Stator core, traction machine and elevator

Abstract

The present invention relates to a stator core, a traction machine and an elevator. The stator core comprises: a core body, the core body comprises at least two single teeth spliced ​​to each other, the single tooth comprises a splicing portion, the splicing portion comprises a first side and a second side opposite to the first side, the first side is provided with a positioning groove, and the second side is provided with a positioning convex; wherein, two adjacent single teeth comprise a first single tooth and a second single tooth, and the positioning convex on the first single tooth is engaged with the positioning groove on the second single tooth. The traction machine comprises the stator core as described above. The elevator comprises the traction machine as described above. When two adjacent single teeth in the stator core are connected, the positioning convex on the first single tooth is engaged with the positioning groove on the second single tooth, which simplifies the operation, improves the reliability of the connection between adjacent single-tooth cores, and reduces safety hazards, compared with gluing two adjacent single teeth together.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a stator core, a traction machine and an elevator. Background Art

[0002] Permanent magnet synchronous elevator traction machine (hereinafter referred to as traction machine) is the mainstream product of elevator traction machine. The stator core punching sheets of traditional traction machines are all annular integral stator punching sheets, which are processed by rectangular sheets. After the stator punching sheets are processed, the four corners of each rectangular sheet and the middle disc part become waste, and the material utilization rate is low.

[0003] At present, in order to solve the problem of low material utilization, some manufacturers have proposed a solution of dividing the integral stator into at least two single-tooth iron cores, and then bonding the at least two single-tooth iron cores by glue to form an annular stator. This solution uses glue to bond at least two single-tooth iron cores, which is complicated to operate, and the connection between the at least two single-tooth iron cores is not reliable, posing a safety hazard. Summary of the invention

[0004] Based on this, it is necessary to provide a stator core, a traction machine and an elevator, which are convenient for simplifying the operation, improving the reliability of the connection between at least two single-tooth cores, and reducing safety hazards.

[0005] The technical solution is as follows:

[0006] A stator core comprises: a core body, the core body comprises at least two single teeth spliced ​​to each other, the single tooth comprises a splicing portion, the splicing portion comprises a first side and a second side opposite to the first side, the first side is provided with a positioning groove, and the second side is provided with a positioning protrusion; wherein two adjacent single teeth comprise a first single tooth and a second single tooth, and the positioning protrusion on the first single tooth is engaged in the positioning groove on the second single tooth.

[0007] When two adjacent single teeth in the above-mentioned stator core are connected, the positioning protrusion on the first single tooth is engaged in the positioning groove on the second single tooth, and the positioning protrusion of the first single tooth is fixedly matched with the groove wall of the positioning groove of the second single tooth. Since the two adjacent single teeth are connected together by snapping, compared with the two adjacent single teeth being bonded together by glue, the operation is simplified, the reliability of the connection between adjacent single-tooth cores is improved, and the safety hazard is reduced.

[0008] The technical solution is further described below:

[0009] Furthermore, the stator core also includes a positioning piece, the positioning protrusion is provided with a first positioning wall, and the slot wall of the positioning slot is provided with a second positioning wall; wherein the first positioning wall on the first single tooth and the second positioning wall on the second single tooth cooperate to form a positioning hole, the positioning piece abuts against the hole wall of the positioning hole, and the positioning protrusion on the first single tooth and the slot wall of the positioning slot on the second single tooth are tightly matched.

[0010] Furthermore, the first positioning wall and the second positioning wall are both semicircular.

[0011] Furthermore, the first positioning wall on the first single tooth and the second positioning wall on the second single tooth are staggered along the circumferential direction of the core body.

[0012] Further, the positioning protrusion includes a first side wall, and a second side wall and a third side wall respectively connected to both sides of the first side wall, and the positioning groove includes a first groove wall, and a second groove wall and a third groove wall respectively connected to both sides of the first groove wall; wherein, the first side wall on the first single tooth is limitedly matched with the first groove wall on the second single tooth, the second side wall on the first single tooth is limitedly matched with the second groove wall on the second single tooth, and the third side wall on the first single tooth is limitedly matched with the third groove wall on the second single tooth.

[0013] Furthermore, the single tooth further includes a limiting portion and a winding portion, one end of the winding portion is connected to the limiting portion, and the other end is connected to the splicing portion.

