High-precision anti-yawing needle bearing assembly for aircraft airfoil

Abstract

The utility model relates to a high-precision anti-yaw needle roller bearing assembly for aircraft airfoil, auxiliary drive mechanism is installed on bearing shell, and the drive end of auxiliary drive mechanism is connected with bearing inner shell, the moving end of auxiliary drive mechanism is installed with oil supply mechanism, and the oil discharge end of oil supply mechanism corresponds with the gap between bearing shell and bearing inner shell, according to the rotation frequency of bearing inner shell, the roller is added lubricating oil, the outer wall of bearing shell is equipped with the clamping groove of equidistance arrangement, the utility model discloses a high-precision anti-yaw needle roller bearing assembly for aircraft airfoil, through the work of bearing inner shell when swinging and driving auxiliary drive mechanism, according to the frequency of the swing of airfoil, the lubricating oil is added to the airfoil bearing, when the airfoil swings to a certain number, the auxiliary drive mechanism adds lubricating oil to the bearing, avoids the situation that the bearing is missing lubricating oil and appears the yaw after long time work.

Description

Technical Field

[0001] This invention relates to the field of needle roller bearing equipment technology, and in particular to a high-precision anti-runaway needle roller bearing assembly for aircraft wings. Background Technology

[0002] Aircraft wings generate lift by creating a pressure difference through the airflow velocity difference between the upper and lower surfaces. The aircraft's attitude is adjusted by changing the wing angle. The rotation of the wing is supported by bearings. Over time, bearings may experience a lack of lubricating oil between the rollers or insufficient oil viscosity, leading to oil film failure. This exacerbates friction and wear, causing the bearing to wobble. When the bearing wobbles, the wing's tilt angle becomes inaccurate, potentially resulting in unpredictable accidents. Summary of the Invention

[0003] To overcome the shortcomings in the prior art, this invention discloses a high-precision anti-runaway needle roller bearing assembly for aircraft wings. This invention uses the bearing inner shell to drive an auxiliary drive mechanism to work when it swings. Lubricating oil is added to the bearing for the wing according to the frequency of the wing swing. When the wing swings a certain number of times, the auxiliary drive mechanism adds lubricating oil to the bearing to avoid runaway due to lack of lubricating oil after the bearing has been working for a long time.

[0004] To achieve the aforementioned objective, the present invention employs the following technical solution: A high-precision anti-yawing needle roller bearing assembly for aircraft wings includes a bearing housing with equally spaced rollers installed inside. A bearing inner shell is slidably connected to the rollers. An auxiliary drive mechanism is installed on the bearing housing, with its drive end connected to the bearing inner shell. An oil supply mechanism is installed on the moving end of the auxiliary drive mechanism, with its discharge end corresponding to the gap between the bearing housing and the bearing inner shell. Lubricating oil is added to the rollers according to the rotation frequency of the bearing inner shell.

[0005] The outer wall of the bearing housing is provided with equidistantly arranged snap-fit ​​grooves.

[0006] The length of the bearing inner shell is greater than the length of the bearing outer shell.

[0007] The auxiliary drive mechanism includes a sleeve, limiting rods, pushing blocks, sliding rods, annular plate, ratchet gears, gear rings, and a moving plate. The sleeve is equipped with equidistantly arranged limiting rods, one end of which is located in a locking groove and engaged. The annular plate and gear ring are respectively located on the outer wall of the bearing inner housing and the inner wall of the sleeve and are fixedly connected. Equidistantly arranged drive rods are rotatably connected to the annular plate, one end of which is threaded to the moving plate. A ratchet gear is installed at the top of the drive rod, meshing with the gear ring. The sliding rods are equidistantly arranged and fixedly connected to the outer wall of the bearing inner housing, and are slidably connected to the moving plate. Equidistantly arranged pushing blocks are fixedly connected to the bottom end of the sleeve, and these pushing blocks are in contact with the bottom end of the drive rods.

[0008] The drive rod includes a rotating rod and a screw. The rotating rod is located on the annular plate and is rotatably connected. A ratchet gear is fixedly connected to the top of the rotating rod. The screw is threadedly connected to the moving plate and is slidably connected to the rotating rod.

[0009] The screw has a groove inside, and the groove wall has equidistant slots. The outer wall of the rotating rod is fixedly connected with equidistant locking rods, and the locking rods are located in the slots and are slidably connected.

[0010] The movable plate has equidistant sliding grooves on the side near the bearing inner housing, and the sliding grooves correspond to and are slidably connected to the sliding rod.

[0011] The movable plate has a spherical groove on the side of the protrusion near the bearing inner shell. Equally spaced sliding protrusions are fixedly connected to the outer wall of the bearing inner shell, and the sliding protrusions are located between two sliding rods. The sliding protrusions correspond to the spherical groove and are slidably connected.

[0012] The toothed ring consists of a ring body and ratchet teeth. The ring body is provided with a mounting groove, and a positioning rod is fixedly connected in the mounting groove at equal intervals. The positioning rod is rotatably connected with ratchet teeth, and an elastic plate is provided between the ratchet teeth and the ring body.

