CN112227500A - Pipeline laying device for road construction for municipal construction - Google Patents

Pipeline laying device for road construction for municipal construction Download PDF

Info

Publication number
CN112227500A
CN112227500A CN202011216435.1A CN202011216435A CN112227500A CN 112227500 A CN112227500 A CN 112227500A CN 202011216435 A CN202011216435 A CN 202011216435A CN 112227500 A CN112227500 A CN 112227500A
Authority
CN
China
Prior art keywords
pipeline
slow
descending
slow descending
laying device
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
CN202011216435.1A
Other languages
Chinese (zh)
Inventor
贾保正
卢永红
李俊
汪定国
吴晶
冷凯凯
索联宇
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.)
Wuhan Zhongxin Municipal Construction Co ltd
Wuhan Hanyang Municipal Construction Group Co Ltd
Original Assignee
Wuhan Zhongxin Municipal Construction Co ltd
Wuhan Hanyang Municipal Construction Group Co Ltd
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 Wuhan Zhongxin Municipal Construction Co ltd, Wuhan Hanyang Municipal Construction Group Co Ltd filed Critical Wuhan Zhongxin Municipal Construction Co ltd
Priority to CN202011216435.1A priority Critical patent/CN112227500A/en
Publication of CN112227500A publication Critical patent/CN112227500A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/06Methods of, or installations for, laying sewer pipes
    • 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)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

The invention belongs to the technical field of municipal construction, and particularly relates to a pipeline laying device for road construction for municipal construction. Sliding clamping grooves are formed in two sides of the interior of the slow descending rail, and a pair of slow descending racks is arranged in the slow descending rail; the interior of the slow descending track is movably clamped with a pipeline slow descending vehicle, and one side of the lower end of the pipeline slow descending vehicle is movably clamped in sliding clamping grooves on two sides of the slow descending track through sliding rollers; the left side of the lower end of the pipeline slow descending vehicle is provided with a pair of eccentric jacking wheels; the eccentric jacking wheel is clamped between the two slowly-descending racks, the extending clamping columns connected to the outer sides of the axle centers of the eccentric jacking wheels are clamped on the slowly-descending racks, and the top ends of the extending clamping columns are inserted into the sliding clamping grooves to perform jacking limiting. It realizes that the slow gliding of pipeline guarantees that the pipeline can be safe carry inside the construction pot hole, in addition, has super high-efficient auxiliary action when using overlength pipe laying, avoids the problem of traditional crane hoist and mount difficulty.

Description

Pipeline laying device for road construction for municipal construction
Technical Field
The invention belongs to the technical field of municipal construction, and particularly relates to a pipeline laying device for road construction for municipal construction.
Background
The process of municipal construction involves the laying of pipelines, and the process of pipeline laying involves a series of procedures such as pipeline conveying, cutting and installation.
Pipeline laying is a consuming time and wasting force's engineering, is connected the pipeline with the pipeline and lays to reach the communicating purpose of all pipe connections, when present pipeline laying, for the convenience of can be perfect laminating between pipeline and the pipeline be connected, laying process need rotate the pipeline, but because partial large-scale pipeline weight is great, needs equipment to cooperate the transport.
At present, no equipment which can facilitate the carrying of large and heavy pipelines exists in the laying process, and hoisting is completely carried out by a crane; therefore, the pipeline laying efficiency is low, the labor intensity of workers is high, and the hoisting equipment is greatly limited when the overlong pipeline is laid.
Disclosure of Invention
Aiming at solving the problems of the defects and the shortcomings of the prior art; the pipeline laying device for road construction for municipal construction is simple in structure, reasonable in design and convenient to use, the slow descending rail is matched with the pipeline fixing vehicle, the pipeline is slowly slid downwards to ensure that the pipeline can be safely conveyed into a construction pit groove, and in addition, the pipeline laying device has an ultra-high-efficiency auxiliary effect when being applied to laying of an ultra-long pipeline, and the problem that a traditional crane is difficult to hoist is solved.
In order to achieve the purpose, the invention adopts the technical scheme that: the device comprises a horizontal translation bracket, a supporting roller, a rotary connecting shaft, a feeding shovel frame, a feeding lever, a rotary adjusting shaft, a slow descending track, a supporting balance seat and a pipeline slow descending vehicle; the upper end of the horizontal translation support is provided with a plurality of supporting rollers, the right end of the horizontal translation support is connected with a slow descending track through a rotary adjusting shaft, and the lower end of the slow descending track is fixed inside the pipeline laying groove through a supporting balance seat; wherein; the slow descending rail is of a concave structure, sliding clamping grooves are formed in two sides of the interior of the slow descending rail, and a pair of slow descending racks is arranged in the interior of the slow descending rail; the pipeline slow-descending truck is movably clamped inside the slow-descending track, a pipeline lifting frame is arranged on the upper surface of the pipeline slow-descending truck, a pair of sliding rollers are arranged on the right side of the lower end of the pipeline slow-descending truck, and the sliding rollers are movably clamped inside the sliding clamping grooves on the two sides of the slow-descending track; the left side of the lower end of the pipeline slow descending vehicle is provided with a pair of eccentric jacking wheels; the eccentric jacking wheel is clamped between the two slow descending racks, the extension clamping column connected to the outer side of the axle center of the eccentric jacking wheel is clamped on the slow descending racks, and the top end of the extension clamping column is inserted in the sliding clamping groove to carry out jacking limiting; the two eccentric jacking wheels are connected with a double-head driving motor in the middle through a fixed support.
Preferably, the top of the lower end of the slow descending track is provided with a pair of open grooves, and the open grooves and the extending clamping columns are kept corresponding to each other to realize outward overturning and pipe unloading of the pipeline slow descending vehicle.
Preferably, four groups of fixed seats are arranged on the outer side of the horizontal translation bracket.
Preferably, the left end of the horizontal translation support is connected with a feeding shovel frame through a rotating connecting shaft, and the middle of the rotating connecting shaft is connected with a feeding lever.
Preferably, a lever caulking groove is arranged in the middle of the supporting roller, and the lever caulking groove is in matched clamping connection with the feeding lever.
Preferably, the inclination angle of the slow descending track ranges from 30 degrees to 60 degrees.
Preferably, the pipeline lifting frame is perfectly attached to the outer edge of the pipeline to be laid.
Preferably, the slow descending track and the pipeline laying equipment array formed by the pipeline slow descending vehicles are matched to maintain synchronous operation.
Preferably, the pipeline lifting frame is replaced by a pipeline fixing woven belt and a fixing buckle; the pipeline fixing woven belt is fixed on the right side of the upper surface of the pipeline slow descending vehicle; a fixing buckle is inserted in the left side of the upper surface of the pipeline slow descending vehicle; the pipeline fixing woven belt is wrapped on the surface of the pipeline and then inserted into the fixing buckle, and the pipeline fixing woven belt is fixed through the buckle.
After adopting the structure, the invention has the beneficial effects that: it adopts the cooperation of slowly falling track and pipeline fixing car, realizes that the slow gliding of pipeline guarantees that the pipeline can be safe carry the construction pot hole inside, in addition, has super high-efficient auxiliary action when using overlength pipe laying, avoids the problem of traditional crane hoist and mount difficulty.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail by the following specific embodiments and the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a descent control track 7 according to the present invention;
FIG. 3 is a schematic structural view of the pipe descent control vehicle 9 of the present invention;
FIG. 4 is a schematic structural view of the horizontal translation support 1 of the present invention;
fig. 5 is a schematic view of a second fixing mode of the pipe descent control vehicle 9 according to the present invention;
description of reference numerals: horizontal translation support 1, supporting roller 2, swivelling joint axle 3, material loading shovel frame 4, material loading lever 5, rotation regulation axle 6, slowly fall track 7, support balanced seat 8, pipeline slowly fall car 9, slide groove 10, slowly fall rack 11, open groove 12, slide roller 13, fixed bolster 14, double-end driving motor 15, eccentric jacking wheel 16, extend joint post 17, pipeline lift frame 18, fixing base 19, lever caulking groove 20, the fixed braid over braid 20 of pipeline, fixed knot 21.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
Referring to fig. 1 to 4, the following technical solutions are adopted in the present embodiment: the device comprises a horizontal translation bracket 1, a supporting roller 2, a rotary connecting shaft 3, a feeding shovel frame 4, a feeding lever 5, a rotary adjusting shaft 6, a slow descending track 7, a supporting balance seat 8 and a pipeline slow descending vehicle 9; the upper end of the horizontal translation support 1 is provided with a plurality of supporting rollers 2, the right end of the horizontal translation support 1 is connected with a slow descending track 7 through a rotary adjusting shaft 6, and the lower end of the slow descending track 7 is fixed in the pipeline laying groove through a supporting balance seat 8; wherein; the slow descending rail 7 is of a concave structure, sliding clamping grooves 10 are formed in two sides of the interior of the slow descending rail 7, and a pair of slow descending racks 11 are arranged in the interior of the slow descending rail 7; the pipeline slow-descending vehicle 9 is movably clamped inside the slow-descending track 7, the pipeline lifting frame 18 is arranged on the upper surface of the pipeline slow-descending vehicle 9, the right side of the lower end of the pipeline slow-descending vehicle 9 is provided with a pair of sliding rollers 13, and the sliding rollers 13 are movably clamped inside the sliding clamping grooves 10 on the two sides of the slow-descending track 7; a pair of eccentric jacking wheels 16 is arranged on the left side of the lower end of the pipeline slow descending vehicle 9; an eccentric jacking wheel 16 is clamped between the two slow-descending racks 11, an extension clamping column 17 connected to the outer side of the axis of the eccentric jacking wheel 16 is clamped on the slow-descending racks 11, and the top end of the extension clamping column 17 is inserted into the sliding clamping groove 10 for jacking and limiting; two eccentric jacking wheels 16 are connected with a double-head driving motor 15 in the middle through a fixed bracket 14.
The top of the lower end of the slow descending track 7 is provided with a pair of open grooves 12, and the open grooves 12 and the extending clamping columns 17 are kept corresponding to realize that the pipeline slow descending vehicle 9 overturns outwards to unload pipes; four groups of fixed seats 19 are arranged on the outer side of the horizontal translation bracket 1; the left end of the horizontal translation bracket 1 is connected with a feeding shovel frame 4 through a rotary connecting shaft 3, and the middle of the rotary connecting shaft 3 is connected with a feeding lever 5; a lever caulking groove 20 is formed in the middle of the supporting roller 2, and the lever caulking groove 20 is matched and clamped with the feeding lever 5; the inclination angle range of the slow descending track 7 is 30-60 degrees; the pipeline lifting frame 18 is perfectly attached to the outer edge of the pipeline to be laid; and the slow descending track 7 and a pipeline laying equipment array consisting of the pipeline slow descending vehicles 9 are matched to keep synchronous operation. The pipeline lifting frame 18 is replaced by a pipeline fixing woven belt 20 and a fixing buckle 21; the pipeline fixing woven belt 20 is fixed on the right side of the upper surface of the pipeline slow descending vehicle; a fixing buckle 21 is inserted in the left side of the upper surface of the pipeline slow descending vehicle; the pipeline fixing woven belt 20 is wrapped on the surface of the pipeline and then inserted into the fixing buckle 21, and the pipeline fixing woven belt 20 is fixed through the buckle.
The working principle of the specific embodiment is as follows: when the device is applied to laying of ultra-long pipelines, a plurality of pairs of pipeline laying auxiliary devices are required to be synchronously matched; firstly, pushing a pipeline for municipal construction to the upper end of a feeding shovel frame 4, carrying an overlong pipeline to the upper surface of a horizontal translation bracket 1 by virtue of force of a feeding lever 5, and conveying the overlong pipeline inwards under the rolling cooperation of supporting rollers 2 to be finally clamped on a pipeline lifting frame 18 at the upper end of a pipeline slow-descending vehicle 9; when the pipeline slowly-descending operation is carried out, a plurality of high-power double-head driving motors 15 are synchronously started to drive the eccentric jacking wheels 16 to rotate, the tail parts of the pipeline slowly-descending vehicles 9 are jacked upwards, and the extending clamping columns 17 outside the axes of the eccentric jacking wheels 16 are separated from the clamping tooth grooves of the previous section and fall into the clamping tooth grooves of the next section; the pipeline slow descending vehicle 9 is made to descend layer by layer along the slow descending track 7 through the continuous jacking of the eccentric jacking wheels 16, so that the ultra-long pipeline descends to the bottom of the slow descending track 7; when the extension clamping columns 17 correspond to the open grooves 12, the extension clamping columns 17 can be separated from the slow descending rails 7 to realize the overturning of the pipeline slow descending vehicle 9, so that the overlong pipeline is overturned into the pit groove.
After adopting above-mentioned structure, this embodiment beneficial effect does: it adopts the cooperation of slowly falling track and pipeline fixing car, realizes that the slow gliding of pipeline guarantees that the pipeline can be safe carry the construction pot hole inside, in addition, has super high-efficient auxiliary action when using overlength pipe laying, avoids the problem of traditional crane hoist and mount difficulty.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. The utility model provides a pipeline laying device is used in road construction for municipal construction which characterized in that: the device comprises a horizontal translation support (1), a supporting roller (2), a rotary connecting shaft (3), a feeding shovel frame (4), a feeding lever (5), a rotary adjusting shaft (6), a slow descending track (7), a supporting balance seat (8) and a pipeline slow descending vehicle (9); the upper end of the horizontal translation support (1) is provided with a plurality of supporting rollers (2), the right end of the horizontal translation support (1) is connected with a slow-descending track (7) through a rotary adjusting shaft (6), and the lower end of the slow-descending track (7) is fixed inside the pipeline laying groove through a supporting balance seat (8); wherein; the slow descending rail (7) is of a concave structure, sliding clamping grooves (10) are formed in two sides of the interior of the slow descending rail (7), and a pair of slow descending racks (11) are arranged in the interior of the slow descending rail (7); the pipeline slow-descending truck (9) is movably clamped inside the slow-descending track (7), a pipeline lifting frame (18) is arranged on the upper surface of the pipeline slow-descending truck (9), a pair of sliding rollers (13) are arranged on the right side of the lower end of the pipeline slow-descending truck (9), and the sliding rollers (13) are movably clamped inside the sliding clamping grooves (10) on the two sides of the slow-descending track (7); a pair of eccentric jacking wheels (16) is arranged on the left side of the lower end of the pipeline slow descending vehicle (9); an eccentric jacking wheel (16) is clamped between the two slow-descending racks (11), an extension clamping column (17) connected to the outer side of the axle center of the eccentric jacking wheel (16) is clamped on the slow-descending racks (11), and the top end of the extension clamping column (17) is inserted into the sliding clamping groove (10) to carry out jacking limiting; the two eccentric jacking wheels (16) are connected with a double-head driving motor (15) in the middle through a fixed bracket (14).
2. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the top of the lower end of the slow descending track (7) is provided with a pair of open grooves (12), and the open grooves (12) and the extension clamping columns (17) are kept corresponding to realize outward overturning and pipe unloading of the pipeline slow descending vehicle (9).
3. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: four groups of fixed seats (19) are arranged on the outer side of the horizontal translation bracket (1).
4. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the left end of the horizontal translation support (1) is connected with a feeding shovel frame (4) through a rotating connecting shaft (3), and the middle of the rotating connecting shaft (3) is connected with a feeding lever (5).
5. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the middle of the supporting roller (2) is provided with a lever caulking groove (20), and the lever caulking groove (20) is matched and clamped with the feeding lever (5).
6. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the inclination angle range of the slow descending track (7) is 30-60 degrees.
7. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the pipeline lifting frame (18) is perfectly attached to the outer edge of the pipeline to be laid.
8. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the horizontal translation support (1), the slow descending track (7) and the pipeline slow descending vehicle (9) form a pipeline laying equipment array which is matched to keep synchronous operation.
9. The pipe laying device for road construction for municipal construction according to claim 1, characterized in that: the pipeline lifting frame (18) is replaced by a pipeline fixing woven belt (20) and a fixing buckle (21); the pipeline fixing braided belt (20) is fixed on the right side of the upper surface of the pipeline slow descending vehicle (9); a fixing buckle (21) is inserted in the left side of the upper surface of the pipeline slow descending vehicle (9); the pipeline fixing woven belt (20) is wrapped on the surface of the pipeline and then inserted into the fixing buckle (21), and the pipeline fixing woven belt (20) is fixed through the buckle.
CN202011216435.1A 2020-11-04 2020-11-04 Pipeline laying device for road construction for municipal construction Pending CN112227500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011216435.1A CN112227500A (en) 2020-11-04 2020-11-04 Pipeline laying device for road construction for municipal construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011216435.1A CN112227500A (en) 2020-11-04 2020-11-04 Pipeline laying device for road construction for municipal construction

Publications (1)

Publication Number Publication Date
CN112227500A true CN112227500A (en) 2021-01-15

Family

ID=74121963

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011216435.1A Pending CN112227500A (en) 2020-11-04 2020-11-04 Pipeline laying device for road construction for municipal construction

Country Status (1)

Country Link
CN (1) CN112227500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113623459A (en) * 2021-09-16 2021-11-09 王宗慧 Municipal administration water supply and drainage pipeline construction equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113623459A (en) * 2021-09-16 2021-11-09 王宗慧 Municipal administration water supply and drainage pipeline construction equipment

Similar Documents

Publication Publication Date Title
CN110329903A (en) The hardware pipe fitting portal jib crane of changeable fixture
CN109231072A (en) A kind of rear axle of electric automobile general assembly lifting platform and assembly equipment
CN105819335B (en) The handling apparatus and development machine of development machine
CN106414169A (en) Floor-bound transport vehicle for containers, featuring a lifting function
CN107570907A (en) A kind of container aluminum T floors turn-over welder and method
CN112227500A (en) Pipeline laying device for road construction for municipal construction
CN213387553U (en) Multifunctional vehicle for centralized transportation, hoisting and installation
CN214169344U (en) Pipeline laying device for road construction for municipal construction
CN104444463A (en) Commercial vehicle loading and unloading engineering vehicle of special vehicle for wagon double-layer transporting cars
CN217650769U (en) Portal crane of automobile parts processing usefulness
CN112897364B (en) Tool trolley for hoisting GIL through pipe
CN106481126A (en) A kind of three-dimensional parking device realizing vehicle lifting by lifting cantilever
CN109704206A (en) A kind of high stable hoisting apparatus
CN202573940U (en) Truck for transporting ultra-long member
CN209097761U (en) A kind of transport stacking machine that textile industry uses
CN210650667U (en) Movable mechanical arm
CN204184965U (en) The Commercial Vehicle handling engineering truck of railway truck double-layered transport vehicles special vehicle
CN115231455A (en) Mechanical suspension device for building material manufacturing
CN211768411U (en) Feeding trolley feeding structure capable of rotating by 90 degrees
CN110216404B (en) Medical instrument welding device with good welding effect
CN206588507U (en) It is a kind of to dock the device being welded for large tank
CN111533044A (en) Loading and unloading unit, loading and unloading device and loading and unloading method for extra-large equipment
CN220449165U (en) A transport wooden handcart for storage tank processing
CN2615087Y (en) Up-down conveyor
CN209871800U (en) Movable material hoister

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
CB02 Change of applicant information

Address after: 430000, No. 18, Jiahe Road, Hanyang District, Wuhan City, Hubei Province

Applicant after: Wuhan Zhongxin Construction Group Co.,Ltd.

Applicant after: Wuhan Hanyang Municipal Construction Group Co.,Ltd.

Address before: 430000, No. 18, Jiahe Road, Hanyang District, Wuhan City, Hubei Province

Applicant before: WUHAN ZHONGXIN MUNICIPAL CONSTRUCTION CO.,LTD.

Applicant before: Wuhan Hanyang Municipal Construction Group Co.,Ltd.

CB02 Change of applicant information