Alternating-current synchronous gear motor and control method thereof

Abstract

The invention relates to the technical field of gear motors, in particular to an alternating-current synchronous gear motor and a control method thereof.The alternating-current synchronous gear motor comprises an alternating-current synchronous motor, a combined pressing assembly and a lubricating assembly, and a reduction gearbox is fixedly installed on one side of the alternating-current synchronous motor through bolts; the butt joint shaft sleeve capable of being matched with the speed reduction input shaft is arranged between the motor output shaft and the speed reduction input shaft, and after the alternating-current synchronous motor and the speed reduction box are assembled and combined, the butt joint shaft sleeve and the speed reduction input shaft can be connected more tightly through the combined pressing assembly; the situation that a movable gap between the butt joint shaft sleeve and the speed reduction input shaft is large due to a simple inserting mode is avoided, the synchronous driving effect of the motor output shaft and the speed reduction input shaft is improved, in addition, under the matching effect of the lubricating assembly, the combination position of the speed reduction input shaft and the butt joint shaft sleeve can be lubricated, abrasion between the speed reduction input shaft and the butt joint shaft sleeve is further reduced, and the service life is prolonged. The transmission stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of speed reduction motors, and specifically to an AC synchronous speed reduction motor and its control method. Background Art

[0002] The AC synchronous speed reduction motor combines the stable speed characteristic of the AC synchronous motor and the torque boosting function of the speed reduction device, and is widely used in industrial fields and various mechanical equipment that require precise speed control and large output torque, such as ice shaving machines, ice crushers, and other equipment; When the speed reduction motor is in use, the motor needs to be used in cooperation with the speed reduction mechanism. When the two are assembled, the speed reduction mechanism is usually fixed to the motor housing by bolts, and the output shaft of the motor is docked and matched with the input shaft of the speed reduction mechanism. Since the connection position is often inside the housing, during the connection operation, it is mostly in the form of mutual insertion. Since the motor main shaft is the main driving force and the input shaft of the speed reduction mechanism rotates passively, the clearance between the two connection parts is often not tight enough. Over time, it is easy to have wear and tear, affecting the transmission quality. Summary of the Invention

[0003] The purpose of the present invention is to provide an AC synchronous speed reduction motor and its control method to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An AC synchronous speed reduction motor, comprising: An AC synchronous motor, on one side of which a speed reduction box is fixedly installed by bolts. On one side inside the speed reduction box, a transmission cavity is opened. On one side inside the transmission cavity, an external control slot is penetrated. Inside the external control slot, a speed reduction input shaft is rotatably arranged. On one side of the AC synchronous motor, there is a motor output shaft, and the motor output shaft is connected to the speed reduction input shaft through a docking component. The docking component includes a docking shaft sleeve; A combined pressing component, which is arranged inside the speed reduction input shaft. The combined pressing component includes a tension rod, a rhombic connecting block, a convex head pull rod, and several telescopic hanging blocks; A lubrication component, which is arranged above the transmission cavity inside the speed reduction box. The lubrication component includes an oil storage cavity and a plugging piston.

[0005] Preferably, several key grooves are opened on the outer side of the motor output shaft. The docking shaft sleeve is sleeved on the motor output shaft. On one side of the docking shaft sleeve sleeved on the motor output shaft, several key bars are provided. The several key bars are respectively inserted into the several key grooves, and both the motor output shaft and the docking shaft sleeve are movably inserted into the transmission cavity of the speed reduction box.

[0006] Preferably, an assembly screw is inserted through the center of the motor output shaft placed inside the transmission cavity by thread. On one side of the assembly screw, there is a pressing block, and one side surface of the pressing block abuts against the key bars of several docking shaft sleeves.

[0007] Preferably, one side of the deceleration input shaft is placed in the transmission cavity and is provided with an input gear. A plurality of docking teeth are symmetrically arranged on one side of the deceleration input shaft and the docking sleeve located in the transmission cavity. The plurality of docking teeth of the deceleration input shaft and the docking sleeve are arranged in a mutually staggered and inserted manner.

