Detection test device for mining storage battery electric drive system

Abstract

The invention discloses a mining storage battery electric drive system safety performance test device, which comprises a safety test cavity, a loading system and a measurement and control system, and is characterized in that the safety test cavity comprises a cavity body and a cavity cover; the loading system comprises a first power supply, a first switch cabinet, a transformer, a second switch cabinet, a second power supply, a DC power supply, a first switching cabinet, a second switching cabinet, a dynamometer driver, a dynamometer, a rack, a tested mining motor and a tested mining motor speed regulator. The measurement and control system comprises an electrical parameter detection system, a mechanical parameter detection system, a temperature protection system, a vibration protection system and an upper computer. According to the invention, the mining storage battery, the mining motor speed regulator and the mining motor can be connected together, related tests of an electric drive system of the mining storage battery are completed, and the test efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mining electric vehicle detection, and specifically relates to a mining battery electric drive system detection test device. Background Art

[0002] The mining battery electric drive system is used for traction operations of mining electric vehicles and consists of mining batteries, mining motor speed regulators and mining motors. At present, the test items of the mining battery electric drive system adopt the method of conducting individual tests on mining batteries, mining motors and mining motor speed regulators respectively. This detection method is simple and complicated, and does not truly test the performance of the entire mining battery electric drive system. How to perform parameter measurement on the explosion-proof performance and electrical performance of a complete set of mining battery electric drive systems including mining batteries, mining motors and mining motor speed regulators is one of the problems that need to be solved urgently. Summary of the invention

[0003] In view of the problems of cumbersome operation and low efficiency caused by the current single-item inspection of the electric drive system of mining electric vehicles, the present invention proposes a safety performance test device for the electric drive system of a mining battery, which can effectively solve the problems existing in the prior art.

[0004] In order to achieve the above technical objectives and the above technical effects, the invention is implemented through the following technical solutions:

[0005] A safety performance test device for a mining battery electric drive system comprises a safety test chamber, a loading system and a measurement and control system. The loading system comprises a first power supply, a first switch cabinet, a transformer, a second switch cabinet, a second power supply, a DC power supply, a first switching cabinet, a second switching cabinet, a dynamometer driver, a dynamometer, a test bench and a tested mining motor speed regulator. The first power supply is an incoming power supply, which is connected to a transformer after passing through the first switch cabinet, and the transformer is connected to a second power supply after passing through the second switch cabinet. The second power supply outputs DC power after passing through the DC power supply. The input end of the first switching cabinet is connected to the first switch cabinet, the second switch cabinet and the DC power supply. The power supply has an output end connected to a second switching cabinet, the second switching cabinet is connected to the mining battery in the safety test chamber, the first switching cabinet and the tested mining motor speed regulator, the second switching cabinet is connected to the mining battery in the safety test chamber through the flameproof terminal in the chamber, the DC power supply input is a second power supply, and the output is a DC power with adjustable voltage, the DC power supply includes a mining battery discharge test function, the dynamometer driver and the dynamometer provide a load for the tested mining motor; the measurement and control system includes an electrical parameter detection system, a mechanical parameter detection system, a temperature protection system, a vibration protection system and a host computer.

[0006] Furthermore, the safety test chamber includes a flameproof terminal block, which connects the mining battery in the chamber and the second switching cabinet outside the chamber; the flameproof terminal block meets the explosion-proof requirements for mining electrical equipment.

[0007] Furthermore, the first switching cabinet is used for switching the first power supply, the second power supply and the DC power supply of the output circuit, and the second switching cabinet includes five test conditions by combining with the first switching cabinet:

[0008] In the first test condition, the output of the first switch cabinet is disconnected, and the second switch cabinet is connected to the mining battery in the safety test chamber and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the mining battery; and is used to test the tested mining battery, the tested mining motor speed regulator and the tested mining motor;

[0009] In the second test condition, the first switch cabinet is connected to the DC power supply, the second switch cabinet is connected to the first switch cabinet and the tested mine motor speed regulator, and the mining battery in the safety test chamber is disconnected; the tested mine motor speed regulator is powered by the DC power supply; it is used to test the tested mine motor speed regulator and the tested mine motor;

