Traction machine integrating fan and traction wheel

Abstract

A traction machine integrating a fan and a traction wheel relates to the technology of traction machines and comprises a motor shell, a stator, a rotor, a rotating shaft and the traction wheel, the traction wheel is fixed on the rotating shaft and comprises a supporting sleeve, an outer ring and a plurality of fan blades, the outer surface of the outer ring is provided with a rope groove, and the fan blades are evenly distributed around the axis of the rotating shaft and connected between the supporting sleeve and the outer ring. The included angle between the fanning face of the fan blade and the axis of the rotating shaft is an acute angle, an air guide hole is formed in the side wall of the front end, facing the traction wheel, of the motor shell, and the fan blade, the air guide hole, the stator and the ventilation opening on the traction wheel form a cooling air channel. Compared with the prior art, the traction wheel has the advantages of simple structure, small size, low manufacturing cost, good heat dissipation performance and convenience in replacement of the traction wheel, and can be applied to the traction machine with the inner rotor and the outer rotor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technology of traction machine, especially the traction machine of fan and traction wheel integrated body. BACKGROUND

[0002] The traction machine for elevator is generally adopted natural heat dissipation due to the restriction of use environment and condition, so the volume and weight of the traction machine are relatively large and the cost is high, in order to reduce the cost and reduce the weight, setting fan to give stator heat dissipation is the best path, so someone conceives to additionally set fan on the rotating shaft of traction machine, the fan is located in the casing to ensure the smoothness of air guide channel, this kind of traction machine, since the fan is additionally added, so the overall volume of the traction machine is inevitably large, since the fan is set in the casing, so its diameter cannot be larger than the diameter of the stator of inner rotor motor or the diameter of the outer rotor of outer rotor, so the fan volume is limited.

[0003] Some technologies additionally set electric fan to inject cold air to the stator of traction machine to reduce the temperature, this kind of technology, since the traction machine works for a long time, and the fan is easy to be damaged after long time work, leading to the damage of traction machine due to the failure of timely temperature reduction, thereby affecting the overall reliability of the traction machine, in addition, additionally setting fan will lead to the high manufacturing cost of traction machine.

[0004] To this end, the patent application technology CN202410250359.8 traction wheel and rotor integration technology, including the base, stator winding and rotor mechanism, the stator winding is installed on the base, the rotor mechanism is installed on the base, and is matched with the base rotation, the stator winding has second heat dissipation channel and second heat dissipation port, the rotor mechanism has first heat dissipation channel and first heat dissipation port, the first heat dissipation port, first heat dissipation channel, second heat dissipation channel and second heat dissipation port are communicated in turn;Wherein, the rotor mechanism has fan blade, the fan blade is located between the first heat dissipation port and the second heat dissipation port, and the both ends of the fan blade are installed on the mounting seat and the traction wheel respectively, so that the connection strength of the mounting seat and the traction wheel can be increased, so that the overall structural strength of the rotor mechanism is improved. And the fan blade is located in the first heat dissipation channel, and the fan blade is arranged along the radial direction of the traction wheel, so that the fan blade can rotate with the rotor mechanism under the condition of improving the strength of the rotor mechanism, so that the rotor mechanism can not only drive the traction wheel to rotate and provide power for the traction wheel, but also can be used as a fan to dissipate heat in the traction machine, improve the practicability of the traction machine. Moreover, the fan blade is arranged in the first heat dissipation channel, so that the space on the rotor mechanism is avoided, the fan blade is installed in the first heat dissipation channel, the compactness of the structure of the traction machine is improved, and the size of the traction machine is further miniaturized. The first heat dissipation port, the first heat dissipation channel, the second heat dissipation channel and the second heat dissipation port of the traction machine are communicated in turn, the first heat dissipation channel is used to absorb the heat generated by the rotor mechanism, and the second heat dissipation channel is used to absorb the heat generated by the stator winding. The rotor mechanism is matched with the base rotation, when the rotor mechanism is matched with the stator winding, the rotor mechanism rotates around the stator winding, and the rotor mechanism has a fan blade, and the fan blade is located between the first heat dissipation port and the second heat dissipation port. The fan blade rotates with the rotor mechanism, so that the fan blade absorbs the air of the first heat dissipation port, the air outside the traction machine flows into the first heat dissipation channel and the second heat dissipation channel, and the airflow in the heat dissipation channel is accelerated, so that the air inside and outside the traction machine is exchanged, so that the heat in the traction machine is discharged to the outside of the traction machine. The problem that the existing traction machine cannot automatically dissipate heat is solved. This technology is suitable for outer rotor structure only, and cannot be used for inner rotor structure, in addition, the traction wheel and the rotor are designed as a whole, so that the traction wheel and the rotor need to be replaced when the traction wheel is worn out. The traction wheel cannot be replaced alone, which increases the maintenance cost and the workload. Since the shaft cannot be arranged, the traction wheel cannot be supported by the shaft. In order to ensure reliability, the material and processing quality of the traction wheel are required to be high, so that the manufacturing cost is high. SUMMARY

