A conveniently installed three-phase asynchronous motor

Abstract

The present invention discloses an easy-to-install three-phase asynchronous motor, comprising an outer shell, a front end cover, a rear end cover, a rotating shaft, a cage rotor, a stator, a positioning assembly, and a guide fine-tuning mechanism; the present invention adds a guide fine-tuning mechanism, which drives a movable screw to move in the rotating threaded sleeve by rotating a rotating threaded sleeve, and at the same time, the movable guide rod is slidably engaged in a guide groove of a positioning cylinder through a guide block, thereby driving the entire positioning assembly to be fine-tuned along the axial position of the rotating shaft, thereby enabling the abutting position of abutting arc plates to be fine-tuned axially, so that the positions of the abutting arc plates and the annular abutting grooves on the outer sides of the rotating shaft are matched, and the use is more flexible.

Description

Technical Field

[0001] The invention relates to a three-phase asynchronous motor which is easy to install. Background Art

[0002] The three-phase asynchronous motor is a kind of induction motor. It is a type of motor that is powered by 380V three-phase alternating current. Since the rotor and the stator rotating magnetic field of the easy-to-install three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called an easy-to-install three-phase asynchronous motor. The speed of the rotor of the easy-to-install three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion. The rotating shaft of the existing motor is generally connected to the front and rear end covers through a rotating bearing to fix the rotating shaft. The rotating shaft of such a connection structure will produce a certain amount of shaking due to wear after a period of use, and the installation of the rotating shaft is relatively cumbersome. In addition, the bearings on the rotating shaft are generally fixed to the front and rear end covers by screws. Once the screws are rusted during disassembly, it will increase the difficulty of disassembly and maintenance. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention solves the problem of providing a three-phase asynchronous motor which is easy to install and has flexible use, quick and convenient installation of the rotating shaft and a stable structure.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A convenient installation three-phase asynchronous motor comprises an outer shell, a front end cover, a rear end cover, a rotating shaft, a cage rotor, a stator, a positioning assembly, and a guide fine-tuning mechanism; the front end cover and the rear end cover are respectively installed at the front and rear ends of the outer shell; the stator is sleeved and fixed around the inner wall of the outer shell; the rotating shaft is connected to the internal axis of the outer shell; the cage rotor is installed on the rotating shaft; the cage rotor is located at the internal axis of the stator; the inner end of the rotating shaft is rotatably clamped and installed inside the rear end cover; a cooling fan is provided on the inner end of the rotating shaft; the cooling fan is located inside the connection between the outer shell and the rear end cover; a limiting ring is provided on the rotating shaft; the outer side of the limiting ring abuts against the inner side wall of the front end cover; the rotating The outer end of the moving shaft passes through the front end cover and extends to the outside of the front end cover; a positioning assembly is respectively installed on the upper and lower sides of the outer side of the front end cover; the positioning assembly comprises an internal threaded barrel, a driving rod, an external threaded block, a clamping rod, an abutting arc plate, an annular elastic body, a clamping ring body, and a sliding clamping rod; the internal threaded barrel is fixedly installed on the outer side surface of the front end cover; the external threaded block is threadedly connected to the inside of the internal threaded barrel and rotates out from the inner end of the internal threaded barrel; the driving rod is installed at the outer end of the external threaded block, and the clamping rod is installed at the inner end of the external threaded block; the outer end of the driving rod extends from the internal threaded barrel; the inner end of the clamping rod extends to the inner side of the internal threaded barrel, and the inner end of the clamping rod is rotatably clamped in the middle of the outer end of the abutting arc plate; the inner An annular elastic body is fixedly installed around the inner end of the threaded cylinder; the inner end of the annular elastic body is elastically abutted and fixed around the outer end surface of the abutting arc plate; an annular abutting groove is provided on the outer side of the rotating shaft; the upper and lower sides of the annular abutting groove on the outer side of the rotating shaft are clamped and abutted by the abutting arc plate respectively; a clamping ring groove is provided on the driving rod; a clamping ring tooth is provided around the inner side of the clamping ring body; the driving rod is rotatably clamped on the clamping ring tooth on the inner side of the clamping ring body through the clamping ring groove on the outer side; the clamping ring body is located inside the internal threaded cylinder; a sliding clamping rod is respectively installed on both sides of the clamping ring body; a clamping sliding groove is respectively provided on both sides of the inner side of the internal threaded cylinder; one end of the sliding clamping rod is fixed On the side of the clamping ring body, the other end is slidably clamped on the clamping sliding groove of the internal threaded tube; the outer side of the internal threaded tube is connected to the outer side of the front end cover through a guide fine-tuning mechanism; the guide fine-tuning mechanism includes a rotating threaded sleeve, a movable screw, a positioning sleeve, and a movable guide rod; the positioning sleeve is fixedly installed on the outer side of the front end cover; the rotating threaded sleeve is rotatably clamped on the outer side of the front end cover; the movable screw and the movable guide rod are installed on the outer side of the internal threaded tube; the movable screw is threadedly connected in the rotating threaded sleeve; a guide block is provided at the end of the movable guide rod; a guide groove is provided inside the positioning tube; the guide block is slidably clamped in the guide groove of the positioning tube; the cross-sections of the guide block and the guide groove are both rectangular structures.

