Torque test bench with load self-adjusting function for generator set maintenance

Abstract

The invention discloses a torque test bench with a load self-adjusting function for generator set maintenance, and relates to the technical field of torque testing. Comprising a test bench, a transverse sliding plate is installed on the test bench, a generator set is installed on the transverse sliding plate, a cleaning cylinder is installed on one side of the generator set, a detection cylinder is installed on one side of the cleaning cylinder, a first detection plate and a second detection plate are sequentially installed in the detection cylinder, and a detection wire is installed between the first detection plate and the second detection plate. The first detection plate and the second detection plate are both provided with magnetic materials, the temperature is suddenly reduced through magnetic moment disordering in the magnetic materials, the interior of the detection cylinder is cooled in time, cooling air is formed at the refrigeration end, the interior of the detection cylinder is rapidly cooled, and the detection efficiency is improved. The first detection plate, the second detection plate and the detection wire cooperate with each other to form a detection assembly replacing a sensor, thereby achieving the torque test of the generator set, and achieving the effect of carrying out the torque test on the generator set through employing the sensor.

Description

Technical Field

[0001] The invention relates to the technical field of torque testing, in particular to a torque testing platform for generator set maintenance with a load self-regulation function. Background Art

[0002] As a core component of mechanical equipment, the operating status of a generator set directly impacts its overall performance and safety. The quality of a generator set is primarily tested using a torque test bench. This test bench is primarily used to measure dynamic parameters such as torque and speed in rotating machinery. Its core component is a mechanical sensor or intelligent sensor, which converts mechanical torque into a measurable electrical signal. Traditional detection methods rely primarily on manual judgment or basic parameter monitoring, resulting in low diagnostic efficiency and insufficient accuracy.

[0003] Therefore, the existing generator torque test bench has the following main problems: (1) the output shaft of the generator set is not cleaned before the test, resulting in inaccurate test results; (2) the detection components are not cooled down in time and work for a long time, resulting in a shortened service life. Summary of the Invention

[0004] The object of the present invention is to provide a torque test bench for generator set maintenance with a load self-regulation function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a torque test bench for generator set maintenance with load self-regulation function, comprising a test bench, a transverse slide installed on the test bench, a generator set installed on the transverse slide, a cleaning cylinder installed on one side of the generator set, a detection cylinder installed on one side of the cleaning cylinder, a coupling and a brake installed in sequence on one side of the detection cylinder, a brush cylinder installed in the cleaning cylinder, a first detection plate and a second detection plate installed in sequence in the detection cylinder, and a detection wire installed between the first detection plate and the second detection plate.

[0006] Two groups of first transverse plates are respectively provided at both ends of one side of the first detection plate, with each group having two first transverse plates. Two second transverse plates are respectively provided at both ends of one side of the second detection plate, and the second transverse plates are located between the two groups of first transverse plates. Detection wires are connected between the second transverse plates and the two groups of first transverse plates. A piezoelectric ceramic plate is provided on the second transverse plate, and the piezoelectric ceramic plate is connected to the detection wire. The piezoelectric ceramic plate is made of piezoelectric ceramic material, and the detection wire is elastic. The piezoelectric ceramic plate is electrically connected to the control system through two sets of electric slip rings. The two sets of electric slip rings are located on both sides of the detection cylinder. The two sets of electric slip rings are installed on the test bench through a support frame. The support frame is set on the test bench.

[0007] The first detection plate and the second detection plate are both provided with magnetic materials, and a first coil is embedded in the detection cylinder outside the magnetic materials, and both ends of the first coil are electrically connected to the control system; A plurality of groups of protrusions are provided on the outer side of the first detection plate, and a plurality of groups of idler wheels are respectively connected to the inner wall of the detection cylinder through a plurality of groups of telescopic shafts. The telescopic shaft is provided on the detection cylinder, and the idler wheel and the telescopic shaft form a rotational connection. The telescopic shaft is a telescopic structure, and a reset spring is sleeved on the telescopic shaft. The two ends of the reset spring abut against the detection cylinder and the idler wheel, and the protrusions on the outer side of the first detection plate abut against the plurality of idler wheels.

[0008] A hose is provided on the inner wall of the detection cylinder, and the hose is located outside the plurality of idler pulleys, and the idler pulley outside the first detection plate is in contact with the hose; The hose is elastic and has several diaphragms arranged inside it, which divide the hose into several first chambers. The hose is provided with several air inlets and air outlets, which are respectively connected to the several first chambers. The air inlet passes through the detection cylinder through a pipeline and is connected to the outside air. A one-way valve and a flow meter are installed in the air inlet and the air outlet, and the one-way valve and the flow meter are electrically connected to the control system.

[0009] A temperature control wire is provided on the detection cylinder opposite to the hose. The temperature control wire is composed of a metal wire and two adjustment wires made of different semiconductor materials. One end of the two adjustment wires made of different semiconductor materials is connected to the metal wire, and the two adjustment wires made of different semiconductor materials are electrically connected to the control system.

[0010] The interior of the cleaning cylinder is hollow, the brush cylinder and the cleaning cylinder are connected in a rotating seal, a rotating chamber is formed between the outer side of the brush cylinder and the inner side of the cleaning cylinder, the outer side of the brush cylinder is provided with blades, the inner side of the brush cylinder is provided with a plurality of brushes, the interior of the brush is hollow, and a flow channel is provided on the brush cylinder, and the two ends of the flow channel are respectively connected to the plurality of brushes and the rotating chamber; The cleaning cylinder and the brush cylinder are both penetrated by a cleaning hole. The cleaning cylinder is provided with a liquid inlet, which is connected to a pressurizing system installed on a test bench for delivering aerosol or air.

[0011] A second coil is embedded in the cleaning cylinder and electrically connected to the control system. Metal material is provided in the blade and is within the magnetic field of the second coil. A temperature sensor is provided on the cleaning cylinder and electrically connected to the control system.

[0012] A lifting plate is installed under the transverse slide, the bottom of the lifting plate is connected to the telescopic rod of the longitudinal electric cylinder, the longitudinal electric cylinder is installed on the test bench, a guide rail is provided on the lifting plate, the transverse slide is slidably connected to the guide rail, the transverse slide is connected to the transverse electric cylinder, and the transverse electric cylinder is installed on the lifting plate.

[0013] The test bench is provided with a bracket, a centering electric cylinder is installed on the bracket, a drive motor is installed on the telescopic rod of the centering electric cylinder, and the output shaft of the drive motor is connected to the cleaning cylinder; The brake is installed on a test bench and is a magnetic powder brake.

[0014] Multiple groups of clamping electric cylinders are installed in the middle of the first detection plate and the second detection plate, and clamping plates are provided on the telescopic rods of the clamping electric cylinders. The clamping electric cylinders are electrically connected to the control system through electric slip rings; A control cabinet is provided on one side of the test bench, and a control system is provided in the control cabinet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Clean the output shaft to ensure accurate test results. The control system first delivers the atomized airflow through the liquid inlet into the rotating chamber through the pressurized system. The atomized airflow drives the blades to rotate, and the blades drive the brush barrel to rotate. While the brushes on the brush barrel rotate, they brush the output shaft of the generator set. The atomized airflow enters several brushes through the flow channel and is sprayed on the output shaft of the generator set through the brushes. The brushing and atomized airflow flushing form a composite cleaning, which improves the cleaning effect of the generator set output shaft, facilitates torque detection, and avoids impurities on the surface of the generator set output shaft, which may have an adverse effect on torque detection.

[0016] 2. The first and second inspection plates are cooled promptly to extend their service life. The protrusion on the first inspection plate pushes the idler wheel, causing it to compress the reset spring. The idler wheel also squeezes the hose, gradually reducing the volume of the first chamber. The cooling air pressure in the first chamber increases, and the cooling air pushes open the one-way valve in the air outlet. The cooling air is sprayed into the inspection tube from the air outlet to cool the first and second inspection plates, thereby extending their service life. The magnetic moment inside the magnetic material is disordered, causing the temperature to drop sharply, allowing the interior of the inspection tube to be cooled promptly. Cooling air is also generated at the refrigeration end, which rapidly cools the interior of the inspection tube, improving the cooling effect and extending the service life of the first and second inspection plates.

