Rack for electric drive test

Abstract

The invention relates to the field of electric drive testing, in particular to a rack for electric drive testing. Before an electric drive unit is tested by an existing rack, adjustment and axis alignment are not convenient before a fixed position, position deviation is also easily caused by vibration of self operation of the electric drive unit during testing, wiring harnesses of wiring of the electric drive unit are not convenient to arrange, and the wiring harnesses are easily hooked on other objects. A rack for an electric drive test comprises a bottom plate and the like. One side of the bottom plate is fixedly connected with test equipment, one side of the test equipment is provided with a test port, the bottom plate is fixedly connected with a slide rail, two wheel carriers are placed on the bottom plate, and a connecting plate is fixedly connected between the two wheel carriers. The electric drive unit is fixed on the four hole plates through bolts, and when the electric drive unit is fixed, the distance between the four hole plates can be adjusted by horizontally moving the sliding rod and the sliding frame, so that the position of the electric drive unit is fixed after the electric drive unit is aligned with the axis of the test port.

Description

Technical Field

[0001] The present invention relates to the field of electric drive testing, and in particular to a test bench for electric drive testing. Background Art

[0002] During the manufacturing process of electric vehicles, testing the electric drive system is an important step to ensure the performance, reliability and safety of the motor and its control system in electric vehicles. The testing of the electric drive system covers all levels from the development stage to production quality control, involving multiple aspects of evaluation, mainly dynamic response testing, power output testing, load testing, etc. The electric drive test bench is a multi-functional equipment that cooperates with the electric drive system to complete the test.

[0003] However, the existing test bench is not convenient for adjusting and aligning the axis before fixing the position before testing the electric drive unit. During testing, it is also easy to cause position deviation due to the vibration of the electric drive unit's own operation. It is also not convenient to organize the wiring harness of the electric drive unit, which can easily cause the wiring harness to hook on other objects. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention provides an electric drive test bench which is more convenient for adjusting the position of an electric drive unit and then fixing it, which can also improve the stability of the electric drive unit during testing and facilitate the arrangement of wiring harnesses.

[0005] A bench for electric drive testing comprises a base plate, a test device is fixedly connected to one side of the base plate, a test port is provided on one side of the test device, a slide rail is fixedly connected to the base plate, two wheel frames are placed on the base plate, a connecting plate is fixedly connected between the two wheel frames, an electric slider is fixedly connected to the side of the connecting plate close to the slide rail, the electric slider cooperates with the slide rail, a placing mechanism is provided on the connecting plate, the placing mechanism is used to place and fix the electric drive unit, and positioning mechanisms are provided on both sides of the connecting plate, the positioning mechanism is used to fix the position of the electric drive unit.

[0006] Optionally, the placement mechanism includes two cross bars, the two cross bars are respectively fixedly connected to both sides of the connecting plate, two sliding rods are slidably connected to the two cross bars, the two sliding rods on the same cross bar form a group, two guide rails are connected between the two groups of sliding rods, two sliding racks are slidably connected to the two guide rails, each sliding rack is fixedly connected with a perforated plate, each perforated plate has a number of circular holes, a column is fixedly connected to the side of the connecting plate close to the test equipment, and two rollers are slidably connected to the column.

[0007] Optionally, the positioning mechanism includes two supporting bent rods, the two supporting bent rods are respectively fixedly connected to both sides of the connecting plate, the two supporting bent rods are slidably connected to a sliding support rod, each sliding support rod is slidably connected to a right-angle pressure rod on the upper part, a tension spring is connected between the right-angle pressure rod and the sliding support rod, and two block one and two block two are fixedly connected to the bottom plate, and the block one is in contact with one side of the sliding support rod.

[0008] Optionally, it also includes a limiting mechanism, which is arranged on the supporting bent rod, and is used to limit the positioned and fixed electric drive unit, and the limiting mechanism includes two sliding connecting rods, and the two sliding connecting rods are fixedly connected with vertical plates, and the two vertical plates are slidably connected with extrusion rods, and a pressure sensor is connected between the extrusion rod and the upper part of the vertical plate, and a dual-axis motor is fixedly connected to the middle of the connecting plate, and the pressure sensor is used to control the dual-axis motor to turn off, and threaded rotating rods are fixedly connected on both sides of the dual-axis motor, and the threaded rotating rod is connected to the vertical plate by threads, and an infrared sensor is fixedly connected to the bottom plate, and the infrared sensor is used to control the dual-axis motor.

[0009] The gear train is configured to be coupled to the gear train, wherein the two gear trains are coupled to the gear train, wherein the two gear trains are coupled to a gear train having two opposite ends, the two gear trains being coupled to the gear train.

[0010] The beneficial effects of the present invention are: 1. The electric drive unit is fixed to the four hole plates by bolts. When fixing the electric drive unit, the distance between the four hole plates can be adjusted by horizontally moving the sliding rod and the sliding frame so that the electric drive unit is aligned with the axis of the test port and then fixed in position.

[0011] 2. The rotation of the threaded rotating rod will drive the vertical plate to move horizontally toward the direction close to the dual-axis motor through the thread. The horizontal movement of the vertical plate will drive the pressure sensor and the extrusion rod to move horizontally together. After the extrusion rod moves horizontally for a distance, it will contact one side of the sliding frame. Then the vertical plate continues to drive the extrusion rod to move horizontally, and the extrusion rod begins to squeeze one side of the sliding frame, which will increase the reading of the pressure sensor. When the reading of the pressure sensor reaches a certain value, the pressure sensor is triggered and controls the dual-axis motor to close, so that the extrusion rod squeezes and limits the two sides of the four sliding frames, thereby limiting the electric drive unit, making it less likely for the electric drive unit to be displaced due to equipment vibration during testing, thereby improving the stability of the electric drive unit during testing.

[0012] 3. The supporting side plate drives the rack rod to continue to move horizontally with the connecting plate, and the rack rod will move upward for a distance under the guidance of the guide plate. The rack rod moving upward for a distance will drive the gear and the rotating semicircular ring to rotate 180°, and the rotation of the rotating semicircular ring will drive the blunt pressure rod to rotate together. When the blunt pressure rod rotates 180° together with the rotating semicircular ring, the blunt pressure rod will squeeze the wiring harness that has been placed in the supporting semicircular ring, and the pressure spring will be compressed, so that the wiring harness of the electric drive unit can be clamped and limited, so that the wiring harness is not easily hooked by other objects when the electric drive unit is moved and tested, thereby improving the safety of the electric drive unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the placement mechanism of the present invention.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the placement mechanism and the positioning mechanism of the present invention.

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0017] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the wire management mechanism of the present invention.

[0019] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged three-dimensional structure at point B in the middle.

[0020] Figure 8 It is a schematic diagram of the separated three-dimensional structure of the support plate and the guide plate of the present invention.

[0021] Markings in the accompanying drawings: 1: bottom plate, 2: test equipment, 21: test port, 31: slide rail, 32: wheel frame, 33: connecting plate, 34: electric slider, 41: cross bar, 42: sliding rod, 43: guide rail, 44: sliding frame, 45: hole plate, 46: column, 47: roller, 5: electric drive unit, 61: supporting bent rod, 62: sliding support rod, 63: right-angle pressure rod, 64: tension spring, 65: block one, 66: block two, 71: sliding connecting rod, 72: vertical plate, 73: extrusion rod, 74: pressure sensor, 75: dual-axis motor, 76: threaded rotating rod, 77: infrared sensor, 81: supporting side plate, 82: supporting semicircular ring, 83: rotating semicircular ring, 84: blunt pressure rod, 85: pressure spring, 86: gear, 87: support plate, 88: guide plate, 89: rack rod. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] Example 1

[0024] A test bench for electric drive, such as Figure 1-8 As shown, it includes a base plate 1, a test device 2 is fixedly connected to one side of the base plate 1, a test port 21 is provided on one side of the test device 2, a slide rail 31 is fixedly connected to the base plate 1, two wheel frames 32 are placed on the base plate 1, a connecting plate 33 is fixedly connected between the two wheel frames 32, an electric slider 34 is fixedly connected to the side of the connecting plate 33 close to the slide rail 31, the electric slider 34 cooperates with the slide rail 31, a placing mechanism is provided on the connecting plate 33, the placing mechanism is used to place and fix the electric drive unit 5, and positioning mechanisms are provided on both sides of the connecting plate 33, the positioning mechanism is used to fix the position of the electric drive unit 5.

[0025] The placement mechanism includes two cross bars 41, and the two cross bars 41 are respectively fixedly connected to the two sides of the connecting plate 33. Two sliding bars 42 are slidably connected to the two cross bars 41. The two sliding bars 42 on the same cross bar 41 form a group. Two guide rails 43 are connected between the two groups of sliding bars 42. Two sliding racks 44 are slidably connected to the two guide rails 43. Each of the sliding racks 44 is fixedly connected with a hole plate 45, and each of the hole plates 45 is provided with a plurality of circular holes. A column 46 is fixedly connected to the side of the connecting plate 33 close to the testing device 2, and two rollers 47 are slidably connected to the column 46.

