CN212389340U - Front shield construction site assembling system in super-large-diameter shield tunneling machine - Google Patents
Front shield construction site assembling system in super-large-diameter shield tunneling machine Download PDFInfo
- Publication number
- CN212389340U CN212389340U CN202021300357.9U CN202021300357U CN212389340U CN 212389340 U CN212389340 U CN 212389340U CN 202021300357 U CN202021300357 U CN 202021300357U CN 212389340 U CN212389340 U CN 212389340U
- Authority
- CN
- China
- Prior art keywords
- shield
- shield body
- block
- blocks
- adjusting
- 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.)
- Active
Links
- 230000005641 tunneling Effects 0.000 title claims description 5
- 238000010276 construction Methods 0.000 title abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model belongs to the technical field of shield constructs quick-witted equipment. A front shield construction site assembling system in an oversized-diameter shield machine is used for alignment assembling of shield body blocks and comprises an originating station, an adjusting unit, an anti-torsion unit and a top block assembling unit, wherein a plurality of guide rails and a plurality of welding channels are distributed on the originating station, and a circle formed by fitting the upper surfaces of the plurality of guide rails and the peripheral surface of a shield body form a concentric circle; a plurality of groups of adjusting units are arranged on the starting platform, and the adjusting units are used for adjusting the height of the shield body blocks; the anti-twisting units are arranged at the end parts or/and the side parts of the shield body blocks and are used for limiting the left-right twisting of the shield body blocks; and the top block assembly unit is used for pressing the top shield assembled at the top finally in a blocking manner to complete the compression and alignment. This application structural design is reasonable, can improve assembly efficiency, reduces the construction risk, ensures the positioning accuracy and the sealing performance of assembly.
Description
Technical Field
The utility model belongs to the technical field of shield constructs quick-witted equipment, concretely relates to anterior shield building site equipment system in super large diameter shield constructs machine.
Background
The shield body of the ultra-large shield machine generally consists of a plurality of blocks of a middle front shield and a tail shield, and the blocks are assembled and welded to form a complete shield body after being transported to a construction site. Main parts of a host machine of the ultra-large shield machine are all installed on a middle front shield, the middle front shield is generally divided into 6-10 blocks, each block is about 120-180T in weight, hoisting, positioning and adjusting of each block are difficult during assembly in a construction site, the problems that a tunnel axis deviates, a shield body with unqualified sealing among the blocks is difficult to bear pressure, staggered platforms exist among the blocks to make other parts difficult to install and the like often exist, the assembly quality of the whole shield machine is concerned, and the assembly technology of the middle front shield construction site is one of key technical problems of equipment construction site assembly.
Disclosure of Invention
The utility model aims at the problem that above-mentioned exists with not enough, provide a shield building site equipment system in super large diameter shield constructs machine, its structural design is reasonable, can improve assembly efficiency, reduces the construction risk, the positioning accuracy and the sealing performance of guarantee assembly.
In order to realize the purpose, the adopted technical scheme is as follows:
the utility model provides a preceding shield building site equipment system in super large diameter shield constructs machine for the counterpoint equipment of shield body piecemeal, include:
the starting platform is provided with a plurality of guide rails and a plurality of welding channels, and a circle formed by fitting the upper surfaces of the guide rails and the peripheral surface of the shield body form a concentric circle;
the adjusting units are arranged on the starting platform and used for adjusting the height of the shield body blocks;
the anti-twisting units are arranged at the end parts or/and the side parts of the shield body blocks and are used for limiting the twisting of the shield body blocks; and
and the top block assembling unit is used for pressing the top shield body block assembled at the top finally to complete the compression and alignment.
According to the utility model discloses anterior shield building site equipment system in super large diameter shield constructs machine, preferably, the originating station is reinforced concrete pouring platform, the pre-buried pouring of guide rail is in the originating station, originating station is last to reserve have with the chamber of placing that the adjustment unit corresponds.
According to the utility model discloses anterior shield building site equipment system in super large diameter shield constructs machine, preferably, the adjusting unit includes for leveling hydraulic cylinder and control module, control module control multiunit the adjusting unit synchronization action or independent action.
