JPS6233502Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a fixed position stopping device for a rotating machine.

When a transmission drive motor and a transmission are connected via a coupling, the bolt holes of the couplings provided on the two are often misaligned. For this reason, an operator rotates the transmission drive motor or the transmission to align the bolt holes of the two, and then connects the two through bolts. As a result, when a large number of transmissions were tested, it took a considerable amount of time to align the bolt holes.

In view of the above-mentioned prior art, the object of the present invention is to provide a fixed position stopping device for a rotating machine which always stops a transmission drive motor in a fixed position. The configuration of the present invention which achieves this object is characterized in that a cylindrical stop coupling is fitted onto the shaft of a rotating machine, a pair of stop grooves having guide grooves whose depth gradually increases in the opposite direction to the rotation direction are engraved on the circumferential surface of the stop coupling at positions 180° apart in the rotation direction, a pair of stop arms having rollers at their tips which engage with each of the stop grooves are positioned opposite each other across the stop coupling and are supported so as to be movable in the radial direction from the bottom surface of the stop groove to a position where the rollers do not touch the circumferential surface, and a detector is provided to detect the number of revolutions of the stop coupling, and the stop arms are adapted to move toward the center of the stop coupling when the power to the rotating machine is turned off and the number of revolutions drops to a predetermined value.

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

The fixed position stopping device for a rotating machine of this embodiment is attached to a mission drive motor 2, as shown in FIG. At this time, the mission drive motor 2 is connected to the mission 3 via couplings 2a and 3a.

Therefore, the detailed structure of the fixed position stopping device 1 for a rotating machine installed in this manner will be explained with reference to FIGS. 2 to 6.

FIG. 2 shows a state in which the operation of the fixed position stopping device 1 for a rotating machine is completed. As shown in the figure, the stop coupling 6 in which the stop grooves 4a, 4b and the detection groove 5 are formed is attached to the shaft 7 of the mission drive motor 2.
It is attached to. The rollers 8a, 8b that fit into the stop grooves 4a, 4b are pivotally supported by the stop arms 10a, 10b by pins 9a, 9b.
The stopping arms 10a, 10b are located opposite to each other with the stopping coupling 6 interposed therebetween, and are sandwiched between dampers 11a, 11b at the top and bottom, respectively, and pins 12a,
It is pivotally supported by support arms 13a and 13b by 12b. One end of the support arms 13a, 13b is pivotally supported on a base 15 by pins 14a, 14b, and the other end is connected to a piston rod 17 via an opening/closing arm 16. Connecting arm 18
a, 18b via pins 19a, 19b. The opening/closing arm 16 is pivotally supported by a support frame 21 by a pin 20, and the cylinder 22 having the piston rod 17 is supported by a pin 23.
It is pivotally supported on the outer frame 24 by. This outer frame 2
4, although not shown, works together with the detection groove 5 to detect the rotation speed of the stop coupling, and supplies pressure oil to the cylinder 22 when the rotation speed reaches a fairly small predetermined value. It is equipped with a detector that issues commands. That is, when the mission drive motor 2 is driving the mission 3, in this embodiment, as shown in FIG. However, the power to the transmission drive motor 2 is turned off and the rotation speed decreases.
When the rotational speed drops to a predetermined value, a command is issued from the detector and pressure oil is supplied to the cylinder 22. As a result, the piston rod 17 moves to the right in FIG.
Rotate clockwise around 0. Therefore, the support arm 19 is connected via the connecting arms 18a and 18b.
a and 19b are pulled closer to each other.
As a result, the stopping arms 10a and 10b approach the stopping coupling 6 from the left and right sides, and finally the rollers 8a and 8b move towards the stopping coupling 6.
is pressed against. At this time, the stop coupling 6
Since the rollers 8a and 8b are rotating, the rollers 8a and 8b are guided by the guide grooves 4c and 4d and enter the stop grooves 4a and 4b as shown in FIG. Note that FIG. 3 is a cross-sectional view taken along line A--A in FIG. 2.

Here, the detailed structure of the stop coupling 6 will be explained based on FIGS. 5 and 6. As shown in both figures, the stop grooves 4a, 4b carved in the stop coupling 6 have guide grooves 4c, 4d whose depth gradually increases. The stop groove 4a is located on the side opposite to the mission drive motor of the stop coupling 6, and a stop groove 4b is cut on the mission drive motor side at a position 180 degrees apart in the radial direction from this position. Further, an insertion hole 6a into which the shaft 7 is inserted is bored in the center of the stop coupling ring 6.

In this embodiment, during operation of the transmission drive motor 2, the state is as shown in FIG. 4. Next, the power to the transmission drive motor 2 is turned off, and when the rotational speed decreases to a predetermined value, pressure oil is supplied to the cylinder 22, and the piston rod 17, opening/closing arm 16, and connecting arm 18
a, 18b and support arms 13a, 13b work together to bring the stopping arms 10a, 10b close together so as to sandwich the stopping coupling 6, and finally the rollers 8a, 8b are pressed against the stopping coupling 6. At this time, the stop coupling ring 6 is
The rollers 8a and 8b rotate without stopping when they are pressed against each other, and stop when the rollers 8a and 8b are guided by the guide grooves 4c and 4d and fit into the grooves 4a and 4b. At this time, the roller 8a is in the stop groove 4a.
In addition, since the rollers 8b fit into the respective stop grooves 4b, the mission drive motor 2 always stops at a fixed position. Therefore, if the bolt holes of the coupling ring 3a of the transmission 3 are always fixed at a fixed position, the positions of the bolt holes of the coupling rings 2a and 3a of the transmission drive motor 2 and the transmission 3 will always be aligned, and the connection between the two will be ensured. It can be done quickly.

As specifically explained above in conjunction with the embodiments, according to the present invention, a stopping groove is provided on the circumferential surface of the stopping coupling connected to the rotating machine, and the stopping roller is activated when the rotation of the rotating machine decreases. Since the stopping arm having the rotating machine is inserted, the rotating machine can always be stopped at a fixed position. Further, according to the present invention, a pair of stopping grooves are provided in the stopping coupling ring at a distance of 180 degrees, and a pair of stopping arms are positioned to face each other across the stopping coupling, so that the stopping coupling is stopped by both of the stopping arms. Since the coupling is locked in such a way as to sandwich the rotating machine, no unreasonable force is applied to the shaft of the rotating machine in the direction perpendicular to the axis when the machine is stopped, and the rotating machine will not be damaged even if it is frequently used. In addition, since the locking force of the stopping coupler is shared between the two stopping arms, the force acting on each stopping arm can be reduced, thereby reducing the rigidity of the stopping arm. It is possible.

[Brief explanation of drawings]

Fig. 1 is an overall view showing an embodiment of the present invention attached to a mission drive motor, Fig. 2 is a front view showing the embodiment in a state in which its operation is completed, and Fig. 3 is the same as that shown in Fig. 2. 4 is a front view showing this embodiment; FIG. 5 is a front view showing the stop coupling of this embodiment;
The figure is a sectional view thereof. In the drawing, 2 is a transmission drive motor, 4a,
4b is a stop groove, 4c and 4d are guide grooves, 6 is a stop coupling, 7 is a shaft, 8a and 8b are rollers,
10a and 10b are stopping arms.

Claims (1)

[Scope of utility model registration request] A cylindrical stop coupling is fitted onto the shaft of a rotating machine, and a pair of stop grooves are formed on the circumferential surface of the stop coupling, the depth of which gradually increases in the direction opposite to the rotation direction. A pair of stop arms are provided at positions 180 degrees apart from each other, and a pair of stop arms each having a roller at its tip that engages with each of the stop grooves are positioned opposite to each other across the stop coupling. The roller is supported so as to be movable in the radial direction from the bottom surface of the stopper groove to a position where it does not touch the circumferential surface, and is further provided with a detector for detecting the number of rotations of the stopper coupling, 1. A fixed position stopping device for a rotating machine, characterized in that the stopping arm moves toward the center of the stopping coupling when the rotational speed decreases to a predetermined value.