Concrete crack resistance detection device

Abstract

The utility model provides a concrete crack resistance detection device, and belongs to the technical field of building construction. According to the technical scheme, the device comprises a working table, a circular rotating disc is arranged on the working table, a plurality of mounting grooves distributed along the circumference are formed in the rotating disc, the mounting grooves penetrate through the outer side arc surface of the rotating disc, and concrete test blocks are placed in the mounting grooves; a mounting frame with a U-shaped structure is arranged on the working table, and an impact mechanism and a pressing mechanism which are matched with a concrete test block for use are arranged on the mounting frame. The device has the advantages of being simple in structure, convenient to use, easy to maintain and install and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a concrete anti-cracking detection device. Background Art

[0002] During the construction of the hospital, we found that the amount of concrete poured in the proton and heavy ion area was large, and the maximum thickness of the walls, floor slabs, etc. in the proton and heavy ion area reached 5 meters. For the large-volume concrete of this project, the thickness is far beyond the norm. In order to reduce the hydration heat of concrete and solve the temperature rise and crack resistance problems of large-volume concrete, we first determine a reasonable concrete mix ratio. For this purpose, we need a device that can detect whether the anti-cracking performance of concrete meets the requirements to accelerate the adjustment and optimization of the mix ratio. Utility Model Content

[0003] The utility model aims to provide a concrete anti-cracking detection device which has a simple structure, is convenient to use, and is easy to maintain and install.

[0004] The utility model is achieved through the following measures:

[0005] A concrete crack resistance detection device, characterized in that it comprises a work surface, a circular turntable is arranged on the work surface, a plurality of mounting grooves distributed along the circumference are arranged on the turntable, the mounting grooves penetrate the outer arc surface of the turntable, a concrete test block is placed in the mounting groove, and the concrete test block is a test block with a good proportion;

[0006] A U-shaped mounting frame is arranged on the work surface, and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are arranged on the mounting frame.

[0007] The specific features of the utility model also include:

[0008] The impact mechanism comprises a fixed plate arranged on the right side of the mounting frame, the fixed plate is fixed to the mounting frame by bolts, an impact cylinder is arranged on the fixed plate, an electric push rod is arranged on the bottom surface of the inner side of the impact cylinder away from the fixed plate, a top block is arranged at the free end of the electric push rod, a sleeve is arranged at the middle part of the inner side of the impact cylinder through a bracket, the top block is slidably arranged in the sleeve, a push rod is slidably arranged inside the sleeve, a spring 1 is arranged between the push rod and the top block, one end of the spring 1 is fixed to the end surface of the top block, and the other end of the spring 1 is fixed to the end surface of the push rod;

[0009] The other end of the push rod away from the spring is provided with a head, in which a sensor for detecting the pressure of the impact on the concrete test block is installed, and the fixing plate and the mounting frame are provided with through holes matching with the push rod and the head.

[0010] The clamping mechanism comprises a hydraulic cylinder arranged on the left side of the upper end of the mounting frame, a base plate 1 is arranged after the working end of the hydraulic cylinder passes downward through the mounting frame, a pressing plate 1 cooperating with the concrete test block in the mounting groove is arranged on the lower side of the base plate 1, and the pressing plate 1 can press the concrete test block;

[0011] A guiding device is arranged between the mounting frame and the first substrate, and the guiding device comprises a cylinder arranged on the mounting frame, a column is slidably arranged in the cylinder, and a free end of the column is arranged on the first substrate.

[0012] The right side of the upper end of the mounting frame is also provided with a pressing device for use with the concrete test block, the pressing device comprises a round rod that passes through the mounting frame and is slidably matched with the mounting frame, the upper side of the outer periphery of the round rod is provided with a thread, the lower end of the round rod is provided with a base plate 2, the lower surface of the base plate 2 is provided with a pressing plate 2 that matches the concrete test block in the mounting groove, the round rod passing through the upper periphery of the mounting frame is provided with a matching nut, the outer periphery of the round rod is provided with a spring 2, one end of the spring 2 is fixed to the mounting frame, and the other end of the spring 2 is fixed to the base plate 2. When the impact cylinder is pushed against the concrete, the pressing device can avoid overturning the concrete test block. When the pressing device is needed to work, the nut is removed, and the pressing plate 2 will be pressed on the corresponding concrete test block under the action of the spring 2. When the pressing device is not needed to work, the pressing plate 2 is manually lifted, and the round rod is locked by the nut, so that the pressing plate 2 is separated from the concrete test block in the mounting groove.

[0013] An anti-slip fixing device is arranged on the left side of the work table, and the anti-slip fixing device includes a threaded hole arranged on the side of the work table, a matching long bolt is arranged in the threaded hole, a rotating sleeve is arranged on the outer periphery of the long bolt for rotation, a pad is arranged on the rotating sleeve, the lower side of the pad slides against the work table, an anti-skid plate is arranged on the pad, and a rubber pad is arranged on the outer side of the anti-skid plate facing the turntable, and when the long bolt is rotated, the rubber pad will approach the turntable until it is pressed against the outer side of the turntable, and at this time, the pad will be inserted into the gap between the turntable and the work table, so that the turntable can be prevented from rotating during detection.

[0014] Mounting holes 1 are provided on both side surfaces of the mounting groove, clamps are slidably provided in the mounting holes 1 on both sides, a plurality of springs 3 are provided between the clamps and the corresponding inner bottom surfaces of the mounting holes 1, one end of the spring 3 is provided on the clamps, and the other end of the spring 3 is provided on the inner bottom surface of the mounting hole 1, and the clamps on both sides can clamp and fix the concrete test block with a good proportion placed in the mounting groove.

[0015] A motor is arranged just below the center of the work surface, and the turntable is arranged on the periphery of the output shaft of the motor after passing through the work surface upward. Specifically, a second mounting hole is arranged at the center of the work surface, and the second mounting hole is used to mount the output shaft of the motor.

[0016] A plurality of supporting legs are arranged on the lower side of the work surface, and universal wheels are arranged on the supporting legs to facilitate the movement of the device.

[0017] Working principle: During operation, the concrete test block is placed in the installation groove and clamped by the two clamping plates. Then when the concrete test block rotates to the left, the hydraulic cylinder works, and the pressure plate presses down the concrete test block to detect anti-cracking. When the concrete test block moves to the impact cylinder on the right, an impact test is carried out to detect the anti-cracking performance.

[0018] The beneficial effects of the utility model are:

[0019] The device has the advantages of simple structure, convenient use, easy maintenance and installation. By setting support legs under the work surface, the whole device is more stable and the anti-seismic performance of the device is improved; multiple installation slots are installed on the turntable, so that the concrete test block can be fixed more conveniently to avoid the sliding of the test block affecting the test results; the electric push rod and sensor are installed in the impact cylinder to detect the crack resistance of the concrete.

[0020] The device uses a motor to drive the turntable to rotate, so that multiple installation slots can fix the concrete test blocks to be tested. The operation is simple and convenient, and the detection efficiency is improved. The workbench device is equipped with springs and bolts to play a buffering role and reduce the impact of external factors on the concrete test blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the turntable in the embodiment of the utility model.

[0023] Figure 3 It is a schematic diagram of the structure of the impact mechanism in the embodiment of the utility model.

[0024] Among them, the accompanying drawings are marked as follows: 1. work surface; 2. motor; 3. support leg; 4. turntable; 5. mounting groove; 6. mounting hole two; 7. spring three; 8. clamp; 9. mounting frame; 10. fixed plate; 11. bolt; 12. impact cylinder; 13. electric push rod; 14. push block; 15. sleeve; 16. push rod; 17. push head; 18. pad; 19. anti-skid plate; 20. rotating sleeve; 21. long bolt; 22. hydraulic cylinder; 23. base plate one; 24. pressure plate one; 25. round rod; 26. base plate two; 27. pressure plate two. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0029] Example 1

[0030] See also Figure 1A concrete crack resistance detection device comprises a work surface 1, a circular turntable 4 is arranged on the work surface 1, a plurality of mounting grooves 5 distributed along the circumference are arranged on the turntable 4, the mounting grooves 5 pass through the outer arc surface of the turntable 4, a concrete test block is placed in the mounting groove 5, and the concrete test block is a test block with a good proportion;

[0031] A U-shaped mounting frame 9 is provided on the work surface 1 , and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame 9 .

[0032] Example 2

[0033] See also Figure 1-3 A concrete crack resistance detection device comprises a work surface 1, a circular turntable 4 is arranged on the work surface 1, a plurality of mounting grooves 5 distributed along the circumference are arranged on the turntable 4, the mounting grooves 5 pass through the outer arc surface of the turntable 4, a concrete test block is placed in the mounting groove 5, and the concrete test block is a test block with a good proportion;

[0034] A U-shaped mounting frame 9 is provided on the work surface 1 , and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame 9 .

[0035] The impact mechanism includes a fixed plate 10 arranged on the right side of the mounting frame 9, the fixed plate 10 is fixed to the mounting frame 9 by bolts 11, an impact cylinder 12 is arranged on the fixed plate 10, an electric push rod 13 is arranged on the bottom surface of the inner side of the impact cylinder 12 away from the fixed plate 10, a top block 14 is arranged at the free end of the electric push rod 13, a sleeve 15 is arranged at the middle part of the inner side of the impact cylinder 12 through a bracket, the top block 14 is slidably arranged in the sleeve 15, a push rod 16 is slidably arranged inside the sleeve 15, a spring 1 is arranged between the push rod 16 and the top block 14, one end of the spring 1 is fixed to the end surface of the top block 14, and the other end of the spring 1 is fixed to the end surface of the push rod 16;

[0036] A head 17 is provided at the other end of the push rod 16 away from the spring, and a sensor for detecting the pressure of the impact concrete test block is installed in the head 17. Through holes cooperating with the push rod 16 and the head 17 are provided on the fixed plate 10 and the mounting frame 9.

[0037] The clamping mechanism includes a hydraulic cylinder 22 arranged on the left side of the upper end of the mounting frame 9. A base plate 23 is arranged after the working end of the hydraulic cylinder 22 passes downward through the mounting frame 9. A pressing plate 24 cooperating with the concrete test block in the mounting groove 5 is arranged on the lower side of the base plate 23. The pressing plate 24 can press the concrete test block.

[0038] A guiding device is arranged between the mounting frame 9 and the base plate 23 , and the guiding device comprises a cylinder arranged on the mounting frame 9 , a cylinder is slidably arranged in the cylinder, and a free end of the cylinder is arranged on the base plate 23 .

[0039] Example 3

[0040] See also Figure 1-3 A concrete crack resistance detection device comprises a work surface 1, a circular turntable 4 is arranged on the work surface 1, a plurality of mounting grooves 5 distributed along the circumference are arranged on the turntable 4, the mounting grooves 5 pass through the outer arc surface of the turntable 4, a concrete test block is placed in the mounting groove 5, and the concrete test block is a test block with a good proportion;

[0041] A U-shaped mounting frame 9 is provided on the work surface 1 , and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame 9 .

[0042] The impact mechanism includes a fixed plate 10 arranged on the right side of the mounting frame 9, the fixed plate 10 is fixed to the mounting frame 9 by bolts 11, an impact cylinder 12 is arranged on the fixed plate 10, an electric push rod 13 is arranged on the bottom surface of the inner side of the impact cylinder 12 away from the fixed plate 10, a top block 14 is arranged at the free end of the electric push rod 13, a sleeve 15 is arranged at the middle part of the inner side of the impact cylinder 12 through a bracket, the top block 14 is slidably arranged in the sleeve 15, a push rod 16 is slidably arranged inside the sleeve 15, a spring 1 is arranged between the push rod 16 and the top block 14, one end of the spring 1 is fixed to the end surface of the top block 14, and the other end of the spring 1 is fixed to the end surface of the push rod 16;

[0043] A head 17 is provided at the other end of the push rod 16 away from the spring, and a sensor for detecting the pressure of the impact concrete test block is installed in the head 17. Through holes cooperating with the push rod 16 and the head 17 are provided on the fixed plate 10 and the mounting frame 9.

