CN105667839B - A non-pyrotechnic separation device - Google Patents

Abstract

The invention discloses a non-initiating-point type separating device, which comprises a separating end and a capturing end, wherein the separating end and the capturing end are respectively arranged at two ends of a contact end of a body to be separated and are used for mutually connecting the body to be separated into an integrated structure; the separating end is arranged at any end of the contact end of the body to be separated, and comprises a separating end connecting frame, a power-off electromagnet, a shell, an outer rotating disc, a torsion spring, an inner rotating disc, a roller, a separating nut and a bolt; the capturing end is arranged at the other end of the contact end of the body to be separated through the capturing end connecting frame. The invention uses the power-off electromagnet as the control device, has sensitive reaction, uses the torsion spring as the driving source, does not need heating compared with the shape memory alloy, has fast reaction speed, generates large driving force, enables the separating device to overcome the friction force existing between parts more easily, realizes unlocking in a mode of rotating an external turntable, replaces sliding friction with rolling friction, reduces the driving moment required by unlocking, and enables the required torsion spring to have lower rigidity.

Description

A non-pyrotechnic separation device

technical field

The invention relates to a non-pyrotechnic separation device, which can replace the traditional pyrotechnic separation device and be used in the fields of separation between rocket stages, separation of satellite-rocket connections, deployment of large antennas on satellites, deployment of solar panels, etc., so that Devices or equipment distributed on separate two-body contact surfaces can be connected and disconnected.

Background technique

The point separation device can be applied to the separation between rocket stages, the separation of satellite-rocket connections, the deployment of large antennas on satellites, the deployment of solar panels, and other devices or equipment distributed on the separated two-body contact surface to achieve connection and separation.

Currently known point separation devices mainly use pyrotechnic products, such as explosive bolts, pyrotechnic nuts, pyrotechnic locks and other products. Among them, such as the working principle of the pyrotechnic nut is: when the bolt is locked, the bolt is connected to the separation nut, and when it is separated, the internal fuel of the separation nut is detonated by electricity, so that it is quickly separated from the locked state and the bolt is released; another example is the pyrotechnic lock. Mainly includes an electrical connector , piston, loading nut connecting rod, etc., its working principle is: push the slidable piston with the force of internal explosion, so that the relevant connecting parts are completely disengaged. However, the above-mentioned pyrotechnic separation devices all have the defects of large impact load on the structure, harmful gases and fragments, etc. polluted the space environment due to the combustion or explosion of the gunpowder, are not reusable, are not convenient for experimental verification, and are not easy to store.

At the same time, non-pyrotechnic separation devices can also be used. Non-pyrotechnic separation devices mostly use shape memory alloy wires as the trigger source to drive and separate the separation nut from the bolt, such as the QWKNUT separation nut. When locking, the bayonet restricts the rotation of the runner. The angle between the frame and the separating nut and the inner groove of the runner is staggered, and the roller constrains the separating nut to radially separate to realize locking. When separating, the driving source drives the bayonet to move, releases the circumferential restriction of the runner, makes it rotate at a certain angle under the action of other external forces, the roller falls into the groove of the runner, the separating nut loses its radial restraint, and the separating nut separates and releases the bolt , complete unlocking. However, separation devices based on shape memory alloys often have defects such as small resistance of shape memory alloy wires, low thermal efficiency, long response time, and complex structures.

Contents of the invention

In view of the defects in the prior art, the object of the present invention is to provide a non-pyrotechnic separation device, which has the advantages of simple structure, fast response speed and short separation time.

In order to achieve the above object, technical scheme of the present invention:

A non-pyrotechnic separation device, characterized in that:

The separation device includes a separation end and a capture end which are respectively arranged at both ends of the contact end of the body to be separated, and are used to connect the body to be separated with each other in an integrated structure;

The separation end is arranged at any end of the contact end of the body to be separated, and the separation end includes:

The separation end connection frame arranged at any end of the contact end of the to-be-separated body,

The de-energized electromagnet arranged on the connecting frame of the separated end,

A casing arranged at the center of the end surface of the connecting frame at the separation end and used to accommodate the outer turntable, the casing has a casing through hole for the outer turntable arm to pass through and move laterally for a certain distance,

The outer turntable arranged in the housing and connected to the de-energized electromagnet through the outer turntable arm passing through the through hole of the outer turntable has an inner diameter of the outer turntable accommodating the inner turntable and is uniform along the inner diameter of the outer turntable A number of arc-shaped grooves are laid,

A torsion spring wound on the outside of the outer turntable with a certain torsion reserved, one end of the torsion spring is fixedly connected to the arm of the outer turntable, and the other end is fixed in the torsion spring fixing hole on the connecting frame of the separation end,

an inner turntable set in the inner diameter of the outer turntable, the inner turntable has an inner diameter of the inner turntable for accommodating the separation nut, and a number of slot structures uniformly distributed along the circumferential direction of the inner turntable are the same as the number of the arc grooves,

Several parts are inserted into the rollers in each slot structure, so that each roller is evenly distributed between the inner diameter of the outer turntable and the separation nut when the outer turntable is not rotating, and at the same time when the outer turntable is in the When the torsion spring rotates through a certain angle, it can be squeezed into each of the arc-shaped grooves under the lateral force of the separation nut, and then loses the limiting effect on the separation nut.

A separate nut that is composed of several separate parts and has a nut inner diameter for accommodating bolts. Each separate part is independent of each other and can form a complete nut structure only under the limit action of each roller, so that the nut structure formed by each separate part can be When the outer turntable rotates through a certain angle under the drive of the torsion spring, it will be separated from each other under the action of the elastic parts and the pre-tightening force, and then lose the position-limiting effect on the bolts.

And the bolts that pass through the connection frame of the capture end, the connection frame of the separation end and the separation nut in turn, and have a certain pre-tightening force with the separation nut, one end of the bolt is against the inner wall of the shell of the separation end through an elastic member, and the other One end is fixed on the connecting frame of the capture end;

The capture end is arranged on the other end of the contact end of the body to be separated through the capture end connecting frame.

Further, the de-energized electromagnet is installed on the connecting frame of the separated end through an L-shaped bracket.

Further, the elastic component is preferably a rubber pressing sheet.

Further, the capture end includes:

A capture end connection frame arranged on the other end face of the contact end of the body to be separated;

a sleeve disposed on the capture end connection frame and having an internal cavity;

The inner liner is arranged in the internal accommodation cavity and is used for the bolt ejected from the separation end to pass through and buffer the ejection speed of the bolt under the action of pre-tightening force;

and a rubber pad arranged at the lower end of the inner liner for cooperating with the inner liner to capture the bolts passing through the inner liner, so that the bolts passing through the inner liner vibrate between the rubber pad and the inner liner , to complete the bolt capture process.

Preferably, there is a cross-shaped hole at the center of the inner lining for the bolts ejected from the separation end to pass through under the action of pre-tightening force, and a cross-shaped opening is designed on the inner lining, which can make Let the bolts with a certain speed after leaving pass through, and it is not easy to pop out of the inner accommodation cavity from the cross-shaped opening.

Compared with prior art, the beneficial effect of the present invention:

1. This device does not require pyrotechnics, which greatly reduces the impact on the overall structure of the device. At the same time, it has the advantages of easy storage, no harmful gases, debris, etc. to pollute the environment; it can be used repeatedly, and the product can be verified experimentally .

2. This device uses a de-energized electromagnet as the control device, which has a sensitive response. The release of the outer turntable arm can be completed in a short time when the electrode is turned on, and the required voltage is only 24V; when the power is off, the outer turntable arm can be tightly sucked, Realize locking and save energy.

3. The device uses a torsion spring as the driving source. Compared with the shape memory alloy, it does not need heating, has a fast response speed, generates a large driving force and makes it easier for the separation device to overcome the friction existing between the parts.

4. The device realizes unlocking by rotating the outer turntable, replacing sliding friction with rolling friction, which reduces the driving torque required for unlocking and lowers the required torsion spring stiffness.

5. The catch end of the device cooperates with a lining and a rubber pad to effectively catch and buffer the bolts, reducing the impact of the bolts on the structure during the separation process.

