Shaft mounting structure of torque motor

Abstract

A shaft mounting structure of a torque motor relates to the field of torque motors, a screw sleeve is rotated through a rotary connecting mechanism, and a screw rod is in threaded transmission connection with the screw sleeve, so that a motor rotor moves inwards in the axial direction, and finally the motor rotor is gradually mounted into a motor stator, and a rotating shaft is inserted into a shaft hole of the motor rotor; in the whole process, the motor rotor and the motor stator are always coaxial, accurate installation of the motor rotor and the motor stator is ensured, the motor rotor is prevented from being attracted by magnetic attraction force to cause damage to a permanent magnet and injury to operators, and the assembly efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of torque motors, and specifically to a torque motor shaft mounting structure. Background Technology

[0002] The outer ring of the rotor of the torque motor is covered with permanent magnets. When the torque motor is installed on the shaft, the rotor and stator of the motor will be strongly attracted together by magnetic attraction, which can easily damage the permanent magnets. After the rotor is inserted into the shaft, it is not easy to ensure that the shaft and rotor are coaxial, nor is it easy to ensure that the rotor mounting hole is aligned with the mounting hole on the shaft. If the operation is improper, it may also injure the operator. Summary of the Invention

[0003] In order to overcome the shortcomings of the above technologies, this utility model provides a mounting structure that ensures the accurate installation of the motor rotor onto the rotating shaft of the torque motor.

[0004] The technical solution adopted by this utility model to overcome its technical problem is:

[0005] A torque motor shaft mounting structure includes a bushing, a motor stator coaxially fixed within the bushing, and a rotating shaft coaxially rotatably mounted within the bushing via bearing I. It also includes:

[0006] The screw is mounted on the head end of the rotating shaft via a detachable mechanism I, and the screw is coaxial with the rotating shaft;

[0007] A connecting plate, which is horizontally mounted to the head end of the motor rotor via a detachable mechanism II; and

[0008] The threaded sleeve is rotatably mounted on the connecting plate via a rotating connection mechanism, with the head end of the screw screwed into the threaded sleeve.

[0009] Furthermore, the aforementioned detachable mechanism I includes bolt II, which passes through the tail end of the screw and is screwed and fixed to the head end of the rotating shaft.

[0010] Furthermore, the aforementioned detachable mechanism II includes bolt I, which passes through the connecting plate and is screwed onto the motor rotor.

[0011] Furthermore, the aforementioned rotating connection mechanism includes a bearing II embedded in a connecting plate, a threaded sleeve inserted into the inner hole of the bearing II, a pressure plate fixed to the connecting plate by bolts III, the pressure plate pressing against the outer ring of the bearing II, and a lock nut screwed onto the threaded end of the outer end of the threaded sleeve, pressing against the inner ring of the bearing II.

[0012] To improve the smoothness of movement, a guide mechanism is also included on the motor rotor, which guides the motor rotor axially as it moves along the axis.

[0013] Furthermore, the aforementioned guiding mechanism includes a screw hole on the rotating shaft and a guide hole on the motor rotor. The axis of the guide hole is parallel to the axis of the motor rotor. The guide hole and the screw hole are coaxially arranged. A guide rod is coaxially fixed at the head end of the stud, and the tail end of the stud is screwed into the screw hole. The guide rod is slidably installed in the guide hole.

[0014] The beneficial effects of this utility model are as follows: by rotating the screw sleeve through the rotating connection mechanism, the screw and the screw sleeve are connected by a threaded transmission, thereby causing the motor rotor to move inward along the axial direction, and finally gradually inserting it into the motor stator and inserting the rotating shaft into the shaft hole of the motor rotor. The whole process ensures that the motor rotor and the motor stator are always coaxial, ensuring that the motor rotor and the motor stator are accurately installed, so that the motor rotor will not be damaged by magnetic attraction, and the permanent magnet will not be damaged or the operator will be injured. This improves assembly efficiency and safety. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention.

[0016] In the diagram, 1. Bushing 2. Bearing I 3. Rotating shaft 4. Screw hole 5. Motor rotor 6. Guide hole 7. Stud 8. Guide rod 9. Screw 10. Screw sleeve 11. Locking nut 12. Bearing II 13. Pressure plate 14. Connecting plate 15. Bolt I 16. Motor stator 17. Bolt II 18. Bolt III. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 The present invention will be further described below.

[0018] A torque motor mounting structure includes a bushing 1, a motor stator 16 coaxially fixed within the bushing 1, and a rotating shaft 3 coaxially rotatably mounted within the bushing 1 via a bearing I 2. It also includes: a screw 9 mounted to the head end of the rotating shaft 3 via a detachable mechanism I, the screw 9 being coaxially arranged with the rotating shaft 3; a connecting plate 14 horizontally mounted to the head end of the motor rotor 5 via a detachable mechanism II; and a threaded sleeve 10 rotatably mounted on the connecting plate 14 via a rotating connecting mechanism, the head end of the screw 9 being screwed into the threaded sleeve 10. When the motor rotor 5 needs to be installed, the screw sleeve 10 is rotated through the rotating connection mechanism. Since the screw 9 is connected to the screw sleeve 10 by threaded transmission, the motor rotor 5 moves axially inward, and is eventually installed into the motor stator 16, with the rotating shaft 3 inserted into the shaft hole of the motor rotor 5. After the motor rotor 5 is installed in place, the screw 9 is removed from the rotating shaft 3 through the detachable mechanism I, and the connecting plate 14 and the rotating connection mechanism are removed from the motor rotor 5 through the detachable mechanism II, completing the torque motor shaft operation. Throughout the process, the motor rotor 5 and the motor stator 16 are always coaxial, ensuring precise installation of the motor rotor 5 and the motor stator 16. This prevents the permanent magnet from being broken due to magnetic attraction and avoids injury to the operator, improving assembly efficiency and safety.