[0044] The clamping mechanism includes a hydraulic cylinder 22 arranged on the left side of the upper end of the mounting frame 9. A base plate 23 is arranged after the working end of the hydraulic cylinder 22 passes downward through the mounting frame 9. A pressing plate 24 cooperating with the concrete test block in the mounting groove 5 is arranged on the lower side of the base plate 23. The pressing plate 24 can press the concrete test block.

[0045] A guide device is arranged between the mounting frame 9 and the base plate 23 , and the guide device comprises a cylinder arranged on the mounting frame 9 , a column is slidably arranged in the cylinder, and a free end of the column is arranged on the base plate 23 .

[0046] The right side of the upper end of the mounting frame 9 is also provided with a pressing device for use with a concrete test block. The pressing device includes a round rod 25 that passes through the mounting frame 9 and slides with the mounting frame. The upper side of the outer periphery of the round rod 25 is provided with a thread. The lower end of the round rod 25 is provided with a base plate 26. The lower surface of the base plate 26 is provided with a pressing plate 27 that cooperates with the concrete test block in the mounting groove 5. The round rod 25 passes through the upper periphery of the mounting frame 9 and is provided with a matching nut. The outer periphery of the round rod 25 is provided with a spring 2. One end of the spring 2 is fixed on the mounting frame 9, and the other end of the spring 2 is fixed on the base plate 26. When the impact cylinder 12 pushes against the concrete, the pressing device can avoid overturning the concrete test block. When the pressing device needs to work, the nut is removed, and the pressing plate 27 will be pressed on the corresponding concrete test block under the action of the spring 2. When the pressing device is not needed to work, the pressing plate 27 is manually lifted, and the round rod 25 is locked by the nut, so that the pressing plate 27 is separated from the concrete test block in the mounting groove 5.

[0047] Example 4

[0048] See also Figure 1-3 A concrete crack resistance detection device comprises a work surface 1, a circular turntable 4 is arranged on the work surface 1, a plurality of mounting grooves 5 distributed along the circumference are arranged on the turntable 4, the mounting grooves 5 pass through the outer arc surface of the turntable 4, a concrete test block is placed in the mounting groove 5, and the concrete test block is a test block with a good proportion;

[0049] A U-shaped mounting frame 9 is provided on the work surface 1 , and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame 9 .

[0050] The impact mechanism includes a fixed plate 10 arranged on the right side of the mounting frame 9, the fixed plate 10 is fixed to the mounting frame 9 by bolts 11, an impact cylinder 12 is arranged on the fixed plate 10, an electric push rod 13 is arranged on the bottom surface of the inner side of the impact cylinder 12 away from the fixed plate 10, a top block 14 is arranged at the free end of the electric push rod 13, a sleeve 15 is arranged at the middle part of the inner side of the impact cylinder 12 through a bracket, the top block 14 is slidably arranged in the sleeve 15, a push rod 16 is slidably arranged inside the sleeve 15, a spring 1 is arranged between the push rod 16 and the top block 14, one end of the spring 1 is fixed to the end surface of the top block 14, and the other end of the spring 1 is fixed to the end surface of the push rod 16;

[0051] A head 17 is provided at the other end of the push rod 16 away from the spring, and a sensor for detecting the pressure of the impact concrete test block is installed in the head 17. Through holes cooperating with the push rod 16 and the head 17 are provided on the fixed plate 10 and the mounting frame 9.

[0052] The clamping mechanism includes a hydraulic cylinder 22 arranged on the left side of the upper end of the mounting frame 9. A base plate 23 is arranged after the working end of the hydraulic cylinder 22 passes downward through the mounting frame 9. A pressing plate 24 cooperating with the concrete test block in the mounting groove 5 is arranged on the lower side of the base plate 23. The pressing plate 24 can press the concrete test block.

[0053] A guiding device is arranged between the mounting frame 9 and the base plate 23 , and the guiding device comprises a cylinder arranged on the mounting frame 9 , a cylinder is slidably arranged in the cylinder, and a free end of the cylinder is arranged on the base plate 23 .

[0054] The right side of the upper end of the mounting frame 9 is also provided with a pressing device for use with a concrete test block. The pressing device includes a round rod 25 that passes through the mounting frame 9 and slides with the mounting frame. The upper side of the outer periphery of the round rod 25 is provided with a thread. The lower end of the round rod 25 is provided with a base plate 26. The lower surface of the base plate 26 is provided with a pressing plate 27 that cooperates with the concrete test block in the mounting groove 5. The round rod 25 passes through the upper periphery of the mounting frame 9 and is provided with a matching nut. The outer periphery of the round rod 25 is provided with a spring 2. One end of the spring 2 is fixed on the mounting frame 9, and the other end of the spring 2 is fixed on the base plate 26. When the impact cylinder 12 pushes against the concrete, the pressing device can avoid overturning the concrete test block. When the pressing device needs to work, the nut is removed, and the pressing plate 27 will be pressed on the corresponding concrete test block under the action of the spring 2. When the pressing device is not needed to work, the pressing plate 27 is manually lifted, and the round rod 25 is locked by the nut, so that the pressing plate 27 is separated from the concrete test block in the mounting groove 5.

[0055] An anti-skid fixing device is arranged on the left side of the work surface 1, and the anti-skid fixing device includes a threaded hole arranged on the side of the work surface 1, and a matching long bolt 21 is arranged in the threaded hole, and a rotating sleeve 20 is arranged on the outer periphery of the long bolt 21 for rotation, and a pad 18 is arranged on the rotating sleeve 20, and the lower side of the pad 18 slides against the work surface 1, and an anti-skid plate 19 is arranged on the pad 18, and a rubber pad is arranged on the outer side of the anti-skid plate 19 facing the turntable 4. When the long bolt 21 is rotated, the rubber pad will approach the turntable 4 until it is against the outer side of the turntable 4. At this time, the pad 18 will be inserted into the gap between the turntable 4 and the work surface 1, so that the turntable 4 can be prevented from rotating during detection.

[0056] Example 5

[0057] See also Figure 1-3 , see Figure 1-3 A concrete crack resistance detection device comprises a work surface 1, a circular turntable 4 is arranged on the work surface 1, a plurality of mounting grooves 5 distributed along the circumference are arranged on the turntable 4, the mounting grooves 5 pass through the outer arc surface of the turntable 4, a concrete test block is placed in the mounting groove 5, and the concrete test block is a test block with a good proportion;

[0058] A U-shaped mounting frame 9 is provided on the work surface 1 , and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame 9 .

[0059] The impact mechanism includes a fixed plate 10 arranged on the right side of the mounting frame 9, the fixed plate 10 is fixed to the mounting frame 9 by bolts 11, an impact cylinder 12 is arranged on the fixed plate 10, an electric push rod 13 is arranged on the bottom surface of the inner side of the impact cylinder 12 away from the fixed plate 10, a top block 14 is arranged at the free end of the electric push rod 13, a sleeve 15 is arranged at the middle part of the inner side of the impact cylinder 12 through a bracket, the top block 14 is slidably arranged in the sleeve 15, a push rod 16 is slidably arranged inside the sleeve 15, a spring 1 is arranged between the push rod 16 and the top block 14, one end of the spring 1 is fixed to the end surface of the top block 14, and the other end of the spring 1 is fixed to the end surface of the push rod 16;

[0060] A head 17 is provided at the other end of the push rod 16 away from the spring, and a sensor for detecting the pressure of the impact concrete test block is installed in the head 17. Through holes cooperating with the push rod 16 and the head 17 are provided on the fixed plate 10 and the mounting frame 9.

[0061] The clamping mechanism includes a hydraulic cylinder 22 arranged on the left side of the upper end of the mounting frame 9. A base plate 23 is arranged after the working end of the hydraulic cylinder 22 passes downward through the mounting frame 9. A pressing plate 24 cooperating with the concrete test block in the mounting groove 5 is arranged on the lower side of the base plate 23. The pressing plate 24 can press the concrete test block.

[0062] A guide device is arranged between the mounting frame 9 and the base plate 23 , and the guide device comprises a cylinder arranged on the mounting frame 9 , a column is slidably arranged in the cylinder, and a free end of the column is arranged on the base plate 23 .

[0063] The right side of the upper end of the mounting frame 9 is also provided with a pressing device for use with a concrete test block. The pressing device includes a round rod 25 that passes through the mounting frame 9 and slides with the mounting frame. The upper side of the outer periphery of the round rod 25 is provided with a thread. The lower end of the round rod 25 is provided with a base plate 26. The lower surface of the base plate 26 is provided with a pressing plate 27 that cooperates with the concrete test block in the mounting groove 5. The round rod 25 passes through the upper periphery of the mounting frame 9 and is provided with a matching nut. The outer periphery of the round rod 25 is provided with a spring 2. One end of the spring 2 is fixed on the mounting frame 9, and the other end of the spring 2 is fixed on the base plate 26. When the impact cylinder 12 pushes against the concrete, the pressing device can avoid overturning the concrete test block. When the pressing device needs to work, the nut is removed, and the pressing plate 27 will be pressed on the corresponding concrete test block under the action of the spring 2. When the pressing device is not needed to work, the pressing plate 27 is manually lifted, and the round rod 25 is locked by the nut, so that the pressing plate 27 is separated from the concrete test block in the mounting groove 5.

[0064] An anti-skid fixing device is arranged on the left side of the work surface 1, and the anti-skid fixing device includes a threaded hole arranged on the side of the work surface 1, and a matching long bolt 21 is arranged in the threaded hole, and a rotating sleeve 20 is arranged on the outer periphery of the long bolt 21 for rotation, and a pad 18 is arranged on the rotating sleeve 20, and the lower side of the pad 18 slides against the work surface 1, and an anti-skid plate 19 is arranged on the pad 18, and a rubber pad is arranged on the outer side of the anti-skid plate 19 facing the turntable 4. When the long bolt 21 is rotated, the rubber pad will approach the turntable 4 until it is against the outer side of the turntable 4. At this time, the pad 18 will be inserted into the gap between the turntable 4 and the work surface 1, so that the turntable 4 can be prevented from rotating during detection.

[0065] Mounting holes 1 are provided on both side surfaces of the mounting groove 5, and clamping plates 8 are slidably provided in the mounting holes 1 on both sides. A plurality of springs 3 7 are provided between the clamping plates 8 and the inner bottom surfaces of the corresponding mounting holes 1, one end of the spring 3 7 is provided on the clamping plates 8, and the other end of the spring 3 is provided on the inner bottom surface of the mounting hole 1. The clamping plates 8 on both sides can clamp and fix the well-proportioned concrete test block placed in the mounting groove 5.

[0066] A motor 2 is arranged just below the center of the work surface 1. After the output shaft of the motor 2 passes through the work surface 1 upward, a turntable 4 is arranged on the periphery. Specifically, a mounting hole 6 is arranged at the center of the work surface 1 for mounting the output shaft of the motor 2.

[0067] A plurality of supporting legs 3 are arranged on the lower side of the work surface 1, and universal wheels are arranged on the supporting legs 3 to facilitate the movement of the device.

[0068] Working principle: During operation, the concrete test block is placed in the installation groove 5 and clamped by two clamping plates 8. Then when the concrete test block rotates to the left, the hydraulic cylinder 22 works, and the pressure plate 24 presses down the concrete test block to detect anti-cracking. When the concrete test block moves to the impact cylinder 12 on the right side, an impact test is carried out to detect the anti-cracking performance.

[0069] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A concrete crack resistance detection device, characterized in that: The invention comprises a work surface (1), wherein a circular turntable (4) is arranged on the work surface (1), and a plurality of mounting grooves (5) distributed along the circumference are arranged on the turntable (4), wherein the mounting grooves (5) pass through the outer arc surface of the turntable (4), and a concrete test block is placed in the mounting grooves (5); A U-shaped mounting frame (9) is provided on the work surface (1), and an impact mechanism and a pressing mechanism used in conjunction with the concrete test block are provided on the mounting frame (9).

2. The concrete anti-cracking detection device according to claim 1, characterized in that: The clamping mechanism comprises a hydraulic cylinder (22) arranged on the left side of the upper end of the mounting frame (9), a base plate (23) is arranged after the working end of the hydraulic cylinder (22) passes downward through the mounting frame (9), a pressing plate (24) is arranged on the lower side of the base plate (23) to cooperate with the concrete test block in the mounting groove (5), and the pressing plate (24) can press the concrete test block; A guiding device is provided between the mounting frame (9) and the base plate (23).

3. The concrete anti-cracking detection device according to claim 1, characterized in that: The impact mechanism comprises a fixed plate (10) arranged on the right side of the mounting frame (9), an impact cylinder (12) is arranged on the fixed plate (10), an electric push rod (13) is arranged on the bottom surface of the inner side of the impact cylinder (12) away from the fixed plate (10), a top block (14) is arranged at the free end of the electric push rod (13), a sleeve (15) is arranged in the middle part of the inner side of the impact cylinder (12) through a bracket, the top block (14) is slidably arranged in the sleeve (15), a push rod (16) is slidably arranged inside the sleeve (15), a spring (1) is arranged between the push rod (16) and the top block (14), one end of the spring (1) is fixed to the end surface of the top block (14), and the other end of the spring (1) is fixed to the end surface of the push rod (16); The other end of the push rod (16) away from the spring is provided with a push head (17), a sensor for detecting the pressure of the impact on the concrete test block is installed in the push head (17), and through holes matching with the push rod (16) and the push head (17) are provided on the fixed plate (10) and the mounting frame (9).

4. The concrete anti-cracking detection device according to claim 1, characterized in that: Mounting holes (1) are provided on both side surfaces of the mounting groove (5), clamping plates (8) are slidably provided in the mounting holes (1) on both sides, a plurality of springs (7) are provided between the clamping plates (8) and the corresponding inner bottom surfaces of the mounting holes (1), one end of the springs (7) is provided on the clamping plates (8), and the other end of the springs (7) is provided on the inner bottom surface of the mounting hole (1).

5. The concrete anti-cracking detection device according to claim 1, characterized in that: The right side of the upper end of the mounting frame (9) is also provided with a pressing device for use with the concrete test block, the pressing device comprising a round rod (25) penetrating the mounting frame (9) and slidingly cooperating with the mounting frame, the upper side of the outer periphery of the round rod (25) being provided with a thread, the lower end of the round rod (25) being provided with a base plate (26), the lower side surface of the base plate (26) being provided with a pressing plate (27) cooperating with the concrete test block in the mounting groove (5), the outer periphery of the upper side of the round rod (25) passing through the mounting frame (9) being provided with a matching nut, the outer periphery of the round rod (25) being provided with a spring (2), one end of the spring (2) being fixed to the mounting frame (9), and the other end of the spring (2) being fixed to the base plate (26).

6. The concrete anti-cracking detection device according to claim 1, characterized in that: An anti-skid fixing device is arranged on the left side of the work surface (1), and the anti-skid fixing device comprises a threaded hole arranged on the side of the work surface (1), a matching long bolt (21) is arranged in the threaded hole, a rotating sleeve (20) is rotatably arranged on the periphery of the long bolt (21), a pad (18) is arranged on the rotating sleeve (20), the lower side of the pad (18) slides against the work surface (1), an anti-skid plate (19) is arranged on the pad (18), and a rubber pad is arranged on the outer side of the anti-skid plate (19) facing the turntable (4).

7. The concrete anti-cracking detection device according to claim 1, characterized in that: A motor (2) is arranged directly below the center of the work surface (1), and the turntable (4) is arranged on the periphery of an output shaft of the motor (2) that passes through the work surface (1) upward.

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