CN116446720B - Metal guard bar - Google Patents
Metal guard bar Download PDFInfo
- Publication number
- CN116446720B CN116446720B CN202310722232.7A CN202310722232A CN116446720B CN 116446720 B CN116446720 B CN 116446720B CN 202310722232 A CN202310722232 A CN 202310722232A CN 116446720 B CN116446720 B CN 116446720B
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- CN
- China
- Prior art keywords
- groove
- wall
- butt joint
- plate
- movable frame
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a metal guardrail, which relates to the technical field of guardrails and comprises a guardrail main body, wherein two ends of the guardrail main body are respectively provided with a connector and a butt joint, and the connectors and the butt joints are in butt joint through a connecting mechanism. According to the invention, the movable frame is pushed to slide in the movable groove by arranging the connecting mechanism and the adjusting mechanism, and the whole height of the guardrail main body is adjusted by adjusting the height of the movable frame; after the adjustment is completed, the movable frame is fixed by rotating the connecting plate; when butt joint is carried out between two guardrail main bodies, the connecting plate is inserted into the cavity formed between the second groove and the push plate, the clamping block enters the clamping groove, the connector and the butt joint are fixed, and then butt joint installation is carried out between the two guardrail main bodies, so that the two guardrails can be conveniently and rapidly installed and dismantled, the heights of the guardrails can be flexibly adjusted and fixed, and after the guardrails are in butt joint, the guardrails are prevented from being changed in height.
Description
Technical Field
The invention relates to the technical field of guardrails, in particular to a metal guardrail.
Background
The metal guardrail is used as a safety facility for protection, can be placed at a specific position around a building or in the environment, and plays a role in blocking and protecting. In the prior art, when assembling the guardrail, need adopt the bolt to connect in advance a plurality of guardrails earlier, later consolidate the guardrail through welding operation and connect to guarantee joint strength and the overall rigidity after the guardrail is installed. In the case of inconvenient power supply, however, the welding operation is difficult to perform; moreover, in the areas with larger day and night temperature differences, the metal guardrails are inevitably deformed and distorted, so that the welding points are broken, and the guardrails are damaged. In addition, when the guardrail of the type is disassembled, the joint of the guardrails is required to be cut, the operation is inconvenient, and the guardrails are easy to damage, so that the guardrails cannot be recycled; meanwhile, the height of the guardrail is fixed during production, so that the guardrail cannot be adjusted, and the use requirements under different conditions are difficult to meet.
In view of this, a metal fence is provided for convenience in mounting connection and height adjustment of the fence.
Disclosure of Invention
The invention aims at: in order to achieve the purposes of conveniently installing and connecting the guardrails and adjusting the heights, the metal guardrails are provided.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a metal guardrail, includes the guardrail main part, the both ends of guardrail main part are provided with connector and butt joint respectively, the connector with dock through coupling mechanism between the butt joint, the height of guardrail main part is adjusted through adjustment mechanism, adjustment mechanism includes the fly frame, through right the fly frame goes up and down to realize right the height of guardrail main part is adjusted, the connector with when butt joint, can further fix the real-time position of fly frame prevents take place the change of height in the use of guardrail main part.
The connecting mechanism comprises a first groove, the first groove is formed in the outer wall of the connector, the connecting plate is connected with the inner wall of the first groove in a rotating mode, a clamping groove is formed in the outer wall of the connecting plate, a second groove is formed in the outer wall of the butt joint, a through hole which extends into the second groove is formed in the outer wall of the butt joint, a pushing plate which extends into the second groove is connected with the inner sliding connection of the butt joint, a jack which penetrates through the pushing plate is formed in the outer wall of the pushing plate, a clamping block which extends to the lower portion of the pushing plate is connected with the inner sliding connection of the pushing plate, a spring is connected between the top end of the clamping block and the pushing plate, and a push rod is connected with the inner cavity of the jack in a sliding mode and located on one side of the clamping block.
As still further aspects of the invention: the adjusting mechanism further comprises a movable groove, the movable groove is formed in the guardrail main body, the movable frame is slidably connected to the inner wall of the movable groove, the outer wall of the movable frame is provided with a latch, one end of the connecting plate is fixedly connected with a spur gear, and the connector is located in the spur gear and is slidably connected with a fixing plate at the bottom end of the spur gear.
