Device and method for testing rotating speed of elevator traction machine
A technology of elevator traction machine and rotation speed, which is applied in the research field of speed detection in elevators, and achieves the effects of overcoming inconvenient installation, preventing speed errors and having a simple structure.
Active Publication Date: 2015-01-07
GUANGDONG INST OF SPECIAL EQUIP INSPECTION
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Problems solved by technology
[0003] In the detection equipment of the elevator control system detection device and the traction machine detection device, it is necessary to detect the speed of the traction machine. The common method is to install a rotary encoder on the output shaft of the traction machine motor, but this method is limited to experiments. It is not feasible to install a rotary encoder on the output shaft of the traction machine on site for portable on-site inspection equipment. Therefore, other methods are required to detect the speed of the traction machine.
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[0030] Such as figure 1 , figure 2 As shown, a device for testing the speed of an elevator traction machine in this embodiment includes a base 1, a bracket 2 is provided on the base, a beam 3 is provided on the bracket, one end of the beam 3 is connected to the bracket 2, and the other end is connected to the bracket 2. Connect the device housing 11, the device housing 11 is provided with a contact assembly 5, the contact assembly 5 is connected to the device housing 11 through a slide bar 4; the contact assembly is provided with a guide wheel 7 and a magnetic contact wheel 8, the The guide wheel 7 and the magnetic contact wheel 8 are in contact with the tested traction wheel 9; the magnetic contact wheel 8 is coaxially installed with a rotary encoder 10; a compression spring 6 is provided between the contact assembly 5 and the installation shell 11; When the measuring traction wheel 9 rotates, it drives the magnetic contact wheel 8 to rotate, the rotary encoder 10 works and...
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The invention discloses a device and method for testing the rotating speed of an elevator traction machine. The device comprises a base. A support is arranged on the base. A cross beam is arranged on the support. One end of the cross beam is connected with the support, the other end of the cross beam is connected with a device shell, and a contact assembly is arranged in the device shell and connected with the device shell through a sliding rod. Guide wheels and a magnetic contact wheel are arranged in the contact assembly and make contact with a tested traction wheel. A rotary encoder is coaxially installed on the magnetic contact wheel. Compression springs are arranged between the contact assembly and the installing shell. The rotating speed of the traction machine is detected in a tachometer wheel mode, the rotating speed of the tested traction machine is detected through the device, and therefore the rotating speed of the tested traction machine is accurately calculated. The device is simple in structure, and meanwhile overcomes the defect that installation is not convenient in an operating field.
Description
technical field [0001] The invention relates to the research field of speed detection in elevators, in particular to a device and method for testing the rotating speed of an elevator traction machine. Background technique [0002] The speed of the elevator traction machine is one of the main parameters of the elevator operation. The linear speed of the traction machine corresponds to the speed of the elevator car. Controlling the operation of the elevator is realized by controlling the speed of the elevator traction machine, that is, controlling the motor in the traction machine. speed to achieve. Now commonly used elevator traction machine speed control mostly adopts frequency conversion and variable voltage speed regulation method with speed feedback. Since the elevator car is in charge of changing from time to time, the traction machine speed control adopts constant speed control. To achieve constant speed control, it is necessary The instantaneous speed of the traction ...
Claims
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IPC IPC(8): G01P3/44
Inventor 佘昆代清友郑剑文黄绍伦
Owner GUANGDONG INST OF SPECIAL EQUIP INSPECTION