WO2009036692A1

WO2009036692A1 - An unloading alternate current permanent-magnet synchronous dragging machine

Info

Publication number: WO2009036692A1
Application number: PCT/CN2008/072355
Authority: WO
Inventors: Fangui Meng
Original assignee: Fangui Meng
Priority date: 2007-09-14
Filing date: 2008-09-12
Publication date: 2009-03-26
Also published as: CN101139065A

Abstract

An unloading alternate current permanent-magnet synchronous dragging machine comprises a dragging machine seat(18) and alternate current permanent-magnet synchronous motor(14) with an encoding device(15), a dragging wheel(1), a drum-typed or plate-typed clasping brake system(9) and a turning gear. The alternate current permanent-magnet synchronous motor(14), the ragging wheel(1), the drum-typed or plate-typed clasping brake system(9) and the turning gear are all arranged on the dragging machine seat(18). The alternate current permanent-magnet synchronous motor(14) is fixed on the dragging machine seat(18) through a motor end cover(17), the spigot end of the dragging wheel(1) is provided with an end cover(4) with an inner splined sleeve, the inner splined sleeve of the end cover(4) is engaged with a spline on the end of a motor shaft(16), a brake disc(8) of the clasping brake system(9) is fixed on the side of the dragging wheel(1), the brake disc(8) and the dragging wheel(1) are put together on a hollow dragging shaft(7) through an inner embedded bearing(2), the hollow dragging shaft(7) is fixed with the dragging brake machine seat(18), a clasping brake coil and a brake body of the clasping brake system(9) are put together on the dragging machine seat(18).

Description

Unloading wheel type AC permanent magnet synchronous traction machine

[Technical Field]

The invention relates to an AC permanent magnet synchronous traction machine for traction elevators, in particular to an unloading wheel type AC permanent magnet synchronous traction machine. It is suitable for vertical lifting equipment such as passenger elevators, sightseeing elevators, medical elevators, cargo elevators, etc. It is also suitable for transportation equipment such as escalators and moving walkways.

【Background technique】

At present, the conventional traction type elevators installed in the hoistway of a high-rise building are generally driven by a traction device traction machine through a traction sheave and a guide wheel to pull the wire rope to suspend the car, counterweight, balance chain (or balance rope), etc. The suspension transmission system is constructed, and the friction force generated by the traction sheave and the wire rope is used to provide sufficient traction driving force to directly drive the car to move up and down along the hoistway. When the traction sheave is subjected to the traction force, the rotor shaft and the traction machine shaft of the motor are also subjected to bending moments, which are easy to cause bending deformation of the rotating shaft and the outer casing, and are also prone to vibration and low frequency noise. The motor bearing is also easy to wear early, and the overall running performance Falling, even affecting the life of the traction machine and the elevator. Therefore, in the design of the permanent magnet synchronous traction machine used in the existing traction elevator, the traction condition of the traction machine (motor shaft) of the traction machine must consider the following two factors simultaneously: (1) Consider providing sufficient The radial bearing capacity of the suspension drive system consisting of suspended car, counterweight, etc.; (2) Consider providing sufficient torque to move the entire suspension system up and down. This will increase the diameter of the designed traction machine main shaft (ie, the motor shaft), and also increase the volume and material consumption of the traction machine, increasing the manufacturing cost.

[Summary of the Invention]

The object of the present invention is to provide an unloading wheel type AC permanent magnet synchronous traction machine, which effectively solves the problem that the traction axis of the permanent magnet synchronous traction machine has large diameter and material consumption, and the structural design thereof is reasonable. Compared with similar products, the shaft diameter of the motor shaft can be reduced, making the whole machine more compact, small in size and light in weight, improving the safety, reliability and stability of the operation, significantly reducing the noise of the traction machine and expanding its application range.

The object of the present invention is achieved as follows: The machine comprises a traction machine base and an AC permanent magnet synchronous motor with an encoder assembled thereon, a traction sheave, a drum or disc brake system, a turning device, The technical point is that: the AC permanent magnet synchronous motor is fixed on the hoisting machine base through a motor end cover, and the end of the traction wheel is provided with an end cap with an internal spline sleeve, and the end cover The inner spline sleeve meshes with the spline of the motor shaft end, the brake disc of the brake system is fixed at the side end of the traction sheave, and is assembled with the traction sheave on the same hollow traction shaft through the in-line bearing, the hollow traction shaft Fixed with the traction machine base, the brake coil and the brake body of the brake system are assembled on the towing machine base.

The motor end cover of the AC permanent magnet synchronous motor is integrated with the traction machine base, the hollow traction shaft is fixed with the motor end cover, and the brake coil and the brake body of the brake system are assembled in the Motor end cap On.

The traction sheave and the brake disc adopt a split structure or a unitary structure.

The hollow traction shaft and the traction machine base adopt a split structure or a unitary structure.

The hollow traction shaft and the motor end cover adopt a split structure or a unitary structure.

Since the motor shaft of the AC permanent magnet synchronous motor of the present invention is engaged with the end cap with the internal spline sleeve provided at the end of the traction sheave through the spline of the shaft end thereof, the brake disc of the brake system is fixed on the traction The side end of the wheel is assembled with the traction sheave on the same hollow traction shaft through the in-line bearing, so the structural design is reasonable, and the torque generated by the motor of the traction machine is transmitted through the spline-coupled motor shaft. On the traction sheave, the traction sheave rotates through the wire rope to provide sufficient torque for the elevator car to move up and down; and the traction sheave is assembled by the in-line bearing on the hollow traction shaft fixed to the traction machine frame. Therefore, the radial load on the traction sheave is transmitted directly to the hoisting machine base and not to the motor shaft. The motor shaft of this unloading wheel structure is mainly subjected to the torque and does not bear the bending moment. Therefore, it effectively solves the problem that the permanent magnet synchronous traction machine has a large diameter of the traction shaft and a large material consumption. Compared with similar products, the shaft diameter of the motor shaft can be reduced, making the whole machine more compact and compact. Small, light weight, improve the safety, reliability and smoothness of operation, and significantly reduce the noise of the traction machine. The traction machine can be widely applied to a traction elevator directly driven by a traction machine traction wheel such as a passenger elevator, a sightseeing elevator, a medical elevator, and a cargo elevator. It can also be used on transportation equipment such as escalators and moving walkways. In particular, the traction machine is matched for use in an indirect drive traction elevator, so that the running quality of the traction elevator can be significantly improved, and the applicable range can be significantly expanded.

[Description of the Drawings]

The invention is further described below in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a type I structure of the present invention.

Figure 2 is a view taken along the line A in Figure 1.

Figure 3 is a schematic view of a type II structure of the present invention.

Figure 4 is a B-direction view of Figure 3.

Fig. 5 is a schematic view showing a single winding structure of a traction sheave in a direct drive elevator of the present invention.

Fig. 6 is a schematic view showing a structure of a traction sheave rewinding type of the present invention in a direct drive elevator.

7 , 8 and 9 are respectively schematic views of the single-wound structure of the traction sheave in the indirect drive elevator of the present invention. 10, 11, and 12 are respectively schematic views of the reeling structure of the traction sheave in the indirect drive elevator of the present invention. The serial number in the figure shows: 1 traction sheave, 2 bearing, 3 retaining ring, 4 end cap, 5 dust cap, 6 spline, 7 hollow traction shaft, 8 brake disc, 9 brake system, 10 pinion, 11 Crankbar, 12 support, 13-disc wheel, 14 AC permanent magnet synchronous motor, 15 encoder; 16 motor shaft, 17 motor end cover, 18 traction Machine base, 19 car, 20 traction machine, 21 guide wheel, 22 frame steel beam, 23 traction wire rope, 24 counterweight device, 25 control system, 26 counterweight upper pulley, 27 counterweight lower pulley, 28 Bottom pit pulley, 29 wire rope fixing device and base, 30 wire rope tensioning device and frame steel beam, 31 drive wire rope; 32 lower pulley, 33 fixed pulley, 34 double winding pulley.

【detailed description】

The specific structure of the present invention will be described in detail based on Figs. The machine can be designed into an I-type structure according to actual needs and possible (AC permanent magnet synchronous motor 14 and traction machine base 18 are separated structure, as shown in Figure 1-2) or Π-type structure (AC permanent magnet synchronous motor) 14 is integrated with the hoisting machine base 18, as shown in Figure 3-4). The unloading wheel type AC permanent magnet synchronous traction machine of the I type structure comprises a traction machine base 18 and an AC permanent magnet synchronous motor 14 with an encoder 15 assembled thereon, a hollow traction shaft 7, and a traction sheave 1 , drum or disc brake system 9, cranking device and so on. Among them, the specifications and shape of the AC permanent magnet synchronous motor 14, drum or disc brake system 9, and the turning device are determined according to the design requirements. The motor end cover 17 of the end of the AC permanent magnet synchronous motor 14 is integrally formed with the motor housing, and the AC permanent magnet synchronous motor 14 is fixed to the traction machine base through the motor end cover 17 and the fastening bolts. 18 on. The end of the traction sheave 1 is provided with an end cap 4 with an inner spline sleeve, and the inner spline sleeve of the end cap 4 meshes with the spline of the end of the motor shaft 16 to transmit the power output from the motor shaft 16 to On the traction wheel 1. The brake disc 8 of the brake system 9 is fixed to the side end of the traction sheave 1 and assembled with the traction sheave 1 through the in-line bearing 2 on the same hollow traction shaft 7, and the traction sheave 1 is completely supported on the hollow traction shaft 7 on. The outer ring of the bearing 2 is axially positioned on the hollow traction shaft 7 by means of a retaining ring 3 and a fastening screw, and the inner ring of the bearing 2 is axially positioned by the stop of the end cover 4. The traction sheave 1 and the brake disc 8 can be of a split structure as described above and then fastened together by fastening bolts. It is also possible to use an integrated structure to directly machine the traction sheave 1 and the brake disc 8 as a whole. The hollow traction shaft 1 and the hoisting machine base 18 can be of a split structure, and the hollow traction shaft 7 and the hoisting machine base 18 are fixed together by fastening bolts. It is also possible to use a unitary structure to directly machine the hollow traction shaft 7 and the hoisting machine base 18 into one piece. The brake coil and the brake body (not shown) of the brake system 9 are assembled on the hoisting machine base 18. The turning device employs a conventional structure including a turning lever 11 having a pinion 10 and a hand wheel 13 . The disk lever 11 is assembled by the support base 12 and the hoisting machine base 18 on the AC permanent magnet synchronous motor 14, and the disk lever 11 is moved in the axial direction thereof to complete the inner ring gear of the pinion 10 and the brake disk 8. The action of engaging or disengaging, so that when the traction machine circuit is cut off, the manual opening is performed to cooperate with the manual turning.

The basic structure of the unloading wheel type AC permanent magnet synchronous traction machine of the Π-type structure is mostly the same as that of the I-type structure, except that the motor end cover 17 of the AC permanent magnet synchronous motor 14 is integrated with the hoisting machine base 18, and the hollow hoisting The lead shaft 7 and the motor end cover 17 may be of a separate structure and then fastened together by fastening bolts. Also With the integral structure, the hollow traction shaft 7 and the motor end cover 17 are directly processed into one body. The brake coil and the brake body of the brake system are assembled on the motor end cover 17.

In particular use of the elevator, the traction machine 20 of the present invention may be disposed above, below or to one side of the hoistway, and in general, is disposed above the hoistway.

The specific implementation process of the present invention will now be described by taking the traction machine disposed above the hoistway as an example. Traction machine

In the case where 20 is disposed above the hoistway, the hoisting machine 20 is mounted on the frame steel beam 22, and the hoisting machine 20 is supported by the frame steel beam 22. A traction wire rope 23 is suspended from the traction sheave 1 of the hoisting machine 20. One end of the wire rope 23 is hung with a car 19 and a certain load and a traveling cable, and the other end is suspended with a counterweight device 24. At the same time, one end of the balance chain (rope) is fixed to the lower portion of the car 19, and the other end of the balance chain (rope) is fixed to the lower portion of the counterweight device 24. In this way, the balance chain (rope) is suspended.

When the traction machine 20 is in a non-operating state, the brake system 9 provides a clamping force to cause the brake disc 8 and the traction sheave 1 to be at rest. At this time, the traction sheave 1 of the hoisting machine 20 is subjected to the radial bearing force from the suspension system, and the brake disc 8 is subjected to the clamping force of the brake system 9 to make it stand still. Brake system 9, traction sheave 1, brake disc 8 transmits the force to the bearing 2, the hollow traction shaft 7, and finally to the traction machine base 18. At this time, the forced state of the hollow traction shaft 7 is subjected to the bending moment, and the motor shaft 16 is not subjected to the load.

In the normal working state, the traction system 9 is energized to open, the motor drives the traction sheave 1 to rotate, the suspension system of the elevator moves up and down, and the traction sheave 1 of the traction machine 20 is subjected to radial load from the suspension system. The force and the torque that the load moves up and down. The radial bearing capacity is finally transmitted to the traction machine frame 18 through the traction sheave 1, the bearing 2, and the hollow traction shaft 7; the above-mentioned transport load is the torque of the suspension system moving up and down through the traction sheave 1 The end cap 4 is finally transferred to the motor shaft 16. At this time, the state of the hollow traction shaft 7 is subjected to the bending moment, and the state of the force of the motor shaft 16 is the withstanding torque.

The traction machine 20 is in an emergency rescue (cranking) state, the circuit of the traction machine 20 is cut off, the manual opening is performed with the manual cranking, the elevator suspension system is moved up and down, and the traction sheave 1 of the traction machine .20 is subjected to suspension. The radial bearing capacity of the system. The hand wheel 13 and the brake disk 8 are subjected to the torque of the upper and lower movement of the load. The radial bearing capacity is finally transmitted to the traction machine frame 18 through the traction sheave 1, the bearing 2, and the hollow traction shaft 7; the torque of the suspension system moves up and down through the traction sheave 1, the brake disc 8, and the small The gear 10 and the disk lever 11 are finally transferred to the handwheel 13 of the hand. At this time, the hollow traction shaft 7 is subjected to the bending moment, the motor shaft 16 is not subjected to the load, and the hand wheel 13 is subjected to the torque.

As shown in Figure 5-12, according to the actual use requirements, the traction machine 20 can be used in the direct drive traction elevator, or it can be matched with the "indirect drive traction elevator" designed by me. The lead wheel can be either single-wound or re-wound. In the drive structure for directly driving the traction elevator, for the single-wound structure, as shown in Fig. 5, the traction wire rope 23 on the car 19 bypasses the traction sheave of the traction machine 20 on the fixed frame steel beam 22. 1. The guide wheel 21 is directly fixed to the counterweight device 24 which is matched by the car 19.

For the rewinding structure, as shown in FIG. 6, the traction wire rope 23 on the car 19 bypasses the traction sheave 1, the guide wheel 21 of the hoisting machine 20 fixed on the frame steel beam 22, and then bypasses the trawling The guide wheel 1 and the guide wheel 21 are fixed to the counterweight device 24 which is matched to the car 19.

In the drive structure for indirectly driving the traction elevator, for the single-wound structure, as shown in Figs. 7, 8, and 9. In the embodiment of FIG. 7 and FIG. 8, one end of the driving wire rope 31 of the electric traction sheave 1 of the hoisting machine 20 is bypassed, and the counterweight upper moving pulley 26 of the counterweight device 24 is fixed on the wire rope tensioning device and the frame steel beam 30; The other end of the drive wire 31 is fixed to the wire rope fixing device and the base 29 via the undercut pulley 28 and the counterweight lowering pulley 27 of the counterweight device 24. In the embodiment of Fig. 9, one end of the drive wire rope 31 that bypasses the traction sheave traction wheel 20 is driven by the counterweight upper drive pulley 26 of the counterweight device 24 and fixed on the wire rope tensioning device and the frame steel beam 30. The pulley 33 is connected with the wire rope tensioning device and the frame steel beam 30, and drives the other end of the wire rope 31, the wire rope fixing device and the base 29 fixed to the bottom of the hoistway via the bottom hole fixed pulley 28 and the counterweight lower moving pulley 27 and the lower pulley 32. on.

For the rewinding structure, as shown in Figs. 10, 11, and 12, in the embodiment of Figs. 10 and 11, the end of the driving wire 31 of the traction sheave 1 of the hoisting machine 20 is bypassed, and the counterweight of the counterweight device 24 is used. The upper driving movable pulley 26 is fixed on the wire rope tensioning device and the frame steel beam 30, drives the other end of the wire rope 31, bypasses the complex winding pulley 34, and then bypasses the traction sheave 1, and the through hole is the pulley 28 and the pair The counterweight lowering pulley 27 of the weight device 24 is fixed to the wire rope fixing device and the base 29. In the embodiment of Fig. 12, the other end of the drive wire 31 of the traction sheave 1 that bypasses the hoisting machine 20 is driven by the counterweight of the counterweight device 24 and is fixed to the wire rope tensioning device and the frame steel beam 30. The upper fixed pulley 33 is connected with the wire rope tensioning device and the frame steel beam 30, drives the other end of the wire rope 31, bypasses the complex winding pulley 34, and then bypasses the traction sheave 1, passes the bottom pulley 28 and the pair The counterweight lowering pulley 27 of the weight device 24 is fixed to the wire rope fixing device and the base 29.

Claims

Rights request

1. An unloading wheel type AC permanent magnet synchronous traction machine, comprising a traction machine base and an AC permanent magnet synchronous motor with an encoder assembled thereon, a traction sheave, a drum or a disc brake system, a turning device, wherein: the alternating current permanent magnet synchronous motor is fixed on the hoisting machine base through a motor end cover, and the end end of the traction wheel is provided with an end cap with an inner spline sleeve, The inner spline sleeve of the end cover meshes with the spline of the motor shaft end, the brake disc of the brake system is fixed at the side end of the traction sheave, and is assembled with the traction sheave through the in-line bearing on the same hollow traction shaft, hollow The traction shaft is fixed with the traction machine base, and the brake coil and the brake body of the brake system are assembled on the towing machine base.

2 . The unloading wheel type AC permanent magnet synchronous traction machine according to claim 1 , wherein: the motor end cover of the AC permanent magnet synchronous motor is integrated with the traction machine base, and the hollow traction The shaft is fixed to the motor end cover, and the brake coil and the brake body of the brake system are assembled on the motor end cover.

The unloading wheel type AC permanent magnet synchronous traction machine according to claim 1, wherein the traction sheave and the brake disc are of a split structure or a unitary structure.

4. The unloading wheel type AC permanent magnet synchronous traction machine according to claim 1, wherein: the hollow traction shaft and the traction machine base adopt a split structure or an integral structure.

5. The unloading wheel type AC permanent magnet synchronous traction machine according to claim 1, wherein: the hollow traction shaft and the motor end cover adopt a split structure or a unitary structure.

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