CN117030257B - An aerospace bearing testing machine - Google Patents

Abstract

The application relates to the technical field of bearing testers, and particularly discloses an aerospace bearing tester which comprises a test bed, a bearing frame and a test motor, wherein the bearing frame and the test motor are positioned on the test bed; the starting mechanism is positioned on the inner wall of the bearing frame; the lubricating mechanism is positioned at the outer side of the bearing frame; the energy storage mechanism is positioned between the starting mechanism and the lubricating mechanism, the starting mechanism slides relative to the surfaces of two sides of the bearing and scrapes the surfaces of two sides of the bearing, and the energy storage mechanism stores energy by utilizing the rotating transmission shaft.

Description

An aerospace bearing testing machine

Technical field

The invention relates to the technical field of bearing testing machines, specifically an aerospace bearing testing machine.

Background technique

In the aerospace field, bearings are usually used in key parts such as engines, landing gear, and control systems. Their stability and reliability need to be ensured. Rotary seals are a form of rotary shaft seals that can rotate with the shaft. Rotary seals The ring can provide better sealing performance and can rotate with the bearing to prevent lubricant leakage and external impurities from entering the inside of the bearing. In the aerospace field, bearings with rotating seal rings include: SKF 17791 bearings, SKF 21061 bearings, SKF 22030 bearings, etc. These bearings use rotating sealing rings to provide better sealing performance and prevent lubricant leakage and external impurities from entering the inside of the bearing. At the same time, these bearings also have the characteristics of high precision, high speed, and high reliability. It is widely used in the aerospace field. Bearing life refers to the number of turns or working hours from the beginning of use to fatigue spalling of a rolling bearing under rotating conditions. It usually refers to the fatigue life. The aerospace bearing testing machine is a kind of Special equipment used to test and evaluate the performance of bearings used in the aerospace field. It can simulate various loads, speeds and temperature conditions under actual working conditions, and detect and analyze the friction, wear, life, etc. of the bearings. Through Using aerospace bearing testing machines, the reliability and durability of bearings can be tested to ensure their safe operation in extreme environments.

Lubricating oil plays a role in lubrication, cooling and reducing friction and wear during the operation of the bearing. When the aerospace bearing testing machine tests the bearing, as the life test proceeds, the lubricating oil inside the bearing will gradually be exhausted. In order to ensure that the bearing To maintain good lubrication status during the entire life test, the tester needs to stop the machine midway to add lubricating oil to keep the lubrication status of the bearing stable and reduce test errors caused by insufficient lubrication.

When adding lubricating oil to the bearing during the bearing life test, the inspection personnel need to stop the testing machine first, then wait for the bearing to cool to the appropriate temperature, find the lubricating oil filling port on the bearing frame, and use a syringe, dropper and other tools to add the appropriate amount of lubrication Add oil directly into the bearing frame and slowly rotate the bearing to make the lubricating oil evenly distributed on the bearing surface. After the lubricating oil is filled, close the lubricating oil filling port, restart the bearing testing machine, and conduct the corresponding life test or However, as the bearing rotates, the lubricating oil will be affected by high temperature and friction. The hydrocarbon compounds in the lubricating oil will undergo pyrolysis and carbonization reactions to generate some solid carbon particles. These carbon particles will accumulate on the surface of the bearing to form Sediments affect the lubrication effect, and certain additives or impurities in the lubricating oil will condense into gel or sediment under high temperature conditions and adhere to the bearing surface, causing the inspector to also It is necessary to scrape the contaminants on the bearing surface, which is difficult for the inspection personnel to operate, and the adding speed of lubricating oil is slow, which affects the efficiency of bearing life inspection. To this end, we propose an aerospace bearing testing machine.

Contents of the invention

The purpose of the present invention is to provide an aerospace bearing testing machine to solve the problems raised in the above background technology.

In order to achieve the above object, the present invention provides the following technical solution: an aerospace bearing testing machine, including a test bench, a bearing frame and a test motor located on the test bench, the inner wall of the bearing frame is fixedly connected to the outer ring of the bearing to be tested, The output end of the test motor is fixedly connected to a transmission shaft fixedly connected to the inner ring of the bearing to be tested; a starting mechanism is installed on the bearing frame, and starts when the test motor is shut down; a lubrication mechanism, The lubrication mechanism is located outside the bearing frame, and the lubrication mechanism injects oil into the oil filling ports on both sides of the bearing and on the surface of the bearing frame; the energy storage mechanism is located between the starting mechanism and the lubrication mechanism, and the energy storage mechanism is used when starting When the mechanism starts, the rotating transmission shaft is used to store energy. When the transmission shaft stops, the energy storage mechanism releases the stored energy and controls the lubrication mechanism to inject oil on the surfaces on both sides of the bearing.

Preferably, a placement groove is provided on the inner wall of the bearing frame. The starting mechanism includes a concave block that slides relatively with the placement groove. An electric cylinder is provided between the concave block and the surface of the placement groove. There are two holes on the surface of the concave block that are connected to the bearing. There are corresponding scraping grooves on each side, each scraping groove is provided with an installation groove on the surface, and a collection piece is provided on the inner wall of each installation groove.

Preferably, the energy storage mechanism includes a transmission wheel that is rotatably connected to the surface of the installation groove. A gear is fixedly connected to the outside of the transmission wheel. The gear is rotatably connected to the surface of the installation groove. The outside of the gear is meshed with a toothed belt, and the toothed belt is away from the end of the gear. There is meshing gear two, which is rotationally connected to the surface of the installation groove. The outside of the gear two is provided with a transmission part that drives the two collecting parts to work at the same time. The outside of the toothed belt is provided with an energy storage part that stores energy when the transmission shaft rotates.

Preferably, the lubrication mechanism includes a storage box slidably connected to the outer surface of the bearing frame. A connecting plate is fixedly connected to the outer side of the storage box. The end of the connecting plate away from the storage box is fixedly connected to the concave block. The connecting plate is slidably connected to the inner wall of the bearing frame. The storage box There is lubricating oil on the inner wall, a one-way valve is fixedly connected to the inner wall of the storage box, a piston plate is slidingly connected to the inner wall of the storage box, the outside of the piston plate is connected to the energy storage component, a transmission pipe is connected to the bottom of the storage box, and the end of the transmission pipe away from the storage box is connected to a Distribution box, with multiple nozzles connected to the outside of the distribution box.

Preferably, there are three nozzles, any one of which is connected to the oil filling port on the surface of the bearing frame, and the other two nozzles are located on both sides of the bearing frame at their ends away from the distribution box.

Preferably, the nozzle outlet is located on the side of the nozzle close to the bearing.

Preferably, the energy storage member includes a push rod fixedly connected to the outside of the piston plate. One end of the push rod away from the piston plate penetrates the storage box and is fixedly connected to a transmission rod. The transmission rod is fixedly connected to the toothed belt. There is a gap between the piston plate and the inner wall of the storage box. Equipped with energy storage spring.

Preferably, the transmission member includes a helical gear one fixedly connected to the outside of the gear two. The end of the helical gear one away from the gear two is fixedly connected with a connecting rod. The connecting rod is rotationally connected to the inner wall of the concave block. The connecting rod is fixed at one end away from the helical gear one. A helical gear two is connected, and the helical gear two is rotationally connected with the inner wall of the concave block. The helical gear one and the helical gear two are meshed with a helical gear three on the outside, and the two helical gears three are respectively connected to the two collection pieces.

Preferably, the collection piece includes a collection box that is slidingly connected to the surface of the concave block. The collection box can be pulled out from the inner wall of the bearing frame. A conveyor belt is provided between the collection box and the scraper groove. The conveyor belt fits the surface of the installation groove. Both ends of the conveyor belt are provided with There is a roller, one end of the roller is rotatably connected to the surface of the installation groove, and the other end of the roller is fixedly connected to the helical gear. There is a separation block slidingly connected to the surface of the conveyor belt. The separation block is located above the collection box, and the separation block is fixedly connected to the surface of the installation groove.

Preferably, the separation block is trapezoidal in shape.

The present invention has at least the following beneficial effects.

When this application is in use, when the monitoring unit on the surface of the test bench detects that the temperature of the bearing to be tested reaches 60°C, the test motor is automatically shut down, and the starting mechanism is controlled to move to both sides of the bearing to be tested, and the still rotating transmission shaft drives the The bearing to be tested continues to rotate, so that the starting mechanism slides relative to the surfaces on both sides of the bearing and scrapes the surfaces on both sides of the bearing, and the energy storage mechanism uses the rotating transmission shaft to store energy. When the transmission shaft stops rotating, the energy storage mechanism releases energy, and controls the lubricating mechanism to inject oil on both sides of the bearing, reducing the workload of the inspection personnel, reducing the difficulty of operation, shortening the time for replenishing lubricating oil in the bearing, improving the efficiency of bearing life inspection, and simulating the normal maintenance of normal aerospace vehicles.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic side view of the structural bearing frame of the present invention.

