Electromagnetic braking automatic separation device

Abstract

The utility model discloses an electromagnetic braking automatic separating device, which comprises an I-shaped insulating sleeve, an electromagnetic coil is wound on the I-shaped insulating sleeve, and the tail end of the electromagnetic coil is connected with a waterproof cable which can be connected with an external power supply; a first through hole is formed in the middle of the I-shaped insulating sleeve; the first movable sliding rod is movably arranged in the first through hole and located in an inner cavity of the electromagnetic coil. The head end of the first movable sliding rod is connected with a telescopic contact for realizing connection or separation with the release mechanism; the iron core is fixedly arranged in the first through hole and located in an inner cavity of the electromagnetic coil, and the iron core is arranged at the bottom of the first movable sliding rod; a spring is clamped between the iron core and the first movable sliding rod, and when the waterproof cable is not powered on, the spring is in a normal telescopic state. According to the device, automatic separation is achieved through electromagnetic braking, and the device is simple in structure, convenient to operate and suitable for small-sized aircrafts; and the noise is low, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater separation of aircraft, in particular to an electromagnetic braking automatic separation device. Background Art

[0002] The underwater separation characteristics of the aircraft are the key to the success of the underwater launch or deployment of the aircraft. There are many ways to automatically separate. In the existing technology, there is a method of using explosion to break the weak link of the connection to achieve automatic separation, which has the problems of high noise and safety hazards; there is a method of using a buoyancy adjustment system to achieve automatic separation, which has the problem of complex system and is not suitable for small aircraft.

[0003] Currently, no effective solution has been proposed to address the problems that the existing technology uses explosions to achieve automatic separation, which results in high noise and safety hazards, and that the use of a buoyancy adjustment system to achieve automatic separation results in a complex system and is not suitable for use in small craft. Utility Model Content

[0004] The utility model provides an electromagnetic braking automatic separation device in the embodiment to solve the problems in the prior art of using explosion method to realize automatic separation, which results in high noise and potential safety hazards, and using buoyancy adjustment system to realize automatic separation, which results in a complex system and is not suitable for use in small vessels.

[0005] To achieve the above-mentioned purpose, the utility model provides an electromagnetic braking automatic separation device, which includes: an I-shaped insulating sleeve, an electromagnetic coil is wound on the I-shaped insulating sleeve, and the end of the electromagnetic coil is connected to a waterproof cable that can be connected to an external power supply; a first through hole is arranged in the middle of the I-shaped insulating sleeve; a first movable slide rod, which is movably arranged in the first through hole and located in the inner cavity of the electromagnetic coil; a retractable contact is connected to the head end of the first movable slide rod for realizing connection or separation with a release mechanism; an iron core, which is fixedly arranged in the first through hole and located in the inner cavity of the electromagnetic coil, and the iron core is arranged at the bottom of the first movable slide rod; a spring is clamped between the iron core and the first movable slide rod, and when the waterproof cable is not energized, the spring is in a normal retracted state.

[0006] Optionally, it also includes: an electromagnet shell; the electromagnet shell is arranged on the periphery of the I-shaped insulating sleeve and the electromagnetic coil; and a wire hole is arranged at the bottom of the electromagnet shell for passing the waterproof cable.

[0007] Optionally, it also includes: a bottom plate; the bottom plate is arranged at the bottom of the I-shaped insulating sleeve, and the bottom plate is fixedly connected to the bottom of the electromagnet shell; the iron core is fixedly arranged on the bottom plate.

[0008] Optionally, a protrusion is provided at the bottom of the iron core; and a groove is provided on the bottom plate for inserting and fixing the protrusion of the iron core.

[0009] Optionally, it also includes: a second movable slide rod; the second movable slide rod passes through the middle part of the iron core and the second through hole set in the middle part of the bottom plate, and the second movable slide rod is fixedly connected to the bottom thread of the first movable slide rod.

[0010] Optionally, the bottom surface of the first movable slide rod and the top surface of the iron core are both V-shaped slope surfaces and the two are compatible with each other; when the spring is in a normal telescopic state, the gap between the first movable slide rod and the V-shaped slope surface of the iron core is 1.5 mm.

[0011] Optionally, two springs are provided, which are respectively located at two ends between the iron core and the first movable sliding rod.

[0012] Optionally, the iron core is made of soft iron or steel.

[0013] Optionally, the I-shaped insulating sleeve is made of plexiglass or polyetheretherketone.

[0014] Optionally, the base plate is fixedly connected to the bottom of the electromagnet housing by countersunk screws.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides an electromagnetic brake automatic separation device, which includes: an I-shaped insulating sleeve, an electromagnetic coil is wound on the I-shaped insulating sleeve, and the end of the electromagnetic coil is connected to a waterproof cable that can be connected to an external power supply; a first through hole is arranged in the middle of the I-shaped insulating sleeve; a first movable slide bar is movably arranged in the first through hole and located in the inner cavity of the electromagnetic coil; a retractable contact is connected to the head end of the first movable slide bar for connection or separation with a release mechanism; an iron core is fixedly arranged in the first through hole and located in the inner cavity of the electromagnetic coil, and the iron core is arranged at the bottom of the first movable slide bar; a spring is clamped between the iron core and the first movable slide bar, and when the waterproof cable is not powered, the spring is in a normal retracted state. The device of the utility model adopts electromagnetic braking to achieve automatic separation, and its structure is simple, and its operation is convenient, and it is suitable for use in small aircraft; and it has low noise and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an electromagnetic brake automatic release device provided by an embodiment of the utility model;

[0018] Figure 2It is a structural schematic diagram of the connection method between the contacts and the release mechanism provided in the embodiment of the utility model.

[0019] Explanation of symbols:

[0020] I-shaped insulating sleeve-1, electromagnetic coil-2, waterproof cable-3, first through hole-4, first movable slide rod-5, iron core-6, spring-7, electromagnet housing-8, bottom plate-9, second movable slide rod-10, second through hole-11, countersunk screw-12, contact-13, release mechanism-14. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The underwater separation characteristics of the aircraft are the key to the success of the underwater launch or deployment of the aircraft. There are many ways to automatically separate. In the existing technology, there is a method of using explosion to break the weak link of the connection to achieve automatic separation, which has the problems of high noise and safety hazards; there is a method of using a buoyancy adjustment system to achieve automatic separation, which has the problem of complex system and is not suitable for small aircraft.

[0023] Therefore, the utility model provides an electromagnetic brake automatic separation device with low noise, high safety and applicable to small aircraft. Figure 1 It is a structural schematic diagram of an electromagnetic brake automatic release device provided by an embodiment of the utility model; Figure 2 1 is a schematic diagram of the structure of the connection between the contact 13 and the release mechanism 14 provided in the embodiment of the utility model; Figure 1 and Figure 2 As shown, the device comprises:

[0024] 1. An I-shaped insulating sleeve 1, on which an electromagnetic coil 2 is wound, and a waterproof cable 3 that can be connected to an external power source is connected to the end of the electromagnetic coil 2; a first through hole 4 is provided in the middle of the I-shaped insulating sleeve 1;

[0025] The I-shaped insulating sleeve 1 includes: a first horizontal plate, a second horizontal plate and a column; the first horizontal plate and the second horizontal plate are parallel, and the column is perpendicular to the first horizontal plate and the second horizontal plate; the electromagnetic coil 2 is wound around the column and located between the first horizontal plate and the second horizontal plate; the I-shaped insulating sleeve 1 is an integrated structure. The end of the electromagnetic coil 2 is connected to a waterproof cable 3, which is powered on after the waterproof cable 3 is connected to an external power source, and the electromagnetic coil 2 is powered on; when the waterproof cable 3 is not connected to the external power source, the electromagnetic coil 2 is powered off. A first through hole 4 is provided in the middle of the column.

[0026] Furthermore, the insulation and pressure resistance of the I-shaped insulating sleeve 1 are also critical. If the electromagnetic brake automatic separation device is operated at a water depth of more than 200m, industrial organic glass plates and other such materials can be selected. If the electromagnetic brake automatic separation device works at a water depth of less than 200m or even 1000m, polyetheretherketone (peek material) can be selected, which has better pressure resistance, high temperature resistance and insulation than industrial organic glass plates. Such materials have high mechanical strength and are not easily deformed due to environmental factors.

[0027] 2. A first movable slide bar 5, which is movably disposed in the first through hole 4 and is located in the inner cavity of the electromagnetic coil 2; a retractable contact 13 is connected to the head end of the first movable slide bar 5, which is used to achieve connection or separation with the release mechanism 14;

[0028] The first movable slide rod 5 is movably disposed in the first through hole 4 and is located in the inner cavity of the electromagnetic coil 2; the head of the first movable slide rod 5 passes through the first through hole 4 and is located outside the first through hole 4; the bottom of the first movable slide rod 5 is located in the first through hole 4, and the bottom surface of the first movable slide rod 5 is a V-shaped slope surface.

[0029] The head end of the first movable slide rod 5 is connected with a retractable contact 13, which is a cylindrical body. Figure 2 Only a part of the release mechanism 14, namely, two arc-shaped bodies, is shown; when the waterproof cable 3 is not powered, the contact 13 is connected to the release mechanism 14 and is in point contact. When the waterproof cable 3 is powered, the contact 13 contracts and separates from the release mechanism 14. The use of point contact can increase the flexibility and reliability of automatic separation.

[0030] 3. An iron core 6 is fixedly disposed in the first through hole 4 and located in the inner cavity of the electromagnetic coil 2. The iron core 6 is disposed at the bottom of the first movable slide bar 5. A spring 7 is clamped between the iron core 6 and the first movable slide bar 5. When the waterproof cable 3 is not powered, the spring 7 is in a normal telescopic state.

[0031] The iron core 6 is fixedly arranged in the first through hole 4 and located in the inner cavity of the electromagnetic coil 2. The iron core 6 is arranged at the bottom of the first movable slide bar 5. A spring 7 is clamped between the iron core 6 and the first movable slide bar 5. Specifically, two springs 7 are provided, which are respectively located at the two ends between the iron core 6 and the first movable slide bar 5. The middle bottom of the iron core 6 is a cylindrical structure, and the top surface of the iron core 6 is a V-shaped slope surface. The top surface of the iron core 6 is adapted to the bottom surface of the first movable slide bar 5. When the waterproof cable 3 is not powered, the spring 7 is in a normal telescopic state, and the gap between the first movable slide bar 5 and the V-shaped slope surface of the iron core 6 is 1.5 mm.

[0032] The electromagnetic braking automatic separation device also includes: an electromagnet shell 8; the electromagnet shell 8 is arranged on the periphery of the I-shaped insulating sleeve 1 and the electromagnetic coil 2; specifically, the electromagnet shell 8 is a "J"-shaped structure, covering the I-shaped insulating sleeve 1 and the electromagnetic coil 2, and a third through hole is arranged in the middle of the top of the electromagnet shell 8, and the third through hole is connected to the first through hole 4 and has the same diameter; the head end of the first movable slide rod 5 passes through the third through hole.

[0033] The electromagnet housing 8 is waterproof, thereby enabling underwater operation.

[0034] The electromagnet brake automatic release device also includes: a bottom plate 9; the bottom plate 9 is arranged at the bottom of the I-shaped insulating sleeve 1, and the bottom plate 9 is fixedly connected to the bottom of the electromagnet shell 8; specifically, the bottom plate 9 is fixedly connected to the bottom of the electromagnet shell 8 by countersunk screws 12.

[0035] The iron core 6 is fixedly arranged on the bottom plate 9; specifically, a protrusion is arranged at the bottom of the iron core; and a groove is arranged on the bottom plate for inserting and fixing the protrusion of the iron core.

[0036] The electromagnet brake automatic release device also includes: a second movable slide rod 10; the second movable slide rod 10 passes through the middle part of the iron core 6 and the second through hole 11 set in the middle part of the bottom plate 9, and the second movable slide rod 10 is fixedly connected to the bottom thread of the first movable slide rod 5.

[0037] Further, the diameter of the second through hole 11 is smaller than the diameter of the iron core 6, so that the iron core 6 is prevented from sliding out of the second through hole 11, and further, the protrusion of the iron core 6 is inserted and fixed in the groove of the bottom plate 9. The diameter of the second through hole 11 is larger than the outer diameter of the second movable slide bar 10, so that the second movable slide bar 10 can move up and down in the second through hole 11. It should be noted that the second movable slide bar 10 passes through the middle of the iron core 6 and can move up and down in the iron core 6.

[0038] The specific working process of the electromagnetic brake automatic release device is described as follows:

[0039] After the waterproof cable 3 is connected to the power supply, the electromagnetic coil 2 is energized, the iron core 6 is magnetized and generates magnetic force, which makes the slope surface of the first movable slide bar 5 contact the slope surface of the iron core 6, that is, the first movable slide bar 5 moves downward, and the spring 7 is in a compressed state. Since the first movable slide bar 5 is fixedly connected to the second movable slide bar 10, the second movable slide bar 10 will also move downward, but the iron core 6 will not move, and the contact 13 connected to the head end of the first movable slide bar 5 will achieve a retraction action, completing the automatic separation action with the release mechanism 14. When the waterproof cable 3 is not connected to the power supply, the electromagnetic coil 2 is powered off, the iron core 6 loses its magnetism, the spring 7 in the compressed state rebounds, the slope surface of the first movable slide bar 5 is separated from the slope surface of the iron core 6, the first movable slide bar 5 moves up, and the contact 13 connected thereto is reset to achieve connection with the release mechanism 14. It should be noted that the iron core 6 needs to be made of a material that is easy to magnetize and easy to lose its magnetism, such as soft iron or steel such as an electromagnetic pure iron rod.

[0040] The magnetism of the electromagnetic coil 2 can be controlled by connecting the waterproof cable 3 to the power supply. The magnetism is controlled by the connected current, voltage and the number of turns of the electromagnetic coil 2.

[0041] The specific amount of magnetism generated by the electromagnetic coil 2 when it is energized can realize the reliable automatic separation of the contact 13 connected to the first movable slide bar 5 and the release mechanism 14. The following calculation formula is provided as an example to calculate the electromagnetic attraction:

[0042] Given: working voltage: U = 24V, electromagnetic coil 2 resistance R = 165 ± 5Ω, number of turns W = 4750 ± 5, the following can be calculated based on the known conditions:

[0043] Current: I=U / R=24 / 165=0.145

[0044] Ampere-turns: IW = 0.145 × 4750 = 690.9. The larger the ampere-turns, the stronger the magnetic field generated.

[0045] Electromagnetic suction:

[0046]

[0047] Where, Φ is the magnetic flux through the polarization surface of the core 6, S is the polarization area of ​​the core 6 cm 2 , δ is the gap between the first movable slide bar 5 and the iron core 6 when not attracted, i.e. 1.5 mm, α is the correction coefficient, generally between 3 and 4, and the middle value α=4 is taken here, IW is the ampere-turns of the electromagnetic coil 2, G δis the permeability of the working magnetic flux, R0 is the travel value of the first movable slide bar 5 to the core 6, i.e., the moving distance in cm, and μ0 is the permeability of the air, which is 0.4π×10 -8 H / cm, r is the radius of the polarization plane of the core 6 in cm.

[0048] When the electromagnetic coil 2 is powered on, the electromagnetic attraction is greater than the reaction force of the spring 7, and the first movable slide bar 5 moves toward the position of the iron core 6. When the electromagnetic coil 2 is powered off, the electromagnetic attraction disappears, the reaction force of the spring 7 is greater than the electromagnetic attraction, and the first movable slide bar 5 moves away from the iron core 6 under the reaction force of the spring 7, and the contact 13 is reset.

[0049] In the present application, the contact between the first movable slide rod 5 and the iron core 6 adopts a slope surface contact, which can reduce friction when the suction force is constant, thereby ensuring the reliability of the movement of the first movable slide rod 5 when the iron core 6 generates suction force; the contact 13 connected to the first movable slide rod 5 and the release mechanism 14 adopt a point contact method, which facilitates the contraction of the first contact 13 after the electromagnetic coil 2 is energized and can be smoothly separated from the release mechanism 14, thereby reducing friction.

[0050] Beneficial effects of the utility model:

[0051] The utility model provides an electromagnetic brake automatic separation device, which includes: an I-shaped insulating sleeve 1, an electromagnetic coil 2 is wound on the I-shaped insulating sleeve 1, and the end of the electromagnetic coil 2 is connected to a waterproof cable 3 that can be connected to an external power supply; a first through hole 4 is arranged in the middle of the I-shaped insulating sleeve 1; a first movable slide bar 5 is movably arranged in the first through hole 4 and located in the inner cavity of the electromagnetic coil 2; a retractable contact 13 is connected to the head end of the first movable slide bar 5 for realizing connection or separation with a release mechanism 14; an iron core 6 is fixedly arranged in the first through hole 4 and located in the inner cavity of the electromagnetic coil 2, and the iron core 6 is arranged at the bottom of the first movable slide bar 5; a spring 7 is clamped between the iron core 6 and the first movable slide bar 5, and when the waterproof cable 3 is not powered, the spring 7 is in a normal retractable state. The device of the utility model adopts electromagnetic braking to realize automatic separation, has a simple structure, is easy to operate, is suitable for use in small aircraft, and has low noise and high safety.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An electromagnetic brake automatic release device, characterized in that: include: An I-shaped insulating sleeve, on which an electromagnetic coil is wound, and the end of the electromagnetic coil is connected to a waterproof cable that can be connected to an external power supply; a first through hole is provided in the middle of the I-shaped insulating sleeve; A first movable slide bar is movably disposed in the first through hole and located in the inner cavity of the electromagnetic coil; a retractable contact is connected to the head end of the first movable slide bar for achieving connection or separation with the release mechanism; An iron core is fixedly disposed in the first through hole and located in the inner cavity of the electromagnetic coil, and the iron core is disposed at the bottom of the first movable slide rod; a spring is clamped between the iron core and the first movable slide rod, and when the waterproof cable is not powered, the spring is in a normal telescopic state.

2. The device according to claim 1, characterized in that Also includes: Electromagnet housing; The electromagnet housing is arranged on the periphery of the I-shaped insulating sleeve and the electromagnetic coil; A wire hole is arranged at the bottom of the electromagnet housing for passing the waterproof cable.

3. The device according to claim 2, characterized in that Also includes: Base plate; The bottom plate is arranged at the bottom of the I-shaped insulating sleeve, and the bottom plate is fixedly connected to the bottom of the electromagnet housing; The iron core is fixedly arranged on the bottom plate.

4. The device according to claim 3, characterized in that: A protrusion is arranged at the bottom of the iron core; and a groove is arranged on the bottom plate for inserting and fixing the protrusion of the iron core.

5. The device according to claim 4, characterized in that Also includes: a second movable slide bar; The second movable sliding rod passes through the middle of the iron core and the second through hole arranged in the middle of the bottom plate, and the second movable sliding rod is fixedly connected to the bottom of the first movable sliding rod by means of threads.

6. The device according to claim 1, characterized in that: The bottom surface of the first movable sliding rod and the top surface of the iron core are both V-shaped slope surfaces and the two are adapted to each other; When the spring is in a normal telescopic state, the gap between the first movable sliding rod and the V-shaped slope surface of the iron core is 1.5 mm.

7. The device according to claim 1, characterized in that: The springs are provided with two springs, which are respectively located at two ends between the iron core and the first movable sliding rod.

8. The device according to claim 1, characterized in that: The iron core is made of soft iron or steel.

9. The device according to claim 1, characterized in that: The I-shaped insulating sleeve is made of organic glass or polyetheretherketone.

10. The device according to claim 3, characterized in that: The bottom plate is fixedly connected to the bottom of the electromagnet housing by countersunk screws.

Images