[0006] Furthermore, the maximum diameters of the driving rod and the clamping rod are both smaller than the diameter of the external thread block.

[0007] Furthermore, the upper end of the abutting arc plate is provided with abutting protrusions at the front and rear ends respectively; and the lower end of the annular elastic body is elastically abutted and fixed on the abutting protrusions.

[0008] Furthermore, the annular abutment groove is coated with a polytetrafluoroethylene coating.

[0009] Furthermore, a positioning rod is respectively provided on the upper and lower sides of the interior of the rear end cover; a connecting tube is installed between the positioning rods; the inner end of the rotating shaft is inserted and installed in the connecting tube; an abutting elastic body is provided in the connecting tube; the abutting elastic body elastically presses on the inner end of the rotating shaft; and a polytetrafluoroethylene coating is provided in the connecting tube.

[0010] Furthermore, a driving handle is provided at the upper end of the driving rod; a rotating clamping groove is provided in the middle of the upper end of the abutting arc plate; a rotating clamping tooth is provided at the lower end of the clamping rod; the clamping rod is rotatably clamped in the rotating clamping groove in the middle of the upper end of the abutting arc plate through the rotating clamping tooth at the lower end.

[0011] Furthermore, the rear end cover is provided with a vent; and the front end of the outer shell is evenly provided with vents around it.

[0012] Furthermore, an annular gap is provided around the outer side of the cage rotor and around the inner side of the stator.

[0013] Furthermore, the front end cover and the rear end cover are fixedly mounted on the front end and the rear end of the outer shell by screws respectively.

[0014] Beneficial effects of the present invention

[0015] 1. The present invention adds a guide fine-tuning mechanism, which drives the movable screw to move in the rotating threaded sleeve by rotating the rotating threaded sleeve, and at the same time, the movable guide rod is slidably engaged in the guide groove of the positioning cylinder through the guide block, thereby driving the entire positioning assembly to be fine-tuned along the axial position of the rotating shaft, so that the pressing position of the abutting arc plate can be fine-tuned axially, so that the position of the abutting arc plate and the annular abutting groove on the outer side of the rotating shaft can be matched, which is more flexible to use.

[0016] 2. The present invention rotates the driving rod to drive the external threaded block to rotate and pass through the inner end of the internal threaded tube, and at the same time the driving rod is rotated and clamped on the clamping ring body, and the clamping ring body slides toward the inner end on the clamping sliding groove of the internal threaded tube through the sliding clamping rod. When the external threaded block is separated from the threaded engagement constraint of the internal threaded tube, the annular elastic body will directly press the abutting arc plate against the upper and lower sides of the annular abutting groove on the outer side of the rotating shaft through elasticity. When the annular elastic body presses the abutting arc plate, the clamping ring body still maintains the sliding clamping structure on the clamping sliding groove of the internal threaded tube through the sliding clamping rod. In this way, the annular elastic body will obtain a guiding and limiting effect when pressing the abutting arc plate, which makes the annular elastic body more radially stable when pressing the abutting arc plate, without shaking, and the structure is more stable.

[0017] 3. The present invention changes the installation structure of the rotating shaft of the traditional motor. The rear end of the rotating shaft is directly plugged and installed in the connecting tube fixed in the rear end cover to achieve the initial positioning of the installation. Then the front end of the rotating shaft passes through the front end cover, and the outer side of the limiting ring body on the rotating shaft abuts against the inner side wall of the front end cover to achieve secondary positioning. Finally, the driving rod in the positioning assembly is rotated to drive the external thread block to rotate and pass through the inner end of the internal thread tube. When the external thread block is separated from the thread engagement constraint of the internal thread tube, the annular elastic body will directly press the abutting arc plate against the upper and lower sides of the annular abutting groove on the outer side of the rotating shaft through elasticity, thereby achieving the final axial and lateral positioning of the rotating shaft. The present invention makes the transmission performance of the entire rotating shaft more stable through the elastic abutment installation structure.

[0018] 4. The installation and disassembly of the rotating shaft of the present invention are very convenient. The rear end of the rotating shaft is directly inserted into the connecting tube fixed in the rear end cover. Then, after the front end cover is installed, the driving rod is directly rotated to make the external thread block disengage from the thread engagement constraint of the internal thread tube. The annular elastic body will directly press the abutment arc plate against the upper and lower sides of the annular abutment groove on the outside of the rotating shaft through elasticity, thereby realizing the final axial and lateral positioning of the rotating shaft; when disassembly is required, the driving rod is first pulled to make the external thread block reach the inner port of the internal thread tube, and then the driving rod is rotated to drive the thread of the external thread block to rotate into the inside of the internal thread tube, thereby driving the abutment arc plate to disengage from the annular abutment groove of the rotating shaft. At this time, the annular elastic body is in a continuously compressed state. Then, the rotating shaft can be directly pulled out after the front end cover is removed. The installation and disassembly are very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is an enlarged structural schematic diagram of the positioning assembly and the guide fine-adjustment mechanism of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure in which the positioning assembly is separated from the rotating shaft of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of locking the rotating shaft of the positioning assembly of the present invention.

[0023] Figure 5 It is an enlarged structural schematic diagram of the clamping ring body and the sliding clamping rod of the present invention.

[0024] Figure 6 It is an enlarged structural schematic diagram of the guide fine-tuning mechanism of the present invention.

[0025] Figure 7 It is a cross-sectional view of the connection between the annular abutment groove and the abutment arc plate of the rotating shaft of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 7As shown, a convenient installation three-phase asynchronous motor comprises an outer shell 1, a front end cover 3, a rear end cover 2, a rotating shaft 4, a cage rotor 7, a stator 6, a positioning assembly 5, and a guide fine-tuning mechanism 8; the front and rear ends of the outer shell 1 are respectively installed with the front end cover 3 and the rear end cover 2; the stator 6 is sleeved and fixed around the inner wall of the outer shell 1; the rotating shaft 4 is connected to the internal axis of the outer shell 1; the cage rotor 7 is installed on the rotating shaft 4; the cage rotor 7 is located at the internal axis of the stator 6; the inner end of the rotating shaft 4 is rotatably connected and installed inside the rear end cover 2; a cooling fan 41 is provided on the inner end of the rotating shaft 4; the cooling fan 41 is located inside the connection between the outer shell 1 and the rear end cover 2; a limiting ring body 42 is provided on the rotating shaft 4; the outer side of the limiting ring body 42 abuts against the inner side wall of the front end cover 3; the outer end of the rotating shaft 4 passes through the front end cover 3 and extends to the outside of the front end cover 3; a positioning assembly 5 is respectively installed on the upper and lower sides of the outer side of the front end cover 3; the positioning assembly 5 comprises an internal threaded cylinder 52, The driving rod 51, the external thread block 53, the clamping rod 54, the abutting arc plate 55, the annular elastic body 56, the clamping ring body 57, and the sliding clamping rod 58; the internal thread barrel 52 is fixedly installed on the outer surface of the front end cover 3; the external thread block 53 is threadedly connected to the inside of the internal thread barrel 52 and rotates out from the inner end of the internal thread barrel 52; the driving rod 51 is installed at the outer end of the external thread block 53, and the clamping rod 54 is installed at the inner end of the external thread block 53; the outer end of the driving rod 51 extends from the internal thread barrel 52 The inner end of the clamping rod 54 extends to the inner side of the internal threaded tube 52, and the inner end of the clamping rod 54 is rotatably clamped in the middle of the outer end of the abutting arc plate 55; an annular elastic body 56 is fixedly installed around the inner end of the internal threaded tube 52; the inner end of the annular elastic body 56 is elastically abutted and fixed around the outer end surface of the abutting arc plate 55; an annular abutting groove 43 is provided around the outer side of the rotating shaft 4; the upper and lower sides of the annular abutting groove 43 around the outer side of the rotating shaft 4 are clamped and abutted by the abutting arc plate 55 respectively.The driving rod 51 is provided with a snap ring groove 511; the inner side of the snap ring body 57 is provided with snap ring teeth 571; the driving rod 51 is rotatably snapped to the snap ring teeth 571 on the inner side of the snap ring body 57 through the snap ring grooves 511 on the outer sides; the snap ring body 57 is located inside the internal threaded tube 52; a sliding snap rod 58 is installed on both sides of the snap ring body 57; a snap sliding groove 521 is provided on both sides of the inner side of the internal threaded tube 52; one end of the sliding snap rod 58 is fixed to the side of the snap ring body 57, and the other end is slidably snapped to the snap sliding groove 521 of the internal threaded tube 52; the outer side of the internal threaded tube 52 is respectively connected to a guide fine-tuning mechanism 8 is connected to the outer side of the front end cover 3; the guide fine-tuning mechanism 8 includes a rotating threaded sleeve 81, a movable screw 83, a positioning cylinder 82, and a movable guide rod 84; the positioning cylinder 82 is fixedly installed on the outer side of the front end cover 3; the rotating threaded sleeve 81 is rotatably clamped on the outer side of the front end cover 3; the movable screw 83 and the movable guide rod 84 are installed on the outer side of the internal threaded sleeve 52; the movable screw 83 is threadedly connected in the rotating threaded sleeve 81; a guide block 85 is provided at the end of the movable guide rod 84; a guide groove 821 is provided inside the positioning cylinder 82; the guide block 85 is slidably clamped in the guide groove 821 of the positioning cylinder 82; the cross-sections of the guide block 85 and the guide groove 821 are both rectangular structures.

