CN215595610U - Steel arch, arch section and splicing joint device - Google Patents

Steel arch, arch section and splicing joint device Download PDF

Info

Publication number
CN215595610U
CN215595610U CN202121886871.XU CN202121886871U CN215595610U CN 215595610 U CN215595610 U CN 215595610U CN 202121886871 U CN202121886871 U CN 202121886871U CN 215595610 U CN215595610 U CN 215595610U
Authority
CN
China
Prior art keywords
connecting plate
plate
arch
joint
groove
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
Application number
CN202121886871.XU
Other languages
Chinese (zh)
Inventor
廖金军
江峻
雷茂林
徐震
曹龙飞
乐丹
赵威威
颜泽峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Construction Heavy Industry Group Co Ltd
Original Assignee
China Railway Construction Heavy Industry Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Construction Heavy Industry Group Co Ltd filed Critical China Railway Construction Heavy Industry Group Co Ltd
Priority to CN202121886871.XU priority Critical patent/CN215595610U/en
Application granted granted Critical
Publication of CN215595610U publication Critical patent/CN215595610U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The application discloses a splicing joint device which comprises a first connecting plate (1) and a second connecting plate (2), wherein the first connecting plate (1) is provided with a clamping piece (3), and the second connecting plate is provided with a buckling mechanism (4); joint spare (3) are including joint board (31) and joint groove (32), buckle mechanism (4) are including elastic construction and spacing groove (47), joint board (31) with spacing groove (47) cooperate, joint groove (32) with elastic construction cooperatees, so that first connecting plate (1) with second connecting plate (2) align, and the restriction first connecting plate (1) with relative displacement between second connecting plate (2). The application also provides an arch frame section. The application also provides a steel arch. The application provides a concatenation piecing devices can improve the concatenation efficiency of steel bow member, realizes the rapid Assembly of steel bow member.