[0005] The traction machine integrates the fan and the traction wheel, which has the advantages of simple structure, small size, low manufacturing cost, good heat dissipation performance, convenient replacement of traction wheel and application in inner and outer rotor traction machine.

[0006] This utility model is implemented as follows: it includes a motor housing, a stator and a rotor disposed within the motor housing, a rotating shaft driven by the rotor and rotatably disposed within the motor housing, and a traction sheave. The traction sheave is fixed on the rotating shaft extending out of the motor housing. The traction sheave is characterized by including a support sleeve, an outer ring with rope grooves on its outer surface, and several fan blades. The fan blades are evenly distributed around the axis of the rotating shaft and connected between the support sleeve and the outer ring. The angle between the fan surface of the fan blades and the axis of the rotating shaft is an acute angle. The front side wall of the motor housing facing the traction sheave is provided with air guide holes, and the motor housing is provided with ventilation openings located in other parts of the motor housing except for the front side wall. The fan blades, air guide holes, stator, and ventilation openings on the traction sheave constitute a cooling air duct.

[0007] During operation, the rotor rotates along the stator axis, driving the shaft to rotate. The shaft then drives the traction sheave to rotate, which in turn moves the traction rope wound around the sheave. This allows the elevator car to move up and down via the traction rope. Simultaneously, the rotation of the traction sheave causes the fan blades on it to blow air. When the fan blades blow air towards the air guide holes, outside air enters the motor housing through the air guide holes. After flowing through the gaps between the stator coils and the rotor, the hot air is exhausted through the ventilation openings of the motor housing, carrying away the heat generated by the stator and rotor, thus reducing the stator temperature. When the fan blades blow air away from the air guide holes, a negative pressure is created in the air guide holes, drawing air out of the motor housing. Outside air is then introduced through the ventilation openings of the motor housing, flowing through the gaps between the stator coils, the rotor, and the stator, carrying away the heat generated by the stator and rotor, and finally exiting through the air guide holes, thereby reducing the stator temperature.

[0008] Because the traction sheave and fan blades are integrated into one unit, and the traction sheave does not need to be connected to the rotor as a whole, both the inner and outer rotor structures can use traction sheaves with fan blades. The traction sheave can be driven by a rotating shaft. When the traction sheave is damaged, it is convenient to replace and repair it. Moreover, the structure is simple, the size is small, and the manufacturing cost is low. The fan blade tilting structure has high fan efficiency and large air volume, which ensures the air volume required for heat dissipation.

[0009] Compared with existing technologies, this utility model has the advantages of simple structure, small size, low manufacturing cost, good heat dissipation performance, convenient replacement of traction sheave, and applicability to internal and external rotor traction machines. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the traction machine integrating the fan and traction sheave of this utility model;

[0011] Figure 2 This is an exploded view of Example 1;

[0012] Figure 3 for Figure 1 AA section view;

[0013] Figure 4 Figure 2 is a structural schematic diagram of a traction machine with a fan and a traction wheel integrated in one body according to the present application;

[0014] Figure 5 Figure 3 is a structural schematic diagram of a traction machine with a fan and a traction wheel integrated in one body according to the present application;

[0015] Figure 6 Figure 4 is a structural schematic diagram of a traction machine with a fan and a traction wheel integrated in one body according to the present application;

[0016] Figure 7 Figure 5 is a perspective view of the traction wheel.