[0028] like Figures 1 to 7 As shown, it is further preferred that the maximum diameters of the driving rod 51 and the clamping rod 54 are both smaller than the diameter of the external thread block 53. It is further preferred that the upper end of the abutting arc plate 55 is provided with abutting protrusions 552 at the front and rear, respectively; the lower end of the annular elastic body 56 is elastically abutted and fixed on the abutting protrusion 552. It is further preferred that the annular abutting groove 43 is coated with a polytetrafluoroethylene coating. Further, a positioning rod 21 is provided on the upper and lower sides of the interior of the rear end cover 2, respectively; a connecting tube 22 is installed between the positioning rods 21; the inner end of the rotating shaft 4 is plugged and installed in the connecting tube 22; an abutting elastic body 23 is provided in the connecting tube 22; the abutting elastic body 23 is elastically pressed against the inner end of the rotating shaft 4; and a polytetrafluoroethylene coating is provided in the connecting tube 22. Further, a driving handle is provided at the upper end of the driving rod 51; a rotating engaging groove 551 is provided in the middle of the upper end of the abutting arc plate 55; a rotating engaging tooth 541 is provided at the lower end of the engaging rod 54; the engaging rod 54 is rotatably engaged in the rotating engaging groove 551 in the middle of the upper end of the abutting arc plate 55 through the rotating engaging tooth 541 at the lower end. Further preferably, a vent 11 is provided on the rear end cover 2; and vents 11 are evenly provided around the front end of the outer shell 1. Further, an annular gap is provided around the outer side of the cage rotor 7 and around the inner side of the stator 6. Further, the front end cover 3 and the rear end cover 2 are fixedly mounted on the front end and the rear end of the outer shell 1 by screws, respectively.

[0029] The present invention adds a guide fine-tuning mechanism 8, which drives the movable screw 83 to move in the rotating threaded sleeve 81 by rotating the rotating threaded sleeve 81, and at the same time, the movable guide rod 84 is slidably engaged in the guide groove 821 of the positioning tube 82 through the guide block 85, thereby driving the entire positioning assembly 5 to be fine-tuned along the axial position of the rotating shaft 4, so that the pressing position of the abutting arc plate 55 can be fine-tuned axially, so that the position of the abutting arc plate 55 and the annular abutting groove 43 on the outer side of the rotating shaft 4 are matched, and the use is more flexible.

[0030] The present invention rotates the driving rod 51 to drive the external thread block 53 to rotate and pass through the inner end of the internal thread tube 52. At the same time, the driving rod 51 is rotated and clamped on the clamping ring body 57, and the clamping ring body 57 slides toward the inner end on the clamping sliding groove 521 of the internal thread tube 52 through the sliding clamping rod 58. When the external thread block 53 is separated from the thread engagement constraint of the internal thread tube 52, the annular elastic body 56 will directly press the abutting arc plate 55 against the annular abutting plate 55 on the outer side of the rotating shaft 4 through elasticity. On the upper and lower sides of the connecting groove 43, when the annular elastic body 56 is pressed against the arc plate 55, since the clamping ring body 56 still maintains the sliding clamping structure on the clamping sliding groove 521 of the internal threaded tube 52 through the sliding clamping rod 58, the annular elastic body 56 can obtain a guiding limiting effect when it is pressed against the arc plate 55, which makes the radial direction of the annular elastic body 56 more stable when it is pressed against the arc plate 55, without shaking, and the structure is more stable.

[0031] The present invention changes the installation structure of the rotating shaft 4 of the traditional motor. The rear end of the rotating shaft 4 is directly plugged and installed in the connecting tube 22 fixed in the rear end cover 2 to achieve the initial positioning of the installation. Then the front end of the rotating shaft 4 passes through the front end cover 3, and the outer side of the limiting ring body 42 on the rotating shaft 4 abuts against the inner side wall of the front end cover 3 to achieve secondary positioning. Finally, the driving rod 51 in the positioning component 5 is rotated to drive the external thread block 53 to rotate and pass through the inner end of the internal thread tube 52. When the external thread block 53 is separated from the thread engagement constraint of the internal thread tube 52, the annular elastic body 56 will directly press the abutting arc plate 55 against the upper and lower sides of the annular abutting groove 43 on the outer side of the rotating shaft 4 through elasticity, so as to achieve the final axial and lateral positioning of the rotating shaft 4. The present invention makes the transmission performance of the entire rotating shaft 4 more stable through the elastic abutment installation structure.

[0032] The rotating shaft 4 of the present invention is very convenient to install and disassemble. The rear end of the rotating shaft 4 is directly inserted into the connecting tube 22 fixed in the rear end cover 2. Then, after the front end cover 3 is installed, the driving rod 51 is directly rotated to make the external thread block 53 disengage from the thread engagement bondage of the internal thread tube 52. The annular elastic body 56 will directly press the abutting arc plate 55 against the upper and lower sides of the annular abutting groove 43 on the outer side of the rotating shaft 4 through elasticity, thus realizing the final axial and lateral positioning of the rotating shaft 4; when it is necessary to disassemble, the driving rod 51 is first pulled to make the external thread block 53 reach the inner port of the internal thread tube 52, and then the driving rod 51 is rotated to drive the external thread block 53 to rotate into the inside of the internal thread tube 52, so as to drive the abutting arc plate 55 to disengage from the annular abutting groove 43 of the rotating shaft 4. At this time, the annular elastic body 56 is in a continuously compressed state. Then, the rotating shaft 4 can be directly pulled out after the front end cover 3 is disassembled.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-phase asynchronous motor with convenient installation, characterized in that: The invention comprises an outer shell, a front end cover, a rear end cover, a rotating shaft, a cage rotor, a stator, a positioning assembly, and a guide fine-tuning mechanism; the front end cover and the rear end cover are respectively installed at the front and rear ends of the outer shell; the stator is sleeved and fixed around the inner wall of the outer shell; the rotating shaft is connected to the internal axis of the outer shell; the cage rotor is installed on the rotating shaft; the cage rotor is located at the internal axis of the stator; the inner end of the rotating shaft is rotatably clamped and installed inside the rear end cover; a cooling fan is provided on the inner end of the rotating shaft; the cooling fan is located inside the connection between the outer shell and the rear end cover; a limiting ring is provided on the rotating shaft; the outer side of the limiting ring abuts against the inner side wall of the front end cover; the outer end of the rotating shaft passes through the front end cover and extends to the outside of the front end cover; the outer A positioning assembly is installed on the upper and lower sides respectively; the positioning assembly comprises an internal threaded cylinder, a driving rod, an external threaded block, a clamping rod, an abutting arc plate, an annular elastic body, a clamping ring body, and a sliding clamping rod; the internal threaded cylinder is fixedly installed on the outer side surface of the front end cover; the external threaded block is threadedly rotatably connected to the inside of the internal threaded cylinder and rotates out from the inner end of the internal threaded cylinder; the driving rod is installed on the outer end of the external threaded block, and the clamping rod is installed on the inner end of the external threaded block; the outer end of the driving rod extends from the internal threaded cylinder; the inner end of the clamping rod extends to the inner side of the internal threaded cylinder, and the inner end of the clamping rod is rotatably clamped in the middle of the outer end of the abutting arc plate; an annular elastic body is fixedly installed around the inner end of the internal threaded cylinder; the inner end of the annular elastic body is elastically abutted and fixed to the abutting arc plate The outer end surface is surrounded; an annular abutment groove is provided on the outer side of the rotating shaft; the upper and lower sides of the annular abutment groove on the outer side of the rotating shaft are respectively clamped and abutted by abutment arc plates; a clamping ring groove is provided on the driving rod; a clamping ring tooth is provided on the inner side of the clamping ring body; the driving rod is rotatably clamped on the clamping ring teeth on the inner side of the clamping ring body through the clamping ring groove on the outer side; the clamping ring body is located inside the internal threaded cylinder; a sliding clamping rod is respectively installed on both sides of the clamping ring body; a clamping sliding groove is respectively provided on both sides of the interior of the internal threaded cylinder; one end of the sliding clamping rod is fixed to the side of the clamping ring body, and the other end is slidably clamped on the clamping sliding groove of the internal threaded cylinder; the outer side of the internal threaded cylinder is connected to the front end cover through a guide fine-tuning mechanism The outer side of the guide fine-tuning mechanism includes a rotating threaded sleeve, a moving screw, a positioning cylinder, and a moving guide rod; the positioning cylinder is fixedly installed on the outer side of the front end cover; the rotating threaded sleeve is rotatably clamped on the outer side of the front end cover; the moving screw and the moving guide rod are installed on the outer side of the internal threaded sleeve; the moving screw is threadedly connected to the rotating threaded sleeve; a guide block is provided at the end of the moving guide rod; a guide groove is provided inside the positioning sleeve; the guide block is slidably clamped in the guide groove of the positioning sleeve; the cross-sections of the guide block and the guide groove are both rectangular structures; the maximum diameters of the driving rod and the clamping rod are smaller than the diameter of the external thread block; the upper ends of the abutting arc plate are respectively provided with abutting protrusions at the front and rear; the lower end of the annular elastic body is elastically abutted and fixed on the abutting protrusion;The annular abutment groove is coated with a polytetrafluoroethylene coating. ; 2. The easy-to-install three-phase asynchronous motor according to claim 1, characterized in that: A positioning rod is respectively provided on the upper and lower sides of the interior of the rear end cover; a connecting tube is installed between the positioning rods; the inner end of the rotating shaft is inserted and installed in the connecting tube; an abutting elastic body is provided in the connecting tube; the abutting elastic body elastically presses on the inner end of the rotating shaft; a polytetrafluoroethylene coating is provided in the connecting tube.

3. The easy-to-install three-phase asynchronous motor according to claim 1, characterized in that: A driving handle is provided at the upper end of the driving rod; a rotating clamping groove is provided in the middle of the upper end of the abutting arc plate; a rotating clamping tooth is provided at the lower end of the clamping rod; the clamping rod is rotatably clamped in the rotating clamping groove in the middle of the upper end of the abutting arc plate through the rotating clamping tooth at the lower end.

4. The easy-to-install three-phase asynchronous motor according to claim 1, characterized in that: The rear end cover is provided with a vent; and the front end of the outer shell is evenly provided with vents around it.

5. The easy-to-install three-phase asynchronous motor according to claim 1, characterized in that: An annular gap is arranged around the outer side of the cage-type rotor and around the inner side of the stator.

6. The easy-to-install three-phase asynchronous motor according to claim 1, characterized in that: The front end cover and the rear end cover are respectively fixedly mounted on the front end and the rear end of the outer shell by screws.

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