Auxiliary tool for disassembling and assembling airbus pilot seat backrest actuating cylinder

Abstract

The utility model discloses an auxiliary tool for dismounting and assembling the backrest actuating cylinder of airbus pilot seat, including clamp assembly and drive assembly. Clamp assembly includes chuck and tail plate, and chuck and tail plate are connected through double slide bar, and the double slide bar is slidably provided with sliding block, and drive assembly drives the sliding block to slide on the double slide bar, thereby making the chuck of clamp assembly bear against the first end of actuating cylinder, and the sliding block bears against the second end of actuating cylinder, and under the drive of drive assembly, the telescopic shaft of actuating cylinder can be accurately shortened. The chuck of clamp assembly is connected by support block and arc plate, and the support block is connected with double slide bar, and the arc of arc plate is adapted to actuating cylinder. The arc plate is provided with limit cap, and the limit cap is provided with the clamping opening. Drive assembly includes screw rod and the second nut connected at the end of screw rod. The tool is driven by screw rod and retracts actuating cylinder, and linear mechanical movement makes the retraction amount of actuating cylinder more accurate, avoiding damaging actuating cylinder support.

Description

Technical Field

[0001] This utility model relates to the field of aircraft ground maintenance technology, and in particular to an auxiliary tool for disassembling and assembling the actuator cylinder of an Airbus pilot seat back. Background Technology

[0002] When performing maintenance or replacement of the Airbus pilot seat back actuator, it is necessary to disassemble and install the actuator. The traditional method involves maintenance personnel manually pressing or prying the actuator's extension rod with conventional tools, and using the limit pin on the seat back for assistance, to keep the actuator in a shortened stroke state (measured stroke 0–38mm) before the actuator can be removed or installed. Due to the limited operating space and the fact that the fixing bracket connecting the actuator to the actuator lug is made of plastic, manual continuous pressing or prying is difficult to control the range and precision of operation, which can easily lead to bracket breakage. The unit cost of the actuator bracket is approximately US$114, often resulting in parts scrap, extended maintenance cycles, flight delays, and personnel safety risks. Currently, there are no dedicated disassembly and installation tools for this problem, both domestically and internationally, and maintenance units generally rely on manual operation, resulting in significant technical and efficiency bottlenecks. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an auxiliary tool for disassembling and assembling the actuator cylinder of an Airbus pilot's seat back, thereby overcoming the deficiencies in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An auxiliary tool for removing and installing an actuator cylinder from an Airbus pilot's seat back includes a clamping assembly and a drive assembly for driving the clamping assembly to clamp the actuator cylinder. The clamp assembly includes a chuck and a tail plate arranged opposite each other. The chuck and the tail plate are fixedly connected by two parallel sliding rods. A slider is slidably arranged on the two sliding rods. The slider is located between the chuck and the tail plate. A drive assembly drives the slider to slide on the two sliding rods, so that the chuck of the clamp assembly abuts against the first end of the actuating cylinder, and the slider abuts against the second end of the actuating cylinder. Under the continuous drive of the drive assembly, the telescopic shaft of the actuating cylinder can accurately shorten its stroke.

[0005] Furthermore, the clamping head of the clamping assembly is integrally connected to a support block and an arc-shaped plate. The support block is fixed on the outer circumferential wall of the arc-shaped plate and is fixedly connected to the double sliding rod. The curvature of the inner wall of the arc-shaped plate is adapted to the cylinder of the actuating cylinder.

[0006] Furthermore, a limiting cover is provided at the top of the arc-shaped plate, and a clamping opening is provided on the limiting cover for the lug of the actuator to pass through.

[0007] Furthermore, a first nut is fixedly provided on the bottom surface of the tail plate of the clamping assembly. The screw hole of the first nut corresponds to the through hole opened on the tail plate, so that the screw in the drive assembly can pass through the tail plate and be screwed to the first nut.

