Novel steel bar elongation tester

Abstract

The utility model provides a novel steel bar elongation tester, which relates to the technical field of constructional engineering, and comprises a steel bar placing platform assembly, the steel bar placing platform assembly comprises a workpiece platform, three triangular grooves are uniformly distributed on the upper wall surface of the workpiece platform, steel bars to be detected are placed in the triangular grooves, and the steel bars to be detected are placed in the triangular grooves. A detection assembly is installed in the middle of the upper surface of the workpiece platform, and a control assembly is installed on the upper surface of the steel bar placing platform assembly. According to the utility model, the camera on the instrument head can shoot a group of pictures before and after stretching of the to-be-detected reinforcing steel bar, the distance between each to-be-detected reinforcing steel bar scale and punching points or scribing lines at two sides is accurately measured by adopting image identification and photogrammetry technologies, and the distance readings of the to-be-detected reinforcing steel bar scale and the punching points or scribing lines at two ends are respectively measured; and the programmable controller quickly and automatically calculates the elongation of the group of steel bars to be detected, so that the working efficiency and the test precision are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and more specifically, particularly relates to a novel steel bar elongation tester. Background Art

[0002] Construction engineering refers to the engineering entity formed by the construction of various types of buildings and their ancillary facilities and the installation of supporting lines, pipelines, and equipment. In these engineering entities, steel bars are used very frequently. In most engineering entities, they play an equally important role as concrete entities. Therefore, quality inspection is of utmost importance.

[0003] One of the tests for steel bars is the tensile test. During the tensile test, the elongation of the steel bar specimen needs to be measured. For a long time, rulers or vernier calipers have been used for measurement. However, due to the lack of auxiliary tools, not only is it difficult to align the specimen after being pulled apart, but the measurement is also inconvenient, and the test error and accuracy are difficult to control. In recent years, new equipment for steel bar elongation testing can only perform one steel bar elongation test at a time, and both the test detection and data processing require a large amount of manual participation, which reduces the efficiency of the steel bar elongation test.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a new type of steel bar elongation tester is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a novel steel bar elongation tester to solve the above problems.

[0006] The purpose and effect of the new steel bar elongation tester of the utility model are achieved by the following specific technical means:

[0007] A new type of steel bar elongation tester includes a steel bar placement platform assembly, the steel bar placement platform assembly includes a workpiece platform, three triangular grooves are evenly distributed on the upper wall surface of the workpiece platform, steel bars to be tested are placed in the triangular grooves, a detection assembly is installed in the middle of the upper surface of the workpiece platform, and a control assembly is installed on the upper surface of the steel bar placement platform assembly.

[0008] Furthermore, the detection component includes an L-shaped support frame fixedly installed in the middle of the upper surface of the workpiece platform, an instrument head is installed at the upper end of the L-shaped support frame, and a camera is installed in the middle of the bottom surface of the instrument head.

[0009] Furthermore, the control component includes a casing, a liquid crystal display screen is installed on the front wall of the casing, and a key control panel is installed on the front wall of the casing on one side of the liquid crystal display screen.

[0010] Furthermore, a programmable controller is installed in the inner cavity of the housing, and a data storage device is installed in the programmable controller.

[0011] Furthermore, the instrument head, camera, liquid crystal display screen, key control panel and data storage device are all electrically connected to the programmable controller.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model provides a stable fixed limit for a group of steel bars to be tested before and after being broken through three triangular grooves, which is convenient for aligning the two sections of the broken steel bars to be tested from the fracture, and is not easy to be dislocated and moved.

[0014] 2. The utility model can take a group of photos of the steel bars to be tested before and after stretching through the camera on the head of the instrument, and accurately measure the distance between the punch points or lines on both sides of the gauge length of each steel bar to be tested by using image recognition and photogrammetry technology, with an accuracy of 0.1mm or even higher. By measuring the distance readings of the punch points or lines on both ends of the gauge length of the steel bars to be tested, the gauge length of the steel bars to be tested before and after stretching and breaking can be quickly obtained, and the elongation of the group of steel bars to be tested can be quickly and automatically calculated through the programmable controller, thereby improving work efficiency and test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the utility model.

[0016] Figure 2 It is a front view of the utility model.

[0017] Figure 3 It is a schematic diagram of the control component of the utility model.

[0018] Figure 4 It is a side view of the utility model.

[0019] Figure 5 It is a schematic diagram of electrical connection of a programmable controller of the utility model.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Steel bar placement platform assembly; 2. Detection assembly; 3. Control assembly; 4. Steel bars to be detected; 101. Workpiece platform; 102. Triangular groove; 201. Instrument head; 202. Camera; 203. L-shaped support frame; 301. Casing; 302. LCD display; 303. Key control panel. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 5 As shown: a new type of steel bar elongation tester, including a steel bar placing platform component 1, the steel bar placing platform component 1 includes a workpiece platform 101, three triangular grooves 102 are evenly distributed on the upper wall surface of the workpiece platform 101, and the steel bars 4 to be tested are placed in the triangular grooves 102, a detection component 2 is installed in the middle of the upper surface of the workpiece platform 101, and a control component 3 is installed on the upper surface of the steel bar placing platform component 1.

