CN220040029U - Post-breaking gauge length measuring device for steel bar tensile test - Google Patents
Post-breaking gauge length measuring device for steel bar tensile test Download PDFInfo
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- CN220040029U CN220040029U CN202321572007.1U CN202321572007U CN220040029U CN 220040029 U CN220040029 U CN 220040029U CN 202321572007 U CN202321572007 U CN 202321572007U CN 220040029 U CN220040029 U CN 220040029U
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- gauge length
- tensile test
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000009864 tensile test Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to the field of engineering construction detection, and discloses a device for measuring a post-breaking gauge length of a steel bar tensile test, wherein a magnetic suction plate is arranged in a V-shaped groove, one side of the V-shaped groove is provided with a slide way, the slide way is arranged along the length direction of the V-shaped groove, both ends of the slide way are fixedly provided with slide way baffles, a starting point measuring table and a matched end point measuring table are slidably arranged above the slide way, a laser sight and an electronic range finder are arranged on the starting point measuring table, a laser sight and a shielding plate are arranged on the end point measuring table, the electronic range finder and the shielding plate are matched for distance measurement, and the laser irradiation area of the laser sight faces the V-shaped groove and is perpendicular to the length direction of the V-shaped groove. When this device measures the gauge length after breaking, the putting of reinforcing bar after breaking can be more accurate swift, and stability is strong, and the use of electronic range finder also can improve the detection accuracy greatly, reduces the error, has retried experimental time, and easy operation is swift, and the maintenance is convenient, has promoted work efficiency to a certain extent, and is safe stable, has very high practical value.
Description
Technical Field
The utility model relates to the field of engineering construction detection, in particular to a device for measuring a post-breaking gauge length of a steel bar tensile test.
Background
Along with the development of the economy in China, the technology level is continuously improved, and corresponding measurement technology is continuously developed and widely applied in engineering construction. The steel bar is an important component in the building structure material, and the detection of the mechanical property of the steel bar is the detection of the property which the steel bar has to perform before being used for engineering construction. According to the specifications GB/T1499.2-2018 and GB/T1499.1-2017, the maximum total force elongation and the elongation after breaking in the tensile test result of the steel bar are an important basis for judging whether the steel bar is qualified or not, and the measurement of the gauge length after breaking of the steel bar is an essential test step for obtaining the result. The existing measuring method is as follows: marking a point on a steel bar sample by using a gauge length dotter at intervals of 1cm in the whole length range except for a chuck, breaking the steel bar, abutting the sections of the steel bar, taking the broken section as a center, finding out the number of the gauge length points before pulling the steel bar at the two ends, finding out the range of the original gauge length, measuring the gauge length after breaking by using a vernier caliper, subtracting the gauge length before breaking from the gauge length after breaking, dividing the gauge length before breaking by the gauge length before breaking to obtain the elongation, ensuring that the ports are abutted on the same axis when the ports are required to be abutted by the measurement of the gauge length after breaking of the steel bar tensile test, and ensuring that the optimal measurement position is the gauge length to be upward; the existing method needs manual marking, and the axes of two sections of samples which are broken in the process of measuring the length after breaking are not shifted on the same straight line, so that the measured length after breaking is smaller, the measuring result is influenced, gaps at the butt joint positions of the sections cannot be clung, the measured length after breaking is larger, the measuring result is influenced, the existing measuring of the length after breaking is only carried out by a vernier caliper, the upward length of the length after breaking cannot be ensured, the steel bar displacement rolling is easily caused in the measuring process, the samples are easily offset due to touching in the measuring process of the vernier caliper, the samples are unstable to place, two persons are required to cooperate, time and labor are wasted, the measuring error is large, the accuracy is low, the uncertainty of the test result is increased, and the test time is prolonged.
Disclosure of Invention
The utility model provides a device for measuring the post-breaking gauge length of a steel bar tensile test, which aims to solve the problems of large error, inaccurate test result, inconvenient operation of workers and low working efficiency of the post-breaking gauge length of the steel bar tensile test.
The utility model is realized by adopting the following technical scheme:
the utility model provides a steel bar tensile test breaks back gauge length measuring device, including V type groove, be equipped with the magnetism in the V type groove and inhale the board, one side in V type groove is provided with the slide, the slide sets up along V type groove length direction, equal fixed mounting slide baffle in slide both ends, slide top slidable mounting has starting point to measure the platform and the terminal measuring platform of matching, install laser sight and electronic range finder on the starting point measuring platform, install laser sight and shielding plate on the terminal measuring platform, electronic range finder and shielding plate cooperation range finding, the laser irradiation district of laser sight is towards the length direction in V type groove and perpendicular to V type groove.
