CN114059787A - Can adjust level entrance to a cave protector that turnover was used in a flexible way - Google Patents
Can adjust level entrance to a cave protector that turnover was used in a flexible way Download PDFInfo
- Publication number
- CN114059787A CN114059787A CN202111359515.7A CN202111359515A CN114059787A CN 114059787 A CN114059787 A CN 114059787A CN 202111359515 A CN202111359515 A CN 202111359515A CN 114059787 A CN114059787 A CN 114059787A
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- rod
- cross
- floor
- plate
- limiting plate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3223—Means supported by building floors or flat roofs, e.g. safety railings
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Floor Finish (AREA)
Abstract
The invention relates to the technical field of floor hole protection, in particular to a horizontal hole protection device capable of being flexibly adjusted and used in a turnover manner, which comprises a cover plate, wherein the cover plate covers the upper end of a hole of a floor, a cross rod clamped with the floor is arranged on the upper end surface of the cover plate, four groups of adjusting grooves distributed in a circumferential array are arranged on the upper end surface of the cover plate between adjacent rod pieces of the cross rod in a penetrating manner, and connecting screw rods fixedly connected with the floor are respectively vertically arranged on the four groups of adjusting grooves distributed in the circumferential array, and the horizontal hole protection device has the advantages that: through setting up the commentaries on classics board of rotary type pressfitting to increase and the dislocation length between the floor, improve the area of pressfitting, the bearing strength of increase apron, simultaneously through the cooperation of inserting post and jack on the commentaries on classics board, realize the dislocation formula of apron and peg graft, the position joint that utilizes the card lid makes the apron card die, avoids the apron to be turned up at will, has further improved the security.
Description
Technical Field
The invention relates to the technical field of floor hole protection, in particular to a horizontal hole protection device capable of being flexibly adjusted and used in a turnover manner.
Background
With the rapid development of national economy, the living standard is increasingly improved, and elevators are more and more popularized in various building projects regardless of high-rise buildings or multi-story buildings; in the construction process of the building engineering, the horizontal hole of the structural slab also brings great potential safety hazard to constructors; the safety accidents caused by stumbling of personnel in the air are prevented, and meanwhile, the condition that the lower-layer personnel are injured after the objects fall during cross operation is also prevented, so that the safety protection of the flue hole, the pipe well hole and the like on the structural plate is required to be made is very important.
The existing hole cover plate is lack of a fixing device, the connection strength of the connection position of the cover plate is low, and once the cover plate is subjected to external force, looseness is easily generated, so that the cover plate deviates, the hole is exposed, and the safety protection is enabled to be defective.
Therefore, the horizontal hole protective device capable of being flexibly adjusted and used in a turnover manner is provided, so that the problems of adjusting, mounting and fixed connection of the cover plate are solved.
Disclosure of Invention
The invention aims to provide a horizontal cave entrance protective device capable of being flexibly adjusted and used in a turnover way, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a horizontal hole opening protection device capable of being flexibly adjusted and used in a turnover mode comprises a cover plate, wherein the cover plate covers the upper end of a hole opening of a floor slab, a cross rod clamped with the floor slab is arranged on the upper end face of the cover plate, four groups of adjusting grooves distributed in a circumferential array mode are arranged on the upper end face of the cover plate and are positioned between adjacent rod pieces of the cross rod in a penetrating mode, connecting screw rods fixedly connected with the floor slab are vertically arranged on the four groups of adjusting grooves distributed in the circumferential array mode respectively, a lifting pipe in sliding plug-in connection with a cross beam is vertically arranged in the middle of the lower end of the cover plate, the upper end of the lifting pipe is provided with a clamping cover clamped with the cross rod, the upper end of the cross beam is provided with a lifting adjusting rod inserted in the inner cavity of the lifting pipe in a sliding way, the end parts of the two ends of the cross beam are rotatably provided with rotating plates, the upper end of the rotating plate is pressed with a T-shaped extending plate fixed at the lower end of the connecting screw rod, and the rotating plate and the T-shaped extending plate are pressed on the lower end face of the floor slab.
