Reverse bending detection device for reinforcing steel bars on construction site

Abstract

The utility model discloses a steel bar reverse bending detection device on a construction site, which comprises a horizontal base, two supporting seats are fixed at the top of the base, and the two supporting seats are arranged in parallel; the two supporting seats are connected with rectangular block-shaped bending die blocks through pin shafts correspondingly, U-shaped long grooves are formed in the top faces of the bending die blocks, the U-shaped long grooves penetrate through the two ends of the bending die blocks, and the U-shaped long grooves are used for containing reinforcing steel bars. The U-shaped long grooves in the two bending die blocks are located in the same straight line. The top of the bending die block is in sliding connection with an inverted-U-shaped protective cover, and the position, directly facing the U-shaped long groove, of the protective cover is in an arched shape. The device further comprises a pressure applying part located over the center of the base, and the pressure applying part is used for applying loads to the steel bars. The protective cover is connected with the bending die block through the sliding structure, the steel bars are convenient to install and take out, the protective cover plays a role in protection, the steel bars are prevented from jumping off in the testing process, and the testing safety is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar detection devices, and in particular relates to a steel bar reverse bending detection device at a construction site. Background Art

[0002] With the country's increasing emphasis on construction project quality and safety in recent years, all incoming materials and components must undergo witnessed sampling and testing. With the upcoming implementation of GB / T1499.2-2018, "Steel for Reinforced Concrete Part 2: Hot-rolled Ribbed Bars," all steel grades with an E designation must undergo reverse bend testing, ensuring no cracks are present on the surface of the bent area.

[0003] In order to meet the testing laboratory's needs for reverse bending testing of hot-rolled ribbed steel bars, and in order to avoid purchasing a separate reverse device and occupying too much laboratory space, people began to design existing bending devices that can be used in conjunction with universal testing machines. The inventor designed a reverse bending device for use with a universal testing machine. In patent CN103884584A, the inventor designed a steel bar reverse bending device that can be used in conjunction with a universal testing machine with a downward pressure function. However, this reverse bending device has problems. It cannot restrain the steel bars, and there is a risk of the steel bars slipping, posing a safety hazard. Utility Model Content

[0004] The utility model provides a device for detecting reverse bending of steel bars at a construction site, aiming to solve the problem of the risk of steel bars slipping during reverse bending detection.

[0005] To this end, the present invention adopts the following technical solutions:

[0006] A construction site steel bar reverse bending detection device comprises a horizontal base, two support bases are fixed on the top of the base, and the two support bases are arranged in parallel;

[0007] The two support seats are respectively connected to rectangular block-shaped bending mold blocks through pin shafts. The top surface of the bending mold block is provided with a U-shaped long groove, which runs through both ends of the bending mold block and is used to place steel bars. The U-shaped long grooves on the two bending mold blocks are located on the same straight line. An inverted U-shaped protective cover is slidably connected to the top of the bending mold block, and the protective cover is arched at the position opposite to the U-shaped long groove.

[0008] Also included is a pressure applying member located just above the center of the base, the pressure applying member being used to apply a load to the steel bars.

[0009] Furthermore, guide grooves are provided on the left and right side surfaces of the bending mold block, and corresponding guide blocks are provided on the left and right inner side surfaces of the protective cover, and the guide blocks of the bending mold block are embedded in the guide grooves.

[0010] Furthermore, the bending mold block and the protective cover are both made of steel.

[0011] The beneficial effect of the utility model is that the protective cover is connected to the bending mold block through a sliding structure, which makes it easy to install and remove steel bars. The protective cover plays a protective role and prevents the steel bars from jumping out during testing, thereby greatly improving the safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the structural front view of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection between the protective cover and the bending mold block of the utility model;

[0014] Figure 3 It is a schematic diagram of the reverse bending of the steel bar of the utility model;

[0015] In the figure: 1-base, 2-support seat, 3-bending mold block, 4-protective cover, 5-U-shaped long groove, 6-pressure applying component. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0017] like Figures 1 to 3 As shown, a construction site steel bar reverse bending detection device includes a horizontal base 1, two support bases 2 are fixed on the top of the base 1, and the two support bases 2 are arranged in parallel.

[0018] The two support seats 2 are respectively connected with rectangular block-shaped bending mold blocks 3 through pin shafts. The top surface of the bending mold block 3 is provided with a U-shaped long groove 5, which runs through both ends of the bending mold block 3, and the U-shaped long groove 5 is used to place steel bars; the U-shaped long grooves 5 on the two bending mold blocks 3 are located on the same straight line; an inverted U-shaped protective cover 4 is slidably connected to the top of the bending mold block 3, and the position of the protective cover 4 facing the U-shaped long groove 5 is arched; guide grooves are provided on the left and right side surfaces of the bending mold block 3, and corresponding guide blocks are provided on the left and right inner sides of the protective cover 4. The guide blocks of the bending mold block 3 are embedded in the guide grooves, and the bending mold block 3 and the protective cover 4 are both made of steel.

[0019] The base 1 further comprises a pressure applying component 6 located just above the center of the base 1 , and the pressure applying component 6 is used to apply load to the steel bars.

[0020] The method of using the present invention is as follows: the two bending mold blocks 3 are adjusted to a horizontal state, the steel bar to be tested is placed in the U-shaped long groove 5, and the exposed lengths of both ends of the steel bar are equal; then the protective cover 4 is connected to the bending mold block 3, the protective cover 4 plays the role of protecting the steel bar, and then the pressure applying component 6 is turned on for testing.

Claims

1. A construction site steel bar reverse bending detection device, characterized in that: It comprises a horizontal base (1), two support bases (2) are fixed on the top of the base (1), and the two support bases (2) are arranged in parallel; A rectangular block-shaped bending mold block (3) is connected to each of the two support seats (2) via a pin shaft. A U-shaped long groove (5) is provided on the top surface of the bending mold block (3). The U-shaped long groove (5) passes through both ends of the bending mold block (3). The U-shaped long groove (5) is used to place steel bars. The U-shaped long grooves (5) on the two bending mold blocks (3) are located on the same straight line. An inverted U-shaped protective cover (4) is slidably connected to the top of the bending mold block (3). The protective cover (4) is arched at a position facing the U-shaped long groove (5). The utility model further comprises a pressure applying component (6) located just above the center of the base (1), and the pressure applying component (6) is used to apply load to the steel bar.

2. The construction site steel bar reverse bending detection device according to claim 1, characterized in that: The left and right side surfaces of the bending mold block (3) are provided with guide grooves, and the left and right inner side surfaces of the protective cover (4) are provided with corresponding guide blocks, and the guide blocks of the bending mold block (3) are embedded in the guide grooves.

3. The construction site steel bar reverse bending detection device according to claim 2, characterized in that: The bending mold block (3) and the protective cover (4) are both made of steel.

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