A low side wall inverted arch steel bar positioning device

Abstract

This invention provides a rebar positioning device for a low-profile wall arch, relating to the field of rebar positioning technology. It includes an inner rebar positioning clamp, an outer rebar positioning clamp, and a waterstop clamp for clamping a waterstop. The inner rebar positioning clamp includes multiple first slots for engaging the inner circumferential rebar. The outer rebar positioning clamp includes multiple second slots for engaging the outer circumferential rebar, with the openings of the second slots facing the outer circumferential rebar. The waterstop clamp includes a first clamping plate and a second clamping plate hinged together. The first clamping plate is fixedly connected to the inner rebar positioning clamp, and the second clamping plate is fixedly connected to the outer rebar positioning clamp. The first and second clamping plates are locked together by a locking mechanism, and the hinge axis of the first and second clamping plates is parallel to the centerline of the outer circumferential rebar. This device can accurately control the rebar layer spacing, adjust the distance between the inner and outer rebar layers, and simultaneously fix the waterstop, ensuring good construction quality of the embedded waterstop.

Description

Technical Field

[0001] This invention relates to the field of rebar positioning technology, and in particular to a rebar positioning device for a low side wall arch. Background Technology

[0002] A tunnel is an engineering structure buried in the ground and is a form of human utilization of underground space. A tunnel mainly includes the tunnel body, portal, lining and auxiliary buildings. In order to prevent the tunnel from collapsing, a support structure is set in the tunnel. The tunnel invert is a reverse arch structure set at the bottom of the tunnel to improve the stress conditions of the upper support structure.

[0003] Tunnel inverts are mostly reinforced concrete structures. During the construction of tunnel inverts, steel bars need to be pre-embedded to enhance their structural strength. The spacing of tunnel lining steel bars generally varies depending on the lining grade. Moreover, the spacing between the bottom and top layers of steel bars and their overall alignment are difficult to control, making construction challenging and affecting the efficiency of invert steel bar installation. Furthermore, existing steel bar positioning devices have fixed spacing and can only be used for positioning steel bars of one lining grade. The spacing between two layers of steel bars cannot be effectively adjusted, and existing positioning devices cannot effectively fix waterstops, often requiring additional fixing devices to limit their movement.

[0004] Therefore, there is an urgent need to propose a positioning device for the reinforcing bars of the low side wall arch, which can effectively adjust the spacing of the reinforcing bar layers and stably fix the waterstop. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning device for the reinforcing bars of the inverted arch of a short side wall, so as to solve the problems existing in the prior art. By controlling the relative movement of the first clamping plate and the second clamping plate, the spacing between the reinforcing bar layers can be accurately controlled, and the distance between the inner and outer reinforcing bar layers can be adjusted. At the same time, the waterstop can be fixed to ensure that the embedded waterstop has good construction quality.

[0006] To achieve the above objectives, the present invention provides the following solution: a short side wall arch reinforcement positioning device, including an inner reinforcement positioning clamp, an outer reinforcement positioning clamp, and a waterstop clamp for clamping the waterstop.

[0007] The inner rebar positioning clamp includes multiple first slots for engaging the inner circumferential rebar;

[0008] The outer rebar positioning clamp includes multiple second slots for engaging the outer circumferential rebar, with the openings of the second slots facing the outer circumferential rebar;

[0009] The waterstop clamp includes a first clamp and a second clamp that are hinged to each other. The first clamp is fixedly connected to the inner steel bar positioning clamp, and the second clamp is fixedly connected to the outer steel bar positioning clamp. The first clamp and the second clamp are locked by a locking mechanism. The hinge axis of the first clamp and the second clamp is parallel to the center line of the outer circumferential steel bar.

[0010] Preferably, the inner rebar positioning clamp includes a first crossbeam, on which multiple sets of inner rebar clamping arms are fixedly connected, and the first clamping groove is located on the inner rebar clamping arms.

[0011] Preferably, the opening of the first slot is oriented parallel to the center line of the inner circumferential reinforcing bar.

[0012] Preferably, the outer steel bar positioning clamp includes a second crossbeam, which is fixedly connected to the second clamping plate via a clamping rod, and the second slot is formed on the second crossbeam.

[0013] Preferably, the first clamping plate is perpendicular to the plane where the inner steel bar clamping arm is located, and the first clamping plate is hinged to the second clamping plate via a hinge.

[0014] Preferably, the locking mechanism includes a bolt and a nut, and the first clamping plate and the second clamping plate are locked together by the bolt and the nut.

[0015] Preferably, an end plate is fixedly connected to the bottom surface of the inner rebar positioning clamp, and a rebar stop is provided on the side of the end plate away from the inner rebar positioning clamp, and the rebar stop is located below the outer rebar positioning clamp.

[0016] Preferably, the end plate is detachably connected to the bottom surface of the reinforcing bar stop and the bottom surface of the inner reinforcing bar positioning clamp, respectively.

[0017] Preferably, the end plate is evenly distributed between the inner rebar positioning clamp and the rebar stop bar.

[0018] Preferably, a plurality of rectangular baffles are vertically arranged above the steel bar baffles, and a longitudinal steel bar placement area is formed between two adjacent rectangular baffles.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] By adjusting the opening angle of the first and second clamping plates, the relative positions of the inner and outer rebar positioning clamps can be effectively adjusted. The waterstop is then fixed using the first and second clamping plates. The inner and outer circumferential rebars are then respectively clamped into their corresponding slots, forming an inner circumferential rebar layer in the first slot and an outer circumferential rebar layer in the second slot. This invention, by controlling the relative movement of the first and second clamping plates, is simple to operate, accurately controls the spacing between rebar layers, and allows for adjustment of the distance between the inner and outer rebar layers. Simultaneously, it fixes the waterstop, ensuring good construction quality for the embedded waterstop. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention from a bottom view;

[0025] Figure 4 This is a schematic diagram of the waterstop clamp structure of the present invention;

[0026] Figure 5 This is a top view of the structure of the present invention.

[0027] Among them, 1. Inner rebar positioning clamp; 11. First slot; 12. First crossbeam; 13. Inner rebar clamping arm;

[0028] 2. Outer reinforcing bar positioning clamp; 21. Second slot; 22. Second crossbeam;

[0029] 3. Waterstop clamp; 31. First clamping plate; 32. Second clamping plate; 33. Hinge;

[0030] 4. Clamping linkage;

[0031] 5. Bolts;

[0032] 6. End plate;

[0033] 7. Reinforcing bar; 71. Rectangular baffle. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please refer to Figures 1 to 5 As shown, this embodiment provides a positioning device for the reinforcing bars of a low-profile wall arch, including an inner reinforcing bar positioning clamp 1, an outer reinforcing bar positioning clamp 2, and a waterstop clamp 3. The waterstop clamp 3 can clamp the waterstop. The inner reinforcing bar positioning clamp 1 includes a first slot 11, which is used to clamp the inner circumferential reinforcing bars. The outer reinforcing bar positioning clamp 2 includes a second slot 21, which is used to clamp the outer circumferential reinforcing bars. The opening of the second slot 21 faces the outer circumferential reinforcing bars. Preferably, the first slot 11 and the second slot 21 correspond one-to-one, that is, the number of first slots 11 and second slots 21 is the same, and the first slots 11 and second slots 21 are aligned with each other. The waterstop clamp 3 includes a first clamping plate 31 and a second clamping plate 32, which are hinged to each other. The first clamping plate 31 is fixedly connected to the inner steel bar positioning clamp 1, and the second clamping plate 32 is fixedly connected to the outer steel bar positioning clamp 2. The first clamping plate 31 and the second clamping plate 32 are locked by a locking mechanism. The hinge axis of the first clamping plate 31 and the second clamping plate 32 is parallel to the center line of the outer circumferential steel bar, which is also the axis of the outer circumferential steel bar. The center line coincides with the center of the outer circumferential steel bar.

[0037] Working Principle: The rebar positioning device for the low side wall arch is set up within the construction area. The opening angles of the first clamping plate 31 and the second clamping plate 32 are adjusted, causing relative movement between the inner rebar positioning clamp 1 and the outer rebar positioning clamp 2. A waterstop is placed between the first clamping plate 31 and the second clamping plate 32. When the clamps reach the preset position, the first clamping plate 31 and the second clamping plate 32 are locked by a locking mechanism, thus fixing the waterstop. Then, the inner and outer circumferential rebars are respectively clamped into the corresponding first slot 11 and second slot 21, forming an inner circumferential rebar layer in the first slot 11 and an outer circumferential rebar layer in the second slot 21. By controlling the relative movement of the first clamping plate 31 and the second clamping plate 32, the spacing between the rebar layers can be accurately controlled, allowing for adjustment of the distance between the inner and outer rebar layers. Simultaneously, the waterstop can be fixed, ensuring good construction quality for the embedded waterstop.

[0038] In one embodiment, the inner rebar positioning clamp 1 includes a first crossbeam 12, which is fixedly connected to a first clamping plate 31. Multiple sets of inner rebar clamping arms 13 are fixedly connected to the first crossbeam 12. Each inner rebar clamping arm 13 is provided with a first clamping groove 11, which is used to clamp the inner circumferential rebar. The first crossbeam 12 and the first clamping plate 31 are preferably fixedly connected by welding. The first crossbeam 12 and the inner rebar clamping arms 13 are also preferably fixedly connected by welding. The inner rebar clamping arms 13 are rectangular plate structures. The inner rebar clamping arms 13 are perpendicular to the axis of the first crossbeam 12. The first clamping plate 31 is perpendicular to the axes of both the inner rebar clamping arms 13 and the first crossbeam 12.

[0039] Multiple waterstop clamps 3 are provided and evenly arranged on the first crossbeam 12, and each waterstop clamp 3 can fix the waterstop.

[0040] In this embodiment, the opening of the first slot 11 is parallel to the center line of the inner circumferential reinforcing bar, and the axis of the first crossbeam 12 is parallel to the opening of the first slot 11. At the same time, the opening of the first slot 11 is perpendicular to the opening of the second slot 21. In use, the inner circumferential reinforcing bar is inserted into the inner reinforcing bar clamping arm 13 from the side end.

[0041] In one embodiment, the outer rebar positioning clamp 2 includes a second crossbeam 22, which is fixedly connected to a second clamping plate 32 via a clamping rod 4. When the second clamping plate 32 rotates via a hinge 33, the clamping rod 4 rotates synchronously with the second clamping plate 32, thereby adjusting the position of the outer rebar positioning clamp 2. Simultaneously, the clamping rod 4 itself can be a telescopic structure, such as a hydraulic telescopic rod, allowing the outer rebar positioning clamp 2 to adjust its position through telescopic movement. A second slot 21 is directly formed on the second crossbeam 22 and is evenly distributed on the second crossbeam 22. Simultaneously, a first slot 11 is also evenly distributed on the first crossbeam 12, and the second crossbeam 22 is an I-beam structure.

[0042] In this embodiment, the first clamping plate 31 is perpendicular to the plane where the inner steel bar clamping arm 13 is located. The first clamping plate 31 is hinged to the second clamping plate 32 by a hinge 33. The angle between the first clamping plate 31 and the second clamping plate 32 can be adjusted by the hinge 33. The hinge 33 is fixedly installed at the top of the first clamping plate 31.

[0043] In one embodiment, the locking mechanism includes a bolt 5 and a nut. Threaded holes are provided on both the first clamping plate 31 and the second clamping plate 32. After the bolt 5 passes through the first clamping plate 31 and the second clamping plate 32, it is locked by the nut, thereby providing a limit on the first clamping plate 31 and the second clamping plate 32. A clamping rod 4 is connected to the top of the second clamping plate 32, and the connection position between the clamping rod 4 and the second clamping plate 32 is preferably located between the hinge 33 and the threaded hole. By controlling the length of the first clamping plate 31 and the second clamping plate 32 themselves, the height of the outer rebar positioning clamp 2 can be controlled. By controlling the length of the clamping rod 4, the extension amount of the outer rebar positioning clamp 2 can be controlled.

[0044] In one embodiment, an end plate 6 is fixed on the bottom surface of the inner rebar positioning clamp 1. The end plate 6 is preferably a rectangular piece. A rebar stop 7 is provided on the side of the end plate 6 away from the inner rebar positioning clamp 1. The rebar stop 7 is located below the outer rebar positioning clamp 2. When the outer circumferential rebar is engaged in the second slot 21, the outer circumferential rebar can abut against the bottom of the rebar stop 7, providing a limit for the outer circumferential rebar.

[0045] In this embodiment, the top of the end plate 6 is provided with a snap-fit ​​groove. The end plate 6 snaps into the bottom surface of the rebar stop 7 and the bottom surface of the inner rebar positioning clamp 1 through the snap-fit ​​groove. The end plate 6 can connect the rebar stop 7 and the inner rebar positioning clamp 1.

[0046] In this embodiment, the end plate 6 is evenly distributed between the inner rebar positioning clamp 1 and the rebar stop 7. The end plate 6 can effectively support the rebar positioning device of the low side wall arch.

[0047] In this embodiment, a plurality of rectangular baffles 71 are vertically arranged above the rebar baffle 7. The rectangular baffles 71 are evenly arranged, and a longitudinal rebar placement area is formed between two adjacent rectangular baffles 71. The longitudinal rebar is arranged in this area, and the rectangular baffles 71 can provide a limit for the longitudinal rebar.

[0048] The short-side wall arch reinforcement positioning device of this invention is flexible, easy to operate, and reusable. It can provide support for the inner and outer circumferential reinforcements, thereby replacing some of the longitudinal support reinforcements, reducing waste caused by auxiliary reinforcements, and saving costs. Furthermore, it can effectively control the distance between adjacent reinforcements, eliminating the need for manual adjustment and preventing uneven reinforcement spacing, making construction convenient and quick. The spacing of the circumferential reinforcement layers can be adjusted through the cooperation of the waterstop clamp 3 and the clamp connecting rod 4, making it suitable for reinforcement pre-positioning of different lining grades. The combination of the clamp and the arch formwork can effectively control the thickness of the reinforcement protective layer, solving the problems of uneven longitudinal embedded steel edge waterstops and misaligned embedment positions and heights.

[0049] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A positioning device for the reinforcing steel bars of a low-profile sidewall arch, characterized in that, It includes an inner steel bar positioning clamp (1), an outer steel bar positioning clamp (2), and a waterstop clamp (3) for clamping the waterstop. The inner rebar positioning clamp (1) includes a plurality of first slots (11) for clamping the inner circumferential rebar; the outer rebar positioning clamp (2) includes a plurality of second slots (21) for clamping the outer circumferential rebar, the opening of the second slot (21) facing the outer circumferential rebar; The waterstop clamp (3) includes a first clamp (31) and a second clamp (32) that are hinged to each other. The first clamp (31) is fixedly connected to the inner steel bar positioning clamp (1), and the second clamp (32) is fixedly connected to the outer steel bar positioning clamp (2). The first clamp (31) and the second clamp (32) are locked by a locking mechanism. The hinge axis of the first clamp (31) and the second clamp (32) is parallel to the center line of the outer circumferential steel bar. The inner steel bar positioning clamp (1) includes a first crossbeam (12), the first crossbeam (12) is fixedly connected to the first clamp (31), and multiple sets of inner steel bar clamping arms (13) are fixedly connected on the first crossbeam (12), and the first clamping groove (11) is located on the inner steel bar clamping arm (13). The outer steel bar positioning clamp (2) includes a second crossbeam (22), which is fixedly connected to the second clamping plate (32) through a clamping rod (4), and the second slot (21) is opened on the second crossbeam (22); The first clamping plate (31) is perpendicular to the plane of the inner steel bar clamping arm (13), and the first clamping plate (31) is hinged to the second clamping plate (32) by a hinge (33).

2. The short side wall arch reinforcement positioning device according to claim 1, characterized in that, The opening of the first slot (11) is parallel to the center line of the inner circumferential reinforcing bar.

3. The short side wall arch reinforcement positioning device according to claim 1, characterized in that, The locking mechanism includes a bolt (5) and a nut, and the first clamping plate (31) and the second clamping plate (32) are locked together by the bolt (5) and the nut.

4. The short side wall arch reinforcement positioning device according to claim 1, characterized in that, The bottom surface of the inner rebar positioning clamp (1) is fixedly connected to an end plate (6), and a rebar stop (7) is provided on the side of the end plate (6) away from the inner rebar positioning clamp (1). The rebar stop (7) is located below the outer rebar positioning clamp (2).

5. The short side wall arch reinforcement positioning device according to claim 4, characterized in that, The end plate (6) is detachably connected to the bottom surface of the steel bar stop (7) and the bottom surface of the inner steel bar positioning clamp (1).

6. The short side wall arch reinforcement positioning device according to claim 5, characterized in that, The end plate (6) is evenly arranged between the inner steel bar positioning clamp (1) and the steel bar stop (7).

7. The short side wall arch reinforcement positioning device according to claim 5, characterized in that, Multiple rectangular baffles (71) are vertically arranged above the steel bar baffle (7), and a longitudinal steel bar placement area is formed between two adjacent rectangular baffles (71).

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