CN212243847U - Umbrella rope cutter and control circuit - Google Patents
Umbrella rope cutter and control circuit Download PDFInfo
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- CN212243847U CN212243847U CN201922498913.1U CN201922498913U CN212243847U CN 212243847 U CN212243847 U CN 212243847U CN 201922498913 U CN201922498913 U CN 201922498913U CN 212243847 U CN212243847 U CN 212243847U
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Abstract
The utility model discloses an umbrella rope cutterbar, it includes first casing, solenoid, cutting blade and connecting cable, the utility model also discloses a control circuit, it includes power supply, charging circuit, energy storage capacitor circuit, discharge switch, voltage detection circuit and microcontroller. The utility model provides an umbrella rope cutterbar and control circuit based on the electromagnetism technique with higher speed, founds a plurality of circuit module, combines specific components and parts, has realized production, conversion, transmission and the utilization to control signal, provides stable signal source for external cutterbar, guarantees its working property's stability. The whole process does not involve chemical changes, is safer and more reliable, effectively ensures the life safety of parachute jumping personnel, greatly reduces the use cost, and improves the cyclic utilization rate and the service life of the parachute line cutter.
Description
Technical Field
The utility model relates to a parachute jumping safety technical field especially relates to an umbrella rope cutterbar and control circuit.
Background
The cutter is used as an important component of the automatic parachute opening device of the parachute and used for cutting the parachute rope so as to release the backup parachute. In the actual parachute jumping process, when the automatic parachute opening device of the parachute detects that the parachute jumping process meets the activation condition, the rope for fixing the backup parachute pack is cut off through the cutter, so that the pre-pressing spring in the backup parachute pack enables the guiding parachute to pop out, the backup parachute is opened, and parachute jumping personnel can safely land. It follows that the cutter plays a very important role in the parachuting process.
The current parachute cord cutter adopts the chemical principle of electric ignition explosion, a small amount of explosive is installed at the bottom of the cutter, the cutter is connected with a controller through a cable, when the activation condition is met, the controller outputs activation current to the cutter, the explosive is ignited, and the explosive explosion pushes a blade in the cutter to rapidly move forwards so as to cut off a cord for fixing a backup parachute pack.
On one hand, the mode can only be used once due to the use of chemical explosives, and the use cost is higher; on the other hand, the chemical explosion principle has high instability, is easy to generate sparks and redundant heat, and causes danger to the life safety of parachute jumping personnel.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a safety and reliable umbrella cord cutter and control circuit without chemical changes.
In order to achieve the above object, an embodiment of the present invention provides an umbrella cord cutter, which includes a first housing, an electromagnetic coil, a cutting blade, and a connecting cable;
the outer side of one end of the first shell is provided with the electromagnetic coil, and the inner side of the first shell is provided with the cutting blade;
the other end of the first shell is provided with a through hole for the umbrella rope to pass through;
the connecting cable is connected with an external control circuit and used for receiving a control signal and sending the control signal to the electromagnetic coil, so that the electromagnetic coil drives the cutting blade to perform corresponding cutting action on the umbrella rope.
As an improvement of the scheme, the cutting blade is made of ferromagnetic materials or splicing materials with high strength and oxidation resistance.
As an improvement of the above scheme, the electromagnetic coil further comprises a second housing arranged outside the electromagnetic coil and used for supporting the electromagnetic coil.
As an improvement of the scheme, the other end of the first shell is also provided with a stress base for bearing the cutting blade.
As an improvement of the scheme, the electromagnetic coil is provided with a yoke iron.
Another embodiment of the present invention provides a control circuit for controlling an umbrella cord cutter, which comprises a power supply, a charging circuit, an energy storage capacitor circuit, a discharging switch, a voltage detection circuit and a microcontroller;
the power supply is connected with the charging circuit;
the charging circuit is connected with the energy storage capacitor circuit and is used for charging the energy storage capacitor circuit under the control of the microcontroller;
the energy storage capacitor circuit is connected with the discharge switch and is used for correspondingly controlling an external umbrella rope cutter under the control of the discharge switch;
the discharge switch is connected with the microcontroller;
and the voltage detection circuit is connected with the energy storage capacitor circuit and is used for detecting the energy storage capacitor circuit and sending a detection result to the microcontroller so that the microcontroller adjusts the charging process of the energy storage capacitor circuit according to the detection result.
As an improvement of the above scheme, the device further comprises a reverse charging circuit;
and the reverse charging circuit is connected with the energy storage capacitor circuit and is used for reversely charging the power supply under the control of the microcontroller.
