Torque quality inspection system of five-phase permanent magnet fault-tolerant motor

Abstract

The invention relates to the technical field of five-phase permanent magnet fault-tolerant motors, in particular to a torque quality inspection system of a five-phase permanent magnet fault-tolerant motor, which comprises a detection table, two side plates and a positioning plate, the two side plates are fixedly mounted below the detection table, and a vertical hoisting type torque detection structure is arranged above the detection table. And a motor output shaft switching structure is arranged in the middle of the upper part of the detection table. According to the torque quality inspection system of the five-phase permanent magnet fault-tolerant motor, the balancing weights are solid large-size weights made of metal iron, the balancing weights with different weights can be replaced according to the torque requirement of the motor, the limiting block can be screwed at the top end of the sliding rod through threads, the limiting block can be detached, and the cost is reduced. According to the torque of the output shaft of the motor, the balancing weight can be pulled to rise at the highest point of the scale mark to measure the torque, the balancing weight is replaced until the torque force of the motor is not pulled, the torque of the motor can be obtained according to the weight of the balancing weight, a transverse swing arm is replaced with the vertical lifting balancing weight, and the motion trail is controlled within a safe range.

Description

Technical Field

[0001] This invention relates to the field of five-phase permanent magnet fault-tolerant motor technology, specifically to a torque quality inspection system for a five-phase permanent magnet fault-tolerant motor. Background Technology

[0002] The production of five-phase permanent magnet fault-tolerant motors requires sampling to test the motor torque. Existing motor torque testing equipment uses the deformation of elastic elements under the motor driving force to express the output torque of the motor. Its structure is precise and complex, and it requires high usage cost and operating skills. It is suitable for scenarios such as motor research and development that require precise measurement of motor torque.

[0003] The existing torque inspection system for five-phase permanent magnet fault-tolerant motors uses a rotating seat, bearings, and sleeves to support the motor output shaft, which drives the swing arm and counterweight upwards via a collet. By observing whether the swing angle of the swing arm reaches the design angle, the system can quickly determine whether the motor torque meets the standard. However, the existing torque inspection system for five-phase permanent magnet fault-tolerant motors observes the torque value by swinging the counterweight with the swing arm. However, the swing arm has a relatively large range of motion and lacks additional protective structures. If the motor output shaft malfunctions or the counterweight configuration exceeds the motor's load limit, the counterweight will lose its supporting force and fall rapidly, causing danger.

[0004] Meanwhile, in the existing torque quality inspection system for five-phase permanent magnet fault-tolerant motors, the motor is directly mounted on top of the quality inspection platform during torque testing. The motor output shaft is also directly connected to the swing arm used to measure torque. There is no additional coupling structure between the motor output shaft and the swing arm connected to the counterweight. Therefore, when the weight of the counterweight is too large, the motor output shaft cannot drive it to swing laterally. In fact, if the force exceeds the load limit of the motor output shaft, the motor output shaft will break, causing damage to the test piece. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing torque inspection systems for five-phase permanent magnet fault-tolerant motors have the following issues: if the motor output shaft malfunctions or the counterweight configuration exceeds the motor's load limit, the counterweight will lose its supporting force and fall rapidly, causing danger; the motor output shaft will be unable to drive it to swing laterally; or the force may even exceed the motor output shaft's load limit, causing the motor output shaft to break and damaging the test piece. Therefore, this invention proposes a torque inspection system for five-phase permanent magnet fault-tolerant motors.

[0006] To achieve the above objectives, the present invention provides the following technical solution: Design a torque quality inspection system for a five-phase permanent magnet fault-tolerant motor, including a testing platform, side plates, and positioning plates. The positioning plates are fixedly installed on one side of the top of the testing platform, and the two side plates are fixedly installed below the testing platform. A vertical lifting torque detection structure is provided above the testing platform, and a counterweight lifting structure is provided on the inner side of the side plates. A motor protection structure is provided above the testing platform, and a motor output shaft adapter structure is provided in the middle of the top of the testing platform.

[0007] Preferably, the vertical lifting torque detection structure includes a torque box and a guide frame. The torque box is fixedly installed on the top of the detection platform, and a winding roller is rotatably installed on the inner side of the torque box. The guide frame is fixedly installed on one side of the top of the detection platform. The guide frame is rotatably connected to a pulley through a pin shaft. A traction rope is slidably connected to the outer side of the pulley, and a through hole is slidably provided on the outer side of the traction rope.

[0008] Preferably, the through hole is fixedly opened at the top of the testing platform, and the other end of the traction rope is rotatably connected to the outer wall of the winding roller.

[0009] Preferably, the counterweight lifting structure includes a base plate and a scale line. The base plate is fixedly connected to the lower end of the inner wall of the side plate. A sliding rod is fixedly installed above the base plate. A counterweight block is slidably connected to the outer wall of the sliding rod. A limit block is fixedly installed at the top of the sliding rod. The scale line is fixedly installed on the outer wall of the side plate.

[0010] This design features a base plate that horizontally supports the counterweight. A sliding rod guides the counterweight vertically upward. The counterweight is a solid, large-volume weight made of iron, and different weights can be used depending on the motor torque requirements. A limit block is screwed onto the top of the sliding rod and can be removed. The motor output shaft torque pulls the counterweight to the highest point of the scale for torque measurement. The counterweight is replaced until the motor torque can no longer pull it. The motor torque can then be determined from the weight of the counterweight. By using a vertically lifting counterweight instead of a horizontal swing arm, the movement trajectory is controlled within a safe range.

[0011] Preferably, the top of the counterweight is fixedly connected to the lower end of the traction rope, and one side of the outer wall of the counterweight is slidably disposed relative to the scale line.

[0012] Preferably, the motor output shaft adapter structure includes a fixed cylinder and a linkage shaft. The fixed cylinder is fixedly installed at the top center of the testing platform. A transmission sleeve is rotatably connected to the inner side of the fixed cylinder via a bearing. A connecting pipe is fixedly sleeved on the inner wall of the transmission sleeve. A linkage shaft is slidably connected to the inner side of the connecting pipe. Multiple mounting bolts are threadedly connected to the side wall of the transmission sleeve.

[0013] Preferably, the motor protection structure includes a cylinder and a motor body. The motor body is movably mounted on one side of the top of the testing platform. A connecting plate is fixedly installed on the outer side of the motor body. The connecting plate is threadedly connected to the top of the testing platform by bolts. A rotating shaft is fixedly installed at the front end of the output shaft of the motor body. A protective shell is movably sleeved on the outer side of the motor body. A cylinder is fixedly installed at the top of the protective shell.

[0014] Preferably, a crossbeam is fixedly installed at the top of the positioning plate, and the lower end of the crossbeam is fixedly connected to the top of the cylinder.

[0015] Preferably, the end of the rotating shaft is slidably connected to one end of the inner part of the connecting pipe.

[0016] Preferably, the other end of the linkage shaft is fixedly connected to the end of the winding roller.

[0017] The present invention proposes a torque quality inspection system for a five-phase permanent magnet fault-tolerant motor. The beneficial effects are as follows: the base plate horizontally supports the counterweight, the sliding rod guides the counterweight to rise vertically, the counterweight is a solid, large-volume weight made of iron, and different weights can be replaced according to the motor torque requirements. The limit block can be screwed onto the top of the sliding rod and can be disassembled. The counterweight is raised to the highest point of the scale line based on the motor output shaft torque, and the counterweight is replaced until the motor torque cannot be increased. The motor torque can then be determined based on the weight of the counterweight. By using a vertically lifting counterweight instead of a horizontal swing arm, the movement trajectory is controlled within a safe range.

[0018] The rotation of the transmission sleeve is restricted by the bearing inside the fixed cylinder, while the connecting pipe can rotate together inside the transmission sleeve. The rotating shaft at the end of the output shaft of the motor body to be tested is inserted into one end of the connecting pipe, and the linkage shaft that drives the winding roller to rotate is inserted into the other side of the connecting pipe. Finally, they are connected by multiple mounting bolts on both sides. In this way, the torque of the motor body can be transmitted through the connecting pipe. When the torque is too large and exceeds the limit of the motor, the connecting pipe will break and be damaged, which can protect the integrity of the motor output shaft. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A frontal sectional view; Figure 3 for Figure 1 A schematic diagram of the top sectional view; Figure 4 for Figure 2 Enlarged sectional view of section A in the middle; Figure 5 for Figure 2 Enlarged sectional view of section B in the middle; Figure 6 for Figure 2 Enlarged sectional view of section C in the middle; Figure 7 for Figure 2 Enlarged sectional view of section D in the middle; Figure 8 for Figure 3 Enlarged sectional view of section E in the middle.