As still further aspects of the invention: the adjusting mechanism further comprises a mounting groove, the mounting groove is formed in the outer wall of the connector and is communicated with the first groove, the inner wall of the mounting groove is rotationally connected with a rotating plate, and one end of the pushing plate is fixedly connected with a mounting plate.
As still further aspects of the invention: the inner walls of the first groove and the second groove are attached to the outer wall of the connecting plate, and a cavity is formed between the second groove and the pushing plate and matched with the connecting plate.
As still further aspects of the invention: one side of the clamping block is provided with an inclined plane, one end of the ejector rod is contacted with the inclined plane, and one end of the ejector rod away from the inclined plane is provided with an arc-shaped surface.
As still further aspects of the invention: the top fixedly connected with stopper of ejector pin, the inside of push pedal is offered and is supplied the stopper carries out gliding spacing groove.
As still further aspects of the invention: the connecting plate is connected with the first groove through a rotating shaft, and the spur gear and the rotating shaft are coaxially arranged.
As still further aspects of the invention: the top of the fixed plate is provided with tooth grooves, and the spur gear is meshed with the tooth grooves.
As still further aspects of the invention: the inner wall of the movable groove is attached to the outer wall of the movable frame, and one end of the fixed plate is clamped with the clamping teeth, so that the movable frame is fixed.
Compared with the prior art, the invention has the beneficial effects that:
by arranging the connecting mechanism and the adjusting mechanism, the movable frame is pushed to slide in the movable groove; the height of the guardrail main body is adjusted by adjusting the height of the movable frame; after the adjustment is completed, the movable frame is fixed by rotating the connecting plate; when butt joint is carried out between two guardrail main bodies, the connecting plate is inserted into the cavity formed between the second groove and the push plate, the clamping block enters the clamping groove, the connector and the butt joint are fixed, further butt joint is carried out between the two guardrail main bodies, the two guardrails are convenient to install and dismantle, meanwhile, the heights of the guardrails can be flexibly adjusted and fixed, and after the guardrails are in butt joint, the guardrails are prevented from being changed in height.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the mounting structure of the movable frame of the present invention;
fig. 3 is a schematic structural view of the connector (the connecting plate is in a vertical state);
fig. 4 is a schematic structural view of the connector (the connecting plate is in a horizontal state);
fig. 5 is a schematic structural view of the butt joint of the present invention (the mounting plate is in a housed state);
FIG. 6 is a schematic view of the structure of the abutment of the present invention (mounting plate in extended condition);
fig. 7 is a schematic view of the internal structure of the butt joint of the present invention.
In the figure: 1. a guardrail main body; 2. a connector; 3. butt joint; 4. a connecting mechanism; 401. a first groove; 402. a connecting plate; 403. a clamping groove; 404. a second groove; 405. a through hole; 406. a push plate; 407. a jack; 408. a clamping block; 409. a spring; 410. a push rod; 5. an adjusting mechanism; 501. a movable groove; 502. a movable frame; 503. latch teeth; 504. spur gears; 505. a fixing plate; 506. a mounting groove; 507. a rotating plate; 508. a mounting plate; 6. a limiting block; 7. and a limit groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, in an embodiment of the present invention, a metal guardrail includes a guardrail main body 1, two ends of the guardrail main body 1 are respectively provided with a connector 2 and a butt joint 3, the connector 2 and the butt joint 3 are in butt joint through a connection mechanism 4, the height of the guardrail main body 1 is adjusted through an adjusting mechanism 5, the adjusting mechanism 5 includes a movable frame 502, and the height of the guardrail main body 1 is adjusted by lifting the movable frame 502. When the connector 2 and the butt joint 3 are in butt joint, the movable frame 502 is reinforced, and the change of the height of the guardrail main body 1 in use is prevented. The connecting mechanism 4 comprises a first groove 401, the first groove 401 is formed in the outer wall of the connector 2, the inner wall of the first groove 401 is rotationally connected with a connecting plate 402, and a clamping groove 403 is formed in the outer wall of the connecting plate 402. The outer wall of the butt joint 3 is provided with a second groove 404, the outer wall of the butt joint 3 is provided with a through hole 405 extending into the second groove 404, the inside of the butt joint 3 is slidably connected with a push plate 406 extending into the second groove 404, the outer wall of the push plate 406 is provided with a jack 407 penetrating through the push plate 406, the inside of the push plate 406 is slidably connected with a clamping block 408 extending to the lower part of the push plate 406, a spring 409 is connected between the top end of the clamping block 408 and the push plate 406, one side of the inside of the push plate 406, which is positioned on the clamping block 408, is slidably connected with a push rod 410, and the push rod 410 extends into an inner cavity of the jack 407.
