JPH02225850A - Belt tension regulator - Google Patents

Abstract

PURPOSE:T enable the usage without the regulation till a V belt is cut-off by regulating a distance between a first and a second device in response to the expansion of the belt with a belt tension regulator. CONSTITUTION:A first pneumatic damper 10 needs the air pressure stronger than a second pneumatic damper 11 because the load of a V belt 3 is large. Consequently, the air pressure in the damper 10 is set by a pressure regulating valve 13a higher than the air pressure in the damper 11 to be regulated by a regularing valve 13b. After starting a blower 4, when the V belt starts to be extended, the damper 10 is expanded, and the damper 11 is expanded with the force weaker than that of the damper 10, and a motor base 12 is forcedly separated so that rotary shafts of an impeller 6 and the motor 1 are always in parallel with each other. Next, after stopping the blower 4, when the V belt starts to shrink, the air in the damper 10 is deflated more than the damper 11 and the damper 10 has the compressing force stronger than the damper 11. Consequently, the base 12 can be pulled back, keeping the rotary shafts of the impeller 6 and the motor 1 in parallel with each other, and the V belt tension can always be maintained at a constant.

Description

DETAILED DESCRIPTION OF THE INVENTION 8. Field of Industrial Application The present invention relates to a belt tension adjustment device, and particularly to a belt tension adjustment device for keeping the tension of a V-belt of a blower and an exhaust fan constant.

[Conventional technology]

FIG. 1 shows a schematic diagram of a conventional blower.

In the figure, l is the motor, 3 is the pulley installed on the motor l, 8 is the V-belt, 4 is the blower, 6 is the pulley installed on the blower number, 6 is the impeller of the blower number, 7 is the blower number. The blower is composed of a base on which the motor is placed, a pace on which the eight motors are placed, and a common bed (9).

That is, the rotational force generated by the motor 1 is transmitted to the pulley 4 via the pulley 8 and the V-belt 8, thereby turning the impeller 6t to blow air. Also, motor pace? ,al
The L machine bases 8 are each fixed to a common base 9.

[Problems that the invention attempts to solve]

Equipment that uses a V-belt to transmit power, such as a blower or an exhaust fan, always has a V-belt due to its elasticity in the early stages of operation.
The belt will stretch, so stop the machine and readjust the tension on the V-belt. Furthermore, the V-belt may stretch without you noticing, causing the machine to operate in good condition and not achieving the desired performance.

The object of the present invention is to use the V-belt without adjusting it until it breaks.

[Means to solve the problem]

The belt tension adjustment device according to the present invention is l! 117) A belt tension adjustment device is provided between the device and the third mounting.

[Effect]

The present invention adjusts the belt tension! I device allows belt elongation
The distance S between the first device and the third device is adjusted accordingly.

〔Example〕

Hereinafter, embodiments of this invention will be explained in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing an example of a blower including a belt tension 'lA adjusting device according to the present invention. In the same figure, the same or equivalent parts as those explained in FIG. A detailed explanation will be omitted.

The configuration will be explained below. 10 is a first pneumatic damper, 11 is a second pneumatic damper, and Ig floating type motor base 413a is a first pressure regulating valve I3b#i. @1. Eighth pneumatic damper 10, 1
1 is attached between the base 7 and the movable motor base 13, respectively.

Next, the operation will be explained. Since the first pneumatic damper 1G has a large load due to the V-belt 8, it requires a stronger force, that is, air pressure, than the @2 pneumatic damper. Therefore, the air pressure within the first pneumatic type Dan/<10 is the first pressure regulating valve 13 a
Then, the air pressure is set to be higher than the air pressure in the second pneumatic pressure regulator 11 which is adjusted by the second pressure regulating valve 18b, and when the V-belt 8 starts to extend after the blower 4 is started, The pneumatic damper lO expands, the eighth pneumatic damper 11 expands with a force weaker than the first pneumatic damper <10, and is damped so that the axis of rotation of the impeller 6 and the axis of rotation of the motor l are always parallel. Push and release J-type motor base 12. After the blower stops, when the V-belt starts to contract, the air in the first pneumatic pipe (10) is drawn out to a greater extent than that of the second pneumatic pipe (10).
is made to obtain a stronger compressive force than the S-th pneumatic damper 11. Therefore, it is possible to pull back the movable motor base in while keeping the rotation axis of the impeller 6 and the rotation axis of the motor l parallel to each other.

As described above, the tension of the V-belt is always kept constant.

Note that the damper may be of a hydraulic type.

〔Effect of the invention〕

As explained above, according to the present invention, by keeping the belt tension of the blower and exhaust fan constant using the belt tension adjustment device, belt slip is reduced and the belt can be used without adjustment until it breaks. Become.

[Brief explanation of the drawing]

FIG. 1 shows a belt tension adjustment device according to the present invention as a mini-V belt, 10--1 first pneumatic damper 11--@
fi pneumatic Danha 18--Movable motor base, 1
8a--1st pressure regulating valve, 131)---8th pressure regulating valve

Claims (1)

[Claims] A first device that generates power, a first device that drives the power of the first device with a belt made of an elastic material, and a first device that is provided between the first and second devices and that is configured to expand and contract the belt. A belt tension adjustment device that adjusts the distance between the first and second devices in accordance with the above.