Reinforcing steel bar tensile test device integrating multiple detection items and method thereof

Abstract

The invention discloses a steel bar tensile test device fusing multiple detection items and a method thereof, and relates to the technical field of steel bar tensile tests, the steel bar tensile test device comprises an anti-vibration seat and a base mounted at the bottom of the outer surface of one side of the anti-vibration seat, and a tensile test assembly is arranged on the outer surface of one side of the anti-vibration seat. When the device is used, the tensile test assembly performs a tensile test, the winding system is started, the impact hammer automatically falls down by winding the winding rope, increasing the impact height and starting the electric claw disc, the steel bar sample is impacted, the high-speed load measurement sensor captures load change in the impact process, and the impact test detection of the steel bar sample is completed. The hydraulic system is started, the three pressure heads are pushed to move downwards, pressure is applied to the steel bar sample, the steel bar sample passes through the detection cavity and the high-definition camera to shoot three indentations when moved out, the hardness performance detection of the steel bar sample is completed, detection items are more comprehensive, the steel bar quality can be comprehensively evaluated, and the test accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of steel bar tensile testing technology, specifically to a steel bar tensile testing device and method that integrates multiple testing items. Background Technology

[0002] As the "skeleton" of a building structure, the mechanical properties of reinforcing steel directly determine the load-bearing capacity and safety of the structure. The tensile test of reinforcing steel is the core testing method for detecting its mechanical properties. It simulates the stress state of reinforcing steel in actual engineering by applying an axial, slowly increasing tensile force, recording the relationship between the tensile force and the specimen deformation until the specimen breaks. Data processing yields the three core mechanical indicators of the reinforcing steel: yield strength, tensile strength, and elongation. These indicators are crucial for determining whether the reinforcing steel meets design and specification requirements.

[0003] In existing technologies, in addition to tensile properties affecting the load-bearing capacity and safety of reinforcing bars, impact properties and hardness properties are also very important influencing factors. However, when using a reinforcing bar tensile testing machine, it can generally only perform tensile property testing on reinforcing bar samples. The sample performance testing is limited and cannot obtain information on the impact properties and hardness properties of the reinforcing bars, making it difficult to comprehensively evaluate the quality of the reinforcing bars and resulting in poor accuracy of the test results.

[0004] Therefore, we propose a steel bar tensile testing device that integrates multiple testing items to address the problems mentioned in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a steel bar tensile testing device that integrates multiple testing items, in order to solve the problems of the steel bar tensile testing machine mentioned in the background art, which can only perform tensile performance testing, has a single performance testing method, cannot obtain the impact performance and hardness performance of steel bars, is difficult to comprehensively evaluate the quality of steel bars, and has poor test results accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel bar tensile testing device integrating multiple testing items, comprising a shock-absorbing seat and a base installed at the bottom of one outer surface of the shock-absorbing seat, a tensile testing component is provided on one outer surface of the shock-absorbing seat, a hardness testing component is provided on the rear surface of the tensile testing component, an impact testing component is provided on the other outer surface of the shock-absorbing seat, and a weight adjustment component is provided inside the impact testing component;

[0007] The impact test assembly includes a winding system and two columns. A lifting plate is movably fitted on the outer surface of the two columns. An electric claw plate is fixedly installed at the bottom of the lifting plate. An impact rod is installed inside the electric claw plate. An impact hammer is fixedly installed at the bottom end of the impact rod. A fixing plate is fixedly installed on the outer surface of the impact rod. Multiple weights are movably fitted on the outer surface of the impact rod.

[0008] The hardness testing assembly includes a body, and three hydraulic systems are provided on the top surface inside the body. Each of the three hydraulic systems has a pressure head at one end.

[0009] Preferably, each of the three hydraulic systems has a mounting base fixedly installed at one end, and the top ends of the three pressure heads are respectively installed inside the three mounting bases by bolts. The three pressure heads are respectively arranged in a rectangular, cylindrical and square shape. A pressure seat is fixedly installed on the bottom surface inside the machine body, and a detection cavity is opened on the top of the pressure seat. A detection plate is fixedly installed on the outer surface of the pressure seat near the detection cavity, and a high-definition camera is fixedly installed on the top surface inside the detection plate.

[0010] Preferably, the detection chamber has through holes on both sides, and the outer surface of one side of the pressure seat has a threaded groove. The inside of the threaded groove is connected to the inside of one of the through holes. A locking bolt is embedded in the threaded groove. The bottom of the machine body is fixedly installed on the rear surface of the top of the base.

[0011] Preferably, the weight adjustment assembly includes a mounting plate, on the top surface of the mounting plate, a hydraulic rod is fixedly mounted, a movable plate is fixedly mounted at one end of the hydraulic rod, two hydraulic cylinders are fixedly mounted inside the movable plate, an arc-shaped plate is fixedly mounted at one end of each of the two hydraulic cylinders, four reinforcing rods are fixedly mounted at the bottom of each of the two arc-shaped plates, the eight reinforcing rods are evenly divided into two groups, an arc-shaped clamp is fixedly mounted at the bottom end of each of the two groups of reinforcing rods, and two supporting rods are fixedly mounted inside each of the two arc-shaped clamps.

