Ejection seat angle adjusting device

Abstract

The utility model provides an ejection seat angle adjusting device which comprises an ejection seat, an installation angle adjusting mechanism and a forced recovery mechanism, the ejection seat is fixed on a lower support of a cabin through bolts and can rotate around the lower support of the cabin, and the installation angle adjusting mechanism comprises an electric mechanism, a connecting plate, a sliding block and a sliding groove. The electric mechanism is provided with a lead screw capable of enabling the electric mechanism to stretch out and draw back, the lead screw can be driven by the electric mechanism to rotate, one end of the connecting plate is connected with the ejection seat through a bolt, the other end of the connecting plate is fixedly connected with the sliding block, the sliding block is clamped on the sliding groove and can move up and down along the sliding groove, and the connecting plate is further provided with a forced recovery mechanism enabling the connecting plate to recover to the initial ejection state. According to the utility model, the pilot can adjust the lying postures at different angles to improve the long-endurance flight comfort, the pilot can recover to the initial state under the emergency condition, the backup function is set when the motor fails, and the reliability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation ejection lifesaving, and relates to an ejection seat angle adjustment device and method. Background Art

[0002] During the high-altitude cruising phase, the fighter jet can be taken over by the artificial intelligence flight control system. The pilot's body posture remains unchanged during long-distance flights, and he is prone to fatigue and lumbar strain under complex environmental factors. The pilot's posture can be changed by adjusting the installation angle of the ejection seat, which effectively relieves pilot fatigue and helps the pilot to quickly restore combat effectiveness. In the prior art, the angle of the ejection seat is adjusted by installing a guide rail on the seat, which requires the seat to be modified, has a complex structure, and the posture is fixed after adjustment, and it cannot be quickly restored to the original ejection state during an emergency ejection. Utility Model Content

[0003] The purpose of the utility model is to propose an ejection seat angle adjustment device to solve the problem of the pilot adjusting the lying position at different angles to improve the flight comfort during long-duration flight. It can be restored to the initial state in an emergency and has high reliability.

[0004] Technical solution of the utility model: An ejection seat angle adjustment device includes an ejection seat, an installation angle adjustment mechanism and a forced recovery mechanism. The ejection seat is fixed to the lower support of the cockpit by bolts and can rotate around it. The installation angle adjustment mechanism includes an electric mechanism, a connecting plate, a slider and a slide groove. The electric mechanism is provided with a lead screw that can make it retractable and retractable. The lead screw can rotate under the drive of the electric mechanism. One end of the connecting plate is connected to the ejection seat by bolts, and the other end is fixedly connected to the slider. The slider is stuck in the slide groove and can move up and down along the slide groove. The connecting plate is also provided with a forced recovery mechanism to restore it to the initial ejection state.

[0005] In the above scheme, the forced recovery mechanism includes an explosive bolt and a gas power system connected thereto. One end of the explosive bolt is connected to an electric mechanism that enables it to be disconnected after working, and the other end is connected to a connecting plate. The working of the electric mechanism causes the screw assembly connected thereto to extend and retract.

[0006] In the above scheme, the forced recovery mechanism also includes an explosion mechanism, a gas pipeline, an actuator housing assembly, an actuator top rod assembly, a telescopic outer sleeve and a telescopic inner sleeve. One end of the actuator top rod assembly is inserted into the actuator housing assembly and can move up and down in the actuator housing, and the other end is connected to the connecting plate; the explosion mechanism, the actuator housing, and the telescopic outer sleeve are connected by a gas pipeline to form a gas channel, and the gas is transmitted to the explosive bolt through the telescopic outer sleeve and the telescopic inner sleeve in one way, so that it is disconnected after working; the other way is transmitted to the actuator housing assembly, pushing the actuator top rod assembly to move upward, and then pushing the connecting plate to move upward, so that the seat installation angle of the ejection seat becomes smaller until it returns to the initial ejection state.

