Device for quickly and accurately mounting steel bars of positioning net of prefabricated box girder of high-speed railway

Abstract

The utility model discloses a high speed railway prefabricated box girder positioning net reinforcing steel bar fast and accurate installation device which comprises two sets of limiting pieces and a positioning piece, the multiple limiting pieces are arranged on the back faces of a middle clamp and a bottom clamp of a web frame in a one-to-one correspondence mode according to the set distance, and the two ends of the positioning piece are connected with the two limiting pieces which correspond up and down respectively. And steel bars are installed and positioned. The positioning parts are used as vertical rib mounting marks, when a reinforcing mesh is bound, the vertical ribs are positioned and bound in one-to-one correspondence to the positioning parts, the reinforcing mesh can be repeatedly used for products of the same type, the labor intensity of workers is reduced, labor is saved, the positioning parts are marked uniformly and obviously and always kept consistent, steel bars can be accurately mounted according to designed positions, binding deviation is prevented, and the production efficiency is improved. And normal stress of the beam body structure is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, and particularly relates to a device for quickly and accurately installing positioning mesh reinforcement bars of a prefabricated box girder for a high-speed railway. Background Art

[0002] With the large-scale construction of my country's high-speed railway network, the proportion of bridges is increasing. Box girders are mostly manufactured in prefabricated form. Due to the large number and type of steel bars in the box girder body, especially the denser and more numerous steel bars at the bottom plate and web positions, it is difficult to control the spacing between steel bars.

[0003] At present, domestic beam yards mostly fix the vertical reinforcement of steel mesh by manually measuring the spacing between steel bars and marking them with paint before tying the steel bars. However, tying the vertical reinforcement in this way will increase the workload of workers, and multiple manual measurements and positioning cannot guarantee the accuracy of the steel bar tying position, causing the steel bar tying position to deviate from the designed position, which affects the stress of the beam structure. Utility Model Content

[0004] The purpose of the utility model is to propose a fast and accurate installation device for positioning mesh steel bars of high-speed railway prefabricated box beams, which can quickly and accurately locate steel bar installation, improve installation efficiency, and ensure that the steel bars are installed in the designed position.

[0005] The technical solution adopted by the utility model is a device for quickly and accurately installing the steel bars of the positioning mesh of the prefabricated box girder of a high-speed railway, including a limiter and a positioning member. The limiters are provided with two groups, and the multiple limiters are respectively arranged on the back of the middle clamp and the bottom clamp of the web frame according to the set distance. The two ends of the positioning member are respectively connected to the two corresponding limiters above and below to position the steel bars for installation.

[0006] Furthermore, the above-mentioned limiting component includes a connecting rod, a limiting block is provided at the head end of the connecting rod, and a connecting block is provided at the end. The connecting block is detachably fixedly connected to the back of the middle fixture or the bottom fixture.

[0007] Furthermore, the positioning member is a steel cable, and both ends of the steel cable are provided with movable sleeves, which are connected to the limiting member through the movable sleeves.

[0008] Furthermore, an adjusting member is provided between the above-mentioned limiting member and the middle fixture or the bottom fixture. The adjusting member is detachably fixedly connected to the middle fixture or the bottom fixture, and the limiting member is slidably connected to the adjusting member.

[0009] Furthermore, the above-mentioned connecting block is provided with a sliding part downward, and a slot is vertically opened in the middle of the sliding part to form an inner caliper and an outer caliper, and the slot passes through the bottom end of the sliding part; the back of the adjusting part is bolted to the middle fixture or the bottom fixture, and a 7-shaped slide groove is opened on the front of the adjusting part. The sliding part is engaged with the adjusting part through the slot and the inner caliper is located in the slide groove, and the outer caliper is located outside the slide groove. A threaded hole is opened on the outer caliper, and a bolt is passed through the threaded hole and tightened to contact the front of the adjusting part to fix the limit part.

[0010] Furthermore, rubber layers are provided on opposite sides of the inner caliper and the outer caliper.

