CN209740467U - Reinforced outer rotor permanent magnet synchronous traction machine - Google Patents

Abstract

the utility model provides a synchronous hauler of strenghthened type external rotor permanent magnetism, has solved the processing degree of difficulty that current hauler exists great, be unfavorable for the assembly, influences the performance scheduling problem of host computer. Including chassis, the frame of assembling on it, bearing and stopper, arbor wheel subassembly and rotor subassembly, its technical essential is: the shaft wheel assembly comprises a main shaft, a rotor sleeve fixed on the main shaft, and a traction wheel, a brake disc and a turning gear which are assembled together, wherein the gear platform end of the main shaft for fixing the rotor sleeve and the right end of the main shaft are respectively supported in shaft holes of the machine base and the supporting seat through a left bearing and a right bearing; the stator coil is fixed in the machine base, the rotor body of the rotor component, which is attached with the permanent magnet on the inner periphery, is arranged outside the stator coil, and the rotor body is fixedly connected with the left end of the main shaft by using the shaft end gland and the key; self-fan blades playing a role in assisting air cooling are uniformly distributed on the inner periphery of the rotor body. The novel bearing is reasonable in design, compact in fitting integration structure, small in occupied space, convenient to install and maintain and beneficial to enhancing the loading capacity of the main bearing and the heat dissipation and cooling effects of the engine body.

Description

reinforced outer rotor permanent magnet synchronous traction machine

Technical Field

The utility model relates to a hypervelocity, big load hauler, especially a synchronous hauler of strenghthened type external rotor permanent magnetism for high-rise building elevator. The super high speed means the rated speed is not lower than 7.0m/s, and the large load means the rated load is not less than 1600 kg. Belongs to the technical field of traction machines.

Background

In recent years, as the building height increases, the demand for an ultra-high speed hoist tends to increase, and therefore the demand for a speed of a ladder increases with the load of the ultra-high speed hoist. The applicant designs a basic structure disclosed by 'ultra-high-speed large-load outer rotor permanent magnet synchronous traction machine' with patent publication No. CN101973479A according to actual needs, which comprises a frame, a main shaft assembled on the frame, a stator coil, a rotor sleeve, a rotor body fixed on the rotor sleeve, a traction wheel, a disc type braking device and an encoder assembled at the rear end of the main shaft. The rated load of the machine is 1600Kg, the rated speed is 7.0m/s, and the load of the main shaft is 35 tons. In practical application, the bearings with the structure are found to be positioned at two ends of the main shaft, and the arrangement of the bearings has a large influence on the rigidity of the main shaft because the span of the two bearings is large and the load of the main shaft is high. The bearings are located at both ends of the main shaft, which will cause the following problems: firstly, because the rated torque of the high-speed tractor is larger and the load of the main shaft is higher, the size of a stator and a rotor of the main machine is lengthened, the width of a traction wheel is increased, the axial length of the main machine is correspondingly increased, the span of two bearings is increased, and the rigidity of the main shaft is weakened. If the rigidity is increased, the diameter of the main shaft needs to be increased, and the like, the overall external dimension of the main machine needs to be increased, so that the material is wasted, and more space is needed for a user. Secondly, the manufacturability such as assembly and maintenance is poor, when the assembly and maintenance are carried out, the rotor assembly, the traction sheave and the like are required to be arranged on the main shaft to form an integral part for assembly, the length direction of the required assembly space is large, and the difficulty of installation and maintenance can be further increased under the condition that the space of a customer using site is tight.

The patent publication No. CN101234724A discloses an outer rotor type permanent magnet synchronous gearless tractor with two end supports, which mainly comprises a bearing seat, a rotating shaft, a traction wheel, a machine base, a rotor and a stator. The bearings are still positioned at the two ends of the main shaft, the span of the stress point of the main shaft is large, and the rigidity of the main shaft is poor for a traction machine with large shaft load. The rotating shaft for directly fixing the traction sheave is a supporting structure at two ends, so that although the stress state of the rotating shaft is improved, the traction sheave is directly fixed on the rotor by using screws, the replaceability of the traction sheave is poor, and the vibration and the damage of rotor magnetic steel are easily caused during the replacement. In addition, the traction machine brake of such a structure is not easy to install, and there is a problem that heat dissipation and protection against the outer rotor of the traction machine are not facilitated. The structure is suitable for small and medium-sized motors. It is not suitable if the large-load motor still uses the above structure. The rotor in the structure is connected with the traction sheave, the traction sheave is arranged in the middle of the main shaft, when the deflection change of the main shaft is large, the traction sheave is deviated from the central line along with the deformation of the main shaft, and the rotor is connected with the traction sheave and is also deviated from the central line, so that the air gap of the main machine is not uniform.

Patent publication No. CN203545411U discloses a structure of "permanent magnet synchronous gearless machine with improved structure": the brake device comprises a machine base with a double-support-plate structure, a brake disc, a traction sheave, a main shaft and a permanent magnet motor, wherein the machine base is integrally cast, the brake disc, the traction sheave, the main shaft and the permanent magnet motor are assembled together, and the brake disc and the traction sheave are arranged inside the machine base. When the motor is installed, the front cover and the motor shell are matched through the seam allowance and fastened by screws, the brake disc and the traction wheel penetrate through the large holes in the supporting plate to be installed in the base, the front cover and the large holes in the supporting plate are matched through the seam allowance and are locked and matched with the supporting plate through bolts, so that the seam allowance connection and positioning are required at least twice, and the installation is complex. The traction wheel and the brake disc are integrated, so the casting processing difficulty is higher; the front and the back of the bearing are supported into an integral plate type casting part which is connected by only a plurality of supporting plates to bear single thickness. Therefore, the above-described structure is not suitable for an ultra-high speed and large-load hoisting machine for a high-rise building elevator.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a strenghthened type external rotor permanent magnetism synchronous hauler has solved the higher, great hauler of loading capacity of speed of prior art, has the processing degree of difficulty that causes because of the structure great, be unfavorable for the assembly of hauler, influences the performance scheduling problem of host computer, its reasonable in design, and the accessory integrates compact structure, and occupation space is little, and the installation is convenient with the maintenance, is favorable to strengthening main bearing carrying capacity and organism heat dissipation cooling effect.

The utility model adopts the technical proposal that: this synchronous hauler of strenghthened type external rotor permanent magnetism includes frame, the frame, bearing and the stopper of the support main shaft of equipment on the frame, and arbor wheel subassembly and rotor subassembly that link together with the main shaft, its technical essential is: the shaft wheel assembly comprises a main shaft, a rotor sleeve fixed on the main shaft, a traction wheel assembled with the rotor sleeve, a brake disc and a turning gear, wherein the blocking end of the rotor sleeve fixed in the middle of the main shaft is supported in a shaft hole of the base through a left bearing, and the right end of the main shaft is supported in the shaft hole of the supporting seat through a right bearing; the stator coil is fixed in the machine base, a rotor body which forms a rotor assembly and is attached with permanent magnets on the inner periphery is arranged outside the stator coil, and the rotor body is fixedly connected with the left end of the main shaft by using a shaft end gland and a key; self-fan blades playing a role in assisting air cooling are uniformly distributed on the inner periphery of the rotor body.

The brake adopts caliper disc brakes which are uniformly distributed on the periphery of the supporting seat, and brakes the traction sheave by using brake discs which are respectively clamped in the shaft wheel assembly and assembled with the traction sheave.

The utility model has the advantages and positive effects that: because the left bearing arranged in the bearing seat shaft hole and the right bearing arranged in the machine seat shaft hole are respectively supported at the two ends of the main shaft fixed with the traction sheave and are supported at the right end and the middle shelf end of the main shaft, the design is reasonable, the span between the bearings at the two ends of the traction sheave is reduced, the stress of the main shaft is more reasonable, the bending moment of the main shaft is reduced, the rigidity is increased, and the load-carrying capacity of the main shaft is favorably enhanced; in addition, the shaft wheel assembly and the rotor assembly which are connected with the main shaft can realize the independent operation of small units of each part when the whole machine is assembled, and the assembly manufacturability is good, so the parts are compact in integration structure, small in occupied space and convenient to install and maintain. Meanwhile, the self-fan blades which play a role in assisting air cooling are uniformly distributed on the inner periphery of the rotor body, so that the strength of the rotor body is increased, and the self-fan air cooling effect is also achieved when the main machine rotates, and the machine body is more favorable for heat dissipation and cooling of the machine body for a high-power traction machine with the main machine load of 2000Kg, the rated speed of 10m/s and the main shaft load of 47 tons.

Therefore, the utility model provides a prior art's speed higher, the great hauler of loading capacity, there is the processing degree of difficulty that causes because of the structure great, be unfavorable for the assembly of hauler, influence the performance scheduling problem of host computer.

Drawings

The invention is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a right side view of FIG. 1;

Fig. 3 is a schematic view of a structure of the rotor body provided with self-fanning fins of fig. 1.

The sequence numbers in the figures illustrate: the motor comprises a base 1, a stator coil 2, a self-fanning plate 3, a shaft end gland 4, a key 5, a rotor body 6, a permanent magnet 7, a fan 8, a left bearing 9, a rotor sleeve 10, a traction sheave 11, a brake 12, a turning gear 13, a supporting seat 14, a main shaft 15, a right bearing 16, a brake disc 17 and an underframe 18.

Detailed Description

The specific structure of the present invention is described in detail with reference to fig. 1 to 3. The reinforced outer rotor permanent magnet synchronous traction machine comprises a base frame 18, a machine base 1 which is assembled on the base frame 18 and supports a main shaft 15, a supporting seat 14, a brake 12, a shaft wheel assembly, a rotor assembly and other parts which are connected with the main shaft 15. Wherein the base frame 18 is used as a foundation for connecting and fixing the machine base 1 and the supporting seat 14, and the machine base 1 and the supporting seat 14 are respectively fixed on the base frame 18. The shaft wheel assembly comprises a main shaft 15, a rotor sleeve 10 fixed on the main shaft 15, a traction wheel 11 assembled with the rotor sleeve 10, a brake disc 17, a turning gear 13 and other parts. The end of the main shaft 15 fixed with the rotor sleeve 10 is supported in the shaft hole of the machine base 1 through the left bearing 9, and the right end of the main shaft 15 is supported in the shaft hole of the supporting seat 14 through the right bearing 16. The stator coil 2 is fixed in the machine base 1, a rotor body 6 which forms a rotor assembly and is attached with a permanent magnet 7 on the inner periphery is arranged outside the stator coil 2, and the rotor body 6 is fixedly connected with the left end of the main shaft 15 by using a shaft end gland 4 and a key 5. The inner periphery of the rotor body 6 is uniformly distributed with self-fan blades 3 which play a role of auxiliary air cooling. The self-fan 3 can function as a fan when the main body rotates, and the self-fan 3 also functions to increase the mechanical strength of the rotor body 6.

The brake 12 is a caliper disc brake uniformly distributed on the outer circumference of the bearing housing 14 and brakes the traction sheave 11 by clamping brake discs 17 assembled with the traction sheave 11 in the sheave assembly, respectively. In the embodiment, three caliper disc brakes are uniformly distributed and fixed, and when braking is needed, the three brakes 12 can simultaneously clamp the brake disc 17 for braking and simultaneously stop the traction sheave 11 from rotating, so that the braking operation is safer and more reliable.

During assembly, the base frame 18 is used as a foundation for connecting and fixing the base 1 and the supporting seat 14, the base 1 and the supporting seat 14 are respectively fixed on the base frame 18, and after the base frame 18, the base 1 and the supporting seat 14 are combined together, the shaft hole in the base 1 and the shaft hole in the supporting seat 14 are processed to ensure the concentricity of the shaft holes. The stator coil 2 is installed in the base 1 by interference fit and key connection. The rotor sleeve 10 is fixedly connected with the main shaft 15 in an interference fit manner, and the traction sheave 11, the brake disc 17 and the turning gear 13 are connected with each other through bolts and pins, and finally form a shaft wheel assembly with the rotor sleeve 10 and the main shaft 15. The left bearing 9 is assembled in the shaft hole of the machine base 1 by a connecting piece and is supported at the end of the boss fixed with the rotor sleeve 10 in the middle of the main shaft 15, the right bearing 16 is assembled in the shaft hole of the supporting seat 14 by a connecting piece and is supported at the right end of the main shaft, the positions of the supporting ends of the two bearings relative to the traction sheave 11 are relatively close, the generated bending moment is small, and the strength of the main shaft is better.

Claims (2)

1. The utility model provides a synchronous hauler of strenghthened type external rotor permanent magnetism, includes the chassis, assembles frame, bearing and the stopper of the support main shaft on the chassis, and arbor wheel subassembly and rotor subassembly, its characterized in that link together with the main shaft: the shaft wheel assembly comprises a main shaft, a rotor sleeve fixed on the main shaft, a traction wheel assembled with the rotor sleeve, a brake disc and a turning gear, wherein the blocking end of the rotor sleeve fixed in the middle of the main shaft is supported in a shaft hole of the base through a left bearing, and the right end of the main shaft is supported in the shaft hole of the supporting seat through a right bearing; the stator coil is fixed in the machine base, a rotor body which forms a rotor assembly and is attached with permanent magnets on the inner periphery is arranged outside the stator coil, and the rotor body is fixedly connected with the left end of the main shaft by using a shaft end gland and a key; self-fan blades playing a role in assisting air cooling are uniformly distributed on the inner periphery of the rotor body.

2. The reinforced outer rotor permanent magnet synchronous traction machine of claim 1, wherein: the brake adopts caliper disc brakes which are uniformly distributed on the periphery of the supporting seat, and brakes the traction sheave by using brake discs which are respectively clamped in the shaft wheel assembly and assembled with the traction sheave.