Multipurpose regulation and control auxiliary device for disc-type semi-direct-drive permanent magnet motor

Abstract

The invention discloses a multipurpose regulation and control auxiliary device for a disc-type semi-direct-drive permanent magnet motor. The problems that the operation risk is increased due to the fact that a transmission system of an existing disc type semi-direct-drive permanent magnet motor is not provided with limiting and locking protection, and manual operation cannot be achieved after shutdown are mainly solved. The motor is characterized in that a brake chassis (4) is arranged outside the stator frame (3), a brake disc (18) is arranged between the brake chassis (4) and the motor outer side end cover (9), and a friction disc (36) is arranged between the brake disc (18) and the brake chassis (4); an electromagnetic coil (13) is arranged on the motor outer side end cover (9), an armature block (14) is fixed to the position, corresponding to the electromagnetic coil (13), of the brake disc (18), and a reset spring (17) is connected between the motor outer side end cover (9) and the brake disc (18). According to the device, automatic limiting and locking during normal shutdown of the oil pumping unit, manual locking during long-time shutdown to prevent mistaken starting and manual turning displacement of an input shaft of a temporary reduction gearbox can be realized, and the operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, and specifically relates to a multi-purpose regulation and auxiliary device for a disc-type semi-direct-drive permanent magnet motor. Background Art

[0002] The disc-type semi-direct-drive permanent magnet motor is a semi-direct-drive permanent magnet torque motor, which replaces the belt drive. Due to its narrow body thickness, it can be directly installed in the narrow space outside the left input shaft of the reducer of the beam pumping unit to drive the input shaft of the reducer. The existing braking device of the beam pumping unit is on the right side of the input shaft of the reducer, mostly an external clamping braking device. When the pumping unit stops, it is necessary to manually tighten the handle of the external clamping braking device to brake the pumping unit. An important defect of the above structure is that, due to the lack of the transmission structure of the traditional belt part as a mechanical auxiliary locking and fixing fulcrum, once the external clamping braking device fails, or repairs are carried out on this braking part and other repairs related to the reducer part, it will be impossible to limit and lock the protection of the entire pumping unit transmission system, bringing huge safety risks to related operations.

[0003] On the other hand, when the disc-type semi-direct-drive permanent magnet motor stops or loses power, because the relevant adjustment operations of the balance weight part need to be carried out at a horizontal angle, it will cause conflicts between the operations at some positions and the position of the disc-type semi-direct-drive permanent magnet motor, and there is a lack of means to manually adjust the relevant positions of the transmission system. Summary of the Invention

[0004] In order to overcome the deficiencies that the transmission system of the existing disc-type semi-direct-drive permanent magnet motor has no limit locking protection, which increases the operation risk and cannot be manually operated after shutdown, the present invention provides a multi-purpose regulation and auxiliary device for a disc-type semi-direct-drive permanent magnet motor. The multi-purpose regulation and auxiliary device for a disc-type semi-direct-drive permanent magnet motor can realize automatic limit locking when the pumping unit stops normally, manual locking to prevent accidental start-up during long-term shutdown, and manual turning of the input shaft of the temporary reducer for shifting, improving the operation safety.

[0005] The technical solution of the present invention is: a multi-purpose regulation and auxiliary device for a disc-type semi-direct-drive permanent magnet motor, including an outer end cover of the motor and a motor shaft. A rotor seat is fixed outside the motor shaft, and the rotor seat is connected to a rotor frame. It is characterized in that: a brake chassis is arranged outside the stator frame, a brake disc that can slide along the motor shaft is arranged between the brake chassis and the outer end cover of the motor, and friction disc sheets are arranged between the brake disc and the brake chassis; an electromagnetic coil is arranged on the outer end cover of the motor towards the brake disc, an armature block is fixed at a position corresponding to the electromagnetic coil on the brake disc, and a return spring is connected between the outer end cover of the motor and the brake disc.

[0006] It also includes a manual barring assembly, which includes a boosting gear and a pitch-changing gear that mesh with each other. A driving winch is connected to the boosting gear. When the manual barring assembly is fixed to the outer end cover of the motor, the pitch-changing gear meshes with an adjusting gear on the motor shaft.

