A width-adjustable inverted arch formwork device

Abstract

The utility model discloses a kind of inverted arch formwork devices with adjustable width, including transverse drive mechanism, two groups of inverted arch formwork components and two columns of stringers, two groups of inverted arch formwork components are respectively arranged in the lateral two sides of inverted arch layer, two columns of stringers are connected with two groups of inverted arch formwork components one by one, transverse drive mechanism is connected with stringer to drive stringer transverse movement, detachable widening formwork is equipped between two groups of inverted arch formwork components. Can be driven by transverse drive mechanism stringer, inverted arch formwork component whole moves to outside, to increase the lateral spacing of two groups of inverted arch formwork components, then install widening formwork between two groups of inverted arch formwork components, to adapt to widened inverted arch layer. Conversely, after disassembling widening formwork, can be driven by transverse drive mechanism stringer, inverted arch formwork component moves to inside until two groups of inverted arch formwork components abut, to adapt to inverted arch layer of standard width, simple structure, low in cost, high degree of automation, inverted arch formwork component does not need manual movement.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to an adjustable-width invert arch formwork device. Background Technology

[0002] Along the entire length of the tunnel, the width of the invert arch layer is basically uniform in some areas, and the corresponding width of the invert arch formwork is also fixed. However, the width of the invert arch layer in other areas needs to be increased to meet design requirements, and the fixed invert arch formwork is unsuitable in this case. Common solutions include disassembling the invert arch formwork, moving it manually, and assembling widening blocks on the original formwork; or preparing an extra set of widened invert arch formwork as a backup for the widened invert arch layer. The first method is cumbersome, inefficient, and labor-intensive for workers; the second method undoubtedly increases equipment costs, and the backup widened formwork occupies limited space within the tunnel, affecting other operations within the tunnel. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an adjustable invert arch formwork device with simple structure, low cost, and adaptability to the construction of invert arch layers of different widths.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An adjustable-width invert arch formwork device includes a lateral movement drive mechanism, two sets of invert arch formwork assemblies, and two columns of longitudinal beams. The two sets of invert arch formwork assemblies are respectively located on both sides of the invert arch layer. The two columns of longitudinal beams are connected to the two sets of invert arch formwork assemblies in a one-to-one correspondence. The lateral movement drive mechanism is connected to the longitudinal beams to drive the longitudinal beams to move laterally. A detachable widening formwork is provided between the two sets of invert arch formwork assemblies.

[0006] As a further improvement to the above technical solution: the transverse drive mechanism includes a transverse base and two transverse drive members disposed on the transverse base, and the two transverse drive members are connected to the two columns of longitudinal beams in a one-to-one correspondence.

[0007] As a further improvement to the above technical solution: the transverse seat is a transverse sleeve, the transverse drive is disposed inside the transverse sleeve, the longitudinal beam is provided with a connecting part, and the connecting part extends into the transverse sleeve.

[0008] As a further improvement to the above technical solution: the transverse drive mechanism is located at both ends of the longitudinal beam.

[0009] As a further improvement to the above technical solution: a transverse guide mechanism is provided between the two sets of inverted arch template components.

[0010] As a further improvement to the above technical solution: the transverse guide mechanism includes a guide rod disposed on one set of the invert arch template assemblies and a guide sleeve disposed on another set of the invert arch template assemblies, wherein the guide rod passes through the guide sleeve.

[0011] As a further improvement to the above technical solution: a reinforcing rib is provided between the guide rod and the corresponding inverted arch template assembly, and a reinforcing rib is provided between the guide sleeve and the corresponding inverted arch template assembly.

[0012] As a further improvement to the above technical solution: the transverse drive mechanism is provided with a lifting lug, and the guide rod passes through the lifting lug.

[0013] As a further improvement to the above technical solution: the two sets of inverted arch template assemblies are connected by threaded fasteners, and the inverted arch template assembly and the widened template are connected by threaded fasteners.