Description

Steel arch, arch section and splicing joint device
Technical Field
The application relates to the technical field of engineering equipment, in particular to a steel arch, an arch section and a splicing joint device.
Background
With the rapid development of the construction of infrastructures such as tunnels and underground engineering, a full-face hard rock Tunnel Boring Machine (TBM) becomes a modern complete tunnel construction device.
In the construction process of the full-face hard rock tunnel boring machine, in order to ensure the construction quality and safety, a steel arch frame is generally adopted for supporting operation. When the surrounding rock of the tunnel is broken or unstable, the steel arch is assembled on the tunnel wall formed by excavation to form support so as to control the deformation of the surrounding rock and prevent collapse. Therefore, a large amount of steel arches are needed in the construction process of the full-face hard rock tunnel boring machine.
The steel arch usually includes multisection steel arch festival, links together through splicing apparatus between the adjacent steel arch festival, and multisection steel arch festival forms annular steel arch after connecting gradually. In current construction technology, the concatenation of steel bow member is equipped with evenly distributed's bolt hole on the both ends of steel bow member usually, then aligns between two adjacent steel bow member by constructor, makes the bolt hole of two adjacent steel bow member align, then the manual work penetrates fastening bolt in the bolt hole in proper order to realize the connection of two steel bow member and fix. However, due to the fact that the operation field is limited in the tunnel construction process, bolt holes in the steel arch center sections are difficult to align, great difficulty is caused to the tunnel construction operation process, construction efficiency is low, and the progress of primary tunnel supporting is affected.
How to realize the quick and efficient splicing of the steel arch truss sections so as to ensure the construction efficiency is a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
To solve the above technical problems, a first object of the present invention is to provide a splice joint device; a second object of the present invention is to provide an arch section; a third object of the present invention is to provide a steel arch; the application provides a concatenation piecing devices is applied to the concatenation of steel bow member, makes things convenient for the bow member festival to connect the cyclization, can improve the concatenation efficiency of steel bow member, realizes the rapid Assembly of steel bow member, makes things convenient for the constructor to install, has improved the efficiency of construction, has simplified the difficulty of tunnel construction operation process, has avoided because of the limited unfavorable factor in tunnel construction operation place, makes things convenient for the constructor to install to improve the progress of tunnel preliminary bracing.
The technical scheme provided by the utility model is as follows:
a splicing joint device comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is provided with a clamping piece, and the second connecting plate is provided with a buckling mechanism;
the joint spare includes joint plate and joint groove, buckle mechanism includes elastic construction and spacing groove, the joint plate with the spacing groove cooperatees, the joint groove with elastic construction cooperatees, so that first connecting plate with the second connecting plate aligns, and the restriction first connecting plate with relative displacement between the second connecting plate.
Preferably, the clamping plate is specifically a first U-shaped plate, and the clamping groove is formed by fixedly connecting an open end of the first U-shaped plate with the first connecting plate.
Preferably, the limiting groove is formed by fixedly connecting an opening end of a second U-shaped plate with the buckling mechanism; the plane of the second U-shaped plate is perpendicular to the plane of the first U-shaped plate.
Preferably, the elastic structure specifically includes barrel, elastic component, latch tongue, barrel one end opening one end is sealed, the elastic component sets up in the barrel, just elastic component one end with the blind end of barrel links to each other, the other end with the latch tongue links to each other, the latch tongue can for the barrel removes, and stretches into in the joint groove.
Preferably, the closed one end of the cylinder is specifically: the closed end of the cylinder body is provided with a fixed plate, and a slidable baffle is also arranged in the cylinder body; the fixing plate is provided with a threaded hole, and a fastening screw penetrates through the threaded hole and is in contact with one side of the baffle; one end of the elastic piece, which is far away from the latch bolt, is fixedly connected with one side of the baffle, which is far away from the fastening screw.
Preferably, the clamping piece is arranged at the bottom of the first connecting plate; the buckle mechanism is arranged at the bottom of the second connecting plate.
Preferably, a bolt hole matched with the first connecting plate is formed between the first connecting plate and the second connecting plate.
An arch center section comprises an arch center section body and a splicing joint device, wherein the splicing joint device is any one of the splicing joint devices, one end of the arch center section body is fixedly connected with a first connecting plate, and the other end of the arch center section body is fixedly connected with a second connecting plate; when the two arch section bodies are spliced, the first connecting plate of one arch section body is spliced with the second connecting plate of the other arch section body.
A steel arch comprises at least two arch sections, wherein the arch sections are the arch sections.
Preferably, a plurality of the arch sections are spliced into a ring head and tail through the splicing joint device.
The application provides a concatenation piecing devices is applied to the concatenation of steel bow member, makes things convenient for the bow member festival to connect the cyclization, can improve the concatenation efficiency of steel bow member, realizes the rapid Assembly of steel bow member, makes things convenient for the constructor to install, has improved the efficiency of construction, has simplified the difficulty of tunnel construction operation process, has avoided because of the limited unfavorable factor in tunnel construction operation place, makes things convenient for the constructor to install to improve the progress of tunnel preliminary bracing.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of a splice joint arrangement in an embodiment of the present invention;
FIG. 2 is a front view of a first web of a splice joint assembly in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a first web in a splice joint arrangement in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a second web in a splice joint arrangement in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a snap mechanism in a splice joint arrangement in an embodiment of the present invention;
FIG. 6 is a schematic illustration of the assembly of arch segments in an embodiment of the utility model;
FIG. 7 is a schematic view of an embodiment of the present invention in which arch segments are assembled into a ring;
reference numerals: 1-a first connection plate; 2-a second connecting plate; 3-a clamping piece; 31-a clamping plate; 32-a clamping groove; 4-a snap-fit mechanism; 41-cylinder body; 42-an elastic member; 43-oblique tongue; 44-a fixed plate; 45-baffle plate; 46-fastening screws; 47-a limit groove; 5-the arch section body.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