[0010] The third test condition is that the first switch cabinet is connected to the DC power supply, the second switch cabinet is connected to the mining battery in the safety test chamber and the first switch cabinet, and the speed regulator of the tested mining motor is disconnected; it is used to test the charging and discharging performance of the tested mining battery through the DC power supply;

[0011] In the fourth test condition, the first switching cabinet is connected to the first power supply, and the second switching cabinet is connected to the first switching cabinet and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the first power supply; and is used to test the tested mining motor speed regulator and the tested mining motor;

[0012] In the fifth test condition, the first switching cabinet is connected to the second power supply, and the second switching cabinet is connected to the first switching cabinet and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the second power supply; and is used to test the tested mining motor speed regulator and the tested mining motor.

[0013] Furthermore, the electrical parameter detection system includes a first current sensor, a first voltage sensor, a second current sensor, a second voltage sensor and a first acquisition module. The first current sensor and the first voltage sensor detect the current and voltage at the input end of the motor speed regulator under test, the second current sensor and the second voltage sensor detect the current and voltage at the output end of the motor speed regulator under test, and the first acquisition module collects data collected by the first current sensor, the first voltage sensor, the second current sensor and the second voltage sensor. The first acquisition module is connected to a host computer and exchanges data.

[0014] Furthermore, the mechanical parameter detection system includes a speed and torque sensor and a second acquisition module; the speed and torque sensor measures the speed and torque of the output shaft of the tested mining motor; the second acquisition module collects the data collected by the speed and torque sensor; the second acquisition module is connected to the host computer and exchanges data.

[0015] Furthermore, the temperature protection system includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a third acquisition module; the first temperature sensor measures the temperature of the tested mining motor winding, the second temperature sensor measures the temperature of the bearing seat, and the third temperature sensor measures the winding temperature of the dynamometer; the third acquisition module collects the temperatures collected by the first temperature sensor, the second temperature sensor and the third temperature sensor; the third acquisition module is connected to the host computer and exchanges data.

[0016] Furthermore, the vibration protection system includes a first vibration sensor, a second vibration sensor, a third vibration sensor and a fourth acquisition module; the first vibration sensor is installed on the bearing seat base to measure the vibration of the bearing seat; the second vibration sensor is installed on the speed torque sensor base to measure the vibration of the speed torque sensor base; the third vibration sensor is installed on the platform to measure the vibration of the platform; the fourth acquisition module collects data collected by the first vibration sensor, the second vibration sensor and the third vibration sensor; the fourth acquisition module is connected to the host computer and exchanges data.

[0017] Furthermore, the host computer is connected to a DC power supply, a dynamometer driver, a first acquisition module, a second acquisition module, a third acquisition module, and a fourth acquisition module; the DC power supply output voltage and current are set by interacting with the DC power supply, and the dynamometer output speed and loading torque are set by interacting with the dynamometer driver; the input electric power of the tested mining motor speed regulator is obtained by calculating the data of the first current sensor and the first voltage sensor transmitted by the first acquisition module, and the output electric power of the tested mining motor speed regulator is obtained by calculating the data of the second current sensor and the second voltage sensor; the mechanical power of the tested mining motor is obtained by calculating the speed and torque data transmitted by the second acquisition module, the test device is protected from over-temperature by the temperature data transmitted by the third acquisition module, and the test device is protected from vibration over-limit by the vibration data transmitted by the fourth acquisition module.

[0018] Furthermore, the test bench includes a platform and a dynamometer base, a sensor base, a first coupling, a bearing seat, a bearing seat base, a second coupling, a first tested mining motor bracket and a second tested mining motor bracket installed on the platform, the first tested mining motor bracket is used to connect a flange-type mining motor, and the second tested mining motor bracket is used to connect a base-type motor, wherein the first tested mining motor bracket includes a machine shaft fixing part and a flange-type fixing part, and the second tested mining motor bracket includes a table plate and a base connecting plate, the flange-type fixing part is fixedly installed on the platform, the machine shaft fixing part is arranged at the center of the flange-type fixing part, and is used to connect the power shaft of the first tested mining motor / the second tested mining motor, the table plate is installed on the platform so as to be displaceable in the front and rear directions and the height direction, the base connecting plate is symmetrically arranged on the top of the table plate in the left and right directions, and the distance between the two base connecting plates is adjustable.

[0019] Furthermore, the flange-type fixing component includes a disc body portion and a bolt connection hole opened on the disc body portion, and the machine shaft fixing component includes a connecting shaft and a shaft clamping block. The connecting shaft is rotatably passed through the center of the disc body portion, and a plurality of shaft clamping blocks are centrally symmetrically arranged at the end of the connecting shaft. The shaft clamping block clamps the power shaft of the first test motor / the second test motor by displacing inward, and the other end of the connecting shaft is connected to the second coupling.

[0020] The beneficial effects of the invention are:

[0021] The safety performance test device for the mining battery electric drive system provided by the present invention can complete the flameproof and explosion-resistant performance tests of the mining electric drive system, the speed regulation performance test of the mining electric drive system, and the charge and discharge performance test of the mining battery. During the test, the mining battery is placed in the safety test chamber, and the mining battery in the chamber is connected to the second switching cabinet outside the safety test chamber through the flameproof terminal. The tested mining motor speed regulator is connected through the second switching cabinet, and the load of the mining electric vehicle is simulated by the dynamometer to test the speed regulation performance of the tested mining motor speed regulator and the tested mining motor, as well as the discharge of the mining battery under different load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is the structural diagram of the test device given in this example;

[0024] Figure 2 A diagram of the bench structure is provided for this embodiment;

[0025] Figure 3 A schematic diagram of a first tested mining motor bracket and a second tested mining motor bracket is provided for the invention;

[0026] Figure 4 For invention Figure 3 The schematic diagram of the tested mining motor is hidden;

[0027] Figure 5 For the present invention Figure 4 A partial schematic diagram of the

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the splitting;

[0029] Figure 7 For the present invention Figure 6 Another perspective of the picture;

[0030] Figure 8 For the present invention Figure 5 A cross-sectional view of

[0031] Fig. 9 For the present invention Figure 8 Enlarged view of point A.

[0032] Figure numerals: 1. Safety test chamber, 201. First power supply, 202. First switch cabinet, 203. Transformer, 204. Second switch cabinet, 205. Second power supply, 206. DC power supply, 207. First switching cabinet, 208. Second switching cabinet, 209. Host computer, 210. Dynamometer driver, 211. Dynamometer, 212. Test bench, 213. Tested mining motor, 214. Tested mining motor speed regulator, 215. Tested mining battery, 301. First acquisition module, 302. Second acquisition module, 303. Third acquisition module, 304. Fourth acquisition module, 401. Platform, 402. Dynamometer base, 403. Sensor base, 404. First coupling, 405. Bearing seat base, 406. Bearing seat, 407. Second coupling, 408. First tested mining battery Motor bracket, 409. Second tested mining motor bracket, 410. First temperature sensor, 411. Second temperature sensor, 412. Third temperature sensor, 421. First vibration sensor, 422. Second vibration sensor, 423. Third vibration sensor, 501. Speed ​​torque sensor, 6. Shaft fixing part, 7. Flange type fixing part, 8. Table, 9. Base connecting plate, 701. Disk body part, 702. Bolt connection hole, 703. Through hole, 601. Connecting shaft, 602. Shaft clamp, 603. Turntable, 604. Slide rail, 10. External thread ring, 11. Axial slider, 12. Axial slide groove, 13. Internal thread ring, 14. Gear ring, 15. Gear, 16. Rack, 17. Cylinder, 18. Fork lift, 19. Transverse track, 20. Guide rod, 21. Bidirectional screw rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 9 As shown, this embodiment discloses a safety performance test device for a mining battery electric drive system, including a safety test chamber, a loading system and a measurement and control system. The safety test chamber is used to place mining batteries, the loading system is used to provide a load to the tested mining motor, and the measurement and control system is used to measure electrical parameters and mechanical parameters.

[0035] The safety test chamber includes a chamber body and a chamber cover, which meet explosion-proof requirements. The chamber body is used to place mining batteries. During the test, the chamber cover is opened, the mining batteries are placed in the chamber, and then the chamber cover is closed. The safety test chamber is in a closed state and withstands a pressure of 2MPa.

[0036] Furthermore, the cavity includes a flameproof terminal, one end of which is connected to the tested mining battery 215 in the cavity, and the other end is connected to the second switching cabinet 208 outside the cavity; the flameproof terminal meets the explosion-proof requirements of mining electrical equipment.

[0037] The loading system includes a first power supply 202, a first switch cabinet 201, a transformer 203, a second switch cabinet 204, a second power supply 205, a DC power supply 206, a first switching cabinet 207, a second switching cabinet 208, a dynamometer driver 210, a dynamometer 211, a test bench 212, a tested mining motor 213 and a tested mining motor speed regulator 214.

[0038] The incoming power is drawn from the 1140V power grid for mining and connected to the first switch cabinet 201 to output the first power supply 202. The first switch cabinet 201 is the main power switch of the safety performance test device of the mining battery electric drive system. The output terminal of the first switch cabinet 201 is connected to the primary side of the transformer 203. The first power supply 1140V outputs 380V after passing through the transformer 203, and after passing through the second switch cabinet 204, provides the second power supply 202 for the DC power supply 206 and the dynamometer driver 210.

[0039] The DC power supply 206 provides DC power to the tested mining motor speed regulator 214. The DC power supply 206 inputs the second power supply 205 and outputs adjustable voltage DC power. The DC power supply 206 includes a mining battery discharge test function.

[0040] The second switch cabinet 204 is a 380V power distribution switch used to close or disconnect the 380V power supply. The input terminal of the second switch cabinet 204 is connected to the secondary side of the transformer 203, and the output terminal is connected to the second power supply 205, the DC power supply 206, the first switch cabinet 207 and the dynamometer driver 210.

[0041] The first switch cabinet 207 is used for switching the output circuit first power supply 202, second power supply 205 and DC power supply 206. The input end of the first switch cabinet 207 is connected to the first switch cabinet 201, the second switch cabinet 204 and the DC power supply 206, and the output end is connected to the second switch cabinet 208.

[0042] The second switch cabinet 208 is connected to the mining battery 215 in the safety test chamber, the first switch cabinet 207 and the tested mining motor speed regulator 214.

[0043] The second switch cabinet 208 includes five test conditions by combining with the first switch cabinet 207:

[0044] In the first test condition, the output of the first switch cabinet 207 is disconnected, and the second switch cabinet 208 is connected to the tested mine motor speed regulator 214 and the mine battery 215 in the safety test chamber; the tested mine motor speed regulator 214 is powered by the mine battery 215; this test condition is used to test the tested mine motor 213, the tested mine motor speed regulator 214 and the tested mine battery 215;

[0045] In the second test condition, the first switch cabinet 207 is connected to the DC power supply 206, and the first power supply 202 and the second power supply 205 are disconnected. The second switch cabinet 208 is connected to the first switch cabinet 207 and the tested mining motor speed regulator 214, and the mining battery 215 in the safety test chamber is disconnected; the tested mining motor speed regulator 214 is powered by the DC power supply 206; this test condition is used to test the tested mining motor 213 and the tested mining motor speed regulator 214;

[0046] In the third test condition, the first switching cabinet 207 connects the DC power supply 206, disconnects the first power supply 202 and the second power supply 205, and the second switching cabinet 208 connects the mining battery 215 in the safety test chamber and the first switching cabinet 207, and disconnects the tested mining motor speed regulator 214; this test condition is used to test the charging and discharging performance of the tested mining battery 215 through the DC power supply 206.

[0047] In the fourth test condition, the first switching cabinet 207 is connected to the first power supply 202, and the second power supply 205 and the DC power supply 206 are disconnected, and the second switching cabinet 208 is connected to the first switching cabinet 207 and the tested mining motor speed regulator 214; the tested mining motor speed regulator 214 is powered by the first power supply 202; this test condition is used to test the tested mining motor 213 and the tested mining motor speed regulator 214;

[0048] The fifth test condition is that the first switching cabinet 207 is connected to the second power supply 205, the first power supply 202 and the DC power supply 206 are disconnected, and the second switching cabinet 208 is connected to the first switching cabinet 207 and the tested mining motor speed regulator 214; the tested mining motor speed regulator 214 is powered by the second power supply 205; this test condition is used for the tested mining motor 213 and the tested mining motor speed regulator 214;

[0049] The test bench includes a platform 401, a dynamometer base 402, a sensor base 403, a first coupling 404, a bearing seat base 405, a bearing seat 406, a second coupling 407, a first tested mining motor bracket 408, and a second tested mining motor bracket 409.

