A vertical stabilizer cone bolt dismounting device and dismounting force measuring method

Abstract

The application discloses a vertical stabilizer conical bolt dismounting device and a dismounting force measuring method, which comprises a main plate, a back plate, a pressure sensor assembly, a connecting plate, a ball head bolt, a guide bolt, a wrench, and an industrial computer. The main plate and the back plate are fixedly connected, and an airplane tail wing product provided with the vertical stabilizer conical bolt is fixed between the main plate and the back plate. The ball head bolt is arranged on the main plate. The connecting plate is connected to the main plate through the guide bolt on the side close to the back plate. The pressure sensor assembly is fixed on the connecting plate on the side close to the back plate. The back plate is provided with a stepped through hole. The industrial computer is connected to the pressure sensor assembly. The wrench clamps the nut end of the ball head bolt and applies a torque to the nut end. The ball head bolt rotates to drive the connecting plate to move close to the airplane tail wing product, pushes the pressure sensor assembly to tightly press the vertical stabilizer conical bolt, and then pushes the vertical stabilizer conical bolt out of the mounting hole and makes the vertical stabilizer conical bolt fall into the stepped through hole on the back plate. Meanwhile, the thrust value of the process is recorded and transmitted to the industrial computer for reading and analysis.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aircraft manufacturing, in particular to a vertical stabilizer conical bolt dismounting device and a dismounting force measuring method. BACKGROUND

[0002] At the vertical stabilizer, the conical bolt and the conical bushing are used to connect the vertical tail and the fuselage. If the friction force generated by the bolt assembly after installation cannot completely contain the lateral force of the bolt assembly, the conical bolt assembly and the conical bushing will slide and rotate. Therefore, it is necessary to carry out a vertical tail butt joint bolt assembly push-out force test, analyze the relationship between the friction force generated by the bolt assembly after installation and the lateral force of the bolt assembly when the load is contained, and push out the rotating conical bolt to observe and analyze the wear of the conical bolt and the bushing, so as to solve the problem of the rotation of the conical bolt and the conical bushing of the vertical stabilizer.

[0003] In the traditional dismounting process, the dismounting pin is usually completed by relying on instantaneous impulse, which is easy to cause damage and loosening of the pin and its adjacent parts, and has dangerous factors, which can easily damage the aircraft product or the pin falls into the aircraft interior, causing safety hazards. The purpose of the present application is to provide a vertical stabilizer conical bolt dismounting device and a dismounting force measuring method. The device is simple to install and easy to operate, and can be operated by using a single wrench; it is safe and reliable, avoids damage to the aircraft product during dismounting and the safety hazard of the conical pin falling into the aircraft interior; it is accurate in positioning and can only dismount the bolt without damaging the adjacent parts; it has compatibility and can adapt to different sizes of the aircraft tail wing fork ears by adjusting the position of the nut; and it can display the force change during dismounting in real time, which is used to study the relationship between the friction force generated by the conical bolt and the bushing at the vertical stabilizer of the aircraft and the lateral force. SUMMARY

[0004] To achieve the above purpose, the present application adopts the following technical solutions:

[0005] A vertical stabilizer conical bolt dismounting device, comprising a main plate, a back plate, a pressure sensor assembly, a connecting plate, a ball head bolt, a guide bolt, a wrench, and an industrial computer, the main plate and the back plate are connected by a bolt and a nut, an aircraft tail product with a vertical stabilizer conical bolt is placed between the main plate and the back plate, and is clamped between the main plate and the back plate by a tightened nut, a ball head bolt mounting threaded hole is arranged on the main plate, the hole axis is coaxial with the vertical stabilizer conical bolt, connecting plate mounting holes are arranged around the ball head bolt mounting threaded hole, the connecting plate is connected to the main plate by a guide bolt on the side close to the back plate, the pressure sensor assembly is fixed on the connecting plate on the side close to the back plate, a stepped through hole is arranged on the back plate, the industrial computer is connected with the pressure sensor assembly, the ball head end of the ball head bolt passes through the threaded hole on the main plate, the wrench clamps the nut end of the ball head bolt and applies torque to it, the ball head bolt rotates to drive the connecting plate to move towards the aircraft tail product, pushes the pressure sensor assembly to tightly press the vertical stabilizer conical bolt until it is pushed out of the mounting hole and falls into the stepped through hole on the back plate, and the thrust value of this process is recorded and transmitted to the industrial computer for reading and analysis.