The embodiments of the present application are written in a progressive manner.
As shown in fig. 1 to 7, an embodiment of the utility model provides a splice joint device, which includes a first connecting plate 1 and a second connecting plate 2, wherein the first connecting plate 1 is provided with a clamping member 3, and the second connecting plate is provided with a fastening mechanism 4;
the joint 3 includes joint plate 31 and joint groove 32, buckle mechanism 4 includes elastic structure and spacing groove 47, joint plate 31 with spacing groove 47 cooperatees, joint groove 32 with elastic structure cooperatees, so that first connecting plate 1 with second connecting plate 2 aligns, and the restriction first connecting plate 1 with relative displacement between second connecting plate 2.
The application provides a concatenation piecing devices is applied to the concatenation of steel bow member, makes things convenient for the bow member festival to connect the cyclization, can improve the concatenation efficiency of steel bow member, realizes the rapid Assembly of steel bow member, makes things convenient for the constructor to install, has improved the efficiency of construction, has simplified the difficulty of tunnel construction operation process, has avoided because of the limited unfavorable factor in tunnel construction operation place, makes things convenient for the constructor to install to improve the progress of tunnel preliminary bracing.
The application provides a concatenation piecing devices, joint 3 cooperatees with buckle mechanism 4 for first connecting plate 1 aligns with second connecting plate 2 and realizes the positioning of bow member festival, and the relative displacement between first connecting plate 1 of restriction and the second connecting plate 2, thereby makes and can not take place to deflect between the bow member festival that links together, can play the effect of strutting. Wherein, joint spare 3 includes joint plate 31 and joint groove 32, and buckle mechanism 4 includes elastic structure and spacing groove 47, and joint plate 31 cooperatees with spacing groove 47, is restricted joint plate 31's removal by spacing groove 47, and elastic structure cooperates with joint groove 32 simultaneously, by the removal of joint groove 32 restriction elastic structure to the realization is fixed first joint plate 1, second joint plate 2 positions. And the elastic structure can be deformed in the splicing process of the clamping piece 3 and the clamping mechanism 4, so that the clamping piece and the clamping mechanism can be smoothly spliced in place.
The application provides a concatenation piecing devices utilizes joint spare 3 and buckle mechanism 4 to cooperate, and is simple convenient, can directly realize the fixed of bow member festival and form wholly, realizes strutting the effect. Compare in using protruding rail and concave rail cooperation, make joint portion and joint spare carry out the loaded down with trivial details operation of joint again, this application assembly degree of difficulty is low, efficient, and the labour cost and the construction degree of difficulty that reduce shorten construction cycle and reduce the construction degree of difficulty, provide convenience for the secondary lining in follow-up tunnel.
In particular, the prior art requires transverse and longitudinal alignment during splicing and then uses fastening bolts for connection, but the fastening bolts are still difficult to align and assemble during actual use; or, hinge holes of two steel arches need to be accurately butted, then the two steel arches are connected by hinge shafts and fixed by bolts, but the double-hinge connection mechanism seems to be simple in structure and can realize rotation, splicing and fixing among the arch sections, but the hinge shafts need to be manually aligned and connected in the construction process, and the bolts are inserted for connection and splicing.
Preferably, the clamping plate 31 is a first U-shaped plate, and the clamping groove 32 is formed by fixedly connecting an open end of the first U-shaped plate with the first connecting plate 1.
Preferably, the clamping plate 31 is a first U-shaped plate, and an open end of the first U-shaped plate is fixedly connected to the first connecting plate 1 to form a rectangular slot, i.e., a clamping slot 32. Preferably, the limiting groove 47 is formed by fixedly connecting an open end of a second U-shaped plate with the fastening mechanism 4; the plane of the second U-shaped plate is perpendicular to the plane of the first U-shaped plate.
Preferably, the limiting groove 47 is formed by fixedly connecting the second U-shaped plate with the buckling mechanism 4, and the planes of the second U-shaped plate and the first U-shaped plate are perpendicular to each other, so that the limiting groove 47 formed by the second U-shaped plate can limit the position of the first U-shaped plate. Preferably, the first U-shaped plate is provided with two wing plates with a diameter larger than that of the limiting groove 47, so that the wing plates are in contact with the edge of the limiting groove 47 when clamping, and the position of the clamping piece 3 is fixed. But even not set up the pterygoid lamina, the concatenation piecing devices that this application provided also can restrict the position of joint spare 3 when assembling to the bow member festival on the bow member festival.
Preferably, the elastic structure specifically includes a cylinder 41, an elastic member 42, and a latch 43, one end of the cylinder 41 is open and the other end is closed, the elastic member 42 is disposed in the cylinder 41, one end of the elastic member 42 is connected to the closed end of the cylinder 41, the other end is connected to the latch 43, and the latch 43 is movable relative to the cylinder 41 and extends into the engaging groove 32.
Preferably, the elastic structure of the locking mechanism 4 comprises a cylinder 41, an elastic member 42 and a latch 43, and the latch 43 is inserted into the locking groove 32 to realize connection. Moreover, when the two arch frame sections are assembled, in the process of matching and assembling the clamping piece 3 and the clamping mechanism 4, the latch tongue 43 firstly retracts under the force of the clamping plate 31, and then after the clamping plate 31 is in place, the latch tongue 43 stretches out again under the force of the elastic piece 42 and is clamped in the clamping groove 32 to complete clamping.
Preferably, one end of the cylinder 41 is closed, specifically: the closed end of the cylinder 41 is provided with a fixed plate 44, and a slidable baffle 45 is also arranged in the cylinder; the fixing plate 44 is provided with a threaded hole, and a fastening screw 46 passes through the threaded hole and contacts with one side of the baffle plate 45; one end of the elastic piece 42 far away from the latch tongue 43 is fixedly connected with one side of the baffle plate 45 far away from the fastening screw 46.
Preferably, the cylinder 41 is further provided with a fixing plate 44, a baffle plate 45 and a fastening screw 46. The fixing plate 44 is provided with a threaded hole which is in threaded fit with a fastening screw 46, the fastening screw 46 penetrates through the threaded hole and abuts against one side of the baffle plate 45, and the other side of the baffle plate 45 is connected with the elastic piece 42. The position of the baffle 45 can be adjusted by rotating the fastening screw 46, so that the extending distance of the latch tongue 43 at the other end of the elastic piece 42 can be adjusted, the latch tongue 43 can be better buckled in the clamping groove 32, and the installation efficiency and the splicing strength of the steel arch frame are improved. The baffle 45 can also avoid the defects that the elastic piece 42 bends laterally and moves around in the expansion process to cause the inclination of the moving path of the latch tongue 43, so that the latch tongue is blocked and the like.
The elastic member 42 pushes the blocking plate 45 until the fastening screw 46 is released, so that the fastening screw 46 does not need to be connected with the blocking plate 45, and only needs to abut against the blocking plate 45 to realize adjustment.
The elastic member 42 is preferably a spring. Preferably, the outer wall of the cylinder 41 is welded and fixed with the bottom of the second connecting plate 2. When the elastic structure specifically comprises the cylinder body 41, the elastic member 42 and the latch 43, the second U-shaped plate is preferably fixedly connected with the cylinder body 41. Preferably, the cylinder 41 is welded to the first connection plate.
Preferably, the clamping piece 3 is arranged at the bottom of the first connecting plate 1; the buckling mechanism 4 is arranged at the bottom of the second connecting plate 2.
Preferably joint spare 3, buckle mechanism 4 set up respectively in the bottom of first connecting plate 1, second connecting plate 2, then when joint spare 3, the concatenation of buckle mechanism 4, first connecting plate 1, the inseparable laminating of second connecting plate 2 to also inseparable laminating when making the bow member section assemble.
Preferably, a matching bolt hole is further arranged between the first connecting plate 1 and the second connecting plate 2.
Use the concatenation piecing devices that this application provided both can realize the fixed of bow member festival, but general country rock normal use. When geological conditions are abominable, still be equipped with the matched with bolt hole between preferred first connecting plate 1, the second connecting plate 2, the first connecting plate 1 of rethread bolt-up and second connecting plate 2, further increase fastening force.
An arch center section comprises an arch center section body 5 and a splicing joint device, wherein the splicing joint device is any one of the splicing joint devices, one end of the arch center section body 5 is fixedly connected with a first connecting plate 1, and the other end of the arch center section body is fixedly connected with a second connecting plate 2; when the two arch section bodies 5 are spliced, the first connecting plate 1 of one arch section body 5 is spliced with the second connecting plate 2 of the other arch section body 5.
A steel arch comprises at least two arch sections, wherein the arch sections are the arch sections.
Preferably, a plurality of the arch sections are spliced into a ring head and tail through the splicing joint device.
This application still provides an arch frame festival, is applied to the arch frame festival with the concatenation piecing devices of this application on, realizes assembling fast. Particularly, first connecting plate 1, second connecting plate 2 are connected respectively to the both ends of bow member festival body 5, and then when two bow member festival bodies 5 splice, first connecting plate 1 of a bow member festival body 5 and second connecting plate 2 of another bow member festival body 5 cooperate, realize the concatenation.
The present application further provides a steel arch comprising at least two arch segments. More preferably, a plurality of arch frame sections are spliced into a ring rapidly through the splicing joint device head to tail.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present 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 utility model. 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 splicing joint device is characterized by comprising a first connecting plate (1) and a second connecting plate (2), wherein the first connecting plate (1) is provided with a clamping piece (3), and the second connecting plate is provided with a clamping mechanism (4);
joint spare (3) are including joint board (31) and joint groove (32), buckle mechanism (4) are including elastic construction and spacing groove (47), joint board (31) with spacing groove (47) cooperate, joint groove (32) with elastic construction cooperatees, so that first connecting plate (1) with second connecting plate (2) align, and the restriction first connecting plate (1) with relative displacement between second connecting plate (2).
2. Splice joint arrangement according to claim 1, characterized in that said snap-in plate (31) is embodied as a first U-shaped plate, said snap-in groove (32) being formed by a fixed connection of an open end of said first U-shaped plate with said first connection plate (1).
3. Splice joint arrangement according to claim 2, characterized in that the limiting groove (47) is formed by the fixed connection of the open end of a second U-shaped plate with the snap-in mechanism (4); the plane of the second U-shaped plate is perpendicular to the plane of the first U-shaped plate.
4. Splice joint arrangement according to any one of claims 1-3, characterized in that said resilient structure comprises a barrel (41), a resilient member (42), and a latch (43), said barrel (41) being open at one end and closed at the other end, said resilient member (42) being arranged inside said barrel (41), and said resilient member (42) being connected at one end to the closed end of said barrel (41) and at the other end to said latch (43), said latch (43) being movable relative to said barrel (41) and extending into said snap-in groove (32).
5. Splice joint arrangement according to claim 4, characterized in that said cylinder (41) is closed at one end in particular: the closed end of the cylinder body (41) is provided with a fixed plate (44), and a slidable baffle (45) is also arranged in the cylinder body; the fixing plate (44) is provided with a threaded hole, and a fastening screw (46) penetrates through the threaded hole and is in contact with one side of the baffle plate (45); one end of the elastic piece (42) far away from the latch tongue (43) is fixedly connected with one side of the baffle plate (45) far away from the fastening screw (46).
6. Splice joint arrangement according to one of the claims 1-3, 5, characterized in that the snap-in element (3) is arranged at the bottom of the first connecting plate (1); the buckling mechanism (4) is arranged at the bottom of the second connecting plate (2).
7. Splice joint arrangement according to any one of claims 1-3, 5, c h a r a c t e r i z e d in that between said first (1) and second (2) connection plates there are further provided cooperating bolt holes.
8. An arch segment comprising an arch segment body (5) and a splice joint device, characterized in that the splice joint device is a splice joint device according to any one of claims 1-7, the arch segment body (5) being fixedly connected at one end to the first connection plate (1) and at the other end to the second connection plate (2); when the two arch section bodies (5) are spliced, the first connecting plate (1) of one arch section body (5) is spliced with the second connecting plate (2) of the other arch section body (5).
9. A steel arch comprising at least two arch segments, wherein the arch segments are as claimed in claim 8.
10. The steel arch of claim 9 wherein a plurality of said arch segments are joined end to end in a ring by said splice joint arrangement.
CN202121886871.XU 2021-08-12 2021-08-12 Steel arch, arch section and splicing joint device Active CN215595610U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121886871.XU CN215595610U (en) 2021-08-12 2021-08-12 Steel arch, arch section and splicing joint device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121886871.XU CN215595610U (en) 2021-08-12 2021-08-12 Steel arch, arch section and splicing joint device

Publications (1)

Publication Number Publication Date
CN215595610U true CN215595610U (en) 2022-01-21

Family

ID=79881338

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121886871.XU Active CN215595610U (en) 2021-08-12 2021-08-12 Steel arch, arch section and splicing joint device

Country Status (1)

Country Link
CN (1) CN215595610U (en)

Similar Documents

Publication Publication Date Title
CN215595610U (en) Steel arch, arch section and splicing joint device
CN210217770U (en) Duct piece capable of being assembled quickly
CN111236649A (en) Steel pipe support down tube with telescopic rod length and adjustable plug angle
CN113756846B (en) Steel arch locking device, steel arch and steel arch assembling method
CN210858746U (en) Quick pin-connected panel support
CN113586098B (en) Detachable connection support equipment
CN212353109U (en) Splicing structure of combined type flattening roller
CN210370671U (en) Tenon shield segment and tenon shield segment with tenon joint
JP5559102B2 (en) Shaft assembly joining equipment
JP3014085B2 (en) Steel segment and its joint structure and joining method
CN114109029A (en) Upright column template and installation method thereof
CN111761286A (en) Shell assembling clamp
CN210135345U (en) Corrugated steel tenon type connecting flange
CN220705737U (en) Double-locking foot anchor pipe guiding device for tunnel steel arch construction
CN212297178U (en) Connecting structure
CN117134285B (en) Fireproof flame-retardant isolation board bracket for cable installation
CN110185478B (en) Splicing device, steel arch frame section and steel arch frame
CN105414850B (en) Position auxiliary frame
CN212176586U (en) Steel pipe support down tube with telescopic rod length and adjustable plug angle
CN215562632U (en) Combined base plate for placing reinforcement cage
CN220468825U (en) Cable-stayed end node and photovoltaic tubular pile
CN219343081U (en) Reverse drainage device for dam filling construction
CN217761031U (en) Subway underground excavation PBA station buckle arch primary support steel frame connection
CN212670825U (en) Assembled building reinforced concrete member
CN216741539U (en) Bridge tunnel excavates with protection bearing structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant