A motor quick clamping test device

Abstract

The utility model discloses a motor quick clamping test device, comprising an external motor and a connecting guide rail, a fixed frame rotatably connected to a test shaft and a stator frame slidably connected to the connecting guide rail are fixedly connected to the connecting guide rail; a stator slot whose size matches the stator is opened on the stator frame; the output shaft of the external motor and a three-jaw chuck are respectively fixedly connected to the two ends of the test shaft, and the three-jaw chuck is detachably connected to a conversion shaft; when in use, the rotor is fixedly connected to one end of the conversion shaft away from the three-jaw chuck, and the stator is fixedly connected to the stator slot; the test shaft, the three-jaw chuck, the stator slot and the conversion shaft are all coaxial. This solution is not only fast to assemble, but also can ensure the coaxiality of the rotor and the stator when assembling.

Description

Technical Field

[0001] The utility model relates to the field of motor bench performance testing devices, in particular to a motor quick clamping testing device. Background Art

[0002] The motor bench performance test device is a device used to conduct comprehensive performance evaluation and testing of motors, and can provide important data support and reference for the research and development, production and application of motors. The existing motor bench performance test device has the following shortcomings: when testing, it is necessary to connect the motor shaft of the test device with the conversion shaft, assemble the stator and rotor together and hoist them in the air, and when the stator and rotor are moved to the installation surface, tighten the rotor and the conversion shaft with bolts. Due to the large suction between the rotor and the stator, in order to ensure that the gap and alignment between the rotor and the stator meet the requirements, this operation is difficult to clamp and takes a long time. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a motor quick clamping test device, which solves the problem that the motor bench performance test device in the prior art is difficult to clamp.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] Provided is a motor quick clamping test device, which includes an external motor and a connecting rail, on which a fixing frame rotatably connected to a test shaft and a stator frame slidably connected to the connecting rail are fixedly connected; the stator frame is provided with a stator slot whose size matches that of the stator;

[0006] The output shaft of the external motor and the three-jaw chuck are fixedly connected to the two ends of the test shaft respectively, and the three-jaw chuck is detachably connected to the conversion shaft; when in use, the rotor is fixedly connected to the end of the conversion shaft away from the three-jaw chuck, and the stator is fixedly connected to the stator slot; the test shaft, three-jaw chuck, stator slot and conversion shaft are all coaxial.

[0007] The beneficial effects of the utility model are as follows: the utility model can connect and fix the rotor of the motor to be tested with the conversion shaft offline without affecting the test cycle. When installing, it is only necessary to insert the other end of the conversion shaft into the three-jaw chuck, which is not only fast to assemble, but also can ensure the centring degree of the rotor, the coaxiality of the rotor and the test shaft, and further ensure the coaxiality of the rotor and the stator when assembling.

[0008] This solution adopts the method of installing the stator and rotor of the motor to be tested separately, fixing the stator to the stator frame and the rotor to the fixing frame, and then pushing the stator frame to assemble the stator and the rotor. The assembly process does not have the interference of suction between the rotor and the stator, which can not only better ensure the coaxiality of the stator and the rotor, but also save assembly time.

[0009] Furthermore, a mounting platform is fixedly connected to the fixed frame, and a mounting cavity is provided inside the mounting platform for the test shaft to extend into, and bearings and bearing glands are provided at both ends of the mounting cavity, and the test shaft is rotatably connected to the mounting cavity through the bearings. The mounting platform can increase the support area of ​​the test shaft to ensure the stability of the test shaft during rotation, and the dual bearing positioning can further ensure the stability of the test shaft and thus ensure the coaxiality with the stator slot.

[0010] Furthermore, the motor quick clamping test device also includes an annular clamping ring sleeved on the outer surface of the test shaft; a clamping ring groove matching the clamping ring is opened in the mounting cavity of the mounting platform, and the clamping ring is placed in the clamping ring groove. The clamping ring is fixedly connected to the test shaft, and the clamping ring groove can limit the axial movement of the clamping ring, thereby limiting the movement of the test shaft.

[0011] Furthermore, a guide sleeve is fixedly connected to the fixed frame, and a guide shaft is fixedly connected to the stator frame; the guide shaft includes an insertion portion and a stop portion, and the guide sleeve is provided with a guide cavity matching the size of the insertion portion; the guide sleeve is coaxial with the guide shaft; the shaft diameter of the stop portion is larger than the diameter of the guide cavity. The guide shaft and the guide sleeve are used for guiding, which can further ensure the coaxiality when the rotor and the stator are assembled. The stop portion can prevent the stator from excessive displacement.

[0012] Furthermore, the stator frame is slidably connected to the connecting rail through a slider, and the slider is connected to the first power mechanism; the first power mechanism includes a cylinder and a piston rod, and the end of the piston rod is fixedly connected to the slider. The cylinder drives the piston rod to extend and retract, thereby driving the slider to move linearly along the connecting rail, and then driving the stator frame to move linearly along the connecting rail.

[0013] Furthermore, the rear end of the stator frame is fixedly connected to an external fixing block with a hollow interior, and a second power mechanism and a stop pin connected to the second power mechanism are arranged inside the external fixing block; the second power mechanism has the same structure as the first power mechanism, and the stop pin is fixedly connected to the piston rod of the second power mechanism. An opening is provided at the lower end of the external fixing block for the stop pin to extend out. The stop pin can prevent the stator frame from retreating and prevent the stator and rotor from separating during testing.

[0014] Furthermore, a triangular support plate is fixedly connected to the outer surface of the mounting platform, thereby increasing the strength and stability of the mounting platform.

[0015] Furthermore, one side of the stator slot is a fixed panel, and a through hole larger than the outer diameter of the rotor is opened at the center of the fixed panel; the stator is fixedly connected to the fixed panel through a fixing piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the motor quick clamping test device when cutting the test shaft section;

[0017] Figure 2This is the front view of the motor quick clamping test device when cutting the guide sleeve section;

[0018] Figure 3 It is a side cross-sectional view of the motor quick clamping test device.

[0019] Among them, 1. fixed frame; 2. support plate; 3. mounting table; 4. test shaft; 5. bearing cover; 6. bearing; 7. retaining ring; 8. three-jaw chuck; 9. conversion shaft; 10. rotor; 11. guide sleeve; 12. guide shaft; 13. stator; 14. stator frame; 15. cylinder; 16. external fixing block; 17. retaining pin; 18. slider; 19. connecting guide rail; 20. piston rod; 21. fixing piece; 22. extension part; 23. stop part; 24. fixed panel. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0021] like Figure 1 As shown, the motor quick clamping test device of the present scheme includes an external motor (not shown in the accompanying drawings) and a connecting guide rail 19, and a fixing frame 1 that is rotatably connected to the test shaft 4 and a stator frame 14 that is slidably connected to the connecting guide rail 19 are fixedly connected to the connecting guide rail 19, and the fixing frame 1 is used to fix the rotor 10, and the stator frame 14 is used to fix the stator. The stator frame 14 is provided with a stator slot whose size matches the stator 13. The stator 13 is fixedly connected to the stator slot. It should be clear that the external motor is a motor assembly owned by the test device, and the stator 13 and the rotor 10 are parts removed from the motor to be tested. The function of the external motor is to drive the rotor 10 to rotate by driving the test shaft 4 to rotate.

[0022] Specifically, one side of the stator slot is a fixed panel 24, and a through hole larger than the outer diameter of the rotor 10 is opened in the center of the fixed panel 24, so that the rotor can enter the interior of the stator 13 through the through hole; the stator 13 is fixedly connected to the fixed panel 24 through a fixing member 21. This solution adopts a split installation method of the stator 13 and the rotor 10, fixing the stator 13 to the stator frame 14 and the rotor 10 to the fixing frame 1, so that the stator 13 is far away from the rotor 10, avoiding the interference of the suction force between the two. After the stator 13 and the rotor 10 are assembled separately, the stator frame 14 is pushed to assemble the stator 13 and the rotor 10. The fixing member 21 can be a bolt and nut, a cylinder for locking, or other locking devices.

[0023] The fixing frame 1 is rotatably connected to the test shaft 4, one end of the test shaft 4 is fixedly connected to the output shaft of the external motor, and the other end is fixedly connected to the three-jaw chuck 8, and the three-jaw chuck 8 is detachably connected to the conversion shaft 9. When in use, the rotor 10 is fixedly connected to the end of the conversion shaft 9 away from the three-jaw chuck 8.

[0024] The rotor 10 is connected and fixed to the conversion shaft 9 offline, which does not affect the test cycle. When assembling the rotor 10, it is only necessary to insert the other end of the conversion shaft 9 into the three-jaw chuck 8, which is very fast and convenient. The three-jaw chuck 8 is a mechanical device for clamping workpieces. It is a mature existing technology. Its advantages are that it can quickly assemble and clamp shaft parts, provide stable clamping force, and is easier to align when clamping.

[0025] The test shaft 4 , the three-jaw chuck 8 , the stator slot and the conversion shaft 9 are all coaxial, so the rotor 10 can ensure coaxiality with the test shaft 4 after assembly and centering, thereby ensuring the coaxiality of the rotor 10 and the stator 13 when assembled.

[0026] Preferably, a mounting platform 3 is fixedly connected to the fixed frame 1, and a mounting cavity for the test shaft 4 to extend into is opened inside the mounting platform 3. Bearings 6 and bearing covers 5 are provided at both ends of the mounting cavity, and the test shaft 4 is rotatably connected to the mounting cavity through the bearings 6. By providing the mounting platform 3, the support area of ​​the test shaft 4 can be increased to ensure the stability of the test shaft 4 during rotation. The positioning of the double bearings 6 can further ensure the stability of the test shaft 4 and thus ensure the coaxiality with the stator slot. The stability, flexibility and impact resistance will be better during rotation. A triangular support plate 2 is fixedly connected to the outer surface of the mounting platform 3 to increase the strength and stability of the mounting platform 3.

[0027] The outer surface of the test shaft 4 is sleeved with an annular collar 7; a collar groove matching the collar 7 is provided in the mounting cavity of the mounting platform 3, and the collar 7 is placed in the collar groove. The collar 7 is fixedly connected to the test shaft 4, and the collar groove can limit the axial movement of the collar 7, thereby limiting the movement of the test shaft 4.

[0028] like Figure 2 As shown, a guide sleeve 11 is fixedly connected to the fixing frame 1, and a guide shaft 12 is fixedly connected to the stator frame 14; the guide shaft 12 includes an insertion portion 22 and a stop portion 23, and the guide sleeve 11 is provided with a guide cavity that matches the size of the insertion portion 22; the guide sleeve 11 is coaxial with the guide shaft 12; the shaft diameter of the stop portion 23 is larger than the diameter of the guide cavity. The guide shaft 12 and the guide sleeve 11 are used for guiding, which can further ensure the coaxiality of the rotor 10 and the stator 13 when they are assembled. The stop portion 23 can prevent the stator 13 from excessive displacement. The positional relationship between the guide sleeve 11 and the mounting table 3 can be referred to Figure 3 .

[0029] The stator frame 14 is slidably connected to the connecting guide rail 19 through the slider 18, and the slider 18 is connected to the first power mechanism; the first power mechanism includes a cylinder 15 and a piston rod 20 connected to each other, and the end of the piston rod 20 is fixedly connected to the slider 18. The cylinder 15 drives the piston rod 20 to extend and retract, thereby driving the slider 18 to perform linear motion along the connecting guide rail 19, and then driving the stator frame 14 to perform linear motion along the connecting guide rail 19.

[0030] The rear end of the stator frame 14 is fixedly connected to an external fixing block 16 with a hollow interior. The interior of the external fixing block 16 is provided with a second power mechanism and a stop pin 17 connected to the second power mechanism. The second power mechanism has the same structure as the first power mechanism, but has different sizes. The stop pin 17 is fixedly connected to the piston rod 20 of the second power mechanism. An opening is provided at the lower end of the external fixing block 16 for the stop pin 17 to extend. The cylinder 15 drives the piston rod 20 to extend, so that the stop pin 17 extends out of the external fixing block 16 and can be pressed against the supporting plane of the connecting guide rail 19 or other contactable planes, thereby generating static friction to stop the stator frame 14 from retreating, which can prevent the stator 13 and the rotor 10 from separating during testing.

