Three-phase asynchronous motor

Abstract

The utility model relates to the related technical field of motors, in particular to a three-phase asynchronous motor, which comprises a casing, end covers and an auxiliary dismounting mechanism, the end covers are mounted on two sides of the casing through the auxiliary dismounting mechanism, a rotor is rotatably mounted in the middle of the casing, and the auxiliary dismounting mechanism comprises a plurality of fixing frames. The fixing frames are fixedly installed on the two sides of the periphery of the machine shell respectively and distributed in a circumferential array mode, a limiting pin is installed in the middle of each fixing frame in a sliding mode, and the periphery of each limiting pin is sleeved with a spring. The device has the beneficial effects that by pulling the pull ring, the limiting pin is matched with the spring and the fixing frame, the limiting pin can be separated from the limiting groove in the supporting plate, then the end cover can be disassembled and assembled, meanwhile, under cooperation of the spring, the limiting pin can be clamped in the limiting groove again, and therefore the end cover can be rapidly installed, the workload of workers is reduced, and the working efficiency is improved. And a worker can conveniently overhaul and maintain related parts in the machine shell.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a three-phase asynchronous motor. Background Art

[0002] A three-phase asynchronous motor is an efficient and reliable motor, which is widely used in industrial and agricultural production. A three-phase asynchronous motor is a type of induction motor. It is powered by connecting to a three-phase alternating current of 380V, and uses the rotating magnetic field generated by the current to drive the rotor to rotate. As a widely used type of motor, the three-phase asynchronous motor plays an important role in many fields with its unique working principle and structural characteristics.

[0003] In the prior art, the end covers mounted on the surface of a three-phase asynchronous motor are generally fixed by bolts. When maintenance and repair are required, a large number of fixing bolts on it need to be disassembled and assembled. The thread fixing method has many operation steps, increasing the workload of the staff and reducing the working efficiency of assembling, disassembling and repairing the three-phase asynchronous motor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a three-phase asynchronous motor to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A three-phase asynchronous motor, including a housing, end covers and an auxiliary disassembly and assembly mechanism. The end covers are installed on both sides of the housing through the auxiliary disassembly and assembly mechanism. A rotor is rotatably installed in the middle of the housing. The auxiliary disassembly and assembly mechanism includes a plurality of fixing frames, which are respectively fixedly installed on both sides of the outer periphery of the housing and are arranged in a circumferential array. A limit pin is slidably installed in the middle of each fixing frame. Springs are sleeved on the outer periphery of each limit pin. Wedge surfaces are provided on the side of each limit pin close to the end cover.

[0006] A plurality of uniformly distributed support plates are fixedly installed on the side of the outer periphery of the end cover close to the housing. The support plates correspond to the limit pins one by one. Limit grooves are formed on the surfaces of the support plates and are adapted to the limit pins.

[0007] An installation and adjustment mechanism is arranged at the lower part of the housing.

[0008] Preferably, a plurality of uniformly distributed heat dissipation fins are fixedly installed on the outer periphery of the housing.

[0009] Preferably, a plurality of uniformly distributed heat dissipation grooves are formed on the side of one end cover away from the housing, and a heat dissipation fan is installed in the middle of one end cover.

[0010] Preferably, pull rings are movably installed in the middle of the side of each limit pin away from the support plate.

[0011] Preferably, the installation and adjustment mechanism includes two mounting plates, and each mounting plate is U-shaped. The lower parts of the mounting plates are both slidably mounted with adjustment blocks, and notch openings are formed in the middle of the bottom ends of the adjustment blocks. A plurality of uniformly distributed limit holes are formed in the lower parts on both sides of the mounting plates. Fixing plates are fixedly mounted on the mutually adjacent sides of the adjustment blocks on the same side, and mounting holes are symmetrically formed at the top ends of the fixing plates.

[0012] Preferably, mounting grooves are symmetrically formed in the lower parts on both sides of the mounting plates, and balls are fitted and mounted in the mounting grooves.

[0013] Preferably, the installation and adjustment mechanism further includes a mounting base, the mounting bases are respectively fixedly mounted on the upper parts of the mutually adjacent sides of the adjustment blocks on the same side, pin shafts are threadedly connected to the middle parts of the adjustment blocks, and the pin shafts are adapted to the limit holes.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] An auxiliary disassembly and assembly mechanism is provided inside the three-phase asynchronous motor proposed by the present utility model. By pulling the pull ring, the limit pin, in cooperation with the spring and the fixing frame, can be disengaged from the limit groove on the support plate, and then the end cover can be disassembled and assembled. At the same time, under the cooperation of the spring, the limit pin can be re-engaged in the limit groove, thereby realizing the rapid installation of the end cover, reducing the workload of the staff, and facilitating the staff to overhaul and maintain the relevant components inside the machine shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the main perspective structural schematic diagram of the present utility model;

[0017] Figure 2 is the partial structural schematic diagram of the heat dissipation fan of the present utility model;

[0018] Figure 3 is the partial structural schematic diagram of the auxiliary disassembly and assembly mechanism of the present utility model;

[0019] Figure 4 is the partial structural schematic diagram of the installation and adjustment mechanism of the present utility model.

[0020] In the figure: 1, heat dissipation fins; 2, machine shell; 3, rotor; 4, installation and adjustment mechanism; 41, mounting plate; 42, limit hole; 43, ball; 44, mounting groove; 45, fixing plate; 46, mounting hole; 47, adjustment block; 48, mounting base; 49, pin shaft; 5, heat dissipation groove; 6, end cover; 7, auxiliary disassembly and assembly mechanism; 71, support plate; 72, fixing frame; 73, spring; 74, limit pin; 75, pull ring; 76, limit groove; 8, heat dissipation fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to clearly and completely describe the purpose and technical solutions of the present utility model and make its advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of them, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a three-phase asynchronous motor, including a housing 2, end covers 6, and an auxiliary disassembly and assembly mechanism 7. The end covers 6 are installed on both sides of the housing 2 through the auxiliary disassembly and assembly mechanism 7. A rotor 3 is rotatably installed in the middle of the housing 2. The auxiliary disassembly and assembly mechanism 7 includes a plurality of fixing frames 72, which are respectively fixedly installed on both outer sides of the housing 2 and are arranged in a circumferential array. A limit pin 74 is slidably installed in the middle of each fixing frame 72. A spring 73 is sleeved on the outer periphery of the limit pin 74. A wedge surface is provided on one side of the limit pin 74 close to the end cover 6. A plurality of uniformly distributed support plates 71 are fixedly installed on the outer periphery of the end cover 6 close to the housing 2. The support plates 71 correspond to the limit pins 74 one by one. Limit grooves 76 are formed on the surfaces of the support plates 71 and are adapted to the limit pins 74. A pull ring 75 is movably installed in the middle of one side of the limit pin 74 away from the support plate 71. The staff can move the corresponding limit pin 74 by using the pull ring 75 on the limit pin 74. When the limit pin 74 disengages from the limit groove 76 on the support plate 71, the support plate 71 loses the limit of the limit pin 74, and then the staff can easily remove the end cover 6 from the housing 2, which is convenient for the staff to detect and repair the rotor 3 inside the housing 2. Moreover, since the fixing frame 72 is in a "ji" shape, when the support plate 71 is inserted into the inner through groove of the fixing frame 72, the support plate 71 will contact the wedge surface at the lower part of the limit pin 74, and the support plate 71 will push the limit pin 74 to move upward, and the spring 73 will be compressed. When the limit groove 76 moves to directly below the limit pin 74, the spring 73 will reset the limit pin 74, and at this time, the limit pin 74 will install and fix the support plate 71. And, in order to ensure the connection stability between the end cover 6 and the housing 2, the staff can appropriately use a small amount of fixing bolts on the end cover 6 for auxiliary fixing, which is convenient for the staff to easily disassemble and assemble the end cover 6 and is more convenient for overhauling the machine body.

[0023] A plurality of evenly distributed heat sinks 1 are fixedly installed on the outer periphery of the housing 2. On one side, a plurality of evenly distributed heat dissipation grooves 5 are formed on the side of the end cover 6 away from the housing 2. In the middle of one side of the end cover 6, a heat dissipation fan 8 is installed. By arranging a large number of heat sinks 1 on the housing 2, the heat sinks 1 are arranged at equal intervals on the outer side of the housing 2. The main function is to improve the heat dissipation efficiency by increasing the heat exchange area. Moreover, the heat sinks 1 are made of materials with good thermal conductivity, such as aluminum alloy or copper alloy. These materials can quickly conduct the heat generated inside the motor to the surface of the heat sinks 1, and then dissipate the heat to the surrounding environment through air convection, thereby improving the heat dissipation efficiency of the motor. Moreover, a heat dissipation fan 8 is also arranged inside the end cover 6 on one side, which can dissipate the heat generated inside the housing 2, so that the motor can maintain an appropriate temperature during operation and ensure the normal operation of the motor.

[0024] An installation and adjustment mechanism 4 is provided. The installation and adjustment mechanism 4 is arranged at the lower part of the housing 2. The installation and adjustment mechanism 4 includes two mounting plates 41, and each mounting plate 41 is U-shaped. Adjusting blocks 47 are slidably installed at the lower parts of the mounting plates 41, and notches are formed in the middle of the bottom ends of the adjusting blocks 47. A plurality of evenly distributed limiting holes 42 are formed at the lower parts of both sides of the mounting plates 41. Fixed plates 45 are fixedly installed on the mutually approaching sides of the adjusting blocks 47 on the same side. Mounting holes 46 are symmetrically formed at the top ends of the fixed plates 45. Mounting grooves 44 are symmetrically formed at the lower parts of both sides of the mounting plates 41, and balls 43 are fitted and installed in the mounting grooves 44. The installation and adjustment mechanism 4 further includes a mounting seat 48, and the mounting seats 48 are respectively fixedly installed at the upper parts of the mutually approaching sides of the adjusting blocks 47 on the same side. A pin shaft 49 is threadedly connected to the middle of each adjusting block 47, and the pin shaft 49 is adapted to the limiting holes 42. By rotating the pin shaft 49, under the cooperation of the threads, the pin shaft 49 will disengage from the corresponding limiting hole 42. At this time, the adjusting block 47 can drive the fixed block installed at its lower part to move. Since the balls 43 are provided at the lower part of the mounting plate 41, the friction between the adjusting block 47 and the mounting plate 41 can be reduced, and the smoothness of the movement of the adjusting block 47 can be improved. When the adjustment is completed, rotate the pin shaft 49 again, and then the pin shaft 49 can be inserted into the corresponding limiting hole 42 again, so as to fix the adjusting block 47 again. Since the height position of each fixed plate 45 can be adjusted independently, different installation requirements can be adapted, and the installation applicability is improved.

[0025] During actual use, the staff rotates the pin shaft 49. At this time, the pin shaft 49 can be disengaged from the limit hole 42, and then the adjusting block 47 can drive the fixing plate 45 to move, and the fixing plate 45 is adjusted according to the installation environment. After the adjustment is completed, rotate the pin shaft 49 again, and the pin shaft 49 can be clamped in the corresponding limit hole 42 again. At this time, the motor main body can be installed and fixed by using the fixing bolt in cooperation with the installation hole 46, which increases the use stability of the motor main body. Moreover, the limit pin 74 cooperates with the spring 73 and the fixing bracket 72 to control whether the limit pin 74 disengages from the limit groove 76 on the support plate 71, and then the end cover 6 can be quickly disassembled and assembled, reducing the workload of the staff and facilitating the staff to repair and maintain the relevant components in the casing 2.

[0026] Although the above description of the illustrative specific embodiments of the present application is provided for those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all applications and creations using the concept of the present application are within the scope of protection.

Claims

1. A three-phase asynchronous motor, comprising a motor housing (2), end covers (6) and an auxiliary disassembly and assembly mechanism (7), wherein the end covers (6) are installed on both sides of the motor housing (2) through the auxiliary disassembly and assembly mechanism (7), and are characterized in that: A rotor (3) is rotatably installed in the middle of the casing (2). The auxiliary disassembly and assembly mechanism (7) includes a plurality of fixing frames (72). The fixing frames (72) are respectively fixedly installed on both sides of the outer periphery of the casing (2) and are distributed in a circumferential array. A limit pin (74) is slidably installed in the middle of each fixing frame (72). A spring (73) is sleeved on the outer periphery of the limit pin (74). A wedge surface is provided on one side of the limit pin (74) close to the end cover (6). A plurality of uniformly distributed support plates (71) are fixedly installed on one side of the outer periphery of the end cover (6) close to the casing (2). The support plates (71) correspond to the limit pins (74) one by one. Limit grooves (76) are formed on the surfaces of the support plates (71) and are adapted to the limit pins (74). An installation and adjustment mechanism (4) is provided at the lower part of the casing (2).

2. A three-phase asynchronous motor according to claim 1, characterized in that: A plurality of uniformly distributed heat sinks (1) are fixedly installed on the outer periphery of the casing (2).

3. A three-phase asynchronous motor according to claim 1, characterized in that: A plurality of uniformly distributed heat dissipation grooves (5) are formed on one side of the end cover (6) far from the casing (2). A heat dissipation fan (8) is installed in the middle of one side of the end cover (6).

4. A three-phase asynchronous motor according to claim 1, characterized in that: A pull ring (75) is movably installed in the middle of one side of the limit pin (74) far from the support plate (71).

5. A three-phase asynchronous motor according to claim 1, characterized in that: The installation and adjustment mechanism (4) includes two installation plates (41), and each installation plate (41) is U-shaped. An adjustment block (47) is slidably installed at the lower part of the installation plate (41), and a notch is formed in the middle of the bottom end of the adjustment block (47). A plurality of uniformly distributed limit holes (42) are formed at the lower parts of both sides of the installation plate (41). Fixing plates (45) are fixedly installed on one side of the same-side adjustment blocks (47) close to each other. Installation holes (46) are symmetrically formed at the top ends of the fixing plates (45).

6. A three-phase asynchronous motor according to claim 5, characterized in that: Installation grooves (44) are symmetrically formed at the lower parts of both sides of the installation plate (41). Ball bearings (43) are fitted in the installation grooves (44).

7. A three-phase asynchronous motor according to claim 1, characterized in that: The installation and adjustment mechanism (4) further includes an installation seat (48). The installation seats (48) are respectively fixedly installed at the upper parts of one side of the same-side adjustment blocks (47) close to each other. A pin shaft (49) is threadedly connected to the middle of the adjustment block (47), and the pin shaft (49) is adapted to the limit hole (42).

Images