[0012] Preferably, an impact seat is bolted to the bottom surface inside the shock absorber seat, a placement mold is fixedly installed on the top of the impact seat, a high-speed load measuring sensor is installed inside the impact seat, a sliding plate is movably fitted on the outer surface of the two columns, two toothed clamping plates are movably fitted on the outer surface of the weight, two reinforcing plates are fixedly installed on the top of the sliding plate, and electric actuators are fixedly installed on one side of the outer surface of each of the two reinforcing plates. One end of each of the two electric actuators is fixedly connected to one side of the outer surface of the two toothed clamping plates.

[0013] Preferably, the tensile testing assembly includes a housing, a power system is installed inside the housing, a measuring system is installed on the front surface of the bottom of the power system, a clamping system is installed on the bottom of the measuring system and the front surface of the top of the base, the bottom of the housing is fixedly installed on the top of the base, and a control system is fixedly installed on the top of the outer surface of one side of the shock-absorbing seat.

[0014] Preferably, two support rods are fixedly installed on one side of the outer surface of each of the two clamping plates, and support springs are movably sleeved on the outer surface of each of the four support rods. Two sliding holes are opened at the top of the slide plate, and the bottom of the outer surface of each of the two clamping plates is movably embedded in the two sliding holes. Each pair of adjacent support rods forms a group, and one end of each group of support rods movably extends through to the outer surface of the two reinforcing plates. A connecting plate is fixedly installed on one end of each group of support rods, and each pair of adjacent support springs forms a group.

[0015] Preferably, one end of each of the two sets of support springs is fixedly connected to the outer surface of one side of the two toothed clamping plates, and the other end of each of the two sets of support springs is fixedly connected to the outer surface of the two reinforcing plates. The winding system and the two columns are installed on the bottom surface inside the shock absorber. The winding system and the lifting plate are connected by a winding rope. The outer surface of the impact rod is movably embedded inside the slide plate. The bottom of the fixing plate is installed on the top of the slide plate by bolts.

[0016] Preferably, the bottom of the mounting plate is fixedly mounted on the top of the lifting plate, and the front and rear surfaces of the mounting plate are provided with limiting grooves. The outer surface of the movable plate is movably embedded in the two limiting grooves. The interiors of the two arc-shaped plates are each movably embedded with two sliding rods, and one end of each of the four sliding rods is fixedly mounted inside the movable plate.

[0017] A method for using a steel bar tensile testing device that integrates multiple testing items includes the following steps:

[0018] S1. The sample is clamped by the clamping system, and the power system drives the upper clamping system to move upward at a constant speed to apply tensile force to the steel bar sample. The measurement system accurately measures the tensile force applied to the sample, and the control system plots the stress-strain curve to complete the tensile test of the steel bar sample.

[0019] S2. Start the winding system by winding the winding rope to pull the lifting plate upward to increase the impact height. Then, turn on the electric claw disc and the impact hammer will automatically drop downward to impact the steel bar sample placed in the mold. The high-speed load measurement sensor captures the load change during the impact process, and the control system records the "impact force-time curve" in real time to complete the impact test of the steel bar sample.

[0020] S3. Unscrew the locking bolts, insert the steel bar sample into the circular groove, and then screw in the locking bolts to fix and limit the steel bar sample. Start the hydraulic system to push the three pressure heads downward to apply pressure to the steel bar sample. After forming an indentation, unload the pressure.

[0021] S4. Next, loosen the locking bolts and move the sample outward with the indentation facing upward. When passing through the testing chamber, the high-definition camera captures three types of indentations. The control system processes the image information to complete the hardness performance test of the steel bar sample.

[0022] S5. Two hydraulic cylinders push two arc-shaped plates outward, and the reinforcing rod drives two arc-shaped clamps to move in the opposite direction. The hydraulic rod is activated to push the moving plate downward, and push the arc-shaped plates, reinforcing rod and arc-shaped clamps downward, so that the four supporting rods move to the position below the corresponding target weight. Then the hydraulic rod automatically closes.

[0023] S6. The two hydraulic cylinders resume operation, pulling the arc plate to move in the opposite direction. The two arc clamps move relative to each other through the reinforcing rod, so that all four support rods are inserted under the weight. The two electric push rods are activated to pull the two toothed clamps to move in the opposite direction and separate from the weight.

