Stator and rotor separating and disassembling tool
By combining the dual positioning method of guide ring and sliding guide rod with mechanical bolt ejection, the problems of bump damage and low efficiency in traditional stator and rotor separation and disassembly are solved, achieving efficient and stable stator and rotor separation and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUZHOU SHANGCHI ELECTRIC CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional methods for separating and disassembling stators and rotors are difficult to control precisely in terms of force and direction, which can easily lead to collisions and damage. The separation process is unstable and inefficient, increasing labor intensity and costs.
A dual positioning method using a guide ring and a sliding guide rod working together, combined with mechanical bolt ejection, is employed to achieve separation of the stator and rotor, avoiding collisions and maintaining process stability.
It achieves a smooth and controllable stator-rotor separation process, reduces time consumption by more than 50%, lowers the risk of damage and labor intensity, adapts to different motor specifications, and reduces costs.
Smart Images

Figure CN224138877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disassembly tooling technology, and more specifically to a stator and rotor separation and disassembly tooling. Background Technology
[0002] In the repair, maintenance, and disassembly of motors, separating the stator and rotor is a common operation. Traditional methods typically rely on manual tapping or the use of simple mechanical tools to achieve this separation. However, these traditional methods have many problems and shortcomings.
[0003] First, manual tapping makes it difficult to precisely control the force and direction, easily causing impact damage to the stator and rotor surfaces, affecting the motor's performance and lifespan. For example, during tapping, the rotor may deform due to uneven force, or the stator's enameled wire may be damaged, leading to a decrease in the motor's insulation performance.
[0004] Secondly, the separation process using traditional methods is not smooth enough, and it cannot guarantee that the stator and rotor will remain coaxial throughout the separation process. This not only increases the difficulty of separation, but may also lead to the stator and rotor being unable to be reassembled smoothly after separation, causing additional trouble for maintenance work.
[0005] Furthermore, traditional disassembly methods are inefficient, typically requiring significant time and manpower. In practice, the lack of effective guiding and positioning devices necessitates repeated adjustments to the stator and rotor positions to gradually achieve separation. This not only increases labor intensity but also reduces the overall efficiency of maintenance work. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a stator and rotor separation and disassembly fixture. This fixture eliminates the relative displacement between the stator and rotor through dual positioning to avoid collisions. Furthermore, it employs mechanical ejection via bolts, ensuring a smooth, controllable, and efficient separation process. The overall component structure is simple, which reduces costs.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] A stator and rotor separation and disassembly tooling, comprising:
[0009] The ejection assembly includes a guide ring, a crossbeam, a connector, an ejection guide rod, and an ejection bolt. The guide ring has a guide sleeve at its top and a positioning structure at its bottom. The crossbeam is connected to the guide ring via the connector. One end of the ejection guide rod has a connecting structure, and the ejection guide rod passes through the guide sleeve and is connected to the rotor shaft via the connecting structure. The crossbeam has an ejection threaded hole, and the ejection bolt passes through the ejection threaded hole and abuts against the ejection guide rod.
[0010] The sliding guide assembly includes several sliding guide rods arranged in parallel and able to pass through mounting holes on the stator rear end cover, with one end connected to the stator body.
[0011] Furthermore, the positioning structure at the bottom of the guide ring includes a positioning protrusion ring, which can cooperate with the stator rear end cover for positioning, and the guide ring is provided with several connecting holes.
[0012] Furthermore, the connecting component includes two double-ended bolts, the guide ring is provided with two mounting threaded holes, and the two ends of the crossbeam are provided with mounting through holes. One end of the double-ended bolt is threadedly connected to the mounting threaded hole of the guide ring, and the other end passes through the mounting through hole and is connected with a washer and a mounting nut.
[0013] Furthermore, the connection structure includes a threaded hole.
[0014] Furthermore, the ejector bolt is a long bolt.
[0015] Furthermore, four sliding guide rods are provided, and all four guide sliding rods are arranged in parallel.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This invention utilizes dual positioning, with the guide ring and sliding guide rod working together to eliminate relative displacement between the stator and rotor, thus avoiding collisions. Furthermore, it employs mechanical ejection via bolts, ensuring a smooth and controllable separation process without the need for hammering, preventing damage to the stator and rotor, and reducing the time required by traditional methods by more than 50%. Moreover, its modular design results in a simple and easy-to-process overall component structure that can be adapted to different motor specifications, thereby reducing costs. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0019] Figure 1 A schematic diagram of the structure of a stator and rotor separation and disassembly tool. Figure 1 ;
[0020] Figure 2 A schematic diagram of a stator and rotor separation and disassembly tooling. Figure 2 .
[0021] The markings in the diagram are: 1. Guide ring; 2. Guide sleeve; 3. Ejector guide rod; 4. Double-ended bolt; 5. Crossbeam; 6. Mounting nut; 7. Washer; 8. Ejector bolt; 9. Sliding guide rod; 10. Connecting hole; 11. Ejector threaded hole. Detailed Implementation
[0022] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0024] A stator and rotor separation and disassembly tooling, such as Figure 1-2 As shown, it includes:
[0025] The ejection assembly includes a guide ring 1, a crossbeam 5, a connector, an ejection guide rod 3, and an ejection bolt 8. The guide ring 1 has a guide sleeve 2 at its top and a positioning structure at its bottom. The crossbeam 5 is connected to the guide ring 1 through the connector. One end of the ejection guide rod 3 has a connecting structure, and the ejection guide rod 3 passes through the guide sleeve 2 and is connected to the rotor shaft through the connecting structure. The crossbeam 5 has an ejection threaded hole 11, and the ejection bolt 8 passes through the ejection threaded hole 11 and abuts against the ejection guide rod 3.
[0026] The sliding guide assembly includes a plurality of sliding guide rods 9, which are arranged in parallel and can pass through the mounting holes on the stator rear end cover, and one end is connected to the stator body.
[0027] Preferably, the positioning structure at the bottom of the guide ring 1 includes a positioning protrusion ring, which can cooperate with the stator rear end cover for positioning, and the guide ring 1 is provided with a plurality of connecting holes 10.
[0028] Preferably, the connector includes two double-ended bolts 4, the guide ring 1 is provided with two mounting threaded holes, and the two ends of the crossbeam 5 are provided with mounting through holes. One end of the double-ended bolt 4 is threadedly connected to the mounting threaded hole of the guide ring 1, and the other end passes through the mounting through hole and is connected with a washer 7 and a mounting nut 6. The double-ended bolt 4 is provided with a shoulder, and the crossbeam 5 is fixedly installed and connected by the shoulder, the washer 7 and the mounting nut 6.
[0029] Preferably, the connection structure includes a threaded hole.
[0030] Preferably, the ejector bolt 8 is a long bolt.
[0031] Preferably, four sliding guide rods 9 are provided, and the four guide sliding rods 9 are arranged in parallel. One end of each guide sliding rod 9 is provided with an external thread, and the guide sliding rod 9 is fixedly installed by being threadedly connected to the threaded hole of the stator body through the external thread.
[0032] Disassembly process:
[0033] When separating and disassembling the stator and rotor, the sliding guide rod 9 is passed through the mounting hole of the stator rear end cover and connected to the stator body, so as to guide the stator rear end cover to slide during the separation and disassembly of the stator and rotor.
[0034] Then, the ejector guide rod 3 is connected to the rotor shaft through a stud and a connecting threaded hole. Next, the guide ring 1 is embedded into the stator rear end cover hole through a positioning convex ring, and then connected to the stator rear end cover through a bolt passing through the connecting hole 10, so as to achieve the positioning connection and fixation of the guide ring 1 and the stator rear end cover. Finally, the ejector bolt 8 is passed through the ejector threaded hole 11 of the crossbeam 5 and abuts against the ejector guide rod 3. The ejector bolt 8 is rotated to push the rotor to move axially until it is completely separated.
[0035] This utility model eliminates relative displacement between the stator and rotor through dual positioning, utilizing the synergistic effect of the guide ring 1 and the sliding guide rod 9 to avoid collisions; and adopts mechanical ejection by bolts, making the separation process smooth and controllable, requiring no hammering throughout, causing no damage to the stator and rotor, and reducing the time by more than 50% compared to traditional methods; and adopts a modular design, with a simple overall component structure, easy processing, and adaptability to different specifications of motors, which can reduce costs.
[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A stator-rotor separation dismounting tool, characterized by, include: The ejection assembly includes a guide ring, a crossbeam, a connector, an ejection guide rod, and an ejection bolt. The guide ring has a guide sleeve at its top and a positioning structure at its bottom. The crossbeam is connected to the guide ring via the connector. One end of the ejection guide rod has a connecting structure, and the ejection guide rod passes through the guide sleeve and is connected to the rotor shaft via the connecting structure. The crossbeam has an ejection threaded hole, and the ejection bolt passes through the ejection threaded hole and abuts against the ejection guide rod. The sliding guide assembly includes several sliding guide rods arranged in parallel and capable of passing through mounting holes on the stator rear end cover, with one end connected to the stator body.
2. The stator-rotor separation dismounting tool according to claim 1, characterized in that: The positioning structure at the bottom of the guide ring includes a positioning protrusion ring, which can cooperate with the stator rear end cover for positioning, and the guide ring is provided with several connecting holes.
3. The stator and rotor separation and disassembly fixture according to claim 1, characterized in that: The connector includes two double-ended bolts, the guide ring has two threaded holes, and the two ends of the crossbeam have through holes. One end of the double-ended bolt is threaded into the threaded hole of the guide ring, and the other end passes through the through hole and is connected to a washer and a mounting nut.
4. The stator-rotor separation dismounting tool according to claim 1, characterized in that: The connection structure includes a threaded hole.
5. The stator-rotor separation dismounting tool according to claim 1, characterized in that: The ejector bolt is a long bolt.
6. The stator-rotor separation dismounting tool according to claim 1, characterized in that: The sliding guide rods are provided in four parts, and the four guide sliding rods are arranged in parallel.