[0050] The platform 401 is fixedly mounted with a dynamometer base 402, a sensor base 403, a bearing base 405, a first tested mining motor bracket 408, and a second tested mining motor bracket 409. The first tested mining motor bracket 408 is used to connect a flange-type mining motor, and the second tested mining motor bracket 409 is used to connect a pedestal motor.

[0051] The dynamometer 211 is fixed on the dynamometer base 402 , the speed torque sensor 501 is fixed on the sensor base 403 , and the bearing seat 406 is fixed on the bearing seat base 405 .

[0052] The first tested mining motor bracket 408 and the second tested mining motor bracket 409 are fixed on the platform 401, which are suitable for tested mining motors of different powers. The first tested mining motor bracket 408 is a flange bracket, and the second tested mining motor bracket 409 is a base bracket. The tested mining motor 213 is fixed on the first tested mining motor bracket 408 or the second tested mining motor bracket 409.

[0053] Furthermore, the dynamometer 211 , the speed torque sensor 501 , the bearing seat 406 , and the tested mining motor 213 are connected on the same axis through the first coupling 404 and the second coupling 407 .

[0054] The measurement and control system includes an electrical parameter detection system, a mechanical parameter detection system, a temperature protection system, a vibration protection system and a host computer 209 .

[0055] The electrical parameter detection system includes a first current sensor 3011, a first voltage sensor 3012, a second current sensor 3013, a second voltage sensor 3014 and a first acquisition module 301. The first current sensor 3011 and the first voltage sensor 3012 detect the current and voltage at the input end of the motor speed regulator under test, and the second current sensor 3013 and the second voltage sensor 3014 detect the current and voltage at the output end of the motor speed regulator under test. The first acquisition module 301 collects data collected by the first current sensor 3011, the first voltage sensor 3012, the second current sensor 3013, and the second voltage sensor 3014. The first acquisition module 301 is connected to the host computer 209 and performs data exchange.

[0056] The mechanical parameter detection system includes a speed torque sensor 501 and a second acquisition module 302; the speed torque sensor 501 measures the speed and torque of the output shaft of the tested mining motor 213; the second acquisition module 302 collects the data collected by the speed torque sensor 501; the second acquisition module 302 is connected to the host computer 209 and exchanges data.

[0057] The temperature protection system includes a first temperature sensor 410, a second temperature sensor 411, a third temperature sensor 412 and a third acquisition module 303; the first temperature sensor 410 measures the temperature of the tested mining motor winding, the second temperature sensor 411 measures the temperature of the bearing seat, and the third temperature sensor 412 measures the winding temperature of the dynamometer; the third acquisition module 303 collects the temperatures collected by the first temperature sensor 410, the second temperature sensor 411 and the third temperature sensor 412; the third acquisition module 303 is connected to the host computer 209 and exchanges data.

[0058] The vibration protection system includes a first vibration sensor 421, a second vibration sensor 422, a third vibration sensor 423 and a fourth acquisition module 304; the first vibration sensor 421 is installed on the bearing seat base to measure the vibration of the bearing seat 405; the second vibration sensor 422 is installed on the speed torque sensor base 403 to measure the vibration of the speed torque sensor base 403; the third vibration sensor 423 is installed on the platform 401 to measure the vibration of the platform 401; the fourth acquisition module 304 collects data collected by the first vibration sensor 421, the second vibration sensor 422 and the third vibration sensor 423; the fourth acquisition module 304 is connected to the host computer 209 and exchanges data.

[0059] The host computer 209 is connected to the DC power supply 206 , the dynamometer driver 210 , the first acquisition module 301 , the second acquisition module 302 , the third acquisition module 303 and the fourth acquisition module 304 .

[0060] The DC power supply is interactively controlled to output an adjustable DC voltage and current through the DC power supply 206, and the dynamometer output speed and loading torque are interactively controlled through the dynamometer driver 210. The input electric power of the tested mining motor speed regulator 214 is calculated by the data of the first current sensor 3011 and the first voltage sensor 3012 transmitted by the first acquisition module 301, the output electric power of the tested mining motor speed regulator 214 is calculated by the data of the second current sensor 3013 and the second voltage sensor 3014, the mechanical power of the tested mining motor 213 is calculated by the speed and torque data transmitted by the second acquisition module 302, the test device is protected from over-temperature through the temperature data transmitted by the third acquisition module 303, and the test device is protected from vibration over-limit through the vibration data transmitted by the fourth acquisition module 304.

[0061] Please refer to Figures 3 to 9Among them, the first tested mining motor bracket 408 includes a machine shaft fixing part 6 and a flange-type fixing part 7, the second tested mining motor bracket 409 includes a table plate 8 and a base connecting plate 9, the flange-type fixing part 7 is fixedly installed on the platform 401, the machine shaft fixing part 6 is arranged at the center of the flange-type fixing part 7, and is used to connect the power shaft of the first tested mining motor / the second tested mining motor, the table plate 8 is installed on the platform 401 so as to be displaceable in the front and rear directions and the height directions, the base connecting plate 9 is symmetrically arranged on the top of the table plate 8 in the left and right directions, and the distance between the two base connecting plates 9 is adjustable.

[0062] The flange-type fixing part 7 includes a disc body part 701 and a bolt connection hole 702 opened on the disc body part. The machine shaft fixing part 6 includes a connecting shaft 601 and a shaft clamping block 602. The connecting shaft 601 is rotatably passed through the center of the disc body part 701. A plurality of shaft clamping blocks 602 are centrally symmetrically arranged at the end of the connecting shaft 601. The shaft clamping block 602 clamps the power shaft of the first test motor / the second test motor by displacing inward. The other end of the connecting shaft 601 is connected to the second coupling 407.

[0063] Specifically, a through hole 703 is opened in the center of the disk body 701, and a turntable 603 is fixedly connected to the end of the connecting shaft 601, and the turntable 603 is rotatably installed in the through hole 703. The shaft clamp 602 is radially slidably installed on the surface of the turntable 603, and the end of the shaft clamp 602 away from the center is slidably sleeved with a quarter-circular arc slide rail 604, and the outer side surface of the slide rail 604 is a conical structure away from the disk body 701. The surface of the disk body 701 is provided with an external threaded ring 10, and an axial slider 11 is equidistantly fixed on the end surface of the external threaded ring 10 facing the disk body 701. 01 is provided with an axial slide groove 12 for the axial slider 11 to slide in and out, the inner wall surface of the external threaded ring 10 at one end away from the disc body part 701 is set to a conical surface compatible with the slide rail 604, the external thread of the external threaded ring 10 is sleeved with an internal threaded ring 13, the end of the internal threaded ring 13 is rotatably mounted on the disc body part 701, the external sleeve of the internal threaded ring 13 is provided with a gear ring 14, one side of the gear ring 14 is meshed with a gear 15, one side of the gear 15 is meshed with a rack 16, and the rack 16 is fixedly mounted on the protruding end of the cylinder 17, and the cylinder 17 is fixedly mounted on the first tested mining motor bracket 408.

[0064] The rack 16 is displaced by controlling the extension and contraction of the oil cylinder 17, and the rack 16 drives the gear ring 14 to rotate through the gear 15, and the gear ring 14 drives the internal thread ring 13 to rotate. At this time, the internal thread ring 13 drives the external thread ring 10 to displace axially. When the external thread ring 10 displaces axially inward, it squeezes the slide rail 604 inward, and the slide rail 504 enables the shaft clamp 602 to clamp and fix the power shaft of the first tested mining motor / the second tested mining motor, thereby realizing the connection and fixation of the power shaft of the first tested mining motor / the second tested mining motor with the connecting shaft 601. At this time, the four slide rails 604 form a complete circular ring, and when the connecting shaft 601 rotates, the outer end of the shaft clamp 602 moves in a circle between the four slide rails 604. It should be noted that, through the above arrangement, the slide rail 604 is effectively limited by the shaft clamp 602 and the external thread ring 10, which can prevent the slide rail 604 from being separated from the shaft clamp 602, and has the effect of assisting in the stable installation of the slide rail 604.

