Additional brake and escalator or moving walk
A technology of brakes and driving sprockets, applied in escalators, transmission parts, belts/chains/gears, etc., can solve the problem of reducing the friction coefficient of friction plates and affecting the braking performance of additional brakes. The normal and safe operation of escalators or moving walks, etc. question
Pending Publication Date: 2021-12-14
HITACHI ELEVATOR GUANGZHOU ESCALATOR +1
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Problems solved by technology
[0004] Based on this, it is necessary to provide an additional brake and an escalator or moving walk, aiming at solving the problem that the friction coefficient of the friction plate caused by lubricating oil in the prior art decreases, which affects the braking performance of the additional brake and the normal operation of the escalator or moving walk. safe operation issues
Method used
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[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0025] like figure 1 Shown is an additional brake shown in an embodiment of the present application, and the additional brake includes: a driving sprocket 10 and a friction plate 30 . The inside of the drive sprocket 10 is formed with an accommodating cavity 11 , the outer circumference ...
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The invention relates to an additional brake and an escalator or a moving walk. The auxiliary brake comprises a driving sprocket and a friction plate, wherein a containing cavity is formed in the driving sprocket, the outer circumference of the driving sprocket is used for being sleeved with a driving chain, a first oil blocking groove is formed in the outer circumferential wall of the driving sprocket, and the first oil blocking groove is located between the driving chain and the containing concave cavity; and the friction plate is arranged in the containing cavity. Due to the fact that the first oil blocking groove is formed in the outer circumferential wall of the driving sprocket, in the running process, lubricating oil coated on the driving sprocket and the driving chain is blocked by the first oil blocking groove, the lubricating oil can only flow into an oil receiving disc along the first oil blocking groove, and cannot flow into the containing cavity and contaminate the surface of the friction plate, so that the friction coefficient of the friction plate cannot be reduced, the additional brake is ensured to have excellent braking performance, and the escalator or the moving walk can be ensured to continuously, normally and safely run.
Description
technical field [0001] The invention relates to the technical field of elevator braking equipment, in particular to an additional brake and an escalator or moving walk. Background technique [0002] The additional brake is an auxiliary braking device in the escalator or moving walk. When the escalator or moving walk needs emergency braking, the additional brake acts quickly to effectively stop the escalator or moving walk. At present, the more commonly used additional brake in the industry is composed of a pawl device, a brake device, an electromagnetic device and a motion detection device, and is installed on the escalator truss system when in use. [0003] The brake device is usually composed of two friction plates, which are respectively pressed on the inner and outer sides of the brake disc, and the friction resistance generated by the relative movement of the friction plates and the brake disc is used to achieve braking. Escalators or moving walks use sprockets to driv...
Claims
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IPC IPC(8): B66B23/02B66B29/00F16H57/05
CPCB66B23/02B66B23/024B66B29/00F16H57/05
Inventor 李勇勇钟立泰何星泉张大明李春雷
Owner HITACHI ELEVATOR GUANGZHOU ESCALATOR