As an improvement of the above scheme, the charging circuit includes a rectifying circuit and an inverter circuit.
As a refinement of the above solution, the storage capacitor circuit comprises at least one storage capacitor.
As an improvement of the scheme, the energy storage capacitor is a high-voltage high-power energy storage capacitor.
The utility model provides an umbrella rope cutterbar and control circuit based on electromagnetism acceleration technique, utilizes the magnetic resistance change of the magnetic circuit that solenoid and ferromagnet constitute to attract ferromagnet accelerated motion. The ferromagnetic body is mainly arranged inside the electromagnetic coil, because the ferromagnetic body has higher magnetic permeability than air, the magnetic flux always tends to pass through the path with the minimum magnetic resistance according to the principle of minimum magnetic resistance, namely, the ferromagnetic body is acted by ampere force in the driving coil and accelerated by attraction to generate movement because the magnetizing current and the current in the electromagnetic coil have the same direction, and the power generated by the principle is utilized to realize the cutting action of the umbrella rope. The whole process does not involve chemical changes, is safer and more reliable, and simultaneously the cutting motion process of the cutter can be regulated and controlled, thereby effectively ensuring the life safety of parachutists. More importantly, compared with the traditional cutter based on the explosion principle, the use cost is greatly reduced, and the recycling rate of the cutter is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an umbrella cord cutter provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "outside", "inside", "one end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms first, second and the like in the description and in the claims, are used for descriptive purposes only to distinguish the same technical features, and are not to be construed as indicating or implying a relative importance or implicit indication of the number of technical features indicated, nor is an order or temporal order necessarily described. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
An embodiment of the present invention provides an umbrella cord cutter, which is specific, please refer to fig. 1, and is a structural schematic diagram of the umbrella cord cutter provided by the embodiment of the present invention, which mainly comprises a first housing 1, an electromagnetic coil 2, a cutting blade 3 and a connecting cable 4.
The first shell 1 is used as a key frame of the whole cutter, has a very important function, is preferably a hollow tubular structure in structural shape, a passage track for a cutting blade 3 to perform cutting movement is arranged in the first shell 1, the cutting blade 3 is arranged at one end of the passage track, namely one end of the cutting blade 3 which is positioned in the first shell 1 in an initial state, and meanwhile, the electromagnetic coil 2 is tightly wrapped outside the end of the first shell 1 to realize the control of the cutting blade 3; at the other end of first casing 1, be equipped with the via hole 7 that runs through its upper and lower structure, the umbrella rope in the backup umbrella package passes through first casing 1 through via hole 7, and the edge part of via hole 7 is very smooth, and is lower to the wearing and tearing of umbrella rope, preferably, can set up one deck film material in via hole 7 inside week side, plays the effect of keeping apart moisture and impurity, guarantees the normal operating of cutterbar.
It should be noted that the first housing 1 should be made of a smooth material to reduce the friction generated by the movement of the cutting blade 3, and the inner diameter of the passage track should be larger than the diameter of the cutting blade 3, and a proper gap is left between the inner diameter and the diameter, so as to ensure that the normal cutting movement of the cutting blade 3 is not hindered. The function of the cutting blade 3 is to cut the cord, preferably in the form of a cylindrical cutting blade 3, and to provide a sufficiently sharp linear or circular edge at one end of the blade head to allow it to cut the cord smoothly, completing the cut. The cutting blade 3 is made of ferromagnetic material or splicing material (the main body is made of ferromagnetic material, and other materials can be selected for the head part), and has high strength and oxidation resistance so as to improve the working performance of the whole cutter.
The electromagnetic coil 2 is used for driving the cutting blade 3 to act, plays an important role, and the size, the inductance value and the resistance value of the selected electromagnetic coil 2 directly determine how much electric field energy is converted into magnetic field energy to influence the cutting motion of the cutting blade 3. When designing the electromagnetic coil 2, how to make the magnetic field induced by the coil store enough energy is considered, so the relationship between the resistance and inductance of the coil and the power supply received by the coil is matched to make the cutter achieve the maximum energy utilization rate in the effective discharge time, the electromagnetic coil 2 is preferably a single-stage coil, and of course, a multi-stage coil can be selected according to the actual situation.
The connecting cable 4 is connected with an external control circuit and used for receiving a control signal (namely a control electric signal) and transmitting the control signal to the electromagnetic coil 2, so that the electromagnetic coil 2 is electrified to drive the cutting blade 3 to perform corresponding cutting action on the umbrella rope at the other end of the access track.