In this embodiment: after the height of the guardrail main body 1 is adjusted through the adjusting mechanism 5, the connecting plate 402 is in a horizontal state (as shown in fig. 4), when two guardrail main bodies 1 are in butt joint, the connecting plate 402 is inserted into a cavity formed between the second groove 404 and the push plate 406, the connecting plate 402 is in contact with the clamping block 408, the clamping block 408 moves into the push plate 406 to extrude the spring 409, then the push plate 406 is pushed to move until the clamping block 408 is in contact with the clamping groove 403, the clamping block 408 is displaced into the clamping groove 403 under the action of the elastic force of the spring 409, so that the connecting plate 402 is prevented from being displaced out of the second groove 404, the connector 2 and the butt joint 3 are fixed, and then the two guardrail main bodies 1 are in butt joint, and at the moment, the through hole 405 and the jack 407 are aligned.
When the connector 2 and the butt joint 3 are separated, the rod-shaped tool with the square cross section is inserted into the through hole 405 and the jack 407, the rod-shaped tool with the square cross section is contacted with the ejector rod 410, the ejector rod 410 is pushed to displace, the ejector rod 410 displaces to push the clamping block 408 to displace, the clamping block 408 displaces out of the clamping groove 403, the fixing of the connecting plate 402 is canceled, and therefore the connecting plate 402 can displace out of the second groove 404 to separate the connector 2 and the butt joint 3.
Referring to fig. 2-5, the adjusting mechanism 5 further includes a movable slot 501, the movable slot 501 is formed in the inner portion of the guardrail main body 1, the movable frame 502 is slidably connected to an inner wall of the movable slot 501, a latch 503 is disposed on an outer wall of the movable frame 502, a spur gear 504 is fixedly connected to one end of the connecting plate 402, a fixed plate 505 is slidably connected to a bottom end of the spur gear 504 in the connector 2, the adjusting mechanism 5 further includes a mounting slot 506, the mounting slot 506 is formed in an outer wall of the connector 2 and is communicated with the first groove 401, a rotating plate 507 is rotatably connected to an inner wall of the mounting slot 506, and a mounting plate 508 is fixedly connected to one end of the push plate 406.
In this embodiment: when the height of the guardrail main body 1 is adjusted, the connecting plate 402 is in a vertical state (as shown in fig. 2), the movable frame 502 is pushed to slide in the movable groove 501, and the height of the guardrail main body 1 is adjusted by adjusting the height of the movable frame 502.
After the adjustment is completed, the connecting plate 402 is rotated, the connecting plate 402 rotates to drive the spur gear 504 to rotate, the spur gear 504 rotates to drive the fixed plate 505 to displace, and the fixed plate 505 displaces to be in contact with the latch 503 and then is clamped with the latch, so that the movable frame 502 is fixed, after the adjustment is completed, the rotating plate 507 enters the inner cavity of the first groove 401 and is in contact with the top end of the connecting plate 402, and thus the connecting plate 402 is fixed (as shown in fig. 4). When connector 2 and butt joint 3 are connected fixedly, push pedal 406 removes and drives mounting panel 508 and remove, and mounting panel 508 displacement and rotor plate 507 contact to prevent that rotor plate 507 from taking place to rotate, and then prevent that connecting plate 402 from taking place not hard up consolidates movable frame 502. Because the real-time height of the movable frame 502 can be reinforced when the connector 2 and the butt joint 3 are in butt joint, the change of the height of the guardrail main body 1 in use is prevented.
Referring to fig. 4-7, the inner walls of the first groove 401 and the second groove 404 are attached to the outer wall of the connecting plate 402, and a cavity is formed between the second groove 404 and the pushing plate 406 to match the connecting plate 402.
In this embodiment: when the two guardrail main bodies 1 are in butt joint, the connecting plate 402 is inserted into a cavity formed between the second groove 404 and the push plate 406, the connecting plate 402 is in contact with the clamping block 408, the clamping block 408 moves into the push plate 406, and the spring 409 is extruded; then, the push plate 406 is pushed to move until the clamping block 408 contacts with the clamping groove 403, and the clamping block 408 is displaced into the clamping groove 403 under the action of the elastic force of the spring 409, so that the displacement of the connecting plate 402 is prevented from exiting the second groove 404, and the connection and fixation between the connector 2 and the butt joint 3 are completed.
Referring to fig. 7, a slant is disposed on one side of the clamping block 408, one end of the ejector rod 410 contacts the slant, and one end of the ejector rod 410 away from the slant is provided with an arc surface.
In this embodiment: when the connector 2 and the butt joint 3 are separated, the rod-shaped tool with the square cross section is inserted into the through hole 405 and the jack 407, the rod-shaped tool with the square cross section is contacted with the ejector rod 410, the ejector rod 410 is pushed to displace, the ejector rod 410 displaces to push the clamping block 408 to displace, the clamping block 408 displaces out of the clamping groove 403, the fixing of the connecting plate 402 is canceled, and the connecting plate 402 can be moved out of the second groove 404, so that the disassembly between two adjacent guardrails is completed.
Referring to fig. 7, a limiting block 6 is fixedly connected to the top end of the ejector rod 410, and a limiting groove 7 for sliding the limiting block 6 is formed in the push plate 406.
In this embodiment: in the process of moving the ejector rod 410, the limiting block 6 slides in the limiting groove 7 to limit the displacement of the ejector rod 410.
Referring to fig. 2-4, the connecting plate 402 is connected to the first groove 401 through a rotating shaft, the spur gear 504 and the rotating shaft are located at the same axial center, a tooth slot is formed at the top end of the fixed plate 505, the spur gear 504 is meshed with the tooth slot, the inner wall of the movable slot 501 is attached to the outer wall of the movable frame 502, and one end of the fixed plate 505 is engaged with the latch 503, so as to fix the movable frame 502.
In this embodiment: the connecting plate 402 is rotated, the connecting plate 402 rotates to drive the spur gear 504 to rotate, the spur gear 504 rotates to drive the fixed plate 505 to displace, and the fixed plate 505 displaces and is clamped with the clamping teeth 503 after contacting, so that the movable frame 502 is fixed.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a metal guardrail, includes guardrail main part (1), the both ends of guardrail main part (1) are provided with connector (2) and butt joint (3) respectively, a serial communication port, connect (2) with butt joint (3) between through coupling mechanism (4), the height of guardrail main part (1) is adjusted through adjustment mechanism (5), adjustment mechanism (5) include movable frame (502), through going up and down to movable frame (502) realize adjusting the height of guardrail main part (1); when the connector (2) is in butt joint with the butt joint (3), the real-time position of the movable frame (502) can be further fixed;
the connecting mechanism (4) comprises a first groove (401), the first groove (401) is formed in the outer wall of the connector (2), the inner wall of the first groove (401) is rotationally connected with a connecting plate (402), the outer wall of the connecting plate (402) is provided with a clamping groove (403), the outer wall of the butt joint (3) is provided with a second groove (404), the outer wall of the butt joint (3) is provided with a through hole (405) extending into the second groove (404), the inside of the butt joint (3) is slidably connected with a push plate (406) extending into the second groove (404), the outer wall of the push plate (406) is provided with a jack (407) penetrating through the push plate (406), the inside of the push plate (406) is slidably connected with a clamping block (408) extending to the lower side of the push plate (406), the top end of the clamping block (408) is connected with a spring (409) between the push plate (406), the inside of the push plate (406) is located at one side of the clamping block (408) and is slidably connected with a push rod (410), and the inner cavity (410) extending into the jack (407).
The adjusting mechanism (5) further comprises a movable groove (501), the movable groove (501) is formed in the guardrail main body (1), the movable frame (502) is connected to the inner wall of the movable groove (501) in a sliding mode, a latch (503) is arranged on the outer wall of the movable frame (502), a spur gear (504) is fixedly connected to one end of the connecting plate (402), and a fixing plate (505) is connected to the inner portion of the connecting head (2) at the bottom end of the spur gear (504) in a sliding mode;
the adjusting mechanism (5) further comprises a mounting groove (506), the mounting groove (506) is formed in the outer wall of the connector (2) and is communicated with the first groove (401), a rotating plate (507) is rotatably connected to the inner wall of the mounting groove (506), and a mounting plate (508) is fixedly connected to one end of the push plate (406).
2. A metal fence as claimed in claim 1, characterized in that the inner walls of the first recess (401) and the second recess (404) are both in contact with the outer wall of the web (402), and that a cavity is formed between the second recess (404) and the push plate (406) to match the web (402).
