Tunnel formwork supporting device

Abstract

The utility model relates to the technical field of tunnel construction equipment, and particularly discloses a tunnel formwork supporting device which is characterized in that the left side and the right side of a transverse connecting rod are connected to a left formwork and a right formwork respectively; the bottom of the vertical connecting rod is placed on the tunnel ground; the vault template is arranged to adapt to the top radian of the tunnel; the hydraulic oil cylinders are arranged on the lower portions of the transverse mounting plates, and the lower portions of the hydraulic oil cylinders are connected to the supporting legs and make contact with the tunnel ground in a fixed state. The walking wheels are connected to the transverse mounting plate through vertical supports and make contact with the tunnel ground in the walking state. According to the device, during concrete warehousing construction, the supporting legs and the vertical connecting rods are connected to the ground for supporting, and the stability of the device is guaranteed; when construction is completed and movement is needed, the jacking of the vertical connecting rod is shrunk, the walking wheel makes contact with the ground, the device is switched into a walking state, the device is driven by the walking wheel to move to another operation area, the problem of dismounting a rack structure is solved, the construction process is shortened, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction equipment technical field, specifically to a tunnel formwork support device. BACKGROUND

[0002] To ensure the stable operation of the tunnel, concrete secondary lining construction needs to be carried out after the initial support of the tunnel is completed during the construction period. Long-distance tunnel lining construction generally uses customized steel form trolley as the formwork system, and the construction safety and efficiency using the steel form trolley can be effectively guaranteed.

[0003] In actual engineering, if steel form trolley is used for secondary lining of short-distance tunnel (50-200m long), the design, processing, assembly and later removal of the steel form trolley have a long construction period and high production cost, resulting in high cost of lining construction formwork.

[0004] Therefore, a tunnel formwork support device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a tunnel formwork support device to solve the problems of high production cost of steel form trolley and high construction risk of full-dress red scaffold in short-distance tunnel construction.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of a tunnel formwork support device, which comprises a rack structure, a horizontal installation plate, a hydraulic oil cylinder, a supporting leg and a walking wheel.

[0007] The rack structure comprises horizontal connecting rods, vertical connecting rods and a vault formwork. The horizontal connecting rods are provided in multiple numbers, and the left and right sides are connected to the left formwork and the right formwork respectively. The vertical connecting rods are provided in multiple numbers, and each vertical connecting rod is connected to the horizontal connecting rod, with the bottom placed on the tunnel ground. The vault formwork is arranged on the upper part of the vertical connecting rod and is adapted to the top arc of the tunnel.

[0008] The horizontal installation plate is connected to the vertical connecting rod. The hydraulic oil cylinder is arranged at the lower part of the horizontal installation plate, and the lower part of the hydraulic oil cylinder is connected to the supporting leg, which contacts the tunnel ground in the fixed state.

[0009] The walking wheel is connected to the horizontal installation plate through a vertical support and contacts the tunnel ground in the walking state.

[0010] As a further technical scheme of the above scheme, an I-shaped steel support is arranged between the horizontal installation plate and the horizontal connecting rod.

[0011] As a further technical scheme of the above scheme, the gantry structure further comprises a diagonal brace, one end of which is connected to the left formwork and the other end of which is connected to the right formwork.

[0012] As a further technical scheme of the above scheme, the left side and the right side of the transverse connecting rod are provided with jacks, the jacks abut against the square wood base plate through rollers, and the square wood base plate abuts against the left formwork and the right formwork.

[0013] As a further technical scheme of the above scheme, the gantry structure further comprises a diagonal brace, one end of which is connected to the left formwork and the other end of which is connected to the right formwork.

[0014] Compared with the prior art, the device has the following advantages and beneficial effects: the device uses the transverse connecting rod and the vertical connecting rod as supports, sets the left formwork, the right formwork and the vault formwork as the construction formwork for concrete storage, and connects the supporting legs and the vertical connecting rod to the ground support during concrete storage construction, thereby ensuring the stability of the device; when the construction is completed and needs to be moved, the jacks of the vertical connecting rod are retracted, the supporting legs are retracted through the hydraulic oil cylinder, the walking wheels are switched to the walking state by contacting the ground, the device is moved to another operation area by the walking wheels, the problem of disassembling the gantry structure is avoided, the construction process is reduced, and the construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the device in a fixed state.

[0016] Figure 2 It is a structural schematic view of the device in a fixed state. Figure 1

[0017] Figure 3 It is a structural schematic view of the device in a fixed state.

[0018] The meanings of the numbers in the figure are as follows: gantry structure-1; transverse connecting rod-11; vertical connecting rod-12; vault formwork-13; left formwork-14; right formwork-15; diagonal brace-16;

[0019] Transverse mounting plate-2;

[0020] Hydraulic oil cylinder-3;

[0021] Supporting leg-4;

[0022] Walking wheel-5; vertical support-51

[0023] I-shaped steel-6;

[0024] Jack-7; roller-71; square wood base plate-72;

[0025] Main truss-8; square wood cushion block-81.​ Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0027] like Figures 1-3 As shown, a tunnel formwork support device includes a frame structure 1, a transverse mounting plate 2, a hydraulic cylinder 3, outriggers 4, and traveling wheels 5;

[0028] The frame structure 1 includes horizontal connecting rods 11, vertical connecting rods 12, and arch formwork 13; multiple horizontal connecting rods 11 are provided, and the left and right sides are respectively connected to the left formwork 14 and the right formwork 15; multiple vertical connecting rods 12 are provided, each vertical connecting rod 12 is connected to the horizontal connecting rods 11, and the bottom is placed on the tunnel floor; the arch formwork 13 is set on the upper part of the vertical connecting rods 12 and is adapted to the curvature of the tunnel top;

[0029] The horizontal mounting plate 2 is connected to the vertical connecting rod 12; the hydraulic cylinder 3 is located at the lower part of the horizontal mounting plate 2, and the lower part of the hydraulic cylinder 3 is connected to the outrigger 4, which contacts the tunnel ground when in a fixed state.

[0030] The traveling wheel 5 is connected to the horizontal mounting plate 2 via the vertical bracket 51 and contacts the tunnel ground when traveling.

[0031] When using this device, first set up the platform structure 1, then splice the horizontal connecting rod 11 and the vertical connecting rod 12 to form a stable installation structure. The arch template 13 is set on the top of the vertical connecting rod 12 to fit the top curvature of the tunnel. The left template 14 and the right template 15 are set on the left and right sides of the horizontal connecting rod 11. The left template 14, the right template 15 and the arch template 13 together form the casting template. A top support is installed at the bottom of the vertical connecting rod 12, and the top support is fixed in contact with the ground. The arch formwork 13 can be composed of multiple thick plywood panels or a fixed steel formwork. To ensure that the concrete can be poured smoothly, pre-reserved holes are evenly distributed in the middle of the arch formwork 13 to facilitate the installation of vertical concrete transport pipes. Vent holes are set at the end of the arch formwork. During operation, the bottom of the hydraulic cylinder 3 extends to drive the outrigger 4 to move downward. The outrigger 4 is close to the ground and supports the vertical connecting rod 12 together. After the concrete is poured, the top support below the vertical connecting rod 12 retracts, driving the hydraulic cylinder 3 to drive the outrigger 4 to move upward and tighten. When the length of the vertical support 51 is greater than the length of the outrigger 4, the vertical support 51 drives the traveling wheel 5 to contact the ground, and the device switches from a fixed state to a traveling state, moving to the next construction area. This avoids dismantling the platform structure and rebuilding it in the next construction area, thus improving construction efficiency.

[0032] As shown in Figure 1 a preferred embodiment, the transverse mounting plate 2 and the transverse connecting rod 11 are also provided with an I-beam 6 support. In this embodiment, the transverse mounting plate 2 and the transverse connecting rod 11 are provided with an I-beam 6 auxiliary support abutting, further increasing the stability of the device.

[0033] As shown in Figure 1 a preferred embodiment, the gantry structure 1 also includes a diagonal brace 16, one end connected to the left formwork 14, the other end connected to the right formwork 15. In this embodiment, the gantry structure 1 as a whole device stable installation foundation, on the basis of the transverse connecting rod 11 and the vertical connecting rod 12 connection, increase the diagonal brace 16 connection left formwork 14 and right formwork 15, increase the stability of the device, in actual use, the diagonal brace 16 and the transverse connecting rod 11 and the vertical connecting rod 12 can be connected, increase the connection point.

[0034] As shown in Figure 1 a preferred embodiment, the left and right sides of the transverse connecting rod 11 are provided with a jack 7, the jack 7 abutting the square wood pad 72 through the roller 71, the square wood pad 72 abutting the left formwork 14 and the right formwork 15. In this embodiment, the two ends of the transverse connecting rod 11 are provided with a jack 7, the jack 7 contacts the left formwork 14 and the right formwork 15 through the roller 71 and the square wood pad 72, which avoids the direct contact of the transverse connecting rod 11 with excessive pressure, causing damage, and the roller 71 and the square wood pad 72 can be easily replaced after a period of use. The same jacks can also be provided at the connection between the top of the vertical connecting rod 12 and the vault formwork 13 to improve the stability of the connection.

[0035] As shown in Figure 1 a preferred embodiment, it also includes a main truss 8 and a square wood cushion 81; the main truss 8 is arranged at the top of the vertical connecting rod 12, and the top of the main truss 8 is arranged in an arc shape and abuts against the vault formwork 13 through a plurality of square wood cushions 81. In this embodiment, the main truss 8 is arranged at the top of the vertical connecting rod 12 as an installation foundation. Since the top of the tunnel is arranged in an arc shape, a plurality of square wood cushions 81 are used for convenient installation and support at different arc segments. When the vault formwork 13 is removed after the completion of concrete pouring construction of each vault lining unit, the main truss 8 is retracted, and by controlling the retraction height of the left and right main trusses 8, the vault formwork 13 can be easily polished or coated with a release agent.

[0036] In the description of the utility model, "connection", "fixing" can be fixed connection, processing, welding, or mechanical connection, the specific case is understood as the specific meaning of the above terms in the utility model.

[0037] In the description of the utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer" and the like only indicate the orientation or positional relationship for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, so it cannot be understood as a limitation on the utility model.

[0038] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and are not limited thereto; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A tunnel formwork support apparatus, characterised in that: The tunnel construction frame comprises a rack structure (1), a transverse mounting plate (2), a hydraulic oil cylinder (3), a supporting leg (4) and a walking wheel (5). The rack structure (1) comprises transverse connecting rods (11), vertical connecting rods (12) and an arch top template (13). The transverse connecting rods (11) are provided in plurality, and the left and right sides are connected to a left template (14) and a right template (15) respectively. The vertical connecting rods (12) are provided in plurality, each of which is connected to the transverse connecting rod (11) and placed on the ground of the tunnel. The arch top template (13) is arranged on the upper part of the vertical connecting rod (12) and is adapted to the top arc of the tunnel. The transverse mounting plate (2) is connected to the vertical connecting rod (12). The hydraulic oil cylinder (3) is arranged on the lower part of the transverse mounting plate (2), and the lower part of the hydraulic oil cylinder (3) is connected to the supporting leg (4) and contacts the ground of the tunnel in the fixed state. The walking wheel (5) is connected to the transverse mounting plate (2) through a vertical support (51) and contacts the ground of the tunnel in the walking state.

2. A tunnel formwork support apparatus as claimed in claim 1, wherein: The I-shaped steel (6) is arranged between the transverse mounting plate (2) and the transverse connecting rod (11).

3. A tunnel formwork support apparatus as claimed in claim 1, wherein: The rack structure (1) further comprises a diagonal brace (16) connected to the left template (14) at one end and to the right template (15) at the other end.

4. A tunnel formwork support apparatus as claimed in claim 1, characterized in that: The left side and the right side of the transverse connecting rod (11) are provided with jacks (7) which are abutted against square wood backing plates (72) through rollers (71), and the square wood backing plates (72) are abutted against the left template (14) and the right template (15).

5. A tunnel formwork support apparatus as claimed in claim 1, wherein: The tunnel construction frame further comprises a main truss (8) and square wood backing blocks (81). The main truss (8) is arranged on the top of the vertical connecting rod (12), and the top of the main truss (8) is arranged in an arc shape and abutted against the arch top template (13) through the square wood backing blocks (81).

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