A locking and rotating device for a motor shaft

Abstract

The utility model discloses a locking and rotating device of motor shaft, including the locking rotation mechanism for locking motor rotor shaft and supporting motor rotor shaft rotation, the drive unit for driving locking rotation mechanism rotation to make motor rotor shaft rotate, the support seat for connecting locking rotation mechanism and drive unit, be equipped with first through -hole and mounting hole on the support seat, still be equipped with the second through -hole with the mounting hole through -going on the support seat, locking mechanism is installed in the first through -hole, drive unit is installed in the mounting hole, and locking mechanism passes through the second through -hole, the structure of the utility model solves above -mentioned complex structure, and the operation difficulty is big, makes the technical problem of higher cost.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a locking and rotating device for a motor shaft. Background Technology

[0002] Today, brushless DC motors are widely used in fields such as home appliances, industrial automation, transportation, medical equipment, aerospace, consumer electronics, and high-end manufacturing. With their advantages of high reliability, energy efficiency, and precise control, they have become a core power component in modern mechatronics. One of the core components of a brushless DC motor is the rotor, which consists of a rotor shaft, magnets, and an iron core. As the rotating part of the motor, the rotor's main function is to generate torque through interaction with the stator's magnetic field, driving the motor's rotation. The installation process of the motor rotor includes pressing the iron core, applying adhesive to the magnets, and testing and adjusting the balance. During installation and testing, clamping equipment and tooling for the rotor shaft, as well as a rotation mechanism for the rotor shaft at different speeds, are required.

[0003] In the existing technology, the technical level of devices for locking and rotating the rotor shaft of motors varies. Most of them are multi-part split structures, which are complex, have complicated operation steps, require a large number of personnel, resulting in a high failure rate, high price, excessive maintenance costs, and long downtime during maintenance. Utility Model Content

[0004] This utility model provides a locking and rotating device for a motor shaft. The technical solution of this utility model to solve the above-mentioned technical problems of high cost due to complex structure and difficult operation is as follows: A locking and rotating device for a motor shaft includes a locking and rotating mechanism for locking the motor rotor shaft and supporting its rotation, a driving unit for driving the locking and rotating mechanism to rotate, thereby rotating the motor rotor shaft, and a support base for connecting the locking and rotating mechanism and the driving unit. The support base has a first through hole and a mounting hole, and also has a second through hole communicating with the mounting hole. The locking mechanism is installed in the first through hole, the driving unit is installed in the mounting hole, and the locking mechanism passes through the second through hole.

[0005] Furthermore, the locking rotation mechanism includes a locking mechanism, a first bearing, a second bearing, a first bearing retaining ring, a second bearing retaining ring, a roller, and a roller end cap. Positioning grooves are provided on both sides of the first through hole of the support base. The first bearing and the second bearing are respectively installed in the positioning grooves on both sides of the first through hole. The first bearing retaining ring is installed on the outside of the first bearing, and the second bearing retaining ring is installed on the outside of the second bearing. The roller passes through the first through hole, the first bearing, the first bearing retaining ring, the second bearing, and the second bearing retaining ring simultaneously. The roller is connected to the locking mechanism, and the roller end cap is installed at the end of the roller.

[0006] Furthermore, the locking mechanism includes a pneumatic rotary head, a cylindrical cylinder, a clamping body, a collet, a spring, and a pressure cap. The cylindrical cylinder is connected to the roller via a roller end cap. The pneumatic rotary head is connected to the cylindrical cylinder. The cylindrical cylinder has a piston rod, which is connected to the clamping body. The clamping body has a conical hole. The outer circumferential surface of the collet is a conical surface. A portion of the collet is located inside the conical hole of the clamping body. The spring surrounds the portion of the collet exposed outside the clamping body. The pressure cap is connected to the roller, and the pressure cap and the collet abut against each other.

[0007] Furthermore, the drive unit includes a belt drive mechanism, a drive control module, a motor, a gearbox, and a tensioning sleeve. The drive control module is connected to the motor, the motor is connected to the gearbox, and the output shaft of the gearbox is connected to the belt drive mechanism through the tensioning sleeve.

[0008] The belt drive mechanism includes a driving pulley, a driven pulley, and a belt. The driving pulley is connected to the output shaft of the gearbox through a tensioning sleeve, the driven pulley is connected to a locking and rotating mechanism, and the belt is connected to both the driving pulley and the driven pulley.

[0009] Furthermore, it also includes a first locking sleeve and a second locking sleeve for preventing axial movement of the locking rotation mechanism during rotation, the first locking sleeve and the second locking sleeve being respectively installed on the locking rotation mechanism.

