CN113203332B - Flying stone protection equipment for open blasting engineering and protection method thereof - Google Patents
Flying stone protection equipment for open blasting engineering and protection method thereof Download PDFInfo
- Publication number
- CN113203332B CN113203332B CN202110457140.1A CN202110457140A CN113203332B CN 113203332 B CN113203332 B CN 113203332B CN 202110457140 A CN202110457140 A CN 202110457140A CN 113203332 B CN113203332 B CN 113203332B
- Authority
- CN
- China
- Prior art keywords
- support
- connecting plate
- flying
- supporting rod
- storage box
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Revetment (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses flying stone protection equipment for open blasting engineering and a protection method thereof, belonging to the technical field of flying stone protection equipment. According to the invention, through the arrangement of the protective bag and the non-Newtonian fluid layer, flying stones generated by blasting can be better protected, the flying stones are prevented from penetrating through the protective equipment to hurt personnel, the non-Newtonian fluid layer can be conveniently wound under the condition of no stress, through the arrangement of the bottom plate, the groove, the first supporting rod and the second supporting rod, the equipment can be conveniently folded and stored, the installation and the disassembly are more convenient, the assembly time of the equipment during use is saved, and the occupied space of the equipment during transportation can be facilitated.
Description
Technical Field
The invention relates to flyrock protection equipment, in particular to flyrock protection equipment for open blasting engineering and a protection method thereof, and belongs to the technical field of flyrock protection equipment.
Background
Protective equipment is required to be constructed during blasting operation to block flying stones generated by blasting so as to prevent the flying stones generated by blasting from damaging workers and equipment.
How to research flying rock protective equipment for open blasting engineering and a protective method thereof is a problem to be solved urgently at present.
Disclosure of Invention
The invention mainly aims to solve the defects of the prior art and provides flying stone protection equipment for an open blasting project.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides an open-air blasting engineering is with flying stone protective apparatus, includes the bottom plate, the recess has been seted up to the inside of bottom plate, the inside of recess is rotated and is installed first bracing piece, one side of first bracing piece is provided with the second bracing piece, the second through-hole has all been seted up at the front and the back of bottom plate, the inside of second through-hole is provided with set screw, first bracing piece with be provided with the protecting bag between the second bracing piece, the inside of protecting bag is provided with non-Newton's fluid layer, the protecting bag through a plurality of couples movable mounting in first bracing piece with between the second bracing piece, be provided with a plurality of staples on the bottom plate.
Preferably, a first support is arranged on the outer side of the first support rod, and a second support is arranged on the outer side of the second support rod.
Preferably, the first support and the second support are respectively provided with a first through hole, and the first support and the second support are respectively movably arranged on the outer sides of the first support rod and the second support rod through the first through hole and a bolt.
Preferably, a second barrier net is arranged between the first support and the second support, and a first barrier net is arranged below the second barrier net.
Preferably, the top of bottom plate is provided with the bin, the top of bin is provided with the case lid, the case lid pass through the second hinge rotate install in the top of bin.
Preferably, the case cover is provided with a fixed seat, and the inner side of the fixed seat is rotatably provided with a push rod.
Preferably, the bottom plate comprises a first connecting plate, a second connecting plate is arranged on one side of the first connecting plate, a third connecting plate is arranged on the other side of the first connecting plate, a fifth connecting plate is arranged on one side of the second connecting plate, and a fourth connecting plate is arranged on one side of the third connecting plate.
Preferably, the first connecting plate, the second connecting plate, the third connecting plate, the fourth connecting plate and the fifth connecting plate are rotatably connected through a plurality of first hinges.
