AC synchronous reduction motor and control method thereof

Abstract

The present invention relates to the technical field of reduction motors, specifically to an AC synchronous reduction motor and a control method thereof, comprising an AC synchronous motor, a combined clamping assembly and a lubrication assembly. A reduction box is fixedly installed on one side of the AC synchronous motor by bolts. A docking sleeve that can cooperate with the reduction input shaft is provided between the motor output shaft and the reduction input shaft. After the AC synchronous motor and the reduction box are assembled, the combined clamping assembly can be used to make the connection between the docking sleeve and the reduction input shaft tighter, avoiding the large active gap between the docking sleeve and the reduction input shaft caused by a simple plug-in form, thereby improving the synchronous driving effect of the motor output shaft and the reduction input shaft. In addition, with the cooperation of the lubrication assembly, the joint position of the reduction input shaft and the docking sleeve can be lubricated, further reducing the wear between the two and improving transmission stability.

Description

Technical Field

[0001] The present invention relates to the technical field of reduction motors, and in particular to an AC synchronous reduction motor and a control method thereof. Background Art

[0002] AC synchronous reduction motors combine the stable speed characteristics of AC synchronous motors with the torque boost function of reduction gears. They are widely used in industrial fields and various mechanical equipment that require precise speed control and large output torque, such as ice shavers and ice crushers.

[0003] The reduction motor needs to be used in conjunction with the motor and the reduction mechanism. When the two are assembled together, the reduction mechanism is usually fixed to the motor housing by bolts, and the motor output shaft is docked with the input shaft of the reduction mechanism. Since the connection position is often inside the housing, the connection operation is mostly in the form of mutual plugging. Since the motor main shaft serves as the main driving force and the input shaft of the reduction mechanism is passively rotated, the movable gap at the connection between the two is often not tight enough. As the use time goes by, active loss is likely to occur, affecting the transmission quality. Summary of the Invention

[0004] The object of the present invention is to provide an AC synchronous reduction motor and a control method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an AC synchronous reduction motor, comprising:

[0006] An AC synchronous motor, wherein a reduction gearbox is fixedly installed on one side of the AC synchronous motor by bolts, a transmission cavity is opened on one side of the reduction gearbox, an external control slot is opened through one side of the transmission cavity, a reduction input shaft is inserted into the external control slot and rotates in the transmission cavity, a motor output shaft is provided on one side of the AC synchronous motor, and the motor output shaft is connected to the reduction input shaft through a docking assembly, and the docking assembly includes a docking sleeve;

[0007] A combined clamping assembly is provided in the deceleration input shaft, and comprises a tension rod, a prismatic connecting block, a convex pull rod and a plurality of telescopic hanging blocks;

[0008] A lubrication assembly is arranged above the transmission cavity in the reduction box, and the lubrication assembly includes an oil storage cavity and a sealing piston.

[0009] Preferably, a plurality of key slots are provided on the outer side of the motor output shaft, and a docking sleeve is arranged to be sleeved on the motor output shaft. A plurality of key strips are provided on one side of the docking sleeve that is sleeved on the motor output shaft, and the plurality of key strips are respectively inserted into the plurality of key slots, and the motor output shaft and the docking sleeve are both movably inserted into the transmission cavity of the reduction gearbox.

[0010] Preferably, the motor output shaft is placed in the center of the transmission cavity and is provided with an assembly screw through threaded insertion. A clamping block is provided on one side of the assembly screw, and one side of the clamping block is arranged to abut against the key strips of several docking sleeves.

[0011] Preferably, one side of the reduction input shaft is placed in the transmission cavity and is provided with an input gear, and the reduction input shaft and the docking sleeve are both symmetrically provided with a plurality of docking teeth on one side located in the transmission cavity, and the plurality of docking teeth of the reduction input shaft and the docking sleeve are staggered and plugged into each other.

[0012] Preferably, a prismatic groove and an adjustment groove are respectively provided on both sides of the deceleration input shaft, a separating ring is provided between the prismatic groove and the adjustment groove, the tensioning rod movably passes through the center of the separating ring, the prismatic connecting block is located in the prismatic groove and is provided on one side of the tensioning rod, and a first spring is provided between the prismatic connecting block and the separating ring.

[0013] Preferably, a matching groove is provided in the prismatic connecting block near the center of the docking sleeve, and a number of telescopic cavities are provided in the matching groove. A number of telescopic hanging blocks are movably inserted in the number of telescopic cavities through anti-slip blocks respectively. A hanging spring is provided on one side of the telescopic hanging block inserted in the telescopic cavity. A convex pull rod is provided in the center of the assembly screw. One end of the convex block of the convex pull rod is inserted in the matching groove of the prismatic connecting block. Both end surfaces of the convex pull rod inserted in the matching groove are conical structures. One side of the number of telescopic hanging blocks is respectively inserted in the matching groove and hung with one side of the convex block of the convex pull rod.