Preferably, the upper end of the cover plate is provided with vertically staggered cross grooves, the cross rods are clamped in the cross grooves, four groups of embedded rods corresponding to the free ends of the cross rods are installed on the floor in a pre-embedded mode, and sleeve columns sleeved on the embedded rods are arranged at the end portions of the free ends of the cross rods.
Preferably, the adjusting groove comprises clamping grooves which are linearly distributed and straight grooves communicated with a plurality of groups of clamping grooves, the inner diameters of the clamping grooves and the straight grooves are equal to the outer diameter of the connecting screw rod, the upper end of the connecting screw rod is pressed on the upper end face of the adjusting groove through a locking nut, and the connecting screw rod is inserted in a position close to the inner wall of the floor slab opening through the adjusting groove.
Preferably, the lower end part of the connecting screw rod is provided with a nut, the upper end of the nut is pressed on the lower end face of the floor slab, and the nut is fixedly connected with one end of the T-shaped extension plate through a connecting rod.
Preferably, the inner chamber of the elevator pipe is vertically arranged to be a stepped inner chamber, the lower end of the elevator pipe is provided with a limiting plate installed in a threaded manner, a first limiting plate is arranged on the outer wall of the middle section of the lifting adjusting rod, the lifting adjusting rod is slidably inserted into the vertical stepped inner chamber of the elevator pipe, the first limiting plate is pressed in the vertical stepped inner chamber, a spring sleeved on the outer wall of the lifting adjusting rod is vertically arranged at the lower end of the first limiting plate, and the spring is pressed between the first limiting plate and the limiting plate.
Preferably, the upper end of lift adjustment pole is provided with the second limiting plate, second limiting plate slidable mounting is at the lower extreme of cross rod, and the upper end of second limiting plate is provided with the card lid of connecting through the stay cord, the card lid upper end is provided with the pull ring, and the outer wall of card lid is provided with a pair of arch that the circumference array distributes, protruding rotation block is in the inner chamber of cross rod.
Preferably, the both ends of crossbeam are provided with the free bearing, are provided with the leading wheel between crossbeam and the lift adjustment pole, the one end of changeing the board is passed through the free bearing and is rotated and install on the crossbeam, and the upper end of changeing board and crossbeam is run through and is provided with the wire casing, the up end at changeing the board is fixed to the one end of stay cord, and the vertical extension of the edge wire casing of stay cord and leading wheel is to the lift adjustment pole in, and the upper end of stay cord slides and runs through the lift adjustment pole and fix the lower extreme at the card lid.
Preferably, the lower end part of the cross beam is provided with a stop block, the upper end part of the rotating plate is vertically provided with an inserting column, the lower end of the T-shaped extending plate is provided with an inserting hole, and the inserting column is inserted into the inserting hole.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the adjustable groove with an adjustable position and the connecting screw rod connected in an up-and-down clamping manner are arranged, so that the clamping connection between the cover plate and the inner wall of the floor slab opening is realized, the connecting strength of the cover plate is greatly improved, and the cover plate is prevented from being inclined in a rotating manner;
2. according to the invention, the rotary pressing rotating plate is arranged, so that the dislocation length between the rotary pressing rotating plate and the floor slab is increased, the pressing area is increased, the bearing strength of the cover plate is increased, meanwhile, through the matching of the insertion columns on the rotating plate and the insertion holes, the dislocation type insertion of the cover plate is realized, the cover plate is clamped by utilizing the position clamping of the clamping cover, the cover plate is prevented from being turned up at will, and the safety is further improved.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the installation of the present invention;
FIG. 4 is a schematic perspective view of a beam according to the present invention;
FIG. 5 is a schematic perspective view of the connecting screw of the present invention;
fig. 6 is a schematic perspective view of a rotating plate according to the present invention.
