CN217055207U - Tunnel is first a steel bow member connecting plate protection device - Google Patents
Tunnel is first a steel bow member connecting plate protection device Download PDFInfo
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- CN217055207U CN217055207U CN202220721865.7U CN202220721865U CN217055207U CN 217055207 U CN217055207 U CN 217055207U CN 202220721865 U CN202220721865 U CN 202220721865U CN 217055207 U CN217055207 U CN 217055207U
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Abstract
The utility model relates to the technical field of tunnel construction, and discloses a tunnel primary steel arch connecting steel plate protection device, which comprises a primary steel arch, wherein the primary steel arch comprises two transverse plates and a longitudinal plate, the two transverse plates are respectively and fixedly arranged on two opposite side walls of the longitudinal plate, the two transverse plates are arranged in parallel, a connecting steel plate is fixedly arranged at the end part of the primary steel arch, the end part of the primary steel arch and the connecting steel plate are arranged in a mutually vertical way, and two opposite sides of the connecting steel plate are both sheathed with a protection block; the utility model discloses a setting of two protection pieces can effectively protect the steel connecting plate, can avoid steel connecting plate under the state of no protection, in construction such as lower step excavation, arouse four angles of steel connecting plate to stick up the limit and curl because of the collision, the steel connecting plate that leads to high strength bolt can't install in place or upper and lower step connects inseparably, and this device preparation is convenient, construction simple operation, and performance is good, and the material is simple, the material quantity is few, repeatedly usable, and economic benefits is high.
Description
Technical Field
The utility model relates to a tunnel construction technical field, in particular to tunnel just props up steel bow member and connects steel sheet protection device.
Background
If the geological conditions are poor, the tunnel engineering primary support needs to adopt a steel grating arch or a profile steel arch bolting and shotcreting support, the steel arch is processed in a processing plant outside a tunnel hole in sections, before installation, the steel arch is transported to a tunnel face excavation site, the left section and the right section are manually assembled on the ground, then the steel arch is vertically assembled, after welding and positioning with an excavation face anchor rod, longitudinal connecting steel bars among steel frames are constructed, steel bar meshes are installed, and finally, primary support concrete is sprayed.
However, in the construction such as lower step excavation, easily arouse because of the collision that four angles of connecting steel plate stick up the limit and curl for high strength bolt can't install in place or the connecting steel plate of upper and lower step is connected not closely, is not convenient for use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tunnel is a steel bow member connecting plate protection device just to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a tunnel is a steel bow member connecting plate protection device just, includes just a steel bow member, just a steel bow member includes two diaphragms and a longitudinal plate, two the diaphragm is fixed mounting respectively in the double-phase to the lateral wall of longitudinal plate, two the diaphragm is parallel to each other, the tip fixed mounting of just a steel bow member has connecting plate, just prop up the tip and the connecting plate mutually perpendicular setting of steel bow member, connecting plate's double-phase offside all overlaps and is equipped with the protection piece, the installation cavity has been seted up to the inside of protection piece, connecting plate inserts in the installation cavity, the recess has been seted up to the roof of protection piece, the diaphragm inserts in the recess, a plurality of through-holes have been seted up on the connecting plate.
As an optimal technical scheme of the utility model, be provided with the clearance between the roof of steel connecting plate and the top inner wall of installation cavity.
As an optimal technical scheme of the utility model, be provided with the detaching assembly on the front wall of diaphragm, the detaching assembly includes support ring and support column, support ring fixed mounting is on the diaphragm, the support column runs through the support ring, just support column and support ring sliding fit, the bottom fixed mounting of support column has the ejector pad, the ejector pad sets up to the toper, the bottom pointed end of ejector pad is located between the lateral wall of two protection pieces.
As an optimized technical scheme of the utility model, the top fixed mounting of support column has the clamp plate.
As an optimal technical scheme of the utility model, the cover is equipped with the spring on the support column, the top of spring with clamp plate fixed connection, the bottom of spring with support ring fixed connection.
As a preferred technical scheme of the utility model, the through-hole is provided with four, and four through-holes set up the four corners at the connecting steel plate respectively.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a setting up of two protection pieces can effectively protect connecting steel plate, can avoid connecting steel plate under the state of no protection, in constructions such as lower step excavation, arouse connecting steel plate's four angles because of the collision and stick up the limit and curl, lead to high strength bolt can't install the connecting steel plate of target in place or upper and lower step and connect inseparably, this device preparation is convenient, construction simple operation, performance is good, the material is simple, the material quantity is few, repeatedly usable, economic benefits is high.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a first embodiment of the present invention;
fig. 2 is an exploded view of a first embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a second embodiment of the present invention;
fig. 4 is a schematic sectional view of the detaching assembly of the present invention.
In the figure: 1. primarily supporting a steel arch frame; 101. a transverse plate; 102. a longitudinal plate; 2. connecting steel plates; 201. a through hole; 3. a protection block; 301. a groove; 4. disassembling the assembly; 41. a support ring; 42. a support column; 43. a push block; 44. and (7) pressing a plate.
Detailed Description
Example 1:
as shown in fig. 1 and fig. 2, the utility model provides a tunnel primary steel arch connecting steel plate protection device, which comprises a primary steel arch 1, wherein the primary steel arch 1 is arranged in an inverted U-shape, the primary steel arch 1 comprises two transverse plates 101 and a longitudinal plate 102, the two transverse plates 101 are respectively and fixedly mounted on two opposite side walls of the longitudinal plate 102, the two transverse plates 101 are arranged in parallel, the transverse plate 101 is perpendicular to the longitudinal plate 102, the transverse plate 101 and the longitudinal plate 102 are both arranged in an inverted U-shape, the two transverse plates 101 and the longitudinal plate 102 are in an integrated structure, the connecting steel plate 2 is fixedly mounted at the end of the primary steel arch 1, the end of the primary steel arch 1 is arranged in perpendicular to the connecting steel plate 2, the two opposite sides of the connecting steel plate 2 are both sleeved with a protection block 3, the protection block 3 is made of steel material, a mounting cavity is arranged inside the protection block 3, connecting steel plate 2 inserts in the installation cavity, two recesses 301 have been seted up to the roof of protection piece 3, diaphragm 101 inserts in the recess 301, a plurality of through-holes 201 have been seted up on connecting steel plate 2.
When in installation, the two protection blocks 3 are respectively sleeved on the connecting steel plate 2 from the left side and the right side and hung on the connecting steel plate 2 to finish the installation, then the concrete is sprayed to the connecting steel plate 2 and the protection block 3 for reinforcement, when in dismantling, the primary sprayed concrete on the left and right protection blocks 3 is chiseled off, the left and right protection blocks 3 are respectively separated left and right to complete the dismantling, the two protection blocks 3 can effectively protect the connecting steel plate 2, and can prevent the connecting steel plate 2 from being in an unprotected state, in the construction such as lower step excavation, because of the collision arouses four angles of connecting steel sheet 2 to stick up the limit and curl, lead to the unable installation of high strength bolt to target in place or the connecting steel sheet 2 of upper and lower step is connected inseparably, this device preparation is convenient, construction simple operation, and performance is good, and the material is simple, the material quantity is few, repeatedly usable, and economic benefits is high.
In this embodiment, preferably, four through holes 201 are provided, and the four through holes 201 are respectively provided at four corners of the connecting steel plate 2; the through-hole 201 is used to fix the connection steel plate 2 to the ground.
In this embodiment, preferably, a gap is provided between the top wall of the connecting steel plate 2 and the top inner wall of the mounting cavity; through the setting in clearance for when spraying concrete on connecting steel plate 2 and protection piece 3, partial concrete can get into the clearance department between connecting steel plate 2 and the installation cavity, thereby improves the fastness between connecting steel plate 2 and the protection piece 3, prevents that protection piece 3 from droing.
Example 2:
as shown in fig. 3 and 4, in the embodiment of the present invention, the front wall of the horizontal plate 101 is provided with the detaching assembly 4, the detaching assembly 4 includes a supporting ring 41 and a supporting pillar 42, the supporting ring 41 is fixedly mounted on the horizontal plate 101, the supporting pillar 42 runs through the supporting ring 41, and the supporting pillar 42 is in sliding fit with the supporting ring 41, the bottom end of the supporting pillar 42 is fixedly mounted with a pushing block 43, the pushing block 43 is set to be conical, and the bottom tip of the pushing block 43 is located between the side walls of the two protection blocks 3.
In this embodiment, preferably, a pressing plate 44 is fixedly installed at the top end of the supporting column 42; when the protection block 3 needs to be detached, the pressing plate 44 is impacted by a hammer, the pressing plate 44 drives the supporting columns 42 to move downwards, so that the pushing block 43 is driven to move downwards, the pushing block 43 gradually pushes away the two protection blocks 3 when moving downwards, and the protection block 3 is separated from the connecting steel plate 2, so that the protection block 3 can be detached conveniently.
In this embodiment, preferably, a spring (not shown in the drawings) is sleeved on the supporting column 42, the top end of the spring is fixedly connected with the pressing plate 44, and the bottom end of the spring is fixedly connected with the supporting ring 41; through the arrangement of the spring, the pushing block 43 is not contacted with the protection block 3 in a natural state, so that the pushing block 43 is prevented from obstructing the installation of the protection block 3 in the installation process.
The working principle is as follows: during installation, the two protection blocks 3 are sleeved on the connecting steel plate 2 from the left side and the right side respectively, the installation is finished by hanging the protection blocks on the connecting steel plate 2, then concrete is sprayed towards the connecting steel plate 2 and the protection blocks 3 for reinforcement, during dismantling, the primary sprayed concrete on the left protection block 3 and the right protection block 3 is chiseled off, the left protection block 3 and the right protection block 3 are separated leftwards and rightwards respectively to finish dismantling, the connecting steel plate 2 can be effectively protected by the arrangement of the two protection blocks 3, and the phenomenon that four corners of the connecting steel plate 2 are warped due to collision in the construction of excavation of a lower step and the like under the unprotected state of the connecting steel plate 2, so that high-strength bolts cannot be installed in place or the connecting steel plates 2 of the upper step and the lower step are not tightly connected can be avoided; when the protection block 3 needs to be detached, the pressing plate 44 is impacted by a hammer, the pressing plate 44 drives the supporting columns 42 to move downwards, so that the pushing block 43 is driven to move downwards, the pushing block 43 gradually pushes away the two protection blocks 3 when moving downwards, and the protection block 3 is separated from the connecting steel plate 2, so that the protection block 3 can be detached conveniently.
Claims (6)
1. The utility model provides a tunnel is a steel bow member connecting plate protection device just, is including just propping up steel bow member (1), its characterized in that: just prop up steel bow member (1) and include two diaphragm (101) and a longitudinal plate (102), two diaphragm (101) are fixed mounting respectively in the double-phase to the lateral wall of longitudinal plate (102), two diaphragm (101) parallel arrangement each other, the tip fixed mounting of just propping up steel bow member (1) has connecting steel plate (2), the double-phase offside of connecting steel plate (2) all overlaps and is equipped with protection piece (3), the installation cavity has been seted up to the inside of protection piece (3), connecting steel plate (2) insert in the installation cavity, recess (301) are seted up to the roof of protection piece (3), diaphragm (101) insert in recess (301), a plurality of through-holes (201) have been seted up on connecting steel plate (2).
2. The protection device for the connection steel plate of the primary support steel arch of the tunnel according to claim 1, characterized in that: a gap is formed between the top wall of the connecting steel plate (2) and the inner wall of the top of the mounting cavity.
3. The protection device for the connection steel plate of the tunnel primary support steel arch according to claim 1, characterized in that: be provided with on the front wall of diaphragm (101) and dismantle subassembly (4), dismantle subassembly (4) including support ring (41) and support column (42), support ring (41) fixed mounting is on diaphragm (101), support column (42) run through support ring (41), just support column (42) and support ring (41) sliding fit, the bottom fixed mounting of support column (42) has ejector pad (43), ejector pad (43) set up to the toper, the bottom tip of ejector pad (43) is located between the lateral wall of two protection pieces (3).
4. The protection device for the connection steel plate of the tunnel primary support steel arch according to claim 3, characterized in that: and a pressure plate (44) is fixedly mounted at the top end of the supporting column (42).
5. The protection device for the connection steel plate of the tunnel primary support steel arch according to claim 4, wherein: the supporting column (42) is sleeved with a spring, the top end of the spring is fixedly connected with the pressing plate (44), and the bottom end of the spring is fixedly connected with the supporting ring (41).
6. The protection device for the connection steel plate of the primary support steel arch of the tunnel according to any one of claims 1 to 5, wherein: the number of the through holes (201) is four, and the four through holes (201) are respectively arranged at four corners of the connecting steel plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220721865.7U CN217055207U (en) | 2022-03-29 | 2022-03-29 | Tunnel is first a steel bow member connecting plate protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220721865.7U CN217055207U (en) | 2022-03-29 | 2022-03-29 | Tunnel is first a steel bow member connecting plate protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217055207U true CN217055207U (en) | 2022-07-26 |
Family
ID=82467376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220721865.7U Active CN217055207U (en) | 2022-03-29 | 2022-03-29 | Tunnel is first a steel bow member connecting plate protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217055207U (en) |
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2022
- 2022-03-29 CN CN202220721865.7U patent/CN217055207U/en active Active
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