[0027] On it, a triangular groove 102 is used to provide a stable fixing device for a group of steel bars 4 to be tested before and after being pulled off, so that the two ends of the steel bars 4 to be tested can be aligned at the fracture without being misplaced or moved, and a group of steel bars 4 to be tested can be placed at one time. After taking a photo of the test piece with the camera 202 on the instrument head 201, the punch point or the line of the gauge length of the steel bars 4 to be tested is located by the image recognition technology of the control component 3, and then the photogrammetry technology of the control component 3 is used to automatically measure the distance between the punch points or the lines at both ends of the gauge length of the steel bar test piece with high accuracy, and the gauge length of the steel bar tensile test piece before and after being pulled off is quickly obtained, and the elongation of the steel bar test piece is automatically calculated and displayed by the control component 3, thereby improving the work efficiency and test accuracy.

[0028] As attached Figure 1 To Attachment Figure 5 As shown, in some embodiments, the detection component 2 includes an L-shaped support frame 203 fixedly installed in the middle of the upper surface of the workpiece platform 101, an instrument head 201 is installed at the upper end of the L-shaped support frame 203, and a camera 202 is installed in the middle of the bottom surface of the instrument head 201. The camera 202 on the instrument head 201 can be used to capture a group of photos of the steel bar 4 to be detected before and after stretching.

[0029] As attached Figure 1 To Attachment Figure 5 As shown, in some embodiments, the control component 3 includes a housing 301, a liquid crystal display screen 302 is installed on the front wall of the housing 301, and a key control panel 303 is installed on the front wall of the housing 301 on one side of the liquid crystal display screen 302, instructions are input through the key control panel 303, and the input and output content is displayed through the liquid crystal display screen 302.

[0030] As attached Figure 1 To Attachment Figure 5 As shown, in some embodiments, a programmable controller is installed in the inner cavity of the housing 301, and a data storage device is installed in the programmable controller. The programmable controller receives and issues instructions and calculates results, and the data storage device on the programmable controller stores photos captured by the camera 202 on the instrument head 201, and stores and records experimental data and results.

[0031] As attached Figure 1 To Attachment Figure 5 As shown, in some embodiments, the instrument head 201, the camera 202, the LCD screen 302, the key control panel 303 and the data storage device are all electrically connected to the programmable controller, and the above components are centrally controlled by the programmable controller.

[0032] The specific use and function of this embodiment are as follows: 1. Place a group of unstretched steel bars 4 to be tested with gauge lengths flat in the triangular groove 102, and adjust the punch points or markings at both ends of the gauge lengths of the steel bars 4 to be tested to an upward position;

[0033] Second, input the detection command through the key control panel 303 and transmit it to the programmable controller, the programmable controller controls the instrument head 201 and the camera 202 to cooperate with each other to take pictures and save them in the data storage of the programmable controller, the system in the programmable controller automatically identifies and measures the distance from the leftmost punch point or line to the leftmost punch point or line on the gauge length of the steel bar 4 to be detected, displays it on the LCD screen 302 and automatically stores it in the data storage of the programmable controller, and records the reading L0i (i=1,2,3) with an accuracy of 0.1mm;

[0034] 3. Placing the group of steel bars 4 to be tested on a testing machine to complete a tensile test;

[0035] Fourth, the broken steel bars 4 to be tested are placed in the triangular groove 102 in the manner of step 1, and the punch points or markings at both ends of the gauge length of the steel bars 4 to be tested are adjusted to an upward position, and the two sections of the steel bars 4 to be tested are adjusted so that the fracture ends are accurately butted tightly, and the steel bars 4 to be tested can be stably kept in a butt state;

[0036] 5. Repeat step 4 to measure the distance L1 i (i = 1, 2, 3) between the leftmost punch point or line and the rightmost punch point or line of the group of steel bars to be tested after breaking, accurate to 0.1 mm;

[0037] 6. The elongation value of the group of steel bars 4 to be tested is calculated by the formula in the steel bar tensile test procedure embedded in the programmable controller and the data is displayed on the liquid crystal display 302, thereby completing the entire elongation measurement work.

[0038] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A new type of steel bar elongation tester, characterized by: The invention comprises a steel bar placement platform component (1), wherein the steel bar placement platform component (1) comprises a workpiece platform (101), three triangular grooves (102) are evenly distributed on the upper wall surface of the workpiece platform (101), steel bars (4) to be detected are placed in the triangular grooves (102), a detection component (2) is installed in the middle of the upper surface of the workpiece platform (101), and a control component (3) is installed on the upper surface of the steel bar placement platform component (1).

2. A new steel bar elongation tester as claimed in claim 1, characterized in that: The detection component (2) comprises an L-shaped support frame (203) fixedly mounted in the middle of the upper surface of the workpiece platform (101), an instrument head (201) being mounted on the upper end of the L-shaped support frame (203), and a camera (202) being mounted in the middle of the bottom surface of the instrument head (201).

3. A new type of steel bar elongation tester as claimed in claim 2, characterized in that: The control component (3) comprises a housing (301), a liquid crystal display screen (302) is mounted on the front wall of the housing (301), and a key control panel (303) is mounted on the front wall of the housing (301) on one side of the liquid crystal display screen (302).

4. A new type of steel bar elongation tester as claimed in claim 3, characterized in that: A programmable controller is installed in the inner cavity of the housing (301), and a data storage device is installed in the programmable controller.

5. A new type of steel bar elongation tester as claimed in claim 4, characterized in that: The instrument head (201), the camera (202), the liquid crystal display screen (302), the key control panel (303) and the data storage device are all electrically connected to the programmable controller.

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