[0014] Furthermore, the stator core also includes a connecting plate and at least two fasteners, the connecting plate is provided with at least two first assembly holes arranged at intervals, and the splicing portion is also provided with a second assembly hole, at least two of the fasteners, at least two of the first assembly holes, and at least two of the second assembly holes on the single teeth correspond one to one, and the fasteners are inserted into the first assembly holes and the second assembly holes.

[0015] Furthermore, the stator core also includes at least two winding bobbins, and at least two of the winding bobbins correspond one-to-one to at least two of the single teeth, the winding bobbins include a first bobbin and a second bobbin, the winding portion includes a third side and a fourth side opposite to the third side, the first bobbin is arranged on the third side, and the second bobbin is arranged on the fourth side.

[0016] The technical solution also provides a traction machine, comprising the stator core as described above.

[0017] When two adjacent single teeth in the stator core of the above-mentioned traction machine are connected, the positioning protrusion on the first single tooth is engaged in the positioning groove on the second single tooth, and the positioning protrusion of the first single tooth is fixedly matched with the groove wall of the positioning groove of the second single tooth. Since the two adjacent single teeth are connected together by snapping, compared with the two adjacent single teeth being glued together by glue, the operation is simplified, the reliability of the connection between the adjacent single-tooth cores is improved, and the safety hazard is reduced.

[0018] The technical solution also provides an elevator, comprising the traction machine as described above.

[0019] When two adjacent single teeth in the stator core of the above-mentioned elevator are connected, the positioning protrusion on the first single tooth is engaged with the positioning groove on the second single tooth, and the positioning protrusion of the first single tooth is fixedly matched with the groove wall of the positioning groove of the second single tooth. Since the two adjacent single teeth are connected together by snapping, compared with the two adjacent single teeth being bonded together by glue, the reliability of the connection between the adjacent single-tooth cores is improved and the safety hazard is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a stator core according to an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the core body of the stator core according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic structural diagram of a single tooth of a stator core according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of a single-tooth punching sheet of a stator core according to an embodiment of the present invention;

[0024] Figure 5 The schematic diagram of the partial structure of the stator core body according to one embodiment of the present invention is Figure 1 ;

[0025] Figure 6 The schematic diagram of the partial structure of the stator core body according to one embodiment of the present invention is Figure 2 .

[0026] Description of reference numerals:

[0027] 10. enameled wire, 100. core body, 110. single tooth, 120. winding part, 130. splicing part, 131. first side, 132. second side, 140. positioning groove, 141. second positioning wall, 142. first groove wall, 143. second groove wall, 144. third groove wall, 150. positioning protrusion, 151. first positioning wall, 152. first side wall, 153. second side wall, 154. third side wall, 160. positioning hole, 170. limiting part, 180. second assembly hole, 200. fastener, 300. connecting plate, 410. first skeleton, 420. second skeleton. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or at least two related listed items.

[0031] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0032] like Figure 1-3 As shown, a stator core described in an embodiment includes: a core body 100, the core body 100 includes at least two single teeth 110 spliced ​​to each other, the single tooth 110 includes a splicing portion 130, and two adjacent single teeth 110 are spliced ​​together through the splicing portion 130 to form a ring-shaped core body 100.

[0033] like Figure 3As shown, the single tooth 110 includes a plurality of single tooth punching sheets, which are stacked to form the single tooth 110. The mold for making the single tooth punching sheet is simple and low-cost. When making the single tooth punching sheet, compared with preparing annular integral stator punching sheets with rectangular sheets, it can effectively save materials.

[0034] like Figure 4-5 As shown, the splicing portion 130 of the single tooth 110 includes a first side 131 and a second side 132 opposite to the first side 131, the first side 131 is provided with a positioning groove 140, and the second side 132 is provided with a positioning protrusion 150; wherein, the two adjacent single teeth 110 include a first single tooth and a second single tooth, and the positioning protrusion 150 on the first single tooth is engaged in the positioning groove 140 on the second single tooth.

[0035] In one embodiment, the first side 131 and the second side 132 of the splicing portion 130 of the single tooth 110 are inclined, and the second side 132 of the first single tooth and the first side 131 of the second single tooth are in contact with each other. In this way, at least two single teeth 110 can form a ring shape when spliced, and after the at least two single teeth 110 are spliced, the first single tooth and the second single tooth can restrict each other from relative movement in the circumferential direction of the core body 100 because the second side 132 of the first single tooth and the first side 131 of the first single tooth are in contact with each other.