[0006] The main plate is an L-shaped symmetric structure with a reinforcing rib, a ball head bolt mounting threaded hole is arranged in the middle of the reinforcing rib, the threaded hole is a fine thread hole, four connecting plate mounting holes are arranged around the threaded hole, a handle is arranged on the outer side of the main plate, and two rows of bolt through holes are arranged at the lower end of the main plate.

[0007] The back plate is an inverted T-shaped structure, a stepped through hole is arranged at the center of the top end, the diameter of the large hole is consistent with the outer diameter of the pressure sleeve of the vertical stabilizer conical bolt, the middle hole is for the vertical stabilizer conical bolt to pass through, the plane formed by the outer diameter of the large hole and the outer diameter of the middle hole blocks the conical bushing, ensuring that only the conical bolt is pushed out during the pushing-out process, and the small hole is smaller than the diameter of the vertical stabilizer conical bolt, so that the conical bolt falls into the stepped through hole of the back plate after being pushed out of the mounting hole.

[0008] One side of the connecting plate is provided with a ball socket corresponding to the ball head bolt, the other side is provided with a positioning boss of the pressure sensor assembly, and guide bolt mounting holes are arranged at the four corners of the connecting plate.

[0009] The pressure sensor assembly comprises a square plate, a circular plate, a pressure sensor, a cable, and a signal amplifier, the square plate, the pressure sensor, and the circular plate are connected in sequence by screws, the circular plate is installed on the side of the vertical stabilizer conical bolt for applying pressure to the conical bolt, the square plate is connected with the connecting plate, and the pressure sensor is connected with the signal amplifier through the cable and the industrial computer.

[0010] The method for measuring the dismounting force using the device further comprises the following contents:

[0011] 1. After installing the pressure sensor assembly on the connecting plate, install the connecting plate on the main plate through the guide bolt;

[0012] 2). Install the ball head bolt on the main plate, and the ball head end of the ball head bolt is tangent to the ball socket of the connecting plate;

[0013] 3). Place the installed main plate and back plate in front of and behind the vertical stabilizer cone bolt respectively, adjust the position, ensure that the ball head bolt on the main plate, the pressure sensor assembly and the cone bolt are coaxial, and ensure that the vertical stabilizer cone bushing is in the large hole of the back plate;

[0014] 4) Tighten the double-headed stud and nut to clamp the main plate and back plate with the aircraft tail product, the first row of nuts of the main plate and back plate are subjected to tension during the push pin process and must be installed away from the aircraft tail product, the second row of nuts are subjected to pressure during the push pin process and must be installed close to the aircraft tail product, the pressure sensor assembly on the main plate is in contact with and pressed against the cone bolt, and the back plate is in contact with and pressed against the cone bushing, the entire push pin device maintains a certain safety distance from the rest of the aircraft;

[0015] 5). Connect the cable, slowly apply torque to the ball head bolt using a wrench, the ball head bolt rotates in, the connecting plate advances axially along the guide bolt, and then the pressure sensor assembly advances, until it stops against the vertical stabilizer cone bolt;

[0016] 6). Increase the torque of the ball head bolt by the wrench, then increase the pushing force applied to the vertical stabilizer cone bolt, until the vertical stabilizer cone bolt is pushed out of the installation hole and falls into the small hole of the back plate, the pressure sensor passes through the signal amplifier and then through the industrial computer to display the change value of the pushing force in real time and form a curve, which is used to read the value of the disassembly force and analyze it.