[0010] In this invention, the support base connects the locking rotation mechanism and the drive unit. The locking rotation mechanism locks the motor rotor shaft, and the drive unit provides driving force. The drive unit has a belt drive mechanism, which transmits the driving force of the drive unit to the locking rotation mechanism, causing the locking rotation mechanism to rotate, thereby causing the motor rotor shaft to rotate. This invention can simultaneously clamp the motor rotor shaft and rotate the motor rotor shaft at different speeds. It features a simple mechanism and convenient operation, while reducing the labor and technical costs required for production. Attached Figure Description

[0011] Figure 1 This is an assembly drawing of a locking and rotating device for a motor shaft.

[0012] Figure 2 This is a cross-sectional view of the locking rotary mechanism.

[0013] Figure 3 This is a three-dimensional view of the support base.

[0014] Figure 4 This is a diagram showing the fit between the collet and the spring.

[0015] Support base 1, first through hole 1a, mounting hole 1b, second through hole 1c, third through hole 1d, first bearing 2, second bearing 3, first bearing retaining ring 4, second bearing retaining ring 5, roller 6, second locking nut 6a, roller end cover 7, pneumatic rotating head 8, cylindrical cylinder 9, piston rod 9a, first locking nut 9b.

[0016] Clamp body 10, collet 11, spring 12, pressure cap 13, drive control module 14, motor 15, gearbox 16, tension sleeve 17, drive wheel 18, driven wheel 19, belt 20, first locking sleeve 21, second locking sleeve 22. Detailed Implementation

[0017] like Figures 1 to 4 As shown, a locking and rotating device for a motor shaft includes a locking and rotating mechanism for locking the motor rotor shaft and supporting its rotation, a driving unit for driving the locking and rotating mechanism to rotate, thereby rotating the motor rotor shaft, and a support base 1 for connecting the locking and rotating mechanism and the driving unit. The support base 1 has a first through hole 1a and a mounting hole 1b, and also has a second through hole 1c that communicates with the mounting hole 1b. The locking mechanism is installed in the first through hole 1a, the driving unit is installed in the mounting hole 1b, and the locking mechanism passes through the second through hole 1c.

[0018] The locking and rotating mechanism includes a locking mechanism, a first bearing 2, a second bearing 3, a first bearing retaining ring 4, a second bearing retaining ring 5, a roller 6, and a roller end cap 7. Positioning grooves are provided on both sides of the first through hole 1a of the support base 1. The depth of the positioning grooves matches the height of the first bearing 1 and the second bearing 3. The first bearing 2 and the second bearing 3 are respectively installed in the positioning grooves on both sides of the first through hole 1a. The first bearing retaining ring 4 is installed on the outside of the first bearing 2, and the second bearing retaining ring 5 is installed on the outside of the second bearing 3. The first bearing retaining ring 4 and the second bearing retaining ring 5 are used to block the first bearing 2 and the second bearing 3, respectively, to prevent… The first bearing 2 and the second bearing 3 move back and forth. The inner diameter of the first through hole 1a is slightly larger than the outer diameter of the roller 6. For example, the difference between the inner diameter of the first through hole 1a and the outer diameter of the roller 6 is less than 0.5mm. The roller 6 passes through the first through hole 1a, the first bearing 2, the first bearing retaining ring 4, the second bearing 3, and the second bearing retaining ring 5. The roller 6 is mounted on the inner rings of the first bearing 2 and the second bearing 3. The first bearing 2 and the second bearing 3 are both used to support the rotation of the roller 6. The roller 6 is connected to the locking mechanism. The roller end cover 7 is installed at the end of the roller 6. In this embodiment, the roller end cover 7 is located outside the roller 6 and is fixed to the roller 6 with screws.

