CN110736399A - Pressure-reducing blasting device and using method thereof - Google Patents

Pressure-reducing blasting device and using method thereof Download PDF

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Publication number
CN110736399A
CN110736399A CN201911109012.7A CN201911109012A CN110736399A CN 110736399 A CN110736399 A CN 110736399A CN 201911109012 A CN201911109012 A CN 201911109012A CN 110736399 A CN110736399 A CN 110736399A
Authority
CN
China
Prior art keywords
throat
hook
air spring
cylinder
reset cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911109012.7A
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Chinese (zh)
Inventor
陈琦
徐晓辉
张延顺
董德胜
李卓慧
冯智猛
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SHANGHAI YUDA INDUSTRIAL Co Ltd
Original Assignee
SHANGHAI YUDA INDUSTRIAL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI YUDA INDUSTRIAL Co Ltd filed Critical SHANGHAI YUDA INDUSTRIAL Co Ltd
Priority to CN201911109012.7A priority Critical patent/CN110736399A/en
Publication of CN110736399A publication Critical patent/CN110736399A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42DBLASTING
    • F42D1/00Blasting methods or apparatus, e.g. loading or tamping

Abstract

The invention provides decompression blasting devices and a using method thereof, and the decompression blasting devices comprise a throat component, a throat , an air spring mounting seat, an air spring, an air cylinder backup plate, a reset air cylinder, a hook claw and a throat lock, wherein the throat component is connected with a throat and locked through a throat lock, the air spring mounting seat is arranged on the throat component, the fixed end of the air spring is connected with the air spring mounting seat, the movable end of the air spring is connected with the throat , the reset air cylinder is arranged on the throat component, the hook claw is arranged on a piston rod of the reset air cylinder, and the air cylinder backup plate is arranged on the throat component and supports the reset air cylinder.

