Unfolding locking mechanism suitable for steering engine folding wing

Abstract

The unfolding and locking mechanism suitable for the steering engine folding wing comprises a firer cylinder arranged at the end of a steering engine, the top of the firer cylinder is an open firer cavity, the middle of the firer cylinder is a connecting rod cavity, and the bottom of the firer cylinder is a sliding cavity; the combustion chamber is arranged in the firer cavity and is connected to a sliding sleeve in the sliding cavity through a connecting rod at the bottom; a plurality of through holes are formed in the bottom face of the combustion chamber and right face the pressure relief cavities in the bottom of the fire work cavity respectively. A plurality of hook grooves are formed in the side face of the sliding cavity, and hooks arranged in the hook grooves are arranged on the outer side wall of the sliding sleeve. And the hook is used for supporting the rear edge of the control surface in the hook groove, so that the control surface is overturned and unfolded based on a rotating shaft fixed with the steering engine. The locking device is simple in structure, good in synchronism and reliable in locking, is particularly suitable for guided ammunition folding wings which are large in impact magnitude, short in unfolding time and high in synchronism requirement, and has very high practicability and wide applicability.

Description

Technical Field

[0001] The invention relates to an unfolding locking mechanism, in particular to an unfolding locking mechanism suitable for a folding wing of a steering gear, and belongs to the technical field of folding wings of guided ammunition. Background Art

[0002] The rudder is the executive component of the projectile body attitude control. In order to miniaturize rockets, missiles, and guided artillery shells, facilitate transportation and storage, and not affect the forwarding and storage devices of the original standard ammunition, guided ammunition widely uses folding rudder wings.

[0003] At present, the folding wing deployment mechanism of domestic guided ammunition mostly adopts four-way independent propulsion of pyrotechnics, that is, the pyrotechnics push four push rods, which push four rudders respectively. This method has complex structural design, poor synchronization of four-way wing deployment, large impact when the rudders are deployed, and there is a risk that the rudders are not securely locked when deployed and the four-way push rods cannot fully function, resulting in failure of rudder deployment or inadequate deployment, thereby causing instability of the missile body's flight attitude.

[0004] Existing folding wings are mostly folded in an independent "locking-unlocking" device, which has a complex structure and increased costs. There is a risk of accidental deployment or failure to deploy during launch, and the reliability of the folding wing deployment mechanism is low. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, an object of the present invention is to provide an unfolding and locking mechanism suitable for a folding wing of a steering gear.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: The unfolding locking mechanism for the folding wings of the steering gear comprises a pyrotechnic cylinder arranged at the end of the steering gear, wherein the top of the pyrotechnic cylinder is an open pyrotechnic cavity, the middle is a connecting rod cavity, and the bottom is a sliding cavity; The combustion chamber is placed in the pyrotechnic chamber and connected to the sliding sleeve placed in the sliding chamber through a connecting rod at the bottom; The bottom surface of the combustion chamber is provided with a plurality of through holes, and the through holes are respectively opposite to the pressure relief chamber at the bottom of the pyrotechnic chamber; The side of the sliding cavity is provided with a plurality of hook grooves, and the outer side wall of the sliding sleeve is provided with hooks placed in the hook grooves; The hook is used to support the rear edge of the rudder surface placed in the hook groove, so that the rudder surface can be turned over and unfolded based on the rotating shaft fixed to the steering gear.

[0007] The cylinder wall of the pyrotechnic cylinder is provided with fixing screws which are used to fix the combustion chamber and can be sheared off.

[0008] The above-mentioned deployment locking mechanism comprises a steering gear output shaft arranged on one side of the steering surface, the outer side surface of the steering gear output shaft is arc-shaped, and a concave first positioning groove is provided at the top of the arc; The rudder surface is provided with a pin groove and a built-in limit pin; The steering gear output shaft is provided with a fixing pin; The two ends of the tension spring are respectively connected to a fixing pin and a limiting pin. When the limiting pin is placed in the first positioning groove, the rear edge of the locking rudder surface is placed in the hook groove.

