Permanent magnet brake torque load curve detection platform

Abstract

The invention discloses a permanent magnet brake torque load curve detection platform, and relates to the technical field of permanent magnet brake torque detection. The detection platform comprises a bottom plate, two sets of supports are sequentially arranged on the bottom plate, a transmission shaft is rotationally installed on the two sets of supports through bearings, one end of the transmission shaft is connected with a servo motor, a brake is installed at the other end of the transmission shaft, a cam is arranged on the transmission shaft, and a reciprocating plate is installed on the outer side of the cam. A heating cover is installed on the outer side of the reciprocating plate, a clamp is installed on one side of the brake, and an air blowing cover is installed on the outer side of the brake. The cam, the reciprocating plate and the heating cover are matched to convey high-temperature or low-temperature air into the air blowing cover, the clamp positions the brake, and the air blowing cover sprays the low-temperature air or the high-temperature air onto the brake, so that the temperature of the brake is rapidly increased or decreased, different detection environments are simulated, and the detection precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet brake torque detection, in particular to a permanent magnet brake torque load curve detection platform. Background Art

[0002] ‌‌Permanent magnet brake‌ is a device that uses magnetic field to generate braking force. Its working principle is to achieve braking effect through the force generated by magnetic field. Permanent magnet brake works in the power-off state and can achieve functions such as holding, positioning and emergency braking. It is safe, reliable and has no residual torque.‌

[0003] The performance of permanent magnet brakes is closely related to equipment safety. With the continuous expansion of application areas, higher requirements are placed on the reliability and environmental adaptability of permanent magnet brakes. Therefore, it is necessary to consider the performance and output torque changes of permanent magnet brakes in different environments.

[0004] The existing technology for testing permanent magnet brakes mainly places the permanent magnet brake in an oven, heats it to a set temperature, and then takes it out and installs it for testing. This processing method is time-consuming and labor-intensive, and the test results are not accurate, which can hardly meet current testing needs. Summary of the invention

[0005] The purpose of the present invention is to provide a permanent magnet brake torque load curve detection platform to solve the problems raised in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a permanent magnet brake torque load curve detection platform, comprising a bottom plate, two groups of brackets are sequentially arranged on the bottom plate, a transmission shaft is rotatably mounted on the two groups of brackets through bearings, a servo motor is connected to one end of the transmission shaft, a brake is installed on the other end of the transmission shaft, a cam is arranged on the transmission shaft, a reciprocating plate is installed on the outer side of the cam, a heating hood is installed on the outer side of the reciprocating plate, a clamp is installed on one side of the brake, and a blowing hood is installed on the outer side of the brake; The cam, the reciprocating plate and the heating cover cooperate to deliver air into the blowing cover, and the clamp positions the brake.

[0007] The heating cover is installed on the bottom plate, the interior of the heating cover is hollow, a sleeve is arranged inside the heating cover, a coil is arranged between the heating cover and the sleeve, and two ends of the coil are electrically connected to the control system through wires; The cam is located in the heating cover, and a plurality of cavities are arranged on the cam. A sliding plate is slidably installed in the cavity. A nylon plate and a metal block are respectively arranged on both sides of the sliding plate. The metal block is located in the cavity and in the magnetic field of the coil. A heat-conducting medium is arranged between the metal block and the cam, and the heat-conducting medium is made of a material that expands when heated. A first spring is connected between the metal block and the cam, and the first spring is located in the cavity.

[0008] In order to meet the detection requirements of brakes of different types or sizes, the control system flexibly adjusts the air intake volume of the intake pipe to quickly heat or cool the brake, thereby quickly meeting the required detection environment requirements; the control system connects both ends of the coil to the circuit, the coil generates an alternating magnetic field, and the metal block is located in the alternating magnetic field of the coil. The metal block cuts the magnetic lines of force in the magnetic field of the coil, and current is generated in the metal block and heat is generated. The metal block conducts the heat to the heat-conducting medium, and the heat-conducting medium expands after absorbing the heat. The heat-conducting medium pushes the sliding plate outward and stretches the first spring, and the metal block and the nylon plate move outward with the sliding plate.