Description

Pressure-reducing blasting device and using method thereof
Technical Field
The invention relates to the technical field of pressure reduction, in particular to types of pressure reduction blasting devices and a using method thereof, particularly types of quick pressure reduction blasting devices and a using method thereof, and is particularly suitable for devices or equipment which need repeated operation, quick pressure reduction and adjustable speed.
Background
In the existing experiment of the pressure reducing blasting device, is provided with two cabin bodies, the cabin body with higher pressure before blasting is called a test cabin, the cabin body with lower gas pressure outside the test cabin is called a negative pressure storage cabin, and the pressure reducing blasting device is main equipment and a middle channel for isolating the test cabin with different pressures and the negative pressure storage cabin.
Patent document CN102890004A proposes mechanical decompression blasting device driven by air cylinder, wherein two sides of throat are respectively connected to high speed air cylinder through hinges, high pressure air is filled in the air cylinder to push the piston rod of the air cylinder to extend, so as to drive throat 0 to rotate, so as to open throat , thereby realizing decompression blasting, although the method can realize rapid opening of throat , the opening speed is limited by the extension speed of the piston rod of the air cylinder, because of the friction between the piston rod piston and the wall of the air cylinder, the limit extension speed of the piston rod of the high speed air cylinder is 2-2.5m/s, and the piston rod has acceleration time, so there are upper limit values for the opening speed of throat , in addition , is hard to act on throat by the air cylinder at the same time, and the air has compressibility, so that the synchronism of the air cylinder is ensured, and the reliability of the system is not high.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide types of pressure reduction blasting devices and using methods thereof.
The kinds of decompression blasting devices provided by the invention comprise a throat component, a throat , an air spring mounting seat, an air spring, an air cylinder backup plate, a reset air cylinder, a hook claw and a throat lock, wherein the throat component is connected with the throat and locked through the throat lock, the air spring mounting seat is arranged on the throat component, the fixed end of the air spring is connected with the air spring mounting seat, the movable end of the air spring is connected with the throat , the reset air cylinder is arranged on the throat component, the hook claw is arranged on a piston rod of the reset air cylinder, and the air cylinder backup plate is arranged on the throat component and supports the reset air cylinder.
Preferably, the throat assembly is provided with a slope opening, a hinge is arranged at the slope opening, the throat end is connected with the throat assembly through the hinge, and the throat and the other end are connected with the throat assembly through the throat in a locking and sealing mode.
Preferably, the two ends of the throat assembly opening are respectively provided with a throat lock.
Preferably, air spring mounting seats are arranged on two sides of the throat component, and the fixed ends of the air springs are mounted on the air spring mounting seats through adapter plates;
the both sides of larynx all are provided with the amortization backup pad, and air spring expansion end and amortization backup pad laminating.
Preferably, the air spring is of a multi-section bag type structure, the working height of the air spring is adjusted according to the air inflation amount of the inner space, and the obtaining time of the working height of the air spring is adjusted through the air inflation rate.
Preferably, the two sides of the throat component are both provided with reset cylinders, and the reset cylinders are hinged with the throat component.
Preferably, the hook comprises a hook body, a hook head and a torsion spring, the end of the hook body is connected with a piston rod of the reset cylinder, the other end of the hook body is connected with the hook head through the torsion spring, and the other end of the hook body is a hook-shaped groove;
convex shafts which are matched and connected with the hooks are arranged on two sides of the throat .
Preferably, an angle adjusting device is arranged below the cylinder backup plate, a spring and a rubber pad are arranged on the angle adjusting device, and the angle adjusting device can adjust the angle of the cylinder backup plate.
Preferably, a control system is further included, and the control system is connected with the air spring, the reset cylinder and the throat lock.
According to the application method of the kinds of decompression blasting devices, the decompression blasting device is adopted, and the method comprises the following steps:
step 1, a control system sends a signal to unlock a throat lock and sends a signal to inflate an air spring, two end faces of the air spring are bounced off due to internal inflation, the throat is pushed to rotate, and the air spring is separated from the throat to realize blasting;
step 2, after blasting, the control system sends a signal to extend a piston rod of the reset cylinder, and when a hook head of a hook claw connected with the piston rod touches convex shafts on two sides of the throat , the hook head rotates under the action of the convex shafts, so that the hook claw moves forwards under the constraint of the obstacle of the convex shafts;
and step 3: when the hook claw is separated from the convex shaft, the hook head automatically resets under the action of the torsion spring; at the moment, the control system sends a signal to withdraw the piston rod of the reset cylinder;
step 4, when the piston rod of the reset cylinder is recovered, the hook head hooks the convex shaft, the convex shaft moves towards the hook-shaped groove of the hook claw body along the contact surface of the convex shaft and the hook head, after the convex shaft enters the hook-shaped groove of the hook claw body, the throat rotates along with the recovery of the piston rod of the reset cylinder, and the reset cylinder is taken away from the cylinder backup plate;
and 5, after the reset cylinder carries the throat to complete reset, the control system sends a signal to lock the throat :
step 6: the control system sends a signal to extend the piston rod of the reset cylinder again, the hook claw is separated from the convex shaft, and the reset cylinder falls on the cylinder backup plate due to self weight;
and 7: the control system sends a signal to withdraw the piston rod of the reset cylinder again, and the operation track of the protruding shaft during blasting is avoided.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has simple and reasonable structure, adopts the air spring to replace the traditional high-speed cylinder, breaks through the bottleneck of the fastest speed of the high-speed cylinder, and leads the opening speed of the throat of the decompression blasting device to be improved by steps.
2. The air spring is not mechanically connected with the throat , and the requirement on the air spring inflation synchronism is lower than that of a traditional high-speed air cylinder, so that the reliability of the decompression blasting device blasting is improved.
3. By arranging the reset device, repeated blasting operation can be realized, and pressure can be quickly reduced.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic structural view of the finger of the present invention.
Fig. 4 is a schematic view of the installation relationship between the cylinder backup plate, the reset cylinder and the angle adjusting device.
Fig. 5 is a schematic diagram of the state change during the use of the present invention, and the line in the diagram is the initial state during the use.
The figures show that:
1-throat assembly 8-throat lock
2-throat 9-convex shaft
3-air spring mounting seat 10-hinge
4-air spring 11-reset cylinder piston rod
5-cylinder backup plate 12-hook
6-reset cylinder 13-torsion spring
7-claw 14-angle adjusting device
Detailed Description