[0026] The positioning mechanism includes two supporting bent rods 61, and the two supporting bent rods 61 are respectively fixedly connected to the two sides of the connecting plate 33, and the two supporting bent rods 61 are slidably connected with a sliding support rod 62, and each of the sliding support rods 62 is slidably connected with a right-angle pressure rod 63 on the upper part, and a tension spring 64 is connected between the right-angle pressure rod 63 and the sliding support rod 62, and two stopper blocks 1 65 and two stopper blocks 2 66 are fixedly connected to the bottom plate 1, and the stopper block 1 65 is in contact with one side of the sliding support rod 62.

[0027] In the actual working process, the operator first places the electric drive unit 5 to be tested on the four hole plates 45, and places the transmission shaft of the electric drive unit 5 on the roller 47. Since the center of the column 46 is aligned with the center of the test port 21, the transmission shaft of the electric drive unit 5 can be aligned with the center of the test port 21 by placing the transmission shaft of the electric drive unit 5 on the roller 47. Then, the electric drive unit 5 is fixed to the four hole plates 45 by bolts. When fixing the electric drive unit 5, the four holes can be adjusted by horizontally moving the sliding rod 42 and the sliding frame 44. The distance between the plates 45 is adjusted so that the electric drive unit 5 is aligned with the axis of the test port 21 and then fixed. After the operator fixes the electric drive unit 5, the distance between the four hole plates 45 and the sliding frame 44 is fixed. The operator then starts the electric slider 34, and the electric slider 34 drives the connecting plate 33 and the wheel frame 32 to move horizontally toward the direction close to the test device 2. Then the horizontal movement of the connecting plate 33 drives the supporting bent rod 61 to move horizontally together. The movement of the supporting bent rod 61 drives the sliding support rod 62 to move horizontally toward the direction close to the test device 2. The sliding support rod 6 After moving horizontally for a certain distance, one side of the sliding support rod 62 will contact the second stopper 66, and then the supporting bent rod 61 will continue to move horizontally, and the sliding support rod 62 will be blocked by the second stopper 66 and stop moving horizontally, and the sliding support rod 62 and the right-angle pressure rod 63 will not continue to move horizontally with the sliding support rod 62, and then after the sliding support rod 62 continues to move for a certain distance, the right-angle pressure rod 63 will squeeze the sliding frame 44 and drive the sliding frame 44 to move a certain distance along the guide rail 43 toward one side of the connecting plate 33, and then one side of the sliding frame 44 will be stuck by the sliding rod 42, and the right-angle pressure rod 63 will squeeze the sliding frame 44. After the sliding rod 42 clamps the sliding frame 44, the hole plate 45 and the electric drive unit 5 are not easily displaced. Then, after the electric drive unit 5 moves a certain distance together with the connecting plate 33 and the wheel frame 32, the transmission shaft of the electric drive unit 5 is inserted into the test equipment 2 through the test port 21. Then the operator connects the power to the electric drive unit 5 to start the electric drive unit 5 and drive the transmission shaft to rotate. Then the test equipment 2 measures the test data of the transmission shaft of the electric drive unit 5. After the electric drive unit 5 completes the test, the operator starts the electric slider 34 to move in the opposite direction and reset.

[0028] Example 2

[0029] On the basis of Example 1, Figure 4-5 As shown, it also includes a limiting mechanism, which is arranged on the supporting bent rod 61. The limiting mechanism is used to limit the positioned and fixed electric drive unit 5. The limiting mechanism includes two sliding links 71. The two sliding links 71 are fixedly connected with a vertical plate 72. The two vertical plates 72 are slidably connected with an extrusion rod 73. A pressure sensor 74 is connected between the extrusion rod 73 and the upper part of the vertical plate 72. A dual-axis motor 75 is fixedly connected to the middle of the connecting plate 33. The pressure sensor 74 is used to control the dual-axis motor 75 to turn off. Threaded rotating rods 76 are fixedly connected on both sides of the dual-axis motor 75. The threaded rotating rod 76 is connected to the vertical plate 72 by threads. An infrared sensor 77 is fixedly connected to the bottom plate 1, and the infrared sensor 77 is used to control the dual-axis motor 75.

[0030] When the wheel frame 32 and the connecting plate 33 drive the electric drive unit 5 to move horizontally for a distance in the direction close to the test equipment 2, the connecting plate 33 stops moving, the transmission shaft of the electric drive unit 5 is inserted into the test equipment 2 through the test port 21, and the connecting plate 33 triggers the infrared sensor 77. The infrared sensor 77 is triggered to control the dual-axis motor 75 to start and drive the threaded rotating rod 76 to rotate. Then the rotation of the threaded rotating rod 76 will drive the vertical plate 72 to move horizontally in the direction close to the dual-axis motor 75 through the thread. The horizontal movement of the vertical plate 72 will drive the pressure sensor 74 and the extrusion rod 73 to move horizontally together. After the extrusion rod 73 moves horizontally for a distance, it will contact one side of the sliding frame 44. Then the vertical plate 72 continues to drive the extrusion rod 73 to move horizontally together. Start squeezing one side of the sliding frame 44, and then the reading of the pressure sensor 74 will become larger. When the reading of the pressure sensor 74 reaches a certain value, the pressure sensor 74 is triggered and controls the dual-axis motor 75 to close, so that the squeezing rod 73 squeezes and limits the two sides of the four sliding frames 44, and then limits the electric drive unit 5, so that the electric drive unit 5 is not easily positionally offset due to equipment vibration during testing, thereby improving the stability of the electric drive unit 5 during testing. Then, when the electric drive unit 5 completes the test, the electric slider 34 will drive the connecting plate 33 to move horizontally in the opposite direction to reset, and then the infrared sensor 77 will no longer be triggered. If the infrared sensor 77 is not triggered, it will control the dual-axis motor 75 to start and rotate in the opposite direction to reset, thereby driving the squeezing rod 73 to reset.

[0031] Example 3

[0032] On the basis of Example 2, Figure 6-8As shown, it also includes a wire management mechanism, which is arranged on the cross bar 41, and is used to organize the wiring of the electric drive unit 5. The wire management mechanism includes two support side plates 81, and the two support side plates 81 are respectively fixedly connected between the two sides of the two cross bars 41. A plurality of support semicircular rings 82 are fixedly connected to the two support side plates 81, and each of the support semicircular rings 82 is rotatably connected to a rotating semicircular ring 83, and each of the rotating semicircular rings 83 is slidably connected to a blunt pressure rod 84, and the blunt pressure rod 84 is slidably connected to the blunt pressure rod 84. A pressure spring 85 is connected between the rod 84 and the rotating semicircular ring 83, a gear 86 is fixedly connected to the rotating shaft of each rotating semicircular ring 83, a support plate 87 is fixedly connected to one side of each sliding support rod 62, and a plurality of guide plates 88 are fixedly connected to each support plate 87, and a guide groove is opened on the guide plate 88. A plurality of rack rods 89 are slidably connected to the two supporting side plates 81, and the lower part of the rack rod 89 is located in the guide groove on the guide plate 88, and the rack rod 89 is meshed with the gear 86.

[0033] After the electric drive unit 5 is fixed on the four hole plates 45, the operator can first place the wiring on the electric drive unit 5 in a plurality of supporting semicircular rings 82, and then when the electric drive unit 5 moves horizontally toward the direction close to the test equipment 2 together with the connecting plate 33, the connecting plate 33 will drive the supporting side plates 81 and the supporting semicircular rings 82 to move horizontally together, and when the sliding support rod 62 is blocked by the stopper 66 and stops moving horizontally, the supporting plate 87 and the guide plate 88 will also stop moving horizontally together with the sliding support rod 62, and then the supporting side plate 81 drives the rack rod 89 to continue to move horizontally along with the connecting plate 33, and the rack rod 89 will move horizontally. The guide plate 88 moves upward for a distance under the guidance of the rack rod 89, which will drive the gear 86 and the rotating semicircular ring 83 to rotate 180°. The rotation of the rotating semicircular ring 83 will drive the blunt pressure rod 84 to rotate together. When the blunt pressure rod 84 rotates 180° together with the rotating semicircular ring 83, the blunt pressure rod 84 will squeeze the wiring harness that has been placed in the supporting semicircular ring 82, and the pressure spring 85 will be compressed. In this way, the wiring harness of the electric drive unit 5 can be clamped and limited, so that the wiring harness is not easily hooked by other objects when the electric drive unit 5 is moved and tested, thereby improving the safety of the electric drive unit 5.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric drive test bench, characterized by: The invention comprises a base plate (1), a test device (2) is fixedly connected to one side of the base plate (1), a test port (21) is provided on one side of the test device (2), a slide rail (31) is fixedly connected to the base plate (1), two wheel frames (32) are placed on the base plate (1), a connecting plate (33) is fixedly connected between the two wheel frames (32), an electric slider (34) is fixedly connected to the side of the connecting plate (33) close to the slide rail (31), the electric slider (34) cooperates with the slide rail (31), a placing mechanism is provided on the connecting plate (33), the placing mechanism is used to place and fix the electric drive unit (5), and positioning mechanisms are provided on both sides of the connecting plate (33), the positioning mechanisms are used to fix the position of the electric drive unit (5).

2. The electric drive test bench according to claim 1, characterized in that: The placement mechanism comprises two cross bars (41), the two cross bars (41) are respectively fixedly connected to the two sides of the connecting plate (33), two sliding bars (42) are slidably connected to the two cross bars (41), the two sliding bars (42) on the same cross bar (41) form a group, two guide rails (43) are connected between the two groups of sliding bars (42), two sliding racks (44) are slidably connected to the two guide rails (43), each of the sliding racks (44) is fixedly connected to a hole plate (45), each of the hole plates (45) is provided with a plurality of circular holes, a column (46) is fixedly connected to one side of the connecting plate (33) close to the test device (2), and two rollers (47) are slidably connected to the column (46).

3. The electric drive test bench according to claim 2, characterized in that: The positioning mechanism comprises two supporting bent rods (61), the two supporting bent rods (61) are respectively fixedly connected to the two sides of the connecting plate (33), the two supporting bent rods (61) are slidably connected to a sliding support rod (62), the upper part of each sliding support rod (62) is slidably connected to a right-angle pressure rod (63), a tension spring (64) is connected between the right-angle pressure rod (63) and the sliding support rod (62), and two stopper blocks (65) and two stopper blocks (66) are fixedly connected to the bottom plate (1), and the stopper block (65) is in contact with one side of the sliding support rod (62).

4. The electric drive test bench according to claim 3, characterized in that: The invention also comprises a limiting mechanism, wherein the limiting mechanism is arranged on the supporting bent rod (61), and the limiting mechanism is used to limit the electric drive unit (5) that has been positioned and fixed. The limiting mechanism comprises two sliding connecting rods (71), and the two sliding connecting rods (71) are fixedly connected to a vertical plate (72), and the two vertical plates (72) are slidably connected to an extrusion rod (73), and a pressure sensor (74) is connected between the extrusion rod (73) and the upper part of the vertical plate (72). A dual-axis motor (75) is fixedly connected to the middle part of the connecting plate (33), and the pressure sensor (74) is used to control the dual-axis motor (75) to turn off. Both sides of the dual-axis motor (75) are fixedly connected to threaded rotating rods (76), and the threaded rotating rods (76) are connected to the vertical plate (72) by threads. An infrared sensor (77) is fixedly connected to the bottom plate (1), and the infrared sensor (77) is used to control the dual-axis motor (75).

5. The electric drive test bench according to claim 4, characterized in that: The utility model also comprises a wire management mechanism, wherein the wire management mechanism is arranged on the cross bar (41), and the wire management mechanism is used for organizing the wiring of the electric drive unit (5), and the wire management mechanism comprises two supporting side plates (81), and the two supporting side plates (81) are respectively fixedly connected between the two sides of the two cross bars (41), and the two supporting side plates (81) are fixedly connected with a plurality of supporting semicircular rings (82), and each of the supporting semicircular rings (82) is rotatably connected with a rotating semicircular ring (83), and each of the rotating semicircular rings (83) is slidably connected with a blunt-headed pressure rod (84), and the blunt-headed pressure rod (84) is slidably connected with the rotating semicircular ring (83), and the blunt-headed pressure rod (84) is slidably connected with the rotating semicircular ring (83). A pressure spring (85) is connected between the rotating semicircular rings (83); a gear (86) is fixedly connected to the rotating shaft of each rotating semicircular ring (83); a support plate (87) is fixedly connected to one side of each sliding support rod (62); a plurality of guide plates (88) are fixedly connected to each support plate (87); a guide groove is formed on the guide plate (88); a plurality of rack rods (89) are slidably connected to the two supporting side plates (81); the lower part of the rack rod (89) is located in the guide groove on the guide plate (88); and the rack rod (89) is meshed with the gear (86).

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