Aircraft engine oil seal device

Abstract

The utility model relates to the technical field of engine oil seals, and discloses an aircraft engine oil seal device which comprises an oil seal assembly and a trolley, and the trolley comprises a pull rod, a frame used for installing the oil seal assembly and a brake assembly installed on the pull rod. The frame comprises a traction part provided with a traction wheel and a bearing part provided with a follower wheel. The brake assembly is driven by pressing the pull rod to apply pressure to the wheels so as to realize braking; the whole bearing vehicle body is of a frame structure, the self weight is reduced under the condition that the bearing capacity is met, meanwhile, wheels adopt large-diameter hubs, three-wheel structure configuration is adopted, and the problems that due to the fact that small-diameter hubs are arranged at the four corners in the prior art, friction resistance is large during movement, and steering is inconvenient are solved; and the gear flow meter is arranged, so that the liquid supply flow and the accumulated metering of oil in the whole oil sealing process can be accurately metered, and recording can be more intuitively carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of engine oil seals, in particular to an aircraft engine oil seal device. Background Art

[0002] The engine is the power unit of the aircraft, and its working condition directly affects the service life and safety of the aircraft. The aircraft engine oil seal is an important link after the engine R&D test or maintenance and repair test, which can ensure the good operation of the engine and prevent its internal components from rusting and causing damage.

[0003] As one of the important ground auxiliary equipment, the aircraft engine oil seal device has strict requirements on the oil seal materials due to the particularity of the engine itself. Generally, aviation lubricating oil HP-8A, HP-8B and 4050 lubricating oil are mainly used. Due to the particularity of the application site, the cost of this type of oil is very expensive. Practice shows that the existing oil seal devices have no oil metering link. Too much oil will cause a lot of waste during oil sealing, and too little oil will not achieve the oil sealing effect. At the same time, the existing mobile oil seal device has a heavy carrier body and is inconvenient to move; at the same time, there is no convenient braking device, which makes it inconvenient to brake the body when it is moving, and the body cannot be braked quickly. Utility Model Content

[0004] The utility model aims to provide an aircraft engine oil seal device, which solves the problem that the existing oil seal device cannot measure the used oil and the vehicle body braking is inconvenient.

[0005] The utility model is realized by the following technical scheme: an aircraft engine oil seal device, comprising an oil seal assembly and a trolley, the trolley comprising a pull rod, a frame for installing the oil seal assembly and a brake assembly installed on the pull rod; the frame comprises a traction part for installing a traction wheel and a bearing part for installing a follower wheel, the pull rod is hinged with the traction part and can rotate vertically up and down, the bearing part is hinged with the traction part and can rotate horizontally left and right; an annular groove is provided on the traction wheel, the brake assembly comprises a brake plate and a brake rubber strip installed on the brake plate; when the pull rod rotates from top to bottom until the brake rubber strip is in close contact with the annular groove on the traction wheel, the trolley brakes. The brake assembly is driven by a person pressing the pull rod to apply pressure to the wheel to achieve braking, and the braking process is convenient to operate and responds quickly. On the one hand, the contact area during braking can be increased to improve the braking effect; on the other hand, it can ensure that the braking surface will not wear during the driving process of the trolley, so that the braking surface always remains rough to ensure the braking effect.

[0006] In order to better realize the utility model, further, the cross section of the annular groove is an isosceles trapezoid, and the long base of the isosceles trapezoid is far away from the center of the traction wheel. Through the above arrangement, the braking force is gradually increased, and the braking force is increased by increasing the contact area. This arrangement can also make the peak value of the braking force larger.

[0007] In order to better implement the utility model, further, when the brake assembly is braking, the width of the end of the brake rubber strip that first contacts the traction wheel is smaller than the width of the end that contacts the traction wheel later. Through the above arrangement, the braking force can be adjusted more precisely, preventing the oil seal assembly from shaking due to sudden stop when the trolley is braked.

[0008] In order to better realize the utility model, further, the traction part includes a slewing frame, the bearing part includes a frame body and a connecting shaft cylinder, the connecting shaft cylinder is fixedly connected to the frame body, the slewing frame is rotatably connected to the connecting shaft cylinder, the pull rod includes a traction rod, the traction rod is fixedly connected to a slewing shaft, the slewing shaft is rotatably connected to the slewing frame, the traction rod is fixedly connected to a first traction ring and a second traction ring, and the first traction ring and the second traction ring are vertically arranged. Through the above arrangement, the overall weight is reduced, and at the same time, the wheels adopt large-diameter hubs and a three-wheel structure configuration, which solves the problem of large friction resistance and inconvenient steering during movement caused by the traditional four-corner configuration of small-diameter hubs.

