CN217053072U - Multifunctional steel cable tower cap and stay cable installation device - Google Patents

Multifunctional steel cable tower cap and stay cable installation device Download PDF

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Publication number
CN217053072U
CN217053072U CN202220691870.8U CN202220691870U CN217053072U CN 217053072 U CN217053072 U CN 217053072U CN 202220691870 U CN202220691870 U CN 202220691870U CN 217053072 U CN217053072 U CN 217053072U
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China
Prior art keywords
cable
tower
wire rope
installation device
steel wire
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CN202220691870.8U
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Chinese (zh)
Inventor
艾碧霖
支荣
李云友
邓永锋
李璘琳
王梓宇
陈名峰
王翔
齐玉超
赵志强
王鹏
江海明
刘浩
孙国圣
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Guangdong Guangzhu Intercity Rail Transit Co ltd
China Railway Major Bridge Engineering Group Co Ltd MBEC
China State Railway Group Co Ltd
Original Assignee
China Railway Major Bridge Engineering Group Co Ltd MBEC
China Railway Bridge Science Research Institute Ltd
5th Engineering Co Ltd of MBEC
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Application filed by China Railway Major Bridge Engineering Group Co Ltd MBEC, China Railway Bridge Science Research Institute Ltd, 5th Engineering Co Ltd of MBEC filed Critical China Railway Major Bridge Engineering Group Co Ltd MBEC
Priority to CN202220691870.8U priority Critical patent/CN217053072U/en
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Abstract

The utility model relates to a multi-functional steel cable tower cap and suspension cable installation device, it includes: a cable tower; the hanger is fixed at the upper end of the cable tower and is provided with a pulley; the first winch traction system is arranged on the side span side of the cable tower and is provided with a first steel wire rope; and the second winch traction system is arranged at the midspan side of the cable tower and is provided with a second steel wire rope, the second steel wire rope is connected with a traction cable, and the traction cable bypasses the pulley and is connected with the first steel wire rope. The embodiment of the utility model provides a multi-functional steel cable tower cap and suspension cable installation device sets up hoist traction system through the both sides at the cable tower, sets up the gallows that has the pulley at cable tower top, utilizes hoist traction system to drive the haulage cable and removes along the pulley, makes the suspension cable end rise and reachs cable tower fixed position to make the suspension cable can reach higher height.

Description

Multifunctional steel cable tower cap and stay cable installation device
Technical Field
The utility model relates to a bridge construction technical field, in particular to multi-functional steel cable tower cap and suspension cable installation device.
Background
The cable-stayed bridge is one of main bridge types of a large-span bridge and mainly comprises three parts, namely a cable tower, a main beam and a stay cable, wherein the stay cable converts vertical loads of the bridge deck and the main beam into upward tensile force and transmits the upward tensile force to the cable tower through the stay cable, and the cable tower transmits the load to a foundation. Common cable towers have a concrete structure, a steel-concrete composite structure or a steel structure. With the development of materials, technologies and equipment, more cable-stayed bridges adopt steel towers or steel-concrete combined towers, and the design limitation of the appearance of the cable tower is reduced to a greater extent on the premise of ensuring the structural safety. Meanwhile, the span of the cable-stayed bridge is continuously increased, which means that the length and the diameter of the stay cable are designed to be longer and larger, and greater challenges are brought to the construction of the suspension cable.
In the related art, the tower end suspension cable of the stay cable is suspended by using equipment such as a truck crane or a tower crane beside the tower, but when the height of the cable tower is too high, a truck crane with a larger tonnage is required, even the hoisting height still cannot meet the requirement, or when the cable tower is limited by surrounding conditions, the tower crane cannot be erected.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a multi-functional steel cable tower cap and suspension cable installation device to hoist and mount highly can not reach the requirement when solving among the correlation technique cable tower height and too high, or can't erect the problem of tower crane because of the condition restriction.
First aspect provides a multi-functional steel cable tower cap and suspension cable installation device, and it includes: a cable tower; the hanging bracket is fixed at the upper end of the cable tower, and a pulley is installed on the hanging bracket; the first winch traction system is arranged on the side span side of the cable tower and is provided with a first steel wire rope; and the second winch traction system is arranged at the midspan side of the cable tower and is provided with a second steel wire rope, the second steel wire rope is connected with a traction cable, and the traction cable bypasses the pulley and is connected with the first steel wire rope.
In some embodiments, the hanger comprises: at least two upright posts which are respectively fixed on two sides of the cable tower; the supporting beam is fixed between the two upright columns; the longitudinal beam is fixed on the supporting beam, the longitudinal beam extends along the bridge direction, the number of the pulleys is at least two, and the two pulleys are respectively installed at two ends of the longitudinal beam.
In some embodiments, a limiting member is installed at the upper end of the cable tower, the column penetrates through the limiting member, and the column can move along the axis direction of the column and is fixed to the limiting member through a pin shaft.
In some embodiments, the upright column is provided with a counterforce seat, and the top of the cable tower is provided with a jack which is supported at the bottom of the counterforce seat.
In some embodiments, a coupling system is fixed between the two columns, and the coupling system is in an X shape.
In some embodiments, an electric hoist is mounted on the longitudinal beam, a tower cap is mounted at the top of the cable tower, and the electric hoist is connected with the tower cap.
In some embodiments, the upright is located on the outer side of the tower cap, a fixing block is arranged on the upright, and the fixing block is fixed with the tower cap.
In some embodiments, the first steel wire rope and the second steel wire rope are wound on a pulley block, and two ends of the traction rope are connected with the pulley block.
In some embodiments, an anchoring wire rope is fixed on the tackle pulley, and the anchoring wire rope is anchored on the ground.
In some embodiments, a puller is mounted on the traction cable, and the puller is used for being connected with the stayed cable.
The utility model provides a beneficial effect that technical scheme brought includes:
the embodiment of the utility model provides a multi-functional steel cable tower cap and suspension cable installation device sets up hoist traction system through the both sides at the cable tower, sets up the gallows that has the pulley at cable tower top, utilizes hoist traction system to drive the haulage cable and removes along the pulley, makes the suspension cable end rise and reachs cable tower fixed position to make the suspension cable can reach higher height, and not restricted by surrounding conditions.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.
Fig. 1 is a schematic view of an overall structure of a multifunctional steel cable tower cap and a stay cable installation device according to an embodiment of the present invention;
fig. 2 is a schematic view of a linear structure of a multifunctional steel cable tower cap and a stay cable installation device provided by an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a hanger of a multifunctional steel cable tower cap and a stay cable installation device provided in an embodiment of the present invention;
fig. 4 is a schematic view of an overall structure of a multifunctional steel cable tower cap and a hanger of a stay cable installation device provided by an embodiment of the present invention;
fig. 5 is a schematic top view of a multifunctional steel cable tower cap and a hanging bracket of a stay cable installation device provided in an embodiment of the present invention;
fig. 6 is a schematic view of an operating state of a multifunctional steel cable tower cap and a hanger of a stay cable installation device provided by an embodiment of the present invention;
fig. 7 is a schematic diagram of a pre-assembled state of a tower cap of a multifunctional steel cable tower cap and a stay cable installation device provided by the embodiment of the present invention.
The reference numbers in the figures:
1. a cable tower; 3. a first winch traction system; 31. a first wire rope; 4. a second hoist traction system; 41. a second wire rope; 5. a hanger; 51. a column; 52. a support beam; 53. a longitudinal beam; 54. a linking system; 55. a limiting member; 56. a counterforce seat; 57. a fixed block; 6. a pulley; 7. a traction rope; 8. an electric hoist; 9. a tower cap; 91. segmenting into one; 92. segmenting into two; 93. segmenting into three; 94. segmenting into four segments; 10. a tackle pulley set; 11. anchoring the steel wire rope; 12. a puller; 13. a stay cable; 14. a jack; 15. temporary code plates; 16. an upper section; 17. a lower section.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a multi-functional steel cable tower cap and suspension cable installation device, it can solve among the correlation technique hoist and mount height when the cable tower height is too high and can not reach the requirement, or because of the unable problem of erectting the tower crane of condition restriction.
Referring to fig. 1 and fig. 2, for the utility model discloses a multi-functional steel cable tower cap and suspension cable installation device that embodiment provided, it can include: a cable tower 1; the hanger 5 is fixed at the upper end of the cable tower 1, and a pulley 6 is installed on the hanger 5; the first winch traction system 3 is arranged on the side span side of the cable tower 1, and the first winch traction system 3 is provided with a first steel wire rope 31; and the second winch traction system 4 is arranged on the midspan side of the cable tower 1, the second winch traction system 4 is provided with a second steel wire rope 41, the second steel wire rope 41 is connected with the traction cable 7, and the traction cable 7 is connected with the first steel wire rope 31 by bypassing the pulley 6.
In this embodiment, the installation method of the traction system is as follows:
(1) 1 winch with proper tonnage is respectively arranged at the side span and the midspan of the steel beam;
(2) a constructor adopts a hemp rope at the tower top to pull the first steel wire rope 31 to the tower top from the side span side, passes through the pulley 6 at the side span side of the tower top hanging bracket, and then is lowered to the beam surface from the pulley 6 at the side span side;
(3) connecting the first steel wire rope 31 with the second steel wire rope 41, taking up the rope by the side-span side winch, simultaneously paying off the rope by the mid-span side winch, drawing the second steel wire rope 41 to the top of the tower, passing through the mid-span side pulley 6 of the tower top hanger, and then putting down the second steel wire rope to the beam surface from the side-span side pulley 6;
(4) arranging a traction cable 7 on a side span, connecting one end of the traction cable with a first winch traction system 3, connecting the other end of the traction cable with a second steel wire rope 41, drawing the traction cable to the top of the tower through a mid-span side winch, passing through a pulley 6, and then lowering the traction cable to the surface of the beam from the mid-span side;
(5) connecting a second winch traction system 4 with a traction rope 7;
(6) limiting steel bars are welded at the pulley 6 to prevent the traction cable 7 from jumping out of the groove;
(7) and after the hanging bracket 5 is installed, carrying out comprehensive inspection on the hanging bracket 5 and trying to hang.
Referring to fig. 3, 4 and 5, in some embodiments, the hanger 5 may include: at least two columns 51 fixed to both sides of the cable tower 1, respectively; a support beam 52 fixed between the two vertical columns 51, in this embodiment, the support beam 52; and a longitudinal beam 53 fixed to the support beam 52, wherein the longitudinal beam 53 extends in the bridge direction, and the number of the pulleys 6 is at least two, and the two pulleys 6 are respectively attached to both ends of the longitudinal beam 53.
In this embodiment, the number of the upright columns 51 is four, two of the upright columns 51 are a group and are respectively fixed on two sides of the cable tower 1 along the bridge direction, the positions of the upright columns 51 on the two sides are opposite to each other, the two upright columns 51 on each side are connected through one supporting beam 52, the two sides have two supporting beams 52, the longitudinal beam 53 is fixed above the two supporting beams 52, the upright columns 51, the supporting beams 52 and the longitudinal beam 53 form a stable frame body, and when the stay cable 13 is hoisted, the stability can be maintained. In addition, longeron 53 is provided with two, and two longerons 53 parallel interval set up, and pulley 6 is all installed at the both ends of two longerons 53, can carry out the hoist and mount of suspension cable 13 simultaneously, has improved the installation effectiveness.
Referring to fig. 3 and 4, further, a limiting member 55 may be installed at an upper end of the cable tower 1, the column 51 is inserted through the limiting member 55, and the column 51 may move along an axial direction thereof and be fixed to the limiting member 55 by a pin.
In this embodiment, the column 51 and the limiting member 55 are provided with a plurality of pin holes, and the column 51 can move in the limiting member 55 and then be fixed in the pin holes by inserting a pin shaft, so as to change the height of the hanger 5 and facilitate the construction of a hanging cable.
Referring to fig. 3, 4 and 6, preferably, a reaction force seat 56 may be installed on the upright 51, the jack 14 is installed on the top of the pylon 1, the jack 14 is supported on the bottom of the reaction force seat 56, and the jack 14 may jack up the reaction force seat 56, so as to change the height of the pylon 5.
Referring to fig. 4, preferably, a coupling system 54 may be fixed between two of the columns 51, the coupling system 54 is in an X shape, and the coupling system 54 may further increase the integrity of the columns 51, so as to improve the strength and stability of the hanger 5.
Specifically, the preparation steps before the construction of the hanging rope are as follows:
(1) when the steel tower is manufactured, the hanger 5 is fixed on the top of the cable tower 1;
(2) stacking the tower cap plates from top to bottom in sequence according to the sequence of a second segment 92, a first segment 91, a third segment 93 and a fourth segment 94, and then welding and fixing the tower cap plates with the cable tower 1 by using clamping plates to ensure firm fixation;
(3) after the steel tower is vertically rotated in place, jacks 14 and counter-force seats 56 are arranged at four vertex angles of the cable tower 1;
(4) slowly jacking the lifting frame 5 through the jack 14 and the counter-force seat 56, inserting a pin shaft for fixing once when the lifting height is a certain height by using a pin hole between the upright post 51 and the limiting piece 55, lifting after the lifting is finished, and repeating the steps;
(5) lifting the hanger 5 to a proper height, fixing, and installing a connecting system 54;
(6) the hoisting construction is carried out by utilizing the hoisting frame 5, the winches are placed on the beam surface, the number of the winches is two, two winches are respectively arranged on two sides of the main tower, and the winches bypass the tower top through the traction cable 7 to turn to form single circulation.
Referring to fig. 4, in some embodiments, an electric hoist 8 may be mounted on the longitudinal beam 53, a tower cap 9 is mounted at the top of the cable tower 1, and the electric hoist 8 is connected to the tower cap 9, in this embodiment, the electric hoist 8 may lift the tower cap 9 through a steel wire rope to assemble, so that the hanger 5 may not only hang a cable, but also mount the tower cap 9, and is high in functionality and high in economy.
The height of the upper part of the cable tower 1 is reserved at most 1.4 meters according to the requirement of the swivel height of the steel tower, the tower cap 9 is divided into four sections according to the total height of the tower top, wherein the four sections are a section I91, a section II 92, a section III 93 and a section IV 94 respectively, each section is in a step shape, so that the section I91 can be fixedly welded with the tower when leaving a factory, and the section II, the section III and the section IV are respectively fixed in the section I91 and mutually fixed.
Specifically, the tower cap 9 is installed by the following steps:
(1) after the construction of the stay cable is finished, the lifting frame 5 is continuously lifted by using the counter-force seat 56 and the jack 14;
(2) the lifting frame 5 is lifted to a preset height and then fixed to complete lifting of the tower frame;
(3) mounting a connecting system 54 on the column 51;
(4) an electric hoist 8 with proper hoisting weight is arranged on the longitudinal beam 53;
(5) the second subsection 92 is pulled out of the first subsection 91 by the hanging bracket 5 and is positioned and fixed with the first subsection 91;
(6) the third segment 93 is pulled out from the first segment 91 by using the hanger 5, and is positioned and fixed with the second segment 92;
(7) the segment four 94 is pulled out from the segment one 91 by the hanger 5 and is positioned and fixed with the segment three 93
(8) Cutting off the lifting lug to complete the installation of the tower cap 9;
(9) the hanger 5 is removed.
As shown in fig. 7, when adjacent segments are pulled out from the square hole, the four sides of the adjacent segments are collided and 17mm, and in order to ensure smooth pulling out, the four segments are pre-spliced according to theoretical dimensions during manufacturing. After pre-assembly, 500mm of assembly welding seams at the upper opening of the wall plate of the lower section 17 are reserved and are not welded temporarily, the inner side stiffening plate is used as a field patching plate, the size of the opening at the periphery of the upper end of the lower section 17 is enlarged by 22mm by utilizing the elastic deformation of a steel plate, a gap of 5mm is reserved between the opening and the periphery of the lower opening of the upper section 16, and four corners of the lower section 17 are fixed by temporary code plates 15. After the upper section 16 is pulled out of the lower section 17, the temporary code plate 15 is removed, and the lower section steel plate can be freely restored to the original size. In other embodiments, the size of the assembly weld, the size of the gate enlargement at the upper end of the lower section 17, and the size of the gap between the lower section 17 and the upper section 16 can be other data.
Referring to fig. 4, in some embodiments, the upright 51 is located outside the tower cap 9, a fixing block 57 may be disposed on the upright 51, the fixing block 57 is fixed to the tower cap 9, and after the upright 51 is adjusted to a proper position, the fixing block 57 may be fixed to the tower cap 9, so that the upright 51 and the tower cap 9 are more stable.
Referring to fig. 2, preferably, the first steel wire rope 31 and the second steel wire rope 41 may be wound around the tackle pulley 10, and both ends of the traction cable 7 are connected to the tackle pulley 10, in this embodiment, the main function of the first steel wire rope 31 and the second steel wire rope 41 is to adjust the position of the stay cable 13 during the hoisting process, and the traction force is not too large, so as to prevent the stay cable 13 from touching the steel tower.
Referring to fig. 2, preferably, an anchoring steel wire rope 11 is fixed on the tackle pulley 10, the anchoring steel wire rope 11 is anchored on the ground, so that the stability of the whole stayed-cable traction system can be maintained, before the cable crane is formally hoisted, the cable crane should be hoisted in a trial mode according to a crane hoisting test procedure, the sag of the cable crane span and the tower top deviation are monitored, and if the deviation is large, the adjustment should be performed in time.
Referring to fig. 2, preferably, a puller 12 may be installed on the guy cable 7, the puller 12 is used for connecting with the stay cable 13, and the stay cable 13 is pulled by the puller 12 to move along with the guy cable 7, so that the end of the stay cable 13 is lifted to a tower fixing position, thereby enabling the stay cable 13 to reach a higher height.
The embodiment of the utility model provides a pair of multi-functional steel cable tower cap and suspension cable installation device's principle does:
two sides of the cable tower 1 are respectively provided with a set of traction system, the top of the cable tower 1 is provided with a hanger 5 with a pulley 6, steel wire ropes of the traction systems are connected through a traction cable 7, and the traction cable 7 bypasses the pulley 6 to turn to form single circulation, so that cable hanging construction is carried out by utilizing the hanger 5.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It is noted that, in the present invention, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely illustrative of the invention and is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a multi-functional steel cable tower cap and suspension cable installation device which characterized in that, it includes:
a pylon (1);
the hoisting frame (5) is fixed at the upper end of the cable tower (1), and a pulley (6) is installed on the hoisting frame (5);
the first winch traction system (3) is arranged on the side span side of the cable tower (1), and a first steel wire rope (31) is arranged on the first winch traction system (3);
the second winch traction system (4) is arranged on the midspan side of the cable tower (1), a second steel wire rope (41) is arranged on the second winch traction system (4), the second steel wire rope (41) is connected with the traction cable (7), and the traction cable (7) bypasses the pulley (6) and is connected with the first steel wire rope (31).
2. The multifunctional steel cable tower cap and stay cable installation device of claim 1, wherein the hanger (5) comprises:
at least two columns (51) fixed to both sides of the cable tower (1), respectively;
a support beam (52) fixed between the two columns (51);
and a longitudinal beam (53) fixed to the support beam (52), wherein the longitudinal beam (53) extends in the bridge direction, the number of the pulleys (6) is at least two, and the two pulleys (6) are respectively mounted at two ends of the longitudinal beam (53).
3. The multifunctional steel cable tower cap and stay cable installation device of claim 2, wherein:
the limiting part (55) is installed at the upper end of the cable tower (1), the stand column (51) penetrates through the limiting part (55), and the stand column (51) can move along the axis direction and is fixed on the limiting part (55) through a pin shaft.
4. The multifunctional steel cable tower cap and stay cable installation device of claim 2, wherein:
the upright post (51) is provided with a counter force seat (56), the top of the cable tower (1) is provided with a jack (14), and the jack (14) is supported at the bottom of the counter force seat (56).
5. The multifunctional steel cable tower cap and stay cable installation device of claim 2, wherein:
a connecting system (54) is fixed between the two upright posts (51), and the connecting system (54) is X-shaped.
6. The multifunctional steel cable tower cap and stay cable installation device of claim 2, wherein:
install electric block (8) on longeron (53), tower cap (9) are installed at the top of cable tower (1), electric block (8) with tower cap (9) are connected.
7. The multifunctional steel cable tower cap and stay cable installation device of claim 6, wherein:
the upright post (51) is positioned on the outer side of the tower cap (9), a fixing block (57) is arranged on the upright post (51), and the fixing block (57) is fixed with the tower cap (9).
8. The multifunctional steel cable tower cap and stay cable installation device of claim 1, wherein:
the first steel wire rope (31) and the second steel wire rope (41) are wound on the tackle pulley (10), and two ends of the traction rope (7) are connected with the tackle pulley (10).
9. The multifunctional steel cable tower cap and stay cable installation device of claim 8, wherein:
an anchoring steel wire rope (11) is fixed on the tackle pulley (10), and the anchoring steel wire rope (11) is anchored on the ground.
10. The multifunctional steel cable tower cap and stay cable installation device of claim 1, wherein:
and a drawing device (12) is installed on the traction cable (7), and the drawing device (12) is used for being connected with the stay cable (13).
CN202220691870.8U 2022-03-28 2022-03-28 Multifunctional steel cable tower cap and stay cable installation device Active CN217053072U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220691870.8U CN217053072U (en) 2022-03-28 2022-03-28 Multifunctional steel cable tower cap and stay cable installation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220691870.8U CN217053072U (en) 2022-03-28 2022-03-28 Multifunctional steel cable tower cap and stay cable installation device

Publications (1)

Publication Number Publication Date
CN217053072U true CN217053072U (en) 2022-07-26

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ID=82466448

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220691870.8U Active CN217053072U (en) 2022-03-28 2022-03-28 Multifunctional steel cable tower cap and stay cable installation device

Country Status (1)

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CN (1) CN217053072U (en)

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Effective date of registration: 20240126

Address after: Room 6-208, No.1 Jinyuan Road, Baiyun District, Guangzhou City, Guangdong Province, 510000

Patentee after: Guangdong Guangzhu Intercity Rail Transit Co.,Ltd.

Country or region after: China

Patentee after: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd.

Patentee after: China National Railway Group Co.,Ltd.

Address before: 430050 No. 38, Hanyang Avenue, Hanyang District, Hubei, Wuhan

Patentee before: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd.

Country or region before: China

Patentee before: CHINA RAILWAY BRIDGE SCIENCE RESEARCH INSTITUTE, Ltd.

Patentee before: THE 5TH ENGINEERING Co.,Ltd. MBEC

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