Airplane skin pit repairing device

Abstract

The utility model discloses an aircraft skin pit repairing device, which belongs to the technical field of pit repairing devices and is characterized by comprising an outer cylinder, a pull rod and a tension adjusting mechanism, one end of the pull rod penetrates through a small-diameter hole to be connected with a top ring, and the other end of the pull rod is connected with an electromagnetic chuck; a tension adjusting mechanism is installed in the large-diameter hole of the outer cylinder and comprises a screw, a threaded sleeve and a rotating handle, the threaded sleeve is installed in the containing cavity of the outer cylinder, a threaded through hole is formed in the threaded sleeve, one end of the screw penetrates through the threaded through hole of the threaded sleeve and is in threaded fit with the threaded through hole of the threaded sleeve, one end of the screw abuts against the top ring, and the other end of the screw abuts against the rotating handle. A square blind hole is formed in the other end; one end of the rotating handle is connected with the square guide rod, and the square guide rod is inserted into the square blind hole of the screw rod and is in sliding fit with the square blind hole. Compared with the prior art, the device has the characteristic that the drawing force is convenient to regulate and control.

Description

Technical Field

[0001] The utility model relates to the technical field of dent repair devices, in particular to an aircraft skin dent repair device. Background Art

[0002] During the takeoff and landing of an aircraft, due to various factors such as bird strikes and hail strikes, the surface of the aircraft, such as the skin, the leading edge of the wing, the engine cover, etc., may be damaged and form pits. These pits not only increase the resistance of the aircraft and affect its flight performance, but also reduce the fatigue resistance of related components, thereby increasing the risk of accidents. In order to solve this problem, the work of repairing pits is particularly important.

[0003] In order to repair these pits, pullers have become an important tool. There are two main types of common pullers: external force pullers and grip pullers. External force pullers are mainly used to repair larger pits. Their working principle is to generate outward pulling force by swinging the slide hammer to pull out the pit. However, this type of puller may pinch the hand during operation, and because the force is difficult to control, sometimes the inner arc pit is mistakenly repaired into an outer arc pit.

[0004] In contrast, the grip puller is mainly used to repair small dents. However, the use of this puller requires a high degree of flatness on the sheet metal surface. If the surface is not flat enough, the force generated by the puller will be uneven, thus affecting the repair effect. Summary of the invention

[0005] The utility model aims to provide an aircraft skin dent repair device to address the deficiencies of the above prior art, so as to facilitate the adjustment of the pulling force.

[0006] The utility model provides an aircraft skin dent repair device, which is characterized by comprising an outer cylinder, a pull rod and a tension adjustment mechanism, the outer cylinder is provided with a stepped through hole distributed along the axis, the stepped through hole is divided into a large diameter hole and a small diameter hole, one end of the pull rod passes through the small diameter hole to be connected with a top ring, and the other end is connected with an electromagnetic suction cup, the top ring is placed in the large diameter hole and slidingly cooperates with the large diameter hole, a first spring is sleeved on the outer side of the pull rod, one end of the first spring is connected with the top ring, and the other end is connected to the shoulder of the large diameter hole and the small diameter hole; a tension adjustment mechanism is installed in the large diameter hole of the outer cylinder, the tension adjustment mechanism comprises a screw, a threaded sleeve and a rotating handle, a placement cavity is provided at the large diameter hole of the outer cylinder, a threaded sleeve is installed inside the placement cavity, a threaded through hole is provided on the threaded sleeve, one end of the screw passes through the threaded through hole of the threaded sleeve and is threaded with it According to the embodiment of the present invention, one end of the screw rod is pressed against the top ring, and the other end is provided with a square blind hole; one end of the rotating handle is fixedly connected to the square guide rod, and the square guide rod is inserted into the square blind hole of the screw rod and slides with the square blind hole; the threaded sleeve comprises two half threaded cylinders, which are elastically connected and combined into a complete threaded sleeve, and the two half threaded cylinders are movably installed in the placement cavity; the wall of the outer cylinder is provided with a plurality of symmetrically distributed long strip through holes, and a shift block is installed in the long strip through hole, and the shift block slides with the two side walls of the long strip through hole; the lower end of the shift block is provided with an inclined surface, and guide plates are respectively installed on the outer walls of the two half threaded cylinders, and the guide plate is provided with an inclined surface corresponding to the inclined surface of the shift block, and the shift block is pressed on the upper end of the guide plate, and the inclined surface of the shift block and the inclined surface of the guide plate fit together, and one end of the shift block is connected to the outer cylinder through a third spring.

