JP3084765B2 - Saddle unit for crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saddle unit for a crane, and more particularly, to a saddle unit for a crane that can be assembled even when a clearance between a wheel and an I-section steel is small and a finger cannot be inserted.

[0002]

2. Description of the Related Art As a conventional saddle unit for a crane, as disclosed in Japanese Patent Application Laid-Open No. 57-121587, no method of assembling when a gap between an I-shaped steel and a wheel is small has been considered.

[0003]

In the above prior art, no consideration is given to an assembling method in the case where the distance between the wheel and the I-section steel is small and a finger cannot enter, and the problem that the size of the applicable I-section steel decreases. there were. It is an object of the present invention to be able to assemble without inserting a finger between the wheel and the I-beam.

[0004]

In order to achieve the above object, the wheel stopper has an outer diameter slightly smaller than the inner diameter of the wheel to minimize play, a screw hole is provided at the center, and the width is smaller than the groove width of the axle. Make it smaller, install it between the bearing and the C ring for holes in the state of the wheel assembly, fit it so that it does not rotate in the groove of the axle when erection, and hold down the inner ring of the bearing with bolts that penetrate the axle A saddle unit for a crane characterized in that the saddle unit does not come off from the axle.

[0005]

The outer diameter of the wheel stopper is only slightly smaller than the inner diameter of the wheel, so that the center can be aligned by the play between the chamfer at the tip of the bolt and the axle hole. When the wheel stopper is fitted in the groove of the axle, the axle is inserted into the groove while rotating the wheel and fitted in the groove. When the axle is not fitted in the groove, it can be confirmed because the axle travels by the depth of the axle groove. When the wheel stopper is fixed with the bolt, the wheel stopper is pressed, but the wheel stopper is received by the flange of the hole C-ring, so that the wheel stopper does not fall off from the wheel inner diameter side.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The suspended crane saddle 1 is mounted on an I-beam 2 of a running tread member attached to the ceiling of a building. Wheels 4A, 4B are provided on the frames 3A, 3B of the suspended crane saddle 1 , and are mounted on the frames 3A, 3B by the axle 7 via the bearing 5 and the C ring 6 for the retaining hole of the bearing 5. It is attached to the hole 8 and is secured by a key plate 9 to prevent it from falling off. Bolts 10 are screwed into central threaded holes 13 of a wheel stopper 12 that penetrates the axle 7 and fits into grooves 11 at the tip of the axle 7 so that the wheels 4A and 4B do not come off from the axle 7. The portion holds the inner ring portion of the bearing 5 so that the wheels 4A and 4B do not move in the thrust direction.
The C-ring 15 for the hole has the wheel stopper 12 and the wheel 4
It is prevented from falling off from the inside of A and 4B. The key plate 9 is fixed to the frames 3A and 3B by bolts S14. Since the outer diameter of the wheel stopper 12 is only about 0.5 mm smaller than the inner diameter of the wheels 4A and 4B, the center can be aligned by the play of the chamfer at the tip of the bolt 10 and the hole of the axle 7. When the wheel stopper 12 is fitted in the groove 11 of the axle 7, the axle 7 is inserted into the groove 11 while rotating the wheels 4A and 4B. When the axle 7 does not fit in the groove 11, the axle 7 travels by the depth of the groove of the axle 7 so that it can be confirmed. Bolt 1
When the wheel stopper 12 is fixed at 0, the wheel stopper 12 is pushed, but the wheel stopper 12 is received by the flange of the C ring 15 for the hole, so that the wheel stopper 12 does not fall off from the wheel inner diameter side. According to the present embodiment, since it is not necessary to press the wheel stopper 12, the wheel 4
Even when the distance between A and 4B and the I-beam 2 is small, assembly is easy, and the range of applicable I-beams is widened, so that the convenience for customers is improved.

As a modification of this embodiment, a step is provided on the wheel in place of the C ring
May be prevented from falling off.

[0008]

According to the present invention, there is no need to insert a finger into the gap between the wheel and the I-beam when mounting the wheel stopper, so that the present invention can be applied to a small I-beam width, and is easy to use for a crane. A saddle unit can be provided.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a wheel portion of a saddle unit for a crane of the present invention.

FIG. 2 is a front view of a wheel.

[Explanation of symbols]

3A, 3B: Frame, 4A, 4B: Wheel, 5: Bearing, 7: Axle, 10: Bolt, 12: Wheel stopper, 15: C ring for hole.

Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B66C 9/08

Claims (1)

(57) [Claims] In a saddle unit for a crane in which a pair of wheels supported by a frame are suspended and run on an inner oblique side of an I-beam, a wheel stopper has an outer diameter slightly smaller than an inner diameter of the wheel. Minimize backlash, provide a screw hole at the center, make the width smaller than the groove width of the axle, and assemble it between the bearing and the hole C ring in the state of the wheel assembly, do not rotate in the axle groove when installing A saddle unit for a crane, characterized in that the wheels are prevented from slipping off the axle by holding the inner ring of the bearing with bolts penetrating the axle so as to be fitted.