JPH0211621Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fitting for attaching and detaching a coupling ring using a coil spring, which facilitates attachment and detachment work and prevents damage during handling during packaging and transportation. .

Traditionally, ordinary couplings connect the rotating shafts of equipment to transmit power.
Equipment that receives and receives power is fastened to a common floor, etc., and it is difficult to move the equipment when attaching or removing the coupling.Also, in structures where flanges are fitted together, it is difficult to move the coupling along the axis. , the work is done by increasing the distance between the flanges. In order to avoid this, a special spacer is provided between the flanges, and the coupler is installed and removed before the spacer is installed or removed, or the flanges are not provided with a spigot between the flanges, but are flush, and the outer periphery is used as a reference. The shaft centering is performed as follows, and then tightened with a tightening bolt. However, this changes the mounting accuracy and causes problems such as misalignment of the shaft center due to the transmitted power.

In addition, with flexible couplings, it is sometimes necessary to take advantage of their flexibility by driving a wedge between the pair of flanges to attach and detach them, but such work is not recommended as it may damage the shaft or coupling. Should be avoided.

Furthermore, with a torque sensor coupling that utilizes the elasticity of a coil spring/coupling, if the above-mentioned impact is applied to the coupling when it is attached or detached, or if abnormal bending stress is applied to the coil spring during handling, the high-precision torque sensor may be damaged. This can reduce precision or cause damage, and must be handled more carefully than ordinary simple couplings.

The present invention was developed in view of the above points, and only the tightening hole on the coil spring side flange of the coil spring/coupling is a screw hole, and during operation, the tightening hole on the shaft side flange forming the flange pair is passed through. and then tighten the flange with the tightening bolt.
When attaching and detaching, align the coil side flange along the axis, and compress and bring the coil spring closer together by at least the depth of the spigot of the flange using the plurality of tightening holes in the coil spring side flange and the plurality of U-shaped coil spring attachment/detachment fittings. This allows for easy attachment and detachment. This will be explained with reference to the diagram.

Fig. 1 is a cross-sectional view of the coil spring/coupling during operation, Fig. 2 is a cross-sectional view of the coil spring/coupling during attachment/detachment, and Fig. 3 is an example of a coil spring type torque sensor coupling. .

As is well known, a coil spring coupler has a pair of flanges on both ends of a coil spring, drives the pair of flanges, connects it to a driven shaft, and transmits shaft power, but the elasticity of the coil spring This allows for smooth operation by absorbing slight shaft eccentricity or oblique angle.

In addition, by detecting the torsion angle due to the elasticity of the coil spring, the transmitted torque or transmitted power can be measured. Sensor couplings have also been developed.

In Figures 1, 2, and 3, 1 is a coiled spring wound in the axial direction, and can absorb expansion and contraction in the axial direction, as well as oblique angles to the axis.
4 and 5 are drive and shaft side flanges that are coupled to driven shafts 6 and 7;
8 and 9 are wedges for connecting the coil spring 1 and the driving and driven shafts 6 and 7 to each flange 2, 3, 4, and 5; 10 and 11 are wedges for tightening flanges provided on the coil spring side flanges 2 and 3; Screw holes, 12 and 13 are bolt holes for tightening the shaft side flanges attached to the drive and driven shafts 6 and 7, 14 and 15 are flange tightening bolts for operation, 16 and 17 are flange bolts for attachment and detachment, and 18 is Male type spigot, 19 is female type fitting spigot, 20 is U-shaped coil spring attachment/detachment fitting,
21 is a relative displacement angle sensor, 22 is a flexible torsion angle transmission ring, and 23 is a displacement angle output conductor. Next, this handling will be explained. During operation, shaft power is transmitted from the drive shaft 6 to the driven shaft 7 in the state shown in FIG. In this case, the male type spigot 18 and the corresponding female type fitting spigot 19 are fitted, and the tightening screw holes 10 and 1 of the coil spring side flanges 2 and 3 are fitted together.
1 with the flange tightening bolts 14 and 15 for operation,
Both flanges 2, 4 and 3, 5 are tightened, and even if there is eccentricity or oblique angle between the shaft centers, the flexible coil spring 1 absorbs this and the shaft power is transmitted extremely smoothly. It is something.

When inspecting or otherwise attaching or detaching such a coupling, remove the aforementioned operation flange tightening bolts 14, 15, and attach/detach it to a plurality of U-shaped coil spring attachment/detachment fittings 20 as shown in Fig. 2. By tightening the flange bolts 16 and 17, the coil spring 1 can be tightened and contracted to a depth of at least 18 of the male side spigot.

Therefore, a plurality of U-shaped coil spring attachment/detachment fittings 20
The distance between both ends is set to a dimension that is smaller than the inner distance of the coil spring side flanges 2 and 3 during operation, and is equal to or more than the depth of the spigot.

By doing this, the shaft side flange 4,
Reference numeral 5 allows the coil spring side flange wedged to the coil spring 1 to be attached and detached very easily while being wedged to the shafts 6 and 7 by wedges 8 and 9.

Figure 3 shows a coil spring 1 and a relative displacement angle sensor 2.
The coil spring type torque sensor coupling equipped with 1 has been developed to have flexibility in the shaft connection and utilize this to measure and control shaft torque. These types of couplings require frequent adjustment and attachment/detachment.
The most important thing to avoid is giving a shock when attaching or detaching, but by using the coil spring attachment/detachment fitting 20 and the attachment/detachment flange bolts 16, 17 as shown in the figure, the torque sensor coupling mounted on the coil spring 1 can be attached to the shaft side. This means that it can be attached to and detached from the flanges 4 and 5 very easily. 22 is a flexible torsion angle transmission tube for transmitting the torsion angle of the coil spring to the rotation detection part (omitted in the figure) of the relative displacement angle sensor, and has a structure that can absorb eccentricity due to expansion and contraction in the axial direction and oblique angle. It uses something like a bellows and is extremely delicate compared to the coupling itself.

Next, the number of U-shaped coil spring attachment/detachment fittings 20 used for attachment/detachment is determined by the size of the coupling, and the number is two or more.

As described above, the present invention is a coil spring coupler in which the flanges of the coupler have spigots, and there is no need to provide a spacer or move the shaft side flange with respect to the shaft, and the coil spring attachment/detachment fitting and the attachment/detachment flange bolt can be used. This means that it can be attached and detached extremely easily. By sharing the female threaded hole of the flange tightening bolt for operation, the structure becomes simpler, and it is also effective in preventing damage that may occur during handling such as packing and transporting the coupling after removal.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the coil spring/coupling during operation, Fig. 2 is a sectional view of the coil spring/coupling during attachment/detachment, and Fig. 3 is an example of a coil spring type torque sensor coupling. 1: Coil spring, 2, 3: Coil spring side flange, 4, 5: Shaft side flange, 6, 7: Drive and driven shaft, 8, 9: Wedge, 10, 11: Screw hole for tightening flange, 12, 13: Shaft side flange tightening bolt hole, 14, 15: Flange tightening bolt for operation, 16, 17: Flange bolt for attachment and detachment, 18:
Male side spigot, 19: Female side fitting spigot, 20:
Coil spring attachment/detachment fitting, 21: relative displacement angle sensor, 22: flexible torsion angle transmission tube, 23: displacement angle output conductor.

Claims (1)

[Scope of utility model registration request] Utilizing the tightening screw holes on both side flanges of the coupling spring with a plurality of U-shaped metal fittings capable of allowing the coil spring to have a compression margin greater than the spigot depth of the flanges pairing with the flanges on both sides of the coupling spring, A fitting for attaching and detaching a coil spring coupling, characterized in that the coil spring can be attached and detached in a compressed state.