A special fixing device for a catapult

Abstract

The utility model relates to a special fixing device of ejection tube belongs to ejection lifesaving device technical field, including fixed limiting frame, fixed limiting frame includes frame body, is fixed with two first limiting portions and two second limiting portions who set up oppositely on the frame body, two second limiting portions are located between two first limiting portions, still include connecting pin, the pin hole is seted up on the first limiting portion, and the connecting pin is used for passing through the pin hole and the middle hole of pulley assembly on the cabin wall board connection, the clamping groove is seted up on the second limiting portion, and the clamping groove is used for with the protruding of the upper clamp both sides on the upper end of ejection tube inner tube and connects, through two first limiting portions and the cooperation of pulley assembly, can limit the position of fixed limiting frame, make fixed limiting frame and pulley assembly, upper clamp fixed connection, because the position of pulley assembly on the cabin wall board is fixed, can limit the rotation around the axle of ejection tube inner tube, only one person can carry out the dismounting operation of nut, avoids the problem that the tacit understanding of two people cooperation is poor.

Description

Technical Field

[0001] This utility model relates to the field of ejection rescue device technology, and in particular to a special fixing device for ejection tubes. Background Technology

[0002] The TST6 ejection tube is an important component of the ejection escape system, serving as a crucial part connecting the seat to the aircraft cockpit and the primary power source for ejection. The TST6 ejection tube employs a three-stage sleeve structure, consisting of an outer cylinder, middle cylinder, inner cylinder, grate, upper and lower clamps, firing mechanism, locking mechanism, and support arm assembly.

[0003] The TST6 ejection tube is fixed to the rear bulkhead of the cockpit by the lower clamp of the outer tube. The ejection seat is installed and fixed in the cockpit by the upper clamp of the ejection tube and three sets of pulleys on the rear bulkhead. The upper end of the inner tube is provided with external threads for installing the firing mechanism and the upper clamp for fixing the seat. At the same time, it is connected to the outer tube by the latch at the lower end of the ejection tube. The latch uses a piston compression spring to lock the steel ball into the slide groove. The inner tube can rotate freely 360 degrees along the axis of the ejection tube.

[0004] The assembly method of the aforementioned catapult requires two people to work together when disassembling and assembling the firing mechanism. One person fixes the upper clamp of the inner tube of the catapult to restrict the rotation of the inner tube, while the other person uses a special wrench to disassemble and assemble the outer nut and locking nut that fix the firing mechanism. During the disassembly and assembly work, there may be problems such as improper coordination between the two people. Because the locking force required for the two nuts is large, it is easy to cause problems such as injury, damage to parts, and insufficient assembly locking force. Utility Model Content

[0005] To address the technical problems of existing catapults with inner and outer cylinder structures, where the firing mechanism requires two people to operate during disassembly and assembly, improper coordination between the two personnel can easily lead to injuries, damage to parts, and insufficient assembly and locking force, this utility model provides a special fixing device for catapults.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a dedicated fixing device for a catapult, including a fixing and limiting frame. The fixing and limiting frame includes a frame body, on which two first limiting parts and two second limiting parts are fixedly arranged opposite each other, with the two second limiting parts located between the two first limiting parts. It also includes a connecting pin. The first limiting parts have pin holes, through which the connecting pin passes to connect with the central hole of a pulley assembly on the cockpit wall panel. The second limiting parts have slots, which engage with protrusions on both sides of a clamp on the upper end of the inner cylinder of the catapult. The device is secured by the two first limiting parts. The cooperation between the positioning part and the pulley assembly can restrict the lateral and vertical movement of the fixed limiting frame. The engagement between the second limiting part and the protrusions on both sides of the upper clamp of the inner cylinder can restrict the rotation of the fixed limiting frame. With the joint cooperation of the first and second limiting parts, the position of the fixed limiting frame can be limited. At the same time, it can also restrict the rotation of the inner cylinder of the ejection tube around the axis. Only one person is needed to perform the disassembly and assembly of the nut, which facilitates the operation and avoids the problem of poor coordination between two people, effectively improving work efficiency and assembly locking force.

[0008] Preferably, the frame is a plate-shaped structure, with two first limiting parts fixedly installed at both ends of the frame. The two first limiting parts and the frame are combined to form a U-shaped structure, which is used to fasten the whole to the top of the launch tube and pulley assembly.