[0065] A forklift 18 is provided at the bottom of the table 8, and transverse tracks 19 are provided on both sides of the top of the platform 401, and the two sides of the bottom of the forklift 18 are respectively connected to two transverse tracks 19, and the two sides between the two base connecting plates 9 are slidably sleeved on the guide rod 20, and the two ends of the guide rod 20 are fixedly connected to the table 8, and the middle part between the two base connecting plates 9 is respectively threadedly sleeved on the bidirectional screw rod 21, and the bidirectional screw rod 21 is rotatably installed on the table 8.

[0066] The tops of the two base connecting plates 9 on opposite sides are configured as inclined surfaces with the tops tilted outwards, which are used to support the two sides of the bottom of the flange motor, so as to facilitate the connection between the flange motor and the connecting shaft 601. The top surface of the base connecting plate 9 is provided with a strip groove, which is convenient for connecting the base of the base motor.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety performance test device for a mining battery electric drive system, characterized in that: It includes a safety test chamber, a loading system and a measurement and control system. The loading system includes a first power supply, a first switch cabinet, a transformer, a second switch cabinet, a second power supply, a DC power supply, a first switching cabinet, a second switching cabinet, a dynamometer driver, a dynamometer, a test bench and a tested mining motor speed regulator. The first power supply is an incoming power supply, which is connected to the transformer after passing through the first switch cabinet, and the transformer is connected to the second power supply after passing through the second switch cabinet. The second power supply outputs DC power after passing through the DC power supply; the input end of the first switching cabinet is connected to the first switch cabinet, the second switch cabinet and the DC power supply, and the output end is connected to the second switching cabinet. The second switching cabinet is connected to the mining battery in the safety test chamber, the first switching cabinet and the tested mining motor speed regulator. The second switching cabinet is connected to the mining battery in the safety test chamber through the flameproof terminal in the chamber. The DC power supply input is the second power supply, and the output is DC power with adjustable voltage. The DC power supply includes a mining battery discharge test function. The dynamometer driver and the dynamometer provide loads for the tested mining motor; the measurement and control system includes an electrical parameter detection system, a mechanical parameter detection system, a temperature protection system, a vibration protection system and a host computer.

2. The safety performance test device for the mining battery electric drive system according to claim 1 is characterized in that: The safety test chamber includes a flameproof terminal block, which connects the mining battery in the chamber and the second switching cabinet outside the chamber; the flameproof terminal block meets the explosion-proof requirements of mining electrical equipment.

3. The safety performance test device for the mining battery electric drive system according to claim 1 is characterized in that: The first switching cabinet is used for switching the first power supply, the second power supply and the DC power supply of the output circuit. The second switching cabinet includes five test conditions by combining with the first switching cabinet: In the first test condition, the output of the first switch cabinet is disconnected, and the second switch cabinet is connected to the mining battery in the safety test chamber and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the mining battery; and is used to test the tested mining battery, the tested mining motor speed regulator and the tested mining motor; In the second test condition, the first switch cabinet is connected to the DC power supply, the second switch cabinet is connected to the first switch cabinet and the tested mine motor speed regulator, and the mining battery in the safety test chamber is disconnected; the tested mine motor speed regulator is powered by the DC power supply; it is used to test the tested mine motor speed regulator and the tested mine motor; The third test condition is that the first switch cabinet is connected to the DC power supply, the second switch cabinet is connected to the mining battery in the safety test chamber and the first switch cabinet, and the speed regulator of the tested mining motor is disconnected; it is used to test the charging and discharging performance of the tested mining battery through the DC power supply; In the fourth test condition, the first switching cabinet is connected to the first power supply, and the second switching cabinet is connected to the first switching cabinet and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the first power supply; and is used to test the tested mining motor speed regulator and the tested mining motor; In the fifth test condition, the first switching cabinet is connected to the second power supply, and the second switching cabinet is connected to the first switching cabinet and the tested mining motor speed regulator; the tested mining motor speed regulator is powered by the second power supply; and is used to test the tested mining motor speed regulator and the tested mining motor.

4. The electrical parameter detection system according to claim 1, characterized in that: The electrical parameter detection system includes a first current sensor, a first voltage sensor, a second current sensor, a second voltage sensor and a first acquisition module. The first current sensor and the first voltage sensor detect the current and voltage at the input end of the motor speed regulator under test, the second current sensor and the second voltage sensor detect the current and voltage at the output end of the motor speed regulator under test, the first acquisition module collects data collected by the first current sensor, the first voltage sensor, the second current sensor and the second voltage sensor, and the first acquisition module is connected to a host computer and performs data exchange.

5. The mechanical parameter detection system according to claim 1, characterized in that: The mechanical parameter detection system includes a speed torque sensor and a second acquisition module; the speed torque sensor measures the speed and torque of the output shaft of the tested mining motor; the second acquisition module collects the data collected by the speed torque sensor; the second acquisition module is connected to the host computer and exchanges data.

6. The temperature protection system according to claim 1, characterized in that: The temperature protection system includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a third acquisition module; the first temperature sensor measures the temperature of the tested mining motor winding, the second temperature sensor measures the temperature of the bearing seat, and the third temperature sensor measures the winding temperature of the dynamometer; the third acquisition module collects the temperatures collected by the first temperature sensor, the second temperature sensor and the third temperature sensor; the third acquisition module is connected to the host computer and exchanges data.

7. The vibration protection system according to claim 1, characterized in that: The vibration protection system includes a first vibration sensor, a second vibration sensor, a third vibration sensor and a fourth acquisition module; the first vibration sensor is installed on the bearing seat base to measure the vibration of the bearing seat; the second vibration sensor is installed on the speed torque sensor base to measure the vibration of the speed torque sensor base; the third vibration sensor is installed on the platform to measure the vibration of the platform; the fourth acquisition module collects data collected by the first vibration sensor, the second vibration sensor and the third vibration sensor; the fourth acquisition module is connected to the host computer and exchanges data.

8. The host computer according to claim 1, characterized in that: The host computer is connected to a DC power supply, a dynamometer driver, a first acquisition module, a second acquisition module, a third acquisition module, and a fourth acquisition module; the DC power supply output power supply voltage and current are set by interacting with the DC power supply, and the dynamometer output speed and loading torque are set by interacting with the dynamometer driver; The input electric power of the tested mining motor speed regulator is obtained by calculating the data of the first current sensor and the first voltage sensor transmitted by the first acquisition module, and the output electric power of the tested mining motor speed regulator is obtained by calculating the data of the second current sensor and the second voltage sensor; the mechanical power of the tested mining motor is obtained by calculating the speed and torque data transmitted by the second acquisition module, the test device is protected from over-temperature by the temperature data transmitted by the third acquisition module, and the test device is protected from vibration over-limit by the vibration data transmitted by the fourth acquisition module.

9. The safety performance test device for the mining battery electric drive system according to claim 1 is characterized in that: The test bench includes a platform and a dynamometer base, a sensor base, a first coupling, a bearing seat, a bearing seat base, a second coupling, a first tested mining motor bracket and a second tested mining motor bracket installed on the platform, the first tested mining motor bracket is used to connect a flange-type mining motor, and the second tested mining motor bracket is used to connect a base-type motor, wherein the first tested mining motor bracket includes a machine shaft fixing part and a flange-type fixing part, the second tested mining motor bracket includes a table plate and a base connecting plate, the flange-type fixing part is fixedly installed on the platform, the machine shaft fixing part is arranged at the center of the flange-type fixing part, and is used to connect the power shaft of the first tested mining motor / the second tested mining motor, the table plate is installed on the platform so as to be displaceable in the front-back direction and the height direction, the base connecting plate is symmetrically arranged on the top of the table plate in the left-right direction, and the distance between the two base connecting plates is adjustable.

10. The safety performance test device for the mining battery electric drive system according to claim 9, characterized in that: The flange-type fixing component includes a disc body portion and a bolt connection hole opened on the disc body portion, and the machine shaft fixing component includes a connecting shaft and a shaft clamping block. The connecting shaft is rotatably passed through the center of the disc body portion, and a plurality of shaft clamping blocks are centrally symmetrically arranged at the end of the connecting shaft. The shaft clamping block clamps the power shaft of the first test motor / the second test motor by displacing inward, and the other end of the connecting shaft is connected to the second coupling.

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