KR20120072475A - Separating device and system using shape memory steel material sylinder and wire, method for setting the device, separating method using the device and reassemble method using the device - Google Patents

Abstract

PURPOSE: A low-shock and non-explosive release device using a shape memory alloy cylinder and a shape memory alloy wire, an installation method, a release system, a preparation method, a release method, and a re-assembling method thereof are provided to prevent pollution by reducing shock using a non-explosive method. CONSTITUTION: A low-shock and non-explosive release device comprises a shape memory alloy cylinder and a shape memory alloy wire(520). The shape memory alloy cylinder is composed of a shape memory alloy extended in an axial direction. The shape memory alloy wire is installed on a wire guide, and the ends of the shape memory alloy wire are fixed to outer holes. When the shape memory alloy wire is contracted, the shape memory alloy wire moves a trigger block(400) upward, and a center bolt(600) is stretched.

Description

Low-impact non-explosive separation device using shape memory alloy cylinder and shape memory alloy wire, installation method of separation device, separation system, preparation method, separation method and reassembly method {Separating Device and System using Shape Memory Steel Material Sylinder and Wire, Method for setting the Device, Separating Method using the Device and Reassemble Method using the Device}

A low impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire, a method of installing the separation device, a separation system, a separation method and a reassembly method. More specifically, the present invention can support a large external load by using a retainer divided into a device for separating an external structure in the military and aerospace fields, and can be quickly separated by using a shape memory alloy wire and a spring. It relates to a low impact non-explosive separation device that can implement a shock reduction.

Guided missiles, projectiles, and satellites in the military and aerospace sectors are indispensable for the use of devices capable of successfully releasing, unscrewing, and disengaging certain external structures at once. Such a device is commonly referred to as a release device. These separation devices should serve to safely support the structure from external static, impact and acoustic loads during the initial mission, while reliably releasing the constraints on the separation and deployment requirements of the structure. For example, in the case of projectiles, a release device is used for stage separation. Satellites use a separate device, a detachable device, to separate satellites from launch vehicles, to deploy solar panels or antennas, and to open and close various payload doors.

In general, a detachable device, which is a detachable device, has been commonly used to successfully perform separation or deployment by cutting a tension bar by explosives. However, this technique inevitably requires high handling safety and causes high shock during explosion and contamination such as gas upon ignition. And small debris that can occur during an explosion carries the risk of another collision. When the separation or deployment of substructures, such as projectiles or satellites, is carried out by these pyrotechnic devices, impacts of up to 5000 to 7000 g occur, which are sensitive electronic devices mounted on projectiles or satellites. Physical damage can be done to electronics or satellites themselves. In particular, pollutants such as gases generated during explosion may be absorbed by lenses or mirrors of satellite mounting optics, which may cause optical performance degradation. In fields such as projectiles, guided missiles, and satellites, even if a single failure factor occurs in the component layer, it is characterized by the failure of the entire system, which requires very high reliability. Thus, a low impact non-explosive separation device that can have a low impact and fast operating time in the separation operation, and do not repel contaminants can solve these problems.

Therefore, the present invention has been made to solve the above problems, the present invention was developed to solve the problems presented in the background, to provide a non-explosive separation device using a shape memory alloy cylinder and wire. The purpose is. In detail, the center bolt with shape memory alloy cylinder and heater can be used to support large loads, and the external structure can be easily separated by quick center bolt breakage. can do. It is aimed at simplifying the trigger structure and using the shape memory alloy wires very quickly. It also provides a mechanism to have a simple structure for reassembly after separator operation.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

A first object of the present invention is to provide a separation device for separating an external structure when necessary by the occurrence of a trigger, a plurality of outer holes spaced apart from each other at predetermined intervals on the side, an open portion with an open top and a bottom closed A housing having a bottom surface; A shape memory alloy cylinder composed of a shape memory alloy expanded in an axial direction by heat; A center bolt having the bottom of the bolt head in contact with the top surface of the shape memory alloy cylinder; A locking sleeve installed inside the housing and having a cylindrical insert portion into which a shape memory alloy cylinder is inserted, and a cylindrical insert portion into which a central bolt is inserted; A retainer having a lower first inclined surface in contact with an upper inclined surface of the center bolt and a lower second inclined surface in contact with an upper inclined surface of the outer circumferential portion of the locking sleeve to restrict the upper side movement of the bolt before triggering; A trigger block disposed between the housing and the locking sleeve and having a plurality of wire guides formed on the outer circumferential surface in parallel to each other in a longitudinal direction, the trigger block restraining radial movement of the retainer before triggering; And wire guides, each end of which is fixed to an outer hole, and contracted by electric power supplied as a trigger occurs to move the trigger block upwards to restrain the radial movement of the retainer and the upward movement of the center bolt. It can be achieved as a non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire, including; shape memory alloy wire to allow the tension of the central bolt to release.

