Traction machine stator and traction machine

Abstract

The utility model discloses a traction machine stator and a traction machine, which comprise a stator base, a stator iron core and a stator compression ring, the stator base and the stator iron core are partially in clearance fit in the radial direction, and the stator base and the stator compression ring are connected and fixed in the axial direction through a first fastening bolt. The stator pressing ring is in interference fit with part of the circumferential surface of the stator iron core in the radial direction, the stator pressing ring and the stator iron core are connected through a pin in the axial direction, the stator pressing ring and the stator iron core are further connected through a set screw in the axial direction, and the set screw adjusts a gap between the stator pressing ring and the stator iron core in the axial direction. Compared with the prior art, the stator base and the stator iron core are in clearance fit and are easy to assemble, the stator base and the stator iron core are positioned and fixed through the stator pressing ring, and when the stator iron core is pressed into the stator base, winding insulation on the stator iron core cannot be damaged.

Description

Technical Field

[0001] This utility model relates to the field of elevator equipment technology, specifically to a traction machine stator and traction machine used in elevators. Background Technology

[0002] Currently, elevator traction machines consist of a stator and a rotor. The stator frame and stator core are typically connected using an interference fit and key, while the rotor permanent magnets generally use skewed slot permanent magnets. This structure has the following disadvantages:

[0003] 1. Large-tonnage pressure equipment is required when pressing the stator core into the stator frame;

[0004] 2. During the process of pressing the stator core into the stator frame, the insulation of the stator winding may be damaged.

[0005] 3. During the process of pressing the stator core into the stator frame, it is not possible to visually check whether the key is aligned with the keyway.

[0006] 4. Inclined slot permanent magnets are prone to generating unidirectional axial forces. Utility Model Content

[0007] The purpose of this invention is to provide a traction machine stator that does not suffer damage to the stator insulation due to interference fit during installation.

[0008] The purpose of this utility model is achieved as follows.

[0009] A traction machine stator includes a stator base, a stator core, and a stator retaining ring. The stator base and stator core portions have a clearance fit in the radial direction. The stator base and stator retaining ring are connected and fixed in the axial direction by a first fastening bolt. The stator retaining ring and stator core portions have an interference fit in the radial direction. The stator retaining ring and stator core are connected in the axial direction by a pin. The stator retaining ring and stator core are also connected in the axial direction by a set screw. The set screw adjusts the clearance between the stator retaining ring and stator core in the axial direction.

[0010] Compared with the prior art, this utility model has a clearance fit between the stator frame and the stator core, making assembly easy. The stator frame and the stator core are positioned and fixed by the stator pressure ring. When the stator core is pressed into the stator frame, it will not damage the winding insulation on the stator core.

[0011] Furthermore, the stator frame is provided with a first outer circular surface that mates with the stator core, and the stator core is provided with a first inner circular surface that mates with the stator frame. The diameter of the first outer circular surface of the stator frame is smaller than the diameter of the first inner circular surface of the stator core, and the length of the first outer circular surface is smaller than the stacking thickness of the stator core. The stator frame and the stator core achieve the clearance fit through the first outer circular surface and the first inner circular surface.

[0012] The stator frame has a simple structure with the stator core, which makes it easy to achieve local clearance fit.

[0013] Furthermore, the stator pressure ring is provided with a second outer circular surface that mates with the stator core. The diameter of the first inner circular surface of the stator core is smaller than the diameter of the second outer circular surface of the stator pressure ring. The stator pressure ring and the second outer circular surface and the first inner circular surface of the stator core achieve the interference fit.

[0014] The stator pressure ring and stator core work together to achieve radial limiting.

[0015] Furthermore, the stator frame is provided with a first end face that mates with the stator pressure ring. The first end face is provided with a first fastening bolt hole that mates with the first fastening bolt. The sub-pressure ring is provided with a third end face that is opposite to the stator frame. The third end face is provided with a first fastening bolt through hole that mates with the first fastening bolt. The first fastening bolt passes through the first fastening bolt through hole and the first fastening bolt hole and is threadedly connected, so that the first end face and the third end face are tightly abutted against each other.

[0016] The stator pressure ring and stator frame have a simple installation structure. After being tightly connected by the first fastening bolt, they resist torque through friction. The stator core is indirectly radially limited to the stator frame through the stator pressure ring.

