CN216691106U - Can overturn articulated formula tunnel that targets in place fast in installation and just prop up steel bow member - Google Patents
Can overturn articulated formula tunnel that targets in place fast in installation and just prop up steel bow member Download PDFInfo
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- CN216691106U CN216691106U CN202123351290.9U CN202123351290U CN216691106U CN 216691106 U CN216691106 U CN 216691106U CN 202123351290 U CN202123351290 U CN 202123351290U CN 216691106 U CN216691106 U CN 216691106U
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Abstract
The utility model discloses a hinged tunnel primary support steel arch center capable of being quickly turned in place during installation, wherein two adjacent connecting foot plates can be attached together through rotation, the two lowermost adjacent connecting foot plates consist of an upper connecting foot plate and a lower connecting foot plate, a first connecting part is arranged on the lower connecting foot plate, a second connecting part is arranged on the upper connecting foot plate, a hinged shaft horizontally penetrates through hinged holes of the two connecting parts to realize hinging, the upper connecting foot plate and the lower connecting foot plate can form dislocation on the hinged shaft, an up-and-down gap is arranged between the hinged hole of the first connecting part and the hinged shaft, and the first connecting part can translate upwards relative to the hinged shaft through the gap during dislocation, so that the lower connecting foot plate is driven to translate upwards, and the height of the lowermost part steel arch center relative to the ground is further raised. When the utility model is installed on site, the lowest steel frame can be lifted up and then turned over, so that the problem that the lowest steel frame cannot be turned over smoothly due to limited space is solved.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a hinged tunnel primary support steel arch frame capable of being quickly turned in place during installation.
Background
In the construction of tunnel engineering, tunnel construction support must cooperate excavation warp to reduce the surrounding rock and become flexible, prevent the side rock fall of collapse, in IV, V class surrounding rock construction, adopt the preliminary bracing scheme that bow member cooperation anchor shotcrete was strutted in addition, still can increase other auxiliary measure under the special circumstances.
In the traditional construction of the tunnel, the tunnel primary support arch is generally formed by assembling a plurality of segmental arches in site construction, each segmental arch is independently conveyed into the tunnel from the outside of the tunnel firstly, and then the segmental arches are assembled one by one at the designed arch crown position through the cooperation of an arch trolley and manpower. However, in the construction, if the arch frame is excessively segmented, the assembling times can be increased, so that the workload is increased; if the number of the arch frame sections is too small, the arch frame of each section is long and heavy, alignment is difficult during assembly, and operation difficulty is high. In a word, the arch center is heavy in assembly work, a large amount of manual work is wasted, the assembly efficiency is low, the tunnel excavation face is in an unstable state before the arch center support is not erected, the phenomena of collapse, collapse of the vault, broken gravel and the like easily occur to the vault and the face, and the probability of potential safety hazards is higher as the installation time is longer. Therefore, the person skilled in the art invented an articulated tunnel primary support steel arch which is composed of several sections of steel frames hinged end to end. When the arch center is installed on site, the whole arch center is lifted to the designed arch top position through the lifting trolley, then the branch steel frames are unfolded and fixed with each other, and finally the whole arch center is fixed on the tunnel wall. When the hinged ends of two adjacent sections of steel frames are positioned at the inner side, in the unfolding process, because the adjacent steel frames above the arch frame are not tightly fixed together, or a convex inverted arch is arranged on the ground, the steel frame at the bottom is usually resisted by the ground when being turned and opened from a folded state. The conventional solution is to dig a groove on the ground for the lowest steel frame to pass through, but the method is time-consuming and labor-consuming, and is not favorable for quick installation of the arch center.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a hinged tunnel primary steel arch capable of being quickly turned in place during installation, wherein the height of a lowermost steel sub-frame of the arch relative to the ground is adjustable, and the lowermost steel sub-frame can be lifted up and then turned over during field installation so as to solve the problem that the lowermost steel sub-frame cannot be smoothly turned in place due to limited space.
In order to achieve the purpose, the utility model provides a hinged tunnel primary support steel arch center capable of being quickly turned in place during installation, which comprises an arch center body, wherein the arch center body is formed by hinging a plurality of arc-shaped steel sub-frames end to end, each hinged shaft is positioned on the inner side of the arch center body, the length of each steel sub-frame from the middle to two sides is gradually reduced, the next steel sub-frame can be folded and contracted to the inner side end of the last steel sub-frame, all the steel sub-frames on two sides can be finally folded and contracted to the inner side end of the steel sub-frame in the middle, a detachable fastening structure is arranged at each hinged point, each steel sub-frame can be fastened together through the fastening structure after being stretched to form an integral arch center, two ends of all the steel sub-frames are provided with connecting foot plates, two adjacent steel sub-frames are hinged through the hinged structure arranged at the inner side ends of the corresponding connecting foot plates, two adjacent connecting foot plates can be attached together through rotation, the two adjacent bottommost connecting foot plates consist of an upper connecting foot plate and a lower connecting foot plate, a first connecting part is arranged at the inner side end of the lower connecting foot plate, a second connecting part is arranged at the inner side end of the upper connecting foot plate, hinge holes are formed in the first connecting part and the second connecting part, the hinge shaft horizontally penetrates through the hinge holes of the first connecting part and the second connecting part to hinge the upper connecting foot plate and the lower connecting foot plate together, the upper connecting foot plate and the lower connecting foot plate can slide along the axial direction of the hinge shaft, so that the upper connecting foot plate and the lower connecting foot plate can form dislocation on the hinge shaft, the hinge hole of the second connecting part is matched with the hinge shaft, a gap in the up-down direction is formed between the hinge hole of the first connecting part and the hinge shaft, limiting columns for preventing the first connecting part and the second connecting part from falling off are arranged at two ends of the hinge shaft, when the upper connecting foot plate and the lower connecting foot plate are dislocated, first connecting portion can upwards translate through this clearance relative articulated shaft to drive down and connect the footboard upwards translation relatively, and then raise the height on the relative ground of below branch steel bay, make the below divide the steel bay to overturn smoothly and target in place.
In the scheme, the method comprises the following steps: the second connecting portion are sleeves matched with the hinged shafts, and the first connecting portion are sleeves with oval or flat cross sections. The sleeve with the oval or flat cross section is easy to realize that a gap in the vertical direction is reserved between the sleeve and the hinged shaft.
In the scheme, the method comprises the following steps: the fastening structure comprises a bolt, a nut and connecting foot plates, two adjacent connecting foot plates can be attached through rotation, each sub-steel frame extends to form an integral arch frame during attachment, mounting holes are correspondingly formed in the two connecting foot plates, and the two connecting foot plates can be fastened together by arranging the bolt in the mounting holes and matching with the nut for locking. The fastening structure is simple, convenient to operate, ingenious in design and low in cost, and the foot plates are connected with the hinge structures in a shared mode.
The utility model has the beneficial effects that:
1. the inner side ends of the upper connecting foot plate and the lower connecting foot plate are hinged together, and the upper connecting foot plate and the lower connecting foot plate can slide along the axial direction of the hinged shaft; when the arch center is installed on site, the lower connecting foot plate slides to the side of the upper connecting foot plate firstly, so that the upper connecting foot plate and the lower connecting foot plate are staggered on the articulated shaft; because a gap in the vertical direction exists between the first connecting part and the hinge shaft, the height of the lower connecting foot plate relative to the ground is adjustable when the lower connecting foot plate is staggered, namely the height of the lowest steel dividing frame is adjustable, the lowest steel dividing frame is firstly raised and then turned over, so that the problem that the lowest steel dividing frame cannot be smoothly turned in place due to limited space is solved, and the lower connecting foot plate slides to the lower part of the upper connecting foot plate after being turned in place to splice and fix the two connecting foot plates; and the steel frame is divided for the shortest steel frame to the below, and its weight is also lightest, easily realizes the position control of the steel frame is divided to the below through the arm of lifting trolley.
2. For traditional articulated tunnel first steel bow member, need not subaerial fluting during this bow member installation, be favorable to accelerating the installation rate, reduce installation cost.
Drawings
Fig. 1 is a schematic view of the present invention when folded.
Figure 2 is a schematic view of the utility model when deployed.
Figure 3 is a schematic view of the installation of the present invention in conjunction with a lifting trolley.