Description of drawings

Fig. 1 is a schematic diagram of the overall assembly of the separation device of the present invention;

Fig. 2 is a partial sectional view of the separation device of the present invention;

Fig. 3 is a schematic structural view of the outer turntable of the separation device of the present invention;

Fig. 4 is a structural schematic diagram of the inner turntable of the separation device of the present invention;

Fig. 5a and Fig. 5b are schematic diagrams of the arrangement structure of the outer turntable, rollers and inner turntable of the separation device of the present invention;

Fig. 6 is a schematic structural diagram of the connection frame of the separating end of the separating device of the present invention;

Fig. 7 is a partial cross-sectional view of the capture end of the separation device of the present invention.

In the figure: 1. Power-off electromagnet, 2. Separation end connection frame, 3. L-shaped bracket, 4. Outer turntable, 41. Outer turntable connecting arm, 42. Inner diameter of outer turntable, 43. Arc groove, 5. Torsion spring, 6. Inner turntable, 61. Slot structure, 7. Separation nut, 8. Roller, 9. Capturing end connection frame, 10. Bolt, 11. Elastic part, 12. Shell, 13. Rubber pad, 14 , sleeve, 15, inner liner, 16, torsion spring fixing hole, 17, separation end connecting frame through hole.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The non-pyrotechnic separation device of the present invention includes a separation end and a capture end, which are respectively arranged at both ends of the contact end of the object to be separated, to connect the objects to be separated into one body and complete the process when the de-energized electromagnet is energized. Separation; its working principle: when locking: under the action of torsion spring preload, the bolt has a radial force component on the separation nut, making it have a tendency to radial displacement, while the roller outside the separation nut limits its radial direction. Displacement, so that the whole device reaches a balance in the outer turntable, and realizes locking; when separating: the power-off electromagnet is energized, and the power-off electromagnet loses magnetism, so the adsorption force of the outer turntable arm disappears, so that the outer turntable can rotate under the drive of the torsion spring After a certain angle, the rollers installed between the inner diameter of the outer turntable and the separation nut are squeezed into the arc groove of the outer turntable, and as each roller loses the limit to the separation nut, the bolts are under the action of the elastic component. The ejection completes the separation; the ejected bolt rushes through the cross-shaped opening of the inner liner in the capture end, and makes it vibrate between the rubber pad and the inner liner until the energy is completely absorbed, so as to realize the whole process of capture and cushioning.

Specifically, as shown in Figures 1-2, the separation end is arranged at any end of the contact end of the body to be separated (generally, it is arranged at the upper end as shown in Figure 1), and the separation end includes:

A separation end connection frame 2 arranged at any end of the contact end of the to-be-separated body;

The de-energized electromagnet 1 arranged on the connection frame 2 of the separated end, the de-energized electromagnet 1 is installed on the connected frame 2 of the separated end through an L-shaped bracket 3, the de-energized electromagnet 1 is connected to a controllable The DC power supply that is cut off, when not electrified, can absorb the outer turntable arm 41 that is connected thereon, when energized, de-energized electromagnet 1 degaussing, thus loses the adsorption force of outer turntable arm 41, and outer turntable arm 41 can be in advance Driven by a torsion spring with a certain torque, it moves a certain distance laterally in the through hole of the shell;

A casing 12 arranged at the center of the end face of the connecting frame at the separation end and used to accommodate the outer turntable, the casing 12 has a casing through hole for the outer turntable arm 41 to pass through and move laterally for a certain distance;

It is arranged in the housing 12 and is connected to the outer dial 4 of the de-energized electromagnet 1 through the outer dial arm 41 passing through the through hole of the housing. A number of arc-shaped grooves 43 are evenly distributed on the inner diameter of the outer turntable, as shown in FIG. 3 ;

A torsion spring 5 wound on the outside of the outer turntable and reserved a certain torque as the driving force for the rotation of the outer turntable. One end of the torsion spring is fixedly connected to the arm of the outer turntable, and the other end is fixed in the torsion spring fixing hole 16 on the connecting frame of the separation end. ,As shown in Figure 6;

The inner turntable 6 is set in the inner diameter of the outer turntable, the inner turntable 6 has the inner diameter of the inner turntable for accommodating the separation nut and a number of slot structures 61 uniformly distributed along the circumferential direction of the inner turntable with the same number of arc grooves ,As shown in Figure 4;

Several parts are inserted into the rollers 8 in each slot structure, and each roller is tangent to the inner diameter 42 of the outer turntable when the outer turntable is not rotating and is arranged between the inner diameter of the outer turntable and the separation nut 7 At the same time, when the outer turntable rotates through a certain angle under the drive of the torsion spring, each roller can be squeezed into each of the arc-shaped grooves under the lateral force of the separation nut, thereby losing the restriction on the separation nut. bit action,

