Escalator additional brake device
A technology of escalators and brakes, which is applied in escalators, transportation and packaging, etc., can solve problems such as narrow drive chain space, chain slack extension protection, auxiliary brake misoperation, etc., to improve timeliness and accuracy, ensure strength and Stability, the effect of avoiding malfunction
Active Publication Date: 2019-09-03
YUNGTAY ELEVATOR EQUIP CHINA
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AI Technical Summary
Problems solved by technology
[0006] 1. Due to the narrow space on one side of the drive chain, the ratchet structure is welded to the side chord of the truss, so the strength is insufficient and it is prone to damage;
[0007] 2. In the current escalator, the driving chain is usually only equipped with a chain break protection switch, and there is no extension protection for the chain slack. When the safety switch cannot distinguish between the chain break and the chain slack and operates, it is easy to cause auxiliary braking errors. Actions that affect the safety of passengers;
[0008] 3. The additional brake usually operates by the trigger signal of the electrical switch, but if the drive chain breaks and the switch fails, the auxiliary brake device will not operate, seriously affecting the safety of passengers
Method used
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0036] The escalator additional brake device of the present invention, such as Figure 1 to Figure 3 As shown, it includes a ratchet 1, a pawl 2, a first safety switch 28, a motor 8, a first action lever 10, a rotating connecting rod 13, a second safety switch 32, a third safety switch 33, a chain detection member, and a rotating connecting plate 34. Steering action block 22 , second action bar 24 , spring 26 , third action bar 30 . Wherein, in this embodiment, the chain detection member includes a counterweight 18 and a rubber block 19, the counterweight 18 and the rubber block 19 are fixedly connected, and the rubber block 19 is placed on the driving chain 20, when the chain is loose or Break, rubber block 19 and counterweight 18 can sag synchronously.
[0037] The ratchet 1 is installed on the main drive shaft of the escalator, t...
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The invention discloses an escalator auxiliary brake device. A pawl for triggering a first safety switch is hinged to a pawl base, a steering action block is driven by a motor to rotate, the two endsof a first action rod are connected with the steering action block and a rotating connecting rod, the two ends of a third action rod are connected with a rotating connecting rod and a rotating connecting plate correspondingly, the two ends of a second action rod are hinged to the pawl and the steering action block correspondingly, a spring is arranged on the second action rod in a sleeving manner,one end of the spring abuts against a spring check block fixed to the second action rod, the other end of the spring abuts against a spring support fixe to the pawl base, the two ends of the rotatingconnecting rod are arranged in a bearing, the rotating connecting plate for triggering a third safety switch is hinged to a pin shaft support, a chain detection part is connected with the rotating connecting plate and is arranged on a drive chain, and a switch triggering part matched with a second safety switch is fixed to a third action rod. Chain loosening and breaking can be accurately distinguished, when the chain is broken, an electrical control device fails, an escalator can be braked, and passenger safety is ensured.
Description
technical field [0001] The invention relates to an escalator, in particular to an additional brake device for an escalator, and is especially suitable for a heavy-duty escalator. Background technique [0002] The escalator is composed of a chain conveyor with a special structure and two belt conveyors with a special structure. It has a circular motion ladder path for going up or down between different storeys Stationary electric drive equipment for transporting passengers at an incline. As a safety component of escalators, additional brakes are widely used in the field of escalators. [0003] The escalator generally includes a working brake and an additional brake, wherein the working brake is used to stop the escalator at a speed that is almost uniformly decelerated during the stop operation and can keep it in a stopped state, while the additional brake mainly prevents the working brake from failing. The action of the additional brake should be able to cut off the control...
Claims
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IPC IPC(8): B66B29/00
CPCB66B29/00
Inventor 赵锋
Owner YUNGTAY ELEVATOR EQUIP CHINA