When the device is implemented, the designed device for measuring the post-breaking gauge length of the steel bar tensile test comprises a V-shaped groove, wherein an included angle between two groove surfaces of the V-shaped groove is 100 degrees, the size and the angle of the V-shaped groove can meet the placement of a conventional steel bar, a magnetic suction plate is arranged in the V-shaped groove and is flatly attached in the groove of the V-shaped groove, the magnetic suction plate is made of neodymium-iron-boron powerful magnets and is used for fixing a steel bar sample, and the steel bar is magnetically attracted on the magnetic suction plate and does not rotate or displace; one side of the V-shaped groove is provided with a slide way, the slide way is arranged along the length direction of the V-shaped groove and used for installing a starting point measuring table and an end point measuring table, slide way baffles are fixedly installed at two ends of the slide way for ensuring safety and reliability, the slide way baffles are installed on the slide way through baffle knobs, so that the slide way baffles are flexibly assembled and are easy to maintain, particularly, screw holes are formed in the lower part of the slide way baffles, the slide way baffles are clamped on the slide way and then pass through the screw holes to be fixed through the baffle knobs, the baffle knobs are claw bolts, one ends of the baffle knobs are extruded on the side walls of the slide way to strengthen the stability of the slide way, the other ends of the baffle knobs are heads of the claw bolts, and the slide way is convenient to disassemble manually without other tools; the starting point measuring table and the matched end point measuring table are slidably arranged above the slideway, the starting point measuring table and the end point measuring table are positioned on the same horizontal height, the starting point measuring table and the end point measuring table are slidably and fixedly arranged on the slideway through fastening knobs, and the positions of the starting point measuring table and the end point measuring table can be flexibly adjusted according to the length of a steel bar sample; the electronic distance meter is used for measuring the length of the steel bar, and comprises a display screen for displaying the measured length, wherein laser emitted by the laser sight on the starting point measuring table is level with the measurement starting position of the electronic distance meter; the laser sighting device and the shielding plate are arranged on the end point measuring table, the laser sighting device on the end point measuring table is used for aligning the shielding plate with the steel bar, namely, the end point of distance measurement of the electronic distance measuring device is aligned with one side of the shielding plate, which faces the starting point measuring table, of the electronic distance measuring device is matched with the shielding plate for distance measurement, namely, the distance measured by the electronic distance measuring device is the distance from the starting point to the end point of the steel bar broken back gauge, the laser irradiation area of the laser sighting device faces the V-shaped groove and is perpendicular to the length direction of the V-shaped groove, the laser sighting device is aligned with the beginning and the end of the steel bar sample, and the installation adjusting angle of the laser sighting device is the vertical plane where the laser irradiation area is located, so that the steel bars with various diameters can be measured, and the alignment is convenient.
When the device is used, after the steel bars after being pulled out are in butt joint again, the gauge length is upwards placed on the magnetic attraction plate in the V-shaped groove, under the action of magnetic attraction, the steel bars are firm and difficult to slide, the starting point measuring table is moved to the position of the starting point of the gauge length of the steel bars to be measured, the laser sighting device is opened, the starting point measuring table is slowly moved to enable laser to be opposite to the starting point of the steel bar sample, the fastening knob of the starting point measuring table is screwed down, the starting point measuring table is stably fixed on the slideway, the electronic distance measuring device is opened, the sliding end point measuring table is slid, the shielding plate is abutted to the starting point measuring point of the electronic distance measuring device, the control button is pressed to zero the electronic distance measuring device, then the laser sighting device of the end point measuring table is opened, the same as the starting point measuring table is operated, the sliding end point measuring table is enabled to enable laser to be opposite to the ending point of the steel bar sample, at the moment, the laser emitted by the electronic distance measuring table is shielded by the shielding plate of the end point measuring table, the number on the display screen of the electronic signal measuring device is the mark length of the steel bars after the measuring is finished, the shielding plate at one end of the slideway is screwed down, the shielding plate of the end of the slideway is convenient, the sliding plate is maintained by the worker, the side of the end plate is positioned at one end of the slideway, the end, the electronic measuring station is used for maintenance, the whole, and the whole maintenance device is used.
Compared with the prior art, the utility model has the following beneficial effects: according to the device for measuring the post-breaking gauge length of the steel bar tensile test, the laser sighting device is used for aligning the measured marking point with the electronic range finder, and then the electronic range finder is matched with the shielding plate to measure the positions of the starting point and the end point, so that errors caused by using a vernier caliper only are avoided, the positions of the steel bars are fixed by the magnetic suction plate, errors caused by shaking are avoided, the measuring result is accurate, the measuring precision is high, and the accuracy of the test is effectively improved.
When the device measures the gauge length after breaking, the pendulum of the steel bar after breaking can be more stable, and the use of the electronic range finder also greatly improves the accuracy of detection, effectively reduces test errors, is convenient and fast to operate, greatly improves the working efficiency, and can fully ensure the accuracy of the test.
Drawings
Fig. 1 shows a schematic diagram of the front view structure of the present utility model.
Fig. 2 shows a cross-sectional view of the utility model at the origin measuring station.
Fig. 3 shows a top view of the present utility model.
In the figure: the device comprises a 1-V-shaped groove, a 2-magnetic suction plate, a 3-slideway, a 4-slideway baffle, a 5-starting point measuring table, a 6-electronic distance meter, a 601-display screen, a 7-control button, an 8-laser sighting device, a 9-end point measuring table, a 10-fastening knob, a 11-baffle knob, a 12-laser irradiation area and a 13-shielding plate.
Description of the embodiments
Specific embodiments of the present utility model will be described below with reference to the accompanying drawings.
The utility model provides a steel bar tensile test post-breaking gauge length measuring device, as shown in fig. 2: when the steel bar test device is implemented, the steel bar test device comprises a V-shaped groove 1, wherein an included angle between two groove surfaces of the V-shaped groove 1 is 100 degrees, the size and the angle can meet the placement of conventional steel bars, a magnetic suction plate 2 is arranged in the V-shaped groove 1, the magnetic suction plate 2 is flatly attached in the groove body of the V-shaped groove 1, the magnetic suction plate 2 is made of neodymium-iron-boron powerful magnets and is used for fixing steel bar samples, and the steel bars are magnetically attracted on the magnetic suction plate 2 and do not rotate or displace; as shown in fig. 3: one side of V type groove 1 is provided with slide 3, slide 3 sets up along V type groove 1 length direction for installation starting point measures platform 5 and terminal point and measures platform 9, for guaranteeing safe and reliable, prevent that starting point from measuring platform 5 and terminal point and measure platform 9 slippage, slide 3 both ends equal fixed mounting slide baffle 4, slide baffle 4 passes through baffle knob 11 and installs on slide 3 for slide baffle 4 is nimble to be assembled, easy to maintain, and the screw has been opened to the lower part of specifically slide baffle 4, and slide baffle 4 block passes the screw through baffle knob 11 after on slide 3 and fixes, and baffle knob 11 is the claw bolt, as shown in fig. 1: one end of the baffle knob 11 is extruded on the side wall of the slideway 3, so that the stability of the slideway 3 is enhanced, and the other end of the baffle knob 11 is the head of a claw bolt, so that the manual disassembly is convenient, and the disassembly can be completed without other tools; a starting point measuring table 5 and a matched end point measuring table 9 are slidably arranged above the slideway 3, the starting point measuring table 5 and the end point measuring table 9 are positioned on the same horizontal height, the starting point measuring table 5 and the end point measuring table 9 are slidably and fixedly arranged on the slideway 3 through a fastening knob 10, and the positions of the starting point measuring table 5 and the end point measuring table 9 can be flexibly adjusted according to the length of a steel bar sample; the starting point measuring table 5 is provided with a laser sight 8 and an electronic distance meter 6, the laser sight 8 is used for aligning the starting point of the electronic distance meter 6 with a steel bar, the electronic distance meter 6 is used for measuring the length of the steel bar, the electronic distance meter 6 comprises a display screen 601 for displaying the measured length, and the laser emitted by the laser sight 8 on the starting point measuring table 5 is level with the measuring starting position of the electronic distance meter 6; install laser sight 8 and shielding plate 13 on the terminal measurement platform 9, laser sight 8 on the terminal measurement platform 9 is used for aligning shielding plate 13 with the reinforcing bar, namely the terminal of electronic range finder 6 range finding, the laser sight 8 on the terminal measurement platform 9 and shielding plate 13 are towards one side parallel and level of starting point measurement platform 5, electronic range finder 6 and shielding plate 13 cooperation range finding, namely the distance that electronic range finder 6 measured is the distance of starting point to the terminal of the gauge length behind the reinforcing bar fracture, the laser irradiation district 12 of laser sight 8 is towards the length direction of V type inslot 1 and perpendicular to V type inslot 1, with the beginning and ending alignment of reinforcing bar sample, the installation angle of adjustment of laser sight 8 is the reinforcing bar that the vertical face that laser irradiation district 12 was located can measure various diameters, be convenient for align.
