Lifting equipment, speed limiting device and triggering mechanism

A technology of triggering mechanism and installation unit, which is applied in the field of speed limiting device, triggering mechanism, and lifting equipment, and can solve the problems of many transmission parts and poor sensitivity.

Inactive Publication Date: 2020-08-14
HITACHI ELEVATOR CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical trigger mechanism has many tran

Method used

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  • Lifting equipment, speed limiting device and triggering mechanism
  • Lifting equipment, speed limiting device and triggering mechanism
  • Lifting equipment, speed limiting device and triggering mechanism

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0040]With the popularization of lifting equipment (such as elevators), more and more potential safety hazards have been exposed. In order to improve the safety performance of the lifting equipment, higher requirements are put forward for the safety device of the lifting equipment.

[0041] In particular, in order to improve safety performance, more and more elevators use mechanically activated limit devices. However, the traditional mechanical trigger limit device has a complex structure and a large number of parts, which will easily reduce its safe...

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Abstract

The invention discloses lifting equipment, a speed limiting device and a triggering mechanism. The triggering mechanism comprises a first magnetic pole, a second magnetic pole, a conductive part, a transmission unit and a coil, the second magnetic pole and the first magnetic pole are separated and arranged to form a magnetic field, the conductive part is movably arranged, and the conductive part comprises a first end and a second end; the transmission unit comprises a connecting part used for being in fixed transmission connection with a rotating shaft and is used for driving the conductive part to cut the magnetic field, or the transmission unit is used for driving the first magnetic pole and the second magnetic pole to move and cutting the magnetic field by the conductive part; and the coil comprises a first wiring end electrically connected with the first end and a second wiring end electrically connected with the second end. The triggering mechanism can directly utilize the runningspeed of a lift car to carry out triggering control, and the sensitivity is higher. The triggering mechanism is adopted in the speed limiting device, the number of transmission parts is small, and the sensitivity is further improved under the condition that the reliability is guaranteed. A speed limiter is applied to the lifting equipment, so that the operation safety of the lift car is favorablyimproved.

Description

technical field [0001] The invention relates to the technical field of lifting equipment, in particular to a lifting equipment, a speed limiting device and a trigger mechanism. Background technique [0002] The safety devices of lifting equipment (including elevators) include safety gear and speed limiting device, which can make the car of the lifting equipment emergency brake after exceeding a certain speed, so as to prevent extreme accidents such as free fall of the car. [0003] The main functions of the traditional speed limiting device include two aspects: the first aspect is that when the car overspeeds to the first limit speed, trigger the electrical switch to disconnect the safety circuit, thereby braking through the traction machine brake; the second aspect is , if the braking in the above first aspect is unsuccessful and the car continues to exceed the second speed limit (the second speed limit is greater than the first speed limit), the limiter will generate a pul...

Claims

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Application Information

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IPC IPC(8): B66B5/04B66B5/18B66D5/16
CPCB66B5/04B66B5/185B66D5/16
Inventor 刘术棠谢炜卢晓民
Owner HITACHI ELEVATOR CHINA
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