JPH042397A - Vibration preventing device for dehydrator - Google Patents

Abstract

PURPOSE:To improve attenuating effect of a large-sized dehydrating tank and to obtain excellent vibration preventive performance by providing an inner vibration preventive tube inside a vibration preventive spring addition to an outer vibration preventive tube provided outside the spring for supporting a dehydration motor. CONSTITUTION:Vibration is attenuated by a friction between an inner vibration preventive tube 28 and an outer vibration preventive tube 27 with a vibration preventive spring 22, the lower end 31 of the tube 27 is brought into contact with the flat surface 32 of a base 1, the upper end 33 is brought into contact with a flange 34 of an upper spring seat 23, the lower end 35 of the tube 28 is brought into contact with the upper end of the seat 21, and the upper end 37 is brought into contact with the lower end of the seat 38. Accordingly, a vertical load at the time of charging cloth load is distribute to the tubes 27, 28 to eliminate the buckling of the spring 22 to be inclined. Accordingly, since the tubes 27, 28 prevent deflection of the spring 22 to a predetermined value or more, the same effect as the increase in the spring constant of the spring in the vertical direction is provided. Further, since the spring constant of the spring in the lateral direction may not be strengthened, probability of bringing a dehydration tank into contact with a water receiving tank for causing malfunction at the time of starting can be remarkably reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a vibration isolator that damps vibrations in a dehydrator.

[Conventional technology]

As shown in Japanese Patent Publication No. 56-49626, a conventional vibration isolating device for a dehydrator has a structure in which a vibration isolating rubber tube is simply placed over the outside of a vibration isolating spring.

[Problem to be solved by the invention]

The above conventional technology does not consider improving the damping effect, and as the capacity increases, the outer diameter of the dehydration tank increases, and the vibration amplitude due to unbalance tends to increase. Since the gap between the dehydration tank and the water receiving tank cannot be made very large, there is a high probability that the dehydration tank will hit the water receiving tank during startup, resulting in poor startup performance.

The present invention aims to improve the damping effect of a large dehydration tank and obtain good vibration isolation performance.

[Means to solve the problem]

In order to achieve the above purpose, in addition to the outer vibration isolating tube installed outside the vibration isolating spring that supports the dehydration motor that has been adopted in the past, an inner vibration isolating tube is also installed inside the vibration isolating spring. This improves damping performance.

[Effect]

The inner vibration isolating tube installed inside the vibration isolating spring has multiple knurled protrusions on the outer periphery, and is inserted with a tightening margin to the vibration isolating spring to prevent friction between the vibration isolating spring and the inner vibration isolating tube. At the same time, when the dewatering tank is strongly pressed down from above when a cloth load is applied, the upper spring seat contacts the upper end surface of the inner vibration isolating tube, and the lower spring seat contacts the lower end surface, and the dewatering tank This is to suppress the collapse of the roof.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, a dehydration tank shaft 15 of a dehydration tank 8 having a fluid balancer 9 on the upper part is directly connected to a motor shaft 14 of a dehydration motor 3 supported by a vibration isolator 2 on a base 1 via a coupling 6. has been done.

Further, a rubber bellows 7 for intermediate vibration-proof support is provided at the bottom of the water tank supported by the upper part of the outer frame 2.

On the other hand, as a safety device, a brake 4 is provided at the top of the dehydration motor 3, and braking can be performed by friction between the brake lining 5 and the drum surface of the coupling 6. , a dehydration tank hatch 1] is provided with a transparent inner lid that can be opened and closed freely.

Next, the vibration isolating device of the present invention will be explained in detail. Second
In the figure, the lower spring seat insertion hole 2 provided in the base 1
A semicircular spiral groove is formed on the outer periphery of the lower spring seat 21 that is fitted and fixed to the lower spring seat 5, and the lower end of the vibration isolating spring 22 is connected with about two turns. The upper spring seat 24 is coupled to the spring seat and is fitted and fixed to the dehydration motor 3 through the upper spring seat insertion hole 26 of the dehydration motor 3.

On the other hand, an outer vibration isolating tube 27 is provided on the outer periphery of the vibration isolating spring 22, and an inner vibration isolating tube is provided on the inner periphery of the vibration isolating spring 22.

FIG. 3 shows a cross section of the vibration isolator, and the outer vibration isolator tube 27 is formed in a cylindrical shape with a rectangular cross section, and at the inner periphery of the rectangular tube, damping due to friction with the vibration isolator spring 22 is achieved. The inner vibration isolating tube 28 is formed into a cylindrical shape with a circular cross section, and a knurled protrusion 30 is provided on the outer periphery of the inner vibration isolating tube 28 to prevent friction with the inner periphery of the vibration isolating spring 22. It is designed to produce a damping effect.

Normally, when the diameter of the dewatering tank becomes larger and the amount of fabric loaded increases, in order to eliminate the tilting of the dehydrating tank when loading the fabric, a method is adopted in which the wire diameter of the anti-vibration spring is increased and the spring constant is strengthened. However, if the spring constant of the anti-vibration spring is increased, the vibration amplitude at startup will increase, and during steady rotation, the excitation force of the dewatering motor 3 will cause the base 1. The transmission force to the outer frame 2 increases, vibration and noise increase, making the user uncomfortable during use.

In order to solve the above-mentioned problems, the present invention damps vibrations by friction between an inner vibration isolating tube and an outer vibration isolating tube and a vibration isolating spring, and the lower end surface 31 of the outer vibration isolating tube 27 is connected to the flat part 32 of the base 1. The upper end surface 33 is connected to the flange portion 34 of the upper spring seat 23, and the lower end surface 35 of the inner vibration isolating tube 28 is connected to the upper end surface 36 of the lower spring seat 21.
In addition, since the upper end surface 37 is formed so as to come into contact with the lower end surface of the upper spring seat 38, the vertical load when the cloth load is applied is distributed between the outer vibration isolating tube 27 and the inner vibration isolating tube 28. This prevents the vibration isolating spring 22 from buckling and tilting.

Therefore, in order to prevent the vibration isolating spring 22 from deflecting beyond a certain level between the outer vibration isolating tube 27 and the inner vibration isolating tube 28, the effect is substantially the same as that of increasing the spring constant in the vertical direction. Moreover,
The spring constant in the lateral direction does not need to be strong, so at startup,
The probability of startup failure due to the dewatering tank 8 hitting the water receiving tank 13 can be greatly reduced.

〔Effect of the invention〕

According to the present invention, as explained below, even if the diameter of the dehydration tank becomes larger and the amount of cloth loaded increases, the tilt during dewatering when the cloth load is input is reduced, and the dehydration tank is Not only does this reduce the probability that the water will hit the water tank, improving start-up performance, but it also reduces the transmission of vibration to the outer frame, etc., making it possible to provide a vibration isolating device with low vibration and low noise.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of one embodiment of the vibration isolator of the present invention installed in a dehydrator, Fig. 2 is an enlarged view of the vibration isolator part of Fig. 1, and Fig. 3 is the same as that of Fig. 2. It is an II sectional view. ]...Base, 2...Vibration isolator, 3...Dehydration motor, 21...Lower screw washer, 22...Vibration isolating spring, 23...Upper spring seat, 27...Outer vibration isolator Pipe, 28. Inner vibration isolation pipe.

Claims (1)

[Claims] 1. An upper spring seat connected to the dehydration motor and a lower spring seat connected to the base are connected by a vibration isolating spring, and an outer vibration isolating pipe is provided on the outside of the vibration isolating spring, and an inner vibration isolating pipe is provided on the inside of the vibration isolating spring. A vibration isolating device for a dehydrator that improves the vibration damping effect. 2. When the load is applied, the lower end surface of the inner vibration isolating pipe provided inside the vibration isolating spring is placed on the upper end surface of the lower spring seat, and the upper end surface of the inner vibration isolating tube is placed on the lower end surface of the upper spring seat. A vibration isolating device for a dehydrator according to claim 1, characterized in that the vibration isolating device is brought into contact when the device is bent.