JPS6318469Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a shaft coupling device for preventing vibrations generated on the load side of a vibrating sieving device.

Conventionally, the vibrations generated on the sieve side of a vibrating sieve device propagate directly to the drive side or other devices,
In order to prevent the harmful effects of vibrations, vibration-proofing devices or vibration-isolating devices have been used in joints and the like to prevent vibrations from propagating to other parts. In particular, if this vibration is transmitted to the drive shaft, it can damage the bearings or rotating parts of the drive source, such as an electric motor, or cause a malfunction. The parts were connected via anti-vibration rubber, etc.

FIGS. 1 to 3 show conventional examples of vibrating sieving devices, in which 1 is the main body of the sieving device, and 2 has a built-in oscillator for the sieving device. 3 is a drive device for this vibrating sieve device;
Figure 2 shows the details. It is driven by an electric motor 4, and power is transmitted to a drive shaft 9 supported by bearings 7 and 8 via, for example, V-belt pulleys 5 and 6. Here, the drive shaft 9 and the oscillator shaft 10 on the oscillator 2 side are coupled via an intermediate shaft 11 by two anti-vibration joints 12 and 13. FIG. 3 is a detailed sectional view between the pulley 6 and the oscillator shaft 10 in the drive device 3. In this conventional example, an intermediate shaft 11 is provided to enhance the vibration-proofing effect, and vibration-proof joints are installed at two locations. The anti-vibration joint parts 11 and 12 are formed into a spherical shape between the flanges 14 and 15 and 14' and 15' provided at the joint part of the respective shafts. A plurality of anti-vibration rubbers 16 with bolts 17 passed through them are clamped between the flanges 14, 15 and 14', 15', and power is transmitted from the drive shaft 9 to the intermediate shaft 11, through the anti-vibration rubbers 16.
The signal is transmitted to the oscillator shaft 10.

When this device is operated and vibration is generated for the sieve in the oscillator 2, this vibration is absorbed by the elastic part of the vibration-proof rubber 16 provided in the vibration-proof joint parts 12 and 13, and the vibration is absorbed here. Because it attenuates,
The influence of this vibration on the drive shaft 9 is reduced.

However, in the conventional anti-vibration rubber structure as described above, since power is transmitted through the anti-vibration rubber, the anti-vibration rubber itself is required to have a certain degree of rigidity in order to withstand the rotational force. When transmitting a large amount of power, the number of vibration isolators installed is increased. Furthermore, since the mounting bolts penetrate through the vibration isolating rubber in the axial direction and are abutted, this acts as a restraining force in the axial direction. Therefore, the amount of displacement of the elastic portion for absorbing vibrations is reduced, making it difficult to completely absorb the vibrations of the oscillator shaft. Furthermore, if two or more vibration-proof joints are provided as in the conventional example to increase this vibration-proofing effect, an additional intermediate shaft will be required, making the drive shaft device longer and the entire device larger. It is not economically advantageous either.

The vibrating sieve device of the present invention was developed to improve the above-mentioned drawbacks, and by increasing the vibration-proofing effect of the vibration-proof joint in the drive shaft device, the drive shaft device can be made smaller and the entire device can be improved. The purpose of this is to provide a device that is economical through downsizing and has high vibration absorption efficiency, and consists of a vibrating screen having a drive device and an oscillator driven by the drive device. In the device, a flat elastic body is formed into a U-shape between opposing flanges of the drive shaft and the oscillator shaft, and one end of the U-shaped elastic body is attached to the drive shaft, and the other end is attached to the flange surface of the oscillator shaft. , a plurality of them are attached at symmetrical positions with respect to the shaft center, and the power from the drive shaft side is transmitted to the oscillator shaft via the elastic body, and an example thereof will be explained below with reference to the drawings. .

FIG. 4 is a front view of the vibrating sieve device, with 21
22 is an oscillator for the sieving device 21, and 23 is a driving device for the vibrating sieving device, a detailed plan view of which is shown in FIG. 24 is a driving electric motor, and power is transmitted to a driving shaft 29 supported by bearings 27 and 28 via belt pulleys 25 and 26. Reference numeral 30 is an oscillator axis, which is the oscillation axis of the oscillator 22. The drive shaft 29 and the oscillator shaft 30 are coupled by a shaft coupling device 31. 6 and 7 show details of the shaft coupling device 31. Here, FIG. 6 is a partial cross-sectional plan view of the shaft coupling device 31, and FIG. 7 is a cross-sectional view taken along the line A-A in FIG. FIG. Here, 29 is a drive shaft, 30 is an oscillator shaft, and flanges 32 and 32' are attached to the opposing end surfaces of these shafts, respectively. 33
is an elastic body formed by curving a flat plate into a U-shape, and is made of an elastic material such as a metallic elastic material or a hard rubber synthetic resin elastic body, and each end of the U-shape has a flange. It is inserted between the flanges so as to be in contact with the inner surfaces of the flanges 32 and 32'.
Abutment plates 34, 34' are provided on the inner surfaces of 2, 32', and a flange 32 and a abutment plate 34 are provided on the drive shaft 29 side.
The elastic body 33 is held at one end by the screws, and the flange 32, the elastic body 33, and the contact plate 34 are fastened to the flange 32 by, for example, a countersunk bolt 36.
Similarly, the oscillator shaft side 12 is fastened to the flange 32' with the other end of the elastic body 33 being held between the flange 32 and the contact plate 34'. As described above, a plurality of elastic bodies 33 are attached to the flange surface with the axis centered. In this embodiment, the elastic body 33 has four
However, if the transmitted horsepower increases,
It is also possible to increase this quantity.

Since this device is constructed as described above, the rotational force from the drive shaft 29 is transferred from the flange 32 to the elastic body 3.
3 to the oscillator shaft 30. In this case, the elastic body 33 has a flat plate shape, and the long side of its cross section is parallel to the direction in which the rotational force is transmitted, that is, its section modulus is large. Since the rotational force from the drive shaft 29 is strongly transmitted to the oscillator shaft 30. On the other hand, among the vibrations generated on the oscillator shaft 30 side, the vibrations generated in the centrifugal direction with respect to the rotational direction act in a direction that changes the U-shaped deflection of the elastic body 33, and the vibrations generated in the axial direction as well. Similarly, the elastic body 33 acts in the direction of changing the U-shaped deflection of the elastic body 33, and both act in the direction where the section modulus of the cross section of the elastic body 33 is small. 30, where the vibrations are completely absorbed and are not transmitted to the drive shaft 29.

As explained above, the vibrating sieve device according to the present invention completely absorbs the vibrations generated on the oscillator side by using a simple shaft joint device. In contrast to methods such as installing two or more anti-vibration joints in a machine, this device can provide a vibration-proofing effect that is more than conventional with just one joint. This has a great effect on the production and cost reduction.

[Brief explanation of the drawing]

Figure 1 is an overall front view of a conventional vibrating sieve device.
2 is a plan view of the drive device shown in FIG. 1, FIG. 3 is a detailed sectional view of the shaft portion of FIG. is the fourth
FIG. 6 is a partially sectional plan view of the shaft coupling device, and FIG. 7 is a front view taken along the line AA in FIG. 6. 21... Sieving device, 22... Oscillator, 23...
... Drive device, 29 ... Drive shaft, 30 ... Oscillator shaft, 31 ... Shaft coupling device, 32, 32' ... Flange, 33 ... Elastic body, 34, 34' ... Contact plate.

Claims (1)

[Scope of utility model registration request] In a vibrating sieve device having a drive device and an oscillator operated by the drive device, a flat elastic body is formed in a U-shape between opposing flanges of the drive shaft and the oscillator shaft, and the U-shape of the elastic body is One end is attached to the flange surface of the drive shaft, and the other end is attached to the flange surface of the oscillator shaft so as to be symmetrical with respect to the shaft center, so that the power on the drive shaft side is transmitted to the oscillator shaft via the elastic body. vibrating sieve device.