Elevator safety brake
A technology of safety brakes and brakes, which is applied in the direction of brake actuators, gear transmission mechanisms, hoisting devices, etc., can solve the problem that the iron core is easily stuck on the guide device during the opening or closing process, and achieves simple structure and stable stability , the effect of easy installation
Pending Publication Date: 2021-06-22
深圳市质量安全检验检测研究院
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- Application Information
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Problems solved by technology
[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the moving iron core of the elevator brake in the prior art is easily stuck on the guide device during the opening or closing process, thereby providing an elevator safety brake with improved structure.
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[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention discloses an elevator safety brake. The elevator safety brake comprises a support; a permanent magnet connected to the support and internally provided with a suspension space; a movable iron core suspended in the suspension space under the action of the magnetic field of the permanent magnet, wherein a brake shoe is connected to the movable iron core, and the brake shoe moves between a brake opening position and a brake closing position along with the movement of the movable iron core; a coil which is arranged in the suspension space of the permanent magnet, surrounds the periphery of the movable iron core and drives the movable iron core and the brake shoe to move towards the brake opening position in a power-on state; and an elastic piece connected between the support and the movable iron core, wherein the elastic force of the elastic piece drives the movable iron core and the brake shoe to move towards the brake closing position. The magnetic field generated by the permanent magnet is utilized to enable the movable iron core to suspend in the permanent magnet, the movable iron core moves between the brake opening position and the brake closing position under the action of the electromagnetic force of the coil and the elastic force of the elastic piece, the movable iron core cannot be blocked, and the elevator safety brake has the advantages of being simple in structure, high in practicability and high in safety.
Description
technical field [0001] The invention relates to the technical field of elevator brakes, in particular to an elevator safety brake with improved structure. Background technique [0002] Elevator brakes are the most important elevator safety protection devices, including brackets, coils, moving iron cores, moving iron core guides, brake shoes, brake springs and connecting bolts. The working principle is: when the coil is energized, an electromagnetic thrust is generated to separate the brake shoe from the brake disc or wheel on the traction machine. When the coil is powered off, the electromagnetic force disappears, and under the action of the external brake spring force, the brake shoe It acts on the brake disc or wheel on the traction machine to form a power-off brake. [0003] A large number of accident cases such as elevator jumping to the top, bottoming, slipping, and even shearing show that the elevator brake has the following design defects: During normal operation, th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B66D5/30B66D5/14F16D65/18F16D121/18F16D121/20
CPCB66D5/30B66D5/14F16D65/18F16D2121/18F16D2121/20
Inventor 王保卫潘海宁文茂堂
Owner 深圳市质量安全检验检测研究院