Steel strength testing equipment for building construction

Abstract

The invention relates to the technical field of building steel testing, in particular to steel strength testing equipment for building construction, which comprises a testing case, a testing cavity is arranged in the testing case, automatic feeding mechanisms are arranged on the front side and the rear side in the testing cavity, and a strength testing mechanism is arranged in the middle in the testing cavity. The automatic feeding mechanism can adaptively clamp and continuously convey steel of different specifications, and the strength testing mechanism comprises a first testing cavity, a second testing cavity and a third testing cavity which are sequentially arranged in the conveying direction of the steel. According to the automatic feeding mechanism, through cooperation of the adjusting threaded rod, the movable mounting frame, the movable limiting frame and other structures, building steel of different specifications can be clamped in a self-adaptive mode, continuous conveying of the steel in the testing cavity is achieved, and compared with a traditional single-point detection mode of manual sample feeding, the manual operation time is greatly shortened, and the detection efficiency is improved. Therefore, the testing efficiency is obviously improved, and the positioning deviation of manual sample feeding can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building steel testing, in particular to a steel strength testing equipment for building construction. BACKGROUND

[0002] The strength of building steel is one of the core indicators to ensure the safety of building structure, and its strength testing is a key link of material inspection and quality control before building construction.

[0003] However, the existing steel strength testing equipment for building construction has many shortcomings: first, the testing method is mostly single-point sampling detection, which relies on manual feeding of steel to fixed testing equipment (such as universal material testing machine), which not only has low testing efficiency, but also single-point detection cannot reflect the strength uniformity of the whole length of steel, and it is easy to miss the local weak area (such as rolling defects, stress concentration section), which poses a hidden danger to the safety of building structure. Secondly, the testing dimension is single, and most of the equipment can only carry out tensile strength testing, and cannot simultaneously detect the multi-dimensional mechanical properties of steel such as compressive strength, bending strength and torsional strength, so it is difficult to comprehensively evaluate the applicability of steel in actual construction (such as bending processing, torsion and pressure bearing, etc.). Thirdly, the automation and adaptability are insufficient: on the one hand, there is a lack of efficient automatic feeding mechanism, which makes it difficult to realize self-adaptive clamping and continuous conveying of steel of different specifications (such as steel bars of different diameters and steel plates of different thicknesses), and the positioning deviation in the manual feeding process may affect the testing accuracy; on the other hand, the equipment is mostly fixedly installed, which has poor mobility and is difficult to quickly deploy to the construction site for immediate detection, thereby increasing the time and labor cost of material inspection.

[0004] Therefore, we propose a steel strength testing equipment for building construction. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a steel strength testing equipment for building construction to solve the above technical defects.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: a steel strength testing equipment for building construction, comprising a test machine box, a test cavity is arranged inside the test machine box, an automatic feeding mechanism is arranged on the front and rear sides inside the test cavity, and a strength testing mechanism is arranged in the middle of the test cavity;

[0007] The automatic feeding mechanism can self-adaptively clamp and continuously convey steel of different specifications, the strength testing mechanism comprises a first test cavity, a second test cavity and a third test cavity arranged in sequence along the conveying direction of the steel, so as to sequentially test the compressive strength, bending strength and torsional strength of the continuously conveyed steel by multi-point testing, and generate a strength distribution map of the steel.

[0008] Preferably, universal wheels are fixedly arranged around the bottom of the test case, and a moving handrail frame is fixedly arranged on the left side of the test case.

[0009] Preferably, the automatic workpiece feeding mechanism comprises movable mounting frames, workpiece conveying rollers and movable limiting frames, movable limiting grooves are arranged on the left and right sides inside the test case, mounting grooves are arranged on the top of the two movable limiting grooves, the movable mounting frames are symmetrically and slidably arranged inside the upper and lower sides of the two movable limiting grooves, and adjusting threaded rods are rotatably arranged inside the two movable limiting grooves; matching threaded holes are arranged on the two sides inside the two movable mounting frames, and the matching threaded holes are in threaded connection with the surface of the adjusting threaded rods; opposite external threads are arranged on the upper and lower sides of the surface of the adjusting threaded rods, so as to drive the two movable mounting frames to relatively slide or oppositely slide along the adjusting threaded rods.