[0009] After the nylon plate moves outward, the servo motor drives the cam to rotate through the transmission shaft, and the cam drives the sliding plate to rotate, and the nylon plate on the sliding plate moves outward accordingly; When the nylon plate approaches the reciprocating plate, the control system opens the solenoid valve in the air outlet pipe, closes the solenoid valve in the air intake pipe and closes the solenoid valves in the two exhaust pipes according to the encoder data in the servo motor, and the nylon plate pushes the reciprocating plate to move and compresses the second spring. The nylon plate pushes the reciprocating plate to enter the fixed cover to a greater distance, so that more air in the fixed cover is transported to the eardrum through the air outlet pipe, thereby allowing more air to enter the eardrum; As the transmission shaft continues to drive the sliding plate to rotate, the transmission shaft drives the nylon plate away from the reciprocating plate through the sliding plate. The control system opens the solenoid valve in the intake pipe, closes the solenoid valve in the outlet pipe, and closes the solenoid valves in the two sets of exhaust pipes according to the data of the encoder in the servo motor. The second spring is released, and the second spring pushes the reciprocating plate to move further outward from the fixed cover. At this time, external air is sucked into the chamber between the reciprocating plate and the fixed cover through the intake pipe, thereby realizing the suction of external gas for subsequent processing.

[0010] The sleeve is located on the right side of the heating hood, and a plurality of fixed hoods are arranged in the sleeve, and the interiors of the plurality of fixed hoods are hollow. A plurality of reciprocating plates are arranged, and the plurality of reciprocating plates are respectively slidably installed in the plurality of fixed hoods. A second spring is connected between the reciprocating plate and the fixed hood, and the plurality of reciprocating plates are respectively in contact with the nylon plates. A heating wire is arranged on the inner wall of the fixed hood, and the heating wire is electrically connected to the control system.

[0011] A plurality of sliding grooves are arranged on the inner wall of the left heating cover, and a partition is slidably installed in the plurality of sliding grooves, a sealing connection is formed between the middle of the partition and the transmission shaft, the partition is located on one side of the cam, a tympanum is connected between the partition and the heating cover, the cross section of the tympanum is cylindrical, a plurality of folds are arranged on the tympanum, and a plurality of heating plates and cooling plates are arranged in sequence on the inner wall of the heating cover opposite to the tympanum; A third spring is connected between the partition and the heating cover. The third spring is sleeved on the transmission shaft and is electrically connected to the control system.

[0012] When it is necessary to adjust the heating effect or cooling effect during the detection process, the third spring can be energized through the control system, and a mutually attractive magnetic field is generated between each turn of the third spring. The magnetic field shortens the third spring as a whole, and the third spring pulls the partition to move to the left. The partition pushes the eardrum to gradually become wrinkled. At this time, the contact area between the eardrum and the refrigeration plate or the heating plate is reduced, which changes the cooling effect of the heating plate and the cooling plate through the eardrum, thereby realizing the adjustment of the cooling effect and the heating effect to meet different usage requirements.

[0013] The fixed cover is connected to the outside air through an air inlet pipe passing through the sleeve and the heating cover, and the fixed cover is connected to the inside of the eardrum through an air outlet pipe passing through the partition, and the air inlet pipe and the air outlet pipe are both connected to an exhaust pipe; The blowing hood is composed of two groups of cylinders that are engaged with each other. The interior of the cylinder is hollow, and an air jet and an exhaust port are provided in the cylinder. The exhaust port is located on one side of the air jet. A switch valve is installed in the exhaust port. The switch valve is electrically connected to the control system. Several of the air jets pass through the heating hood and are connected to the interior of the tympanic membrane via connecting pipes.

