Spliced impact-resistant high-toughness rotor core

Abstract

The utility model provides a spliced anti -impact high toughness rotor core belongs to motor technical field to solve the problem that the rotor core of current adoption integral type structure, winding space is limited, inlaying is difficult, time and cost are high, and local damage needs overall replacement, maintenance cost is high. Including the core inner tube, tooth groove, bottom encapsulation ring, positioning ring, top encapsulation ring, splicing subassembly and limiting component, tooth groove is provided with multiple groups, and multiple tooth groove circumferential array is outside the core inner tube, bottom encapsulation ring fixed connection is established in the core inner tube bottom, positioning ring sets up in the core inner tube top, top encapsulation ring sets up in the positioning ring top, splicing subassembly sets up outside the core inner tube, limiting component sets up outside the core inner tube. The utility model has modularization replacement, maintenance simple, operation convenient and so on advantages.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and more specifically, it relates to a spliced ​​impact-resistant and high-toughness rotor core. Background Technology

[0002] The rotor is the core component of the motor, forming the core energy conversion system together with the stator. It consists of a rotor core and rotor windings. The rotor core is formed by axially stacking multiple rotor laminations, and the windings are embedded or wound in the core slots. To ensure structural stability during operation, the laminations must be fixed to form a complete assembly after stacking. To improve impact resistance and toughness, high-toughness silicon steel materials, such as high-magnetic-permeability silicon steel, are selected for the laminations. Combined with an insulating varnish bonding process, the stacked core has deformation buffering capacity, effectively dispersing stress, avoiding brittle fracture, and meeting the requirements for stable motor operation.

[0003] Existing application number CN201821453315.1 discloses a splicing type combined iron core, comprising multiple iron core modules. These modules are detachably spliced ​​together end-to-end to form an annular iron core with a central rotor channel. Each iron core module includes a module body and a coil winding section connected to the inner side of the module body. One side wall of the module body has a vertical dovetail groove, and the other side wall has a vertical trapezoidal connecting section. The size and position of the trapezoidal connecting section match the size and position of the dovetail groove. Adjacent iron core modules are connected end-to-end through the dovetail groove and the trapezoidal connecting section. The coil winding section is used to wind coils, and its inner end has a coil limiting section with an arc-shaped end face. The arc-shaped end faces of multiple iron core modules are located on the same cylindrical surface. This splicing type combined iron core has advantages not found in existing technologies, such as simple manufacturing process, high production efficiency, low production cost, and convenient maintenance.

[0004] Based on the above, most existing rotor cores adopt an integral structure. During the coil winding process in the production stage, the integral closed core structure restricts the winding operation space, which not only increases the difficulty of winding installation but also prolongs production time, indirectly increasing manufacturing costs. Furthermore, if local damage occurs to the integral core during use, such as slot deformation or loosening of silicon steel sheets, the entire core must be replaced due to structural limitations, significantly increasing equipment maintenance costs. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a spliced, impact-resistant, high-toughness rotor core. This solves the problem that existing rotor cores, which mostly employ an integral structure, restrict the winding operation space during the coil winding process. This not only increases the difficulty of winding assembly but also prolongs production time, indirectly increasing manufacturing costs. Furthermore, during use, if local damage occurs to the integral core, such as slot deformation or loose silicon steel sheets, the entire core must be replaced due to structural limitations, significantly increasing equipment maintenance costs.

[0006] The purpose and effect of this utility model of a spliced, impact-resistant, high-toughness rotor core are achieved by the following specific technical means: A spliced, impact-resistant, high-toughness rotor core includes an inner core cylinder, toothed grooves, a bottom sealing ring, a positioning ring, a top sealing ring, a splicing assembly, and a limiting assembly. Multiple sets of toothed grooves are arranged in a circumferential array on the outer side of the inner core cylinder. The bottom sealing ring is fixedly connected to the bottom of the inner core cylinder. The positioning ring is located at the top of the inner core cylinder. The top sealing ring is located at the top of the positioning ring. The splicing assembly is located on the outer side of the inner core cylinder. The limiting assembly is located on the outer side of the inner core cylinder.

[0007] Furthermore, the splicing assembly includes: splicing grooves and splicing blocks. Multiple sets of splicing grooves are arranged in a circumferential array inside the iron core cylinder. Multiple sets of splicing blocks are arranged in a fixed manner at the ends of multiple sets of toothed grooves, and the multiple sets of splicing blocks are respectively engaged inside the multiple sets of splicing grooves.