The present invention is described in detail below with reference to specific examples which will assist those skilled in the art to further the present invention, but not to limit the invention in any way.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In addition, , the air spring 4 is not mechanically connected with the throat , the throat is separated after being opened, and high synchronism is not needed, so that the reliability of the device is improved.
According to the types of decompression blasting devices provided by the invention, as shown in fig. 1-4, the decompression blasting device comprises a throat component 1, a throat , an air spring mounting seat 3, an air spring 4, an air cylinder backup plate 5, a reset air cylinder 6, a hook claw 7 and a throat 0 lock 8, wherein the throat component 1 is connected with the throat and locked by a throat lock 8, the air spring mounting seat 3 is arranged on the throat component 1, the fixed end of the air spring 4 is connected with the air spring mounting seat 3, the movable end of the air spring 4 is connected with a throat , the reset air cylinder 6 is arranged on the throat component 1, the piston rod of the reset air cylinder 6 is provided with the hook claw 7, the air cylinder backup plate 635 is arranged on the throat component 1 and supports the reset air cylinder 6, the throat component 1 is provided with an oblique 45-degree opening, the opening is provided with a hinge 10, the end 8972 is connected with the throat component 1 through the hinge 10, the other end of the throat 36963 is connected with the throat component 1 through the air spring 10, the air spring component 1, the throat is connected with a throat component 1 through a throat component 8, the air spring backup plate through a throttle hook claw 6, the air spring backup plate is connected with a throttle seat 636, the air spring 6, the throttle seat is connected with the throttle seat, the throttle seat 6, the throttle seat is connected with a throttle seat, the throttle seat is connected with the throttle seat, the throttle seat is connected with the throttle seat, the throttle seat is connected with the throttle seat, the throttle seat is connected.
The air spring 4 is fixed on the throat assembly 1 through an air spring mounting seat 3, the movable end of the air spring 4 is in contact with a throat to provide power for opening the throat , the reset cylinder 6 is used for recovering an opened throat 02 to an initial position of the throat , and the throat has a re-opening function, the working height of the air spring 4 can be adjusted according to the inflation amount of an inner space, the obtaining time of the working height can be adjusted through an inflation rate, the throat 2 is used for locking the throat and preventing the throat 2 from falling down, the throat is locked 8 through a control system (an electric control mechanism), the throat 582 is unlocked, a piston rod of the reset cylinder 6 is connected with a hook claw 7 and can hook and recover a convex shaft 9 on the throat 2 and return the throat to the initial position, the hook claw 7 comprises a hook claw body, a hook head 12 and a torsion spring 13, the hook claw 12 is capable of rotating under the action of the convex shaft 9 after contacting the convex shaft 9, the hook claw 12 can automatically reset cylinder is separated from the convex shaft 9, the reset cylinder 6 can automatically reset cylinder and the hook claw 12 can provide a damping device for adjusting the explosion when the explosion of the explosion and the explosion groove, the explosion groove and the explosion groove 14 is provided for adjusting device, and the explosion groove, the expansion angle of the explosion groove, the adjustable expansion adjusting device is provided for adjusting device, the explosion groove 366, the explosion groove, the adjustable explosion groove is provided for adjusting device, the adjustable explosion groove, the.
Preferably, when the decompression blasting device is used, the throat is unlocked by an electric control, the air spring 4 is filled with high-pressure nitrogen, the internal volume of the air spring 4 is increased, the movable end of the air spring obtains kinetic energy of outward movement to push the throat 2 to rotate, the throat rotates for a fixed angle and is separated from the air spring 4, the throat is opened, when the throat is reset, the actuates the reset cylinder 6, the claw 7 at the head of the piston rod 11 can hook the protruding shaft 9 at two sides of the throat 2, the throat 2 is pulled back to the initial position, when the reset cylinder 6 returns, the track of the head of the piston rod 11 is the same as the protruding shaft 9, the reset cylinder 6 rotates and is separated from the cylinder backing plate 5, the throat resets and is locked, the piston rod 11 of the reset cylinder 6 extends again, the claw 7 at the head is separated from the protruding shaft 9, the reset cylinder 6 rotates under the action of gravity, the piston rod 6 falls back onto the cylinder backing plate 5, the piston rod 11 retracts, the piston rod 7 leaves the protruding shaft 9, the hook 7 of the throat 469 and is separated from the protruding shaft 9, the reset cylinder 6 is provided with a buffer adjusting cylinder 12, the reset cylinder 12, the reset cylinder 6, the reset cylinder 7 is provided with a reset cylinder 12, the reset cylinder 12, the reset cylinder 6, the reset cylinder 12, the reset cylinder is provided with a reset cylinder, the reset cylinder 12, the reset cylinder 6, the reset cylinder 12, the reset cylinder is provided with a reset cylinder, the reset cylinder.
As shown in fig. 5, the method for using a reduced pressure blasting apparatus according to the present invention includes the following steps:
step 1, a control system sends a signal to unlock a throat lock 8 and sends a signal to inflate an air spring 4, two end faces of the air spring 4 are bounced off due to internal inflation, the throat 2 is pushed to rotate, and the air spring 4 is separated from the throat 2 to realize blasting;
step 2, after blasting, the control system sends a signal to extend a piston rod of the reset cylinder 6, and when a hook head 12 of a hook claw 7 connected with the piston rod touches convex shafts 9 on two sides of the throat 2, the hook head 12 rotates under the action of the convex shafts 9, so that the hook claw 7 moves forwards by being separated from the obstacle constraint of the convex shafts 9;
and step 3: when the hook claw 7 is separated from the convex shaft 9, the hook head 12 automatically resets under the action of the torsion spring 13; at this time, the control system sends a signal to withdraw the piston rod of the reset cylinder 6;
step 4, when the piston rod of the reset cylinder 6 is retracted, the hook head 12 hooks the convex shaft 9, the convex shaft 9 moves towards the hook-shaped groove of the hook claw body along the contact surface with the hook head 12, after the convex shaft 9 enters the hook-shaped groove of the hook claw body, the throat 2 rotates along with the retraction of the piston rod of the reset cylinder 6, and the reset cylinder 6 is taken away from the cylinder backup plate 5;
and 5, after the reset cylinder 6 carries the throat 2 to complete reset, the control system sends a signal to lock the throat lock 8:
step 6: the control system sends a signal to extend the piston rod of the reset cylinder 6 again, the hook claw 7 is separated from the convex shaft 9, and the reset cylinder 6 falls on the cylinder backup plate 5 due to self weight;
and 7: the control system sends a signal to withdraw the piston rod of the reset cylinder 6 again to avoid the running track of the convex shaft 9 during blasting.
One skilled in the art will appreciate that, in addition to the system, apparatus, and modules thereof provided by the present invention being implemented as computer-readable program code, the system, apparatus, and modules thereof provided by the present invention can be implemented by fully programming the method steps to implement the same in the form of logic , switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. accordingly, the system, apparatus, and modules thereof provided by the present invention can be considered as hardware components, and the modules included therein for implementing the various programs can also be considered as structures within the hardware components, or the modules used for implementing the various functions can be considered as both software programs implementing the methods and structures within the hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

  1. The utility model provides a kind of decompression blasting device, its characterized in that, including throat subassembly (1), larynx (2), air spring mount pad (3), air spring (4), cylinder backup plate (5), reset cylinder (6), knuckle (7), larynx lock (8), throat (2) are connected and are locked through larynx lock (8) to throat subassembly (1), and air spring mount pad (3) set up on throat subassembly (1), and air spring mount pad (3) are connected to air spring (4) stiff end, and throat (2) are connected to air spring (4) expansion end, and reset cylinder (6) set up on throat subassembly (1), are provided with knuckle (7) on the piston rod of reset cylinder (6), and cylinder backup plate (5) set up on throat subassembly (1) and support reset cylinder (6).
  2. 2. A decompression blasting device according to claim 1, characterized in that the throat assembly (1) is provided with an oblique 45 degree opening, a hinge (10) is provided at the opening, the throat (2) end is connected with the throat assembly (1) through the hinge (10), and the other end of the throat (2) is hermetically connected with the throat assembly (1) through a throat lock (8).
  3. 3. A reduced pressure blasting apparatus according to claim 1, wherein the throat assembly (1) is provided with a throat lock (8) at each end of its opening.
  4. 4. The decompression and explosion device according to claim 1, wherein air spring mounting seats (3) are arranged on two sides of the throat assembly (1), and the fixed ends of the air springs (4) are mounted on the air spring mounting seats (3) through adapter plates;
    the two sides of the throat (2) are both provided with a silencing backup plate, and the movable end of the air spring (4) is attached to the silencing backup plate.
  5. 5. The decompression and explosion device according to claim 1, wherein the air spring (4) is of a multi-section bag type structure, the working height of the air spring (4) is adjusted according to the inflation amount of the inner space, and the obtaining time of the working height of the air spring (4) is adjusted through the inflation rate.
  6. 6. A decompression blasting device according to claim 1, characterized in that the throat assembly (1) is provided with a reset cylinder (6) on both sides, and the reset cylinder (6) is hinged to the throat assembly (1).
  7. 7. The decompression blasting device according to claim 1, wherein the hook (7) comprises a hook body connected to the piston rod of the reset cylinder (6), a hook head (12) connected to the other end of the hook body via the torsion spring (13) to the hook head (12), and a torsion spring (13), and the other end of the hook body is a hook-shaped groove;
    and convex shafts (9) which are matched and connected with the hook claws (7) are arranged on two sides of the throat (2).
  8. 8. A decompression blasting device according to claim 1, characterized in that an angle adjusting device (14) is arranged below the cylinder backup plate (5), a spring and a rubber pad are arranged on the angle adjusting device (14), and the angle adjusting device (14) can adjust the angle of the cylinder backup plate (5).
  9. 9. A decompression bursting device according to claim 1 further comprising a control system connected to the air spring (4), reset cylinder (6) and throat lock (8).
  10. A method of using a reduced pressure explosion apparatus of , wherein the reduced pressure explosion apparatus of any one of claims 1-9 through is used, and comprises the steps of:
    step 1, a control system sends a signal to unlock a throat lock (8) and sends a signal to inflate an air spring (4), two end faces of the air spring (4) are bounced off due to internal inflation to push a throat (2) to rotate, and the air spring (4) is separated from the throat (2) to realize blasting;
    step 2, after blasting, the control system sends a signal to extend a piston rod of the reset cylinder (6), and when a hook head (12) of a hook claw (7) connected with the piston rod touches convex shafts (9) on two sides of the throat (2), the hook head (12) rotates under the action of the convex shafts (9), so that the hook claw (7) moves forwards under the condition of being separated from the obstacle constraint of the convex shafts (9);
    and step 3: when the hook claw (7) is separated from the convex shaft (9), the hook head (12) automatically resets under the action of the torsion spring (13); at the moment, the control system sends a signal to withdraw the piston rod of the reset cylinder (6);
    step 4, when the piston rod of the reset cylinder (6) is retracted, the hook head (12) hooks the convex shaft (9), the convex shaft (9) moves towards the hook-shaped groove of the hook claw body along the contact surface of the convex shaft (12) and the hook-shaped groove of the hook claw body, after the convex shaft (9) enters the hook-shaped groove of the hook claw body, the throat (2) rotates along with the retraction of the piston rod of the reset cylinder (6), and the reset cylinder (6) is taken away from the cylinder backup plate (5);
    and 5, after the reset cylinder (6) carries the throat (2) to complete reset, the control system sends a signal to lock the throat lock (8):
    step 6: the control system sends a signal to extend the piston rod of the reset cylinder (6) again, the hook claw (7) is separated from the convex shaft (9), and the reset cylinder (6) falls on the cylinder backup plate (5) due to self weight;
    and 7: the control system sends a signal to withdraw the piston rod of the reset cylinder (6) again to avoid the running track of the protruding shaft (9) during blasting.
CN201911109012.7A 2019-11-13 2019-11-13 Pressure-reducing blasting device and using method thereof Pending CN110736399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911109012.7A CN110736399A (en) 2019-11-13 2019-11-13 Pressure-reducing blasting device and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911109012.7A CN110736399A (en) 2019-11-13 2019-11-13 Pressure-reducing blasting device and using method thereof

Publications (1)

Publication Number Publication Date
CN110736399A true CN110736399A (en) 2020-01-31

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003336915A (en) * 2002-05-20 2003-11-28 Nippon Soken Inc Ejector type decompression device
CN102890004A (en) * 2012-09-27 2013-01-23 中国人民解放军空军航空医学研究所 Decompressing blast device
CN103657523A (en) * 2013-12-12 2014-03-26 贵阳鑫博士工程技术有限公司 Low-pressure chamber connection throat structure
CN204575355U (en) * 2015-02-16 2015-08-19 广州五所环境仪器有限公司 A kind of vacuum simulation test device with reduction of blood pressure in high-speed and explosive decompression function
CN108501851A (en) * 2018-05-10 2018-09-07 淮安市江淮信息科技有限公司 Equip the car of full-automatic emergency exits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003336915A (en) * 2002-05-20 2003-11-28 Nippon Soken Inc Ejector type decompression device
CN102890004A (en) * 2012-09-27 2013-01-23 中国人民解放军空军航空医学研究所 Decompressing blast device
CN103657523A (en) * 2013-12-12 2014-03-26 贵阳鑫博士工程技术有限公司 Low-pressure chamber connection throat structure
CN204575355U (en) * 2015-02-16 2015-08-19 广州五所环境仪器有限公司 A kind of vacuum simulation test device with reduction of blood pressure in high-speed and explosive decompression function
CN108501851A (en) * 2018-05-10 2018-09-07 淮安市江淮信息科技有限公司 Equip the car of full-automatic emergency exits

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FIRESTONE: "Airstroke Airmount - Air Springs", 《WWW.FIRESTONEIP.COM》 *
肖华军: "《航空供氧防护装备应用生理学》", 31 January 2015 *

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