JPH0540061Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a grinding wheel suspension fitting for suspending the grinding wheel when the grinding wheel is attached to and removed from the grinding wheel shaft of a grinding machine.

[Prior art] In the conventional technology, the grinding wheel hanging fitting for hanging the grinding wheel when it is attached to and detached from the grinding wheel shaft of the grinding machine is For example, a single annular support (see Utility Model Application Publication No. 58-99275) or a single C-shaped support that is adapted to engage with the outer peripheral surface of the grinding wheel sleeve or tightening flange is fixed at the tip. There is a hook-shaped support rod with a hanging hole drilled at the base end to which a rope such as a crane or chain block can be hung. When the grinding wheel is attached to and removed from the grinding wheel shaft, a support metal is fitted to the outer peripheral surface of the grinding wheel sleeve or the tightening flange to support the grinding wheel.

In addition, if the grinding wheel sleeve or the tightening flange is formed with a circular recess and a hollow shaft-like fitting part inside the circular recess, the support metal is attached to the grinding wheel sleeve or the tightening flange as described in Japanese Utility Model Publication No. 57-57901. There are some types that are designed to engage with the inner circumferential surface of the circular recess of the tightening flange. The supporting metal is engaged with the surface.

[Problems to be solved by the invention] A single annular support in which the support metal is adapted to engage with the outer circumferential surface of the grinding wheel sleeve or the tightening flange in the grinding wheel hanging fixture of the grinding machine in the above-mentioned prior art. With gold or single C-shaped supports, the support engages the outer circumferential surface of the grinding wheel sleeve or clamping flange, so the support point is outside the side of the grinding wheel.
The center of gravity is not supported and the support is unstable.

The annular support requires movement in the axial direction to fit into the grinding wheel sleeve or tightening flange, making it difficult to operate.Since the annular support has a larger inner diameter than the grinding wheel sleeve or tightening flange, it is also larger and heavier. growing.

The C-shaped support is easier to operate than the annular support because the notch passes through the grinding wheel sleeve or clamping flange from the side, but since the notch is larger than the grinding wheel sleeve or clamping flange, the overall It is even larger and weighs even more than the support metal.

When the grinding wheel sleeve or tightening flange has a circular recess and a hollow shaft-shaped fitting part inside the circular recess, the support metal that engages with the upper part of the inner peripheral surface of the circular recess has a support point inside the side surface of the grinding wheel. Therefore, the center of gravity is supported and the support is stable, but since it is a substantially annular body, it is difficult to operate as it requires movement in the axial direction to fit into the circular recess, and the size is equivalent to the diameter of the circular recess. It becomes the weight.

This invention enables the grindstone hanging fitting to engage with the hollow shaft-like fitting part in the circular recess of the grindstone sleeve or tightening flange, thereby reducing its size and weight, and making it easy to engage and disengage. The purpose is to make it easier.

[Means for Solving the Problems] The grindstone hanging fixture according to this invention includes a first plate member in which an inverted U-shaped notch with a downward opening into which the tightening tool tip and C washer can be inserted, and a grindstone sleeve. a second plate member formed with an upwardly opening U-shaped notch that can be engaged with the annular groove of the hollow shaft-like fitting part;
It is composed of a connecting plate part and a hook-shaped support rod having a hanging hole bored at the base end to which a rope such as a crane or chain block can be hung, and the U-shaped notch of the second plate member is engaged with the annular groove. The first plate member and the second plate member are connected at both sides by connecting plate portions so that the first plate member is located in front of the tip of the hollow shaft-like fitting portion in the fitted state, forming a frame shape. , the tip of the hook-shaped support rod is fixed to the upper outer surface of the first plate member.

[Function] When replacing the grinding wheel with respect to the grinding wheel shaft,
The second part of the grinding wheel hanging fitting is attached to the protruding shaft-like part of the grinding wheel sleeve.
The U-shaped notch of the plate member is fitted from below to support the grinding wheel.

