Main stage and boosting stage separation mechanism

Abstract

The utility model provides a main stage and boosting stage separation mechanism. The main stage and boosting stage separation mechanism comprises a shell, an installation cavity with the circle center is machined in the center of one end of the shell, an annular groove is formed in the side wall of the installation cavity, a plurality of explosive bolts are evenly installed in the annular groove, the screw rod ends of the explosive bolts extend out of through holes formed in the outer end of the annular groove, and the two opposite sides of the outer end of the annular groove are further connected with an electric connector plug through tension springs. And the electric connector plug is inserted into an electric connector socket fixed on the primary cabin section. The explosion bolt is assembled and limited through the ring groove, the assembly process is simple, the number of parts is small, the reliability of the separator is guaranteed, and the plug of the electric connector is connected to the shell through the tension spring; and after the main stage is separated from the boosting stage, the electric connector is flexibly connected with the main stage and is flexibly separated under the action of the tension spring, so that the flight attitude of the main stage is not influenced.

Description

Technical Field

[0001] The utility model relates to a main stage and booster stage separation mechanism. Background Art

[0002] Interstage separation is one of the key technologies of missiles. Its safety and stability are related to the subsequent flight of the main stage missile and directly affect the success or failure of the mission. The separation of the first and second stages of the missile is carried out under high Mach flight conditions. The separation process will be affected by various interference factors and product manufacturing deviations. These interference factors and deviations will cause large disturbances when the missile is separated. There are many types of interference factors and deviations in separation, including wind interference, engine residual thrust eccentricity and deflection, missile structure deviation, interstage aerodynamic interference during separation, asynchronism of the separation mechanism, atmospheric parameters, etc., which makes the control problem of interstage separation of the missile body very prominent. Ensuring that the separation process is controllable and the main stage missile is stable after separation is a key technology to ensure the flight mission. For example, the separation mechanism and aircraft disclosed in the publication number CN112762777A drive the separation cable to rotate relative to each other in the plane where the socket axis is located through the separation connecting rod to achieve the separation of the plug and the socket. However, due to the time difference in the rotation of the connecting rod, the connection parts of the plug and the socket cannot be separated at the same time, which will affect the flight state of the rocket after separation. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a main stage and booster stage separation mechanism.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides a main stage and booster stage separation mechanism, comprising a shell; a mounting cavity with a circular center is processed at the center of one end of the shell, a ring groove is provided on the side wall of the mounting cavity, a plurality of explosive bolts are evenly installed in the ring groove, the screw ends of the explosive bolts extend out of the through holes provided on the outer ends of the ring groove, the opposite sides of the outer ends of the ring groove are also connected to an electric connector plug through tension springs, and the electric connector plug is plugged into an electric connector socket fixed on the main stage compartment.

[0006] A shaft sleeve is also arranged between the explosive bolt and the through hole.

[0007] The portion of the explosive bolt placed in the annular groove is in an inverted cone shape.

[0008] A square groove is processed on the outer end surface of the ring groove, and a threaded hole is provided on the side wall of the square groove. A pull ring bolt is installed in the threaded hole. The pull ring bolt is connected to one end of the tension spring, and the other end of the tension spring is connected to the pull ring. The pull ring is fixed to the end of the electrical connector plug.

[0009] The end of the electrical connector plug is placed in the square slot.

[0010] The beneficial effects of the utility model are as follows: the explosive bolts are assembled and limited by the ring groove, the assembly process is simple, and the number of parts is small, thereby ensuring the reliability of the separator; the plug of the electrical connector is connected to the outer shell by a tension spring; after the main stage is separated from the booster stage, the electrical connector is flexibly connected to the main stage and flexibly separated under the action of the tension spring, without affecting the flight posture of the main stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the electrical connector of the utility model;

[0013] Figure 3 It is a schematic diagram of the connection structure between the electrical connector and the housing of the utility model;

[0014] Figure 4 This is a schematic diagram of the explosive bolt structure of the utility model;

[0015] Figure 5 It is a schematic diagram of the structure of the utility model in a separated state;

[0016] In the figure: 1-housing, 2-sleeve, 3-explosive bolt, 4-electrical connector plug, 5-detonating device, 6-electrical connector socket, 7-tension spring, 8-ring groove, 9-installation cavity, 10-pull ring, 11-pull ring bolt. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0018] A main stage and booster stage separation mechanism comprises a shell 1; a mounting cavity 9 with a circular center is processed at the center of one end of the shell 1, and an annular groove 8 is provided on the side wall of the mounting cavity 9. A plurality of explosive bolts 3 are evenly installed in the annular groove 8, and the screw ends of the explosive bolts 3 extend out of the through holes provided on the outer ends of the annular groove 8. The opposite sides of the outer ends of the annular groove 8 are also connected to an electrical connector plug 4 through tension springs 7, and the electrical connector plug 4 is plugged into an electrical connector socket 6 fixed on the main stage compartment.

[0019] A shaft sleeve 2 is also provided between the explosive bolt 3 and the through hole.

[0020] The portion of the explosive bolt 3 placed in the annular groove 8 is in an inverted cone shape.

[0021] A square groove is processed on the outer end face of the ring groove 8, and a threaded hole is provided on the side wall of the square groove. A pull ring bolt 11 is installed in the threaded hole. The pull ring bolt 11 is connected to one end of the tension spring 7, and the other end of the tension spring 7 is connected to the pull ring 10. The pull ring 10 is fixed to the end of the electrical connector plug 4.

[0022] The end of the electrical connector plug 4 is placed in the square groove.

[0023] The main stage and booster stage are connected and unlocked by explosive bolts. At the same time, the explosive bolts only bear axial tension and bear shear force through the shaft sleeve. The rear end of the shaft sleeve is conical. The electrical connector is fixed on the main stage compartment by screws and connected to the booster compartment by tension springs. When the explosive bolts are detonated and separated, the main stage and booster stage are separated under the action of aerodynamic force. At the same time, the tension spring pulls the separation plug out of the separation socket to complete the separation of the main stage and booster stage.

Claims

1. A main stage and booster stage separation mechanism, comprising a housing (1), characterized in that: A mounting cavity (9) with a circular center is processed at the center of one end of the housing (1), and a ring groove (8) is provided on the side wall of the mounting cavity (9). A plurality of explosive bolts (3) are evenly installed in the ring groove (8), and the screw ends of the explosive bolts (3) extend out of the through holes provided on the outer ends of the ring groove (8). The opposite sides of the outer ends of the ring groove (8) are also connected to the electric connector plug (4) through tension springs (7), and the electric connector plug (4) is plugged into the electric connector socket (6) fixed on the main stage compartment.

2. The main stage and booster stage separation mechanism according to claim 1, characterized in that: A shaft sleeve (2) is also provided between the explosive bolt (3) and the through hole.

3. The main stage and booster stage separation mechanism according to claim 2, characterized in that: The portion of the explosive bolt (3) placed in the annular groove (8) is in an inverted cone shape.

4. The main stage and booster stage separation mechanism according to claim 1, characterized in that: A square groove is machined on the outer end surface of the annular groove (8), a threaded hole is provided on the side wall of the square groove, a pull ring bolt (11) is installed in the threaded hole, the pull ring bolt (11) is connected to one end of the tension spring (7), the other end of the tension spring (7) is connected to the pull ring (10), and the pull ring (10) is fixed to the end of the electrical connector plug (4).

5. The main stage and booster stage separation mechanism according to claim 4, characterized in that: The end of the electrical connector plug (4) is placed in the square groove.

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