JPH0210347Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite brake shoe that is connected to a brake cylinder of a railway vehicle to brake wheels.

Generally, a composite brake shoe is held by a brake shoe head that is connected directly or indirectly to a brake cylinder, and this state is shown in FIG.

In FIG. 1, reference numeral 1 denotes a composite brake shoe, and this composite brake shoe 1 is made by integrally molding a resin base material 3 on the inner surface of an arcuate base plate 2.

The resin base material 3 is made of resin and synthetic rubber, mixed with cast iron powder, metal oxide, graphite, etc., and then heated and molded.

The base plate 2 has an arcuate shape as shown in detail in FIGS. 2 to 5, and a mounting plate 4 for connection is provided at the center of its outer circumferential surface. (In the vertical direction in FIGS. 2 and 3) Stop plates 5 for steady rests are provided on both sides, respectively.
The mounting plate 4 has a plurality of legs 4a that penetrate straight from the outer surface to the inner surface of the base plate 2 and protrude, and the leg portions 4a that protrude from the inner surface are welded 4b.
It is fixed to the base plate 2 by. Similarly, the stop plate 5 has a plurality of legs 5a that penetrate straight from the outer surface to the inner surface of the base plate 2 and protrude, and these leg parts 5a are fixed to the base plate 2 by welding 5b. .

In addition, in FIGS. 2 and 3, 2a is the base plate 2.
This is a hole provided at an arbitrary location for degassing during molding of the resin base material 3, and a protrusion 2b is formed around the inside of the base plate 2 around the hole 2a. Moreover, the claws 2c are formed by digging out an arbitrary part of the base plate 2 inward.

An adhesive is applied to the inner surface of the base plate 2 having this structure, and a resin base material 3 having the above components is integrally molded to form the composite brake shoe 1.

Then, this composite brake shoe 1 is attached to the brake shoe head 10 (see Figure 1), and the installation is done by inserting the mounting plate 4 of the base plate 2 into the mounting hole 11 at the center inside of the brake shoe head 10. At the same time as fitting the brake pad head 10
This is accomplished by fitting the retaining plates 5 of the base plate 2 into the retaining holes 13 on both inner surfaces of the base plate 2, and inserting the stopper pins 12 into the mounting plate 4. The brake shoe head 10 is connected by a pin 14 to a push rod 15 and a brake shoe suspension (not shown). Further, the push rod 15 is directly or indirectly connected to a brake cylinder (not shown).

Although the conventional synthetic brake shoes are as described above, there is a problem in that the resin base material 3 peels off from the base plate 2.

That is, the resin base material 3 is integrally molded on the base plate 2, and the resin base material 3 is held on the base plate 2 by the adhesive applied to the inner surface of the base plate 2, the mounting plate 4, and the stop plate 5.
However, the adhesive deteriorates due to brake heat caused by sliding between the resin base material 3 and the wheel tread, and the railway vehicle The resin base material 3 separates from the base plate 2 due to vertical and horizontal vibrations.

However, since the synthetic brake shoes brake the wheels by bringing the resin base material 3 into contact with the wheel tread, brake heat is inevitably generated, and since the railway vehicle runs on uneven tracks, , that vibration cannot be eliminated.

Therefore, the technical problem of the present invention is to prevent the resin base material 3 from peeling off from the base plate 2 by changing the holding means that protrudes inside the base plate 2.

The technical means of the present invention to solve this technical problem is that, in the above-mentioned conventional synthetic brake shoe, a plurality of legs of either or both of the mounting plate and the stop plate are attached to the inner surface of the base plate so as to face each other or move away from each other. This is because it was bent into an inclined shape.

According to this technical means, the legs of the mounting plate and/or the stop plate, which are bent in an inclined manner in opposite directions, can be bent in a direction parallel to the inner surface of the base plate and in a direction perpendicular to the inner surface of the base plate, respectively. Since it has the function of hooking the resin base material against the adhesive, the resin base material does not peel off from the base plate due to deterioration of the adhesive due to brake heat or vehicle vibration, that is, the above technical problem has been solved.

According to the present invention having the above technical means, the following unique effects can be obtained.

