Reinforcing steel bar performance testing device for construction site quality detection

Abstract

The utility model belongs to the technical field of reinforcing steel bar testing devices, and relates to a reinforcing steel bar performance testing device for construction site quality detection, which comprises a bottom support frame, a working table is mounted on the bottom support frame, a connecting support frame is mounted in the middle of the top end of the working table close to the edge, and the connecting support frame is L-shaped. And first electric telescopic rods are installed in the middle and at the top of the connecting supporting frame correspondingly, pressure sensors are installed at the output ends of the first electric telescopic rods, V-shaped top blocks are connected to the pressure sensors, and supporting main plates are symmetrically installed in the middle of the top end of the workbench. Compression resistance, bending and tensile tests are completed through the same device, the V-shaped ejector block multidirectional pressure application design (Z-axis compression resistance and X-axis bending) and the worm gear and worm stretching mechanism work cooperatively, three purposes are achieved through one machine, and the problems that traditional equipment can only test single performance (such as stretching or bending), and multiple instruments need to be switched for multi-index detection are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel bar testing device technical field relates to a construction site quality detection steel bar performance testing device. BACKGROUND

[0002] Construction is the production activity of the implementation phase of engineering construction, and is the process of converting design drawings into actual buildings. The steel bar performance testing in construction site quality detection is a key link to ensure the safety and quality of building engineering structure. Through the testing device, the tensile strength, yield strength and elongation rate of the steel bar meet the design specifications, avoiding structural safety hazards caused by insufficient material performance.

[0003] Patent (CN210982074U) discloses a construction site quality detection steel bar performance testing device, which includes a base, a vertical plate, a fixed plate, a screw sleeve, a screw rod, a steel ball, a sliding block, a driving device, a clamping seat and a clamping groove. The utility model has the beneficial effects that the two ends of the steel bar length direction are respectively placed in the clamping grooves of the two clamping seats, the screw rod is driven to rotate by the external servo motor, the top block is lowered, the steel ball is tightly pressed against the steel bar, the downward pressure is applied to the steel bar, the downward stroke of the bending part of the steel bar is detected, the spacing of the two clamping seats is combined, the bending strength of the steel bar is calculated by the existing technology, the performance of the bending strength of the steel bar is detected, and the device is smaller and cheaper than the existing detection equipment, and is suitable for use in small and medium-sized construction sites.

[0004] When using the above technology, it is found that the existing technology has the following technical problems: the above device can only test single performance, such as steel bar compression test, when testing tensile test and bending test, multiple instruments need to be switched, which is time-consuming and laborious, and the above device lacks fixing structure at both ends when testing, which will cause the steel bar to be lifted at both ends due to the middle pressure during compression test, and then will be separated from the testing device, thereby affecting the test data, so an urgent need exists for a construction site quality detection steel bar performance testing device. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that only single performance can be tested when in use, such as steel bar compression test, multiple instruments need to be switched when testing tensile test and bending test, which is time-consuming and laborious, and the above device lacks fixing structure at both ends when testing, which will cause the steel bar to be lifted at both ends due to the middle pressure during compression test, and then will be separated from the testing device, thereby affecting the test data, so an urgent need exists for a construction site quality detection steel bar performance testing device.

[0006] The utility model discloses a construction site quality detection steel bar performance testing device, including bottom support frame, install the workstation on bottom support frame, the workstation top middle part near the edge department installs the connecting support frame, the connecting support frame sets up L -shaped, first electric telescopic handle is installed in the middle and top of connecting support frame respectively, the first electric telescopic handle output installs the pressure sensor, be connected with V -shaped top block on the pressure sensor, the workstation top middle part symmetry installs the support mainboard, be connected with fixed assembly on support mainboard.

[0007] The fixed assembly includes an auxiliary slide rail and a fixed plate, one end of the auxiliary slide rail is connected with the support mainboard, the end away from the support mainboard is connected with the fixed plate, a drive screw is rotatably connected to the inner side of the top of the fixed plate, one end of the drive screw away from the fixed plate is rotatably connected with the support mainboard, a threaded drive block is threadedly connected to the drive screw, a fixed block and a sliding block are respectively installed on the top and bottom of the threaded drive block, the sliding block is slidably connected with the auxiliary slide rail, a V-shaped placing groove is formed on one side of the fixed block, a clamping assembly is arranged on one side of the fixed block, and a drive assembly is arranged on the fixed plate.

[0008] The clamping assembly includes a C-shaped support plate, the C-shaped support plate is installed on one side of the fixed block, an adjusting screw is threadedly connected to the top of the C-shaped support plate, a hand wheel and an upper clamping plate are respectively installed on the top and bottom of the adjusting screw, and the upper clamping plate is arranged above the V-shaped placing groove formed in the fixed block.

[0009] The drive assembly includes a mounting box, a servo motor is installed in the mounting box, a worm is connected to the output shaft of the servo motor, the worm is rotatably connected in the mounting box, a worm wheel is meshingly connected to one side of the worm, and the worm wheel is installed on one end of the drive screw penetrating through the fixed plate.

[0010] A waste collection box is installed on the top of the bottom support frame, and the waste collection box is used to collect the tested steel bars.

[0011] Four heavy-duty universal wheels are installed on the bottom of the bottom support frame, and the four heavy-duty universal wheels are respectively arranged at the four corners of the bottom support frame.

[0012] Compared with the prior art, the utility model has the beneficial effects that: the same device can complete the compression, bending and stretching tests, the V-shaped top block multidirectional pressure design (Z-axis compression, X-axis bending) and the worm and worm gear stretching mechanism work together to realize "one machine with three functions", which solves the problem that the traditional equipment can only test single performance (such as stretching or bending) and multiple index detection needs to switch multiple instruments.

[0013] The arc-shaped upper clamping plate of the clamping assembly matches the V-shaped placement slot of the fixed block, and a "V+arc" combination is formed, three-point contact effectively inhibits the deviation or slipping of the steel bar, avoids the lifting of the two ends in the compression test, and the clamping distance of the upper clamping plate is adjusted, so that the device is convenient for adapting to a wider size of the steel bar. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is the overall structural schematic diagram of the present application.

[0016] Figure 2 It is the structural schematic diagram of the workbench of the present application.

[0017] Figure 3 It is the schematic diagram of the fixing assembly of the present application.

[0018] Figure 4 It is the structural schematic diagram of the connecting support frame of the present application.

[0019] Figure 5 It is the structural schematic diagram of the present application Figure 3 enlarged structure at A.

[0020] In the figure: 1, bottom support frame; 2, workbench; 3, support main plate; 4, auxiliary sliding rail; 5, sliding block; 6, threaded driving block; 7, fixed block; 8, V-shaped placement slot; 9, fixed plate; 10, driving screw; 12, C-shaped support plate; 13, adjusting screw; 14, upper clamping plate; 15, hand wheel; 16, mounting box; 17, servo motor; 18, worm; 19, worm gear; 20, connecting support frame; 21, first electric telescopic rod; 22, pressure sensor; 23, V-shaped top block; 24, heavy-duty universal wheel; 25, waste collection box. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0022] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings.

[0023] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0024] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] Embodiment 1

[0026] As Figures 1-5 shown, a reinforcing bar performance testing device for construction site quality detection, including bottom support frame 1, bottom support frame 1 is installed on the workbench 2, the workbench 2 top end middle part near the edge is installed with connecting support frame 20, connecting support frame 20 is set to L-shaped, the middle part and top part of connecting support frame 20 are installed with first electric telescopic rod 21 respectively, the output end of first electric telescopic rod 21 is installed with pressure sensor 22, pressure sensor 22 is connected with V-shaped top block 23, the top end middle part of workbench 2 is symmetrically installed with support mainboard 3, support mainboard 3 is connected with fixed assembly;Fixed assembly includes auxiliary slide rail 4 and fixed plate 9, one end of auxiliary slide rail 4 is connected with support mainboard 3, and the end away from support mainboard 3 is connected with fixed plate 9, the top inside of fixed plate 9 is rotatably connected with drive screw 10, the end away from fixed plate 9 of drive screw 10 is rotatably connected with support mainboard 3, threaded driving block 6 is screw-connected on drive screw 10, fixed block 7 and sliding block 5 are installed on the top and bottom of threaded driving block 6 respectively, sliding block 5 is slidably connected with auxiliary slide rail 4, V-shaped placing groove 8 is formed on fixed block 7, clamping assembly is arranged on one side of fixed block 7, drive assembly is arranged on fixed plate 9, clamping assembly includes C-shaped support plate 12, C-shaped support plate 12 is installed on one side of fixed block 7, adjusting screw 13 is screw-connected on the top of C-shaped support plate 12, hand wheel 15 and upper clamping plate 14 are installed on the top and bottom of adjusting screw 13 respectively, the bottom of upper clamping plate 14 is set to arc-shaped, so as to expand the clamping surface of clamping reinforcing bar, upper clamping plate 14 is arranged above V-shaped placing groove 8 formed in fixed block 7;

[0027] In operation, the steel bar compression resistance experiment is carried out: the steel bar is placed in the fixed block 7 on the two fixed assemblies, so that the steel bar is placed in the V-shaped placement groove 8 on the fixed block 7. The V-shaped placement groove 8 has the feature that the steel bar is automatically positioned on the central axis of the V-shaped placement groove 8. Then, the hand wheel 15 on the clamping assembly is rotated, the hand wheel 15 drives the adjusting screw 13 connected thereto to rotate, the adjusting screw 13 rotates on the C-shaped support plate 12 and drives the upper clamping plate 14 connected to the bottom of the C-shaped support plate 12 to move towards the bottom steel bar, so that the upper clamping plate 14 is clamped above the steel bar. Then, the V-shaped placement groove 8 on the fixed block 7 is matched, so that the two ends of the steel bar are fixed in the V-shaped placement groove 8, avoiding the two ends from being lifted and falling off during the compression resistance experiment. After the fixing is completed, the electric telescopic rod at the top of the connecting support frame 20 drives the V-shaped top block 23 at the bottom to move towards the steel bar, and then the V-shaped top block 23 at the bottom contacts the surface of the steel bar to apply pressure in the upper Z-axis direction. The pressure sensor 22 is responsible for recording the pressure. In cooperation with the bending degree of the steel bar, the compression yield of the steel bar is calculated.

[0028] In the bending experiment, the steel bar is fixed as above, and then the electric telescopic rod on one side of the connecting support frame 20 drives the V-shaped top block 23 to move towards the side surface of the steel bar, so that the V-shaped top block 23 contacts the side surface of the steel bar. Then, the electric telescopic rod applies pressure in the X-axis direction to the steel bar to check the yield strength of the steel bar when the steel bar is subjected to pressure in the X-axis direction.

[0029] The same device is used to complete the compression and bending experiments, without the need to switch equipment. The V-shaped top block 23 moves in the Y-axis (compression) and Z-axis (bending) directions, and cooperates with the pressure sensor 22 to realize multi-directional pressure application, thereby improving the efficiency of the steel bar inspection.

[0030] Embodiment 2

[0031] As shown in Figures 1-5 , the driving assembly includes a mounting box 16, a servo motor 17 is installed in the mounting box 16, a worm 18 is connected to the output shaft of the servo motor 17, the worm 18 is rotatably connected in the mounting box 16, a worm wheel 19 is meshingly connected to one side of the worm 18, the worm wheel 19 is installed on one end of the drive screw 10 penetrating through the fixed plate 9, and the self-locking between the worm wheel 19 and the worm 18 avoids self-rotation of the drive screw.

[0032] In work, the reinforcing steel bars are placed on the fixed blocks 7, so that the two clamping assemblies fix the two ends of the reinforcing steel bars, then the servo motor 17 drives the worm 18 to rotate, the worm 18 drives the worm wheel 19 to rotate, the worm wheel 19 drives the driving lead screw 10 connected therewith to be connected, so that the driving lead screw 10 drives the threaded driving block 6 to move in the horizontal direction, and then the threaded driving block 6 synchronously drives the reinforcing steel bars fixed by the fixed blocks 7 to move horizontally, the sliding block 5 at the bottom of the threaded driving block 6 synchronously slides on the auxiliary slide rail 4, the two driving assemblies stretch the two ends of the reinforcing steel bars on the fixed assembly, and then the tensile test of the reinforcing steel bars is completed.

[0033] The bottom support frame 1 is provided with a waste collecting box 25 at the top, which is used for collecting the reinforcing steel bars after the test; the reinforcing steel bars after the test are directly put into the collecting box, so that secondary cleaning caused by scattering on the ground is avoided, and manual carrying time is reduced; the bottom support frame 1 is provided with four heavy-duty universal wheels 24 at the bottom, and the four heavy-duty universal wheels 24 are arranged at the four corners of the bottom support frame 1 respectively; the four-wheel independent steering design makes the equipment flexible to steer on the narrow construction site, so that the device can be quickly and conveniently moved to the predetermined position.

[0034] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation manner. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalent thereof.

Claims

1. A steel bar performance testing device for construction site quality detection, comprising a bottom support frame (1), characterized in that: The bottom support frame (1) is provided with a workbench (2), and the middle part of the top end of the workbench (2) is provided with a connecting support frame (20) near the edge, the connecting support frame (20) is L-shaped, and the middle part and the top part of the connecting support frame (20) are respectively provided with a first electric telescopic rod (21), and the output end of the first electric telescopic rod (21) is provided with a pressure sensor (22), and the pressure sensor (22) is connected with a V-shaped top block (23), and the middle part of the top end of the workbench (2) is symmetrically provided with a support main plate (3), and the support main plate (3) is connected with a fixing assembly.

2. The steel bar performance testing device for construction site quality detection according to claim 1, characterized in that: The fixing assembly comprises an auxiliary sliding rail (4) and a fixing plate (9), one end of the auxiliary sliding rail (4) is connected with the support main plate (3), the end away from the support main plate (3) of the auxiliary sliding rail (4) is connected with the fixing plate (9), the inner side of the top of the fixing plate (9) is rotatably connected with a driving screw rod (10), one end of the driving screw rod (10) away from the fixing plate (9) is rotatably connected with the support main plate (3), the driving screw rod (10) is threadedly connected with a threaded driving block (6), and the top and the bottom of the threaded driving block (6) are respectively provided with a fixed block (7) and a sliding block (5), the sliding block (5) is slidably connected with the auxiliary sliding rail (4), and the fixed block (7) is provided with a clamping assembly on one side, and the fixing plate (9) is provided with a driving assembly.

3. The steel bar performance testing device for construction site quality detection according to claim 2, characterized in that: The clamping assembly comprises a C-shaped support plate (12), the C-shaped support plate (12) is installed on one side of the fixed block (7), the top of the C-shaped support plate (12) is threadedly connected with an adjusting screw rod (13), and the top and the bottom of the adjusting screw rod (13) are respectively provided with a hand wheel (15) and an upper clamping plate (14), and the upper clamping plate (14) is arranged above the V-shaped placing groove (8) of the fixed block (7).

4. The steel bar performance testing device for construction site quality detection according to claim 2, characterized in that: The driving assembly comprises a mounting box (16), the mounting box (16) is internally provided with a servo motor (17), the output shaft of the servo motor (17) is connected with a worm (18), the worm (18) is rotatably connected in the mounting box (16), one side of the worm (18) is meshedly connected with a worm wheel (19), and the worm wheel (19) is installed on one end of the driving screw rod (10) penetrating through the fixing plate (9).

5. The steel bar performance testing device for construction site quality detection according to claim 1, characterized in that: The top of the bottom support frame (1) is provided with a waste collection box (25), and the waste collection box (25) is used for collecting the reinforcing steel bars after testing.

6. The steel bar performance testing device for construction site quality detection according to claim 1, characterized in that: The bottom of the bottom support frame (1) is provided with four heavy-duty universal wheels (24), and the four heavy-duty universal wheels (24) are respectively arranged at the four corners of the bottom support frame (1).

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