[0017] Label explanation: 1 - motor casing; 101 - motor foot; 102 - first base; 103 - first front end cover; 104 - stator fixing ring; 105 - second base; 106 - first rear end cover; 107 - third base; 108 - second front end cover; 109 - fourth base; 110 - second rear end cover; 2 - stator; 3 - rotor; 4 - rotating shaft; 5 - traction wheel; 501 - support sleeve; 502 - rope groove; 503 - outer ring; 504 - fan blade; 505 - back middle part; 6 - air guide hole; 7 - ventilation opening; 8 - front bearing seat; 9 - rear bearing seat; 10 - bearing; 11 - air guide plate; 12 - slit air port; 13 - air guide cover; 1301 - cover opening; 14 - connecting piece; 1401 - fixing ring; 15 - air hole. DETAILED DESCRIPTION

[0018] The traction machine with a fan and a traction wheel integrated in one body according to the present application will be described in further detail in combination with the drawings and embodiments:

[0019] Embodiment one: as shown in Fig. 1, the traction machine with a fan and a traction wheel integrated in one body according to the present application comprises a motor casing 1 with a motor foot 101, a stator 2 and a rotor 3 arranged in the motor casing 1, a rotating shaft 4 driven by the rotor 3 and arranged in the motor casing 1, and a traction wheel 5 fixed on the rotating shaft 4 which penetrates out of the motor casing 1. Figure 1 Figure 1 , 2 As shown in Fig. 1, the traction wheel 5 comprises a support sleeve 501, an outer ring 503 with a rope groove 502 arranged on the outer surface, and a plurality of fan blades 504, the fan blades 504 are uniformly distributed around the rotating shaft axis D and connected between the support sleeve 501 and the outer ring 502, the included angle between the fan surface of the fan blade 504 and the rotating shaft axis D is an acute angle, the side wall of the motor casing 1 facing the traction wheel 5 is provided with an air guide hole 6, and the motor casing 1 is provided with a ventilation opening 7.

[0020] ​Preferably, the front end and the rear end of the motor housing 1 are respectively provided with front bearing seat 8 and rear bearing seat 9, the rotating shaft 4 is rotatably arranged on the bearing 10 of the front bearing seat 8 and the rear bearing seat 9, the front bearing seat 8 protrudes from the front end surface of the motor housing 1, and the middle part 505 of the back surface of the traction wheel 5 is concave, so that the front end of the front bearing seat 8 extends into the concave middle part 505 of the back surface of the traction wheel 5, and the outer edge of the side surface of the traction wheel 5 is close to the front end of the motor housing 1 with only a small gap, so that the air blown by the fan blade 504 of the traction wheel 5 cannot spread from the gap between the traction wheel 5 and the front end of the motor housing 1 to the outside of the motor, but flows accurately to the air guide hole 6 which is seamlessly connected to the air guide hole 6, so that the cooling air flows smoothly through the air guide hole 6.

[0021] By protruding the front bearing seat 8 from the front end surface of the motor housing 1, the setting of the front bearing seat 8 is avoided to interfere with the stator 2, so that the motor housing 1 is narrow, the motor housing 1 is thin, the installation space is small, and the stator 2 can be reliably installed, so that the whole traction machine is narrow and small in size.

[0022] Preferably, the outer end surface of the traction wheel 5 is provided with an air guide plate 11, and a slotted air port 12 is arranged along the circumferential surface of the air guide plate 11. By using the slotted air port 12, large external objects can be effectively blocked from being sucked into the stator 2 by the fan.

[0023] Preferably, the slotted air port 12 is distributed in a radial state with the center of the air guide plate 11 as the center, the outer surface of the slotted air port 12 is provided with an air guide cover 13, and the cover opening 1301 of the air guide cover 13 is perpendicular to the rotating direction of the traction wheel 5, so as to facilitate the air in and out. When the fan blade 504 fans the air to the air guide hole 6, the cover opening 1301 of the air guide cover 13 faces the wind, so as to inject the air into the slotted air port 12. When the fan blade 504 fans the air out of the traction wheel 5, the air flows from the stator 2 to the outside of the air guide hole, and the cover opening 1301 of the air guide cover 13 faces away from the wind, so as to flow the air out of the slotted air port 12.

[0024] Preferably, the motor housing 1 comprises a first base 102 provided with the rear bearing seat 9 and a first front end cover 103 provided with the air guide hole 6, the front end of the first base 102 is open, the motor foot 101 is arranged on the bottom of the first base 102, the front bearing seat 8 is arranged on the first front end cover 103, the first front end cover 103 is fixed on the open front end of the first base 102 by bolts, the back surface of the first front end cover 103 is provided with a stator fixing ring 104, the stator 2 is fixed on the stator fixing ring 104, the rotating shaft 4 passing through the stator fixing ring 104 is rotatably connected to the bearings of the front bearing seat 8 and the rear bearing seat 9, the rotor 3 is an outer rotor and is fixedly connected to the rear end of the rotating shaft 4 in front of the rear bearing seat 9 through a circular plate-shaped connecting piece 14 provided with a fixing ring 1401 fixed on the rotating shaft 4, the circular plate-shaped connecting piece 14 is provided with a plurality of air holes 15, and the fan blade 504 on the traction wheel 5, the air guide hole 6, the stator 2, the air hole 15 and the air vent 7 constitute a cooling air duct.