Figure 3 is a schematic side cross-sectional view of the structural lubrication mechanism of the present invention.

Figure 4 is an enlarged schematic diagram of area A in Figure 3.

Figure 5 is a schematic diagram of the nozzle outlet contraction state of the structure of the present invention.

Figure 6 is a schematic rear view of the structural collection piece of the present invention.

Figure 7 is a schematic diagram of the fitting of the structural concave block and the transmission shaft according to the present invention.

Figure 8 is a schematic front cross-sectional view of the structural concave block of the present invention.

Figure 9 is an enlarged schematic diagram of area B in Figure 8.

Figure 10 is a schematic front cross-sectional view of the structural concave block and the transmission shaft of the present invention in a state of fit.

Figure 11 is a schematic diagram of the connection between the structural concave block and the storage box of the present invention.

Figure 12 is a schematic side view of the structural energy storage mechanism of the present invention.

Figure 13 is a schematic structural diagram of the structural transmission component of the present invention.

Figure 14 is a schematic diagram of the third embodiment.

In the picture: 1-test bench; 2-bearing frame; 20-placement slot; 3-test motor; 4-drive shaft; 5-starting mechanism; 50-concave block; 51-electric cylinder; 52-scraper groove; 53 -Installation slot; 54-collection piece; 55-collection box; 56-conveyor belt; 57-roller; 58-separation block; 59-rubber pad; 6-lubricating mechanism; 60-storage box; 61-connecting plate; 62-lubrication Oil; 63-one-way valve; 64-piston plate; 65-transmission pipe; 66-distribution box; 67-nozzle; 7-energy storage mechanism; 70-transmission wheel; 71-gear one; 72-toothed belt; 73-Gear two; 74-Transmission part; 75-Energy storage part; 76-Push rod; 77-Transmission rod; 78-Energy storage spring; 79-Helical gear one; 710-Connecting rod; 711-Helical gear two; 712 -Helical gear three.

Detailed ways

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

Embodiment 1

Please refer to Figures 1-13. The present invention provides a technical solution: an aerospace bearing testing machine, including a test bench 1, a bearing frame 2 and a test motor 3 located on the test bench 1. The inner wall of the bearing frame 2 is in contact with the surface to be tested. The outer ring of the bearing is fixedly connected, and the output end of the test motor 3 is fixedly connected with a transmission shaft 4 that is fixedly connected with the inner ring of the bearing to be tested; a starting mechanism 5, the starting mechanism 5 is installed on the bearing frame 2, and the starting mechanism 5 is installed on the bearing frame 2 during the test. The motor 3 starts when it is shut down; the lubrication mechanism 6 is located outside the bearing frame 2, and the lubrication mechanism 6 injects oil into the oil filling ports on both sides of the bearing and the surface of the bearing frame 2; the energy storage mechanism 7 is located at the start-up position. Between the mechanism 5 and the lubrication mechanism 6, the energy storage mechanism 7 uses the rotating transmission shaft 4 to store energy when the starting mechanism 5 starts. When the transmission shaft 4 stops, the energy storage mechanism 7 releases the stored energy and The lubrication mechanism 6 is controlled to inject oil onto the surfaces on both sides of the bearing;

When in use, the bearing to be tested is installed between the transmission shaft 4 and the bearing frame 2, the monitoring unit and the loading unit on the surface of the test bench 1 are connected to the bearing to be tested, and the bearing to be tested is used during the test through the existing monitoring unit. Monitor information such as rotation speed, temperature, vibration, etc., and simulate the actual use environment of aerospace bearings by loading radial force, axial force, and vibration force on the bearing during testing in one direction, thereby evaluating the performance of the bearing in the actual use environment. performance and durability, and as the bearing rotates, the lubricating oil 62 on the bearing surface will be continuously consumed. When the lubricating oil 62 on the bearing surface is consumed, the bearing friction coefficient will increase, and the heat generated by friction will intensify the rise of the bearing temperature. High. When the bearing temperature reaches 60°C, this temperature is the temperature at which most bearings begin to lose effective lubrication and may begin to suffer excessive wear or thermal damage. At this time, the test bench 1 controls the test motor 3 to shut down, and the transmission shaft 4 is under the action of inertia. It will still rotate for a period of time, and at the same time, the starting mechanism 5 is controlled to move to both sides of the bearing to be tested. The still rotating transmission shaft 4 will drive the bearing to be tested to continue rotating, so that the starting mechanism 5 pushes the energy storage mechanism 7 to the transmission shaft 4 after starting. On the outside, the energy storage mechanism 7 uses the rotating transmission shaft 4 to store energy. When the transmission shaft 4 stops rotating, the energy storage mechanism 7 releases the energy and controls the lubricating mechanism 6 to inject oil on the surfaces on both sides of the bearing, reducing the workload of the inspection personnel. Reduce the difficulty of operation, shorten the time for replenishing lubricating oil 62 in the middle of the bearing, improve the efficiency of bearing life detection, and simulate the normal maintenance of normal aerospace vehicles.

A placement groove 20 is provided on the inner wall of the bearing frame 2. The starting mechanism 5 includes a concave block 50 that slides relative to the placement groove 20. The electric cylinder 51 is located between the concave block 50 and the surface of the placement groove 20. One end of the electric cylinder 51 is connected to the concave block. 50 is fixedly connected, and the other end of the electric cylinder 51 is fixedly connected to the surface of the placement groove 20. Two rubber pads 59 are fixedly connected to both sides of the concave block 50 near the bearing. There are two rubber pads 59 on the surface of the concave block 50, respectively with both sides of the bearing. Corresponding scraping groove 52, each scraping groove 52 is provided with a mounting groove 53 on the surface, and a collecting piece 54 is provided on the inner wall of each mounting groove 53, so that the starting mechanism 5 can also slide relative to the surfaces on both sides of the bearing, and can slide against the surfaces on both sides of the bearing. perform scraping;

When the bearing temperature reaches 60°C, the test bench 1 controls the test motor 3 to shut down. At the same time, the test bench 1 controls the electric cylinder 51 to extend. The electric cylinder 51 extends to push the concave block 50 to move upward along the inner wall of the placement slot 20, making the concave block 50 move upward. The shape block 50 moves to both sides of the bearing to be tested. Since the rubber pad 59 itself is elastic and the rubber pad 59 is in a compressed state when it is in the placement groove 20, when the rubber pad 59 slides out of the placement groove 20, the rubber pad 59 The automatic deformation unfolds so that the rubber pad 59 sticks to the bearing surface. When the test motor 3 is shut down, the transmission shaft 4 will continue to rotate under the action of inertia. The rotating transmission shaft 4 drives the bearing to be tested to continue to rotate, causing the bearing to contact the concave block. 50 slide relative to each other. When the bearing rotates, the impurities on the bearing surface will be separated from the bearing under the action of the scraping groove 52 when passing through the scraping groove 52 and move along the slope of the surface of the scraping groove 52 into the collection part 54. The scraping part 54 will The impurities scraped by the groove 52 are collected, thereby completing the scraping of the impurities on the bearing surface. There is no need for the staff to wait for the bearing to cool down before scraping the impurities on the bearing surface, which reduces the workload of the staff;

After the bearing is replenished with lubricating oil 62, the electric cylinder 51 automatically shrinks to drive the concave block 50 to move downward along the inner wall of the placement groove 20. The concave block 50 drives the rubber pad 59 to move downward, so that the rubber pad 59 is in contact with the surface of the placement groove 20. Pressing each other, the rubber pad 59 fits on the surface of the concave block 50 and slides downward along the inner wall of the placement groove 20 to reset.

The energy storage mechanism 7 includes a transmission wheel 70 that is rotatably connected to the surface of the mounting groove 53. A gear 71 is fixedly connected to the outside of the transmission wheel 70. The gear 71 is rotatably connected to the surface of the mounting groove 53. A toothed belt 72 is engaged with the outside of the gear 71. The end of the toothed belt 72 away from the gear one 71 is meshed with a second gear 73. The second gear 73 is rotatably connected to the surface of the mounting groove 53. A transmission member 74 is provided on the outside of the second gear 73 to drive the two collecting parts 54 at the same time. The outer side of the toothed belt 72 An energy storage component 75 is provided that stores energy when the transmission shaft 4 rotates;

When the concave block 50 moves to both sides of the bearing to be tested, the concave block 50 drives the transmission wheel 70 to move upward and stick to the surface of the transmission shaft 4. When the test motor 3 is shut down, the transmission shaft 4 will continue to operate under the action of inertia. Rotate, so that the transmission shaft 4 drives the outside-fitting transmission wheel 70 to rotate while driving the bearing to be tested to rotate. The transmission wheel 70 drives the gear one 71 to rotate, the gear one 71 drives the toothed belt 72 to rotate, and the toothed belt 72 drives the gear two. 73 rotates, and the second gear 73 rotates to drive the transmission part 74 to work. The transmission part 74 drives the two collecting parts 54 to work at the same time to cooperate with the collecting part 54 to collect the impurities scraped by the scraping groove 52, and the toothed belt 72 rotates to drive the storage. Energy component 75 starts storing energy;

Under the action of frictional resistance, the kinetic energy of the transmission shaft 4 is gradually consumed. When the transmission shaft 4 stops rotating, the energy storage member 75 begins to release energy to drive the toothed belt 72 to move in the reverse direction, and the toothed belt 72 drives the gear. The first gear 71 and the second gear 73 rotate in reverse, and the gear one 71 drives the transmission wheel 70 to reverse. Since the transmission wheel 70 is attached to the surface of the transmission shaft 4, the transmission wheel 70 reverses and drives the transmission shaft 4 to reverse, and the transmission shaft 4 reversely drives the waiting gear. The bearing under test rotates in reverse, thereby cooperating with the lubricating mechanism 6 to add lubricating oil 62 to the surface of the bearing to be measured, and the lubricating oil 62 infiltrates into the interior of the bearing through the gap on the bearing surface to be measured to cooperate with the replenishment of lubricating oil 62 to the bearing.

The lubrication mechanism 6 includes a storage box 60 that is slidingly connected to the outer surface of the bearing frame 2. A connecting plate 61 is fixedly connected to the outer side of the storage box 60. The connecting plate 61 is fixedly connected to the concave block 50 at one end away from the storage box 60. The connecting plate 61 is connected to the bearing frame. 2. The inner wall is slidingly connected. The inner wall of the storage box 60 stores lubricating oil 62. The inner wall of the storage box 60 is fixedly connected with a one-way valve 63. The inner wall of the storage box 60 is slidingly connected with a piston plate 64. The piston plate 64 is located above the one-way valve 63. The piston plate The outer side of 64 is connected to the energy storage member 75. The bottom of the storage box 60 is connected with a transmission pipe 65. One end of the transmission pipe 65 away from the storage box 60 is connected with a distribution box 66. The outer side of the distribution box 66 is connected with a plurality of nozzles 67. The nozzle 67 is provided with three Any one of the nozzles 67 is connected to the oil filling port on the surface of the bearing frame 2. The other two nozzles 67 have ends far away from the distribution box 66 and are respectively located on both sides of the bearing frame 2. The ends of the nozzles 67 located on both sides of the bearing frame 2 are in the shape of Corrugated, the outlet of the nozzle 67 is located on the side of the nozzle 67 close to the bearing. When it is not filled with oil, the corrugated nozzle 67 shrinks, so that the outlet of the nozzle 67 is covered, preventing the outlet of the nozzle 67 from being exposed for a long time;

When in use, the one-way valve 63 is a mature existing technology on the market. This valve usually consists of a valve body, a piston and a spring. When the medium flows, the piston will move along the valve body, opening the valve and allowing The medium flows. When the medium flow reverses, the spring will push the piston back to its original position to close the valve. The one-way valve 63 allows the medium to pass from the outside to the storage box 60. The staff can pass the one-way valve 63 Replenish lubricating oil 62 in the two-way storage box 60;

When the lubrication mechanism 6 is working, the energy storage member 75 pushes the piston plate 64 to slide downward along the inner wall of the storage box 60, thereby pushing the lubricating oil 62 on the inner wall of the storage box 60 into the distribution box 66 through the transmission pipe 65, and the distribution box 66 is hollow. shape and connected with the three nozzles 67 on the outside, so that the lubricating oil 62 entering the distribution box 66 can enter the three nozzles 67 respectively, and a part of the lubricating oil 62 enters the oil filling port on the surface of the bearing frame 2 through the nozzle 67 , the oil filling port on the surface of the bearing frame 2 sends the lubricating oil 62 to the bearing surface inside the bearing frame 2. At the same time, the lubricating oil 62 in the distribution chamber will also enter the nozzles 67 on both sides of the bearing frame 2, and the lubricating oil 62 moves to the nozzle After the end of the tube 67, since the outlet of the nozzle 67 is located on the side of the nozzle 67, and the corrugated part is contracted, the outlet of the nozzle 67 is blocked, so the lubricating oil 62 will push the nozzle 67 to expand, causing the nozzle 67 to extend. The lubricating oil 62 is sprayed onto the bearing surface through the outlet of the expanded nozzle 67. After the lubricating oil 62 adheres to the bearing surface, the energy storage component 75 will drive the toothed belt 72 to reverse, and the toothed belt 72 will drive the gear. 71 reverses, gear one 71 drives the transmission wheel 70 to reverse, the transmission wheel 70 fits with the transmission shaft 4 to drive the transmission shaft 4 to reverse, and then the transmission shaft 4 drives the bearing to be tested to reverse, so that the lubricating oil 62 can be coated At different positions on the bearing surface, and the bearing reverses, it will pass through the concave block 50, and the lubricating oil 62 on the bearing surface is spread through the end of the concave block 50 away from the scraper 52, so that the lubricating oil 62 can penetrate into the bearing through the gaps on the bearing surface. Internally, the bearing can be replenished with lubricating oil 62, thereby reducing the workload of inspection personnel, reducing the difficulty of operation, shortening the time for replenishing lubricating oil 62 of the bearing midway, improving the efficiency of bearing life inspection, and simulating the normal maintenance of normal aerospace vehicles.

The energy storage member 75 includes a push rod 76 fixedly connected to the outside of the piston plate 64. One end of the push rod 76 away from the piston plate 64 penetrates the storage box 60 and is fixedly connected to a transmission rod 77. The transmission rod 77 is fixedly connected to the toothed belt 72 to store energy. The spring 78 is located between the piston plate 64 and the inner wall of the storage box 60. Both ends of the energy storage spring 78 are fixedly connected to the piston plate 64 and the inner wall of the storage box 60 respectively. The energy storage spring 78 is located outside the push rod 76;

When the test motor 3 is shut down, the transmission shaft 4 will still rotate due to the effect of inertia. Since the transmission wheel 70 is driven by the concave block 50 and fits the surface of the transmission shaft 4, the transmission shaft 4 drives the transmission wheel 70 to rotate. The wheel 70 drives the gear one 71 to rotate, the gear one 71 drives the toothed belt 72 to rotate, the toothed belt 72 drives the transmission rod 77 to slide along the concave block 50 and the inner wall of the bearing frame 2 respectively, and the transmission rod 77 drives the push rod 76 to move upward. The push rod 76 drives the piston plate 64 to slide upward along the inner wall of the storage box 60 to compress the energy storage spring 78, so that the air in the nozzle 67 enters the storage box 60 through the transmission tube 65;

When the power of the transmission shaft 4 is consumed, the energy storage spring 78 in the compressed state pushes the piston plate 64 to slide downward along the inner wall of the storage box 60 , and the piston plate 64 pushes the lubricating oil 62 in the storage box 60 into the transmission pipe 65 , and the piston plate 64 moves downward to drive the push rod 76 to move, the push rod 76 drives the transmission rod 77 to move, the transmission rod 77 drives the toothed belt 72 to rotate reversely, thereby driving the gear one 71 and the second gear 73 through the toothed belt 72 to rotate reversely. rotation, the gear 71 drives the transmission wheel 70 to reversely rotate. Since the transmission wheel 70 is fit with the transmission shaft 4, the transmission wheel 70 drives the transmission shaft 4 to reversely rotate. The transmission shaft 4 drives the bearing to reversely rotate, so that the lubricating oil 62 can adhere to it. to different locations on the bearing surface.

The transmission member 74 includes a helical gear 79 fixedly connected to the outside of the gear 2 73. The helical gear 79 is fixedly connected to a connecting rod 710 at one end away from the gear 2 73. The connecting rod 710 is rotationally connected to the inner wall of the concave block 50, and the connecting rod 710 is away from the bevel gear 710. One end of gear one 79 is fixedly connected with helical gear two 711. Helical gear two 711 is rotationally connected with the inner wall of concave block 50. Helical gear one 79 and helical gear two 711 are meshed with helical gear three 712 on the outside. The two helical gears 712 are respectively Connected with two collection pieces 54;

When the test motor 3 is shut down, the transmission shaft 4 will still rotate due to the effect of inertia. The transmission shaft 4 drives the transmission wheel 70 to rotate, the transmission wheel 70 drives the gear 71 to rotate, the gear 71 drives the toothed belt 72 to rotate, and the toothed belt 72 drives gear two 73 to rotate, gear two 73 drives helical gear one 79 to rotate, helical gear one 79 drives helical gear two 711 to rotate synchronously through connecting rod 710, so that helical gear one 79 and helical gear two 711 can drive the outer helical gear respectively. Gear three 712 rotates, and the collecting part 54 works through the helical gear three 712, so that the collecting part 54 collects the impurities scraped by the scraping groove 52.

Embodiment 2

The collection piece 54 includes a collection box 55 that is slidingly connected to the surface of the concave block 50 . The collection box 55 and the surface of the concave block 50 are clamped by friction, so that when the concave block 50 slides along the inner wall of the placement groove 20 , the concave block 50 The collection box 55 can be driven to slide along the inner wall of the bearing frame 2. The collection box 55 can be extracted from the inner wall of the bearing frame 2. The conveyor belt 56 is located between the collection box 55 and the scraping groove 52. The conveyor belt 56 is surface-fitted with the installation groove 53. The two rollers 57 are respectively located at both ends of the conveyor belt 56. One end of the roller 57 is rotatably connected to the surface of the installation groove 53. The other end of the roller 57 is fixedly connected to the helical gear 3712. The surface of the conveyor belt 56 is slidingly connected with a separation block 58. The separation block 58 is trapezoidal in shape. 58 is located above the collection box 55, and the separation block 58 is fixedly connected to the surface of the installation groove 53;

When the test motor 3 is shut down, the rotation of the helical gear 3712 drives the roller 57 to rotate, and the roller 57 drives the conveyor belt 56 to rotate, so that the conveyor belt 56 transports the impurities scraped by the scraping groove 52 downward, and the impurities on the surface of the conveyor belt 56 move to the separation block 58 When in the position, the impurities can be guided into the outer collection box 55 through the slope of the separation block 58, thereby keeping the surface of the conveyor belt 56 scratched. The staff regularly pulls out the collection box 55 from the inner wall of the bearing frame 2 to scrape the collected impurities. wipe;

When the power of the transmission shaft 4 is consumed, the energy storage spring 78 in the compressed state pushes the piston plate 64 to slide downward along the inner wall of the storage box 60 , and the piston plate 64 pushes the lubricating oil 62 in the storage box 60 into the transmission pipe 65 , and the piston plate 64 moves downward to drive the push rod 76 to move, the push rod 76 drives the transmission rod 77 to move, the transmission rod 77 drives the toothed belt 72 to rotate reversely, thereby driving the gear one 71 and the second gear 73 through the toothed belt 72 to rotate reversely. rotation, gear two 73 drives helical gear one 79 to reverse, helical gear one 79 drives helical gear two 711 to reverse through connecting rod 710, helical gear one 79 and helical gear two 711 drive two helical gears three 712 to reverse respectively, helical gear one 79 Gear three 712 drives the roller 57 to reversely rotate, and the roller 57 drives the conveyor belt 56 to reversely rotate, and the surface of the conveyor belt 56 is scraped again through the bevel at the bottom of the separation block 58 .

Embodiment 3

As shown in Figure 14, in the second embodiment, other structures remain unchanged. The difference from the first embodiment is that the inner diameter of the transmission pipe 65 gradually becomes smaller along the direction from the gas storage box to the distribution bin, so that gas and liquid can pass through this section of the transmission pipe 65 The flow velocity increases later, making it easier to unfold the corrugated portion at the end of the nozzle 67.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. An aerospace bearing testing machine, including: A test bench (1), as well as a bearing frame (2) and a test motor (3) located on the test bench (1). The inner wall of the bearing frame (2) is fixedly connected to the outer ring of the bearing to be tested, and the test motor (3) ) The output end is fixedly connected to a transmission shaft (4) fixedly connected to the inner ring of the bearing to be tested; Its characteristics are: Starting mechanism (5), the starting mechanism (5) is installed on the bearing frame (2), and the starting mechanism (5) starts when the test motor (3) is shut down; Lubrication mechanism (6), the lubrication mechanism (6) is located outside the bearing frame (2), and the lubrication mechanism (6) injects oil into the oil filling ports on both sides of the bearing and on the surface of the bearing frame (2); Energy storage mechanism (7), the energy storage mechanism (7) is located between the starting mechanism (5) and the lubrication mechanism (6). When the starting mechanism (5) starts, the energy storage mechanism (7) uses the rotating The transmission shaft (4) stores energy. When the transmission shaft (4) stops, the energy storage mechanism (7) releases the stored energy and controls the lubrication mechanism (6) to inject oil on the surfaces on both sides of the bearing; A placement groove (20) is provided on the inner wall of the bearing frame (2). The starting mechanism (5) includes a concave block (50) that slides relatively with the placement groove (20). The concave block (50) is in contact with the placement groove (20). An electric cylinder (51) is provided between the surfaces of the grooves (20). The surface of the concave block (50) is provided with two scraping grooves (52) corresponding to both sides of the bearing. Each of the scraping grooves (52) ) are provided with installation grooves (53) on the surface, and the inner wall of each installation groove (53) is provided with a collection piece (54); The energy storage mechanism (7) includes a transmission wheel (70) that is rotatably connected to the surface of the installation groove (53). A gear one (71) is fixedly connected to the outside of the transmission wheel (70). The gear one (71) is connected to the The surface of the mounting groove (53) is rotatably connected. The outer side of the gear one (71) is meshed with a toothed belt (72). The end of the toothed belt (72) away from the gear one (71) is meshed with the gear two (73). The second gear (73) is rotatably connected to the surface of the installation groove (53). The outer side of the second gear (73) is provided with a transmission part (74) that drives the two collecting parts (54) to work at the same time. The toothed belt (72) ) The outer side is provided with an energy storage component (75) that stores energy when the transmission shaft (4) rotates; The transmission member (74) includes a helical gear one (79) fixedly connected to the outside of the gear two (73). The end of the helical gear one (79) away from the gear two (73) is fixedly connected with a connecting rod (710), so The connecting rod (710) is rotationally connected to the inner wall of the concave block (50). The end of the connecting rod (710) away from the helical gear one (79) is fixedly connected with the helical gear two (711). The helical gear two (711) Rotally connected to the inner wall of the concave block (50), the helical gear one (79) and the helical gear two (711) are meshed with the helical gear three (712) on the outside, and the two helical gears three (712) are respectively connected with the two helical gears (712). The collection pieces (54) are connected. 2. The aerospace bearing testing machine according to claim 1, characterized in that: the lubrication mechanism (6) includes a storage box (60) slidingly connected to the outer surface of the bearing frame (2), the storage box (60) ) is fixedly connected to a connecting plate (61) on the outside. One end of the connecting plate (61) away from the storage box (60) is fixedly connected to the concave block (50). The connecting plate (61) slides with the inner wall of the bearing frame (2). connection, the inner wall of the storage box (60) is provided with lubricating oil (62), the inner wall of the storage box (60) is fixedly connected with a one-way valve (63), and the inner wall of the storage box (60) is slidingly connected with a piston plate ( 64), the outer side of the piston plate (64) is connected to the energy storage member (75), the bottom of the storage box (60) is connected with a transmission tube (65), and the end of the transmission tube (65) away from the storage box (60) A distribution box (66) is communicated with the distribution box (66), and a plurality of nozzles (67) are communicated with the outside of the distribution box (66). 3. The aerospace bearing testing machine according to claim 2, characterized in that: there are three nozzles (67), and any one of the nozzles (67) is connected to the oil filling port on the surface of the bearing frame (2) , the other two nozzle pipes (67) have one end far away from the distribution box (66) and are respectively located on both sides of the bearing frame (2). 4. The aerospace bearing testing machine according to claim 3, characterized in that: the outlet of the nozzle (67) is located on the side of the nozzle (67) close to the bearing. 5. The aerospace bearing testing machine according to claim 2, characterized in that: the energy storage component (75) includes a push rod (76) fixedly connected to the outside of the piston plate (64), and the push rod (76) ) one end away from the piston plate (64) penetrates the storage box (60) and is fixedly connected to a transmission rod (77). The transmission rod (77) is fixedly connected to the toothed belt (72), and the piston plate (64) is connected to the storage box (60). An energy storage spring (78) is provided between the inner walls of the box (60). 6. The aerospace bearing testing machine according to claim 1, characterized in that: the collection piece (54) includes a collection box (55) slidingly connected to the surface of the concave block (50), and the collection box (55) ) can be extracted from the inner wall of the bearing frame (2). A conveyor belt (56) is provided between the collection box (55) and the scraper groove (52). The conveyor belt (56) is surface-fitted with the installation groove (53), so The conveyor belt (56) is provided with rollers (57) at both ends. One end of the roller (57) is rotatably connected to the surface of the installation groove (53), and the other end of the roller (57) is fixedly connected to the helical gear three (712). A separation block (58) is slidably connected to the surface of the conveyor belt (56). The separation block (58) is located above the collection box (55). The separation block (58) is fixedly connected to the surface of the installation groove (53). 7. The aerospace bearing testing machine according to claim 6, characterized in that the separation block (58) is trapezoidal in shape.