[0019] In one embodiment of this utility model, the detachable mechanism I includes a bolt II 17, which passes through the tail end of the screw 9 and is screwed onto the head end of the rotating shaft 3. Using bolt II 17 to fix the screw 9 to the rotating shaft 3 simplifies installation and disassembly, improving assembly efficiency.

[0020] In one embodiment of this utility model, the detachable mechanism II includes bolt I 15, which passes through the connecting plate 14 and screws onto the motor rotor 5. Using bolt I 15 to fix the connecting plate 14 to the motor rotor 5 simplifies installation and disassembly, improving assembly efficiency.

[0021] In one embodiment of this utility model, the rotating connection mechanism includes a bearing II 12 embedded in a connecting plate 14, a threaded sleeve 10 inserted into the inner hole of the bearing II 12, a pressure plate 13 fixed to the connecting plate 14 by bolts III 18, the pressure plate 13 pressing against the outer ring of the bearing II 12, and a locking nut 11 screwed onto the threaded end of the outer end of the threaded sleeve 10, pressing against the inner ring of the bearing II 12. By using the pressure plate 13 to fix the outer ring of the bearing II 12 and the locking nut 11 to fix the inner ring of the bearing II 12, the threaded sleeve 10 can rotate relative to the connecting plate 14 through the bearing II 12.

[0022] In one embodiment of this utility model, a guide mechanism is further provided on the motor rotor 5. When the motor rotor 5 moves axially, it is guided axially by the guide mechanism. By providing the guide mechanism, not only can the motor rotor 5 be prevented from rotating itself when moving axially, but its guiding performance along the axial direction can also be improved.

[0023] In this embodiment, the guiding mechanism includes a screw hole 4 on the rotating shaft 3 and a guide hole 6 on the motor rotor 5. The axis of the guide hole 6 is parallel to the axis of the motor rotor 5. The guide hole 6 and the screw hole 4 are coaxially arranged. A guide rod 8 is coaxially fixed to the head end of the stud 7, and the tail end of the stud 7 is screwed into the screw hole 4. The guide rod 8 is slidably installed in the guide hole 6. When the screw sleeve 10 is rotated, the guide rod 8 slides in the guide hole 6 as the motor rotor 5 moves axially, thus providing a guiding function.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A torque motor mounting structure, comprising a bushing (1), a motor stator (16) coaxially fixed within the bushing (1), and a rotating shaft (3) coaxially rotatably mounted within the bushing (1) via a bearing I (2), characterized in that it further comprises... include: The screw (9) is mounted on the head end of the rotating shaft (3) via a detachable mechanism I, and the screw (9) and the rotating shaft (3) are coaxially arranged. Connecting plate (14), which is horizontally mounted to the head end of motor rotor (5) via detachable mechanism II; and The threaded sleeve (10) is rotatably mounted on the connecting plate (14) via a rotating connection mechanism, and the head end of the screw (9) is screwed into the threaded sleeve (10).

2. The torque motor shaft mounting structure according to claim 1, characterized in that: The detachable mechanism I includes bolt II (17), which passes through the tail end of the screw (9) and is screwed and fixed to the head end of the rotating shaft (3).

3. The torque motor shaft mounting structure according to claim 1, characterized in that: The detachable mechanism II includes bolt I (15), which passes through the connecting plate (14) and then screws onto the motor rotor (5).

4. The torque motor shaft mounting structure according to claim 1, characterized in that: The rotating connection mechanism includes a bearing II (12) embedded in a connecting plate (14), a threaded sleeve (10) inserted into the inner hole of the bearing II (12), a pressure plate (13) fixed to the connecting plate (14) by a bolt III (18), the pressure plate (13) pressing against the outer ring of the bearing II (12), a locking nut (11) screwed onto the threaded end of the outer end of the threaded sleeve (10), and the locking nut (11) pressing against the inner ring of the bearing II (12).

5. The torque motor shaft mounting structure according to claim 1, characterized in that: It also includes a guide mechanism installed on the motor rotor (5), which guides the motor rotor (5) axially when it moves along the axial direction.

6. The torque motor shaft mounting structure according to claim 5, characterized in that: The guiding mechanism includes a screw hole (4) on the rotating shaft (3) and a guide hole (6) on the motor rotor (5). The axis of the guide hole (6) is parallel to the axis of the motor rotor (5). The guide hole (6) and the screw hole (4) are coaxially arranged. The head end of the stud (7) is coaxially fixed with a guide rod (8). The tail end of the stud (7) is screwed into the screw hole (4). The guide rod (8) is slidably installed in the guide hole (6).

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