[0024] S7. The hydraulic rod resumes operation, and the supporting rod moves the weights at this point and above upward together. Finally, the two electric push rods push the two toothed clamps back to the outer surface of the weights, fixing the remaining weights to the outer surface of the impact rod.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In use, the tensile testing assembly performs a tensile test. The winding system is activated to increase the impact height by winding the winding rope. The electric claw disc is activated, and the impact hammer automatically drops downwards to impact the rebar sample. A high-speed load measurement sensor captures the load changes during the impact process, and the control system processes the data to complete the impact test of the rebar sample. The hydraulic system is then activated to push the three pressure heads downwards, applying pressure to the rebar sample and forming indentations. After the indentations are formed, the locking bolts are loosened, and the sample is moved outwards with the indentations facing upwards. A high-definition camera captures the three types of indentations as it passes through the testing chamber. The control system processes the image information to complete the hardness performance test of the rebar sample. This equipment combines tensile, impact, and hardness testing, allowing for simultaneous testing of all three items or individual testing of a single item. This comprehensive testing facilitates a holistic assessment of rebar quality and improves test accuracy.

[0027] 2. In use, this invention uses two hydraulic cylinders to push two arc-shaped plates outward, while the reinforcing rod drives two arc-shaped clamps to move in the opposite direction. The hydraulic cylinders are activated, pushing the moving plate downward so that the supporting rod moves below the target weight. The two hydraulic cylinders are activated again, causing the four supporting rods to insert below the weight. The two electric actuators are activated, pulling the two toothed clamps to move in the opposite direction, separating them from the weight. The hydraulic cylinders resume operation, using the supporting rods to move the weight at this point and above upward. The electric actuators then push the toothed clamps back to the outer surface of the weight. The number of weights on the outer surface of the impact rod can be automatically adjusted using the weight adjustment component, thereby adjusting the weight of the impact hammer and enabling impact testing with different weights, further improving the comprehensiveness and accuracy of the impact test results.

[0028] 3. When using this invention, the hardness testing assembly uses three different shapes and sizes of indenters to conduct hardness tests simultaneously, evaluating the hardness of the steel bars from multiple angles. This provides a more comprehensive understanding of the hardness of the steel bars in different regions and at different scales, reducing the errors and limitations caused by a single testing method. The indenters are bolted into the mounting base, allowing for the replacement of indenters of the same height but different diameters, thereby enabling hardness testing of the same shape but different sizes and improving the accuracy and reliability of the test results. Attached Figure Description

[0029] Figure 1 This is a first-angle perspective view of a steel bar tensile testing device integrating multiple testing items according to the present invention;

[0030] Figure 2 This is a second perspective view of a steel bar tensile testing device integrating multiple testing items according to the present invention;

[0031] Figure 3 This is a structural cross-sectional schematic diagram of the hardness testing component in a steel bar tensile testing device integrating multiple testing items according to the present invention;

[0032] Figure 4 This is a schematic diagram of the indenter structure in a steel bar tensile testing device integrating multiple testing items according to the present invention;

[0033] Figure 5 This is a schematic diagram of the impact testing component in a steel bar tensile testing device that integrates multiple testing items according to the present invention;

[0034] Figure 6 This is a cross-sectional view of the impact seat in a steel bar tensile testing device that integrates multiple testing items according to the present invention.

[0035] Figure 7 This is a schematic diagram of the impact hammer in a steel bar tensile testing device that integrates multiple testing items according to the present invention;

[0036] Figure 8 This is a schematic diagram showing the structural development of the weight adjustment component in a steel bar tensile testing device integrating multiple testing items according to the present invention.

[0037] Figure 9 This is a schematic diagram of the arc-shaped clamp in a steel bar tensile testing device that integrates multiple testing items according to the present invention.

[0038] In the picture:

[0039] 1. Vibration damper; 2. Base; 3. Tensile testing assembly; 301. Chassis; 302. Power system; 303. Measurement system; 304. Clamping system; 4. Impact testing assembly; 401. Winding system; 402. Impact seat; 403. Placement mold; 404. High-speed load measurement sensor; 405. Column; 406. Elevation plate; 407. Electric gripper; 408. Impact rod; 409. Impact hammer; 410. Fixing plate; 411. Slide plate; 412. Sliding hole; 413. Weight; 414. Clamping plate; 415. Electric actuator; 416. Reinforcing plate; 417. Support rod 418. Support spring; 419. Connecting plate; 5. Hardness testing assembly; 501. Machine body; 502. Hydraulic system; 503. Mounting base; 504. Indenter; 505. Pressing seat; 506. Testing chamber; 507. Perforation; 508. Threaded groove; 509. Locking bolt; 510. Testing plate; 511. High-definition camera; 6. Weight adjustment assembly; 601. Mounting plate; 602. Hydraulic rod; 603. Moving plate; 604. Limiting groove; 605. Hydraulic cylinder; 606. Arc plate; 607. Reinforcing rod; 608. Arc clamp; 609. Support rod; 610. Slide rod; 7. Control system. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figures 1-9As shown, the present invention provides a technical solution: a steel bar tensile testing device integrating multiple testing items, including a shock-absorbing seat 1 and a base 2 installed at the bottom of one side of the outer surface of the shock-absorbing seat 1. A tensile testing component 3 is provided on one side of the outer surface of the shock-absorbing seat 1, a hardness testing component 5 is provided on the rear surface of the tensile testing component 3, and an impact testing component 4 is provided on the other side of the outer surface of the shock-absorbing seat 1. A weight adjustment component 6 is provided inside the impact testing component 4. The impact testing component 4 includes a winding system 401 and two columns 405. A lifting plate 406 is movably sleeved on the outer surface of the two columns 405. An electric claw plate 407 is fixedly installed at the bottom of the lifting plate 406. An impact rod 408 is provided inside the electric claw plate 407. An impact hammer 409 is fixedly installed at the bottom end of the impact rod 408. A fixing plate 410 is fixedly installed on the outer surface of the impact rod 408. Multiple weights 413 are movably sleeved on the outer surface of the impact rod 408.The hardness testing assembly 5 includes a body 501. Three hydraulic systems 502 are installed on the top surface inside the body 501. Each of the three hydraulic systems 502 has a pressure head 504 at one end, and a mounting base 503 is fixedly installed at one end of each hydraulic system 502. The tops of the three pressure heads 504 are respectively bolted to the interior of the three mounting bases 503. The three pressure heads 504 are rectangular, cylindrical, and square, respectively. A pressure seat 505 is fixedly installed on the bottom surface inside the body 501. A detection cavity 506 is formed on the top of the pressure seat 505. A detection plate 510 is fixedly installed on the outer surface of the pressure seat 505 near the detection cavity 506. A high-definition camera is fixedly installed on the top surface inside the detection plate 510. 511, both sides of the detection chamber 506 have through holes 507. A threaded groove 508 is formed on one outer surface of the pressure seat 505. The interior of the threaded groove 508 communicates with the interior of one of the through holes 507. A locking bolt 509 is embedded in the threaded groove 508. The bottom of the machine body 501 is fixedly installed on the rear surface of the top of the base 2. An impact seat 402 is bolted to the bottom surface inside the shock-absorbing seat 1. A placement mold 403 is fixedly installed on the top of the impact seat 402. A high-speed load measuring sensor 404 is installed inside the impact seat 402. A sliding plate 411 is movably fitted onto the outer surface of the two columns 405. A sliding plate 411 is movably fitted onto the outer surface of the weight 413. Two clamping plates 414 and two reinforcing plates 416 are fixedly installed on the top of the sliding plate 411. Electric push rods 415 are fixedly installed on one outer surface of each of the two reinforcing plates 416. One end of each electric push rod 415 is fixedly connected to one outer surface of the two clamping plates 414. The tensile testing assembly 3 includes a housing 301. A power system 302 is installed inside the housing 301. A measuring system 303 is installed on the front surface of the bottom of the power system 302. Clamping systems 304 are installed on the bottom of the measuring system 303 and the front surface of the top of the base 2. The bottom of the housing 301 is fixedly installed on the top of the base 2. A control system 7 is fixedly installed on the top of one outer surface of the shock absorber 1. The winding system 401 and the two uprights 405 are all installed on the bottom surface inside the shock absorber 1. The winding system 401 and the lifting plate 406 are connected by a winding rope. The outer surface of the impact rod 408 is movably embedded inside the slide plate 411. The bottom of the fixing plate 410 is bolted to the top of the slide plate 411. The bottom of the mounting plate 601 is fixedly installed on the top of the lifting plate 406. Limiting grooves 604 are provided on both the front and rear surfaces of the mounting plate 601. The outer surface of the moving plate 603 is movably embedded inside the two limiting grooves 604. Two sliding rods 610 are movably embedded inside each of the two arc-shaped plates 606. One end of each of the four sliding rods 610 is fixedly installed inside the moving plate 603.

[0042] In this embodiment, during use, the steel bar sample is placed and fixed in the upper and lower clamping systems 304 of the tensile testing assembly 3. The power system 302 is started, driving the upper clamping system 304 to move upward at a uniform speed, applying tensile force to the steel bar sample. At the same time, the measuring system 303 accurately measures the tensile force applied to the sample and transmits the data to the control system 7 for identification and analysis. The control system 7 sets the test parameters, plots the stress-strain curve based on the collected data, and automatically records the yield tensile force, maximum tensile force, and gauge length deformation at fracture. When the sample fractures, the equipment stops automatic loading, completing the tensile test of the steel bar sample. The steel bar sample is placed horizontally in the placement mold 403, and then a folding protective cover is placed on the outer surface of the two columns 405 for protection. The weight of the impact hammer 409 is adjusted by adjusting the number of weights 413 through the weight adjustment assembly 6 according to the required impact weight. The winding system 401 is activated to wind up the rope, thereby pulling the lifting plate 406 upward on the outer surface of the column 405, which in turn moves the impact hammer 409 upward, thus increasing the impact height. When the impact height meets the requirements, the winding system 401 is turned off, and then the electric gripper 407 is activated to release the clamp on the impact rod 408. Under the action of gravity, the impact hammer 409 automatically falls downward to impact the steel bar sample in the placement mold 403. The sample falls into the U-shaped interior of the placement mold 403, and the impact force is transmitted to the impact seat 402 through the placement mold 403. The high-speed load measurement sensor 404 receives the reaction force generated when the sample is impacted and captures the load change during the impact process, and sends the signal to the control system 7. By recording the "impact force-time curve" in real time, key indicators such as impact energy and maximum impact force are further calculated to obtain the impact test results and complete the impact test of the steel bar sample. Unscrew the locking bolt 509, insert the rebar sample through the threaded groove 508 into the through hole 507, and finally into the circular abutment groove. At this time, the other end of the rebar sample is located in the through hole 507 near the threaded groove 508. Then screw in the locking bolt 509 to fix and limit the rebar sample. Activate the three hydraulic systems 502 to push the three differently shaped indenters 504 downwards, applying pressure to the rebar sample so that the three indenters 504 are pressed into the surface of the rebar sample. After maintaining this position for a certain period, release the pressure, and the hydraulic system 502 pulls the indenters 504 upwards to reset them and separate them from the rebar sample. Unscrew the locking bolt 509, and then, keeping the indentation facing upwards, slowly push the rebar sample outwards. During the sliding process, the high-definition camera 511 captures images of the three different indentations and transmits the captured information to the control system 7 via electrical signals for image processing. The control system automatically calculates the indentation size and completes the hardness performance test of the rebar sample.In the hardness testing component 5, three different shapes and sizes of indenters 504 are used simultaneously for hardness testing. This allows for the evaluation of rebar hardness from multiple perspectives, providing a more comprehensive understanding of the hardness of the rebar in different regions and at different scales. It reduces the errors and limitations of single testing methods, improving the accuracy and reliability of test results. The indenters 504 are bolted into the mounting base 503. By removing the rectangular and square indenters 504, cylindrical indenters 504 of the same height but different diameters can be used to perform hardness testing on the same shape but different sizes. Alternatively, rectangular or square indenters 504 of the same height but different sizes can be used for testing, resulting in more accurate test results. This equipment combines tensile, impact, and hardness testing, allowing for simultaneous testing of all three items or individual testing of a single item. This comprehensive testing facilitates a holistic assessment of rebar quality, improves test accuracy, and solves the problem that rebar tensile testing machines can only perform tensile performance testing, resulting in limited performance measurement and an inability to obtain impact and hardness properties, hindering a comprehensive assessment of rebar quality and leading to inaccurate test results.

[0043] Example 2: Figure 5 and Figures 7-9As shown, the weight adjustment assembly 6 includes a mounting plate 601. A hydraulic rod 602 is fixedly mounted on the top surface inside the mounting plate 601. A movable plate 603 is fixedly mounted on one end of the hydraulic rod 602. Two hydraulic cylinders 605 are fixedly mounted inside the movable plate 603. An arc-shaped plate 606 is fixedly mounted on one end of each of the two hydraulic cylinders 605. Four reinforcing rods 607 are fixedly mounted on the bottom of each of the two arc-shaped plates 606. The eight reinforcing rods 607 are evenly divided into two groups. An arc-shaped clamp 6 is fixedly mounted on the bottom end of each group of reinforcing rods 607. 08, two support rods 609 are fixedly installed inside each of the two arc-shaped clamps 608. An impact seat 402 is bolted to the bottom surface inside the shock absorber 1. A placement mold 403 is fixedly installed on the top of the impact seat 402. A high-speed load measuring sensor 404 is installed inside the impact seat 402. A sliding plate 411 is movably fitted on the outer surface of the two columns 405. Two toothed clamping plates 414 are movably fitted on the outer surface of the weight 413. Two reinforcing plates 416 are fixedly installed on the top of the sliding plate 411. Electric actuators 415 are fixedly installed on one outer surface of each reinforcing plate 416. One end of each electric actuator 415 is fixedly connected to one outer surface of each of the two toothed clamping plates 414. Two support rods 417 are fixedly installed on one outer surface of each of the two toothed clamping plates 414. Support springs 418 are movably fitted onto the outer surfaces of each of the four support rods 417. Two sliding holes 412 are opened at the top of the sliding plate 411. The bottom of the outer surfaces of the two toothed clamping plates 414 are movably embedded in the two sliding holes 412. Each pair of adjacent support rods 417 forms a group, and one end of each group of support rods 417 extends movably through the outer surface of the two reinforcing plates 416. A connecting plate 419 is fixedly installed on one end of each group of support rods 417. Each pair of adjacent support springs 418 forms a group, and one end of each group of support springs 418 is fixedly connected to one side of the outer surface of the two toothed clamping plates 414. The other end of each group of support springs 418 is fixedly connected to the outer surface of the two reinforcing plates 416.

[0044] In this embodiment, when in use, such as Figure 8As shown, the structure of the weight 413 is T-shaped. After multiple weights 413 are stacked together, an annular gap is formed between two adjacent weights 413. The teeth on opposite sides of the two toothed clamping plates 414 are engaged in the annular gap, thus fixing the weight 413 to the outer surface of the impact rod 408, thereby increasing the weight of the impact hammer 409. Activating the two hydraulic cylinders 605 pushes the two arc-shaped plates 606 to slide outwards on the outer surface of the corresponding slide rod 610. The reinforcing rod 607 pushes the two arc-shaped clamps 608 to move in opposite directions, widening the distance between the two arc-shaped clamps 608. To achieve the target weight of the impact hammer 409, the hydraulic rod 602 is activated, pushing the moving plate 603 downwards. This, in turn, pushes the arc-shaped plate 606, reinforcing rod 607, and arc-shaped clamp 608 downwards, causing the four support rods 609 to move below the corresponding target weight 413. The hydraulic rod 602 then automatically closes. Next, the two hydraulic cylinders 605 are activated, pulling the corresponding arc-shaped plate 606 in the opposite direction. This, through the reinforcing rod 607, causes the two arc-shaped clamps 608 to move relative to each other, inserting all four support rods 609 below the weight 413. Immediately afterward, the two electric actuators 415 are activated, pulling the two toothed clamps 414 in the opposite direction, causing them to leave the annular gap of the weight 413 and separate from it. At this point, the weight 413 loses its limit. Finally, the hydraulic rod 602 is activated again. This time, the hydraulic rod 602 pulls the moving plate 603 upwards, causing the arc-shaped plate 606, reinforcing rod 607, and arc-shaped clamp 608 to move upwards. The supporting rod 609 then moves the additional weights 413 at this location and above upwards. Then, two electric actuators 415 push the two toothed clamps 414 back onto the outer surface of the additional weights 413, fixing the remaining additional weights 413 to the outer surface of the impact rod 408. The weight adjustment component 6 automatically adjusts the number of additional weights 413 on the outer surface of the impact rod 408, thereby adjusting the weight of the impact hammer 409 and enabling impact testing with different weights, further improving the comprehensiveness and accuracy of the impact test results.

[0045] The method of use and working principle of this invention are as follows: The reinforcing bar specimen is placed and fixed in the upper and lower clamping systems 304 of the tensile testing assembly 3. The power system 302 is started, driving the upper clamping system 304 to move upward at a uniform speed, applying tensile force to the reinforcing bar specimen. Simultaneously, the measuring system 303 accurately measures the tensile force applied to the specimen and transmits the data to the control system 7 for identification and analysis. The control system 7 sets the test parameters and, based on the collected data, plots a stress-strain curve to complete the tensile test of the reinforcing bar specimen. The reinforcing bar specimen is then placed horizontally in the placement mold 403, and a foldable protective cover is placed on the outer surface of the two columns 405 for enclosure and protection. The winding system 401 is activated to wind up the rope, thereby pulling the lifting plate 406 upward on the outer surface of the column 405, which in turn moves the impact hammer 409 upward. When the height meets the requirements, the winding system 401 is turned off, and then the electric gripper 407 is activated. The impact hammer 409 automatically falls downward to impact the steel bar sample in the mold 403. The sample falls into the U-shaped interior of the mold 403. The high-speed load measurement sensor 404 receives the reaction force generated when the sample is impacted and captures the load change during the impact process, and sends the signal to the control system 7. By recording the "impact force-time curve" in real time, the impact test of the steel bar sample is completed. The locking bolt 509 is unscrewed, and the steel bar sample is inserted through the threaded groove 508 into the through hole 507. Then, the locking bolt 509 is screwed in to fix and limit the steel bar sample. Three hydraulic systems 502 are activated, pushing three pressure heads 504 downwards to apply pressure to the steel bar sample, causing the three pressure heads 504 to press into the surface of the steel bar sample. After maintaining this pressure for a certain period, the pressure is released, and the hydraulic systems 502 pull the pressure heads 504 upwards to reset them and separate them from the steel bar sample. The locking bolts 509 are loosened, keeping the indentations facing upwards, and the steel bar sample is slowly pushed outwards. During this sliding process, the high-definition camera 511 captures images of the three indentations and transmits the captured information to the control system 7 via electrical signals for image processing, completing the hardness performance test of the steel bar sample. Two hydraulic cylinders 605 are activated, pushing two arc-shaped plates 606 outwards, which in turn push two arc-shaped clamps 608 to move in opposite directions via the reinforcing rod 607. Hydraulic rod 602 is activated, pushing the moving plate 603, arc-shaped plate 606, reinforcing rod 607, and arc-shaped clamps 608 downwards, causing the four supporting rods 609 to move below the target weight 413. The two hydraulic cylinders 605 are activated again. Pulling the two arc-shaped clamps 608 to move them relative to each other causes the four support rods 609 to insert below the weight 413. Activating the two electric actuators 415 pulls the two toothed clamps 414 to move in opposite directions, separating them from the weight 413. Finally, the hydraulic rod 602 pulls the moving plate 603 upwards, causing the weight 413 at this location and above to move upwards along with the support rods 609.Then the two electric actuators 415 push the two toothed clamps 414 back to the outer surface of the weight 413, thereby automatically adjusting the number of weights 413 on the outer surface of the impact rod 408, and thus adjusting the weight of the impact hammer 409.

[0046] Among them, the power system 302, the measurement system 303, the clamping system 304, the winding system 401, the high-speed load measurement sensor 404, the electric gripper disc 407, the electric push rod 415, the hydraulic system 502, the high-definition camera 511, the hydraulic rod 602, the hydraulic cylinder 605 and the control system 7 are all existing technologies, and their components and operating principles are all publicly available technologies, which will not be explained in detail here.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel bar tensile testing device integrating multiple testing items, comprising a shock-absorbing seat (1) and a base (2) installed at the bottom of the outer surface of one side of the shock-absorbing seat (1), characterized in that: Tensile test assembly (3) is provided on one outer surface of the shock absorber (1), hardness test assembly (5) is provided on the rear surface of the tensile test assembly (3), impact test assembly (4) is provided on the other outer surface of the shock absorber (1), and weight adjustment assembly (6) is provided inside the impact test assembly (4). The impact test assembly (4) includes a winding system (401) and two columns (405). A lifting plate (406) is movably fitted on the outer surface of the two columns (405). An electric claw plate (407) is fixedly installed at the bottom of the lifting plate (406). An impact rod (408) is provided inside the electric claw plate (407). An impact hammer (409) is fixedly installed at the bottom end of the impact rod (408). A fixing plate (410) is fixedly installed on the outer surface of the impact rod (408). Multiple weights (413) are movably fitted on the outer surface of the impact rod (408). The hardness testing assembly (5) includes a body (501), and three hydraulic systems (502) are provided on the top surface inside the body (501). Each of the three hydraulic systems (502) has a pressure head (504) at one end.

2. The steel bar tensile testing device integrating multiple testing items according to claim 1, characterized in that: One end of each of the three hydraulic systems (502) is fixedly mounted with a mounting base (503). The top ends of the three pressure heads (504) are respectively bolted to the interior of the three mounting bases (503). The three pressure heads (504) are respectively rectangular, cylindrical and square. A pressure seat (505) is fixedly mounted on the bottom surface inside the machine body (501). A detection cavity (506) is opened on the top of the pressure seat (505). A detection plate (510) is fixedly mounted on the outer surface of the pressure seat (505) near the detection cavity (506). A high-definition camera (511) is fixedly mounted on the top surface inside the detection plate (510).

3. The steel bar tensile testing device integrating multiple testing items according to claim 2, characterized in that: Both sides of the detection chamber (506) are provided with through holes (507), and a threaded groove (508) is provided on one outer surface of the pressure seat (505). The inside of the threaded groove (508) is connected to the inside of one of the through holes (507). A locking bolt (509) is embedded in the threaded groove (508). The bottom of the machine body (501) is fixedly installed on the rear surface of the top of the base (2).

4. The steel bar tensile testing device integrating multiple testing items according to claim 3, characterized in that: The weight adjustment assembly (6) includes a mounting plate (601). A hydraulic rod (602) is fixedly installed on the top surface inside the mounting plate (601). A movable plate (603) is fixedly installed at one end of the hydraulic rod (602). Two hydraulic cylinders (605) are fixedly installed inside the movable plate (603). An arc plate (606) is fixedly installed at one end of each of the two hydraulic cylinders (605). Four reinforcing rods (607) are fixedly installed at the bottom of each of the two arc plates (606). The eight reinforcing rods (607) are divided into two groups. An arc clamp (608) is fixedly installed at the bottom of each group of reinforcing rods (607). Two supporting rods (609) are fixedly installed inside each of the two arc clamps (608).

5. The steel bar tensile testing device integrating multiple testing items according to claim 4, characterized in that: An impact seat (402) is bolted to the bottom surface inside the shock absorber (1). A placement mold (403) is fixedly installed on the top of the impact seat (402). A high-speed load measuring sensor (404) is installed inside the impact seat (402). A sliding plate (411) is movably fitted on the outer surface of the two columns (405). Two toothed clamping plates (414) are movably fitted on the outer surface of the weight (413). Two reinforcing plates (416) are fixedly installed on the top of the sliding plate (411). Electric push rods (415) are fixedly installed on one side of the outer surface of the two reinforcing plates (416). One end of the two electric push rods (415) is fixedly connected to one side of the outer surface of the two toothed clamping plates (414).

6. The steel bar tensile testing device integrating multiple testing items according to claim 5, characterized in that: The tensile test assembly (3) includes a housing (301), inside which a power system (302) is installed. A measuring system (303) is installed on the front surface of the bottom of the power system (302). A clamping system (304) is installed on the bottom of the measuring system (303) and the front surface of the top of the base (2). The bottom of the housing (301) is fixedly installed on the top of the base (2). A control system (7) is fixedly installed on the top of the outer surface of one side of the shock absorber (1).

7. The steel bar tensile testing device integrating multiple testing items according to claim 6, characterized in that: Two support rods (417) are fixedly installed on one side of the outer surface of each of the two clamping plates (414). Support springs (418) are movably sleeved on the outer surface of each of the four support rods (417). Two sliding holes (412) are opened at the top of the slide plate (411). The bottom of the outer surface of the two clamping plates (414) is movably embedded in the two sliding holes (412). Each pair of adjacent support rods (417) of the four support rods (417) forms a group. One end of each group of support rods (417) movably extends through to the outer surface of the two reinforcing plates (416). A connecting plate (419) is fixedly installed on one end of each group of support rods (417). Each pair of adjacent support springs (418) of the four support springs (418) forms a group.

8. The steel bar tensile testing device integrating multiple testing items according to claim 7, characterized in that: One end of each of the two sets of support springs (418) is fixedly connected to the outer surface of one side of the two toothed clamps (414), and the other end of each of the two sets of support springs (418) is fixedly connected to the outer surface of the two reinforcing plates (416). The winding system (401) and the two columns (405) are installed on the bottom surface inside the shock absorber (1). The winding system (401) and the lifting plate (406) are connected by a winding rope. The outer surface of the impact rod (408) is movably embedded inside the slide plate (411). The bottom of the fixing plate (410) is installed on the top of the slide plate (411) by bolts.

9. The steel bar tensile testing device integrating multiple testing items according to claim 8, characterized in that: The bottom of the mounting plate (601) is fixedly installed on the top of the pull-up plate (406). The front and rear surfaces of the mounting plate (601) are provided with limiting grooves (604). The outer surface of the movable plate (603) is movably embedded in the two limiting grooves (604). The interiors of the two arc-shaped plates (606) are each movably embedded with two sliding rods (610). One end of each of the four sliding rods (610) is fixedly installed inside the movable plate (603).

10. A method for using a steel bar tensile testing device integrating multiple testing items, characterized in that, The steel bar tensile testing device integrating multiple testing items as described in claim 9 includes the following steps: S1. The sample is clamped by the clamping system (304), the power system (302) drives the upper clamping system (304) to move upward at a constant speed, and a tensile force is applied to the steel bar sample. The measuring system (303) accurately measures the tensile force applied to the sample, and the control system (7) plots the "stress-strain curve" to complete the tensile test of the steel bar. S2. Start the winding system (401) by winding the winding rope, pull the lifting plate (406) upward to increase the impact height, then turn on the electric claw plate (407), the impact hammer (409) automatically falls downward to impact the steel bar sample in the mold (403), the high-speed load measurement sensor (404) captures the load change during the impact process, the control system (7) records the "impact force-time curve" in real time, and completes the impact test of the steel bar sample; S3. Unscrew the locking bolt (509), insert the steel bar sample into the circular groove, and then screw in the locking bolt (509) to fix and limit the steel bar sample. Start the hydraulic system (502) to push the three pressure heads (504) downward to apply pressure to the steel bar sample. After forming an indentation, unload the pressure. S4. Next, unscrew the locking bolt (509), keep the indentation facing upward and move the sample outward. When it passes through the detection chamber (506), the high-definition camera (511) takes pictures of the three indentations. The control system (7) processes the image information and completes the hardness performance test of the steel bar sample. S5. Two hydraulic cylinders (605) push two arc plates (606) outward, and the reinforcing rod (607) drives two arc clamps (608) to move in the opposite direction. The hydraulic rod (602) is activated to push the moving plate (603) downward and push the arc plate (606), reinforcing rod (607) and arc clamp (608) downward, so that the four supporting rods (609) move to the position below the corresponding target weight (413). Then the hydraulic rod (602) automatically closes. S6. The two hydraulic cylinders (605) resume operation, pulling the arc plate (606) to move in the opposite direction, and driving the two arc clamps (608) to move relative to each other through the reinforcing rod (607), so that the four supporting rods (609) are inserted under the weight (413), and the two electric push rods (415) are activated to pull the two toothed clamps (414) to move in the opposite direction and separate from the weight (413); S7. The hydraulic rod (602) resumes operation, and the supporting rod (609) drives the weights (413) at this point and above to move upward together. Finally, the two electric push rods (415) push the two toothed clamps (414) back to the outer surface of the weights (413) and fix the remaining weights (413) on the outer surface of the impact rod (408).

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