CN220849679U - Quick-conversion excavation bench for tunnel multi-section micro-step excavation construction method - Google Patents
Quick-conversion excavation bench for tunnel multi-section micro-step excavation construction method Download PDFInfo
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- CN220849679U CN220849679U CN202322823596.2U CN202322823596U CN220849679U CN 220849679 U CN220849679 U CN 220849679U CN 202322823596 U CN202322823596 U CN 202322823596U CN 220849679 U CN220849679 U CN 220849679U
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- bench
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000002893 slag Substances 0.000 description 10
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a rapid conversion excavation bench for a tunnel multi-section micro-step excavation construction method, which comprises a plurality of groups of vertical load supports, wherein two first support frames are arranged in parallel to form a group of vertical load supports, a second support frame is connected with the first support frame in each group of vertical load supports, the transverse connection of the excavation bench is enhanced, and a third support frame is connected with each group of vertical load supports; be equipped with a plurality of pipe fittings that encorbelments on the first support frame, first flexible pipe fitting cup joints in the pipe fitting that encorbelments, and the flexible pipe fitting of second cup joints in first flexible pipe fitting, and first flexible pipe fitting and the flexible pipe fitting of second constitute the detachable, adjustable width's of operation platform for operation in limited space, construction method conversion in-process, excavation rack can be changed according to specific demand fast. Compared with the prior art, the utility model can improve the construction efficiency, reduce the risk of the installation and the disassembly of the rack in the limited space, and save the cost.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a rapid conversion excavation bench for a tunnel multi-section micro-step excavation construction method.
Background
For tunnels with complex geological conditions and multiple tunnel section changes, the construction method needs to be adjusted according to surrounding rock and lining types of the tunnel face, and the step excavation height also needs to be changed. In the process of construction method conversion, the process of installing and detaching the excavation bench has great influence on the site construction progress and cost and also has high potential safety hazard.
In the three-step construction method, if the length of the step on the upper step remains long, tunnel burst hole slag can be accumulated on the upper step, and the dredger can transport and slag discharge after slag removal to the middle step; if the length of the step on the upper step is kept short, the excavation bench cannot be stably placed on the upper step, and the bench is placed on the excavation machine building platform when drilling and standing operations are required, so that the delay time is long; in all the above cases, the working time of the process is prolonged.
Disclosure of utility model
In order to solve the defects in the prior art, the utility model aims to provide the excavation rack for rapidly converting the tunnel multi-section micro-step excavation construction method, which can adapt to the excavation rack with the tunnel multi-section micro-three-step excavation height change, improve the construction efficiency and reduce the operation risks of rack installation and disassembly in a limited space.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
A rapid conversion excavation bench for a tunnel multi-section micro-step excavation construction method comprises a first support frame, a second support frame, a third support frame, overhanging pipe fittings, a first telescopic pipe fitting and a second telescopic pipe fitting;
The excavation rack comprises a plurality of groups of vertical load supports, and two first support frames are placed in parallel to form a group of vertical load supports; the second support frames comprise a plurality of second support frames, and each second support frame is connected with two first support frames in each group of vertical load supports; the third support frames are connected with each group of vertical load supports;
a plurality of overhanging pipe fittings are arranged on the first supporting frame; the first telescopic pipe fitting is connected with the overhanging pipe fitting, the second telescopic pipe fitting is connected with the first telescopic pipe fitting, the first telescopic pipe fitting and the second telescopic pipe fitting are used for forming an operation platform with adjustable width, and the overhanging pipe fitting is used for serving as a stress supporting point of the operation platform.
As a further scheme of the utility model, the overhanging pipe fittings are distributed and arranged on the first supporting frame along the vertical direction, and the overhanging pipe fittings on each group of vertical load supports are symmetrically arranged.
As a further scheme of the utility model, the first telescopic pipe fitting is sleeved in the overhanging pipe fitting, and the second telescopic pipe fitting is sleeved in the first telescopic pipe fitting.
As a further scheme of the utility model, the first telescopic pipe fitting is connected with a telescopic support rod, the other end of the telescopic support rod is connected with the first supporting frame, and the telescopic support rod is used for supporting an operation platform formed by the first telescopic pipe fitting.
As a further scheme of the utility model, the telescopic support rod piece is connected with the first support frame through a hinge joint and is provided with a bolt for fastening.
As a further scheme of the utility model, a fixing fastener is arranged at the joint of the telescopic support rod piece and the first telescopic pipe fitting.
As a further scheme of the utility model, the top of the excavation rack is provided with an extension support frame, the extension support frame is arranged perpendicular to the second support frame, and the extension support frame forms an overhanging structure.
As a further scheme of the utility model, a first operation platform is arranged on the lengthened support frame.
Compared with the prior art, the utility model has the beneficial effects that:
1. The utility model is characterized in that a plurality of overhanging pipe fittings are arranged on a first supporting frame; the first flexible pipe fitting is cup jointed in the pipe fitting of encorbelmenting, and the second flexible pipe fitting is cup jointed in the first flexible pipe fitting, and first flexible pipe fitting and the flexible pipe fitting of second constitute can dismantle, adjustable width's operation platform for operation in limited space, construction method conversion in-process, the excavation rack can be changed fast according to specific demand, if excavation step height changes, need not to reprocess the rack, with the operation platform that first flexible pipe fitting and the flexible pipe fitting of second constitute translation from top to bottom to suitable height can.
2. The excavation bench provided by the utility model is arranged on the middle step for working, and a bench placing platform is not required to be additionally built, so that the operation time is saved, the working efficiency is improved, the cost is saved, and the potential safety hazard is reduced.
3. According to the utility model, the excavation rack is arranged at the middle step position, the lengthened support frame is arranged at the top of the excavation rack to form the overhanging structure, the lengthened support frame is provided with the operation platform for construction, the upper step blast hole slag can be piled up in the middle step area, the slag removing operation by the excavator is not needed, and the defect that in the prior art, the tunnel blast hole slag is piled up at the upper step, and the excavator can carry out slag removing after removing slag to the middle step is overcome.
Drawings
Fig. 1 is a front view of the structure of the excavation bench of the present utility model.
Fig. 2 is a side view of the structure of the excavation bench of the present utility model.
Fig. 3 is a schematic view of an excavation stand for performing a job in a tunnel according to an embodiment of the present utility model.
Reference numerals in the drawings: 1-first support frame, 2-second support frame, 3-third support frame, 4-pipe fitting that encorbelments, 5-first flexible pipe fitting, 6-second flexible pipe fitting, 7-scalable support member, 8-fixed fastener, 9-extension support frame, 10-first operation platform, 11-second operation platform, 12-third operation platform, 13-scalable support member tie point.
Description of the embodiments
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1 to 3, in a preferred embodiment, a rapid switching excavation stand for a multi-section micro-step excavation construction method of a tunnel includes a first support frame 1, a second support frame 2, a third support frame 3, a cantilever pipe 4, a first telescopic pipe 5, a second telescopic pipe 6, a telescopic support rod 7, a fixing fastener 8, an extension support frame 9, a first working platform 10, a second working platform 11, a third working platform 12, and the like;
In the embodiment, the excavation rack comprises a plurality of groups of vertical load supports, the first support frames 1 provide the vertical load support of the whole excavation rack, and the two first support frames 1 are placed in parallel perpendicular to the ground to form a group of vertical load supports; the second support frames 2 comprise a plurality of second support frames 2, each second support frame 2 is connected with two first support frames 1 in each group of vertical load supports, and the transverse connection of the excavation bench is enhanced; the third support frame 3 is connected with each group of vertical load supports.
As a preferred embodiment, this embodiment is provided with 4 sets of vertical load supports, and each set of vertical load support comprises two first support frames 1, and each set of vertical load support parallel arrangement, for example, fig. 2 is a side view of the excavation rack, and two third support frames 3 are provided in the middle of four parallel first support frames 1, so as to play an auxiliary supporting role.
As shown in fig. 1, a plurality of overhanging pipe fittings 4 are arranged on a first supporting frame 1; the first telescopic pipe fitting 5 is sleeved in the overhanging pipe fitting 4, the second telescopic pipe fitting 6 is sleeved in the first telescopic pipe fitting 5, and the first telescopic pipe fitting 5 and the second telescopic pipe fitting 6 are used for forming a detachable and width-adjustable working platform, such as a second working platform 11 and a third working platform 12. In specific implementation, the overhanging pipe fitting 4 is fixed on the first support frame 1 in a welding mode, is distributed vertically along the first support frame 1, and the overhanging pipe fitting 4 on each group of vertical load supports is symmetrically arranged to provide stress supporting points of the second operation platform 11 and the third operation platform 12, so that an overhanging structure is formed. Preferably, in this embodiment, 7 overhanging pipe fittings 4 are disposed on each first supporting frame 1, and the working platform formed by the first telescopic pipe fitting 5 and the second telescopic pipe fitting 6 can be switched to 7 different heights.
As a preferred embodiment, in this embodiment, a steel pipe phi 108 is selected as the first telescopic pipe 5, a steel pipe phi 89 is selected as the first telescopic pipe 5, a steel pipe phi 76 is selected as the second telescopic pipe 6, and the steel pipe has higher strength and durability as a material, and can bear larger load and pressure. Phi 89 steel pipe sleeve is in phi 108 steel pipe, and phi 76 steel pipe sleeve is in phi 89 steel pipe, and through selecting steel pipe sleeve together of different specifications, the steel pipe extends to the outside, can realize operation platform's width adjustment, and select steel pipe sleeve together of different specifications, and the flexible pipe fitting of formation can provide more stable structure, helps improving operation platform's steadiness and security, avoids the accident emergence that leads to because of the structure is unstable.
In this embodiment, the first telescopic pipe 5 is connected with a telescopic support rod 7, the other end of the telescopic support rod 7 is hinged with the first support frame 1 through a telescopic support rod connection point 13, and is provided with a bolt for fastening, and the telescopic support rod 7 is used for supporting an operation platform formed by the first telescopic pipe 5. The telescopic support rod piece 7 is detachable, so that the telescopic support rod piece can be conveniently installed and detached, and the construction and detachment time of a working platform can be reduced; by fastening the bolts, the telescopic support rod 7 can be firmly fixed on the connection point, so that the stability and reliability of the connection point of the support rod are ensured, and potential safety hazards caused by movement or loosening are avoided.
The connection part of the telescopic support rod piece 7 and the first telescopic pipe piece 5 is provided with a fixing fastener 8, and the fixing fastener 8 forms a triangular stable system with the telescopic support rod piece 7 and the first telescopic pipe piece 5. In the embodiment, phi 89 steel pipe fasteners are selected as the fixing fasteners 8, so that the fixing fasteners have higher strength and durability.
As shown in fig. 2 and 3, an elongated support frame 9 is arranged at the top of the excavation bench, the elongated support frame 9 is placed perpendicular to the second support frame 2, the elongated support frame 9 forms an overhanging structure, and a first working platform 10 is arranged on the elongated support frame 9. In specific work, the excavation bench is arranged at the position of a step in the tunnel, and construction is performed on the upper step through a first working platform 10 arranged at the top of the excavation bench.
In the concrete implementation, if the heights of the upper step and the middle step of the tunnel are changed, the positions of the first telescopic pipe fitting 5, the second telescopic pipe fitting 6, the telescopic support rod piece 7 and the fixing fastener 8 can be vertically adjusted so as to be suitable for the change of the heights of the steps. When the three steps are excavated, the left side and the right side of the middle step cannot be excavated simultaneously, and one side support and an operation platform can be temporarily canceled, namely the operation platform formed by the first telescopic pipe fitting 5 and the second telescopic pipe fitting 6 is removed; if two steps are adopted for construction, the working platform formed by the first telescopic pipe fitting 5 and the second telescopic pipe fitting 6 is restored.
The rapid conversion excavation bench for the tunnel multi-section micro-step excavation construction method provided by the utility model can be used for implementing the following operations: (1) The upper step blast hole slag is stacked in the middle step area, so that a dredger is not required to carry out slag skimming operation; (2) The excavation rack is arranged on the middle step without building a rack placing platform; (3) If the height of the excavated steps is changed, the second working platform 11 or the third working platform 12 is translated up and down to a proper height without reprocessing the bench.
In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
While the utility model has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.
Claims (8)
1. The rapid conversion excavation bench for the tunnel multi-section micro-step excavation construction method is characterized by comprising a first support frame (1), a second support frame (2), a third support frame (3), overhanging pipe fittings (4), a first telescopic pipe fitting (5) and a second telescopic pipe fitting (6);
The excavation bench comprises a plurality of groups of vertical load supports, and two first support frames (1) are arranged in parallel to form a group of vertical load supports; the second support frames (2) comprise a plurality of second support frames, and each second support frame (2) is connected with two first support frames (1) in each group of vertical load supports; the third supporting frame (3) is connected with each group of vertical load supports;
A plurality of overhanging pipe fittings (4) are arranged on the first supporting frame (1); the first telescopic pipe fitting (5) is connected with the overhanging pipe fitting (4), the second telescopic pipe fitting (6) is connected with the first telescopic pipe fitting (5), the first telescopic pipe fitting (5) and the second telescopic pipe fitting (6) are used for forming an operation platform with adjustable width, and the overhanging pipe fitting (4) is used for serving as a stress supporting point of the operation platform.
2. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 1, wherein the overhanging pipe fittings (4) are distributed vertically on the first supporting frame (1), and the overhanging pipe fittings (4) on each group of vertical load supports are symmetrically arranged.
3. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 1, wherein the first telescopic pipe fitting (5) is sleeved in the overhanging pipe fitting (4), and the second telescopic pipe fitting (6) is sleeved in the first telescopic pipe fitting (5).
4. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 1, wherein the first telescopic pipe fitting (5) is connected with a telescopic support rod (7), the other end of the telescopic support rod (7) is connected with the first support frame (1), and the telescopic support rod (7) is used for supporting an operation platform formed by the first telescopic pipe fitting (5).
5. The rapid switching excavation bench for a multi-section micro-step excavation construction method of a tunnel according to claim 4, wherein the telescopic support rod (7) is connected with the first support frame (1) through a hinge, and is provided with a bolt for fastening.
6. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 4, wherein the connection part of the telescopic support rod piece (7) and the first telescopic pipe piece (5) is provided with a fixing fastener (8).
7. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 1, wherein an elongated support frame (9) is arranged at the top of the excavation bench, the elongated support frame (9) is placed perpendicular to the second support frame (2), and the elongated support frame (9) forms an overhanging structure.
8. The rapid switching excavation bench for the tunnel multi-section micro-step excavation construction method according to claim 7, wherein the lengthened support frame (9) is provided with a first working platform (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322823596.2U CN220849679U (en) | 2023-10-20 | 2023-10-20 | Quick-conversion excavation bench for tunnel multi-section micro-step excavation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322823596.2U CN220849679U (en) | 2023-10-20 | 2023-10-20 | Quick-conversion excavation bench for tunnel multi-section micro-step excavation construction method |
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| Publication Number | Publication Date |
|---|---|
| CN220849679U true CN220849679U (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322823596.2U Active CN220849679U (en) | 2023-10-20 | 2023-10-20 | Quick-conversion excavation bench for tunnel multi-section micro-step excavation construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220849679U (en) |
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- 2023-10-20 CN CN202322823596.2U patent/CN220849679U/en active Active
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