[0019] The locking mechanism includes a pneumatic rotary head 8, a cylindrical cylinder 9, a clamping body 10, a collet 11, a spring 12, and a pressure cap 13. The cylindrical cylinder 9, clamping body 10, collet 11, and spring 12 are located inside the roller 6. The cylindrical cylinder 9 is fixed to the roller end cover 7, thus both the cylindrical cylinder 9 and the roller 6 are fixed to the roller end cover 7. The roller end cover 7 has a through hole through which the pneumatic rotary head 8 passes and connects to the cylindrical cylinder 9. The cylindrical cylinder 9 has a piston rod 9a with threads, which is threaded to the clamping body 10. The piston rod 9a also has a first locking nut 9b, which is used to limit the position of the clamping body 10. The clamping body 10 has a conical hole, and the outer circumferential surface of the collet 11 is conical. A portion of the collet 11 is located within the conical hole of the clamping body 10. The spring 12 surrounds the portion of the collet 11 exposed outside the clamping body 10. The end of the roller 6 is threaded, and the pressure cap 13 is... The roller 6 is threadedly connected to the roller 6, and the roller 6 is also provided with a second locking nut 6a. The pressure cap 13 cooperates with the second locking nut 6a. The second locking nut 6a is used to limit the position of the pressure cap 13. The pressure cap 13 and the collet 11 abut against each other, that is, one end of the collet 11 abuts against the inner end face of the pressure cap 13, thereby limiting the collet 11. In this utility model, under the push of the cylindrical cylinder 9 (feeding towards the pressure cap 13), the clamp body 10 is squeezed by the conical surface inside it and the conical surface outside the collet 11. Since the pressure cap 13 limits the collet 11, the collet 11 deforms and locks the motor rotor shaft in the inner hole of the collet 11. When the cylindrical cylinder 9 stops feeding, the clamp body 11 moves back to the direction of the cylindrical cylinder 9 under the elastic force of the spring 12, thereby releasing the locking force of the clamp body 10 on the collet 11, and the motor rotor shaft can be taken out from the collet 11.

[0020] The drive unit includes a belt drive mechanism, a drive control module 14, a motor 15, a gearbox 16, and a tensioning sleeve 17. The drive control module 14 is connected to the motor 15, and the motor 15 is connected to the gearbox 16. The drive control module 14, motor 15, and gearbox 16 are connected to form an integrated drive structure. The drive control module 14, motor 15, and gearbox 16 have good compatibility in installation and use; that is, during assembly, there is no need to rely on external connecting flanges or other connectors or other series mechanisms. The drive unit utilizes the gearbox 16, motor 15, and the built-in tensioning sleeve 17. The three components can be tightly connected together by connecting the fixing holes. It has high output torque and stable operation. It is easy to install and debug, and does not require an external motor drive unit, saving wiring and driver placement space. The output shaft of the gearbox 16 is connected to the belt drive mechanism through the expansion sleeve 17. The gearbox 16 is also connected to the support base 1. The gearbox 16 is provided with four screw holes. The support base 1 is provided with four third through holes 1d around the second through hole 1c. The third through holes 1d correspond one-to-one with the screw holes on the gearbox 16. The gearbox 16 and the support base 1 are fastened together by screws.

[0021] The belt drive mechanism includes a drive pulley 18, a driven pulley 19, and a belt 20. The drive pulley 18 is locked to the output shaft of the gearbox 16 by the radial pressure and friction generated by the bolts on the tension sleeve 17. The driven pulley 19 is connected to the roller 6 in the locking rotation mechanism and is pressed onto the roller 6 by an interference fit. The belt 20 is connected to both the drive pulley 18 and the driven pulley 19. The drive pulley 18 drives the belt 20 to rotate. When the motor 15 is working, it outputs torque to the gearbox 16, thereby driving the rotation of the driven pulley 19.

[0022] It also includes a first locking sleeve 21 and a second locking sleeve 22 to prevent axial movement of the locking rotating mechanism during rotation. The first locking sleeve 21 and the second locking sleeve 22 are respectively installed on the locking rotating mechanism. Both the first locking sleeve 21 and the second locking sleeve 22 are locking sleeves with a locking seam in the middle and are locked with high-strength bolts. The first locking sleeve 21 and the second locking sleeve 22 are both locked onto the cylinder body of the drum 6 by bolt tightening, which compresses and deforms the locking sleeves. The first locking sleeve 21 passes through the first bearing retaining ring 4 and abuts against the first bearing 2. The second locking sleeve 22 passes through the second bearing retaining ring 5 and abuts against the second bearing 3. In this way, the support seat 1, the first bearing 2, and the second bearing 3 are clamped between the first locking sleeve 21 and the second locking sleeve 22, which prevents axial movement of the drum 6, the first bearing 2, and the second bearing seat 3 during long-term rotation, thereby maintaining the stability of the mechanism.

[0023] The specific working process of this utility model is as follows: First, insert the motor rotor shaft to be tested or coated with adhesive into the collet 11 of the locking and rotating mechanism. Open the solenoid valve connected to the pneumatic rotating head 8 (the solenoid valve is not shown in the figure). The pneumatic rotating head 8 provides working air to the cylindrical cylinder 9. The piston rod 9a of the cylindrical cylinder 9 moves towards the pressure cap 13, causing the clamp 10 to overcome the elastic force of the spring 12 and move towards the pressure cap 13. The spring 12 is compressed, and due to the limiting effect of the pressure cap 13 on the collet 11, the collet 11 deforms under the pressure of the conical surface on the clamp 10, thereby locking the motor rotor shaft. Then, the drive unit starts to work. The drive control module 14 drives the motor 15 at a set speed through current or speed mode. The motor 15 outputs torque to the reduction gearbox 16, causing the reduction gearbox 16 to rotate. The drive wheel at the front end of the reduction gearbox 16... 18 then rotates, driving belt 20 to rotate, which in turn drives driven wheel 19 to rotate. The rotation of driven wheel 19 drives the rotation of roller 6. As the pneumatic rotary head 8 provides working air to cylindrical cylinder 9 while roller 6 is rotating, the motor rotor shaft is clamped and rotates with roller 6. After testing or gluing is completed, drive control module 14 stops driving motor 15 to rotate, roller 6 stops rotating, and solenoid valve is closed to stop air supply. Cylindrical cylinder 9 loses the force to push piston rod 9a forward. At this time, compressed spring 12 releases its elastic force to push clamp 10 backward. Clamp 10 drives piston rod 9a to retract into cylinder of cylindrical cylinder 9. Collet 11 loses the pressure of clamp 10 and resets. Collet 11 releases the clamping force on motor rotor shaft, and finally the motor rotor shaft can be removed.

Claims

1. A locking and rotating device for a motor shaft, characterized in that, It includes a locking rotating mechanism for locking the motor rotor shaft and supporting the rotation of the motor rotor shaft, a drive unit for driving the locking rotating mechanism to rotate so that the motor rotor shaft rotates, and a support base (1) for connecting the locking rotating mechanism and the drive unit. The support base (1) is provided with a first through hole (1a) and a mounting hole (1b). The support base (1) is also provided with a second through hole (1c) that communicates with the mounting hole (1b). The locking mechanism is installed in the first through hole (1a), the drive unit is installed in the mounting hole (1b), and the locking mechanism passes through the second through hole (1c).

2. The locking and rotating device for a motor shaft according to claim 1, characterized in that, The locking and rotating mechanism includes a locking mechanism, a first bearing (2), a second bearing (3), a first bearing retaining ring (4), a second bearing retaining ring (5), a roller (6), and a roller end cap (7). The first through hole (1a) of the support base (1) is provided with positioning grooves on both sides. The first bearing (2) and the second bearing (3) are respectively installed in the positioning grooves on both sides of the first through hole (1a). The first bearing retaining ring (4) is installed on the outside of the first bearing (2), and the second bearing retaining ring (5) is installed on the outside of the second bearing (3). The roller (6) passes through the first through hole (1a), the first bearing (2), the first bearing retaining ring (4), the second bearing (3), and the second bearing retaining ring (5) at the same time. The roller (6) is connected to the locking mechanism, and the roller end cap (7) is installed at the end of the roller (6).

3. The locking and rotating device for a motor shaft according to claim 2, characterized in that, The locking mechanism includes a pneumatic rotary head (8), a cylindrical cylinder (9), a clamp (10), a collet (11), a spring (12), and a pressure cap (13). The cylindrical cylinder (9) is fixed to the roller end cap (7). The pneumatic rotary head (8) is connected to the cylindrical cylinder (9). The cylindrical cylinder (9) has a piston rod (9a) which is connected to the clamp (10). The clamp (10) has a conical hole. The outer circumferential surface of the collet (11) is a conical surface. A part of the collet (11) is located in the conical hole of the clamp (10). The spring (12) surrounds the part of the collet (11) exposed outside the clamp (10). The pressure cap (13) is connected to the roller (6). The pressure cap (13) and the collet (11) abut against each other.

4. The locking and rotating device for a motor shaft according to claim 1, characterized in that, The drive unit includes a belt drive mechanism, a drive control module (14), a motor (15), a gearbox (16), and a tensioning sleeve (17). The drive control module (14) is connected to the motor (15), the motor (15) is connected to the gearbox (16), and the output shaft of the gearbox (16) is connected to the belt drive mechanism through the tensioning sleeve (17).

5. The locking and rotating device for a motor shaft according to claim 4, characterized in that, The belt drive mechanism includes a drive pulley (18), a driven pulley (19), and a belt (20). The drive pulley (18) is connected to the output shaft of the gearbox (16) through a tension sleeve (17). The driven pulley (19) is connected to a locking rotation mechanism. The belt (20) is connected to the drive pulley (18) and the driven pulley (19) respectively.

6. The locking and rotating device for a motor shaft according to claim 1, characterized in that, It also includes a first locking sleeve (21) and a second locking sleeve (22) for preventing axial movement of the locking rotation mechanism during rotation. The first locking sleeve (21) and the second locking sleeve (22) are respectively installed on the locking rotation mechanism.

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