A multi-functional tunnel construction jumbo and construction method

Abstract

The present invention discloses a multifunctional tunnel construction trolley and a construction method, which includes a top cross beam and a bottom cross beam. The top cross beams are connected by top longitudinal beams. The top cross beam is also connected to the bottom cross beam by a first column. A number of intermediate cross beams are arranged at intervals between the bottom cross beam and the top cross beam. One end of a cantilever is connected to the first column. At least one positioning steel plate is vertically arranged on the cantilever and perpendicular to the cantilever. A telescopic arm extends into the positioning steel plate. A number of positioning holes are formed on the cantilever. The telescopic arm passing through the positioning steel plate is detachably connected to any positioning hole. When the construction trolley is under construction, a steel mesh is laid between adjacent telescopic arms, between adjacent top longitudinal beams, and between adjacent cantilevers. The present invention can expand the construction operation platform and meet the requirements of different tunnel diameters without adding too many additional resources.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunneling engineering, and particularly relates to a multi-functional tunnel construction trolley and a construction method. Background Art

[0002] Common tunnel construction trolleys can be divided into three types: excavation trolleys, support trolleys, lining trolleys, and repair trolleys. In the design process of most tunnels, the cross-section of the tunnel is not constant, and a large amount of air, water, and electricity supply is involved during the construction process, resulting in an increasing functional requirement for the construction platform. Currently, the commonly used tunnel excavation and support trolleys on the market all have the problem that the trolleys for unconventional tunnel sections (transition sections) cannot cover all construction operation surfaces, thus leading to low construction efficiency. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a multi-functional tunnel construction trolley and a construction method, which solve the problems that the current construction trolley cannot simultaneously meet the construction operation surfaces of conventional tunnel sections and unconventional tunnel sections, and has low construction efficiency.

[0004] To achieve the above object, the present invention provides the following technical solution: A multi-functional tunnel construction trolley includes at least two top crossbeams and at least two bottom crossbeams. The top crossbeams are connected by top longitudinal beams, and the top crossbeams are also connected to the bottom crossbeams by first columns. A number of intermediate crossbeams are arranged at intervals between the bottom crossbeams and the top crossbeams. One end of a cantilever is connected to the first column, and at least one positioning steel plate is perpendicularly arranged on the cantilever. A telescopic arm extends into the positioning steel plate, and a number of positioning holes are formed in the cantilever. The telescopic arm passing through the positioning steel plate is detachably connected to any positioning hole.

[0005] When the construction trolley is in construction, wire mesh sheets are laid between adjacent telescopic arms, between adjacent top longitudinal beams, and between adjacent cantilevers.

[0006] Further, a pin hole is formed at one end of the telescopic arm, and the pin hole is connected to any positioning hole by a safety pin.

[0007] After one end of the telescopic arm passes through the positioning steel plate and is fixedly connected to the cantilever, the telescopic arm is inclined. From the bottom crossbeam to the top crossbeam direction, the end of the telescopic arm that does not pass through the positioning steel plate is higher than the end of the telescopic arm that passes through the positioning steel plate.

[0008] Further, air supply pipes are arranged on the top longitudinal beam and the first column near the tunnel air supply, and an air outlet gate and an air inlet gate are arranged on the air supply pipe.

[0009] Further, water supply pipes are also arranged on the top longitudinal beam and the first upright column near the water supply point of the tunnel. Water outlet gates and water inlet gates are arranged on the water supply pipes.

[0010] Further, an electrical control cabinet is connected to the middle cross beam. The power supply lines on the electrical control cabinet are connected to electrical equipment through a construction trolley, and the external power supply line of the electrical control cabinet is connected to an external power supply.

[0011] Further, a second upright column is connected to the top longitudinal beam. The second upright column is also connected to a construction cross beam. The construction cross beams are connected by construction longitudinal beams. The length of the construction longitudinal beam is less than the length of the top longitudinal beam.

[0012] When the construction trolley is working, steel mesh sheets are laid between adjacent construction longitudinal beams and between adjacent top longitudinal beams.

[0013] Further, strengthening longitudinal beams are also arranged on the top longitudinal beam. The strengthening longitudinal beams are connected by strengthening cross beams. The strengthening cross beams are also connected to several top longitudinal beams.

[0014] Further, a safety guardrail is detachably arranged on the top longitudinal beam at the first position. The unconnected end of the safety guardrail is in an arc shape. The safety guardrail is higher than the construction longitudinal beam and the construction cross beam.

[0015] A ladder is also arranged on the first upright column. The ladder includes ladder vertical poles and ladder cross bars. The ladder vertical poles are connected by several ladder cross bars. The climbing surface of the ladder is inclined.

[0016] Further, several hooks are also arranged on the first upright column.

[0017] Column protection members are arranged at the included angle between the first upright column and the bottom cross beam. Diagonal braces are arranged between the cantilever and the first upright column and between the top longitudinal beam and the first upright column.

[0018] The present invention also provides a construction method for a multi-functional tunnel construction trolley, including the following steps: when the construction trolley is in the regular section of the tunnel, steel mesh sheets are laid between adjacent cantilevers and between adjacent top longitudinal beams, and construction workers directly carry out construction operations on the steel mesh sheets on the cantilevers and on the steel mesh sheets on the top longitudinal beams.

[0019] When the construction trolley is in the non-regular section of the tunnel, the telescopic arm is pulled out from the cantilever. When the length of the telescopic arm meets the length requirements for construction operations, the telescopic arm is fixed through any positioning hole of the cantilever, and then steel mesh sheets are laid between adjacent telescopic arms, between adjacent cantilevers, and between adjacent top longitudinal beams to carry out construction operations on the non-regular section of the tunnel.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] The present invention provides a multi-functional tunnel construction trolley, which constructs a brand-new construction trolley. By setting a cantilever on the first column, the construction operations of the construction trolley in the conventional tunnel section can be realized. When the construction trolley is located in the non-conventional tunnel section of the tunnel, i.e., the transition section of the tunnel, the positions of the telescopic arm and the positioning holes can be adjusted. The telescopic arm is extended and re-fixed on the cantilever. When the tunnel diameter increases, the present invention can adapt to the increase in the tunnel diameter, expand the construction operation platform, increase the construction operation radius, and have a wider application range. Without adding too many additional resources, the requirements for different tunnel diameters are achieved. The construction trolley provided by the present invention is simple to manufacture, convenient to operate, has strong practicability, obvious economic effects, and broad application and promotion prospects in the industry.

[0022] Furthermore, the present invention completes the connection and fixation of the telescopic arm and the cantilever through safety pins, which is convenient and fast. Moreover, after the telescopic arm and the cantilever are connected and fixed, they are inclined, which improves the supporting force of the telescopic arm, increases the safety of construction operations, and protects the operation safety of construction workers.

[0023] Furthermore, the construction trolley of the present invention is respectively provided with a gas supply pipeline and a water supply pipeline near the tunnel gas supply and the tunnel water supply, which reduces the laying of the water supply pipeline and the gas supply pipeline during the construction process. The present invention realizes the transformation of functions under different requirements, solves the problem that the current construction trolley only serves as a support structure and has a single function, integrates the gas supply and water supply systems of the vehicle body, and improves the equipment utilization rate and construction efficiency.

[0024] Furthermore, the power supply line on the electrical control cabinet can be connected to the electrical equipment through the frame of the overall construction trolley of the present invention, which solves the problems of intricate power supply line layout, chaotic construction site layout, and low construction efficiency during the construction process. The construction site is cleaner, the construction efficiency is higher, and the construction trolley of the present invention integrates a water supply system, a gas supply system, and a power supply system, and can meet the supply of various factors during the tunnel construction process.

[0025] Furthermore, a construction cross beam and a construction longitudinal beam are also provided on the top longitudinal beam of the present invention, which form a construction operation surface for the top of the tunnel by the construction trolley. The present invention can not only meet the construction of the tunnel transition section but also construct the tunnel in all directions, and has a larger construction operation surface.

[0026] Furthermore, a strengthening longitudinal beam is also provided on the top longitudinal beam of the present invention, which increases the overall stability of the construction trolley. Moreover, during the tunnel excavation and support construction process, a bulldozer or other equipment is used to push the strengthening longitudinal beam or the strengthening cross beam to move the present invention, avoiding damage to the main components of the construction trolley.

[0027] Furthermore, a safety guardrail is detachably connected to the top longitudinal beam of the present invention. The safety guardrail supports the tunnel and protects the safety of construction workers, with a higher safety factor. Moreover, a ladder is provided on the first column, allowing construction workers to reach any cantilever or the construction longitudinal beam conveniently and quickly. At the same time, the climbing surface of the ladder is inclined to ensure the safety of construction workers when getting on and off the trolley.

[0028] Furthermore, several hooks are provided on the construction trolley of the present invention, providing a placement position for small tools after construction and ensuring the cleanliness of the construction site. At the same time, column protection members are provided at the angles between the first column and the bottom cross beam, and diagonal braces are provided between the cantilever and the first column, as well as between the top longitudinal beam and the first column, increasing the structural stability of the construction trolley of the present invention and having a higher safety performance.

[0029] The present invention also provides a construction method for a multi-functional tunnel construction trolley. In a conventional tunnel section, a steel mesh is directly laid between adjacent cantilevers and between adjacent top longitudinal beams for construction. In an unconventional tunnel section, the telescopic arm is pulled out a certain distance from the cantilever, then the telescopic arm and the cantilever are fixed, and finally a steel mesh is laid between adjacent telescopic arms, between adjacent cantilevers, and between adjacent top longitudinal beams to carry out construction in the unconventional tunnel section. This enables the construction trolley to meet the construction requirements of various tunnel sections, without limitations, and can follow the change of the tunnel section to expand the construction platform and increase the construction operation radius. The construction method provided by the present invention is simple and easy to implement, convenient to operate, highly practical, and has good construction prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 is a front view schematic diagram of the present invention;

[0032] Figure 3 is Figure 2 a side view schematic diagram of;

[0033] Figure 4 is Figure 2 a top view schematic diagram of;

[0034] Figure 5 is Figure 2 a bottom view schematic diagram of;

[0035] Figure 6 is a schematic diagram of the water supply system in the present invention;

[0036] Figure 7 is a schematic diagram of the power supply system of the present invention;

[0037] Figure 8Schematic structural diagram of the air supply system of the present invention;

[0038] Figure 9 Partial enlarged structural schematic diagram of the cantilever of the present invention;

[0039] Figure 10 Schematic structural diagram of the steel mesh sheet of the present invention;

[0040] Figure 11 Schematic structural diagram of the safety guardrail in the present invention;

[0041] In the drawings: 1 - bottom cross beam, 2 - top cross beam, 3 - middle cross beam, 4 - top longitudinal beam, 5 - cantilever, 6 - construction cross beam, 7 - construction longitudinal beam, 8 - second column, 9 - reinforcing longitudinal beam, 10 - reinforcing cross beam, 11 - column guard, 12 - hook, 13 - first column, 14 - diagonal brace, 15 - ladder vertical pole, 16 - ladder horizontal bar, 17 - water supply pipe, 18 - water inlet gate, 19 - water outlet gate, 20 - electrical control cabinet, 21 - power supply wire, 22 - external power supply wire, 23 - air supply pipe, 24 - air outlet gate, 25 - air inlet gate, 26 - telescopic arm, 27 - positioning steel plate, 28 - safety pin, 29 - steel mesh sheet, 30 - safety guardrail. Detailed implementation manners

[0042] The present invention will be further described below in conjunction with the drawings and detailed implementation manners.

[0043] As Figure 1 and Figure 3 shown, the present invention provides a construction trolley applicable to both conventional tunnel sections and unconventional tunnel sections, including two bottom cross beams 1 and two top cross beams 2. The bottom cross beam 1 and the top cross beam 2 are welded and connected by a plurality of first columns 13 arranged in sequence. The top cross beams 2 are welded and connected by a plurality of second columns 8 arranged in sequence. The two top cross beams 2 form the top construction working surface of the construction trolley, and one top cross beam 2 and one bottom cross beam 1 form the side wall construction working surface of the construction trolley. The bottom cross beam 1, the top cross beam 2, the first column 13 and the second column 8 form the main frame structure of the construction trolley.

