JPS6136543Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wheel attachment/detachment support device that allows the wheels attached to the saddle of an overhead traveling crane to be easily replaced.

Next, this invention will be explained in detail using illustrated examples.

The drawing shows an embodiment of this invention, in which a mounting plate 3 is fitted onto the base end of the axle 2 and fixed by welding, and four mounting bolt insertion holes 12 are provided around the mounting plate 3. are provided at equal intervals, one or two mounting bolt insertion holes are provided with female threads 5 having an inner diameter slightly larger than the shaft of the mounting bolt 4, and further provided in the web of the saddle 1 made of thin section steel. The axle 2 is fitted into the axle insertion holes provided, and the mounting bolts 4 with hexagonal holes inserted into each of the mounting bolt insertion holes 12 are screwed into threaded holes provided in the web of the saddle 1 to complete the installation. The mounting plate 3 is tightened and fixed to the web of the saddle 1 by bolts 4.

An outer race 13 of a bearing 7 made of a ball bearing is fitted inside the hollow wheel 6 and is locked by a snap spring 14. The small diameter portion 16 of the support washer 9 is fitted,
The large diameter portion 17 of the support washer 9 is engaged with the end surface of the inner race 8, and the support washer 9 and the inner race 8 are fixed together with an adhesive.

A support bolt 10 with a hexagonal hole is inserted into a support bolt insertion hole 18 provided at the center of the axle 2,
The support bolt 10 is screwed into a screw hole provided in the center of the support washer 9, and the inner race 8 is tightened and fixed to the axle 2 by the support bolt 10 via the support washer 9. The male thread 11 is configured to be able to be screwed into the female thread 5 of the mounting bolt insertion hole.

The pair of saddles 1 with the wheels 6 attached as described above are fixed to the ends of the crane girder 19, and the wheels 6 are mounted on the lower flange of the rail 20 fixed to the ceiling of the building via a support member. It is placed. Further, in the figure, reference numeral 21 denotes a driving driven gear integrally provided with some of the wheels 6.

Note that there is a pair of parallel parts 2 in the large diameter part 17 of the support washer 9.
2 or other holding tool engaging part is provided, and when the wheel is attached or removed, the support washer 9 is held by a holding tool such as a spanner engaged with the holding tool engaging part, as necessary,
In this state, the support bolt 10 may be screwed into or unscrewed from the support washer 9.

If it becomes necessary to replace the wheel 6, remove each mounting bolt 4 and support bolt 10 by rotating them in the loosening direction, then rotate the mounting plate 3 by a small angle to insert the mounting bolt insertion hole into the saddle 1. The support bolt 10 is then screwed into the female thread 5 so as to face the web surface. After the tip of the support bolt 10 hits the web of the saddle 1, the support bolt 10
As the screwing in is continued, the mounting plate 3 is moved in the direction away from the web as shown in FIG. 6, so the axle 2 fixed to the mounting plate 3 is removed from the bearing 7 and the wheel 6. be able to.

When installing a new wheel, support bolt 10
from the female thread 5, fit the small diameter shaft portion 15 at the tip of the axle 2 into the inner race 8 of the bearing 7 attached to the new wheel 6, and insert the mounting bolt 4 into the mounting bolt insertion hole to attach the saddle 1. In addition to screwing into the threaded hole in the web, the support bolt 10 may be inserted through the support bolt insertion hole 18 of the axle 2 and threaded into the threaded hole at the center of the support washer 9.

According to this invention, when replacing the wheel 6, each mounting bolt 4 and support bolt 10 are removed, and the support bolt 10 is screwed into the female thread 5 of the mounting bolt insertion hole.
After the tip of the support bolt 10 is brought into contact with the surface of the saddle 1, by further continuing to screw the support bolt 10, the axle 2 can be easily pulled out using the screw action of the support bolt 10, and the axle 2 can be easily pulled out. Support bolt 10 for tightening and fixing the bearing 7 to 2
can be used as a jack bolt for pulling out the axle when replacing the wheel, and the mounting bolt insertion hole having the female thread 5 can be used for screwing the jack bolt, so that the structure for wheel replacement is improved. Effects such as being simple and easy to manufacture can be obtained.

[Brief description of the drawings]

The drawings show an embodiment of this invention,
Figure 1 is a longitudinal sectional front view showing a part of an overhead traveling crane equipped with the wheel attachment/detachment support device of this invention, Figure 2 is an enlarged vertical sectional front view of that part, and Figure 3 is a side view of the wheel attachment/detachment support device. 4 is a side view of the support washer, FIG. 5 is a side view of the mounting plate with an axle, and FIG. 6 is a longitudinal sectional front view showing a state in which the axle is being pulled out for wheel replacement. In the figure, 1 is a saddle, 2 is an axle, 3 is a mounting plate, 4 is a mounting bolt, 5 is a female thread, 6 is a wheel, and 7
is the bearing, 8 is the inner race, 9 is the support washer, 1
0 is a support bolt, 11 is a male thread, 12 is a mounting bolt insertion hole, 14 is a snap spring, 15 is a small diameter shaft portion, 16 is a small diameter portion, 17 is a large diameter portion, 18 is a support bolt insertion hole, 19 is a crane girder, 20 is a rail.

Claims (1)

[Scope of utility model registration request] A mounting plate 3 fixed to the base end of the axle 2 that passes through the saddle 1 is fixed to the saddle 1 by a plurality of mounting bolts 4 that pass through the mounting plate 3 and are screwed into the saddle 1. A female thread 5 with a larger diameter than the mounting bolt 4 is provided in the mounting bolt insertion hole in the mounting plate 3, and a support washer 9 is attached to the inner race 8 of the bearing 7 that is fitted to the tip of the axle 2 and supports the wheel 6. is fixed, a support bolt 10 inserted into the axle 2 is screwed into a support washer 9, and a male thread 11 of the support bolt 10 is configured to be screwed into the female thread 5. Wheel attachment/detachment support device for traveling cranes.