[0008] Furthermore, the splicing assembly also includes: an elastic buffer layer, wherein multiple sets of the elastic buffer layer are provided, and the multiple sets of the elastic buffer layer are respectively attached to the inside of multiple sets of splicing slots.

[0009] Furthermore, the limiting component includes: positioning blocks and positioning holes, wherein multiple sets of positioning blocks are arranged in a circumferential array on the top of the inner cylinder of the iron core; and multiple sets of positioning holes are arranged inside the positioning ring.

[0010] Furthermore, the limiting component also includes: limiting blocks and limiting holes. Two sets of limiting blocks are provided, and the two sets of limiting blocks are fixedly installed on the tops of two sets of positioning blocks at opposite positions. Two sets of limiting holes are provided, and the two sets of limiting holes are respectively opened inside the two sets of limiting blocks.

[0011] Furthermore, the limiting component also includes: a sliding groove and a sliding block. The sliding groove is provided in two sets, and the two sets of sliding grooves are opened on both sides inside the top encapsulation ring. The sliding block is provided in two sets, and the two sets of sliding blocks are slidably connected to each other inside the two sets of sliding grooves.

[0012] Furthermore, the limiting component also includes: limiting pins, friction grooves, and elastic elements. Two sets of limiting pins are provided, and the two sets of limiting pins are respectively fixedly installed inside the two sets of sliding blocks. Two sets of friction grooves are provided, and the two sets of friction grooves are respectively opened on the top of the two sets of sliding blocks. Two sets of elastic elements are provided, and one end of each set of elastic elements is fixedly connected to the inner side of the sliding groove on the same side, and the other end of each set of elastic elements is fixedly connected to the outer side of the sliding block on the same side.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this invention features a splicing assembly. Through a modular design, the main body of the iron core is broken down into a core support structure and independent toothed grooves. The toothed grooves are rapidly assembled through precise interlocking of splicing blocks and grooves. The arc-shaped contact surface increases the contact area to disperse stress, and, combined with the elastic buffer layer within the splicing groove, forms an interference fit. This eliminates gaps and enhances the tightness of the fit, while also absorbing impact energy through elastic deformation, reducing vibration transmission, and significantly improving overall impact resistance and structural toughness.

[0014] Secondly, this invention features a limiting component. Through the precise docking of the positioning ring and the positioning block, combined with the bottom encapsulation ring, it forms a coordinated upper and lower support, rigidly constraining the partition columns on both sides of the splicing groove, thus enhancing its structural stability and resistance to deformation. The positioning ring provides axial press-fit fixation to the toothed groove, preventing loosening during operation. The top encapsulation ring, through a limiting pin driven by an elastic element, engages with the limiting block to axially limit the positioning ring, achieving a stable overall installation of multiple components and further improving structural stability.

[0015] This invention offers advantages such as modular replacement, simple maintenance, and convenient operation. It facilitates assembly after individual tooth winding, is easy to operate and has low manufacturing costs. Furthermore, damaged parts can be replaced individually in case of localized damage, reducing maintenance costs. Simultaneously, through structural optimization and elastic buffer design, it balances impact resistance and toughness, ensuring long-term stable operation of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the splicing block structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the splicing groove structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the positioning block structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the sliding block structure of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Iron core inner cylinder; 101. Splicing groove; 102. Elastic buffer layer; 103. Positioning block; 104. Limiting block; 105. Limiting hole; 2. Toothed groove; 201. Splicing block; 3. Bottom sealing ring; 4. Positioning ring; 401. Positioning hole; 5. Top sealing ring; 501. Sliding groove; 502. Sliding block; 5021. Limiting pin; 5022. Friction groove; 5023. Elastic element. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example 1

[0023] As attached Figure 1 To be continued Figure 5 As shown: This utility model provides a spliced, impact-resistant, high-toughness rotor core, including an inner core cylinder 1, toothed grooves 2, a bottom sealing ring 3, a positioning ring 4, a top sealing ring 5, and a splicing assembly. Multiple sets of toothed grooves 2 are arranged in a circumferential array on the outside of the inner core cylinder 1. The bottom sealing ring 3 is fixedly connected to the bottom of the inner core cylinder 1. The positioning ring 4 is located at the top of the inner core cylinder 1. The top sealing ring 5 is located at the top of the positioning ring 4. The splicing assembly is located on the outside of the inner core cylinder 1.

[0024] The splicing assembly includes: splicing grooves 101 and splicing blocks 201. Multiple sets of splicing grooves 101 are arranged in a circumferential array inside the inner cylinder 1 of the iron core. Multiple sets of splicing blocks 201 are arranged in a fixed installation at the ends of multiple sets of toothed grooves 2, and the multiple sets of splicing blocks 201 are respectively snapped into the interior of the multiple sets of splicing grooves 101.

[0025] The splicing assembly also includes: an elastic buffer layer 102, which is provided in multiple sets, and the multiple sets of elastic buffer layers 102 are respectively attached to the inside of multiple sets of splicing slots 101.

[0026] The specific usage and function of this embodiment are as follows: This invention adopts a modular design, disassembling the iron core body into an inner core cylinder 1 and multiple sets of independent toothed grooves 2. The inner core cylinder 1 serves as the core support structure, used to achieve a stable connection with the rotor shaft. The bottom sealing ring 3 is fixedly connected to the bottom of the inner core cylinder 1, and its inner side corresponds to and fits against the bottom edge of the splicing groove 101, forming an axial limit on the bottom of the splicing block 201 that is engaged in the splicing groove 101, preventing the splicing block 201 from shifting downward along the axial direction during assembly or operation, thus enhancing the positioning accuracy of the splicing structure. The multiple sets of toothed grooves 2 precisely engage with the splicing grooves 101 arranged in a circumferential array on the outer side of the inner core cylinder 1 through the splicing block 201 at the end, completing rapid assembly. The mating surfaces of the splicing block 201 and the splicing groove 101 adopt an arc-shaped design, which increases the contact area and disperses stress, thereby improving the impact resistance of the connection structure. Simultaneously, an elastic buffer layer 102 is pre-attached to the inner side of the splicing groove 101. After assembly, this creates an interference fit between the splicing block 201 and the splicing groove 101, eliminating gaps to enhance overall tightness and absorbing impact energy through the deformation characteristics of the elastic buffer layer 102. This effectively reduces vibration transmission, significantly improving the overall impact resistance and structural toughness of the core, ensuring the stability and reliability of the motor during operation. Example 2

[0027] Based on Example 1, such as Figures 1 to 5 As shown, it also includes: a limiting component, which is disposed on the outside of the inner cylinder 1 of the iron core.

[0028] The limiting component includes: positioning block 103 and positioning hole 401. Multiple sets of positioning blocks 103 are arranged in a circumferential array on the top of the inner cylinder 1 of the iron core; multiple sets of positioning holes 401 are arranged in a circumferential array on the top of the inner cylinder 1 of the iron core; multiple sets of positioning holes 401 are arranged in a circumferential array on the top of the inner cylinder 1 of the iron core.

[0029] The limiting component also includes: a limiting block 104 and a limiting hole 105. Two sets of limiting blocks 104 are provided, and the two sets of limiting blocks 104 are fixedly installed on the top of two sets of positioning blocks 103 at opposite positions. Two sets of limiting holes 105 are provided, and the two sets of limiting holes 105 are respectively opened inside the two sets of limiting blocks 104.

[0030] The limiting component also includes: a sliding groove 501 and a sliding block 502. The sliding groove 501 is provided in two sets, and the two sets of sliding grooves 501 are opened on both sides inside the top encapsulation ring 5. The sliding block 502 is provided in two sets, and the two sets of sliding blocks 502 are slidably connected to each other inside the two sets of sliding grooves 501.

[0031] The limiting component also includes: a limiting pin 5021, a friction groove 5022, and an elastic element 5023. Two sets of limiting pins 5021 are provided, and the two sets of limiting pins 5021 are respectively fixedly installed inside the two sets of sliding blocks 502. Two sets of friction grooves 5022 are provided, and the two sets of friction grooves 5022 are respectively opened on the top of the two sets of sliding blocks 502. Two sets of elastic elements 5023 are provided, and one end of each set of elastic elements 5023 is fixedly connected to the inner side of the sliding groove 501 on the same side, and the other end of each set of elastic elements 5023 is fixedly connected to the outer side of the sliding block 502 on the same side.

[0032] The specific usage and function of this embodiment are as follows: During assembly, the positioning ring 4 precisely aligns with the positioning block 103 at the top of the inner cylinder 1 through multiple sets of positioning holes 401. Together with the bottom encapsulation ring 3, they form a coordinated upper and lower support, providing rigid constraints on the top and bottom of the partition columns on both sides of the splicing groove 101, significantly enhancing the structural stability and deformation resistance of the partition columns. At the same time, the positioning ring 4 is tightly pressed onto the top of the splicing groove 101, ensuring the tight fit between the toothed groove 2 and the inner cylinder 1 through axial pressure, preventing loosening due to vibration during operation.

[0033] During installation of the top sealing ring 5, the friction groove 5022 on the top of the sliding block 502 is moved, causing the sliding block 502 to slide along the sliding groove 501 and compress the elastic element 5023. At this time, the top sealing ring 5 is fastened to the top of the positioning ring 4. After the friction groove 5022 is released, the elastic element 5023 resets and pushes the sliding block 502 to move, so that the limiting pin 5021 is inserted into the limiting hole 105 of the limiting block 104. At this time, the top sealing ring 5 forms an axial limit on the positioning ring 4, preventing the positioning ring 4 from loosening, and realizing the overall stable installation of the iron core inner cylinder 1, the positioning ring 4 and the top sealing ring 5.

[0034] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0035] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0036] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A spliced, impact-resistant, high-toughness rotor core, characterized in that: The spliced ​​impact-resistant high-toughness rotor core includes an inner core cylinder (1), toothed grooves (2), a bottom sealing ring (3), a positioning ring (4), a top sealing ring (5), a splicing assembly, and a limiting assembly. The toothed grooves (2) are provided in multiple sets, and the multiple sets of toothed grooves (2) are arranged in a circumferential array on the outside of the inner core cylinder (1). The bottom sealing ring (3) is fixedly connected to the bottom of the inner core cylinder (1). The positioning ring (4) is located on the top of the inner core cylinder (1). The top sealing ring (5) is located on the top of the positioning ring (4). The splicing assembly is located on the outside of the inner core cylinder (1). The limiting assembly is located on the outside of the inner core cylinder (1).

2. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 1, characterized in that: The splicing assembly includes: splicing grooves (101) and splicing blocks (201). Multiple sets of splicing grooves (101) are arranged in a circumferential array inside the iron core inner cylinder (1). Multiple sets of splicing blocks (201) are arranged in a fixed manner at the ends of multiple sets of toothed grooves (2). The multiple sets of splicing blocks (201) are respectively snapped into the multiple sets of splicing grooves (101).

3. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 2, characterized in that: The splicing assembly also includes an elastic buffer layer (102), which is provided in multiple sets, and the multiple sets of elastic buffer layers (102) are respectively attached to the inside of multiple sets of splicing grooves (101).

4. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 1, characterized in that: The limiting component includes: a positioning block (103) and a positioning hole (401). The positioning block (103) is provided in multiple sets, and the multiple sets of positioning blocks (103) are arranged in a circumferential array on the top of the inner cylinder (1) of the iron core. The positioning hole (401) is provided in multiple sets, and the multiple sets of positioning holes (401) are opened inside the positioning ring (4).

5. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 4, characterized in that: The limiting component further includes: a limiting block (104) and a limiting hole (105). The limiting block (104) is provided in two sets, and the two sets of the limiting block (104) are fixedly installed on the top of two sets of positioning blocks (103) at opposite positions. The limiting hole (105) is provided in two sets, and the two sets of the limiting hole (105) are respectively opened inside the two sets of limiting blocks (104).

6. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 4, characterized in that: The limiting component also includes: a sliding groove (501) and a sliding block (502). The sliding groove (501) is provided in two sets, and the two sets of sliding grooves (501) are opened on both sides inside the top encapsulation ring (5). The sliding block (502) is provided in two sets, and the two sets of sliding blocks (502) are slidably connected to each other inside the two sets of sliding grooves (501).

7. The spliced ​​impact-resistant, high-toughness rotor core as described in claim 4, characterized in that: The limiting assembly further includes: a limiting pin (5021), a friction groove (5022), and an elastic element (5023). The limiting pin (5021) is provided in two sets, and the two sets of limiting pins (5021) are respectively fixedly installed inside the two sets of sliding blocks (502). The friction groove (5022) is provided in two sets, and the two sets of friction grooves (5022) are respectively opened on the top of the two sets of sliding blocks (502). The elastic element (5023) is provided in two sets, one end of the two sets of elastic elements (5023) is fixedly connected to the inner side of the sliding groove (501) on the same side, and the other end of the two sets of elastic elements (5023) is fixedly connected to the outer side of the sliding block (502) on the same side.

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