[0014] The air inlet pipe, the connecting pipe, the air outlet pipe and the exhaust pipe are all installed with electromagnetic valves, flow meters and pressure sensors, and the electromagnetic valves, flow meters and pressure sensors are electrically connected to the control system.

[0015] A limit plate is provided at the bottom of the clamp, and the bottom of the limit plate slides on the bottom plate through a guide rail and a slider, the guide rail is installed on the bottom plate, the slider is installed on the limit plate, the guide rail and the slider are slidably connected, the limit plate is connected to the telescopic rod of the transverse electric cylinder, and the transverse electric cylinder is installed on the bottom plate; The cylinder is connected with a telescopic rod of a longitudinal electric cylinder, and the longitudinal electric cylinder is installed on a limiting plate.

[0016] The heating plate and the cooling plate are both provided with semiconductors of two different materials and a metal plate, one end of the semiconductors of the two different materials are connected to the metal plate, and the two semiconductors on the heating plate and the cooling plate are respectively electrically connected to the control system through wires.

[0017] Temperature sensors are installed on the inner wall of the fixed cover and on the eardrum, and the temperature sensors are electrically connected to the control system. The temperature sensor on the fixed cover is used to monitor the initial temperature of the air, and the temperature sensor on the eardrum is used to monitor the final temperature of the air. The servo motor is equipped with an encoder, a pressure sensor and a torque sensor.

[0018] The bottom plate is provided with a control panel, and a control system is provided inside the control panel.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. It can simulate the low-temperature and high-temperature environments of the brake and improve the accuracy of detection. The two semiconductors and metal plates on the heating plate are the heating end of the Peltier effect, and the two semiconductors and metal plates on the cooling plate are the cooling end of the Peltier effect. The eardrum is cooled or heated by the cooling end or the heating end, and the eardrum cools or heats the air inside to the set temperature; the air with a temperature rise or fall is transported to the jet port through the connecting pipe, and sprayed on the brake through the jet port, so that the brake quickly reaches the required detection temperature, which can truly simulate the high or low temperature environment when the brake is working normally, ensuring the accuracy of the detection data.

[0020] 2. The heating effect or cooling effect is designed to be adjustable to meet different testing requirements. The third spring is energized through the control system, and a mutually attractive magnetic field is generated between each turn of the third spring. This magnetic field shortens the third spring as a whole, and the third spring pulls the partition to move to the left. The partition pushes the eardrum to gradually become wrinkled. At this time, the contact area between the eardrum and the cooling plate or heating plate is reduced, so that the cooling effect of the heating plate and the cooling plate through the eardrum changes, and the cooling effect and heating effect are adjusted to meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure after removing the servo motor, bracket, base plate, brake, clamp, limit plate and heating cover on the left side; Figure 3 yes Figure 2 A longitudinal cross-sectional view after removing the eardrum, the third spring, the partition plate and the connecting tube; Figure 4 yes Figure 3 A partial enlarged view of the middle A area; Figure 5 yes Figure 1 Schematic diagram of the structure after removing the servo motor, bracket, base plate, brake, clamp, limit plate and heating cover on the right side; Figure 6 yes Figure 5 Schematic diagram of the internal structure of the heating hood.

