Lining short side wall steel bar protection layer control device

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a lining short side wall steel bar protection layer control device which comprises a base, a steel bar protection layer control device and a steel bar protection layer control device. One end of the extension plate is mounted on the base, a clamp assembly is mounted on the extension plate, and the clamp assembly is provided with a clamping structure matched with a first layer of longitudinal steel bars of the inverted arch; the installation position of the clamp assembly is adjustable in the length direction of the extension plate. According to the scheme, the defect that in the prior art, the thickness of a protection layer between a steel bar and a concrete formwork is difficult to accurately control is overcome, and the device structure which can accurately control the distance between the steel bar and the formwork and is easy and convenient to operate is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a lining low side wall steel bar protective layer control device. Background Art

[0002] In tunnel construction, the invert is a key component of the supporting structure, and its construction quality directly affects the safety and durability of the entire tunnel. In the construction of invert reinforcement, a common technical problem is that the thickness of the protective layer between the reinforcement and the concrete formwork is not sufficient, that is, the reinforcement is easy to cling to the formwork, which will lead to insufficient protective layer. The existence of the protective layer is to prevent the reinforcement from directly contacting the external environment and avoid rust, thereby ensuring the long-term stability and safety of the reinforced concrete structure.

[0003] The traditional solution is to use spacers between the steel bars and the formwork, but this is often difficult to control accurately and inefficient. In addition, the spacers are prone to displacement, especially under the vibration during the concrete pouring process. Utility Model Content

[0004] The utility model provides a steel bar protective layer control device for lining a low side wall, which is used to solve the defect that the thickness of the protective layer between the steel bar and the concrete formwork is difficult to accurately control in the prior art, and realizes a device structure that can accurately control the distance between the steel bar and the formwork and is easy to operate.

[0005] The utility model provides a control device for the steel bar protective layer of a lining low side wall, comprising: a base, which is arranged on a side wall formwork of an inverted arch; an extension plate, one end of which is mounted on the base, a clamp assembly is mounted on the extension plate, and the clamp assembly has a clamping structure adapted to the first layer of longitudinal steel bars of the inverted arch; wherein the installation position of the clamp assembly is adjustable along the length direction of the extension plate.

[0006] According to a control device for the steel bar protective layer of a lining low side wall provided by the utility model, the end of the extension plate is hingedly mounted on the base, and the extension plate and the clamp assembly mounted on the extension plate can swing up and down relative to the hinge axis of the extension plate.

[0007] According to a control device for the protective layer of steel bars of a lining low side wall provided by the utility model, the base includes a bottom plate installed on the formwork of the inverted arch side wall, and two vertical plates vertically arranged on the bottom plate; a parallel gap corresponding to the thickness of the extension plate is provided between the two vertical plates, the end of the extension plate is arranged in the parallel gap, and the two vertical plates are hingedly matched with the end of the extension plate through a screw member.

[0008] According to a control device for the steel bar protective layer of a lining low side wall provided by the utility model, a rib plate is arranged between the outer side of the vertical plate and the bottom plate; the rib plate is respectively perpendicular to the vertical plate and the bottom plate.

[0009] According to a control device for the protective layer of steel bars of a lining low side wall provided by the utility model, the clamp assembly includes a mounting plate, and the clamping structure is located on the side of the mounting plate facing downward; a fastener is provided between the mounting plate and the extension plate, and the mounting plate is fixedly mounted on the extension plate by the fastener.

[0010] According to a lining low side wall reinforcement protective layer control device provided by the utility model, the clamping structure includes a first baffle rod and a second baffle rod parallel to each other; the first baffle rod, the second baffle rod and a side edge of the mounting plate together constitute an F-shaped clamping structure.

[0011] According to a lining low side wall reinforcement protective layer control device provided by the utility model, the fastener is a threaded member; the mounting plate is provided with at least two assembly holes adapted to the threaded member.

[0012] According to a lining low side wall reinforcement protective layer control device provided by the utility model, the extension plate is provided with an elongated limiting hole extending along the length direction of the extension plate; the fastener fixes the mounting plate to the extension plate through the assembly hole and the elongated limiting hole.

[0013] According to a lining low side wall reinforcement protective layer control device provided by the utility model, the extension plate is provided with a plurality of installation holes arranged along the length direction of the extension plate; the spacing between the installation holes is equal to the spacing between the assembly holes.

[0014] According to a control device for the steel bar protective layer of a lining low side wall provided by the utility model, the installation plate and the extension plate are both steel plates with a specification of 5 mm.

[0015] The utility model provides a lining low side wall steel bar protective layer control device, which realizes precise control of the steel bar position by integrating the base, extension plate and adjustable clamp assembly, ensuring the consistency and reliability of the thickness of the protective layer between the steel bar and the template. The clamping structure of the clamp assembly adapts to the steel bar size, and cooperates with the adjustable installation on the extension plate to flexibly adapt to different construction needs, avoiding the defects of easy displacement and inaccurate control of traditional pads, simplifying the operation process, improving construction efficiency and quality, and effectively solving the technical problem of difficult control of the thickness of the protective layer in tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The utility model is a schematic structural diagram of a lining low side wall reinforcement protection layer control device.

[0018] Figure 2 The utility model is a schematic diagram of the exploded structure of the extension plate and the clamp assembly of the lining low side wall reinforcement protection layer control device.

[0019] Figure 3 The utility model is a schematic structural diagram of a base of a lining low side wall reinforcement protection layer control device.

[0020] Reference numerals:

[0021] 10. Base; 11. Bottom plate; 12. Vertical plate; 13. Parallel gap; 14. Rib plate; 20. Extension plate; 21. Long limit hole; 30. Fixture assembly; 31. Mounting plate; 32. Fastener; 33. First stop bar; 34. Second stop bar; 35. Assembly hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0024] In view of the common phenomenon of steel bar sticking to the formwork in the construction of tunnel inverted arch steel bars, which leads to insufficient thickness of the protective layer and affects the safety and durability of the structure, the utility model provides a lining low side wall steel bar protective layer control device. In a preferred embodiment, each part of the device is made of 5mm steel plate, combined with an F-type clamping structure and a double nut length adjustment mechanism to achieve precise control of the distance between the steel bar and the formwork.

[0025] Specifically, one end of the device is firmly mounted on the invert side wall formwork, and the other end is tightly combined with the first layer of longitudinal steel bars of the invert through the clamp assembly. The clamping structure ensures the stable positioning of the steel bars, and the mechanism of double nut adjustment of the assembly position allows construction workers to easily adjust the limit distance between the steel bars and the formwork as needed, thereby accurately controlling the thickness of the protective layer, avoiding the shortcomings of the traditional pad method, such as difficulty in precise control and easy displacement, and significantly improving the construction quality and efficiency.

[0026] In actual use, in longer tunnels or large-scale construction areas, multiple lining low side wall steel bar protection layer control devices can be set up to ensure that the thickness of the protection layer of the entire steel mesh is uniform. By deploying multiple devices at different locations, comprehensive monitoring of the entire construction area can be achieved.

[0027] Combine the following Figure 1 , Figure 2 and Figure 3 The specific implementation manner of the lining low side wall reinforcement protection layer control device of the utility model is described.

[0028] like Figure 1As shown, the utility model provides a lining low side wall steel bar protective layer control device, comprising: a base 10, which is arranged on the inverted arch side wall formwork; an extension plate 20, one end of which is installed on the base 10, and a clamp assembly 30 is installed on the extension plate 20, and the clamp assembly 30 has a clamping structure adapted to the first layer of longitudinal steel bars of the inverted arch; wherein, along the length direction of the extension plate 20, the installation position of the clamp assembly 30 is adjustable. The clamp assembly 30 in the device has a clamping structure adapted to the first layer of longitudinal steel bars of the inverted arch, which can accurately locate the position of the steel bars, ensuring that the steel bars and the formwork maintain a consistent and sufficient protective layer thickness.

