CN114197999A - Steel construction window frame structure - Google Patents
Steel construction window frame structure Download PDFInfo
- Publication number
- CN114197999A CN114197999A CN202111455554.7A CN202111455554A CN114197999A CN 114197999 A CN114197999 A CN 114197999A CN 202111455554 A CN202111455554 A CN 202111455554A CN 114197999 A CN114197999 A CN 114197999A
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- block
- adjusting
- fixedly connected
- sliding
- window frame
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wing Frames And Configurations (AREA)
Abstract
The application relates to a steel structure window frame structure, which relates to the field of doors and windows and comprises a frame and a plurality of upright posts vertically installed in the frame, wherein both ends of each upright post are fixedly connected with sliding sleeves, both ends of each sliding sleeve along the thickness direction of the frame are fixedly connected with adjusting blocks, both side walls of the frame along the length direction of the frame are fixedly provided with racks, the adjusting blocks are rotatably connected with gears, and the gears are meshed with the racks; the adjusting block is provided with an adjusting component for locking the gear; and a protection assembly used for protecting the adjusting assembly is arranged outside the adjusting block. This application has the effect of being convenient for adjust the stand position, guarantees the fixed firm effect between stand and the frame simultaneously, still responds to the performance that has the performance of putting out a fire behind the high temperature.
Description
Technical Field
The utility model relates to a door and window's field especially relates to a steel construction window frame structure.
Background
At present, with the rapid development of economic construction, under the guidance of construction guidelines of circular economy, buildings adopting steel structures are more and more in the field of constructional engineering, with the rapid increase of steel yield in China, the bearing and side resisting systems adopting steel as buildings in industrial and civil construction are gradually increased, the structural system is completely suitable for the 'reuse principle', namely the sustainable development principle, of one of three principles of circular economy, and steel structure window frames need to be matched for use in steel structure building windows.
The current chinese patent with patent application number CN201821488399.2 provides a steel construction window, including casing, glass, delivery port, preceding protection component and back protection component, preceding roll curtain and the through-hole of being equipped with of casing, it is in to roll up the curtain the through-hole top, it can cover to roll up the curtain the through-hole, the through-hole runs through the casing, the through-hole inboard is being arranged preceding protection component glass with the back protection component, preceding protection component includes spreader and a plurality of stand, the spreader is connected the stand, the stand with the through-hole is connected, the back protection component with preceding protection component structural equivalence, the delivery port is provided with a plurality of grooves, the delivery port sets up the interior bottom surface of through-hole.
In view of the above related technologies, the inventor believes that the cross column and the upright column are fixed by welding when the window frame is installed on site, so that a worker cannot adjust the position of the upright column according to the site construction condition in the field installation process of the window frame, and the defect of a narrow application range exists.
Disclosure of Invention
In order to improve the problem that the stand position can not be adjusted, this application provides a steel construction window frame structure.
The application provides a steel construction window frame structure adopts following technical scheme:
a steel structure window frame structure comprises a frame and a plurality of upright posts vertically arranged in the frame, wherein both ends of each upright post are fixedly connected with a sliding sleeve, both ends of each sliding sleeve along the thickness direction of the frame are fixedly connected with adjusting blocks, both side walls of the frame along the length direction of the frame are fixedly provided with racks, the adjusting blocks are rotatably connected with gears, and the gears are meshed with the racks; the adjusting block is provided with an adjusting component for locking the gear; and a protection assembly used for protecting the adjusting assembly is arranged outside the adjusting block.
Through adopting above-mentioned technical scheme, with the sliding sleeve motion on the spreader of frame, this moment under the relative motion effect of gear and rack, the gear is driven to take place to rotate, treat position control completion back, under adjusting part's effect, realize gear revolve's locking effect, the position of stand is fixed firm this moment, accomplishes stand position control work, under protecting part's effect, realizes the protecting effect to adjusting part, ensures that the stand position is firm, extension window frame life.
