Concrete flexural tensile test device

Abstract

The utility model relates to the technical field of concrete tests, in particular to a concrete flexural-tensile test device which is characterized in that moving tables are pushed in the grooving direction of a sliding groove, so that the two moving tables are close to each other oppositely, then a to-be-tested piece is placed on an L-shaped support, a pressing plate is pressed downwards, and then the to-be-tested piece is placed on the L-shaped support; the pressing plate and the L-shaped support are connected through a bolt, and clamping and fastening of the to-be-tested piece are completed; then, a stepping motor at the top is started, the stepping motor drives the pressure testing machine body to move horizontally through a threaded rod, and therefore single-face detection of the to-be-tested piece is completed; then, a gear motor in the dustproof cover is started, so that the to-be-detected piece is turned over, comprehensive detection is completed, and the detection precision is improved; the electric telescopic rods on the two sides can be started after the bending resistance test, the to-be-tested piece is clamped under the cooperation of the abutting plate, then the thrust oil cylinder is reversely started, and whether the to-be-tested piece reaches the standard or not is judged according to the tension detection value of the tension sensor.

Description

Technical Field

[0001] The present application relates to the technical field of concrete testing, and in particular to a concrete bending and tension testing device. Background Art

[0002] At present, the use of concrete is very wide. It is not only used in various civil engineering projects, but also in shipbuilding, machinery industry, ocean development, geothermal engineering, etc. At the same time, concrete also has the characteristics of high compressive strength, good durability and a wide range of strength grades.

[0003] After searching, the publication number: CN213544268U discloses a concrete bending resistance test device. When the staff places one end of the concrete sample core on the clamping block above the support column, the first clamping block and the second clamping block above the support column are locked by tightening the bolts, thereby locking one end of the concrete sample core. However, according to the length of the concrete sample core, the second slider can be moved to a suitable position in the slide groove, thereby driving the second motor rotating device to move to a suitable configuration. When the other end of the concrete sample core is locked in the same way, after the bottom fixing device undergoes displacement changes, the top stamping device changes accordingly. The first motor is operated to drive the screw rod to rotate, thereby causing the threaded block to move on the screw rod. At the same time, the first slider assists in moving, thereby driving the stamping device to move. When the fixing device is completed and a test is required, the cylinder operates to drive the piston rod to drive the stamping block to press down on the outer surface of the concrete sample core. After the test data is saved, the stamping device is recovered.

[0004] With respect to the above-mentioned related technologies, the inventors believe that there are the following technical defects that need to be improved: this device can only realize the bending resistance test of concrete, and records the test values ​​by crushing the middle part of the concrete, which is not conducive to the comprehensive detection of concrete, and this device is not equipped with relevant tensile test, thereby reducing the accuracy of the test. Utility Model Content

[0005] The present application provides a concrete bending tensile test device to improve the following technical problems:.

[0006] The present application provides a concrete bending tensile test device, which adopts the following technical solution:

[0007] A concrete flexural tensile testing device comprises a high-efficiency flexural tensile testing mechanism, wherein the high-efficiency flexural tensile testing mechanism comprises a workbench, a support frame, a pressure testing machine body, a movable plate, a positioning frame, a backing plate and an adjusting assembly, wherein the support frame is fixedly connected to the top of the workbench, the adjusting assembly is fixedly connected to the top of the support frame, the pressure testing machine body is threadedly connected to one side of the adjusting assembly, the movable plate is slidably sleeved on both sides of the top of the workbench, the positioning frame is fixedly connected to the outer side of the movable plate, the backing plate is slidably connected to the inner side of the outer side of the positioning frame, and a flipping portion is also provided in the middle of the workbench.

[0008] In an achievable technical solution of the present application, the adjustment assembly includes a stepper motor, a threaded rod and a movable frame, the motor shaft of the stepper motor is fixedly connected to one end of the threaded rod through a coupling, the threaded rod is threadedly sleeved on the middle part of the movable frame, and one side of the movable frame is threadedly connected to the surface of the pressure testing machine body.

[0009] In an achievable technical solution of the present application, a thread groove matching the size of the threaded rod is formed through the interior of the movable frame.

[0010] In an achievable technical solution of the present application, the flipping part includes a moving platform, a dust cover, a reduction motor, a drive shaft, an L-shaped support and a pressure plate. The moving platform is slidably connected to the top of the workbench, the dust cover is fixedly connected to the outside of the moving platform, the motor shaft of the reduction motor is fixedly connected to the inner side of the drive shaft through a coupling, the L-shaped support is fixedly connected to the outside of the drive shaft, and the pressure plate is threadedly connected to both sides of the bottom of the L-shaped support.

[0011] In an achievable technical solution of the present application, a propulsion cylinder, a push rod and a tension sensor are also provided on the inner side of the workbench, the piston end of the propulsion cylinder is fixedly connected to one end of the push rod, the outer side of the push rod is fixedly connected to the surface of the movable plate, and the tension sensor is clamped on the outer side of the push rod.

[0012] In a feasible technical solution of the present application, an ash pump and an air intake pipe are further provided on the inner side of the middle portion of the workbench, and the input end of the ash pump is fixedly connected to the bottom surface of the air intake pipe.

[0013] In a feasible technical solution of the present application, an electric telescopic rod is further provided on the outer side of the positioning frame, and the output end of the electric telescopic rod is fixedly connected to the middle part of the abutment plate.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. According to the different sizes and thicknesses of the finished concrete products, the device can move relative to or away from the moving platform during operation. The bottom of the moving platform moves smoothly along the slide groove in the middle of the workbench. Then, the workpiece to be tested is placed at the bottom of the L-shaped bracket. Then, the upper pressure plate is pressed downward so that the pressure plate is close to the surface of the workpiece to be tested. Then, bolts are used to screw with the threaded holes on both sides of the L-shaped bracket and the pressure plate to complete the clamping of concrete parts of different thicknesses. To facilitate the comprehensive inspection of concrete parts, the reduction motor inside the dust cover can be started through the control end. The reduction motor drives the drive shaft and the clamped concrete parts on the outside to rotate and complete the flipping, thereby improving the bending resistance inspection accuracy of the finished product;

[0016] 2. During the inspection, start the stepper motor on the top of the support frame, and its motor shaft drives the threaded rod to rotate. Under the cooperation of the threaded surfaces of the two sets of threaded rods and the screw rods with built-in thread grooves of the movable frame, the pressure testing machine body connected to the opposite side completes the horizontal movement smoothly. At the same time, start the press body, and determine the current pressure value according to the readings of the internal reading meter and oscilloscope. According to the test results, deformation and fracture degree of the finished product, it is judged whether the finished product meets the construction requirements. In this process, the fine dust worn off the contact surface can be sucked from the air intake pipe to the outside of the workbench through the ash pump to ensure the cleanliness of the workbench.

[0017] 3. This device can start the propulsion cylinders on both sides while performing the bending test. The piston ends of the cylinders push and pull the push rods, which push and pull the outer movable plate and the positioning frame to bring the abutment plate close to the workpiece to be tested. Then, the electric telescopic rods on the outer side of the positioning frame are started in both directions to ensure that the push rods can firmly rest against the surface of the workpiece to be tested. Then, the propulsion cylinders are reversed to make the workpiece to be tested subject to bidirectional stretching. Through the control algorithm and processing analysis of the internal tension sensor, the corresponding tension signal is calculated and fed back to the control end, and the product qualification parameters are used to determine whether the workpiece to be tested meets the construction requirements, so that this device can simultaneously complete efficient bending and stretching tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a concrete flexural tensile testing device according to an embodiment of the present application.

[0020] Figure 2 It is a cross-sectional view of the outer side of the workbench in the embodiment of the present application.

[0021] Figure 3 3 is a distribution diagram of the thread grooves in the embodiment of the present application.

[0022] Figure 4 It is a distribution diagram of the ash pump in the embodiment of the present application.

[0023] Figure 5 It is a cross-sectional rendering of the interior of the dust cover in the embodiment of the present application.

[0024] Description of reference numerals:

[0025] 1. High-efficiency bending tensile test mechanism; 2. Flipping part; 3. Threaded groove; 4. Propelling cylinder; 5. Push rod; 6. Tension sensor; 7. Ash pump; 8. Air intake pipe; 9. Electric telescopic rod; 10. Slide; 11. Workbench; 12. Support frame; 13. Pressure testing machine body; 14. Movable plate; 15. Positioning frame; 16. Abutment plate; 17. Adjustment assembly; 21. Moving table; 22. Dust cover; 23. Reducer motor; 24. Driving shaft; 25. L-shaped support; 26. Press plate; 171. Stepper motor; 172. Threaded rod; 173. Movable frame. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The present application embodiment discloses a concrete bending tensile test device. Figure 1 The concrete flexural tensile test device includes a high-efficiency flexural tensile test mechanism 1, which includes a workbench 11, a support frame 12, a pressure testing machine body 13, a movable plate 14, a positioning frame 15, a back plate 16 and an adjustment component 17. The support frame 12 is fixedly connected to the top of the workbench 11, the adjustment component 17 is fixedly connected to the top of the support frame 12, the pressure testing machine body 13 is threadedly connected to one side of the adjustment component 17, the movable plate 14 is slidably sleeved on both sides of the top of the workbench 11, the positioning frame 15 is fixedly connected to the outer side of the movable plate 14, the back plate 16 is slidably connected to the outer side of the positioning frame 15, and a flip part 2 is also provided in the middle of the workbench 11.

[0032] The adjustment assembly 17 includes a stepper motor 171, a threaded rod 172 and a movable frame 173. The motor shaft of the stepper motor 171 is fixedly connected to one end of the threaded rod 172 through a coupling. The threaded rod 172 is threadedly sleeved on the middle part of the movable frame 173. One side of the movable frame 173 is screwed to the surface of the pressure testing machine body 13.

[0033] A thread groove 3 matching the size of the threaded rod 172 is formed through the interior of the movable frame 173 .

[0034] The flipping part 2 includes a moving table 21, a dust cover 22, a reduction motor 23, a driving shaft 24, an L-shaped support 25 and a pressure plate 26. The moving table 21 is slidably connected to the top of the workbench 11, the dust cover 22 is fixedly connected to the outer side of the moving table 21, the motor shaft of the reduction motor 23 is fixedly connected to the inner side of the driving shaft 24 through a coupling, the L-shaped support 25 is fixedly connected to the outer side of the driving shaft 24, and the pressure plate 26 is threadedly connected to both sides of the bottom of the L-shaped support 25.

[0035] A propulsion cylinder 4, a push rod 5 and a tension sensor 6 are also provided on the inner side of the workbench 11. The piston end of the propulsion cylinder 4 is fixedly connected to one end of the push rod 5, the outer side of the push rod 5 is fixedly connected to the surface of the movable plate 14, and the tension sensor 6 is clamped on the outer side of the push rod 5.

[0036] An ash pump 7 and an air intake pipe 8 are also provided on the inner side of the middle of the workbench 11 . The input end of the ash pump 7 is fixedly connected to the bottom surface of the air intake pipe 8 .

[0037] An electric telescopic rod 9 is also provided on the outer side of the positioning frame 15 , and the output end of the electric telescopic rod 9 is fixedly connected to the middle part of the abutment plate 16 .

[0038] The use process of the concrete bending tensile test device in the embodiment of the present application is roughly as follows:

[0039] The movable platform 21 is pushed along the slotting direction of the slide slot 10 so that the two sets of movable platforms 21 are close to each other, and then the workpiece to be tested is placed on the L-shaped support 25, and the pressure plate 26 is pressed down, and the pressure plate 26 and the L-shaped support 25 are connected with bolts to complete the clamping and fastening of the workpiece to be tested; then the stepper motor 171 on the top is started, and the stepper motor 171 drives the pressure testing machine body 13 to move horizontally through the threaded rod 172, thereby completing the single-sided detection of the workpiece to be tested; then the reduction motor 23 inside the dust cover 22 is started, so that the workpiece to be tested is turned over and fully tested, thereby improving the detection accuracy; and the electric telescopic rods 9 on both sides can be started after the bending test, and the workpiece to be tested can be clamped with the cooperation of the plate 16, and then the propulsion cylinder 4 is reversed to determine whether the workpiece to be tested meets the standard according to the tension detection value of the tension sensor 6.

[0040] The beneficial technical effects of the concrete bending tensile test device of the embodiment of the present application are roughly as follows:

[0041] The workpiece to be tested is placed at the bottom of the L-shaped bracket, and then the upper pressure plate 26 is pressed downward so that the pressure plate 26 is tightly attached to the surface of the workpiece to be tested. Then, bolts are respectively screwed to the threaded holes on both sides of the L-shaped bracket and the pressure plate 26 to complete the clamping of concrete pieces of different thicknesses. To facilitate the comprehensive inspection of concrete pieces, the reduction motor 23 inside the dust cover 22 can be started through the control end. The reduction motor 23 drives the drive shaft 24 and the clamped concrete piece on the outside to rotate and complete the flipping, thereby improving the bending resistance inspection accuracy of the finished product; under the cooperation of the threaded surfaces of the two sets of threaded rods 172 and the screw rods in the built-in thread grooves 3 of the movable frame 173, the pressure testing machine body 13 connected to the opposite side thereof completes the horizontal smooth movement, and at the same time, the press body is started, and according to the internal readings, the pressure testing machine body 13 is rotated horizontally. The current pressure value is determined by the readings of the meter and oscilloscope, and whether the finished product meets the construction requirements is determined based on the test results, deformation and fracture degree of the finished product. In this process, the fine dust worn off the contact surface can be sucked from the air intake pipe 8 to the outside of the workbench 11 through the ash pump 7 to ensure the cleanliness of the workbench 11; the electric telescopic rod 9 on the outside of the positioning frame 15 is bidirectionally started to ensure that the push rod 5 can firmly rest on the surface of the workpiece to be tested, and then the thrust cylinder 4 is reversed to make the workpiece to be tested subject to bidirectional tension. After the control algorithm and processing analysis of the internal tension sensor 6, the corresponding tension signal is calculated and fed back to the control end, and the product qualification parameters are used to determine whether the workpiece to be tested meets the construction requirements, so that the device can simultaneously complete the efficient detection of bending resistance and tensile resistance.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. A concrete bending tensile test device, characterized in that: The invention comprises a high-efficiency bending tensile testing mechanism (1), wherein the high-efficiency bending tensile testing mechanism (1) comprises a workbench (11), a support frame (12), a pressure testing machine body (13), a movable plate (14), a positioning frame (15), a stop plate (16) and an adjustment component (17), wherein the support frame (12) is fixedly connected to the top of the workbench (11), the adjustment component (17) is fixedly connected to the top of the support frame (12), the pressure testing machine body (13) is threadedly connected to one side of the adjustment component (17), the movable plate (14) is slidably sleeved on both sides of the top of the workbench (11), the positioning frame (15) is fixedly connected to the outer side of the movable plate (14), the stop plate (16) is slidably connected to the inner side of the outer side of the positioning frame (15), and a turning portion (2) is also provided in the middle of the workbench (11).

2. The concrete bending tensile test device according to claim 1 is characterized in that: The adjustment assembly (17) comprises a stepper motor (171), a threaded rod (172) and a movable frame (173); the motor shaft of the stepper motor (171) is fixedly connected to one end of the threaded rod (172) via a coupling; the threaded rod (172) is threadedly sleeved on the middle part of the movable frame (173); and one side of the movable frame (173) is threadedly connected to the surface of the pressure testing machine body (13).

3. The concrete bending tensile test device according to claim 2 is characterized in that: A thread groove (3) matching the size of the threaded rod (172) is formed through the interior of the movable frame (173).

4. The concrete bending tensile test device according to claim 1, characterized in that: The flip part (2) comprises a moving platform (21), a dust cover (22), a reduction motor (23), a driving shaft (24), an L-shaped support (25) and a pressing plate (26); the moving platform (21) is slidably connected to the top of the working table (11); the dust cover (22) is fixedly connected to the outer side of the moving platform (21); the motor shaft of the reduction motor (23) is fixedly connected to the inner side of the driving shaft (24) through a coupling; the L-shaped support (25) is fixedly connected to the outer side of the driving shaft (24); and the pressing plate (26) is threadedly connected to both sides of the bottom of the L-shaped support (25).

5. The concrete bending tensile test device according to claim 1, characterized in that: The inner side of the workbench (11) is also provided with a propulsion cylinder (4), a push rod (5) and a tension sensor (6); the piston end of the propulsion cylinder (4) is fixedly connected to one end of the push rod (5); the outer side of the push rod (5) is fixedly connected to the surface of the movable plate (14); and the tension sensor (6) is clamped on the outer side of the push rod (5).

6. The concrete bending tensile test device according to claim 5, characterized in that: An ash extraction pump (7) and an air intake pipe (8) are also provided on the inner side of the middle portion of the workbench (11), and the input end of the ash extraction pump (7) is fixedly connected to the bottom surface of the air intake pipe (8).

7. The concrete bending tensile test device according to claim 1, characterized in that: An electric telescopic rod (9) is also provided on the outer side of the positioning frame (15), and the output end of the electric telescopic rod (9) is fixedly connected to the middle part of the abutment plate (16).

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