[0007] In the above scheme, the installation angle adjustment switch and the cable assembly electrically connected thereto are arranged on one side of the ejection seat. The installation angle adjustment switch is connected to the electric mechanism through the cable assembly, and the electric mechanism operates to extend and retract its lead screw.

[0008] In the above solution, the electric mechanism has a self-locking function.

[0009] In the above scheme, the forced recovery mechanism also includes a forced recovery pull ring, a pull pin is provided on the explosion mechanism, and the forced recovery pull ring is installed on the pull pin.

[0010] In the above scheme, the actuator housing assembly and the telescopic outer sleeve are respectively fixed on the rear wall plate of the cabin.

[0011] In the above scheme, there are two sliders and two slide grooves, which are symmetrically arranged on the rear bulkhead, and the movement strokes of the two sliders in the two slide grooves are changed synchronously.

[0012] An ejection seat angle adjustment method, the adjustment steps are as follows:

[0013] Step 1: Turn on the switch to determine whether the electric mechanism is normal;

[0014] Step 2: When the electric mechanism is normal, push the switch forward to adjust the ejection seat angle to a suitable position through the installation angle adjustment mechanism;

[0015] Step 3: When the electric mechanism fails, the explosive bolt is first disconnected through the forced recovery mechanism and then the ejection seat angle is adjusted to the initial ejection position through the forced recovery actuator.

[0016] Among them, the forced recovery mechanism in step three is used for emergency ejection to quickly restore the ejection seat to the initial ejection position.

[0017] The advantages and beneficial effects of the utility model are as follows: a device and method for adjusting the installation angle of an ejection seat are proposed, and the installation angle of the ejection seat is adjusted by an electric mechanism, so that the pilot can choose a comfortable posture when cruising and resting at high altitude. A backup function is set in case of motor failure, and in an emergency, it can be adjusted to the initial state by the electric mechanism, and it can also be adjusted to the initial state by a forced recovery module, and has high reliability. The utility model can be applied to ejection seats in fighter jets, and can also be used for ground-assisted flight simulation, and has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the components of the installation angle adjustment device of the utility model;

[0019] Figure 2 This is a composition diagram of the installation angle adjustment mechanism 2 of the utility model;

[0020] Figure 3 This is another angle composition diagram of the installation angle adjustment mechanism 2 of the utility model;

[0021] Figure 4 This is a partial cross-sectional view of the installation angle adjustment device of the utility model;

[0022] Figure 5 This is a working schematic diagram of the installation angle adjustment mechanism of the utility model;

[0023] Figure 6 It is a composition diagram of the forced recovery mechanism 3 of the utility model;

[0024] Figure 7 It is a partial cross-sectional view of the forced recovery mechanism 3 of the utility model;

[0025] Figure 8 This is a schematic diagram of the connection between the installation angle adjustment mechanism 2 and the forced recovery mechanism 3 of the utility model;

[0026] Fig. 9 This is a working schematic diagram of the forced recovery mechanism of the utility model;

[0027] Fig.10 It is a schematic diagram of the initial state of the utility model;

[0028] Fig.11 It is a schematic diagram of the final state of the utility model.

[0029] In the figure, 1 is ejection seat, 2 is installation angle adjustment mechanism, 201 is installation angle adjustment switch, 202 is cable assembly, 203 is electric mechanism, 204 is connecting plate, 205 is sliding block, 206 is sliding groove, 3 is forced recovery mechanism, 301 is forced recovery pull ring, 302 is combustion mechanism, 303 is gas pipeline, 304 is actuator shell assembly, 305 is actuator push rod assembly, 306 is bolt, 307 is telescopic outer sleeve, 308 is telescopic inner sleeve, 309 is explosion bolt. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below through specific implementation modes:

[0031] Figure 1 As shown, an ejection seat installation angle adjustment device includes an ejection seat 1, an installation angle adjustment mechanism 2, and a forced recovery mechanism 3; the ejection seat 1 is fixed to the lower support of the cockpit by bolts and can rotate around it; the ejection seat 1 can adjust the seat installation angle from an initial state to a final state through the installation angle adjustment mechanism 2, and the adjustment range depends on the cockpit requirements; the ejection seat 1 can be adjusted to the initial state through the forced recovery mechanism 3.