As another technical means for solving the above technical problem, it is conceivable to further lengthen the protruding lengths of the respective legs 4a, 5a of the mounting plate 4 and stop plate 5 in the prior art. In this case, the resin base material 3 in the direction parallel to the inner surface of the base plate 2
Although it is effective against peeling of the resin base material 3 in the direction perpendicular to the inner surface of the base plate 2, it cannot be used as a countermeasure against the peeling of the resin base material 3 in the direction perpendicular to the inner surface of the base plate 2.
The longer the protruding length is, the shorter the usage limit due to wear of the resin base material 3 becomes.

In addition, as another technical means to solve the above technical problem, it is possible to weld other projections such as an arch shape to the inner surface of the base plate 2 and integrally mold the resin base material 3 thereto. If this method is used, other protrusions such as arch-shaped protrusions are separately manufactured and welded, which increases the manufacturing process, and the increase in the number of welded parts causes a decrease in the strength of the base plate 2 and an error in the curvature of the base plate 2.

Compared to these other means, in the case of the present invention, the plurality of legs of the conventional mounting plate and/or stopper plate are simply bent in opposite directions, so that It is possible to prevent the resin base material from peeling off in the direction perpendicular to the inner surface of the base plate, and there is no increase in the manufacturing process due to the production and welding of other protrusions. There will be no confusion.

An embodiment of the present invention will be described below with reference to FIGS. 6 to 9.

In the case of this embodiment, the difference from the conventional one is that the plurality of legs 4a and 5a of the mounting plate 4 and the stop plate 5 are separated from each other by the base plate 2.
This is because the welds 4b and 5b were performed after the welding was performed after bending the welding member at an angle of approximately 45 degrees to the outside in the width direction, and other than that, the explanation thereof will be omitted as it is the same as the conventional method.

The bending angle of the legs 4a, 5a of the mounting plate 4 and stop plate 5 is approximately 45 degrees, but if this bending angle is small, it may cause the mounting plate 4 and stop plate 5 to wobble. On the other hand, if the resin base material 3 is too large, the resin base material 3
The grip becomes worse.

In the above embodiment, the plurality of leg portions 4a and 5a of the mounting plate 4 and the stop plate 5 are respectively bent outward in the width direction of the base plate 2 so as to separate from each other. As shown by the dashed lines in FIGS. 8 and 9, the plurality of legs 4a, 5a may be bent inward in the width direction of the base plate 2 so as to face each other, and by this bending, the legs If the parts 4a and 5a can be firmly fixed to the base plate 2, welding may not be necessary.

Further, in the above embodiment, the plurality of leg portions 4a, 5a of each of the mounting plate 4 and the stop plate 5 are arranged in the width direction of the base plate 2 (left and right direction in Fig. 7). The legs 4a, 5a may be arranged in the longitudinal direction of the base plate 2 (in the vertical direction in FIG. 7). You can also rotate it a few degrees.

Further, in the above embodiment, the number of stop plates 5 is two, but this is only because two are often actually used, and the number is not limited.

Further, in the above embodiment, both the legs 4a and 5a of the mounting plate 4 and the stop plate 5 are bent.
Either the leg portion 4a or 5a of the mounting plate 4 or the stop plate 5 may be bent.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the synthetic brake shoe attached to the brake shoe head, Figure 2 is a side view of the base plate of a conventional composite brake shoe, Figure 3 is an external view of the same, and Figure 4 is Figure 3A.
-A sectional view, Figure 5 is the 3rd B-B sectional view, 6th
The figure is a side view of the base plate in one embodiment of the present invention, FIG. 7 is an external view of the same, FIG. 8 is a sectional view taken along line C-C in FIG.
FIG. 9 is a sectional view taken along the line DD in FIG. 7. 1... Synthetic brake shoe, 2... Base plate, 3... Resin base material, 4... Mounting plate, 5... Stop plate, 4a, 5a
……leg.

Claims (1)

[Claims for Utility Model Registration] An arc-shaped base plate, and a mounting plate that is fixed to the center of the outer peripheral surface of the base plate and has a plurality of legs protruding from the inside of the base plate, and that is engaged with a brake shoe head. a stop plate whose plurality of legs protrude inside the base plate and are fixed to the outer peripheral surface of the base plate remote from the fixed position of the mounting plate and engaged with the brake shoe head; and a stop plate that is attached to the inner surface of the base plate. A composite brake shoe consisting of a resin base material that is integrally molded with the legs of a plate and a stop plate and slides on the wheel tread, wherein a plurality of legs of either or both of the mounting plate and the stop plate are opposed to each other or separated from each other. A synthetic brake shoe bent at an angle to the inner surface of the base plate.