CN114232496A - Waterproof fastening device is used in public road bridge roof beam construction that portable warning effect is good - Google Patents
Waterproof fastening device is used in public road bridge roof beam construction that portable warning effect is good Download PDFInfo
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- CN114232496A CN114232496A CN202111659609.6A CN202111659609A CN114232496A CN 114232496 A CN114232496 A CN 114232496A CN 202111659609 A CN202111659609 A CN 202111659609A CN 114232496 A CN114232496 A CN 114232496A
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- waterproof
- fastening device
- warning effect
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- 230000000694 effects Effects 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 26
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 8
- 239000004744 fabric Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a waterproof fastening device with good movable warning effect for highway bridge construction, and belongs to the technical field of highway bridge construction assistance. A waterproof fastening device with good movable warning effect for highway bridge construction comprises two waterproof plates, wherein the two waterproof plates are arranged in a relatively rotating manner, and supporting plates are hinged to the bottoms of the waterproof plates; the outer side of the waterproof plate is provided with a diversion trench, the corresponding support plates are provided with water guide trenches, one end of each water guide trench is communicated with the diversion trench, and the other end of each water guide trench penetrates through the support plates and is arranged towards the outer side of the support plate; the waterproof fastening device further comprises an adjusting component for adjusting the included angle of the two waterproof boards. Through setting up the reinforcement assembly, utilize two-way lead screw can be so that to contact with the template to the template, can play the reinforcing effect to the template under the effect of vaulting pole, improve the practicality of device.
Description
Technical Field
The invention relates to the technical field of assistance for highway bridge construction, in particular to a waterproof fastening device with good movable warning effect for highway bridge construction.
Background
When constructing a highway bridge, concrete needs to be poured, but due to variable weather, when raining occurs after concrete pouring, rain-proof measures need to be taken for the unsolidified concrete, the prior art CN112813830A discloses a waterproof fastening device for highway bridge construction with good movable warning effect, a rain-proof cloth is obliquely placed, so that rain water can not accumulate on the upper surface of the rain-proof cloth when rain is sheltered, the burden of two supporting legs can not be increased, the service life of the rain-proof cloth is prolonged, meanwhile, the rain water enters a water storage tank through a flow guide pipe, thereby realizing the collection of the rain water, saving water, when rain is not sheltered, water in the water storage tank is discharged through a water outlet valve, the transportation is convenient, the occupied area of the whole device is reduced by rotating a first straight rod of the supporting leg, a warning lamp is arranged on the water storage tank, and a warning effect can be provided, avoid meeting accident, the pillar has the locking universal wheel to make the device conveniently remove the transport, and the practicality is higher. But the device still has the shortcoming that because the device simple structure, the function is comparatively single, the device is fixed the device through injecting water in the water storage box, because the road surface is level and smooth inadequately when the highway is pruned, results in the device fixed effect relatively poor, the problem of empting appears easily, the device is not convenient for when using simultaneously consolidate the template that uses when pouring the concrete, leads to the device practicality relatively poor, in view of this, we provide a waterproof fastener for the construction of highway bridge that portable warning effect is good.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a waterproof fastening device with good movable warning effect for highway bridge construction, and aims to solve the problems in the background technology.
2. Technical scheme
A waterproof fastening device with good movable warning effect for highway bridge construction comprises two waterproof plates, wherein the two waterproof plates are arranged in a relatively rotating mode, and supporting plates are hinged to the bottoms of the waterproof plates; a diversion trench is formed in the outer side of the waterproof plate, water guide trenches are formed in the corresponding supporting plates, one end of each water guide trench is communicated with the diversion trench, and the other end of each water guide trench penetrates through the supporting plates and is arranged towards the outer side of the supporting plate; the waterproof fastening device further comprises an adjusting component for adjusting the included angle of the two waterproof boards.
As an alternative scheme of the technical scheme of the invention, the bottom of the diversion trench is connected with a hose in a penetrating way, and the other end of the hose is communicated with the diversion trench.
As an alternative scheme of the technical scheme of the invention, universal wheels are installed at the bottom of the supporting plate; the inner ends of the two waterproof plates are hinged through a fixed seat, and a warning lamp is fixedly installed at the top of the fixed seat; the adjusting component comprises a threaded rod, the outer wall of the upper end of the threaded rod is rotatably connected with the bottom surface of the end part of the fixing seat, a moving rod is in threaded connection with the outer wall of the threaded rod, pull rods are hinged to the side walls of the two ends of the moving rod, and the upper end of each pull rod is hinged to the side wall of the waterproof plate through a pin shaft.
As an alternative of the technical scheme of the invention, at least one of the supporting plates is fixedly connected with a placing rack on the outer end face, at least one group of fixing components is arranged on the placing rack, and each fixing component comprises a positioning rod penetrating through the supporting rack; the top of locating lever with the backup pad lateral wall is articulated to be provided with a laborsaving pole, the laborsaving pole can contradict the locating lever is in order to press down the locating lever.
As an alternative of the technical scheme of the invention, a plurality of inserting rod grooves are formed in the end surface of the inner side of the positioning rod, inserting rods are slidably matched with the inner walls of the inserting rod grooves, inclined planes are formed at the bottoms of the inner ends of the inserting rods, and guide heads are fixedly connected to the inner walls of the outer ends of the inserting rods; the positioning rod is arranged in the guide head, the positioning rod is arranged in the positioning groove, the positioning rod is in sliding fit with the positioning rod, the positioning rod is arranged in the positioning groove, the positioning rod is in sliding fit with the positioning rod, the end surface of the outer side of the positioning rod corresponds to the guide head, and is provided with a plurality of adjusting grooves, the adjusting grooves are arranged in an inclined structure, and the inner walls of the adjusting grooves are in sliding fit with the outer wall of the guide head; the adjusting plate top surface is connected with the regulation pole in the rotation, it sets up to adjust the pole to be T type structure, adjust pole upper end outer wall and pass the adjustment tank inner wall and extend to upper portion, adjust the pole with locating lever threaded connection.
As an alternative scheme of the technical scheme of the invention, the top of the inner end of the labor-saving rod is fixedly connected with a tension spring, and the other end of the tension spring is fixedly connected with the supporting plate; the middle part of the labor-saving rod is provided with a sliding groove, and the adjusting rod penetrates through the sliding groove, so that the inner wall of the sliding groove is in sliding fit with the outer wall of the adjusting rod.
As an alternative of the technical scheme of the invention, the end surface of the inner side of the supporting plate is provided with a containing groove, and a reinforcing component is arranged in the containing groove; the reinforcing assembly comprises a bidirectional screw rod, the outer wall of one end of the bidirectional screw rod is rotatably connected with the inner wall of the accommodating groove, the other end of the bidirectional screw rod penetrates through the inner wall of the accommodating groove and extends to the outer wall, and the outer wall of the bidirectional screw rod is in a symmetrical structure and is in threaded connection with two moving blocks; the reinforced assembly further comprises a reinforcing plate, a supporting plate is arranged on the inner side of the reinforcing plate, a plurality of guide rods are fixedly connected to the outer wall of the supporting plate, the outer wall of each guide rod is in sliding fit with the reinforcing plate, a plurality of springs are fixedly connected to the outer wall of the supporting plate, the outer end of each spring is fixedly connected to the outer wall of the reinforcing plate, two support rods are hinged to the end face of the outer side of the reinforcing plate through hinged supports, and the outer ends of the support rods are hinged to the inner end of the movable block.
As an alternative of the technical scheme of the invention, the end surface of the inner side of the supporting plate is provided with a ventilation assembly; the ventilation assembly comprises an impeller, the inner end of the impeller penetrates through the inner wall of the water guide groove to extend to the outside and is connected and fixed with a fan blade, the fan blade is arranged in an inclined structure, a protective cover is covered outside the fan blade, and the outer end of the protective cover is connected and fixed with the end face of the inner side of the supporting plate.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
1. through setting up the reinforcement assembly, utilize two-way lead screw can be so that to contact with the template to the template, can play the reinforcing effect to the template under the effect of vaulting pole, improve the practicality of device.
2. Through setting up fixed subassembly, when the device was used, utilize laborsaving pole can insert the locating lever underground, then can make the inserted bar shift out in can following the locating lever through the regulating plate to can improve the land fertility of grabbing of locating lever, thereby can remain stable when making the unevenness of device subaerial, improve the fixed effect of device.
3. Through setting up two waterproof boards, can play the stable connection of device for it is more convenient at the removal in-process, simultaneously through setting up the ventilation subassembly, can make the device when using, utilize the power that the rainwater brought, make the fan blade can rotate, thereby accelerate inside ventilation, thereby improve the setting speed of concrete, improve the practicality of device.
Drawings
FIG. 1 is a front side schematic view of the overall structure of the present invention;
FIG. 2 is a front side schematic view of a portion of the structure of the present invention;
FIG. 3 is a front cross-sectional view of a portion of the structure of the present invention;
FIG. 4 is a front side schematic view of a reinforcement assembly structure of the present invention;
FIG. 5 is a front right side schematic view of a partial structure of the present invention;
FIG. 6 is a partially sectioned expanded view of the anterior side of the fixation assembly structure of the present invention;
the reference numbers in the figures illustrate: 1. a waterproof sheet; 2. a ventilation assembly; 3. a support plate; 4. an adjustment assembly; 5. a receiving groove; 6. a reinforcement assembly; 7. placing a rack; 8. a labor-saving rod; 9. a fixing assembly; 301. a water chute; 101. a diversion trench; 102. a fixed seat; 103. a hose; 401. a threaded rod; 402. a travel bar; 403. a pull rod; 601. a bidirectional screw rod; 602. a moving block; 603. a reinforcing plate; 604. a resisting plate; 605. a guide bar; 606. a spring; 607. a stay bar; 901. positioning a rod; 902. a plug-in rod slot; 903. inserting a rod; 904. a guide head; 905. a placement groove; 906. an adjusting plate; 907. an adjustment groove; 908. adjusting a rod; 801. a tension spring; 201. an impeller; 202. a fan blade; 203. a shield.
Detailed Description
Referring to fig. 1-6, the present invention provides a technical solution:
the utility model provides a waterproof fastener is used in construction of portable warning effect's public road bridge roof beam, as shown in fig. 1, including two waterproof boards 1, 1 bottom of waterproof board articulates there is backup pad 3, 1 tip of waterproof board is equipped with adjusting part 4, 3 medial surface of backup pad has been seted up and has been accomodate groove 5, it is equipped with reinforcing component 6 to accomodate the inslot 5, 3 outside end face connections of backup pad are fixed with rack 7, symmetrical structure is equipped with two laborsaving poles 8 around rack 7 top is, laborsaving pole 8 downside is equipped with fixed subassembly 9, 3 medial surface of backup pad are equipped with ventilation assembly 2.
Specifically, as shown in fig. 3, a water chute 301 is formed inside the outer side of the supporting plate 3, and two universal wheels are mounted and fixed on the bottom of the supporting plate 3 in a front-back symmetrical structure.
In the present embodiment, the water guide groove 301 functions to guide the water flow.
Further, two 1 inner of waterproof board are articulated through fixing base 102, and the installation of fixing base 102 top is fixed with the warning light, and guiding gutter 101 has been seted up at 1 top of waterproof board, and 1 outer end bottom through connection of waterproof board is fixed with hose 103, hose 103 bottom and the inboard wall intercommunication of guiding gutter 301 upside.
In this embodiment, the guide groove 101 functions to collect water and increase the amount of water.
Still further, as shown in fig. 2, the adjusting assembly 4 includes a threaded rod 401, an outer wall of an upper end of the threaded rod 401 is rotatably connected to a bottom surface of an end portion of the fixing seat 102, a moving rod 402 is connected to an outer wall of the threaded rod 401 through threads, side walls of two ends of the moving rod 402 are hinged to pull rods 403, and an upper end of each pull rod 403 is hinged to a side wall of the waterproof board 1 through a pin.
In this embodiment, the threaded rod 401 functions to adjust the waterproof board 1, so that the device is suitable for use on road surfaces with different widths.
Furthermore, as shown in fig. 3 and 4, the reinforcing component 6 includes a bidirectional screw 601, an outer wall of one end of the bidirectional screw 601 is rotatably connected with an inner wall of the accommodating groove 5, the other end of the bidirectional screw 601 passes through the inner wall of the accommodating groove 5 and extends to the outer wall, and two moving blocks 602 are connected to the outer wall of the bidirectional screw 601 in a symmetrical structure through threads.
In this embodiment, the bidirectional screw 601 functions to adjust the reinforcing plate 603.
Furthermore, the reinforcing assembly 6 further comprises a reinforcing plate 603, a supporting plate 604 is arranged on the inner side of the reinforcing plate 603, a plurality of guide rods 605 are fixedly connected to the outer wall of the supporting plate 604, the outer wall of the guide rod 605 is in sliding fit with the reinforcing plate 603, a plurality of springs 606 are fixedly connected to the outer wall of the supporting plate 604, the outer ends of the springs 606 are fixedly connected to the outer wall of the reinforcing plate 603, two supporting rods 607 are hinged to the end face of the outer side of the reinforcing plate 603 through hinged supports, and the outer ends of the supporting rods 607 are hinged to the inner end of the moving block 602.
In this embodiment, the spring 606 plays a role of buffering the abutting plate 604.
Furthermore, as shown in fig. 6, the fixing assembly 9 includes a positioning rod 901, an outer wall of the positioning rod 901 is slidably engaged with a top of the rack 7, a plurality of inserting rod slots 902 are formed in the end surface of the inner side of the positioning rod 901, an inserting rod 903 is slidably engaged with an inner wall of the inserting rod slot 902, an inclined surface is formed at the bottom of the inner end of the inserting rod 903, and a guide 904 is fixedly connected to an inner wall of the outer end of the inserting rod 903.
In this embodiment, the insertion rod 903 with an inclined surface at the bottom is convenient to be inserted into the soil.
It is worth to say that, fixed subassembly 9 still includes the standing groove 905 of seting up in the inner wall of locating lever 901, sliding fit has regulating plate 906 in standing groove 905, a plurality of regulating grooves 907 have been seted up to regulating plate 906 outside terminal surface personally submitting linear structure, regulating groove 907 is the setting of slope structure, regulating groove 907 inner wall and guide 904 outer wall sliding fit, regulating plate 906 top surface rotates and is connected with regulation pole 908, regulation pole 908 is the setting of T type structure, the outer wall of adjusting the pole 908 upper end passes the inner wall of regulating groove 907 and extends to upper portion, adjust pole 908 and locating lever 901 threaded connection.
In the present embodiment, the inclined structure-provided adjustment groove 907 functions to adjust the plunger 903.
It should be noted that, as shown in fig. 1 and 5, the inner end of the labor-saving rod 8 is hinged to the outer wall of the support plate 3, the top of the inner end of the labor-saving rod 8 is fixedly connected with a tension spring 801, the inner end of the tension spring 801 is fixedly connected with the outer wall of the support plate 3, and the inner wall of the middle part of the labor-saving rod 8 is in sliding fit with the outer wall of the adjusting rod 908.
In the present embodiment, the insertion rod 903 serves to store the laborsaving lever 8.
Besides, the ventilation assembly 2 comprises an impeller 201, the inner end of the impeller 201 penetrates through the inner wall of the water chute 301 to extend to the outside and is fixedly connected with a fan blade 202, the fan blade 202 is arranged in an inclined structure, a protective cover 203 is covered outside the fan blade 202, and the outer end of the protective cover 203 is fixedly connected with the end face of the inner side of the supporting plate 3.
In this embodiment, the protective cover 203 protects the fan blade 202.
When a road is built for pouring concrete and the concrete is not dry, rainy weather appears, the device can be installed above the concrete, firstly, the opening angle of the waterproof board 1 is adjusted according to the width of the road surface, the threaded rod 401 is rotated to drive the moving rod 402 in threaded connection to move, the moving rod 402 drives the hinged pull rod 403, the pull rod 403 can adjust the angle of the waterproof board 1, the support plates 3 on the two sides can be positioned on the two sides of the road surface, then the labor-saving rod 8 can be pressed downwards, the positioning rod 901 can be pressed downwards by utilizing the lever principle, the positioning rod 901 can be inserted into soil, then the adjusting rod 908 is rotated to drive the adjusting plate 906 in rotational connection to move downwards, and the inserting rod 903 connected with the guide head 904 can be driven to move out of the inserting rod 902 due to the inclined adjusting groove 907 formed in the adjusting plate 906, so that the insertion rod 903 can be transversely inserted into the soil, the positioning rod 901 can have strong ground holding force, the device can be fixed,
then through rotating two-way lead screw 601, can make two-way lead screw 601 drive threaded connection's movable block 602 remove, make movable block 602 can drive articulated vaulting pole 607 and outwards prop, make articulated gusset plate 603 drive and support board 604 and template contact, thereby consolidate the support to the template and handle, then water that connects as waterproof board 1 can enter into guiding gutter 301 through hose 103, then can drive impeller 201 and rotate, make impeller 201 drive the fan blade 202 of connecting and rotate, make fan blade 202 can blow the concrete that does not solidify, thereby accelerate the solidification of concrete.
Claims (8)
1. The utility model provides a waterproof fastener is used in public road bridge roof beam construction that portable warning effect is good, includes two waterproof boards, its characterized in that: the two waterproof plates are arranged in a relatively rotating mode, and supporting plates are hinged to the bottoms of the waterproof plates;
a diversion trench is formed in the outer side of the waterproof plate, water guide trenches are formed in the corresponding supporting plates, one end of each water guide trench is communicated with the diversion trench, and the other end of each water guide trench penetrates through the supporting plates and is arranged towards the outer side of the supporting plate;
the waterproof fastening device further comprises an adjusting component for adjusting the included angle of the two waterproof boards.
2. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 1, characterized in that: the bottom of the diversion trench is connected with a hose in a penetrating way, and the other end of the hose is communicated with the diversion trench.
3. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 1, characterized in that: universal wheels are mounted at the bottom of the supporting plate;
the inner ends of the two waterproof plates are hinged through a fixed seat, and a warning lamp is fixedly installed at the top of the fixed seat;
the adjusting component comprises a threaded rod, the outer wall of the upper end of the threaded rod is rotatably connected with the bottom surface of the end part of the fixing seat, a moving rod is in threaded connection with the outer wall of the threaded rod, pull rods are hinged to the side walls of the two ends of the moving rod, and the upper end of each pull rod is hinged to the side wall of the waterproof plate through a pin shaft.
4. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 1, characterized in that: at least one of the supporting plates is fixedly connected with a placing rack on the outer side end face,
at least one group of fixing assemblies are arranged on the placing frame, and each fixing assembly comprises a positioning rod penetrating through the supporting frame;
the top of locating lever with the backup pad lateral wall is articulated to be provided with a laborsaving pole, the laborsaving pole can contradict the locating lever is in order to press down the locating lever.
5. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 4, characterized in that: a plurality of inserting rod grooves are formed in the end faces of the inner sides of the positioning rods, inserting rods are slidably matched with the inner walls of the inserting rod grooves, inclined planes are formed in the bottoms of the inner ends of the inserting rods, and guide heads are fixedly connected to the inner walls of the outer ends of the inserting rods;
the positioning rod is arranged in the guide head, the positioning rod is arranged in the positioning groove, the positioning rod is in sliding fit with the positioning rod, the positioning rod is arranged in the positioning groove, the positioning rod is in sliding fit with the positioning rod, the end surface of the outer side of the positioning rod corresponds to the guide head, and is provided with a plurality of adjusting grooves, the adjusting grooves are arranged in an inclined structure, and the inner walls of the adjusting grooves are in sliding fit with the outer wall of the guide head;
the adjusting plate top surface is connected with the regulation pole in the rotation, it sets up to adjust the pole to be T type structure, adjust pole upper end outer wall and pass the adjustment tank inner wall and extend to upper portion, adjust the pole with locating lever threaded connection.
6. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 5, characterized in that: a tension spring is fixedly connected to the top of the inner end of the labor-saving rod, and the other end of the tension spring is fixedly connected with the supporting plate;
the middle part of the labor-saving rod is provided with a sliding groove, and the adjusting rod penetrates through the sliding groove, so that the inner wall of the sliding groove is in sliding fit with the outer wall of the adjusting rod.
7. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 1, characterized in that: the end surface of the inner side of the supporting plate is provided with a containing groove, and a reinforcing assembly is arranged in the containing groove;
the reinforcing assembly comprises a bidirectional screw rod, the outer wall of one end of the bidirectional screw rod is rotatably connected with the inner wall of the accommodating groove, the other end of the bidirectional screw rod penetrates through the inner wall of the accommodating groove and extends to the outer wall, and the outer wall of the bidirectional screw rod is in a symmetrical structure and is in threaded connection with two moving blocks;
the reinforced assembly further comprises a reinforcing plate, a supporting plate is arranged on the inner side of the reinforcing plate, a plurality of guide rods are fixedly connected to the outer wall of the supporting plate, the outer wall of each guide rod is in sliding fit with the reinforcing plate, a plurality of springs are fixedly connected to the outer wall of the supporting plate, the outer end of each spring is fixedly connected to the outer wall of the reinforcing plate, two support rods are hinged to the end face of the outer side of the reinforcing plate through hinged supports, and the outer ends of the support rods are hinged to the inner end of the movable block.
8. The waterproof fastening device for road and bridge construction with good movable warning effect according to claim 1, characterized in that: the end face of the inner side of the supporting plate is provided with a ventilation assembly;
the ventilation assembly comprises an impeller, the inner end of the impeller penetrates through the inner wall of the water guide groove to extend to the outside and is connected and fixed with a fan blade, the fan blade is arranged in an inclined structure, a protective cover is covered outside the fan blade, and the outer end of the protective cover is connected and fixed with the end face of the inner side of the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659609.6A CN114232496B (en) | 2021-12-30 | 2021-12-30 | Waterproof fastening device is used in construction of portable warning effectual highway bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659609.6A CN114232496B (en) | 2021-12-30 | 2021-12-30 | Waterproof fastening device is used in construction of portable warning effectual highway bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114232496A true CN114232496A (en) | 2022-03-25 |
| CN114232496B CN114232496B (en) | 2024-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111659609.6A Active CN114232496B (en) | 2021-12-30 | 2021-12-30 | Waterproof fastening device is used in construction of portable warning effectual highway bridge |
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| CN (1) | CN114232496B (en) |
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| Publication number | Publication date |
|---|---|
| CN114232496B (en) | 2024-09-27 |
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