Booster type oiling device for airplane wheel bearing

Abstract

The invention belongs to the technical field of aircraft manufacturing, and relates to an aircraft wheel bearing pressurizing type oiling device which comprises a cabinet, an oiling system, an oiling base, a pressing rod and a quick clamp. The cabinet is a hollow rectangular cabinet body with an openable door; the oil injection system is placed in the cabinet; the upper surface of the cabinet is provided with an oiling seat; an oiling nozzle is arranged below the oiling seat and is connected with an oiling system; a bearing to be oiled is placed in the oiling seat; the quick clamp is fixed to the upper surface of the cabinet and clamps the pressing rod, and the bearing to be lubricated is pressed in the oil injection base through the pressing rod.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft manufacturing and relates to a pressurized oil injection device for an aircraft wheel bearing. Background Art

[0002] Aircraft wheels are important components of aircraft. The mechanical properties of wheels are one of the important factors affecting the safety and quality of aircraft, and the wear degree of wheel bearings is an important factor affecting the safe and reliable operation of wheels.

[0003] During aircraft wheel maintenance, staff will regularly inject grease into the wheel bearings to reduce the friction coefficient of the bearings during use and reduce the friction force borne by the rollers, so as to reduce bearing wear and extend the service life of the bearings, thereby improving the mechanical properties of the aircraft wheels.

[0004] In the past, workers mainly injected grease into wheel bearings manually. During the injection process, there were problems such as uneven injection or uneven application, large amount of grease waste, high labor intensity, and low work efficiency. In addition, during the injection process, workers inevitably come into contact with grease, which is difficult to clean, and long-term contact will affect human health. Summary of the invention

[0005] The purpose of the invention is to overcome the shortcomings of the existing aircraft wheel bearing oiling operation and provide a fast, portable and safe aircraft wheel bearing oiling device.

[0006] Technical Solution

[0007] A pressurized oil filling device for an aircraft wheel bearing, comprising: a cabinet, an oil filling system, an oil filling seat, a pressure rod, and a quick clamp;

[0008] The cabinet is a hollow rectangular cabinet with an openable door; the oil filling system is placed inside the cabinet;

[0009] An oil filling seat is installed on the upper surface of the cabinet, and an oil filling nozzle is provided below the oil filling seat to connect with the oil filling system;

[0010] The bearing to be oiled is placed in the oiling seat;

[0011] The quick clamp is fixed on the upper surface of the cabinet, and the quick clamp clamps the pressure rod, and the bearing to be lubricated is pressed into the oil filling seat through the pressure rod.

[0012] Furthermore, the pressure rod is installed on the support arm of the quick clamp, and the lifting and lowering of the pressure rod or the movement along the support arm direction is adjusted by the nut on the support arm, so as to adjust the distance between the pressure rod and the oil filling seat, and the pressure rod is lubricated.

[0013] Further, the oil filling seat comprises: a mounting seat, a sealing gasket and a sealing head;

[0014] The end cover is a hemispherical shell, the end face of the end cover is provided with a flange edge, the bottom of the end cover is provided with an oil injection nozzle, and the flange edge is provided with bolt holes;

[0015] The mounting seat comprises a circular flat plate and an annular cylinder connected as one body; the edge of the circular flat plate is provided with bolt holes;

[0016] The mounting seat and the sealing head are respectively arranged on both sides of the upper surface of the cabinet and are connected by bolts.

[0017] Further, the circular plate is provided with a circle of oil filling holes;

[0018] The diameter of the circle formed by the line connecting the oil filling holes is the same as the diameter of the circle formed by the line connecting the bearing rollers.

[0019] Further, the pressure rod includes: a ball screw, a split clamp and a pressure plate;

[0020] The pressure plate is a circular flat plate with a boss, and the size of the pressure plate is larger than the outer ring of the bearing to be lubricated; a ball socket is provided at the center of the boss, and two threaded holes are provided on both sides of the ball socket;

[0021] The split clamp is in the shape of a ring, with a through hole in the middle for sleeved on the ball screw, and two through holes on the edge;

[0022] The screw part of the ball screw is threadedly connected with the nut on the quick clamp arm, the ball head at the lower end of the ball screw is placed in the ball socket of the pressure plate, the split clamp is sleeved on the ball screw and connected to the pressure plate by bolts, and the split clamp is used to prevent the ball screw from falling out.

[0023] Furthermore, the oil injection system includes: a boost oil injector, a chassis, an oil distribution switch, a limit pin, and a hose;

[0024] The supercharger oiler is used to store lubricating oil, and the supercharger oiler is fixed on the chassis through a limit pin;

[0025] The oil outlet of the booster oiler is connected to one end of a hose, and the other end of the hose is connected to the oil filling nozzle under the oil filling seat;

[0026] An oil separation switch is provided on the hose.

[0027] Furthermore, there are N oil filling seats, and the N oil filling seats have the same structure but different sizes.

[0028] Furthermore, N pressure rods are provided, which are matched with the N oil filling seats respectively.

[0029] Furthermore, the oil distribution switch has one inlet and N outlets; the inlet is connected to the oil outlet of the booster oiler through a hose, and the N outlets are respectively connected to the oil filling nozzles of the N oil filling seats.

[0030] Furthermore, it also includes: a wrench, which is arranged in the cabinet door and is used to take and place the bearing to be lubricated.

[0031] Beneficial effects: The present invention provides a pressurized oil injection device for an aircraft wheel bearing, which is easy to move and operate, not only reducing the labor intensity of the staff and improving the work efficiency, but also avoiding the physical and mental harm caused by the contact between the staff and the grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention includes 5 drawings, and the drawings and the descriptions of the drawings are as follows:

[0033] Figure 1 This is a schematic diagram of the structure of a pressurized oil injection device for a wheel bearing;

[0034] Figure 2 It is a schematic diagram of the small pressure rod structure;

[0035] Figure 3 This is a schematic diagram of the structure of a small oil filling seat;

[0036] Figure 4 It is a schematic diagram of the cabinet structure;

[0037] Figure 5 Schematic diagram of the pressurized oil injection system architecture.

[0038] Among them: 1 quick clamp, 2 small pressure rod, 3 small oil filling seat, 4 cabinet, 5 caster, 6 large pressure rod, 7 large oil filling seat, 8 wrench, 9 oil filling system; 2-1 ball screw, 2-2 split clamp, 2-3 small pressure plate; 3-1 small mounting seat, 3-2 sealing gasket, 3-3 small head; 4-1 box, 4-2 clamp seat, 4-3 panel, 4-4 cabinet door, 4-5 door lock, 4-6 wrench seat, 4-7 slide rail slider, 4-8 bottom plate, 9-1 hose, 9-2 plugging cap, 9-3 oil distribution switch, 9-4 booster oiler, 9-5 limit pin, 9-6 chassis. DETAILED DESCRIPTION

[0039] like Figure 1 As shown, a pressurized oil filling device for aircraft wheel bearings includes nine components: a quick clamp 1, a small pressure rod 2, a small oil filling seat 3, a cabinet 4, a caster 5, a large pressure rod 6, a large oil filling seat 7, a wrench 8, an oil filling system 9, and the like.

[0040] The small pressure rod 2 and the large pressure rod 6 are installed on the support arm of the quick clamp 1. The nut on the support arm can adjust the small pressure rod 2 and the large pressure rod 6 to rise and fall or move along the direction of the support arm. The purpose is to adjust the distance between the quick clamp 1 and the small oil filling seat 3 and the large oil filling seat 7, and ensure that the wheel bearing is pressed tightly in the small oil filling seat 3 or the large oil filling seat 7.

[0041] The caster 5 is installed at the bottom of the cabinet 4 and adopts a universal brake wheel to facilitate the free steering, movement and self-locking of the entire wheel bearing oiling device.

[0042] The wrench 8 is placed on the door of the cabinet 4. Since the small oiling seat 3 or the large oiling seat 7 for placing the wheel bearing is made according to the outer expansion size of the wheel bearing, the wrench 8 is needed to take and put when the wheel bearing is oiled. The oiling system 9 is the core component of the wheel bearing oiling device of the present invention, which is used to store grease. When in use, the grease is pressurized and squeezed into the small oiling seat 3 or the large oiling seat 7 to complete the oiling operation of the aircraft wheel bearing.

[0043] like Figure 2 As shown, the small pressure rod 2 is composed of a ball screw 2-1, a split clamp 2-2, and a small pressure plate 2-3. The ball head portion of the ball screw 2-1 is to allow the small pressure plate 2-3 to fit tightly with the wheel bearing, and the screw portion is configured according to the nut specifications on the arm of the quick clamp 1. The split clamp 2-2 is fixedly connected to the small pressure plate 2-3 to prevent the ball screw 2-1 from separating from the small pressure plate 2-3. The large pressure rod 6 has the same structure as it.

[0044] like Figure 3 As shown, the small oil filling seat 3 is composed of a small mounting seat 3-1, a sealing gasket 3-2, and a small head 3-3. The small mounting seat 3-1 and the small head 3-3 are respectively mounted on the inner and outer sides of the panel 4-3 of the cabinet 4, and are sealed with a sealing gasket 3-2 to prevent the grease from leaking out. The bottom of the small mounting seat 3-1 is formed with oil filling holes, which are evenly arranged, and the diameter of the circle formed by the oil filling holes is consistent with the diameter of the circle formed by the roller of the wheel bearing, so as to evenly fill the grease. The large oil filling seat 7 has the same structure as it.

[0045] like Figure 4 As shown, the cabinet 4 is composed of a box body 4-1, a clamp seat 4-2, a panel 4-3, a cabinet door 4-4, a door lock 4-5, a wrench seat 4-6, a slide block 4-7, and a bottom plate 4-8. The box body 4-1 is welded by angle steel to form a frame, thin steel plates are installed on three sides of the box body, the cabinet door 4-4 is installed on one side, the panel 4-7 is installed on the top outer side, and the bottom plate 4-8 is installed on the bottom inner side. The clamp seat 4-2 is installed on the panel 4-3 for the installation of the quick clamp 1. The door lock 4-5 is a lever type, which is convenient for the opening and closing of the cabinet door 4-4. The wrench seat 4-6 is used to place the wrench 8. The slide block 4-7 is installed on the bottom plate 4-8 to facilitate the pulling and drawing of the booster oiler 9-4.

[0046] like Figure 5 As shown, the oil injection system 9 is composed of a hose 9-1, a plug cap 9-2, an oil distributor switch 9-3, a booster oil injector 9-4, a limit pin 9-5, and a chassis 9-6. The oil inlet of the oil distributor switch 9-3 is connected to the booster oil injector 9-4; two of the oil outlets are connected by a hose 9-1 and a small oil injection seat 3 and a large oil injection seat 3, and the other one is blocked by a plug cap 9-2. The limit pin 9-5 is used to fix the booster oil injector 9-4 to prevent the booster oil injector 9-4 from moving during use. The chassis 9-6 is fixedly connected to the slide rail slider 4-7 to facilitate the pulling and drawing of the booster oil injector 9-4.

Claims

1. A pressurized oil injection device for an aircraft wheel bearing, characterized in that: include: Cabinets, oil filling system, oil filling seat, pressure rod, quick clamp; The cabinet is a hollow rectangular cabinet with an openable door; the oil filling system is placed inside the cabinet; An oil filling seat is installed on the upper surface of the cabinet, and an oil filling nozzle is provided below the oil filling seat to connect with the oil filling system; The bearing to be oiled is placed in the oiling seat; The quick clamp is fixed on the upper surface of the cabinet, and the quick clamp clamps the pressure rod, and the bearing to be lubricated is pressed into the oil filling seat through the pressure rod.

2. The device according to claim 1, characterized in that: The pressure rod is installed on the support arm of the quick clamp. The nut on the support arm is used to adjust the lifting and lowering of the pressure rod or its movement along the support arm, thereby adjusting the distance between the pressure rod and the oil filling seat and pressing the bearing to be lubricated.

3. The device according to claim 2, characterized in that: The oil filling seat includes: a mounting seat, a sealing gasket and a head; The end cover is a hemispherical shell, the end face of the end cover is provided with a flange edge, the bottom of the end cover is provided with an oil injection nozzle, and the flange edge is provided with bolt holes; The mounting seat comprises a circular flat plate and an annular cylinder connected as one body; the edge of the circular flat plate is provided with bolt holes; The mounting seat and the sealing head are respectively arranged on both sides of the upper surface of the cabinet and are connected by bolts.

4. The device according to claim 3, characterized in that: The circular flat plate is provided with a circle of oil filling holes; The diameter of the circle formed by the line connecting the oil filling holes is the same as the diameter of the circle formed by the line connecting the bearing rollers.

5. The device according to claim 4, characterized in that: The pressure rod includes: Ball screw, split clamp and pressure plate; The pressure plate is a circular flat plate with a boss, and the size of the pressure plate is larger than the outer ring of the bearing to be lubricated; a ball socket is provided at the center of the boss, and two threaded holes are provided on both sides of the ball socket; The split clamp is in the shape of a ring, with a through hole in the middle for sleeved on the ball screw, and two through holes on the edge; The screw part of the ball screw is threadedly connected with the nut on the quick clamp arm, the ball head at the lower end of the ball screw is placed in the ball socket of the pressure plate, the split clamp is sleeved on the ball screw and connected to the pressure plate by bolts, and the split clamp is used to prevent the ball screw from falling out.

6. The device according to claim 5, characterized in that: The oil injection system includes: booster oiler, chassis, oil distribution switch, limit pin, and hose; The supercharger oiler is used to store lubricating oil, and the supercharger oiler is fixed on the chassis through a limit pin; The oil outlet of the booster oiler is connected to one end of a hose, and the other end of the hose is connected to the oil filling nozzle under the oil filling seat; An oil separation switch is provided on the hose.

7. The device according to claim 6, characterized in that: There are N oil filling seats, and the N oil filling seats have the same structure but different sizes.

8. The device according to claim 7, characterized in that: There are N pressure rods, which are matched with the N oil filling seats respectively.

9. The device according to claim 8, characterized in that: The oil distribution switch has one inlet and N outlets; the inlet is connected to the oil outlet of the booster oiler through a hose, and the N outlets are respectively connected to the oil filling nozzles of the N oil filling seats.

10. The device according to claim 9, characterized in that: Also includes: A wrench is arranged inside the cabinet door and is used for taking and placing the bearings to be lubricated.

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