[0017] 3. The torque is detected by the vibration frequency of the detection wire, realizing the function of the sensor to test the torque, which can be adapted to generator sets of different specifications. The first detection plate, the second detection plate and the detection wire cooperate with each other to form a detection component that replaces the sensor, realizing the torque test of the generator set, achieving the effect of using the sensor to test the torque of the generator set; When the output shaft of the generator set rotates to transmit torque, the output shaft of the generator set will produce torsional deformation. The torsional direction of the generator set always remains in a certain direction, causing the output shaft of the generator set to twist to a certain angle, resulting in one group of detection wires connected between the first detection plate and the second detection plate being subjected to tension and the other to compression. The two groups of detection wires are stretched while the piezoelectric ceramic plate is stretched. The control system detects the vibration frequency of the two groups of detection wires through the piezoelectric ceramic plate; according to Hooke's law, within the range of elastic deformation, the torsional angle of the output shaft of the generator set is proportional to the external torque. Therefore, the tensile or compressive deformation of the two groups of detection wires is also proportional to the external torque, and the vibration frequency of the detection wire is proportional to the stress it is subjected to. Therefore, the control system can measure the vibration frequency of the detection wire through the piezoelectric ceramic plate, and calculate the torque of the output shaft of the generator set through the vibration frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a schematic structural diagram of the transverse sliding plate of the present invention; Figure 3 It is a schematic structural diagram of the longitudinal electric cylinder in the present invention; Figure 4 It is a schematic structural diagram of the cleaning cylinder of the present invention; Figure 5 It is a structural diagram of the first detection board in the present invention; Figure 6 It is a structural schematic diagram of the idler wheel in the present invention; Figure 7 It is a schematic structural diagram of the detection wire in the present invention; Figure 8 It is a structural schematic diagram of the hose in the present invention; Figure 9 It is a schematic structural diagram of the temperature control wire in the present invention; Figure 10 yes Figure 9 A partial enlarged view of area A in the middle.

[0019] In the figure: 1. Control cabinet; 11. Test bench; 12. Horizontal slide; 13. Generator set; 14. Coupling; 15. Brake; 16. Lifting plate; 17. Longitudinal electric cylinder; 18. Horizontal electric cylinder; 19. Centering electric cylinder; 191. Drive motor; 2. Cleaning cylinder; 201. Liquid inlet; 202. Second coil; 21. Brush cylinder; 211. Blade; 3. Detection cylinder; 301. First coil; 302. Idle pulley; 303. Hose; 304. Air inlet; 305. Air outlet; 306. Temperature control wire; 31. First detection plate; 311. First horizontal plate; 312. Piezoelectric ceramic plate; 32. Second detection plate; 321. Second horizontal plate; 322. Clamping plate; 33. Detection wire. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figures 1-10 As shown, the present invention provides a technical solution of a torque test bench for generator set maintenance with a load self-regulation function, including a test bench 11, a transverse slide 12 is installed on the test bench 11, a generator set 13 is installed on the transverse slide 12, a cleaning cylinder 2 is installed on one side of the generator set 13, a detection cylinder 3 is installed on one side of the cleaning cylinder 2, a coupling 14 and a brake 15 are installed in sequence on one side of the detection cylinder 3, a brush cylinder 21 is installed in the cleaning cylinder 2, a first detection plate 31 and a second detection plate 32 are installed in sequence in the detection cylinder 3, a detection wire 33 is installed between the first detection plate 31 and the second detection plate 32, a control cabinet 1 is provided on one side of the test bench 11, and a control system is provided in the control cabinet 1.

