CN109900179A - A kind of municipal administration transformation aging blocks blasting protection equipment and application method - Google Patents

A kind of municipal administration transformation aging blocks blasting protection equipment and application method Download PDF

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Publication number
CN109900179A
CN109900179A CN201910156354.8A CN201910156354A CN109900179A CN 109900179 A CN109900179 A CN 109900179A CN 201910156354 A CN201910156354 A CN 201910156354A CN 109900179 A CN109900179 A CN 109900179A
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CN
China
Prior art keywords
baffle
sliding slot
fixed plate
municipal administration
protection equipment
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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
CN201910156354.8A
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Chinese (zh)
Inventor
黄超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Qian Ao Construction Engineering Co Ltd
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Hubei Qian Ao Construction Engineering 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.)
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Publication date
Application filed by Hubei Qian Ao Construction Engineering Co Ltd filed Critical Hubei Qian Ao Construction Engineering Co Ltd
Priority to CN201910156354.8A priority Critical patent/CN109900179A/en
Publication of CN109900179A publication Critical patent/CN109900179A/en
Pending legal-status Critical Current

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Abstract

A kind of municipal administration transformation aging blocks blasting protection equipment and application method, including fixed plate, baffle, the fixed plate is equipped with mounting groove and limiting through hole, the left and right ends of baffle are slidably mounted in mounting groove, baffle is equipped with filter screen, baffle is connect by multiple springs with backing plate, the inner wall of backing plate and mounting groove completely attaches to, the bottom of fixed plate is equipped with fixed block, fixed block is connect by the first pin shaft with sliding slot, support rod is provided in sliding slot, sliding slot is equipped with multiple limit holes, one end of support rod passes through fixing bolt and limit hole detachable connection, the other end of support rod is hinged by the second pin shaft and supporting block, supporting block is agreed with limiting through hole.Using the above structure, it realizes and effectively intercepts slungshot, reduce noise, reasonable water conservancy diversion flue dust and pernicious gas, and whole device and arrangement is facilitated to store, using simple, the range for adapting to burst strength is wide.

Description

A kind of municipal administration transformation aging blocks blasting protection equipment and application method
Technical field
The present invention relates to municipal reforming equipment field, especially a kind of municipal administration transformation aging blocks blasting protection equipment and user Method.
Background technique
Municipal administration transformation is transformed old city, especially exists in a variety of ways using the fund from public, private financial resources In terms of entity, including building new building, Old building repairing and reusing or change is used it for anything else, neighbourhood's protection, history protection And infrastructure etc. is improved, and with greater need for establishing oneself individual style when urban renewal, on the basis of keeping original style and features, Enhance the understanding and perception to urban renewal, and combine art and aesthetics, is dissolved into adaptation to local conditions in building, ability The novel new building for being grounded gas again is transformed out, forms a kind of new architectural culture, generates concentration effect.For aging blocks, high tower etc. The means for often using demolition blasting, before demolition blasting, need to evacuate the resident of surrounding, establish reasonable buffer zone, keep away The lives and properties for exempting from resident come to harm, but many slungshots, great noise, cigarette can be still generated during demolition blasting Dirt and pernicious gas there are also existing safeguard procedures intensity deficiency or are difficult to the case where arranging, and there is no quick-fried well now Broken protective device carries out the protection of science to demolition blasting.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of municipal administrations, and aging blocks blasting protection equipment and application method is transformed, By buffering suface, through-hole, buffer spring and auxiliary support structure, the impact of demolition blasting in municipal administration transformation is effectively reduced Power improves the stability of whole device protection explosion;The harm of slungshot in explosion has effectively been intercepted by filter screen structure;It is logical The composite structure of dustcloth, position limiting structure, elastic string and torsionspring is crossed, not only ensure that dustcloth tolerance demolition blasting generates Flue dust is more oriented to by dustcloth by the impulse force of impact air-flow, facilitates processing, avoids the pollution to air;Pass through sound-absorbing pad It helps to reduce the noise in blasting process, avoids that surrounding resident is caused excessively to injure;Whole device facilitates installation, uses step Simply, it is easier to which disassembly stacks, convenient for storage transhipment.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of municipal administration transformation aging blocks blasting protection Equipment and application method, including fixed plate, baffle, the fixed plate are equipped with mounting groove and limiting through hole, the left and right of baffle Both ends are slidably mounted in mounting groove, and baffle is equipped with filter screen, and baffle is connect by multiple springs with backing plate, backing plate and peace The inner wall of tankage completely attaches to, and the bottom of fixed plate is equipped with fixed block, and fixed block is connect by the first pin shaft with sliding slot, in sliding slot It is provided with support rod, sliding slot is equipped with multiple limit holes, and one end of support rod passes through fixing bolt and the detachable company of limit hole It connects, the other end of support rod is hinged with supporting block by the second pin shaft, and supporting block is agreed with limiting through hole.
In preferred scheme, the top of the baffle is equipped with limit sliding chutes, is movably installed with windbreaker cloth in limit sliding chutes, Windbreaker cloth is equipped with fixed link far from one end of limit sliding chutes, and fixed link is equipped with multiple fixation holes, hangs with hook on fixation hole, hangs Hook is connect by elastic string with torsionspring, and torsionspring is fixedly connected by link block with the bottom of baffle.
In preferred scheme, the both ends of the limit sliding chutes are movably installed with limited block.
In preferred scheme, the fixed plate is equipped with sound-absorbing pad.
In preferred scheme, the fixed plate is equipped with buffering inclined-plane, and buffering inclined-plane is located at the left and right two of limiting through hole Side.
In preferred scheme, the length of the sliding slot is no less than 3/4ths of fixed plate length, the length of sliding slot, no Greater than the length of fixed plate.
In preferred scheme, the mounting groove is " convex " type groove.
In preferred scheme, the width of the windbreaker cloth is no less than the half of filter screen width, the width of windbreaker cloth Degree is not more than 4/5ths of filter screen width.
In preferred scheme, the fixed plate, baffle, sliding slot and support rod are high-strength alloy material.
In preferred scheme, the application method of above-mentioned apparatus the following steps are included:
Step 1: it in use, selecting suitable protection distance and protection scope according to burst strength first, selects sufficient amount of The present apparatus carries out installation connection, and explosion protection scope is surrounded;
Step 2: and then the fixation position of adjustment support rod on the chute, then supporting block is put into limiting through hole and is agreed with admittedly It is fixed, then pass through the link position of fixing bolt fixed support rod and sliding slot;
Step 3: will be mounted in limit sliding chutes at the top of windbreaker cloth, and install limited block at the both ends of limit sliding chutes, reuse Hook catches on the bottom of windbreaker cloth;
Step 4: finally guarantee sound-absorbing pad in each group of present apparatus fixed plate towards blast area, fixed plate where sliding slot Blasting protection setting is completed backwards to blast area in side.
A kind of municipal administration transformation aging blocks blasting protection equipment and application method provided by the present invention, by using above-mentioned knot Structure has the advantages that
(1) by buffering suface, through-hole, buffer spring and auxiliary support structure, demolition blasting in municipal administration transformation is effectively reduced Impact force, improve whole device protection explosion stability;
(2) harm of slungshot in explosion has effectively been intercepted by filter screen structure;
(3) by dustcloth, position limiting structure, elastic string and torsionspring composite structure, not only ensure that dustcloth tolerance tear open Except explosion generates the impulse force of impact air-flow, more flue dust is oriented to by dustcloth, facilitates processing, avoids the pollution to air;
(4) it helps to reduce the noise in blasting process by sound-absorbing pad, avoids that surrounding resident is caused excessively to injure;
(5) whole device facilitates installation, simple using step, it is easier to which disassembly stacks, convenient for storage transhipment.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is overall structure front schematic view of the invention.
Fig. 2 is overall structure schematic rear view of the invention.
Fig. 3 is use state overall structure schematic rear view of the invention.
Fig. 4 is fixed plate structure schematic diagram of the invention.
Fig. 5 is baffle arrangement top view of the invention.
Fig. 6 is sliding slot and supporting bar structure schematic diagram of the invention.
Fig. 7 is windbreaker cloth structural schematic diagram of the invention.
Fig. 8 is windbreaker cloth floor structure schematic diagram of the invention.
In figure: fixed plate 1, sound-absorbing pad 101, mounting groove 102, limiting through hole 103 buffer inclined-plane 104, baffle 2, spring 201, backing plate 202, filter screen 3, windbreaker cloth 4, limit sliding chutes 5, fixed link 6, sliding slot 7, limit hole 701, fixed block 8, link block 9, the first pin shaft 10, support rod 11, fixing bolt 12, supporting block 13, the second pin shaft 14, limited block 15, fixation hole 16, elastic string 17, hook 18, torsionspring 19.
Specific embodiment
Embodiment one:
As in Fig. 1-8, a kind of municipal administration transformation aging blocks blasting protection equipment and application method, including fixed plate 1, baffle 2, it is described Fixed plate 1 is equipped with mounting groove 102 and limiting through hole 103, and the left and right ends of baffle 2 are slidably mounted in mounting groove 102, keeps off Plate 2 is equipped with filter screen 3, and baffle 2 is connect by multiple springs 201 with backing plate 202, and backing plate 202 and the inner wall of mounting groove 102 are complete Full connected, the bottom of fixed plate 1 are equipped with fixed block 8, and fixed block 8 is connect by the first pin shaft 10 with sliding slot 7, setting in sliding slot 7 There is support rod 11, sliding slot 7 is equipped with multiple limit holes 701, and one end of support rod 11 can by fixing bolt 12 and limit hole 701 It is detachably connected with, the other end of support rod 11 is hinged by the second pin shaft 14 and supporting block 13, supporting block 13 and limiting through hole 103 Agree with.
In preferred scheme, the top of the baffle 2 is equipped with limit sliding chutes 5, is movably installed with radix saposhnikoviae in limit sliding chutes 5 Cloth 4, windbreaker cloth 4 are equipped with fixed link 6 far from one end of limit sliding chutes 5, and fixed link 6 is equipped with multiple fixation holes 16, fixation hole 16 On hang with hook 18, hook 18 connect by elastic string 17 with torsionspring 19, and torsionspring 19 passes through link block 9 and baffle 2 Bottom be fixedly connected.Conducive to the water conservancy diversion to Blasting dust air-flow, the pollution to air is avoided.
In preferred scheme, the both ends of the limit sliding chutes 5 are movably installed with limited block 15.Facilitate installing and dismounting anti- Wind cloth 4 is conducive to storage shipment.
In preferred scheme, the fixed plate 1 is equipped with sound-absorbing pad 101.Reduce the noise generated in blast process.
In preferred scheme, the fixed plate 1 is equipped with buffering inclined-plane 104, and buffering inclined-plane 104 is located at limiting through hole 103 left and right sides.For the effective water conservancy diversion of gas shock that explosion generates, slow down impact force.
In preferred scheme, the length of the sliding slot 7 is no less than 3/4ths of 1 length of fixed plate, the length of sliding slot 7 Degree, no more than the length of fixed plate 1.Without convenient for collecting, and ensure that the length of sliding slot 7 allows support rod 11 there are enough positions to go Support angle is adjusted, the integral strength of device is improved.
In preferred scheme, the mounting groove 102 is " convex " type groove.There is position limiting structure, conducive to the fixation of baffle 2, mentions The high stability in use of whole device.
In preferred scheme, the width of the windbreaker cloth 4 is no less than the half of 3 width of filter screen, windbreaker cloth 4 Width is not more than 4/5ths of 3 width of filter screen.Allow windbreaker cloth 4 to most of dust streams progress water conservancy diversion, and there are Enough gas overflow gaps, avoid whole device from being turned over.
In preferred scheme, the fixed plate 1, baffle 2, sliding slot 7 and support rod 11 are high-strength alloy material.It mentions The high intensity of device entirety.
Embodiment two:
As in Fig. 1-8, in preferred scheme, the application method of above-mentioned apparatus the following steps are included:
Step 1: it in use, selecting suitable protection distance and protection scope according to burst strength first, selects sufficient amount of The present apparatus carries out installation connection, and explosion protection scope is surrounded;
Step 2: and then fixation position of the adjustment support rod 11 on sliding slot 7, supporting block 13 is then put into limiting through hole 103 In agree with fixation, then pass through the link position of fixing bolt 12 fixed support rod 11 and sliding slot 7;
Step 3: the top of windbreaker cloth 4 is mounted in limit sliding chutes 5, and installs limited block 15 at the both ends of limit sliding chutes 5, Reuse the bottom that hook 18 catches on windbreaker cloth 4;
Step 4: finally guarantee sound-absorbing pad 101 in each group of present apparatus fixed plate 1 towards blast area, it is fixed where sliding slot 7 Blasting protection setting is completed backwards to blast area in the side of plate 1.
Beneficial effects of the present invention: it by buffering suface, through-hole, buffer spring and auxiliary support structure, effectively reduces The impact force of demolition blasting in municipal administration transformation, improves the stability of whole device protection explosion;It is effective by filter screen structure The harm of slungshot in explosion is intercepted;By the composite structure of dustcloth, position limiting structure, elastic string and torsionspring, not only protect The impulse force that dustcloth tolerance demolition blasting generates impact air-flow has been demonstrate,proved, more flue dust is oriented to by dustcloth, facilitates processing, avoids Pollution to air;It helps to reduce the noise in blasting process by sound-absorbing pad, avoids that surrounding resident is caused excessively to injure; Whole device facilitates installation, simple using step, it is easier to which disassembly stacks, convenient for storage transhipment.

Claims (10)

1. a kind of municipal administration transformation aging blocks blasting protection equipment, including fixed plate (1), baffle (2), it is characterised in that: described consolidates Fixed board (1) is equipped with mounting groove (102) and limiting through hole (103), and the left and right ends of baffle (2) are slidably mounted on mounting groove (102) in, baffle (2) is equipped with filter screen (3), and baffle (2) is connect by multiple springs (201) with backing plate (202), backing plate (202) it is completely attached to the inner wall of mounting groove (102), the bottom of fixed plate (1) is equipped with fixed block (8), and fixed block (8) passes through the One pin shaft (10) is connect with sliding slot (7), is provided with support rod (11) in sliding slot (7), and sliding slot (7) is equipped with multiple limit holes (701), one end of support rod (11) passes through fixing bolt (12) and limit hole (701) detachable connection, support rod (11) The other end hingedly by the second pin shaft (14) and supporting block (13), agree with limiting through hole (103) by supporting block (13).
2. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the baffle (2) top is equipped with limit sliding chutes (5), is movably installed with windbreaker cloth (4) in limit sliding chutes (5), and windbreaker cloth (4) is slided far from limit One end of slot (5) is equipped with fixed link (6), and fixed link (6) is equipped with multiple fixation holes (16), and fixation hole hangs with hook on (16) (18), hook (18) is connect by elastic string (17) with torsionspring (19), and torsionspring (19) passes through link block (9) and baffle (2) bottom is fixedly connected.
3. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 2, it is characterised in that: the limit is sliding The both ends of slot (5) are movably installed with limited block (15).
4. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the fixed plate (1) sound-absorbing pad (101) are equipped with.
5. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the fixed plate (1) it is equipped with buffering inclined-plane (104), buffering inclined-plane (104) is located at the left and right sides of limiting through hole (103).
6. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the sliding slot (7) length is no less than 3/4ths of fixed plate (1) length, and the length of sliding slot (7) is not more than the length of fixed plate (1).
7. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the mounting groove It (102) is " convex " type groove.
8. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the windbreaker cloth (4) width is no less than the half of filter screen (3) width, and the width of windbreaker cloth (4) is not more than the five of filter screen (3) width / tetra-.
9. a kind of municipal administration transformation aging blocks blasting protection equipment according to claim 1, it is characterised in that: the fixed plate (1), baffle (2), sliding slot (7) and support rod (11) are high-strength alloy material.
10. a kind of application method of municipal administration transformation aging blocks blasting protection equipment described according to claim 1 ~ 9, it is characterised in that The following steps are included:
Step 1: it in use, selecting suitable protection distance and protection scope according to burst strength first, selects sufficient amount of The present apparatus carries out installation connection, and explosion protection scope is surrounded;
Step 2: and then fixation position of adjustment support rod (11) on sliding slot (7), it is logical that supporting block (13) is then put into limit Fixation is agreed in (103) in hole, then passes through the link position of fixing bolt (12) fixed support rod (11) and sliding slot (7);
Step 3: will be mounted in limit sliding chutes (5) at the top of windbreaker cloth (4), and installs and limit at the both ends of limit sliding chutes (5) Block (15) reuses the bottom that hook (18) catches on windbreaker cloth (4);
Step 4: finally guarantee the sound-absorbing pad (101) on each group of present apparatus fixed plate (1) towards blast area, sliding slot (7) institute In the side of fixed plate (1) backwards to blast area, blasting protection setting is completed.
CN201910156354.8A 2019-03-01 2019-03-01 A kind of municipal administration transformation aging blocks blasting protection equipment and application method Pending CN109900179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910156354.8A CN109900179A (en) 2019-03-01 2019-03-01 A kind of municipal administration transformation aging blocks blasting protection equipment and application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910156354.8A CN109900179A (en) 2019-03-01 2019-03-01 A kind of municipal administration transformation aging blocks blasting protection equipment and application method