According to the utility model discloses anterior shield building site equipment system in super large diameter shield constructs machine, preferably, the unit of preventing turning round sets up the fender fagging and the dog of welding on the guide rail at shield body piecemeal both ends of keeping off shield body piecemeal both sides bottom including the welding.
According to the utility model discloses anterior shield building site equipment system in super large diameter shield constructs machine, preferably, kicking block matched stack unit includes two support frames and sets up power push rod, two of exerting pressure on the support frame sets up respectively on two shield body piecemeals adjacent with top shield body piecemeal.
By adopting the technical scheme, the beneficial effects are as follows:
the method solves the problems of low positioning precision, difficult butt joint among blocks, unqualified shield body sealing, low assembly efficiency, high safety risk and the like in the construction site assembly of the conventional super-large-diameter shield machine, can realize the smooth installation of the front shield in the large-diameter shield machine with the diameter of more than or equal to 10m, and is safe, economic and good in application effect.
The starting station is structurally designed and functionally divided, so that the starting station can play the functions of supporting, moving, leveling and torsion preventing in the assembly process, a good foundation is provided for the assembly of the whole shield body, the stability of the whole assembly structure is guaranteed, the efficiency of the whole construction process is higher, and the assembly precision and the construction safety can be guaranteed.
The structural design of the torsion-proof unit can guarantee the stability in the assembling process, avoids the bottom shield body block torsion deviation when assembling the lateral shield body block, guarantees the whole stability, enables the assembling process to obtain effective guarantee, and avoids the risks of overturning and the like caused by the gravity center deviation caused by the continuous installation of a single side through the process design of the left and right sequential assembly.
The structural design of kicking block matched stack unit of this application can realize the installation of top shield body piecemeal counterpoint in the assembly process, reduces the assembly degree of difficulty, improves assembly efficiency to guarantee the accurate counterpoint between each shield body piecemeal, avoid the emergence of the unable problem of effectively embedding of top shield body piecemeal.
The whole assembling system and the assembling method can solve the problem that the assembling quality of the existing shield machine is not enough, overcome the problems of large assembling difficulty and low assembling efficiency in the current stage, and enable the design of the shield machine and the assembling of the shield machine to be unified.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 is a schematic top view of a starting station according to an embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional view of an originating station according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of an originating platform according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an adjusting unit according to an embodiment of the present invention.
Fig. 5 is a second schematic structural diagram of an adjusting unit according to an embodiment of the present invention.
Fig. 6 is a third schematic structural diagram of an adjusting unit according to an embodiment of the present invention.
Fig. 7 is one of schematic structural diagrams of an anti-twisting unit according to an embodiment of the present invention.
Fig. 8 is a second schematic structural diagram of an anti-twisting unit according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a top block assembly unit according to an embodiment of the present invention.
Fig. 10 is a second schematic structural view of a top block assembly unit according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a full-circle seal according to an embodiment of the present invention.
Fig. 12 is an enlarged view of the portion i in fig. 11.
Fig. 13 is a schematic view of the structure in the direction a-a of fig. 12.
Fig. 14 is an enlarged schematic view of section ii in fig. 11.
Fig. 15 is a schematic view of the structure in the direction B-B of fig. 14.
Fig. 16 is an enlarged schematic view of part iii in fig. 11.
Fig. 17 is a schematic view of the structure in the direction C-C of fig. 16.
Fig. 18 is an enlarged schematic view of the portion iv in fig. 11.
Fig. 19 is a schematic view of the structure in the direction D-D of fig. 18.
Number in the figure:
101 is an originating station, 102 is a welding channel, 103 is a guide rail and 104 is a placing cavity;
201 is a leveling hydraulic oil cylinder;
301 is a retaining plate;
401 is a supporting frame, 402 is a pressure power push rod;
501 is a bottom shield block, 502 is a top shield block, 503 is a side shield block, 504 is a middle anterior shield, 505 is a tail shield, and 506 is a notch ring;
601 is a sealing strip;
701 is the center vertical line of the bottom shield partitioning.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for describing various elements of the present invention, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience of describing the present invention, and not that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.
