Inverted arch slip form device for open cut tunnel

Abstract

The invention relates to the field of tunnel construction, in particular to an open-cut tunnel inverted arch sliding formwork device which comprises a span beam and further comprises a driving mechanism arranged at the bottom of the span beam and used for driving the span beam to walk, a supporting mechanism arranged on the span beam and used for supporting a sliding formwork to move, and a formwork moving mechanism arranged on the span beam and used for supporting the sliding formwork to move. And the mold moving mechanism is arranged on the supporting mechanism and is used for moving the mold. According to the inverted arch slip form device for the open-cut tunnel, the swing plate is pushed by the propelling air cylinder to swing obliquely, the positions of the left wing formwork and the right wing formwork can be adjusted, the height of the left wing formwork and the right wing formwork can be adjusted through the left wing air cylinder and the right wing air cylinder, and adjustment according to construction requirements is facilitated; the left wing formwork and the right wing formwork can be directly in butt joint with the middle formwork to form a sealed pouring cavity, concrete can be continuously poured into the sealed cavity along the upper edges of the left wing formwork and the right wing formwork, and efficient and high-precision construction is facilitated.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, in particular to an open-cut tunnel invert sliding formwork device. Background Art

[0002] Cut and cover method refers to an underground engineering construction method in which the ground is first dug up, lining is built in the open air, and then covered and backfilled. It is mostly used for shallow buried tunnels. Cut and cover method is the most basic and most commonly used construction method in soft soil underground engineering construction. The invert is a reverse arch structure set at the bottom of the tunnel to improve the stress conditions of the upper support structure. It is one of the main components of the tunnel structure. On the one hand, it can effectively transfer the stratum pressure above the tunnel through the tunnel side wall structure or the load on the road surface to the underground, and it can also effectively resist the reaction force from the stratum below the tunnel. The invert and secondary lining constitute the whole tunnel and increase the structural stability.

[0003] Sliding formwork construction is a construction technology for cast-in-place concrete projects. During slipform construction, the formwork is assembled at one time, and an operating platform for construction workers is set up on it. Hydraulic or other lifting devices are used from bottom to top to perform synchronous sliding and lifting and continuous operations while pouring concrete along the surface of the cast-in-place concrete. Compared with conventional construction methods, this construction technology has the advantages of fast construction speed, good overall structural performance, high degree of mechanization, saving labor and materials required for formwork and scaffolding, and the formwork can be dismantled and flexibly assembled more conveniently and reused. The combination of slipforms and other construction technologies (such as prefabrication, masonry or other formwork methods) can create conditions for simplifying construction technology and better achieve comprehensive economic benefits.

[0004] In the traditional open-cut tunnel arch sliding formwork device, after pouring concrete between the middle mold and the inner wall of the tunnel, it is necessary to wait for the concrete to form before moving the mold. The waiting time is long, which is not conducive to efficient construction. Secondly, after completing the concrete pouring of a part, the formwork needs to be moved with a large displacement to align it with the edge of the solidified concrete before pouring the concrete. The repeated and cumbersome movement of the formwork is not conducive to high-precision and efficient construction.

[0005] In view of this, we propose an open-cut tunnel invert slipform device to solve the problems existing in the existing devices. Summary of the invention

[0006] The purpose of the present invention is to provide an open-cut tunnel inverted arch sliding formwork device to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: an open-cut tunnel inverted arch sliding formwork device, including a span beam, and also including: A driving mechanism is provided at the bottom of the cross beam 1 and is used to drive the cross beam 1 to move. The driving mechanism includes a transmission rod 2, a driving motor 3, and a guide wheel 4. Driving motors 3 are fixed at the four corners of the bottom of the cross beam 1. Transmission rods 2 are also inserted and connected through bearings at the four corners of the bottom of the cross beam 1. A guide wheel 4 is fixed at the inner end of the transmission rod 2; A supporting mechanism is provided on the cross beam 1 and is used to support the sliding form to move. The supporting mechanism includes a vertical main support plate 5, a horizontal hanging plate 6, a swing plate 9, a bottom support plate 14, a propulsion cylinder 15, a guide roller frame 16, and a guide roller 17. The vertical main support plate 5 is welded and fixed at the center of the upper surface of the cross beam 1. A horizontal hanging plate 6 is welded and fixed on the side of the front surface of the vertical main support plate 5. Two swing plates 9 are provided at the bottom of the horizontal hanging plate 6. A bottom support plate 14 is also welded and fixed at the bottom of the horizontal hanging plate 6. A propulsion cylinder 15 is fixed on the bottom support plate 14. A guide roller frame 16 is fixed at the extending end of the propulsion cylinder 15, and a guide roller 17 is provided on the guide roller frame 16; A mold moving mechanism is provided on the supporting mechanism and is used to move the mold. The mold moving mechanism includes a middle cylinder 7, a middle template 8, a left wing cylinder 10, a left wing template 11, a right wing cylinder 12, and a right wing template 13. The middle cylinder 7 is fixed at the center of the bottom of the horizontal hanging plate 6. A middle template 8 is fixed at the extending end of the middle cylinder 7. A left wing cylinder 10 is fixed on the left swing plate 9. A left wing template 11 is fixed at the extending end of the left wing cylinder 10. A right wing cylinder 12 is fixed on the right swing plate 9. A right wing template 13 is fixed at the extending end of the right wing cylinder 12.

[0007] Preferably, the output shaft of the driving motor is fixedly connected to the outer end of the transmission rod.

[0008] Preferably, the guide roller frames respectively abut against the bottoms of the corresponding swing plates, and the mold moving mechanism is provided on the supporting mechanism.

[0009] Preferably, the middle template, the left wing template, and the right wing template are all located obliquely above the front side of the cross beam.

[0010] Preferably, the middle cylinder is located between the left wing cylinder and the right wing cylinder. The extending end of the middle cylinder is vertically downward, and the left wing cylinder and the right wing cylinder are arranged obliquely.

[0011] Preferably, the middle template, the left wing template, and the right wing template are all of arc-shaped structures.

[0012] Preferably, the upper end of the swing plate is movably connected to the horizontal hanging plate through a hinge.

[0013] Preferably, a reinforcing plate is also welded and fixed on the side of the bottom of the bottom support plate, and the propulsion cylinder is also fixed on the reinforcing plate.

[0014] Preferably, a control console is further provided on the transverse suspension plate.

[0015] Compared with the prior art, the beneficial effects of the present invention.

[0016] In the present invention, swing plates are respectively arranged on both sides of the middle template, a left-wing cylinder and a right-wing cylinder are respectively arranged on the two swing plates, a left-wing template is arranged on the left-wing cylinder, and a right-wing template is arranged on the right-wing cylinder. With the structural design of the combination of three groups of templates, compared with the traditional construction with a single template, the construction efficiency can be greatly improved.

[0017] In the present invention, a bottom support plate, a propulsion cylinder, a guide roller frame and a guide roller combination are arranged below the transverse suspension plate. The propulsion cylinder is used to push the swing plate to swing obliquely, so as to adjust the positions of the left-wing template and the right-wing template, and the left-wing cylinder and the right-wing cylinder can also be used to adjust their heights, which is helpful for adjustment according to construction requirements. After pouring concrete between the middle template and the tunnel inner wall, the left-wing template and the right-wing template can be directly butted with the middle template to form a sealed pouring cavity, and concrete can be continuously poured into the sealed cavity along the upper edges of the left-wing template and the right-wing template. With this construction method, large-area pouring can be carried out without swinging the middle template multiple times, and the waiting time is short, which is beneficial to high-efficiency and high-precision construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic structural diagram when the left-wing template and the right-wing template of the present invention are unfolded; Figure 3 is a schematic structural diagram when the middle template of the present invention is raised; Figure 4 For the present invention Figure 1 is an enlarged schematic structural diagram of part A in the present invention.

[0019] In the figure: 1, cross beam; 2, transmission rod; 3, drive motor; 4, guide rail wheel; 5, vertical main support plate; 6, transverse suspension plate; 7, middle cylinder; 8, middle template; 9, swing plate; 10, left-wing cylinder; 11, left-wing template; 12, right-wing cylinder; 13, right-wing template; 14, bottom support plate; 15, propulsion cylinder; 16, guide roller frame; 17, guide roller; 18, hinge; 19, reinforcement plate; 20, control console. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 4 , the present invention provides a technical solution: an open-cut tunnel invert slip form device, including a cross beam 1, and further including: A driving mechanism, and the driving mechanism is arranged at the bottom of the cross beam 1 and used to drive the cross beam 1 to move. The driving mechanism includes a transmission rod 2, a driving motor 3, and a guide rail wheel 4. Driving motors 3 are fixed at the four corners of the bottom of the cross beam 1. Transmission rods 2 are also inserted and connected through bearings at the four corners of the bottom of the cross beam 1. Guide rail wheels 4 are fixed at the inner ends of the transmission rods 2; A supporting mechanism, and the supporting mechanism is arranged on the cross beam 1 and used to support the movement of the slip form. The supporting mechanism includes a vertical main support plate 5, a horizontal suspension plate 6, a swing plate 9, a bottom support plate 14, a propulsion cylinder 15, a guide roller frame 16, and guide rollers 17. The vertical main support plate 5 is welded and fixed at the center of the upper surface of the cross beam 1. A horizontal suspension plate 6 is welded and fixed on the side of the front surface of the vertical main support plate 5. Two swing plates 9 are arranged at the bottom of the horizontal suspension plate 6. A bottom support plate 14 is also welded and fixed at the bottom of the horizontal suspension plate 6. A propulsion cylinder 15 is fixed on the bottom support plate 14. A guide roller frame 16 is fixed at the extending end of the propulsion cylinder 15, and guide rollers 17 are arranged on the guide roller frame 16; A mold moving mechanism, and the mold moving mechanism is arranged on the supporting mechanism and used to move the mold. The mold moving mechanism includes a middle cylinder 7, a middle template 8, a left wing cylinder 10, a left wing template 11, a right wing cylinder 12, and a right wing template 13. The middle cylinder 7 is fixed at the center of the bottom of the horizontal suspension plate 6. A middle template 8 is fixed at the extending end of the middle cylinder 7. A left wing cylinder 10 is fixed on the left swing plate 9. A left wing template 11 is fixed at the extending end of the left wing cylinder 10. A right wing cylinder 12 is fixed on the right swing plate 9. A right wing template 13 is fixed at the extending end of the right wing cylinder 12.

[0022] In this embodiment, the output shaft of the driving motor 3 is fixedly connected to the outer end of the transmission rod 2, which is used to drive the device to travel, facilitating large-area concrete pouring construction at the bottom of the tunnel.

[0023] In this embodiment, the guide roller frame 16 abuts against the bottom of the corresponding swing plate 9 on each side. The mold moving mechanism is arranged on the supporting mechanism, facilitating the pouring of concrete into the sealed cavity formed in the middle.

[0024] In this embodiment, the middle template 8, the left-wing template 11, and the right-wing template 13 are all located obliquely above the front side of the cross beam 1, which facilitates adjusting the pouring position of the concrete according to requirements. It is not necessary to swing the middle template 8 multiple times for large-area pouring, and the waiting time is short, which is beneficial to efficient and high-precision construction.

[0025] In this embodiment, the middle cylinder 7 is located between the left-wing cylinder 10 and the right-wing cylinder 12. The extending end of the middle cylinder 7 is vertically downward, and the left-wing cylinder 10 and the right-wing cylinder 12 are arranged obliquely, which facilitates high-precision and rapid docking.

[0026] In this embodiment, the middle template 8, the left-wing template 11, and the right-wing template 13 are all of arc-shaped structures, forming a sealed pouring cavity to ensure the smoothness of the concrete at the bottom of the tunnel.

[0027] In this embodiment, the upper end of the swing plate 9 is movably connected to the transverse suspension plate 6 through a hinge 18, which facilitates swinging and adjusting the left-wing template 11 and the right-wing template 13.

[0028] In this embodiment, a reinforcing plate 19 is also welded and fixed on the side of the bottom of the bottom support plate 14, and the propulsion cylinder 15 is also fixed on the reinforcing plate 19 to further fix the propulsion cylinder 15 and increase the overall stability.

[0029] In this embodiment, a control console 20 is also provided on the transverse suspension plate 6 for controlling the operation of the device.

[0030] Advantages of the present invention: Rails are laid on both sides of the dug tunnel, and the open-cut tunnel invert slip form device is erected on the rails. The two rail wheels 4 on the right side are placed on the right rail, and the two rail wheels 4 on the left side are placed on the left rail. Then the control console 20 is connected to the drive motor 3, the middle cylinder 7, the left-wing cylinder 10, the right-wing cylinder 12, and the two propulsion cylinders 15, and then the control console 20 is connected to the power supply to control the operation of the device. Then the drive motor 3 is started to drive the rail wheels 4 to roll along the rails, and the device can be driven forward to the concrete pouring area. Then, as Figure 2 shown, the propulsion cylinders 15 on both sides are started to extend, pushing the swing plate 9 outward. The left swing plate 9 drives the left-wing cylinder 10 and the left-wing template 11 to tilt to the left, and the right swing plate 9 drives the right-wing cylinder 12 and the right-wing template 13 to tilt to the right, so that the left-wing template 11 and the right-wing template 13 are away from the middle template 8. Then the middle cylinder 7 is extended to lower the middle template 8 to form a concrete pouring cavity between it and the tunnel inner wall, and concrete can be poured into the cavity from both ends of the middle template 8. After the concrete pouring in the middle of the tunnel is completed, as Figure 1As shown, attach the left-wing template 11 and the right-wing template 13 to both ends of the middle template 8 respectively. Then, it is possible to continue pouring concrete into the cavity from the openings above the left-wing template 11 and the right-wing template 13. There is no need to adjust the tunnel pouring position by swinging the middle template 8 left and right. After the pouring is completed, retract the middle cylinder 7, the left-wing cylinder 10, and the right-wing cylinder 12 at one time to separate the template from the concrete. Then, start the device to move forward. By using this construction method, large-area pouring can be carried out without swinging the middle template 8 multiple times, and the waiting time is short, which is beneficial to efficient and high-precision construction.

[0031] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0032] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the 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 of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An open-cut tunnel invert slipform device, comprising a span beam (1), characterized in that: Also includes: A driving mechanism, wherein the driving mechanism is arranged at the bottom of the span beam (1) and is used to drive the span beam (1) to move, the driving mechanism comprising a transmission rod (2), a driving motor (3) and a guide wheel (4), the driving motor (3) being fixed at the four corners of the bottom of the span beam (1), the transmission rod (2) being connected to the four corners of the bottom of the span beam (1) through bearing insertion, and the guide wheel (4) being fixed at the inner end of the transmission rod (2); A support mechanism, wherein the support mechanism is arranged on the span beam (1) and is used to support the movement of the sliding formwork, the support mechanism comprising a vertical main support plate (5), a transverse hanging plate (6), a swing plate (9), a bottom support plate (14), a propulsion cylinder (15), a guide roller frame (16) and a guide roller (17), wherein the vertical main support plate (5) is welded and fixed at the center of the upper surface of the span beam (1), a transverse hanging plate (6) is welded and fixed on the side of the front face of the vertical main support plate (5), two swing plates (9) are arranged at the bottom of the transverse hanging plate (6), a bottom support plate (14) is also welded and fixed at the bottom of the transverse hanging plate (6), a propulsion cylinder (15) is fixed on the bottom support plate (14), a guide roller frame (16) is fixed on the protruding end of the propulsion cylinder (15), and a guide roller (17) is arranged on the guide roller frame (16); A mould shifting mechanism is provided on the supporting mechanism and is used to move the mould, the mould shifting mechanism comprising a middle cylinder (7), a middle template (8), a left wing cylinder (10), a left wing template (11), a right wing cylinder (12) and a right wing template (13), the middle cylinder (7) being fixed at the bottom centre of the transverse hanging plate (6), the middle template (8) being fixed on the protruding end of the middle cylinder (7), the left wing cylinder (10) being fixed on the left swing plate (9), the left wing template (11) being fixed on the protruding end of the left wing cylinder (10), the right wing cylinder (12) being fixed on the right swing plate (9), and the right wing template (13) being fixed on the protruding end of the right wing cylinder (12).

2. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The output shaft of the driving motor (3) is fixedly connected to the outer end of the transmission rod (2).

3. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The guide roller frames (16) are respectively supported on the bottoms of the corresponding side swing plates (9), and the mold shifting mechanism is arranged on the supporting mechanism.

4. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The middle formwork (8), the left wing formwork (11) and the right wing formwork (13) are all located obliquely above the front side of the span beam (1).

5. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The middle cylinder (7) is located between the left wing cylinder (10) and the right wing cylinder (12); the extended end of the middle cylinder (7) is vertically downward; and the left wing cylinder (10) and the right wing cylinder (12) are arranged obliquely.

6. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The middle template (8), the left wing template (11) and the right wing template (13) are all arc-shaped structures.

7. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: The upper end of the swing plate (9) is movably connected to the transverse hanging plate (6) via a hinge (18).

8. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: A reinforcing plate (19) is also welded and fixed to the side of the bottom of the bottom support plate (14), and the propulsion cylinder (15) is also fixed to the reinforcing plate (19).

9. The open-cut tunnel invert sliding formwork device according to claim 1, characterized in that: A control console (20) is also provided on the transverse hanging plate (6).

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