[0008] Furthermore, the drive assembly includes a screw and a second nut fixedly connected to the end of the screw.

[0009] Preferably, a positioning groove is provided on the top surface of the slider.

[0010] Preferably, the screw is of model M8*1.25 and its length is 50mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) The Airbus pilot seat back actuator removal and installation auxiliary tool in this case has a simple structure, is easy to operate, and is safe and reliable. It uses the mechanical method of linear screw movement to precisely adjust the retraction stroke of the actuator, avoiding the risk of plastic bracket breakage caused by manual pressing or prying of the actuator retraction, effectively reducing maintenance costs and improving maintenance efficiency and quality.

[0012] 2) The Airbus pilot seat back actuator assembly and disassembly auxiliary tool in this case is highly efficient and reliable, reducing the single operation time from 8.5 minutes to less than 3 minutes; after multiple cyclic tests, the actuator bracket has a 100% integrity rate, completely eliminating the possibility of plastic bracket breakage.

[0013] 3) The Airbus pilot seat back actuator assembly and disassembly auxiliary tool in this case can precisely control the linear movement of the screw, with a repeatability of ±0.5mm, and is compatible with actuator interfaces of different aircraft models.

[0014] To provide a clearer understanding of this invention, the preferred embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a three-dimensional rendering of the present invention; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a structural schematic diagram of the clamp assembly of this utility model; Figure 4 This is a schematic diagram of the slider of this utility model; Figure 5 This is a schematic diagram of the structure of the drive component of this utility model; Figure 6 , Figure 7 This is a reference diagram showing the usage state of this utility model.

[0016] Attached image labels: 1-Clamping head, 2-Tail plate, 3-Double slide bar, 4-Slider; 11-Support block, 12-Arc plate, 13-Limit cover, 14-Clamping opening; 21-First nut; 41-Positioning groove; 81-Screw, 82-Second nut; 100-Actuating cylinder. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] Furthermore, if terms such as "first" or "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, components or parts, and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Please also refer to Figure 1-7 This utility model provides an auxiliary tool for disassembling and assembling the actuator cylinder of an Airbus pilot seat backrest, including a clamping assembly and a drive assembly for driving the clamping assembly to clamp the actuator cylinder.

[0021] The clamp assembly includes a chuck 1 and a tail plate 2 arranged opposite to each other. The chuck 1 and the tail plate 2 are fixedly connected by a double slide bar 3 arranged side by side. A slider 4 is slidably arranged on the double slide bar 3. The slider 4 is located between the chuck 1 and the tail plate 2. The drive assembly drives the slider 4 to slide on the double slide bar 3, so that the chuck 1 end of the clamp assembly abuts against the first end of the actuator cylinder 100, and the slider 4 abuts against the second end of the actuator cylinder 100. Under the continuous drive of the drive assembly, the telescopic shaft of the actuator cylinder 100 can accurately shorten its stroke. With the cooperation of the original limit pin on the aircraft (not shown), the actuator cylinder 100 can be easily disassembled and assembled without causing the actuator cylinder 100 bracket to break or be damaged.

[0022] The clamp 1 of the clamp assembly is integrally connected by a support block 11 and an arc plate 12. The support block 11 is fixed on the outer circumference of the arc plate 12 and is fixedly connected to the double slide rod 3. The curvature of the inner wall of the arc plate 12 is adapted to the cylinder of the actuator 100, so that the arc plate 12 can laterally fit the actuator 100.

[0023] A limiting cover 13 is provided at the top of the arc plate 12. A clamping opening 14 is provided on the limiting cover 13. The clamping opening 14 allows the lug of the actuator 100 to pass through, which serves to avoid interference and also ensures that the arc plate 12 can stably cover the actuator 100.

[0024] A first nut 21 is fixedly installed on the bottom surface of the tail plate 2 of the clamping assembly. The screw hole of the first nut 21 corresponds to the through hole opened on the tail plate 2, so that the screw 81 in the drive assembly can pass through the tail plate 2 and be screwed to the first nut 21. When the screw 81 in the drive assembly is rotated, the screw 81 moves upward and lifts the slider 4. The slider 4 pushes the telescopic shaft of the actuator cylinder 100, thereby causing the telescopic shaft of the actuator cylinder 100 to retract, so that the actuator cylinder 100 can be easily removed.

[0025] Preferably, in this embodiment, a positioning groove 41 is provided on the top surface of the slider 4. The positioning groove 41 is used to position the telescopic shaft of the actuator 100 to prevent the telescopic shaft of the actuator 100 from deviating when it is compressed.

[0026] The drive assembly includes a screw 81 and a second nut 82 fixedly connected to the end of the screw 81. An external short rod can be inserted into the screw hole of the second nut 82 to facilitate the rotation of the screw 81.

[0027] Preferably, in this embodiment, the screw 81 is model M8*1.25 and its length is 50mm.

[0028] Please refer to the appendix for the working principle. Figures 6-7 : 1. Place the clamping assembly of this tool onto the actuator cylinder 100; 2. Rotary drive assembly: Screw 81 moves upward to lift slider 4, and slider 4 pushes the telescopic shaft of actuator cylinder 100 to retract; 3. By using the existing limit pin on the back of the aircraft pilot's seat to keep the actuator 100 in the retracted state, the actuator 100 can be easily removed from the confined space.

[0029] Compared to existing technologies, the Airbus pilot seat back actuator removal and installation auxiliary tool of this case has a simple structure, is easy to operate, and is safe and reliable. It uses the mechanical method of linear screw movement to precisely adjust the retraction stroke of the actuator, avoiding the risk of plastic bracket breakage caused by manual pressing or prying of the actuator retraction, effectively reducing maintenance costs and improving maintenance efficiency and quality.

[0030] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat backrest, characterized in that: Includes a clamping assembly and a drive assembly for driving the clamping assembly to clamp the actuating cylinder (100); The clamp assembly includes a chuck (1) and a tail plate (2) arranged opposite to each other. The chuck (1) and the tail plate (2) are fixedly connected by a double slide bar (3) arranged side by side. A slider (4) is slidably arranged on the double slide bar (3). The slider (4) is located between the chuck (1) and the tail plate (2). The drive assembly drives the slider (4) to slide on the double slide bar (3), so that the chuck (1) of the clamp assembly abuts against the first end of the actuating cylinder (100), and the slider (4) abuts against the second end of the actuating cylinder (100). Under the continuous drive of the drive assembly, the telescopic shaft of the actuating cylinder (100) can accurately shorten its stroke.

2. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 1, characterized in that: The clamp (1) of the clamp assembly is integrally connected by a support block (11) and an arc plate (12). The support block (11) is fixed on the outer circumference of the arc plate (12) and fixedly connected to the double slide rod (3). The arc of the inner wall of the arc plate (12) is adapted to the cylinder of the actuating cylinder (100).

3. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 2, characterized in that: The top of the arc plate (12) is provided with a limiting cover (13), and the limiting cover (13) is provided with a clamp (14), through which the lug of the actuator (100) passes.

4. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 3, characterized in that: A first nut (21) is fixedly provided on the bottom surface of the tail plate (2) of the clamping assembly. The screw hole of the first nut (21) corresponds to the through hole opened on the tail plate (2), so that the screw (81) in the drive assembly can pass through the tail plate (2) and be screwed to the first nut (21).

5. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 4, characterized in that: The drive assembly includes a screw (81) and a second nut (82) fixedly connected to the end of the screw (81).

6. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 1, characterized in that: The top surface of the slider (4) is provided with a positioning groove (41).

7. The auxiliary tool for disassembling and assembling the actuator of an Airbus pilot's seat back as described in claim 5, characterized in that: The screw (81) is model M8*1.25 and its length is 50mm.

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