The embodiment of the utility model provides an umbrella rope cutterbar, based on electromagnetism acceleration technique, the magnetic resistance of the magnetic circuit that utilizes solenoid 2 and ferromagnet to constitute changes and attracts ferromagnet accelerated motion. The ferromagnetic body is mainly placed inside the electromagnetic coil 2, because the ferromagnetic body has a higher magnetic permeability than air, according to the principle of minimum magnetic resistance, the magnetic flux always tends to pass through the path with minimum magnetic resistance, namely, equivalently, because the magnetizing current has the same direction with the current in the electromagnetic coil 2, the ferromagnetic body is acted by ampere force in the driving coil, is accelerated by the attraction force to generate movement, and the power generated by the principle is utilized to realize the cutting action of the umbrella rope. The whole process does not involve chemical changes, is safer and more reliable, and simultaneously the cutting motion process of the cutter can be regulated and controlled, thereby effectively ensuring the life safety of parachutists. More importantly, compared with the traditional cutter based on the explosion principle, the use cost is greatly reduced, and the recycling rate of the cutter is improved.
Preferably, in the above embodiment, the cutting blade 3 is made of ferromagnetic material or splicing material, such as some stainless steel, aluminum alloy, copper alloy, ceramic, etc., to ensure accurate implementation of the cutting action.
Preferably, in the above embodiment, the cutter further comprises a second housing 5 provided outside the electromagnetic coil 2 for supporting the electromagnetic coil 2. The second housing 5 is sleeved outside the first housing 1, mainly for supporting and protecting the electromagnetic coil 2, and the material of the second housing 5 is preferably a ferromagnetic material or other materials with high strength and oxidation resistance.
Preferably, in the above embodiment, the other end of the first housing 1 is further provided with a force-receiving base 8 for receiving the cutting blade 3. After cutting blade 3 accomplished the cutting action to the umbrella rope, through set up atress base 8 in terminal point side for cutting blade 3's high-speed motion final striking is accomplished whole cutting action on atress base 8, and preferably, atress base 8 should adopt the material that has high mechanical strength to make, and the surface is even flat, guarantees that cutting blade 3's striking can not cause the influence to other parts.
Preferably, in the above embodiment, the electromagnetic coil 2 is provided with the yoke 9. The yoke 9 is used for enhancing the suction force inside the electromagnetic coil 2, and magnetic lines of force generated by the electromagnetic coil 2 are sealed inside the yoke and are more concentrated, so that the utilization rate of the magnetic field of the electromagnet is improved.
Another embodiment of the present invention provides a control circuit, which is used for controlling the above-mentioned umbrella cord cutter, and is composed of a plurality of components and a circuit, specifically, please refer to fig. 2, for the embodiment of the present invention provides a structural schematic diagram of a control circuit, which includes a power supply, a charging circuit, an energy storage capacitor circuit, a discharging switch, a voltage detection circuit and a microcontroller.
The power supply is connected with the charging circuit and is used as an energy source of the whole circuit, the power supply is preferably a lithium battery with high capacity, low weight and high performance, the charging of the energy storage capacitor circuit is realized, and the power supply can supply power for other systems.
The charging circuit is connected between the power supply and the energy storage capacitor circuit, is connected with the microcontroller and is used for regulating and controlling the charging process of the energy storage capacitor circuit under the control of the microcontroller so as to realize charging of the energy storage capacitor circuit.
The energy storage capacitor circuit is connected between the charging circuit and the discharging switch, and supplies power to the electromagnetic coil 2 in the external cutter through the control of the discharging switch so as to ensure the normal realization of the cutting action in the cutter.
And the discharge switch is connected with the microcontroller and used for receiving the control of the microcontroller and controlling the discharge of the energy storage capacitor. When the backup umbrella activating device is activated, the microcontroller controls the discharging switch to discharge the energy storage capacitor circuit, so as to electrify the electromagnetic coil 2 of the cutter and drive the cutting blade 3 to move. Since the acceleration time of the cutting blade 3 is short, the control switch needs to have high sensitivity, and the off time needs to be accurately calculated. Preferably, the time taken by the cutting blade 3 from the beginning of the movement to the point of flying near the midpoint of the electromagnetic coil 2 reaches the time at which the discharge current of the storage capacitor circuit is maximum, so that a good cutting movement effect can be achieved.
The voltage detection circuit is used for detecting the voltage of the energy storage capacitor circuit in the charging process, and when the voltage is detected to reach a certain preset value, the microcontroller automatically controls the charging circuit to stop the charging process; when the voltage is detected to be lower than a certain preset value, the microcontroller controls the charging circuit to start charging the energy storage capacitor circuit again, so that the voltage of the energy storage capacitor circuit is maintained at a certain level, and therefore the energy storage capacitor circuit is ensured to store enough electric quantity, and subsequent discharging action is realized.