[0011] Furthermore, a scale line is provided on the upper front portion of the adjusting member, and a positioning mark is provided on the middle portion of the top end of the connecting rod.

[0012] Compared with the existing technology, the beneficial effect of the present invention is that, according to the design distance of the steel mesh, a fixed positioning piece is first set between the middle clamp and the bottom clamp of the web frame. The positioning piece serves as the installation mark of the vertical reinforcement. When the steel mesh is tied, the vertical reinforcements are positioned and tied one by one corresponding to the positioning piece. For the same type of product, it can be reused many times, reducing the labor intensity of workers and saving labor. The positioning piece marks are uniform and obvious and always remain consistent, which is conducive to the precise installation of the steel bars according to the designed position, preventing tying deviations, and ensuring that the beam structure is under normal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a front view diagram of the installation of the adjustment part and the limit part;

[0015] Figure 3 This is a side view of the installation of the adjustment part and the limit part;

[0016] Figure 4 It is a schematic diagram of the positioning part structure. DETAILED DESCRIPTION

[0017] The present invention will be further explained below with reference to the accompanying drawings to facilitate better understanding by those skilled in the art.

[0018] Example 1

[0019] like Figure 1-4 As shown, a device for quickly and accurately installing steel bars of a positioning mesh for a prefabricated box girder for high-speed railways comprises a limiter 1 and a positioning member 2. Two groups of limiters 1 are provided, and a plurality of limiters 1 are arranged on the back of the middle fixture 4 and the bottom fixture 5 of the web frame 3 in a one-to-one correspondence according to set distances. The two ends of the positioning member 2 are respectively connected to the two corresponding limiters 1 above and below to position the steel bars for installation.

[0020] Specifically, the position-limiting member 1 comprises a connecting rod 101, with a stopper 102 at the head end and a connecting block 103 at the tail end. The connecting block 103 is detachably fixedly connected to the back of the middle fixture 4 or the bottom fixture 5, allowing for easy removal when not needed. The positioning member 2 is a steel cable, with movable sleeves 201 at each end. These sleeves 201 engage the connecting rod 101 of the position-limiting member 1, and the stopper 102 holds the cable in place to prevent it from slipping. Using a steel cable for connection is quick and convenient, and it can be easily disassembled when not needed, making it convenient for winding and storage.

[0021] According to the designed distance of the steel mesh, a fixed positioning piece 2 is first set between the middle clamp 4 and the bottom clamp 5 of the web frame 3. The positioning piece 2 serves as the installation mark of the vertical reinforcement. When the steel mesh is tied, the vertical reinforcements are positioned and tied one by one corresponding to the positioning piece 2. For the same type of product, it can be reused many times, reducing the labor intensity of workers and saving labor. The markings of the positioning piece 2 are uniform and obvious and always consistent, which is conducive to the accurate installation of the reinforcement according to the designed position, preventing tying deviation and ensuring normal stress of the beam structure.

[0022] Example 2

[0023] Based on Example 1, an adjustment member 6 is provided between the stopper 1 and the middle fixture 4 or the bottom fixture 5. The adjustment member 6 is detachably fixedly connected to the middle fixture 4 or the bottom fixture 6, and the stopper 1 is slidably connected to the adjustment member 6. By sliding the stopper 1, the spacing between the positioning members 2 can be adjusted to meet the requirements of steel mesh binding for different types of products, thereby expanding the scope of application.

[0024] Furthermore, the connecting block 103 is provided with a sliding portion downwardly. A vertical slot is provided in the middle of the sliding portion 104 to form an inner caliper 1041 and an outer caliper 1042. The slot runs through the bottom end of the sliding portion 104. The back of the adjusting member 6 is connected to the middle clamp 4 or the bottom clamp bolt 6 to facilitate disassembly when not in use. The front of the adjusting member 6 is provided with a 7-shaped sliding groove 601. The sliding portion 104 is engaged with the adjusting member 6 through the slot, with the inner caliper 1041 located within the sliding groove and the outer caliper 1042 located outside the sliding groove. The outer caliper 1042 is provided with a threaded hole, and a bolt is tightened through the threaded hole to contact the front of the adjusting member 6 to fix the limit member 2. This structure satisfies the requirements of adjusting the position of the limit member 1 and the positioning member 2 while avoiding damage to the web frame 3 structure and facilitating disassembly. The inner caliper 1041 and the outer caliper 1042 of the sliding portion 104 clamp the adjusting member 6 to form a sliding motion, thereby ensuring the stability of the adjustment of the limit member 1.

[0025] In order to improve the connection firmness, rubber layers 7 are provided on opposite sides of the inner caliper 1041 and the outer caliper 1042 .

[0026] A scale line 602 is provided on the upper front portion of the adjusting member 6 , and a positioning mark 1011 is provided on the middle portion of the top end of the connecting rod 101 . The position of the limiting member 1 can be accurately determined by aligning the positioning mark 1011 with the scale line 602 .

[0027] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solution of the present invention without departing from the spirit and principles of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A device for quickly and accurately installing steel bars for positioning mesh of prefabricated box girders of high-speed railways, characterized in that: The invention comprises a limiting member (1) and a positioning member (2), wherein the limiting member (1) is provided with two groups, and a plurality of limiting members (1) are respectively installed on the back of the middle clamp (4) and the bottom clamp (5) of the web frame (3) in a one-to-one correspondence according to a set distance, and the two ends of the positioning member (2) are respectively connected to the two corresponding limiting members (1) above and below to mark the installation position of the steel bar.

2. The device for quickly and accurately installing the positioning mesh reinforcement bars of a high-speed railway prefabricated box girder according to claim 1 is characterized in that: The limiting member (1) comprises a connecting rod (101), a limiting block (102) is provided at the head end of the connecting rod (101), and a connecting block (103) is provided at the tail end. The connecting block (103) is detachably fixedly connected to the back of the middle fixture (4) or the bottom fixture (5).

3. The device for quickly and accurately installing steel bars of a positioning mesh for a high-speed railway prefabricated box girder according to claim 1 is characterized in that: The positioning member (2) is a steel cable, and both ends of the steel cable are provided with movable sleeves (201), which are sleeved with the limiting member (1) through the movable sleeves (201).

4. The device for quickly and accurately installing the positioning mesh reinforcement bars of a high-speed railway prefabricated box beam according to claim 2 is characterized in that: An adjusting member (6) is provided between the limiting member (1) and the middle fixture (4) or the bottom fixture (5); the adjusting member (6) is detachably fixedly connected to the middle fixture (4) or the bottom fixture (5); and the limiting member (1) is slidably connected to the adjusting member (6).

5. The device for quickly and accurately installing the positioning mesh reinforcement bars of a high-speed railway prefabricated box girder according to claim 4 is characterized in that: The connecting block (103) is provided with a sliding portion (104) downwardly, and a slot is vertically provided in the middle of the sliding portion (104) to form an inner caliper (1041) and an outer caliper (1042), and the slot passes through the bottom end of the sliding portion (104); the back of the adjusting member (6) is bolted to the middle fixture (4) or the bottom fixture (5), and a 7-shaped slide groove (601) is provided on the front of the adjusting member (6). The sliding portion (104) is engaged with the adjusting member (6) through the slot, and the inner caliper (1041) is located in the slide groove (601), and the outer caliper (1042) is located outside the slide groove (601). A threaded hole is provided on the outer caliper (1042), and a bolt is tightened through the threaded hole to contact the front of the adjusting member (6), so that the limit member (1) is fixed.

6. The device for quickly and accurately installing the positioning mesh reinforcement bars of a high-speed railway prefabricated box girder according to claim 5 is characterized in that: The inner caliper (1041) and the outer caliper (1042) are provided with rubber layers (7) on opposite sides.

7. The device for quickly and accurately installing the positioning mesh reinforcement bars of a high-speed railway prefabricated box girder according to claim 5 is characterized in that: A scale mark (602) is provided on the upper front portion of the adjusting member (6), and a positioning mark (1011) is provided on the middle portion of the top end of the connecting rod (101).

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