[0014] Preferably, a limiting ring is movably sleeved on the tensioning rod, and the limiting ring movably passes through the separating ring. A trapezoidal abutment platform is provided on the side of the limiting ring away from the prismatic connecting block, and the trapezoidal abutment platform is provided with two abutment end faces, one of which abuts against the separating ring, and a second spring is provided between the other abutment end face and the separating ring. A plurality of constraint rods are symmetrically provided on the side of the limiting ring close to the prismatic connecting block, and the plurality of constraint rods are movably inserted into one side of the prismatic connecting block respectively. A plurality of telescopic hanging blocks are correspondingly arranged to the plurality of constraint rods, and a constraint slot is provided on the side of the telescopic hanging block close to the constraint rod. When the abutment end face of the limiting ring abuts against the separating ring, the constraint rod is inserted into the constraint slot.

[0015] Preferably, a pulling screw sleeve is provided on the side of the tension rod away from the prismatic connecting block through a threaded connection, one side of the pulling screw sleeve contacts the trapezoidal abutment platform of the limiting ring, and a sealing block is provided on the side of the external control groove.

[0016] Preferably, the oil storage chamber is vertically connected to the lower end on one side of the docking gear with an oil dripping piston tube, the blocking piston is movably inserted in the oil dripping piston tube, a synchronous piston rod is vertically provided at the center of the upper end of the blocking piston, a button groove is provided at the upper end of the reduction gear box, the synchronous piston rod is movably inserted in the button groove and is provided with a piston button, and a reset spring is sleeved below the piston button of the synchronous piston rod located in the button groove.

[0017] A control method for an AC synchronous reduction motor comprises the following steps:

[0018] Step 1: Before the AC synchronous motor and the reduction gearbox are fixed and assembled with bolts, the docking sleeve with a key bar is pressed and fixed to the motor output shaft by the assembly screw. Then, the docking teeth of the docking sleeve are offset with the docking teeth of the reduction input shaft. The two are brought close together and the AC synchronous motor and the reduction gearbox are assembled with bolts.

[0019] Step 2: When assembling the reduction input shaft and the docking gear of the docking sleeve, the convex pull rod protrusion of the assembly screw is first retracted into the telescopic cavity through several telescopic hanging blocks on the top surface of the conical structure, and then popped out after the protrusion passes over the telescopic hanging block to hang the protrusion of the convex pull rod;

[0020] Step 3: Then rotate the pulling screw sleeve to move horizontally on the tensioning rod through the thread. When the pulling screw sleeve contacts the trapezoidal abutment 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 screw sleeve pushes the trapezoidal abutment platform and the separation ring to squeeze the second spring and contact. At the same time, the constraint rod of the limiting ring is inserted into the constraint slots of the telescopic hanging blocks to limit the movement of the telescopic hanging blocks.

[0021] Step 4: Then as the pulling screw sleeve continues to rotate, the limiting ring remains stationary, and the tensioning rod drives the prismatic connecting block and the telescopic hanging block to move toward the separation ring position. At this time, several telescopic hanging blocks pull the assembly screw and the motor output shaft to move toward the reduction input shaft, so that the motor output shaft and the reduction input shaft remain pressed and fixed.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By setting a docking sleeve 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 box are assembled, the connection between the docking sleeve and the reduction input shaft can be made tighter by combining the clamping components, avoiding the large active gap between the docking sleeve and the reduction input shaft caused by the simple plug-in form, thereby improving the synchronous driving effect of the motor output shaft and the reduction input shaft. In addition, with the cooperation of the lubrication component, the joint position of the reduction input shaft and the docking sleeve can be lubricated, further reducing the wear between the two and improving the transmission stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the partial episiotomy structure of the present invention;

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of part A;

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the C part;

[0029] Figure 6 For the present invention Figure 3 Schematic diagram of the D part;

[0030] Figure 7 This is a schematic diagram of the installation structure of the butt-jointed sleeve of the present invention;

[0031] Figure 8 This is an exploded view of the connection between the deceleration input shaft and the motor output shaft of the present invention;

[0032] Figure 9 For the present invention Figure 8 Schematic diagram of part E;

[0033] Figure 10 For the present invention Figure 9 Schematic diagram of the F part.

[0034] In the figure: AC synchronous motor 1, reduction gear box 2, motor output shaft 3, external control slot 4, reduction input shaft 5, input gear 6, docking sleeve 7, key strip 9, assembly screw 10, docking teeth 11, tensioning rod 12, prismatic connecting block 13, matching slot 14, protruding pull rod 15, telescopic chamber 16, telescopic hanging block 17, hanging spring 18, constraint slot 19, limiting ring 20, separating ring 21, first spring 22, second spring 23, pulling screw sleeve 24, oil storage chamber 25, oil drip piston tube 26, blocking piston 27, button slot 28, synchronous piston rod 29, piston button 30, reset spring 31, constraint plug 32. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Please see the attached Figure 1-10 , this application provides the following technical solutions.

