JPS616438A - Brake plate - Google Patents

Abstract

PURPOSE:To improve heat-resisting characteristic by fixing each one end of metallic wires to a base plate, releasing the other ends thereof to be brush-like, and filling spaces among the brush-like wires with synthetic resin. CONSTITUTION:A brake plate 3 fixed to a shaft 2 of a driver 1 comprises a base plate 4 where each one end of metallic wires 5 is planted, wherein the other ends of the metallic wires are brush-like. Heat-resisting synthetic resin 6 is filled up in spaces among the metallic wires 5. The metallic wire may be preferably a soft steel wire, a hard steel wire, or the like and the synthetic resin may be preferably phenol resin, melamine or polynoid. In this arrangement, heat generated at the time of braking is dispersed through the metallic wires having good thermal conductivity to heighten heat-resisting characteristic as a brake plate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a brake plate used for reducing the speed or stopping moving parts of a machine.

[11, Previous technology] Conventional brakes have one wheel made of cast iron or cast steel, #R iron, steel strip, mild steel, wrought iron, brass, bronze, wood,
Brake pieces made of asbestos fabric, asbestos paste, fiber, leather, etc. are brought into contact, and braking force is generated according to the contact force.

[Problem that the invention seeks to solve]

Conventional brake wheels are made of cast iron or steel and have a large inertia force, so it takes a lot of energy to brake the moving parts of the machine, and it is difficult to achieve a sharp braking effect of 1q. could not. In addition, the coefficient of friction μ between the brake wheel and the brake piece depends on the friction between the two, the condition of the contact surface (degree of slippage, type of lubricating oil, dry/wet condition, or degree of surface finish), and relative slippage. Although it changes depending on speed, pressure on contact surfaces, etc., the conventional coefficient of friction does not change constantly due to changes in the environment, which poses a problem when automatically controlling braking. there were.

Recently, there are synthetic resins that have strong mechanical strength and are lightweight.
When using synthetic resin as a brake plate, a common drawback of many synthetic resins is that they have poor heat conduction, and when used as a brake, heat accumulates on the friction surface, causing the brake to deteriorate. There were some areas that could not be fully utilized as materials. In addition, synthetic resin mixed with asbestos is often used, but there is also the problem that asbestos causes pollution due to wear and tear.

[Means to solve the problem]

In view of the above points, the present invention is intended to be used for either one or both of a brake plate and a brake piece, and is made of a ferrous alloy such as a mild steel wire or a hard steel wire cut into a predetermined length. line,
Alternatively, one end of a metal wire such as a phosphor bronze wire is planted or fixed on a base plate such as a disc or a square plate, and the other end is made into a brush shape by arranging it in an appropriate state such as uniformly. By filling synthetic resin between metal wires, the content of metal wires can be reduced to 1 by volume.
The content is 5% to 60%, preferably 25% to 35%, to constitute a brake disc or a brake piece. The tip of this brush-like metal wire should be flattened.
i When finished, the binding material is evenly distributed between the synthetic resin,
In the middle, the wires are curved, meandered, several metal wires are tied together, or woven into a basket shape as shown in ↑9. The present invention eliminates the occurrence of pollution without using asbestos in combination with synthetic resin.

[Effect]

Brake plates made of metal wires planted or fixed on plywood and synthetic resin filled between them are extremely lightweight and strong. Braking can be achieved based on a stable friction coefficient due to the resin surface. The heat generated in the wm plane can then be dissipated out of the brake plate through the metal wire to the base plate.

〔Example〕

The present invention will be explained based on the drawings that illustrate the invention.

In FIG. 1, the brake plate 3 fixed to the shaft 2 of the drive body 1
The structure is such that one end of a metal wire 5 such as a mild steel wire, hard steel wire, phosphor bronze wire, brass wire, etc. is planted on the base plate 4, and the other end is aligned and cut to form a brush shape. -ru. In this case, the metal wire is not only made straight, but also curved or meandered in the middle. Between the metal wires 5, phenolic resin, melamine, polynoid, silicone, polyphenylene oxide (PPO), polyoxymethylene (
It is filled with a heat-resistant synthetic resin 6 such as POM) or DΔP. 7 is a brake piece.