Fig. 4 is a schematic view of the upper connecting leg plate and the lower connecting leg plate being misaligned.
Fig. 5 is a schematic view of the upper connecting leg plate and the lower connecting leg plate when attached.
Fig. 6 is a schematic view of a fastening structure.
Detailed Description
As shown in figures 1-6, the primary support steel arch center of the articulated tunnel, which can be quickly turned in place during installation, comprises an arch center body A.
The arch frame body A is formed by hinging a plurality of arc-shaped sub steel frames 1 end to end, each hinging shaft 2 is positioned at the inner side of the arch frame body A, the length of each sub steel frame 1 is gradually reduced from the middle to two sides, the next sub steel frame 1 can be folded and contracted to the inner side end of the previous sub steel frame 1, and all the sub steel frames 1 at two sides can be finally folded and contracted to the inner side end of the middle sub steel frame 1. And detachable fastening structures B are arranged at the hinged points, and the sub steel frames 1 can be fastened together through the fastening structures B after being stretched to form an integral arch center.
The two ends of each sub-steel frame 1 are provided with connecting foot plates 8, the adjacent sub-steel frames 1 are hinged through the hinge structures arranged at the inner side ends of the corresponding connecting foot plates 8, and the adjacent two connecting foot plates 8 can be attached together through rotation. The two lowermost adjacent connecting foot plates 8 consist of an upper connecting foot plate 5 and a lower connecting foot plate 3, the inner side end of the lower connecting foot plate 3 is provided with a first connecting part 4, the inner side end of the upper connecting foot plate 5 is provided with a second connecting part 6, hinge holes are formed in the first connecting part 4 and the second connecting part 6, and the hinge shaft 2 horizontally penetrates through the hinge holes of the first connecting part 4 and the second connecting part 6 to hinge the upper connecting foot plate 5 and the lower connecting foot plate 3 together; and the upper connecting leg plate 5 and the lower connecting leg plate 3 can both slide along the axial direction of the hinge shaft 2, so that the upper connecting leg plate 5 and the lower connecting leg plate 3 can be dislocated on the hinge shaft 2.
The hinge hole of second connecting portion 6 matches with articulated shaft 2, is equipped with the clearance in upper and lower direction between the hinge hole of first connecting portion 4 and articulated shaft 2, and the both ends of articulated shaft 2 are equipped with the spacing post 7 that is used for preventing first connecting portion 4 and second connecting portion 6 and drops. When connecting sole 5 and connecting sole 3 dislocation down on, first connecting portion 4 can be relative articulated shaft 2 through this clearance and upwards translate to connect sole 3 and connect sole 5 upwards translation relatively under the drive, and then raise the height on the relative ground of below branch steelframe 1, make below divide steelframe 1 to overturn smoothly and target in place.
Preferably, the second connecting portion 6 is a sleeve fitted to the hinge shaft 2, and the first connecting portion 4 is a sleeve having an oval or flat cross-section. The sleeve with the oval or flat cross section is easy to realize that a gap in the vertical direction is reserved between the sleeve and the hinge shaft 2.
Except for the two adjacent connecting foot plates 8 at the lowest part, two sleeves matched with the hinge shaft 2 are arranged at intervals at the inner side end of one connecting foot plate 8 of the other two adjacent connecting foot plates 8, and the connecting foot plates 8 and the two sleeves form a concave structure; the middle part of the inner side end of the other connecting foot plate 8 is provided with a sleeve matched with the hinge shaft 2, the connecting foot plate 8 and the sleeve form a convex structure, the concave structure can be butted with the convex structure, and the hinge shaft 2 penetrates through the sleeves to hinge the two corresponding connecting foot plates 8 together. Except two adjacent connection sole 8 of the bottom, all the other two adjacent medial extremes of connecting sole 8 also articulate through the sleeve, and only the sleeve all matches with articulated shaft 2, need not reserve the clearance, sets up simplyr.
Preferably, the fastening structure B comprises a bolt 9, a nut 10 and a connecting foot plate 8, two adjacent connecting foot plates 8 can be attached through rotation, each sub-steel frame 1 extends to form an integral arch frame during attachment, mounting holes are correspondingly formed in the two connecting foot plates 8, and the two connecting foot plates 8 can be fastened together by arranging the bolt 9 in the mounting holes and matching with the nut 10 for locking. This fastening structure B is simple, convenient operation, and with hinge structure sharing connection sole 8, design benefit, with low costs.
Claims (3)
1. A hinged tunnel primary support steel arch capable of being quickly turned in place during installation comprises an arch body (A), wherein the arch body (A) is formed by hinging a plurality of arc-shaped sub steel frames (1) end to end, each hinged shaft (2) is positioned on the inner side of the arch body (A), the length of each sub steel frame (1) from the middle to two sides is gradually reduced, the next sub steel frame (1) can be folded and contracted to the inner side end of the last sub steel frame (1), all the sub steel frames (1) on two sides can be finally folded and contracted to the inner side end of the middle sub steel frame (1), a detachable fastening structure (B) is arranged at each hinged point, each sub steel frame (1) can be fastened together through the fastening structures (B) after being stretched to form an integral arch frame, two ends of all the sub steel frames (1) are provided with connecting foot plates (8), and adjacent sub steel frames (1) are hinged through the hinged structures arranged on the inner side ends of the corresponding connecting foot plates (8), two adjacent connection sole (8) can be in the same place through rotatory laminating, its characterized in that: the two lowermost adjacent connecting foot plates (8) consist of an upper connecting foot plate (5) and a lower connecting foot plate (3), the inner side end of the lower connecting foot plate (3) is provided with a first connecting part (4), the inner side end of the upper connecting foot plate (5) is provided with a second connecting part (6), the first connecting part (4) and the second connecting part (6) are both provided with hinge holes, the hinge shaft (2) horizontally penetrates through the hinge holes of the first connecting part (4) and the second connecting part (6) to hinge the upper connecting foot plate (5) and the lower connecting foot plate (3) together, the upper connecting foot plate (5) and the lower connecting foot plate (3) can slide along the axial direction of the hinge shaft (2), so that the upper connecting foot plate (5) and the lower connecting foot plate (3) can form dislocation on the hinge shaft (2), and the hinge hole of the second connecting part (6) is matched with the hinge shaft (2), be equipped with the clearance in upper and lower direction between the hinge hole of first connecting portion (4) and articulated shaft (2), the both ends of articulated shaft (2) are equipped with spacing post (7) that are used for preventing first connecting portion (4) and second connecting portion (6) and drop, when last connection sole (5) and lower connection sole (3) dislocation, relative articulated shaft (2) up-translation of first connecting portion (4) through this clearance ability to it connects sole (5) up-translation relatively to drive down connects sole (3), and then raises the height on the relative ground of below part steelframe (1), makes below part steelframe (1) overturn smoothly and targets in place.
2. The articulated tunnel primary support steel arch capable of being quickly turned into place during installation according to claim 1, wherein: the second connecting portion (6) is a sleeve matched with the hinged shaft (2), and the first connecting portion (4) is a sleeve with an oval or flat cross section.
3. The articulated tunnel primary support steel arch capable of being quickly turned into place during installation according to claim 1, wherein: fastening structure (B) includes bolt (9), nut (10) and connects sole (8), and adjacent two connect sole (8) can realize the laminating through the rotation, and each divides steelframe (1) to extend during the laminating and forms integral bow member, corresponds on adjacent two connect sole (8) and is provided with the mounting hole, can fasten two connection soles (8) together through setting up bolt (9) and cooperation nut (10) locking in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351290.9U CN216691106U (en) | 2021-12-29 | 2021-12-29 | Can overturn articulated formula tunnel that targets in place fast in installation and just prop up steel bow member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351290.9U CN216691106U (en) | 2021-12-29 | 2021-12-29 | Can overturn articulated formula tunnel that targets in place fast in installation and just prop up steel bow member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691106U true CN216691106U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123351290.9U Active CN216691106U (en) | 2021-12-29 | 2021-12-29 | Can overturn articulated formula tunnel that targets in place fast in installation and just prop up steel bow member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691106U (en) |
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2021
- 2021-12-29 CN CN202123351290.9U patent/CN216691106U/en active Active
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