[0022] In the figure: 1. control panel; 11. bottom plate; 111. bracket; 12. horizontal electric cylinder; 13. longitudinal electric cylinder; 14. limit plate; 2. servo motor; 21. transmission shaft; 211. cam; 212. reciprocating plate; 213. sliding plate; 22. fixture; 23. brake; 24. heating hood; 241. sleeve; 242. coil; 243. fixed hood; 244. partition; 245. eardrum; 246. third spring; 247. heating plate; 248. cooling plate; 25. blowing hood; 251. jet nozzle; 26. air inlet pipe; 261. connecting pipe; 262. air outlet pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] Example: Figure 1-Figure 6 As shown, the present invention provides a technical solution of a permanent magnet brake torque load curve detection platform, including a bottom plate 11, two groups of brackets 111 are sequentially arranged on the bottom plate 11, a transmission shaft 21 is rotatably mounted on the two groups of brackets 111 through bearings, one end of the transmission shaft 21 is connected to a servo motor 2, a brake 23 is installed at the other end of the transmission shaft 21, a cam 211 is arranged on the transmission shaft 21, a reciprocating plate 212 is installed on the outer side of the cam 211, a heating cover 24 is installed on the outer side of the reciprocating plate 212, a clamp 22 is installed on one side of the brake 23, and a blowing cover 25 is installed on the outer side of the brake 23. The cam 211, the reciprocating plate 212 and the heating hood 24 cooperate to deliver air (low-temperature air or high-temperature air) to the blowing hood 25. The clamp 22 positions the brake 23. A limit plate 14 is arranged at the bottom of the clamp 22. The bottom of the limit plate 14 slides on the bottom plate 11 through a guide rail and a slider. The guide rail is installed on the bottom plate 11. The slider is installed on the limit plate 14. The guide rail and the slider are slidably connected. The limit plate 14 is connected to the telescopic rod of the transverse electric cylinder 12. The transverse electric cylinder 12 is installed on the bottom plate 11. A control panel 1 is arranged on the bottom plate 11. A control system is arranged in the control panel 1.

[0025] The heating cover 24 is installed on the base plate 11. The interior of the heating cover 24 is hollow. A sleeve 241 is provided inside the heating cover 24. A coil 242 is provided between the heating cover 24 and the sleeve 241. Both ends of the coil 242 are electrically connected to the control system through wires. The cam 211 is located in the heating cover 24. A plurality of cavities are provided on the cam 211. A sliding plate 213 is slidably installed in the cavity. A nylon plate and a metal block are provided on both sides of the sliding plate 213. The metal block is located in the cavity and in the magnetic field of the coil 242. A heat-conducting medium is provided between the metal block and the cam 211. The heat-conducting medium is made of a material that expands when heated. A first spring is connected between the metal block and the cam 211. The first spring is located in the cavity.

[0026] The sleeve 241 is located on the right side of the heating cover 24. A plurality of fixed covers 243 are arranged in the sleeve 241. The interior of the plurality of fixed covers 243 is hollow. A plurality of reciprocating plates 212 are arranged. The plurality of reciprocating plates 212 are respectively slidably installed in the plurality of fixed covers 243. A second spring is connected between the reciprocating plates 212 and the fixed covers 243. The plurality of reciprocating plates 212 are respectively in contact with the nylon plates. A heating wire is arranged on the inner wall of the fixed cover 243. The heating wire is electrically connected to the control system. A plurality of sliding grooves are arranged on the inner wall of the left heating cover 24. The plurality of sliding grooves are provided with a plurality of sliding grooves. A partition 244 is slidably installed, and a sealing connection is formed between the middle part of the partition 244 and the transmission shaft 21. The partition 244 is located on one side of the cam 211. A tympanum 245 is connected between the partition 244 and the heating cover 24. The cross section of the tympanum 245 is cylindrical, and a plurality of folds are arranged on the tympanum 245. A plurality of heating plates 247 and cooling plates 248 are arranged in sequence on the inner wall of the heating cover 24 opposite to the tympanum 245. A third spring 246 is connected between the partition 244 and the heating cover 24. The third spring 246 is sleeved on the transmission shaft 21 and is electrically connected to the control system.

[0027] In order to meet the detection requirements of different types of brakes 23, the control system flexibly adjusts the intake volume of the intake pipe 26, so that the brake 23 can be quickly heated or cooled, thereby quickly meeting the required detection environment requirements; the control system connects the two ends of the coil 242 to the circuit, the coil 242 generates an alternating magnetic field, and the metal block is located in the alternating magnetic field of the coil 242. The metal block cuts the magnetic flux lines in the magnetic field of the coil 242, and current is generated in the metal block and heat is generated. The metal block conducts the heat to the heat-conducting medium, and the heat-conducting medium expands after absorbing the heat. The heat-conducting medium pushes the sliding plate 213 in the cavity to move outward (radially outward) and stretch the first spring, and the metal block (not shown in the figure) and the nylon plate (not shown in the figure) move outward with the sliding plate 213.