[0025] The rotor 3 drives the shaft 4 to rotate, and the shaft 4 drives the traction wheel 5 to rotate. The fan blades 504 on the traction wheel 5 drive the cooling airflow through the stator 2. The fan blades 504 on the traction wheel 5, the air guide hole 6, the stator 2, the air hole 15, and the ventilation port 7 constitute a cooling air duct, which discharges the heat energy emitted by the stator 2 to the outside of the motor housing 1 to ensure the normal operation of the traction machine.

[0026] Ventilation opening 7 is located at one or more on the periphery wall and back wall of the first base 102.

[0027] Example 2: Figure 4 As shown, this embodiment is based on embodiment one. The motor housing 1 includes a second base 105 with a front bearing seat 8 and an air guide hole 6, and a first rear end cover 106 with a rear bearing seat 9. The rear end of the second base 105 is open. The motor foot 101 is set at the bottom of the second base 105. The first rear end cover 106 is fixed to the open rear end of the second base 105 by bolts. A stator fixing ring 104 is provided at the rear of the second base 105. The stator 2 is fixed on the stator fixing ring 104. The rotating shaft 4 passing through the stator fixing ring 104 is rotatably connected to the bearings of the front bearing seat 8 and the rear bearing seat 9. The rotor 3 is an outer rotor and is fixedly connected to the rear end of the rotating shaft 4 in front of the rear bearing seat 9 by a circular plate-shaped connector 14 with a fixing ring 1401 fixed on the rotating shaft 4. The circular plate-shaped connector 14 is provided with several air holes 15. The fan blade 504 on the traction wheel 5, the air guide hole 6, the stator 2, the air holes 15, and the ventilation opening 7 constitute a cooling air duct.

[0028] Example 3: Figure 5 As shown, the motor housing 1 includes a third base 107 with a rear bearing seat 9 and a second front end cover 108 with an air guide hole 6. The front end of the third base 107 is open. The motor foot 101 is set at the bottom of the third base 107. The front bearing seat 8 is set on the second front end cover 108. The second front end cover 108 is fixed to the front end open of the third base 107 by bolts. The annular stator 2 is fixed on the annular inner wall of the third base 107. The rotating shaft 4 passes through the annular stator 2 and is rotatably connected to the bearings of the front bearing seat 8 and the rear bearing seat 9. The rotor 3 located inside the annular stator 2 is the inner rotor and is fixed on the rotating shaft 4. The fan blades 504 on the traction wheel 5, the air guide hole 6, the stator 2, and the ventilation opening 7 constitute a cooling air duct.

[0029] Example 4: Figure 6As shown, the motor housing 1 comprises a fourth base 109 with a front bearing seat 8, a second rear end cover 110 with a rear bearing seat 9, the fourth base 109 is open at the rear end, the motor foot 101 is arranged at the bottom of the fourth base 109, the second rear end cover 110 is fixed on the open rear end of the fourth base 109 by bolts, the circular ring-shaped stator 2 is fixed on the annular inner wall of the fourth base 109, the rotating shaft 4 is rotatably connected to the bearings of the front bearing seat 8 and the rear bearing seat 9 after passing through the circular ring-shaped stator 2, the rotor 3 located in the circular ring-shaped stator 2 is an inner rotor and is fixed on the rotating shaft 4, the fan blades 504 on the traction sheave 5, the air guide holes 6, the stator 2, and the ventilation openings 7 form a cooling air duct.

Claims

1. A traction machine integrating a fan and a traction sheave, comprising a motor housing, a stator and a rotor disposed within the motor housing, a rotating shaft rotatably disposed within the motor housing and driven by the rotor, and a traction sheave, the traction sheave being fixed to the rotating shaft extending outside the motor housing, characterized in that, The traction wheel comprises a support sleeve, an outer ring with a rope groove on the outer surface, and a plurality of fan blades evenly distributed around the rotation shaft axis and connected between the support sleeve and the outer ring. The angle between the fan surface of the fan blade and the rotation shaft axis is an acute angle. The front end side wall of the motor housing facing the traction wheel is provided with an air guide hole. The motor housing is provided with a ventilation opening. The ventilation opening is located at any part of the motor housing except the front end side wall. The fan blade on the traction wheel, the air guide hole, the stator, and the ventilation opening form a cooling air duct.

2. The fan and sheave integrated sheave machine of claim 1, wherein, The front end and the rear end of the motor housing are respectively provided with a front bearing seat and a rear bearing seat. The rotation shaft is rotatably arranged on the bearings of the front bearing seat and the rear bearing seat.

3. The fan and sheave integrated sheave machine of claim 2, wherein, The motor housing comprises a first housing with a rear bearing seat, a first front cover with an air guide hole and a front bearing seat. The front end of the first housing is open. The first front cover is fixed on the open front end of the first housing. The back of the first front cover is provided with a stator fixing ring. The stator is fixed on the stator fixing ring. The rotation shaft passing through the stator fixing ring is rotatably connected to the bearings of the front bearing seat and the rear bearing seat. The rotor is an outer rotor and is fixedly connected to the rear end of the rotation shaft in front of the rear bearing seat through a connecting piece with a fixing ring fixed on the rotation shaft. The connecting piece is provided with a plurality of air holes. The fan blade on the traction wheel, the air guide hole, the stator, the air hole, and the ventilation opening form a cooling air duct.

4. The fan and sheave integrated sheave machine of claim 2, wherein, The motor housing comprises a second housing with a front bearing seat and an air guide hole, and a first rear cover with a rear bearing seat. The rear end of the second housing is open. The first rear cover is fixed on the open rear end of the second housing. The rear part of the second housing is provided with a stator fixing ring. The stator is fixed on the stator fixing ring. The rotation shaft passing through the stator fixing ring is rotatably connected to the bearings of the front bearing seat and the rear bearing seat. The rotor is an outer rotor and is fixedly connected to the rear end of the rotation shaft in front of the rear bearing seat through a connecting piece with a fixing ring fixed on the rotation shaft. The connecting piece is provided with a plurality of air holes. The fan blade on the traction wheel, the air guide hole, the stator, the air hole, and the ventilation opening form a cooling air duct.

5. The fan and sheave integrated sheave machine of claim 2, wherein, The motor housing comprises a third housing with a rear bearing seat, a second front cover with an air guide hole and a front bearing seat. The front end of the third housing is open. The second front cover is fixed on the open front end of the third housing. The stator is fixed on the annular inner wall of the third housing. The rotation shaft passing through the stator is rotatably connected to the bearings of the front bearing seat and the rear bearing seat. The rotor located in the stator is an inner rotor and is fixed on the rotation shaft.

6. The fan and sheave integrated sheave machine of claim 2, wherein, The motor housing comprises a fourth housing with a front bearing seat, and a second rear cover with a rear bearing seat. The rear end of the fourth housing is open. The second rear cover is fixed on the open rear end of the fourth housing. The stator is fixed on the annular inner wall of the fourth housing. The rotation shaft passing through the stator is rotatably connected to the bearings of the front bearing seat and the rear bearing seat. The rotor located in the stator is an inner rotor and is fixed on the rotation shaft.

7. The fan and sheave integrated sheave of claim 2 or 3 or 4 or 5 or 6, wherein, The front bearing seat protrudes from the front end surface of the motor housing. Correspondingly, the middle part of the back surface of the traction wheel is concave, so that the front end of the front bearing seat extends into the concave middle part of the back surface of the traction wheel. The outer edge of the back surface of the traction wheel is close to the front end of the motor housing, so that the fan blade of the traction wheel blows the air to the air guide hole in a seamless manner, so that the cooling air flows smoothly through the air guide hole, and the outside air does not penetrate into the gap between the traction wheel and the front end of the motor housing to interfere with the smooth flow of the cooling air.

8. The traction machine of claims 1, 2, 3, 4, 5, or 6, wherein, The outer end surface of the traction sheave is provided with a wind deflector, and the peripheral surface of the wind deflector is provided with a slit air port.

9. The fan and sheave integrated sheave machine of claim 8, wherein, The slit air port is distributed in a radial state with the center of the wind deflector as the center, and the outer surface of the slit air port is provided with a wind deflector cover, and the cover opening of the wind deflector cover is perpendicular to the rotation direction of the traction sheave, so as to facilitate the entry and exit of wind.

10. The fan and sheave integrated sheave machine of claim 7, wherein, The outer end surface of the traction sheave is provided with a wind deflector, and the peripheral surface of the wind deflector is provided with a slit air port.

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