[0022] Two groups of first transverse plates 311 are respectively provided at both ends of one side of the first detection plate 31, and second transverse plates 321 are respectively provided at both ends of one side of the second detection plate 32. The second transverse plate 321 is located between the two groups of first transverse plates 311. A detection wire 33 is connected between the second transverse plate 321 and the two groups of first transverse plates 311. A piezoelectric ceramic plate 312 is provided on the second transverse plate 321. The piezoelectric ceramic plate 312 and the detection wire 33 are connected. The piezoelectric ceramic plate 312 is made of piezoelectric ceramic material, and the detection wire 33 is elastic. The piezoelectric ceramic plate 312 is electrically connected to the control system through two groups of electric slip rings. The two groups of electric slip rings are located on both sides of the detection tube 3. The two groups of electric slip rings are both installed on the test bench 11 through a support frame, and the support frame is set on the test bench 11. The first detection plate 31 and the second detection plate 32 are provided with a piezoelectric ceramic plate 312. The piezoelectric ceramic plate 312 and the detection wire 33 are connected. The piezoelectric ceramic plate 312 is a piezoelectric ceramic material, and the detection wire 33 is elastic. The piezoelectric ceramic plate 312 is electrically connected to the control system through two groups of electric slip rings. The two groups of electric slip rings are located on both sides of the detection tube 3. The two groups of electric slip rings are installed on the test bench 11 through a support frame. The support frame is set on the test bench 11. The parts are all provided with magnetic material, and a first coil 301 is embedded in the detection cylinder 3 outside the magnetic material, and the two ends of the first coil 301 are electrically connected to the control system; multiple groups of protrusions are provided on the outside of the first detection plate 31, and multiple groups of idler pulleys 302 are respectively connected to the inner wall of the detection cylinder 3 through multiple groups of telescopic shafts. The telescopic shaft is provided on the detection cylinder 3, and the idler pulley 302 and the telescopic shaft form a rotational connection. The telescopic shaft is a telescopic structure, and a reset spring is sleeved on the telescopic shaft. The two ends of the reset spring are in contact with the detection cylinder 3 and the idler pulley 302, and the protrusions on the outside of the first detection plate 31 are in contact with the multiple groups of idler pulleys 302; multiple groups of clamping electric cylinders are installed in the middle of the first detection plate 31 and the second detection plate 32, and a clamping plate 322 is provided on the telescopic rod of the clamping electric cylinder. The clamping electric cylinder is electrically connected to the control system through an electric slip ring.

[0023] A hose 303 is provided on the inner wall of the detection cylinder 3. The hose 303 is located outside the plurality of idler wheels 302. The idler wheels 302 outside the first detection plate 31 are in contact with the hose 303. The hose 303 is elastic. A plurality of diaphragms are provided inside the hose 303. The diaphragms divide the hose 303 into a plurality of first chambers. The hose 303 is provided with a plurality of air inlets 304 and air outlets 305. The plurality of air inlets 304 and air outlets 305 are respectively connected to the plurality of first chambers. The port 304 passes through the detection cylinder 3 through a pipe and is connected to the outside air. A one-way valve and a flow meter are installed in the air inlet 304 and the air outlet 305, and the one-way valve and the flow meter are electrically connected to the control system; a temperature control wire 306 is provided on the detection cylinder 3 opposite to the hose 303, and the temperature control wire 306 is composed of a metal wire and two adjustment wires of different semiconductor materials. One end of the two adjustment wires of different semiconductor materials are connected to the metal wire, and the two adjustment wires of different semiconductor materials are electrically connected to the control system.

[0024] The interior of the cleaning cylinder 2 is hollow, and the brush cylinder 21 and the cleaning cylinder 2 form a rotating sealed connection. A rotating chamber is formed between the outer side of the brush cylinder 21 and the inner side of the cleaning cylinder 2. Blades 211 are provided on the outer side of the brush cylinder 21, and several brushes are provided on the inner side of the brush cylinder 21. The interior of the brush is hollow, and a flow channel is provided on the brush cylinder 21. The two ends of the flow channel are respectively connected to several brushes and the rotating chamber; the cleaning cylinder 2 and the brush cylinder 21 are penetrated by a cleaning hole, and a liquid inlet 201 is provided on the cleaning cylinder 2, and the liquid inlet 201 is connected to the pressurizing system. The pressurizing system is installed on the test bench 11, and the pressurizing system is used to transport aerosol or air; a second coil 202 is buried in the cleaning cylinder 2, and the second coil 202 is electrically connected to the control system. Metal material is provided in the blades 211, and the metal material is in the magnetic field of the second coil 202. A temperature sensor is provided on the cleaning cylinder 2, and the temperature sensor is electrically connected to the control system.

