CN102691313A - Immersed tube bottom capsule water filling fine adjusting system and adjusting technology - Google Patents
Immersed tube bottom capsule water filling fine adjusting system and adjusting technology Download PDFInfo
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- CN102691313A CN102691313A CN2012101871246A CN201210187124A CN102691313A CN 102691313 A CN102691313 A CN 102691313A CN 2012101871246 A CN2012101871246 A CN 2012101871246A CN 201210187124 A CN201210187124 A CN 201210187124A CN 102691313 A CN102691313 A CN 102691313A
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Abstract
The invention relates to an immersed tube bottom capsule water filling fine adjusting system and an adjusting technology. The system comprises a control system and a mechanical system, wherein the mechanical system comprises a hydraulic pump station, weight boxes and tracks; a horizontal positioning mechanism is arranged on each track, each horizontal positioning mechanism comprises a bottom plate and a horizontal positioning jack, and one end of each horizontal positioning jack is connected with a weight box; a chute and a horizontal transverse moving jack are arranged on each bottom plate, a jacking deviation correcting box is placed in each chute, a vertical jacking mechanism is arranged in each jacking deviation correcting box, and one end of each horizontal transverse moving jack is connected with the jacking deviation correcting box; and each vertical jacking mechanism comprises a water filling capsule and a jacking cover plate placed on the upper part of the water filling capsule, wherein each water filling capsule is placed in a jacking deviation correcting box. By using the water filling capsules as jacking elements, the fine adjusting system is light in weight and uniform in stress, has an automatic jacking deviation correcting function, is low in manufacturing cost, convenient to place in position, time-saving, labor-saving and accurate in installation precision, is affected little by natural conditions such as wave, water flow and wind, and is high in stability.
Description
Technical field
The present invention relates to the immersed tube tunnel construction technology, specifically, relates to immersed tube correction bottom regulating system and adjusting technology thereof in a kind of immersed tube tunnel work progress.
Background technology
Immersed tunnelling method is a kind of job practices in the building tunnel at the bottom.Immersed tube tunnel be exactly with several prefabricated section respectively transportation by driving to the sea (river surface) scene, and sink to put one by one and be installed in the foundation trench of having dredged, the submerged tunnel of building with the method.At present, in the immersed tube tunnel work progress, in order to improve the planarization of trench bottom surfaces, the subaqueous tunnel that the overwhelming majority builds up all adopts the method for leveling up.Wherein, The early stage method of leveling up that adopts mostly be a kind of pipeline section is heavy put before first sanding masonry be the first shop method of bed course; It is through hoist engine and the special shop machine of scraping or the steel plough of cable control on operation ship; Guide rail that be provided with, that have the regulation absolute altitude and the gradient is back and forth wipeed the bedding and padding that put down off along the trench bottom surfaces both sides, and this method shortcoming is more; The method that another kind is leveled up is filled out method after being; Promptly elder generation sinks pipeline section and is placed on the temporary support on the trench bottom, and (preset hydraulic jack can be pushed up to bearing when locating in the pipeline section base plate to make the pipe end form certain space; Regulate the pipeline section elevation), use the course filling closely knit subsequently.In above-mentioned two kinds of methods; Handling heavy purpose of putting the pipeline section basis is to make trench bottom surfaces smooth, rather than in order to improve the bearing capacity of ground, the groove that excavates under water; Its bottom surface is uneven; As do not flatten, pipeline section is heavy can to cause local failure because of the ground discontinuity after putting, or ftractures because of differential settlement.
The essential condition that is suitable for the immersed tunnelling method construction is: water channel stabilization of river bed and current are not too urgent.Big in the depth of water, when the immersed tube aspect ratio is big; Need obviously to increase the jack configuration; Usually adopt heavy putting to refute auxiliary providing to the power of hanging oneself reducing immersed tube to bedding frictional force, through heavy put refute auxiliary install wave height is required relatively stricter, general job wave height requirement≤0.4m.At present, adopt the heavy case of refuting auxiliary installation of putting to have only Pusan-huge Ji immersed tube tunnel and Oresund immersed tube tunnel, wherein, Pusan-huge Ji immersed tube tunnel is to operation wave height requirement≤0.4m; In the immersed tube tunnel construction of Oresund, can find out that from map formed shielding around the job site, sea situation is better.And when requiring greater than 0.4m,, adopt heavy putting when refuting auxiliary the installation owing to receive the influence of natural conditions such as wave, current, wind for wave height; The power amplitude of variation of hanging is very big, and bigger to the installation and control influence, jack thrust is big; The control difficulty; And installation accuracy is inaccurate, needs the time to adjust, and wastes time and energy.
Summary of the invention
The present invention is directed to and have the problems referred to above such as the thrust that existed by effect of natural conditions such as wave, current, wind when immersed tube is installed in the immersed tube tunnel work progress is big, control is difficult, waste time and energy now; A kind of immersed tube bottom capsule Water accurate adjustment system is provided and has regulated technology; This system is positioned at immersed tube afterbody to be installed bottom when using; Function with autonomous rectifying by jack up, the immersed tube correction when being applicable to the immersed tube tunnel construction.
Technical scheme of the present invention is: a kind of immersed tube bottom capsule Water accurate adjustment system; This system comprises control system and mechanical system; Mechanical system comprises hydraulic power unit, ballast box and is installed in the track of ballast box one side; Track be provided with can be Orbiting horizontal location mechanism, this horizontal location mechanism comprises the base plate that is installed in orbit and is installed in the horizontal location jack on the base plate that one end of horizontal location jack is connected with ballast box; The traversing jack of chute and level is installed on the base plate, is placed with the rectifying by jack up case in the chute, be provided with vertical lifting body in this rectifying by jack up case, traversing jack one end of level is fixed on the base plate, and the other end is connected with the rectifying by jack up case; Vertical lifting body comprises water-filled capsule and the jacking cover plate that is placed on water-filled capsule top, and water-filled capsule is placed in the rectifying by jack up case.
Preferably, the traversing jack of level is provided with two, and two traversing jack of level are separately positioned on the two ends of rectifying by jack up case, and the traversing jack homogeneous of each level end is fixed on the jacking base that is arranged on the base plate, and an end is connected with the rectifying by jack up case.
Preferably, the two ends of water-filled capsule are provided with and strengthen the angle.
Preferably, the both sides of base plate all are equipped with buoyancy tank.
Preferably, the top of jacking cover plate is inlaid with rubber tile.
Another object of the present invention is to provide a kind of immersed tube bottom correction technology, adopt immersed tube bottom capsule Water accurate adjustment system to rectify a deviation, its correction processing step is:
(1) basis requires: the hydraulic power unit of immersed tube bottom capsule Water accurate adjustment system and control system all are positioned on the diving crane ship; This system mechanics system-based need be with immersed tube afterbody rubble to be installed basis than the low 70cm of base bed flattening absolute altitude; Axial length is 5m; It is 56cm that the mechanical system of immersed tube bottom capsule Water accurate adjustment system gets into immersed tube bottom part height, and it is in place to be convenient to mechanical system.
(2) axis repetition measurement: after the crimping of immersed tube waterpower is accomplished, open the steel measured hole of sealing up a door and carry out holing through survey.
(3) heavyly put, in place: heavy the putting through suspension bracket of mechanical system of immersed tube bottom capsule Water correction accurate adjustment system fixed, suspension bracket length 25m, heavy set level can contact with the passage abutment wall when moving spacing; During heavy putting; Through being installed in the distance between measuring instrument on the mechanical system is measured and steel is sealed up a door; When apart from 2m place, immersed tube end implantation; And then sling apart from bedding 1m, the mechanical system that spurs immersed tube bottom capsule Water correction accurate adjustment system through the wire rope that is preset in the immersed tube end is adjacent to the immersed tube end, and then falls implantation; Utilize the horizontal location jack pushing tow base plate of the mechanical system self of immersed tube bottom capsule Water accurate adjustment system, it is in place that the rectifying by jack up case is pushed immersed tube to be installed bottom.
