CN219839958U - Precast box girder end sealing anchor and waterproof operation awning device - Google Patents
Precast box girder end sealing anchor and waterproof operation awning device Download PDFInfo
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- CN219839958U CN219839958U CN202320829632.3U CN202320829632U CN219839958U CN 219839958 U CN219839958 U CN 219839958U CN 202320829632 U CN202320829632 U CN 202320829632U CN 219839958 U CN219839958 U CN 219839958U
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- platform
- box girder
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- 238000007789 sealing Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 240000005002 Erythronium dens canis Species 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000004062 sedimentation Methods 0.000 claims description 17
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 239000006260 foam Substances 0.000 claims description 11
- 238000004078 waterproofing Methods 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 210000003464 cuspid Anatomy 0.000 claims description 7
- 241000282326 Felis catus Species 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 238000001035 drying Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000001680 brushing effect Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
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- Tents Or Canopies (AREA)
Abstract
A precast box girder end sealing anchor and a waterproof operation awning device. The movable truss comprises a movable truss platform, a closed rain, a movable canopy, a settlement water stop table, a wane jacking row, a suspension lifter, a dog-tooth roller, a fixed movable supporting leg, a folding movable supporting leg, a leveling top support, a movable top support and a cable rope locking ring; the precast box girder end sealing anchor and waterproof operation waterproof shed device provided by the utility model has the following advantages: 1) The rain-proof and water-stopping device has the characteristics of rain-proof and water-stopping, and is not influenced by rain and weather; 2) The space has a certain sealing property, can effectively shield wind and rain, and can greatly reduce the drying cost when the relative humidity of the operation environment is high; 3) The device has a reasonable structure, is provided with the folding lifting support legs, can increase structural stability when unfolded, does not influence the walking of the beam moving machine when folded, and can perform cross operation; 4) The whole movement is convenient and the operation is simple; 5) The construction progress can be effectively improved.
Description
Technical Field
The utility model belongs to the technical field of bridge construction tools, and particularly relates to a precast box girder end sealing anchor and waterproof operation awning device.
Background
In the prefabrication process of the railway box girder, after the post-tensioning method prestress construction is finished, the girder end is subjected to anchor sealing and waterproof sealing treatment. The sealing anchors are filled by adopting dry and hard compensation shrinkage concrete, and the surfaces of the sealing anchors are covered with mortar with the same proportion; whereas waterproofing operations are typically manually painted with polyurethane waterproofing paint, thereby forming a waterproof layer. Generally, before the waterproof layer is constructed, the operation basal plane is required to be dried in percentage, the relative humidity of the operation environment is not more than 85 percent, and the working procedures from steel bar binding, concrete pouring, prestress tensioning and duct grouting can be performed reversely by adopting technical measures such as a waterproof shed, so that the working procedures are normally performed. In the south, the rainwater is more year by year, and in the season in which the rainwater is concentrated in the north, the rainfall is often characterized by urgency, short and big. Therefore, the box girder erection progress is severely restricted by the anchor sealing and waterproof procedures. The traditional construction method generally has the following defects: 1. the construction in rainy days is difficult to stop rainwater on the top surface of the box girder in order, and has great influence on the anchor sealing cover surface and the waterproof layer brushing operation; 2. construction after rain, in order to prevent surface bleeding, open fire is not needed during drying, so that the speed is low and the cost is high; 3. the time period that the relative humidity of the environment in certain areas in the south exceeds 85 percent is relatively high in the day, so that the influence on the waterproof layer brushing operation is large.
Disclosure of Invention
In order to solve the problems, the utility model aims to provide a precast box girder end sealing anchor and waterproof operation awning device.
In order to achieve the aim, the precast box girder end sealing anchor and waterproof operation awning device provided by the utility model comprises a movable truss platform, a closed awning, a movable awning, a settlement water stopping table, a wane top pressing row, a hanging lifter, a dog-tooth roller, a fixed movable supporting leg, a folding movable supporting leg, a leveling top support, a movable top support, a cable rope locking ring and a cable rope; the movable truss platform is a cuboid structure formed by a chassis, a middle working platform, a ceiling and two side frames; the front end of the roof, which faces the beam surface, protrudes outwards to form an overhang, and the front end of the roof is upwards provided with a bulge; the closed canopy is arranged on the top and the outer surfaces of two sides of the movable truss platform; the sedimentation water stop platform is of a hanging structure and is independent relative to the movable truss platform, and is composed of a main body, an arched bamboo board and water stop foam adhesive tapes; the main body is made of square tubes, is arranged along the width direction of the movable truss platform, is fixedly bolted with a steel wire rope locking ring at the top and is used for connecting a steel wire rope, and is fixedly provided with an arched bamboo board at the bottom; adhering a water-stopping foam adhesive tape to the bottom surface of the arched bamboo board; the section of the movable canopy is triangular, is fixed at the upper end of the sedimentation water stop table, and is opposite to the top drainage direction of the closed canopy; the rocker top pressing joint row consists of a row of rockers fixed on one cross beam at intervals at the front end of the movable truss platform ceiling and a row of rotary lock bolts fixed on the other cross beam parallel to the cross beam on the movable truss platform ceiling, the upper ends of the rotary lock bolts are hinged at the rear ends of the corresponding rockers, and the front ends of the rockers are positioned above the sedimentation water stop table; the two canine tooth rollers are respectively arranged at the upper positions of the bottoms of the two sides of the movable truss platform; the suspension lifter consists of a suspension support, a fixed pulley and a steel wire rope; the rear ends of the two suspension supports are respectively arranged on the bulges at the two sides of the ceiling on the movable truss platform; the two fixed pulleys are respectively arranged at two ends of a suspension support; the middle part of each steel wire rope is wound on two fixed pulleys positioned on the same suspension support, the hook at the front end suspends the steel wire rope on the main body, and the lower end of the steel wire rope is fixed on a corresponding canine tooth roller; the fixed movable supporting legs are of right triangle structures, the two fixed movable supporting legs are respectively fixed at the positions, close to the cross section of the beam end, of the two sides of the chassis of the movable truss platform, and universal wheels are arranged on the outer side of the bottom; the folding movable supporting legs and the fixed movable supporting legs have the same structure, the two folding movable supporting legs are respectively arranged at the positions, far away from the cross section of the beam end, of the two sides of the chassis of the movable truss platform, and universal wheels are arranged at the outer sides of the bottoms of the two folding movable supporting legs; the two leveling top supports are respectively arranged at two side parts of the bottom of the chassis of the movable truss platform, and are used for fixing and leveling the movable truss platform when the folding movable supporting legs are folded and retracted; the movable top support consists of a top supporting plate, a top lead screw and an extension bar, the lower end of the movable top support is placed in the middle of a chassis of the movable truss platform, and the upper end of the movable top support is propped against the middle of the bottom surface of the working platform of the movable truss platform and is used for supporting the working platform; the two cable rope locking rings are respectively fixed at the upper positions of the middle parts of the two sides of the movable truss platform and used for hanging the cable ropes, and the movable truss platform is fixedly connected with the beam body.
The precast box girder end sealing anchor and waterproof operation rain-proof shed device further comprises a movable cat ladder capable of being hung on the edge of the operation platform on the movable truss platform.
The folding movable supporting legs are connected with the movable truss platform through hinges and locked through rotary lock bolts.
The movable truss platform is made of I-steel, channel steel and square tubes.
The size of the square pipe on the sedimentation water stop table is 60mm, and the thickness of the water stop foam adhesive tape is 50mm.
The wanes on the wane top pressure allies oneself with the row adopt the I-steel to make.
The canine tooth roller adopts a ratchet rope tightener.
The universal wheels on the fixed movable supporting leg and the folding movable supporting leg adopt rubber universal wheels with a braking function.
The precast box girder end sealing anchor and waterproof operation waterproof shed device provided by the utility model has the following advantages: 1) The rain-proof and water-stopping device has the characteristics of rain-proof and water-stopping, and is not influenced by rain and weather; 2) The space has a certain sealing property, can effectively shield wind and rain, and can greatly reduce the drying cost when the relative humidity of the operation environment is high; 3) The device has a reasonable structure, is provided with the folding lifting support legs, can increase structural stability when unfolded, does not influence the walking of the beam moving machine when folded, and can perform cross operation; 4) The whole movement is convenient and the operation is simple; 5) The construction progress can be effectively improved.
Drawings
FIG. 1 is a front view of a precast box girder end sealing anchor and waterproofing operation awning device provided by the utility model;
FIG. 2 is a left side view of the precast box girder end sealing anchor and waterproof operation awning device provided by the utility model;
FIG. 3 is an enlarged view of the portion A of FIG. 2;
FIG. 4 is a block diagram of a sedimentation water stop table in the precast box girder end sealing anchor and waterproof operation waterproof shed device provided by the utility model.
Fig. 5 and 6 are side view and front view of a movable ladder stand in the precast box girder end sealing anchor and waterproof operation awning device provided by the utility model.
Fig. 7 is a front view of the prefabricated box girder end sealing anchor and the waterproof operation waterproof shed device in the use state.
Fig. 8 is a side view of the prefabricated box girder end sealing anchor and waterproof operation awning device in a use state.
Detailed Description
The prefabricated box girder end sealing anchor and the waterproof operation waterproof shed device provided by the utility model are described in detail below with reference to the accompanying drawings and specific implementation.
As shown in fig. 1 to 8, the precast box girder end sealing anchor and waterproof operation awning device provided by the utility model comprises a movable truss platform 1, a closed awning 2, a movable awning 3, a settlement water stop table 4, a wane top pressing joint row 5, a suspension lifter 6, a dog-tooth roller 7, a fixed movable supporting leg 8, a folding movable supporting leg 9, a leveling supporting leg 11, a movable supporting leg 12, a cable locking ring 14 and a cable; the movable truss platform 1 is a cuboid structure formed by a chassis, a middle working platform, a ceiling and two side frames; the chassis can ensure stable structure and facilitate the anchor sealing and brushing operation of the bottom plate of the beam end; the operation platform not only can ensure structural rigidity, but also can conveniently set up movable pedals, and the vertical height is suitable for the adjustment of the storage height of the box girders, so that the operation platform is ensured to be slightly higher than the top surface of the bottom plate of the girder body above the top surface of the bottom plate so as to meet the construction requirements of all the box girders in a field; the front end of the roof, which faces the beam surface, protrudes outwards to form an overhang, and the front end of the roof is provided with a bulge upwards, so that the stability of the structure is ensured, and water stopping and rainproof facilities are convenient to install; the widths of the two sides of the cross section of the movable truss platform 1 parallel to the beam end meet the operation requirement of the highest position of the top surface of the web plate of the beam end, and the thickness of the movable truss platform perpendicular to the cross section direction of the beam end is controlled within 1m so as to facilitate the running of a beam carrying machine; the closed canopy 2 is arranged on the top and the outer surfaces of the two sides of the movable truss platform 1, so that when the device is fixed at the beam end, the cross section of the beam end prevents rainwater from contacting, and the influence of wind load on the device in the moving process is reduced to the greatest extent; the sedimentation water stop table 4 is of a hanging structure, is independent relative to the movable truss platform 1, and is composed of a main body 20, an arched bamboo board 15 and a water stop foam adhesive tape 16; the main body 20 is made of square tubes, is arranged along the width direction of the movable truss platform 1, is fixedly bolted with a steel wire rope locking ring at the top and is used for connecting a steel wire rope, and is fixedly provided with an arched bamboo board 15 at the bottom and is mainly used as a bearing carrier for top and bottom jacking force and counter thrust; the water-stopping foam adhesive tape 16 is adhered to the bottom surface of the arched bamboo board 15, so that the water-stopping foam adhesive tape 16 plays a role in rebound pressing, and the negative influence of the uneven top surface of the beam body on water stopping can be effectively eliminated; the section of the movable canopy 3 is triangular, is fixed at the upper end of the sedimentation water stop table 4, and is opposite to the top drainage direction of the closed canopy 2, so that the device can effectively ensure that rainwater is prevented from contacting the surface of the beam end in percentage; the rocker top pressing joint row 5 consists of a row of rockers 21 fixed on one cross beam at intervals at the front end of the ceiling of the movable truss platform 1 and a row of rotary lock bolts 10 fixed on the other cross beam parallel to the cross beam at intervals at the ceiling of the movable truss platform 1, the upper ends of the rotary lock bolts 10 are hinged at the rear ends of the corresponding rockers 21, the front ends of the rockers 21 are positioned above the sedimentation water stop table 4 and are used for pressing the sedimentation water stop table 4, and the vertical pressure of the sedimentation water stop table 4 on the top surface of the beam body is increased to play a better role in water stop; the two dog-tooth rollers 7 are respectively arranged at the upper positions of the bottoms of the two sides of the movable truss platform 1; the suspension lifter 6 consists of a suspension support 17, a fixed pulley 18 and a steel wire rope 19; the rear ends of the two suspension supports 17 are respectively arranged on the bulges at the two sides of the ceiling on the movable truss platform 1; two fixed pulleys 18 are respectively arranged at two ends of one suspension support 17; the middle part of each steel wire rope 19 is wound on two fixed pulleys 18 positioned on the same suspension support 17, the hook at the front end is used for suspending the steel wire ropes on the main body 20, and the lower end is fixed on a corresponding canine tooth roller 7 to participate in the lifting and fixing of the sedimentation water stop table 4; the fixed movable supporting legs 8 are of right triangle structures, the two fixed movable supporting legs 8 are respectively fixed at the positions, close to the cross section of the beam end, of the two sides of the chassis of the movable truss platform 1, universal wheels are arranged on the outer sides of the bottoms of the two fixed movable supporting legs, and the movable truss platform 1 can be conveniently moved and locked; the folding movable supporting legs 9 and the fixed movable supporting legs 8 have the same structure, the two folding movable supporting legs 9 are respectively arranged at the positions, far away from the cross section of the beam end, of the two sides of the chassis of the movable truss platform 1, and universal wheels are arranged at the outer sides of the bottoms; the two leveling top supports 11 are respectively arranged at two side parts of the bottom of the chassis of the movable truss platform 1, and are used for fixing and leveling the movable truss platform 1 when the folding movable supporting legs 9 are folded and retracted; the movable top support 12 consists of a top supporting plate, a counter-top lead screw and an extension bar, the lower end of the movable top support is placed in the middle of a chassis of the movable truss platform 1, and the upper end of the movable top support is propped against the middle of the bottom surface of the working platform of the movable truss platform 1 and is used for supporting the working platform; two cable rope locking rings 14 are respectively fixed at the upper positions of the middle parts of the two sides of the movable truss platform 1 and are used for hanging the cable ropes to fixedly connect the movable truss platform 1 with the beam body.
The precast box girder end sealing anchor and waterproof operation waterproof shed device further comprises a movable cat ladder 13 which can be hung on the edge of the operation platform on the movable truss platform 1 and used for up-and-down operation of constructors.
The folding movable supporting leg 9 is connected with the movable truss platform 1 through a hinge, and is locked through a rotary lock bolt.
The movable truss platform 1 is made of I-steel, channel steel and square tubes.
The size of the square pipe above the sedimentation water stop table 4 is 60mm, and the thickness of the water stop foam adhesive tape 16 is 50mm.
The rocker 21 on the rocker top pressing row 5 is made of I-steel.
The dog-tooth roller 7 adopts a ratchet rope tightener.
The universal wheels on the fixed movable supporting leg 8 and the folding movable supporting leg 9 are rubber universal wheels with a braking function.
The using method of the precast box girder end sealing anchor and waterproof operation awning device provided by the utility model is as follows: before rain comes or when the relative humidity of the environment exceeds 85%, a constructor or uses a forklift to pick up the device to the beam end of a designated beam body, the fixed movable supporting leg 8 on the device stretches into the lower part of the beam end until the device is abutted against the cross section of the beam end, then one end of a cable rope on two sides penetrates into the cable rope locking ring 14, the other end penetrates through a vent hole of a beam web of the beam end beam body from the outer surface of the beam body, a rope tightener is transversely placed at the end part of the vent hole by a steel pipe at the tail end, and the device is fixedly connected with the beam body by the rope tightener; then, the leveling jack support 11 is opened, the device is leveled and supported, at the moment, the folding movable supporting leg 9 on the device is unfolded to be parallel to the cross section of the beam end and is locked by the rotary lock bolt, and then the sedimentation water stop table 4 is lowered to the top surface of the beam body through the rotary dog-tooth roller 7; then, place movable top support 12 under the work platform middle part crossbeam on this device, rotatory its screw that is to the top, until withstands the work platform, take out movable cat ladder 13 immediately and hang in this middle part crossbeam, operating personnel is through climbing movable cat ladder 13 to work platform top, through rotatory lock plunger 10 on this device ceiling, with the whole roof pressure of wane roof pressure allies oneself with row 5 in subsidence stagnant water platform 4 top for subsidence stagnant water foam adhesive tape 16 and the roof beam body top surface contact compaction of stagnant water platform 4, and keep certain pressure, then the device is installed so far, just can begin to carry out the anchor or the waterproof operation of sealing of beam end cross-section at this moment.
Claims (8)
1. The utility model provides a prefabricated case roof beam end seals anchor and waterproof operation weather enclosure device which characterized in that: the device comprises a movable truss platform (1), a closed awning (2), a movable awning (3), a settlement water stopping table (4), a wane jacking row (5), a suspension lifter (6), a dog-tooth roller (7), a fixed movable supporting leg (8), a folding movable supporting leg (9), a leveling top support (11), a movable top support (12), a cable rope locking ring (14) and a cable rope; the movable truss platform (1) is a cuboid structure formed by a chassis, a middle working platform, a ceiling and two side frames; the front end of the roof, which faces the beam surface, protrudes outwards to form an overhang, and the front end of the roof is upwards provided with a bulge; the closed canopy (2) is arranged on the top and the outer surfaces of the two sides of the movable truss platform (1); the sedimentation water stop table (4) is of a suspension structure, is independent relative to the movable truss platform (1), and consists of a main body (20), an arched bamboo board (15) and a water stop foam adhesive tape (16); the main body (20) is made of square tubes, is arranged along the width direction of the movable truss platform (1), is fixedly bolted with a steel wire rope locking ring at the top and is used for connecting a steel wire rope, and is fixedly provided with an arched bamboo board (15) at the bottom; the bottom surface of the arched bamboo board (15) is adhered with a water-stopping foam adhesive tape (16); the section of the movable canopy (3) is triangular, is fixed at the upper end of the sedimentation water stop table (4), and is opposite to the top drainage direction of the closed canopy (2); the rocker top pressing joint row (5) consists of a row of rockers (21) fixed on one beam at intervals at the front end of the ceiling of the movable truss platform (1) and a row of rotary lock bolts (10) fixed on the other beam parallel to the beam on the ceiling of the movable truss platform (1), the upper ends of the rotary lock bolts (10) are hinged at the rear ends of the corresponding rockers (21), and the front ends of the rockers (21) are positioned above the sedimentation water stop table (4); the two canine tooth rollers (7) are respectively arranged at the upper positions of the bottoms of the two sides of the movable truss platform (1); the suspension lifter (6) consists of a suspension support (17), a fixed pulley (18) and a steel wire rope (19); the rear ends of the two suspension supports (17) are respectively arranged on the bulges at the two sides of the ceiling on the movable truss platform (1); two fixed pulleys (18) are respectively arranged at two ends of a suspension support (17); the middle part of each steel wire rope (19) is wound on two fixed pulleys (18) positioned on the same suspension support (17), a hook at the front end is used for suspending the steel wire rope on the main body (20), and the lower end is fixed on a corresponding canine tooth roller (7); the fixed movable supporting legs (8) are of right triangle structures, the two fixed movable supporting legs (8) are respectively fixed at the positions, close to the cross section of the beam end, of the two sides of the chassis of the movable truss platform (1), and universal wheels are arranged at the outer sides of the bottoms of the fixed movable supporting legs; the folding movable supporting legs (9) and the fixed movable supporting legs (8) have the same structure, the two folding movable supporting legs (9) are respectively arranged at the positions, far away from the cross section of the beam end, of the two sides of the chassis of the movable truss platform (1), and universal wheels are arranged at the outer sides of the bottoms; the two leveling top supports (11) are respectively arranged at two side parts of the bottom of the chassis of the movable truss platform (1), and are used for fixing and leveling the movable truss platform (1) when the folding movable supporting legs (9) are folded and retracted; the movable top support (12) consists of a top supporting plate, a counter-top lead screw and an extension rod, the lower end of the movable top support is placed in the middle of a chassis of the movable truss platform (1), and the upper end of the movable top support is propped against the middle of the bottom surface of the working platform of the movable truss platform (1) and is used for supporting the working platform; two cable rope locking rings (14) are respectively fixed at the upper positions of the middle parts of the two sides of the movable truss platform (1) and are used for connecting the cable ropes to fixedly connect the movable truss platform (1) with the beam body.
2. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the precast box girder end sealing anchor and waterproof operation waterproof shed device further comprises a movable cat ladder (13) which can be hung on the edge of the operation platform on the movable truss platform (1).
3. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the folding movable supporting legs (9) are connected with the movable truss platform (1) through hinges, and are locked through rotary lock bolts.
4. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the movable truss platform (1) is made of I-steel, channel steel and square tubes.
5. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the size of the square pipe above the sedimentation water stop table (4) is 60mm, and the thickness of the water stop foam adhesive tape (16) is 50mm.
6. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the wanes (21) on the wane jacking row (5) are made of I-steel.
7. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the canine tooth roller (7) adopts a ratchet rope tightener.
8. The precast box girder end sealing anchor and waterproofing operation weather enclosure device of claim 1, wherein: the universal wheels on the fixed movable supporting leg (8) and the folding movable supporting leg (9) adopt rubber universal wheels with a braking function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320829632.3U CN219839958U (en) | 2023-04-14 | 2023-04-14 | Precast box girder end sealing anchor and waterproof operation awning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320829632.3U CN219839958U (en) | 2023-04-14 | 2023-04-14 | Precast box girder end sealing anchor and waterproof operation awning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219839958U true CN219839958U (en) | 2023-10-17 |
Family
ID=88297822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320829632.3U Active CN219839958U (en) | 2023-04-14 | 2023-04-14 | Precast box girder end sealing anchor and waterproof operation awning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219839958U (en) |
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2023
- 2023-04-14 CN CN202320829632.3U patent/CN219839958U/en active Active
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