It may be characterized in that it further comprises a housing lid installed on the housing to close the housing.

It may be characterized in that it further comprises a safety spring provided between the lower surface of the housing lid and the top surface of the trigger block to prevent the upper side movement of the trigger block before the trigger occurs.

It is characterized in that it further comprises a damping spring provided between the lower surface of the housing lid and the upper end of the center bolt to prevent the impact caused by the break of the center bolt when a trigger occurs.

It may be characterized in that it further comprises a heater that is configured on one side of the outer surface of the shape memory alloy cylinder to generate heat in accordance with the power supply to heat the shape memory alloy.

It may be characterized in that it further comprises a safety cylinder provided between the upper first inclined surface of the retainer and the lower surface of the housing lid to restrain the upper side movement of the retainer.

Each of the lower first inclined plane of the retainer in contact with the upper inclined plane of the center bolt and the upper inclined plane of the center bolt is composed of an inclined plane inclined outward, and an upper second of the retainer in contact with the inner inclined plane of the trigger block and the inner inclined plane of the trigger block. Each of the inclined surfaces may be configured as an inclined surface inclined outward.

Each of the lower second inclined surface of the retainer contacting the upper inclined surface of the locking sleeve and the upper inclined surface of the locking sleeve is configured to be inclined outwardly, and the upper first inclined surface of the retainer in contact with the lower safety slope of the safety cylinder and It may be characterized by consisting of an inclined surface inclined in the inward direction.

The retainer may be divided into a plurality of parts based on a cross section parallel to the axial direction.

The wire guide is composed of a first wire guide and a second wire guide configured to be parallel to each other at predetermined intervals, and the shape memory alloy wire is inserted into the first wire guide and the second wire guide in a U-shape, and each end of the wire guide is externally formed. It is fixed to the hole may be characterized in that the trigger block is moved to the upper side by the contraction when the trigger occurs due to the application of power.

The lower surface of the housing is provided in the form of a flange configured to be coupled to the external structure, the lower surface of the housing is provided to protrude to the lower end of the central bolt further comprises a threaded central hole for fixing the lower end of the central bolt It may be characterized by.

The center of the housing lid may further include an insertion hole configured to allow the reset pin to be inserted, and the center of the top surface of the center bolt may further include a reset pin insertion groove provided to fit with the end of the reset pin. .

A second object of the present invention is a separation system for separating an external structure by a trigger generation, the non-explosive separation device; A power cable for supplying power to the shape memory wire of the separator; A power supply unit supplying power to the heater of the separation device; And a memory for controlling the power supply and the power cable to adjust the power supplied to the power supply and the power cable, and determining whether the center bolt of the separation device is broken. It can be achieved as a non-explosive separation system using alloy wires.

According to a third aspect of the present invention, there is provided a method of installing a non-explosive separation device, the method comprising: inserting a locking sleeve having a cylinder inserting portion and a cylindrical inserting portion inside a housing having an upper portion; Inserting a shape memory alloy cylinder into the cylinder inserting portion and inserting a central bolt into the cylindrical inserting portion; Installing the retainer in contact with the top surface of the locking sleeve, and inserting a trigger block having the shape memory alloy wire between the locking sleeve and the housing to fix the retainer and projecting the end of the shape memory alloy wire through the housing outer hole; And installing a safety spring on an upper surface of the trigger block, and closing the upper portion of the housing with a housing lid, wherein the non-explosive separation device using the shape memory alloy cylinder and the shape memory alloy wire is provided. Can be achieved.

In the closing step, it may further comprise the step of installing a damping spring on the top surface of the center bolt.

In addition, the fourth object of the present invention, in the trigger preparation method of the separation device using the separation system, when the control unit determines that it is necessary to prepare the separation of the external structure by the separation device, by controlling the power supply unit Supplying power to the heater of the separating device via a cable; Heating the shape memory alloy cylinder by a heater to tension the shape memory alloy cylinder in an axial direction; The center bolt, which is in contact with the top surface of the shape memory alloy cylinder and the bottom of the bolt head, is stretched in the longitudinal direction such that the top inclined surface of the center bolt is in contact with the lower first inclined surface of the retainer to apply a force upwardly to the retainer; The upper first inclined surface of the retainer contacts the lower inclined surface of the safety cylinder to restrain the upper side movement of the retainer, and a radial force is applied to the retainer; Restraining the radial movement of the retainer by a trigger block in contact with the upper second inclined surface of the retainer and the inner inclined surface; a non-explosive separation system using a shape memory alloy cylinder and a shape memory alloy wire; It can be achieved as a trigger preparation method of the separation device using.

