Abstract: The present application relates to a drum brake, which includes a brake arm; a brake shoe; a base; and a brake torque detection device; the brake shoe is hinged on the brake arm through a brake shoe shaft, the brake arm is provided with a shaft hole penetrating through the brake shoe shaft, and the shaft hole is an oblong shaft hole, and a hole wall at one side of the oblong shaft hole is provided with a wear-resistant strip configured for pressing against the brake shoe shaft during braking of the drum brake; the brake torque detection device includes a sensing plate and a tension and compression sensor arranged on the sensing plate; one end of the sensing plate is connected to the brake shoe shaft, and the other end of the sensing plate is connected to the brake arm.

Abstract: The present application relates to a drum brake, which includes a brake arm; a brake shoe; a base; and a brake torque detection device; the brake shoe is hinged on the brake arm through a brake shoe shaft, the brake arm is provided with a shaft hole penetrating through the brake shoe shaft, and the shaft hole is an oblong shaft hole, and a hole wall at one side of the oblong shaft hole is provided with a wear-resistant strip configured for pressing against the brake shoe shaft during braking of the drum brake; the brake torque detection device includes a sensing plate and a tension and compression sensor arranged on the sensing plate; one end of the sensing plate is connected to the brake shoe shaft, and the other end of the sensing plate is connected to the brake arm.

Abstract: A braking torque sensor of a brake is provided, the braking torque sensor includes: a long circular shaft hole arranged on a brake arm of the brake; a connecting plate configured to detect a braking displacement which is generated by the hinge shaft of the brake element in a long circular shaft hole and varies with the magnitude of the friction force when the braking action is performed by the brake, and convert the detected displacement into a plate deformation of the connecting plate; and a tension sensor configured to convert the plate deformation generated due to the braking action on the connecting plate into force information, and transmit the force information outwards in a form of electrical signal or digital signal. The detection result of the braking torque sensor is consistent with the actual result, so that an abnormal condition of the brake can be detected in time.

Abstract: A braking torque sensor of a brake is provided, the braking torque sensor includes: a long circular shaft hole arranged on a brake arm of the brake; a connecting plate configured to detect a braking displacement which is generated by the hinge shaft of the brake element in a long circular shaft hole and varies with the magnitude of the friction force when the braking action is performed by the brake, and convert the detected displacement into a plate deformation of the connecting plate; and a tension sensor configured to convert the plate deformation generated due to the braking action on the connecting plate into force information, and transmit the force information outwards in a form of electrical signal or digital signal. The detection result of the braking torque sensor is consistent with the actual result, so that an abnormal condition of the brake can be detected in time.

Abstract: A disc locking device, comprising: a base, a brake clamping block, a support mechanism, a front baffle, a limiting cover plate, a needle roller slide plate and a brake triggering mechanism, and so on. The base includes a bottom plate and two side vertical plates which are integrally arranged on the bottom plate; the two side vertical plates are oppositely arranged, and the inner walls thereof are all lateral slope surfaces, so that a wedge-shaped groove having a large front opening and a small rear opening is formed between the two laterally-vertical plates; and mounting holes penetratingly connected to the brake triggering mechanism are formed on the side vertical plates. The support mechanism includes a front support mechanism and a rear support mechanism.

Abstract: A disc locking device, comprising: a base, a brake clamping block, a support mechanism, a front baffle, a limiting cover plate, a needle roller slide plate and a brake triggering mechanism, and so on. The base includes a bottom plate and two side vertical plates which are integrally arranged on the bottom plate; the two side vertical plates are oppositely arranged, and the inner walls thereof are all lateral slope surfaces, so that a wedge-shaped groove having a large front opening and a small rear opening is formed between the two laterally-vertical plates; and mounting holes penetratingly connected to the brake triggering mechanism are formed on the side vertical plates. The support mechanism includes a front support mechanism and a rear support mechanism.

Abstract: The present invention is implemented by a gantry binary synchronization block-type brake, which comprises: a gantry bracket comprised by a fixedly connected door-shaped frame; braking arms arranged on both sides of the gantry bracket with lower ends of the braking arms hinged to the gantry bracket; braking shoes connected to the braking arms for frictionally braking a braking wheel; a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously; braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking; and a gap adjustment mechanism for adjusting a working gap between the braking shoes and the braking wheel. According to the present invention, the security risks in an elevator tractor or crane can be eliminated, the gap adjustment approach is simple, and reliability and versatility of an operation are considerably enhanced.

Abstract: An ABS brake control circuit for elevator breaking comprises a brake controller, a backup power supply, a manual rescue instruction circuit, a power grid power-off instruction circuit, a system failure instruction circuit, a signal identification circuit and a brake mode switching circuit. when transport equipments, such as an elevator, an escalator, and so on, encounters a system failure or power grid power-off or needs an emergency rescue, the ABS brake control circuit can allow the transport equipment to transition to a safe brake stop through a previous safe deceleration, thereby eliminating a significant security risk caused by a halt resulted from one-step brake which exists in an elevator brake system, and being capable of ensuring that the manual brake releasing will not cause the phenomena of a stalling of an elevator car and a brake failure of a brake, such that the brake safety of the transport equipments such as an elevator, an escalator, a moving walkway and the like is increased.

Abstract: The present invention is implemented by a gantry binary synchronization block-type brake, which comprises: a gantry bracket comprised by a fixedly connected door-shaped frame; braking arms arranged on both sides of the gantry bracket with lower ends of the braking arms hinged to the gantry bracket; braking shoes connected to the braking arms for frictionally braking a braking wheel; a dual brake releaser secured to the gantry bracket for pushing the two braking arms outward synchronously; braking springs provided on the gantry bracket for pushing the braking arms so as to perform normal-mode braking; and a gap adjustment mechanism for adjusting a working gap between the braking shoes and the braking wheel. According to the present invention, the security risks in an elevator tractor or crane can be eliminated, the gap adjustment approach is simple, and reliability and versatility of an operation are considerably enhanced.

Abstract: An ABS brake control circuit of an elevator brake system comprises a brake controller, a backup power supply, a manual rescue instruction circuit, a power grid power-off instruction circuit, a system failure instruction circuit, a signal identification circuit and a brake mode switching circuit. when transport equipments, such as an elevator, an escalator, and so on, encounters a system failure or power grid power-off or needs an emergency rescue, the ABS brake control circuit can allow the transport equipment to transition to a safe brake stop through a previous safe deceleration, thereby eliminating a significant security risk caused by a halt resulted from one-step brake which exists in an elevator brake system, and being capable of ensuring that the manual brake releasing will not cause the phenomena of a stalling of an elevator car and a brake failure of a brake, such that the brake safety of the transport equipments such as an elevator, an escalator, a moving walkway and the like is increased.