[0032] Figure 2As shown in Figure 5, the installation angle adjustment mechanism 2 is composed of an installation angle adjustment switch 201, a cable assembly 202, an electric mechanism 203, a connecting plate 204, a slider 205, and a slide groove 206; the installation angle adjustment switch 201 is connected to the electric mechanism 203 through the cable assembly 202, and controls the electric mechanism 203 to extend and retract its screw rod assembly, and can automatically lock at the extreme position; the electric mechanism 203 is fixed to the rear wall of the cockpit by bolts, and the upper end of its screw rod assembly is connected to the connecting plate 204 through the explosive bolts in the forced recovery mechanism 3; the connecting plate 204 is connected to the ejection seat 1 by bolts; the slider 205 is fixed to the connecting plate 204 and can move up and down along the slide groove 206. The position of the connecting plate 204 is adjusted to make the ejection seat 1 rotate around the lower support to achieve the angle adjustment of the ejection seat 1.

[0033] Figure 6 As shown in Figure 9, the forced recovery mechanism 3 is composed of a forced recovery pull ring 301, an explosion mechanism 302, a gas pipeline 303, an actuator housing assembly 304, an actuator top rod assembly 305, a bolt 306, a telescopic outer sleeve 307, a telescopic inner sleeve 308, and an explosive bolt 309; the explosion mechanism 302, the gas pipeline 303, the actuator housing 304 and the telescopic outer sleeve 307 are all fixed on the rear wall of the cabin; the forced recovery pull ring 301 is installed on the pull pin on the explosion mechanism 302; the gas pipeline 303 is connected to the explosion mechanism 302, the actuator housing 304, and the telescopic outer sleeve 307; the actuator top rod assembly 305 can move up and down in the actuator housing 304, and is connected to the connecting plate 204 through the bolt 306; the telescopic inner sleeve 308 can move up and down in the telescopic outer sleeve 307, and is connected to the explosive bolt 309; the explosive bolt 309 is also used to connect the electric mechanism 203 and the connecting plate 204.

[0034] Working principle of the utility model

[0035] The working principle of the installation angle adjustment mechanism 2 is as follows: by turning the installation angle adjustment switch 201, the electric mechanism 203 screw rod assembly is controlled to extend and retract, and it can be automatically locked at the extreme position; the electric mechanism 203 drives the connecting plate 204 to move; one end of the connecting plate 204 rotates around the bolt connected to the ejection seat 1, and the other end is moved up and down along the slide groove 206 by the slider 205 fixed thereon; so that the ejection seat 1 rotates around the bolt on the cockpit support, and the seat installation angle changes. In this process, the actuator push rod assembly 305 connected to the connecting plate 204 can move up and down in the actuator housing 304, and the telescopic inner sleeve 308 connected to the explosive bolt can move up and down in the telescopic outer sleeve 307, so the forced recovery mechanism 3 does not affect the installation angle adjustment of the ejection seat 1. Among them, turning the switch forward makes the seat installation angle change from small to large; turning the switch backward makes the seat installation angle change from large to small.

[0036] The working principle of the forced recovery mechanism 3 is as follows: pulling the forced recovery pull ring 301 starts the explosion mechanism 302 to generate high-pressure gas which is transmitted through the gas pipeline 303, one way through the telescopic outer sleeve 307 and the telescopic inner sleeve 308 to the explosive bolt 309 to make it work; one way is transmitted to the actuator housing assembly 304, pushing the actuator top rod assembly 305 to move upward, and then pushing the connecting plate 204 to move upward, and the seat installation angle of the ejection seat 1 becomes smaller until it returns to the initial state.

[0037] The working principle of this utility model:

[0038] If the aircraft is flying normally or encountering an emergency but there is no need to quickly adjust the ejection seat to the initial state and the electric mechanism is working normally, the installation angle of the ejection seat can be adjusted by turning the installation angle adjustment switch;

[0039] If the aircraft encounters an emergency and needs to quickly adjust the ejection seat to the initial state, or the electric mechanism works abnormally and needs to be adjusted to the initial state, the ejection seat can be quickly returned to the initial state by activating the forced recovery mechanism. In the initial state, the pilot can activate the ejection seat to eject from the cabin.

[0040] The above technical solutions are only preferred embodiments of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made within the scope of the patent of the present application still fall within the protection scope of the present application.

Claims

1. An ejection seat angle adjustment device, comprising an ejection seat (1), a mounting angle adjustment mechanism (2) and a forced recovery mechanism (3), characterized in that: The ejection seat (1) is fixed to the lower support of the cabin by bolts and can rotate around it. The mounting angle adjustment mechanism (2) comprises an electric mechanism (203), a connecting plate (204), a slider (205) and a slide groove (206). The electric mechanism (203) is provided with a lead screw capable of extending and retracting the lead screw, which can rotate under the drive of the electric mechanism (203). One end of the connecting plate (204) is connected to the ejection seat (1) by bolts, and the other end is fixedly connected to the slider (205). The slider (205) is stuck on the slide groove (206) and can move up and down along the slide groove (206). The connecting plate (204) is also provided with a forced recovery mechanism (3) for restoring the slider to an initial ejection state.

2. The ejection seat angle adjustment device according to claim 1, characterized in that: The forced recovery mechanism (3) comprises an explosive bolt (309) and a gas power system connected thereto. One end of the explosive bolt (309) is connected to an electric mechanism (203) that enables it to be disconnected after operation, and the other end is connected to a connecting plate (204). When the electric mechanism (203) operates, the screw rod assembly connected thereto is extended and retracted.

3. The ejection seat angle adjustment device according to claim 2, characterized in that: The forced recovery mechanism (3) further comprises an explosion mechanism (302), a gas pipeline (303), an actuator housing assembly (304), an actuator top rod assembly (305), a telescopic outer sleeve (307) and a telescopic inner sleeve (308); one end of the actuator top rod assembly (305) is inserted into the actuator housing assembly (304) and can move up and down in the actuator housing assembly (304), and the other end is connected to the connecting plate (204); the explosion mechanism (302), the actuator housing assembly (304) and the telescopic outer sleeve (307) are connected through the gas pipeline (303) to form a gas channel. One way of the gas is transmitted to the explosive bolt (309) through the telescopic outer sleeve (307) and the telescopic inner sleeve (308) to disconnect it after it works; the other way of the gas is transmitted to the actuator housing assembly (304), pushing the actuator top rod assembly (305) to move upward, thereby pushing the connecting plate (204) to move upward, so that the seat installation angle of the ejection seat (1) becomes smaller until it returns to the initial ejection state.

4. The ejection seat angle adjustment device according to claim 1, characterized in that: It also includes a mounting angle adjustment switch (201) arranged on one side of the ejection seat (1) and a cable assembly (202) electrically connected thereto. The mounting angle adjustment switch (201) is connected to an electric mechanism (203) via the cable assembly (202). The electric mechanism (203) operates to extend and retract its lead screw.

5. The ejection seat angle adjustment device according to claim 4, characterized in that: The electric mechanism (203) has a self-locking function.

6. The ejection seat angle adjustment device according to claim 2, characterized in that: The forced recovery mechanism (3) further comprises a forced recovery pull ring (301), a pull pin is arranged on the explosion mechanism (302), and the forced recovery pull ring (301) is mounted on the pull pin.

7. The ejection seat angle adjustment device according to claim 2, characterized in that: The actuator housing assembly (304) and the telescopic outer sleeve (307) are respectively fixed on the rear wall plate of the cabin.

8. The ejection seat angle adjustment device according to claim 2, characterized in that: There are two sliders (205) and two slide grooves (206), which are symmetrically arranged on the rear bulkhead, and the movement strokes of the two sliders (205) are changed synchronously in the two slide grooves (206).

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