[0007] A limiting pile is fixed to the outer end cover of the motor towards the brake disc side, and the other end of the limiting pile is located in a limiting groove on the brake disc. The return spring is sleeved outside the limiting pile, and both ends of the return spring are respectively fixed to the outer end cover of the motor and the brake disc.

[0008] A travel switch is fixed to the outer end cover of the motor towards the brake disc side.

[0009] It also includes a locking bolt. When the motor needs to be locked for a long time, the locking bolt passes through the outer end cover of the motor and is tightened on the brake disc, so that the friction disc is in contact with the brake chassis.

[0010] The manual barring assembly also includes a panel and a bottom plate, which are connected by a connecting piece to form a circular cavity. The boosting gear is connected between the panel and the bottom plate through a boosting gear shaft, and the pitch-changing gear is connected between the panel and the bottom plate through a pitch-changing gear shaft.

[0011] The manual barring assembly is fixed to the outer end cover of the motor through manual barring assembly fixing bolts.

[0012] A permanent magnet assembly is arranged outside the rotor frame. The outer end cover of the motor is connected to the inner end cover of the motor through a motor housing. A stator coil is fixed inside the motor housing, and the stator coil corresponds to the permanent magnet assembly.

[0013] When the motor is powered off and stops, the electromagnetic coil loses power, and the return spring pushes the brake disc towards the brake chassis direction, so that the friction disc is in contact with the brake chassis, realizing contact friction locking.

[0014] When using the manual barring assembly, connect the manual barring assembly to the outer panel of the motor through manual barring assembly fixing bolts, connect the driving winch to the boosting gear shaft or the motor shaft, and rotate to drive the motor shaft to rotate by the driving winch.

[0015] The present invention has the following beneficial effects: Due to the adoption of the above solutions, (1) it solves the defect that the pumping unit reducer transmission mode driven by a semi-direct drive permanent magnet motor has no standby hard brake locking system, and can meet the requirement of limiting and locking protection for the entire pumping unit transmission system when the traditional external-holding brake device fails, or when repairing this brake part and when it comes to repairing the reducer, eliminating potential safety hazards.

[0016] (2)Solve the problem that after the disc type semi-direct drive permanent magnet motor stops or loses power, the horizontal adjustment operation of the balance block conflicts with the position of the disc type semi-direct drive permanent magnet motor, and there is a lack of means to manually adjust the relevant positions of the drive system.

[0017] (3)Implement a dual insurance mode of traditional mechanical braking and auxiliary electronic locking braking to improve the operation reliability of the beam pumping unit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the brake disc; Figure 3 is a schematic diagram of the manual brake disc; Figure 4 is a schematic diagram of the manual brake disc after removing the panel; Figure 5 is a schematic diagram of the bottom plate of the manual brake disc; Figure 6 is a schematic diagram of the present invention in the shutdown state; Figure 7 is a schematic diagram of the present invention in the long-term shutdown state; Figure 8 is a control schematic diagram of the present invention; Figure 9 is a schematic diagram of the manual barring operation.

[0019] In the figure: 1 - motor shaft, 2 - rotor seat, 3 - rotor frame, 4 - brake chassis, 5 - magnet assembly, 6 - inner motor end cover, 7 - motor housing, 8 - stator coil, 9 - outer motor end cover, 10 - adjusting gear, 11 - protective shell, 12 - protective shell fixing bolt, 13 - electromagnetic coil, 14 - armature block, 15 - through hole, 16 - threaded hole, 17 - return spring, 18 - brake disc, 19 - limit pile, 20 - bottom plate, 21 - center hole, 22 - driving winch, 23 - manual barring assembly fixing bolt, 24 - limit groove, 25 - panel, 26 - fixing bolt hole, 28 - variable pitch gear shaft, 29 - force adding gear shaft, 30 - variable pitch gear, 31 - force adding gear, 32 - connecting piece, 33 - manual barring assembly, 34 - locking bolt, 35 - travel switch, 36 - friction disc. EMBODIMENTS

[0020] The present invention will be further described below with reference to the accompanying drawings: Consisting of Figures 1 to 9As shown in the figure, a multi-purpose control auxiliary device for a disc-type semi-direct-drive permanent magnet motor includes an outer end cover 9 of the motor and a motor shaft 1. A fixed rotor seat 2 is nested outside the motor shaft 1, and the rotor seat 2 supports and connects a rotor frame 3. A magnet assembly 5 is provided outside the rotor frame 3. Both ends of the motor shaft 1 pass through the outer end cover 9 and the inner end cover 6 of the motor respectively, and one inner end of the motor shaft 1 is connected to the input shaft of the speed reducer. The outer end cover 9 of the motor is connected to the inner end cover 6 of the motor through a motor housing 7. A stator coil 8 is fixed inside the motor housing 7. The stator coil 8 corresponds to the magnet assembly 5 and maintains a certain gap.

[0021] A flaky friction brake chassis 4 is provided outside the stator frame 3. According to the distribution of the structural cavity area in the middle of the rotor frame 3, there are corresponding cavity areas on the surface of the brake chassis 4 for ventilation and heat dissipation. A brake disc 18 is provided between the brake chassis 4 and the outer end cover 9 of the motor. The brake disc 18 is located outside the motor shaft 1 and can slide along the motor shaft 1. A friction disc 36 is provided between the brake disc 18 and the brake chassis 4. The friction disc 36 is riveted on the brake disc 18, and the right end face of the friction disc 36 can achieve good planar contact with the brake chassis 4.

[0022] The outer end cover 9 of the motor is provided with an electromagnetic coil 13 on the side towards the brake disc 18. An armature block 14 is fixed at the position corresponding to the electromagnetic coil 13 on the brake disc 18. When the electromagnetic coil 13 is energized, it can adsorb the armature block 14, thereby driving the brake disc 18 to move leftward, so that the friction disc 36 is separated from the brake chassis 4. A limit post 19 is fixed on the outer end cover 9 of the motor on the side towards the brake disc 18. The other end of the limit post 19 is located in the limit groove 24 on the brake disc 18, and the end of the limit post 19 does not contact the brake chassis 4. A return spring 17 is provided outside the limit post 19, and both ends of the return spring 17 are fixed on the outer end cover 9 and the brake disc 18 respectively. When the motor is powered off, the electromagnetic coil 13 loses power and disconnects from the armature block 14. At this time, the return spring 17 pushes the brake disc 18 towards the brake bottom plate 4, so that the friction disc 36 is locked on the brake chassis 4. A travel switch 35 is fixed on the outer end cover 9 of the motor on the side towards the brake disc 18. The travel switch 35 can verify whether the brake disc 18 and the brake chassis 4 are actually in close contact and feedback to the controller.

[0023] A through hole 15 is opened on the outer end cover 9 of the motor. A threaded hole 16 is opened on the brake disc 18 corresponding to the through hole 15, and the inner diameter of the through hole 15 is larger than that of the threaded hole 16. When the motor needs to be locked for a long time, a locking bolt 34 passes through the through hole 15 and is tightened in the threaded hole 16, pushing the brake disc 18 to the right, so that the friction disc 36 is in contact with the brake chassis 4. A central hole 21 is opened at the center of the outer end cover 9 of the machine. The end of the motor shaft 1 is connected to an adjusting gear 10. The adjusting gear 10 extends from the central hole 21, and a protective shell 11 is provided outside the adjusting gear 10. The protective shell 11 is fixed on the outer end cover 9 of the motor through protective shell fixing bolts 12.

[0024] It further includes a manual barring assembly 33. The manual barring assembly 33 includes a panel 25 and a bottom plate 20, which are connected by a connecting piece 32 to form a circular cavity. Inside the circular cavity, there are a boosting gear 31 and a pitch-changing gear 30, which are meshed with each other. The boosting gear 31 is connected between the panel 25 and the bottom plate 20 through a boosting gear shaft 29, and the pitch-changing gear 30 is connected between the panel 25 and the bottom plate 20 through a pitch-changing gear shaft 28. And the end of the boosting gear shaft 29 is connected to a driving winch 22.

[0025] When the manual barring assembly 33 is in use, a manual barring assembly fixing bolt 23 passes through the panel 25 and the bottom plate 20 and the through hole 15 on the outer end cover 9 of the motor and is then connected to the threaded hole 16 on the brake disc 18, so as to fix the manual barring assembly 33 on the outer end cover 9 of the motor. At this time, the pitch-changing gear 30 is meshed with the adjusting gear 10 on the motor shaft 1.

[0026] For this disc-type semi-direct-drive permanent magnet motor, according to the differences in size specifications, to improve the operation safety level of the device, the paired numbers of the electromagnetic coils 13 and the armature blocks 14, the paired numbers of the brake disc limit posts 19, the return springs 17 and the limit grooves 24, and the numbers of each group of paired bolts can be increased or decreased as appropriate. At the same time, according to the differences in size specifications and the requirements of operation facilitation of the disc-type semi-direct-drive permanent magnet motor, the numbers of gears, the reduction ratio and the appearance dimensions in the manual barring assembly 33 can be increased or enlarged arbitrarily. For example, the operation position of the driving winch 22 is adjusted outside the diameter of the disc-type semi-direct-drive permanent magnet motor to improve operation safety. And by changing the position of the adjustable boosting gear, the problem of adjusting the motor position at the eccentric position under the limitation of the central position is solved.

[0027] A coil controller is added between the disc-type semi-direct-drive permanent magnet motor and the controller. Before starting, the coil controller is used to control multiple groups of electromagnetic coils 13 to be powered on first. The electromagnetic coils 13 attract the armature blocks 14 on the brake disc 18 and compress the return springs 17. The brake disc 18 is in a separated state from the brake chassis 4 and is continuously powered on and locked. The travel switch 35 is used as the state monitoring switch of the brake disc 18 to verify whether the brake disc 18 is actually separated from the brake chassis 4 and feedback it to the controller. The controller confirms that there is no error according to the feedback signal and then supplies power to the motor to realize the operation of the motor.

[0028] When the motor is powered off and stops, the electromagnetic coils 13 lose power at the same time. The return springs 17 push the brake disc 18 to move towards the brake chassis 4 and achieve contact friction locking to achieve the purpose of locking the movement of the motor. The travel switch 35 verifies whether the brake disc 18 is actually in close contact with the brake chassis 4 and feedbacks it to the controller.

[0029] When the disc-type semi-direct-drive permanent magnet motor is shut down for a long time or during construction operations, loosen the fixing bolts 12 of the protective shell, remove the protective shell 11, pass the locking bolts 34 through the through holes 15 on the outer end cover 9 of the motor and lock them in the threaded holes 16 on the brake disc 18. Through the cooperation of the 3 locking bolts 34, firmly attach the brake disc 18 to the brake chassis 4 to prevent the motor from shifting and slipping. At the same time, the travel switch 35 verifies whether the brake disc 18 and the brake chassis 4 are separated and locked, and feeds back to the controller.

[0030] When the manual barring assembly 33 is in use, it needs to be temporarily installed on the outer panel 9 of the motor. First, loosen the fixing bolts 12 of the protective shell, remove the protective shell 11, center and align the manual barring assembly 33 with the adjusting gear 10 and insert it into the corresponding position to engage the adjusting gear 10 with the pitch-changing gear 30; then use the manual barring assembly fixing bolts 23 that match the threaded holes 16, pass through the through holes 15 and the fixing bolt holes 26 and then screw them into the threaded holes 16 and tighten them, so as to fix the manual barring assembly 33 on the outer panel 9 of the motor. Connect the driving winch 22 to the force-increasing gear shaft 29 or the motor shaft 1 according to the position and torque requirements, and rotate it forward and backward as needed to achieve the purpose of driving the rotation and movement of the motor shaft 1.

Claims

1. A multi-purpose regulation and auxiliary device for a disc-type semi-direct-drive permanent magnet motor, comprising an outer end cover (9) of the motor and a motor shaft (1). A rotor seat (2) is fixed outside the motor shaft (1), and the rotor seat (2) is connected to a rotor frame (3). It is characterized in that: A brake chassis (4) is provided outside the stator frame (3). A brake disc (18) that can slide along the motor shaft (1) is provided between the brake chassis (4) and the outer end cover (9) of the motor. A friction disc (36) is provided between the brake disc (18) and the brake chassis (4). An electromagnetic coil (13) is provided on the outer end cover (9) of the motor facing the brake disc (18). An armature block (14) is fixed at a position corresponding to the electromagnetic coil (13) on the brake disc (18). A return spring (17) is connected between the outer end cover (9) of the motor and the brake disc (18).

2. The multi-purpose regulation auxiliary device for the disc-type semi-direct drive permanent magnet motor according to claim 1, wherein: It further includes a manual turning component (33). The manual turning component (33) includes a force - adding gear (31) and a pitch - changing gear (30) which are meshed with each other. A driving winch (22) is connected to the force - adding gear (31). When the manual turning component (33) is fixed on the outer end cover (9) of the motor, the pitch - changing gear (30) is meshed with an adjusting gear (10) on the motor shaft (1).

3. The multi-purpose control auxiliary device for the disk-type semi-direct drive permanent magnet motor according to claim 2, characterized in that: A limit post (19) is fixed on the outer end cover (9) of the motor facing the brake disc (18). The other end of the limit post (19) is located in a limit groove (24) on the brake disc (18). The return spring (17) is sleeved outside the limit post (19), and both ends of the return spring (17) are respectively fixed on the outer end cover (9) of the motor and the brake disc (18).

4. The multi-purpose control auxiliary device for the disc type semi-direct drive permanent magnet motor according to claim 3, characterized in that: A travel switch (35) is fixed on the outer end cover (9) of the motor facing the brake disc (18).

5. The multi-purpose regulation auxiliary device for the disc-type semi-direct-drive permanent magnet motor according to claim 4, characterized in that: It further includes a locking bolt (34). When the motor needs to be locked for a long time, the locking bolt (34) passes through the outer end cover (9) of the motor and is tightened on the brake disc (18) to make the friction disc (36) contact the brake chassis (4).

6. The multi-purpose control auxiliary device for the disc-type semi-direct drive permanent magnet motor according to claim 2, characterized in that: The manual turning component (33) further includes a panel (25) and a bottom plate (20). The two are connected by a connecting piece (32) to form a circular cavity. The force - adding gear (31) is connected between the panel (25) and the bottom plate (20) through a force - adding gear shaft (29). The pitch - changing gear (30) is connected between the panel (25) and the bottom plate (20) through a pitch - changing gear shaft (28).

7. The multi-purpose regulation auxiliary device for the disc-type semi-direct-drive permanent magnet motor according to claim 6, wherein: The manual turning component (33) is fixed on the outer end cover (9) of the motor through a manual - turning - component fixing bolt (23).

8. The multi-purpose control auxiliary device for the disc-type semi-direct drive permanent magnet motor according to any one of claims 1-7, characterized in that: A magnet assembly (5) is provided outside the rotor frame (3). The outer end cover (9) of the motor is connected to the inner end cover (6) of the motor through a motor housing (7). A stator coil (8) is fixed inside the motor housing (7), and the stator coil (8) corresponds to the magnet assembly (5).

9. The multi-purpose regulation auxiliary device for the disc-type semi-direct drive permanent magnet motor according to claim 8, characterized in that: When the motor is powered off and stops, the electromagnetic coil (13) loses power, and the return spring (17) pushes the brake disc (18) to move towards the brake chassis (4) direction, making the friction disc (36) contact the brake chassis (4) to achieve contact - friction locking.

10. The multi-purpose control auxiliary device for the disc-type semi-direct-drive permanent magnet motor according to claim 9, characterized in that: When using the manual turning component (33), connect the manual turning component (33) to the outer panel (9) of the motor through the manual - turning - component fixing bolt (23). Connect the driving winch (22) to the force - adding gear shaft (29) or the motor shaft (1), and rotate to drive the driving winch (22) to drive the motor shaft (1) to rotate.

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