[0025] A lifting plate 16 is installed under the transverse slide 12. The bottom of the lifting plate 16 is connected to the telescopic rod of the longitudinal electric cylinder 17. The longitudinal electric cylinder 17 is installed on the test bench 11. A guide rail is provided on the lifting plate 16. The transverse slide 12 is slidably connected to the guide rail. The transverse slide 12 is connected to the transverse electric cylinder 18, and the transverse electric cylinder 18 is installed on the lifting plate 16.

[0026] A bracket is provided on the test bench 11, and a centering electric cylinder 19 is installed on the bracket. A drive motor 191 is installed on the telescopic rod of the centering electric cylinder 19, and the output shaft of the drive motor 191 is connected to the cleaning cylinder 2; when the cleaning cylinder 2 has been working for a long time, a certain amount of impurities will be deposited inside. At this time, the staff controls the drive motor 191 to work through the control system, and the drive motor 191 drives the cleaning cylinder 2 to swing left and right, so that the impurities inside the cleaning cylinder 2 are discharged from the cleaning hole, so that the cleaning cylinder 2 can be reused; the brake 15 is installed on the test bench 11, and the brake 15 is a magnetic powder brake.

[0027] Working principle: Press the start button on the control cabinet 1, the torque test bench starts, the staff installs the generator set 13 on the horizontal slide 12 with bolts, the longitudinal electric cylinder 17 drives the lifting plate 16 to move upward, and the lifting plate 16 drives the generator set 13 to move upward, so that the output shaft of the generator set 13 is at the same height as the cleaning cylinder 2.

[0028] When the output shaft of the generator set 13 is at the same height as the cleaning cylinder 2, the displacement sensor in the longitudinal electric cylinder 17 feeds back data to the control system. The control system drives the drive motor 191 and the cleaning cylinder 2 to move through the centering electric cylinder 19, so that the cleaning cylinder 2 and the generator set 13 are in a concentric state. At this time, the transverse electric cylinder 18 drives the transverse slide 12 to move closer to the cleaning cylinder 2, and the transverse slide 12 drives the generator set 13 to move, so that the output shaft of the generator set 13 is inserted into the cleaning hole, so that the output shaft of the generator set 13 is located in the cleaning cylinder 2 to facilitate cleaning.

[0029] When the output shaft of the generator set 13 is located in the cleaning cylinder 2, the displacement sensor in the horizontal electric cylinder 18 feeds back data to the control system. The control system first delivers the atomized airflow into the rotating chamber through the liquid inlet 201 through the pressurization system. The atomized airflow drives the blades 211 to rotate, and the blades 211 drive the brush cylinder 21 to rotate. While the brush on the brush cylinder 21 rotates, the output shaft of the generator set 13 is brushed. The atomized airflow enters several brushes through the flow channel and is sprayed on the output shaft of the generator set 13 through the brushes. The brushing and flushing of the atomized airflow form a composite cleaning, which improves the cleaning effect of the output shaft of the generator set 13, so as to facilitate torque detection and avoid impurities on the surface of the output shaft of the generator set 13, which have an adverse effect on torque detection.

[0030] After the output shaft of the generator set 13 is cleaned for the set time, the pressurizing system pressurizes the external air and delivers it to the liquid inlet 201, and energizes the second coil 202. The pressurized air drives the blades 211 to rotate, and the metal material in the blades 211 rotates accordingly. The metal material cuts the magnetic lines of force in the magnetic field of the second coil 202, and the blades 211 will heat up. The blades 211 heat the pressurized air to form high-temperature air. The high-temperature air is sprayed onto the output shaft of the generator set 13 through the flow channel and the brush to perform the initial drying of the output shaft of the generator set 13. The high-temperature air also dries the inside of the cleaning cylinder 2 at the same time.

[0031] After the output shaft of the generator set 13 is dried for the first time, the control system drives the transverse slide 12 to move away from the cleaning cylinder 2 through the transverse electric cylinder 18, and the transverse slide 12 drives the output shaft of the generator set 13 to move outward from the cleaning cylinder 2. Afterwards, the control system drives the drive motor 191 and the cleaning cylinder 2 to retract through the centering electric cylinder 19, so that the output shaft of the generator set 13 can be inserted into the inspection cylinder 3.

[0032] When the cleaning cylinder 2 is retracted, the control system drives the output shaft of the generator set 13 to be inserted into the inspection cylinder 3 through the transverse electric cylinder 18 and the transverse slide 12. At the same time, the staff connects the brake 15 and the generator set 13 through the coupling 14. The displacement sensor in the transverse electric cylinder 18 feeds back the displacement data of the generator set 13 to the control system. The control system drives the clamping plates 322 to move through the multiple groups of clamping electric cylinders on the first inspection plate 31 and the second inspection plate 32, so that the multiple groups of clamping plates 322 clamp and position the output shaft of the generator set 13. Since multiple groups of clamping electric cylinders and multiple groups of clamping plates 322 are provided, the multiple groups of clamping plates 322 move radially at the same time, which can clamp the output shafts of generator sets 13 of different diameters, can adapt to generator sets 13 of different specifications, and improve the versatility of the torque test bench.

[0033] After the clamping plates 322 on the first detection plate 31 and the second detection plate 32 clamp and position the output shaft of the generator set 13, the clamping electric cylinders on the first detection plate 31 and the second detection plate 32 feed back the displacement data of the clamping plates 322 to the control system. The control system energizes the first coil 301, and the first coil 301 generates a magnetic field. The magnetic field causes the magnetic moment inside the magnetic material on the first detection plate 31 and the second detection plate 32 to change from a disordered arrangement to an ordered arrangement, resulting in a decrease in magnetic entropy. At this time, the magnetic material releases heat to the outside world, and the magnetic material on the first detection plate 31 and the second detection plate 32 dries the output shaft of the generator set 13 again to ensure the cleanliness of the output shaft of the generator set 13.

[0034] After the first coil 301 is energized for a set time, the control system de-energizes the first coil 301. At this time, the magnetic field of the first coil 301 disappears, and the magnetic moments inside the magnetic materials on the first detection plate 31 and the second detection plate 32 become disordered, causing a sudden drop in temperature. The magnetic material cools the first detection plate 31 and the second detection plate 32, and also cools the inside of the detection tube 3, thereby preventing the first detection plate 31 and the second detection plate 32 from overheating and extending the service life of the first detection plate 31 and the second detection plate 32.

[0035] When the first coil 301 is de-energized, the control system connects the generator set 13 to the circuit and connects the two regulating wires made of different semiconductor materials in the temperature control wire 306 to the circuit. The output shaft of the generator set 13 drives the first detection plate 31, the second detection plate 32, the coupling 14, and the brake 15 to rotate. The brake 15 flexibly adjusts the load size according to the set detection requirements, and the protrusion on the first detection plate 31 rotates accordingly. The two regulating wires made of different semiconductor materials and the metal wire serve as the cooling end of the Peltier effect, cooling the air in the hose 303 through the cooling end. When the protrusion on the first detection plate 31 approaches the idler wheel 302, the protrusion on the first detection plate 31 pushes the idler wheel 302 to move, causing the idler wheel 302 to compress the return spring. The idler wheel 302 squeezes the hose 303 at the same time, causing the volume of the first chamber to gradually decrease, and the cooling air pressure in the first chamber to increase. The cooling air pushes open the one-way valve in the air outlet 305, and the cooling air is sprayed into the detection cylinder 3 from the air outlet 305 to cool the first detection plate 31 and the second detection plate 32, thereby improving the service life; the temperature drops sharply by disordering the magnetic moment inside the magnetic material, so that the inside of the detection cylinder 3 is cooled in time, and the cooling air is formed at the refrigeration end to quickly cool the inside of the detection cylinder 3, thereby improving the cooling effect and extending the service life of the first detection plate 31 and the second detection plate 32.

[0036] When the protrusion on the first detection plate 31 moves away from the idler wheel 302, the return spring is released, and the return spring pushes the idler wheel 302 away from the hose 303. The hose 303 gradually recovers under the action of its own elastic force. At this time, the volume of the first chamber gradually increases, and the pressure in the first chamber gradually decreases. The outside air pushes open the one-way valve in the air inlet 304, and the outside air is sucked into the first chamber through the air inlet 304 and is cooled by the refrigeration end.

[0037] When the first detection plate 31 and the second detection plate 32 rotate, the first detection plate 31 and the second detection plate 32 simultaneously drive the detection wire 33 to rotate; when the output shaft of the generator set 13 rotates to transmit torque, the output shaft of the generator set 13 will produce torsional deformation, and the torsional direction of the generator set 13 always remains in a certain direction, so that the output shaft of the generator set 13 is twisted into a certain angle, resulting in one of the two groups of detection wires 33 connected between the first detection plate 31 and the second detection plate 32 being pulled and the other being compressed. The two groups of detection wires 33 are pulled while stretching the piezoelectric ceramic plate 312. The control system detects the vibration frequency of the two groups of detection wires 33 through the piezoelectric ceramic plate 312; According to Hooke's law, within the range of elastic deformation, the torsion angle of the output shaft of the generator set 13 is proportional to the applied torque. Therefore, the tensile or compressive deformation of the two sets of detection wires 33 is also proportional to the applied torque, and the vibration frequency of the detection wire 33 is proportional to the stress it is subjected to. Therefore, the control system can measure the vibration frequency of the detection wire 33 through the piezoelectric ceramic plate 312 and calculate the torque of the output shaft of the generator set 13 through the vibration frequency.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A torque test bench for generator set maintenance with load self-regulation function, characterized by: The invention comprises a test bench (11), wherein a transverse slide (12) is installed on the test bench (11), a generator set (13) is installed on the transverse slide (12), a cleaning cylinder (2) is installed on one side of the generator set (13), a detection cylinder (3) is installed on one side of the cleaning cylinder (2), a coupling (14) and a brake (15) are installed on one side of the detection cylinder (3), a brush cylinder (21) is installed in the cleaning cylinder (2), a first detection plate (31) and a second detection plate (32) are installed in the detection cylinder (3), and a detection wire (33) is installed between the first detection plate (31) and the second detection plate (32).

2. The torque test bench for generator set maintenance with load self-regulation function according to claim 1, characterized in that: Two groups of first transverse plates (311) are respectively provided at both ends of one side of the first detection plate (31), and second transverse plates (321) are respectively provided at both ends of one side of the second detection plate (32), the second transverse plate (321) is located between the two groups of first transverse plates (311), and detection wires (33) are connected between the second transverse plate (321) and the two groups of first transverse plates (311), a piezoelectric ceramic plate (312) is provided on the second transverse plate (321), the piezoelectric ceramic plate (312) and the detection wire (33) are connected, the piezoelectric ceramic plate (312) is a piezoelectric ceramic material, and the detection wire (33) is elastic; The piezoelectric ceramic plate (312) is electrically connected to a control system via two sets of electric slip rings, the two sets of electric slip rings being located on both sides of the detection cylinder (3), and the two sets of electric slip rings being mounted on a test bench (11) via a support frame, the support frame being arranged on the test bench (11).

3. The torque test bench for generator set maintenance with load self-regulation function according to claim 2, characterized in that: Magnetic material is provided inside the first detection plate (31) and the second detection plate (32), a first coil (301) is embedded in the detection cylinder (3) outside the magnetic material, and both ends of the first coil (301) are electrically connected to the control system; The outer side of the first detection plate (31) is provided with a plurality of groups of protrusions, and the inner wall of the detection cylinder (3) is connected to a plurality of groups of idler wheels (302) via a plurality of groups of telescopic shafts. The telescopic shaft is provided on the detection cylinder (3), and the idler wheels (302) and the telescopic shaft form a rotational connection. The telescopic shaft is a telescopic structure, and a reset spring is sleeved on the telescopic shaft. Both ends of the reset spring abut against the detection cylinder (3) and the idler wheels (302). The protrusions on the outer side of the first detection plate (31) abut against the plurality of groups of idler wheels (302).

