Disassembling and assembling structure of manuscript

Abstract

The utility model discloses an electric draft disassembling and assembling structure which comprises a shell, a cavity is formed in the shell and used for containing a motor assembly, the motor assembly comprises a motor barrel, a stator and a rotor, the motor barrel is arranged in the cavity in a clamped mode, a bearing is arranged at the bottom of the motor barrel and connected with the rotor, and the stator is arranged in the cavity. The stator is arranged on the outer side of the rotor and is clamped with the motor barrel; at least two lifting convex parts are arranged at the bottom of the motor barrel in the radial direction, the lifting convex parts are arranged at the tail of the motor barrel, fixing claws of a puller can be arranged on the lifting convex parts, a middle limiting rod abuts against a motor shaft, the motor barrel and a stator are directly pulled out through the puller, a rotor can be conveniently taken out, and the disassembly and assembly process is more convenient and faster.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to a disassembly and assembly structure of electric tools. Background Art

[0002] In the existing electric pick design, the motor and the electric pick housing are usually connected by interference fit to ensure the stability of the motor under high-intensity working conditions and the effective transmission of torque. However, this kind of tight-fitting structural design brings a series of problems in actual use and maintenance.

[0003] First, when the motor needs to be replaced due to wear, aging or other failures due to long-term use, the operation process is extremely cumbersome and time-consuming. Since the motor and the electric pick housing are interference fit, conventional disassembly tools such as pullers are often unable to directly remove the motor from one side. This requires maintenance personnel to first remove all the covers on both sides of the electric pick before trying to force the motor out of the housing by knocking from the other side. This process not only increases the workload of equipment maintenance, but also places high demands on the operating skills of technicians.

[0004] Secondly, there are great risks in the process of knocking the motor to separate it. If the force is not properly controlled or the operation is wrong, it is very easy to cause the internal parts of the motor to be damaged more severely, or even cause irreversible damage, which will affect the overall performance of the motor, increase maintenance costs, and shorten the service life of the motor and even the entire electric pick. In addition, this violent disassembly method may also pose a threat to the surrounding environment and the safety of workers. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present application provides a disassembly and assembly structure for electronic manuscripts.

[0006] The technical solution adopted by the present application to solve its technical problems is: an electric draft disassembly and assembly structure, including a shell, a cavity is arranged in the shell for accommodating a motor assembly, the motor assembly includes a motor barrel, a stator and a rotor, the motor barrel is clamped in the cavity, a bearing is arranged at the bottom of the motor barrel and is connected to the rotor, the stator is arranged on the outside of the rotor and is clamped with the motor barrel; at least two lifting protrusions are radially arranged at the bottom of the motor barrel.

[0007] In some embodiments, a limiting seat is fixedly disposed in the motor barrel via a limiting member, and the limiting seat extends radially inward and is used to support the stator.

[0008] In some embodiments, a plurality of first clamping protrusions are circumferentially arranged on the outer side of the motor barrel, a first guide portion is arranged on one side of the first clamping protrusion close to the opening end of the motor barrel, and the motor barrel is interference fit with the cavity.

[0009] In some embodiments, a plurality of second clamping protrusions are circumferentially arranged on the inner side of the motor barrel, a second guide portion is arranged on one side of the second clamping protrusion close to the open end of the motor barrel, and the motor barrel and the stator are interference fit.

[0010] In some embodiments, a limiting protrusion is circumferentially arranged on the outer side of the motor barrel to cooperate with a limiting groove in the cavity.

[0011] In some embodiments, a plurality of air outlets are provided at the bottom of the motor barrel.

[0012] In some embodiments, the bottom of the motor barrel is symmetrically provided with mounting openings, which are used to set carbon brushes and fix them through elastic components.

[0013] In some embodiments, a fan blade is disposed at the end of the rotor, and a plurality of air inlets are disposed on the shell corresponding to the fan blade.

[0014] The beneficial effect of the present application is that by setting a lifting protrusion at the tail of the motor barrel, the fixing claw of the puller can be set on the lifting protrusion, and the middle limit rod is against the motor shaft. The motor barrel and the stator can be directly pulled out by the puller, and the rotor can also be easily taken out, and the disassembly and assembly process is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the elevation of this application.

[0017] Figure 2 This application Figure 1 A local enlarged schematic diagram of point A.

[0018] Figure 3 This application Figure 1 Explosion diagram.

[0019] Figure 4 It is a structural schematic diagram of the motor barrel of the present application.

[0020] Figure 5 It is a structural schematic diagram of the shell of the present application.

[0021] In the figure, 1. shell, 11. cavity, 111. limiting groove, 12. air inlet, 2. motor assembly, 21. motor barrel, 211. lifting protrusion, 212. limiting seat, 213. first clamping protrusion, 214. first guide part, 215. limiting protrusion, 216. second clamping protrusion, 217. second guide part, 218. air outlet, 219. installation port, 22. stator, 23. rotor, 24. bearing, 25. elastic component, 26. fan blade. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection of this application.