3. A metal fence as claimed in claim 1, characterized in that a side of the clamping block (408) is provided with a bevel, one end of the ejector rod (410) is in contact with the bevel, and one end of the ejector rod (410) away from the bevel is provided with an arc surface.
4. The metal guardrail according to claim 1, characterized in that the top end of the ejector rod (410) is fixedly connected with a limiting block (6), and a limiting groove (7) for sliding the limiting block (6) is formed in the push plate (406).
5. A metal fence as claimed in claim 2, characterized in that the connection plate (402) and the first recess (401) are connected by a rotation shaft, and the spur gear (504) is arranged coaxially with the rotation shaft.
6. A metal fence as claimed in claim 2, characterized in that the top end of the fixing plate (505) is provided with tooth grooves, and the spur gear (504) is engaged with the tooth grooves.
7. A metal fence according to claim 2, characterized in that the inner wall of the movable groove (501) is attached to the outer wall of the movable frame (502), and one end of the fixing plate (505) is engaged with the latch (503), so as to fix the movable frame (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310722232.7A CN116446720B (en) | 2023-06-19 | 2023-06-19 | Metal guard bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310722232.7A CN116446720B (en) | 2023-06-19 | 2023-06-19 | Metal guard bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116446720A CN116446720A (en) | 2023-07-18 |
| CN116446720B true CN116446720B (en) | 2023-10-20 |
Family
ID=87130630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310722232.7A Active CN116446720B (en) | 2023-06-19 | 2023-06-19 | Metal guard bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116446720B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080272353A1 (en) * | 2007-05-03 | 2008-11-06 | Fattori James G | Apparatus and method for post mount guide |
| US20170058557A1 (en) * | 2015-08-27 | 2017-03-02 | Hudson Hardware & Plastics Co., Limited | Adjustable fence |
| CN208267544U (en) * | 2018-04-25 | 2018-12-21 | 广东中科环境工程技术有限公司 | An adjustable guardrail for the periphery of a sewage treatment station |
| CN209837869U (en) * | 2019-01-26 | 2019-12-24 | 郅新礼 | Construction guardrail |
| CN112252823A (en) * | 2020-10-30 | 2021-01-22 | 广州云弈科技有限公司 | Security protection warning rail guard with monitoring performance |
| CN215520316U (en) * | 2021-05-13 | 2022-01-14 | 重庆昌旭建筑装饰工程有限公司 | Safety barrier for construction |
| CN113982367A (en) * | 2021-12-08 | 2022-01-28 | 国核电力规划设计研究院重庆有限公司 | A protection guardrail for transformer substation construction |
| CN216517259U (en) * | 2021-10-29 | 2022-05-13 | 邦克设计营造(苏州)有限公司 | Height-adjustable guardrail |
| CN217782951U (en) * | 2022-03-07 | 2022-11-11 | 中建八局广西建设有限公司 | Residential building construction guardrail |
-
2023
- 2023-06-19 CN CN202310722232.7A patent/CN116446720B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080272353A1 (en) * | 2007-05-03 | 2008-11-06 | Fattori James G | Apparatus and method for post mount guide |
| US20170058557A1 (en) * | 2015-08-27 | 2017-03-02 | Hudson Hardware & Plastics Co., Limited | Adjustable fence |
| CN208267544U (en) * | 2018-04-25 | 2018-12-21 | 广东中科环境工程技术有限公司 | An adjustable guardrail for the periphery of a sewage treatment station |
| CN209837869U (en) * | 2019-01-26 | 2019-12-24 | 郅新礼 | Construction guardrail |
| CN112252823A (en) * | 2020-10-30 | 2021-01-22 | 广州云弈科技有限公司 | Security protection warning rail guard with monitoring performance |
| CN215520316U (en) * | 2021-05-13 | 2022-01-14 | 重庆昌旭建筑装饰工程有限公司 | Safety barrier for construction |
| CN216517259U (en) * | 2021-10-29 | 2022-05-13 | 邦克设计营造(苏州)有限公司 | Height-adjustable guardrail |
| CN113982367A (en) * | 2021-12-08 | 2022-01-28 | 国核电力规划设计研究院重庆有限公司 | A protection guardrail for transformer substation construction |
| CN217782951U (en) * | 2022-03-07 | 2022-11-11 | 中建八局广西建设有限公司 | Residential building construction guardrail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116446720A (en) | 2023-07-18 |
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