4. The torque test bench for generator set maintenance with load self-regulation function according to claim 3, characterized in that: A hose (303) is provided on the inner wall of the detection cylinder (3), and the hose (303) is located outside the plurality of idler wheels (302). The idler wheels (302) outside the first detection plate (31) are in contact with the hose (303); The hose (303) is elastic, and a plurality of diaphragms are provided inside the hose (303), and the plurality of diaphragms divide the hose (303) into a plurality of first chambers. The hose (303) is provided with a plurality of air inlets (304) and air outlets (305), and the plurality of air inlets (304) and air outlets (305) are respectively connected to the plurality of first chambers. The air inlet (304) passes through the detection cylinder (3) through a pipeline and is connected to the external air. A one-way valve and a flow meter are installed in each of the air inlet (304) and the air outlet (305), and the one-way valve and the flow meter are electrically connected to a control system.

5. The torque test bench for generator set maintenance with load self-regulation function according to claim 4, characterized in that: A temperature control wire (306) is provided on the detection cylinder (3) facing the hose (303), and the temperature control wire (306) is composed of a metal wire and two adjustment wires made of different semiconductor materials. One end of the two adjustment wires made of different semiconductor materials is connected to the metal wire, and the two adjustment wires made of different semiconductor materials are electrically connected to the control system.

6. The torque test bench for generator set maintenance with load self-regulation function according to claim 5, characterized in that: The cleaning cylinder (2) is hollow inside, the brush cylinder (21) and the cleaning cylinder (2) are connected in a rotating seal, a rotating chamber is formed between the outside of the brush cylinder (21) and the inside of the cleaning cylinder (2), a blade (211) is provided on the outside of the brush cylinder (21), a plurality of brushes are provided on the inside of the brush cylinder (21), the brush is hollow inside, a flow channel is provided on the brush cylinder (21), and both ends of the flow channel are respectively connected to the plurality of brushes and the rotating chamber; The cleaning cylinder (2) and the brush cylinder (21) are both penetrated by a cleaning hole. The cleaning cylinder (2) is provided with a liquid inlet (201). The liquid inlet (201) is connected to a pressurizing system. The pressurizing system is installed on a test bench (11). The pressurizing system is used to deliver aerosol or air.

7. The torque test bench for generator set maintenance with load self-regulation function according to claim 6, characterized in that: A second coil (202) is embedded in the cleaning cylinder (2), and the second coil (202) is electrically connected to a control system. A metal material is provided in the blade (211), and the metal material is within the magnetic field of the second coil (202). A temperature sensor is provided on the cleaning cylinder (2), and the temperature sensor is electrically connected to the control system.

8. The torque test bench for generator set maintenance with load self-regulation function according to claim 7, characterized in that: A lifting plate (16) is installed below the transverse slide (12), and a telescopic rod of a longitudinal electric cylinder (17) is connected to the bottom of the lifting plate (16). The longitudinal electric cylinder (17) is installed on the test bench (11). A guide rail is provided on the lifting plate (16), and the transverse slide (12) is slidably connected to the guide rail. The transverse slide (12) is connected to a transverse electric cylinder (18), and the transverse electric cylinder (18) is installed on the lifting plate (16).

9. The torque test bench for generator set maintenance with load self-regulation function according to claim 8, characterized in that: The test bench (11) is provided with a bracket, a centering electric cylinder (19) is mounted on the bracket, a drive motor (191) is mounted on the telescopic rod of the centering electric cylinder (19), and an output shaft of the drive motor (191) is connected to the cleaning cylinder (2); The brake (15) is mounted on the test bench (11), and the brake (15) is a magnetic powder brake.

10. The torque test bench for generator set maintenance with load self-regulation function according to claim 9, characterized in that: A plurality of groups of clamping electric cylinders are installed in the middle of the first detection plate (31) and the second detection plate (32), a clamping plate (322) is provided on the telescopic rod of the clamping electric cylinder, and the clamping electric cylinder is electrically connected to the control system via an electric slip ring; A control cabinet (1) is provided on one side of the test bench (11), and a control system is provided in the control cabinet (1).

Images