Optionally, the adjusting part includes slider and rack, the one end of rack be provided with a plurality of tooth's socket and with gear engagement connects, the slider with regulating block sliding connection, the slider with rack fixed connection, the regulating block is provided with the drive assembly of slider motion.
Through adopting above-mentioned technical scheme, drive assembly control slider motion, and drive the rack tooth motion to with gear engagement's position, the rotation of gear this moment is restricted, and then accomplish the locking effect to the stand position.
Optionally, the driving assembly includes a driving ring and a threaded rod, a sliding hole is formed in the bottom surface of the adjusting block, the threaded rod is fixedly connected with one end of the sliding block, which is far away from the rack, the threaded rod and the sliding block are connected in the sliding hole in a sliding manner, the driving ring is connected with the threaded rod in a threaded manner, the driving ring is connected with the supporting block in a rotating manner, and the adjusting block is provided with a limiting part for limiting the rotation of the threaded rod.
Optionally, the limiting part is set as a limiting block, the limiting block is fixedly connected with the inner wall of the sliding hole, a limiting groove is formed in the outer wall of the threaded rod along the axis direction of the threaded rod, the limiting block is connected in the limiting groove in a sliding mode, and two ends of the limiting groove are arranged in a closed mode.
Through adopting above-mentioned technical scheme, drive the threaded rod motion through the drive ring, under the cooperation motion effect between stopper and spacing groove, the rotation of threaded rod is restricted, and the threaded rod moves along the axis direction of slide opening, and the threaded rod drives slider and the rack tooth and moves towards the gear direction.
Optionally, the driving ring is fixedly connected with a rotating block, the supporting block is provided with a rotating groove at the opening of the sliding hole, the rotating block is arranged in an L shape, the cross section of the inner wall of the rotating groove is arranged in a T shape, the vertical section of the rotating block is fixedly connected with the bottom of the driving ring, and the horizontal section of the rotating block is rotatably connected to the large opening of the rotating groove.
By adopting the technical scheme, the movement of the rotating block towards the rotating groove is limited, and the rotating block can only rotate in the rotating groove, so that the effect of rotationally connecting the driving ring and the adjusting block is realized.
Optionally, the protection assembly includes a protection cover, the protection cover is disposed outside the driving ring, the protection cover is a cavity, one end of the protection cover is an opening, the bottom wall of the protection cover is fixedly connected with a plurality of locking rods, the end face of the driving ring is provided with a plurality of locking holes, the locking holes are inserted into the locking holes, and the protection cover is fixedly connected with the adjusting block.
Through adopting above-mentioned technical scheme, establish outside the drive ring when the protection casing cover, the locking lever is pegged graft in the locking hole, realizes the restriction effect to the drive ring pivoted, and the rotation of drive ring is restricted this moment, guarantees the effect of fixing firmly between stand and the frame.
Optionally, a plurality of dead levers of protection casing fixedly connected with, the regulating block is in with a plurality of the equal fixedly connected with screw rod in dead lever corresponding position, the dead lever overcoat is equipped with the thread bush, the thread bush with screw rod threaded connection, the dead lever with be provided with the joint subassembly between the thread bush.
Optionally, the joint subassembly include with joint ring and butt dish, the joint ring with the thread bush is kept away from in the one end fixed connection of screw rod, joint ring cover is located outside the dead lever, the butt dish with the dead lever is close to in the one end fixed connection of screw rod, the joint ring with the butt dish butt.
Through adopting above-mentioned technical scheme, dead lever and butt dish butt, drive thread bush and screw rod threaded connection, the joint ring along the dead lever motion and move to the position with the butt dish butt, the joint ring move to the position with the butt dish butt, realize the fixed effect of dead lever and screw rod.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the sliding sleeve moves on a cross column of the frame, the gear is driven to rotate under the action of relative movement of the gear and the rack, and after the position adjustment is finished, the locking effect on the rotation of the gear is realized under the action of the adjusting assembly;
2. the fixed rod is abutted against the abutting disc, the threaded sleeve is driven to be in threaded connection with the screw, the clamping ring moves along the fixed rod and moves to the position abutted against the abutting disc, and the clamping ring moves to the position abutted against the abutting disc, so that the fixing effect of the fixed rod and the screw is realized;
3. the driving ring is controlled to rotate, under the matching action of the limiting block and the limiting groove, the limiting effect on the threaded rod is achieved, the threaded rod drives the sliding block and the rack teeth to move towards the direction of the gear, the rotation of the gear is limited at the moment, and then the locking effect on the movement of the adjusting block is achieved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of an adjustment assembly and a shield assembly in an embodiment of the present application;
fig. 3 is an enlarged schematic view at a in fig. 2.
Reference numerals: 1. a frame; 2. a column; 3. a sliding sleeve; 4. an adjusting block; 5. a rack; 6. a gear; 7. a slider; 8. rack teeth; 9. a drive ring; 10. a threaded rod; 11. a slide hole; 12. a limiting block; 13. a limiting groove; 14. rotating the block; 15. a rotating groove; 16. a protective cover; 17. a locking lever; 18. a locking hole; 19. fixing the rod; 20. a screw; 21. a threaded sleeve; 22. a snap ring; 23. a butting tray; 24. a cage body; 25. a glass ball; 26. and (4) crushing the ball.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses steel construction window frame structure. Referring to fig. 1 and 2, a steel construction window frame structure includes frame 1 and a plurality of vertical column 2 of installing in frame 1, the equal fixedly connected with slider 7 in both ends of stand 2, stand 2 along the equal fixedly connected with sliding sleeve 3 in both ends of vertical direction, sliding sleeve 3 sets up to the type of Chinese character 'ao', and 3 covers of sliding sleeve establish slide outside the spreader of frame 1, under the limiting displacement of two sliding sleeves 3, guarantee that stand 2 is in vertical state at the in-process that slides.
Sliding sleeve 3 is along the equal fixedly connected with regulating block 4 in both ends of 1 thickness direction of frame, regulating block 4 also sets up to type of calligraphy, the equal fixedly connected with rack 5 in its length direction's both sides is followed to the spreader of frame 1, regulating block 4 rotates and is connected with gear 6, the axis direction of axis of rotation sets up and sets up along 5 length direction of perpendicular to rack for the level between gear 6 and the regulating block 4, gear 6 is located 5 below of rack, gear 6 is connected with the meshing of rack 5, when stand 2 slides on the spreader of frame 1, gear 6 takes place to rotate, regulating block 4 is provided with the adjusting part who is used for locking gear 6.
Referring to fig. 1 and 2, the adjusting assembly comprises a slide block 7 and a rack 8, one end of the rack 8 is provided with a plurality of tooth grooves and is meshed with the gear 6, the slide block 7 is connected with the adjusting block 4 in a sliding manner, the slide block 7 is fixedly connected with one end of the rack 8 far away from the tooth grooves, the side wall of the bottom of the adjusting block 4 is provided with a slide hole 11, the slide block 7 is connected in the slide hole 11 in a sliding manner, the slide hole 11 is arranged in a penetrating manner and is vertically arranged along the vertical direction, the adjusting block 4 is provided with a driving assembly for driving the slide block 7 to move, the driving assembly comprises a driving ring 9 and a threaded rod 10, the threaded rod 10 is fixedly connected with one end of the slide block 7 far away from the rack 8, the threaded rod 10 is connected in the slide hole 11 in a sliding manner, the inner wall of the driving ring 9 is arranged in a hollow manner and is provided with a threaded groove, the driving ring 9 is connected with the threaded rod 10 in a threaded manner, and the driving ring 9 is rotatably connected with the side wall of the bottom of the supporting block;
one end of the driving ring 9 close to the adjusting block 4 is fixedly connected with two rotating blocks 14, the rotating blocks 14 are L-shaped, a rotating groove 15 is formed in the opening of the sliding hole 11 of each supporting block, the section of the inner wall of the rotating groove 15 is T-shaped, the vertical section of each rotating block 14 is fixedly connected with the bottom of the driving ring 9, the horizontal section of each rotating block 14 is rotatably connected to the part with the large opening of the rotating groove 15, the rotating blocks 14 rotate in the rotating grooves 15, and the movement towards the opening of the rotating groove 15 is limited;
the adjusting block 4 is provided with a limiting part for limiting the rotation of the threaded rod 10, the limiting part is set as a limiting block 12, the limiting block 12 is fixedly connected with the side wall of the sliding hole 11, the circumferential outer wall of the threaded rod 10 is provided with a limiting groove 13 along the axial direction thereof, two ends of the limiting groove 13 are arranged in a closed manner, the limiting block 12 is connected in the limiting groove 13 in a sliding manner, after the position adjustment of the upright post 2 is completed, the threaded rod 10 is driven to move by the driving ring 9, under the action of the matching motion between the limiting block 12 and the limiting groove 13, the rotation of the threaded rod 10 is limited, the threaded rod 10 moves along the axial direction of the slide hole 11, the threaded rod 10 drives the slide block 7 and the rack teeth 8 to move towards the gear 6, the moving direction of the rack teeth 8 is vertically arranged and along the axial direction vertical to the gear 6, when the rack 8 is engaged with the gear 6, the gear 6 is restricted from rotating, and therefore the movement of the column 2 is restricted.
Regulating block 4 is closed setting along 5 length direction's of rack both ends, the notch of regulating block 4 is the opening setting towards one side of rack 5, the opening of regulating block 4 notch is in frame 1 and 5 laminating of rack, treat 2 position adjustment completions backs of stand, sealed glue of gap department coating at regulating block 4 and rack 5 and frame 1's spreader hookup location, treat sealed glue solidification back, regulating block 4 forms sealed glue film with rack 5 and frame 1 hookup location, guarantee the inside sealing performance of regulating block 4, and then guarantee frame 1's leakproofness, also can prolong gear 6's life.
Referring to fig. 2 and 3, the adjusting block 4 is provided with a protection assembly for protecting the adjusting assembly, the protection assembly includes a protection cover 16, the protection cover 16 is provided with a cavity, one end of the protection cover is provided with an opening, the protection cover 16 is sleeved outside the driving ring 9, the protection cover 16 is covered outside the driving ring 9, the protection cover 16 is provided with a cavity, and one end of the protection cover is provided with an opening, two locking rods 17 are fixedly connected to the bottom wall of the protection cover 16, two locking holes 18 are provided on the end surface of the driving ring 9, the two locking holes 18 are symmetrically arranged relative to the axial direction of the driving ring 9, the locking rods 17 are inserted into the locking holes 18, the protection cover 16 is fixedly connected with the adjusting block 4, under the matching action of the locking rods 17 and the locking holes 18, the clamping locking effect on the driving ring 9 is further realized, and the stability of the meshing action between the rack teeth 8 and the gear 6 is ensured.
The protective cover 16 is fixedly connected with two fixing rods 19, the two fixing rods 19 are symmetrically arranged relative to the vertical axis direction of the driving ring 9, the adjusting block 4 is fixedly connected with a screw rod 20 at the position corresponding to the two fixing rods 19, a thread sleeve 21 is sleeved outside the fixing rod 19, the thread sleeve 21 is in threaded connection with the screw rod 20, the end part of the fixing rod 19 is abutted against the end part of the screw rod 20, a clamping assembly is arranged between the fixing rod 19 and the thread sleeve 21 and comprises a clamping ring 22 and an abutting disc 23, the clamping ring 22 is fixedly connected with one end, far away from the screw rod 20, of the thread sleeve 21, the clamping ring 22 is sleeved outside the fixing rod 19 in a sliding manner, the abutting disc 23 is fixedly connected with one end, close to the screw rod 20, of the abutting disc 23 is abutted against the screw rod 20, the driving thread sleeve 21 is in threaded connection with the screw rod 20, the clamping ring 22 moves along the length direction of the fixing rod 19, and when the clamping ring 22 moves to abut against the abutting disc 23, the clamping ring 22 and the abutting disc 23 are mutually dragged, and the screw 20 and the threaded sleeve 21 are in threaded connection, so that the protective cover 16 is fixed and fixed firmly.
Referring to fig. 2 and 3, in order to improve the fireproof performance of the window frame, a cage body 24 is mounted on the bottom surface of an adjusting block 4 at the upper end of an upright post 2, a glass ball 25 is placed in the cage body 24, dry powder is filled in the glass ball 25, the glass ball 25 and the cage body 24 can be bonded by glue, a crushing hole is formed in the side wall of the glass ball 25, a crushing ball 26 is mounted on the glass ball 25 at the position of the crushing hole, the crushing ball 26 is also made of glass, and kerosene is filled in the crushing ball 26; when the conflagration breaing out, because kerosene preheats can the inflation, lead to glass ball 25 also broken after broken 26 of broken ball this moment, drop in glass ball 25 when broken back dry powder of glass ball 25, realize the effect of putting out a fire of dry powder, promote the fire extinguishing performance of window frame.
The implementation principle of the steel structure window frame structure of the embodiment of the application is as follows: the driving sliding sleeve 3 slides along the length direction of the cross column of the frame 1, the gear 6 rotates under the driving action of the rack 5 at the moment, after the position of the upright column 2 is adjusted, the driving ring 9 is controlled to rotate, the limiting effect on the threaded rod 10 is realized under the matching action of the limiting block 12 and the limiting groove 13, the threaded rod 10 drives the sliding block 7 and the rack teeth 8 to move towards the gear 6, the rotation of the gear 6 is limited at the moment, and the locking effect on the movement of the adjusting block 4 is further realized;
establish the protection casing 16 cover outside the drive ring 9, dead lever 19 and butt disc 23 butt, drive thread bush 21 and screw rod 20 threaded connection, joint ring 22 moves along dead lever 19 and moves to the position with butt disc 23 butt, joint ring 22 moves to the position with butt disc 23 butt, realize dead lever 19 and screw rod 20's fixed effect, locking lever 17 pegs graft in locking hole 18 this moment, the realization is to the pivoted limited effect of drive ring 9, further guarantee the firm effect in stand 2 position.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a steel construction window frame structure which characterized in that: the vertical column type lifting device comprises a frame (1) and a plurality of vertical columns (2) vertically installed in the frame (1), wherein sliding sleeves (3) are fixedly connected to two ends of each vertical column (2), adjusting blocks (4) are fixedly connected to two ends of each sliding sleeve (3) along the thickness direction of the frame (1), racks (5) are fixedly installed on two side walls of the frame (1) along the length direction of the frame, the adjusting blocks (4) are rotatably connected with gears (6), and the gears (6) are meshed and connected with the racks (5); the adjusting block (4) is provided with an adjusting component for locking the gear (6); and a protection assembly used for protecting the adjusting assembly is arranged outside the adjusting block (4).
2. The steel structural window frame structure of claim 1, wherein: the adjusting component comprises a sliding block (7) and a rack (8), one end of the rack (8) is provided with a plurality of tooth grooves and is connected with the gear (6) in a meshed mode, the sliding block (7) is connected with the adjusting block (4) in a sliding mode, the sliding block (7) is fixedly connected with the rack (8), and the adjusting block (4) is provided with a driving component for driving the sliding block (7) to move.
3. The steel structural window frame structure of claim 2, wherein: the driving assembly comprises a driving ring (9) and a threaded rod (10), a sliding hole (11) is formed in the bottom surface of the adjusting block (4), the threaded rod (10) is fixedly connected with one end of the sliding block (7) far away from the rack (8), the threaded rod (10) is connected with the sliding block (7) in the sliding hole (11) in a sliding mode, the driving ring (9) is connected with the threaded rod (10) in a threaded mode, the driving ring (9) is connected with the adjusting block (4) in a rotating mode, and the adjusting block (4) is provided with a limiting part for limiting the rotation of the threaded rod (10).
4. A steel structural window frame structure according to claim 3, wherein: the locating part sets up to stopper (12), stopper (12) with slide opening (11) inner wall fixed connection, threaded rod (10) outer wall along spacing groove (13) have been seted up to the axis direction of threaded rod (10), stopper (12) sliding connection in spacing groove (13), the both ends of spacing groove (13) are closed setting.
5. A steel structural window frame structure according to claim 3, wherein: the adjusting mechanism is characterized in that a rotating block (14) is fixedly connected to the driving ring (9), a rotating groove (15) is formed in the opening of the sliding hole (11) of the adjusting block (4), the rotating block (14) is L-shaped, the cross section of the inner wall of the rotating groove (15) is T-shaped, the vertical section of the rotating block (14) is fixedly connected with the bottom of the driving ring (9), and the horizontal section of the rotating block (14) is rotatably connected to the large opening of the rotating groove (15).
6. A steel structural window frame structure according to claim 3, wherein: the protection assembly comprises a protection cover (16), the protection cover (16) is covered outside the driving ring (9), the protection cover (16) is arranged for a cavity, one end of the protection cover is arranged for an opening, a plurality of locking rods (17) are fixedly connected to the bottom wall of the protection cover (16), a plurality of locking holes (18) are formed in the end face of the driving ring (9), the locking holes (18) are inserted into the locking holes (18), and the protection cover (16) is fixedly connected with the adjusting block (4).
7. The steel structural window frame structure of claim 6, wherein: the utility model discloses a safety protection casing, protection casing (16) a plurality of dead levers of fixedly connected with (19), regulating block (4) are in with a plurality of dead lever (19) correspond equal fixedly connected with screw rod (20) in position, dead lever (19) overcoat is equipped with thread bush (21), thread bush (21) with screw rod (20) threaded connection, dead lever (19) with be provided with the joint subassembly between thread bush (21).
8. The steel structural window frame structure of claim 7, wherein: the joint subassembly include with joint ring (22) and butt dish (23), joint ring (22) with thread bush (21) keep away from in the one end fixed connection of screw rod (20), joint ring (22) cover is located outside dead lever (19), butt dish (23) with dead lever (19) are close to in the one end fixed connection of screw rod (20), joint ring (22) with butt dish (23) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455554.7A CN114197999A (en) | 2021-12-01 | 2021-12-01 | Steel construction window frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455554.7A CN114197999A (en) | 2021-12-01 | 2021-12-01 | Steel construction window frame structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114197999A true CN114197999A (en) | 2022-03-18 |
Family
ID=80650020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111455554.7A Pending CN114197999A (en) | 2021-12-01 | 2021-12-01 | Steel construction window frame structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114197999A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015873A (en) * | 2013-01-05 | 2013-04-03 | 孝感三江航天江峰工贸有限责任公司 | Aluminum alloy window provided with protective handrail |
| CN209385032U (en) * | 2018-09-12 | 2019-09-13 | 天津万纳源荣钢结构制造有限公司 | A kind of steel structure window |
| CN111962853A (en) * | 2020-07-19 | 2020-11-20 | 周团结 | Protection device for high-rise building construction and use method thereof |
| CN214117747U (en) * | 2020-12-28 | 2021-09-03 | 苗大勇 | Building construction safety rail guard convenient to adjust |
-
2021
- 2021-12-01 CN CN202111455554.7A patent/CN114197999A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015873A (en) * | 2013-01-05 | 2013-04-03 | 孝感三江航天江峰工贸有限责任公司 | Aluminum alloy window provided with protective handrail |
| CN209385032U (en) * | 2018-09-12 | 2019-09-13 | 天津万纳源荣钢结构制造有限公司 | A kind of steel structure window |
| CN111962853A (en) * | 2020-07-19 | 2020-11-20 | 周团结 | Protection device for high-rise building construction and use method thereof |
| CN214117747U (en) * | 2020-12-28 | 2021-09-03 | 苗大勇 | Building construction safety rail guard convenient to adjust |
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