[0009] Furthermore, a second concave positioning groove is provided at the arc-shaped bottom end of the outer side surface of the steering gear output shaft; when the limit pin is placed in the second positioning groove, the locking rudder surface is in an unfolded state.

[0010] The hook groove and the rudder surface are a pair and are symmetrically arranged on opposite sides of the steering gear.

[0011] The hook grooves and rudder surfaces are n (n≥2) pairs, which are symmetrically arranged on opposite sides of the steering gear; and the rudder surfaces are arranged at equal angles along the circumference of the steering gear.

[0012] The present invention is beneficial in that: The invention discloses an unfolding locking mechanism suitable for the folding wings of a steering gear. When four rudder surfaces are in a folded state, a limit pin is placed in a first positioning groove through a tension spring to lock the folded state of the rudder surface; when the pyrotechnic product is ignited, the gas pushes the combustion chamber to rise and the linkage hook supports the rudder surface, so that the limit pin overcomes the tension of the tension spring, disengages from the first positioning groove, moves along the arc surface into the second positioning groove, and then locks the unfolded state of the rudder surface under the tension of the tension spring.

[0013] The deployment locking mechanism for the servo folding wing of the present invention has a simple structure, good synchronization and reliable locking, and is particularly suitable for the folding wings of guided ammunition with a large impact magnitude, a short deployment time and high synchronization requirements, and has strong practicality and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the folded state of the unfolding locking mechanism.

[0015] Figure 2 It is a structural schematic diagram of the unfolded state of the unfolding locking mechanism.

[0016] Figure 3 This is a schematic diagram of the structure of the pyrotechnic cylinder.

[0017] The meanings of the marks in the accompanying drawings are as follows: 1. pyrotechnic cylinder, 2. pyrotechnic chamber, 3. combustion chamber, 4. connecting rod, 5. rudder surface, 6. limit pin, 7. servo output shaft, 8. tension spring, 9. fixing pin, 10. through hole, 11. pressure relief chamber, 12. hook groove, 13. hook, 14. sliding sleeve, 15. fixing screw. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The invention discloses an unfolding and locking mechanism applicable to the folding wings of a steering gear, comprising a pyrotechnic cylinder 1 arranged at the end of the steering gear.

[0020] In the longitudinal direction, the pyrotechnic cylinder 1 is divided into a pyrotechnic chamber 2, a connecting rod 4 chamber and a sliding chamber in sequence; wherein the combustion chamber 3 is placed in the pyrotechnic chamber 2, the connecting rod 4 is placed in the connecting rod 4 chamber, the sliding sleeve 14 is placed in the sliding chamber, and the two ends of the connecting rod 4 are respectively fixedly connected to the combustion chamber 3 and the sliding sleeve 14. That is, the movable combustion chamber 3 can slide in the longitudinal direction in the sliding chamber through the connecting rod 4 and the sliding sleeve 14.

[0021] The combustion chamber 3 is used to place the pyrotechnics, and a plurality of through holes 10 are provided at the bottom of the combustion chamber 3, which lead to the pressure relief chamber 11 at the bottom of the combustion chamber 3, and the bottom opening of the pressure relief chamber 11 faces the bottom of the pyrotechnic chamber 2. That is, when the pyrotechnics are ignited, the gas pushes the combustion chamber 3 to move upward, and the sliding sleeve 14 moves upward through the connecting rod 4.

[0022] Along the longitudinal direction, a plurality of hook grooves 12 are provided on the side of the sliding cavity, and a hook 13 placed in the hook groove 12 is provided on the outer side wall of the sliding sleeve 14 .

[0023] The servo is provided with a plurality of rudder surfaces 5 corresponding to the hook grooves 12 through a fixed rotating shaft, and the rear edge of the rudder surface 5 can be placed in the hook groove 12, and can be supported upward along the hook groove 12 by the hook 13, and then the rudder surface 5 can be flipped and unfolded based on the rotation of the rotating shaft.

