Pre-energy-storage magnetic connection boosting sliding block automatic separation device

Abstract

The invention relates to a pre-energy-storage magnetic connection boosting sliding block automatic separation device which is composed of a cabin body (1), a boosting sliding block assembly (2), a power-losing type electromagnet magnetic attraction device (3), a spring (4) and a fastener (6). The cabin body (1) is connected with the boosting sliding block (2), the side face of the cabin body (1) comprises a rectangular installation groove (5), the installation groove (5) is used for installing the boosting sliding block (2), and the power-losing type electromagnet magnetic attraction device installation interface is used for installing the power-losing type electromagnet magnetic attraction device (3); the boosting sliding block assembly (2) comprises a force bearing pin (7), a cup head screw (8), a sliding block (9), a threaded connection hole (10), a spring positioning groove (11) and a magnetic attraction installation face (12). The pre-energy-storage magnetic force connection boosting sliding block automatic separation device is simple and compact in structure, convenient to install and maintain and high in reliability and stability.

Description

Technical Field

[0001] The invention belongs to the field of mechanical automation, and in particular relates to a device for realizing automatic separation of a boosting slide block by combining a pre-energy storage structure with a magnetic connection. Background Art

[0002] The booster slider of the aircraft is an important component in the launch system. It plays a guiding role when the aircraft is launched, ensuring that the aircraft takes off in the predetermined direction and trajectory, and providing a stable sliding path for the aircraft. At the same time, during the storage and preparation stage of the aircraft, the booster slider provides support for the aircraft and bears its weight, which ensures the stability of the aircraft before launch. However, the booster slider has a certain negative impact on the aerodynamic characteristics and stealth performance of the aircraft. The presence of the booster slider may interfere with the airflow distribution on the surface of the aircraft during flight. This interference may cause the airflow to separate prematurely, increase resistance, and reduce lift, thereby affecting the aerodynamic efficiency of the aircraft. The booster slider increases the radar cross-section during flight, and the raised part will also affect the overall integration of the aircraft and reduce stealth performance. Summary of the invention

[0003] The purpose of the present invention is to reduce the influence of the booster slider on the flight performance of the aircraft and to realize the technology that the booster slider can be automatically separated after the aircraft completes the boost. The present invention provides a pre-energy stored magnetic connection booster slider automatic separation device.

[0004] The technical solution of the present invention is:

[0005] A booster slider automatic separation device with pre-storage magnetic connection, comprising a cabin 1, a booster slider assembly 2, a power-off type electromagnet magnetic attraction device 3, a spring 4 and a fastener 6;

[0006] The cabin body 1 is connected to the boost slider 2, and the side of the cabin body 1 includes a rectangular mounting groove 5 and a de-energized electromagnet magnetic attraction device mounting interface. The mounting groove 5 is used to install the boost slider 2, and the de-energized electromagnet magnetic attraction device mounting interface is located on the inner side of the cabin body 1 and is used to install the de-energized electromagnet magnetic attraction device 3.

[0007] The boost slider assembly 2 includes a bearing pin 7, a semicircular head screw 8, a slider 9, a threaded connection hole 10, a spring positioning groove 11 and a magnetic mounting surface 12. One end of the boost slider assembly 2 is the bearing pin 7, and the other end is the slider 9. The magnetic mounting surface 12 is between the bearing pin 7 and the slider 9. The mounting groove 5 is clearance-matched with the bearing pin 7. One end of the bearing pin 7 is the spring positioning groove 11. The center of the spring positioning groove 11 has a threaded connection hole 10. The semicircular head screw 8 passes through the round hook ring at the bottom of the spring 4 and is inserted into the threaded connection hole 10.

[0008] There are two de-energized electromagnet magnetic attraction devices 3, which are located on the surface of the cabin 1 and are connected and fixed to the cabin through an annular flange using eight fasteners 6. The de-energized electromagnet magnetic attraction devices 3 are magnetically connected to the magnetic attraction mounting surface 12 of the booster slider assembly 2.

[0009] It is characterized in that the spring 4 and the booster slider assembly 2 are connected and fixed by a semicircular head screw 8, and a thread fastener needs to be applied before connection.

[0010] The feature of the present invention is that the shape of the cabin 1 is determined according to the actual aerodynamic shape of the aircraft, and the de-energized electromagnet magnetic attraction device 3 and the adsorption surface should be arranged to follow the shape without any gap as much as possible.

[0011] It is characterized in that the booster slider assembly 2 is connected to the cabin 1 through the de-energized electromagnet magnetic attraction device 3, the magnetic attraction mounting surface 12 is completely fitted with the de-energized electromagnet magnetic attraction device 3, and the thickness of the magnetic attraction mounting surface 12 needs to match the magnetic field to ensure that the magnetic force reaches the indicated value of the de-energized electromagnet magnetic attraction device 3.

[0012] The feature of the invention is that, in order to reduce the influence of the de-energized electromagnet magnetic attraction device 3 on the surrounding structures and components, a magnetic isolation sheet is provided around the contact portion between the de-energized electromagnet magnetic attraction device 3 and the cabin 1 using soft magnetic material.

[0013] The feature of the invention is that aviation grease is applied between the mounting groove 5 and the load-bearing pin 7 to prevent rust and ensure that the booster slider assembly 2 can move freely along the axial direction of the load-bearing pin 7 .

[0014] The characteristic is that the cross section of the load-bearing pin 7 is rectangular, so as to ensure that the booster slider assembly 2 will not rotate along the axial direction of the load-bearing pin 7 after being subjected to force.

[0015] It is characterized in that the spring force calculation formula is F=kx, wherein: F represents the elastic force of the spring, in N; k represents the stiffness coefficient of the spring, in N / m; x represents the deformation of the spring, that is, the compression of the spring, in m; wherein the stiffness coefficient k=(Gd4) / (8nD3), wherein: G represents the shear elastic modulus, in MPa; d represents the spring wire diameter, in mm; n represents the effective number of turns; D represents the center diameter of the spring, in mm; the magnetic force is selected according to the marked value of the de-energized electromagnet magnetic attraction device 3, so that the magnetic force between the de-energized electromagnet magnetic attraction device 3 and the magnetic attraction mounting surface 12 is ≥ spring force × safety factor.

[0016] The advantages of the present invention are:

[0017] The present invention discloses a device for automatically separating a booster slider with a pre-energy storage magnetic connection, which has a simple and compact structure and is easy to install and maintain. The device can maintain the connection state of the booster slider in the absence of an external energy supply, and has reliability and stability. The power-off type electromagnet magnetic attraction device responds quickly, and the pre-energy storage mechanism can quickly release the stored energy to achieve instant separation of the slider, thereby ensuring the rapid response of the booster slider. At the same time, the structural connection has high precision and strong load-bearing capacity, which can meet the load-bearing and high-precision application requirements of the booster slider. This solution not only ensures the function of the booster slider to support and guide the aircraft to take off smoothly, but also ensures that the booster slider is smoothly detached after the aircraft is launched. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Pre-energy storage magnetic connection to promote the automatic separation device of the slider

[0019] Figure 2 Schematic diagram of boost slider

[0020] Among them, 1 partial cabin, 2 booster slider assembly, 3 power-off type electromagnet magnetic attraction device, 4 energy storage spring, 5 mounting slot, 6 fastener, 7 load-bearing pin, 8 semicircular head screw, 9 support shape, 10 threaded connection hole, 11 spring positioning slot, 12 magnetic attraction mounting surface DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] See attached Figure 1 and attached Figure 2 A pre-energy storage magnetic force connection booster slider automatic separation device is composed of a cabin 1, a booster slider assembly 2, a power-off type electromagnet magnetic attraction device 3 and fasteners. The cabin 1 only illustrates the connection part with the booster slider 2. The cabin 1 includes a mounting groove 5 and a mounting interface for a power-off type electromagnet magnetic attraction device. The booster slider assembly 2 includes a load-bearing pin 7, a slider 9, a threaded connection hole 10, a spring positioning groove 11 and a magnetic attraction mounting surface 12. There are two power-off type electromagnet magnetic attraction devices 3, which are connected and fixed to the cabin through an annular flange using eight fasteners 6. The spring 4 is connected and fixed to the booster slider assembly 2 by a semicircular head screw 8, and thread fastener needs to be applied before connection.

[0023] The shape of the cabin 1 is determined according to the actual aerodynamic shape of the aircraft. Since there should be as little gap as possible between the magnetic device and the adsorption surface, the magnetic surface should be as flat as possible, or a customized magnetic device can be provided. The cabin 1 includes a mounting slot 5 for connecting with the booster slider assembly 2. The booster slider assembly 2 needs to withstand a large overload. Reinforcement ribs should be arranged near the cabin 1 to ensure that the force transmission path is complete and the cabin load meets the design requirements. The cabin 1 should be partially thickened near the interface where the power-off type electromagnet magnetic device 3 is connected to meet the countersunk requirements of the fastener 6 and the load requirements.

[0024] The boost slider assembly 2 is made of steel plate through mechanical processing, and the mounting surface with the cabin is not painted. The steel material needs to be tempered to produce a martensitic phase transformation so that it has excellent electrical conductivity. Other metal materials that meet the requirements of strong rigidity and magnetic properties can also be selected. The boost slider assembly 2 is connected to the cabin through a power-off type electromagnet magnetic attraction device 3. The magnetic attraction mounting surface 12 should be completely fitted with the power-off type electromagnet magnetic attraction device 3, and the thickness needs to match the magnetic field to ensure that the magnetic force reaches the indicated value of the power-off type electromagnet magnetic attraction device 3. In order to reduce the impact of the magnetic attraction device on the surrounding structures and components, a magnetic isolation sheet can be made of soft magnetic material for local positions as needed. The slider 9 should meet the requirements of pneumatic and boost track. The external load borne by the boost slider assembly 2 is mainly transmitted by the bearing pin 7, which can bear the heading boost shear stress and the ability to withstand the vertical overload of the aircraft under transportation conditions. The bearing pin 7 can change the cross-sectional size and length according to the load-bearing requirements and reliability requirements.

[0025] The installation groove 5 and the bearing pin 7 have a precision clearance fit, wherein the fit precision can be adjusted according to the actual situation. To ensure that the booster slider assembly 2 can move freely along the axial direction, aviation grease should be applied between the installation groove 5 and the bearing pin 7, which can effectively prevent rust and prevent the booster slider from getting stuck when it pops out. The bearing pin 7 has a rectangular cross section to ensure that the booster slider assembly 2 will not rotate along the axial direction of the bearing pin 7 after being loaded.

[0026] The end face of the load-bearing pin 7 includes a spring positioning groove 11 for fixing the position of the energy storage spring 4 when it is compressed. The connection end of the energy storage spring 4 is provided with a circular torsion interface, which can be fixed to the end face of the load-bearing pin 7 through a semicircular head screw 8 and a threaded connection hole 10. According to the magnetic force of the de-energized electromagnet magnetic attraction device 3, the specific specifications and compression amount of the energy storage spring 4 are obtained by converting the formula.

[0027] The magnetic force retention period of energy storage springs and de-energized electromagnet magnetic attraction devices is usually several years. If long-term storage is required, they should be maintained and replaced regularly.

[0028] During the transportation or storage of the aircraft, the load-bearing pin 7 of the booster slider assembly 2 bears the vertical load. During the boosting process of the aircraft, the load-bearing pin 7 bears the heading overload. After the aircraft enters the cruising state, the central integrated control system can give the electrical control system an instruction to power the de-energized electromagnet magnetic attraction device 3, cancel its magnetic force, and the axial constraint between the cabin 1 and the booster slider assembly 2 along the load-bearing pin 7 disappears. The energy storage spring 4 works to eject the booster slider assembly 2 axially out of the cabin 1, and the booster slider assembly 2 can be automatically separated.