[0031] The assembly process of this solution is as follows: 1. The rotor 10 and the conversion shaft 9 are connected offline with bolts, which does not affect the test rhythm; 2. The stator 13 is fixed on the stator frame 14; 3. The conversion shaft 9 connected to the rotor 10 is inserted into the three-jaw chuck 8 and clamped and centered; 4. Start the equipment, and let the cylinder 15 push the stator frame 14 forward through the piston rod 20. When the stator 13 approaches the rotor 10, the guide shaft 12 extends into the guide sleeve 11 to ensure coaxiality until the left end face of the stator 13 is flush with the left end face of the rotor 10; 5. Let the cylinder 15 push the stop pin 17 through the piston rod 20 to press the support plane of the connecting guide rail 19 to fix it, so as to prevent the stator 13 and the rotor 10 from separating during the test. Compared with the traditional test device, the whole process changes multiple manual operations to automatic assembly, saves assembly time, and improves the test stability and accuracy.

[0032] In summary, this solution not only has fast assembly and does not affect the test cycle, but also can ensure the coaxiality of the rotor and stator during assembly.

Claims

1. A motor quick clamping test device, characterized in that: It comprises an external motor and a connecting rail (19), wherein a fixing frame (1) rotatably connected to a test shaft (4) and a stator frame (14) slidably connected to the connecting rail (19) are fixedly connected to the connecting rail (19); and a stator slot having a size matching that of a stator (13) is provided on the stator frame (14); The output shaft of the external motor and the three-jaw chuck (8) are respectively fixedly connected to the two ends of the test shaft (4); the three-jaw chuck (8) is detachably connected to the conversion shaft (9); when in use, the rotor (10) is fixedly connected to the end of the conversion shaft (9) away from the three-jaw chuck (8), and the stator (13) is fixedly connected to the stator slot; the three-jaw chuck (8), the stator slot and the conversion shaft (9) are all coaxial.

2. The motor quick clamping test device according to claim 1 is characterized in that: The fixing frame (1) is fixedly connected to a mounting platform (3), the mounting platform (3) is provided with a mounting cavity for the test shaft (4) to extend into, bearings (6) and bearing pressure covers (5) are arranged at both ends of the mounting cavity, and the test shaft (4) is rotatably connected to the mounting cavity via the bearings (6).

3. The motor quick clamping test device according to claim 2 is characterized in that: It also includes an annular clamping ring (7) sleeved on the outer surface of the test shaft (4); a clamping ring groove matching the clamping ring (7) is opened in the mounting cavity of the mounting platform (3), and the clamping ring (7) is placed in the clamping ring groove.

4. The motor quick clamping test device according to claim 1 is characterized in that: A guide sleeve (11) is fixedly connected to the fixed frame (1), and a guide shaft (12) is fixedly connected to the stator frame (14); the guide shaft (12) comprises an insertion portion (22) and a stop portion (23); the guide sleeve (11) is provided with a guide cavity having a size matching that of the insertion portion (22); the guide sleeve (11) is coaxial with the guide shaft (12); and the axial diameter of the stop portion (23) is larger than the diameter of the guide cavity.

5. The motor quick clamping test device according to claim 1 is characterized in that: The stator frame (14) is slidably connected to the connecting guide rail (19) via a slider (18), and the slider (18) is connected to a first power mechanism; the first power mechanism comprises a cylinder (15) and a piston rod (20) which are connected to each other, and the end of the piston rod (20) is fixedly connected to the slider (18).

6. The motor quick clamping test device according to claim 5, characterized in that: The rear end of the stator frame (14) is fixedly connected to an external fixing block (16) with a hollow interior, and a second power mechanism and a stop pin (17) connected to the second power mechanism are arranged inside the external fixing block (16); the second power mechanism has the same structure as the first power mechanism, and the stop pin (17) is fixedly connected to a piston rod (20) of the second power mechanism; and an opening is provided at the lower end of the external fixing block (16) for the stop pin (17) to extend out.

7. The motor quick clamping test device according to claim 2 is characterized in that: A triangular support plate (2) is fixedly connected to the outer surface of the mounting platform (3).

8. The motor quick clamping and testing device according to claim 1 is characterized in that: One side surface of the stator slot is a fixed panel (24), and a through hole larger than the outer diameter of the rotor (10) is opened at the center of the fixed panel (24); the stator (13) is fixedly connected to the fixed panel (24) via a fixing member (21).

Images