Emergency oil supply device for wheel disc over-rotation tester

Abstract

The invention discloses an emergency oil supply device for a wheel disc over-rotation tester, and belongs to the technical field of test equipment. The device comprises a main motor, a speed increasing box, a transmission shaft, a damper, a lubricating oil tank, a lubricating oil supply pump, a lubricating oil return pump, an emergency oil supply pump and an emergency oil return pump, and the lubricating oil supply pump, the lubricating oil return pump, the emergency oil supply pump and the emergency oil return pump are connected with the speed increasing box, the damper and the lubricating oil tank through pipelines respectively. The emergency oil supply pump and the emergency oil return pump are connected with an output shaft of the main motor through a transmission assembly. In the test process, if power is cut off accidentally or the lubricating oil supply pump and the lubricating oil return pump break down, the wheel disc over-rotation tester will stop freely, at the moment, the output shaft of the main motor will continue to drive the emergency oil supply pump and the emergency oil return pump to operate so as to continuously supply lubricating oil to the speed increasing box and the damper until the equipment stops operating, and the equipment does not stop; and the oil supply is not interrupted, so that the safety of test equipment is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to an emergency oil supply device for a wheel over-rotation tester, belonging to the technical field of test equipment for aircraft engine casing containment, wheel over-rotation rupture and low cycle fatigue testers. Background Art

[0002] According to the requirements of GJB241A, the structural integrity of aircraft engine rotors needs to be assessed, and the rotor components of aircraft engines need to undergo overspeed, disc rupture and low cycle fatigue life tests. The casing containment problem of aircraft engines directly affects flight safety. Therefore, casing containment tests need to be conducted during the engine development process. However, all of the above tests are conducted on a disc overspeed tester. The lubrication system is the core system of the disc overspeed tester. An excellent oil supply system can achieve uninterrupted oil supply after an accidental power outage or a failure of the lubrication oil supply pump, which can effectively ensure the safe operation of the equipment and the smooth completion of the test.

[0003] The working principle of the wheel over-rotation tester is to provide power through the main motor, transmit the power to the speed increaser through the coupling, and then transmit the power to the transmission shaft after the speed increaser is increased. The speed increaser is a gear box, and the damper is located in the middle of the transmission shaft. The transmission shaft drives the engine rotor to rotate in a high vacuum environment, so as to perform over-rotation rupture test, low cycle fatigue test and casing containment test on the engine rotor. During the high-speed operation of the test equipment, it is necessary to ensure that the speed increaser and damper are fully supplied with lubricating oil.

[0004] At present, most of the lubrication systems used in wheel overspeed testers are as follows: Figure 1 In the type shown, the lubricating oil in the lubricating oil tank is supplied to the speed increasing box and the damper through the lubricating oil supply pump, and then the lubricating oil is circulated to the lubricating oil tank through the lubricating oil return pump to ensure the oil supply of the entire system. However, when an unexpected power outage occurs during the operation of the equipment, the lubricating oil supply pump and the lubricating oil return pump will stop working and cannot continuously supply lubricating oil, resulting in an oil supply interruption during the free parking process of the equipment, which will cause serious damage to the speed increasing box and the damper, and even damage the test piece.

[0005] In response to the above situation, the current domestic response measures are mainly: adding a UPS power supply system to the lubrication oil supply pump and the lubrication oil return pump. After an unexpected power outage, the UPS can supply power to the lubrication oil supply pump and the lubrication oil return pump to ensure that lubricating oil continues to be provided to the speed increaser and damper during the free parking process of the equipment.

[0006] However, as the use time increases, the UPS power supply system will age and the power storage capacity will decrease. When an unexpected power outage occurs during the operation of the equipment, it will no longer be able to meet the power demand of the lubricating oil supply pump and the lubricating oil return pump, and it will not be able to ensure the safe shutdown of the equipment, which will cause safety problems for the equipment. In addition, if the lubricating oil supply pump or the lubricating oil return pump fails during the operation of the equipment, the lubricating oil supply to the speed increaser and damper will be interrupted. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an emergency oil supply device for a wheel over-rotation tester.

[0008] The present invention is achieved through the following technical solutions:

[0009] An emergency oil supply device for a wheel overrotation tester comprises a main motor, a speed increasing gearbox, a transmission shaft, a damper, a lubricating oil tank, a lubricating oil supply pump, a lubricating oil return pump, an emergency oil supply pump and an emergency oil return pump, wherein the input shaft of the speed increasing gearbox is connected to the output shaft of the main motor via a coupling, the transmission shaft is transmission-connected to the output shaft of the speed increasing gearbox, the damper is located in the middle of the transmission shaft, the lubricating oil supply pump, the lubricating oil return pump, the emergency oil supply pump and the emergency oil return pump are respectively connected to the speed increasing gearbox, the damper and the lubricating oil tank via pipelines, and the emergency oil supply pump and the emergency oil return pump are respectively connected to the output shaft of the main motor via transmission components.

[0010] The transmission assembly includes a transmission belt and two pulleys, the transmission belt is connected to the two pulleys, one pulley is sleeved on the output shaft of the main motor, and the other pulley is sleeved on the input shaft of the emergency oil supply pump or the emergency oil return pump.

[0011] It also includes a vacuum component and a heating component. The heating component is arranged in the vacuum component. One end of the transmission shaft away from the speed increaser extends into the vacuum component and is located directly above the heating component.

[0012] The vacuum assembly comprises a vacuum box and a vacuum pump, and the vacuum pump is connected to the vacuum box through a pipeline.

[0013] The heating component is located in the middle of the vacuum box.

[0014] The heating component is a heating electric furnace.

[0015] The beneficial effect of the present invention is that after adopting the emergency oil supply device of the wheel overrotation tester provided by the present invention, during the process of using the wheel overrotation tester to perform casing containment test, overrotation rupture test and low cycle fatigue test, if there is an unexpected power outage, or the lubrication oil supply pump and the lubrication oil return pump fail, the wheel overrotation tester will stop freely. During the parking process, the output shaft of the main motor will continue to drive the emergency oil supply pump and the emergency oil return pump to operate, so as to continuously supply lubricating oil to the speed increaser and the damper until the equipment stops running. The reliability of lubrication of the speed increaser and the damper is high, and the function of not stopping the equipment and not interrupting the oil supply is achieved, which effectively ensures the safety of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the emergency oil supply device of the existing wheel over-rotation tester;

[0017] Figure 2 It is a schematic diagram of the structure of the present invention.

[0018] In the figure: 1-main motor, 2-coupling, 3-speed increaser, 4-drive shaft, 5-damper, 6-vacuum box, 7-test piece, 8-heating assembly, 9-vacuum pump, 10-lubricating oil return pump, 11-lubricating oil tank, 12-lubricating oil supply pump, 13-emergency oil supply pump, 14-drive assembly, 15-emergency oil return pump. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0020] like Figure 2As shown, an emergency oil supply device for a wheel overrotation tester described in the present invention comprises a main motor 1, a speed increasing box 3, a transmission shaft 4, a damper 5, a lubricating oil tank 11, a lubricating oil supply pump 12, a lubricating oil return pump 10, an emergency oil supply pump 13 and an emergency oil return pump 15, wherein the input shaft of the speed increasing box 3 is connected to the output shaft of the main motor 1 through a coupling 2, the transmission shaft 4 is drivingly connected to the output shaft of the speed increasing box 3, the damper 5 is located in the middle of the transmission shaft 4, the lubricating oil supply pump 12, the lubricating oil return pump 10, the emergency oil supply pump 13 and the emergency oil return pump 15 are respectively connected to the speed increasing box 3, the damper 5 and the lubricating oil tank 11 through pipelines, and the emergency oil supply pump 13 and the emergency oil return pump 15 are respectively connected to the output shaft of the main motor 1 through a transmission assembly 14. After the test piece 7 is installed on the end of the transmission shaft 4 away from the speed increaser 3, the test piece 7 is started, the main motor 1 is started, and the torque and speed are transmitted to the test piece 7 through the coupling 2, the speed increaser 3 and the transmission shaft 4. At the same time, the output shaft of the main motor 1 drives the emergency oil supply pump 13 and the emergency oil return pump 15 to operate through the transmission assembly 14, and the lubricating oil in the lubricating oil tank 11 is supplied to the speed increaser 3 and the damper 5 through the emergency oil supply pump 13, and the lubricating oil in the speed increaser 3 and the damper 5 is pumped back to the lubricating oil tank 11 through the emergency oil return pump 15. At the same time, the lubricating oil supply pump 12 and the lubricating oil return pump 10 are started and operated, and the lubricating oil in the lubricating oil tank 11 is supplied to the speed increaser 3 and the damper 5 through the lubricating oil supply pump 12, and the lubricating oil in the speed increaser 3 and the damper 5 is pumped back to the lubricating oil tank 11 through the lubricating oil return pump 10.

[0021] After adopting the emergency oil supply device of the wheel over-rotation tester provided by the present invention, during the process of using the wheel over-rotation tester to perform the casing containment test, over-rotation rupture test and low-cycle fatigue test, if there is an unexpected power outage, or the lubricating oil supply pump 12 and the lubricating oil return pump 10 fail, the wheel over-rotation tester will stop freely. During the parking process, the output shaft of the main motor 1 will continue to drive the emergency oil supply pump 13 and the emergency oil return pump 15 to operate, so as to continuously supply lubricating oil to the speed increaser 3 and the damper 5 until the equipment stops running. The reliability of lubricating the speed increaser 3 and the damper 5 is high, and the function of not stopping the equipment and not interrupting the oil supply is realized, which effectively guarantees the safety of the test equipment. In other words, the present invention utilizes the rotation speed of the main motor 1 itself to drive the emergency oil supply pump 13 and the emergency oil return pump 15 to operate, and can continuously supply lubricating oil to the speed increaser 3 and the damper 5. As long as the main motor 1 is still running, there is a continuous supply of lubricating oil, which protects the safety of the test equipment to the greatest extent.

[0022] The transmission assembly 14 includes a transmission belt and two pulleys, the transmission belt is connected to the two pulleys, one of the pulleys is sleeved on the output shaft of the main motor 1, and the other pulley is sleeved on the input shaft of the emergency oil supply pump 13 or the emergency oil return pump 15.

[0023] It also includes a vacuum component and a heating component 8. The heating component 8 is arranged in the vacuum component. One end of the transmission shaft 4 away from the speed increaser 3 extends into the vacuum component and is located directly above the heating component 8.

[0024] The vacuum assembly includes a vacuum box 6 and a vacuum pump 9, and the vacuum pump 9 is connected to the vacuum box 6 through a pipeline. The vacuum box 6 is evacuated by the vacuum pump 9.

[0025] The heating assembly 8 is located in the middle of the vacuum box 6 .

[0026] The heating component 8 is a heating electric furnace, and the test piece 7 can be heated by the heating electric furnace.

Claims

1. An emergency oil supply device for a wheel over-rotation tester, characterized in that: The invention comprises a main motor (1), a speed increasing gearbox (3), a transmission shaft (4), a damper (5), a lubricating oil tank (11), a lubricating oil supply pump (12), a lubricating oil return pump (10), an emergency oil supply pump (13) and an emergency oil return pump (15); the input shaft of the speed increasing gearbox (3) is connected to the output shaft of the main motor (1) through a coupling (2); the transmission shaft (4) is drivingly connected to the output shaft of the speed increasing gearbox (3); the damper (5) is located in the middle of the transmission shaft (4); the lubricating oil supply pump (12), the lubricating oil return pump (10), the emergency oil supply pump (13) and the emergency oil return pump (15) are respectively connected to the speed increasing gearbox (3), the damper (5) and the lubricating oil tank (11) through pipelines; the emergency oil supply pump (13) and the emergency oil return pump (15) are respectively connected to the output shaft of the main motor (1) through a transmission assembly (14).

2. The emergency oil supply device for the wheel over-rotation tester according to claim 1, characterized in that: The transmission assembly (14) comprises a transmission belt and two pulleys, wherein the transmission belt is connected to the two pulleys in a transmission manner, wherein one pulley is sleeved on the output shaft of the main motor (1), and the other pulley is sleeved on the input shaft of the emergency oil supply pump (13) or the emergency oil return pump (15).

3. The emergency oil supply device for the wheel over-rotation tester according to claim 1, characterized in that: It also comprises a vacuum component and a heating component (8), wherein the heating component (8) is arranged in the vacuum component, and an end of the transmission shaft (4) away from the speed increasing box (3) extends into the vacuum component and is located directly above the heating component (8).

4. The emergency oil supply device for the wheel over-rotation tester according to claim 3, characterized in that: The vacuum assembly comprises a vacuum box (6) and a vacuum pump (9), and the vacuum pump (9) is connected to the vacuum box (6) via a pipeline.

5. The emergency oil supply device for the wheel over-rotation tester according to claim 4, characterized in that: The heating component (8) is located in the middle of the vacuum box (6).

6. The emergency oil supply device for the wheel over-rotation tester according to claim 3, characterized in that: The heating component (8) is a heating electric furnace.

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