[0028] After the nylon plate moves outward, the servo motor 2 drives the cam 211 to rotate through the transmission shaft 21, and the cam 211 drives the sliding plate 213 to rotate, and the nylon plate on the sliding plate 213 moves outward accordingly; When the nylon plate approaches the reciprocating plate 212, the control system opens the solenoid valve in the outlet pipe 262, closes the solenoid valve in the inlet pipe 26, and closes the solenoid valves in the two exhaust pipes (the exhaust pipes connected to the inlet pipe 26 and the outlet pipe 262) according to the encoder data in the servo motor 2, and the nylon plate pushes the reciprocating plate 212 to move and compress the second spring, and the nylon plate pushes the reciprocating plate 212 to enter the fixed cover 243. The distance is increased, so that more air in the fixed cover 243 is transported to the eardrum 245 through the outlet pipe 262, and more air enters the eardrum 245, so that the air intake amount of the eardrum 245 increases; As the transmission shaft 21 continues to drive the sliding plate 213 to rotate, the transmission shaft 21 drives the nylon plate away from the reciprocating plate 212 through the sliding plate 213. The control system opens the solenoid valve in the air inlet pipe 26, closes the solenoid valve in the air outlet pipe 262, and closes the solenoid valves in the two sets of exhaust pipes (the exhaust pipes connected by the air inlet pipe 26 and the air outlet pipe 262) according to the data of the encoder in the servo motor 2. The second spring is released, and the second spring pushes the reciprocating plate 212 to move further outward from the fixed cover 243. At this time, the external air is sucked into the chamber between the reciprocating plate 212 and the fixed cover 243 through the air inlet pipe 26, thereby realizing the inhalation of external gas, and at this time, more external air is inhaled.

[0029] The heating plate 247 and the cooling plate 248 are both provided with semiconductors of two different materials and a metal plate, and one end of the semiconductors of the two different materials are connected to the metal plate. The two semiconductors on the heating plate 247 and the cooling plate 248 are electrically connected to the control system through wires respectively; temperature sensors are installed on the inner wall of the fixed cover 243 and on the eardrum 245, and the temperature sensors are electrically connected to the control system. The temperature sensor on the fixed cover 243 is used to monitor the initial temperature of the air, and the temperature sensor on the eardrum 245 is used to monitor the final temperature of the air. The servo motor 2 has a built-in encoder, a pressure sensor and a torque sensor.

[0030] When it is necessary to adjust the heating effect or cooling effect during the detection process, the third spring 246 can be energized through the control system, and a mutually attractive magnetic field is generated between each turn of the third spring 246. The magnetic field shortens the third spring 246 as a whole, and the third spring 246 pulls the partition 244 to move to the left. The partition 244 pushes the eardrum 245 to gradually become wrinkled. At this time, the contact area between the eardrum 245 and the refrigeration plate 248 or the heating plate 247 is reduced, so that the cooling effect of the heating plate 247 and the refrigeration plate 248 through the eardrum 245 changes, thereby realizing the adjustment of the cooling effect and the heating effect to meet different usage requirements.

