CN112361378A - Miniaturized safety mechanism - Google Patents
Miniaturized safety mechanism Download PDFInfo
- Publication number
- CN112361378A CN112361378A CN202011274366.XA CN202011274366A CN112361378A CN 112361378 A CN112361378 A CN 112361378A CN 202011274366 A CN202011274366 A CN 202011274366A CN 112361378 A CN112361378 A CN 112361378A
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- China
- Prior art keywords
- rotating shaft
- safety mechanism
- base body
- channel
- motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Abstract
The invention provides a miniaturized safety mechanism, which comprises a motor, a base body and a rotating shaft, wherein the base body is at least provided with a through fire transfer channel, and two ends of each fire transfer channel are respectively provided with an ignition element and an initiation element; the base body is at least provided with a rotating shaft installation channel which penetrates through the fire transfer channel; the rotating shaft is arranged in the rotating shaft installation channel, a radial through hole is formed in the rotating shaft, the rotating shaft rotates under the driving of a motor, and the rotating shaft through hole is matched with the fire transmission channel to realize the alignment explosion transmission or staggered explosion suppression. The invention does not need structural sealing, and has relatively low requirement on structural strength; the detonating cord is flexibly connected, and the mounting is carried out far away from the solid strength; the structure design is relatively simple, the volume is small, the weight is light, and the installation is flexible.
Description
Technical Field
The invention belongs to the technical field of solid power safe ignition.
Background
The safety mechanism is an important component of the solid power safety ignition device, can ensure the reliability and safety of the solid power work, even if the solid power safety ignition device is subjected to false ignition caused by the interference of environments such as complex electromagnetism, electric fields and the like, the explosive charge of the solid power initiating explosive device cannot be ignited, and the solid power safety ignition device is still safe and cannot generate harm and damage.
Since the early adoption of a large number of manual mechanical safety mechanisms abroad, the updating and development of products have never been stopped, and the safety mechanisms adopted in a large number are basically divided into three types: the first is a universal safety mechanism, which is composed of a rotary electromagnet, an isolating body, a rotary solenoid, a safety pin, a lifting pin, a rotary switch seat and the like, wherein driving power is generated by the rotary solenoid to drive the rotary switch seat of an elastic sheet to rotate so as to complete the conversion of two states of 'safety' and 'ignition', and the safety pin and the lifting pin are used for keeping a certain current state and locking; the second type is a mini type, inherits a plurality of mature technologies of the first safety mechanism, and is subjected to miniaturization design on the basis of the first safety mechanism; the third is that the torque motor drives the rotary switch to complete the two state conversion of 'safety' and 'ignition', the driving command is interrupted, and the locking mechanism keeps the motor in a certain current state.
Several safety mechanisms developed independently in China can be divided into a micro-motor type and an electromagnetic type according to a driving source.
The electromagnetic safety mechanism is formed by an electromagnetic driving mechanism which is communicated with or blocks a gas channel between an electric ignition element and an ignition medicine box to complete the conversion of two states of 'safety' and 'ignition', and mainly comprises an electric ignition pipe seat, a safety component, a locking component, a state indicator, a gas storage chamber and the like.
At present, a micromotor type safety mechanism which is widely applied is suitable for a flame ignition mode, a flame ignition channel is cut off or opened through a motor-driven isolating body, two states of 'safety' and 'ignition' are converted, and an electromagnetic pin is adopted for locking. Because the flame transfer channel should not be too long, lead to the restriction of installation big, the high temperature high pressure gas that flame produced moreover, and the leakproofness requirement to the safety mechanism is very strict, to structural strength requirement height, need have enough big gas storage chamber to guarantee safety when the mistake is fired moreover, above factor leads to the safety mechanism structure complicacy, bulky, the quality is heavy, the installation is inflexible.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a miniaturized safety mechanism, which adopts a detonation propagation ignition mode, utilizes the characteristics of detonation wave energy concentration, linear propagation and the like, does not need structural sealing and has relatively low requirement on structural strength; and the detonating cord is flexibly connected and is installed far away from the solid body. Therefore, the safety mechanism of the invention has the advantages of relatively simple structural design, small volume, light weight and flexible installation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a miniaturized safety mechanism comprises a motor, a base body and a rotating shaft.
The base body is provided with at least one through fire transfer channel, and both ends of each fire transfer channel are respectively provided with an ignition element and an initiation element; the base body is at least provided with a rotating shaft installation channel which penetrates through the fire transfer channel; the rotating shaft is arranged in the rotating shaft installation channel, a radial through hole is formed in the rotating shaft, the rotating shaft rotates under the driving of a motor, and the rotating shaft through hole is matched with the fire transmission channel to realize the alignment explosion transmission or staggered explosion suppression.
And the base body is also provided with a locking mechanism for preventing the rotating shaft from rotating and realizing position locking.
The locking mechanism adopts an electromagnetic pin or a mechanical pin, a limit groove and a locking hole are designed on the excircle of the rotating shaft and correspond to the position of a locking mechanism channel on the base body, and the electromagnetic pin or the mechanical pin penetrates through the locking mechanism channel to limit the rotating shaft to rotate within a set angle range and lock at a set position.
The fire transmission channel adopts two-way redundancy design.
The base body is in clearance fit with the rotating shaft, and a gap between the base body and the rotating shaft is used as an air storage chamber; when the rotating shaft is in the explosion-proof position, a step groove is arranged on the rotating shaft or the base body and is used as an air guide groove to be communicated with one end of an ignition element of the fire transfer channel; when the safety mechanism is in error ignition at a safety position, high-pressure gas generated by shock waves is guided into the gas storage chamber through the gas guide groove and then diffused and released to two ends of the base body along the gas storage chamber.
One end of the rotating shaft is connected with the output shaft of the motor, the other end of the rotating shaft is fixedly connected with the position feedback plate, the position feedback plate and the rotating shaft synchronously rotate, the position feedback plate is provided with a reaction plate, the reaction plate is in contact conduction with the contact at two positions of the fuse and the work to form a loop, and fuse and work state position signals are fed back.
The initiation element adopts a detonating cord.
The position feedback plate base body and the rotating shaft are made of stainless steel materials.
The invention has the beneficial effects that:
1) the explosion wire is flexibly connected, is not limited by the ignition position of the solid power, can be installed far away from the solid power, and is flexible in installation position;
2) the structure is simple, the number of parts is small, the production and assembly processes are few, auxiliary tools are not needed, and the assembly is simple;
3) the structure does not need to be sealed, and the interior of the structure does not need to bear larger load, so that the stress of the structure is small, the thickness of the structure can be reduced, and the safety mechanism has small overall dimension and light weight;
4) the product is installed through 4 screws on the bottom plate, and is tested through the electric connector (socket), so that the interface is simple, the connection is reliable, and the installation and the detection are convenient;
5) the ignition channel and the information feedback adopt a redundant design, so that the reliability is high;
6) the standard parts and structural parts selected by the structural design of the safety mechanism are all made of common stainless steel materials, and have the advantages of good corrosion resistance, low cost, and good manufacturability and economy.
Drawings
Fig. 1 is a schematic diagram of the safety mechanism of the present invention, wherein in-is the electric detonator of the ignition element and out-is the detonating cord of the initiation element.
Fig. 2 is a schematic diagram of the present invention in a half-sectional structure (with input and output removed) in an operating state.
Fig. 3 is a schematic view of an electromagnetic pin.
In the figure, 1-a front cover, 2-a motor, 3-a socket, 4-a front cover, 5-a locking component, 6-a base body, 7-a rotating shaft, 8-a rear cover, 9-a rear cover, 10-a contact, 11-a feedback plate, 12-a base and 13-an electromagnetic pin shaft.
Detailed Description
The present invention will be further described with reference to the following drawings and examples, which include, but are not limited to, the following examples.
The safety mechanism designed by the invention is suitable for an ignition mode adopting detonation propagation, the isolation and the connection of an ignition passage are realized by adopting a mode that the motor drives the rotating shaft to rotate, and the safety mechanism is positioned at a safety position and locked at ordinary times to ensure the isolation of the ignition passage. When the safety mechanism works, the safety mechanism is powered on firstly, the safety state is confirmed through the feedback signal, when the state conversion is needed, the power is supplied in the forward direction, the motor drives the rotating shaft to rotate in the forward direction, the ignition passage is aligned and communicated, the safety mechanism is locked in the working state, and the working position signal is fed back; and reverse power supply is performed, the motor drives the rotating shaft to rotate reversely, the ignition passage is staggered and separated, the safety mechanism is locked in a safety state, and a safety position signal is fed back.
The safety mechanism is shown in figure 1 in appearance and in figure 2 in structure, and mainly comprises a motor, a base body, a rotating shaft, a plunger, a spring, a front cover, a rear cover, a position feedback plate, a contact and the like.
The base body is provided with a fire transfer channel, the fire transfer channel adopts two-way redundancy design, the input end is provided with an ignition element electric detonator, the output end is provided with an initiation element detonating fuse, and any one way of fire transfer channel can reliably ignite when working normally. A rotating shaft installation channel is designed in the middle of the base body, and a gap is reserved between the base body and the rotating shaft and can be used as an air storage chamber. A locking mechanism mounting channel is designed at the front end of the base body, the locking mechanism is composed of a spring, a plunger and a jacking screw, and when the state is switched in place, the rotating shaft can be prevented from rotating, so that position locking is realized.
The rotating shaft is provided with a through hole corresponding to the fire transmission channel on the base body, so that the alignment explosion transmission or staggered explosion suppression can be realized, the step groove is arranged at the explosion suppression position and serves as an air guide groove, and when the safety mechanism is ignited by mistake at the safety position, high-pressure gas generated by shock waves can be guided into an air storage chamber formed between the base body and the rotating shaft through the air guide groove and then is diffused and released to two ends of the safety mechanism. One end of the rotating shaft is provided with a connecting channel connected with the output shaft of the motor, the other end of the rotating shaft is provided with a connecting hole connected with the position feedback plate, and the position feedback plate and the rotating shaft are installed on the rotating shaft to rotate synchronously. The excircle at the front end of the rotating shaft is provided with a limiting groove and a locking hole, the limiting groove corresponds to the channel position of the locking mechanism on the base body, the rotating shaft is limited to rotate within a set angle range, and the rotating shaft can be locked at a set position.
A microminiature direct-current torque motor is adopted to provide driving force to drive the rotating shaft to rotate, the working voltage and the rotating speed of the motor are selected according to the design requirements of the safety mechanism, and the rated torque and the locked-rotor torque are determined according to the rated load and the maximum load of the safety mechanism.
The position feedback plate is provided with a reaction plate which is in contact conduction with the contact at two positions of insurance and work to form a loop for feeding back insurance and work state position signals. And the reliability is improved by adopting a redundancy design, and any path can reliably feed back signals when working normally.
The front cover and the rear cover are respectively arranged on the front end face and the rear end face of the base body, the motor is arranged on the front cover, the base body and the motor have matching precision requirements, the coaxiality of the front cover, the base body and the motor after assembly is guaranteed, and the rear cover provides an installation supporting plane for the contact. The front cover and the rear cover are respectively arranged on the front cover and the rear cover, the front cover and the rear cover protect cables inside the safety mechanism body and maintain a complete and closed appearance, high-pressure gas transmitted can be evacuated in the inner space, and the bearing pressure of the structure is reduced.
Examples 1
The rotating shaft 7 is provided with a through hole and an air guide groove, and the through hole and the air guide groove are matched with a fire transfer channel on the base body for use, so that the explosion transfer can be aligned or staggered. The output shaft of the motor 2 drives the rotating shaft to rotate together within the range of 90 degrees of the set angle. The rotating shaft 7 and the substrate 6 are in clearance fit, the clearance is 0.5 mm-1.0 mm, and step grooves are arranged at corresponding positions of the rotating shaft and the substrate to form gas storage grooves, so that high-pressure gas can be diffused.
The front cover 4 and the rear cover 8 are respectively connected with the base body 6 through screws. The front cover 1 and the rear cover 9 are respectively connected with the front cover 4 and the rear cover 8 through threads.
The feedback board 11 has a reaction plate, and contacts and conducts with the contact 10 installed on the back cover 8 through an insulation board at two positions of fuse and work to form a loop, and respectively feeds back fuse and work state position signals. The rear cover 8 is provided with a safety and working state position observation hole.
The motor 2 is a microminiature direct current torque motor, the working voltage is 28V, the rated rotating speed is 80r/min, the short-time locked rotation can be realized when the motor is rotated to a set angle of 90 degrees, the locked rotation torque is 2N.M, and the state conversion can be completed by the safety mechanism within 1 s. The motor is electrified to drive the rotating shaft to rotate, and the rated rotating speed can be achieved after the locking force (maximum 12N) is overcome. Under the condition of no electric force, the locking mechanism can be used for locking in any position of the safety and work.
The base 12 is a mounting base plate of the safety mechanism and is mounted at a proper position of the solid power by 4 screws.
The safety mechanism is electrically connected to the controller through the socket 3.
The overall dimension of the safety mechanism main body is mm: 150X 48X 45, weight 1.4 kg.
EXAMPLES example 2
On the basis of example 1, a signal feedback design is added on the motor, a position feedback part formed by a position feedback plate and a contact is removed, a rear cover and a rear cover are combined into a whole, and other structures are not changed. When the state conversion is needed, the motor is powered on to complete the state conversion, the motor is locked and rotates and feeds back a position state signal, and the motor is powered off. When the motor is reversely switched, the motor is electrified reversely to complete state switching, the motor is locked and rotates and feeds back position state signals, and the motor is powered off. The cost of the motor increases with this solution.
The overall dimension of the safety mechanism main body is mm: 130X 48X 45, weight 1.3 kg.
EXAMPLE 3
On the basis of the example 1, an electromagnetic pin can be used as a locking device instead of the locking assembly 5 according to the requirement, and other structures are unchanged. When the state conversion is needed, the electromagnetic pin shaft 13 is firstly retracted by electrifying, after the state conversion is completed, the electromagnetic pin shaft 13 falls down to lock the position, and the maximum stroke of the electromagnetic pin is 4 mm. This solution increases the cost of the electromagnetic pin.
The overall dimension of the safety mechanism main body is mm: 150X 48X 52, weight 1.3 kg.
Claims (8)
1. A miniaturized safety mechanism comprises a motor, a base body and a rotating shaft, and is characterized in that the base body is provided with at least one through fire transmission channel, and two ends of each fire transmission channel are respectively provided with an ignition element and an initiation element; the base body is at least provided with a rotating shaft installation channel which penetrates through the fire transfer channel; the rotating shaft is arranged in the rotating shaft installation channel, a radial through hole is formed in the rotating shaft, the rotating shaft rotates under the driving of a motor, and the rotating shaft through hole is matched with the fire transmission channel to realize the alignment explosion transmission or staggered explosion suppression.
2. The miniaturized safety mechanism of claim 1 further comprising a locking mechanism mounted to the base for preventing rotation of the shaft to lock the shaft in position.
3. The miniaturized safety mechanism according to claim 2, wherein the locking mechanism is an electromagnetic pin or a mechanical pin, a limiting groove and a locking hole are designed on the outer circle of the rotating shaft and correspond to the position of the locking mechanism channel on the base body, and the electromagnetic pin or the mechanical pin penetrates through the locking mechanism channel to limit the rotating shaft to rotate within a set angle range and lock at a set position.
4. The miniaturized safety mechanism of claim 1 wherein the firing channels are of a two-way redundant design.
5. The miniaturized safety mechanism of claim 1 wherein the base and the shaft are in clearance fit, and a space between the base and the shaft serves as an air reservoir; when the rotating shaft is in the explosion-proof position, a step groove is arranged on the rotating shaft or the base body and is used as an air guide groove to be communicated with one end of an ignition element of the fire transfer channel; when the safety mechanism is in error ignition at a safety position, high-pressure gas generated by shock waves is guided into the gas storage chamber through the gas guide groove and then diffused and released to two ends of the base body along the gas storage chamber.
6. The miniaturized safety mechanism according to claim 1, wherein one end of the rotating shaft is connected with the output shaft of the motor, the other end of the rotating shaft is fixedly connected with a position feedback plate, the position feedback plate and the rotating shaft rotate synchronously, a reaction plate is designed on the position feedback plate, and the reaction plate is in contact conduction with the contact at two positions of the fuse and the work to form a loop, and fuse and work state position signals are fed back.
7. The miniaturized safety mechanism of claim 1 wherein the initiation element comprises a detonating cord.
8. The miniaturized safety mechanism of claim 1 wherein the position feedback plate base and the shaft are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011274366.XA CN112361378A (en) | 2020-11-15 | 2020-11-15 | Miniaturized safety mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011274366.XA CN112361378A (en) | 2020-11-15 | 2020-11-15 | Miniaturized safety mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN112361378A true CN112361378A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011274366.XA Pending CN112361378A (en) | 2020-11-15 | 2020-11-15 | Miniaturized safety mechanism |
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| Country | Link |
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| CN (1) | CN112361378A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450541Y (en) * | 2000-11-15 | 2001-09-26 | 中国兵器工业第二一三研究所 | Impact wave type igniting implement |
| WO2007062467A1 (en) * | 2005-11-30 | 2007-06-07 | Orica Explosives Technology Pty Ltd | A voice controlled blasting system |
| CN202253753U (en) * | 2011-09-16 | 2012-05-30 | 安徽省皖淮机械厂 | Novel ignition device in smoke pot |
| CN210568433U (en) * | 2019-07-04 | 2020-05-19 | 山西华仕低碳技术研究院有限公司 | Deflagration generator |
-
2020
- 2020-11-15 CN CN202011274366.XA patent/CN112361378A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450541Y (en) * | 2000-11-15 | 2001-09-26 | 中国兵器工业第二一三研究所 | Impact wave type igniting implement |
| WO2007062467A1 (en) * | 2005-11-30 | 2007-06-07 | Orica Explosives Technology Pty Ltd | A voice controlled blasting system |
| CN202253753U (en) * | 2011-09-16 | 2012-05-30 | 安徽省皖淮机械厂 | Novel ignition device in smoke pot |
| CN210568433U (en) * | 2019-07-04 | 2020-05-19 | 山西华仕低碳技术研究院有限公司 | Deflagration generator |
Non-Patent Citations (1)
| Title |
|---|
| 张超: "《一种非电传爆安全点火装置研究》", 《一种非电传爆安全点火装置研究》 * |
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Application publication date: 20210212 |
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