Claims

1. A booster slider automatic separation device with pre-storage magnetic connection, comprising a cabin (1), a booster slider assembly (2), a power-off type electromagnet magnetic attraction device (3), a spring (4) and a fastener (6); in, The cabin (1) is connected to the boosting slider (2), and the side of the cabin (1) includes a rectangular installation groove (5) and a power-off type electromagnet magnetic attraction device installation interface, the installation groove (5) is used to install the boosting slider (2), and the power-off type electromagnet magnetic attraction device installation interface is located on the inner side of the cabin (1) and is used to install the power-off type electromagnet magnetic attraction device (3); The boosting slider assembly (2) comprises a bearing pin (7), a semicircular head screw (8), a slider (9), a threaded connection hole (10), a spring positioning groove (11) and a magnetic mounting surface (12); one end of the boosting slider assembly (2) is the bearing pin (7), and the other end is the slider (9); a magnetic mounting surface (12) is provided between the bearing pin (7) and the slider (9); the mounting groove (5) and the bearing pin (7) are clearance-matched; one end of the bearing pin (7) is the spring positioning groove (11); a threaded connection hole (10) is provided at the center of the spring positioning groove (11); the semicircular head screw (8) passes through the round hook ring at the bottom of the spring (4) and is inserted into the threaded connection hole (10); There are two de-energized electromagnet magnetic attraction devices (3) located on the surface of the cabin (1) and connected and fixed to the cabin via an annular flange using (8) fasteners (6). The de-energized electromagnet magnetic attraction devices (3) are magnetically connected to the magnetic attraction mounting surface (12) of the booster slider assembly (2).

2. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 1, characterized in that: The spring (4) and the booster slide block assembly (2) are connected and fixed by means of a semicircular head screw (8), and a thread fastener needs to be applied before the connection.

3. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 2, characterized in that: The shape of the cabin (1) is determined according to the actual aerodynamic shape of the aircraft, because the de-energized electromagnet magnetic attraction device (3) and the adsorption surface should be arranged to follow the shape without any gap as much as possible.

4. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 3, characterized in that: The booster slider assembly (2) is connected to the cabin (1) via a de-energized electromagnet magnetic attraction device (3); the magnetic attraction mounting surface (12) is completely in contact with the de-energized electromagnet magnetic attraction device (3); and the thickness of the magnetic attraction mounting surface (12) needs to match the magnetic field to ensure that the magnetic force reaches the indicated value of the de-energized electromagnet magnetic attraction device (3).

5. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 4, characterized in that: In order to reduce the influence of the de-energized electromagnet magnetic attraction device (3) on surrounding structures and components, a magnetic isolation sheet is provided using soft magnetic material around the contact portion between the de-energized electromagnet magnetic attraction device (3) and the cabin body (1).

6. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 5, characterized in that: Aviation grease is applied between the mounting groove (5) and the load-bearing pin (7) to prevent rust and ensure that the booster slide block assembly (2) can move freely along the axial direction of the load-bearing pin (7).

7. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 6, characterized in that: The cross section of the load-bearing pin (7) is rectangular, which ensures that the booster slider assembly (2) will not rotate along the axial direction of the load-bearing pin (7) after being subjected to force.

8. The automatic separation device for the booster slider of the pre-energy storage magnetic connection according to claim 7, characterized in that: The spring force calculation formula is F=kx, wherein: F represents the spring force, in N; k represents the spring stiffness coefficient, in N / m; x represents the deformation of the spring, that is, the spring compression, in m; wherein the stiffness coefficient k=(Gd4) / (8nD3), wherein: G represents the shear elastic modulus, in MPa; d represents the spring wire diameter, in mm; n represents the effective number of turns; D represents the center diameter of the spring, in mm; the magnetic force is selected according to the marked value of the de-energized electromagnet magnetic attraction device (3), so that the magnetic force between the de-energized electromagnet magnetic attraction device (3) and the magnetic attraction mounting surface (12) is ≥ spring force×safety factor.

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