A protection method of flying stone protection equipment for open blasting engineering comprises the following steps:
step 1: the flying stones in blasting collide with the protective bag and the second blocking net, at the moment, the non-Newtonian fluid layer in the protective bag becomes hard after being impacted, the flying stones are bounced off, the flying stones impacting on the second blocking net are buffered by the second blocking net, then fall onto the top of the box cover along the first blocking net, and then roll into the storage box along the box cover;
and 2, step: when the storage box is used, flying stones in the storage box are cleaned out, the protective bag, the first support and the second support are detached, the first support rod and the second support rod are folded into the groove, and the detached protective bag, the first support and the second support are placed into the storage box and covered with a box cover;
and step 3: then the first connecting plate, the second connecting plate, the third connecting plate, the fourth connecting plate and the fifth connecting plate are folded, so that the bottom plate becomes a cuboid with openings at two ends.
Preferably, the box cover and the first arresting net are used for providing guidance for flying stones.
The invention has the beneficial technical effects that: according to the flying stone protection equipment for the open blasting engineering and the protection method thereof, the flying stones generated by blasting can be better protected by arranging the protection bag and the non-Newtonian fluid layer, the flying stones are prevented from penetrating through the protection equipment to cause injury to personnel, the non-Newtonian fluid layer can be conveniently wound under the condition of no stress, the equipment can be conveniently folded and stored by arranging the bottom plate, the groove, the first supporting rod and the second supporting rod, the installation and the disassembly are convenient, the assembly time of the equipment during use is saved, and the space occupied by the equipment during transportation can be facilitated.
Drawings
Fig. 1 is a schematic overall configuration diagram of a preferred embodiment of a flying-stone protection apparatus for open blasting engineering and a protection method thereof according to the present invention;
fig. 2 is a sectional view of a preferred embodiment of a flying-stone protecting apparatus for open blasting work and a protecting method thereof according to the present invention;
fig. 3 is a schematic structural view of a storage tank of a preferred embodiment of the flying stone protection apparatus for open blasting engineering and the protection method thereof according to the present invention;
fig. 4 is a first supporting structure diagram of a preferred embodiment of the flying-stone protecting apparatus for open blasting engineering and the protecting method thereof according to the present invention;
fig. 5 is a schematic structural view of a bottom plate of a preferred embodiment of the flying-stone protecting apparatus for open blasting engineering and the protecting method thereof according to the present invention;
fig. 6 is an enlarged view of a structure at a of fig. 1 in accordance with a preferred embodiment of the flying-stone shielding apparatus for open blasting work and the shielding method thereof according to the present invention.
In the figure: 1-bottom plate, 101-first connecting plate, 102-second connecting plate, 103-third connecting plate, 104-fourth connecting plate, 105-fifth connecting plate, 2-fixing nail, 3-first hinge, 4-storage box, 5-first supporting rod, 6-first support, 7-bolt, 8-box cover, 9-first blocking net, 10-second support, 11-second blocking net, 12-second supporting rod, 13-fixing screw, 14-groove, 15-protective bag, 16-ejector rod, 17-fixing seat, 18-first through hole, 19-second through hole, 20-non-Newtonian fluid layer, 21-hook and 22-second hinge.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1 to 6, the flying stone protection device for open blasting engineering provided in this embodiment includes a bottom plate 1, a groove 14 is formed in the bottom plate 1, a first support rod 5 is rotatably installed in the groove 14, a second support rod 12 is disposed on one side of the first support rod 5, second through holes 19 are formed in both the front and the back of the bottom plate 1, fixing screws 13 are disposed in the second through holes 19, a protection bag 15 is disposed between the first support rod 5 and the second support rod 12, a non-newton fluid layer 20 is disposed in the protection bag 15, the protection bag 15 is movably installed between the first support rod 5 and the second support rod 12 through a plurality of hooks 21, and a plurality of fixing screws 2 are disposed on the bottom plate 1. Through the setting of protective bag 15 and non-Newtonian fluid layer 20, can carry out better protection to the flying stone that the blasting produced, prevent that flying stone from passing protective apparatus and causing the injury to the personnel, and non-Newtonian fluid layer 20 can also conveniently carry out the rolling under the condition of not atress, through bottom plate 1, recess 14, the setting of first bracing piece 5 and second bracing piece 12, can make things convenient for equipment to fold and accomodate, and the installation is dismantled more conveniently, the equipment time when having saved equipment usage, the space that occupies when can also making things convenient for equipment transportation.
