CN111021370A - Method for mounting nodular cast iron pipe by using municipal pipeline groove structure - Google Patents

Method for mounting nodular cast iron pipe by using municipal pipeline groove structure Download PDF

Info

Publication number
CN111021370A
CN111021370A CN201911235003.2A CN201911235003A CN111021370A CN 111021370 A CN111021370 A CN 111021370A CN 201911235003 A CN201911235003 A CN 201911235003A CN 111021370 A CN111021370 A CN 111021370A
Authority
CN
China
Prior art keywords
groove
pipeline
mounting
sliding track
installing
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.)
Pending
Application number
CN201911235003.2A
Other languages
Chinese (zh)
Inventor
王庆龙
侯志强
曾吴兵
方杰
詹群豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Tiesiju Civil Engineering Group Co Ltd CTCE Group
Fifth Engineering Co Ltd of CTCE Group
Original Assignee
China Tiesiju Civil Engineering Group Co Ltd CTCE Group
Fifth Engineering Co Ltd of CTCE Group
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Tiesiju Civil Engineering Group Co Ltd CTCE Group, Fifth Engineering Co Ltd of CTCE Group filed Critical China Tiesiju Civil Engineering Group Co Ltd CTCE Group
Priority to CN201911235003.2A priority Critical patent/CN111021370A/en
Publication of CN111021370A publication Critical patent/CN111021370A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • E02D17/08Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • E02D17/08Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/083Shoring struts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06Accessories therefor, e.g. anchors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)

Abstract

The invention discloses a method for mounting a nodular cast iron pipe by utilizing a municipal pipeline groove structure, which comprises the steps of excavating a foundation trench, mounting a stand column, mounting a horizontal supporting piece, mounting a containment plate, mounting a sliding track, transporting a pipeline, mounting the pipeline and the like, wherein the stand column and the containment plate are combined and matched with the horizontal supporting piece to form a groove supporting structure; a pipeline transportation structure is arranged on the basis of the groove supporting structure, and pipeline transportation can be realized through a transportation beam in sliding fit with the sliding track; the hoisting equipment has the advantages of being small in construction influence, simple and convenient to install and operate and the like, and the problems that the hoisting equipment is low in timeliness, the traffic pressure is increased, and the secondary carrying is increased during municipal pipeline construction can be effectively solved. The device can realize the functions of secondary transportation, installation and positioning and the like of the nodular cast iron pipes of different types, and has the advantages of simple structure, convenient operation, small influence on the environment, reduction of the influence on the hoisting operation along the road and improvement of the installation efficiency.

Description

Method for mounting nodular cast iron pipe by using municipal pipeline groove structure
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a method for mounting a nodular cast iron pipe by utilizing a municipal pipeline groove structure.
Background
When the municipal pipeline installation adopts the fluting construction, in order to prevent that the slot from collapsing, the slot of excavation often takes corresponding support measures according to excavation depth, geological conditions, ground water level condition and the condition of surrounding environment. A crane is often used for moving and hoisting pipelines on a construction site, municipal pipelines are laid below sidewalks or non-motor vehicle lanes, the positions of the crane in the construction process seriously affect the vehicle passing of municipal roads, and if greening trees are arranged on the sidewalks, the difficulty and the construction timeliness of pipeline hoisting operation can be increased.
The current mode of mainly going on through the crane of low tube installation to the ball-milling cast iron pipe at first crane station is located one side of pipeline slot, and the manual work utilizes the rope will wait to install the pipeline segment and fix on crane hook head, and secondly the crane is with pipeline lifting transport way suitable position, and the manual work is supplementary to be gone on low tube, adjust well, process such as installation, carries out the handling installation of next pipeline segment after the rope is unloaded to the manual work at last, and the problem that this kind of mode exists is as follows:
(1) the occupied area is large when the crane works, and two rows of lanes need to be occupied temporarily when the crane performs pipe lowering and hoisting work, so that the traffic relieving pressure is increased; meanwhile, as the pipeline is laid along the road, the crane needs to be continuously adjusted, the work efficiency is reduced, and the use cost of the machine is increased.
(2) When the pipes enter a field, the pipes are firstly stacked on a material field, and then the pipes are stacked along a road by using transportation equipment, so that the secondary carrying cost and the civilized construction cost are increased.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a method for mounting a ductile cast iron pipe by utilizing a municipal pipeline groove structure.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for mounting a nodular cast iron pipe by using a municipal pipeline groove structure comprises the following steps:
(1) excavating a foundation trench: adopting machinery and manpower to carry out groove excavation;
(2) installing a stand column: when unstable strata exist in the trench excavation section, trench excavation and supporting are carried out alternately; after the groove is excavated, correcting the groove wall to enable the groove wall to be relatively flat, closely attaching the edge of the upright post to the groove wall, and vertically driving the upright post into the soil layer at a point position;
(3) installing a horizontal support piece: after the upright columns on the groove walls on the two sides of the groove are installed, the horizontal supporting pieces are installed in time, and the horizontal supporting pieces are installed from bottom to top;
(4) installing a containment plate: vertically inserting the enclosure plates into the upright posts on the wall of the groove on the same side, and enabling the enclosure plates to fall into the bottom of the base groove, so as to ensure that the enclosure plates are tightly attached to the wall of the groove, and sequentially installing the enclosure plates according to the method;
(5) installing a sliding track: according to the length of the transport beam, the sliding track is fixedly arranged below the horizontal support member, and the transport beam is arranged on the sliding track;
(6) pipeline transportation: hoisting the pipeline by using a rope on the transport beam, and transporting the pipeline to an installation position through a sliding track to install a lower pipe;
(7) installing a pipeline: the ball milling cast iron pipe is installed by adopting a chain block to carry out socket installation;
when the pipeline is installed, the lower horizontal supporting piece of the installation area is partially dismantled according to the actual requirements on the site, and the horizontal supporting piece is recovered in time after the pipeline is installed, so that the stability of the side wall of the groove is ensured.
Further, the horizontal supporting piece is an adjustable steel support.
In the step (4), battens are arranged between the adjacent upright columns on the wall of the tank on the same side in order to ensure that the enclosure plate is tightly attached to the tank wall.
Further, in the step (5), the sliding rail is fixedly connected with the horizontal supporting piece through a U-shaped fastener.
In the step (5), pulleys are mounted at two ends of the transport beam, and the transport beam is in sliding fit with the sliding rail through the pulleys; and the sliding track is coated with lubricating oil.
In a further scheme, the upright columns are made of HN-shaped steel, and the sliding tracks are made of C-shaped steel.
The invention has the advantages that:
the invention adopts the combination of the upright posts and the enclosure plates and forms a groove supporting structure by matching with the horizontal supporting piece; a pipeline transportation structure is arranged on the basis of the groove supporting structure, and pipeline transportation can be realized through a transportation beam in sliding fit with the sliding track; the hoisting equipment has the advantages of being small in construction influence, simple and convenient to install and operate, capable of being used repeatedly and the like. The device can realize the functions of secondary transportation, installation and positioning and the like of the nodular cast iron pipes of different types, and has the advantages of simple structure, convenient operation, small influence on the environment, reduction of the influence on the hoisting operation along the road and improvement of the installation efficiency.
Drawings
FIG. 1 is a schematic structural view of a municipal pipeline trench structure according to the invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic longitudinal sectional view of FIG. 1;
reference numerals: 1-upright posts, 2-horizontal supporting pieces, 3-enclosure plates, 4-sliding tracks, 5-transport beams, 6-ropes, 7-battens, 8-installed pipelines, 9-pipelines to be installed and 10-grooves.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the municipal pipeline groove structure capable of transporting the ductile cast iron pipe comprises a groove supporting structure and a pipeline transportation structure; wherein:
the groove supporting structure comprises a plurality of groups of upright columns 1 symmetrically arranged on the opposite inner walls of the groove 10, a horizontal supporting piece 2 is connected between each group of upright columns 1, and a maintenance plate 3 is arranged between adjacent upright columns 1 positioned on the same side of the groove 10; the groove supporting structure further comprises battens 7, and the battens 7 are fixedly installed between adjacent upright columns located on the same side of the groove.
The pipeline transportation structure comprises a sliding track 4 arranged below the horizontal support 2 and a transportation beam 5 in sliding fit with the sliding track 4; the sliding track 4 is fixedly connected with the horizontal support member 2 through a U-shaped fastener (not shown); and the transport beam 5 is provided with a rope 6 for binding the nodular cast iron pipe. Pulleys are installed at two ends of the transport beam 5, and the transport beam 5 is in sliding fit with the sliding rail 4 through the pulleys.
Wherein the upright column 1 is HN steel; the horizontal support 2 is an adjustable steel support; the sliding track 4 is made of C-shaped steel.
A method for mounting a nodular cast iron pipe by using a municipal pipeline groove structure comprises the following steps:
(1) excavating a foundation trench: determining the trench excavation width and depth according to the pipeline diameter, the earthing depth, the width of a working face of a constructor, soil conditions, the underground water level and other factors, and performing trench excavation mechanically and manually;
(2) installing a stand column: when unstable strata exist in the trench 10 excavation section, trench excavation and supporting are alternately carried out; the alternating depth is not more than 1.0m each time, after the groove is excavated, the groove wall is corrected to be relatively flat, the length direction of the groove is based on the distance of every 1.5m, the edge of the upright column 1 is closely attached to the groove wall, and the upright column is vertically driven into the soil layer at the point position by 50cm and is 30cm higher than the groove.
(3) Installing a horizontal support piece: the horizontal supporting piece 2 is an adjustable steel support, the horizontal supporting piece is installed in time after the vertical columns on the groove walls on the two sides of the groove are installed, the horizontal supporting piece is installed from bottom to top, the vertical distance of the supporting points is 1m, so that the vertical columns 1 and the horizontal supporting piece 2 form a temporary stable truss structure, and the supporting is firm;
(4) installing a containment plate: vertically inserting the enclosure plate 3 into the upright columns with the wall on the same side, dropping the enclosure plate into the bottom of the foundation trench, arranging battens 7 in the flanges of the upright columns on the same side along the trench direction, ensuring that the enclosure plate is attached to the wall of the trench, and sequentially installing the enclosure plates according to the method;
(5) installing a sliding track: and (3) according to the length of the transport beam 5, installing and fixing the sliding rail 4 below the horizontal support member 2, firmly installing the sliding rail through a U-shaped fastener, and installing the transport beam 5 on the sliding rail 4. In a preferred embodiment, pulleys are mounted at two ends of the transport beam 5, and the transport beam 5 is in sliding fit with the sliding track 4 through the pulleys; and the lubricating oil is applied to the inside of the sliding rail 4.
(6) Pipeline transportation: hoisting the pipeline 9 to be installed by using the rope 6 on the transport beam 5, and transporting the pipeline 9 to be installed to an installation position through the sliding rail 4 for pipe descending installation;
(7) installing a pipeline: the ball milling cast iron pipe is installed by adopting a chain block to carry out socket installation;
when the pipeline is installed, the lower horizontal supporting piece of the installation area is partially dismantled according to the actual requirements on the site, and the horizontal supporting piece is recovered in time after the pipeline is installed, so that the stability of the side wall of the groove is ensured.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (7)

1. A method for mounting a nodular cast iron pipe by using a municipal pipeline groove structure is characterized by comprising the following steps: the method comprises the following steps:
(1) excavating a foundation trench: adopting machinery and manpower to carry out groove excavation;
(2) installing a stand column: when unstable strata exist in the trench excavation section, trench excavation and supporting are carried out alternately; after the groove is excavated, correcting the groove wall to enable the groove wall to be relatively flat, closely attaching the edge of the upright post to the groove wall, and vertically driving the upright post into the soil layer at a point position;
(3) installing a horizontal support piece: after the upright columns on the groove walls on the two sides of the groove are installed, the horizontal supporting pieces are installed in time, and the horizontal supporting pieces are installed from bottom to top;
(4) installing a containment plate: vertically inserting the enclosure plates into the upright posts on the wall of the groove on the same side, and enabling the enclosure plates to fall into the bottom of the base groove, so as to ensure that the enclosure plates are tightly attached to the wall of the groove, and sequentially installing the enclosure plates according to the method;
(5) installing a sliding track: according to the length of the transport beam, the sliding track is fixedly arranged below the horizontal support member, and the transport beam is arranged on the sliding track;
(6) pipeline transportation: hoisting the pipeline by using a rope on the transport beam, and transporting the pipeline to an installation position through a sliding track to install a lower pipe;
(7) installing a pipeline: the ball milling cast iron pipe is installed by adopting a chain block to carry out socket installation;
when the pipeline is installed, the lower horizontal supporting piece of the installation area is partially dismantled according to the actual requirements on the site, and the horizontal supporting piece is recovered in time after the pipeline is installed, so that the stability of the side wall of the groove is ensured.
2. The mounting method according to claim 1, wherein: in the step (3), the horizontal supporting piece is an adjustable steel support.
3. The mounting method according to claim 1, wherein: in the step (4), in order to ensure that the enclosure plate is tightly attached to the groove wall, battens are arranged between the adjacent upright columns on the groove wall on the same side.
4. The mounting method according to claim 1, wherein: in the step (5), the sliding track is fixedly connected with the horizontal supporting piece through a U-shaped fastener.
5. The mounting method according to claim 1, wherein: in the step (5), pulleys are installed at two ends of the transport beam, and the transport beam is in sliding fit with the sliding rail through the pulleys; and the sliding track is coated with lubricating oil.
6. The mounting method according to any one of claims 1 to 5, wherein: the stand is HN shaped steel.
7. The mounting method according to any one of claims 1 to 5, wherein: the sliding track is made of C-shaped steel.
CN201911235003.2A 2019-12-05 2019-12-05 Method for mounting nodular cast iron pipe by using municipal pipeline groove structure Pending CN111021370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911235003.2A CN111021370A (en) 2019-12-05 2019-12-05 Method for mounting nodular cast iron pipe by using municipal pipeline groove structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911235003.2A CN111021370A (en) 2019-12-05 2019-12-05 Method for mounting nodular cast iron pipe by using municipal pipeline groove structure

Publications (1)

Publication Number Publication Date
CN111021370A true CN111021370A (en) 2020-04-17

Family

ID=70204621

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911235003.2A Pending CN111021370A (en) 2019-12-05 2019-12-05 Method for mounting nodular cast iron pipe by using municipal pipeline groove structure

Country Status (1)

Country Link
CN (1) CN111021370A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111945747A (en) * 2020-08-07 2020-11-17 合肥翰骏环保技术开发有限公司 Municipal administration pipeline slot supporting construction
CN112009960A (en) * 2020-06-30 2020-12-01 上海宝冶集团有限公司 Sliding transportation method of ammonia refrigeration pipeline of snow car ski-track
CN113324097A (en) * 2021-04-20 2021-08-31 中国水利水电第九工程局有限公司 Deep groove excavation construction process
EP3933241A1 (en) * 2020-07-01 2022-01-05 Forschungsinstitut für Flüssigboden GmbH Method for laying piping
CN114277809A (en) * 2021-12-08 2022-04-05 长江生态环保集团有限公司 Movable groove supporting device for agricultural sewage pipe network engineering and construction method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107964960A (en) * 2017-11-22 2018-04-27 山东电力建设第工程公司 A kind of municipal pipeline groove timbering structure and method for protecting support
CN108505607A (en) * 2018-04-25 2018-09-07 安徽鸿佑建设工程有限公司 A kind of municipal works subsoil drain construction technology process and its method
CN208500168U (en) * 2018-05-22 2019-02-15 惠安集睿信息科技有限公司 A kind of pipeline construction hoisting machinery
CN208684245U (en) * 2018-09-19 2019-04-02 关胜 Boom hoisting is used in a kind of installation of urban discharging pipeline
CN110194417A (en) * 2019-05-24 2019-09-03 中国一冶集团有限公司 A kind of lifting pipeline device and its hanging method
CN209557787U (en) * 2018-12-06 2019-10-29 上海金山环境再生能源有限公司 A kind of pipeline hanging apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107964960A (en) * 2017-11-22 2018-04-27 山东电力建设第工程公司 A kind of municipal pipeline groove timbering structure and method for protecting support
CN108505607A (en) * 2018-04-25 2018-09-07 安徽鸿佑建设工程有限公司 A kind of municipal works subsoil drain construction technology process and its method
CN208500168U (en) * 2018-05-22 2019-02-15 惠安集睿信息科技有限公司 A kind of pipeline construction hoisting machinery
CN208684245U (en) * 2018-09-19 2019-04-02 关胜 Boom hoisting is used in a kind of installation of urban discharging pipeline
CN209557787U (en) * 2018-12-06 2019-10-29 上海金山环境再生能源有限公司 A kind of pipeline hanging apparatus
CN110194417A (en) * 2019-05-24 2019-09-03 中国一冶集团有限公司 A kind of lifting pipeline device and its hanging method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112009960A (en) * 2020-06-30 2020-12-01 上海宝冶集团有限公司 Sliding transportation method of ammonia refrigeration pipeline of snow car ski-track
EP3933241A1 (en) * 2020-07-01 2022-01-05 Forschungsinstitut für Flüssigboden GmbH Method for laying piping
DE102020117312A1 (en) 2020-07-01 2022-01-05 Forschungsinstitut für Flüssigboden GmbH privatwirtschaftliches Unternehmen Procedure for laying pipelines
DE102020117312B4 (en) 2020-07-01 2024-08-01 Forschungsinstitut für Flüssigboden GmbH privatwirtschaftliches Unternehmen Methods for laying pipelines
CN111945747A (en) * 2020-08-07 2020-11-17 合肥翰骏环保技术开发有限公司 Municipal administration pipeline slot supporting construction
CN111945747B (en) * 2020-08-07 2022-01-11 广东宏建建设有限公司 Municipal administration pipeline slot supporting construction
CN113324097A (en) * 2021-04-20 2021-08-31 中国水利水电第九工程局有限公司 Deep groove excavation construction process
CN114277809A (en) * 2021-12-08 2022-04-05 长江生态环保集团有限公司 Movable groove supporting device for agricultural sewage pipe network engineering and construction method thereof

Similar Documents

Publication Publication Date Title
CN111021370A (en) Method for mounting nodular cast iron pipe by using municipal pipeline groove structure
CN108343087B (en) Prefabricated part transportation and assembly equipment system and construction method thereof
CN210031842U (en) Combined supporting system for adjacent deep foundation pit based on row piles, connecting beams and counter-pulling anchor cables
CN113482044B (en) Power pipeline relocation method for invading subway station structure
CN112240025A (en) Station foundation pit engineering cover-excavation construction method
CN102060199B (en) Transportation method for constructing high mountain building
CN212895948U (en) Curved steel beam pushing system
CN108951642B (en) Reinforced structure capable of preventing foundation pit from rising and crossing existing tunnel and construction method
US6406220B1 (en) Arched support structure
CN108203981B (en) System and method for installing steel support in cover and excavation method
CN110565667B (en) Steel sheet pile cofferdam with grouting platform
CN214695953U (en) Domestic sewage drainage pipe that municipal works were used
CN110552519A (en) Deep foundation pit assembled type safe passage construction method
CN211735504U (en) Can transport municipal administration pipeline slot structure of nodular cast-iron pipe
CN113073683A (en) Temporary suspension device for existing pipeline and construction method
CN114701949A (en) Method for installing main girder of bridge crane of main power house of pump station
CN209779680U (en) a newly-built pipeline protection device that intersects for underground pipe gallery construction
CN108840234B (en) Hoisting device for prefabricated section and hoisting method thereof
CN205999893U (en) Assembling mobile platform for pile sinking
CN220726295U (en) Mobile platform for shield tunnel lower operation
CN220745100U (en) Pipeline burying and transferring device
CN216327745U (en) Fixing device is used in municipal works drainage pipe construction
CN219621578U (en) Trestle for offshore photovoltaic operation and maintenance
CN216344326U (en) Pipeline erecting device
CN221589692U (en) Protection structure of longitudinal laying pipeline in subway open cut section

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200417