[0009] In order to better realize the utility model, further, the connecting shaft cylinder is provided with a lock buckle, and the traction rod is provided with a clamping ring, and the clamping ring and the lock buckle are matched. Through the above arrangement, the pull rod is prevented from swinging or falling at will when the device is not in use.

[0010] In order to better implement the utility model, further, a positioning baffle is provided on the traction rod to assist the clamping ring to be embedded in the lock buckle and to limit the traction rod. Through the above arrangement, the pull rod is effectively prevented from swinging excessively and hitting the oil seal assembly.

[0011] In order to better realize the utility model, further, the oil seal assembly includes an oil tank and an oil pump. The oil tank is provided with an electric heater, a first ball valve, a liquid level gauge, a first temperature sensor, a liquid level sensor, and an air filter. The oil pump is connected to the motor through a bell-shaped cover. An oil extraction pipeline is provided on the oil extraction port of the oil pump. The oil extraction pipeline is connected to the oil tank. A third ball valve and a second filter are provided on the oil extraction pipeline. The oil discharge port of the oil pump is provided with an oil supply pipeline. Single The oil tank is provided with a return oil pipeline, which is connected to the oil supply pipeline between the third filter and the first pressure regulating valve, a pressure gauge is connected to the return oil pipeline through a pressure adapter, and a fourth ball valve and a second pressure regulating valve are provided on the return oil pipeline. The fourth ball valve is connected to the second pressure regulating valve in parallel, and the pressure gauge is located at the front end of the fourth ball valve and the second pressure regulating valve according to the flow direction of the oil. Through the above settings, the liquid supply flow rate and the cumulative measurement of the oil in the entire oil sealing process can be accurately measured, and the records can be made more intuitively.

[0012] In order to better realize the utility model, further, a control system is included, the control system includes an electrical control cabinet and a control panel arranged on the electrical control cabinet, and the electrical components in the oil seal assembly are electrically connected to the control panel through a connecting cable to form an electrical control loop.

[0013] In order to better realize the utility model, further, the flow meter is a gear flow meter, the oil tank is provided with a refueling pipeline, and the refueling pipeline is provided with a first filter and a second ball valve. Through the above arrangement, compared with the turbine flow meter, there is no requirement for the inlet and outlet straight pipe sections.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] (1) The utility model achieves braking by pressing the pull rod to drive the brake assembly to apply pressure to the wheel, thereby solving the problem of inconvenient vehicle body braking with the existing oil seal device;

[0016] (2) The utility model adopts a frame structure as the whole load-bearing vehicle body, thereby reducing the deadweight while meeting the load-bearing capacity. At the same time, the wheels adopt large-diameter hubs and a three-wheel structure configuration, thereby solving the problem of large friction resistance and inconvenient steering caused by the traditional four-corner configuration of small-diameter hubs;

[0017] (3) The utility model is provided with a gear flow meter, which can accurately measure the liquid supply flow rate and the cumulative measurement of the oil in the entire oil sealing process, and can record more intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the car from a front view.

[0019] Figure 2 This is a schematic diagram of the overall structure of the car from a top view.

[0020] Figure 3 It is a schematic diagram of the wheel and brake plate structure.

[0021] Figure 4 A schematic diagram of the wheel structure.

[0022] Figure 5 It is a schematic diagram of the structure of the brake plate and brake rubber strip.

[0023] Figure 6 This is a cross-sectional view of the brake rubber strip structure.

[0024] Figure 7 It is a schematic diagram of the oil seal assembly structure.

[0025] Among them: 1-first traction ring; 2-second traction ring; 3-traction rod; 4-lock; 5-positioning baffle; 6-brake plate; 7-rotating shaft; 8-traction wheel; 9-connecting shaft cylinder; 10-frame body; 11-rotating frame; 12-brake rubber strip; 13-annular groove; 14-following wheel; 15-traction part; 16-bearing part; 17-pull rod; 18-brake assembly; 101-oil tank; 102-electric heater; 103-first ball valve; 104-liquid level gauge; 105-first temperature sensor; 106-liquid level sensor; 107-air filter cleaner; 108-first filter; 109-second ball valve; 110-second filter; 111-motor; 112-bell jar; 113-oil pump; 114-check valve; 115-third filter; 116-first pressure regulating valve; 117-second temperature sensor; 118-flow meter; 119-pressure sensor; 120-fourth ball valve; 121-pressure gauge; 122-pressure adapter; 123-second pressure regulating valve; 124-on-off solenoid valve; 125-electrical control cabinet; 126-quick connector; 127-third ball valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 7 As shown, an aircraft engine oil seal device includes an oil seal assembly and a trolley, the trolley includes a pull rod 17, a frame for mounting the oil seal assembly and a brake assembly 18 mounted on the pull rod 17; the frame includes a traction portion 15 for mounting a traction wheel 8 and a bearing portion 16 for mounting a follower wheel 14, the pull rod 17 is hinged to the traction portion 15 and can rotate vertically up and down, the bearing portion 16 is hinged to the traction portion 15 and can rotate horizontally left and right; an annular groove 13 is provided on the traction wheel 8, the brake assembly 18 includes a brake plate 6 and a brake rubber strip 12 mounted on the brake plate 6; when the pull rod 17 rotates from top to bottom until the brake rubber strip 12 is in close contact with the annular groove 13 on the traction wheel 8, the trolley brakes.

[0029] The three surfaces of the groove are all braking surfaces. Embedding the braking surface can, on the one hand, increase the contact area during braking and improve the braking effect; on the other hand, it can ensure that the braking surface will not wear during the driving of the vehicle, so that the braking surface always remains rough to ensure the braking effect.

[0030] Embodiment 2:

[0031] like Figure 3-Figure 6 As shown, the cross section of the annular groove 13 is an isosceles trapezoid, and the long bottom side of the isosceles trapezoid is far away from the center of the traction wheel 8. When the brake rubber strip 12 is initially embedded in the annular groove 13, it only contacts the bottom side of the trapezoid, and does not contact the braking surfaces of the two waists of the trapezoid. At this time, a small braking force is provided. As the pull rod 17 is continuously pressed downward, the brake rubber strip 12 is compressed and deformed. At this time, the brake rubber strip 12 begins to contact the braking surfaces of the two waists of the trapezoid, and the brake rubber strip 12 is also greatly compressed. The contact area between the brake rubber strip 12 and the braking surfaces of the two waists of the trapezoid is also large, thereby realizing a gradual increase in the braking force. By increasing the contact area to increase the braking force, this setting can also make the peak value of the braking force larger.

[0032] like Figure 5 As shown, when the brake assembly 18 is braking, the width of the end of the brake rubber strip 12 that first contacts the traction wheel 8 is smaller than the width of the end that contacts the traction wheel 8 later. The radius of the brake rubber strip 12 is larger than the radius of the traction wheel 8. In the process of the pull rod 17 being gradually pressed down, the contact area between the brake rubber strip 12 and the traction wheel 8 is also gradually increased; and the end of the brake rubber strip 12 with a smaller width contacts the traction wheel 8 first, and as the pull rod 17 is pressed down, the contact width is also increasing. This arrangement can make the braking force adjustment more precise and prevent the oil seal assembly from shaking due to an emergency stop when the trolley is braked.

[0033] like Figure 1-Figure 2As shown, the traction part 15 includes a rotating frame 11, the bearing part 16 includes a frame body 10 and a connecting shaft cylinder 9, the connecting shaft cylinder 9 is fixedly connected to the frame body 10, the rotating frame 11 is rotatably connected to the connecting shaft cylinder 9, the pull rod 17 includes a traction rod 3, the traction rod 3 is fixedly connected to a rotating shaft 7, the rotating shaft 7 is rotatably connected to the rotating frame 11, the traction rod 3 is fixedly connected to a first traction ring 1 and a second traction ring 2, and the first traction ring 1 and the second traction ring 2 are vertically arranged. The movement of the trolley can be achieved by manually pulling the second traction ring 2, or by mechanically pulling the first traction ring 1; the frame body 10 adopts a frame structure as a whole, and the weight is reduced while meeting the bearing capacity. At the same time, the traction wheel 8 adopts a large diameter hub and adopts a three-wheel structure configuration, which solves the problem of large friction resistance and inconvenient steering during movement caused by the small diameter hubs configured at the four corners of the transmission. The pull rod can be longitudinally rotated and adjusted within the range of α1, and can also be horizontally rotated and adjusted within the range of β1+β2.

[0034] like Figure 1-Figure 2 As shown, the connecting shaft cylinder 9 is provided with a lock buckle 4, and the traction rod 3 is provided with a clamping ring, which cooperates with the lock buckle 4. By embedding the clamping ring into the lock buckle 4, the lock buckle 4 fixes the traction rod 3, preventing the pull rod 17 from swinging or tipping over at will when the device is not in use.

[0035] like Figure 1-Figure 2 As shown, the traction rod 3 is provided with a positioning baffle 5, which is used to assist the snap ring to be embedded in the lock buckle 4 and limit the traction rod 3. After the positioning baffle 5 is provided, it is effectively prevented that the pull rod 17 swings excessively and hits the oil seal assembly, and at the same time, after the pull rod 17 swings to a vertical position, the snap ring is just stuck in the lock buckle 4.

[0036] like Figure 7As shown, the oil seal assembly includes an oil tank 101 and an oil pump 113. The oil tank 101 is provided with an electric heater 102, a first ball valve 103, a liquid level gauge 104, a first temperature sensor 105, a liquid level sensor 106, and an air filter 107. The oil pump 113 is connected to the motor 111 through a bell jar 112. An oil extraction pipeline is provided on the oil extraction port of the oil pump 113. The oil extraction pipeline is communicated with the oil tank 101. A third ball valve 127 and a second filter 110 are provided on the oil extraction pipeline. The oil discharge port of the oil pump 113 is provided with an oil supply pipeline. A check valve 114, a third filter 110 are provided on the oil supply pipeline in sequence according to the flow direction of the oil. 15. A first pressure regulating valve 116, a flow meter 118, a second temperature sensor 117, a pressure sensor 119, an on-off solenoid valve 124, and a quick connector 126. The oil tank 101 is provided with an oil return pipeline, and the oil return pipeline is connected to the oil supply pipeline between the third filter 115 and the first pressure regulating valve 116. A pressure gauge 121 is connected to the oil return pipeline via a pressure adapter 122. A fourth ball valve 120 and a second pressure regulating valve 123 are provided on the oil return pipeline. The fourth ball valve 120 and the second pressure regulating valve 123 are connected in parallel. According to the flow direction of the oil, the pressure gauge 121 is located at the front end of the fourth ball valve 120 and the second pressure regulating valve 123. The electric heater 102 is used to heat the oil in the oil tank 101. When the oil tank 101 needs to be cleaned, the first ball valve 103 is manually opened to completely drain the oil in the oil tank 101. The air filter 107 is used to balance the pressure inside and outside the oil tank 101, and can also drain the water during dehydration and heating. During dehydration and heating, the fourth ball valve 120 is opened to keep the oil in a completely circulating state. By setting up the flow meter 118, when the device is working, the liquid supply flow rate and the cumulative measurement of the oil in the entire oil sealing process can be accurately measured, and the records can be made more intuitively.

[0037] like Figure 7 As shown, it includes a control system, which includes an electrical control cabinet 125 and a control panel arranged on the electrical control cabinet 125. The electrical components in the oil seal assembly are electrically connected to the control panel through a connecting cable to form an electrical control loop.

[0038] like Figure 7 As shown, the flow meter 118 is a gear flow meter, and a refueling pipeline is provided on the oil tank 101, and a first filter 108 and a second ball valve 109 are provided on the refueling pipeline. When adding oil, the second ball valve 109 can be opened, and the second ball valve 109 can be closed after the addition is completed. The gear flow meter has the advantages of small size, light weight, low vibration and noise during measurement, and compared with the turbine flow meter, there is no requirement for inlet and outlet straight pipe sections.

[0039] Working principle: Pull the pull rod 17 to pull the trolley to the predetermined working point, then start the electric heater 102 to heat the oil in the oil tank 101, and control the temperature at 100℃-110℃ of the frame body, open the fourth ball valve 120, and then the heated and dehydrated water is discharged into the atmosphere through the air filter 107 installed on the oil tank 101, so as to achieve the purpose of heating and dehydration, and then close the fourth ball valve 120; then connect the quick connector 126 to the engine oil seal, observe through the control panel to ensure that all components are in normal condition, start the motor 111 on the control panel to make the oil pump 113 start working, and at the same time, the on-off solenoid valve 124 is also opened to observe the system oil supply pressure, Whether the oil supply temperature meets the requirements of the process regulations, at this time, the 60℃~70℃ oil is supplied from the oil tank 101 through the second filter 110, the third ball valve 127, the oil pump 113, the one-way valve 114, the third filter 115, the first pressure regulating valve 116, the flow meter 118, the second temperature sensor 117, the pressure sensor 119, the on-off solenoid valve 124, and the quick connector 126 to the engine oil seal to complete the oil seal. During this oil supply process, when the liquid passes through the measuring cavity of the gear flowmeter, it will drive the gear to rotate. The volume of liquid contained in the space formed by each tooth valley and the measuring cavity wall is equal. The volume of liquid flowing through can be measured by detecting the number of gears passing through by a specific sensor.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An aircraft engine oil seal device, comprising an oil seal assembly and a trolley, characterized in that: The trolley comprises a pull rod (17), a frame for mounting an oil seal assembly, and a brake assembly (18) mounted on the pull rod (17); the frame comprises a traction portion (15) for mounting a traction wheel (8) and a bearing portion (16) for mounting a follower wheel (14); the pull rod (17) is hingedly connected to the traction portion (15) and can rotate vertically upward and downward; the bearing portion (16) is hingedly connected to the traction portion (15) and can rotate horizontally leftward and rightward; an annular groove (13) is provided on the traction wheel (8); the brake assembly (18) comprises a brake plate (6) and a brake rubber strip (12) mounted on the brake plate (6); when the pull rod (17) rotates from top to bottom until the brake rubber strip (12) is in close contact with the annular groove (13) on the traction wheel (8), the trolley brakes.

2. An aircraft engine oil seal device according to claim 1, characterized in that: The cross section of the annular groove (13) is an isosceles trapezoid, and the long base of the isosceles trapezoid is far away from the center of the traction wheel (8).

3. An aircraft engine oil seal device according to claim 2, characterized in that: When the brake assembly (18) is braking, the width of the end of the brake rubber strip (12) that first contacts the traction wheel (8) is smaller than the width of the end that contacts the traction wheel (8) later.

4. The aircraft engine oil seal device according to claim 3, characterized in that: The traction part (15) comprises a slewing frame (11), the bearing part (16) comprises a frame body (10) and a connecting shaft cylinder (9), the connecting shaft cylinder (9) is fixedly connected to the frame body (10), the slewing frame (11) is rotatably connected to the connecting shaft cylinder (9), the pull rod (17) comprises a traction rod (3), the traction rod (3) is fixedly connected to a slewing shaft (7), the slewing shaft (7) is rotatably connected to the slewing frame (11), the traction rod (3) is fixedly connected to a first traction ring (1) and a second traction ring (2), and the first traction ring (1) and the second traction ring (2) are vertically arranged.

5. An aircraft engine oil seal device according to claim 4, characterized in that: The connecting shaft cylinder (9) is provided with a lock buckle (4), and the traction rod (3) is provided with a clamping ring, the clamping ring and the lock buckle (4) forming a match.

6. An aircraft engine oil seal device according to claim 5, characterized in that: The traction rod (3) is provided with a positioning baffle (5) for assisting the clamping ring to be embedded in the lock buckle (4) and limiting the position of the traction rod (3) at the same time.

7. An aircraft engine oil seal device according to claim 6, characterized in that: The oil seal assembly comprises an oil tank (101) and an oil pump (113). The oil tank (101) is provided with an electric heater (102), a first ball valve (103), a liquid level gauge (104), a first temperature sensor (105), a liquid level sensor (106), and an air filter (107). The oil pump (113) is connected to the motor (111) via a bell housing (112). An oil extraction pipeline is provided at the oil extraction port of the oil pump (113). The oil extraction pipeline is in communication with the oil tank (101). A third ball valve (127) and a second filter (110) are provided on the oil extraction pipeline. An oil discharge port of the oil pump (113) is provided with an oil supply pipeline. A check valve (114), a third filter (115) and a second filter (110) are provided on the oil supply pipeline in sequence according to the flow direction of the oil. ), a first pressure regulating valve (116), a flow meter (118), a second temperature sensor (117), a pressure sensor (119), an on-off solenoid valve (124), and a quick connector (126); the oil tank (101) is provided with an oil return pipeline, the oil return pipeline is connected to the third filter (115) and the oil supply pipeline between the first pressure regulating valve (116); the oil return pipeline is connected to a pressure gauge (121) via a pressure adapter (122); the oil return pipeline is provided with a fourth ball valve (120) and a second pressure regulating valve (123); the fourth ball valve (120) and the second pressure regulating valve (123) are connected in parallel; according to the flow direction of the oil, the pressure gauge (121) is located at the front end of the fourth ball valve (120) and the second pressure regulating valve (123).

8. An aircraft engine oil seal device according to any one of claims 1 to 7, characterized in that: It comprises a control system, the control system comprising an electrical control cabinet (125) and a control panel arranged on the electrical control cabinet (125), the electrical elements in the oil seal assembly and the control panel being electrically connected via a connecting cable to form an electrical control loop.

9. The aircraft engine oil seal device according to claim 7, characterized in that: The flow meter (118) is a gear flow meter. The oil tank (101) is provided with a refueling pipeline, and the refueling pipeline is provided with a first filter (108) and a second ball valve (109).

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