A rotor clamping device for three-phase asynchronous motor assembly and processing

Abstract

The present invention relates to the technical field of motor assembly and processing, and discloses a rotor clamping device for three-phase asynchronous motor assembly and processing, comprising a sling body, a balance beam connected to the top of the sling body, a hook movably connected to the balance beam, a shaft connecting cylinder for connecting with the rotor motor shaft installed at the bottom of the sling body, a center plate arranged in the middle of the shaft connecting cylinder, an end cover arranged at the end of the shaft connecting cylinder, a center shaft coaxially installed on the center plate, a bracket installed on the center shaft, a plurality of shaft clamping calipers for clamping the rotor motor shaft arranged in a circular array on the side of the bracket, a plurality of shaft clamping calipers movably cooperate with the bracket, a crank for controlling the movement of the shaft clamping caliper rotatably installed on the end cover, a driving shaft connected to the crank rotating shaft, and a driving shaft and the shaft clamping caliper transmission connection. After the crank is rotated, the angle after the shaking is automatically locked, thereby fixing the position of the shaft clamping caliper, so that the rotor motor shaft can be stably clamped when the entire sling body moves.

Description

Technical Field

[0001] The invention relates to the technical field of motor assembly and processing, and in particular to a rotor clamping device for assembly and processing of a three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is an induction motor that is powered by a 380V three-phase AC power supply (phase difference of 120 degrees) at the same time. Its working principle is based on the law of electromagnetic induction. When the stator is connected to the current, a rotating magnetic field is generated. The rotor induces current in the magnetic field and interacts with the magnetic field to generate electromagnetic torque, driving the rotor to rotate. Since the rotor and the stator rotating magnetic field rotate in the same direction but at different speeds, there is a slip rate, hence the name three-phase asynchronous motor.

[0003] When assembling a three-phase asynchronous motor, place the stator in the predetermined installation position and fix it with special tools, then install the rotor into the stator. The motor shaft of the rotor is plugged into the end cover to ensure that the rotor and stator are aligned and avoid contact between the rotor and stator as much as possible to prevent the varnish applied to the two from being knocked off.

[0004] The existing three-phase asynchronous motors usually use hoisting to install the rotors because the parts are heavy. However, most of the existing hoisting tools only have two motor shaft sockets of different sizes. If they cannot adapt to motor shafts of different sizes, there may be a gap between the motor shaft and the hoist after plugging. This gap will not only affect the stability of the hoisting, but may also cause obvious shaking during the movement of the rotor. This shaking will make the rotor and stator unstable during installation and prone to collision, which is very challenging for the operator's level and experience; therefore, it does not meet the existing needs. In this regard, we propose a rotor clamping device for three-phase asynchronous motor assembly and processing. Summary of the invention

[0005] The present invention provides a rotor clamping device for three-phase asynchronous motor assembly and processing, which can adapt to motor shafts of different sizes, ensure close fit between the motor shaft and the hanger, and reduce the gap and shaking. It solves the problem mentioned in the background technology that the motor shaft of different sizes cannot be adapted, which may cause a gap between the motor shaft and the hanger after being plugged in. This gap will not only affect the stability of the hoisting, but also may cause obvious shaking during the movement of the rotor.

[0006] The present invention provides the following technical solution: a rotor clamping device for three-phase asynchronous motor assembly and processing, comprising a hanger main body, a balance beam connected to the top of the hanger main body, a hook movably connected to the balance beam, a shaft connecting cylinder for connecting to the rotor motor shaft is installed at the bottom of the hanger main body, a center plate is arranged in the middle of the shaft connecting cylinder, an end cover is installed at the end of the shaft connecting cylinder, a center shaft is coaxially installed on the center plate, a bracket is installed on the center shaft, a plurality of shaft clamping calipers for clamping the rotor motor shaft are arranged in a circular array on the side of the bracket, a plurality of the shaft clamping calipers are movably matched with the bracket, a crank for controlling the movement of the shaft clamping caliper is rotatably installed on the end cover, the crank shaft is connected to a drive shaft, and the drive shaft is transmission-connected to the shaft clamping caliper.

