Adjustable inverted arch steel bar positioning and fixing device

Abstract

The utility model relates to the field of inverted arch construction, and discloses an adjustable inverted arch steel bar positioning and fixing device which comprises at least two layers of steel bar fixers and a plurality of screw rods connected between the at least two layers of steel bar fixers so that the distance between the two layers of steel bar fixers can be adjusted. Two sets of square steel are arranged in each layer of steel bar fixing device in parallel, the opposite faces of the two sets of square steel abut against each other through a plurality of clamping grooves used for allowing steel bars to penetrate through, and the clamping grooves are evenly formed in the length direction of the square steel at intervals. Each group of screws penetrate through the two groups of steel bars in the steel bar fixer, and nuts are sleeved on the screws to lock the two groups of steel bars in the steel bar fixer; according to the adjustable inverted arch steel bar positioning and fixing device, the distance between the longitudinal main steel bars is adjusted through the clamping grooves evenly formed in the steel bar fixing device in the length direction of the square steel; and the layer distance between different reinforcing steel bar layers is adjusted through the screw rods and the nuts, so that the reinforcing steel bar distance and the thickness of a protective layer can be strictly controlled, and the design requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of inverted arch construction, in particular to an adjustable inverted arch reinforcement positioning and fixing device. Background Art

[0002] The uniformity of the spacing of the tunnel arch lining steel bars and the thickness of the steel bar protective layer are one of the key points of tunnel construction, which directly affect the quality of the secondary lining construction; among them, uneven steel bar spacing and excessive steel bar protective layer will affect the stress of the lining structure, and easily lead to concrete cracking and falling blocks, which will cause safety hazards; while too small a steel bar protective layer will cause exposed steel bars, rust and other hazards; therefore, the uniformity of the lining steel bar spacing and the qualified rate of the protective layer thickness have a very important impact on the overall quality of the tunnel secondary lining.

[0003] Therefore, during the construction process, the thickness of the steel bar protective layer needs to be strictly controlled to ensure that the qualified rate of the steel bar spacing and the protective layer thickness reaches the design and specification standards. Based on this, a positioning and fixing device for an inverted arch steel bar is provided. Utility Model Content

[0004] The utility model aims to overcome the disadvantages of the background technology and provide an adjustable inverted arch reinforcement positioning and fixing device.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] An adjustable inverted arch reinforcement positioning and fixing device comprises at least two layers of reinforcement fixing devices and a plurality of screw rods connected between the at least two layers of reinforcement fixing devices, so that the distance between the two layers of reinforcement fixing devices is adjustable;

[0007] Two groups of square steels are arranged in parallel in each layer of the steel bar fixer, and the opposite surfaces of the two groups of square steels are counteracted by a number of slots for passing the steel bars, and the slots are evenly spaced along the length direction of the square steels; each group of screw rods penetrates the two groups of square steels in the steel bar fixer, and nuts are sleeved on the screw rods to lock the two groups of square steels in the steel bar fixer.

[0008] Furthermore, in each group of the steel bar fixers, the plurality of slots are arranged on opposite surfaces of at least one group of the square steels.

[0009] Furthermore, the slot is rectangular, and the diameter of the inscribed circle matches the outer diameter of the steel bar.

[0010] Furthermore, a steel pad is provided at the same end of the plurality of screw rods.

[0011] Furthermore, a rubber cushion layer is provided on the bottom surface of the steel pad.

[0012] Furthermore, along the length direction of the square steel, the plurality of screw rods are evenly spaced and connected to the steel bar fixer.

[0013] Furthermore, the screw rod is passed through the steel bar fixer perpendicularly to the opposite surface of the square steel, and the nut is pressed against the back surface opposite to the opposite surface of the square steel.

[0014] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0015] In the adjustable inverted arch reinforcement positioning and fixing device of the utility model, the spacing between the longitudinal main reinforcements is adjusted by means of the slots evenly arranged along the length direction of the square steel in the reinforcement fixer. At the same time, the layer spacing between different reinforcement layers is adjusted by means of screws and nuts, so that the reinforcement spacing and the thickness of the protective layer can be strictly controlled to ensure that the design requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural principle diagram of the adjustable inverted arch reinforcement positioning and fixing device of the utility model;

[0017] Figure 2 It is an elevation view of the steel bar fixer of the utility model;

[0018] Figure 3 It is a plan view of the steel bar fixer of the utility model;

[0019] Icon: 1-rebar fixer, 10-square steel, 11-slot, 2-screw, 20-nut, 21-steel plate, 22-rubber pad, 3-rebar. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Reference Figures 1 to 3 The utility model discloses an adjustable inverted arch reinforcement positioning and fixing device, which comprises at least two layers of reinforcement fixing devices 1 and a plurality of screw rods 2 connected between the at least two layers of reinforcement fixing devices 1.

[0022] The number of layers of the steel bar fixers 1 varies according to the number of layers of the inverted arch steel bars in the construction requirements, and the number of layers of the steel bar fixers 1 is consistent with the number of layers of the inverted arch steel bars.

[0023] Among them, two sets of square steels 10 are arranged in parallel in each layer of steel bar fixer 1, and steel bars 3 are passed through between the two sets of square steels 10. Specifically, refer to Figure 2 and Figure 3 The opposite surfaces of the two groups of square steels 10 are abutted against each other by a plurality of slots 11 for inserting the steel bars 3, that is, in each group of steel bar fixers 1, a plurality of slots 11 can be arranged on the opposite surfaces of any group of square steels 10, or a plurality of slots 11 can be distributed on the opposite surfaces of the two groups of square steels 10, and the openings of the slots 11 can be closed by the mutual abutment between the two groups of square steels 10, and a group of steel bars 3 are inserted in each group of slots 11; by the uniform arrangement of the slots 11 along the length direction of the square steels 10, the spacing between the steel bars 3 in the steel bar layer can be made uniform.

[0024] Reference Figure 3 In order to enhance the fixing effect of the slot 11 on the steel bar 3 , optionally, the slot 11 is rectangular, and the diameter of the inscribed circle of the slot 11 matches the outer diameter of the steel bar 3 .

[0025] In this embodiment, the steel bar fixer 1 is provided with two layers, and the two layers of steel bar fixers 1 are connected by a plurality of screw rods 2, that is, the screw rods 2 are inserted into the two groups of steel bar fixers 1, so that the spacing between the two layers of steel bar fixers 1 can be adjusted. Specifically:

[0026] Reference Figure 1 Each set of screw rods 2 penetrates the two sets of square steels 10 in the steel bar fixer 1. Nuts 20 are sleeved on the screw rods 2 to lock the two sets of square steels 10 in the steel bar fixer 1 so that the slots 11 are tightly against between the two sets of square steels 10.

[0027] Among them, the screw rod 2 is inserted into the steel bar fixer 1 perpendicularly to the opposite side of the square steel 10, and the nut 20 is pressed against the back side opposite to the opposite side of the square steel 10; in addition, along the length direction of the square steel 10, a plurality of screw rods 2 are evenly spaced and connected to the steel bar fixer 1.

[0028] In addition, refer to Figure 1 A steel pad 21 is provided at the same end of the plurality of screw rods 2 , and a rubber pad layer 22 is also provided on the bottom surface of the steel pad 21 .

[0029] In one embodiment, the four groups of square steels 10 in the two groups of steel bar fixers 1 are all made of square steel with a specification of 50×50 mm, and the length can be set to 6 m or 12 m; in addition, a steel pad 21 with a diameter of 100 mm is set at the end of the screw 2 to support it on the waterproof board, and a rubber pad layer 22 is set between the steel pad 21 and the waterproof board to prevent damage to the waterproof board. The spacing between the steel bar layers is adjusted and locked by adjusting the position of the nut 20.

[0030] The installation and use method of the adjustable inverted arch reinforcement positioning and fixing device of the utility model are as follows:

[0031] Before installing the steel bars 3, a single square steel bar 10 welded with a slot 11 is first fixed by means of a measure steel bar and a screw rod 2, and then the first layer of annular main bars on the surrounding rock side are installed;

[0032] After the first layer of main reinforcement is installed, the second square steel 10 in the same reinforcement fixture 1 is installed in place to fix the first layer of annular main reinforcement in place;

[0033] The first square steel 10 with the slot 11 of the second layer is fixed in place by the screw 2, and then the second layer of annular main reinforcement is installed. After the reinforcement 3 is installed, the second square steel 10 in the same reinforcement fixture 1 is installed in place;

[0034] The fine-tuning nut 20 fixes the steel bar 3 in place, ensuring the longitudinal spacing and layer spacing of the steel bar 3. The installation of the inverted arch steel bar positioning and fixing device is completed.

[0035] In the utility model, the device is used to accurately locate and fix the steel bars 3 in the inverted arch, which solves the problems of uneven spacing of the longitudinal main bars of the inverted arch lining and difficult control of the spacing of the double-layer steel bars, improves the installation efficiency and accuracy of the steel bars 3, reduces manual operation errors, and reduces labor intensity.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable inverted arch reinforcement positioning and fixing device, characterized in that: It comprises at least two layers of steel bar fixers and a plurality of screw rods connected between the at least two layers of steel bar fixers, so that the distance between the two layers of steel bar fixers is adjustable; Two groups of square steels are arranged in parallel in each layer of the steel bar fixer, and the opposite surfaces of the two groups of square steels are counteracted by a number of slots for passing the steel bars, and the slots are evenly spaced along the length direction of the square steels; each group of screw rods penetrates the two groups of square steels in the steel bar fixer, and nuts are sleeved on the screw rods to lock the two groups of square steels in the steel bar fixer.

2. The adjustable inverted arch reinforcement positioning and fixing device according to claim 1 is characterized in that: In each group of the steel bar fixers, the plurality of slots are arranged on opposite surfaces of at least one group of the square steels.

3. The adjustable inverted arch reinforcement positioning and fixing device according to claim 1 or 2, characterized in that: The clamping groove is rectangular, and the diameter of the inscribed circle matches the outer diameter of the steel bar.

4. The adjustable inverted arch reinforcement positioning and fixing device according to claim 1, characterized in that: The same end of the plurality of screw rods is provided with a steel pad.

5. The adjustable inverted arch reinforcement positioning and fixing device according to claim 4 is characterized in that: The bottom surface of the steel pad is also provided with a rubber pad layer.

6. The adjustable inverted arch reinforcement positioning and fixing device according to claim 1, characterized in that: Along the length direction of the square steel, the plurality of screw rods are evenly connected to the steel bar fixer.

7. The adjustable inverted arch reinforcement positioning and fixing device according to claim 1, characterized in that: The screw rod is arranged on the steel bar fixer perpendicular to the opposite surface of the square steel, and the nut is pressed against the back surface opposite to the opposite surface of the square steel.

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