[0013] The oil supply mechanism includes a telescopic bladder and an oil supply pipe. The upper and lower sides of the telescopic bladder are fixedly connected to an annular plate and a movable plate, respectively. An oil supply pipe is fixedly connected inside the oil outlet of the telescopic bladder, and the oil outlet of the oil supply pipe passes through the annular plate and corresponds to the gap between the bearing housing and the bearing inner housing.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The present invention discloses a high-precision anti-runaway needle roller bearing assembly for aircraft wings. When the bearing inner shell swings, it drives an auxiliary drive mechanism to work. Lubricating oil is added to the bearing for the wing according to the swing frequency of the wing. After the wing swings a certain number of times, the auxiliary drive mechanism adds lubricating oil to the bearing to avoid runaway due to lack of lubricating oil after the bearing has been working for a long time. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 A magnified structural diagram at point A; Figure 4 This is a schematic diagram of the gear ring structure of the present invention; 1. Bearing housing; 2. Bearing inner housing; 3. Roller; 4. Auxiliary drive mechanism; 401. Sleeve; 402. Limiting rod; 403. Push block; 404. Rotating rod; 405. Sliding protrusion; 406. Screw; 407. Sliding rod; 408. Annular plate; 409. Ratchet; 410. Gear ring; 411. Moving plate; 5. Oil supply mechanism; 501. Telescopic bladder. Detailed Implementation

[0016] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0017] Combined with appendix Figures 1-4 The high-precision anti-wobbling needle roller bearing assembly for aircraft wing surfaces includes a bearing housing 1, with equidistantly arranged rollers 3 installed inside the bearing housing 1. A bearing inner housing 2 is slidably connected to the rollers 3. An auxiliary drive mechanism 4 is installed on the bearing housing 1, and the drive end of the auxiliary drive mechanism 4 is connected to the bearing inner housing 2. An oil supply mechanism 5 is installed on the moving end of the auxiliary drive mechanism 4, and the oil discharge end of the oil supply mechanism 5 corresponds to the gap between the bearing housing 1 and the bearing inner housing 2. Lubricating oil is added to the rollers 3 according to the rotation frequency of the bearing inner housing 2.

[0018] The outer wall of the bearing housing 1 is provided with equidistantly arranged snap-fit ​​grooves.

[0019] The length of the bearing inner shell 2 is greater than the length of the bearing outer shell 1.

[0020] The auxiliary drive mechanism 4 includes a sleeve 401, a limiting rod 402, a pushing block 403, a sliding rod 407, an annular plate 408, a ratchet gear 409, a gear ring 410, and a moving plate 411. The sleeve 401 is equipped with equidistantly arranged limiting rods 402, one end of which is located in a locking groove and engaged. The annular plate 408 and the gear ring 410 are respectively located on the outer wall of the bearing inner housing 2 and the inner wall of the sleeve 401 and are fixedly connected. The annular plate 408 is rotatably connected with equidistantly arranged… The drive rod has one end threadedly connected to the moving plate 411, and a ratchet 409 is installed at the top of the drive rod. The ratchet 409 meshes with the gear ring 410. The sliding rods 407 are equidistantly arranged on the outer wall of the bearing inner shell 2 and fixedly connected. The sliding rods 407 are slidably connected to the moving plate 411. The bottom end of the sleeve 401 is fixedly connected to the equidistantly arranged push blocks 403, and the push blocks 403 are in contact with the bottom end of the drive rod. The top end of the push blocks 403 is arc-shaped.

[0021] The drive rod includes a rotating rod 404 and a screw 406. The rotating rod 404 is located on the annular plate 408 and is rotatably connected. A ratchet gear 409 is fixedly connected to the top end of the rotating rod 404. The screw 406 is threadedly connected to the moving plate 411 and is slidably connected to the rotating rod 404. The bottom end of the screw 406 is arc-shaped.

[0022] The screw 406 has a groove, and the groove wall has equidistant slots. The outer wall of the rotating rod 404 is fixedly connected with equidistant locking rods, and the locking rods are located in the slots and are slidably connected.

[0023] The movable plate 411 has equidistant sliding grooves on the side near the bearing inner shell 2, and the sliding grooves correspond to and are slidably connected to the sliding rod 407.

[0024] The movable plate 411 has a spherical groove on the side of the protrusion near the bearing inner shell 2. The outer wall of the bearing inner shell 2 is fixedly connected with equidistant sliding protrusions 405, and the sliding protrusions 405 are located between two sliding rods 407. The sliding protrusions 405 correspond to the position of the spherical groove and are slidably connected. The sliding protrusions 405 limit the movable plate 411 to a certain extent.

[0025] The toothed ring 410 consists of a ring body and ratchet teeth. The ring body is provided with a mounting groove, and a positioning rod is fixedly connected in the mounting groove at equal intervals. The positioning rod is rotatably connected with ratchet teeth, and an elastic plate is provided between the ratchet teeth and the ring body. The ratchet teeth are reset by pushing them through the elastic plate.

[0026] The oil supply mechanism 5 includes a telescopic bladder 501 and an oil supply pipe. The upper and lower sides of the telescopic bladder 501 are fixedly connected to the annular plate 408 and the movable plate 411, respectively. An oil supply pipe is fixedly connected inside the oil outlet of the telescopic bladder 501, and the oil outlet of the oil supply pipe passes through the annular plate 408 and corresponds to the gap between the bearing housing 1 and the bearing inner housing 2.

[0027] The high-precision anti-slip needle roller bearing assembly for aircraft wings, as described above, involves the aircraft wing surface causing the bearing inner housing 2 to swing. Simultaneously, the bearing inner housing 2 swings, causing the annular plate 408 to swing as well. A rotating rod 404 on the annular plate 408 rotates under the action of a ratchet 409 and a gear ring 410. The rotating rod 404 drives a screw 406 to rotate via a locking rod, causing the screw 406 to extend and retract on a moving plate 411. When the screw 406 extends to a certain extent, it contacts a pushing block 403. The pushing block 403 then pushes the moving plate 411, on which the screw 406 is mounted, to move. This movement of the moving plate 411 compresses the telescopic bladder 501, squeezing out the lubricating oil within the bladder. The squeezed-out lubricating oil is then transported to the roller 3 via an oil supply pipe.

[0028] The parts of this invention not described in detail are prior art. Although the invention has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of the invention. However, those skilled in the art should understand that various changes in form and detail can be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the invention.

Claims

1. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces, comprising a bearing housing, and rollers arranged at equal intervals installed inside the bearing housing, wherein an inner bearing shell is slidably connected to the rollers, characterized in that: An auxiliary drive mechanism is installed on the bearing housing, and the drive end of the auxiliary drive mechanism is connected to the bearing inner housing. An oil supply mechanism is installed on the moving end of the auxiliary drive mechanism, and the oil discharge end of the oil supply mechanism corresponds to the gap between the bearing housing and the bearing inner housing. Lubricating oil is added to the rollers according to the rotation frequency of the bearing inner housing.

2. The high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 1, characterized in that: The outer wall of the bearing housing is provided with equidistantly arranged snap-fit ​​grooves.

3. The high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 1, characterized in that: The length of the bearing inner shell is greater than the length of the bearing outer shell.

4. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 1, characterized in that: The auxiliary drive mechanism includes a sleeve, limiting rods, pushing blocks, sliding rods, annular plate, ratchet gears, gear rings, and a moving plate. The sleeve is equipped with equidistantly arranged limiting rods, one end of which is located in a locking groove and engaged. The annular plate and gear ring are respectively located on the outer wall of the bearing inner housing and the inner wall of the sleeve and are fixedly connected. Equidistantly arranged drive rods are rotatably connected to the annular plate, one end of which is threaded to the moving plate. A ratchet gear is installed at the top of the drive rod, meshing with the gear ring. The sliding rods are equidistantly arranged and fixedly connected to the outer wall of the bearing inner housing, and are slidably connected to the moving plate. Equidistantly arranged pushing blocks are fixedly connected to the bottom end of the sleeve, and these pushing blocks are in contact with the bottom end of the drive rods.

5. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 4, characterized in that: The drive rod includes a rotating rod and a screw. The rotating rod is located on the annular plate and is rotatably connected. A ratchet gear is fixedly connected to the top of the rotating rod. The screw is threadedly connected to the moving plate and is slidably connected to the rotating rod.

6. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 5, characterized in that: The screw has a groove inside, and the groove wall has equidistant slots. The outer wall of the rotating rod is fixedly connected with equidistant locking rods, and the locking rods are located in the slots and are slidably connected.

7. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 4, characterized in that: The movable plate has equidistant sliding grooves on the side near the bearing inner housing, and the sliding grooves correspond to and are slidably connected to the sliding rod.

8. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 4, characterized in that: The movable plate has a spherical groove on the side of the protrusion near the bearing inner shell. Equally spaced sliding protrusions are fixedly connected to the outer wall of the bearing inner shell, and the sliding protrusions are located between two sliding rods. The sliding protrusions correspond to the spherical groove and are slidably connected.

9. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 4, characterized in that: The toothed ring consists of a ring body and ratchet teeth. The ring body is provided with a mounting groove, and a positioning rod is fixedly connected in the mounting groove at equal intervals. The positioning rod is rotatably connected with ratchet teeth, and an elastic plate is provided between the ratchet teeth and the ring body.

10. A high-precision anti-yawing needle roller bearing assembly for aircraft wing surfaces according to claim 1, characterized in that: The oil supply mechanism includes a telescopic bladder and an oil supply pipe. The upper and lower sides of the telescopic bladder are fixedly connected to an annular plate and a movable plate, respectively. An oil supply pipe is fixedly connected inside the oil outlet of the telescopic bladder, and the oil outlet of the oil supply pipe passes through the annular plate and corresponds to the gap between the bearing housing and the bearing inner housing.

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