When the device is used, after the steel bars after being pulled out are in butt joint again, the gauge length is upwards placed on the magnetic attraction plate 2 in the groove of the V-shaped groove 1, under the action of magnetic attraction, the steel bars are firm and difficult to slide, the starting point measuring table 5 is moved to the position of the steel bar gauge length starting point to be measured, the laser sighting device 8 is opened, the starting point measuring table 5 is slowly moved to enable the laser to be opposite to the starting point of a steel bar sample, the fastening knob 10 of the starting point measuring table 5 is screwed, the starting point measuring table 5 is stably fixed on the slideway 3, the electronic distance measuring table 6 is opened, the sliding end measuring table 9 is slid, the shielding plate 13 is abutted to the starting measuring point of the electronic distance measuring table 6, the control button 7 is pressed to zero the electronic distance measuring table 6, then the laser sighting device 8 of the end measuring table 9 is opened, the same as the starting point measuring table 5 is operated, the laser is opposite to the end point of the steel bar sample, at the moment, the laser emitted by the electronic distance measuring table 6 is shielded by the shielding plate 13 of the end measuring table 9, the number of words on the display screen 601 of the electronic distance measuring table 5 is the broken, after the slideway is measured, maintenance personnel can conveniently screw the worker to unscrew the electronic distance measuring table 4 from the slideway 4, and the end of the slideway is more completely maintained by the end measuring table 4, and the end point measuring device is screwed down by the end measuring table 4, and the end point of the slideway 4 is more completely maintained by the end-stop device.
The scope of the present utility model is not limited to the above embodiments, and various modifications and alterations of the present utility model will become apparent to those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the present utility model are intended to be included in the scope of the present utility model.
Claims (9)
1. The utility model provides a steel bar tensile test gauge length measuring device after breaking which characterized in that: including V type groove (1), be equipped with magnetic attraction board (2) in V type groove (1) inslot, one side of V type groove (1) is provided with slide (3), slide (3) are along V type groove (1) length direction setting, slide (3) both ends equal fixed mounting slide baffle (4), start point measurement platform (5) and matched terminal point measurement platform (9) are installed to slide (3) top, install laser sight (8) and electronic range finder (6) on start point measurement platform (5), install laser sight (8) and shielding plate (13) on terminal point measurement platform (9), electronic range finder (6) and shielding plate (13) cooperation range finding, laser irradiation district (12) of laser sight (8) are towards the length direction of V type groove (1) inslot and perpendicular to V type groove (1).
2. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the starting point measuring table (5) and the end point measuring table (9) are fixedly arranged on the slideway (3) in a sliding manner through a fastening knob (10).
3. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the installation and adjustment angle of the laser sighting device (8) is a vertical plane where the laser irradiation area (12) is located.
4. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the laser emitted by the laser sighting device (8) on the starting point measuring table (5) is level with the measuring starting position of the electronic range finder (6).
5. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the laser sighting device (8) on the end point measuring table (9) is flush with one side of the shielding plate, which faces the starting point measuring table (5).
6. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the slide rail baffle (4) is arranged on the slide rail through a baffle knob (11).
7. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the lower part of the slide way baffle plate (4) is provided with a screw hole, the slide way baffle plate (4) is clamped on the slide way and then fixed through the screw hole by penetrating through a baffle knob (11), and one end of the baffle knob (11) is extruded on the side wall of the slide way (3).
8. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the included angle between the two groove surfaces of the V-shaped groove (1) is 100 degrees.
9. The device for measuring the post-breaking gauge length of a steel bar tensile test according to claim 1, wherein: the magnetic attraction plate (2) is flatly attached in the groove body of the V-shaped groove (1) and is made of neodymium iron boron powerful magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572007.1U CN220040029U (en) | 2023-06-20 | 2023-06-20 | Post-breaking gauge length measuring device for steel bar tensile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321572007.1U CN220040029U (en) | 2023-06-20 | 2023-06-20 | Post-breaking gauge length measuring device for steel bar tensile test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220040029U true CN220040029U (en) | 2023-11-17 |
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ID=88727435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321572007.1U Active CN220040029U (en) | 2023-06-20 | 2023-06-20 | Post-breaking gauge length measuring device for steel bar tensile test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220040029U (en) |
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2023
- 2023-06-20 CN CN202321572007.1U patent/CN220040029U/en active Active
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