Device for producing reinforcement mats

Abstract

A device for producing reinforcement mats, characterized in that it comprises a horizontally arranged steel plate A (1) and a vertically arranged steel plate B (2), wherein adjacent ends of the steel plate A (1) and the steel plate B (2) are firmly connected to one another, and wherein a row of vertical threaded steel bars (3) is welded at regular intervals to the rear edge of the inner side surface of the steel plate A (1), and correspondingly a row of horizontal threaded steel bars (4) is welded at regular intervals to the rear edge of the inner side surface of the steel plate B (2), and wherein the vertical threaded steel bars (3) and the horizontal threaded steel bars (4) are interwoven in a lattice-like structure, and wherein a round steel bar (5) is welded at the intersection point of the front side surface of the lattice-like structure, and wherein the end portion of the round steel bar (5) is welded at the intersection point,and wherein the round steel (5) is aligned parallel to the steel plate A (1) and the steel plate B (2).

Description

TECHNICAL FIELD

[0001] The present utility model relates to an auxiliary device for the construction of the primary tunnel support, in particular a device for producing reinforcement mats. STATE OF THE ART

[0002] After tunnel excavation, the reinforcement mesh was installed during the primary tunnel support operation to prevent the surrounding rock from settling, causing loose rock to fall and injure people, and to reduce the loss caused by the gravity of the shotcrete during the suspended solidification process. After the initial shotcrete injection of the surrounding rock into the buried tunnel is completed, the reinforcement mesh is installed to prevent loose rock from falling and injuring people. At the same time, it promotes the adhesion and solidification of the shotcrete and reduces the loss of shotcrete due to falling. With the development of society and science and technology, the degree of mechanization is further improved, and the in-line welding machine for reinforcement mesh is used for the large-scale production of reinforcement mesh.Using an in-line welding machine to produce reinforcing mesh requires the purchase of the in-line welding machine, and the management, repair, and maintenance by skilled personnel will increase costs. Moreover, if the rebars are not straight, the qualification rate will decrease. For short tunnels with low labor input, in addition to purchasing or renting an in-line welding machine for reinforcing mesh, the use of skilled personnel is also required, which poses a challenge to controlling the project's production costs. For medium-sized and short tunnels with short construction periods and low labor input, the use of an in-line welding machine for reinforcing mesh can meet construction requirements, but it greatly increases construction and maintenance costs, which is not conducive to cost reduction and efficiency improvement of the enterprise. CONTENT OF THE PRESENT UTILITY MODEL

[0003] This utility model provides a device for producing reinforcement mesh to solve the technical problem that the use of an in-line welding machine for reinforcement mesh increases construction costs in medium-sized and short tunnels with short construction times and low labor costs. This not only allows for the efficient and effective use of welders, but also achieves the project goal of "reducing costs and increasing efficiency."

[0004] To solve the above technical problem, the present utility model uses the following technical solution: a device for producing reinforcing mesh, comprising a horizontally arranged steel plate A and a vertically arranged steel plate B, wherein adjacent ends of the steel plate A and the steel plate B are firmly connected to each other, and wherein a row of vertical threaded steel bars are welded at regular intervals to the rear edge of the inner side surface of the steel plate A, and correspondingly, a row of horizontal threaded steel bars are welded at regular intervals to the rear edge of the inner side surface of the steel plate B, and wherein the vertical threaded steel bars and the horizontal threaded steel bars are intertwined in a lattice-like structure, and wherein a round steel bar is welded at the intersection point of the front side surface of the lattice-like structure,and wherein the end portion of the round steel is welded at the intersection point, and wherein the round steel is aligned parallel to the steel plate A and the steel plate B, respectively.

[0005] Working principle: the reinforcing bars of the reinforcement mesh to be produced are each placed horizontally at equal intervals on the round steel, then the reinforcing bars to be produced are placed vertically and welded with the horizontally set reinforcing bars at the intersection points, and the round steel is used for positioning, thereby the reinforcing bars can be placed and welded in sequence to produce a reinforcement mesh.

[0006] Furthermore, an anti-fall support frame is connected to the rear side surface of the lattice-like structure formed by the vertical threaded steel bars and the horizontal threaded steel bars, wherein the round steel and the anti-fall support frame are located on both sides of the lattice-like structure, respectively.

[0007] Furthermore, a support frame of unequal height is welded to the bottom of the steel plate A, so that the entire device is inclined towards the back of the lattice-like structure.

[0008] Furthermore, the thickness of steel plate A and steel plate B is 6 mm-8 mm, respectively, the diameter of vertical threaded steel bars and horizontal threaded steel bars is 20 mm-22 mm, and the diameter of round steel is 8 mm.

[0009] Compared to the prior art, the present utility model has the following advantages: The present utility model requires only one welder to perform design work to meet the design task and quality requirements, while allowing the welder to operate flexibly, increasing personnel utilization. The overall design features low cost, simplicity, speed, ease of use, time-saving, convenience, and a high safety factor.

[0010] The device for rapid, low-cost production of reinforcing mesh according to the present utility model has the characteristics of low cost, simplicity, speed, and ease of application, as well as the advantages of time saving, convenience, and high safety factor. It can reduce the construction cost of medium and short tunnels with short construction period and low labor input, achieving the goal of "cost reduction and efficiency improvement." The device can be widely used in the production process of reinforcing mesh for medium and short tunnels. The applicability is quite strong, so the device can be widely used. SHORT DESCRIPTION OF THE DRAWING Fig. 1 shows a schematic diagram of the structure of an apparatus for producing reinforcing meshes according to the present utility model. List of reference symbols: 1 steel plate A 2 Steel plate B 3 Vertical threaded steel bar 4 Horizontal threaded steel bar 5 round steel 6 Unevenly high support frames EXAMPLE OF IMPLEMENTATION

[0011] The present utility model is explained in more detail below in connection with specific embodiments.

[0012] As in Fig.1, a device for producing reinforcement mats, comprising a horizontally positioned steel plate A 1 and a vertically positioned steel plate B 2, wherein adjacent ends of the steel plate A 1 and the steel plate B 2 are firmly connected to one another, and wherein a row of vertical threaded steel bars is welded at regular intervals to the rear edge of the inner side surface of the steel plate A 1 and, correspondingly, a row of horizontal threaded steel bars is welded at regular intervals to the rear edge of the inner side surface of the steel plate B 2, and wherein the vertical threaded steel bars 3 and the horizontal threaded steel bars 4 are interwoven in a lattice-like structure, and wherein a round steel bar 5 is welded at the intersection point of the front side surface of the lattice-like structure, and wherein the end portion of the round steel bar 5 is welded at the intersection point,and wherein the round steel 5 is aligned parallel to the steel plate A 1 and the steel plate B 2.,

[0013] Furthermore, an anti-fall support frame is connected to the rear side surface of the lattice-like structure formed by the vertical threaded steel bars 3 and the horizontal threaded steel bars 4, wherein the round steel 5 and the anti-fall support frame are located on both sides of the lattice-like structure, respectively.

[0014] Furthermore, an unevenly height support frame 6 is welded to the bottom of the steel plate A 1, so that the entire device is inclined towards the back of the lattice-like structure, with the left side being high and the right side being low, in order to facilitate the reinforcing bars to be stably placed on the device by utilizing their own gravity.

[0015] Furthermore, the thickness of the steel plate A 1 and the steel plate B 2 is 6 mm-8 mm, respectively, the diameter of the vertical threaded steel bars 3 and the horizontal threaded steel bars 4 is 20 mm-22 mm, and the diameter of the round steel is 8 mm. Manufacturing process: (1) Prepare the processing materials (6 mm-8 mm steel plate, 20 mm-22 mm threaded steel bar and 8 mm round steel); (2) Feeding the raw materials according to the design drawings to determine the size and length of the material; (3) The steel plate A1 and the steel plate B2 are welded vertically together; the round steel is welded to the edge of the steel plate to prevent scratches on the personnel; (4) Determine the spacing of the threaded steel bars (horizontal and vertical) according to the design drawings so that the vertical threaded steel bars and the horizontal threaded steel bars are perpendicular to each other; (5) Welding the round steel 5 perpendicular to the plane of the threaded steel bars; (6) on the left side of the steel plate below the device, an unevenly high support frame 6 can be arranged by means of the threaded steel bars, so that the entire device is inclined backward, at the same time, a tilt support is also arranged behind the device by means of the reinforcing bars in order to make the device robust and stable.

[0016] In use, the reinforcing bars of the reinforcement mesh to be manufactured are each placed horizontally at equal intervals on the round steel 5, then the reinforcing bars to be manufactured are placed vertically and welded with the horizontally set reinforcing bars at the intersection points, and the round steel 5 is used for positioning, thereby the reinforcing bars can be placed and welded in sequence to manufacture a reinforcement mesh.

[0017] The device of the present utility model is applied in the steel fabrication plant of the Wujiazui Tunnel, Section ZH11 of the Taiyuan Northwest Bypass. The device for rapid, low-cost fabrication of the reinforcement mesh has the characteristics of low cost, simplicity, speed, and ease of use, as well as the advantages of time-saving, convenience, and a high safety factor. It reduces construction costs for medium-sized and short tunnels with short construction periods and low labor input, thus achieving the goal of "cost reduction and efficiency improvement."

Claims

[1] Device for the production of reinforcement mats, characterized bythat it comprises a horizontally arranged steel plate A (1) and a vertically arranged steel plate B (2), wherein adjacent ends of the steel plate A (1) and the steel plate B (2) are firmly connected to one another, and wherein a row of vertical threaded steel bars (3) is welded at regular intervals to the rear edge of the inner side surface of the steel plate A (1), and correspondingly a row of horizontal threaded steel bars (4) is welded at regular intervals to the rear edge of the inner side surface of the steel plate B (2), and wherein the vertical threaded steel bars (3) and the horizontal threaded steel bars (4) are interwoven in a lattice-like structure, and wherein a round steel bar (5) is welded at the intersection point of the front side surface of the lattice-like structure, and wherein the end portion of the round steel bar (5) is welded at the intersection point,and wherein the round steel (5) is aligned parallel to the steel plate A (1) and the steel plate B (2). [2] Device for producing reinforcement mats according to claim 1, characterized by that an anti-fall support frame is connected to the rear side surface of the lattice-like structure formed by the vertical threaded steel bars (3) and the horizontal threaded steel bars (4), wherein the round steel (5) and the anti-fall support frame are each located on both sides of the lattice-like structure. [3] Device for producing reinforcement mats according to claim 1, characterized by that a support frame (6) of unequal height is welded to the bottom of the steel plate A (1), so that the entire device is inclined towards the back of the lattice-like structure. [4] Device for producing reinforcement mats according to claim 1, characterized bythat the thickness of steel plate A (1) and steel plate B (2) is 6 mm-8 mm each, the diameter of the vertical threaded steel bars (3) and the horizontal threaded steel bars (4) is 20 mm-22 mm and the diameter of the round steel bar is 8 mm.

Images