[0007] As an optional scheme of the rotor clamping device for three-phase asynchronous motor assembly and processing described in the present invention, wherein: a clamping shaft toothed disk is rotatably installed on the upper side of the bracket, a plurality of arc-shaped slots are opened in a circumferential array on the clamping shaft toothed disk, and the arc-shaped slots are inclined, the clamping shaft caliper is connected to a sliding guide rod, the sliding guide rod is slidably matched with the bracket, a sliding column is provided on the sliding guide rod, and the sliding column is slidably engaged with the arc-shaped slots, a driving gear for driving the clamping shaft toothed disk to rotate is rotatably installed on the bracket, the driving gear is meshed with the clamping shaft toothed disk, and the driving shaft is coaxially connected with the driving gear.

[0008] As an optional scheme of a rotor clamping device for assembly and processing of a three-phase asynchronous motor described in the present invention, a worm gear is rotatably mounted on one side of the center plate adjacent to the end cover, a support block is fixedly mounted on the center plate, a worm is rotatably mounted on the side of the support block, the worm is meshed with the worm gear, a first bevel gear is mounted on the drive shaft, a second bevel gear is mounted on the end of the worm, and the worm is meshed with the second bevel gear.

[0009] As an optional solution of the rotor clamping device for three-phase asynchronous motor assembly and processing described in the present invention, wherein: a driving disk is rotatably installed on one side of the center plate adjacent to the center axis, a plurality of bevel grooves are opened in a circumferential array on the driving disk, the center axis passes through the driving disk, and a plurality of reinforcement grooves are arranged in a circumferential array on the center axis, the reinforcement grooves correspond to the bevel grooves, a reinforcement disk is fixedly installed on the driving disk, a reinforcement column is slidably installed in the reinforcement disk, one end of the reinforcement column is slidably fitted with the bevel wall of the bevel groove, and the other end of the reinforcement column is movably plugged into the reinforcement groove.

[0010] As an optional solution of the rotor clamping device for assembly and processing of a three-phase asynchronous motor described in the present invention, wherein: a plurality of reinforcement grooves are arranged in a circumferential array on the reinforcement disk, the reinforcement grooves correspond to the inclined grooves, the reinforcement column is slidably inserted in the reinforcement groove, a protrusion is arranged in the reinforcement groove, a reinforcement spring is installed on the protrusion, the reinforcement spring is sleeved outside the reinforcement column, and the end of the reinforcement spring is in contact with the reinforcement column, and the worm gear is coaxially connected to the drive disk.

[0011] As an optional solution of the rotor clamping device for assembly and processing of a three-phase asynchronous motor described in the present invention, wherein: a first airbag ring and a second airbag ring are installed in the shaft connecting tube, the first airbag ring and the second airbag ring are sleeved outside the clamping shaft caliper, a piston cylinder is installed between the end cover and the center plate, the piston cylinder is connected to the second airbag ring, a piston plate is slidably installed in the piston cylinder, the piston plate and the first airbag ring and the second airbag ring are connected to an air guide pipe, and the piston plate is transmission-connected to the crank;

[0012] When the crank is shaken and the clamp shaft caliper is contracted toward the center, the piston plate simultaneously squeezes the gas in the piston cylinder, and the first air bag ring and the second air bag ring expand to tighten the clamp shaft caliper;

[0013] When the crank handle is turned back and the clamping shaft caliper is separated outward, the piston plate moves back and the gas in the first air bag ring and the second air bag ring flows back into the piston cylinder.

[0014] As an optional solution of the rotor clamping device for three-phase asynchronous motor assembly processing described in the present invention, an arc-shaped rack is slidably installed on the center plate, an arc rod is connected to the end of the arc-shaped rack, the piston plate is installed on the end of the arc rod, a toggle gear is installed on the drive shaft, and the arc-shaped rack is meshed with the toggle gear.

[0015] As an optional solution of the rotor clamping device for three-phase asynchronous motor assembly processing described in the present invention, the arc rod and the arc-shaped rack cross section are on the same circle, and the piston cylinder is also a concentric arc cylinder.

[0016] As an optional solution of the rotor clamping device for three-phase asynchronous motor assembly processing described in the present invention, wherein: the first airbag ring is configured as an eccentric airbag ring which is flat on the top and thick on the bottom after expansion, and the second airbag ring is configured as an eccentric airbag ring which is thick on the top and flat on the bottom after expansion, the first airbag ring is located on the side of the clamping shaft caliper away from the crank, and the second airbag ring is located on the side of the clamping shaft caliper adjacent to the crank.

[0017] As an optional solution of a rotor clamping device for three-phase asynchronous motor assembly processing described in the present invention, the shaft clamping caliper is configured as an arc-shaped caliper, a buffer elastic pad is installed on the inner wall of the shaft clamping caliper, and the buffer elastic pad is configured as a rubber pad for adaptively clamping rotor motor shafts of different specifications.

[0018] The present invention has the following beneficial effects:

[0019] 1. The rotor clamping device for assembling and processing a three-phase asynchronous motor has a shaft clamping caliper arranged inside a shaft coupling cylinder. Compared with the prior art method of directly inserting the rotor motor shaft into the shaft coupling cylinder, the technical solution of the present invention can control the retraction and extension of the shaft clamping caliper by shaking the crank, thereby clamping the rotor motor shaft, which can be more stable when installing the rotor stator.

[0020] Moreover, the driving gear is driven to rotate by the driving shaft, and the positional relationship between the sliding guide rod and the bracket is controlled to realize the closing and discreteness of the axis clamping caliper. Since the axis clamping caliper is an arc caliper in a circular array, it can clamp rotor motor shafts of different sizes, and produce a uniform clamping force on the rotor motor shaft, which has stronger adaptability, improves the stability and accuracy of the rotor installation during the assembly of the three-phase asynchronous motor, reduces the difficulty of the operator's work, and improves the efficiency of the rotor installation.

[0021] 2. The rotor clamping device for assembling and processing a three-phase asynchronous motor is provided with a worm wheel and a worm on the center plate, so that after the crank handle is rotated, due to the self-locking characteristics of the worm and the worm wheel, the crank handle will automatically lock the angle after the crank handle is rotated, thereby fixing the position of the clamping shaft caliper, so that the rotor motor shaft will be firmly clamped when the entire lifting device body moves, and the generation of gaps and the shaking of the rotor motor shaft are reduced as much as possible, thereby further reducing the possibility of collision between the rotor and the stator, further reducing the difficulty of the operator's work, and improving the efficiency of rotor installation;

[0022] Moreover, through the setting of the drive disk, the drive disk rotates while the worm gear rotates. Since the drive disk is provided with a bevel groove, the center shaft is clamped by the reinforcement column, thereby strengthening the stability of the center shaft and nearby structures such as the clamping gear disk and the bracket and the shaft coupling, and further improving the clamping effect of the shaft coupling on the rotor motor shaft, reducing the working difficulty, improving the efficiency, and enhancing the strength and durability of the overall structure, and further improving the rotor installation efficiency and effect when assembling the three-phase asynchronous motor.

[0023] 3. The rotor clamping device for assembly and processing of three-phase asynchronous motors, through the arrangement of the first airbag ring and the second airbag ring, when the crank is shaken, the toggle gear will drive the arc-shaped rack to move, so that the first airbag ring and the second airbag ring are inflated, so that the retraction and extension of the first airbag ring and the second airbag ring are consistent with the retraction and extension of the clamp shaft caliper, and automatically assist the clamp shaft caliper in the stabilization effect of clamping the rotor;

[0024] Moreover, the present invention sets the first airbag ring and the second airbag ring as eccentric airbag rings, so as to minimize the loss problem of the rotor caused by the uneven force on the clamp shaft caliper due to the weight of the center of gravity. By reducing the unbalanced force and providing additional support force, it helps to extend the service life of the clamp shaft caliper and other related components, thereby reducing maintenance costs and improving the reliability of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall exploded three-dimensional structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the shaft connecting cylinder of the present invention.

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of the side of the shaft connecting cylinder of the present invention.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the crank of the present invention.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping caliper of the present invention.

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the side of the shaft connecting cylinder of the present invention.

[0032] Figure 8 It is a schematic diagram of the structure of the clamping shaft toothed disc of the present invention.

[0033] Fig. 9 It is a schematic diagram of the reinforcement column structure of the present invention.

[0034] Fig.10 It is a schematic diagram of the piston cylinder structure of the present invention.

[0035] Fig.11 It is a schematic diagram of the first airbag ring and the second airbag shape of the present invention.

[0036] Fig.12 For the present invention Fig. 9 A is an enlarged schematic diagram of the structure.

[0037] In the figure: 10, the main body of the spreader; 20, the balance beam; 30, the hook; 40, the shaft connecting tube; 110, the center plate; 120, the end cover; 130, the driving plate; 140, the inclined groove; 150, the reinforcement column; 160, the reinforcement groove; 170, the reinforcement slide; 180, the protrusion; 181, the reinforcement spring; 190, the reinforcement disc; 210, the driving shaft; 220, the first bevel gear; 230, the worm; 240, the worm wheel; 250, the support block; 260, the second bevel gear; 310, crank; 320, center axis; 330, clamping shaft toothed disc; 331, arc-shaped slot hole; 340, bracket; 350, clamping shaft caliper; 360, sliding guide rod; 361, sliding column; 370, buffer elastic pad; 380, transmission shaft; 390, driving gear; 410, toggle gear; 420, arc-shaped rack; 430, arc rod; 440, piston cylinder; 450, piston plate; 510, first air bag ring; 520, second air bag ring; 530, air guide tube. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0039] Embodiment 1: This embodiment is intended to promote the solution of the problem that most existing lifting tools are only provided with two motor shaft sockets of different sizes. If they cannot adapt to motor shafts of different sizes, there may be a gap between the motor shaft and the lifting tool after plugging. This gap will not only affect the stability of the lifting, but also may cause obvious shaking during the movement of the rotor. This shaking will make the rotor and stator unstable during installation and prone to collision, which is very challenging for the operator's level and experience. Please refer to Figure 1-Figure 12 A rotor clamping device for assembling and processing a three-phase asynchronous motor comprises a hanger body 10, a balance beam 20 is connected above the hanger body 10, a hook 30 is movably connected to the balance beam 20, a shaft coupling cylinder 40 for connecting to a rotor motor shaft is installed at the bottom of the hanger body 10, a center plate 110 is arranged in the middle of the shaft coupling cylinder 40, an end cover 120 is installed at the end of the shaft coupling cylinder 40, a center shaft 320 is coaxially installed on the center plate 110, a bracket 340 is installed on the center shaft 320, a plurality of shaft clamps 350 for clamping the rotor motor shaft are arranged in a circular array on the side of the bracket 340, a plurality of shaft clamps 350 are movably matched with the bracket 340, a crank 310 for controlling the movement of the shaft clamp 350 is rotatably installed on the end cover 120, a driving shaft 210 is connected to the rotating shaft of the crank 310, and the driving shaft 210 is transmission-connected to the shaft clamp 350.

[0040] See Figure 3 , Figure 4 and Figure 8 The upper side of the bracket 340 is rotatably mounted with a clamping shaft toothed disk 330, and a plurality of arc-shaped slots 331 are provided in a circumferential array on the clamping shaft toothed disk 330, and the arc-shaped slots 331 are arranged obliquely. The clamping shaft caliper 350 is connected with a sliding guide rod 360, and the sliding guide rod 360 is slidably matched with the bracket 340, and a sliding column 361 is arranged on the sliding guide rod 360, and the sliding column 361 is slidably engaged with the arc-shaped slot 331. A driving gear 390 for driving the clamping shaft toothed disk 330 to rotate is rotatably mounted on the bracket 340, and the driving gear 390 is meshed with the clamping shaft toothed disk 330, and the driving shaft 210 is coaxially connected with the driving gear 390. The clamping shaft caliper 350 is arranged as an arc-shaped caliper, and a buffer elastic pad 370 is installed on the inner wall of the clamping shaft caliper 350, and the buffer elastic pad 370 is arranged as a rubber pad, which is used to adaptively clamp the rotor motor shafts of different specifications.

[0041] In the specific configuration, a transmission shaft 380 is installed on the bracket 340 , the transmission shaft 380 is coaxially connected to the driving shaft 210 , and the driving gear 390 is rotatably installed on the transmission shaft 380 .

[0042] In this embodiment: by setting a clamping shaft caliper 350 inside the coupling tube 40, compared with the existing method of directly inserting the rotor motor shaft into the coupling tube 40, the technical solution of the present invention can control the retraction and extension of the clamping shaft caliper 350 by shaking the handle 310, so as to clamp the rotor motor shaft, which can be more stable when installing the rotor stator.

[0043] Moreover, the driving gear 390 is driven to rotate by the driving shaft 210. Since the driving gear 390 is meshed with the shaft clamping gear disc 330, the shaft clamping gear disc 330 rotates at the same time. Since the arc slot 331 is set as an inclined arc slot, the position of the sliding column 361 will be changed when the shaft clamping gear disc 330 rotates, thereby controlling the position relationship between the sliding guide rod 360 and the bracket 340, and realizing the closing and discreteness of the shaft clamping caliper 350. Since the shaft clamping caliper 350 is an arc caliper in a circular array, it can clamp rotor motor shafts of different specifications and sizes, and generate a uniform clamping force on the rotor motor shaft. It has stronger adaptability, improves the stability and accuracy of the rotor installation during the assembly of the three-phase asynchronous motor, reduces the operator's work difficulty, and improves the efficiency of the rotor installation.

[0044] Embodiment 2: This embodiment is intended to promote the solution of the problem that the clamping of the clamping shaft caliper 350 needs to be locked. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 12A worm gear 240 is rotatably mounted on one side of the center plate 110 adjacent to the end cover 120, a support block 250 is fixedly mounted on the center plate 110, a worm 230 is rotatably mounted on the side of the support block 250, the worm 230 is meshed with the worm gear 240, a first bevel gear 220 is mounted on the drive shaft 210, a second bevel gear 260 is mounted on the end of the worm 230, the worm 230 is meshed with the second bevel gear 260.

[0045] A driving disk 130 is rotatably installed on one side of the center plate 110 adjacent to the center axis 320, and a plurality of bevel grooves 140 are provided in a circumferential array on the driving disk 130. The center axis 320 passes through the driving disk 130, and a plurality of reinforcement grooves 160 are provided in a circumferential array on the center axis 320, and the reinforcement grooves 160 correspond to the bevel grooves 140. A reinforcement disk 190 is fixedly installed on the driving disk 130, and a reinforcement column 150 is slidably installed in the reinforcement disk 190, one end of the reinforcement column 150 is slidably fitted with the bevel wall of the bevel groove 140, and the other end of the reinforcement column 150 is movably plugged into the reinforcement groove 160.

[0046] See Fig. 9 and Fig.12 A plurality of reinforcing grooves 170 are arranged in a circumferential array on the reinforcing disc 190, and the reinforcing grooves 170 correspond to the inclined grooves 140. The reinforcing column 150 is slidably inserted in the reinforcing groove 170, and a protrusion 180 is arranged in the reinforcing groove 170. A reinforcing spring 181 is installed on the protrusion 180. The reinforcing spring 181 is sleeved outside the reinforcing column 150, and the end of the reinforcing spring 181 is in contact with the reinforcing column 150. The worm gear 240 is coaxially connected to the driving disk 130.

[0047] In this embodiment: by installing the worm wheel 240 and the worm 230 on the center plate 110, after the crank 310 is rotated, due to the meshing of the first bevel gear 220 and the second bevel gear 260, and the self-locking characteristics of the worm 230 and the worm wheel 240, the crank 310 will automatically lock the angle after the shaking, thereby fixing the position of the clamping shaft caliper 350, so that when the entire hoist body 10 moves, the rotor motor shaft will be firmly clamped, the gap will be reduced as much as possible, and the shaking of the rotor motor shaft will be reduced, thereby further reducing the possibility of collision between the rotor and the stator, further reducing the difficulty of the operator's work, and improving the efficiency of rotor installation;

[0048] Moreover, by the arrangement of the drive disk 130, when the worm gear 240 rotates, the drive disk 130 also rotates. Since the drive disk 130 is provided with a bevel groove 140, when the drive disk 130 rotates, the inner wall of the bevel groove 140 will squeeze the reinforcement column 150, so that the reinforcement spring 181 is compressed, and the reinforcement column 150 moves centripetally. The reinforcement column 150 is against the reinforcement groove 160, so that the center shaft 320 is clamped by the reinforcement column 150, thereby strengthening the stability of the center shaft 320 and the nearby clamping gear plate 330, the bracket 340 and the shaft coupling 40, and further improving the clamping effect of the shaft coupling 40 on the rotor motor shaft, reducing the difficulty of work, improving efficiency, and enhancing the strength and durability of the overall structure, and further improving the rotor installation efficiency and effect during the assembly of the three-phase asynchronous motor.

[0049] Embodiment 3: This embodiment is intended to promote the solution of the problem that the three-phase asynchronous motor rotor is relatively heavy, resulting in greater force and more serious loss of the clamping shaft caliper 350 located below. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 12 A first airbag ring 510 and a second airbag ring 520 are installed in the shaft connecting tube 40, and the first airbag ring 510 and the second airbag ring 520 are sleeved outside the clamping shaft caliper 350. A piston cylinder 440 is installed between the end cover 120 and the center plate 110, and the piston cylinder 440 is connected to the second airbag ring 520. A piston plate 450 is slidably installed in the piston cylinder 440, and the piston plate 450 and the first airbag ring 510 and the second airbag ring 520 are connected to an air guide pipe 530. The piston plate 450 is connected to the first airbag ring 510 and the second airbag ring 520 through the air guide pipe 530, and the piston plate 450 is in transmission connection with the crank 310;

[0050] When the crank 310 is shaken and the clamp shaft caliper 350 is contracted toward the center, the piston plate 450 simultaneously squeezes the gas in the piston cylinder 440, and the first air bag ring 510 and the second air bag ring 520 expand to tighten the clamp shaft caliper 350;

[0051] When the crank handle 310 is turned back and the clamping shaft caliper 350 is separated outward, the piston plate 450 moves back, and the gas in the first air bag ring 510 and the second air bag ring 520 flows back into the piston cylinder 440 .

[0052] See Figure 5 and Fig.10 An arc-shaped rack 420 is slidably mounted on the center plate 110 , an arc rod 430 is connected to the end of the arc-shaped rack 420 , a piston plate 450 is mounted on the end of the arc rod 430 , a toggle gear 410 is mounted on the drive shaft 210 , and the arc-shaped rack 420 is meshed with the toggle gear 410 .

[0053] The cross sections of the arc rod 430 and the arc rack 420 are on the same circle, and the piston cylinder 440 is also a concentric arc cylinder.

[0054] The first airbag ring 510 is configured as an eccentric airbag ring that is flat on the top and thick on the bottom after expansion, and the second airbag ring 520 is configured as an eccentric airbag ring that is thick on the top and flat on the bottom after expansion. The first airbag ring 510 is located on the side of the clamping shaft caliper 350 away from the crank 310, and the second airbag ring 520 is located on the side of the clamping shaft caliper 350 adjacent to the crank 310. Due to the self-locking property of the worm wheel 240 and the worm 230, the expansion degree of the first airbag ring 510 and the second airbag ring 520 will also be maintained.

[0055] In this embodiment: by setting the first airbag ring 510 and the second airbag ring 520, when the crank 310 is shaken, the toggle gear 410 will drive the arc-shaped rack 420 to move, so that the piston cylinder 440 slides in the piston plate 450, thereby squeezing the gas in the piston plate 450, and the first airbag ring 510 and the second airbag ring 520 are inflated, so that the retraction and extension of the first airbag ring 510 and the second airbag ring 520 are consistent with the retraction and extension of the clamping shaft caliper 350, and the stabilization effect of the clamping shaft caliper 350 when clamping the rotor is automatically assisted;

[0056] Moreover, the present invention sets the first airbag ring 510 and the second airbag ring 520 as eccentric airbag rings. Since the first airbag ring 510 is on the side of the axle clamp 350 away from the crank 310, that is, the side closer to the rotor, after the first airbag ring 510 expands, the lower end of the first airbag ring 510 is thicker to support the heavy rotor. Similarly, the upper end of the second airbag ring 520 is thicker to press down the end of the rotor motor shaft, thereby minimizing the loss problem of the uneven force on the axle clamp 350 caused by the weight of the center of gravity of the rotor. By reducing the unbalanced force and providing additional support force, it helps to extend the service life of the axle clamp 350 and other related components, thereby reducing maintenance costs and improving the reliability of the overall equipment.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rotor clamping device for three-phase asynchronous motor assembly processing, comprising a sling body (10), a balance beam (20) connected to the top of the sling body (10), a hook (30) movably engaged with the balance beam (20), and a shaft connecting cylinder (40) for connecting to a rotor motor shaft installed at the bottom of the sling body (10), characterized in that: A center plate (110) is arranged in the middle of the shaft connecting tube (40), an end cover (120) is installed at the end of the shaft connecting tube (40), a center shaft (320) is coaxially installed on the side of the center plate (110) away from the end cover, a bracket (340) is installed on the center shaft (320), a plurality of shaft clamps (350) for clamping the rotor motor shaft are arranged in a circular array on the side of the bracket (340), a plurality of the shaft clamps (350) are movably matched with the bracket (340), a crank (310) for controlling the movement of the shaft clamps (350) is rotatably installed on the end cover (120), the crank (310) is connected to the driving shaft (210) on the rotating shaft, and the driving shaft (210) is drivingly connected to the shaft clamps (350); A worm wheel (240) is rotatably mounted on one side of the center plate (110) adjacent to the end cover (120); a support block (250) is fixedly mounted on the center plate (110); a worm (230) is rotatably mounted on the side of the support block (250); the worm (230) is meshed with the worm wheel (240); a first bevel gear (220) is mounted on the drive shaft (210); a second bevel gear (260) is mounted on the end of the worm (230); the worm (230) is meshed with the second bevel gear (260); A clamping shaft toothed disc (330) is rotatably mounted on the upper side of the bracket (340), and a plurality of arc-shaped slots (331) are provided in a circumferential array on the clamping shaft toothed disc (330), and the arc-shaped slots (331) are arranged at an inclination. The clamping shaft caliper (350) is connected to a sliding guide rod (360), and the sliding guide rod (360) is slidably engaged with the bracket (340). A sliding column (361) is arranged on the sliding guide rod (360), and the sliding column (361) is slidably engaged with the arc-shaped slot (331). A driving gear (390) for driving the clamping shaft toothed disc (330) to rotate is rotatably mounted on the bracket (340), and the driving gear (390) is meshed with the clamping shaft toothed disc (330), and the driving shaft (210) is coaxially connected with the driving gear (390).

2. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 1 is characterized in that: A driving disk (130) is rotatably mounted on one side of the center plate (110) adjacent to the center axis (320); a plurality of inclined grooves (140) are arranged in a circumferential array on the driving disk (130); the center axis (320) passes through the driving disk (130); a plurality of reinforcement grooves (160) are arranged in a circumferential array on the center axis (320); the reinforcement grooves (160) correspond to the inclined grooves (140); a reinforcement disk (190) is fixedly mounted on the driving disk (130); a reinforcement column (150) is slidably mounted in the reinforcement disk (190); one end of the reinforcement column (150) is slidably fitted with an inclined surface wall of the inclined surface groove (140); and the other end of the reinforcement column (150) is movably plugged into the reinforcement groove (160).

3. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 2 is characterized in that: A plurality of reinforcing grooves (170) are arranged in a circumferential array on the reinforcing disc (190), the reinforcing grooves (170) corresponding to the inclined grooves (140), the reinforcing columns (150) are slidably inserted in the reinforcing grooves (170), a protrusion (180) is arranged in the reinforcing grooves (170), a reinforcing spring (181) is installed on the protrusion (180), the reinforcing spring (181) is sleeved outside the reinforcing column (150), and an end of the reinforcing spring (181) contacts the reinforcing column (150), and the worm wheel (240) is coaxially connected to the driving disc (130).

4. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 1 is characterized in that: A first airbag ring (510) and a second airbag ring (520) are installed in the shaft connecting tube (40), the first airbag ring (510) and the second airbag ring (520) are sleeved outside the clamping shaft caliper (350), a piston cylinder (440) is installed between the end cover (120) and the center plate (110), the piston cylinder (440) is connected to the second airbag ring (520), a piston plate (450) is slidably installed in the piston cylinder (440), the piston plate (450) and the first airbag ring (510) and the second airbag ring (520) are connected to an air guide tube (530), and the piston plate (450) is drivingly connected to the crank (310); An arc-shaped rack (420) is slidably mounted on the center plate (110), an arc rod (430) is connected to the end of the arc-shaped rack (420), the piston plate (450) is mounted on the end of the arc rod (430), a shifting gear (410) is mounted on the drive shaft (210), and the arc-shaped rack (420) is meshed with the shifting gear (410); The cross sections of the arc rod (430) and the arc-shaped rack (420) are on the same circle, and the piston cylinder (440) is also a concentric arc cylinder.

5. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 4 is characterized in that: When the crank (310) is shaken and the shaft clamp (350) is contracted toward the center, the piston plate (450) simultaneously squeezes the gas in the piston cylinder (440), and the first airbag ring (510) and the second airbag ring (520) expand to tighten the shaft clamp (350); When the crank handle (310) is turned back and the clamping shaft caliper (350) is dispersed outward, the piston plate (450) moves back, and the gas in the first airbag ring (510) and the second airbag ring (520) flows back into the piston cylinder (440).

6. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 4 is characterized in that: The first airbag ring (510) is configured as an eccentric airbag ring that is flat on the top and thick on the bottom after expansion, and the second airbag ring (520) is configured as an eccentric airbag ring that is thick on the top and flat on the bottom after expansion. The first airbag ring (510) is located on a side of the clamping shaft caliper (350) away from the crank (310), and the second airbag ring (520) is located on a side of the clamping shaft caliper (350) adjacent to the crank (310).

7. The rotor clamping device for three-phase asynchronous motor assembly processing according to claim 1 is characterized in that: The shaft clamping caliper (350) is configured as an arc-shaped caliper, and a buffer elastic pad (370) is installed on the inner wall of the shaft clamping caliper (350), and the buffer elastic pad (370) is configured as a rubber pad for adaptively clamping rotor motor shafts of different specifications.

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