[0036] When two adjacent single teeth 110 in the above-mentioned stator core are connected, the positioning protrusion 150 on the first single tooth is engaged in the positioning groove 140 on the second single tooth, and the positioning protrusion 150 of the first single tooth is fixedly matched with the groove wall of the positioning groove 140 of the second single tooth. Since the two adjacent single teeth 110 are connected together by snapping, compared with the two adjacent single teeth 110 being bonded together by glue, the operation is simplified, the reliability of the connection between the adjacent single teeth 110 cores is improved, and the safety hazard is reduced.

[0037] Please continue reading Figure 4 and Figure 5 The stator core also includes a positioning member, the positioning protrusion 150 is provided with a first positioning wall 151, and the slot wall of the positioning groove 140 is provided with a second positioning wall 141; wherein, the first positioning wall 151 on the first single tooth and the second positioning wall 141 on the second single tooth cooperate to form a positioning hole 160, the positioning member abuts against the hole wall of the positioning hole 160, and the positioning protrusion 150 on the first single tooth and the slot wall of the positioning groove 140 on the second single tooth are tightly matched.

[0038] Optionally, the first positioning wall 151 and / or the second positioning wall 141 is in an arc shape, and when the positioning protrusion 150 of the first single tooth is disposed in the positioning groove 140 of the second single tooth, the first positioning wall 151 cooperates with the second positioning wall 141 to form a positioning hole 160 .

[0039] It should be noted that the positioning member is adapted to the positioning hole 160. Optionally, the positioning hole 160 is circular, and the cross section of the positioning member is also circular. When the positioning member is inserted into the positioning hole 160, the side wall of the positioning member can abut against the hole wall of the positioning hole 160, and the positioning protrusion 150 on the first single tooth will approach the groove wall of the positioning groove 140 on the second single tooth, and reduce the gap between the positioning protrusion 150 on the first single tooth and the groove wall of the positioning groove 140 on the second single tooth. In this way, the positioning protrusion 150 on the first single tooth and the groove wall of the positioning groove 140 on the second single tooth can be tightly matched to avoid loosening between the first single tooth and the second single tooth.

[0040] In one embodiment, the first positioning wall 151 and the second positioning wall 141 are both semicircular. The semicircular first positioning wall 151 and the second positioning wall 141 are easy to process in batches, and the shape of the positioning member can also be a cylindrical pin, which is a common component, simple to prepare, and low in cost.

[0041] Furthermore, the first positioning wall 151 on the first single tooth and the second positioning wall 141 on the second single tooth are staggered along the circumferential direction of the core body 100. Specifically, the center of the first positioning wall 151 is 0.2 mm to 0.3 mm away from the center of the second positioning wall 141, so that the first positioning wall 151 and the second positioning wall 141 can cooperate to form a non-circular positioning hole 160. When the positioning member is inserted into the positioning hole 160, the positioning protrusion 150 on the first single tooth and the groove wall of the positioning groove 140 on the second single tooth can be more tightly matched to avoid loosening between the first single tooth and the second single tooth.

[0042] In one embodiment, the positioning protrusion 150 includes a first side wall 152, and a second side wall 153 and a third side wall 154 respectively connected to the first side wall 152 on both sides, and the positioning groove 140 includes a first groove wall 142, and a second groove wall 143 and a third groove wall 144 respectively connected to the first groove wall 142 on both sides; wherein the first side wall 152 on the first single tooth is limitedly matched with the first groove wall 142 on the second single tooth, the second side wall 153 on the first single tooth is limitedly matched with the second groove wall 143 on the second single tooth, and the third side wall 154 on the first single tooth is limitedly matched with the third groove wall 144 on the second single tooth.

[0043] Specifically, the first side wall 152 is the left side wall on the positioning protrusion 150, and the first groove wall 142 is the left groove wall on the positioning groove 140. When the first side wall 152 on the first single tooth is limitedly matched with the first groove wall 142 on the second single tooth, the single tooth 110 can be positioned circumferentially in the core body 100, and the adjacent single teeth 110 can be restricted from relative movement in the circumferential direction of the core body 100.

[0044] More specifically, the second side wall 153 is the upper side wall on the positioning protrusion 150, the third side wall 154 is the lower side wall on the positioning protrusion 150, the second slot wall 143 is the upper slot wall of the positioning slot 140, and the third slot wall 144 is the lower slot wall of the positioning slot 140. When the second side wall 153 on the first single tooth is limitedly matched with the second slot wall 143 on the second single tooth, and the third side wall 154 on the first single tooth is limitedly matched with the third slot wall 144 on the second single tooth, the single tooth 110 can be positioned radially in the core body 100, and the adjacent single teeth 110 can be restricted from relative movement in the radial direction of the core body 100.

[0045] In one embodiment, the single tooth 110 further includes a stopper 170 and a winding portion 120 for mounting the enameled wire 10. Specifically, the splicing portion 130 is connected to one end of the stopper 170, the stopper 170 is connected to the other end of the winding portion 120, the winding portion 120 is a rectangular structure, the stopper 170 is a trapezoidal structure, and the short side of the stopper 170 is connected to the splicing portion 130. In this way, when the stator core is rotating, the enameled wire 10 can be prevented from being separated from the winding portion 120 due to centrifugal force.

[0046] In one embodiment, the stator core further comprises a connecting plate 300 and at least two fasteners 200, the connecting plate 300 is provided with at least two first assembly holes arranged at intervals, the splicing portion 130 is further provided with a second assembly hole 180, the at least two fasteners 200, the at least two first assembly holes, and the second assembly holes 180 on at least two single teeth 110 correspond to each other, and the fasteners 200 are inserted into the first assembly holes and the second assembly holes 180. In this way, a plurality of single teeth 110 can be fixed by the connecting plate 300. Optionally, the connecting plate 300 is annular, the first assembly hole is a through hole, the second assembly hole 180 is a threaded hole, and the fastener 200 is a screw; or the fastener 200 comprises a bolt and a nut, and the first assembly hole and the second assembly hole 180 are both through holes; or the fastener 200 is a pin, and the first assembly hole and the second assembly hole 180 are both through holes.

[0047] Furthermore, there are two connecting plates 300, one of which is fixedly connected to one side of the core body 100, and the other connecting plate 300 is fixedly connected to the other side of the core body 100, so that the fastening degree of each single tooth 110 in the core body 100 can be increased.

[0048] like Figure 6As shown, in one embodiment, the stator core further includes at least two winding bobbins, and the at least two winding bobbins correspond to at least two single teeth 110 one by one, the winding bobbins include a first bobbin 410 and a second bobbin 420, the winding portion 120 includes a third side and a fourth side opposite to the third side, the first bobbin 410 is disposed on the third side, and the second bobbin 420 is disposed on the fourth side. In this way, the enameled wire 10 can be wound on the winding bobbin, and the enameled wire 10 can be prevented from directly contacting the winding portion 120 and wearing the winding portion 120.

[0049] Furthermore, the arrangement direction of the third side and the fourth side is consistent with the axial direction of the core body 100, the first frame 410 is slidably disposed on the third side, and the second frame 420 is disposed on the fourth side. In this way, the first frame 410 can change the distance between the first frame 410 and the second frame 420 by sliding on the third side, thereby adjusting the size of the enameled wire 10 wound on the winding frame.

[0050] Furthermore, it also includes insulating paper, which is wrapped on the winding part 120 and fixed on the winding part 120 through the winding skeleton. In this way, the enameled wire 10 can be further prevented from contacting the winding part 120 through the gap on the winding skeleton and wearing the winding part 120.

[0051] When assembling the above-mentioned stator core, firstly, a plurality of single-tooth punching sheets are stacked to form a single tooth 110, and then a winding frame is installed on the single tooth 110, and then the enameled wire 10 is wound on the winding frame, and then at least two single teeth 110 are spliced ​​to form a circular core body 100, and finally the connection of the plurality of single teeth 110 is completed through the connecting plate 300. Compared with winding directly on the annular integral stator, when winding the above-mentioned stator core, the winding is first completed on the winding frame of the single tooth 110, and then at least two single teeth 110 are assembled, so that the winding slot formed by the winding part 120, the limiting part 170 and the splicing part 130 has a high slot filling rate, high winding efficiency, neat wire arrangement, good winding quality, and convenient automation.

[0052] An embodiment further provides a traction machine, comprising the stator core as described above.

[0053] When two adjacent single teeth 110 in the stator core of the above-mentioned traction machine are connected, the positioning protrusion 150 on the first single tooth is engaged in the positioning groove 140 on the second single tooth, and the positioning protrusion 150 of the first single tooth is fixedly matched with the groove wall of the positioning groove 140 of the second single tooth. Since the two adjacent single teeth 110 are connected together by snapping, compared with the two adjacent single teeth 110 being bonded together by glue, the operation is simplified, the reliability of the connection between the adjacent single teeth 110 cores is improved, and the safety hazard is reduced.

[0054] An embodiment further provides an elevator, comprising the traction machine as described above.

[0055] When two adjacent single teeth 110 in the stator core of the above-mentioned elevator are connected, the positioning protrusion 150 on the first single tooth is engaged in the positioning groove 140 on the second single tooth, and the positioning protrusion 150 of the first single tooth is fixedly matched with the groove wall of the positioning groove 140 of the second single tooth. Since the two adjacent single teeth 110 are connected together by snapping, compared with the two adjacent single teeth 110 being bonded together by glue, the operation is simplified, the reliability of the connection between the adjacent single teeth 110 cores is improved, and the safety hazard is reduced.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A stator core, characterized in that: include: An iron core body, the iron core body comprising at least two single teeth spliced ​​to each other, the single tooth comprising a splicing portion, the splicing portion comprising a first side and a second side opposite to the first side, the first side being provided with a positioning groove, and the second side being provided with a positioning protrusion; Wherein, the two adjacent single teeth include a first single tooth and a second single tooth, and the positioning protrusion on the first single tooth is buckled into the positioning groove on the second single tooth; The single tooth further includes a limiting portion and a winding portion, wherein one end of the winding portion is connected to the limiting portion, and the other end is connected to the splicing portion; The stator core also includes at least two winding bobbins, and at least two of the winding bobbins correspond one-to-one to at least two of the single teeth. Each of the winding bobbins includes a first bobbin and a second bobbin. The winding portion includes a third side and a fourth side opposite to the third side. The first bobbin is slidably disposed on the third side, and the second bobbin is disposed on the fourth side. The first bobbin changes the distance from the second bobbin by sliding on the third side.

2. The stator core according to claim 1, characterized in that: It also includes a positioning member, wherein the positioning projection is provided with a first positioning wall, and the groove wall of the positioning groove is provided with a second positioning wall; Wherein, the first positioning wall on the first single tooth cooperates with the second positioning wall on the second single tooth to form a positioning hole, the positioning piece abuts against the hole wall of the positioning hole, and the positioning protrusion on the first single tooth is tightly matched with the groove wall of the positioning groove on the second single tooth.

3. The stator core according to claim 2, characterized in that: The first positioning wall and the second positioning wall are both semicircular.

4. The stator core according to claim 3, characterized in that: The first positioning wall on the first single tooth and the second positioning wall on the second single tooth are staggered along the circumferential direction of the core body.

5. The stator core according to claim 1, characterized in that: The positioning protrusion includes a first side wall, and a second side wall and a third side wall respectively connected to both sides of the first side wall, and the positioning groove includes a first groove wall, and a second groove wall and a third groove wall respectively connected to both sides of the first groove wall; Among them, the first side wall on the first single tooth is limitedly matched with the first groove wall on the second single tooth, the second side wall on the first single tooth is limitedly matched with the second groove wall on the second single tooth, and the third side wall on the first single tooth is limitedly matched with the third groove wall on the second single tooth.

6. The stator core according to claim 1, characterized in that: It also includes a connecting plate and at least two fasteners, the connecting plate is provided with at least two first assembly holes arranged at intervals, the splicing portion is also provided with a second assembly hole, at least two of the fasteners, at least two of the first assembly holes, and at least two of the second assembly holes on the single teeth correspond one to one, and the fasteners are inserted into the first assembly holes and the second assembly holes.

7. The stator core according to claim 6, characterized in that: There are two connecting plates, one of which is fixedly connected to one side of the core body, and the other connecting plate is fixedly connected to the other side of the core body.

8. The stator core according to claim 1, characterized in that: It also includes insulating paper, which is wrapped on the winding part and fixed on the winding part through the winding frame.

9. A traction machine, characterized in that: It comprises the stator core as described in any one of claims 1 to 8.

10. An elevator, characterized in that: It comprises the traction machine as claimed in claim 9 above.

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