Speed limiting assembly, stall braking device and lifting equipment
A technology for lifting equipment and components, which is used in elevators, hoisting devices, transportation and packaging, etc., can solve the problem of inclination of the lifting body/lifting work platform, increasing the guide rail and the impact force of the lifting body/lifting work platform, and the existence of risk, etc.
Pending Publication Date: 2018-11-23
FICONT IND BEIJING
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Problems solved by technology
Obviously, the locking of the traction rope is not equivalent to the stall braking of the lifting car body / elevating work platform, and the harm caused by the failure of the connection between the lifting car body / elevating work platform and the traction rope cannot be avoided
[0004] Moreover, taking the more common lifting equipment as an example, two traction ropes are arranged separately to drive the lifting vehicle body / elevating work platform, and the stall braking device in the form of a safety lock only locks one of the traction ropes, resulting in The lifting car body / elevating work platform is tilted, and the lifting car body / elevating work platform generates a tilting moment, which increases the impact force on the guide rail and the lifting car body / elevating work platform, and there is a risk
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[0042] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0043]In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a p...
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The invention relates to the technical field of stall braking, and provides a speed limiting assembly, a stall braking device and lifting equipment. The speed limiting assembly comprises a speed measuring wheel, a centrifugal throwing block and a braking cam, wherein the centrifugal throwing block is fixed to the speed measuring wheel and rotates along with the speed measuring wheel; and the centrifugal throwing block meets the following conditions: when the rotating speed of the speed measuring wheel is not less than a set rotating speed, the centrifugal throwing block is started and is connected with the braking cam to drive the braking cam to rotate. When the speed limiting assembly is fixed on a lifting work platform and mounted on a guide track, the speed measuring wheel can measure the lifting speed of the lifting work platform. Once the rotating speed of the speed measuring wheel is not smaller than the set rotating speed, it shows that the lifting speed of the lifting work platform at the moment exceeds safe limit, the centrifugal throwing block is started at the moment to brake the braking cam to rotate, and thus, direct speed limitation or braking on the lifting work platform is realized. By the speed limiting assembly, harm caused by the condition of connection failing between the lifting work platform and a traction rope and risks caused by inclination of the lifting work platform can be avoided.
Description
technical field [0001] The invention relates to the technical field of stall braking, in particular to a speed limiting assembly, a stall braking device and lifting equipment. Background technique [0002] In order to control the unexpected situation of overspeed operation when lifting equipment transports personnel or goods, stall braking devices in the form of safety locks are commonly used in the lifting equipment industry to control overspeed safety issues during the operation of lifting equipment. The working principle of the stall braking device in the form of a safety lock is: when the hoisting power traction rope runs beyond the limited operating speed, the lifting car body / elevating work platform is stopped by locking the traction rope, thereby avoiding the hazards. [0003] The stall braking device in the form of a safety lock, in principle, does not directly control the running speed of the elevating car body / elevating work platform, but indirectly controls the e...
Claims
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Login to View More IPC IPC(8): B66B5/16B66D5/04
CPCB66B5/16B66D5/04
Inventor 张国柱张书东刘子昭张庆伟
Owner FICONT IND BEIJING