The size shown in Fig. 2 (a) is a stranded wire 8 made by combining a plurality of metal wires 5, and the size shown in Fig. 2 (b) is the one shown in Fig. 2 (
a), with a cavity 9 in the center.Although not shown in this figure, it is possible to weave the metal wires 5 in a basket shape in any case. As shown in FIG. 2(b), the end faces of the wires 5 are arranged so that they are distributed evenly between the synthetic resins.

Now, the diameter dimension of brake plate 3 is DI111 and the pressing force is P.
ks, the torque is ksf-m, and the friction coefficient is μ, then the soft steel wire with a diameter of 1 mm or less (JIS: SWRM 6
~22), a metal wire 5 having a culm of 25 to 30% by volume is planted on the base plate, and the remaining 70 to 75% space is filled with a resin 6 whose main component is phenolic resin. Filled with L
l! , :1 - Relative sliding speed to key plate 3 -50K
The experimental results when the brake piece 7 made of m/l-1r, 845C is pressed and 1=fl, :J will be explained with reference to FIG. The horizontal axis in Figure 3 is 9/C112 for push force 1 to 5.
, the vertical axis is the friction coefficient 0.1~0.5 and the braking torque 1~
5 shows 9m. Synthetic resin play 1 without metal wire (When a piece of steel made of material 545C is pressed against fj, the braking force 1 ~ ruku generated by the pressing force) is as follows:
As shown in diagram 10, the friction coefficient changes in a quadratic curve, and the friction coefficient also changes in a quadratic curve, as shown in diagram 11. On the other hand, the braking torque generated when a piece of steel made of material 545C is pressed against the brake plate 3 of the present invention changes approximately linearly as shown in diagram 12, and the friction coefficient curve As shown by 13, it shows a substantially constant value and does not change.This is extremely humane because it means that it is easy to automatically control the braking operation.

Also, the change in braking torque when water is added between the brake plate 3 and the steel piece of 3'45C is shown in diagram 1.
4, although it is slightly inferior compared to diagram 12,
The rate of change has hardly changed.

Similarly, as shown in diagram 15, the change in the thick friction coefficient is slightly decreased compared to diagram 13, but remains a substantially constant value. This means that braking work in a dry atmosphere and braking work in a humid atmosphere can be automatically controlled by adding a constant coefficient of 11. This is also extremely important.

Next, the experimental results for wear m are as follows: pressing force 1 kz f
So, when we compare the wear M of the brake plate when the brake is applied intermittently and the length of the brake application reaches 11 (■), the conventional brake plate wears 5.04n+n+
3, whereas the amount of wear of the brake plate 3 of the present invention was 0.34 mm 3 . Then material 8
The wear m of the brake piece made of 45G steel is 0.1 mm3 for a conventional brake, whereas the wear m for the brake plate of the present invention is 0.09 mm3 for a conventional brake.
It was mm3.

〔Effect of the invention〕

The brake plate is made of brush-like metal wires with synthetic resin filled between them, making them lightweight, strong, and highly wear-resistant. The heat generated during braking is dissipated through metal wires with good thermal conductivity.Tau' is used as a brake plate, and -C has high heat resistance properties. Even higher l? Not only does it have a porosity coefficient, but its #'friction coefficient remains stable even in dry or humid environments with only a slight change at a constant rate, which means that the brake plate itself is lightweight. This also has the effect of facilitating automatic control of braking work.

[Brief explanation of drawings]

FIG. 1 is a side view of the present invention, FIG. 2(a) is an embodiment of the present invention, and FIG. The figure shows a view seen from the same direction. FIG. 3 is a diagram of experimental results of the present invention. 3...Brake plate 4...Bed plate j)...Metal wire 6...Synthetic resin 8 ......Twisted metal wire patent application Inoue Japax Co., Ltd. Research passed away 1st time

Claims (4)

[Claims] (1) A brake plate characterized in that one end of a metal wire is fixed to a base plate, the other end is opened to form a brush shape, and a synthetic resin is filled between the brush-like metal wires. (2) The brake plate according to claim 1, wherein the metal wire is a meandering or curved metal wire. (3) The brake plate according to claim 1, wherein the metal wire is made of a plurality of metal wires twisted together. (4) The brake plate according to claim 1, wherein a plurality of the metal wires are woven into a basket shape.