When removing the grinding wheel from the grinding wheel shaft, operate a crane or the like with which the grinding wheel suspension fitting is attached to a rope, move the hook-shaped support rod, and move the U-shaped notch of the second plate member into the shape of the protruding shaft of the grinding wheel sleeve. the hook-shaped support rod is raised to fit the U-shaped notch into the protruding shaft-shaped portion. Then, by inserting a box spanner or the like through the inverted U-shaped notch of the first plate member and loosening the fastening nut at the tip of the grinding wheel shaft, the grinding wheel becomes ready to be removed from the grinding wheel shaft. The grinding wheel is
When the protruding shaft portion of the grinding wheel sleeve is supported by the U-shaped notch of the second plate member, and the hook-shaped support rod is moved in the direction to pull out the grinding wheel from the grinding wheel shaft, the grinding wheel hanging bracket and the grinding wheel sleeve are moved. That is, the grinding wheel moves as one unit, and the grinding wheel is completely detached from the grinding wheel shaft and transported to a desired grinding wheel replacement location by operation of a crane or the like.

At the grinding wheel replacement location, remove the protruding shaft portion of the grinding wheel sleeve from the U-shaped notch of the second member, and insert the new balanced and adjusted grinding wheel into the second plate member, i.e., the grinding wheel, in the same manner as the previous grinding wheel. Attach it to the hanging fixture, operate the crane, etc., move the hook-shaped support rod, and fit the grindstone sleeve onto the grindstone shaft in the reverse order of the removal operation. Then, in this state, pass the box spanner through the inverted U-shaped notch in the first plate member and tighten the fastening nut. The grindstone sleeve is fixed to the grindstone shaft.

Thereafter, the box spanner is removed and the hook-shaped support rod is lowered by operating a crane or the like, and the U-shaped notch of the second plate member is completely separated from the protruding shaft portion. Then, by operating a crane or the like, the hook-shaped support rod, that is, the grindstone hanging metal fitting, is moved to an appropriate location.

[Example] An embodiment of this invention will be described with reference to the drawings.

In FIGS. 1 and 3, first, the tip of a grinding wheel shaft 2 rotatably supported on a grinding wheel head 1 of a grinding machine on which a grinding wheel is attached/detached using a grinding wheel suspension fitting is connected to a grinding wheel mounting part. The tapered portion 3 is formed to
Further, a threaded portion 4 is formed at the tip thereof.

The grinding wheel 5 includes a grinding wheel sleeve 6 and a tightening flange 7.
and are clamped and held by the two by being tightened with bolts 8. The grinding wheel sleeve 6 has a circular recess 9 on the side opposite to the grinding wheel head, and a hollow shaft-shaped fitting part 10 at the center of the circular recess 9, each coaxial with the grinding wheel 5. The hollow shaft-shaped fitting part 10 has a flange part 11 on the intermediate outer circumferential surface, and a guide U-shaped groove 13 for accommodating the C washer 12 on the inner circumferential surface of the distal end part which is open at the bottom.
are formed respectively. Note that a grindstone balance device 14 is provided on the bottom surface of the circular recess 9. The inner surface 15 of the flange portion 11 is an inclined surface.

The center hole of the grindstone sleeve 6 is a tapered hole 16 that fits into the taper part 3 of the grindstone shaft 2 on the grindstone head side, and an insertion hole for a tightening bag nut 17 that is screwed into the threaded part 4 of the grindstone shaft 2 on the opposite side. It is 18.

The tightening bag nut 17 has a hexagonal head 19 and an annular groove 20 formed therein.

When the grinding wheel 5 is attached to the grinding wheel shaft 2, the taper hole 16 of the grinding wheel sleeve 6 is fitted into the tapered portion 3 of the grinding wheel shaft 2, and the C washer 12 is inserted into the U-shaped guide groove of the hollow shaft-like fitting portion 10. 13 and the threaded portion 4 of the grindstone shaft 2
It is fitted from below into an annular groove 20 of a tightening bag nut 17 that is screwed into the nut. A small protrusion that fits into the insertion hole 18 when installed is formed on the side surface of the C washer 12. In this way, the tightening bag nut 17 tightens the grindstone sleeve 6 to the tapered portion 3 of the grindstone shaft 2 via the C washer 12.

A grindstone hanging fitting for suspending the grindstone 5 when the grindstone 5 is attached to and removed from the grindstone shaft of a grinding machine has the following structure.

The inverted U-shaped plate part 22 in which the inverted U-shaped cutout part 21 is formed and the U-shaped plate part 24 in which the U-shaped cutout part 23 is formed are formed with a slight difference in level, and both legs of each of them form a connecting plate part. 25, 25 are connected to form a frame shape. Then, the tip of a hook-shaped support rod 26 made of a plate material is placed on the upper outer surface of the inverted U-shaped plate 22, and the abutment part 2 is placed on the lower outer surface of the U-shaped plate 24.
7 are fixed respectively. The inner surface of the U-shaped plate portion 24 has a flange portion 11 along the inner peripheral edge.
5, the inclined surface portion 28
is formed.

At the base end of the hook-shaped support rod 26 is a hanging hole 29 on which a rope from a crane or chain block can be hung.
is drilled, and the position of the hanging hole 29 is directly above the center of gravity so that the axis of the grinding wheel 5 is horizontal when the grinding wheel 5 is suspended.

The operation and operation of attaching and detaching the grinding wheel to the grinding wheel shaft using the above-mentioned grinding wheel hanging fixture will be described.

Assume that the grinding wheel 5 is attached to the grinding wheel shaft 2 as described above, and in order to remove the grinding wheel 5, first operate a crane or the like to remove the hook-shaped support rod 2.
1 and remove the U-shaped notch 23 of the U-shaped plate portion 24.
is positioned directly below the hollow shaft-like fitting part 10, and the abutting part 27 comes into contact with the bottom surface of the circular recess 9, so that the grindstone hanging fixture is placed in a slightly inclined position (see FIG. 2).

Then, when the hook-shaped support rod 21 is raised as it is, the inclined surface portion 28 of the inner surface of the U-shaped plate portion 24 is aligned with the inner surface 1 of the flange portion 11 of the hollow shaft-shaped fitting portion 10.
5, the outer surfaces of the abutment portions 27 are brought into contact with the bottom surfaces of the circular recesses 9, respectively, and the hollow shaft-like fitting portions 10
fits into the U-shaped notch 23 of the U-shaped plate portion 24.

Therefore, the box spanner was inserted into the inverted U-shaped plate part 22.
Tightening bag nut 17 through the inverted U-shaped notch 21 of
When the tightening bag nut 17 is loosened slightly, the tightening bag nut 17 is removed from the C washer 12.
The protrusion 17a of is released. Then, the small protrusion of the C washer 12 is removed from the insertion hole 18, and the C washer 12 is pulled out downward. When the box spanner is removed, the grinding wheel sleeve 6, ie, the grinding wheel 5, is in a state where it can be detached from the grinding wheel shaft 2.

In this state, when a crane or the like is operated to move the hook-shaped support rod 21 and move the grindstone sleeve 6 in the direction of pulling it out from the taper part 3 of the grindstone shaft 2, the U-shaped plate part 24, that is, the grindstone hanging metal The grinding wheel sleeve 6, that is, the grinding wheel 5 move together, and the grinding wheel 5 is completely separated from the grinding wheel shaft 2 and transported to a desired grinding wheel replacement location by operation of a crane or the like. At this time, the inclined surface portion 28 of the inner surface of the U-shaped plate portion 24 is aligned with the inner surface 1 of the flange portion 11 of the hollow shaft-shaped fitting portion 10.
5, since the outer surfaces of the abutment portions 27 are in contact with the bottom surfaces of the circular recesses 9, and the hollow shaft-like fitting portions 10 are fitted into the U-shaped notches 23 of the U-shaped plate portions 24, The grinding wheel sleeve 6, that is, the grinding wheel 5 has a U-shaped plate portion 24,
That is, there is no risk of it moving relative to the grindstone hanging fixture or falling off there.

At the grinding wheel exchange place, the hollow shaft-shaped fitting part 10
from the U-shaped notch 23 of the U-shaped plate 24,
In the same way as the previous grinding wheel 5, attach the new grinding wheel 5' whose balance has been adjusted to the U-shaped plate part 24, that is, the grinding wheel hanging bracket, and operate the crane or the like to attach the hook-shaped support rod 2.
1, and fit the tapered hole 16 of the grindstone sleeve 6 into the tapered portion 3 of the grindstone shaft 2 in the opposite direction to the removal operation.
Then, attach the C washer 12 to the hollow shaft-like fitting part 10.
Fit the box spanner into the U-shaped guide groove 13 and the annular groove 20 of the tightening bag nut 17 from below, engage the small protrusion of the C washer 12 with the insertion hole 18, and in this state insert the box spanner into the leg U-shape. Inverted U-shaped notch 2 of plate portion 22
1 through the hexagonal head 19 of the tightening bag nut 17, and tighten the tightening bag nut 17. Tightening bag nut 1
The grindstone sleeve 6 is fixed to the tapered portion 3 of the grindstone shaft 2 via the annular groove 20 of No. 7, the C washer 12, and the guide U-shaped groove 13.

Thereafter, the box spanner is removed, the hook-shaped support rod 21 is lowered by operating a crane, etc., and the U-shaped notch surface of the U-shaped plate part 24
completely remove it from. Then, by operating a crane or the like, the hook-shaped support rod 21, that is, the grindstone hanging metal fitting, is moved to an appropriate location.

[Effects of the invention] According to the grindstone hanging fixture of this invention, it is possible to support the hollow shaft-shaped fitting part inside the circular recess, which can stably support the center of gravity. Only the second plate member in which the upwardly opening U-shaped notch is formed engages with the fitting portion, and it is easy to engage and disengage the outer circumferential surface of the hollow shaft-shaped fitting portion. In addition, since the small-diameter hollow shaft-like fitting part is supported by the second plate member, and the first plate member, second plate member, and connecting plate part are connected in the form of a frame, the grindstone hanging fixture can be made smaller. - Can be made lighter.

The first plate member is positioned outside the hollow shaft-like fitting part in the supported state, and is formed with an inverted U-shaped notch with a downward opening, so that engagement and disengagement operations can be performed easily. The ease of
Moreover, since the hook-shaped support rod is fixed to the top,
The insertion of the C washer into the tightening tool tip, the grindstone sleeve, or the tightening flange, that is, the loosening and tightening operation of the tightening nut and the attachment/detachment operation of the C washer are not hindered.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional side view of the grinding wheel suspension fitting for attaching and detaching the grinding wheel in an embodiment of this invention, and Fig. 2 is a sectional side view of the grinding wheel hanging fitting for attaching and detaching the grinding wheel in the embodiment of this invention. FIG. 3 is a cross-sectional side view of the wheel hanging before and after the wheel is suspended. FIG. 3 is a front view of the grinding wheel suspension fitting when the grinding wheel is attached and detached in the embodiment of this invention. 1... Grinding wheel head, 2... Grinding wheel shaft, 3... Taper part, 4... Threaded part, 5... Grinding wheel, 6... Grinding wheel sleeve, 7... Tightening flange, 8... Bolt, 9
...Circular recess, 10...Hollow shaft-shaped fitting part, 11...
...Flange part, 12... C washer, 13... Guide U-shaped groove, 14... Grinding wheel balance device, 15...
Inner surface of flange portion, 16...Tapered hole, 17...
...Tightening bag nut, 17a... Protrusion, 18... Insertion hole, 19... Hexagonal head, 20... Annular groove, 21
...Inverted U-shaped notch, 22... Inverted U-shaped plate, 2
3... U-shaped notch, 24... U-shaped plate, 25
. . . Connecting plate portion, 24 . . . Hook-shaped support rod, 27 .

Claims (1)

[Scope of utility model registration request] A first plate member formed with an inverted U-shaped notch with a downward opening through which the tightening tool tip and C washer can be inserted, and a U with an upward opening that can be engaged with the annular groove of the hollow shaft-shaped fitting part of the grindstone sleeve. The second plate member is composed of a second plate member in which a letter-shaped notch is formed, a connecting plate part, and a hook-shaped support rod having a hanging hole at the base end for hanging a rope such as a crane or chain block. The first plate member and the second plate member are arranged on both sides so that the first plate member is located in front of the tip of the hollow shaft-shaped fitting portion when the U-shaped notch of the plate member is engaged with the annular groove. A grindstone hanging fixture that is connected at the connecting plate portion to form a frame shape, and has a hook-shaped support rod whose tip is fixed to an upper outer surface of the first plate member.