[0014] As a further improvement to the above technical solution: the invert arch formwork assembly includes an invert arch formwork body and a side formwork hinged to the invert arch formwork body. The invert arch formwork body is connected to the longitudinal beam. The longitudinal beam is provided with a swing drive for driving the side formwork to swing. The widened formwork is detachably disposed between the two invert arch formwork bodies.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This utility model discloses an adjustable-width invert arch formwork device. The invert arch formwork is divided into two sets of invert arch formwork components arranged laterally along the invert arch layer. The two sets of invert arch formwork components are respectively installed on corresponding longitudinal beams. A lateral movement drive mechanism can drive the longitudinal beams and the entire invert arch formwork assembly to move outwards, thereby increasing the lateral spacing between the two sets of invert arch formwork components. After the invert arch formwork components are in lateral position, a widening formwork is installed between the two sets of invert arch formwork components to accommodate the widened invert arch layer. Conversely, after disassembling the widening formwork, the lateral movement drive mechanism can drive the longitudinal beams and the invert arch formwork components to move inwards until the two sets of invert arch formwork components are in contact, thereby accommodating a standard-width invert arch layer. The device has a simple structure, low cost, high degree of automation, and eliminates the need for manual movement of the invert arch formwork components.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main view structure of Embodiment 1 of this utility model when used in a standard cross-section.

[0019] Figure 2 This is a top view of the structure of Embodiment 1 of this utility model when used in a standard cross-section.

[0020] Figure 3 This is a schematic diagram of the main structure of Embodiment 1 of this utility model when used to widen the cross section.

[0021] Figure 4 This is a schematic diagram of the main view structure of Embodiment 2 of this utility model when used in a standard cross-section.

[0022] Figure 5 This is a schematic diagram of the main structure of Embodiment 2 of this utility model when used to widen the cross section.

[0023] Figure 6 This is a schematic diagram of the main view structure of Embodiment 3 of this utility model when used in a standard cross-section.

[0024] Figure 7 This is a schematic diagram of the main structure of Embodiment 3 of this utility model when used to widen the cross section.

[0025] The labels in the diagram represent: 1. Lateral movement drive mechanism; 11. Lateral movement seat; 12. Lateral movement drive component; 13. Lifting lug; 2. Invert arch formwork assembly; 21. Invert arch formwork body; 22. Side formwork; 3. Longitudinal beam; 31. Connecting part; 32. Swing drive component; 4. Widened formwork; 5. Lateral movement guide mechanism; 51. Guide rod; 52. Guide sleeve; 53. Reinforcing rib plate. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] Figures 1 to 3 This illustration shows an embodiment of the adjustable-width invert arch formwork device of this utility model. The adjustable-width invert arch formwork device of this embodiment includes a transverse drive mechanism 1, two sets of invert arch formwork assemblies 2, and two rows of longitudinal beams 3. The two sets of invert arch formwork assemblies 2 are respectively located on both sides of the transverse side of the invert arch layer. The two rows of longitudinal beams 3 are connected one-to-one with the two sets of invert arch formwork assemblies 2. The transverse drive mechanism 1 is connected to the longitudinal beams 3 to drive the longitudinal beams 3 to move laterally. A detachable widening formwork 4 is provided between the two sets of invert arch formwork assemblies 2. Here, longitudinal refers to the length direction of the tunnel. Figure 2 The vertical direction is centered. Correspondingly, the horizontal direction is the width of the tunnel. Figure 1 and Figure 3 The center represents the left and right directions.

[0032] In this embodiment, the invert arch formwork device is divided into two sets of invert arch formwork components 2 arranged laterally along the invert arch layer. The two sets of invert arch formwork components 2 are respectively installed on corresponding longitudinal beams 3. The longitudinal beams 3 and the invert arch formwork components 2 can be moved outward as a whole by the transverse movement drive mechanism 1, thereby increasing the transverse spacing between the two sets of invert arch formwork components 2. After the invert arch formwork components 2 are in lateral position, a widening formwork 4 is installed between the two sets of invert arch formwork components 2 to adapt to the widened invert arch layer. Conversely, after the widening formwork 4 is removed, the longitudinal beams 3 and the invert arch formwork components 2 can be moved inward by the transverse movement drive mechanism 1 until the two sets of invert arch formwork components 2 are close together, thereby adapting to the standard width invert arch layer. The structure is simple, the cost is low, the degree of automation is high, and there is no need for manual movement of the invert arch formwork components 2.