[0037] Embodiment 1: An AC synchronous reduction motor comprises an AC synchronous motor 1, a reduction box 2 is fixedly installed on one side of the AC synchronous motor 1 by bolts, a transmission cavity is opened on one side of the reduction box 2, an external control slot 4 is opened through one side of the transmission cavity, a reduction input shaft 5 is inserted into the external control slot 4 and rotates in the transmission cavity, 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 through a docking assembly, the docking assembly comprises a docking sleeve 7, a plurality of key slots are opened on the outer side of the motor output shaft 3, 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 which is sleeved on the motor output shaft 3, and the plurality of key strips 9 are respectively inserted in 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, when the docking sleeve 7 is placed in the transmission cavity, the lubrication operation of the transmission cavity can synchronously replenish oil to the docking sleeve 7.

[0038] The motor output shaft 3 is placed in the transmission cavity and is provided with an assembly screw 10 through a threaded connection at the center. A pressing block is provided on one side of the assembly screw 10, and one side of the pressing block is abutted against the key strips 9 of the 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 plurality of docking teeth 11 of the reduction input shaft 5 and the docking sleeve 7 are staggered and plugged into 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.

[0039] 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 includes a tension rod 12, a prismatic connecting block 13, a protruding 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. 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 connecting block 13 is located in the prismatic groove and is provided on one side of the tension rod 12. A first spring 22 is provided between the prismatic connecting block 13 and the separation ring 21. The prismatic connecting block 13 is prismatic and can only move horizontally but cannot rotate. The first spring 22 can maintain the basic posture of the prismatic connecting block 13.

[0040] A matching groove 14 is provided in the center of the prismatic connecting block 13 near 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 inserted into the plurality of telescopic cavities 16 through the anti-falling blocks. The telescopic hanging blocks 17 are inserted into the telescopic cavities 16 on one side thereof. A hanging spring 18 is provided on each side. A convex pull rod 15 is provided in the center of the assembly screw 10. One end of the convex pull rod 15 is inserted into the matching groove 14 of the prismatic connecting block 13, and both end surfaces of the convex pull rod 15 inserted 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 telescopically moved, 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.

[0041] A limiting ring 20 is movably sleeved on the tension rod 12, and the limiting ring 20 movably passes through 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. The trapezoidal abutment platform has 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 constraint rods 32 are symmetrically provided on the side of the limiting ring 20 close to the prismatic connecting block 13. The plurality of constraint rods 32 are movably plugged into one side of the prismatic connecting block 13, and a plurality of telescopic hanging blocks 17 are correspondingly arranged with the plurality of constraint rods 32. The telescopic hanging A constraint slot 19 is provided on the side of the block 17 close to the constraint rod 32. When the abutting end face of the limiting ring 20 abuts against the separating ring 21, the constraint rod 32 is inserted into the constraint slot 19. The side of the tensioning rod 12 away from the prismatic connecting block 13 is provided with a pulling screw sleeve 24 through a threaded sleeve. One side of the pulling screw sleeve 24 contacts the trapezoidal abutment platform of the limiting ring 20. A sealing 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 squeezes the second spring 23, the prismatic connecting block 13 and the tensioning rod 12 remain in position.

[0042] Example 2: On the basis of Example 1, a lubrication assembly is provided to drip oil lubricate the combined position of the reduction input shaft 5 and the docking tooth 11 of the docking sleeve 7. The lubrication assembly is provided above the transmission chamber in the reduction box 2. The lubrication assembly includes an oil storage chamber 25 and a blocking piston 27. The lower end of the oil storage chamber 25 on one side of the docking tooth 11 is vertically connected to a drip piston tube 26. The blocking piston 27 is movably inserted in the drip piston tube 26. A synchronous piston rod 29 is vertically provided at the center of the upper end of the blocking piston 27. The reduction box 2 A button groove 28 is provided at the upper end, and a synchronous piston rod 29 is movably inserted in the button groove 28 and is provided with a piston button 30. The synchronous piston rod 29 is located in the button groove 28 and is sleeved with a return spring 31 below the piston button 30. When the lubricating oil in the oil storage chamber 25 flows out through the oil dripping piston tube 26 extending from the blocking piston 27, the lubricating oil will drip onto the mutual meshing position of the docking teeth 11 to form an oil film, thereby 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.

[0043] A control method for an AC synchronous reduction motor comprises the following steps:

[0044] Step 1: Before the AC synchronous motor 1 and the reduction gear box 2 are fixed and assembled by bolts, the docking sleeve 7 with the key bar 9 is pressed and fixed to the motor output shaft 3 by the assembly screw 10. Then, the docking teeth 11 of the docking sleeve 7 are offset with the docking teeth 11 of the reduction input shaft 5. The two are brought close together and assembled with bolts to assemble the AC synchronous motor 1 and the reduction gear box 2;

[0045] Step 2: When the reduction input shaft 5 is assembled with the docking teeth 11 of the docking sleeve 7, the convex block of 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 block passes over the telescopic hanging block 17 to hang the convex block of the convex pull rod 15;

[0046] Step 3: Then rotate the pulling screw 24 to move horizontally on the tensioning rod 12 through the thread. When the pulling screw 24 contacts the trapezoidal abutment 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 24 pushes the trapezoidal abutment and the separation ring 21 to squeeze the second spring 23 and contact. At the same time, the restraining rod 32 of the limiting ring 20 is inserted into the restraining slots 19 of the plurality of telescopic hanging blocks 17 to limit the movement of the telescopic hanging blocks 17.

[0047] Step 4: Then as the pulling screw sleeve 24 continues to rotate, the limiting ring 20 remains stationary, and the tightening rod 12 drives the prismatic connecting block 13 and the telescopic hanging block 17 to move toward the position of the separating ring 21. At this time, several 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.

[0048] Step 5: The oil storage chamber 25 can provide lubricating oil to the gears in the transmission chamber after being used for a period of time. During normal use, the piston button 30 can be pressed to control the synchronous piston rod 29 and the blocking piston 27 to move downward, and the transmission chamber is connected to the oil storage chamber 25. At this time, the lubricating oil flowing from the oil dripping piston tube 26 can be accurately dripped onto the plug-in position of the docking teeth 11 of the reduction input shaft 5 and the docking sleeve 7, reducing excessive loss between the two and improving transmission performance. The blocking piston 27 can also be provided with an elastic oil dripping hole to continuously and slowly drip oil through the gap of the elastic rubber structure. When the reduction box 2 is in normal use, the docking teeth 11 are automatically and continuously lubricated.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 gear 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 gear 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 external control slot (4) and rotated in the transmission cavity, 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 includes 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 tensioning rod (12), a prismatic connecting block (13), a convex pull rod (15) and a plurality of telescopic hanging blocks (17); A lubrication assembly, the lubrication assembly being arranged above the transmission chamber in the reduction gearbox (2), the lubrication assembly comprising an oil storage chamber (25) and a blocking piston (27); The motor output shaft (3) is provided with a plurality of key slots on its outer side, a docking sleeve (7) is provided for sleeve-connecting the motor output shaft (3), a plurality of key strips (9) are provided on one side of the docking sleeve (7) sleeve-connecting 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 gearbox (2); 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 pressing block is provided on one side of the assembly screw (10), and one side of the pressing block is arranged to abut against the key strips (9) of the plurality of docking sleeves (7); One side of the deceleration input shaft (5) is placed in the transmission cavity and is provided with an input gear (6); the deceleration 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 plurality of docking teeth (11) of the deceleration input shaft (5) and the docking sleeve (7) are staggered and plugged into each other; A prismatic groove and an adjustment groove are respectively provided on both sides of the deceleration input shaft (5), 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 connecting 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 provided between the prismatic connecting block (13) and the separation ring (21); 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-slip 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). Both end surfaces of the convex pull 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 hooked to one side of the convex block of the convex pull rod (15); The tensioning rod (12) is movably sleeved with a limiting ring (20), which movably passes through 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 constraint rods (32) are symmetrically provided on the side of the limiting ring (20) close to the prismatic connecting block (13), and the plurality of constraint rods (32) are movably inserted into one side of the prismatic connecting block (13), and a plurality of telescopic hanging blocks (17) are correspondingly arranged with the plurality of constraint rods (32). A constraint slot (19) is provided on the side of the telescopic hanging block (17) close to the constraint rod (32). When the abutment end face of the limiting ring (20) abuts against the separating ring (21), the constraint rod (32) is inserted into the constraint slot (19); A pulling screw sleeve (24) is provided on the side of the tension rod (12) away from the prismatic connecting 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).

2. The AC synchronous reduction motor according to claim 1, characterized in that: The oil storage chamber (25) is vertically connected to the lower end on one side of the docking gear (11) and is provided with an oil dripping piston tube (26). 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). The synchronous piston rod (29) is located in the button groove (28) and is sleeved with a return spring (31) below the piston button (30).

3. A control method for the AC synchronous reduction motor according to claim 2, characterized in that: The following steps are involved: Step 1: Before the AC synchronous motor (1) and the reduction gear box (2) are fixed and assembled by bolts, the docking sleeve (7) with the key bar (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 gear 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) pushes a plurality of telescopic hanging blocks (17) through the conical structure to first retract into the telescopic cavity (16), and then pops out after the convex block passes over the telescopic hanging block (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 tensioning 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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