[0044] Specifically, as Figure 9As shown, a cantilever 5 is welded to the first upright column 13. The cantilever 5 is the lateral construction platform support system of the construction trolley of the present invention. One end of the cantilever 5 is welded to the first upright column 13. In this embodiment, the cantilever 5 is of I-beam steel structure. A positioning steel plate 27 is welded to the cantilever 5, and the positioning steel plate 27 is perpendicular to the cantilever 5. Preferably, there are several positioning steel plates 27. In this embodiment, two positioning steel plates 27 are adopted. Openings are provided on the two positioning steel plates 27. One end of the telescopic arm 26 extends into the openings of the positioning steel plate 27. A pin hole is provided at the end of the telescopic arm 26 passing through the two positioning steel plates 27. Several positioning holes are provided on the cantilever 5. After one end of the telescopic arm 26 passes through the two positioning steel plates 27, the safety pin 28 is inserted into the pin hole of the telescopic arm 26 and any positioning hole, so that the positions of the telescopic arm 26 and the cantilever 5 are fixed. The telescopic arm 26 realizes the adjustment of the length extending out of the cantilever 5 by inserting the safety pin 28 into different positioning holes, forming the lateral retractable construction platform of the construction trolley in the present invention. Preferably, in the direction from the bottom cross beam 1 to the top cross beam 2, the openings on the positioning steel plate 27 are higher than the positioning holes. The openings of the multiple positioning steel plates 27 are successively reduced from the unfixed end of the cantilever 5 to the fixed end of the cantilever 5. After the telescopic arm 26 passes through the positioning steel plate 27 and the cantilever 5 and is fixed, the telescopic arm 26 is inclined. In the direction from the bottom cross beam 1 to the top cross beam 2, the end of the telescopic arm 26 at the unfixed end of the cantilever 5 is higher than the end of the telescopic arm 26 passing through the positioning steel plate 27, so that the steel mesh 29 will not slip during the construction process, ensuring the safety of the construction. The structure of the steel mesh is as Figure 10 shown.

[0045] Specifically, during the construction of the regular tunnel section, the steel mesh 29 is directly laid between adjacent cantilevers 5 and between adjacent top longitudinal beams 4. Construction workers carry out construction operations on the steel mesh 29 on the cantilever 5 and the steel mesh 29 on the top longitudinal beam 4. During the construction of the non-regular tunnel section, the safety pin 28 is pulled out, and the telescopic arm 26 is extended a certain distance out of the cantilever 5 to make the telescopic arm 26 close to the side wall of the tunnel. When the extended length of the telescopic arm 26 meets the construction requirements, the telescopic arm 26 is fixed by inserting the safety pin 28 into the pin hole of the telescopic arm 26 and the positioning hole of the cantilever 5, and then the steel mesh 29 is laid between adjacent telescopic arms 26, between adjacent cantilevers 5, and between adjacent top longitudinal beams 4 for construction operations.

[0046] In this embodiment, as Figure 8 shown, an air supply system is also provided on the construction trolley. An air supply pipeline is provided on the top longitudinal beam 4 and the first upright column 13 close to the air supply place of the tunnel. An air outlet gate 24 and an air inlet gate 25 are provided on the air supply pipeline. Both the air outlet gate 24 and the air inlet gate 25 are provided with control gate valves. The air inlet gate 25 is close to the water supply surface of the tunnel, and the gas-using equipment can be plugged and used immediately.

[0047] In this embodiment, as Figure 2 andFigure 6 As shown in the figure, a water supply system is also provided on the construction trolley. A water supply pipe 17 is provided on the top longitudinal beam 4 and the first column 13 near the water supply point of the tunnel. An outlet sluice 19 and an inlet sluice 18 are provided on the water supply pipe 17. Both the outlet sluice 19 and the inlet sluice 18 are equipped with control valves. The outlet sluice 19 facilitates the plug-and-play of various water-using devices. In this embodiment, the water supply system and the air supply system are provided on the same top longitudinal beam 4 and the first column 13, and the water supply system and the air supply system are respectively arranged on the front and back sides of the same top longitudinal beam 4 and the first column 13.

[0048] In this embodiment, as Figure 3 and Figure 7 shown, a power supply system is also provided on the frame of the construction trolley. An electrical control cabinet 20 is provided on the middle cross beam 3. The power supply line 21 of the electrical control cabinet 20 is connected to the electrical equipment, and the external power supply line 22 of the electrical control cabinet 20 is connected to the external power supply. Among them, the power supply line 21 can be laid on the frame of the construction trolley, so that the gas, water and electricity of the construction trolley in the present invention are arranged in an orderly manner, the construction site is reasonably arranged, and the construction efficiency is improved.

[0049] In this embodiment, as Figure 1 and Figure 2 shown, the first column 13 is also provided with a ladder. The ladder of the present invention includes ladder vertical poles 15 and ladder cross bars 16. The ladder vertical poles 15 are connected by the ladder cross bars 16, which facilitates the construction workers to get on and off the trolley and climb to the top of the trolley or any cantilever 5. The climbing surface of the ladder is inclined, which is convenient for the construction workers to climb and reduces the danger.

