Generator set maintenance torque test bench with load self-adjusting function

Abstract

The application discloses a torque test platform for generator set maintenance with a load self-adjusting function and relates to the technical field of torque testing. The torque test platform comprises a test platform, a transverse sliding plate installed on the test platform, a generator set installed on the transverse sliding plate, a cleaning cylinder installed on one side of the generator set, a detection cylinder installed on one side of the cleaning cylinder, a first detection plate and a second detection plate installed in the detection cylinder in sequence, a detection wire installed between the first detection plate and the second detection plate, and magnetic materials arranged on the first detection plate and the second detection plate. The magnetic moment inside the magnetic materials is disordered to cause a sudden temperature drop, so that the inside of the detection cylinder is cooled in time. In addition, cooling air is formed at a refrigeration end to rapidly cool the inside of the detection cylinder. The first detection plate, the second detection plate and the detection wire cooperatively form a detection assembly to replace a sensor, so that the torque test of the generator set is realized, and the effect of using the sensor to test the torque of the generator set is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of torque testing, in particular to a generator set maintenance torque testing platform with load self-adjusting function. BACKGROUND

[0002] As the core component of mechanical equipment, the running state of the generator set directly affects the overall performance and safety. The quality of the generator set is mainly tested by the torque testing platform. The torque testing platform is mainly used for measuring the torque and rotating speed of rotating machinery and other dynamic parameters. The core component is a mechanical sensor or an intelligent sensor, which is responsible for converting mechanical torque into measurable electrical signals. The traditional detection method mainly relies on manual experience judgment or basic parameter monitoring, which has the problems of low diagnosis efficiency and insufficient precision.

[0003] Therefore, the existing generator set torque testing platform mainly has the following problems: (1) the output shaft of the generator set is not cleaned before testing, resulting in inaccurate test results, (2) the detection element is not cooled in time, and the service life is reduced due to long-term work. SUMMARY

[0004] The purpose of the present application is to provide a generator set maintenance torque testing platform with load self-adjusting function to solve the problems in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a generator set maintenance torque testing platform with load self-adjusting function, comprising a testing platform, a horizontal sliding plate installed on the testing platform, a generator set installed on the horizontal sliding plate, a cleaning cylinder installed on one side of the generator set, a detection cylinder installed on one side of the cleaning cylinder, a shaft 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 horizontal plates are arranged at both ends of one side of the first detection plate, each group of the first horizontal plates has two first horizontal plates, a second horizontal plate is arranged at both ends of one side of the second detection plate, the second horizontal plate is located between the two groups of first horizontal plates, detection wires are connected between the second horizontal plate and the two groups of first horizontal plates, a piezoelectric ceramic plate is arranged on the second horizontal plate, the piezoelectric ceramic plate is connected with the detection wire, the piezoelectric ceramic plate is made of piezoelectric ceramic material, and the detection wire has elasticity.

[0007] The piezoelectric ceramic plate is electrically connected with a control system through two groups of electric slip rings, the two groups of electric slip rings are located on both sides of the detection cylinder, the two groups of electric slip rings are installed on the testing platform through a support frame, and the support frame is arranged on the testing platform.

[0008] Both the first and second detection plates are equipped with magnetic material inside, and a first coil is embedded in the detection cylinder outside the magnetic material. The two ends of the first coil are electrically connected to the control system.

[0009] The outer side of the first detection plate is provided with multiple sets of protrusions. Multiple sets of idler wheels are respectively connected to the inner wall of the detection cylinder through multiple sets of telescopic shafts. The telescopic shafts are set on the detection cylinder. The idler wheels and the telescopic shafts form a rotatable connection. The telescopic shafts are telescopic structures. A return spring is sleeved on the telescopic shafts. The two ends of the return springs abut against the detection cylinder and the idler wheels. The protrusions on the outer side of the first detection plate abut against the multiple sets of idler wheels.

[0010] A flexible tube is provided on the inner wall of the detection cylinder. The flexible tube is located outside multiple sets of idler wheels, and the idler wheel outside the first detection plate is in contact with the flexible tube.

[0011] The flexible hose is elastic and has several diaphragms inside, which divide the hose into several first chambers. The hose has several air inlets and outlets, which are connected to the first chambers respectively. The air inlets pass through a pipe to the detection cylinder and are connected to the outside air. A one-way valve and a flow meter are installed in both the air inlet and the air outlet. The one-way valve and the flow meter are electrically connected to the control system.

[0012] A temperature control wire is provided on the detection cylinder directly opposite the flexible tube. The temperature control wire consists of a metal wire and two adjustment wires made of different semiconductor materials. One end of each adjustment wire 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.

[0013] The cleaning cylinder is hollow inside, and the brush cylinder and the cleaning cylinder form a rotating sealed connection. 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, and the inner side of the brush cylinder is provided with several brushes. The brushes are hollow inside, and the brush cylinder is provided with a flow channel. The two ends of the flow channel are respectively connected to several brushes and the rotating chamber.

[0014] The cleaning cylinder and the brush cylinder share a common cleaning hole. The cleaning cylinder is equipped with a liquid inlet, which is connected to a pressurization system. The pressurization system is installed on a test bench and is used to deliver aerosol or air.

[0015] A second coil is embedded inside the cleaning cylinder and is electrically connected to the control system. A metal material is disposed inside the blade and is located within the magnetic field of the second coil. A temperature sensor is disposed on the cleaning cylinder and is electrically connected to the control system.

[0016] A lifting plate is installed below the horizontal sliding plate. The bottom of the lifting plate is connected to the telescopic rod of the vertical electric cylinder. The vertical electric cylinder is installed on the test bench. A guide rail is provided on the lifting plate. The horizontal sliding plate is slidably connected to the guide rail. The horizontal sliding plate is connected to the horizontal electric cylinder, which is installed on the lifting plate.

[0017] The test bench is equipped with a support, on which a centering electric cylinder is mounted. A drive motor is mounted on the telescopic rod of the centering electric cylinder, and the output shaft of the drive motor is connected to the cleaning cylinder.

[0018] The brake is mounted on a test bench and is a magnetic powder brake.

[0019] Multiple sets of clamping electric cylinders are installed in the middle of the first and second detection plates. The telescopic rod of the clamping electric cylinder is provided with a clamping plate. The clamping electric cylinder is electrically connected to the control system through an electric slip ring.

[0020] A control cabinet is installed on one side of the test bench, and a control system is installed inside the control cabinet.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. Output shaft cleaning ensures accurate test results. The control system first delivers atomized airflow through the inlet to the rotating chamber via a pressurization system. The atomized airflow drives the blades to rotate, which in turn drives the brush cylinder to rotate. Simultaneously, the brushes on the brush cylinder clean the generator set's output shaft. The atomized airflow enters several brushes through flow channels and is sprayed onto the generator set's output shaft. This combined brushing and atomized airflow rinsing creates a comprehensive cleaning effect, improving the cleaning efficiency of the generator set's output shaft. This facilitates torque detection and prevents impurities on the generator set's output shaft surface from negatively impacting torque measurement.

[0023] 2. Timely cooling of the first and second detection plates extends their service life. A protrusion on the first detection plate pushes an idler wheel, compressing the return spring. Simultaneously, the idler wheel squeezes the hose, gradually reducing the volume of the first chamber. This increases the pressure of the cooling air within the first chamber, forcing the air to open the one-way valve at the outlet. The cooling air is then sprayed into the detection cylinder, cooling the first and second detection plates and extending their service life. Furthermore, the disordered magnetic moments within the magnetic material cause a rapid temperature drop, ensuring timely cooling of the detection cylinder's interior. The formation of cooling air at the cooling end also contributes to rapid cooling of the detection cylinder's interior, enhancing the cooling effect and extending the service life of both the first and second detection plates.

[0024] 3. The torque is detected by the vibration frequency of the detection wire, realizing the function of a sensor to test torque, and can be adapted to generator sets of different specifications. The first detection plate, the second detection plate, and the detection wire work together to form a detection component that replaces the sensor, realizing the torque test of the generator set and achieving the effect of using a sensor to test the torque of the generator set;

[0025] When the generator set's output shaft rotates to transmit torque, it undergoes torsional deformation. The direction of this torsion remains constant, causing the output shaft to twist at a certain angle. This results in one set of detection wires connected to the first and second detection plates being under tension and the other under compression. Simultaneously, the tension on the two sets of detection wires stretches the piezoelectric ceramic plate. The control system detects the vibration frequency of the two sets of detection wires through the piezoelectric ceramic plate. According to Hooke's Law, within the range of elastic deformation, the torsional angle of the generator set's output shaft is proportional to the applied torque. Therefore, the tensile or compressive deformation of the two sets of detection wires is also proportional to the applied torque. Furthermore, the vibration frequency of the detection wires is proportional to the stress they experience. Thus, the control system can measure the vibration frequency of the detection wires through the piezoelectric ceramic plate and calculate the torque of the generator set's output shaft based on this vibration frequency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the transverse sliding plate in this invention;

[0028] Figure 3 This is a schematic diagram of the longitudinal electric cylinder in this invention;

[0029] Figure 4 This is a schematic diagram of the cleaning cylinder in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of the first detection plate in this invention;

[0031] Figure 6 This is a schematic diagram of the idler wheel in this invention;

[0032] Figure 7 This is a schematic diagram of the detection wire in this invention;

[0033] Figure 8 This is a schematic diagram of the hose structure in this invention;

[0034] Figure 9 This is a schematic diagram of the temperature control wire in this invention;

[0035] Figure 10 yes Figure 9 A magnified view of a portion of region A in the middle.

[0036] In the diagram: 1. Control cabinet; 11. Test bench; 12. Lateral slide plate; 13. Generator set; 14. Coupling; 15. Brake; 16. Lifting plate; 17. Longitudinal electric cylinder; 18. Lateral 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. Idler wheel; 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 Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example: Figures 1-10 As shown, the present invention provides a technical solution for a torque test bench for generator set maintenance with load self-adjustment function, including a test bench 11, a transverse slide plate 12 installed on the test bench 11, a generator set 13 installed on the transverse slide plate 12, a cleaning cylinder 2 installed on one side of the generator set 13, a detection cylinder 3 installed on one side of the cleaning cylinder 2, a coupling 14 and a brake 15 sequentially installed on one side of the detection cylinder 3, a brush cylinder 21 installed inside the cleaning cylinder 2, a first detection plate 31 and a second detection plate 32 sequentially installed inside the detection cylinder 3, a detection wire 33 installed between the first detection plate 31 and the second detection plate 32, a control cabinet 1 provided on one side of the test bench 11, and a control system provided inside the control cabinet 1.

[0039] Two sets of first horizontal plates 311 are respectively provided at both ends of one side of the first detection plate 31, and two sets of second horizontal plates 321 are respectively provided at both ends of one side of the second detection plate 32. The second horizontal plates 321 are located between the two sets of first horizontal plates 311. Detection wires 33 are connected between the second horizontal plates 321 and the two sets of first horizontal plates 311. A piezoelectric ceramic plate 312 is provided on the second horizontal plate 321. The piezoelectric ceramic plate 312 is connected to the detection wires 33. The piezoelectric ceramic plate 312 is made of piezoelectric ceramic material, and the detection wires 33 are elastic. The piezoelectric ceramic plate 312 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 3. Both sets of electric slip rings are mounted on the test bench 11 by a support frame. The support frame is set on the test bench 11. The first detection plate 31 and the second detection plate 32 are located within... Each part is equipped with a magnetic material. A first coil 301 is embedded in the detection cylinder 3 on the outside of the magnetic material. The two ends of the first coil 301 are electrically connected to the control system. Multiple sets of protrusions are provided on the outside of the first detection plate 31. Multiple sets of idler wheels 302 are connected to the inner wall of the detection cylinder 3 through multiple sets of telescopic shafts. The telescopic shafts are set on the detection cylinder 3, and the idler wheels 302 and the telescopic shafts form a rotatable connection. The telescopic shafts are telescopic structures. A return spring is sleeved on the telescopic shaft. The two ends of the return spring abut against the detection cylinder 3 and the idler wheels 302. The protrusions on the outside of the first detection plate 31 abut against the multiple sets of idler wheels 302. Multiple sets 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. The clamping electric cylinder is electrically connected to the control system through an electric slip ring.

[0040] A flexible hose 303 is installed on the inner wall of the detection cylinder 3. The hose 303 is located outside multiple sets of idler wheels 302. The idler wheel 302 outside the first detection plate 31 contacts the hose 303. The hose 303 is elastic and has several diaphragms inside, which divide the hose 303 into several first chambers. The hose 303 has several air inlets 304 and air outlets 305, which are respectively connected to several first chambers for air intake. The inlet 304 extends through the pipe out of the detection cylinder 3 and communicates with the outside air. Both the inlet 304 and the outlet 305 are equipped with a one-way valve and a flow meter, which are electrically connected to the control system. A temperature control wire 306 is installed on the detection cylinder 3 opposite to the hose 303. The temperature control wire 306 is composed of a metal wire and two different semiconductor materials of adjusting wire. One end of each of the two different semiconductor materials of adjusting wire is connected to the metal wire, and the two different semiconductor materials of adjusting wire are electrically connected to the control system.

[0041] The cleaning cylinder 2 is hollow inside. 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. The outer side of the brush cylinder 21 is provided with blades 211, and the inner side of the brush cylinder 21 is provided with several brushes. The brushes are hollow inside. The brush cylinder 21 is provided with a flow channel, and 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 connected by a cleaning hole. The cleaning cylinder 2 is provided with a liquid inlet 201, which is connected to a pressurization system. The pressurization system is installed on the test bench 11 and is used to deliver aerosol or air. A second coil 202 is embedded in the cleaning cylinder 2 and is electrically connected to the control system. The blades 211 are provided with metal material, which is in the magnetic field of the second coil 202. A temperature sensor is provided on the cleaning cylinder 2 and is electrically connected to the control system.

[0042] A lifting plate 16 is installed below the horizontal sliding plate 12. The bottom of the lifting plate 16 is connected to the telescopic rod of the vertical electric cylinder 17. The vertical electric cylinder 17 is installed on the test bench 11. A guide rail is provided on the lifting plate 16. The horizontal sliding plate 12 is slidably connected to the guide rail. The horizontal sliding plate 12 is connected to the horizontal electric cylinder 18, which is installed on the lifting plate 16.

[0043] A support frame is provided on the test bench 11, and a centering electric cylinder 19 is installed on the support frame. A drive motor 191 is installed on the telescopic rod of the centering electric cylinder 19. 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 accumulate inside. At this time, the operator controls the drive motor 191 to work through the control system. 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. A brake 15 is installed on the test bench 11. The brake 15 is a magnetic powder brake.

[0044] Working principle: Press the start button on the control cabinet 1 to start the torque test bench. The operator installs the generator set 13 on the horizontal slide plate 12 with bolts. The longitudinal electric cylinder 17 drives the lifting plate 16 to move upward. 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.

[0045] When the output shaft of generator set 13 is at the same height as the cleaning cylinder 2, the displacement sensor in the longitudinal electric cylinder 17 feeds the data back 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 generator set 13 are in a concentric state. At this time, the transverse electric cylinder 18 drives the transverse sliding plate 12 to move closer to the cleaning cylinder 2. The transverse sliding plate 12 drives the generator set 13 to move, so that the output shaft of generator set 13 is inserted into the cleaning hole, so that the output shaft of generator set 13 is located in the cleaning cylinder 2, so as to facilitate cleaning.

[0046] When the output shaft of generator set 13 is located inside cleaning cylinder 2, the displacement sensor inside transverse electric cylinder 18 feeds data back to the control system. The control system first delivers the atomized airflow through the liquid inlet 201 to the rotating chamber via 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 brushes on the brush cylinder 21 rotate, they brush the output shaft of generator set 13. The atomized airflow enters several brushes through the flow channel and is sprayed onto the output shaft of generator set 13. Through brushing and atomized airflow rinsing, a composite cleaning is formed, which improves the cleaning effect of the output shaft of generator set 13, so as to facilitate torque detection and avoid impurities on the surface of the output shaft of generator set 13 from adversely affecting torque detection.

[0047] After the output shaft of generator set 13 is cleaned for a set time, the pressurization 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 inside the blades 211 rotates accordingly. The metal material cuts the magnetic field lines 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 generator set 13 through the flow channel and brush to perform the initial drying of the output shaft of generator set 13. At the same time, the high-temperature air dries the inside of the cleaning cylinder 2.

[0048] After the output shaft of generator set 13 is initially dried, the control system drives the transverse slide plate 12 to move away from the cleaning cylinder 2 via the transverse electric cylinder 18. The transverse slide plate 12 drives the output shaft of generator set 13 to move outward from inside the cleaning cylinder 2. Afterward, the control system drives the drive motor 191 and the cleaning cylinder 2 to retract via the centering electric cylinder 19 so that the output shaft of generator set 13 can be inserted into the detection cylinder 3.

[0049] After the cleaning cylinder 2 retracts, the control system drives the output shaft of the generator set 13 to insert into the detection cylinder 3 via the transverse electric cylinder 18 and the transverse sliding plate 12. At the same time, the operator connects the brake 15 and the generator set 13 via 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 plate 322 to move via multiple sets of clamping electric cylinders on the first detection plate 31 and the second detection plate 32, so that the multiple sets of clamping plates 322 clamp and position the output shaft of the generator set 13. Since multiple sets of clamping electric cylinders and multiple sets of clamping plates 322 are provided, and the multiple sets of clamping plates 322 move radially at the same time, the output shaft of the generator set 13 with different diameters can be clamped, which can adapt to different specifications of generator sets 13 and improve the versatility of the torque test bench.

[0050] 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, which generates a magnetic field. This magnetic field causes the magnetic moments 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, ensuring the cleanliness of the output shaft of the generator set 13.

[0051] When 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 disorder of the magnetic moments inside the magnetic material on the first detection plate 31 and the second detection plate 32 causes 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 cylinder 3, so as to avoid overheating of the first detection plate 31 and the second detection plate 32 and extend the service life of the first detection plate 31 and the second detection plate 32.

[0052] When the first coil 301 is de-energized, the control system connects the generator set 13 to the circuit and connects the two different semiconductor material regulating wires 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 according to the set detection requirements. The protrusion on the first detection plate 31 rotates accordingly. The two different semiconductor material regulating wires and the metal wire are the Peltier effect cooling end, which cools the air in the hose 303 through the cooling end.

[0053] When the protrusion on the first detection plate 31 approaches the idler wheel 302, the protrusion pushes the idler wheel 302 to move, causing the idler wheel 302 to compress the return spring. At the same time, the idler wheel 302 squeezes the hose 303, causing the volume of the first chamber to gradually decrease. The pressure of the cooling air in the first chamber increases, and the cooling air opens the one-way valve in the air outlet 305. The cooling air is sprayed from the air outlet 305 into the detection cylinder 3 to cool the first detection plate 31 and the second detection plate 32, thereby improving their service life. The temperature drops rapidly due to the disordered magnetic moment inside the magnetic material, allowing the inside of the detection cylinder 3 to be cooled in time. Furthermore, the formation of cooling air at the cooling end allows for rapid cooling inside the detection cylinder 3, improving the cooling effect and extending the service life of the first detection plate 31 and the second detection plate 32.

[0054] When the protrusion on the first detection plate 31 moves away from the idler wheel 302, the reset spring is released. The reset spring pushes the idler wheel 302 away from the hose 303. The hose 303 gradually recovers under 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 external air pushes open the one-way valve in the air inlet 304. The external air is drawn into the first chamber through the air inlet 304 and cooled by the cooling end.

[0055] When the first detection plate 31 and the second detection plate 32 rotate, they simultaneously drive the detection wires 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 undergo torsional deformation. The torsional direction of the generator set 13 is always kept in a certain direction, causing the output shaft of the generator set 13 to be torsionally angled. This results in one set of detection wires 33 connected between the first detection plate 31 and the second detection plate 32 being under tension and the other under compression. When the two sets of detection wires 33 are under tension, they stretch the piezoelectric ceramic plate 312. The control system detects the vibration frequency of the two sets of detection wires 33 through the piezoelectric ceramic plate 312.

[0056] According to Hooke's Law, within the range of elastic deformation, the torsional angle of the output shaft of 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. 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 generator set 13 through the vibration frequency.

[0057] 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A torque testing bench for generator set maintenance with load self-adjustment function, characterized in that: The test bench (11) is equipped with a transverse slide plate (12), a generator set (13) is installed on the transverse slide plate (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 sequentially on one side of the detection cylinder (3), a brush cylinder (21) is installed inside the cleaning cylinder (2), a first detection plate (31) and a second detection plate (32) are installed sequentially inside the detection cylinder (3), and a detection wire (33) is installed between the first detection plate (31) and the second detection plate (32). The first detection plate (31) and the second detection plate (32) are both provided with magnetic material. The detection cylinder (3) outside the magnetic material is provided with a first coil (301). The two 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 multiple sets of protrusions. Multiple sets of idler wheels (302) are connected to the inner wall of the detection cylinder (3) through multiple sets of telescopic shafts. The telescopic shaft is set on the detection cylinder (3). The idler wheel (302) and the telescopic shaft form a rotatable connection. The telescopic shaft is a telescopic structure. A return spring is sleeved on the telescopic shaft. The two ends of the return spring abut against the detection cylinder (3) and the idler wheel (302). The protrusions on the outer side of the first detection plate (31) abut against the multiple sets of idler wheels (302). A flexible tube (303) is provided on the inner wall of the detection cylinder (3). The flexible tube (303) is located outside the multiple sets of idler wheels (302). The idler wheel (302) outside the first detection plate (31) is in contact with the flexible tube (303). The flexible hose (303) is elastic. The hose (303) has several diaphragms inside, which divide the hose (303) into several first chambers. The hose (303) has several air inlets (304) and air outlets (305). The air inlets (304) and air outlets (305) are respectively connected to the several first chambers. The air inlets (304) pass through the detection cylinder (3) through a pipe and are connected to the outside air. A one-way valve and a flow meter are installed in both the air inlets (304) and the air outlets (305). The one-way valves and flow meters are electrically connected to the control system.

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

3. A torque testing bench for generator set maintenance with load self-adjustment function as described in claim 2, characterized in that: A temperature control wire (306) is provided on the detection cylinder (3) directly opposite the hose (303). The temperature control wire (306) is composed of a metal wire and two different semiconductor materials. One end of each of the two different semiconductor materials is connected to the metal wire, and the two different semiconductor materials are electrically connected to the control system.

4. A torque testing bench for generator set maintenance with load self-adjustment function as described in claim 3, characterized in that: The cleaning cylinder (2) is hollow inside. 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). A blade (211) is provided on the outer side of the brush cylinder (21). Several brushes are provided on the inner side of the brush cylinder (21). The brushes are hollow inside. 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 connected by a cleaning hole. The cleaning cylinder (2) is provided with a liquid inlet (201). The liquid inlet (201) is connected to a pressurization system. The pressurization system is installed on the test bench (11) and is used to deliver aerosol or air.

5. A torque test bench for generator set maintenance with load self-adjustment function as described in claim 4, characterized in that: The cleaning cylinder (2) is equipped with a second coil (202), which is electrically connected to the control system. The blade (211) is equipped with a metal material, which is located within the magnetic field of the second coil (202). The cleaning cylinder (2) is equipped with a temperature sensor, which is electrically connected to the control system.

6. A torque test bench for generator set maintenance with load self-adjustment function as described in claim 5, characterized in that: A lifting plate (16) is installed below the horizontal sliding plate (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 horizontal sliding plate (12) is slidably connected to the guide rail. The horizontal sliding plate (12) is connected to the horizontal electric cylinder (18). The horizontal electric cylinder (18) is installed on the lifting plate (16).

7. A torque test bench for generator set maintenance with load self-adjustment function as described in claim 6, characterized in that: The test bench (11) is provided with a bracket, 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). The output shaft of the drive motor (191) is connected to the cleaning cylinder (2). The brake (15) is installed on the test bench (11), and the brake (15) is a magnetic powder brake.

8. A torque test bench for generator set maintenance with load self-adjustment function according to claim 7, characterized in that: Multiple sets of clamping electric cylinders are installed in the middle of the first detection plate (31) and the second detection plate (32). The telescopic rod of the clamping electric cylinder is provided with a clamping plate (322). The clamping electric cylinder is electrically connected to the control system through an electric slip ring. A control cabinet (1) is provided on one side of the test bench (11), and a control system is provided inside the control cabinet (1).

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