JPS6326572Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detent device for a bearing fixing nut used at the shaft end of a roll when a tick remover is used.

Generally, as shown in FIG. 1, a rolling roll 1 is supported by a bearing 3 in an axle box 2 at its shaft end. This bearing 3 is usually fixed in position by a nut 6 having a screw 5 screwed into a screw 4 carved on the outer periphery of the shaft portion of the rolling roll 1, and further by a nut 6.
is a rotation stopper 7 provided at the tip of the nut 6.
, an engagement hole 8 recessed in the outer periphery of the tip of the roll 1 shaft.
It is pushed in by a spring 9 and is prevented from rotating. After installing nut 6,
A retainer 10, an oil seal 11, a seal presser 12, etc. are attached to the outer periphery of the holder. Furthermore, 1
3 is a retainer ring, and 14 is a retainer screw for the spring 9.

However, if the entire equipment is small, the axle box 2 and bearing 3 may not be designed to be large due to the surroundings. In such a case, the nut 6 must necessarily be made thin, but the The stopper 7 cannot be made too small due to its function and strength, so if the nut 6 is made thinner,
The rotation stopper 7 will protrude inside or outside the nut 6. However, since the shaft diameter of the roll 1 is often regulated, it cannot be made to protrude inwardly, and on the other hand, if it is made to protrude outward, it becomes impossible to attach the retainer 10, oil seal 11, etc. There was a problem in that the tool could not be attached and the removal remover could not be used.

In view of these circumstances, the present invention has been developed to provide a bearing fixing nut that allows retainers, oil seals, etc. to be installed without any trouble even when using a thin bearing fixing nut, and allows the use of a choke remover. This was made to provide a rotation prevention device.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 2 and 3, the detent device of the present invention can be fitted to the outer circumference of the nut 6 and corresponds to the through holes 15 bored at required intervals in the circumferential direction of the tip of the nut 6. a cylinder 19 inserted into the through hole 15 and the storage hole 16 and fixed in position with a snap spring 18; a pin 20 for positioning the
A rotation stopper 7 having an inclined surface 21 at the end of the roll 1 shaft at the tip, protruding from the cylinder 19, and fitting into an engagement hole 8 recessed in the outer periphery of the shaft tip of the roll 1.
, a spring 9 that is inserted through a screw hole 22 carved in the peripheral wall of the retainer ring 17 to apply a protruding force to the rotation stopper 7, and a retainer screw 14 that closes the screw hole 22 and holds the spring 9. Become.

Next, a detailed procedure for assembling the device of the present invention will be explained.

First, the bearing 3 is inserted into the axle box 2 without the rolling roll 1, the nut 6 is pressed against the outer end surface of the bearing 3, and the retainer 10, oil seal 11, seal retainer 12, etc. are sequentially inserted into the nut 6. and fix the retainer 10 to the axle box 2.

After that, the retaining ring 17 is fitted to the outer periphery of the tip of the nut 6, and the through hole 15 of the nut 6 and the storage hole 16 of the retaining ring 17 are aligned, and then the rotation stopper 7 is made slidable. The equipped cylinder 19 is inserted into the housing hole 16 of the presser ring 17 through the through hole 15 from the inside of the nut 6, and then the cylinder 1
9 and the presser ring 17 in the circumferential direction using the pin 20, and the snap ring 18 is installed in the through hole 15 of the nut 6 to fix the axial position of the cylinder 19. Next, the screw of the presser ring 17 is fixed. The spring 9 is press-fitted into the cylinder 19 through the hole 22, and the retaining screw 14 is screwed into the screw hole 22 to hold the spring 9.

After the device of the present invention is assembled to the nut 6 in this manner, a choke remover (not shown) is inserted into the inner circumferential portion of the nut 6 from the left side in FIG. At this time, the tip of the tip remover hits the inclined surface 21 of the protruding detent 7, and the detent 7 is pushed into the cylinder 19 against the force of the spring 9. After that, the roll 1 is inserted into the nut 6, and the screw 5 of the nut 6 and the screw 4 of the roll 1 are screwed together by rotating the roll 1 while holding the retaining ring 17 so that it does not rotate by operating the choke remover. Screw them together and press the nut 6 onto the bearing 3. When this screwing is completed, if the position of the rotation stopper 7 and the engagement hole 8 of the roll 1 is misaligned, the roll 1 is held while holding the retaining ring 17 so that it does not rotate by operating the tie remover. Slightly reverse the rotation and adjust the position until the detent tool 7 fits into the engagement hole 8. Then, when you pull out the tip remover, cylinder 19
The rotation stopper 7 that had been pushed inward is projected by the force of the spring 9 and penetrates into the engagement hole 8, so that the nut 6 is reliably prevented from rotating.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

As explained above, according to the bearing fixing nut rotation prevention device of the present invention, the holding ring is removably fitted onto the bearing fixing nut, and the nut rotation stopper is housed by the bearing fixing nut and the holding ring. Since the cylinder is held in a removable manner, even if the bearing fixing nut is thin, it can be installed so that retainers, oil seals, etc. can be installed without any problem, and the axle box can be automatically installed and removed using a choke remover. become,
It can produce excellent effects.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is an explanatory diagram of a rotation prevention device for a bearing fixing nut of the present invention,
FIG. 3 is a directional view of FIG. 2. 1... Rolling roll, 2... Axle box, 3... Bearing, 6... Nut, 7... Stopper, 8...
Engagement hole, 9...Spring, 15...Through hole, 1
6... Storage hole, 17... Presser ring, 18... Snap spring.

Claims (1)

[Scope of utility model registration request] A through hole is drilled at the tip of the bearing fixing nut, and a presser ring having a storage hole corresponding to the through hole is removably fitted onto the nut, and is fitted into an engagement hole provided on the outer periphery of the roll shaft. A rotation stopper for a nut for fixing a bearing, characterized in that a nut rotation stopper for fixing a bearing is held in a cylinder so that it can be protruded and stored by a spring, and the cylinder is removably attached inside the through hole and the storage hole. .