lowered compared to the conventional vibrator. It has remarkable effects such as being able to adapt to the conditions of the installation location depending on the hopper etc.

[Brief Description of the Drawings] Figure 1 is a plan view of a feeder in which two conventional vibrators are installed above the vibrators; Figure 2 is a side view of the conventional type shown in Figure 1; The figure is a plan view of a feeder with four conventional vibrators installed above the vibrators, Figure 4 is a side view of the conventional type shown in Figure 3, and Figure 5 is an example of the embodiment of the present invention. FIG. 6 is a plan view of a feeder that obtains linear motion of the vibration angle α at all positions of the vibrating body using four vibrators; FIG. 6 is a side view of the first embodiment of the present invention shown in FIG. 5; FIG. 6 is a partial front view of the vibration exciter of the present invention shown in FIG. 6, FIG. 8 is a plan view of the unit conveyor of the present invention, and FIG. 9 is a second embodiment of the present invention shown in FIG.
, FIG. 10 is a plan view of a feeder showing an example of an electromagnetic clutch provided between the vibrator of the present invention and a timing belt, and FIG. 11 is a view of the third embodiment of the present invention shown in FIG. 10.
FIG. 2...Timing belt, 3A, 3B, 3C. 3D...exciter, 4...unbalanced weight,
5... Trough (vibrating body), G... Center of gravity of the trough.

Claims (1)

[Scope of utility model registration request] An even number of vibration exciters each having its own driving source are installed symmetrically with respect to the center of gravity of the vibrating body, a relay shaft supported by a bearing is provided between the vibration exciters, and both shaft ends of the relay shaft are connected to each other. An unbalanced weight rotary vibration exciter characterized in that a timing belt having an uneven inner periphery is passed between the shaft ends of the exciters, and the vibration exciters are connected via a relay shaft. Vibrator with attached.