[0029] Specifically, the installation position of the clamp assembly 30 along the length direction of the extension plate 20 is adjustable, and the distance between the steel bar and the template can be adjusted according to actual needs during the construction process, so as to adapt to different construction requirements and environmental changes, and ensure the consistency and reliability of the thickness of the protective layer. Compared with the traditional manual placement of pads, the use of the device of the utility model is more convenient, and there is no need to frequently manually adjust the position of the pads, which reduces the labor intensity of workers and improves construction efficiency. The base 10 is firmly set on the invert side wall template, and the extension plate 20 is connected to the base 10 to form a stable support structure. Even under the vibration effect during concrete pouring, the position of the steel bar can be kept stable, avoiding the problem of easy displacement of the pads, and ensuring the uniformity of the thickness of the protective layer and the integrity of the structure. The utility model of the lining low side wall steel bar protective layer control device effectively solves the technical problem of controlling the thickness of the steel bar protective layer in tunnel construction through its precise, adjustable, stable and easy-to-operate characteristics, and significantly improves the construction efficiency and engineering quality.

[0030] There are indeed many ways to adjust the installation position of the fixture assembly 30, which can be selected according to actual needs. For example, a slide groove and a locking mechanism can be set between the fixture assembly 30 and the extension plate 20, one or more slide grooves are set on the extension plate 20, and the fixture assembly 30 is installed on these slide grooves through a slider. The slider is designed with a locking mechanism, such as a butterfly nut or a quick release buckle. When the position of the fixture assembly 30 needs to be adjusted, the locking mechanism is first loosened, and the fixture assembly 30 is moved to the desired position, and then the locking mechanism is tightened to fix the fixture assembly 30. In addition, a long strip hole and a threaded fastener 32 can also be used. The extension plate 20 is provided with a long strip hole, and the fixture assembly 30 is connected to the extension plate 20 through a bolt or other type of threaded fastener 32 through the long strip hole. By adjusting the position of the threaded fastener 32 in the long strip hole, the installation position of the fixture assembly 30 can be changed.

[0031] According to a lining low side wall reinforcement protective layer control device provided by the utility model, the end of the extension plate 20 is preferably hingedly mounted on the base 10, and the extension plate 20 and the clamp assembly 30 mounted on the extension plate 20 can swing up and down relative to the hinge axis of the extension plate 20. The hinged structure enables the device to adapt to construction surfaces with different inclination angles, and ensures that the clamp assembly 30 accurately positions the reinforcement and maintains the required thickness of the protective layer even in complex and changeable tunnel environments. The up and down swinging function provides additional operating freedom, making it easier for construction personnel to adjust the position of the device under different construction conditions. During the construction process, if it is found that the position of the reinforcement deviates from the predetermined position, the hinged structure allows the angle of the clamp assembly 30 to be quickly adjusted, and the deviation is corrected in time to ensure the construction quality.

[0032] like Figure 3 As shown, according to a control device for the protective layer of steel bars of a lining low side wall provided by the utility model, the base 10 includes a bottom plate 11 installed on the inverted arch side wall formwork, and two vertical plates 12 vertically arranged on the bottom plate 11; there is a parallel gap 13 adapted to the thickness of the extension plate 20 between the two vertical plates 12, the end of the extension plate 20 is arranged in the parallel gap 13, and the two vertical plates 12 are hingedly matched with the end of the extension plate 20 through screws. Specifically, the base 10 includes a bottom plate 11 and two vertical plates 12, and the bottom plate 11 is directly installed on the inverted arch side wall formwork by means such as flange connection or welding, thereby ensuring the stability and positioning accuracy of the entire device. The two vertical plates 12 are vertically arranged on the bottom plate 11, and a parallel gap 13 matching the thickness of the extension plate 20 is formed between them. This design allows the end of the extension plate 20 to be inserted therein and hingedly matched through screws. Among them, the two vertical plates 12 can provide stable support for the extension plate 20, forming a frame-like structure, thereby enhancing the rigidity and stability of the entire device and ensuring that it will not be easily deformed during the construction process.

[0033] Furthermore, according to the control device for the steel bar protective layer of the lining low side wall provided by the utility model, a rib plate 14 is arranged between the outer side of the vertical plate 12 and the bottom plate 11; the rib plate 14 is perpendicular to the vertical plate 12 and the bottom plate 11 respectively. The function of the rib plate 14 is to increase the rigidity and stability of the base 10. By adding the rib plate 14, the overall bearing capacity of the base 10 is improved, and the extension plate 20 and the fixture assembly 30 can be better supported.

[0034] like Figure 1 and Figure 2As shown, according to a lining short side wall steel bar protective layer control device provided by the utility model, the fixture assembly 30 includes a mounting plate 31, and the clamping structure is located on the side of the mounting plate 31 facing downward; a fastener 32 is arranged between the mounting plate 31 and the extension plate 20, and the mounting plate 31 is fixedly mounted on the extension plate 20 through the fastener 32. Among them, the mounting plate 31 and the extension plate 20 are connected by the fastener 32, and the fastener 32 can be a connecting device such as a screw or a bolt. Through the fastener 32, the mounting plate 31 is firmly fixed on the extension plate 20, and the fastener 32 is adjusted as needed to adjust the installation position of the mounting plate 31 on the extension plate 20. In the use state, the fit between the mounting plate 31 and the extension plate 20 and the action of the fastener 32 jointly ensure the structural strength and stability of the entire lining short side wall steel bar protective layer control device. The plate surface of the mounting plate 31 is kept in contact with the extension plate 20, and the contact surface provides sufficient support area, which helps to disperse the pressure applied by the fastener 32 and avoid excessive local stress.

[0035] According to a control device for the protective layer of steel bars of a lining low side wall provided by the utility model, the clamping structure includes a first baffle 33 and a second baffle 34 parallel to each other; the first baffle 33 and the second baffle 34 and a side edge of the mounting plate 31 together constitute an F-shaped clamping structure. The F-shaped clamping structure contacts the steel bars through the first baffle 33 and the second baffle 34, and can stably clamp the steel bars from both sides to ensure that the position of the steel bars is accurate during the concrete pouring process. Preferably, the device can be equipped with a plurality of clamp assemblies 30 with different size parameters, and the sizes of the mounting plates 31 of different clamp assemblies 30 and the distances between the first baffle and the second baffle are different, so that the clamp assembly 30 suitable for the position and shape of the steel bars can be selected according to actual needs.

[0036] According to a lining low side wall steel bar protective layer control device provided by the utility model, the fastener 32 is a threaded member; the mounting plate 31 is provided with at least two assembly holes 35 adapted to the threaded member. The threaded member can provide a stable connection force, ensure the firm connection between the mounting plate 31 and the extension plate 20, and facilitate the staff to manually adjust the tightness or disassemble and assemble. Through the cooperation of at least two assembly holes 35 and the threaded member, multi-point constraint can be achieved, which helps to correct and maintain the direction of the mounting plate 31, ensuring that it is consistent with the expected direction.

[0037] In a preferred embodiment, according to a lining low side wall steel bar protective layer control device provided by the utility model, the extension plate 20 is provided with an elongated limiting hole 21 extending along the length direction of the extension plate 20; the fastener 32 fixes the mounting plate 31 to the extension plate 20 through the assembly hole 35 and the elongated limiting hole 21. Specifically, the fastener 32 (such as a bolt) passes through the assembly hole 35 on the mounting plate 31 and the elongated limiting hole 21 on the extension plate 20, and cooperates with the nut to fix the mounting plate 31 to the extension plate 20. This method provides a continuous adjustment range, allowing the mounting plate 31 to move smoothly within the length range of the elongated limiting hole 21, thereby fine-tuning the position of the fixture assembly 30 to adapt to the requirements of protective layers of different thicknesses. By loosening the fastener 32, the position of the mounting plate 31 can be easily adjusted, and then the fastener 32 can be re-tightened to achieve rapid positioning and fixing.

[0038] In another embodiment, according to a lining low side wall reinforcement protective layer control device provided by the utility model, the extension plate 20 is provided with a plurality of mounting holes arranged along the length direction of the extension plate 20; the spacing between the mounting holes is equal to the spacing between the assembly holes 35. The fastener 32 passes through the assembly hole 35 of the mounting plate 31 and any adjacent mounting holes of the extension plate 20 to fix the mounting plate 31. This method provides discrete adjustment options, and the mounting holes matching the assembly holes 35 correspond to different adjustment distance requirements. When adjustment is required, the fastener 32 can be removed and the mounting plate 31 can be re-fixed on a different mounting hole to adapt to different construction requirements, providing higher adjustment accuracy and stability.

[0039] like Figure 2 As shown, according to a lining low side wall reinforcement protection layer control device provided by the utility model, the mounting plate 31 and the extension plate 20 are preferably both 5mm steel plates. The 5mm thick steel plate can provide sufficient strength and rigidity to ensure the stability and durability of the device during the concrete pouring process. It is understandable that the bottom plate 11 and the vertical plate and the rib plate 14 constituting the base 10 can also be preferably made of 5mm steel plates. Using the same material specifications can simplify procurement and inventory management and reduce material costs.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A lining low side wall steel bar protective layer control device, characterized in that: include: A base (10) is arranged on the side wall formwork of the invert; An extension plate (20) is mounted on the base (10) at one end, a clamp assembly (30) is mounted on the extension plate (20), and the clamp assembly (30) has a clamping structure adapted to the first layer of longitudinal steel bars of the invert; Wherein, along the length direction of the extension plate (20), the installation position of the clamp assembly (30) is adjustable.

2. The lining low side wall reinforcement protective layer control device according to claim 1 is characterized in that: The end of the extension plate (20) is hingedly mounted on the base (10), and the extension plate (20) and the clamp assembly (30) mounted on the extension plate (20) are capable of swinging up and down relative to the hinge axis of the extension plate (20).

3. The lining low side wall reinforcement protective layer control device according to claim 2 is characterized in that: The base (10) comprises a bottom plate (11) mounted on the invert side wall formwork, and two vertical plates (12) vertically arranged on the bottom plate (11); A parallel gap (13) adapted to the thickness of the extension plate (20) is provided between the two vertical plates (12); an end of the extension plate (20) is arranged in the parallel gap (13); and the two vertical plates (12) and the end of the extension plate (20) are hingedly matched via screws.

4. The lining low side wall reinforcement protective layer control device according to claim 3 is characterized in that: A rib plate (14) is provided between the outer side of the vertical plate (12) and the bottom plate (11); The rib plates (14) are respectively perpendicular to the vertical plates (12) and the bottom plate (11).

5. The lining low side wall reinforcement protective layer control device according to claim 1 is characterized in that: The clamp assembly (30) comprises a mounting plate (31), and the clamping structure is located on a side of the mounting plate (31) facing downward; A fastener (32) is provided between the mounting plate (31) and the extension plate (20), and the mounting plate (31) is fixedly mounted on the extension plate (20) by means of the fastener (32).

6. The lining low side wall reinforcement protective layer control device according to claim 5 is characterized in that: The locking structure comprises a first blocking rod (33) and a second blocking rod (34) which are parallel to each other; The first blocking rod, the second blocking rod and a side edge of the mounting plate (31) together form an F-shaped locking structure.

7. The lining low side wall reinforcement protection layer control device according to claim 5 is characterized in that: The fastener (32) is a threaded member; The mounting plate (31) is provided with at least two assembly holes (35) adapted to the threaded members.

8. The lining low side wall reinforcement protective layer control device according to claim 7 is characterized in that: The extension plate (20) is provided with an elongated limiting hole (21) extending along the length direction of the extension plate (20); The fastener (32) fixes the mounting plate (31) onto the extension plate (20) via the assembly hole (35) and the elongated limiting hole (21).

9. The lining low side wall reinforcement protection layer control device according to claim 7 is characterized in that: The extension plate (20) is provided with a plurality of mounting holes arranged along the length direction of the extension plate (20); The spacing between the installation holes is equal to the spacing between the assembly holes (35).

10. The lining low side wall reinforcement protection layer control device according to claim 5, characterized in that: The mounting plate (31) and the extension plate (20) are both 5 mm steel plate parts.

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