[0031] The fixed cover 243 passes through the sleeve 241 and the heating cover 24 through the air inlet pipe 26 to communicate with the external air. The fixed cover 243 passes through the partition 244 through the air outlet pipe 262 to communicate with the inside of the tympanic membrane 245. The air inlet pipe 26 and the air outlet pipe 262 are both connected with exhaust pipes. The blowing cover 25 is composed of two groups of cylinders that are mutually engaged. The inside of the cylinder is hollow. The cylinder is connected with the telescopic rod of the longitudinal electric cylinder 13. The longitudinal electric cylinder 13 is installed on the limit plate 14. The cylinder is provided with an air jet 251 and an exhaust port. The exhaust port is located on one side of the air jet 251. A switch valve is installed in the exhaust port. The switch valve is electrically connected to the control system. Several air jets 251 pass through the heating cover 24 and communicate with the inside of the tympanic membrane 245 through the connecting pipe 261. Solenoid valves, flow meters and pressure sensors are installed in the air inlet pipe 26, the connecting pipe 261, the air outlet pipe 262 and the exhaust pipe. The solenoid valves, flow meters and pressure sensors are electrically connected to the control system.

[0032] Working principle: Press the start button on the control panel 1, the detection platform starts, and the brake 23 is installed on the fixture 22. The horizontal electric cylinder 12 drives the limit plate 14 to move to the left, the limit plate 14 drives the fixture 22 to move to the left, and the fixture 22 drives the brake 23 to move to the left, so that the brake 23 and the transmission shaft 21 are connected to each other; the longitudinal electric cylinder 13 drives the cylinder to move to one side of the brake 23, so that the cylinders on both sides are engaged with each other to seal the brake 23, and the control system controls the solenoid valves in the two groups of exhaust pipes (the following two groups of exhaust pipes refer to the exhaust pipes connected by the inlet pipe 26 and the outlet pipe 262) to open, so that the chamber between the reciprocating plate 212 and the fixed cover 243 is connected to the external air through the exhaust pipe, and the servo motor 2 drives the transmission shaft 21 to rotate. The pressure sensor and torque sensor in the servo motor 2 monitor the torque of the brake 23 and feed back the data to the control system. The control system then calculates the torque load curve of the brake 23 to achieve the required detection of the brake 23.

[0033] When the temperature of the brake 23 detection environment needs to be adjusted, the control system drives the transmission shaft 21 to rotate through the servo motor 2, and the transmission shaft 21 drives the cam 211 to rotate. The encoder in the servo motor 2 feeds back the rotation data of the cam 211 to the control system, and the cam 211 drives the sliding plate 213 and the nylon plate to rotate accordingly; When the nylon plate on the cam 211 moves away from the reciprocating plate 212, the control system opens the solenoid valve in the intake pipe 26, closes the solenoid valve in the outlet pipe 262, closes the solenoid valves in the two sets of exhaust pipes, and connects the heating wire to the circuit according to the data of the encoder in the servo motor 2. The second spring is released, and the second spring pushes the reciprocating plate 212 to move inward, so that the chamber between the reciprocating plate 212 and the fixed cover 243 becomes larger, and the outside air enters the chamber between the reciprocating plate 212 and the fixed cover 243 through the intake pipe 26, thereby extracting the outside air so that the air can be used to change the detection environment temperature of the brake 23.

[0034] As the cam 211 continues to rotate, when the nylon plate on the cam 211 approaches the reciprocating plate 212, the control system closes the solenoid valve in the intake pipe 26, opens the solenoid valve in the outlet pipe 262, and closes the solenoid valves in the two sets of exhaust pipes according to the data of the encoder in the servo motor 2. The servo motor 2 synchronously drives the cam 211 to rotate through the transmission shaft 21. The cam 211 pushes the reciprocating plate 212 to move outward through the sliding plate 213 and the nylon plate. The reciprocating plate 212 synchronously compresses the second spring. The reciprocating plate 212 squeezes the air in the fixed cover 243 outward, so that the air in the fixed cover 243 is compressed and then transported from the outlet pipe 262 to the eardrum 245, thereby realizing the initial pressurization and transportation of external air.

[0035] During the process of external air being transported to the eardrum 245, the flow meter in the air outlet pipe 262 feeds back data to the control system; if it is necessary to spray high-temperature air on the brake 23, the control system connects the heating wire and the two semiconductors on the heating plate 247 to the circuit, and preheats the air between the reciprocating plate 212 and the fixed cover 243 through the heating wire, and the preheated air is transported to the eardrum 245 through the air outlet pipe 262; the two semiconductors and the metal plate on the heating plate 247 are the heating ends of the Peltier effect, and the eardrum 245 is heated by the heating end, and the eardrum 245 heats the internal air, so that the temperature of the preheated air rises to the set temperature. Through the design of preheating and reheating, the air can be heated to the set temperature faster to improve the detection efficiency; If it is necessary to spray low-temperature air on the brake 23, the control system will cut off the power of the heating wire, so that the air between the reciprocating plate 212 and the fixed cover 243 is at room temperature, and the two semiconductors on the cooling plate 248 are connected to the circuit and the two semiconductors on the heating plate 247 are cut off. The two semiconductors and the metal plate on the cooling plate 248 are the cooling ends of the Peltier effect, and the eardrum 245 is cooled by the cooling end, and the eardrum 245 cools the internal air to the set temperature; When the data of the flow meter in the connecting pipe 261 changes, the control system controls the solenoid valve in the connecting pipe 261 to open and the switch valve in the exhaust port to open, and the air after the temperature rises or drops is transported to the jet port 251 through the connecting pipe 261, and is sprayed on the brake 23 through the jet port 251, so that the brake 23 quickly reaches the required detection temperature, which can truly simulate the high temperature or low temperature environment when the brake 23 is working normally, ensuring the accuracy of the detection data; the high-temperature gas or low-temperature gas sprayed by the blowing hood 25 contacts the brake 23 and is discharged from the exhaust port. The staff can also connect the exhaust port and the air inlet pipe 26 through a pipeline, so that the low-temperature air or high-temperature air discharged from the exhaust port is used for heating or cooling the brake 23, thereby reducing the energy consumption of the detection platform and realizing the utilization of the exhaust gas.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A permanent magnet brake torque load curve detection platform, characterized in that: The detection platform comprises a bottom plate (11), two groups of brackets (111) are sequentially arranged on the bottom plate (11), a transmission shaft (21) is rotatably mounted on the two groups of brackets (111) via bearings, one end of the transmission shaft (21) is connected to a servo motor (2), the other end of the transmission shaft (21) is mounted with a brake (23), a cam (211) is arranged on the transmission shaft (21), a reciprocating plate (212) is mounted on the outer side of the cam (211), a heating cover (24) is mounted on the outer side of the reciprocating plate (212), a clamp (22) is mounted on one side of the brake (23), and a blowing cover (25) is mounted on the outer side of the brake (23); The cam (211), the reciprocating plate (212) and the heating hood (24) cooperate to deliver air into the blowing hood (25), and the clamp (22) positions the brake (23).

2. A permanent magnet brake torque load curve detection platform according to claim 1, characterized in that: The heating cover (24) is mounted on the bottom plate (11); the interior of the heating cover (24) is hollow; a sleeve (241) is sleeved inside the heating cover (24); a coil (242) is arranged between the heating cover (24) and the sleeve (241); and two ends of the coil (242) are electrically connected to a control system via a wire; The cam (211) is located in the heating cover (24); a plurality of cavities are provided on the cam (211); a sliding plate (213) is slidably installed in the cavity; a nylon plate and a metal block are provided on both sides of the sliding plate (213); the metal block is located in the cavity and in the magnetic field of the coil (242); a heat-conducting medium is provided between the metal block and the cam (211); the heat-conducting medium is made of a material that expands when heated; a first spring is connected between the metal block and the cam (211); the first spring is located in the cavity.

3. A permanent magnet brake torque load curve detection platform according to claim 2, characterized in that: The sleeve (241) is located on the right side of the heating cover (24), and a plurality of fixed covers (243) are arranged in the sleeve (241), and the interior of the plurality of fixed covers (243) is hollow. A plurality of reciprocating plates (212) are arranged, and the plurality of reciprocating plates (212) are respectively slidably installed in the plurality of fixed covers (243). A second spring is connected between the reciprocating plates (212) and the fixed covers (243), and the plurality of reciprocating plates (212) are respectively in contact with nylon plates. A heating wire is arranged on the inner wall of the fixed cover (243), and the heating wire is electrically connected to a control system.

4. A permanent magnet brake torque load curve detection platform according to claim 3, characterized in that: A plurality of sliding grooves are arranged on the inner wall of the left heating cover (24), and a partition (244) is slidably installed in the plurality of sliding grooves. A sealing connection is formed between the middle of the partition (244) and the transmission shaft (21). The partition (244) is located on one side of the cam (211). A tympanum (245) is connected between the partition (244) and the heating cover (24). The cross section of the tympanum (245) is cylindrical. The tympanum (245) is provided with a plurality of folds. A plurality of heating plates (247) and cooling plates (248) are sequentially arranged on the inner wall of the heating cover (24) opposite to the tympanum (245); A third spring (246) is connected between the partition plate (244) and the heating cover (24); the third spring (246) is sleeved on the transmission shaft (21) and is electrically connected to the control system.

5. A permanent magnet brake torque load curve detection platform according to claim 4, characterized in that: The fixed cover (243) is connected to the outside air through the air inlet pipe (26) passing through the sleeve (241) and the heating cover (24); the fixed cover (243) is connected to the inside of the eardrum (245) through the air outlet pipe (262) passing through the partition (244); and the air inlet pipe (26) and the air outlet pipe (262) are both connected to an exhaust pipe; The blowing hood (25) is composed of two groups of cylinders that are engaged with each other. The interior of the cylinder is hollow. An air jet (251) and an exhaust port are arranged in the cylinder. The exhaust port is located on one side of the air jet (251). A switch valve is installed in the exhaust port. The switch valve is electrically connected to the control system. A plurality of the air jets (251) pass through the heating hood (24) through a connecting pipe (261) and are connected to the interior of the eardrum (245).

6. A permanent magnet brake torque load curve detection platform according to claim 5, characterized in that: The air inlet pipe (26), the connecting pipe (261), the air outlet pipe (262) and the exhaust pipe are all installed with a solenoid valve, a flow meter and a pressure sensor, and the solenoid valve, the flow meter and the pressure sensor are electrically connected to the control system.

7. A permanent magnet brake torque load curve detection platform according to claim 6, characterized in that: A limit plate (14) is provided at the bottom of the clamp (22); the bottom of the limit plate (14) slides on the bottom plate (11) via a guide rail and a slider; the guide rail is mounted on the bottom plate (11); the slider is mounted on the limit plate (14); the guide rail and the slider are slidably connected; the limit plate (14) is connected to a telescopic rod of a transverse electric cylinder (12); and the transverse electric cylinder (12) is mounted on the bottom plate (11); The cylinder is connected to a telescopic rod of a longitudinal electric cylinder (13), and the longitudinal electric cylinder (13) is mounted on a limiting plate (14).

8. The permanent magnet brake torque load curve detection platform according to claim 7, characterized in that: The heating plate (247) and the cooling plate (248) are both provided with semiconductors of two different materials and a metal plate, one end of the semiconductors of the two different materials are connected to the metal plate, and the two semiconductors on the heating plate (247) and the cooling plate (248) are respectively electrically connected to the control system via wires.

9. A permanent magnet brake torque load curve detection platform according to claim 8, characterized in that: Temperature sensors are installed on the inner wall of the fixed cover (243) and the eardrum (245), and the temperature sensors are electrically connected to the control system. The servo motor (2) is equipped with an encoder, a pressure sensor, and a torque sensor.

10. A permanent magnet brake torque load curve detection platform according to claim 9, characterized in that: A control panel (1) is provided on the bottom plate (11), and a control system is provided inside the control panel (1).

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