Fault diagnosis test pen of alternating current permanent magnet synchronous motor

Abstract

The utility model relates to the technical field of motor fault diagnosis, and discloses a fault diagnosis test pen of an alternating current permanent magnet synchronous motor, which comprises a shell, a detection head is arranged at one end of the shell, a display screen is further arranged on the shell, a rotating mechanism is arranged at the other end of the shell, and the rotating mechanism comprises a side plate, a fixing rod, an outer grip and a rotating unit. The two side plates are both fixed to the shell, the two ends of the fixing rod are both fixed to the side plates, one end of the outer grip is rotationally arranged on the fixing rod, and the telescopic mechanism comprises an inner grip, a movable groove and a telescopic unit; the detection pen can be folded and stored under the action of the rotating mechanism, so that the detection pen is more convenient to carry. And the length of the detection pen can be changed in cooperation with the telescopic mechanism, so that the heat of parts with small gaps in the motor can be detected, and faults can be accurately judged.

Description

Technical Field

[0001] The utility model relates to the technical field of motor fault diagnosis, in particular to a fault diagnosis test pen for an AC permanent magnet synchronous motor. Background Art

[0002] AC permanent magnet synchronous motor is a special type of motor, which is mainly composed of rotor, stator and permanent magnet. Compared with inductive motor, AC permanent magnet synchronous motor has advantages such as no excitation loss and simple control, so it is widely used in servo drive industry with high precision and high performance requirements.

[0003] Fault diagnosis usually involves monitoring and analyzing the motor's operating status to identify possible faults or abnormal conditions. This includes observing the motor's heat, noise and other abnormal conditions, checking wire connections, bearing conditions, and the operation of the motor controller and power supply.

[0004] However, the prior art has the following defects:

[0005] When diagnosing thermal faults in AC permanent magnet synchronous motors, people usually use their hands to touch and judge, but this method is inaccurate and there is a risk of burns. If a traditional thermal detection pen is used for detection, some parts inside the motor are small (such as some bearings) and the detection pen is not long enough to reach in, and then it is impossible to accurately determine the source of the thermal fault. Utility Model Content

[0006] In order to solve the technical problem of inaccuracy and inconvenience in judging the source of thermal faults, the utility model provides a fault diagnosis test pen for an AC permanent magnet synchronous motor.

[0007] The utility model adopts the following technical scheme to realize: a fault diagnosis test pen for AC permanent magnet synchronous motor.

[0008] It comprises a shell, one end of which is provided with a detection head, and the shell is also provided with a display screen;

[0009] A rotating mechanism, the rotating mechanism is arranged at the other end of the shell, and the rotating mechanism includes a side plate, a fixing rod, an outer handle and a rotating unit, the two side plates are fixed to the shell, and both ends of the fixing rod are fixed to the side plates, and one end of the outer handle is rotatably arranged on the fixing rod;

[0010] The telescopic mechanism comprises an inner handle, a movable groove and a telescopic unit. The movable groove is arranged at the other end of the outer handle, and the inner handle is arranged in the movable groove through the telescopic unit.

[0011] A circular plate is provided at one end of the inner handle, and an arc groove is provided on the outside of the circular plate, so that when the inner handle is pulled, the fingers contact the arc groove to increase the friction force and make it more stable.

[0012] Through the above technical solution, the heat value can be conveniently observed through the set display screen. Under the action of the rotating mechanism, the shell can be folded for more convenient storage. Under the action of the telescopic mechanism, the detection pen can be suitable for detecting parts with small gaps inside the motor, further improving the practicality of the device during use.

[0013] As a further improvement of the above scheme, the rotating unit includes semicircular groove one, semicircular groove two, a semicircular block, a storage groove and a groove. The two semicircular grooves two are both opened on the outer handle, and the two semicircular grooves one are also opened on the outer handle. The semicircular block is fixed at one end of the side panel close to the outer handle, and the semicircular block can be squeezed into semicircular groove one or semicircular groove two.

[0014] According to the above technical solution, when the outer handle is rotated, the semicircular groove 1 and the semicircular groove 2 can also be driven to move, so that the semicircular block can be squeezed into the semicircular groove 1 or the semicircular groove 2 to limit the position of the outer handle, thereby ensuring that the outer shell and the outer handle can be in a straight line.

[0015] As a further improvement of the above solution, the storage slot is provided at an end of the housing away from the display screen and is located between the two side panels, and the groove is provided at one end of the storage slot.

[0016] According to the above technical solution, a storage groove is provided on one side of the housing so that the outer handle can be used for storage, which is convenient to carry and saves space.

[0017] As a further improvement of the above scheme, the telescopic unit includes a spring slot, a spring, a block, a sliding unit and an adsorption unit, and a plurality of the spring slots are evenly spaced in the movable slot, and one end of the spring is welded in the spring slot, and the other end of the spring is welded to one end of the block.

[0018] Through the above technical solution, the spring can drive the card block to move relatively stably, so that it can be stuck in the slot. It is ensured that the inner handle can be stably located outside the outer handle. In addition, the two sides of one end of the card block are designed with inclined surfaces, so that it can be easily separated from the slot when pressure is applied to the inner handle.

[0019] As a further improvement of the above solution, the sliding unit includes a slider and a slide rail, the two sliders are fixed to the block, and the two slide rails are opened in the spring groove, and the slider slides in the slide rail.

[0020] Through the above technical solution, when the card block is squeezed and moved by the inner handle, the slider slides in the slide rail. It can be ensured to a large extent that the card block can only move vertically. It is also relatively smooth when moving, reducing friction and being relatively stable.

[0021] As a further improvement of the above scheme, the adsorption unit includes a magnet 1 and a slot, wherein the magnet 1 is fixed at the other end of the card block, a plurality of slots are opened on the inner handle, and a magnet 2 is provided inside the slot, and the magnet 1 can be inserted into the slot and adsorbed with the magnet 2.

[0022] Through the above technical solution, by clamping the block in the slot, the stability between the outer handle and the inner handle can be enhanced. The magnet 1 and the magnet 2 in the slot are adsorbed to enhance the stability of the inner handle outside the outer handle, so that it is not easy to shrink when contacting the parts in the gap.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The utility model can fold and store the detection pen under the action of the rotating mechanism, making it more convenient to carry. The length of the detection pen can be changed by cooperating with the telescopic mechanism, so as to detect the heat of some parts with small gaps inside the motor, so as to accurately judge the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure of a retracted fault diagnosis test pen for an AC permanent magnet synchronous motor provided by Example 1 of the utility model;

[0026] Figure 2 It is a schematic diagram of the front cross-sectional structure of a fault diagnosis test pen for an AC permanent magnet synchronous motor;

[0027] Figure 3 It is a schematic diagram of a stretched part of the three-dimensional structure of a fault diagnosis test pen for an AC permanent magnet synchronous motor;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the side plate and semicircular block of a fault diagnosis test pen for an AC permanent magnet synchronous motor;

[0029] Figure 5 A fault diagnosis test pen for AC permanent magnet synchronous motor Figure 2 The structural diagram at A in the middle;

[0030] Figure 6 A fault diagnosis test pen for AC permanent magnet synchronous motor Figure 3 Schematic diagram of the structure at B in the figure.

[0031] Description of main symbols:

[0032] 1. Housing; 2. Display screen; 3. Detection head; 4. Magnetic magnet; 5. Side panel; 6. Fixed rod; 7. Outer handle; 8. Inner handle; 9. Round plate; 10. Movable slot; 11. Spring slot; 12. Spring; 13. Block; 14. Magnet 1; 15. Slot; 16. Slider; 17. Slide rail; 18. Arc slot; 19. Semicircular slot 1; 20. Semicircular slot 2; 21. Semicircular block; 22. Storage slot; 23. Groove. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] Embodiment 1:

[0035] Please combine Figure 1-6 The present embodiment is a fault diagnosis test pen for an AC permanent magnet synchronous motor, comprising a housing 1, a detection head 3 is provided at one end of the housing 1, and a magnet 4 is provided at one end of the detection head 3 so that the detection head 3 can be naturally adsorbed when it is close to the motor parts, and a display screen 2 is also provided on the housing 1;

[0036] The rotating mechanism is arranged at the other end of the housing 1, and the rotating mechanism includes a side plate 5, a fixing rod 6, an outer handle 7 and a rotating unit. The two side plates 5 are fixed to the housing 1, and both ends of the fixing rod 6 are fixed to the side plates 5, and one end of the outer handle 7 is rotatably arranged on the fixing rod 6;

[0037] The telescopic mechanism includes an inner handle 8, a movable groove 10 and a telescopic unit. The movable groove 10 is opened at the other end of the outer handle 7, and the inner handle 8 is arranged in the movable groove 10 through the telescopic unit.

[0038] The rotating unit includes a semicircular groove 19, a semicircular groove 20, a semicircular block 21, a storage groove 22 and a groove 23. The two semicircular grooves 20 are both opened on the outer handle 7, and the two semicircular grooves 19 are also opened on the outer handle 7. The semicircular block 21 is fixed to one end of the side plate 5 close to the outer handle 7, and the semicircular block 21 can be squeezed into the semicircular groove 19 or the semicircular groove 20.

[0039] The storage slot 22 is formed at one end of the housing 1 away from the display screen 2 and between the two side panels 5 , and the notch 23 is formed at one end of the storage slot 22 .

[0040] The implementation principle of a fault diagnosis test pen for an AC permanent magnet synchronous motor in the present application is as follows: when performing heat detection on the motor, first detect the heat of the motor housing, use a finger to enter the groove 23, abut against the circular plate 9, and then move the circular plate 9 out of the storage groove 22, driving one end of the outer handle 7 to move out of the storage groove 22. At this time, hold the outer handle 7 and rotate it with the fixed rod 6 as the center. During this process, the semicircular groove 19 also rotates and gradually moves away from the semicircular block 21, so that the semicircular block 21 is slightly deformed and contacts the outer handle 7. When the outer handle 7 rotates, it will also drive the semicircular groove 20 to move. When the semicircular groove 20 moves into the semicircular block 21, the semicircular block 21 will fit with the semicircular groove 20, and the semicircular block 21 cannot be deformed. Then the outer handle 7 and the housing 1 are in a straight line. While holding the outer handle 7, one end of the detection head 3 is attached to the motor casing, and under the magnetic force of the magnet 4, the detection head 3 can be more stably attached to the motor casing. After attaching for a period of time, the detection head 3 detects the temperature of the motor casing and transmits it to the information exchange unit inside the casing 1, and then the information exchange unit transmits it to the display module on the display screen 2. The motor casing problem detected by the detection head 3 is displayed on the display screen 2, so that the reading and judgment can be accurately performed at work.

[0041] When it is necessary to perform temperature detection on some parts inside the motor, after the motor casing is disassembled, the same method is used to make the detection head 3 contact the parts to be detected, and the value can be read from the display screen 2 to judge that when the internal parts are too far away and the gap is too small, and the detection head 3 cannot contact, the fingers hold the arc groove 18, and the circular plate 9 is gripped to pull the inner handle 8 out of the movable groove 10. During the movement of the inner handle 8, the magnet 14 and the slot 15 will be separated first, so that the block 13 will gradually move away from the slot 15 and contact the inner handle 8. During this process, the spring 12 will be compressed, and the slider 16 will slide on the slide rail 17 in the direction of the spring 12, and then the block 13 will move into the spring groove 11. Along with the movement of the inner handle 8, when the magnet 14 moves into the adjacent slot 15, it will be stuck and the magnet 14 and the magnet 2 in the slot 15 will be adsorbed, so as to reciprocate the position of the inner handle 8 inside the movable slot 10. The distance that the inner handle 8 can be held when moved away from the outer handle 7 becomes longer, so that the detection head 3 can be moved onto the part for detection.

[0042] Embodiment 2:

[0043] Combination Figure 1-6 Based on Example 1, this embodiment is further improved in that: the telescopic unit includes a spring slot 11, a spring 12, a block 13, a sliding unit and an adsorption unit, and multiple spring slots 11 are evenly spaced in the movable slot 10, and one end of the spring 12 is welded in the spring slot 11, and the other end of the spring 12 is welded to one end of the block 13.

[0044] The sliding unit includes a slider 16 and a slide rail 17 . The two sliders 16 are fixed to the block 13 , and the two slide rails 17 are disposed in the spring groove 11 . The sliders 16 slide in the slide rails 17 .

[0045] The adsorption unit includes a magnet 14 and a slot 15. The magnet 14 is fixed to the other end of the block 13. A plurality of slots 15 are provided on the inner handle 8. A magnet 2 is provided inside the slot 15. The magnet 14 can be inserted into the slot 15 and adsorbed with the magnet 2.

[0046] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fault diagnosis test pen for AC permanent magnet synchronous motor, characterized in that: include: A housing, one end of which is provided with a detection head, and the housing is also provided with a display screen; A rotating mechanism, the rotating mechanism is arranged at the other end of the shell, and the rotating mechanism includes a side plate, a fixing rod, an outer handle and a rotating unit, the two side plates are fixed to the shell, and both ends of the fixing rod are fixed to the side plates, and one end of the outer handle is rotatably arranged on the fixing rod; The telescopic mechanism comprises an inner handle, a movable groove and a telescopic unit. The movable groove is arranged at the other end of the outer handle, and the inner handle is arranged in the movable groove through the telescopic unit.

2. The fault diagnosis test pen for an AC permanent magnet synchronous motor as claimed in claim 1, characterized in that: The rotating unit includes a semicircular groove one, a semicircular groove two, a semicircular block, a storage groove and a groove. The two semicircular grooves two are both opened on the outer handle, and the two semicircular grooves one are also opened on the outer handle. The semicircular block is fixed at one end of the side panel close to the outer handle, and the semicircular block can be squeezed into the semicircular groove one or the semicircular groove two.

3. The fault diagnosis test pen for an AC permanent magnet synchronous motor as claimed in claim 2, characterized in that: The storage slot is arranged at one end of the housing away from the display screen and is located between the two side panels, and the groove is arranged at one end of the storage slot.

4. The fault diagnosis test pen for an AC permanent magnet synchronous motor as claimed in claim 2, characterized in that: The telescopic unit includes a spring slot, a spring, a clamping block, a sliding unit and an adsorption unit. A plurality of spring slots are evenly spaced in the movable slot, one end of the spring is welded in the spring slot, and the other end of the spring is welded to one end of the clamping block.

5. The fault diagnosis test pen for an AC permanent magnet synchronous motor as claimed in claim 4, characterized in that: The sliding unit comprises a sliding block and a sliding rail. The two sliding blocks are fixed to the clamping block, and the two sliding rails are arranged in the spring grooves. The sliding blocks slide in the sliding rails.

6. The fault diagnosis test pen for an AC permanent magnet synchronous motor as claimed in claim 4, characterized in that: The adsorption unit includes a magnet 1 and a slot. The magnet 1 is fixed to the other end of the card block. A plurality of slots are provided on the inner handle. A magnet 2 is provided inside the slot. The magnet 1 can be inserted into the slot and adsorbed with the magnet 2.

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