[0033] Furthermore, in this embodiment, the lateral movement drive mechanism 1 includes a lateral movement seat 11 and two lateral movement drive members 12 disposed on the lateral movement seat 11. The two lateral movement drive members 12 are connected one-to-one with the two longitudinal beams 3. The lateral movement drive members 12 can be, for example, hydraulic cylinders, pneumatic cylinders, or electric push rods. Through the lateral extension and retraction of the lateral movement drive members 12, the two longitudinal beams 3 are driven to move laterally synchronously, so as to move away from or towards each other. The arch formwork assembly 2 moves laterally with the longitudinal beams 3.

[0034] In a preferred embodiment, the transverse sliding seat 11 is a transverse sliding sleeve, the transverse sliding drive component 12 is disposed inside the transverse sliding sleeve, and the longitudinal beam 3 is provided with a connecting part 31, which extends into the transverse sliding sleeve. The transverse sliding sleeve can provide shielding and protection for the internal transverse sliding drive component 12 to prevent damage to the transverse sliding drive component 12 during construction. On the other hand, it can provide a certain guiding function for the connecting part 31 to prevent the longitudinal beam 3 from deviating during transverse movement.

[0035] In a preferred embodiment, the transverse drive mechanism 1 is located at both ends of the longitudinal beam 3. Since the construction section of the inverted arch formwork device is relatively long each time (e.g., 12 meters), placing the transverse drive mechanism 1 at both ends of the longitudinal beam 3 is beneficial for driving the longitudinal beam 3 and the inverted arch formwork assembly 2 to move transversely at the same time.

[0036] In a preferred embodiment, the two sets of inverted arch formwork assemblies 2 (specifically, the inverted arch formwork bodies 21 of the two sets of inverted arch formwork assemblies 2) are connected by threaded fasteners, and the inverted arch formwork assemblies 2 and the widened formwork 4 (specifically, the inverted arch formwork bodies 21 of the two sets of inverted arch formwork assemblies 2 and the widened formwork 4) are connected by threaded fasteners. The threaded fasteners can be, for example, bolts or screws. For a standard cross-section, the threaded fasteners reliably connect the two sets of inverted arch formwork assemblies 2 into one unit, preventing relative movement during concrete pouring; for a widened cross-section, the threaded fasteners reliably connect the two sets of inverted arch formwork assemblies 2 and the widened formwork 4 into one unit, preventing relative movement during concrete pouring. The structure is simple and easy to assemble and disassemble.

[0037] In this embodiment, the invert arch template assembly 2 includes an invert arch template body 21 and a side template 22 hinged to the invert arch template body 21. The invert arch template body 21 is connected to the longitudinal beam 3. The longitudinal beam 3 is provided with a swing drive 32 for driving the side template 22 to swing (for example, it can be a hydraulic cylinder, air cylinder or electric push rod, etc., which drives the side template 22 to swing by extension and retraction), which facilitates the adjustment of the included angle between the side template 22 and the invert arch template body 21. The widened template 4 is detachably provided between the two invert arch template bodies 21.

[0038] Example 2

[0039] Figures 4 to 5This invention illustrates another embodiment of the adjustable-width inverted arch formwork device. The adjustable-width inverted arch formwork device of this embodiment is structurally similar to that of Embodiment 1, except that:

[0040] In this embodiment, a lateral guide mechanism 5 is provided between the two sets of invert arch formwork assemblies 2. The lateral guide mechanism 5 provides guidance for the lateral movement of the two sets of invert arch formwork assemblies 2, preventing deviation. The structure is simple and effective. Preferably, the lateral guide mechanism 5 is located at both ends of the invert arch formwork assembly 2.

[0041] In a preferred embodiment, the lateral guiding mechanism 5 includes a guide rod 51 disposed on one set of invert arch template assemblies 2 and a guide sleeve 52 disposed on another set of invert arch template assemblies 2. The guide rod 51 passes through the guide sleeve 52, which is simple and reliable in structure and helps to avoid displacement. Preferably, the widened template 4 can be provided with a clearance groove or clearance hole, so that the guide rod 51 passes through the widened template 4 and avoids interference. Of course, in other embodiments, the lateral guiding mechanism 5 can also adopt a guide groove and a guide rail, or a guide tube that is nested together, etc., which will not be described in detail here.

[0042] Furthermore, in this embodiment, a reinforcing rib 53 is provided between the guide rod 51 and the corresponding inverted arch template assembly 2 (specifically, between the guide rod 51 and the inverted arch template body 21 in the inverted arch template assembly 2), and a reinforcing rib 53 is provided between the guide sleeve 52 and the corresponding inverted arch template assembly 2 (specifically, between the guide sleeve 52 and the inverted arch template body 21 in the inverted arch template assembly 2). This is beneficial to improving the connection strength between the guide rod 51, the guide sleeve 52 and the inverted arch template assembly 2, and preventing separation after being subjected to force.

[0043] Example 3

[0044] Figures 6 to 7 This invention illustrates another embodiment of the adjustable-width inverted arch formwork device. The adjustable-width inverted arch formwork device of this embodiment is structurally similar to that of Embodiment Two, except that:

[0045] In this embodiment, the transverse drive mechanism 1 is provided with a lifting lug 13, and the guide rod 51 passes through the lifting lug 13. The lifting lug 13 can provide certain support and guidance for the guide rod 51, improving the stress condition of the guide rod 51. Preferably, the widened template 4 can be provided with a clearance groove or clearance hole to avoid interference with the lifting lug 13.

[0046] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A width-adjustable arch formwork device, characterized in that: It includes a transverse drive mechanism (1), two sets of invert arch template assemblies (2) and two columns of longitudinal beams (3). The two sets of invert arch template assemblies (2) are respectively located on the transverse sides of the invert arch layer. The two columns of longitudinal beams (3) are connected to the two sets of invert arch template assemblies (2) in a one-to-one correspondence. The transverse drive mechanism (1) is connected to the longitudinal beams (3) to drive the longitudinal beams (3) to move laterally. A detachable widened template (4) is provided between the two sets of invert arch template assemblies (2).

2. The adjustable-width inverted arch formwork device according to claim 1, characterized in that: The transverse drive mechanism (1) includes a transverse seat (11) and two transverse drive members (12) disposed on the transverse seat (11). The two transverse drive members (12) are connected to the two columns of longitudinal beams (3) in a one-to-one correspondence.

3. The adjustable-width inverted arch formwork device according to claim 2, characterized in that: The transverse seat (11) is a transverse sleeve, the transverse drive (12) is located inside the transverse sleeve, and the longitudinal beam (3) is provided with a connecting part (31), which extends into the transverse sleeve.

4. The adjustable-width inverted arch formwork device according to claim 1, characterized in that: The transverse drive mechanism (1) is located at both ends of the longitudinal beam (3).

5. The adjustable-width inverted arch formwork device according to claim 1, characterized in that: A transverse guide mechanism (5) is provided between the two sets of arch formwork assemblies (2).

6. The adjustable-width inverted arch formwork device according to claim 5, characterized in that: The transverse guide mechanism (5) includes a guide rod (51) disposed on one of the sets of invert arch template assemblies (2) and a guide sleeve (52) disposed on another set of the invert arch template assemblies (2), wherein the guide rod (51) passes through the guide sleeve (52).

7. The adjustable-width inverted arch formwork device according to claim 6, characterized in that: A reinforcing rib (53) is provided between the guide rod (51) and the corresponding arch template assembly (2), and a reinforcing rib (53) is provided between the guide sleeve (52) and the corresponding arch template assembly (2).

8. The adjustable-width inverted arch formwork device according to claim 6, characterized in that: The transverse drive mechanism (1) is provided with a lifting lug (13), and the guide rod (51) passes through the lifting lug (13).

9. The adjustable-width inverted arch formwork device according to claim 1, characterized in that: The two sets of inverted arch template assemblies (2) are connected by threaded fasteners, and the inverted arch template assembly (2) and the widened template (4) are connected by threaded fasteners.

10. The width-adjustable invert arch formwork device according to any one of claims 1 to 9, characterized in that: The arch formwork assembly (2) includes an arch formwork body (21) and a side formwork (22) hinged to the arch formwork body (21). The arch formwork body (21) is connected to the longitudinal beam (3). The longitudinal beam (3) is provided with a swing drive (32) for driving the side formwork (22) to swing. The widened formwork (4) is detachably disposed between the two arch formwork bodies (21).

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