[0020] In the diagram: 1. Testing platform, 2. Side plate, 3. Positioning plate, 4. Crossbeam, 5. Motor protection structure, 51. Cylinder, 52. Protective shell, 53. Connecting plate, 54. Motor body, 55. Rotating shaft, 6. Motor output shaft adapter structure, 61. Fixed cylinder, 62. Transmission sleeve, 63. Connecting pipe, 64. Mounting bolt, 65. Linkage shaft, 7. Vertical lifting torque detection structure, 71. Torque box, 72. Winding roller, 73. Guide frame, 74. Pulley, 75. Traction rope, 76. Through hole, 8. Counterweight lifting structure, 81. Base plate, 82. Counterweight block, 83. Sliding rod, 84. Limiting block, 85. Scale line. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: Example

[0022] Please see Figure 1-8 In this embodiment, a torque quality inspection system for a five-phase permanent magnet fault-tolerant motor includes a testing platform 1, side plates 2, and a positioning plate 3. The positioning plate 3 is fixedly installed on one side of the top of the testing platform 1, and the two side plates 2 are fixedly installed below the testing platform 1. The positioning plate 3 fixes the upper stainless steel beam 4 above the testing platform 1, while the testing platform 1 is supported by the side plates 2 on both sides. A vertical lifting torque detection structure 7 is provided above the testing platform 1, a counterweight lifting structure 8 is provided on the inner side of the side plates 2, a motor protection structure 5 is provided above the testing platform 1, and a motor output shaft adapter structure 6 is provided in the middle of the upper part of the testing platform 1.

[0023] The vertical lifting torque detection structure 7 includes a torque box 71 and a guide frame 73. The torque box 71 is fixedly installed on the top of the detection platform 1. A winding roller 72 is rotatably mounted on the inner side of the torque box 71. The guide frame 73 is fixedly installed on one side of the top of the detection platform 1. The inside of the guide frame 73 is rotatably connected to a pulley 74 via a pin. A traction rope 75 is slidably connected to the outer side of the pulley 74. The winding roller 72 is connected to the output shaft of the motor body 54 to be tested via a motor output shaft adapter structure 6. Therefore, when torque detection is required, the power supply is connected and the motor body 54 is started. The output shaft of the main body 54 drives the winding roller 72 to rotate inside the torque box 71. The rotating winding roller 72 gradually winds up the outer traction rope 75. The traction rope 75 pulls the lower counterweight 82 upward under the guidance of the fixed pulley 74. The torque of the motor is determined according to the limit position that the counterweight 82 can rise. The through hole 76 facilitates the retraction and connection of the traction rope 75. The traction rope 75 has a through hole 76 slidably provided on the outer side. The through hole 76 is fixedly opened at the top of the detection table 1. The other end of the traction rope 75 is rotatably connected to the outer wall of the winding roller 72.

[0024] The counterweight lifting structure 8 includes a base plate 81 and a scale line 85. The base plate 81 is fixedly connected to the lower end of the inner wall of the side plate 2. The base plate 81 horizontally supports the counterweight block 82. A slide rod 83 is fixedly installed above the base plate 81. The slide rod 83 can guide the counterweight block 82 to rise vertically. The counterweight block 82 is a solid, large-volume weight made of iron. Different weights of counterweight blocks 82 can be replaced according to the motor torque requirements. The counterweight block 82 is slidably connected to the outer wall of the slide rod 83. A limit block 84 is threadedly installed at the top of the slide rod 83. The limit block 84 can be screwed onto the top of the slide rod 83 and can be disassembled. The counterweight block 85 can be raised to the highest point of the scale line 85 according to the motor output shaft torque to measure the torque. The counterweight block 85 is replaced until the motor torque force can no longer pull it. The scale line 85 is fixedly installed on the outer wall of the side plate 2.

[0025] The top of the counterweight 82 is fixedly connected to the lower end of the traction rope 75, and one side of the outer wall of the counterweight 82 is slidably set relative to the scale line 85.

[0026] The motor output shaft adapter structure 6 includes a fixed cylinder 61 and a linkage shaft 65. The fixed cylinder 61 is fixedly installed at the top center of the test bench 1. The rotation of the transmission sleeve 62 is restricted by a bearing inside the fixed cylinder 61. The transmission sleeve 62 is rotatably connected to the inside of the fixed cylinder 61 via a bearing. A connecting pipe 63 is fixedly sleeved on the inner wall of the transmission sleeve 62. The connecting pipe 63 can rotate together with the transmission sleeve 62 inside. The linkage shaft 65 is slidably connected to one side of the inner wall of the connecting pipe 63. The rotating shaft 55 at the end of the output shaft of the motor body 54 to be tested is inserted into one end of the connecting pipe 63. The other side of the connecting pipe 63 is inserted into the linkage shaft 65 that drives the winding roller 72 to rotate. Finally, the connection is made by multiple mounting bolts 64 on both sides. In this way, the torque of the motor body 54 can be transmitted through the connecting pipe 63. When the torque is too large and exceeds the limit of the motor, the connecting pipe 63 will break and be damaged, which can protect the integrity of the motor output shaft. Multiple mounting bolts 64 are threadedly connected to the side wall of the transmission sleeve 62.

[0027] The motor protection structure 5 includes a cylinder 51 and a motor body 54. The motor body 54 is movably mounted on one side of the top of the test bench 1. The motor body 54 is a five-phase permanent magnet fault-tolerant motor with a torque to be tested. A connecting plate 53 is fixedly installed on the outside of the motor body 54. The motor body 54 is installed and fixed to the test bench 1 through the connecting plate 53 and the mounting holes on the top. The connecting plate 53 is connected to the threaded top of the test bench 1 by bolts. A rotating shaft 55 is fixedly installed at the front end of the output shaft of the motor body 54. During the torque test, the cylinder 51 will push the aluminum alloy mesh frame protective shell 52 downward to buckle on the outside of the motor body 54, which plays a role in preventing the motor from exploding. The protective shell 52 is movably sleeved on the outside of the motor body 54. The cylinder 51 is fixedly installed on the top of the protective shell 52.

[0028] A crossbeam 4 is fixedly installed on the top of the positioning plate 3, and the lower end of the crossbeam 4 is fixedly connected to the top of the cylinder 51.

[0029] The end of the rotating shaft 55 is slidably connected to one end of the inner part of the connecting pipe 63, and the other end of the linkage shaft 65 is fixedly connected to the end of the winding roller 72.

[0030] Working principle: The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor is used to sample and test the motor torque. Existing motor torque testing equipment uses the deformation of elastic elements under motor driving force to express the output torque of the motor. The motor body 54 is a five-phase permanent magnet fault-tolerant motor for which the torque to be tested is to be tested. A connecting plate 53 is fixedly installed on the outside of the motor body 54. The motor body 54 is installed and fixed to the test table 1 through the connecting plate 53 and the mounting hole on the top. A rotating shaft 55 is fixedly installed at the front end of the output shaft of the motor body 54. The rotating shaft 55 can output the torque to be tested. During the torque test, the cylinder 51 will push the aluminum alloy mesh frame protective shell 52 downward to be snapped onto the outside of the motor body 54, which plays the role of motor explosion protection. The rotation of the transmission sleeve 62 is restricted by the bearing inside the fixed sleeve 61, while the connecting pipe 63 can rotate together inside the transmission sleeve 62. The rotating shaft 55 at the end of the output shaft of the motor body 54 to be tested is inserted into one end of the connecting pipe 63, and the linkage shaft 65 that drives the winding roller 72 to rotate is inserted into the other side of the connecting pipe 63. Finally, they are connected by multiple mounting bolts 64 on both sides. In this way, the torque of the motor body 54 can be transmitted through the connecting pipe 63. When the torque is too large and exceeds the limit of the motor, the connecting pipe 63 will break and be damaged, which can be used to protect the integrity of the motor output shaft. The guide frame 73 is internally connected to the pulley 74 via a pin. The winding roller 72 is connected to the output shaft of the motor body 54 to be tested via the motor output shaft adapter structure 6. Therefore, when torque detection is required, the power supply is connected and the motor body 54 is started. The output shaft of the motor body 54 will drive the winding roller 72 to rotate inside the torque box 71. The rotating winding roller 72 will gradually wind up the outer traction rope 75. The traction rope 75 will pull the lower counterweight 82 to rise under the guidance of the fixed pulley 74. The torque of the motor is judged based on the limit position that the counterweight 82 can rise. The through hole 76 facilitates the retraction and connection of the traction rope 75. The base plate 81 horizontally supports the counterweight 82, and the slide bar 83 guides the counterweight 82 to rise vertically. The counterweight 82 is a solid, large-volume weight made of iron. Different weights of counterweight 82 can be replaced according to the motor torque requirements. The limit block 84 can be screwed onto the top of the slide bar 83. The limit block 84 can be disassembled. The counterweight 85 is raised to the highest point of the scale line 85 according to the motor output shaft torque to measure the torque. The counterweight 85 is replaced until the motor torque force can no longer pull it. The motor torque can be determined from the weight of the counterweight. The vertical lifting counterweight replaces the horizontal swing arm, keeping the movement trajectory within a safe range.

[0031] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art will understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A torque quality inspection system for a five-phase permanent magnet fault-tolerant motor, comprising a testing platform (1), side plates (2), and positioning plates (3), wherein the positioning plates (3) are fixedly installed on one side of the top of the testing platform (1), and the two side plates (2) are fixedly installed below the testing platform (1), characterized in that: The testing platform (1) is provided with a vertical lifting torque testing structure (7) above it, and a counterweight lifting structure (8) is provided on the inner side of the side plate (2). The testing platform (1) is provided with a motor protection structure (5) above it, and a motor output shaft adapter structure (6) is provided in the middle above the testing platform (1).

2. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 1, characterized in that: The vertical lifting torque detection structure (7) includes a torque box (71) and a guide frame (73). The torque box (71) is fixedly installed on the top of the detection platform (1). A winding roller (72) is rotatably installed on the inner side of the torque box (71). The guide frame (73) is fixedly installed on one side of the top of the detection platform (1). The inside of the guide frame (73) is rotatably connected to a pulley (74) through a pin. A traction rope (75) is slidably connected to the outer side of the pulley (74). A through hole (76) is slidably provided on the outer side of the traction rope (75).

3. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 2, characterized in that: The through hole (76) is fixedly opened at the top of the testing platform (1), and the other end of the traction rope (75) is rotatably connected to the outer wall of the winding roller (72).

4. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 1, characterized in that: The counterweight lifting structure (8) includes a base plate (81) and a scale line (85). The base plate (81) is fixedly connected to the lower end of the inner wall of the side plate (2). A slide rod (83) is fixedly installed above the base plate (81). A counterweight block (82) is slidably connected to the outer wall of the slide rod (83). A limit block (84) is threadedly installed at the top of the slide rod (83). The scale line (85) is fixedly installed on the outer wall of the side plate (2).

5. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 4, characterized in that: The top of the counterweight (82) is fixedly connected to the lower end of the traction rope (75), and one side of the outer wall of the counterweight (82) is slidably set relative to the scale line (85).

6. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 1, characterized in that: The motor output shaft adapter structure (6) includes a fixed cylinder (61) and a linkage shaft (65). The fixed cylinder (61) is fixedly installed at the top center of the test bench (1). The inner side of the fixed cylinder (61) is rotatably connected to a transmission sleeve (62) via a bearing. The inner wall of the transmission sleeve (62) is fixedly sleeved with a connecting pipe (63). The inner side of the connecting pipe (63) is slidably connected to the linkage shaft (65). The side wall of the transmission sleeve (62) is threaded with multiple mounting bolts (64).

7. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 1, characterized in that: The motor protection structure (5) includes a cylinder (51) and a motor body (54). The motor body (54) is movably mounted on one side of the top of the test bench (1). A connecting plate (53) is fixedly installed on the outer side of the motor body (54). The connecting plate (53) is threadedly connected to the top of the test bench (1) by bolts. A rotating shaft (55) is fixedly installed at the front end of the output shaft of the motor body (54). A protective shell (52) is movably sleeved on the outer side of the motor body (54). The cylinder (51) is fixedly installed at the top of the protective shell (52).

8. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 1, characterized in that: A crossbeam (4) is fixedly installed on the top of the positioning plate (3), and the lower end of the crossbeam (4) is fixedly connected to the top of the cylinder (51).

9. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 7, characterized in that: The end of the rotating shaft (55) is slidably connected to one end of the inner part of the connecting pipe (63).

10. The torque quality inspection system for a five-phase permanent magnet fault-tolerant motor according to claim 7, characterized in that: The other end of the linkage shaft (65) is fixedly connected to the end of the winding roller (72).

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