[0017] Beneficial effects: The present application is mainly designed to solve the problem of measuring the disassembly force of the cone bolt at the vertical stabilizer of the aircraft. The device is easy to install and operate, and can be operated with a single wrench; it is safe and reliable, avoiding damage to the aircraft product during disassembly and the safety hazard of the cone falling into the aircraft; it has accurate positioning and can only disassemble the bolt without damaging the adjacent parts; it has compatibility and can adapt to different sizes of the aircraft tail fork ear by adjusting the position of the nut; and it can display the change of the disassembly force in real time, which is used to study the relationship between the friction and lateral force generated by the tightening of the cone bolt and its bushing at the vertical stabilizer of the aircraft.

[0018] The present application will be described in further detail below in conjunction with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure diagram of a vertical stabilizer cone bolt disassembly device;

[0020] Figure 2 A top view of a vertical stabilizer cone bolt disassembly device;

[0021] Figure 3 A vertical stabilizer cone bolt dismounting device internal structure diagram

[0022] Figure 4 Pressure sensor and square plate and round plate connection diagram

[0023] Figure number explanation: 1, main plate; 2, back plate; 3, pressure sensor assembly; 3-1, square plate; 3-2, round plate; 3-3, pressure sensor; 4, connecting plate; 5, ball head bolt; 6, wrench; 7, signal amplifier; 8, industrial computer; 9, cone bolt; 10, stud; 11, guide bolt; 12, cable; 13, handle; 14, nut. DETAILED DESCRIPTION

[0024] Reference Figures 1-4 A vertical stabilizer cone bolt dismounting device, by main plate 1, back plate 2, pressure sensor assembly 3, connecting plate 4, ball head bolt 5, guide bolt 11, wrench 6, industrial computer 8, main plate 1 and back plate 2 are connected by stud 10 nut 14, the aircraft tail product installed with vertical stabilizer cone bolt 9 is placed between main plate 1 and back plate 2, and is clamped between main plate 1 and back plate 2 by tightening nut 14, main plate 1 is provided with ball head bolt 5 installation thread hole, the hole axis is coaxial with vertical stabilizer cone bolt 9, the periphery of ball head bolt 5 installation thread hole is provided with connecting plate 4 installation hole, connecting plate 4 is connected with main plate 1 through guide bolt 11 on the side close to back plate 2, pressure sensor assembly 3 is fixed on the side close to back plate 2 of connecting plate 4, back plate 2 is provided with stepped through hole, industrial computer 8 is connected with pressure sensor assembly 3, ball head end of ball head bolt 5 passes through thread hole on main plate 1, wrench 6 clamps nut end of ball head bolt 5 and applies torque to it, ball head bolt 5 rotates and drives connecting plate 4 to approach aircraft tail product, pushes pressure sensor assembly 3 and tightens vertical stabilizer cone bolt 9 until it is pushed out of the installation hole and falls into the stepped through hole on back plate 2, at the same time, the thrust value of this process is recorded and transmitted to the industrial computer for reading and analysis.

[0025] Main plate 1 is L-shaped symmetric structure with reinforcing ribs, ball head bolt 5 installation thread hole is arranged in the middle of the reinforcing rib, the thread hole is a fine thread hole, four connecting plate 4 installation holes are arranged around the thread hole, main plate 1 is provided with handle 13 on the outside, and two rows of bolt through holes are arranged at the lower end of main plate 1.

[0026] The back plate 2 is a reverse T-shaped structure, and a stepped through hole is arranged at the center of the top end. The aperture of the large hole is consistent with the outer diameter of the pressing sleeve of the vertical stabilizer conical bolt 9, the middle hole is passed through by the vertical stabilizer conical bolt 9, the outer diameter of the large hole and the outer diameter of the middle hole form a plane to block the conical sleeve, so that only the conical bolt 9 is pushed out during the pushing-out process, and the small hole is smaller than the diameter of the vertical stabilizer conical bolt 9, so that the conical bolt 9 is ensured to fall into the stepped through hole of the back plate 2 after being pushed out of the installation hole.

[0027] One side of the connecting plate 4 is provided with a ball socket corresponding to the ball head bolt 5, and the other side is provided with a positioning boss of the pressure sensor assembly 3. The connecting plate 4 is provided with guide bolt 11 installation holes at four corners.

[0028] The pressure sensor assembly 3 comprises a square plate 3-1, a round plate 3-2, a pressure sensor 3-3 and a plurality of cables 12. The square plate 3-1, the pressure sensor 3-3 and the round plate 3-2 are sequentially connected by screws. The round plate 3-2 is installed on the side of the conical bolt 9 for applying pressure to the conical bolt 9. The square plate 3-1 is used for connecting with the connecting plate 4. The cables 12 are used for connecting the pressure sensor 3-3 with the signal amplifier 7 and the signal amplifier 7 with the industrial computer 8.

[0029] The pressure sensor assembly 3 comprises a square plate 3-1, a round plate 3-2, a pressure sensor 3-3, a cable 12 and a signal amplifier 7. The square plate 3-1, the pressure sensor 3-3 and the round plate 3-2 are sequentially connected by screws. The round plate 3-2 is installed on the side of the vertical stabilizer conical bolt 9 for applying pressure to the conical bolt 9. The square plate 3-1 is connected with the connecting plate 4. The pressure sensor 3-3 is connected with the signal amplifier 12 through the cable 12 and the industrial computer 8.

[0030] The method for measuring the dismounting force by using the device further comprises the following contents:

[0031] 1. After the pressure sensor assembly 3 is installed on the connecting plate 4, the connecting plate 4 is installed on the main plate 1 through the guide bolt 11;

[0032] 2. The ball head bolt 5 is installed on the main plate 1, and the ball head end of the ball head bolt 5 is tangent to the ball socket of the connecting plate 4;

[0033] 3. The installed main plate 1 and the back plate 2 are respectively located in front of and behind the vertical stabilizer conical bolt 9, the positions are adjusted, the ball head bolt 5 on the main plate 1, the pressure sensor assembly 3 and the conical bolt 9 are ensured to be coaxial, and the vertical stabilizer conical sleeve is ensured to be in the large hole of the back plate 2;

[0034] 4) through the screw double head 10, nut 14, main plate 1 and back plate 2 and the aircraft tail product clamp, main plate 1 and back plate 2 first row of nut 14 in the process of push pin tension, must be installed away from the aircraft tail product side, the second row of nut 14 in the process of push pin pressure, must be installed close to the aircraft tail product side, the pressure sensor assembly 3 on the main plate 1 and the tapered bolt 9 contact and compression, back plate 2 and tapered bushing contact and compression, the whole push pin device and the rest of the aircraft parts are kept a certain safety distance;

[0035] 5). connect the cable 12, use wrench 6 on the ball head bolt 5 slowly apply torque, ball head bolt 5 spin in, push the connecting plate 4 along the guide bolt 11 axial forward, and then push the pressure sensor assembly 3 forward, until against the vertical stabilizer tapered bolt 9;

[0036] 6). through the wrench 6 on the ball head bolt 5 increase torque, in turn, the vertical stabilizer tapered bolt 9 applied to the push force increases, until the vertical stabilizer tapered bolt 9 push out the installation hole and fall in the back plate 2 small hole, pressure sensor 3-3 through the signal amplifier 7 through industrial computer 8 real-time display of the change value of the push force and form curve, used to read the value of the force and analysis.

Claims

1. A device for disassembling a tapered bolt with a vertical stabilizer surface, characterized in that... The system includes a motherboard, backplate, pressure sensor assembly, connecting plate, ball head bolt, guide bolt, wrench, and industrial computer. The motherboard and backplate are connected by studs and nuts. The aircraft tail product, equipped with a vertical stabilizer tapered bolt, is placed between the motherboard and backplate and clamped between them by tightening the nut. The motherboard has threaded holes for the ball head bolt, with the hole axis coaxial with the vertical stabilizer tapered bolt. Connecting plate mounting holes are located around the threaded holes for the ball head bolt. The connecting plate is connected to the motherboard near the backplate by guide bolts. The pressure sensor assembly is fixed to the connecting plate near the backplate. The backplate has stepped through holes. The industrial computer is connected to the pressure sensor assembly. The ball head of the ball head bolt passes through the threaded hole on the motherboard. The wrench holds the nut end of the ball head bolt and applies torque. The ball head bolt screws in, causing the connecting plate to move closer to the aircraft tail product, pushing the pressure sensor assembly against the vertical stabilizer tapered bolt until it is pushed out of the mounting hole and falls into the stepped through hole on the backplate. The thrust value during this process is recorded and transmitted to the industrial computer for reading and analysis.