The microcontroller is used as the core of the whole control circuit, preferably a corresponding single chip microcomputer chip, and realizes good control of the charging circuit, the discharging switch and the like.
Preferably, in the above embodiment, the control circuit is further provided with a reverse charging circuit; the reverse charging circuit is used for completing charging at the energy storage capacitor circuit, and under the condition that the automatic activating device of the backup umbrella is not required to be activated, the reverse charging circuit can be used for reversely charging the energy storage capacitor circuit for the power supply under the control of the microcontroller, so that the electric quantity in the energy storage capacitor circuit is recycled, the energy is saved, the service time of the power supply is prolonged, and the cyclic utilization rate is improved.
Preferably, in the above embodiment, the charging circuit includes a rectifying circuit and an inverter circuit. Because the energy provided by the power supply is low-voltage direct current, the direct current is converted into alternating current by virtue of a corresponding inverter bridge circuit in the prior art, the alternating current is converted into the direct current by virtue of a corresponding rectifier bridge circuit in the prior art, the energy storage capacitor circuit is charged, the electric signal is filtered and stabilized, the fluctuation of voltage is prevented, and the charging effect is improved.
Preferably, in the above embodiment, the energy storage capacitor circuit includes at least one energy storage capacitor. According to actual operation and cost requirements, the energy storage capacitor circuit can select a single energy storage capacitor or select a plurality of energy storage capacitors connected in parallel.
Preferably, in the above embodiment, the energy storage capacitor is a high-voltage high-power energy storage capacitor, so as to achieve a better charging and discharging effect.
The embodiment of the utility model provides a control circuit combines specific components and parts through constructing a plurality of circuit module, has realized production, conversion, transmission and the utilization to control signal, provides stable signal source for external cutterbar, guarantees its working property's stability. In addition, the communication process is reasonable and adjustable through unified processing of the microcontroller, the voltage detection circuit is used in cooperation with the reverse charging circuit, the cyclic utilization rate of the whole automatic activating device of the backup umbrella is guaranteed to be the highest, and the service life is greatly prolonged.
It should be noted that, in practical use, after the airplane is lifted off, the backup umbrella activation device is turned on, at this time, the whole device performs self-checking, the control circuit starts to charge the energy storage capacitor circuit, and simultaneously monitors the capacitor voltage, and when the capacitor voltage reaches a certain preset value (such as V)high) Then, the microcontroller sends out a control signal to automatically stop charging the capacitor; when the voltage of the capacitor is detected to be lower than a preset value (such as V)low) When the voltage of the energy storage capacitor is kept at V all the time, the microcontroller controls the power supply to charge the capacitor againhighAnd VlowThereby the energy storage capacitor can maintain enough electric quantity, and the subsequent cutting blade 3 can obtain enough kinetic energy to cut off the umbrella rope 6 of the backup umbrella.
In the parachutist parachuting descending process, the backup parachute activating device is activated under the condition that a certain preset condition is met, at the moment, the microcontroller controls the energy storage capacitor to discharge instantaneously, the driving coil generates instantaneous large current, so that the ferromagnetic cutting blade 3 is driven in an accelerating mode, a magnetic field is generated after the coil is electrified, the cutting blade 3 is magnetized, meanwhile, the cutting blade 3 can generate an induction magnetic field, the polarities of two different magnetic fields are just opposite, and therefore the cutting blade 3 located at one end of the coil can receive a pulling force in the actual moving process. Because the magnetic field intensity of the magnetic field generated by the coil is different at different positions, the stress is large at the position with dense magnetic force lines, the force applied to one end of the cutting blade 3 close to the coil is obviously larger than that applied to the other end, when the cutting blade moves to a position close to the middle point of the coil, the forces applied to two sides of the cutting blade 3 are balanced, the resultant force applied to the cutting blade 3 is 0, if the cutting blade 3 moves forwards continuously, the acting force pulled back is applied to the cutting blade 3, therefore, the time of passing delta T is calculated (delta T represents the time of the cutting blade 3 moving to the position close to the middle point of the coil), the discharge is stopped immediately under the control of the microcontroller, the reverse pulling force on the cutting blade 3 is avoided, the cutting blade 3 is ensured to obtain enough kinetic energy, the.
In the process of parachuting and descending of a parachutist, if the backup parachute activating device does not meet a certain preset condition, the parachutist is in a normal parachuting state, the backup parachute is not required to be released, the backup parachute activating device is not activated, and therefore the energy storage capacitor in the control circuit cannot discharge electricity, and the cutter cannot act.
