Toothless dragger in frame structure and its installation method
A technology of toothless traction machine and installation method, which is applied in the direction of transportation and packaging, elevators in buildings, etc., can solve problems such as difficulties, large axial size, and high strength requirements of the machine base
Inactive Publication Date: 2004-08-04
NINGBO XINDA ELEVATOR FITTINGS FACTORY
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Problems solved by technology
[0002] The existing toothless tractors without machine room (including small machine rooms) are installed in two ways: wall-mounted (including guide rail clip-mounted) and foot-mounted (including the suspension with the feet facing upwards). Due to structural limitations, each toothless traction machine can only be installed in one way, so users cannot flexibly choose the installation way according to the different requirements of the elevator shaft layout
Furthermore, the traditional gearless traction machine with an outer rotor structure has a traction wheel that is suspended outside the machine base, so the strength of the machine base is relatively high.
Moreover, its brake wheel is also suspended outside the machine base, so its axial dimension is relatively large, which brings difficulties and disadvantages to the short axial dimension of the machine room-less toothless traction machine.
Method used
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[0013] Such as figure 1 , figure 2 , image 3 As shown, the base 4 is equipped with a permanent magnet synchronous motor, and the stator core 11 embedded with coils is pressed and fitted on the base, and is closely matched with the base to form a stator. The rotor core 12 embedded with permanent magnets is pressed and sleeved in the rotor bracket 13, and closely matched with the rotor bracket to form the rotor. The rotor support 9 is supported in the center hole of the frame 4 via bearings 10 and 14 . When the stator coil is supplied with three-phase power by the frequency converter, the stator forms a rotating magnetic field and drives the rotor to rotate. The encoder 5 is used to measure the motor speed and the absolute position of the stator and rotor magnetic fields. After the frequency converter obtains these signals, it drives the toothless traction machine to run correctly according to the set requirements. The traction sheave 15 is coaxially installed on the rotor...
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The traction machine comprises machine base seat, motor brake, traction wheel and coder, in which the machine base seat is made into the form of cube with frame structure, the top surface, bottom surface, front surface and rear surface of said machine base seat are equipped with mounting holes respectively. The centre of end surface of machine base seat equipped with tractino wheel has inward recessed wide groove, so that the traction wheel and traction rope can be placed in the machine base seat. The stator of motor is press-covered in the machine base seat, and the rotor positioned on the exterior of periphery of the stator is press-covered in the rotor supporting frame, and is tightly fit with rotor supporting frame, and the armature end face friction disk of its brake is correspondent with rotor supporting frame in the machine base, seat.
Description
technical field [0001] The invention relates to a frame-type toothless traction machine for elevator car and its installation method, belonging to an elevator accessory and its installation method. Background technique [0002] The existing toothless tractors without machine room (including small machine rooms) are installed in two ways: wall-mounted (including guide rail clip-mounted) and foot-mounted (including the suspension with the feet facing upwards). Due to structural limitations, each toothless traction machine can only be installed in one way, so users cannot flexibly choose the installation way according to the different requirements of the elevator shaft layout. Furthermore, the traditional gearless traction machine adopting an outer rotor structure has a traction sheave suspended outside the machine base, so relatively high requirements are placed on the strength of the machine base. And its brake wheel is also suspended outside the mac...
Claims
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IPC IPC(8): B66B11/04
Inventor 潘式正赵宏年
Owner NINGBO XINDA ELEVATOR FITTINGS FACTORY