[0009] Preferably, the second limiting part is an inverted F-shaped structure, which facilitates engagement with the protrusion on the side of the upper clamp.

[0010] Preferably, the slot is arranged horizontally, and the slot is used to engage and limit the movement of the protrusion on the side of the upper clamp. This not only limits the rotation of the inner cylinder, but also limits the rotation of the fixed limiting frame around the connecting pin.

[0011] Preferably, the first limiting part includes a vertical section and an inclined section. The top end of the inclined section is fixedly connected to the frame, and the bottom end of the inclined section is fixedly connected to the vertical section. The pin hole is opened on the vertical section, so that the frame is away from the vertical section, avoiding the frame from obstructing the firing mechanism and facilitating the nut disassembly and assembly.

[0012] Preferably, one end of the slot is open and the other end is closed. The open end of the slot is far away from the first limiting part. Due to the inclined setting of the inclined section, under the action of gravity, a backward force can be applied to the frame and the second limiting part, so that the fixed limiting frame has a rotation tendency in one direction during use. This allows the second limiting part to be firmly attached to the protrusion on the side of the upper clamp, effectively restricting the rotation of the fixed limiting frame and realizing the limiting of the fixed limiting frame without the need for manual support during operation.

[0013] Preferably, the frame, the first limiting part, and the second limiting part are all plate-shaped structures, which reduces the overall weight.

[0014] Preferably, the connecting pin has a stepped shaft structure, which can restrict the position of the connecting pin and facilitate the connecting pin being pulled out of the pin hole.

[0015] Preferably, each first limiting part is fixedly provided with a connecting part, which is connected to the connecting pin by a rope, which facilitates the carrying and use of the connecting pin and avoids the loss of the connecting pin.

[0016] Preferably, the rope is movably connected to the connecting pin and the first limiting part through a connecting ring, which improves the freedom of movement of the connecting pin and facilitates its use.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. The connecting pin passes through the pin hole and connects to the central hole of the pulley assembly on the cockpit wall panel. Through the cooperation of the two first limiting parts and the pulley assembly, the lateral and vertical movement of the fixed limiting frame can be restricted. The second limiting part engages with the protrusions on both sides of the upper clamp on the inner cylinder. Through the joint cooperation of the first limiting part and the second limiting part, the position of the fixed limiting frame is limited. At the same time, since the position of the pulley assembly on the cockpit wall panel is fixed, the two second limiting parts can also be used to restrict the rotation of the inner cylinder of the ejection tube around the axis. Only one person is needed to perform the disassembly and assembly of the nut, which facilitates the operation and avoids the problem of poor coordination between two people, effectively improving work efficiency and assembly locking force.

[0019] 2. The top of the inclined section is fixedly connected to the frame, and the bottom of the inclined section is fixedly connected to the vertical section. The pin hole is opened on the vertical section, so that the frame is away from the vertical section, avoiding the frame from obstructing the firing mechanism and facilitating the installation and removal of the nut.

[0020] 3. The opening end of the slot is far away from the first limiting part. Due to the inclined setting of the inclined section, under the action of gravity, it can apply a backward force to the frame and the second limiting part, so that the fixed limiting frame has a rotation tendency in one direction during use. With the setting of the inverted F-shaped structure of the second limiting part, the second limiting part can be firmly attached to the protrusion on the side of the upper clamp, effectively restricting the rotation of the fixed limiting frame and realizing the limiting of the fixed limiting frame. There is no need to hold it by hand during the operation. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of the catapult-specific fixing device according to one or more embodiments of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of the fixed limiting frame according to one or more embodiments of the present invention;

[0024] Figure 3 This is a front view structural diagram of the fixed limiting frame according to one or more embodiments of the present invention;

[0025] Figure 4 This is a side cross-sectional view of the fixed limiting frame according to one or more embodiments of the present invention.

[0026] Figure 5 This is a top view of the fixed limiting frame according to one or more embodiments of the present invention.