As shown in Figure 5a and Figure 5b, the separate nut 7 which is composed of several separate parts and has the inner diameter of the nut that accommodates the bolt 10, each separate part is independent of each other and can form a complete nut structure only under the limiting action of each roller, In order to make the nut structure formed by each separating part rotate through a certain angle under the drive of the torsion spring, each roller leaves the inner diameter of the outer turntable that is tangent to it, and enters the structure formed by the arc-shaped groove and the slot. In the accommodating space formed, the separation parts of the separation nut produce lateral displacement, and then lose the position-limiting effect on the bolt, so that the elastic parts and the pre-tightening force are separated from each other under the action, and rush out quickly; the elastic part 11 is preferably Using rubber press.

And sequentially pass through the capture end connection frame 9, the separation end connection frame 2 (correspondingly set the separation end connection frame through hole 17 for the bolt to pass through) and the separation nut 7, and the bolt 10 with a certain pre-tightening force between the separation nut, One end of the bolt abuts against the inner wall of the shell of the separating end through an elastic member, and the other end is fixed on the connecting frame of the capturing end;

As shown in Figure 7, the capture end is arranged on the other end of the contact end of the body to be separated through the capture end connection frame, and the capture end includes:

A capture end connection frame 9 arranged on the other end face of the contact end of the body to be separated;

A sleeve 14 disposed on the capture end connection frame and having an internal cavity;

The inner liner 15 is arranged in the internal accommodation cavity and is used for passing the bolt ejected from the separation end under the action of the elastic member and buffering the ejection speed of the bolt;

And it is arranged at the lower end of the inner liner, and is used to cooperate with the inner liner to catch the rubber pad 13 passing through the bolts of the inner liner, so that the bolts passing through the inner liner are between the rubber pad and the inner liner Oscillate to complete the bolt capture process.

Preferably, there is a cross-shaped hole at the center of the inner lining for the bolts ejected from the separation end to pass through under the action of the pre-tightening force, and a cross-shaped opening is designed on the inner lining, which can This makes it difficult for the bolts with a certain speed to pass through from the rear and cannot easily pop out of the inner accommodation cavity from the cross-shaped opening.

The lining should be made of softer and more plastic materials, such as cooked copper, so that after the bolts pass through the cross-shaped hole from top to bottom, the cross-shaped hole can become a shape with four petals facing downwards. The plastic deformation of the bolt is stuck and cannot be easily ejected from the cross-shaped hole; at the same time, due to the symmetrical structure of the end of the bolt, the maximum diameter of the cross-shaped hole is greater than or equal to the diagonal length of the bolt head.

Correspondingly, the connection/assembly relationship of the various parts of the separation device is as follows: the de-energized electromagnet 1 is installed on the L-shaped bracket 3 on the connection frame 2 of the separation end, and the outer rotating disk 4 is placed on the connection frame of the separation end to make it The outer turntable arm is adsorbed on the de-energized electromagnet 1, the torsion spring 5 is wound on the outer side of the outer turntable, and a certain torque is applied to make one end of the outer turntable arm firmly connected, and the other end is fixed to the torsion spring on the connection frame of the separation end Fix the hole 16, place the inner turntable 6 in the inner diameter of the outer turntable and make the non-slot structure part of the inner turntable correspond to the arc groove of the outer turntable, then place the separation nut 7 in the inner diameter of the inner turntable, and finally place the roller 8 Between the inner diameter of the outer turntable and the outer diameter of the separation nut, insert the bolt 10 from the through hole 17 of the connection frame 9 of the separation end and tighten it, attach the rubber pressure piece 11 to the inner center of the top of the casing 12, and install the casing on the separation end connection On the frame; paste the rubber pad 13 on the inner center of the bottom of the sleeve 14, then put the inner liner 15 in the catcher sleeve, and install the sleeve on the connecting frame of the separation end.