[0017] Furthermore, the stator core has a second end face opposite to the stator pressure ring. The second end face has a first pin hole along the axial direction of the stator core that mates with a pin. The stator pressure ring has a fourth end face opposite to the stator core. The fourth end face has a set screw through hole along the axial direction of the stator pressure ring that mates with a set screw and a second pin hole that mates with a pin. The length of the first pin hole is greater than the stack thickness of the stator core, and the length of the pin is greater than the stack thickness of the stator core. The inner end of the pin is inserted into the first pin hole, and the outer end of the pin is inserted into the second pin hole. The set screw passes through the set screw through hole and abuts against the second end face, leaving the gap between the second end face and the fourth end face.

[0018] The stator core and stator pressure ring are assembled by pins to resist shearing forces.

[0019] Furthermore, the stator pressure ring is provided with a pin observation hole coaxial with the second pin hole. The diameter of the pin observation hole is smaller than that of the second pin hole, and the diameter of the pin is larger than that of the pin observation hole. The outer end of the pin abuts against or is close to the platform formed by the second pin hole and the pin observation hole.

[0020] The pin inspection hole makes it easy to check whether the pin and the second pin hole are properly assembled.

[0021] Furthermore, the stator frame is provided with a guide portion on the first outer circular surface for guiding the installation of the stator core. The guide portion includes a third outer circular surface and a guide slope on the stator frame. The diameter of the third outer circular surface is smaller than the diameter of the first outer circular surface. One end of the third outer circular surface and the first outer circular surface are connected by the guide slope, and the other end of the third outer circular surface and the first end face are connected by a chamfer.

[0022] The guide section guides the stator core to be installed on the stator frame. The guide section has a simple and reasonable structure and is easy to manufacture.

[0023] A traction machine includes the aforementioned traction machine stator.

[0024] Compared with existing technologies, the manufacturing of traction machines does not require the use of large-tonnage pressure equipment, resulting in lower manufacturing costs.

[0025] Furthermore, it also includes a traction machine rotor, which includes V-shaped permanent magnets mounted on the hub.

[0026] V-shaped permanent magnets will not cause unidirectional axial force to the traction machine rotor.

[0027] Furthermore, the traction machine rotor includes a pressure plate and a second fastening bolt. Adjacent V-shaped permanent magnets are separated by a V-shaped pressure plate. The pressure plate is provided with a second fastening bolt hole, and the hub is provided with a second fastening bolt through hole that mates with the second fastening bolt hole. The second fastening bolt passes through the second fastening bolt through hole and the second fastening bolt hole and is threadedly connected.

[0028] V-shaped permanent magnets are simple and easy to install.

[0029] Compared with existing technologies, this invention features a clearance fit between the stator frame and the stator core, facilitating assembly. The stator frame and stator core are positioned and fixed by a stator clamping ring. Pressing the stator core into the stator frame does not damage the winding insulation on the stator core. The axial clearance between the stator core and the stator clamping ring is adjusted using set screws. The stator core and stator clamping ring are assembled using pins, and the pin inspection hole allows for easy inspection of whether the pin and the second pin hole are properly aligned. The V-shaped permanent magnet prevents the traction machine rotor from generating unidirectional axial force. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the stator structure of the traction machine in Example 1.

[0031] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0032] Figure 3 for Figure 2 Enlarged schematic diagram of section B in the middle.

[0033] Figure 4 for Figure 2 Enlarged schematic diagram of section C.

[0034] Figure 5 This is a schematic diagram of the stator frame in Embodiment 1.

[0035] Figure 6 This is a schematic cross-sectional view of the stator frame in Example 1.

[0036] Figure 7 for Figure 6 Enlarged schematic diagram of section D in the middle.

[0037] Figure 8 This is a schematic diagram of the axial structure of the stator core in Example 1.

[0038] Figure 9 This is a schematic diagram of the radial structure of the stator core in Example 1.

[0039] Figure 10 This is a schematic diagram of the stator pressure ring in Example 1.

[0040] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure of the EE.

[0041] Figure 12 This is a schematic cross-sectional view of the traction machine rotor in Example 1.

[0042] Figure 13 This is a schematic diagram of the cross-sectional structure of the V-shaped permanent magnet and the pressure plate after assembly in Example 1.

[0043] Figure 14 This is a schematic diagram of the V-shaped permanent magnet and pressure plate in Example 1. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0045] Example 1, see Figure 1-11 As shown, a traction machine stator includes a stator base 1, a stator core 2, a stator pressure ring 3, a pin 4, a first fastening bolt 5, and a set screw 6.

[0046] The stator frame 1 has a first outer circular surface 11 that mates with the stator core 2, a first end face 12 that mates with the stator pressure ring 3, and a fifth end face 17 that mates with the stator core 2. The first outer circular surface 11 is located between the fifth end face 17 and the first end face 12. The diameter of the first outer circular surface 11 is smaller than the diameter of the first inner circular surface of the stator core 2, and the length L1 of the first outer circular surface 11 is smaller than the stacking thickness L2 of the stator core 2. The stator frame 1 has a guide portion 13 on the first outer circular surface 11 for guiding the installation of the stator core 2, and a first fastening bolt hole 14 on the first end face 12 for mates with the first fastening bolt 5. The guide portion 13 includes a third outer circular surface 15 and a guide slope 16 disposed on the stator base 1. The diameter of the third outer circular surface 15 is smaller than the diameter of the first outer circular surface 11. One end of the third outer circular surface 15 and the first outer circular surface 11 are connected by the guide slope 16, and the other end of the third outer circular surface 15 and the first end face 12 are connected by a chamfer.

[0047] The stator core 2 has a first inner circular surface 21 that mates with the stator base 1 and a second end surface 22 that is opposite to the stator pressure ring 3. The diameter of the first inner circular surface 21 of the stator core 2 is smaller than the diameter of the second outer circular surface 31 of the stator pressure ring 3. The stator core 2 has a first pin hole 23 that mates with the pin 4. The length of the first pin hole 23 is greater than the thickness of the stator core 2, that is, the first pin hole 23 penetrates the stator core 2. The length of the pin 4 is greater than the thickness of the stator core 2.

[0048] The stator pressure ring 3 has a second outer circular surface 31 that mates with the stator core 2, a third end surface 32 that is opposite to the stator base 1, and a fourth end surface 33 that is opposite to the stator core 2. The third end surface 32 of the stator pressure ring 3 has a first fastening bolt through hole 34 that mates with the first fastening bolt 5, and the fourth end surface 33 has a set screw through hole 35 that mates with the set screw 6 and a second pin hole 36 that mates with the pin 4. The set screw 6 passes through the set screw through hole 35 and abuts against the second end surface 22. The stator pressure ring 3 has a pin observation hole 37 that is coaxial with the second pin hole 36. The diameter of the pin observation hole 37 is smaller than that of the second pin hole 36, and the diameter of the pin 4 is larger than that of the pin observation hole 37.

[0049] The stator core 2 is pressed into the stator housing 1 through the guide portion 13, meaning the stator housing 1 and the stator core 2 are fitted with a clearance through the first outer circular surface 11 and the first inner circular surface 21. The stator core 2 abuts against the fifth end face 17. The pin 4 is pressed into the first pin hole 23 of the stator core 2, with the inner end of the pin 4 placed inside the first pin hole 23 and the outer end of the pin 4 remaining outside the first pin hole 23. The stator pressure ring 3 is pressed into the stator housing 1, with the stator housing 1 and the stator pressure ring 3 abutting against each other through the first end face 12 and the third end face 32. The second outer circular surface 31 and the first inner circular surface 21 are interference-fitted, the second pin hole 36 and the first pin hole 23 are aligned, and the outer end of the pin 4 is inserted into the second pin hole 36, abutting against or near the platform formed by the second pin hole 36 and the pin observation hole 37. The first fastening bolt hole 14 and the first fastening bolt through hole 34 are aligned. The first fastening bolt 5 passes through the first fastening bolt through hole 34 and the first fastening bolt hole 14 and is threaded together to connect the stator base 1 and the stator pressure ring 3. The set screw 6 is threaded to the set screw through hole 35. By adjusting the set screw 6, the stator core 2 is axially positioned so that a gap 100 is left between the second end face 22 and the fourth end face 33.

[0050] This utility model also discloses a traction machine, including the aforementioned traction machine stator.

[0051] See Figure 12-14 As shown, the traction machine also includes a traction machine rotor, which includes a V-shaped permanent magnet 8, a pressure plate 9, and a second fastening bolt 10 mounted on the hub 7. Adjacent V-shaped permanent magnets 8 are separated by V-shaped pressure plates 9. The pressure plates 9 are provided with second fastening bolt holes 91, and the hub 7 is provided with second fastening bolt through holes 71 that mate with the second fastening bolt holes 91. The second fastening bolt 10 passes through the second fastening bolt through holes 71 and the second fastening bolt holes 91 and is threadedly connected.

[0052] The V-shaped permanent magnet 8 generates two opposing forces, F1 and F2, which cancel each other out, thereby eliminating the unidirectional axial force.

[0053] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0054] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0055] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0056] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A traction machine stator, comprising a stator frame and a stator core, characterized in that, It also includes a stator pressure ring, a stator frame and a stator core portion with a clearance fit in the radial direction, a stator frame and a stator pressure ring connected and fixed in the axial direction by a first fastening bolt, a stator pressure ring and a stator core portion with an interference fit in the radial direction, a stator pressure ring and a stator core portion connected in the axial direction by a pin, and a stator pressure ring and a stator core also connected in the axial direction by a set screw, the set screw adjusting the gap between the stator pressure ring and the stator core in the axial direction.

2. The traction machine stator according to claim 1, characterized in that, The stator frame has a first outer circular surface that mates with the stator core, and the stator core has a first inner circular surface that mates with the stator frame. The diameter of the first outer circular surface of the stator frame is smaller than the diameter of the first inner circular surface of the stator core, and the length of the first outer circular surface is smaller than the stacking thickness of the stator core. The stator frame and the stator core achieve the clearance fit through the first outer circular surface and the first inner circular surface.

3. The traction machine stator according to claim 2, characterized in that, The stator pressure ring has a second outer circular surface that mates with the stator core. The diameter of the first inner circular surface of the stator core is smaller than the diameter of the second outer circular surface of the stator pressure ring. The stator pressure ring and the second outer circular surface and the first inner circular surface of the stator core achieve the interference fit.

4. The traction machine stator according to claim 1, characterized in that, The stator base has a first end face that mates with the stator pressure ring. The first end face has a first fastening bolt hole that mates with the first fastening bolt. The sub-pressure ring has a third end face that is opposite to the stator base. The third end face has a first fastening bolt through hole that mates with the first fastening bolt. The first fastening bolt passes through the first fastening bolt through hole and the first fastening bolt hole and is threaded together, so that the first end face and the third end face are tightly pressed against each other.

5. The traction machine stator according to claim 1, characterized in that, The stator core has a second end face opposite to the stator pressure ring. The second end face has a first pin hole along the axial direction of the stator core that mates with a pin. The stator pressure ring has a fourth end face opposite to the stator core. The fourth end face has a set screw through hole along the axial direction of the stator pressure ring that mates with a set screw and a second pin hole that mates with a pin. The length of the first pin hole is greater than the stack thickness of the stator core. The length of the pin is greater than the stack thickness of the stator core. The inner end of the pin is inserted into the first pin hole, and the outer end of the pin is inserted into the second pin hole. The set screw passes through the set screw through hole and abuts against the second end face, leaving the gap between the second end face and the fourth end face.

6. The traction machine stator according to claim 5, characterized in that, The stator pressure ring is provided with a pin observation hole coaxial with the second pin hole. The diameter of the pin observation hole is smaller than that of the second pin hole, and the diameter of the pin is larger than that of the pin observation hole. The outer end of the pin abuts against or is close to the platform formed by the second pin hole and the pin observation hole.

7. The traction machine stator according to claim 1, characterized in that, The stator frame has a guide portion on the first outer circular surface for guiding the installation of the stator core. The guide portion includes a third outer circular surface and a guide slope on the stator frame. The diameter of the third outer circular surface is smaller than the diameter of the first outer circular surface. One end of the third outer circular surface and the first outer circular surface are connected by the guide slope, and the other end of the third outer circular surface and the first end face are connected by a chamfer.

8. A traction machine, characterized in that, Includes the traction machine stator as described in any one of claims 1-7.

9. The traction machine according to claim 8, characterized in that, It also includes a traction machine rotor, which includes a V-shaped permanent magnet mounted on the hub.

10. The traction machine according to claim 9, characterized in that, The traction machine rotor includes a pressure plate and a second fastening bolt. Adjacent V-shaped permanent magnets are separated by a V-shaped pressure plate. The pressure plate is provided with a second fastening bolt hole. The hub is provided with a second fastening bolt through hole that mates with the second fastening bolt hole. The second fastening bolt passes through the second fastening bolt through hole and the second fastening bolt hole and is threadedly connected.

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