In the restraining step, it may further comprise the step of preventing the upper side movement of the trigger block by a safety spring provided between the upper surface of the trigger block and the lower surface of the housing lid.

The controller may control the power supplied to the power supply unit to adjust heat generated by the heater.

According to a fifth aspect of the present invention, there is provided a method for separating an external structure, the method comprising: supplying power to a shape memory alloy wire through a power cable when it is determined that the external structure needs to be separated from the control unit; Compressing the powered shape memory alloy wire so that the trigger block is moved upward by the shape memory alloy wire inserted into the wire guide of the trigger block; Moving the retainer in contact with the inner inclined surface of the trigger block in a radial direction as the upper side of the trigger block moves; Tensioning the central bolt to the upper side according to the radial movement of the retainer; And one end of the central bolt is broken to separate the external structure. It can be achieved as a separation method using a non-explosive separation system comprising a.

In the separating step, it may further comprise the step of absorbing the impact force due to the break of the central bolt by a damping spring provided between the upper surface of the center bolt and the lower surface of the housing lid.

The controller may control the power supply unit for supplying power to the shape memory alloy cylinder to adjust the tensile force applied to the center bolt, and adjust the power supplied to the shape memory alloy wire through the power cable.

A sixth object of the present invention is a method for reassembling the separation device, the center bolt is broken after the external structure is separated, the step of releasing the housing lid, replacing the center bolt; Inserting the reset pin into the insertion hole formed in the housing lid to fit the lower end of the reset pin into the insertion groove formed in the center upper surface of the center bolt; Inserting a reset nut at the lower end of the center bolt and tightening the reset nut; Compressing the shape memory alloy cylinder according to tightening of the reset nut; And releasing the reset pin and the reset nut, and fastening the safety cylinder, the damping spring, the safety spring, and the housing lid. The non-explosive separation device using the shape memory alloy cylinder and the shape memory alloy wire, comprising: Can be achieved as a reassembly method.

Therefore, according to one embodiment of the present invention as described above, it is possible to quickly and safely separate the external structure. The non-explosive method can reduce the high impact and can prevent pollutants such as gas. It also prevents the risk of small debris or other collisions that can occur during an explosion. Due to the use of shape memory alloy wires, the trigger structure can be made very simple, and the quick operation time of the wires allows for quick operation. In addition, the use of the shape memory alloy cylinder and the center bolt can support and separate the large load of the external structure, and the mechanism is also very simple compared to the existing separator mechanism.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a perspective view of a low-impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of a low-impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention,
3 is a cross-sectional view taken along line AA of FIG.
4 is a flow chart of a method of installing a low impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention;
5A is a perspective view of a locking sleeve according to an embodiment of the present invention,
5B is a cross-sectional view taken along line BB of FIG. 4A;
6A is a perspective view of a retainer according to an embodiment of the present invention;
6B is a cross-sectional view taken along line CC of FIG. 5A;
7A is a perspective view of a trigger block according to an embodiment of the present invention;
7B is a sectional view taken along line DD of FIG. 7A;
8 is a flowchart of a trigger preparation method using a low impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention;
9 is a flow chart of the external structure separation method using a low-impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention,
10 is a cross-sectional view of a low-impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire in a state in which the central bolt is broken according to an embodiment of the present invention;
11 is a flowchart of a reassembly method of a low impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire according to an embodiment of the present invention;
12 is a perspective view of a low-impact non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire equipped with a reset pin and a reset bolt for reassembly according to an embodiment of the present invention;
FIG. 13 illustrates a cross-sectional view of the EE of FIG. 12.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings. Throughout the specification, when a part is 'connected' to another part, this includes not only 'directly connected' but also 'indirectly connected' with another element in between. do. In addition, "including" a certain component does not exclude other components unless specifically stated otherwise, it means that may further include other components.

Hereinafter will be described the configuration, operation and installation method of the low-impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape alloy wire 520 according to an embodiment of the present invention. First, Figure 1 shows a perspective view of a low impact non-explosive separation device 100 using a shape memory alloy cylinder 500 and a shape memory alloy wire 520 according to an embodiment of the present invention. And, Figure 2 shows an exploded perspective view of the low-impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape memory alloy wire 520 according to an embodiment of the present invention. 3 is a cross-sectional view taken along the line A-A of FIG.

As shown in Figures 1, 2 and 3, the low-impact non-explosive separation device 100 according to an embodiment of the present invention is inserted into the housing 101, the housing 101, the upper portion is formed as an open portion The locking sleeve 200 is installed, the shape memory alloy cylinder 500 is inserted into the cylinder inserting portion 201 of the locking sleeve 200, the heater 510 is applied to heat the shape memory alloy cylinder 500 do. In addition, the center bolt 600 is inserted into the cylindrical insertion portion 202 of the locking sleeve 200, and includes a retainer 300 for restraining the upper side movement of the center bolt 600 before the trigger occurs. The trigger block 400 restrains radial movement of the retainer 300 before triggering, the safety cylinder 310 restrains movement of the upper side of the retainer 300, and the upper side of the trigger block 400 before triggering. Safety spring 710 to prevent movement, the damping spring 720 and the housing lid 150 for absorbing the impact force due to the break of the central bolt 600 when the trigger occurs.

And, Figure 4 shows a flow chart of the installation method of the low-impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape memory alloy wire 520 according to an embodiment of the present invention. First, as shown in FIGS. 2 and 3, the housing 101 is provided at one side of the upper end with a predetermined interval to form an outer hole 105 provided as a pair. In addition, the upper portion is provided with an open opening, the lower surface is preferably composed of a flange 104 to be coupled to the external structure. As described later, the end of the shape memory alloy wire 520 inserted into the first wire guide 401 and the second wire guide 402 of the trigger block 400 protrudes into the outer hole 105 and is fixedly installed. .

As shown in FIG. 2, the locking sleeve 200 is inserted into the inner space of the housing 101 (S1). Accordingly, the lower surface of the locking sleeve 200 comes into contact with the inner bottom surface 102 of the housing 101. Figure 5a is a perspective view of the locking sleeve 200 according to an embodiment of the present invention, Figure 5b shows a cross-sectional view B-B of Figure 4a. 2, 5A and 5B, the locking sleeve 200 has an inner bottom surface 205 to constitute a cylinder inserting portion 201 into which the shape memory alloy cylinder 500 is inserted. have. In addition, the center bolt 600 includes a cylindrical insertion portion 202 is installed. In addition, the upper surface 203 of the locking sleeve 200 is in contact with the bolt head bottom 620 of the center bolt 600. And, as will be described later, it can be seen that the inclined surface is formed in the upper inclined surface 204 of the locking sleeve 200, 200 which comes into contact with the lower second inclined surface 304 of the retainer 300. have.

The center bolt 600 is inserted into and installed in the cylindrical insertion portion 202 of the locking sleeve 200, and the shape memory alloy cylinder 500 is inserted into the cylinder insertion portion 201 (S2). As shown in Figure 2 and 3, the outer surface of the shape memory alloy cylinder 500 is provided with a heater 510 is generated by the power supply. Therefore, as will be described later, when the shape memory alloy cylinder 500 is heated by the heater 510, the shape memory alloy cylinder 500 is tensioned in the axial direction, and applies a tensile force to the central bolt 600. .

Then, the retainer 300 is installed in contact with the top inclined surface 204 of the locking sleeve 200, and the shape memory is formed in the first and second wire guides 401 and 402 between the locking sleeve 200 and the housing 101. The retainer 300 is fixed by inserting the trigger block 400 in which the alloy wire 520 is installed. Then, the end of the shape memory alloy wire 520 is projected to the housing outer hole 105 to be fixed (S3).

6A is a perspective view of a retainer 300 according to an embodiment of the present invention, and FIG. 6B is a sectional view taken along the line C-C of FIG. 6A. Retainer 300 is divided into four, as shown in Figure 2 in a specific embodiment. However, this specific number of divisions does not affect the scope of the present invention, of course. As shown in FIGS. 6A and 6B, the retainer 300 is inclined toward the inner side of the first inclined surface 301 of the upper retainer 300, which is in contact with the lower inclined surface 311 of the safety cylinder 310. have. Therefore, the upper side movement of the retainer 300 is restrained by the safety cylinder 310.

In addition, the second inclined surface 302 of the upper end of the retainer 300, which is in contact with the inclined surface 404 of the trigger block 400, is inclined toward the outside. Therefore, as long as the trigger block 400 does not move to the upper side, that is, the trigger is not generated, the retainer 300 is constrained in the radial direction by the trigger block 400. In addition, the retainer 300 includes a lower first inclined surface 303 in contact with the bolt head upper inclined surface 640 of the center bolt 600, and the first inclined surface 303 is inclined toward the outside. . The retainer 300 includes a lower second inclined surface 304 in contact with the upper inclined surface 204 of the locking sleeve 200.

FIG. 7A is a perspective view of a trigger block 400 according to one embodiment of the present invention, and FIG. 7B is a sectional view taken along the line D-D of FIG. 7A. As shown in FIGS. 7A and 7B, the trigger block 400 forms a through hole 405 penetrating from the top to the bottom. In addition, a pair of first wire guides 401 and a second wire guide 402 formed in the lower direction from the upper outer peripheral surface is included. The shape memory alloy wire 520 is inserted into the first wire guide 401 and the second wire guide 402 in a U shape. Then, both ends are projected to the outer hole 105 of the housing 101 to be fixed. Therefore, as will be described later, when the power is supplied to the shape memory alloy wire 520 by the power cable to shrink the shape memory alloy wire 520, the trigger block 400 is moved to the upper side.

As shown in FIG. 7B, the trigger block 400 includes an inclined surface 404 inside the trigger block. The internal inclined surface 404 is inclined outward and contacts the retainer 300 upper second inclined surface 302 to constrain the upper side movement of the retainer 300, thereby triggering the trigger block 400 by triggering. Unless moved to the upper side, the trigger block 400 is to restrain the radial movement of the retainer 300.

Finally, the safety spring 710 is installed on the top surface 403 of the trigger block 400, the damping spring 720 is installed on the top surface 650 of the bolt head of the center bolt 600, and the housing lid 150 The upper portion of the housing 101 is closed by (S4). 2 and 3, a safety spring 710 is included between the trigger block top surface 403 and the housing lid 150 bottom surface, so that the upper side of the trigger block 400 before the trigger occurs. This will prevent movement. In addition, as will be described later, the damping spring 720 is to absorb the impact force by breaking the central bolt 600 in accordance with the trigger generation.

Hereinafter, a method of preparing a trigger and a method of separating external structures using the low impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape memory alloy wire 520 according to an embodiment of the present invention. Do it. This preparation method and separation method is to use the low-impact non-explosive separation device 100 described above.

First, FIG. 8 is a flowchart illustrating a trigger preparation method using a low impact non-explosive separation apparatus 100 using a shape memory alloy cylinder 500 and a shape memory alloy wire 520 according to an embodiment of the present invention. will be. One embodiment of the present invention is composed of a separation system including a low-impact non-explosive separation device 100 to determine whether the control unit of the system needs to prepare the separation of the external structure by the separation device 100. . If it is determined that the preparation for separation of the external structure is necessary in the control unit, the power supply unit is operated to supply power to the heater 510 of the separation device (S10).

Heat is generated in the heater 510 supplied with power by the power supply unit so that the shape memory alloy cylinder 500 is heated. Therefore, the shape memory alloy cylinder 500 is tensioned in the axial direction (S20). When the shape memory alloy cylinder 500 is tensioned in the axial direction, the central bolt 600 in contact with the upper surface of the shape memory alloy cylinder 500 and the bolt head bottom 620 is tensioned in the longitudinal direction. The center bolt 600 is not stretched in the longitudinal direction.

That is, the upper inclined surface of the center bolt 600 and the lower first inclined surface 301 of the retainer 300 is in contact with the force is applied to the retainer 300 (S30), inclined inward of the retainer 300 The upper first inclined surface 301 is in contact with the lower inclined surface 311 of the safety cylinder 310 to restrain the upper side movement of the retainer 300. In addition, according to the tension of the shape memory alloy cylinder 500, the radial force applied to the retainer 300 also triggers the upper second inclined surface 302 and the inner inclined surface 404 of the retainer 300 contact Radial movement of the retainer 300 is also constrained by the block 400 so that the levator 300 is fixed (S40).

Therefore, the power is supplied to the heater 510 so that the shape memory alloy cylinder 500 is tensioned so that the tension is generated in the center bolt 600, but the trigger is not generated. In addition, by the safety spring 710 provided between the upper surface 403 of the trigger block 400 and the lower surface of the housing lid 150 to prevent the upper side movement of the trigger block 400. The controller may control the power supplied to the power supply unit to adjust heat generated by the heater 510 and applied to the shape memory alloy cylinder 500.

Hereinafter, the external structure separation method using the above-described separation device 100 will be described. First, Figure 9 shows a flow chart of the external structure separation method using a low-impact non-explosive separation device 100 using a shape memory alloy cylinder 500 and a shape memory alloy wire 520 according to an embodiment of the present invention. It is. And, Figure 10 is a low-impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape memory alloy wire 520 in the state in which the central bolt 600 is broken in accordance with an embodiment of the present invention It is a cross-sectional view of the.

If it is determined that the control unit needs to separate the external structure, power is supplied to the shape memory alloy wire 520 through the power cable (S50). Then, the shape memory alloy wire 520 supplied with power is compressed, and the trigger block 400 is moved upward by the shape memory alloy wires 520 inserted into the first and second wire guides 401 and 402. Will be (S60).

As the upper side of the trigger block 400 moves, the retainer 300 in contact with the inner inclined surface 404 of the trigger block 400 is moved in the radial direction (S70). Therefore, the restraint on the upper side movement of the center bolt 600 according to the retainer 300 is released. According to the tension of the shape memory alloy cylinder 500, the central bolt 600, which has been continuously applied with the tensile force, continues to be tensioned to the upper side (S80).

As the central bolt 600 is continuously tensioned, the upper end of the central bolt 600 is broken (S90). When the central bolt 600 is broken, the external structure is separated because the coupling force with the external structure no longer exists. In addition, by the damping spring 720 provided between the upper surface of the central bolt 600 and the lower surface of the housing lid 150, the impact force due to the break of the central bolt 600 is absorbed (S100).

And, in this separation method step, the control unit, by controlling the power supplied to the power supply to adjust the tension applied to the central bolt 600, it is possible to adjust the power supplied to the shape memory alloy through the power cable.

Hereinafter, a method of reassembling the low impact non-explosive separation device 100 using the shape memory alloy cylinder 500 and the shape memory alloy wire 520 described above will be described. First, FIG. 11 is a flowchart illustrating a reassembly method of a low impact non-explosive separation device 100 using a shape memory alloy cylinder 500 and a shape memory alloy wire 520 according to an embodiment of the present invention. . 12 is a low-impact non-explosion type using a shape memory alloy cylinder 500 and a shape memory alloy wire 520 equipped with a reset pin 800 and a reset bolt for reassembly according to an embodiment of the present invention. A perspective view of the separator 100 is shown, and FIG. 13 is a sectional view of the EE of FIG. 12.

After the central bolt 600 is broken and the external structure is separated, the controller stops the power supply to the power supply unit and the shape memory alloy wire 520. Then, the housing lid 150 is released, and the damping spring 720 and the safety cylinder 310 are released to replace the central bolt 600 (S1000).

Then, the housing lid 150 is closed again, and the reset pin 800 is inserted into the insertion hole 151 formed in the housing lid 150 so that the lower end of the reset pin 800 is placed on the center upper surface of the central bolt 600. The fitting is fitted to the insertion groove 610 is formed (S2000). 12 and 13, the lower cross section of the reset pin 800 according to the embodiment of the present invention is provided in a quadrangular shape, and the bottom surface (bolt) of the insertion groove 610 of the center bolt 600 is the same. 630 is also provided in a square shape. Therefore, the reset pin 800 and the insertion groove 610 is shaped to fit.

Then, the reset nut 810 is inserted into the lower end of the central bolt 600 (S3000), and the reset nut 810 is tightened (S4000). When the reset pin 800 is tightened, the center bolt 600 is moved downward as the screw moves, and the shape memory alloy cylinder 500 is compressed (S5000). When the shape memory alloy cylinder 500 is compressed as desired, the reset pin 800 and the reset nut 810 are released, and the safety cylinder 310, the damping spring 720, the safety spring 710, and the housing lid are removed. 150 is fastened (S6000).

100: low impact non-explosive separation device
101: housing
102: housing inner bottom
104: Flange
105: outside hall
150: housing lid
151: insertion hole
200: locking sleeve
201: cylinder insert
202: cylindrical insert
203: top of the locking sleeve
204: Locking sleeve top slope
205: Locking sleeve inner bottom
300: retainer
301: retainer upper first slope
302: retainer top second slope
303: Lower retainer first slope
304: Lower second inclined plane of retainer
310: safety cylinder
311: Safety cylinder lower slope
400: trigger block
401: First wire guide
402: second wire guide
403: top surface of the trigger block
404: inside slope of the trigger block
405: trigger block through hole
500: shape-retaining alloy cylinder
510: heater
520: shape suppression alloy wire
600: center bolt
610: Insertion groove
620: bolt head bottom
630: bottom of the bolt head
640: bolt head top slope
650: bolt head top surface
710: safety spring
720: damping spring
800: reset pin
810: reset nut

Claims (22)

In the separation device for separating the external structure when necessary by the trigger generation,
A housing having a plurality of outer holes spaced apart from each other at predetermined intervals on a side surface, an open portion of which an upper portion is opened, and a lower surface of which a lower portion is closed;
A shape memory alloy cylinder composed of a shape memory alloy expanded in an axial direction by heat;
A central bolt having a bottom of the bolt head in contact with an upper surface of the shape memory alloy cylinder;
A locking sleeve installed inside the housing and having a cylinder insert portion into which the shape memory alloy cylinder is inserted and a cylindrical insert portion into which the center bolt is inserted;
A retainer having a lower first inclined surface in contact with an upper inclined surface of the center bolt and a lower second inclined surface in contact with an upper inclined surface of the outer circumferential portion of the locking sleeve to restrain the upper side movement of the center bolt before the trigger occurs;
A trigger block installed between the housing and the locking sleeve and having a plurality of wire guides formed in parallel to each other on an outer circumferential surface thereof in a longitudinal direction, the trigger block restricting radial movement of the retainer before a trigger occurs; And
It is installed in the wire guide, each end is fixed to the outer hole, and is contracted by the power supplied in accordance with the trigger occurs to move the trigger block upwards, so that the radial movement of the retainer and the center bolt The shape memory alloy wire and the shape memory alloy wire to release the constraints on the upward movement, to allow the tension of the central bolt; non-explosive separation device using a shape memory alloy wire. The method of claim 1,
Non-explosive separation device using a shape memory alloy cylinder and the shape memory alloy wire, characterized in that it further comprises a housing lid installed on the housing to close the housing. The method of claim 2,
The shape memory alloy cylinder and the shape memory alloy wire further comprises a safety spring provided between the lower surface of the housing lid and the top surface of the trigger block to prevent the upper side movement of the trigger block before the trigger occurs. Non-explosive separation device. The method of claim 2,
Shape memory alloy cylinder and the shape memory alloy wire is provided between the lower surface of the housing lid and the upper end of the center bolt to prevent the impact caused by the break of the center bolt when the trigger occurs. Non-explosive separation device using. The method of claim 1,
A non-explosion type using the shape memory alloy cylinder and the shape memory alloy wire, characterized in that it further comprises a heater configured to heat the shape memory alloy by generating heat in accordance with the power supply is configured on one side of the outer surface of the shape memory alloy cylinder Separator. The method of claim 2,
A non-explosion type using the shape memory alloy cylinder and the shape memory alloy wire further comprises a safety cylinder provided between the upper first inclined surface of the retainer and the lower surface of the housing lid to restrain the upper side movement of the retainer. Separator. The method according to claim 6,
Each of the lower first inclined surfaces of the retainer in contact with the upper inclined surface of the center bolt and the upper inclined surface of the center bolt is configured to be inclined outwardly,
Non-explosion using the shape memory alloy cylinder and the shape memory alloy wire, characterized in that each of the upper inclined surface of the retainer in contact with the inner inclined surface of the trigger block and the inclined surface inclined outwardly. Type separator. The method of claim 7, wherein
Each of the top inclined surface of the locking sleeve and the bottom second inclined surface of the retainer in contact with the top inclined surface of the locking sleeve is configured to be inclined outwardly,
Non-explosive separation using a shape memory alloy cylinder and a shape memory alloy wire, characterized in that the upper surface of the first inclined surface of the retainer in contact with the safety cylinder lower inclined surface and the lower surface of the safety cylinder is inclined in the inward direction Device. The method of claim 1,
The retainer is a non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire, characterized in that divided into a plurality of based on the cross section parallel to the axial direction. The method of claim 1,
The wire guide is composed of a first wire guide and a second wire guide configured to be spaced apart from each other at predetermined intervals in parallel,
The shape memory alloy wire is inserted in a U-shape into the first wire guide and the second wire guide, and each end of the shape memory alloy wire is fixed to the outer hole to move the trigger block to an upper side by contraction when a trigger occurs due to power application. Non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire, characterized in that. The method of claim 1,
The lower surface of the housing is provided in the form of a flange configured to be coupled to the external structure,
Using the shape memory alloy cylinder and the shape memory alloy wire on the lower surface of the housing further comprises a central hole is provided with a lower end of the center bolt protruding to fix the lower end of the center bolt Non-explosive separator. The method of claim 2,
The center of the housing lid further comprises an insertion hole configured to be inserted into the reset pin,
Non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire further comprises a reset pin insertion groove in the center of the top surface of the center bolt to be in shape with the end of the reset pin. In the separation system for separating the external structure by the trigger generation,
A non-explosive separator according to any one of claims 1 to 12;
A power cable for supplying power to the shape memory wire of the separator;
A power supply unit supplying power to the heater of the separator; And
And a control unit configured to control the power supply unit and the power cable to adjust power supplied to the power supply unit and the power cable, and determine whether the center bolt of the separation device is broken. Non-explosive separation system using leader and shape memory alloy wire. In the installation method of the non-explosive separation device according to any one of claims 2 to 12,
Inserting a locking sleeve having a cylinder inserting portion and a cylindrical inserting portion into a housing having an upper portion formed as an open portion;
Inserting a shape memory alloy cylinder into the cylinder inserting portion and inserting a central bolt into the cylindrical inserting portion;
A retainer is installed in contact with the inclined surface of the top of the locking sleeve, and a trigger block having a shape memory alloy wire is inserted between the locking sleeve and the housing to fix the retainer and the end of the shape memory alloy wire to the outer hole of the housing. Protruding to fix; And
Installing a safety spring on the upper surface of the trigger block, and the method of installing a non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire comprising the step of closing the upper portion of the housing with a housing lid. . 15. The method of claim 14,
In the closing step,
Installing a non-explosive separation device using a shape memory alloy cylinder and a shape memory alloy wire further comprising the step of installing a damping spring on the upper surface of the center bolt. In the trigger preparation method of the separation device using the separation system of claim 13,
If it is determined that the control unit needs to prepare for the separation of the external structure, supplying power to the heater of the separation device through the power cable by controlling the power supply unit;
Heating the shape memory alloy cylinder by a heater to tension the shape memory alloy cylinder in an axial direction;
The center bolt which is in contact with the top surface of the shape memory alloy cylinder and the bottom of the bolt head is tensioned in the longitudinal direction so that the upper inclined surface of the center bolt is in contact with the lower first inclined surface of the retainer to apply a force to the retainer to the upper side ;
Contacting a lower first inclined surface of the retainer with the lower inclined surface of the retainer to restrain the upper side movement of the retainer, and apply a radial force to the retainer;
Restraining the radial movement of the retainer by a trigger block in contact with the upper second inclined surface of the retainer and the inner inclined surface; a non-explosion type using a shape memory alloy cylinder and a shape memory alloy wire; How to prepare trigger for separation device using separation system. 17. The method of claim 16,
In the restraining step,
The shape memory alloy cylinder and the shape memory alloy wire further comprising the step of preventing the upper side movement of the trigger block by a safety spring provided between the upper surface of the trigger block and the lower surface of the housing lid. Trigger preparation method of separation device using non-explosive separation system. 17. The method of claim 16,
The control unit controls the power supplied to the power supply unit to control the heat generated by the heater trigger of the separation device using a non-explosive separation system using a shape memory alloy cylinder and a shape memory alloy wire How to prepare. In the external structure separation method using the separation system of claim 13,
Supplying power to the shape memory alloy wire through the power cable when it is determined that the external structure needs to be separated by the control unit;
Compressing the supplied shape memory alloy wire to move the trigger block to an upper side by the shape memory alloy wire inserted into the wire guide of the trigger block;
Moving the retainer in contact with an inner inclined surface of the trigger block in a radial direction as the upper side of the trigger block moves;
Tensioning the center bolt to the upper side according to the radial movement of the retainer; And
Separating the one end of the central bolt to separate the external structure; Separation method using a non-explosive separation system comprising a. The method of claim 19,
In the separation step,
Separating method using a non-explosive separation system further comprising the step of absorbing the impact force due to the break of the central bolt by a damping spring provided between the upper surface of the center bolt and the lower surface of the housing lid. The method of claim 19,
The control unit,
Adjusting the tension applied to the central bolt by controlling the power supply for supplying power to the shape memory alloy cylinder,
Separation method using a non-explosive separation system using a shape memory alloy cylinder and a shape memory alloy wire, characterized in that for controlling the power supplied to the shape memory alloy wire through the power cable. In the method of reassembling the separation device of any one of claims 1 to 12,
After the center bolt is broken and the external structure is separated, releasing the housing lid and replacing the center bolt;
Inserting a reset pin into the insertion hole formed in the housing lid to fit the lower end of the reset pin into an insertion groove formed in the center upper surface of the center bolt;
Inserting a reset nut at the lower end of the center bolt and tightening the reset nut;
Compressing the shape memory alloy cylinder according to the tightening of the reset nut; And
Releasing the reset pin and the reset nut, and fastening a safety cylinder, a damping spring, a safety spring, and the housing lid; and a non-explosion type using a shape memory alloy cylinder and a shape memory alloy wire, comprising: How to reassemble the separator.

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