[0050] In this embodiment, as Figure 1 and Figure 3 shown, a second column 8 is also welded on the top longitudinal beam 4. A construction cross beam 6 is also welded on the second column 8. The construction cross beams 6 are welded by construction longitudinal beams 7. The length of the construction longitudinal beam 7 is less than the length of the top longitudinal beam 4. When constructing the top of the tunnel, the construction workers directly lay the steel mesh 29 between the adjacent construction longitudinal beams 7, and the construction workers directly construct the top of the tunnel on the steel mesh 29 of the construction longitudinal beam 7; preferably, as Figure 11 shown, a safety guardrail 30 is detachably connected to the first construction longitudinal beam 7. The unconnected end of the safety guardrail 30 is arc-shaped. The safety guardrail 30 is used to support the top of the tunnel. The height of the safety guardrail 30 is higher than that of the construction longitudinal beam 7 and the construction cross beam 6, which increases the construction safety.

[0051] In the preferred embodiment of this embodiment, as Figure 1 、 Figure 4 and Figure 5As shown, a reinforcing longitudinal beam 9 is also welded to the top longitudinal beam 4. The reinforcing longitudinal beam 9 and the first column 13 are respectively arranged on opposite surfaces of the top longitudinal beam 4. The reinforcing longitudinal beams 9 are welded and connected by reinforcing cross beams 10. The reinforcing cross beams 10 are welded to the top longitudinal beam 4. During the tunneling (tunnel) excavation and support construction process, a bulldozer or other equipment is used to push the reinforcing longitudinal beam 9 forward to move the trolley, avoiding damage to the main components of the construction trolley.

[0052] In the preferred embodiment of this embodiment, as Figure 1 shown, a column protector 11 is provided at the angle between the bottom cross beam 1 and the first column 13, a diagonal brace 14 is provided at the angle between the cantilever 5 and the first column 13, and a diagonal brace 14 is also provided at the angle between the top longitudinal beam 4 and the first column 13, increasing the stability of the overall construction trolley.

[0053] In the preferred embodiment of this embodiment, a hook 12 is also welded to the first column 13, providing a placement position for small construction tools after construction and ensuring the cleanliness of the construction site.

[0054] The specific construction steps when using a multifunctional tunnel construction trolley provided by the present invention for construction are as follows:

[0055] When the construction trolley is in the regular section of the tunnel, a steel mesh 29 is laid between adjacent cantilevers 5, between adjacent top longitudinal beams 4, and between adjacent construction longitudinal beams 7. Construction workers directly carry out construction operations on the steel mesh 29 on the cantilever 5, on the steel mesh 29 on the top longitudinal beam 4, and on the steel mesh 29 of the construction longitudinal beam 4.

[0056] When the construction trolley is in the non-regular section of the tunnel, the telescopic arm 26 is pulled out from the cantilever 5. When the length of the telescopic arm 26 meets the length requirements for construction operations, any positioning hole of the cantilever 5 and the pin hole of the telescopic arm 26 are fixed by a safety pin 28. Then, a steel mesh 29 is laid between adjacent telescopic arms 26, between adjacent cantilevers 5, between adjacent top longitudinal beams 4, and between adjacent construction longitudinal beams 7 to carry out construction operations on the non-regular section of the tunnel.

[0057] Among them, water-using equipment is connected through the water supply system on the construction trolley, power-using equipment is connected through the power supply system, and gas-using equipment is connected through the gas supply system. The pipelines of the water supply system, power supply system, and gas supply system are laid on the frame of the construction trolley, reducing the laying of water supply, power supply, and gas pipelines during the construction process. At the same time, the layout of the water supply, power supply, and gas pipelines is more reasonable, the construction site is cleaner, and the construction efficiency is improved.

[0058] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the technical field can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope described in the claims.

