JPS6060394A - Vibration absorbing connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tubular connector, and more particularly to a connector configured to effectively absorb vibrations.

When connecting a tube to a member of the device 5 that generates vibrations, a connector is attached primarily for the purpose of absorbing vibrations in order to prevent the vibrations from being transmitted to other parts via the tube. FIG. 1 shows an example of the arrangement of this connector. Reference numeral 1 is a crushing device that crushes coal to produce pulverized coal, and this device generates large vibrations in the coal crushing section, the power system that drives the crushing section, and the falling coal supply section. As a whole, these components resonate, causing large and complex vibrations. Reference numeral 2 denotes connectors attached to piping 3 for pneumatically transporting pulverized coal produced by the crushing device to a burner or the like. In this connector, two tube bodies 3a and 3b are brought into contact with each other, and a cushion material is placed in the abutted portion to prevent vibrations generated in the crushing device from being transmitted to the tube body 3a side. In this case, asbestos is often used as a cushioning material, but this asbestos does not necessarily have sufficient vibration absorption, and in particular, when used for a long time, it compresses and its vibration-proofing properties decrease, and in extreme cases,
There are also cases where 0 to 95% of vibrations are transmitted. If vibration is transmitted in this way, the pipe body 3a
Damage occurs to the ring 4 supporting the load and the tube body 3a at the contact surface with the ring 4. Furthermore, when this vibration is transmitted to the beam 6 side via the support wire 5, the beam vibrates, and this vibration is transmitted to the entire building, causing vibration and hum of the building.

This invention was constructed in view of the above-mentioned problems,
It is an object of the present invention to provide a structure of a connector that absorbs vibrations on the side of the device 1 member and prevents them from being transmitted to the pipe body side.

In short, this invention arranges a hollow cushion member made of a flexible material such as rubber between two members constituting a connector, and effectively damps vibrations by the gas in the hollow part and the expansion and contraction of the flexible material. It is designed so that it can be absorbed into

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 10 denotes a first connector component;
1 is a second connector component. Among these, the first connector component member (hereinafter referred to as "first member") 10 is a tube body 12 (tube body 3b in FIG. 1) connected to the device that generates vibration.
compatible). Reference numeral 13 denotes a shelf portion formed in an annular shape on the upper outer peripheral edge of the first member 1o. Reference numeral 14 designates a cushion member disposed on this shelf, which is a hollow member made of a flexible material such as rubber, into which gas, for example air, is pressurized, like a tire tube.

On the other hand, the lower edge of the second connector component member (hereinafter referred to as "second member") 11 is arranged to be located within the above-mentioned shelf 13, and a cushion is provided between the first member 1o and the second member 11. The member 14 will be interposed. 15 is a tube (corresponding to the tube 30 in FIG. 1) connected to the second member.

Note that the load on the second member 11 and the tube body 15 is supported by the ring 4° (3) and the cable 5 shown in FIG. suspended in condition.

16 is a pressure gauge that measures the pressure inside the cushion member 14;
Reference numeral 17 represents a hose for discharging or pressurizing gas within the cushion member, and reference numeral 18 represents a valve.

In addition, the seal riverbank-19 may be attached so as to cover the entire connector.

In the device configured as described above, vibrations from the tubular body 12 are effectively absorbed by the cushion member 14. In other words, vibrations are effectively absorbed by the expansion and contraction of the flexible material constituting the cushion member 14 and the expansion and contraction of the gas within the cushion member, and unlike asbestos, it does not harden due to long-term use.

The inventors prototyped the above-mentioned connector and actually measured the vibration absorption effect. As a result, the vibration on the tube body 15 side was reduced to about 13 compared to 100 in the case of the conventional method, and it was confirmed that this method is extremely effective.

Note that the cushion member 14 is filled with gas at a predetermined pressure in advance (4), and if it is not used in this state, the hose 17 is attached and the velocity and vibration of the fluid passing inside the tube are adjusted. It would be more effective to adjust the internal pressure by pressurizing and discharging gas in response to changes in the mode, etc. In this case, if the pressure measuring device 16 is used, the gas can be pressurized and discharged accurately.

In the connector shown above, a negative cushion member is arranged in the shelf portion 13, but the invention is not limited to this, and cushion members of second grade or higher may be arranged in an overlapping manner. This is effective because even if the gas in one cushion member escapes and the cushion member becomes banked, its function as a cushion member can be maintained to a considerable extent.

By implementing this invention, much of the vibration that should be transmitted through the tube is absorbed, and its performance does not deteriorate even after long-term use.

Further, the structure is relatively simple, lightweight, easy to manufacture, and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a side view of a tube for pneumatic transport of pulverized coal showing the arrangement of the connector, and FIG. 2 is a sectional view of the connector according to the present invention. 10...First connector component 1]-...
... Second connector component 14 ... Cushion member 16 ... Pressure measuring device 17 ... Hose

Claims (1)

[Claims] 1. A device that is placed between two tubes to connect the two tubes and to prevent vibrations from being transmitted from one tube to the other. a first connector component, a hollow cushion member made of a flexible material, and connected to the first connector component via the cushion member; A vibration absorbing connector 0 characterized in that it consists of a second connector constituent member 2. A passage for pressurizing and discharging gas, and/or a device for measuring internal pressure is connected to the cushion member. A vibration absorbing connector according to claim 1.