CN212898532U - Pull-buckle type connecting device suitable for steel arch frame segment of tunnel - Google Patents
Pull-buckle type connecting device suitable for steel arch frame segment of tunnel Download PDFInfo
- Publication number
- CN212898532U CN212898532U CN202020292224.5U CN202020292224U CN212898532U CN 212898532 U CN212898532 U CN 212898532U CN 202020292224 U CN202020292224 U CN 202020292224U CN 212898532 U CN212898532 U CN 212898532U
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- steel
- hinge
- pull
- sections
- steel arch
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 74
- 239000010959 steel Substances 0.000 title claims abstract description 74
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 101150097977 arch-1 gene Proteins 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008093 supporting effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The pull-buckle type connecting device suitable for the steel arch frame segment of the tunnel comprises n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type concave chain hinge. The utility model discloses steel bow member processing can wholly fold after finishing, convenient transportation. The installation is mainly mechanical installation and is manually assisted in positioning and connection. One steel arch can be installed at one time, and the construction efficiency is high, the speed is high and the cost is low.
Description
Technical Field
The utility model belongs to the technical field of the underground works construction and specifically relates to a draw knot formula connecting device suitable for steel bow member festival section in tunnel is related to.
Background
When a tunnel is tunneled in poor surrounding rocks, a steel arch is one of necessary supporting members, particularly, if a section steel frame is reasonably and timely installed, the supporting effect can be immediately exerted, which is very important for guaranteeing construction safety and controlling formation deformation, and is incomparable with other supporting members.
Under the conventional method, after each round of tunnel excavation is finished, workers are generally required to complete positioning of the steel arch under the condition of approaching an excavation surface, and then an arch bridge is installed and arch feet are fixed. The erection method divides the steel arch frame into a plurality of sections, manually erects and installs the sections by sections, and then connects the sections by bolts, so that the construction safety is poor, the speed is low, the occupied operation cycle time is long, and the erection quality is also problematic.
There is also a semi-automatic mounting method using a bolt connection, which is not very efficient and dangerous in screwing the bolt although the current situation is improved to some extent.
Disclosure of Invention
In order to overcome the defect that above-mentioned prior art exists, the utility model provides a higher steel bow member festival section that is applicable to the tunnel of raise the efficiency, security draw knot formula connecting device.
The utility model provides a technical scheme that its technical problem adopted is:
the pull-buckle type connecting device suitable for the steel arch frame segment of the tunnel comprises n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type concave chain hinge.
Furthermore, the hinge type concave chain hinge comprises a chain hinge shaft and two connecting concave steel plates which are connected with the chain hinge shaft and can respectively rotate around the chain hinge shaft, and the two connecting concave steel plates are respectively and fixedly connected with the end surfaces of two adjacent steel arches.
And when the steel arch frame is unfolded in place, the adjacent two sections of steel arches are fixed through the pull buckle structures on the concave steel plates, so that the fixed support of the steel arch frame is realized.
Preferably, the hinge shaft of the hinge type concave hinge is positioned on the inner side of the steel arch frame and is perpendicular to the tunnel excavation surface. Like this, when the steel bow member transversely expandes at the excavation face, when adopting and reserving core soil excavation method, the core soil can hinder the expansion of steel bow member, consequently the utility model relates to a steel bow member is particularly suitable for the tunnel.
The beneficial effects of the utility model are that: the steel arch frame can be integrally folded after being processed, and transportation is convenient. The installation is mainly mechanical installation and is manually assisted in positioning and connection. One steel arch can be installed at one time, and the construction efficiency is high, the speed is high and the cost is low.
Drawings
FIG. 1 is a schematic view of the arrangement structure of the present invention;
FIG. 2 is a schematic view of a hinge-type concave hinge at the junction of adjacent steel arches of the present invention;
FIG. 3 is a schematic drawing of the fastener plane at the junction of the adjacent steel arches of the present invention
Figure 4 is the drawing of the utility model
In the figure, 1-steel arch, 2-hinge type concave hinge, 3-hinge shaft, 4-concave steel plate, 5-hook plate, 6-locking arm, 7-pull rod and 8-base.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, a pull buckle type connecting device for steel arch sections of tunnels comprises five steel arches 1, wherein two adjacent steel arches 1 in the five steel arches 1 are connected through a hinge type concave hinge 2, the hinge type concave hinge 2 comprises a hinge shaft 3 and two connecting concave steel plates 4 which are connected with the hinge shaft 3 and can rotate around the hinge shaft respectively, and the two connecting concave steel plates 4 are also fixedly connected with the end surfaces of the two adjacent steel arches 1 respectively. The hook plate 5 and the base 8 of the pull buckle are respectively welded on the two connecting steel plates 4; when the steel arch frame is unfolded in place, the adjacent two sections of steel arches 1 are structurally fixed through the hook plates 5 and the locking arms 6 of the pull buckles, so that the fixed support of the steel arch 1 frame is realized. And a hinge shaft 3 of the hinge type concave hinge 2 is positioned on the inner side of the steel arch frame and meets the condition that the hinge shaft 3 is vertical to the tunnel excavation surface.
The installation method of the pull-buckle type connecting device suitable for the steel arch truss segment of the tunnel comprises the following steps:
(1) taking five sections of steel arches 1, sequentially connecting the five sections of steel arches by hinge type concave chain hinges 2 to form a whole, and then completely folding and conveying the steel arches to the bottom of the arch;
[ (2) lifting the top of the steel arch 1 frame by using a telescopic arm operating vehicle, erecting the folded steel arch 1 frame at a designed position, and then automatically unfolding;
(3) after the steel arch 1 frame is erected and positioned, welding and fixing the arch springing of the newly erected steel arch 1 frame and the arch springing of the steel arch 1 frame which is fixedly installed in the past by adopting steel bars;
(4) closing and fixing a hinge type concave hinge 2 between two adjacent sections of steel arches 1;
(5) pulling up the pull rod 7, and buckling the locking arm 6 above the pull rod 7 on the hook plate 5 of the other section part;
(6) and pulling down the pull rod 7 to fix the two steel arches.
(7) And welding other parts except the arch springing on the newly erected steel arch 1 frame with the previously installed steel arch 1 frame by adopting steel bars.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (4)
1. The pull-buckle type connecting device for the steel arch frame sections of the tunnel is characterized by comprising n sections of steel arches, wherein n is a positive integer not less than 2, and two adjacent sections of the n sections of steel arches are connected through a hinge type concave chain hinge.
2. The pull-snap type connecting device for steel arch segments of tunnels according to claim 1, wherein the hinge type concave hinge comprises a hinge shaft and two connecting concave steel plates which are connected with the hinge shaft and can rotate around the hinge shaft respectively, and the two connecting concave steel plates are also fixedly connected with the end surfaces of two adjacent steel arches respectively.
3. The pull-buckle type connecting device for the steel arch section of the tunnel according to claim 2, wherein the two connecting concave steel plates are respectively welded with corresponding pull-buckle structures at concave positions; when the steel arch frame is unfolded in place, the adjacent two sections of steel arches are fixed by the pull buckle structure, so that the fixed support of the steel arch frame is realized.
4. The pull-button type connecting device for steel arch segments of tunnels according to claim 2, wherein the hinge shaft of the hinge type concave hinge is positioned at the inner side of the steel arch and is perpendicular to the tunnel excavation surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292224.5U CN212898532U (en) | 2020-03-11 | 2020-03-11 | Pull-buckle type connecting device suitable for steel arch frame segment of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020292224.5U CN212898532U (en) | 2020-03-11 | 2020-03-11 | Pull-buckle type connecting device suitable for steel arch frame segment of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212898532U true CN212898532U (en) | 2021-04-06 |
Family
ID=75226414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020292224.5U Expired - Fee Related CN212898532U (en) | 2020-03-11 | 2020-03-11 | Pull-buckle type connecting device suitable for steel arch frame segment of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212898532U (en) |
-
2020
- 2020-03-11 CN CN202020292224.5U patent/CN212898532U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210406 |