[0008] Preferably, diamond-shaped grooves and adjustment grooves are respectively formed through both sides of the deceleration input shaft. A separation ring is arranged between the diamond-shaped groove and the adjustment groove. The tension rod movably penetrates through the center of the separation ring. The diamond-shaped connecting block is located in the diamond-shaped groove and is arranged on one side of the tension rod. A first spring is sleeved between the diamond-shaped connecting block and the separation ring.

[0009] Preferably, a fitting groove is formed near the center of the docking sleeve in the diamond-shaped connecting block. A plurality of telescopic cavities are formed in the fitting groove. A plurality of telescopic hanging blocks are respectively movably inserted into the plurality of telescopic cavities through anti-detachment blocks. Hanging springs are arranged on one side of each telescopic hanging block inserted into the telescopic cavity. A convex head pull rod is arranged at the center of the assembly screw rod. The convex block end of the convex head pull rod is inserted into the fitting groove of the diamond-shaped connecting block. Both end faces of the convex head pull rod inserted into the fitting groove are conical structures. One side of each of the plurality of telescopic hanging blocks is respectively inserted into the fitting groove and is hooked to one side surface of the convex block of the convex head pull rod.

[0010] Preferably, a limiting ring is movably sleeved on the tension rod. The limiting ring movably penetrates through the separation ring. A trapezoidal abutting platform is arranged on the side of the limiting ring away from the diamond-shaped connecting block. The trapezoidal abutting platform has two abutting end faces. One of the abutting end faces abuts against the separation ring. A second spring is arranged between the other abutting end face and the separation ring. A plurality of restraint insertion rods are symmetrically arranged on the side of the limiting ring close to the diamond-shaped connecting block. The plurality of restraint insertion rods are respectively movably inserted into one side of the diamond-shaped connecting block. The plurality of telescopic hanging blocks are arranged corresponding to the plurality of restraint insertion rods. Constraint slots are formed on one side of each telescopic hanging block close to the restraint insertion rod. When the abutting end face of the limiting ring abuts against the separation ring, the restraint insertion rods are inserted into the constraint slots.

[0011] Preferably, a pulling screw sleeve is threadedly sleeved on the side of the tension rod away from the diamond-shaped connecting block. One side of the pulling screw sleeve contacts the trapezoidal abutting platform of the limiting ring. A plugging block is arranged on one side of the external control groove.

[0012] Preferably, an oil dripping piston tube is vertically communicated with the lower end on the side of the docking teeth in the oil storage cavity. A plugging piston is movably inserted into the oil dripping piston tube. A synchronous piston rod is vertically arranged at the center of the upper end of the plugging piston. A button groove is formed at the upper end of the speed reducer. The synchronous piston rod is movably inserted into the button groove and is provided with a piston button. A return spring is sleeved below the piston button of the synchronous piston rod in the button groove.

[0013] A control method for an AC synchronous reduction motor includes the following steps: Step 1: Before the AC synchronous motor and the reduction gearbox are fixedly assembled by bolts, the docking bushing with a key bar is pressed and fixed to the motor output shaft through an assembly screw rod. Then, the docking teeth of the docking bushing are misaligned with the docking teeth of the reduction input shaft, and the two are brought close together, and the AC synchronous motor and the reduction gearbox are assembled by bolts. Step 2: When assembling the docking teeth of the reduction input shaft and the docking bushing, the convex head pull rod convex block of the assembly screw rod first retracts into the telescopic cavity through several telescopic hanging blocks on the top surface of the conical structure, and then pops out after the convex block crosses the telescopic hanging blocks to hang the convex block of the convex head pull rod. Step 3: Then rotate the pulling sleeve to move horizontally on the tension rod through the thread. When the pulling sleeve contacts the trapezoidal abutting platform of the limiting ring, the elastic pressure of the first spring is greater than the elastic pressure of the second spring. At this time, the pulling sleeve pushes the trapezoidal abutting platform to squeeze the second spring and then contact, and at the same time, the constraint insertion rod of the limiting ring is inserted into the constraint slot of several telescopic hanging blocks to limit the movement of the telescopic hanging blocks. Step 4: Then, as the pulling sleeve continues to rotate, the limiting ring remains stationary, and the tension rod drives the rhombic connecting block and the telescopic hanging blocks to move towards the position of the separating ring. At this time, several telescopic hanging blocks pull the assembly screw rod and the motor output shaft to move towards the reduction input shaft, so that the motor output shaft and the reduction input shaft are kept pressed and fixed.

[0014] Compared with the prior art, the beneficial effects of the present invention are: By arranging a docking bushing that can cooperate with the reduction input shaft between the motor output shaft and the reduction input shaft, after the AC synchronous motor and the reduction gearbox are assembled and combined, through the combined pressing assembly, the connection between the docking bushing and the reduction input shaft can be made closer, avoiding a large movement gap between the docking bushing and the reduction input shaft caused by a simple plug-in form, improving the synchronous driving effect of the motor output shaft and the reduction input shaft. In addition, under the cooperation of the lubrication assembly, the combined position of the reduction input shaft and the docking bushing can be lubricated, further reducing the wear between the two and improving the transmission stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present invention; Figure 2 is a partial side-cut structure schematic diagram of the present invention; Figure 3 is the present invention Figure 2 schematic diagram of part A; Figure 4 is the present invention Figure 3 schematic diagram of part B; Figure 5 is the present invention Figure 4 schematic diagram of part C; Figure 6 is the present inventionFigure 3 Schematic diagram of part D; Figure 7 Schematic diagram of the installation structure of the docking bushing of the present invention; Figure 8 Exploded view of the connection between the speed reduction input shaft and the motor output shaft of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of part E; Figure 10 For the present invention Figure 9 Schematic diagram of part F.

[0016] In the figure: AC synchronous motor 1, speed reduction box 2, motor output shaft 3, external control slot 4, speed reduction input shaft 5, input gear 6, docking bushing 7, key bar 9, assembly screw 10, docking tooth 11, tension rod 12, rhombic connection block 13, mating slot 14, convex head pull rod 15, telescopic cavity 16, telescopic hanging block 17, hanging spring 18, restraint slot 19, limiting ring 20, separating ring 21, first spring 22, second spring 23, pulling screw sleeve 24, oil storage cavity 25, oil dripping piston tube 26, sealing piston 27, button slot 28, synchronous piston rod 29, piston button 30, return spring 31, restraint insertion rod 32. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to the attached Figure 1-10 , and the following technical solutions are provided in this application.

[0019] Embodiment 1: AC synchronous reduction motor, including an AC synchronous motor 1, a speed reduction box 2 is fixedly installed on one side of the AC synchronous motor 1 through bolts, a transmission cavity is opened on one side inside the speed reduction box 2, an external control slot 4 is penetrated and opened on one side inside the transmission cavity, a speed reduction input shaft 5 is rotatably arranged in the external control slot 4 and inserted into the transmission cavity, a motor output shaft 3 is arranged on one side of the AC synchronous motor 1, the motor output shaft 3 is connected to the speed reduction input shaft 5 through a docking component, the docking component includes a docking bushing 7, a plurality of key grooves are opened on the outer side of the motor output shaft 3, the docking bushing 7 is sleeved on the motor output shaft 3, a plurality of key bars 9 are arranged on one side of the docking bushing 7 sleeved on the motor output shaft 3, the plurality of key bars 9 are respectively inserted into the plurality of key grooves, and both the motor output shaft 3 and the docking bushing 7 are movably inserted into the transmission cavity of the speed reduction box 2. When the docking bushing 7 is placed in the transmission cavity, the lubrication operation of the transmission cavity can synchronously supply oil to the docking bushing 7.

[0020] The motor output shaft 3 is placed in the transmission cavity and is provided with an assembly screw 10 through threaded insertion at the center. A clamping block is provided on one side of the assembly screw 10, and one side of the clamping block is arranged to abut against the key strips 9 of a plurality of docking sleeves 7. One side of the reduction input shaft 5 is placed in the transmission cavity and is provided with an input gear 6. The reduction input shaft 5 and the docking sleeve 7 are both symmetrically provided with a plurality of docking teeth 11 on one side of the transmission cavity. The reduction input shaft 5 and the docking sleeve 7 are staggered and inserted with each other. The docking sleeve 7 is combined with the reduction input shaft 5 through the docking teeth 11. At this time, when the motor output shaft 3 drives the docking sleeve 7 to rotate, the docking sleeve 7 can drive the input gear 6 connected to the reduction input shaft 5 to rotate, and then the input gear 6 cooperates with the multiple pairs of gears in the reduction box 2 to perform speed change operation.

[0021] A combined clamping assembly is provided to clamp and maintain the combined plug-in form of the docking sleeve 7 and the docking teeth 11 of the reduction input shaft 5. The combined clamping assembly is provided in the reduction input shaft 5, and the combined clamping assembly includes a tension rod 12, a prismatic connection block 13, a convex pull rod 15 and a plurality of telescopic hanging blocks 17. Prismatic grooves and adjustment grooves are respectively provided on both sides of the reduction input shaft 5, and a separation ring 21 is provided between the prismatic groove and the adjustment groove. The tension rod 12 movably passes through the center of the separation ring 21, the prismatic connection block 13 is located in the prismatic groove and is provided on one side of the tension rod 12, and a first spring 22 is sleeved between the prismatic connection block 13 and the separation ring 21. The prismatic connection block 13 is prismatic, and the prismatic connection block 13 can only move horizontally and cannot rotate. The first spring 22 can maintain the basic posture of the prismatic connection block 13.

[0022] A matching groove 14 is provided in the prismatic connecting block 13 near the center of the docking sleeve 7, and a plurality of telescopic cavities 16 are provided in the matching groove 14. A plurality of telescopic hanging blocks 17 are respectively movably plugged into the plurality of telescopic cavities 16 through anti-dropping blocks, and a hanging spring 18 is provided on one side of the telescopic hanging block 17 plugged into the telescopic cavity 16. A convex pull rod 15 is provided in the center of the assembly screw 10, and one end of the convex block of the convex pull rod 15 is plugged into the matching groove 14 of the prismatic connecting block 13, and both end surfaces of the convex pull rod 15 plugged into the matching groove 14 are Conical structure, one side of several telescopic hanging blocks 17 are respectively inserted into the matching groove 14 and hung with one side of the protrusion of the protruding rod 15, the protrusion of the protruding rod 15 can be inserted into the matching groove 14, when the telescopic hanging block 17 cannot be telescopic, the protrusion of the protruding rod 15 cannot be separated from the matching groove 14, at this time, when the telescopic hanging block 17 and the prismatic connecting block 13 hang and pull the protrusion of the protruding rod 15, the motor output shaft 3 and the docking sleeve 7 can be pulled through the protruding rod 15 and the assembly screw 10.

[0023] A limiting ring 20 is movably sleeved on the tension rod 12. The limiting ring 20 movably penetrates through the partition ring 21. A trapezoidal abutting platform is provided on one side of the limiting ring 20 away from the rhombic connection block 13. The trapezoidal abutting platform is provided with two abutting end faces. One of the abutting end faces abuts against the partition ring 21, and a second spring 23 is provided between the other abutting end face and the partition ring 21. A plurality of constraint insertion rods 32 are symmetrically provided on one side of the limiting ring 20 close to the rhombic connection block 13. The plurality of constraint insertion rods 32 are respectively movably inserted into one side of the rhombic connection block 13. A plurality of telescopic hanging blocks 17 are arranged corresponding to the plurality of constraint insertion rods 32. Constraint slots 19 are opened on one side of each telescopic hanging block 17 close to the constraint insertion rod 32. When the abutting end face of the limiting ring 20 abuts against the partition ring 21, the constraint insertion rods 32 are inserted into the constraint slots 19. A pulling nut 24 is threadedly sleeved on one side of the tension rod 12 away from the rhombic connection block 13. One side of the pulling nut 24 contacts the trapezoidal abutting platform of the limiting ring 20. A plugging block is provided on one side of the external control groove 4. The elastic pressure of the first spring 22 is greater than the elastic pressure of the second spring 23. When the limiting ring 20 compresses the second spring 23, the rhombic connection block 13 and the tension rod 12 remain in place.

[0024] Embodiment 2: On the basis of Embodiment 1, a lubricating assembly is provided to drip oil and lubricate the combined position of the mating teeth 11 of the reduction input shaft 5 and the mating shaft sleeve 7. The lubricating assembly is arranged above the transmission cavity in the reduction gearbox 2. The lubricating assembly includes an oil storage cavity 25 and a plugging piston 27. A drip oil piston tube 26 is vertically communicated and arranged at the lower end on one side of the mating teeth 11 in the oil storage cavity 25. The plugging piston 27 is movably inserted into the drip oil piston tube 26. A synchronous piston rod 29 is vertically provided at the center of the upper end of the plugging piston 27. A button groove 28 is opened at the upper end of the reduction gearbox 2. The synchronous piston rod 29 is movably inserted into the button groove 28 and is provided with a piston button 30. A return spring 31 is sleeved below the piston button 30 of the synchronous piston rod 29 in the button groove 28. When the lubricating oil in the oil storage cavity 25 flows out through the plugging piston 27 protruding from the drip oil piston tube 26, the lubricating oil will drip on the meshing position of the mating teeth 11 to form an oil film, avoiding unnecessary loss in the transmission between the motor output shaft 3 and the reduction input shaft 5 and damage to the reduction input shaft 5.

[0025] A control method for an AC synchronous reduction motor includes the following steps: Step 1: Before the AC synchronous motor 1 and the reduction gearbox 2 are fixedly assembled by bolts, the mating shaft sleeve 7 with the key strip 9 is tightly fixed to the motor output shaft 3 through the assembly screw 10. Then, the mating teeth 11 of the mating shaft sleeve 7 are misaligned with the mating teeth 11 of the reduction input shaft 5, and the AC synchronous motor 1 and the reduction gearbox 2 are assembled close to each other and by bolts. Step 2: When assembling the mating teeth 11 of the decelerating input shaft 5 and the mating shaft sleeve 7, the convex block of the convex head pull rod 15 of the assembling screw rod 10 first retracts into the telescopic cavity 16 through several telescopic hanging blocks 17 on the top surface of the conical structure. After the convex block passes over the telescopic hanging blocks 17, it pops out to hang the convex block of the convex head pull rod 15; Step 3: Then rotate the pulling sleeve 24 to move horizontally on the tension rod 12 through the thread. When the pulling sleeve 24 contacts the trapezoidal abutting platform of the limiting ring 20, the elastic pressure of the first spring 22 is greater than the elastic pressure of the second spring 23. At this time, the pulling sleeve 24 pushes the trapezoidal abutting platform to squeeze the second spring 23 and then contact, and at the same time, the restraining insertion rod 32 of the limiting ring 20 is inserted into the restraining slots 19 of several telescopic hanging blocks 17 to limit the movement of the telescopic hanging blocks 17; Step 4: Then, as the pulling sleeve 24 continues to rotate, the limiting ring 20 remains stationary, and the tension rod 12 drives the rhombic connecting block 13 and the telescopic hanging blocks 17 to move towards the position of the separating ring 21. At this time, several telescopic hanging blocks 17 pull the assembling screw rod 10 and the motor output shaft 3 towards the decelerating input shaft 5, so that the motor output shaft 3 and the decelerating input shaft 5 are kept pressed and fixed.

[0026] Step 5: The oil storage cavity 25 can provide lubricating oil for the gears in the transmission cavity after being used for a period of time. During normal use, by pressing the piston button 30, the synchronous piston rod 29 and the plugging piston 27 can be controlled to move downward, and the transmission cavity is connected to the oil storage cavity 25. At this time, the lubricating oil flowing down from the position of the drip piston tube 26 can accurately drip on the mating position of the mating teeth 11 of the decelerating input shaft 5 and the mating shaft sleeve 7, reducing the excessive loss between the two and improving the transmission performance. The plugging piston 27 can also be provided with an elastic drip hole to continuously drip oil slowly through the gap of the elastic rubber structure, and automatically continuously lubricate the mating teeth 11 during the normal use of the reduction gearbox 2.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. AC synchronous reduction motor, characterized in that: include: An AC synchronous motor (1), wherein a reduction box (2) is fixedly mounted on one side of the AC synchronous motor (1) by means of bolts, a transmission cavity is provided on one side of the reduction box (2), an external control slot (4) is provided through one side of the transmission cavity, a reduction input shaft (5) is inserted into the transmission cavity and rotated therein, a motor output shaft (3) is provided on one side of the AC synchronous motor (1), the motor output shaft (3) is connected to the reduction input shaft (5) via a docking assembly, and the docking assembly comprises a docking sleeve (7); A combined clamping assembly, the combined clamping assembly being arranged in the deceleration input shaft (5), the combined clamping assembly comprising a tension rod (12), a prismatic connecting block (13), a convex pull rod (15) and a plurality of telescopic hanging blocks (17); A lubrication assembly is arranged above the transmission chamber in the reduction box (2), and comprises an oil storage chamber (25) and a blocking piston (27).

2. The AC synchronous reduction motor according to claim 1, characterized in that: The motor output shaft (3) is provided with a plurality of key slots on its outer side, the docking sleeve (7) is sleeved on the motor output shaft (3), a plurality of key strips (9) are provided on one side of the docking sleeve (7) sleeved on the motor output shaft (3), the plurality of key strips (9) are respectively inserted into the plurality of key slots, and the motor output shaft (3) and the docking sleeve (7) are both movably inserted into the transmission cavity of the reduction box (2).

3. The AC synchronous reduction motor according to claim 2, characterized in that: The motor output shaft (3) is placed in the center of the transmission cavity and is provided with an assembly screw (10) through threaded insertion. A clamping block is provided on one side of the assembly screw (10), and one side of the clamping block is arranged to abut against key strips (9) of a plurality of docking sleeves (7).

4. The AC synchronous reduction motor according to claim 3, characterized in that: One side of the reduction input shaft (5) is placed in the transmission cavity and is provided with an input gear (6); the reduction input shaft (5) and the docking sleeve (7) are both symmetrically provided with a plurality of docking teeth (11) on one side located in the transmission cavity; the plurality of docking teeth (11) of the reduction input shaft (5) and the docking sleeve (7) are staggered and plugged in with each other.

5. The AC synchronous reduction motor according to claim 4, characterized in that: The deceleration input shaft (5) has a prismatic groove and an adjustment groove respectively formed on both sides thereof, a separation ring (21) is provided between the prismatic groove and the adjustment groove, a tension rod (12) movably passes through the center of the separation ring (21), a prismatic connection block (13) is located in the prismatic groove and is provided on one side of the tension rod (12), and a first spring (22) is sleeved between the prismatic connection block (13) and the separation ring (21).

6. The AC synchronous reduction motor according to claim 5, characterized in that: A matching groove (14) is provided in the prismatic connecting block (13) near the center of the docking sleeve (7), and a plurality of telescopic cavities (16) are provided in the matching groove (14). A plurality of telescopic hanging blocks (17) are respectively movably plugged into the plurality of telescopic cavities (16) through anti-dropping blocks, and a hanging spring (18) is provided on one side of the telescopic hanging blocks (17) plugged into the telescopic cavities (16). A convex rod (15) is provided in the center of the assembly screw rod (10), and one end of the convex block of the convex rod (15) is plugged into the matching groove (14) of the prismatic connecting block (13), and both end surfaces of the convex rod (15) plugged into the matching groove (14) are conical structures, and one side of the plurality of telescopic hanging blocks (17) is respectively plugged into the matching groove (14) and is hung with one side of the convex block of the convex rod (15).

7. The AC synchronous reduction motor according to claim 6, characterized in that: A limiting ring (20) is movably sleeved on the tension rod (12), and the limiting ring (20) movably penetrates the separating ring (21). A trapezoidal abutment platform is provided on the side of the limiting ring (20) away from the prismatic connecting block (13), and the trapezoidal abutment platform is provided with two abutment end faces, one of which abuts against the separating ring (21), and a second spring (23) is provided between the other abutment end face and the separating ring (21). A plurality of restraining rods (32) are symmetrically provided on the side of the limiting ring (20) close to the prismatic connecting block (13), and the plurality of restraining rods (32) are respectively movably inserted into one side of the prismatic connecting block (13). A plurality of telescopic hanging blocks (17) are correspondingly arranged with the plurality of restraining rods (32), and a restraining slot (19) is provided on the side of the telescopic hanging blocks (17) close to the restraining rods (32). When the abutment end face of the limiting ring (20) abuts against the separating ring (21), the restraining rod (32) is inserted into the restraining slot (19).

8. The AC synchronous reduction motor according to claim 7, characterized in that: A pulling screw sleeve (24) is provided on the side of the tension rod (12) away from the prismatic connection block (13) through a threaded sleeve connection, one side of the pulling screw sleeve (24) contacts the trapezoidal abutment platform of the limiting ring (20), and a blocking block is provided on one side of the external control groove (4).

9. The AC synchronous reduction motor according to claim 8, characterized in that: An oil dripping piston tube (26) is vertically connected to the lower end of the oil storage chamber (25) on one side of the docking gear (11). The blocking piston (27) is movably inserted in the oil dripping piston tube (26). A synchronous piston rod (29) is vertically provided at the center of the upper end of the blocking piston (27). A button groove (28) is provided at the upper end of the reduction box (2). The synchronous piston rod (29) is movably inserted in the button groove (28) and is provided with a piston button (30). A return spring (31) is sleeved below the piston button (30) in the button groove (28) of the synchronous piston rod (29).

10. A control method for the AC synchronous reduction motor according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Before the AC synchronous motor (1) and the reduction box (2) are fixedly assembled by bolts, the docking sleeve (7) with the key strip (9) and the motor output shaft (3) are pressed and fixed by the assembly screw (10), and then the docking teeth (11) of the docking sleeve (7) and the docking teeth (11) of the reduction input shaft (5) are offset, and the two are brought close together and assembled with bolts to the AC synchronous motor (1) and the reduction box (2); Step 2: When the reduction input shaft (5) and the docking teeth (11) of the docking sleeve (7) are assembled, the convex pull rod (15) of the assembly screw (10) is first retracted into the telescopic cavity (16) through a plurality of telescopic hanging blocks (17) on the top surface of the conical structure, and then popped out after the convex pull rod (15) passes over the telescopic hanging blocks (17), and the convex pull rod (15) is hung; Step 3: Then rotate the pulling screw sleeve (24) to move horizontally on the tension rod (12) through the thread. When the pulling screw sleeve (24) contacts the trapezoidal abutment platform of the limiting ring (20), the elastic pressure of the first spring (22) is greater than the elastic pressure of the second spring (23). At this time, the pulling screw sleeve (24) pushes the trapezoidal abutment platform and the separation ring (21) to squeeze the second spring (23) and contact. At the same time, the constraint rod (32) of the limiting ring (20) is inserted into the constraint slots (19) of the plurality of telescopic hanging blocks (17) to limit the movement of the telescopic hanging blocks (17); Step 4: Then, as the pulling screw sleeve (24) continues to rotate, the limiting ring (20) remains stationary, and the tension rod (12) drives the prismatic connecting block (13) and the telescopic hanging block (17) to move toward the position of the separation ring (21). At this time, the plurality of telescopic hanging blocks (17) pull the assembly screw (10) and the motor output shaft (3) toward the reduction input shaft (5), so that the motor output shaft (3) and the reduction input shaft (5) remain pressed and fixed.

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