[0010] Preferably, an adjusting servo motor is fixedly arranged in the middle of the mounting groove, a mounting partition plate is fixedly arranged below the mounting groove, the top ends of the two adjusting threaded rods extend through the mounting partition plate and to the top of the mounting groove, and the top ends of the two adjusting threaded rods are rotatably connected with the top of the inner wall of the mounting groove; a single pulley is fixedly arranged at the top end of each of the two adjusting threaded rods, and a double pulley is fixedly arranged at one end of the output shaft of the adjusting servo motor, and the surface of the double pulley is in transmission connection with the surfaces of the two single pulleys through a belt.

[0011] Preferably, adjusting movable grooves are arranged inside the two movable mounting frames, and the workpiece conveying rollers are rotatably arranged inside the two adjusting movable grooves, the workpiece conveying rollers are rotatably connected with one side of the inner wall of the adjusting movable groove through built-in motors, and a pushing silica gel sleeve is fixedly arranged on the middle of the surface of the workpiece conveying roller; first linear sliding tables are fixedly arranged on the front and back sides of the inner wall of the adjusting movable groove, and the movable limiting frames are slidably arranged inside the adjusting movable groove, the front and back sides of the movable limiting frame are slidably connected with one side of the two first linear sliding tables, the inside of the movable limiting frame is slidably connected with the surface of the workpiece conveying roller, a side conveying frame is rotatably arranged on the upper side inside the movable limiting frame through a built-in motor, and one side of the side conveying frame extends to one side of the movable limiting frame.

[0012] Preferably, the strength testing mechanism comprises a movable test frame, a limiting mounting frame is arranged on the upper and lower sides of the test cavity through bolt fixation, and the movable test frame is slidably arranged in the limiting mounting frame; four adjusting servo cylinders are fixedly arranged on the upper and lower sides of the test cavity, and the driving ends of the adjusting servo cylinders on the upper and lower sides are fixedly connected with one side of the movable test frames on the upper and lower sides; the first test cavity, the second test cavity and the third test cavity are sequentially arranged in the movable test frames from front to back, and test assemblies are arranged in the first test cavity, the second test cavity and the third test cavity.

[0013] Preferably, the test assembly comprises a third linear slide and a connecting frame, the top of the inner wall of the first test cavity, the second test cavity and the third test cavity is fixedly provided with the third linear slide, and the bottom of the third linear slide is slidably provided with two connecting frames on both sides, and the control frame is movably arranged in the connecting frame.

[0014] Preferably, the connecting frame arranged in the first test cavity and the second test cavity is fixedly provided with a test servo cylinder in the connecting frame, and the driving end of the test servo cylinder is fixedly connected with one side of the control frame; the connecting frame arranged in the third test cavity is fixedly provided with a test servo motor on one side, and one end of the output shaft of the test servo motor is fixedly connected with the inside of the control frame; a plurality of micro cylinders are fixedly arranged in the control frame, and a plurality of deformation control blocks are slidably arranged on one side of the control frame, and the driving end of each micro cylinder is fixedly connected with one side of each deformation control block.

[0015] Preferably, the first test cavity, the second test cavity and the third test cavity are fixedly provided with a second linear slide on both sides, and the left and right sides of the second linear slide are slidably provided with a workpiece positioning frame, and the workpiece positioning frame adopts an L-shaped structure.

[0016] Preferably, the device is provided with a control system, which can generate a strength distribution map of the length direction of the steel according to the test data, and mark the strength qualified interval and the abnormal point.

[0017] Compared with the prior art, the following beneficial effects are achieved:

[0018] 1. The automatic feeding mechanism in the application can adapt to clamp different specifications of building steel through the cooperation of adjusting screw rod, movable mounting frame, movable limiting frame and other structures, and realize the continuous conveying of steel in the test cavity. Compared with the single-point detection mode of traditional manual sample feeding, not only the manual operation time is greatly reduced, the test efficiency is significantly improved, but also the positioning deviation of manual sample feeding is avoided, the test precision is ensured, and the problem that the traditional equipment is difficult to comprehensively detect the uniformity of the full-length strength of steel is effectively solved.

[0019] 2. The strength test mechanism in the application is provided with the first test cavity, the second test cavity and the third test cavity arranged in sequence, which can test the compressive strength, bending strength and torsional strength of the steel respectively, realizes the synchronous detection of multi-dimensional mechanical properties, compared with the traditional equipment which can only carry out single tensile strength test, can more comprehensively simulate the actual stress scene of steel in building construction, accurately evaluate the comprehensive applicability of steel, and provide more sufficient performance data support for building structure safety.

[0020] 3. In the strength test, the position of the test assembly can be accurately controlled by adjusting the servo cylinder and the third linear slide; the micro-cylinder in the control frame drives the deformation control block, which can make the control frame fit the surface of steel with different shapes; the pushing silica gel sleeve on the surface of the workpiece conveying roller not only increases the friction to ensure stable conveying, but also avoids the wear of the surface of the steel, which not only guarantees the accuracy of multi-dimensional strength test, but also protects the steel and reduces the influence of the test on the subsequent use of the steel.

[0021] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application, and the objects and other advantages of the present application can be achieved and obtained by the structures indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the structure of a building construction steel strength test equipment according to an embodiment of the application;

[0023] Figure 2 It is a schematic view of the internal structure of the test machine box according to an embodiment of the application;

[0024] Figure 3 It is a schematic view of the test machine box, limiting mounting frame and movable test frame structure according to an embodiment of the application;

[0025] Figure 4 It is a schematic view of the internal structure of the test machine box and the automatic feeding mechanism according to an embodiment of the application;

[0026] Figure 5 It is a schematic view of the structure of the automatic feeding mechanism according to an embodiment of the application;

[0027] Figure 6 It is a schematic view of the movable limiting frame, movable mounting frame and workpiece conveying roller structure of the embodiment of the present application.

[0028] Figure 7 It is a schematic view of the internal structure of the movable test frame of the embodiment of the present application.

[0029] Figure 8 It is a schematic view of the control frame and test servo motor structure of the embodiment of the present application.

[0030] Figure 9 It is a schematic view of the control frame and test servo cylinder structure of the embodiment of the present application.

[0031] In the figure, 1 is a test machine box; 2 is a test cavity; 3 is an automatic feeding mechanism; 4 is a strength test mechanism; 5 is a movable mounting frame; 6 is a movable limiting groove; 7 is a mounting groove; 8 is a mounting partition; 9 is an adjusting movable groove; 10 is an adjusting threaded rod; 11 is a single pulley; 12 is a double pulley; 13 is an adjusting servo motor; 14 is a workpiece conveying roller; 15 is a pushing silica gel sleeve; 16 is a movable limiting frame; 17 is a first linear slide table; 18 is a side conveying frame; 19 is a matching threaded hole; 20 is a limiting mounting frame; 21 is a movable test frame; 22 is an adjusting servo cylinder; 23 is a first test cavity; 24 is a second test cavity; 25 is a third test cavity; 26 is a second linear slide table; 27 is a workpiece positioning frame; 28 is a third linear slide table; 29 is a connecting frame; 30 is a control frame; 31 is a test servo cylinder; 32 is a deformation control block; 33 is a micro cylinder; and 34 is a test servo motor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 9As shown, a kind of steel strength testing equipment for building construction, including test machine box 1, the inside of test machine box 1 is provided with test cavity 2, and the front and back sides in test cavity 2 are provided with automatic feeding mechanism 3, and the middle part in test cavity 2 is further provided with strength testing mechanism 4;The steel for building construction is automatically transported by the automatic feeding mechanism 3 of front and back sides, and the strength testing mechanism 4 in the middle part in test cavity 2 is used to test the strength of each test point on the steel, and the steel is continuously transported in test cavity 2 by the automatic feeding mechanism 3 of front and back sides, so that the strength testing operation of each detection point on the steel is quickly and efficiently completed, and the strength distribution map is generated by high-density point detection along the length direction of the steel, the overall strength uniformity of the steel is accurately evaluated, and the construction application safety is ensured.

[0035] Specifically, the four corners of the bottom of the test machine box 1 are fixedly provided with universal wheels, and the left side of the test machine box 1 is also fixedly provided with a moving handrail; When the steel strength testing equipment is moved, the test machine box 1 is conveniently moved flexibly by the universal wheels at the four corners of the bottom of the test machine box 1, and the test machine box 1 is moved flexibly by the moving handrail on the left side of the test machine box 1, thereby improving the carrying and transferring flexibility of the test machine box 1.

[0036] As a further description of the scheme in this embodiment, the automatic feeding mechanism 3 includes a movable mounting frame 5, a workpiece conveying roller 14 and a movable limiting frame 16, the left and right sides in the test machine box 1 are provided with movable limiting grooves 6, the top of the two movable limiting grooves 6 is provided with a mounting groove 7, the upper and lower sides in the two movable limiting grooves 6 are symmetrically and slidably provided with the movable mounting frame 5, and the inside of the two movable limiting grooves 6 is rotatably provided with an adjusting threaded rod 10; The two sides in the two movable mounting frames 5 are provided with matching threaded holes 19, and the inside of the matching threaded holes 19 is threadedly connected with the surface of the adjusting threaded rod 10; Wherein the upper and lower sides on the surface of the adjusting threaded rod 10 are respectively provided with outer threads with opposite rotation directions, when the adjusting threaded rod 10 is controlled to rotate clockwise, the upper and lower movable mounting frames 5 relatively slide along the adjusting threaded rod 10, and vice versa, the upper and lower movable mounting frames 5 slide away along the adjusting threaded rod 10.

[0037] Further, the middle part in the mounting groove 7 is fixedly provided with an adjusting servo motor 13, the lower part in the mounting groove 7 is fixedly provided with a mounting partition plate 8, the top ends of the two adjusting threaded rods 10 penetrate through the mounting partition plate 8 and extend to the top of the mounting groove 7, and the top ends of the two adjusting threaded rods 10 are rotatably connected with the top of the inner wall of the mounting groove 7; The top ends of the two adjusting threaded rods 10 are fixedly provided with single pulleys 11, and the output shaft of the adjusting servo motor 13 is fixedly provided with a double pulley 12, and the surface of the double pulley 12 is drivingly connected with the surfaces of the two single pulleys 11 through a belt.

[0038] It should be noted that when controlling the two active mounting racks 5 to limit the conveying of the steel, the output shaft of the servo motor 13 is adjusted to control the double pulley 12 to rotate clockwise, and the single pulley 11 at the top of the two adjusting threaded rods 10 is driven synchronously to rotate clockwise, so that the upper and lower active mounting racks 5 slide along the adjusting threaded rods 10, until the upper and lower active mounting racks 5 slide to the upper and lower sides of the steel, respectively, and the conveying structure between the upper and lower active mounting racks 5 automatically conveys the steel in the test box 1, so as to realize the multi-point detection operation of the steel.

[0039] Further, the two active mounting racks 5 are provided with adjusting active grooves 9, and the two adjusting active grooves 9 are provided with workpiece conveying rollers 14 rotating therein. The two workpiece conveying rollers 14 are connected to the inner wall of the workpiece conveying roller 14 through the built-in motor, and the middle part of the surface of the workpiece conveying roller 14 is also fixedly provided with a pushing silica gel sleeve 15. The front and rear sides of the inner wall of the adjusting active groove 9 are fixedly provided with first linear sliding tables 17, and the two sides of the inside of the adjusting active groove 9 are slidingly provided with active limiting racks 16. The front and rear sides of the active limiting rack 16 are slidingly connected to one side of the two first linear sliding tables 17, and the inside of the active limiting rack 16 is slidingly connected to the surface of the workpiece conveying roller 14. The upper side of the inside of the active limiting rack 16 is rotatably provided with a side conveying rack 18 through the built-in motor, and one side of the side conveying rack 18 extends to one side of the active limiting rack 16.

[0040] It should be noted that when controlling the steel to be limited and conveyed, the workpiece conveying rollers 14 in the upper and lower active mounting racks 5 are in contact with the upper and lower surfaces of the steel, respectively. The pushing silica gel sleeve 15 on the surface of the two workpiece conveying rollers 14 is in contact with the surface of the steel, which increases the friction between the workpiece conveying roller 14 and the steel. At the same time, the pushing silica gel sleeve 15 protects the surface of the steel during conveying, preventing wear between the surface of the steel and the workpiece conveying roller 14 during conveying. At the same time, the two first linear sliding tables 17 control the active limiting racks 16 on both sides of the active mounting rack 5 to approach the left and right sides of the steel, until the side conveying racks 18 on the two active limiting racks 16 are in contact with the two sides of the surface of the steel. The built-in motor on the active limiting rack 16 controls the two side conveying racks 18 to rotate, and the side conveying rack 18 pushes the steel to the rear side of the test box 1. The two active limiting racks 16 and the workpiece conveying roller 14 cooperate to limit and convey the steel, ensuring that the steel is in the middle area inside the test box 1, and the surface of the steel is tested by the strength testing mechanism 4 in the test cavity 2.

[0041] As a further illustration of the scheme in the embodiment, the strength testing mechanism 4 comprises a movable testing frame 21, and a limiting mounting frame 20 is fixedly arranged inside the testing cavity 2 at the upper and lower sides by means of bolts, and the movable testing frame 21 is slidably arranged inside the limiting mounting frame 20 at the upper and lower sides, and four adjusting servo cylinders 22 are fixedly arranged inside the testing cavity 2 at the upper and lower sides, and the driving ends of the adjusting servo cylinders 22 at the upper and lower sides are fixedly connected with one side of the movable testing frame 21 at the upper and lower sides respectively; the first testing cavity 23, the second testing cavity 24 and the third testing cavity 25 are sequentially arranged inside the movable testing frame 21 from front to back, and the testing assembly is arranged inside the first testing cavity 23, the second testing cavity 24 and the third testing cavity 25.

[0042] Further, the testing assembly comprises a third linear slide 28 and a connecting frame 29, the third linear slide 28 is fixedly arranged at the top of the inner wall of the first testing cavity 23, the second testing cavity 24 and the third testing cavity 25, two connecting frames 29 are slidably arranged at the bottom of the third linear slide 28 at both sides, and the control frame 30 is movably arranged inside the connecting frame 29; the testing servo cylinder 31 is fixedly arranged inside the connecting frame 29 located inside the first testing cavity 23 and the second testing cavity 24, and the driving end of the testing servo cylinder 31 is fixedly connected with one side of the control frame 30; the testing servo motor 34 is fixedly arranged at one side of the connecting frame 29 located inside the third testing cavity 25, and the output shaft of the testing servo motor 34 is fixedly connected with the inside of the control frame 30; the micro-cylinder 33 is fixedly arranged inside the control frame 30, and the deforming control block 32 is slidably arranged at one side of the control frame 30, and the driving end of the micro-cylinder 33 is fixedly connected with one side of the deforming control block 32.

[0043] Further, the second linear slide 26 is fixedly arranged at both sides of the first testing cavity 23, the second testing cavity 24 and the third testing cavity 25, and the workpiece positioning frame 27 is slidably arranged at the left and right sides of the second linear slide 26, and the workpiece positioning frame 27 adopts an L-shaped structure design.

[0044] It needs to be explained that the surface of the steel is tested by the test assembly inside the first test cavity 23, the workpiece positioning frame 27 on the left and right sides is controlled by the second linear slide 26 on both sides of the first test cavity 23 to clamp and position the steel on both sides between the upper and lower first test cavities 23, then the two groups of connecting frames 29 inside the upper and lower first test cavities 23 are respectively above and below the steel, the upper and lower connecting frames 29 are respectively opposite, the micro electric cylinder 33 inside the control frame 30 is controlled according to the shape of the surface of the steel to drive the end of the control deformation regulating block 32 to retract into the inside of the control frame 30, so that one side of the control frame 30 is attached to the surface of the steel, the test servo cylinder 31 inside the connecting frame 29 is controlled to output test pressure, the third linear slide 28 is controlled to regulate the upper and lower connecting frames 29 to test the compressive strength of the surface of the steel, and the surface of the steel is tested by multiple points; the surface of the steel is tested by the test assembly inside the second test cavity 24, the upper and lower connecting frames 29 are controlled to be staggered opposite, the test servo cylinder 31 is controlled to output test pressure, and the connecting frame 29 is controlled to be staggered opposite to test the bending strength of the surface of the steel; the surface of the steel is tested by the test assembly inside the third test cavity 25, the upper and lower surfaces of the steel are clamped by the control frame 30, and the test servo motor 34 is controlled to output the shaft of the control frame 30 to apply a torsion to the steel, and the surface of the steel is tested by the torsion strength test operation; with the continuous conveying of the steel in the test machine box 1, the surface of the steel is continuously tested by multiple points in the first test cavity 23, the second test cavity 24 and the third test cavity 25.

[0045] Specifically, a test method of a steel strength testing device for building construction is as follows:

[0046] If it is necessary to test in different areas of the construction site, the device is pushed to the test station through the universal wheels around the bottom of the test machine box 1 and the moving handrail frame on the left side of the test machine box 1; after moving to the position, the universal wheel brake is locked to avoid deviation of the device during testing; according to the specifications of the steel to be tested, the automatic feeding speed, the strength test threshold and the test point density are preset in the device control system.

[0047] The end of the steel to be tested is inserted into the test cavity 2 between the front and rear automatic feeding mechanisms 3; the control system triggers the adjustment servo motor 13 to start, and its output shaft drives the double pulley 12 to rotate clockwise, and through the synchronous transmission of the belt, the single pulley 11 at the top of the two adjustment threaded rods 10 is driven to rotate clockwise, and the adjustment threaded rods 10 inside the movable limiting groove 6 are synchronously rotated clockwise; because the upper and lower surfaces of the adjustment threaded rods 10 are oppositely threaded, and are threadedly connected with the matching threaded holes 19 inside the movable mounting frame 5, the upper and lower movable mounting frames 5 slide along the adjustment threaded rods 10, until the workpiece conveying rollers 14 inside the movable mounting frames 5 are close to the upper and lower surfaces of the steel; at this time, the pushing silica gel sleeve 15 on the surface of the workpiece conveying roller 14 is in contact with the surface of the steel, which not only increases the friction, but also avoids the wear of the surface of the steel.

[0048] The first linear slide 17 on the front and rear sides of the inner wall of the adjustment movable groove 9 is started, and the movable limiting frame 16 is driven to slide to the left and right sides of the steel, until the side conveying frame 18 inside the movable limiting frame 16 is attached to the two sides of the steel; the built-in motor of the movable limiting frame 16 controls the rotation of the side conveying frame 18, and cooperates with the rotation of the workpiece conveying roller 14 to convey the steel to the strength test mechanism 4 in the middle of the test cavity 2, so that the steel is always in the middle region of the test cavity 2, avoiding test deviation, and as the automatic feeding mechanism 3 continuously conveys the steel, the steel sequentially passes through the first test cavity 23, the second test cavity 24 and the third test cavity 25 of the strength test mechanism 4, completing multi-dimensional multi-point testing.

[0049] The specific steps of multi-dimensional multi-point testing are as follows:

[0050] The first test cavity 23: multi-point compressive strength test of steel, when a certain section of the steel enters the first test cavity 23, the second linear slide 26 on both sides of the first test cavity 23 is started, and the workpiece positioning frame 27 L-shaped structure is driven to move to both sides of the steel, until the workpiece positioning frame 27 clamps both ends of the test section of the steel, realizing local fixation of the steel, the adjustment servo cylinder 22 inside the limiting mounting frame 20 is started, and the movable test frame 21 is pushed to move to the steel, so that the connecting frame 29 inside the first test cavity 23 is driven by the third linear slide 28 to slide above and below the steel and directly opposite; according to the shape of the steel surface such as round steel arc and steel plate plane, the micro cylinder 33 inside the control frame 30 is started, the extension / inset amount of the deformation control block 32 is adjusted, and one side of the control frame 30 is completely attached to the surface of the steel, the test servo cylinder 31 inside the connecting frame 29 of the first test cavity 23 is started, and its driving end applies a preset pressure to the steel; through the pressure sensor of the test servo cylinder 31 and the displacement sensor of the control frame 30, the “pressure-deformation” data is collected in real time, and whether the compressive strength of the point is up to standard is judged; at the same time, the connecting frame 29 is driven by the third linear slide 28 to move along the length direction of the steel, and the multi-point compression test of the section of the steel is completed.

[0051] The second test cavity 24: steel multi-point bending strength test, when the steel test section enters the second test cavity 24, repeat the positioning operation of the workpiece positioning frame 27 described above; adjust the connecting frame 29 inside the second test cavity 24 through the third linear slide 28, so that the upper and lower two groups of connecting frames 29 are in a "staggered opposite" state, start the test servo cylinder 31 inside the connecting frame 29 of the second test cavity 24, apply a pressure perpendicular to the length direction to the steel, simulate the bending stress scenario of the steel; collect the bending deformation of the steel through the displacement sensor, calculate the bending strength combined with the pressure data, and move the connecting frame 29 along the length direction of the steel to complete the multi-point bending test.

[0052] The third test cavity 25: steel multi-point torsional strength test, when the steel test section enters the third test cavity 25, control the workpiece positioning frame 27 to fix the two ends of the steel through the second linear slide 26; start the adjusting servo cylinder 22 to push the movable test frame 21, so that the control frame 30 inside the third test cavity 25 clamps the upper and lower surfaces of the steel, start the test servo motor 34 on one side of the connecting frame 29 of the third test cavity 25, its output shaft drives the control frame 30 to rotate around the steel axis, and a preset torsion is applied; collect "torque-rotation angle" data through the torque sensor and rotation angle sensor of the test servo motor 34, and calculate the torsional strength; move the connecting frame 29 along the length direction of the steel to complete the multi-point torsional test.

[0053] The equipment control system integrates the multi-point test data of the first test cavity 23, the second test cavity 24 and the third test cavity 25 in real time, generates a "steel full-length strength distribution map" with the steel length as the horizontal axis and the strength value as the vertical axis, and automatically labels the qualified interval and abnormal points. After the test is completed, the automatic feeding mechanism 3 outputs the steel from the test cavity 2; according to the strength distribution map, mark the qualified steel as "usable", mark the local abnormal steel as "usable after cutting the abnormal section" or "scrap", close the power components of the strength test mechanism 4, and make the movable test frame 21 and the connecting frame 29 return to the initial position; clean the debris inside the test cavity 2, turn off the power of the equipment, and complete the test.

[0054] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0055] It should be noted that, in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0056] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A steel strength testing device for construction, characterized in that: The invention comprises a test case (1), wherein a test chamber (2) is provided inside the test case (1), automatic delivery mechanisms (3) are provided on the front and rear sides of the test chamber (2), and a strength testing mechanism (4) is provided in the middle of the test chamber (2); The automatic feeding mechanism (3) is capable of adaptively clamping and continuously conveying steel materials of different specifications. The strength testing mechanism (4) comprises a first test chamber (23), a second test chamber (24), and a third test chamber (25) sequentially arranged along the conveying direction of the steel materials, so as to sequentially perform multi-point tests on the compressive strength, bending strength, and torsional strength of the continuously conveyed steel materials, and generate a strength distribution map of the steel materials.

2. A steel strength testing equipment for construction according to claim 1, characterized in that: Universal wheels are fixedly provided on all four sides of the bottom of the test box (1), and a movable armrest is fixedly provided on the left side of the test box (1).

3. A steel strength testing equipment for construction according to claim 1, characterized in that: The automatic feeding mechanism (3) comprises a movable mounting frame (5), a workpiece conveying roller (14) and a movable limiting frame (16); movable limiting grooves (6) are provided on the left and right sides of the interior of the test box (1); mounting grooves (7) are provided on the tops of the two movable limiting grooves (6); the movable mounting frames (5) are symmetrically slidably provided on the upper and lower sides of the interiors of the two movable limiting grooves (6), and adjusting threaded rods (10) are rotatably provided inside the interiors of the two movable limiting grooves (6); matching threaded holes (19) are provided on both sides of the interiors of the two movable mounting frames (5), and the interiors of the matching threaded holes (19) are threadedly connected to the surface of the adjusting threaded rod (10); and external threads with opposite rotation directions are provided on the upper and lower sides of the surface of the adjusting threaded rod (10) to drive the upper and lower movable mounting frames (5) to slide relative to or opposite to each other along the adjusting threaded rod (10).

4. A steel strength testing equipment for construction according to claim 3, characterized in that: An adjusting servo motor (13) is fixedly provided in the middle of the interior of the installation groove (7), and a mounting partition (8) is fixedly provided at the lower part of the interior of the installation groove (7), the top ends of the two adjusting threaded rods (10) pass through the mounting partition (8) and extend to the top of the installation groove (7), and the top ends of the two adjusting threaded rods (10) are rotatably connected to the top of the inner wall of the installation groove (7); the top ends of the two adjusting threaded rods (10) are fixedly provided with a single pulley (11), and one end of the output shaft of the adjusting servo motor (13) is fixedly provided with a double pulley (12), and the surface of the double pulley (12) is respectively connected to the surface of the two single pulleys (11) through a belt.

5. The steel strength testing equipment for construction according to claim 3, characterized in that: The inside of the two movable mounting frames (5) is provided with an adjustable movable groove (9), and the inside of the two adjustable movable grooves (9) is provided with the workpiece conveying roller (14) rotatably, and the two workpiece conveying rollers (14) are rotatably connected to one side of the inner wall of the adjustable movable groove (9) through a built-in motor, and a push silicone sleeve (15) is fixedly provided in the middle of the surface of the workpiece conveying roller (14); the front and rear sides of the inner wall of the adjustable movable groove (9) are fixedly provided with a first linear slide (17), and the adjustable movable groove (9) is provided with a first linear slide (17) rotatably, and the workpiece conveying roller (14) is fixedly provided with a push silicone sleeve (15) ... The movable limit frame (16) is slidably provided on both sides of the interior of the movable groove (9), and the front and rear sides of the movable limit frame (16) are slidably connected to one side of the two first linear slides (17) respectively, and the interior of the movable limit frame (16) is slidably connected to the surface of the workpiece conveying roller (14), and a side conveying frame (18) is provided above the interior of the movable limit frame (16) to rotate through a built-in motor, and one side of the side conveying frame (18) extends to one side of the movable limit frame (16).

6. A steel strength testing equipment for construction according to claim 1, characterized in that: The strength testing mechanism (4) comprises a movable test frame (21), and the upper and lower parts of the interior of the test chamber (2) are fixedly provided with limit mounting frames (20) by bolts, and the movable test frames (21) are slidably provided inside the two limit mounting frames (20), and four adjustment servo electric cylinders (22) are fixedly provided at the upper and lower parts of the interior of the test chamber (2), and the driving ends of the upper and lower adjustment servo electric cylinders (22) are respectively fixedly connected to one side of the upper and lower movable test frames (21); the interiors of the two movable test frames (21) are sequentially provided with the first test chamber (23), the second test chamber (24) and the third test chamber (25) from front to back, and the interiors of the first test chamber (23), the second test chamber (24) and the third test chamber (25) are all provided with test components.

7. A steel strength testing equipment for construction according to claim 6, characterized in that: The test assembly includes a third linear slide (28) and a connecting frame (29), the top of the inner wall of the first test cavity (23), the second test cavity (24) and the third test cavity (25) are fixedly provided with the third linear slide (28), and two connecting frames (29) are slidably provided on both sides of the bottom of the third linear slide (28), and a control frame (30) is movably provided inside the connecting frame (29).

8. A steel strength testing equipment for construction according to claim 7, characterized in that: A test servo electric cylinder (31) is fixedly arranged inside the connecting frame (29) located inside the first test cavity (23) and the second test cavity (24), and the driving ends of the two test servo electric cylinders (31) are fixedly connected to one side of the control frame (30); a test servo motor (34) is fixedly arranged on one side of the connecting frame (29) located inside the third test cavity (25), and one end of the output shaft of the test servo motor (34) is fixedly connected to the inside of the control frame (30); a plurality of micro electric cylinders (33) are fixedly arranged inside the control frame (30), and a plurality of deformation control blocks (32) are also slidably arranged on one side of the control frame (30), and the driving ends of the plurality of micro electric cylinders (33) are respectively fixedly connected to one side of the plurality of deformation control blocks (32).

9. The steel strength testing equipment for construction according to claim 6, characterized in that: A second linear slide (26) is fixedly provided on both sides of the first test chamber (23), the second test chamber (24) and the third test chamber (25), and a workpiece positioning frame (27) is slidably provided on the left and right sides of the second linear slide (26), and the workpiece positioning frame (27) adopts an L-shaped structural design.

10. A steel strength testing device for construction according to any one of claims 1 to 9, characterized in that: The equipment is equipped with a control system, which can generate a strength distribution map in the longitudinal direction of the steel according to the test data, and mark the qualified strength intervals and abnormal points.

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