Auxiliary positioning device for arch structure concrete pouring elevation control

Abstract

The utility model discloses an arch structure concrete pouring elevation control auxiliary positioning device which comprises a plurality of lower steel bar supporting legs, a middle connecting steel frame and an upper wire hanging structure, the middle connecting steel frame is horizontally arranged, the lower steel bar supporting legs are connected with the middle connecting steel frame in a welded mode, and the upper wire hanging structure is connected with the lower steel bar supporting legs in a welded mode. The upper thread hanging structure comprises a stand column and thread hooks, the stand column is welded to the top end of the middle connecting net frame, the two positioning devices are arranged, a first positioning cotton thread is bound between the two thread hooks, a circle of grooves are formed in the positions, vertically corresponding to the thread hooks, of the middle connecting net frame, and a second positioning cotton thread is bound between the grooves of the two positioning devices. And the first positioning cotton thread and the second positioning cotton thread vertically correspond to form a positioning plane. The measuring tape is straightened to be attached to the two positioning cotton threads to guarantee the measuring perpendicularity, the measuring tape is used for measuring the elevation of the concrete pouring face so that the elevation can be controlled, accurate control over the elevation is achieved, and the device is welded through reinforcing steel bars and can be repeatedly used for multiple construction sites.

Description

Technical Field

[0001] The utility model belongs to the field of concrete pouring tools, in particular to an auxiliary positioning device for controlling the elevation of concrete pouring of an arched structure. Background Art

[0002] Nowadays, there are more and more antique buildings, which have higher requirements for the construction quality and appearance of cast-in-place concrete arch bridges. In the construction of arch bridges, the arch span structure is the top priority and one of the difficulties in construction. Nowadays, there are more and more antique buildings, which have higher requirements for the construction quality and appearance of cast-in-place concrete arch bridges. In the construction of arch bridges, the arch span structure is the top priority and one of the difficulties in construction.

[0003] There are two difficulties for arch structures. One is that there are fewer vertical steel bars, resulting in few available positioning points and large spacing between them. The other is that it is difficult to ensure that the measuring instrument is perpendicular to the concrete surface during measurement. Utility Model Content

[0004] The utility model provides an auxiliary positioning device for controlling the elevation of concrete pouring of an arched structure, which is used to solve the technical problem of low precision in controlling the elevation of concrete pouring.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an auxiliary positioning device for controlling the elevation of concrete pouring of an arched structure, comprising a lower steel support leg, a middle connecting steel frame and an upper hanging wire structure, wherein a plurality of lower steel support legs are provided, the middle connecting grid is arranged horizontally, the lower steel support leg and the middle connecting grid are welded and connected, the upper hanging wire structure comprises a column and a wire hook, the column is welded to the top of the middle connecting grid, two positioning devices are provided, a first positioning cotton thread is tied between the two wire hooks, a circle of grooves is provided at positions corresponding to the upper and lower positions of the wire hooks on the middle connecting grid, a second positioning cotton thread is tied between the grooves of the two positioning devices, and the first positioning cotton thread and the second positioning cotton thread correspond to each other up and down to form a positioning plane.

[0006] By adopting the above technical solution, two auxiliary positioning devices are formed into a group, and the auxiliary positioning devices are inserted into the concrete to ensure that the lower positioning feet are firmly in contact with the formwork; two positioning cotton threads are tied to the auxiliary positioning devices and straightened; the tape measure is straightened and fitted to the two positioning cotton threads to ensure the verticality of the measurement, and the elevation of the concrete casting surface is measured with the tape measure, thereby achieving precise control of the elevation. This device is welded with steel bars and can be repeatedly used in multiple construction sites, and the material itself is recyclable.

[0007] Preferably, the middle connecting steel frame includes a square outer frame and a cross connecting inner rod, the cross of the connecting inner rod is the diagonal of the square outer frame, the column is welded at the intersection of the connecting inner rod, and the groove is located on one side of the outer frame.

[0008] By adopting the above technical solution, the middle connecting steel frame can realize the connection between the lower steel bar legs and the upper hanging wire structure, and has a simple structure, convenient manufacturing and high structural strength.

[0009] Preferably, the wire hook is in a U-shape that bends upward and then returns to a horizontal position.

[0010] By adopting the above technical solution, the first positioning cotton thread is not easy to fall off during use and is easy to be positioned vertically.

[0011] Preferably, the number of the lower reinforcement legs is four and they are respectively arranged at the bottom of the four corners of the outer frame.

[0012] By adopting the above technical solution, better support can be provided.

[0013] Preferably, the height difference between the first positioning cotton thread and the second positioning cotton thread is 100 mm.

[0014] By adopting the above technical solution, if the height difference is too small, it is easy to ensure the verticality of the tape measure, and if the height difference is too large, it is easy to waste materials. The height difference spacing of this embodiment is reasonable, which can better ensure the verticality of the tape measure and save materials.

[0015] The beneficial effects of the utility model are embodied in: two auxiliary positioning devices form a group, and the auxiliary positioning devices are inserted into the concrete to ensure that the lower positioning feet are firmly in contact with the formwork; two positioning cotton threads are tied to the auxiliary positioning devices and straightened; the tape measure is straightened and fits the two positioning cotton threads to ensure the verticality of the measurement, and the elevation of the concrete casting surface is measured with the tape measure, thereby realizing precise control of the elevation. The device is welded with steel bars and can be repeatedly used in multiple construction sites, and the material itself can be recycled.

[0016] Other features and advantages of the utility model will be described in the subsequent description, and in part will become apparent from the description, or be understood by implementing the utility model; the main purpose and other advantages of the utility model can be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the use of two sets of auxiliary positioning devices in an embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of an auxiliary positioning device according to an embodiment of the utility model.

[0019] Figure numerals: 1. Lower steel support leg; 2. Middle connecting steel frame; 21. Groove; 22. Outer frame; 23. Connecting inner rod; 3. Upper hanging wire structure; 31. Post; 32. Wire hook; 4. First positioning cotton thread; 5. Second positioning cotton thread. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be interpreted as limiting the technical solution of the present invention.

[0021] Combination Figure 1 and Figure 2 The auxiliary positioning device for controlling the elevation of concrete pouring of an arched structure comprises a lower steel support leg 1, a middle connecting steel frame 2 and an upper hanging wire structure 3. The lower steel support leg 1 is provided with a plurality of them, and the middle connecting grid is arranged horizontally. The lower steel support leg and the middle connecting grid are welded and connected, and the upper hanging wire structure 3 comprises a column 31 and a wire hook 32. The column 31 is welded to the top of the middle connecting grid. Two positioning devices are provided, and a first positioning cotton thread 4 is tied between the two wire hooks 32. A circle of grooves 21 are provided at positions corresponding to the wire hooks 32 on the middle connecting grid, and a second positioning cotton thread 5 is tied between the grooves 21 of the two positioning devices. The first positioning cotton thread 4 and the second positioning cotton thread 5 correspond to each other up and down to form a positioning plane.

[0022] Two auxiliary positioning devices form a group. Insert the auxiliary positioning devices into the concrete to ensure that the lower positioning feet are firmly in contact with the formwork. Tie two positioning cotton threads on the auxiliary positioning devices and straighten them. Straighten the measuring tape and fit it against the two positioning cotton threads to ensure the verticality of the measurement. Use the measuring tape to measure the elevation of the concrete casting surface, thereby achieving precise control of the elevation. This device is made of welded steel bars and can be repeatedly used in multiple construction sites. The material itself is recyclable.

[0023] The middle connecting steel frame 2 includes a square outer frame 22 and a cross connecting inner rod 23. The cross of the connecting inner rod 23 is the diagonal of the square outer frame 22. The column 31 is welded at the intersection of the connecting inner rod 23. The groove 21 is located on one side of the outer frame 22. The middle connecting steel frame 2 can realize the connection between the lower steel bar support leg 1 and the upper hanging wire structure 3. It has a simple structure, is easy to manufacture, and has high structural strength.

[0024] The wire hook 32 is in a U-shape that bends upward and then turns back to a horizontal shape, so that the first positioning cotton wire 4 is not easy to be separated during use and can be easily positioned vertically.

[0025] The number of lower reinforcement legs 1 is four and they are respectively arranged at the bottom of the four corners of the outer frame 22, so as to provide better support.

[0026] The height difference between the first positioning cotton thread 4 and the second positioning cotton thread 5 is 100 mm. If the height difference is too small, it will be difficult to ensure the verticality of the tape measure, and if the height difference is too large, it will easily waste materials. The height difference spacing in this embodiment is reasonable, which can better ensure the verticality of the tape measure and save materials.

[0027] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field thinks of within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary positioning device for controlling the elevation of concrete pouring of an arched structure, characterized in that: The invention comprises a lower steel support leg (1), a middle connecting steel frame (2) and an upper wire hanging structure (3), wherein the lower steel support leg (1) is provided with a plurality of them, the middle connecting grid frame is arranged horizontally, the lower steel support leg and the middle connecting grid frame are welded and connected, the upper wire hanging structure (3) comprises a column (31) and a wire hook (32), the column (31) is welded to the top of the middle connecting grid frame, two positioning devices are provided, a first positioning cotton thread (4) is tied between the two wire hooks (32), a circle of grooves (21) are provided at positions corresponding to the wire hooks (32) above and below the middle connecting grid frame, a second positioning cotton thread (5) is tied between the grooves (21) of the two positioning devices, and the first positioning cotton thread (4) and the second positioning cotton thread (5) correspond to each other above and below to form a positioning plane.

2. The arch structure concrete pouring elevation control auxiliary positioning device according to claim 1 is characterized in that: The middle connecting steel frame (2) comprises a square outer frame (22) and a cross connecting inner rod (23), the cross of the connecting inner rod (23) is a diagonal of the square outer frame (22), the column (31) is welded at the intersection of the connecting inner rod (23), and the groove (21) is located on one side of the outer frame (22).

3. The arch structure concrete pouring elevation control auxiliary positioning device according to claim 2 is characterized in that: The wire hook (32) is in a U-shape that bends upward and returns to a horizontal position.

4. The arch structure concrete pouring elevation control auxiliary positioning device according to claim 3 is characterized in that: The number of the lower steel bar legs (1) is four and they are respectively arranged at the bottom of the four corners of the outer frame (22).

5. The arch structure concrete pouring elevation control auxiliary positioning device according to claim 4 is characterized in that: The height difference between the first positioning cotton thread (4) and the second positioning cotton thread (5) is 100 mm.

Images