After parachuting personnel fall to the ground safely for a period of time, microcontroller in the control circuit detects that energy storage capacitor has stored higher electric energy, and microcontroller charges automatic control energy storage capacitor to power supply this moment to retrieve the electric quantity in the electric capacity, extension power supply's live time.
The embodiment of the utility model provides an umbrella rope cutterbar and control circuit, based on electromagnetism acceleration technique, the magnetic resistance of the magnetic circuit of utilizing electromagnetic coil 2 and ferromagnet to constitute changes and attracts ferromagnet accelerated motion. The ferromagnetic body is mainly placed inside the electromagnetic coil 2, because the ferromagnetic body has a higher magnetic permeability than air, according to the principle of minimum magnetic resistance, the magnetic flux always tends to pass through the path with minimum magnetic resistance, namely, equivalently, because the magnetizing current has the same direction with the current in the electromagnetic coil 2, the ferromagnetic body is acted by ampere force in the driving coil, is accelerated by the attraction force to generate movement, and the power generated by the principle is utilized to realize the cutting action of the umbrella rope. The whole process does not involve chemical changes, is safer and more reliable, and simultaneously the cutting motion process of the cutter can be regulated and controlled, thereby effectively ensuring the life safety of parachutists. More importantly, compared with the traditional cutter based on the explosion principle, the use cost is greatly reduced, and the recycling rate of the cutter is improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. An umbrella cord cutter, comprising: the electromagnetic cutting device comprises a first shell, an electromagnetic coil, a cutting blade and a connecting cable;
the outer side of one end of the first shell is provided with the electromagnetic coil, and the inner side of the first shell is provided with the cutting blade;
the other end of the first shell is provided with a through hole for the umbrella rope to pass through;
the connecting cable is connected with an external control circuit and used for receiving a control signal and sending the control signal to the electromagnetic coil, so that the electromagnetic coil drives the cutting blade to perform corresponding cutting action on the umbrella rope.
2. The parasol cord cutter of claim 1, wherein the cutting blade is made of a ferromagnetic material or a splice material that is strong and oxidation resistant.
3. The parasol cord cutter of claim 1, further comprising a second housing disposed outside said electromagnetic coil for supporting said electromagnetic coil.
4. The parasol cord cutter of claim 1 wherein the other end of the first housing is further provided with a weighted base for receiving the cutting blade.
5. The parasol cord cutter as claimed in claim 1, wherein said electromagnetic coil is provided with a yoke.
6. A control circuit for controlling an umbrella cord cutter, comprising: the device comprises a power supply, a charging circuit, an energy storage capacitor circuit, a discharge switch, a voltage detection circuit and a microcontroller;
the power supply is connected with the charging circuit;
the charging circuit is connected with the energy storage capacitor circuit and is used for charging the energy storage capacitor circuit under the control of the microcontroller;
the energy storage capacitor circuit is connected with the discharge switch and is used for correspondingly controlling an external umbrella rope cutter under the control of the discharge switch;
the discharge switch is connected with the microcontroller;
and the voltage detection circuit is connected with the energy storage capacitor circuit and is used for detecting the energy storage capacitor circuit and sending a detection result to the microcontroller so that the microcontroller adjusts the charging process of the energy storage capacitor circuit according to the detection result.
7. The control circuit of claim 6, further comprising a reverse charging circuit;
and the reverse charging circuit is connected with the energy storage capacitor circuit and is used for reversely charging the power supply under the control of the microcontroller.
8. The control circuit of claim 6, wherein the charging circuit comprises a rectifying circuit and an inverting circuit.
9. The control circuit of claim 6, wherein the storage capacitor circuit comprises at least one storage capacitor.
10. The control circuit of claim 9, wherein the energy storage capacitor is a high voltage high power type energy storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498913.1U CN212243847U (en) | 2019-12-31 | 2019-12-31 | Umbrella rope cutter and control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498913.1U CN212243847U (en) | 2019-12-31 | 2019-12-31 | Umbrella rope cutter and control circuit |
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| CN212243847U true CN212243847U (en) | 2020-12-29 |
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| CN201922498913.1U Active CN212243847U (en) | 2019-12-31 | 2019-12-31 | Umbrella rope cutter and control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022168793A1 (en) * | 2021-02-02 | 2022-08-11 | 株式会社ダイセル | Safety device and flight vehicle |
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2019
- 2019-12-31 CN CN201922498913.1U patent/CN212243847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022168793A1 (en) * | 2021-02-02 | 2022-08-11 | 株式会社ダイセル | Safety device and flight vehicle |
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