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Fixed limiting frame; 2. Rope; 3. Connecting pin; 4. Connecting ring; 5. Frame body; 6. First limiting part; 61. Vertical section; 62. Inclined section; 7. Second limiting part; 8. Connecting part; 9. Pin hole; 10. Slot. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] Example 1

[0031] In a typical embodiment of this utility model, such as Figures 1-5As shown, a special fixing device for catapults is proposed, including: a fixing limit frame 1 and a connecting pin 3. The fixing limit frame 1 includes a frame body 5, two oppositely arranged first limiting parts 6 and two oppositely arranged second limiting parts 7. The two second limiting parts 7 are fixedly arranged between the two first limiting parts 6. The first limiting parts 6 have pin holes 9. The connecting pin 3 is used to pass through the pin holes 9 and connect with the central hole of the pulley assembly on the cockpit wall. Through the cooperation of the two first limiting parts 6 and the pulley assembly, the lateral and vertical movement of the fixing limit frame 1 is restricted. The second limiting parts 7 are used to engage with the protrusions on both sides of the upper clamp of the inner cylinder. Through the joint cooperation of the first limiting parts 6 and the second limiting parts 7, the position of the fixing limit frame 1 is limited. At the same time, the rotation of the inner cylinder of the catapult is also restricted. Only one person is needed to perform the disassembly and assembly of the nut, which is convenient for operation and avoids the problem of poor coordination between two people, effectively improving work efficiency and assembly locking force.

[0032] In this embodiment, the components of the fixed limiting frame 1 are fixed by welding. In other embodiments, the fixed limiting frame 1 can also be manufactured by integral molding.

[0033] like Figure 2 and Figure 3 As shown, the fixed limiting frame 1 includes a frame body 5, a first limiting part 6, and a second limiting part 7. There are two of each of the first limiting part 6 and the second limiting part 7. The frame body 5, the first limiting part 6, and the second limiting part 7 are all plate-shaped structures. The two first limiting parts 6 are fixedly disposed at both ends of the frame body 5. The two first limiting parts 6 and the frame body 5 combine to form a U-shaped structure for overall fastening above the launch tube and pulley assembly. A pin hole 9 is provided on the first limiting part 6. In actual use, the pin hole 9 is coaxially arranged with the central hole of the pulley assembly. The connecting pin 3 passes through the pin hole 9 and is inserted into the central hole, thereby restricting the lateral and vertical movement of the entire fixed limiting frame 1. Two second limiting parts 7 are fixedly installed on the frame body 5 and located between the two first limiting parts 6. In this embodiment, the second limiting part 7 is an inverted F-shaped structure. The second limiting part 7 is provided with a slot 10. During use, the slot 10 is set horizontally and is used to engage with the protrusion on the side of the upper clamp for limiting. This not only restricts the rotation of the inner cylinder, but also restricts the rotation of the entire fixed limiting frame 1 around the connecting pin 3.

[0034] In this embodiment, the distance between the two first limiting parts 6 is not less than the overall length of the pulley assembly; the distance between the two second limiting parts 7 is not less than the outer diameter of the upper clamp and not greater than the distance between the protruding ends on both sides of the upper clamp, so as to ensure effective locking and limiting.

[0035] like Figure 1 and Figure 2As shown, the fixed limiting frame 1 is also fixedly provided with two connecting parts 8. Specifically, each first limiting part 6 is fixedly provided with a corresponding connecting part 8. The connecting part 8 is connected to the connecting pin 3 through the rope 2. The rope 2 is movably connected to the connecting pin 3 and the first limiting part 6 through the connecting ring 4, thereby connecting the connecting pin 3 to the fixed limiting frame 1, which facilitates the carrying and use of the connecting pin 3 and avoids the loss of the connecting pin 3.

[0036] It is understood that in other embodiments, the connecting pin 3 can also be stored and carried independently for use. The specific choice can be made according to actual needs, and no further restrictions are imposed here.

[0037] The connecting pin 3 has a stepped shaft structure. The maximum diameter of the connecting pin 3 is greater than the diameter of the pin hole 9, and the minimum diameter of the connecting pin 3 is not greater than the diameter of the pin hole 9. This restricts the position of the connecting pin 3 and makes it easier for the connecting pin 3 to be pulled out of the pin hole 9.

[0038] like Figure 4 As shown, the first limiting part 6 includes a vertical section 61 and an inclined section 62. The inclined section 62 is fixedly connected to the vertical section 61 as a whole. Both the inclined section 62 and the vertical section 61 are plate-shaped structures. The top end of the inclined section 62 is fixedly connected to the frame 5, and the bottom end of the inclined section 62 is fixedly connected to the vertical section 61. The pin hole 9 is opened on the vertical section 61. The inclined section 62 is inclined towards the rear of the vertical section 61, so that the frame 5 is located behind the vertical section 61, avoiding the frame 5 from obstructing the firing mechanism and facilitating the installation and removal of the nut.

[0039] The second limiting part 7 is an inverted F-shaped structure. The second limiting part 7 is provided with a horizontal slot 10. One end of the slot 10 is open and the other end is closed. The open end of the slot 10 is far away from the first limiting part 6. Since the inclined section 62 is inclined backward, under the action of gravity, it can apply a backward force to the frame 5 and the second limiting part 7, so that the fixed limiting frame 1 has a rotation tendency in one direction during use. With the setting of the inverted F-shaped structure of the second limiting part 7, the second limiting part 7 can be firmly attached to the protrusion on the side of the upper clamp, effectively restricting the rotation of the fixed limiting frame 1 and realizing the limiting of the fixed limiting frame 1 without the need for manual support during operation.

[0040] The specific working principle is as follows:

[0041] In use, the fixed limiting frame 1 is fastened to the top of the launch tube and the pulley assembly, so that the pulley assembly on the cockpit wall is located between the two first limiting parts 6, and the upper clamp of the inner cylinder is located between the two second limiting parts 7. The pin hole 9 on the first limiting part 6 is aligned with the middle hole of the pulley assembly, and the protrusions on both sides of the upper clamp of the inner cylinder are engaged in the corresponding slots 10 of the second limiting parts 7. Finally, the connecting pin 3 is passed through the pin hole 9 and inserted into the middle hole of the pulley assembly to complete the installation of the fixed limiting frame 1. Since the position of the pulley assembly on the cockpit wall is fixed, the rotation of the inner cylinder can be effectively restricted through the cooperation between the first limiting part 6 and the second limiting part 7.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A launcher specific fixture comprising: The fixed limiting frame (1) is characterized in that the fixed limiting frame (1) includes a frame body (5), and two first limiting parts (6) and two second limiting parts (7) are fixedly provided on the frame body (5) and are located between the two first limiting parts (6); It also includes a connecting pin (3), a pin hole (9) is provided on the first limiting part (6), the connecting pin (3) is used to pass through the pin hole (9) and connect with the middle hole of the pulley assembly on the cockpit wall, and a slot (10) is provided on the second limiting part (7), the slot (10) is used to engage with the protrusions on both sides of the upper end of the inner cylinder of the ejection tube.

2. The special fixing device for catapults according to claim 1, characterized in that, The frame (5) is a plate-shaped structure. Two first limiting parts (6) are fixedly installed at both ends of the frame (5). The two first limiting parts (6) and the frame (5) are combined to form a U-shaped structure.

3. The special fixing device for catapults according to claim 1, characterized in that, The second limiting part (7) is an inverted F-shaped structure.

4. The special fixing device for catapults according to claim 1, characterized in that, Card slot (10) is set horizontally.

5. The special fixing device for catapults according to claim 1, characterized in that, The first limiting part (6) includes a vertical section (61) and an inclined section (62). The top end of the inclined section (62) is fixedly connected to the frame (5), and the bottom end of the inclined section (62) is fixedly connected to the vertical section (61). The pin hole (9) is opened on the vertical section (61).

6. The special fixing device for catapults according to claim 5, characterized in that, One end of the card slot (10) is open and the other end is closed, with the open end of the card slot (10) being far away from the first limiting part (6).

7. The special fixing device for catapults according to claim 1, characterized in that, The frame (5), the first limiting part (6), and the second limiting part (7) are all plate-shaped structures.

8. The special fixing device for catapults according to claim 1, characterized in that, The connecting pin (3) is a stepped shaft structure.

9. The special fixing device for catapults according to claim 1, characterized in that, Each first limiting part (6) is fixedly provided with a connecting part (8), and the connecting part (8) is connected to the connecting pin (3) by a rope (2).

10. The special fixing device for catapults according to claim 9, characterized in that, The rope (2) is movably connected to the connecting pin (3) and the first limiting part (6) via the connecting ring (4).

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