[0024] On one side of the rudder surface 5, the servo is provided with a servo output shaft 7 parallel to the rudder surface 5. The outer side surface (top surface) of the servo output shaft 7 is arc-shaped, and the first and second positioning grooves are respectively provided at both ends of the arc.

[0025] The steering gear output shaft 7 is provided with a fixing pin 9, and the rudder surface 5 is provided with a pin groove with a built-in limit pin 6; the limit pin 6 and the fixing pin 9 are connected by a tension spring 8, so that the limit pin 6 is attached to the arc surface of the steering gear output shaft 7.

[0026] When the limiting pin 6 is placed in the first positioning groove, the rear edge of the locking rudder surface 5 is placed in the hook groove 12 .

[0027] When the limiting pin 6 is placed in the second positioning groove, the locking control surface 5 is in an unfolded state.

[0028] Preferably, The wall of the pyrotechnic cylinder 1 is provided with a fixing screw 15 which is used to fix the combustion chamber 3 and can be sheared off.

[0029] When the hook groove 12 and the steering surface 5 form a pair, they are symmetrically arranged on opposite sides of the steering gear.

[0030] When there are n (n≥2) pairs of hook grooves 12 and rudder surfaces 5, they are symmetrically arranged on opposite sides of the steering gear, and the rudder surfaces 5 are arranged at equal angles along the circumference of the steering gear. Preferably, n=2, that is, there are 4 rudder surfaces 5.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. The unfolding and locking mechanism for the folding wings of the steering gear is characterized by: It includes a pyrotechnic cylinder arranged at the end of the steering gear, wherein the top of the pyrotechnic cylinder is an open pyrotechnic cavity, the middle is a connecting rod cavity, and the bottom is a sliding cavity; The combustion chamber is placed in the pyrotechnic chamber and connected to the sliding sleeve placed in the sliding chamber through a connecting rod at the bottom; The bottom surface of the combustion chamber is provided with a plurality of through holes, and the through holes are respectively opposite to the pressure relief chamber at the bottom of the pyrotechnic chamber; The side of the sliding cavity is provided with a plurality of hook grooves, and the outer side wall of the sliding sleeve is provided with hooks placed in the hook grooves; The hook is used to support the rear edge of the rudder surface placed in the hook groove, so that the rudder surface can be turned over and unfolded based on the rotating shaft fixed to the steering gear.

2. The deployment locking mechanism according to claim 1, characterized in that: The cylinder wall of the pyrotechnic cylinder is provided with fixing screws which are used for fixing the combustion chamber and can be sheared off.

3. The deployment locking mechanism according to claim 1, characterized in that: It includes a steering gear output shaft arranged on one side of the steering surface, the outer side surface of the steering gear output shaft is arc-shaped, and a concave first positioning groove is arranged at the top of the arc; The rudder surface is provided with a pin groove and a built-in limit pin; The steering gear output shaft is provided with a fixing pin; The two ends of the tension spring are respectively connected to a fixing pin and a limiting pin. When the limiting pin is placed in the first positioning groove, the rear edge of the locking rudder surface is placed in the hook groove.

4. The deployment locking mechanism according to claim 3, characterized in that: The arc-shaped bottom end of the outer side surface of the steering gear output shaft is provided with a concave second positioning groove; when the limit pin is placed in the second positioning groove, the locking rudder surface is in an unfolded state.

5. The unfolding and locking mechanism according to any one of claims 1 to 4, characterized in that: The hook groove and the rudder surface form a pair and are symmetrically arranged on opposite sides of the steering gear.

6. The unfolding and locking mechanism according to any one of claims 1 to 4, characterized in that: The hook grooves and rudder surfaces are n (n≥2) pairs, which are symmetrically arranged on opposite sides of the steering gear; and the rudder surfaces are arranged at equal angles along the circumference of the steering gear.

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