In the present embodiment, as shown in fig. 1, 2 and 3, a storage box 4 is disposed on the top of the bottom plate 1, a box cover 8 is disposed on the top of the storage box 4, the box cover 8 is rotatably mounted on the top of the storage box 4 through a second hinge 22, a fixing seat 17 is disposed on the box cover 8, and a push rod 16 is rotatably mounted on the inner side of the fixing seat 17. Through bin 4, case lid 8, fixing base 17 and ejector pin 16's setting, can conveniently catch the flyrock, conveniently clear up the flyrock, bin 4 can also store the equipment part moreover, through fixing base 17 and ejector pin 16's setting, can conveniently support case lid 8.
In this embodiment, as shown in fig. 1 and 4, a first bracket 6 is disposed outside the first support bar 5, a second bracket 10 is disposed outside the second support bar 12, first through holes 18 are disposed on the first bracket 6 and the second bracket 10, the first bracket 6 and the second bracket 10 are movably mounted outside the first support bar 5 and the second support bar 12 through the first through holes 18 and bolts 7, a second arresting net 11 is disposed between the first bracket 6 and the second bracket 10, and a first arresting net 9 is disposed below the second arresting net 11. Through the setting of first arresting net 9 and second arresting net 11, can assist protection bag 15 and non-Newton's fluid layer 20 to carry out the secondary protection, but also can cushion the inside that makes things convenient for the flyrock to fall into bin 4 to the flyrock, through the setting of first support 6, second support 10, first through-hole 18 and bolt 7, can conveniently adjust the inclination of fixing the second arresting net 11 between first support 6 and second support 10.
In this embodiment, as shown in fig. 1, 2, 5 and 6, the bottom plate 1 includes a first connecting plate 101, a second connecting plate 102 is disposed on one side of the first connecting plate 101, a third connecting plate 103 is disposed on the other side of the first connecting plate 101, a fifth connecting plate 105 is disposed on one side of the second connecting plate 102, a fourth connecting plate 104 is disposed on one side of the third connecting plate 103, and the first connecting plate 101, the second connecting plate 102, the third connecting plate 103, the fourth connecting plate 104 and the fifth connecting plate 105 are rotatably connected by a plurality of first hinges 3. Through the setting of first hinge 3, can make things convenient for folding and the expansion between first connecting plate 101, second connecting plate 102, third connecting plate 103, fourth connecting plate 104 and the fifth connecting plate 105, make things convenient for the use and the transportation of equipment.
In this embodiment, as shown in fig. 1, a method for protecting flying rock protection equipment for an open blasting project includes the following steps: step 1: the flying stones during blasting collide with the protective bag 15 and the second arresting net 11, at the moment, the non-Newtonian fluid layer 20 in the protective bag 15 becomes hard after being impacted, the flying stones are flicked, the flying stones impacting on the second arresting net 11 are buffered by the second arresting net 11, then fall onto the top of the box cover 8 along the first arresting net 9, and then roll into the storage box 4 along the box cover 8; step 2: when the storage box is used, flying stones in the storage box 4 are cleaned out, the protective bag 15, the first support 6 and the second support 10 are detached, the first support rod 5 and the second support rod 12 are folded into the groove 14, and the detached protective bag 15, the first support 6 and the second support 10 are placed into the storage box 4 and covered by the box cover 8; and step 3: then, the first connecting plate 101, the second connecting plate 102, the third connecting plate 103, the fourth connecting plate 104 and the fifth connecting plate 105 are folded, so that the bottom plate 1 becomes a rectangular parallelepiped with openings at both ends. Both the box cover 8 and the first arresting net 9 are used to provide guidance for flying stones. Through the setting of first arresting net 9 and case lid 8, can lead the flyrock of whereabouts after the buffering of second arresting net 11, make things convenient for the flyrock to get into the inside of bin 4.
In this embodiment, as shown in fig. 1 to fig. 6, the working process of the flying rock protection apparatus for open blasting engineering and the protection method thereof provided in this embodiment is as follows:
step 1: when the bottom plate is used, the bottom plate 1 is fixed through the plurality of fixing nails 2, the first supporting rod 5 and the second supporting rod 12 are rotated out of the groove 14, the first supporting rod 5 and the second supporting rod 12 are fixed through the fixing screws 13, the second supporting rod 12 is hung between the first supporting rod 5 and the second supporting rod 12 through the plurality of hooks 21, the first support 6 and the second support 10 are installed through the bolts 7 and the first through holes 18, and the inclination angle of the second barrier net 11 is adjusted according to the protection requirement;
step 2: the box cover 8 on the storage box 4 is opened, the ejector rod 16 is installed in the fixed seat 17 to support the box cover 8, the flying stones during blasting collide with the protective bag 15 and the second blocking net 11, at the moment, the non-Newtonian fluid layer 20 in the protective bag 15 becomes hard after being collided with the protective bag and bounces off the flying stones, the flying stones collided with the second blocking net 11 are buffered by the second blocking net 11, then fall onto the top of the box cover 8 along the first blocking net 9, and then roll into the storage box 4 along the box cover 8;
and step 3: the utility model discloses a storage box 4, including the storage box, the box cover is characterized in that flying stones in the storage box 4 are cleared up when using, with protective bag 15, first support 6 and second support 10 pull down, take off the set screw 13 of fixed first bracing piece 5 and second bracing piece 12 again, fold first bracing piece 5 and second bracing piece 12 inside recess 14, protective bag 15 that will pull down, the inside of storage box 4 is put into to first support 6 and second support 10, pull down the inside ejector pin 16 of fixing base 17 and cover case lid 8, then fold first connecting plate 101, second connecting plate 102, third connecting plate 103, fourth connecting plate 104 and fifth connecting plate 105, make bottom plate 1 become that both ends have the opening cuboid, make things convenient for the equipment to carry.
In conclusion, in this embodiment, according to the flying stone protection device for the open blasting engineering and the protection method thereof in this embodiment, by setting the storage box 4, the box cover 8, the fixing seat 17 and the ejector rod 16, the flying stones can be conveniently received and cleaned, and the storage box 4 can also store equipment parts, by setting the fixing seat 17 and the ejector rod 16, the box cover 8 can be conveniently supported, by setting the first blocking net 9 and the second blocking net 11, the protection bag 15 and the non-newton fluid layer 20 can be assisted to perform secondary protection, and the flying stones can be buffered and conveniently fall into the storage box 4, by setting the first support 6, the second support 10, the first through hole 18 and the bolts 7, the inclination angle of the second blocking net 11 fixed between the first support 6 and the second support 10 can be conveniently adjusted, by setting the first connecting plate 3, the first connecting plate 101, the second connecting plate 102, the third connecting plate 103, the folding and the expansion between the fourth connecting plate 104 and the fifth connecting plate 105 are convenient, the use and the transportation of the device are convenient, the box cover 9 and the transportation box cover 8 can be conveniently folded and unfolded after the blocking nets are arranged, and the flying stones can conveniently fall into the storage box 4, and conveniently enter the storage box through the guiding connecting plate 11.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (5)
1. The flying stone protection device for the open blasting engineering is characterized by comprising a bottom plate (1), a groove (14) is formed in the bottom plate (1), a first supporting rod (5) is installed in the groove (14) in a rotating mode, a second supporting rod (12) is arranged on one side of the first supporting rod (5), second through holes (19) are formed in the front face and the back face of the bottom plate (1), fixing screws (13) are arranged in the second through holes (19), a protection bag (15) is arranged between the first supporting rod (5) and the second supporting rod (12), a non-Newtonian fluid layer (20) is arranged in the protection bag (15), the protection bag (15) is movably installed between the first supporting rod (5) and the second supporting rod (12) through a plurality of hooks (21), a plurality of fixing nails (2) are arranged on the bottom plate (1), a storage box (4) is arranged at the top of the bottom plate (1), a storage box (8) is arranged at the top of the storage box (4), a box cover (8) is installed on the fixed seat (4) through a second supporting rod (22), and a fixed seat (17) is provided with a hinge (17) and a fixed seat (17) which is installed on the inner side of the fixed seat (17), the novel floor is characterized in that a first support (6) is arranged on the outer side of the first support rod (5), a second support (10) is arranged on the outer side of the second support rod (12), a second blocking net (11) is arranged between the first support (6) and the second support (10), a first blocking net (9) is arranged below the second blocking net (11), the bottom plate (1) comprises a first connecting plate (101), a second connecting plate (102) is arranged on one side of the first connecting plate (101), a third connecting plate (103) is arranged on the other side of the first connecting plate (101), a fifth connecting plate (105) is arranged on one side of the second connecting plate (102), and a fourth connecting plate (104) is arranged on one side of the third connecting plate (103).
2. The flying stone protection device for the open blasting engineering according to claim 1, wherein the first support (6) and the second support (10) are respectively provided with a first through hole (18), and the first support (6) and the second support (10) are respectively movably mounted on the outer sides of the first support rod (5) and the second support rod (12) through the first through hole (18) and a bolt (7).
3. An open blasting engineering flyrock protection device according to claim 1, wherein the first connection plate (101), the second connection plate (102), the third connection plate (103), the fourth connection plate (104) and the fifth connection plate (105) are rotatably connected by a plurality of first hinges (3).
4. The method for protecting flying-stone protecting equipment for open blasting engineering according to claim 1, which comprises the following steps:
step 1: the flying stones during blasting collide with the protective bag (15) and the second arresting net (11), at the moment, the non-Newtonian fluid layer (20) in the protective bag (15) becomes hard after being impacted, the flying stones are flicked, the flying stones impacting on the second arresting net (11) are buffered by the second arresting net (11), then fall onto the top of the box cover (8) along the first arresting net (9), and then roll into the storage box (4) along the box cover (8);
step 2: when the storage box is used, flying stones in the storage box (4) are cleaned out, the protective bag (15), the first support (6) and the second support (10) are detached, the first support rod (5) and the second support rod (12) are folded into the groove (14), and the detached protective bag (15), the first support (6) and the second support (10) are placed into the storage box (4) and covered with the box cover (8);
and 3, step 3: then, the first connecting plate (101), the second connecting plate (102), the third connecting plate (103), the fourth connecting plate (104) and the fifth connecting plate (105) are folded, so that the bottom plate (1) becomes a cuboid with openings at two ends.
5. A method of protecting a flying stone protecting apparatus for an open blasting work according to claim 4, wherein said cover (8) and said first arresting net (9) are used to provide guidance for flying stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110457140.1A CN113203332B (en) | 2021-04-27 | 2021-04-27 | Flying stone protection equipment for open blasting engineering and protection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110457140.1A CN113203332B (en) | 2021-04-27 | 2021-04-27 | Flying stone protection equipment for open blasting engineering and protection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113203332A CN113203332A (en) | 2021-08-03 |
| CN113203332B true CN113203332B (en) | 2022-11-08 |
Family
ID=77028784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110457140.1A Active CN113203332B (en) | 2021-04-27 | 2021-04-27 | Flying stone protection equipment for open blasting engineering and protection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113203332B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295022B (en) * | 2021-12-10 | 2023-06-02 | 中铁十九局集团轨道交通工程有限公司 | Protection device for blasting engineering |
| CN114440725B (en) * | 2022-01-25 | 2023-12-29 | 崔维群 | Blasting flying stone protection device and method |
| CN114909967B (en) * | 2022-05-26 | 2023-04-11 | 江苏长江爆破工程有限公司 | Trailer type explosion-proof device for chimney directional blasting demolition and use method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884239A (en) * | 2014-04-08 | 2014-06-25 | 刘敦敏 | Multifunctional bulletproof container type shield |
| JP2014227786A (en) * | 2013-05-24 | 2014-12-08 | 株式会社大林組 | Protection device for tunnel blasting |
| CN207197381U (en) * | 2017-09-11 | 2018-04-06 | 中铁五局集团有限公司 | A kind of protector for being used to prevent that Tunnel Blasting slungshot and shock wave from destroying |
| CN211121612U (en) * | 2020-01-09 | 2020-07-28 | 中铁十局集团有限公司 | Blasting vibrations control and safety device |
| CN212620404U (en) * | 2020-06-03 | 2021-02-26 | 浙江安联矿业有限公司 | Flying stone splash protection device for mine blasting |
| CN213021290U (en) * | 2021-01-15 | 2021-04-20 | 新疆中岩恒泰爆破工程有限公司 | Flying stone protective device for open blasting |
| CN212995199U (en) * | 2020-03-28 | 2021-04-20 | 玛赫健·艾力 | Accomodate pin-connected panel screen baffle |
-
2021
- 2021-04-27 CN CN202110457140.1A patent/CN113203332B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014227786A (en) * | 2013-05-24 | 2014-12-08 | 株式会社大林組 | Protection device for tunnel blasting |
| CN103884239A (en) * | 2014-04-08 | 2014-06-25 | 刘敦敏 | Multifunctional bulletproof container type shield |
| CN207197381U (en) * | 2017-09-11 | 2018-04-06 | 中铁五局集团有限公司 | A kind of protector for being used to prevent that Tunnel Blasting slungshot and shock wave from destroying |
| CN211121612U (en) * | 2020-01-09 | 2020-07-28 | 中铁十局集团有限公司 | Blasting vibrations control and safety device |
| CN212995199U (en) * | 2020-03-28 | 2021-04-20 | 玛赫健·艾力 | Accomodate pin-connected panel screen baffle |
| CN212620404U (en) * | 2020-06-03 | 2021-02-26 | 浙江安联矿业有限公司 | Flying stone splash protection device for mine blasting |
| CN213021290U (en) * | 2021-01-15 | 2021-04-20 | 新疆中岩恒泰爆破工程有限公司 | Flying stone protective device for open blasting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113203332A (en) | 2021-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113203332B (en) | Flying stone protection equipment for open blasting engineering and protection method thereof | |
| CN114197844B (en) | Supporting platform with protection function for building construction | |
| CN212849447U (en) | Box-type substation with anti-collision structure | |
| CN219156034U (en) | Reel feeding mechanism | |
| CN114778333A (en) | Safety helmet detection device | |
| CN111706055B (en) | Scaffold with beta structure portable for power maintenance | |
| CN218888004U (en) | Pipeline protection device for comprehensive wiring engineering | |
| CN219081398U (en) | Combined use hanging hole safety protection cover plate | |
| CN220226388U (en) | Command shelter with folding table | |
| CN215368636U (en) | Hanging basket structure for outer wall construction | |
| CN219620630U (en) | Elevator well protector | |
| CN215629460U (en) | High-altitude falling prevention device for bridge construction | |
| CN214055149U (en) | Hand nailing machine guard plate with protection effect | |
| CN220319271U (en) | Temporary protective fence for retractable interior decoration | |
| CN220336414U (en) | Safe anti-falling equipment for building construction | |
| CN219569665U (en) | Protective hoistway guardrail for elevator construction | |
| CN220757836U (en) | Multifunctional emergency rescue assembly bag | |
| CN215978415U (en) | Support for building engineering construction | |
| CN218598099U (en) | Enhancement steel pipe civil air defense door | |
| CN216196798U (en) | Building protection net | |
| CN216517044U (en) | Protector is used in building site construction | |
| CN219175937U (en) | Anti-falling guardrail for building construction | |
| CN217205928U (en) | IBP dish of maintaining safe convenient | |
| CN220203451U (en) | Discharging platform with protection plates | |
| CN218541464U (en) | Safe anti-falling device for building construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |