JPS5929144Y2 - Fixed shaft coupling device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a fixed shaft coupling device.

Conventionally, fixed shaft joints such as flange joints have been used to connect the prime mover side and driven side of motors, etc., by attaching joint flanges to each shaft end and tightening both flanges with bolts, etc. .

However, for example, a ball bearing inserted into the Eva slave side,
When inspecting, repairing, or replacing parts of oil seals or mechanical seals, it is necessary to move the prime mover side or the driven machine side to separate the two shafts, and then perform the above inspections and repairs from there.

It is difficult and time-consuming to move either the driven side or the driving side, and it also requires time and effort to adjust the axis when reconnecting.

For this reason, you can easily take these out without moving any of the above.
There is, for example, Japanese Utility Model Publication No. 44-1605 as a means for automatically restoring the shaft center during assembly.

In this structure, a driving shaft and a driven shaft (stirring shaft) are fixed facing each other with a required distance between them, and a joint flange is attached to each shaft end. The drive and driven shafts are connected by intervening spacer couplings, each of which has a joint flange attached to each end of a short tube with a length corresponding to the distance.

However, in the above structure, since the spacer coupling is installed concentrically with the drive shaft and the driven shaft, the flange end faces on both end faces of the spacer coupling, and the flange end faces on the drive shaft side and the driven shaft side that are opposite to the flanges. To,
A male-type and female-type fitting part is formed which fit together.

Therefore, in order to remove the spacer coupling, it is necessary to move either the drive shaft side flange or the driven shaft side flange in the axial direction so that the male and female fitting portions are disengaged from each other. Therefore, when attaching and detaching, the amount of movement is smaller than when there is no spacer coupling, but in the same way, since one of them has to be moved even a little, attaching and detaching requires a lot of effort.

In addition, as an alternative to the above-mentioned male and female fitting parts, the spacer coupling can be attached to the drive shaft using the mounting bolts of the opposing flanges.
Some attempts have been made to hold the shaft concentrically with the driven shaft, but
In this case, at least a plurality of bolt holes must be precisely finished by reaming, and the bolt itself must also be precisely finished so that it will fit statically into the reamed hole, which is time-consuming in terms of machining and tightening. There are other problems.

In view of this, the present invention has been developed by fixing both the driven side and the driving side without moving them, facing each other with a certain interval, and between the joint flanges attached to the shaft ends. It is an object of the present invention to provide a fixed shaft joint that can easily and reliably attach and detach the spacer coupling having the same length as the interval and hold both ends and the coaxial core.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In the figure, the fixed shaft coupling device C includes couplings A and A fixed to both shaft ends facing each other with a gap between the driving and driven sides (however, the driving shaft side and the driven shaft side have the same structure. , the figure shows only one coupling), an opposing coupling A, and a spacer coupling B inserted between A.

The coupling A has a joint flange 1 attached to the tip of a boss portion 10 that is fitted onto the shaft end of a driving shaft or a driven shaft.

On the front surface of this flange 1, a circular acid inlay 2 having a required diameter and a required depth is formed at the center of the flange, and the center of this acid inlay is made to coincide with the center of the flange.

Further, a notch 3 is provided on the flange end face of the outer peripheral portion of the acid spigot 2 so as to allow a salt spigot to be described later to be inserted toward the center of one or more acid spigots 2, that is, on a radial line passing through the center of the acid spigot.

This notch 3 is provided so that its width is slightly larger than the width of the salt spigot, and the depth of the notch is slightly larger than the amount of protrusion of the salt spigot.

The spacer coupling B is made up of a short tube having a length equal to the distance between the facing circumferential flanges 1, 1 fixed to both ends of the driving and driven shafts, and flanges 4, 4 provided at both ends of the short tube. A salt spigot 5 is provided protruding from the front surface of each flange 4.

This salt spigot 5 has a circular projection on the end face of the flange having a diameter that is approximately equal to the diameter of the acid spigot 2, that is, a diameter that allows the salt spigot to fit snugly into the female spigot 2. The circular protrusions are integrally provided so as to match with each other, and the outer sides of the circular protrusions are cut at equal intervals between the centers so as to be flush with the side surfaces of the flange to form an oval shape.

However, the salt spigot 5 may be provided only on one flange 4, or if the salt spigot 5 is provided on both flanges 4, the longitudinal directions of both male and female spigots should be aligned in the same direction.

Also, a large number of bolt fastening holes 6, 6 are bored in the flanges of both the couplings A and the spacer coupling B, and bolts are applied between the matching bolt fastening holes between the two flanges to integrate them. It is something.

In the fixed shaft coupling device C constructed as described above, the couplings A and A are respectively fixed to the opposing shafts, and a spacer coupling B having a length equal to the distance between the two couplings is used. , insert the spacer coupling from the direction perpendicular to the axis so that the salt spigots 5 at both ends of the spacer coupling fit into the notches 3, 3 of both couplings A, A.

Next, this spacer coupling B is rotated after confirming that the salt spigot is completely inserted and fitted into the female spigot.

This rotation angle may be adjusted as long as both ends of the salt spigot in the longitudinal direction are out of the notch.

By rotating this spacer coupling, both end surfaces of the male spigot come into contact with the inner circumferential surface of the acid spigot, and the centers of both spigots, that is, the axes of both camp rings are aligned.

In this state, bolts are then applied between the flanges to secure them.

According to the present invention, the spacer coupling having the salt spigot is attached to the front surface of the flange fixed to the shaft side, since the acid spigot is provided with a notch for inserting the salt spigot from the direction perpendicular to the shaft center. There is an advantage that the coupling and spacer coupling can be easily attached and detached, and the shaft alignment can be easily performed by simply inserting the salt spigot along the notch so as to fit it and rotating it.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view, FIG. 2 is a side view, and FIG. 3 is an explanatory view when installed. A...Coupling, B...Spacer coupling, C...Fixed shaft coupling device, 1...
...Flange, 2...Acid inlay, 3...
...Notch, 4...Flange, 5...
Salt spigot 6...Port fastening hole.

Claims (1)

[Scope of utility model registration request] A spacer cup equipped with flanges attached to the shaft ends of the driving side and the driven side, which are arranged oppositely with a gap, and flanges inserted between the flanges and connected to the seven flanges at both ends. A circular female spigot that matches the shaft center is carved on the front surface of the flange that is attached to the end of the shaft, and radial notches are provided on the outer periphery of this female spigot to correspond to the flange. A fixed shaft coupling with an oval-shaped male spigot protruding from the shaft center on the front surface of the flange of the spacer coupling, with a length to fit into the female spigot and a width to fit into the notch. Device.