A test bench for verifying the test of accessory casing after oil cut-off

Abstract

The present application provides a test bench for verifying the test after the oil cut-off of the accessory casing, which belongs to the field of mechanical design technology. The test bench includes: a mechanical system, a product lubrication system and an electrical system. The electrical system is electrically connected to the product lubrication system. The accessory casing is located in the mechanical system. During the normal operation of the test bench, the electrical system controls the product lubrication system to supply oil to the casing; during the normal operation of the accessory casing, the electrical system controls the product lubrication system so that the oil supply pump supplies oil and lubricates the accessory casing; when an oil cut-off test is required, the electrical system controls the product lubrication system to introduce the lubricating oil of the oil supply pump into the oil drain line, inflates the accessory casing, and performs an oil cut-off test on the accessory casing. The test bench of the present invention solves the problem of cutting off the lubricating oil supply and increasing the air intake during the test, fully meets the test requirements, and has the advantages of stability, reliability, simple operation, labor saving and high work efficiency; it also provides technical experience for other casing oil cut-off tests.

Description

Technical Field

[0001] The present application belongs to the field of mechanical design technology, and in particular relates to a test bench for verifying an accessory casing after oil is cut off. Background Art

[0002] Currently, the accessory casing test bench primarily performs run-in and delivery tests to verify the performance parameters and assembly quality of the accessory casing. The test bench also features scientific research capabilities such as endurance tests and cantilever torque tests. During actual engine operation, if the engine oil supply is interrupted due to factors such as abnormal oil pump operation or oil leakage, the accessory casing must be verified to be inflated after the oil supply is cut off and then restored after the air supply is cut off. This test also verifies the extent of damage to the internal gears and bearings after the accessory casing has operated for a period of time, ensuring the accessory casing's performance stability under extreme conditions.

[0003] Therefore, it is necessary to propose a test bench for verifying the test after the oil is cut off of the accessory casing. Summary of the Invention

[0004] In order to verify that the accessory case is inflated after the oil is cut off, and then the air supply is cut off and the oil supply is restored, so as to verify the degree of damage to the internal gears and bearings of the accessory case after working for a period of time, thereby ensuring the performance stability of the accessory case under extreme conditions, the present invention provides a test bench for verifying the test of the accessory case after the oil is cut off. The technical solution is as follows:

[0005] A test bench for verifying the test of the accessory casing after oil is cut off, comprising: a mechanical system, a product lubrication system and an electrical system, wherein the electrical system is electrically connected to the product lubrication system, and the accessory casing is located in the mechanical system.

[0006] During normal operation of the test bench, the electrical system controls the product lubrication system to supply oil to the casing; during normal operation of the accessory casing, the electrical system controls the product lubrication system to enable the oil supply pump to supply oil and lubricate the accessory casing; when an oil cut-off test is required, the electrical system controls the product lubrication system to introduce the lubricating oil of the oil supply pump into the oil drain line, inflates the accessory casing, and performs an oil cut-off test on the accessory casing.

[0007] Optionally, the mechanical system includes: a speed increasing gearbox, a product mounting bracket, an adapter sleeve and a coupling.

[0008] The speed-increasing gearbox is connected to the motor, the product mounting bracket is installed above the speed-increasing gearbox, and the adapter sleeve is connected to the accessory casing on the product mounting bracket; one end of the coupling is connected to the adapter sleeve, and the other end is connected to the load gearbox, and the accessory casing transmits torque through the coupling and the adapter sleeve.

[0009] Optionally, the product lubrication system includes: a temperature sensor, a pressure sensor, a flow meter, a three-way valve, a stop valve and an electric pressure regulating valve.

[0010] The stop valve is set before the oil inlet of the accessory casing lubrication pipeline to control the on and off of the air source;

[0011] The three-way valve is installed on the accessory casing lubrication oil inlet pipe, one end of which is connected to the oil tank to control the flow of lubricating oil into the tank or casing;

[0012] The temperature sensor is set at a preset position in front of the lubrication oil inlet pipeline of the accessory casing to monitor the temperature in the product lubrication system in real time;

[0013] The pressure sensor is installed at a preset position in front of the lubrication oil inlet pipe of the accessory casing to monitor the pressure in the product lubrication system in real time;

[0014] The flow meter is installed on the main oil inlet pipeline of the accessory casing to monitor the flow in the product lubrication system in real time;

[0015] The electric pressure regulating valve is set on the lubrication overflow line of the accessory casing to automatically adjust the oil inlet pressure.

[0016] Optionally, the temperature sensor is arranged 500m before the lubrication oil inlet pipeline of the accessory casing.

[0017] Optionally, the pressure sensor is arranged 500m in front of the lubrication oil inlet pipe of the accessory casing.

[0018] Furthermore, the product lubrication system also includes: oil filter,

[0019] The oil filter is installed in front of the oil circuit of the accessory casing, and the lubricating oil in the fuel tank is filtered by the oil filter before entering the accessory casing.

[0020] Optionally, the electrical system includes: PLC and host computer,

[0021] The PLC is set in the test bench and connected to the host computer. The host computer is equipped with a control system. The host computer controls the PLC so that the PLC controls the three-way valve and the stop valve to work.

[0022] During the normal operation of the test bench, the upper computer controls the stop valve of the air source through the PLC to be in the off-circuit state, and the three-way valve of the oil supply is in the oil supply state for the casing; during the normal operation of the accessory casing, the upper computer controls the three-way valve to be open, the oil drain line to be closed, the stop valve to be closed, and the oil supply pump to supply oil and lubrication to the accessory casing normally through the PLC; when an oil cut-off test is required, the upper computer controls the three-way valve to be closed, the oil drain line to be opened, the stop valve to be opened, the lubricating oil of the oil supply pump to be introduced into the oil drain line, the accessory casing to be inflated, and the accessory casing to be operated for the oil cut-off test.

[0023] The present invention provides a test bench for verifying accessory casing oil-depletion testing. This bench solves the problem of cutting off lubricating oil and increasing air intake during testing, fully meeting test requirements and offering advantages such as stability, reliability, ease of operation, labor-saving operation, and high efficiency. It also provides technical experience for other casing oil-depletion testing.

[0024] The present invention can verify the degree of damage to internal gears and bearings of an accessory casing after the accessory casing is operated under the condition of being inflated after oil is cut off. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a test bench for verifying the after-oil-cut test of an accessory casing provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of a mechanical system structure provided in an embodiment of the present application;

[0027] Figure 3 Schematic diagram of the lubrication principle of the accessory casing provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The present application is further described in detail below through specific implementation methods and drawings.

[0029] The test bench for verifying the oil-free test of the accessory casing provided by the present invention can be found in Figure 1 , including: mechanical system, product lubrication system and electrical system.

[0030] Specifically, see Figure 2 The mechanical system includes: speed increasing gearbox, product mounting bracket, adapter sleeve and coupling.

[0031] The speed-increasing gearbox is connected to the motor, the product mounting bracket is installed above the speed-increasing gearbox, and the adapter sleeve is connected to the product (i.e., the accessory housing) on ​​the product mounting bracket. One end of the coupling is connected to the adapter sleeve, and the other end is connected to the load gearbox. The accessory housing transmits torque through the coupling and adapter sleeve.

[0032] The product lubrication system includes: oil filter, temperature sensor, pressure sensor, flow meter, three-way valve, stop valve and electric pressure regulating valve.

[0033] The oil filter is installed in front of the oil circuit of the accessory casing. The lubricating oil in the fuel tank is filtered by the oil filter before entering the accessory casing, thereby improving the cleanliness of the lubricating oil.

[0034] The stop valve is set at the position before the oil inlet of the accessory casing lubrication pipeline, and controls the on and off of the air source under the control of the programmable logic controller PLC.

[0035] A three-way valve is installed on the accessory casing lubrication oil inlet pipe, one end of which is connected to the oil tank. The three-way valve controls the flow of lubricating oil into the oil tank or casing under the control of the PLC.

[0036] The temperature sensor is installed 500m before the lubrication oil inlet pipeline of the accessory casing to monitor the temperature in the product lubrication system in real time.

[0037] The pressure sensor is installed 500m in front of the accessory casing lubrication oil inlet pipe to monitor the pressure in the product lubrication system in real time.

[0038] The flow meter is installed on the main oil inlet pipeline of the accessory casing lubrication to monitor the flow in the product lubrication system in real time.

[0039] The electric pressure regulating valve is set on the lubrication overflow line of the accessory casing to automatically adjust the oil inlet pressure.

[0040] The lubrication pipeline simulates the actual pipeline status of the casing.

[0041] The lubricating oil tank simulates the actual oil tank volume of the receiver.

[0042] The electrical system includes: PLC, host computer and control system.

[0043] The PLC is set in the test bench and connected to the host computer, which is equipped with a control system.

[0044] The upper computer control PLC can quickly, synchronously and stably control the operation of the three-way valve and the stop valve.

[0045] During normal operation of the test bench, the stop valve of the gas source is in the off-circuit state, and the three-way valve of the oil supply is in the state of supplying oil to the casing. Figure 3 To prevent oil interruptions during lubrication, a three-way valve and an oil drain line, as well as a shutoff valve and an air intake line, are added to the product's oil inlet. During normal operation of the accessory housing, the three-way valve is open, the oil drain line and shutoff valve are closed, and the oil supply pump continues to lubricate the product. When an oil shutoff test is required, the PLC controls the three-way valve to close, the oil drain line and shutoff valve to open, and oil from the oil supply pump is introduced into the oil drain line, aerating the accessory housing. The accessory housing then undergoes an oil shutoff test.

[0046] The test bench of the present invention solves the problem of cutting off the lubricating oil supply and increasing the air intake during the test, fully meeting the test requirements and featuring the advantages of stability, reliability, simple operation, labor saving, and high work efficiency. It also provides technical experience for other casing oil cut-off tests.

[0047] Through the test bench of the present invention, it is possible to verify that the accessory casing is inflated after the oil is cut off, and then the air source is cut off and the oil supply is restored to test, so as to verify the degree of damage to the internal gears and bearings after the accessory casing has been working for a period of time, thereby ensuring the performance stability of the accessory casing under extreme conditions.

[0048] The above merely describes the embodiments of the present application, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Furthermore, any portions not described in detail herein are conventional techniques.

Claims

1. A test bench for verifying the test of the accessory casing after oil is cut off, characterized in that: include: Mechanical system, product lubrication system and electrical system. The electrical system is electrically connected to the product lubrication system. The accessory housing is located in the mechanical system. During normal operation of the test bench, the electrical system controls the product lubrication system to supply oil to the accessory casing; during normal operation of the accessory casing, the electrical system controls the product lubrication system to enable the oil supply pump to supply oil and lubricate the accessory casing; when an oil cut-off test is required, the electrical system controls the product lubrication system to introduce the lubricating oil from the oil supply pump into the oil drain line to inflate the accessory casing, and the accessory casing undergoes an oil cut-off test operation; The mechanical system includes: a speed increasing gearbox, a product mounting bracket, an adapter sleeve and a coupling. The speed-increasing gearbox is connected to the motor, the product mounting bracket is installed above the speed-increasing gearbox, and the adapter sleeve is connected to the accessory casing on the product mounting bracket; one end of the coupling is connected to the adapter sleeve, and the other end is connected to the load gearbox. The accessory casing transmits torque through the coupling and the adapter sleeve. The product lubrication system includes: temperature sensor, pressure sensor, flow meter, three-way valve, stop valve and electric pressure regulating valve. The stop valve is set before the oil inlet of the accessory casing lubrication oil inlet pipeline to control the on and off of the air source; The three-way valve is installed on the accessory casing lubrication oil inlet pipeline, one end of which is connected to the oil tank to control the flow of lubricating oil into the oil tank or the accessory casing; The temperature sensor is set at a preset position in front of the lubrication oil inlet pipeline of the accessory casing to monitor the temperature in the product lubrication system in real time; The pressure sensor is installed at a preset position in front of the lubrication oil inlet pipeline of the accessory casing to monitor the pressure in the product lubrication system in real time; The flow meter is installed on the main oil inlet pipeline of the accessory casing to monitor the flow in the product lubrication system in real time; The electric pressure regulating valve is set on the lubrication overflow line of the accessory casing to automatically adjust the oil inlet pressure.

2. The test bench according to claim 1, characterized in that: The temperature sensor is set 500m before the lubrication oil inlet pipeline of the accessory casing.

3. The test bench according to claim 1, characterized in that: The pressure sensor is set 500m before the lubrication oil inlet pipeline of the accessory casing.

4. The test bench according to claim 1, characterized in that: The product lubrication system also includes: oil filter, The oil filter is installed before the lubrication oil inlet pipeline of the accessory casing, and the lubricating oil in the fuel tank is filtered by the oil filter before entering the accessory casing.

5. The test bench according to claim 1, characterized in that: The electrical system includes: PLC and host computer, The PLC is set in the test bench and connected to the host computer. The host computer is equipped with a control system. The host computer controls the PLC so that the PLC controls the three-way valve and the stop valve to work.

6. The test bench according to claim 5, characterized in that: During the normal operation of the test bench, the upper computer controls the stop valve of the air source through PLC to be in the off-circuit state, and the three-way valve of the oil supply is in the state of supplying oil to the accessory casing; during the normal operation of the accessory casing, the upper computer controls the three-way valve to be open, the oil drain line to be closed, the stop valve to be closed, and the oil supply pump to supply oil and lubrication to the accessory casing normally through PLC; when an oil cut-off test is required, the upper computer controls the three-way valve to be closed, the oil drain line to be opened, the stop valve to be opened, the lubricating oil of the oil supply pump to be introduced into the oil drain line, the accessory casing is inflated, and the accessory casing is subjected to an oil cut-off test operation.

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