Working mode: multiple separation devices can be installed in multi-point distribution on the connection contact surface of the body to be separated to realize connection and separation. The two contact surfaces to be connected at the same time need to have a through hole with a diameter of 13mm to ensure that the bolt can pass through. Install the separation end and the capture end on the upper and lower connectors respectively according to the above installation method, connect the wires of the de-energized electromagnet to a DC power supply such as 24V according to the red positive and black negative, and turn off the power switch. At this time, the device realizes the connection of the upper and lower ends to be separated; when separation is required, the DC power supply is energized, the electromagnet is demagnetized, and the outer turntable rotates at a certain angle under the action of the torsion spring, and each roller enters the curved groove and the slot. In the accommodation space formed by the structure, the separation nut is separated, and then the limiting effect on the bolt is lost, so that the bolt rushes out quickly under the action of the pre-tightening force, and the bolt that is rushed out falls into the capture end, and the separation of the to-be-separated body is completed. process.

The separation device designed above has a simple overall structure, a small mass (about 0.53 kg), and a short separation time (verified by experiments, it only takes about 230 ms from the supply of electrical signals to the realization of separation).

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (5)

1. a kind of non-firer's point type separator, the separator includes being respectively arranged at body contact jaw two ends to be separated, use In separating end and capture end that body phase to be separated connects as integral type structure；

The separating end is arranged at body contact jaw either end to be separated, and the separating end includes：

The separating end connection frame of body contact jaw either end to be separated is arranged at,

It is characterized in that：The separating end also includes：

The dead electricity electromagnet on the separating end connection frame is arranged at,

Be arranged at separating end connection frame end face center position, the shell for accommodating outer rotary table, the shell has for outer The outer casing through hole that rotating disk arm is passed and is laterally moved a distance,

The outer rotary table of dead electricity electromagnet is arranged in the shell and is connected by the outer rotary table arm passed from the outer casing through hole, The outer rotary table has the outer rotary table internal diameter of receiving inner rotary table and along the uniform some arc grooves in the outer rotary table inside diameter hoop direction,

The torsion spring of certain torsion is wound on the outside of the outer rotary table and reserves, the one end is connected with outer rotary table arm, the other end It is fixed in the torsion spring fixing hole on separating end connection frame,

It is set in the inner rotary table in the outer rotary table internal diameter, the inner rotary table has the inner rotary table internal diameter that accommodates separation nut and along institute The uniform some inserting slot constructions consistent with the arc groove quantity of inner rotary table circumferencial direction are stated,

If stem portion is plugged in the roller in each inserting slot construction, and causes each roller when the outer rotary table does not rotate, uniformly Between the outer rotary table internal diameter and separation nut, while when the outer rotary table rotates through certain angle under torsion spring driving, It can be squeezed under separation nut horizontal force in each arc groove, and then lose the spacing work to separation nut With,

The separation nut of nut internal diameter being made up of some separating components and with receiving bolt, each separating component is separate And complete nut structure only can be constituted under each roller position-limiting action, to cause nut structure that each separating component is constituted Can mutually it divide under effect in elastomeric element and pretightning force when the outer rotary table rotates through certain angle under torsion spring driving From,

And capture end connection frame, separating end connection frame and separation nut are sequentially passed through, and with one between separation nut Determine the bolt of pretightning force, described bolt one end is resisted against by elastomeric element on the outer casing inner wall of the separating end, and the other end is solid Due on capture end connection frame；

The capture end connects frame by the capture end and is arranged at the body contact jaw other end to be separated.

2. non-firer's point type separator according to claim 1, it is characterised in that：

The dead electricity electromagnet is installed on the separating end by L bracket and connected on frame.

3. non-firer's point type separator according to claim 1, it is characterised in that：

The elastomeric element is preferred to use rubber tabletting.

4. non-firer's point type separator according to claim 1, it is characterised in that：

The capture end includes：

It is arranged at the capture end connection frame of body contact jaw other end end face to be separated；

It is arranged on the capture end connection frame and the sleeve with inner containment chamber；

The inner containment intracavitary is arranged at, for under pretightning force effect, the bolt ejected from the separating end is passed through simultaneously Buffer the liner that the bolt ejects speed；

And it is arranged at the liner lower end, the rubber captured for being cooperated with the liner through the bolt of the liner Pad.

5. non-firer's point type separator according to claim 4, it is characterised in that：

Under the liner center position is provided with for being acted in pretightning force, the cross that the bolt ejected from the separating end is passed through Perforate.