[0023] For the electronic manuscript disassembly and assembly structure of this application, the specific implementation plan is as follows:

[0024] Refer to the attached Figure 1-5 As shown, the present application provides an innovative design of the internal assembly disassembly structure of the electric draft, the core of which includes a housing 1 and a motor assembly 2 disposed in the internal cavity 11 of the housing. The motor assembly 2 is mainly composed of a motor barrel 21, a stator 22 and a rotor 23. The motor barrel 21 is fixed in the cavity 11 by precise clamping, and a bearing 24 is installed at the bottom, which is connected to the rotor 23, while the stator 22 is sleeved on the outside of the rotor and is tightly matched with the motor barrel 21 in the same clamping manner.

[0025] In order to facilitate the quick and convenient disassembly of the motor assembly, at least two lifting protrusions 211 are radially preset at the bottom of the motor barrel 21. According to a preferred embodiment, in actual operation, a special tool such as a puller can be used to firmly place the fixed claw of the puller on the lifting protrusion 211, and at the same time, the middle limit rod can be used to align and abut against the motor shaft. Only by applying appropriate force, the motor barrel 21 can be easily pulled out of the housing together with the stator 22, so that the rotor 23 can also be quickly taken out, which greatly simplifies the disassembly and assembly process of the motor assembly and improves work efficiency.

[0026] Further optimization is that corresponding clamping and guiding structures are provided on both the inner and outer sides of the motor barrel 21: a plurality of first clamping protrusions 213 and first guiding portions 214 for guiding cooperation are arranged on the outer circumference, so that the motor barrel and the cavity 11 achieve interference fit; and second clamping protrusions 216 and second guiding portions 217 are also arranged on the inner circumference, ensuring that the motor barrel and the stator are stable and easy to assemble.

[0027] In addition, in order to prevent the motor assembly from generating unnecessary deflection during operation, the motor barrel 21 is also specially provided with a limiting protrusion 215 that matches the limiting groove 111 in the cavity 11, thereby ensuring that the motor assembly always remains correctly positioned.

[0028] Considering the heat dissipation problem, multiple air outlets 218 are provided at the bottom of the motor barrel 21, and the end of the rotor 23 is equipped with a fan blade 26. The corresponding position of the housing 1 is provided with an air inlet 12. When cold air flows in from the air inlet 12, it will be accelerated by the fan blade 26 after the motor is running and discharged from the air outlet 218, forming an effective air circulation cooling system.

[0029] Finally, in order to ensure reliable installation and elastic contact of the carbon brush, a mounting opening 219 is symmetrically arranged at the bottom of the motor barrel 21 for installing the carbon brush and stably fixing it through the elastic component 25.

[0030] In summary, the electric draft disassembly and assembly structure proposed in this patent not only overcomes the cumbersome problem of motor replacement in the prior art, but also realizes functions such as efficient heat dissipation and stable positioning through reasonable structural design, effectively improving the overall working performance and maintenance convenience of the electric pick. At the same time, although a variety of preferred embodiments are provided above, this application is not limited to these example descriptions, and any simple modification, equivalent transformation or modification based on the technical solution of this application, as long as it does not deviate from the concept of this application, should be deemed to fall within the scope of protection of this application.

Claims

1. An electric draft disassembly and assembly structure, comprising a housing, wherein a cavity is provided in the housing for accommodating a motor assembly, It is characterized in that The motor assembly includes a motor barrel, a stator and a rotor, and the motor barrel is clamped and arranged in the cavity. A bearing is provided at the bottom of the motor barrel and is connected to the rotor, and the stator is provided outside the rotor and is clamped with the motor barrel; At least two lifting protrusions are radially arranged at the bottom of the motor barrel.

2. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: A limiting seat is fixedly arranged in the motor barrel through a limiting member, and the limiting seat extends radially inward and is used to support the stator.

3. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: A plurality of first clamping protrusions are arranged circumferentially on the outer side of the motor barrel, a first guiding portion is arranged on one side of the first clamping protrusion close to the opening end of the motor barrel, and the motor barrel is interference fit with the cavity.

4. The disassembly and assembly structure of an electronic manuscript according to claim 3, characterized in that: A plurality of second clamping protrusions are arranged circumferentially on the inner side of the motor barrel, and a second guide portion is arranged on one side of the second clamping protrusion close to the open end of the motor barrel, so that the motor barrel and the stator are interference fit.

5. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: A limiting convex portion is circumferentially arranged on the outer side of the motor barrel to cooperate with a limiting groove in the cavity.

6. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: A plurality of air outlets are arranged at the bottom of the motor barrel.

7. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: The bottom of the motor barrel is symmetrically provided with mounting openings, and the mounting openings are used to set carbon brushes and fix them through elastic components.

8. The electronic manuscript disassembly and assembly structure according to claim 1, characterized in that: The rotor end is provided with a fan blade, and the shell is provided with a plurality of air inlets corresponding to the fan blade.

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