(4) immersed tube jacking: to the water-filled capsule water-filling; The jacking cover plate is raised in the water-filled capsule jacking; Eliminate the gap of jacking cover plate and immersed tube to be installed, the top of jacking cover plate is closely contacted with the bottom of immersed tube to be installed, and continue water-filled capsule is carried out water-filling; The jacking cover plate is lifted to specified altitude assignment with immersed tube to be installed, keeps hydraulic pressure.
(5) immersed tube correction: start two traversing jack of level simultaneously, the correction of pushing tow rectifying by jack up case realizes the operation of immersed tube bidirectional deviation correction.
(6) monitoring in real time: the operating period of rectifying a deviation utilizes total powerstation to pass through measured hole observation immersed tube tail end correction situation and tail end top lifting height.
(7) equipment shifts out: after correction puts in place; The traversing jack of locking level, slow pressure release water-filled capsule pressure, immersed tube decline implantation; Start the horizontal location jack rectifying by jack up case is pulled out the immersed tube bottom; Accomplish the immersed tube correction at this moment, the mechanical system of immersed tube bottom capsule Water accurate adjustment system withdraws from the immersed tube bottom, utilizes crane gear that the mechanical system of immersed tube bottom capsule Water accurate adjustment system is winched to assigned address.
Preferably, in the step (3), heavy putting when in place; The rectifying by jack up case state that mediates; Before jacking, through the traversing jack of level the rectifying by jack up case is pushed to an end of correction, the traversing jack correction of maintenance level amount can repeat above-mentioned steps between 10-20cm.
The invention has the beneficial effects as follows: capsule Water correction accurate adjustment system architecture advantages of simple of the present invention, safe and reliable, adopt water-filled capsule as the jacking element, in light weight, stressed even, even to bedding pressure; Adopt horizontal pushing tow jack in place, through the capsule water-filling being realized the jacking to immersed tube to be installed, and realize the deviation-correcting function of immersed tube to be installed through the traversing jack of level, cost is low, is convenient in place; Capsule Water of the present invention correction accurate adjustment system is provided with the control system, and whole process is accomplished automatically, and is easy to operate, time saving and energy saving, and installation accuracy is accurate, receives effect of natural conditions such as wave, current, wind little; After correction is accomplished, can directly unload and carve body formula correction accurate adjustment system, stability is high.
Description of drawings
Accompanying drawing 1 is put the original state side structure sketch map when in place for specific embodiment of the invention mechanical system is heavy.
Status architecture sketch map when accompanying drawing 2 is the correction of specific embodiment of the invention mechanical system jacking immersed tube.
Accompanying drawing 3 is put the original state plane structure sketch map when in place for specific embodiment of the invention mechanical system is heavy.
Accompanying drawing 4 is the status architecture sketch map when in place for the heavy caving of specific embodiment of the invention mechanical system pushes away.
Accompanying drawing 5-8 is a practical implementation rectifying by jack up process sketch map of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
A kind of immersed tube bottom capsule Water accurate adjustment system; This system comprises control system and mechanical system; Mechanical system comprises hydraulic power unit, ballast box 1 and is installed in the track 2 of ballast box 1 one sides; Track 2 is provided with can be along the horizontal location mechanism of track 2 operation, this horizontal location mechanism comprise be installed in the base plate on the track 23 be installed in the horizontal location jack 4 on the base plate 3, an end of horizontal location jack 4 is connected with ballast box 1; The both sides of base plate 3 all are equipped with buoyancy tank 11, are used to reduce the weight under water of system, are convenient in place.The traversing jack 5 of chute and level is installed on the base plate 3; Be placed with rectifying by jack up case 6 in the chute; Be provided with vertical lifting body in this rectifying by jack up case 6, the traversing jack 5 of level is provided with two, and two traversing jack 5 of level are separately positioned on the two ends of rectifying by jack up case 6; The traversing jack 5 homogeneous ends of each level are fixed on the jacking base 7 that is arranged on the base plate 3, and an end is connected with rectifying by jack up case 6.Vertical lifting body comprises water-filled capsule 8 that is placed in the rectifying by jack up case 6 and the jacking cover plate 9 that is placed on water-filled capsule 8 tops; The two ends of water-filled capsule 8 are provided with strengthens angle 10; The top of jacking cover plate 9 is inlaid with rubber tile, is used to increase the friction factor of top blind flange 9 bottom immersed tube to be installed.
Its correction processing step is following:
(1) basis requires: the hydraulic power unit of immersed tube bottom capsule Water accurate adjustment system and control system all are positioned on the diving crane ship; This system mechanics system-based need be with immersed tube afterbody rubble to be installed basis than the low 70cm of base bed flattening absolute altitude; Axial length is 5m; It is 56cm that the mechanical system of immersed tube bottom capsule Water accurate adjustment system gets into immersed tube bottom part height, and it is in place to be convenient to mechanical system.
(2) axis repetition measurement: after the crimping of immersed tube waterpower is accomplished, open the steel measured hole of sealing up a door and carry out holing through survey.
(3) heavyly put, in place: heavy the putting through suspension bracket of mechanical system of immersed tube bottom capsule Water correction accurate adjustment system fixed, suspension bracket length 25m, heavy set level can contact with the passage abutment wall when moving spacing; During heavy putting; Through being installed in the distance between measuring instrument on the mechanical system is measured and steel is sealed up a door; When apart from 2m place, immersed tube end implantation; And then sling apart from bedding 1m, the mechanical system that spurs immersed tube bottom capsule Water correction accurate adjustment system through the wire rope that is preset in the immersed tube end is adjacent to the immersed tube end, and then falls implantation; Utilize the horizontal location jack pushing tow base plate of the mechanical system self of immersed tube bottom capsule Water accurate adjustment system, it is in place that the rectifying by jack up case is pushed immersed tube to be installed bottom; Heavy putting when in place, the rectifying by jack up case state that mediates is pushed to an end of correction through the traversing jack of level with the rectifying by jack up case before jacking, the traversing jack correction of maintenance level amount can repeat above-mentioned steps between 10-20cm.
(4) immersed tube jacking: to the water-filled capsule water-filling; The jacking cover plate is raised in the water-filled capsule jacking; Eliminate the gap of jacking cover plate and immersed tube to be installed, the top of jacking cover plate is closely contacted with the bottom of immersed tube to be installed, and continue water-filled capsule is carried out water-filling; The jacking cover plate is lifted to specified altitude assignment with immersed tube to be installed, keeps hydraulic pressure.
(5) immersed tube correction: start two traversing jack of level simultaneously, the correction of pushing tow rectifying by jack up case realizes the operation of immersed tube bidirectional deviation correction.
(6) monitoring in real time: the operating period of rectifying a deviation utilizes total powerstation to pass through measured hole observation immersed tube tail end correction situation and tail end top lifting height.
(7) equipment shifts out: after correction puts in place; The traversing jack of locking level, slow pressure release water-filled capsule pressure, immersed tube decline implantation; Start the horizontal location jack rectifying by jack up case is pulled out the immersed tube bottom; Accomplish the immersed tube correction at this moment, the mechanical system of immersed tube bottom capsule Water accurate adjustment system withdraws from the immersed tube bottom, utilizes crane gear that the mechanical system of immersed tube bottom capsule Water accurate adjustment system is winched to assigned address.
Above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although the present invention is specified with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. immersed tube bottom capsule Water correction accurate adjustment system; It is characterized in that: this system comprises control system and mechanical system; Mechanical system comprises hydraulic power unit, ballast box and is installed in the track of ballast box one side; Track be provided with can be Orbiting horizontal location mechanism, this horizontal location mechanism comprises the base plate that is installed in orbit and is installed in the horizontal location jack on the base plate that one end of horizontal location jack is connected with ballast box; The traversing jack of chute and level is installed on the base plate, is placed with the rectifying by jack up case in the chute, be provided with vertical lifting body in this rectifying by jack up case, traversing jack one end of level is fixed on the base plate, and the other end is connected with the rectifying by jack up case; Vertical lifting body comprises water-filled capsule and the jacking cover plate that is placed on water-filled capsule top, and water-filled capsule is placed in the rectifying by jack up case.
2. immersed tube as claimed in claim 1 bottom capsule Water accurate adjustment system; It is characterized in that: the traversing jack of level is provided with two; Two traversing jack of level are separately positioned on the two ends of rectifying by jack up case; The traversing jack homogeneous of each level end is fixed on the jacking base that is arranged on the base plate, and an end is connected with the rectifying by jack up case.
3. immersed tube as claimed in claim 1 bottom capsule Water accurate adjustment system is characterized in that: the two ends of water-filled capsule are provided with strengthens the angle.
4. immersed tube as claimed in claim 1 bottom capsule Water accurate adjustment system, it is characterized in that: the both sides of base plate all are equipped with buoyancy tank.
5. like any described immersed tube bottom capsule Water accurate adjustment system of claim 1 to 4, it is characterized in that: the top of jacking cover plate is inlaid with rubber tile.
6. immersed tube bottom correction technology is characterized in that: adopt immersed tube bottom capsule Water accurate adjustment system to rectify a deviation, its correction processing step is:
(1) basis requires: the hydraulic power unit of immersed tube bottom capsule Water accurate adjustment system and control system all are positioned on the diving crane ship; This system mechanics system-based need be with immersed tube afterbody rubble to be installed basis than the low 70cm of base bed flattening absolute altitude; Axial length is 5m; It is 56cm that the mechanical system of immersed tube bottom capsule Water accurate adjustment system gets into immersed tube bottom part height, and it is in place to be convenient to mechanical system;
(2) axis repetition measurement: after the crimping of immersed tube waterpower is accomplished, open the steel measured hole of sealing up a door and carry out holing through survey;
(3) heavyly put, in place: heavy the putting through suspension bracket of mechanical system of immersed tube bottom capsule Water correction accurate adjustment system fixed, suspension bracket length 25m, heavy set level can contact with the passage abutment wall when moving spacing; During heavy putting; Through being installed in the distance between measuring instrument on the mechanical system is measured and steel is sealed up a door; When apart from 2m place, immersed tube end implantation; And then sling apart from bedding 1m, the mechanical system that spurs immersed tube bottom capsule Water correction accurate adjustment system through the wire rope that is preset in the immersed tube end is adjacent to the immersed tube end, and then falls implantation; Utilize the horizontal location jack pushing tow base plate of the mechanical system self of immersed tube bottom capsule Water accurate adjustment system, it is in place that the rectifying by jack up case is pushed immersed tube to be installed bottom;
(4) immersed tube jacking: to the water-filled capsule water-filling; The jacking cover plate is raised in the water-filled capsule jacking; Eliminate the gap of jacking cover plate and immersed tube to be installed, the top of jacking cover plate is closely contacted with the bottom of immersed tube to be installed, and continue water-filled capsule is carried out water-filling; The jacking cover plate is lifted to specified altitude assignment with immersed tube to be installed, keeps hydraulic pressure;
(5) immersed tube correction: start two traversing jack of level simultaneously, the correction of pushing tow rectifying by jack up case realizes the operation of immersed tube bidirectional deviation correction;
(6) monitoring in real time: the operating period of rectifying a deviation utilizes total powerstation to pass through measured hole observation immersed tube tail end correction situation and tail end top lifting height;
(7) equipment shifts out: after correction puts in place; The traversing jack of locking level, slow pressure release water-filled capsule pressure, immersed tube decline implantation; Start the horizontal location jack rectifying by jack up case is pulled out the immersed tube bottom; Accomplish the immersed tube correction at this moment, the mechanical system of immersed tube bottom capsule Water accurate adjustment system withdraws from the immersed tube bottom, utilizes crane gear that the mechanical system of immersed tube bottom capsule Water accurate adjustment system is winched to assigned address.
7. immersed tube as claimed in claim 6 bottom correction technology; It is characterized in that: in the step (3); Heavy putting when in place, the rectifying by jack up case state that mediates is pushed to the rectifying by jack up case through the traversing jack of level one end of correction before jacking; The traversing jack correction of maintenance level amount can repeat above-mentioned steps between 10-20cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187124.6A CN102691313B (en) | 2012-05-29 | 2012-05-29 | Immersed tube bottom capsule water filling fine adjusting system and adjusting technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187124.6A CN102691313B (en) | 2012-05-29 | 2012-05-29 | Immersed tube bottom capsule water filling fine adjusting system and adjusting technology |
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| Publication Number | Publication Date |
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| CN102691313A true CN102691313A (en) | 2012-09-26 |
| CN102691313B CN102691313B (en) | 2015-04-15 |
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| CN201210187124.6A Active CN102691313B (en) | 2012-05-29 | 2012-05-29 | Immersed tube bottom capsule water filling fine adjusting system and adjusting technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395398A (en) * | 2020-03-20 | 2020-07-10 | 华侨大学 | Immersed tube structure suitable for high flow velocity and construction method thereof |
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| CN1129272A (en) * | 1995-02-17 | 1996-08-21 | 大栋营造股份有限公司 | Jack propelling method for under water working of coffer |
| JP2003049441A (en) * | 2001-08-03 | 2003-02-21 | Toyo Constr Co Ltd | Direction correcting device and method for submerged caisson |
| CN101508410A (en) * | 2009-03-09 | 2009-08-19 | 钟爱民 | Large-scale component jacking method |
| CN101696575A (en) * | 2009-11-13 | 2010-04-21 | 中交一航局第二工程有限公司 | Method for lifting shipping caisson by capsule trolley |
| CN202913427U (en) * | 2012-05-29 | 2013-05-01 | 中交一航局第二工程有限公司 | Immersed tube bottom end capsule water-filling type accurate adjustment system |
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2012
- 2012-05-29 CN CN201210187124.6A patent/CN102691313B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129272A (en) * | 1995-02-17 | 1996-08-21 | 大栋营造股份有限公司 | Jack propelling method for under water working of coffer |
| JP2003049441A (en) * | 2001-08-03 | 2003-02-21 | Toyo Constr Co Ltd | Direction correcting device and method for submerged caisson |
| CN101508410A (en) * | 2009-03-09 | 2009-08-19 | 钟爱民 | Large-scale component jacking method |
| CN101696575A (en) * | 2009-11-13 | 2010-04-21 | 中交一航局第二工程有限公司 | Method for lifting shipping caisson by capsule trolley |
| CN202913427U (en) * | 2012-05-29 | 2013-05-01 | 中交一航局第二工程有限公司 | Immersed tube bottom end capsule water-filling type accurate adjustment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395398A (en) * | 2020-03-20 | 2020-07-10 | 华侨大学 | Immersed tube structure suitable for high flow velocity and construction method thereof |
| CN111395398B (en) * | 2020-03-20 | 2021-12-10 | 华侨大学 | Immersed tube structure suitable for high flow velocity and construction method thereof |
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| CN102691313B (en) | 2015-04-15 |
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Inventor after: Qu Lili Inventor after: Lin Ming Inventor after: Feng Haibao Inventor after: Li Zengjun Inventor after: Fu Dawei Inventor before: Qu Lili Inventor before: Feng Haibao Inventor before: Fu Dawei |
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Free format text: CORRECT: INVENTOR; FROM: QU LILI FENG HAIBAO FU DAWEI TO: QU LILI LIN MING FENG HAIBAO LI ZENGJUN FU DAWEI |
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Effective date of registration: 20121019 Address after: 266071 Shandong city of Qingdao province Fuzhou City Road No. 16 building in Hong Kong Applicant after: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. Applicant after: ENGINEERING COMPANY LTD. OF CCCC FIRST HARBOR ENGINEERING CO.,LTD. Address before: 266071 Shandong city of Qingdao province Fuzhou City Road No. 16 building in Hong Kong Applicant before: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. |
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Address after: 266071 Shandong city of Qingdao province Fuzhou City Road No. 16 building in Hong Kong Patentee after: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. Patentee after: CCCC First Harbor Engineering Co., Ltd. Address before: 266071 Shandong city of Qingdao province Fuzhou City Road No. 16 building in Hong Kong Patentee before: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. Patentee before: ENGINEERING COMPANY LTD. OF CCCC FIRST HARBOR ENGINEERING CO.,LTD. |