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Publication Number Publication Date
CN109900179A true CN109900179A (en) 2019-06-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112431476A (en) * 2020-11-28 2021-03-02 中实翊(福建)建设工程有限公司 Municipal engineering protection structure and construction method
CN112709594A (en) * 2020-11-19 2021-04-27 西华大学 Bore and explode formula tunnel excavation auxiliary device
CN114909967A (en) * 2022-05-26 2022-08-16 江苏长江***工程有限公司 Trailer type explosion-proof device for chimney directional blasting demolition and use method
CN117585100A (en) * 2024-01-19 2024-02-23 东方空间(江苏)航天动力有限公司 Marine rocket launch ship

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107514946A (en) * 2017-10-12 2017-12-26 贵州大学 A kind of explosion isolation protecting device of convenient use
CN206859812U (en) * 2017-04-07 2018-01-09 李志国 Architectural engineering protection network
CN107907022A (en) * 2017-12-11 2018-04-13 贵州大学 It is a kind of for colliery blasting easy to the protective device that folds
DE102016013673A1 (en) * 2016-11-14 2018-05-17 IfL Ingenieurbüro für Leichtbau GmbH & Co. KG Temporary mobile protection against ballistic and explosive outdoor use
CN108295595A (en) * 2018-04-10 2018-07-20 卢乐 A kind of building blasting anti-dust device
CN109026123A (en) * 2018-08-21 2018-12-18 华东建工集团有限公司 A kind of constructing tunnel dust-extraction unit
CN109098528A (en) * 2018-09-16 2018-12-28 六盘水久翔***工程有限责任公司 A kind of surface blasting safety protective fence
CN209763899U (en) * 2019-03-01 2019-12-10 湖北乾奥建设工程有限公司 Old building blasting protective equipment of municipal administration transformation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016013673A1 (en) * 2016-11-14 2018-05-17 IfL Ingenieurbüro für Leichtbau GmbH & Co. KG Temporary mobile protection against ballistic and explosive outdoor use
CN206859812U (en) * 2017-04-07 2018-01-09 李志国 Architectural engineering protection network
CN107514946A (en) * 2017-10-12 2017-12-26 贵州大学 A kind of explosion isolation protecting device of convenient use
CN107907022A (en) * 2017-12-11 2018-04-13 贵州大学 It is a kind of for colliery blasting easy to the protective device that folds
CN108295595A (en) * 2018-04-10 2018-07-20 卢乐 A kind of building blasting anti-dust device
CN109026123A (en) * 2018-08-21 2018-12-18 华东建工集团有限公司 A kind of constructing tunnel dust-extraction unit
CN109098528A (en) * 2018-09-16 2018-12-28 六盘水久翔***工程有限责任公司 A kind of surface blasting safety protective fence
CN209763899U (en) * 2019-03-01 2019-12-10 湖北乾奥建设工程有限公司 Old building blasting protective equipment of municipal administration transformation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
姚熊亮等, 国防工业出版社 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112709594A (en) * 2020-11-19 2021-04-27 西华大学 Bore and explode formula tunnel excavation auxiliary device
CN112431476A (en) * 2020-11-28 2021-03-02 中实翊(福建)建设工程有限公司 Municipal engineering protection structure and construction method
CN112431476B (en) * 2020-11-28 2022-04-19 中实翊(福建)建设工程有限公司 Municipal engineering protection structure and construction method
CN114909967A (en) * 2022-05-26 2022-08-16 江苏长江***工程有限公司 Trailer type explosion-proof device for chimney directional blasting demolition and use method
CN117585100A (en) * 2024-01-19 2024-02-23 东方空间(江苏)航天动力有限公司 Marine rocket launch ship
CN117585100B (en) * 2024-01-19 2024-03-22 东方空间(江苏)航天动力有限公司 Marine rocket launch ship

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