Claims

1. A multi-functional tunnel construction trolley, characterized in that The invention comprises at least two top cross beams (2) and at least two bottom cross beams (1), wherein the top cross beams (2) are connected to each other via a top longitudinal beam (4), and the top cross beam (2) is also connected to the bottom cross beam (1) via a first column (13), and a plurality of intermediate cross beams (3) are arranged at intervals between the bottom cross beam (1) and the top cross beam (2), and the first column (13) is connected to one end of a cantilever (5), and at least one positioning steel plate (27) is provided on the cantilever (5) and perpendicular to the cantilever (5), and a telescopic arm (26) is extended into the positioning steel plate (27), and the cantilever (5) is provided with a plurality of positioning holes, and the telescopic arm (26) passing through the positioning steel plate (27) is detachably connected to any positioning hole; when the construction trolley is in operation, steel meshes (29) are laid between adjacent telescopic arms (26), between adjacent top longitudinal beams (4), and between adjacent cantilever arms (5); One end of the telescopic arm (26) is provided with a pin hole, and the pin hole is connected to any positioning hole via a safety pin (28); after one end of the telescopic arm (26) passes through the positioning steel plate (27) and is connected and fixed to the cantilever (5), from the bottom crossbeam (1) to the top crossbeam (2), the end of the telescopic arm (26) that does not pass through the positioning steel plate (27) is higher than the end of the telescopic arm (26) that passes through the positioning steel plate (27); An air supply pipe (23) is provided on the top longitudinal beam (4) and the first column (13) near the air supply point of the tunnel, and an air outlet gate (24) and an air inlet gate (25) are provided on the air supply pipe (23); A water supply pipe (17) is also provided on the top longitudinal beam (4) and the first column (13) at the water supply point near the tunnel, and a water outlet gate (19) and a water inlet gate (18) are provided on the water supply pipe (17).

2. The multifunctional tunnel construction trolley according to claim 1, characterized in that, An electrical control cabinet (20) is connected to the middle crossbeam (3), a power supply line (21) on the electrical control cabinet (20) is connected to an electrical device, and an external power supply line (22) of the electrical control cabinet (20) is connected to an external power source.

3. A multifunctional tunnel construction trolley according to claim 1, characterized in that: The top longitudinal beam (4) is connected to a second column (8), and the second column (8) is further connected to a construction beam (6). The construction beams (6) are connected to each other via a construction longitudinal beam (7), and the length of the construction longitudinal beam (7) is less than the length of the top longitudinal beam (4); When the construction trolley is in operation, steel mesh sheets (29) are laid between adjacent construction longitudinal beams (7) and between adjacent top longitudinal beams (4).

4. A multifunctional tunnel construction trolley according to claim 1, characterized in that, A reinforcing longitudinal beam (9) is also provided on the top longitudinal beam (4), and the reinforcing longitudinal beams (9) are connected to each other via a reinforcing cross beam (10), and the reinforcing cross beam (10) is also connected to a plurality of top longitudinal beams (4).

5. A multifunctional tunnel construction trolley according to claim 4, characterized in that: A detachable safety guardrail (30) is provided on the top longitudinal beam (4) at the first position, wherein the unconnected end of the safety guardrail (30) is an arc-shaped structure, and the safety guardrail (30) is higher than the construction longitudinal beam (7) and the construction cross beam (6); A ladder is also provided on the first upright column (13). The ladder includes ladder upright poles (15) and ladder cross bars (16). The ladder upright poles (15) are connected by a plurality of ladder cross bars (16). The climbing surface of the ladder is inclined.

6. The multifunctional tunnel construction trolley according to claim 1, characterized in that: A plurality of hooks (12) are also provided on the first upright column (13); Column guards (11) are provided at the angles between the first upright column (13) and the bottom cross beam (1). Diagonal braces (14) are provided between the cantilever (5) and the first upright column (13), and between the top longitudinal beam (4) and the first upright column (13).

7. A construction method for a multifunctional tunnel construction trolley according to any one of claims 1 to 6, characterized in that: It includes the following steps: When the construction trolley is in the regular section of the tunnel, a steel mesh sheet (29) is laid between adjacent cantilevers (5) and between adjacent top longitudinal beams (4). Construction workers directly carry out construction operations on the steel mesh sheet (29) on the cantilever (5) and on the steel mesh sheet (29) on the top longitudinal beam (4). When the construction trolley is in the non-regular section of the tunnel, the telescopic arm (26) is pulled out from the cantilever (5). When the length of the telescopic arm (26) meets the length requirements for construction operations, the telescopic arm (26) is fixed through any positioning hole of the cantilever (5). Then, a steel mesh sheet (29) is laid between adjacent telescopic arms (26), between adjacent cantilevers (5), and between adjacent top longitudinal beams (4), and construction operations are carried out on the non-regular section of the tunnel.

Images