2. The vertical stabilizer tapered bolt disassembly device according to claim 1, characterized in that... The motherboard has an L-shaped symmetrical structure with reinforcing ribs. The reinforcing ribs have a ball head bolt mounting threaded hole in the middle. The threaded hole is a fine thread. There are four connecting plate mounting holes around it. The outside of the motherboard has a handle. There are two rows of bolt through holes at the bottom of the motherboard.

3. The vertical stabilizer conical bolt disassembly device according to claim 1, characterized in that... The back plate has an inverted T-shaped structure with two rows of bolt holes at the bottom and a stepped through hole at the center of the top. The diameter of the large hole is the same as the outer diameter of the sleeve of the vertical stabilizer tapered bolt, the middle hole is for the vertical stabilizer tapered bolt to pass through, and the small hole is smaller than the diameter of the vertical stabilizer tapered bolt.

4. The vertical stabilizer conical bolt disassembly device according to claim 1, characterized in that... One side of the connecting plate has a ball socket corresponding to the ball head bolt, and the other side has a positioning boss for the pressure sensor assembly. The four corners of the connecting plate have guide bolt mounting holes.

5. The vertical stabilizer tapered bolt disassembly device according to claim 1, characterized in that... The pressure sensor assembly includes a square plate, a round plate, a pressure sensor, cables, and a signal amplifier. The square plate, pressure sensor, and round plate are connected in sequence by screws. The round plate is installed on the side of the tapered bolt on the vertical stabilizing surface to apply pressure to the tapered bolt. The square plate is connected to the connecting plate. The pressure sensor and signal amplifier are connected to the industrial control computer via cables.

6. A method for measuring disassembly force using a vertical stabilizer conical bolt disassembly device as described in any one of claims 1-5, characterized in that... Specifically, it includes the following: 6-1. After installing the pressure sensor assembly on the connecting plate, install the connecting plate onto the main board using guide bolts; 6-2. Install the ball head bolt onto the main board, with the ball head of the ball head bolt tangent to the ball socket of the connecting plate; 6-3 Position the installed motherboard and backplate in front of and behind the vertical stabilizer tapered bolt, respectively, and adjust their positions to ensure that the ball head bolt and pressure sensor assembly on the motherboard are coaxial with the tapered bolt, and that the vertical stabilizer tapered bushing is inside the large hole of the backplate. 6-4 The main board and back plate are clamped to the aircraft tail product by tightening the double-ended studs and nuts. The first row of nuts on the main board and back plate are under tension during the push-pin process and must be installed on the side away from the aircraft tail product. The second row of nuts are under pressure during the push-pin process and must be installed on the side closer to the aircraft tail product. The pressure sensor assembly on the main board contacts and is pressed against the tapered bolt, and the back plate contacts and is pressed against the tapered bushing. The entire push-pin device maintains a certain safe distance from the rest of the aircraft. 6-5. Connect the cable, and slowly apply torque to the ball head bolt with a wrench. The ball head bolt will be screwed in, pushing the connecting plate forward along the axis of the guide bolt, and then pushing the pressure sensor assembly forward until it hits the tapered bolt on the vertical stabilizer surface. 6-6. By continuously increasing the torque of the ball head bolt with a wrench, the thrust applied to the vertical stabilizer tapered bolt is continuously increased until the vertical stabilizer tapered bolt is pushed out of the mounting hole and falls into the small hole in the back plate. The pressure sensor, through the signal amplifier, displays the thrust change value in real time and forms a curve through the industrial control computer, which is used to read the value of the disassembly force and perform analysis.

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