Braking device

Abstract

The invention provides a braking device. According to the braking device, a gap between a brake drum and a brake shoe can be easily and rapidly adjusted to proper size, and the brake shoe can apply braking friction force properly. The braking device is provided with a fixed iron core (9), a movable iron core (8), the brake shoe (2), an adjusting bolt (5), a split nut (6) and a screwing bolt (7), wherein the fixed iron core (9) and the movable iron core (8) are arranged at the radial outer side of the brake drum (1); the brake shoe (2) applies the braking friction force on a peripheral surface (1a) of the brake drum (1); the adjusting bolt (5) is clamped between the movable iron core (8) and the brake shoe (2) and is used for adjusting a gap with a non-braking state between the peripheral surface (1a) and the brake shoe (2); the split nut (6) enables an adjustment screw hole (61) for screwing the adjusting bolt (5) to be reduced by a gap (62) and is arranged at the side of the movable iron core (8); the screwing bolt (7) is screwed to close the gap (62), enables the adjustment screw hole (61) to be reduced and stops the adjusting bolt (5) from screwing forwards and screwing backwards.

Description

technical field [0001] The invention relates to braking devices. Background technique [0002] A conventional brake device includes a fixed iron core and a movable iron core arranged radially inward of the brake drum, brake shoes that abut against the inner peripheral surface of the brake drum to apply braking friction, and sandwiched between A plurality of adjusting screw parts between the movable iron core and the brake shoe, a first hexagon nut used to fix the adjusting screw part to the movable iron core, and a screw used to fix the adjusting screw part to the brake shoe 2nd hex nut. [0003] And, in order to adjust the gap between the brake drum and the brake shoe in the non-braking state (the gap between the movable iron core and the fixed iron core in the braking state), loosen a plurality of hexagonal nuts with a wrench, and then use a wrench to tighten a plurality of hex nuts. The adjustment screw is screwed in and out to adjust the gap (for example, refer to Pate...

AI Technical Summary

Problems solved by technology

[0005] However, the space on the inner side of the brake drum is narrow, and tools such as a wrench can only be moved at a small swing angle, and there is a problem that it takes a lot of time and effort to loosen the many hexagon nuts.

In addition, it is difficult to adjust the clearance to be uniform by screwing in and out of a plurality of adjusting screws, and there is a problem that the brake shoe does not contact the brake drum in an appropriate posture and uneven wear occurs.

In addition, when tightening a plurality of hexagonal nuts after adjustment, the adjustment screw may rotate along with the adjustment deviation, and there is also a problem that skilled workers are required.

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