In the figure: 1. a floor slab; 2. a cover plate; 3. an adjustment groove; 4. a straight groove; 5. a card slot; 6. a cross groove; 7. a cross bar; 8. sleeving a column; 9. a cover is clamped; 10. connecting a screw rod; 11. locking the nut; 12. a pull ring; 13. a lifting pipe; 14. pre-burying a rod; 15. a spring; 16. a cross beam; 17. rotating the plate; 18. a T-shaped extension plate; 19. inserting a column; 20. a stopper; 21. hinging seat; 22. pulling a rope; 23. a wire slot; 24. a guide wheel; 25. a lifting adjusting rod; 26. a connecting rod; 27. a jack; 28. a nut; 29. a first limit plate; 30. a second limiting plate; 31. and (4) protruding.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
the utility model provides a can adjust level entrance to a cave protector that turnover was used in a flexible way, including apron 2, apron 2 covers in floor 1's entrance to a cave upper end, 2 up end of apron are provided with the cross 7 with floor 1 joint, the upper end of apron 2 is provided with perpendicular crisscross cross 6, 7 joints of cross rod are in cross 6, pre-buried four groups of embedded rods 14 who installs and correspond with 7 free ends of cross rod on floor 1, the free end tip of cross rod 7 is provided with the loop post 8 of cup jointing on embedded rod 14, through the grafting of loop post 8 on embedded rod 14, realize the position installation of cross rod 7.
The upper end surface of the cover plate 2 is positioned between the adjacent rods of the cross rod 7 and is provided with four groups of adjusting grooves 3 distributed in a circumferential array mode in a penetrating mode, the four groups of adjusting grooves 3 distributed in the circumferential array mode are vertically provided with connecting screw rods 10 fixedly connected with a floor slab 1 respectively, the adjusting grooves 3 comprise clamping grooves 5 distributed in a linear mode and straight grooves 4 communicated with multiple groups of clamping grooves 5, the inner diameters of the clamping grooves 5 and the straight grooves 4 are equal to the outer diameters of the connecting screw rods 10, the connecting screw rods 10 are connected with the positions close to the inner wall of the opening of the floor slab in a plugging mode through the adjusting grooves 3, the adjusting grooves 3 formed by the straight grooves 4 and the clamping grooves 5 are used for adjusting the positions of the connecting screw rods 10, and the connecting screw rods 10 are connected with the positions closest to the inner wall of the opening in a plugging mode.
The upper end of connecting screw rod 10 is through the up end of lock nut 11 pressfitting at adjustment tank 3, the lower extreme tip of connecting screw rod 10 is provided with nut 28, the upper end pressfitting of nut 28 is at the lower terminal surface of floor 1, the one end of T shape extension board 18 is fixed connection through connecting rod 26 on the nut 28, through the cooperation of nut 28 and lock nut 11, realize the fixed mounting of centre gripping formula, make apron 2 fix on floor 1 entrance to a cave inner wall through the centre gripping of connecting screw rod 10, reach apron 2 fixed mounting's purpose.
The riser 13 of crossbeam 16 is pegged graft to vertical being provided with in the middle of apron 2's the lower extreme, the upper end of crossbeam 16 is provided with the lift adjustment pole 25 of pegging graft at the riser 13 inner chamber that slides, the vertical setting of riser 13's inner chamber is the ladder inner chamber, the lower extreme of riser 13 is provided with the limiting plate of threaded mounting, be provided with first limiting plate 29 on the interlude outer wall of lift adjustment pole 25, lift adjustment pole 25 slides and pegs graft in the vertical ladder inner chamber of riser 13, first limiting plate 29 pressfitting is in vertical ladder inner chamber, and the vertical spring 15 of cup jointing on lift adjustment pole 25 outer wall that is provided with of the lower extreme of first limiting plate 29, spring 15 pressfitting is between first limiting plate 29 and limiting plate, realize applying the extrusion force to spring 15 through lift adjustment pole 25, thereby make crossbeam 16 descend, make crossbeam 16 descend to the lower extreme of floor 1.
The end parts of the two ends of the cross beam 16 are rotatably provided with rotating plates 17, the two ends of the cross beam 16 are provided with hinged supports 21, guide wheels 24 are arranged between the cross beam 16 and a lifting adjusting rod 25, one end of each rotating plate 17 is rotatably arranged on the cross beam 16 through the hinged support 21, and the rotating plates 17 are rotatably arranged through the hinged supports 21.
The upper ends of the rotating plate 17 and the cross beam 16 are provided with a wire groove 23 in a penetrating mode, one end of a pull rope 22 is fixed on the upper end face of the rotating plate 17, the pull rope 22 vertically extends into a lifting adjusting rod 25 along the wire groove 23 and a guide wheel 24, the upper end of the pull rope 22 slidably penetrates through the lifting adjusting rod 25 and is fixed at the lower end of the clamping cover 9, the lower end of the cross beam 16 is provided with a stop block 20, when the clamping cover 9 and the lifting adjusting rod 25 are pressed downwards, the spring 15 is compressed, the pull rope 22 extends downwards, the rotating plate 17 rotates downwards relatively, the rotating plate 17 is limited by the stop block 20 to rotate, the rotating plate 17 is enabled to be inclined relatively between the rotating plate 17 and the cross beam 16, the rotating plate 17 is prevented from being perpendicular to the cross beam 16, and the rotating plate 17 cannot be pulled.
The upper end of the rotating plate 17 is pressed with a T-shaped extending plate 18 fixed at the lower end of the connecting screw rod 10, the rotating plate 17 and the T-shaped extending plate 18 are pressed on the lower end face of the floor slab 1, the upper end of the rotating plate 17 is vertically provided with an inserting column 19, the lower end of the T-shaped extending plate 18 is provided with an inserting hole 27, the inserting column 19 is inserted into the inserting hole 27, the upper end of the clamping cover 9 is provided with a pull ring 12, a lifting adjusting rod 25 and the clamping cover 9 are loosened, the cross beam 16 rises under the reset elasticity of the spring 15, the pull rope 22 and the clamping cover 9 are pulled by the pull ring 12 to be separated from the lifting adjusting rod 25 to rise, the rotating plate 17 rotates relatively under the traction of the pull rope 22, the inserting column 19 and the inserting hole 27 are inserted, and the staggered clamping connection of the lower end of the cover plate 2 is realized.
The upper end of fall way 13 is provided with the card lid 9 with 7 joints of cross bar, the upper end of lift adjustment pole 25 is provided with second limiting plate 30, second limiting plate 30 slidable mounting is at the lower extreme of cross bar 7, the upper end of second limiting plate 30 is provided with the card lid 9 of connecting through stay cord 22, the outer wall of card lid 9 is provided with a pair of arch 31 of circumference array distribution, arch 31 rotates the block in the inner chamber of cross bar 7, realize the rigidity of card lid 9 on cross bar 7 through arch 31, and then make the inseparable pressfitting of commentaries on classics board 17 on T shape extension board 18, under the prerequisite of not taking off card lid 9, can' T realize the turning up of apron 2, and then improved the installation intensity and the security of apron 2, reach the purpose of fixed cross bar 7 through the downward pressfitting of card lid 9 simultaneously.
The working principle is as follows: at first through the grafting of cover post 8 on pre-buried pole 14, realize the position installation of cross bar 7, utilize the adjustment tank 3 that straight flute 4 and draw-in groove 5 are constituteed to realize the regulation of connecting screw rod 10 position, make connecting screw rod 10 peg graft in the position that is closest apart from the entrance to a cave inner wall, through the cooperation of nut 28 and lock nut 11, realize the fixed mounting of centre gripping formula, make apron 2 fix on 1 entrance to a cave inner wall of floor through the centre gripping of connecting screw rod 10, reach apron 2 fixed mounting's purpose.
Realize exerting the extrusion force to spring 15 through lift adjustment pole 25, thereby make crossbeam 16 descend, make crossbeam 16 descend to floor 1's lower extreme, realize commentaries on classics board 17's rotation installation through free bearing 21, when card lid 9 and lift adjustment pole 25 push down, spring 15 is compressed, stay cord 22 downwardly extending, commentaries on classics board 17 rotates downwards relatively, bottom of revolving board 17's rotation is injectd through setting up dog 20, make and keep relative slope between commentaries on classics board 17 and the crossbeam 16, it is perpendicular with crossbeam 16 to avoid changeing board 17, cause and can't pull commentaries on classics board 17.
Loosening lift adjustment pole 25 and card lid 9, under the elasticity that resets of spring 15, crossbeam 16 rises, pull stay cord 22 and card lid 9 through pull ring 12 and break away from lift adjustment pole 25 and rise, under the traction of stay cord 22, commentaries on classics board 17 rotates relatively, realize inserting the grafting of post 19 and jack 27, and then realize the dislocation joint of apron 2 lower extreme, realize the rigidity of card lid 9 on cross pole 7 through arch 31, and then make commentaries on classics board 17 closely the pressfitting on T shape extension board 18, under the prerequisite of not taking off card lid 9, can' T realize the turn-up of apron 2, and then improved the installation intensity and the security of apron 2, reach the purpose of fixed cross pole 7 through the downward pressfitting of card lid 9 simultaneously.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a can adjust level entrance to a cave protector that turnover was used in a flexible way, includes apron (2), its characterized in that: the floor slab is characterized in that the cover plate (2) covers the upper end of an opening of the floor slab (1), cross rods (7) clamped with the floor slab (1) are arranged on the upper end face of the cover plate (2), four groups of adjusting grooves (3) distributed in a circumferential array are arranged between adjacent rod pieces of the cross rods (7) in a penetrating manner on the upper end face of the cover plate (2), connecting screw rods (10) fixedly connected with the floor slab (1) are respectively and vertically arranged on the four groups of adjusting grooves (3) distributed in the circumferential array, a lifting pipe (13) of a sliding plug-in cross beam (16) is vertically arranged in the middle of the lower end of the cover plate (2), a clamping cover (9) clamped with the cross rods (7) is arranged on the upper end of the lifting pipe (13), a lifting adjusting rod (25) inserted in the inner cavity of the lifting pipe (13) in a sliding manner is arranged on the upper end of the cross beam (16), rotating plates (17) are rotatably arranged on the end parts of the cross beam (16), a T-shaped extending plate (18) fixed on the lower end of the connecting screw rods (10) in a pressing manner is arranged on the rotating plate (17), the rotating plate (17) and the T-shaped extension plate (18) are pressed on the lower end surface of the floor slab (1).
2. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 1, is characterized in that: the upper end of apron (2) is provided with perpendicular crisscross cross groove (6), cross rod (7) joint is in cross groove (6), pre-buried four groups of embedded rods (14) of installing and corresponding with cross rod (7) free end on floor (1), and the free end tip of cross rod (7) is provided with sleeve post (8) of cup jointing on embedded rod (14).
3. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 1, is characterized in that: the adjusting groove (3) comprises clamping grooves (5) which are linearly distributed and straight grooves (4) which are communicated with a plurality of groups of clamping grooves (5), the inner diameters of the clamping grooves (5) and the straight grooves (4) are equal to the outer diameter of a connecting screw rod (10), the upper end of the connecting screw rod (10) is pressed on the upper end surface of the adjusting groove (3) through a locking nut (11), and the connecting screw rod (10) is inserted into the position close to the inner wall of the opening of the floor slab (1) through the adjusting groove (3).
4. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 3, is characterized in that: the lower extreme tip of connecting screw (10) is provided with nut (28), the lower terminal surface of floor (1) is pressfitting in the upper end pressfitting of nut (28), and one end of T shape extension board (18) is connected through connecting rod (26) fixed connection on nut (28).
5. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 1, is characterized in that: the inner chamber of fall way (13) is vertical to be set up to the ladder inner chamber, and the lower extreme of fall way (13) is provided with the limiting plate of screw thread installation, be provided with first limiting plate (29) on the interlude outer wall of lift adjustment pole (25), lift adjustment pole (25) slide and peg graft in the vertical ladder inner chamber of fall way (13), first limiting plate (29) pressfitting is in vertical ladder inner chamber, and the vertical spring (15) of cup jointing on lift adjustment pole (25) outer wall that is provided with of lower extreme of first limiting plate (29), spring (15) pressfitting is between first limiting plate (29) and limiting plate.
6. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 5, is characterized in that: the upper end of lift adjustment pole (25) is provided with second limiting plate (30), second limiting plate (30) slidable mounting is at the lower extreme of cross rod (7), and the upper end of second limiting plate (30) is provided with card lid (9) of connecting through stay cord (22), card lid (9) upper end is provided with pull ring (12), and the outer wall of card lid (9) is provided with a pair of arch (31) that the circumference array distributes, arch (31) rotate the block in the inner chamber of cross rod (7).
7. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 6, is characterized in that: the utility model discloses a lifting device, including crossbeam (16), commentaries on classics board (17), runner (24), pivot seat (21), change board (17) and lift adjustment pole (25), the one end of board (17) is passed through pivot seat (21) and is rotated and install on crossbeam (16), and the upper end of board (17) and crossbeam (16) runs through and is provided with wire casing (23), the one end of stay cord (22) is fixed in the up end of changeing board (17), and the vertical extension of groove (23) and runner (24) along the line of stay cord (22) is to lift adjustment pole (25), and the upper end of stay cord (22) slides and runs through lift adjustment pole (25) and fix the lower extreme at card lid (9).
8. The horizontal portal protection device capable of being flexibly adjusted for turnover use according to claim 7, is characterized in that: the lower end part of the cross beam (16) is provided with a stop block (20), the upper end part of the rotating plate (17) is vertically provided with an inserting column (19), the lower end of the T-shaped extending plate (18) is provided with an inserting hole (27), and the inserting column (19) is inserted into the inserting hole (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111359515.7A CN114059787B (en) | 2021-11-17 | 2021-11-17 | Can adjust level entrance to a cave protector that turnover was used in a flexible way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111359515.7A CN114059787B (en) | 2021-11-17 | 2021-11-17 | Can adjust level entrance to a cave protector that turnover was used in a flexible way |
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| Publication Number | Publication Date |
|---|---|
| CN114059787A true CN114059787A (en) | 2022-02-18 |
| CN114059787B CN114059787B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111359515.7A Active CN114059787B (en) | 2021-11-17 | 2021-11-17 | Can adjust level entrance to a cave protector that turnover was used in a flexible way |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108091A (en) * | 2023-10-25 | 2023-11-24 | 山东金润建设咨询有限公司 | Building floor opening protection device and application method thereof |
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| US20030132427A1 (en) * | 2001-09-05 | 2003-07-17 | Dwight Allenbaugh | Construction perimeter guard |
| CN211666315U (en) * | 2019-12-16 | 2020-10-13 | 中国二冶集团有限公司 | Fixture of floor entrance to a cave apron and protector in floor entrance to a cave |
| CN212406203U (en) * | 2020-05-21 | 2021-01-26 | 中建八局科技建设有限公司 | Horizontal entrance to a cave safety device |
| CN213449577U (en) * | 2020-08-04 | 2021-06-15 | 中国二冶集团有限公司 | Entrance to a cave protective structure is reserved to floor |
| CN214170000U (en) * | 2020-12-04 | 2021-09-10 | 中建八局第一建设有限公司 | Plane entrance to a cave protector |
| CN214659013U (en) * | 2021-03-10 | 2021-11-09 | 北京润亚环宇建筑工程有限公司 | Floor hole plugging device |
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2021
- 2021-11-17 CN CN202111359515.7A patent/CN114059787B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030132427A1 (en) * | 2001-09-05 | 2003-07-17 | Dwight Allenbaugh | Construction perimeter guard |
| CN211666315U (en) * | 2019-12-16 | 2020-10-13 | 中国二冶集团有限公司 | Fixture of floor entrance to a cave apron and protector in floor entrance to a cave |
| CN212406203U (en) * | 2020-05-21 | 2021-01-26 | 中建八局科技建设有限公司 | Horizontal entrance to a cave safety device |
| CN213449577U (en) * | 2020-08-04 | 2021-06-15 | 中国二冶集团有限公司 | Entrance to a cave protective structure is reserved to floor |
| CN214170000U (en) * | 2020-12-04 | 2021-09-10 | 中建八局第一建设有限公司 | Plane entrance to a cave protector |
| CN214659013U (en) * | 2021-03-10 | 2021-11-09 | 北京润亚环宇建筑工程有限公司 | Floor hole plugging device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117108091A (en) * | 2023-10-25 | 2023-11-24 | 山东金润建设咨询有限公司 | Building floor opening protection device and application method thereof |
| CN117108091B (en) * | 2023-10-25 | 2024-01-16 | 山东金润建设咨询有限公司 | Building floor opening protection device and application method thereof |
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| CN114059787B (en) | 2023-03-21 |
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