[0007] Furthermore, one end of the outer cylinder is coaxially connected to the guide sleeve, the guide sleeve is provided with a guide through hole, the guide through hole is connected to the stepped through hole, and the pull rod passes through the guide through hole of the guide sleeve.

[0008] Furthermore, one end of the pull rod is connected to the mounting plate, a threaded through hole is provided on the mounting plate, and the bolts pass through the threaded through holes on the mounting plate in sequence and are connected to the threaded holes of the electromagnetic chuck, so that the electromagnetic chuck is installed on the mounting plate.

[0009] Furthermore, the square guide rod is connected to the bottom of the square blind hole via a fourth spring.

[0010] Furthermore, the pull rod, screw rod, square guide rod and rotating handle are respectively provided with wire through holes, and the power line of the electromagnetic suction cup passes through the above-mentioned wire through holes in turn to be connected to the power supply.

[0011] Furthermore, guide blind holes are respectively provided on the two outer wall cross sections of one half of the threaded cylinder, and the second spring is installed in the guide blind holes. Guide shafts corresponding to the guide blind holes are respectively provided on the outer wall cross sections of the other half of the threaded cylinder, and the guide shafts are inserted into the guide blind holes and compress the second spring.

[0012] Furthermore, slide grooves are provided on both side walls of the long strip through hole of the outer cylinder, and sliding blocks corresponding to the slide grooves are provided on both side walls of the shifting block, and the sliding blocks are placed in the slide grooves and slidably cooperate with the slide grooves.

[0013] Furthermore, grooves are respectively arranged on the side walls around the long strip through hole of the outer cylinder, and sealing plates are respectively arranged around the shifting block, and the sealing plates are placed in the grooves to seal the long strip through hole.

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

[0015] The utility model can drive the screw to rotate by turning the rotating handle, and the screw presses the pull rod outwards through the top ring to compress the first spring. By turning the rotating handle, the movement displacement of the screw can be controlled, and then the compression amount of the first spring can be controlled, so as to ultimately control the strength of the pull rod's rebound tension, thereby avoiding affecting the repair effect due to excessive or insufficient rebound tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is the front view of the utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0019] Figure 4 yes Figure 3 A partial enlarged view of part A. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1 and 2 As shown, the utility model includes an outer cylinder 5, a pull rod 3 and a tension adjustment mechanism 6.

[0022] The outer cylinder 5 is provided with a stepped through hole distributed along the axis, and the stepped through hole is divided into a large diameter hole and a small diameter hole. One end of the pull rod 3 passes through the small diameter hole and is fixedly connected to the top ring 604, and the other end is fixedly connected to the electromagnetic suction cup 2. The top ring 604 is placed in the large diameter hole and slides with the large diameter hole. A first spring is sleeved on the outer side of the pull rod 3, one end of the first spring is connected to the top ring 604, and the other end is connected to the shoulder of the large diameter hole and the small diameter hole.

[0023] In the optimized solution, one end of the outer cylinder 5 is coaxially connected to the guide sleeve 4 , a guide through hole is provided on the guide sleeve 4 , the guide through hole is connected to the stepped through hole, and the pull rod 3 passes through the guide through hole of the guide sleeve 4 .

[0024] In this embodiment, the electromagnetic chuck 2 is an electromagnet.

[0025] In the optimized solution, one end of the pull rod 3 is connected to the mounting plate, and a threaded through hole is provided on the mounting plate. The bolts pass through the threaded through holes on the mounting plate in turn and are connected to the threaded holes of the electromagnetic suction cup 2, so that the electromagnetic suction cup 2 is installed on the mounting plate, so that the electromagnetic suction cup 2 of different sizes can be easily disassembled and replaced.

[0026] like Figure 3 As shown, a tension adjustment mechanism 6 is installed in the large diameter hole of the outer cylinder 5, and the tension adjustment mechanism 6 includes a screw 603, a threaded sleeve and a rotating handle 601. A placement cavity is provided at the large diameter hole of the outer cylinder 5, and a threaded sleeve is installed inside the placement cavity. The threaded sleeve is provided with a threaded through hole, and one end of the screw 603 passes through the threaded through hole of the threaded sleeve and cooperates with the thread. One end of the screw 603 is pressed against the top ring 604, and the other end is provided with a square blind hole.

[0027] One end of the rotating handle 601 is fixedly connected to the square guide rod 602, the square guide rod 602 corresponds to the square blind hole, and the square guide rod 602 is inserted into the square blind hole of the screw rod 603 and slides with the square blind hole.

[0028] In the optimized solution, the square guide rod 602 is connected to the bottom of the square blind hole via a fourth spring, and the fourth spring can buffer the square guide rod 602 and the bottom of the square blind hole.

[0029] The pull rod 3, the screw rod 603, the square guide rod 602 and the rotating handle 601 are respectively provided with wire through holes, and the power line of the electromagnetic suction cup 2 passes through the above-mentioned wire through holes in turn to be connected to the power source.

[0030] After the electromagnetic chuck 2 is powered on, it can absorb the plug 1. The plug 1 has a cylindrical structure and an arc-shaped protrusion on the upper end surface. The plug 1 has multiple size structures to meet the requirements of pits of different sizes.

[0031] The threaded sleeve comprises two halves of a threaded barrel 605, which are elastically connected and combined into a complete threaded sleeve. The two halves of the threaded barrel 605 are movably installed in the placement cavity, and guide blind holes are respectively provided on the two outer wall cross sections of one half of the threaded barrel 605, and a second spring is installed in the guide blind holes. Guide shafts corresponding to the guide blind holes are respectively provided on the outer wall cross sections of the other half of the threaded barrel 605, and the guide shafts are inserted into the guide blind holes and compress the second spring.

[0032] The wall of the outer cylinder 5 is provided with symmetrically distributed long strip through holes, and a shift block 607 is installed in the long strip through hole. The shift block 607 slides with the two side walls of the long strip through hole. The specific cooperation method is: the two side walls of the long strip through hole are respectively provided with sliding grooves, and the two side walls of the shift block 607 are respectively provided with sliders corresponding to the sliding grooves. The sliders are placed in the sliding grooves and slide with them.

[0033] like Figure 4 As shown, the lower end of the shift block 607 is provided with an inclined surface, and the outer walls of the two half threaded barrels 605 are respectively installed with guide plates 606, which are slidably matched with the long strip through holes on the outer barrel 5, and the guide plates 606 are provided with an inclined surface corresponding to the inclined surface of the shift block 607. The shift block 607 is pressed on the upper end of the guide plate 606 to compress the second spring, and the two half threaded barrels 605 are combined into a completed threaded sleeve. The inclined surface of the shift block 607 and the inclined surface of the guide plate 606 are attached to each other, and one end of the shift block 607 is connected to the outer barrel 5 through the third spring. When the shift block 607 is shifted so that it is no longer pressed on the upper end of the guide plate 606, due to the action of the second spring, the two half threaded barrels 605 are separated from each other and no longer threadedly matched with the screw rod 603.

[0034] In the optimized solution, grooves are respectively provided on the side walls around the elongated through hole of the outer cylinder 5, and sealing plates 608 are respectively provided around the shift block 607. The sealing plates 608 are placed in the grooves to seal the elongated through hole. During the process of shifting the shift block 607, the sealing plates 608 can always seal the elongated through hole.

[0035] The operation process is as follows: place the top head 1 inside the aircraft skin, place the electromagnetic suction cup 2 outside the aircraft skin, use the electromagnetic suction cup 2 to absorb the top head 1, turn the rotary handle 601 to drive the screw 603 to rotate, the screw 603 presses the pull rod 3 outward through the top ring 604 to compress the first spring, and by turning the rotary handle 601, the movement displacement of the screw 603 can be controlled, and then the compression amount of the first spring can be controlled to achieve the final control of the rebound tension of the pull rod 3. Place the top head 1 inside the aircraft skin, place the electromagnetic suction cup 2 outside the aircraft skin, use the electromagnetic suction cup 2 to absorb the top head 1, and when the dial block 607 is moved so that it is no longer pressed on the upper end of the guide plate 606, due to the action of the second spring, the two halves of the threaded cylinder 605 are separated from each other and no longer cooperate with the screw 603 thread, so that the first spring is reset, driving the pull rod 3 to reset, and the pull rod 3 is pulled out of the aircraft skin pit through the electromagnetic suction cup 2 and the top head 1.

[0036] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. An aircraft skin dent repair device, characterized in that: The invention comprises an outer tube (5), a pull rod (3) and a tension adjustment mechanism (6); the outer tube (5) is provided with a stepped through hole distributed along the axis, the stepped through hole is divided into a large diameter hole and a small diameter hole, one end of the pull rod (3) passes through the small diameter hole to be connected to the top ring (604), and the other end is connected to the electromagnetic suction cup (2); the top ring (604) is placed in the large diameter hole and slidably cooperates with the large diameter hole; a first spring is sleeved on the outer side of the pull rod (3), one end of the first spring is connected to the top ring (604), and the other end is connected to the shoulder of the large diameter hole and the small diameter hole; the outer tube A tension adjustment mechanism (6) is installed in the large diameter hole of (5), and the tension adjustment mechanism (6) includes a screw (603), a threaded sleeve and a rotating handle (601). A placement cavity is provided at the large diameter hole of the outer tube (5), and a threaded sleeve is installed inside the placement cavity. A threaded through hole is provided on the threaded sleeve. One end of the screw (603) passes through the threaded through hole of the threaded sleeve and is threadedly matched with the thread. One end of the screw (603) is pressed against the top ring (604), and the other end is provided with a square blind hole. One end of the rotating handle (601) is connected to the square guide rod (602). ) is connected, the square guide rod (602) is inserted into the square blind hole of the screw rod (603) and slides with the square blind hole; the threaded sleeve comprises two half threaded cylinders (605), the two half threaded cylinders (605) are elastically connected and combined to form a complete threaded sleeve, and the two half threaded cylinders (605) are movably installed in the placement cavity; the wall of the outer cylinder (5) is provided with symmetrically distributed long strip through holes, and a shifting block (607) is installed in the long strip through hole, and the shifting block (607) slides with the two side walls of the long strip through hole; the lower end of the shifting block (607) An inclined surface is provided, and guide plates (606) are respectively installed on the outer walls of the two half threaded cylinders (605). An inclined surface corresponding to the inclined surface of the shift block (607) is provided on the guide plate (606). The shift block (607) is pressed on the upper end of the guide plate (606). The inclined surface of the shift block (607) and the inclined surface of the guide plate (606) are in contact with each other. One end of the shift block (607) is connected to the outer cylinder (5) via a third spring. The electromagnetic suction cup (2) is used in conjunction with the ejector head (1). After the electromagnetic suction cup (2) is powered on, it can absorb the ejector head (1).

2. The aircraft skin dent repair device according to claim 1, characterized in that: One end of the outer cylinder (5) is coaxially connected to the guide sleeve (4). The guide sleeve (4) is provided with a guide through hole, which is connected to the stepped through hole. The pull rod (3) passes through the guide through hole of the guide sleeve (4).

3. The aircraft skin dent repair device according to claim 1, characterized in that: One end of the pull rod (3) is connected to a mounting plate, a threaded through hole is provided on the mounting plate, bolts pass through the threaded through holes on the mounting plate in sequence and are connected to the threaded holes of the electromagnetic chuck (2), so that the electromagnetic chuck (2) is mounted on the mounting plate.

4. The aircraft skin dent repair device according to claim 1, characterized in that: The square guide rod (602) is connected to the bottom of the square blind hole via a fourth spring.

5. The aircraft skin dent repair device according to claim 1, characterized in that: The pull rod (3), the screw rod (603), the square guide rod (602) and the rotating handle (601) are respectively provided with wire through holes, and the power line of the electromagnetic suction cup (2) passes through the wire through holes in turn to be connected to the power source.

6. The aircraft skin dent repair device according to claim 1, characterized in that: Two outer wall cross sections of one half of the threaded cylinder (605) are respectively provided with guide blind holes, in which the second spring is installed, and the outer wall cross sections of the other half of the threaded cylinder (605) are respectively provided with guide shafts corresponding to the guide blind holes, which are inserted into the guide blind holes and compress the second spring.

7. The aircraft skin dent repair device according to claim 1, characterized in that: Slide grooves are respectively arranged on the two side walls of the long strip through hole of the outer cylinder (5), and sliding blocks corresponding to the slide grooves are respectively arranged on the two side walls of the shifting block (607), and the sliding blocks are placed in the slide grooves and slideably cooperate with the slide grooves.

8. The aircraft skin dent repair device according to claim 1, characterized in that: Grooves are respectively provided on the side walls around the elongated through hole of the outer cylinder (5), and sealing plates (608) are respectively provided around the shifting block (607). The sealing plates (608) are placed in the grooves to seal the elongated through hole.

Images