Quick dismounting and mounting operation platform for tunneling construction in narrow tunnel and construction method

Abstract

The invention provides a quick disassembly and assembly operation platform for tunneling construction in a narrow tunnel and a construction method, the operation platform comprises a main frame body, the top of the main frame body is provided with a first quick disassembly pedal, and a second quick disassembly pedal is arranged below the first quick disassembly pedal; the two sides of the main frame body are each correspondingly provided with a set of outer supporting frames, one end of each outer supporting frame is detachably connected with the main frame body, and the other end of each outer supporting frame can stretch out and draw back in the radial direction of the main frame body; and a third quick-release pedal is arranged on each group of outer supporting frames. Through the combination of the main frame body and the outer supporting frame, a plurality of drilling stations are provided for manual drilling operation in a narrow tunnel, multiple groups of personnel can stand for drilling, and the drilling efficiency is improved; through the telescopic outer supporting frame, the working platform can be stably connected with the wall face of the excavated part of the tunnel, the supporting stability is improved, the working platform can be rapidly separated from the excavated part, and the efficiency of evacuating the working platform before blasting is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a fast disassembly and assembly work platform and a construction method for excavation construction in a narrow tunnel. Background Art

[0002] Drainage tunnels are often set up in mining projects. However, compared with conventional tunnels, the clearance section of drainage tunnels is smaller. It is difficult to use large machinery to drill holes during the excavation process, and manual drilling operations can only be used. In addition, the existing work trolleys are large and cannot enter and exit the tunnel smoothly. Manual drilling operations can only be performed by standing on the ground, the drilling position is limited, and the drilling efficiency is low. During blasting operations, there must be no obstacles (materials, personnel, etc.) in front of the working surface to prevent the explosion shock wave from damaging the objects in front. Traditional scaffolding is not suitable because the rods need to be firmly connected to the tunnel wall, which is inconvenient to install and move, and there are great safety hazards in construction. Summary of the invention

[0003] The object of the present invention is to provide a fast disassembly and assembly work platform and a construction method for excavation construction in a narrow tunnel, so as to solve the problems in the above background.

[0004] The technical solution adopted by the present invention is: a fast disassembly and assembly working platform for excavation construction in a narrow tunnel, which comprises:

[0005] A main frame, wherein a first quick-release pedal is disposed on the top of the main frame, and a second quick-release pedal is disposed below the first quick-release pedal;

[0006] An outer support frame, a group of the outer support frames are respectively arranged on both sides of the main frame, one end of the outer support frame is detachably connected to the main frame, and the other end can be extended and retracted along the radial direction of the main frame; each group of the outer support frames is respectively provided with a third quick-release pedal.

[0007] Furthermore, the main frame includes columns and main beams, and a plurality of the columns are arranged in parallel in a ring shape. The main beam is located in the middle of the columns, and both ends are detachably connected to adjacent columns. The first quick-release pedal is buckled on the top of the column, and the second quick-release pedal is buckled on the main beam.

[0008] Furthermore, the first quick-release pedal includes a first plate portion and a plug-in block, wherein the plug-in block is located on the bottom surface of the first plate portion and corresponds one-to-one to the column; a plug-in groove is provided on the top of the column for installing the plug-in block; a first pin is inserted in the first plate portion, and the first pin passes through the plug-in block and then connects to the column.

[0009] Furthermore, the second quick-release pedal includes a second plate portion and a first hook, wherein the first hook is located on the opposite side of the second plate portion, and an end of the first hook facing away from the second plate portion is bent downward.

[0010] Furthermore, the external support frame includes an external support beam, an external support diagonal rod and a telescopic top rod, one end of the external support beam is connected to the main frame body, and the other end is provided with an internal thread groove, one end of the telescopic top rod is connected to the internal thread groove, and the other end is connected to the abutment block; the two ends of the external support diagonal rod are respectively connected to the main frame body and the external support beam, and the external support beam forms a triangular stable structure with the outer wall of the main frame.

[0011] Furthermore, the main frame is provided with a plurality of first positioning holes of different heights, and the ends of the external support cross beam and the external support diagonal rod facing away from the telescopic top rod are respectively provided with a second positioning hole and a third positioning hole, and the second positioning hole and the third positioning hole respectively correspond to different first positioning holes and are respectively used to install a second pin and a third pin.

[0012] Furthermore, a plurality of fourth positioning holes are provided on the external support beam, and the plurality of fourth positioning holes are distributed along the extension direction of the external support beam. A fifth positioning hole is provided at the top end of the external support diagonal rod, and the fifth positioning hole corresponds to the fourth positioning hole and is used for installing a fourth pin.

[0013] Furthermore, the third quick-release pedal includes a third plate portion and a second hook, wherein the second hook is located on opposite sides of the third plate portion, and an end of the second hook facing away from the third plate portion is bent downward.

[0014] The technical solution of the present invention also includes: a method for constructing a fast disassembly and assembly work platform for excavation construction in a narrow tunnel using the above-mentioned claim, which comprises the steps of:

[0015] Before drilling: place the main frame in front of the drilling operation surface, install the external support frames on both sides of the main frame, increase the length of the external support frames, and make the ends of the external support frames away from the main frame close to the wall of the excavated part of the flood drainage tunnel; install the first quick-release pedal, the second quick-release pedal and the third quick-release pedal on the main frame and the external support frames respectively;

[0016] Before blasting: remove the first quick-release pedal, the second quick-release pedal and the third quick-release pedal, shorten the length of the external support frame, separate the external support frame from the wall of the flood drainage tunnel, and remove the main frame and the external support frame.

[0017] The beneficial effects of the present invention are as follows: through the combination of the main frame and the external support frame, multiple drilling stations are provided for manual drilling operations in narrow tunnels, and multiple groups of personnel can stand and drill, thereby improving drilling efficiency; through the retractable external support frame, the work platform can be stably connected to the wall of the excavated part of the tunnel to improve the support stability, and can be quickly separated from it, thereby improving the efficiency of evacuating the work platform before blasting; in addition, the height of the external support frame can be adjusted according to actual work needs to provide drilling stations of different heights, and its adjustment methods are diverse and highly applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural diagram of an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional structural diagram of the main frame in an embodiment of the present invention;

[0020] Figure 3 is a front cross-sectional view of a state in which a first quick-release pedal is connected to a column in an embodiment of the present invention;

[0021] Figure 4 From top to bottom are a front view and a top view of a second quick-release pedal in an embodiment of the present invention;

[0022] Figure 5 From left to right in the figure are a top view and a side view of a third quick-release pedal according to an embodiment of the present invention;

[0023] Figure 6 It is a front cross-sectional view of the outer support frame in an embodiment of the present invention.

[0024] In the figure:

[0025] 1. Main frame; 1.1. Column; 1.11. First positioning hole; 1.12. Plug-in slot; 1.2. Main crossbeam;

[0026] 2. External support frame; 2.1. External support beam; 2.11. Second positioning hole; 2.12. Fourth positioning hole; 2.13. Internal thread groove; 2.2. External support diagonal rod; 2.21. Third positioning hole; 2.22. Fifth positioning hole; 2.3. Telescopic top rod; 2.4. Abutment block;

[0027] 3. First quick-release pedal; 3.1. First plate portion; 3.2. Lap block;

[0028] 4. Second quick-release pedal; 4.1. Second plate portion; 4.2. First hook;

[0029] 5. Third quick-release pedal; 5.1. Third plate portion; 5.2. Second hook;

[0030] 6. The first pin;

[0031] 7. The second pin;

[0032] 8. The third pin;

[0033] 9. The fourth pin. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] Reference Figure 1-6 The present embodiment provides a quick disassembly and assembly work platform for excavation construction in a narrow tunnel, which includes: a main frame 1, an external support frame 2, a first quick-release pedal 3, a second quick-release pedal 4 and a third quick-release pedal 5. The first quick-release pedal 3 is provided on the top of the main frame 1, and the second quick-release pedal 4 is provided below the first quick-release pedal 3; a group of external support frames 2 are respectively provided on both sides of the main frame 1, one end of the external support frame 2 is detachably connected to the main frame 1, and the other end can be extended and retracted along the radial direction of the main frame 1; each group of external support frames 2 is respectively provided with a third quick-release pedal 5.

[0037] Among them, the main frame 1 includes columns 1.1 and main beams 1.2, multiple columns 1.1 are arranged in a ring shape, the main beam 1.2 is located in the middle of the columns 1.1, and the two ends are detachably connected to adjacent columns 1.1 (for example, pin connection, clamp connection, bolt connection, etc.); the first quick-release pedal 3 is buckled on the top of the column 1.1, and the second quick-release pedal 4 is buckled on the main beam 1.2.

[0038] The method of using the above-mentioned working platform is as follows: the main frame 1 is placed in front of the drilling working surface of the flood drainage tunnel, and the external support frame 2 is installed on both sides of the main frame 1 (on both sides of the radial direction of the flood drainage tunnel section), and the length of the external support frame 2 is increased, so that the end of the external support frame 2 away from the main frame 1 is pressed against the wall of the excavated part of the flood drainage tunnel, thereby improving the support stability of the main frame 1 and the external support frame 2; then the first quick-release pedal 3, the second quick-release pedal 4 and the third quick-release pedal 5 are respectively installed on the main frame 1 and the external support frame 2, and a plurality of standing platforms are provided for the workers in front of the drilling working surface, so that multiple groups of drilling workers can drill at the same time to improve the drilling efficiency; before blasting, the first quick-release pedal 3, the second quick-release pedal 4 and the third quick-release pedal 5 are disassembled, the length of the external support frame 2 is shortened, and the external support frame 2 is separated from the wall of the flood drainage tunnel, so that the main frame 1 and the external support frame 2 can be quickly withdrawn (whether the main frame 1 and the external support frame 2 are further disassembled before being withdrawn can be determined according to the specific working conditions).

[0039] In this embodiment, the first quick-release pedal 3 includes a first plate portion 3.1 and a plug-in block 3.2. The plug-in block 3.2 is located on the bottom surface of the first plate portion 3.1 and corresponds to the column 1.1 one by one (i.e., the number of the plug-in blocks 3.2 and the column 1.1 are equal and the positions correspond). The top of the column 1.1 is provided with a plug-in slot 1.12 for installing the plug-in block 3.2. The first plate portion 3.1 is provided with a first pin 6, which penetrates the plug-in block 3.2 and then connects to the column 1.1. The second quick-release pedal 4 includes a second plate portion 4.1 and a first hook 4.2. The first hook 4.2 is located on the opposite side of the second plate portion 4.1, and its end facing away from the second plate portion 4.1 is bent downward. During installation, place the first quick-release pedal 3 on the top of the column 1.1, insert each plug-in block 3.2 into the plug-in slot 1.12 at the top of the column 1.1, and then use the first pin 6 to connect and fix the first quick-release pedal 3 and the column 1.1, place the second quick-release pedal 4 above the main beam 1.3, and hang the first hook 4.2 on a group of relative main beams 1.3. The first quick-release pedal 3 and the second quick-release pedal 4 are not only simple in structure and good in stability, but also very convenient to install and disassemble, thereby improving the installation and disassembly efficiency of the work platform.

[0040] Reference Figure 6The external support frame 2 includes an external support beam 2.1, an external support diagonal rod 2.2 and a telescopic top rod 2.3. One end of the external support beam 2.1 is connected to the main frame 1, and the other end is provided with an internal thread groove 2.13. One end of the telescopic top rod 2.3 is connected to the internal thread groove 2.13, and the other end is connected to the abutment block 2.4. The two ends of the external support diagonal rod 2.2 are respectively connected to the main frame 1 and the external support beam 2.1, and form a triangular stable structure with the outer wall of the main frame 1 and the external support beam 2.1. The external support beam 2.1 is used to directly support the third quick-release pedal 5, the external support diagonal rod 2.2 is used to improve the support stability of the third quick-release pedal 5, and the telescopic top rod 2.3 is used to adjust the distance between the abutment block 2.4 and the wall of the flood discharge tunnel, so as to provide stable support during drilling and quickly evacuate before blasting.

[0041] In addition, in the present embodiment, the main frame body 1 is provided with a plurality of first positioning holes 1.11 of different heights, and the ends of the external support beam 2.1 and the external support diagonal rod 2.2 away from the telescopic top rod 2.3 are respectively provided with a second positioning hole 2.11 and a third positioning hole 2.21. The second positioning hole 2.11 and the third positioning hole 2.21 correspond to different first positioning holes 1.11, respectively, and are used to install the second pin 7 and the third pin 8, respectively. By installing the second pin 7 and the third pin 8 in the first positioning holes 1.11 of different heights, the height of the external support frame 2 can be changed, and then the height of the third quick-release pedal 5 can be changed to adapt to different construction work requirements.

[0042] The top of the outer support diagonal rod 2.2 and the outer support cross beam 2.1 can be fixedly connected, such as by welding, or detachably connected, such as by providing a plurality of fourth positioning holes 2.12 on the outer support cross beam 2.1, the plurality of fourth positioning holes 2.12 being distributed along the extension direction of the outer support cross beam 2.1, and the top of the outer support diagonal rod 2.2 being provided with a fifth positioning hole 2.22, the fifth positioning hole 2.22 corresponding to the fourth positioning hole 2.12, for installing a fourth pin 9. When adjusting the height of the third quick-release pedal 5, the outer support frame 2 can be moved as a whole by disassembling the second pin 7 and the third pin 8, or only the height of the outer support cross beam 2.1 can be moved by disassembling the second pin 7 and the fourth pin 9. There are various ways of use, and you can choose according to the construction requirements.

[0043] In this embodiment, the third quick-release pedal 5 includes a third plate portion 5.1 and a second hook 5.2. The second hook 5.2 is located on the opposite side of the third plate portion 5.1, and its end away from the third plate portion 5.1 is bent downward. When installing, the third quick-release pedal 5 is placed above the outer support beam 2.1, and the second hook 5.2 is hung on a group of opposite outer support beams 2.1. It has a simple structure, good stability, and is very convenient to install and remove, which improves the installation and removal efficiency of the working platform.

[0044] Compared with the prior art, the beneficial effects of the present invention are as follows: through the combination of the main frame 1 and the external support frame 2, multiple drilling stations are provided for manual drilling operations in narrow tunnels, and multiple groups of personnel can stand and drill, thereby improving drilling efficiency; through the retractable external support frame 2, the working platform can be stably connected to the wall of the excavated part of the tunnel to improve the support stability, and can be quickly separated from it, thereby improving the efficiency of evacuating the working platform before blasting; in addition, the height of the external support frame 2 can be adjusted according to actual work needs to provide drilling stations of different heights, and its adjustment methods are diverse and highly applicable.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0046] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A fast disassembly and assembly work platform for excavation construction in a narrow tunnel, characterized in that: include: A main frame, wherein a first quick-release pedal is disposed on the top of the main frame, and a second quick-release pedal is disposed below the first quick-release pedal; An outer support frame, a group of the outer support frames are respectively arranged on both sides of the main frame, one end of the outer support frame is detachably connected to the main frame, and the other end can be extended and retracted along the radial direction of the main frame; each group of the outer support frames is respectively provided with a third quick-release pedal.

2. The fast disassembly and assembly working platform for excavation construction in narrow tunnels according to claim 1 is characterized in that: The main frame includes columns and main beams, wherein a plurality of the columns are arranged in parallel in a ring-shaped arrangement, the main beam is located in the middle of the columns, and both ends are detachably connected to adjacent columns; the first quick-release pedal is buckled on the top of the column, and the second quick-release pedal is buckled on the main beam.

3. The fast disassembly and assembly working platform for excavation construction in narrow tunnels according to claim 2 is characterized in that: The first quick-release pedal includes a first plate portion and a plug-in block, wherein the plug-in block is located on the bottom surface of the first plate portion and corresponds one-to-one to the column; a plug-in groove is provided on the top of the column for installing the plug-in block; a first pin is inserted in the first plate portion, and the first pin passes through the plug-in block and then connects to the column.

4. The fast disassembly and assembly working platform for excavation construction in a narrow tunnel according to claim 2, characterized in that: The second quick-release pedal includes a second plate portion and a first hook. The first hook is located on opposite sides of the second plate portion, and an end of the first hook facing away from the second plate portion is bent downward.

5. The fast disassembly and assembly working platform for excavation in narrow tunnels according to any one of claims 1 to 4, characterized in that: The external support frame includes an external support beam, an external support diagonal rod and a telescopic top rod. One end of the external support beam is connected to the main frame body, and the other end is provided with an internal thread groove. One end of the telescopic top rod is connected to the internal thread groove, and the other end is connected to the abutment block. The two ends of the external support diagonal rod are respectively connected to the main frame body and the external support beam, and the external support beam forms a triangular stable structure with the outer wall of the main frame.

6. The fast disassembly and assembly working platform for excavation construction in a narrow tunnel according to claim 5, characterized in that: The main frame is provided with a plurality of first positioning holes of different heights, and the ends of the external support cross beam and the external support diagonal rod facing away from the telescopic top rod are respectively provided with a second positioning hole and a third positioning hole, and the second positioning hole and the third positioning hole respectively correspond to different first positioning holes and are respectively used for installing a second pin and a third pin.

7. The fast disassembly and assembly working platform for excavation construction in a narrow tunnel according to claim 6, characterized in that: The outer support beam is provided with a plurality of fourth positioning holes, which are distributed along the extension direction of the outer support beam. The top end of the outer support diagonal rod is provided with a fifth positioning hole, which corresponds to the fourth positioning hole and is used for installing a fourth pin.

8. The fast disassembly and assembly working platform for excavation in narrow tunnels according to claim 6 or 7, characterized in that: The third quick-release pedal includes a third plate portion and a second hook, wherein the second hook is located on opposite sides of the third plate portion, and an end of the second hook facing away from the third plate portion is bent downward.

9. A method for constructing a fast disassembly and assembly work platform for excavation in a narrow tunnel according to any one of claims 1 to 8, characterized in that: Includes steps: Before drilling: place the main frame in front of the drilling operation surface, install the external support frames on both sides of the main frame, increase the length of the external support frames, and make the ends of the external support frames away from the main frame close to the wall of the excavated part of the flood drainage tunnel; install the first quick-release pedal, the second quick-release pedal and the third quick-release pedal on the main frame and the external support frames respectively; Before blasting: remove the first quick-release pedal, the second quick-release pedal and the third quick-release pedal, shorten the length of the external support frame, separate the external support frame from the wall of the flood drainage tunnel, and remove the main frame and the external support frame.

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