Referring to fig. 1 to 19, the application discloses a front shield construction site assembling system in an oversized-diameter shield machine, which is used for alignment assembling of shield body blocks, and comprises an originating station 101, an adjusting unit, an anti-twisting unit and a jacking block assembling unit, wherein a plurality of guide rails 103 and a plurality of welding channels 102 are distributed on the originating station 101, and a circle formed by fitting the upper surfaces of the plurality of guide rails 103 forms a concentric circle with the outer peripheral surface of a shield body; a plurality of groups of adjusting units are arranged on the starting platform 101, and the adjusting units are used for adjusting the heights of the shield body blocks; the anti-twisting units are arranged at the end parts or/and the side parts of the shield body blocks and are used for limiting the twisting of the shield body blocks; the top block assembly unit is used for pressing the top shield sub-block 502 assembled at the top finally to complete the compression and alignment.
The starting platform 101 is a reinforced concrete pouring platform, is generally poured by C30 and C35 reinforced concrete, has the bearing capacity of the weight of a shield host, pre-buried steel rails are used as shield body block contact stress points during pouring and sliding guide rails during forward jacking of a shield, the guide rails meet the bearing and shield body sliding requirements, the guide rails 103 are pre-buried and poured in the starting platform 101, and in order to ensure the longitudinal seam welding between the bottom shield body block of a front shield and the adjacent side shield body blocks in the shield machine, the starting platform needs to be provided with a longitudinal seam welding channel and a circumferential seam welding channel with the width of more than or equal to 1000 mm; in addition, in order to adjust, butt joint, position and the like between shield blocks, installation positions of 4 leveling hydraulic cylinders need to be reserved, that is, a placing cavity 104 corresponding to the adjusting unit is reserved on the originating platform 101. As shown in fig. 1-6.
The adjusting units in this embodiment include leveling hydraulic cylinders 201 and a control module, and the control module controls multiple groups of adjusting units to act synchronously or individually, and can also perform group control on multiple leveling hydraulic cylinders.
The anti-twisting unit in this embodiment includes retaining plates 301 welded to the bottoms of the two sides of the shield block and stoppers welded to the guide rails at the two ends of the shield block, and mainly performs stable support between the bottom shield block and the side shield block capable of directly providing the retaining plates in the vertical direction with the originating station, as shown in fig. 7 and 8.
The jacking block assembling unit in the embodiment comprises two supporting frames 401 and a pressure-applying power push rod 402 arranged on the supporting frames 401, the two supporting frames 401 are respectively arranged on two shield body sub-blocks adjacent to the top shield body sub-block, when the top shield body sub-block is installed, the top shield body sub-block is hoisted to the position with the height difference of the contact seam of the shield body sub-block adjacent to the left side and the right side of the top shield body sub-block being about 100mm, the top shield body sub-block is stabilized and fixed by a crane, 4 character plates are symmetrically welded on the left side block and the right side block of the top shield body sub-block to serve as reaction points, and a jack acts on the character plates to jack the jacking block downwards to force the left. And after the installation of the top block is finished, fastening the whole front middle shield connecting bolt.
The assembly of the middle and front shields is carried out by utilizing the assembly system of the middle and front shield construction site of the super-large-diameter shield tunneling machine, and the method specifically comprises the following steps:
a. building an originating platform according to the construction tunnel axis, the originating position and the size of the shield machine, and ensuring that the central line of the shield machine after the shield machine is assembled is consistent with the construction tunnel axis;
b. an adjusting unit is arranged on the originating station 101 in an alignment manner, the bottommost shield body block 501 is hoisted through hoisting equipment, placed on the guide rail 103, and the posture is adjusted;
c. anti-twist units are arranged at the side and end of the bottom shield segment 501, so that the bottom shield segment 501 is fixed relative to the originating station;
d. hoisting the lateral shield blocks 503 on both sides of the bottom shield block, circularly assembling the lateral shield blocks in a left-right manner, and arranging an anti-torsion unit between at least part of the lateral shield blocks 503 and the originating station;
e. hoisting the top shield body block 502, configuring a top block assembly unit before the top shield body block 502 is attached to the side shield body block 503, slowly lowering the top block assembly unit by hoisting equipment, and downwards pressing and stabilizing the top shield body through the top block assembly unit to finish pressing alignment;
f. and fastening connecting bolts among the shield body blocks.
In the above process steps, the construction process is further described in detail:
the front-middle shield assembly is the first step of shield body assembly, is the reference of the assembly of the rest blocks and the tail shield, and is a key process for ensuring the consistency of the host and the tunnel axis. Therefore, in step b, the position of the cross center vertical line, the installation position and the center vertical line 701 of the bottom shield segment are marked on the originating station before assembly; when the bottom shield body blocks are assembled, the central vertical line of the bottom shield body blocks is ensured to be consistent with the cross central vertical line of the tunnel starting station, and the distance X between the notch ring of the bottom shield body blocks and the starting wellhead framework meets the installation requirement of a cutter head for going into a well. The position and the height difference of the shield body bottom block in the assembling process are adjusted by 4 leveling hydraulic cylinders which are arranged in front and back rows at the position with strong structural rigidity of the bottom shield body block, and the leveling hydraulic cylinders can be controlled independently, in groups and synchronously.
Because the bottom shield body is hoisted and lowered into the well in a blocking manner, the posture of the bottom shield body is required to be adjusted according to the measurement result, the bottom shield body is large in block size and weight, and is lack of enough restraint after being placed on an originating station, therefore, in the step c, the gap between the anti-torsion units on the two sides of the bottom shield body and the originating station is 5 mm-15 mm, on one hand, the required space during posture adjustment can be guaranteed, on the other hand, the safety risk caused by left-right deflection or toppling of the shield body can be prevented, on the other hand, the anti-torsion units are provided with the retaining plates on the side parts, and on the other hand, the retaining.
In the step d, after the bottom shield body sub-blocks 501 are installed and adjusted in place, the left and right shield body sub-blocks are sequentially installed, and the left and right sub-blocks are sequentially installed according to the symmetrical sequence of the left side installed block and the right side installed block, so that the risks of shield body movement, deflection, overturning and the like caused by the gravity center shift of the whole shield body during unilateral continuous installation are avoided; when the left side block and the right side block of the shield body bottom block are installed and butted, an anti-torsion retaining support plate is welded at the bottom of the shield body bottom block, so that the assembled shield body is prevented from being twisted and overturned due to the unbalanced weight of a single side; and supporting and welding are carried out in time along with the installation of other shield body blocks until the installation of each lower block is completed.
In the step e, after the top block assembling unit presses in place, the positioning pins are disassembled between the shield body sub-blocks, and then the bolt connection is carried out.
The application also includes a sealing process; and a whole circle of seal is arranged on the contact surface of two adjacent shield body blocks, the whole circle of seal is formed by bonding a plurality of sealing strips 601, and the interfaces of two adjacent sealing strips 601 are bevel edge notches and are vertically overlapped for bonding. Specifically, after the shield body is installed in blocks, the shield body needs to bear 3-10 bar of muddy water pressure when working as a whole, and a whole circle of seal needs to be installed between contact surfaces of the shield bodies, as shown in fig. 11; the whole circle of seal is formed by bonding all sealing strips, a straight-line segment butt joint sealing bonding interface is cut along the 45-degree direction, a right-angle segment butt joint 120-degree interface is polished by abrasive paper to cut, a loctite sealing bonding adhesive is smeared, and after sealing installation is completed, a proper amount of lithium-based lubricating grease EP2 needs to be smeared on the surface. The abutting structure of the parts is shown in fig. 12-19.
The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
While the above description has described in detail the preferred embodiments for carrying out the invention, it should be understood that these embodiments are presented by way of example only, and are not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.
Claims (5)
1. The utility model provides a preceding shield building site equipment system in super large diameter shield constructs machine for the counterpoint equipment of shield body piecemeal, a serial communication port, include:
the starting platform is provided with a plurality of guide rails and a plurality of welding channels, and a circle formed by fitting the upper surfaces of the guide rails and the peripheral surface of the shield body form a concentric circle;
the adjusting units are arranged on the starting platform and used for adjusting the height of the shield body blocks;
the anti-twisting units are arranged at the end parts or/and the side parts of the shield body blocks and are used for limiting the twisting of the shield body blocks; and
and the top block assembling unit is used for pressing the top shield body block assembled at the top finally to complete the compression and alignment.
2. The assembly system of a front shield site in an ultra-large diameter shield tunneling machine according to claim 1, wherein the starting station is a reinforced concrete pouring station, the guide rails are pre-cast and poured in the starting station, and a placing cavity corresponding to the adjusting unit is reserved on the starting station.
3. The assembly system of an anterior shield site in an ultra-large diameter shield tunneling machine according to claim 1, wherein the adjusting units comprise leveling hydraulic cylinders and a control module, and the control module controls multiple groups of adjusting units to act synchronously or individually.
4. The assembly system of the shield site in the shield machine with the ultra-large diameter of claim 1, wherein the anti-torsion unit comprises retaining plates welded to the bottoms of the two sides of the shield block and retaining blocks welded to the guide rails at the two ends of the shield block.
5. The assembly system of claim 1, wherein the top block assembly unit comprises two support frames and a pressing power push rod arranged on the support frames, and the two support frames are respectively arranged on two shield body blocks adjacent to the top shield body block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300357.9U CN212389340U (en) | 2020-07-06 | 2020-07-06 | Front shield construction site assembling system in super-large-diameter shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300357.9U CN212389340U (en) | 2020-07-06 | 2020-07-06 | Front shield construction site assembling system in super-large-diameter shield tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212389340U true CN212389340U (en) | 2021-01-22 |
Family
ID=74256155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021300357.9U Active CN212389340U (en) | 2020-07-06 | 2020-07-06 | Front shield construction site assembling system in super-large-diameter shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212389340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706343A (en) * | 2020-07-06 | 2020-09-25 | 中铁工程装备集团技术服务有限公司 | Front shield construction site assembly system and method for super large diameter shield machine |
-
2020
- 2020-07-06 CN CN202021300357.9U patent/CN212389340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706343A (en) * | 2020-07-06 | 2020-09-25 | 中铁工程装备集团技术服务有限公司 | Front shield construction site assembly system and method for super large diameter shield machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108190757B (en) | Barrel frame supporting type steel platform and tower crane integral jacking device and jacking method thereof | |
| CN110552709B (en) | Self-advancing type integral station passing method and device suitable for large-diameter shield machine | |
| CN109098454B (en) | Hydraulic lifting construction method for high-altitude large-span curved roof | |
| CN110284904B (en) | Lining trolley and construction method thereof | |
| CN212389340U (en) | Front shield construction site assembling system in super-large-diameter shield tunneling machine | |
| CN103557011B (en) | A kind of side wall trolley | |
| CN109371851B (en) | Groove making machine with multiple bottom die head cover supporting frames | |
| CN115382919A (en) | An installation method for moving the main body of the sinking assembly next to a large rolling mill | |
| CN103712811B (en) | Combination beam pre-stress type is hydraulic bracket test-bed | |
| CN210660097U (en) | Top support device for turning around of shield machine | |
| CN210660096U (en) | Integral station-crossing device of shield tunneling machine | |
| CN104947804B (en) | A kind of steel bracket and the construction method that beam-column node structure is built using it | |
| CN111706343A (en) | Front shield construction site assembly system and method for super large diameter shield machine | |
| CN208632979U (en) | Three-dimensional adjusting tool for positioning segment prefabricated assembling beam in erection process | |
| CN215053223U (en) | Prestressing force system assembled underground structure | |
| CN217629489U (en) | Broken column jacking heightening and shaping combined hoop supporting system | |
| CN212316557U (en) | Prefabricated steel bent cap suitable for multi-strand road passes through | |
| CN112627859B (en) | Self-adjusting soft lap joint connected with needle beam trolley | |
| CN115233730A (en) | Top plate jacking device for V-shaped column and jacking construction method | |
| CN210217757U (en) | Overlength lining cutting platform truck | |
| CN212420237U (en) | Moving platform suitable for urban inner-span steel box girder welding | |
| CN210217759U (en) | Lining cutting platform truck | |
| CN108821127A (en) | The devices and methods therefor of disassembly lifting open type TBM in a kind of hole | |
| CN212270708U (en) | Guide beam device additionally arranged at two ends of main beam of bridge girder erection machine | |
| CN212295636U (en) | High strength building templates's strutting arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |