CN111945583A - Edge protection construction method and device for hanging basket end of cantilever grouting beam - Google Patents
Edge protection construction method and device for hanging basket end of cantilever grouting beam Download PDFInfo
- Publication number
- CN111945583A CN111945583A CN202010644126.8A CN202010644126A CN111945583A CN 111945583 A CN111945583 A CN 111945583A CN 202010644126 A CN202010644126 A CN 202010644126A CN 111945583 A CN111945583 A CN 111945583A
- Authority
- CN
- China
- Prior art keywords
- protection
- hanging basket
- stand
- fixed
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- E01D21/10—Cantilevered erection
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention provides a construction method for protecting the edge of an end of a hanging basket of a suspended irrigation beam. The invention also provides a side protection device for the hanging basket end of the suspension irrigation beam, which comprises two groups of folding protective guards, wherein each group of folding protective guards comprises a fixing buckle arranged on the inner side of the hanging basket rhombus frame, a side protection upright post, a middle protection upright post and a folding protective fence arranged between the side protection upright post and the middle protection upright post. The folding movable protective net replaces a fixed guardrail, the defects of traditional fixed protection are overcome by changing the installation mode and the using method of the protective net, and the folding movable protective net is convenient, efficient and convenient to construct.
Description
Technical Field
The invention relates to a method and a device for the near-edge protection construction of an end of a hanging basket of a suspension grouting beam, and belongs to the technical field of the safe near-edge protection of the end in the construction process of the hanging basket of the suspension grouting beam.
Background
Along with the construction and development of high-speed railways in China, more and more large-span bridges appear, and large-span continuous beams are mostly cast by hanging basket section cantilever. Hang the basket and regard as the key control structure who irritates in the roof beam construction by hanging, decide the safety of whole work progress, hang the basket structure at present and mostly be special design, its security has obtained great guarantee. While the edge protection is used as a safety ring in the construction of the end of the cradle, safety accidents are frequently caused by the fact that construction is not standard, constructors are numb in mind and the like. At present, the end protection of the hanging basket mainly has two forms: firstly, an iron chain is arranged at the end of the cradle for protection, the protection area is small, more, a warning intention is played, and the protection purpose in a real sense cannot be achieved; secondly, the protective railing is fixed at the welding edge of the end of the cradle, the cradle is dismantled when running, and the cradle is welded and installed again after running in place, so that labor and time are wasted, the working efficiency is low, and meanwhile, due to untimely installation, great hidden danger is caused to the site safety.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a construction method and a device for the edge protection of the end of a hanging basket of a suspension pouring beam, wherein the end protection is formed by using a railing column and a foldable net piece, a structural system with complete edge protection is provided, the telescopic function is achieved by mounting a pulley block at the bottom of the railing column, the stretching protection function before walking and the folding function in the walking process are realized, a fastener is welded on a rhombic frame, the edge railing column is fixed by using the fastener, and the railing moves along with the walking of the hanging basket when the hanging basket walks; the telescopic type limb protection can be recovered in time after the cradle runs, so that safety accidents are effectively avoided; the movable wheels are matched to realize synchronous movement with the traveling of the cradle, so that the working efficiency is improved.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a side protection construction method for the end of a suspended irrigation beam hanging basket, which comprises the following steps:
(1) fixing buckles are respectively installed on the inner sides of the pair of hanging basket rhombic frames on the section concrete;
(2) fixing two edge protection stand columns of the edge protection device at the end of the hanging and grouting beam hanging basket between the two hanging basket rhombus frames through fixing buckles, and enabling two middle protection stand columns to be located between the two edge protection stand columns;
(3) when the cradle is in a non-running state, the middle protective upright columns are stretched towards the middle, so that the folding protective fences between the side protective upright columns and the middle protective upright columns are stretched, then the two ends of the iron chain are respectively hung on the middle upright column iron chain buckle plates arranged on the two middle protective upright columns, and the protection between the cradle rhombic frames is completed;
(4) before the hanging basket runs, the iron chain is detached from the middle upright post clamping plate fixing bolt, and the two folding protective fences are folded towards two sides respectively.
Step (1) the inner sides of a pair of hanging basket rhombus frames on the section concrete are respectively provided with a fixed buckle and step (2) two edge protection upright columns of the hanging and pouring beam hanging basket end edge protection device are fixed between the two hanging basket rhombus frames through the fixed buckles, and the process specifically comprises the following steps: the fixed plate is arranged on the hanging basket rhombus frame, two lug plates with bolt holes are arranged on the fixed plate, bolts are utilized to penetrate through the bolt holes in the lug plates and the bolt holes in the end plates on one sides of the two buckling plates, the two buckling plates are mutually buckled to form a closed rectangular frame opening, the edge protection stand column is fixed in the rectangular frame opening, and then the bolts are inserted into the bolt holes in the end plates on the other sides of the two buckling plates to be locked.
And (3) the iron chain is more than 2 layers.
Pulleys are arranged at the bottoms of the edge protection upright post and the middle protection upright post, and the edge protection upright post and the middle protection upright post are supported by the pulleys in the extension process of the folding protection fence in the step (3) and the folding protection fence in the step (4) respectively towards two sides; and (4) after the two folding protective fences are folded towards two sides respectively, when the hanging basket runs, the edge protective upright post and the middle protective upright post are supported by the pulleys to run synchronously along with the hanging basket.
And (3) respectively arranging middle upright cardboard fixing bolts on the side protection upright and the middle protection upright, and (4) respectively installing the fixing cardboard on the side upright cardboard fixing bolts and the middle upright cardboard fixing bolts after the two folding protection fences are folded towards two sides, so that the side protection upright and the middle protection upright which are positioned at the same side are mutually locked.
The invention also provides a side protection device for the hanging basket end of the suspended irrigation beam based on the construction method, which comprises two groups of folding protective guards, wherein each group of folding protective guards comprises a fixing buckle arranged on the inner side of the rhombic frame of the hanging basket, a side protection upright post, a middle protection upright post and a folding protective fence arranged between the side protection upright post and the middle protection upright post, the bottoms of the side protection upright post and the middle protection upright post are respectively provided with an upright post base, the bottom of the upright post base is provided with a pulley, the side protection upright post and the middle protection upright post are respectively provided with a middle upright post clamping plate fixing bolt for hanging the fixing clamping plate, and the middle protection upright post is provided with a middle upright post iron chain clamping plate for hanging more than 2 layers of iron chains.
The fixed buckle is including being used for fixing fixed plate and a pair of buckle plate at hanging basket rhombus frame inboard, be equipped with the otic placode of two bolt holes on the fixed plate, the mutual lock in two buckle plate position forms the rectangle frame mouth, the buckle plate both sides are equipped with the end plate of bolt hole respectively, the end plate of buckle plate one side is located between two otic placodes of fixed plate, it is fixed to pass the bolt hole of buckle plate end plate and the bolt hole locking of otic placode respectively by the bolt, the end plate of buckle plate opposite side is fixed through the bolt indentation, the edge protection railing is locked in the rectangle frame mouth.
The invention has the beneficial effects based on the technical scheme that:
(1) according to the invention, the inner side surfaces of the middle protective upright posts are connected with the middle protective upright posts on the left and right sides by using the iron chains, so that a temporary protective structure of the beam end is realized, the iron chains are temporarily dismantled during construction and used as construction passages for personnel to enter the segments, the iron chains are timely sealed after the personnel enter and exit, the totally-closed protection of the end is realized, and the safety protection of field construction is ensured without dead angles and free spaces;
(2) according to the invention, the edge protection construction method and device for the end head of the hanging basket of the cantilever beam can be realized by welding the fixing plate on the diamond frame of the hanging basket and installing the edge protection upright post by utilizing the buckle; meanwhile, after the protective net is folded, the fixing clamp plate is fastened and fixed with the middle protective upright and the front side of the edge protective upright to the whole device, so that the integrity of synchronous running of the edge protective system and the hanging basket is ensured, and convenience and high efficiency of timely recovery of edge protective after running are realized;
(3) according to the construction method and the device for the near-edge protection of the end of the suspended irrigation beam hanging basket, the protection upright column can be vertically welded on the upright column base rod, meanwhile, the pulley is arranged on the upright column base rod, and the high efficiency and convenience of the near-edge protection installation can be realized through the pulley movement;
(4) the near-edge protection construction method and device for the end of the suspended irrigation beam hanging basket are convenient to disassemble and recycle, and cost is saved.
Drawings
FIG. 1 is a schematic view of an extended front view structure of the edge protection device of the end of the suspension irrigation beam hanging basket of the present invention;
FIG. 2 is a schematic front view of the collapsed configuration of the shield apparatus provided by the present invention;
FIG. 3 is a schematic diagram of a three-dimensional structure of a center pillar provided by the present invention;
fig. 4 is a schematic view of a front structure of the protection net provided by the present invention;
FIG. 5 is a schematic view of a card board structure provided by the present invention;
fig. 6 is a schematic view of a buckle structure provided by the present invention.
In the figure: 1-middle protective upright, 1 a-middle upright clamping plate fixing bolt, 1 b-middle upright iron chain clamping plate, 2-side protective upright, 2 a-side upright clamping plate fixing bolt, 3-folding protective fence, 4-iron chain, 5-fixing buckle, 5 a-clamping plate, 5 b-fixing plate, 5 c-long bolt, 5 d-short bolt, 6-hanging basket diamond frame, 7-upright base rod, 8-pulley, 9-fixing clamping plate and 10-section concrete.
Detailed Description
The invention is further illustrated by the following figures and examples.
The invention provides a method for protecting and constructing the near edge of the end of a suspended girder basket of a suspended irrigation beam, which comprises the following steps with reference to fig. 1 to 6:
(1) fixing buckles are respectively installed on the inner sides of a pair of hanging basket rhombic frames on the section concrete 10;
(2) fixing two edge protection stand columns of the edge protection device at the end of the hanging and grouting beam hanging basket between the two hanging basket rhombus frames through fixing buckles, and enabling two middle protection stand columns to be located between the two edge protection stand columns;
(3) when the cradle is in a non-running state, the middle protective upright columns are stretched towards the middle, so that the folding protective fences between the side protective upright columns and the middle protective upright columns are stretched, then the two ends of the iron chain are respectively hung on the middle upright column iron chain buckle plates arranged on the two middle protective upright columns, and the protection between the cradle rhombic frames is completed;
(4) before the hanging basket runs, the iron chain is detached from the middle upright post clamping plate fixing bolt, and the two folding protective fences are folded towards two sides respectively.
Step (1) the inner sides of a pair of hanging basket rhombus frames on the section concrete are respectively provided with a fixed buckle and step (2) two edge protection upright columns of the hanging and pouring beam hanging basket end edge protection device are fixed between the two hanging basket rhombus frames through the fixed buckles, and the process specifically comprises the following steps: the fixed plate is arranged on the hanging basket rhombus frame, two lug plates with bolt holes are arranged on the fixed plate, bolts are utilized to penetrate through the bolt holes in the lug plates and the bolt holes in the end plates on one sides of the two buckling plates, the two buckling plates are mutually buckled to form a closed rectangular frame opening, the edge protection stand column is fixed in the rectangular frame opening, and then the bolts are inserted into the bolt holes in the end plates on the other sides of the two buckling plates to be locked.
And (3) the iron chain is more than 2 layers.
Pulleys are arranged at the bottoms of the edge protection upright post and the middle protection upright post, and the edge protection upright post and the middle protection upright post are supported by the pulleys in the extension process of the folding protection fence in the step (3) and the folding protection fence in the step (4) respectively towards two sides; and (4) after the two folding protective fences are folded towards two sides respectively, when the hanging basket runs, the edge protective upright post and the middle protective upright post are supported by the pulleys to run synchronously along with the hanging basket.
And (3) respectively arranging middle upright cardboard fixing bolts on the side protection upright and the middle protection upright, and (4) respectively installing the fixing cardboard on the side upright cardboard fixing bolts and the middle upright cardboard fixing bolts after the two folding protection fences are folded towards two sides, so that the side protection upright and the middle protection upright which are positioned at the same side are mutually locked.
The invention also provides a side protection device for the hanging basket end of the hanging and grouting beam based on the construction method, which comprises two groups of folding protective guards, wherein each group of folding protective guards comprises a fixed buckle 5 arranged on the inner side of a hanging basket diamond frame 6, a side protection upright 2 arranged on the inner side of the hanging basket diamond frame through the fixed buckle, a middle protection upright 1 and a folding protection fence 3 arranged between the side protection upright and the middle protection upright, upright bases 7 are arranged at the bottoms of the side protection upright and the middle protection upright, pulleys 8 are arranged at the bottom of the upright bases, a middle upright fixing bolt 1a and a side upright fixing bolt 2a for hanging a fixed clamping plate 9 are respectively arranged on the side protection upright and the middle protection upright, and a middle upright fixing plate 1b for hanging more than 2 layers of iron chains 4 is arranged on the middle protection upright.
Fixed buckle is including being used for fixing fixed plate 5b and a pair of buckle plate 5a at string basket rhombus frame inboard, be equipped with the otic placode of two bolt holes on the fixed plate, the mutual lock in two buckle plate positions forms the rectangle frame mouth, the buckle plate both sides are equipped with the end plate of bolt hole respectively, the end plate of buckle plate one side is located between two otic placodes of fixed plate, it is fixed to pass the bolt hole of buckle plate end plate and the bolt hole locking of otic placode respectively by bolt (stay bolt 5c), the end plate of buckle plate opposite side is fixed through bolt (stay bolt 5d) indentation, the edge protection railing is locked in the rectangle frame mouth.
In the embodiment, the fixing plates are welded on a diamond frame of a hanging basket, the net distance between the two fixing plates 5b is 5cm, the size is 5cm multiplied by 5cm, and the wall thickness is 1 cm; the diameter of the bolt hole formed in the fixing plate is 20 mm.
According to the construction method and the device for the near-edge protection of the end of the suspended irrigation beam hanging basket, the fixed guardrail is replaced by the foldable and movable protective net, the defects of the traditional fixed protection are overcome by changing the installation mode and the use method of the protection, and the construction method and the device are convenient and efficient and convenient to construct.
Modifications and variations of the present invention will be obvious to those skilled in the art in light of the foregoing description, and it is intended to cover in the appended claims all such modifications and variations as fall within the true spirit and scope of the invention.
Claims (7)
1. A construction method for protecting the edge of the end of a suspended girder basket of a suspended irrigation beam is characterized by comprising the following steps:
(1) fixing buckles are respectively installed on the inner sides of the pair of hanging basket rhombic frames on the section concrete;
(2) fixing two edge protection stand columns of the edge protection device at the end of the hanging and grouting beam hanging basket between the two hanging basket rhombus frames through fixing buckles, and enabling two middle protection stand columns to be located between the two edge protection stand columns;
(3) when the cradle is in a non-running state, the middle protective upright columns are stretched towards the middle, so that the folding protective fences between the side protective upright columns and the middle protective upright columns are stretched, then the two ends of the iron chain are respectively hung on the middle upright column iron chain buckle plates arranged on the two middle protective upright columns, and the protection between the cradle rhombic frames is completed;
(4) before the hanging basket runs, the iron chain is detached from the iron chain buckle plate of the middle upright post, and the two folding protective fences are folded towards two sides respectively.
2. The near-edge protection construction method for the end head of the suspended irrigation beam hanging basket according to claim 1, characterized in that: step (1) the inner sides of a pair of hanging basket rhombus frames on the section concrete are respectively provided with a fixed buckle and step (2) two edge protection upright columns of the hanging and pouring beam hanging basket end edge protection device are fixed between the two hanging basket rhombus frames through the fixed buckles, and the process specifically comprises the following steps: the fixed plate is arranged on the hanging basket rhombus frame, two lug plates with bolt holes are arranged on the fixed plate, bolts are utilized to penetrate through the bolt holes in the lug plates and the bolt holes in the end plates on one sides of the two buckling plates, the two buckling plates are mutually buckled to form a closed rectangular frame opening, the edge protection stand column is fixed in the rectangular frame opening, and then the bolts are inserted into the bolt holes in the end plates on the other sides of the two buckling plates to be locked.
3. The near-edge protection construction method for the end head of the suspended irrigation beam hanging basket according to claim 1, characterized in that: and (3) the iron chain is more than 2 layers.
4. The near-edge protection construction method for the end head of the suspended irrigation beam hanging basket according to claim 1, characterized in that: pulleys are arranged at the bottoms of the edge protection upright post and the middle protection upright post, and the edge protection upright post and the middle protection upright post are supported by the pulleys in the extension process of the folding protection fence in the step (3) and the folding protection fence in the step (4) respectively towards two sides; and (4) after the two folding protective fences are folded towards two sides respectively, when the hanging basket runs, the edge protective upright post and the middle protective upright post are supported by the pulleys to run synchronously along with the hanging basket.
5. The near-edge protection construction method for the end head of the suspended irrigation beam hanging basket according to claim 1, characterized in that: and (3) respectively arranging a side stand column clamping plate fixing bolt and a middle stand column clamping plate fixing bolt on the side protection stand column and the middle protection stand column, and (4) respectively installing a fixing clamping plate on the side stand column clamping plate fixing bolt and the middle stand column clamping plate fixing bolt after the two folding protection fences are folded towards two sides, so that the side protection stand column and the middle protection stand column which are positioned at the same side are mutually locked.
6. A suspension irrigation beam hanging basket end edge protection device based on the construction method of claim 5 is characterized in that: including two sets of folding rail guards, the folding rail guard of every group package expands installs in the inboard fixed buckle of hanging basket rhombus frame, install the limit protection stand at hanging basket rhombus frame inboard through fixed buckle, well protection stand and install in the folding protective fence between limit protection stand and well protection stand, the bottom of limit protection stand and well protection stand all is equipped with the stand base, the bottom of stand base is equipped with the pulley, be equipped with respectively on limit protection stand and the well protection stand and be used for hanging the limit stand cardboard fixing bolt and well stand cardboard fixing bolt of establishing fixed cardboard, be equipped with on the well protection stand and be used for hanging the well stand iron chain buckle of establishing 2 layers of above iron chains.
7. The edge protector for the end of a suspended irrigation beam basket according to claim 5, wherein: the fixed buckle is including being used for fixing fixed plate and a pair of buckle plate at hanging basket rhombus frame inboard, be equipped with the otic placode of two bolt holes on the fixed plate, the mutual lock in two buckle plate position forms the rectangle frame mouth, the buckle plate both sides are equipped with the end plate of bolt hole respectively, the end plate of buckle plate one side is located between two otic placodes of fixed plate, it is fixed to pass the bolt hole of buckle plate end plate and the bolt hole locking of otic placode respectively by the bolt, the end plate of buckle plate opposite side is fixed through the bolt indentation, the edge protection railing is locked in the rectangle frame mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644126.8A CN111945583B (en) | 2020-07-07 | 2020-07-07 | Edge-facing protection construction method and device for end of suspended irrigation beam hanging basket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644126.8A CN111945583B (en) | 2020-07-07 | 2020-07-07 | Edge-facing protection construction method and device for end of suspended irrigation beam hanging basket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111945583A true CN111945583A (en) | 2020-11-17 |
| CN111945583B CN111945583B (en) | 2022-06-24 |
Family
ID=73341777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010644126.8A Active CN111945583B (en) | 2020-07-07 | 2020-07-07 | Edge-facing protection construction method and device for end of suspended irrigation beam hanging basket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111945583B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047296A (en) * | 2021-05-06 | 2021-06-29 | 江苏旺材科技有限公司 | A assembled protector for facing limit is enclosed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1972739A2 (en) * | 2007-03-15 | 2008-09-24 | Bromall, S.L. | Extendable safety guardrail |
| CN205295987U (en) * | 2016-01-12 | 2016-06-08 | 福建正扬科技有限公司 | Lead way apart from response intelligence warning rail guard |
| CN205558473U (en) * | 2016-04-20 | 2016-09-07 | 象山艾尔沃特智能科技有限公司 | Safety barrier for power equipment |
| CN208106081U (en) * | 2018-04-13 | 2018-11-16 | 天津和顺思达文化传播有限公司 | A kind of packaged type protective fence |
| CN209760990U (en) * | 2019-03-22 | 2019-12-10 | 广州市诚利建设工程有限公司 | Building construction protective fence |
-
2020
- 2020-07-07 CN CN202010644126.8A patent/CN111945583B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1972739A2 (en) * | 2007-03-15 | 2008-09-24 | Bromall, S.L. | Extendable safety guardrail |
| CN205295987U (en) * | 2016-01-12 | 2016-06-08 | 福建正扬科技有限公司 | Lead way apart from response intelligence warning rail guard |
| CN205558473U (en) * | 2016-04-20 | 2016-09-07 | 象山艾尔沃特智能科技有限公司 | Safety barrier for power equipment |
| CN208106081U (en) * | 2018-04-13 | 2018-11-16 | 天津和顺思达文化传播有限公司 | A kind of packaged type protective fence |
| CN209760990U (en) * | 2019-03-22 | 2019-12-10 | 广州市诚利建设工程有限公司 | Building construction protective fence |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047296A (en) * | 2021-05-06 | 2021-06-29 | 江苏旺材科技有限公司 | A assembled protector for facing limit is enclosed |
| CN113047296B (en) * | 2021-05-06 | 2022-06-03 | 江苏旺材科技有限公司 | A assembled protector for facing limit is enclosed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111945583B (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212656515U (en) | Adjustable movable scaffold | |
| CN111945583B (en) | Edge-facing protection construction method and device for end of suspended irrigation beam hanging basket | |
| CN214831957U (en) | Assembled multi-high-rise steel column butt joint operation platform | |
| CN202899600U (en) | Construction site limb quick installation and removal protecting device | |
| CN213013970U (en) | Edge protection device for hanging basket end of cantilever irrigation beam | |
| CN110847589A (en) | Scaffold with safety protection mechanism and building method | |
| CN106120570A (en) | A kind of job platform for the construction of cap secondary | |
| CN107059641B (en) | Goods shelf type pier body outer scaffold | |
| CN215252372U (en) | Steel sheet combination beam bridge is construction combination formula protector across road | |
| CN211498488U (en) | Highway and railway dual-purpose bridge movable railway hard protection platform | |
| WO2019047300A1 (en) | Attachment type protection roof extending across highway for continuous girder | |
| CN104818859B (en) | The installation method of orbit traffic overhead station operation platform | |
| CN211115159U (en) | Highway bridge construction safety device | |
| CN109537868B (en) | Portable operation platform for hoisting assembled main beams | |
| CN212533700U (en) | Pin-connected panel staple bolt platform of bent cap construction usefulness | |
| CN216739303U (en) | Auxiliary hanging bracket for railway bridge and culvert construction | |
| CN206034301U (en) | A work platform for construction of cap secondary | |
| CN217231504U (en) | Folding type externally-hung basket for construction of wet joint of highway bridge | |
| CN213772931U (en) | Stretching-in type viaduct side construction crawling ladder | |
| CN116289597A (en) | Telescopic totally-enclosed protection device for large cantilever bent cap | |
| CN216196793U (en) | Install retractable safety protection passageway on platform of unloading | |
| CN212200088U (en) | Be used for prefabricated T roof beam diaphragm construction equipment | |
| CN212270694U (en) | Construction platform for stayed-cable beam bottom | |
| CN218581144U (en) | Large steel pipe support parallel-connection movable construction platform | |
| CN220079765U (en) | Cover beam ladder cage wall connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |