Concrete impact resistance testing device

Abstract

The utility model relates to the technical field of concrete, and discloses a concrete impact resistance testing device which comprises a testing box, the top of the testing box is fixedly connected with a fixing frame, the front side of the top of the fixing frame is provided with a driving assembly, and the interior of the fixing frame is slidably connected with two sliding columns. The two sliding columns are sleeved with first springs correspondingly, two fixing rings are fixedly connected to the top side of the interior of the fixing frame, first limiting discs are fixedly connected to the tops of the two sliding columns correspondingly, and fixing discs are fixedly connected to the bottoms of the two sliding columns correspondingly. According to the device, the air cylinder drives the push rod and the connecting frame to displace, at the moment, the impact hammer can be driven to displace, the pull plate is pulled to drive the clamping plate to displace, and then the first limiting plate slides in the clamping groove and can fall down; at the moment, the impact force can be adjusted by adjusting the height of the impact hammer and utilizing gravity.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, in particular to a concrete impact resistance test device. Background Art

[0002] The concrete impact resistance test device is a device used to test the damage form, damage capacity and stress-strain response of concrete materials when subjected to impact loads. The reasons for testing the concrete impact resistance include safety requirements, quality assessment, scientific research development and performance optimization. The concrete impact resistance test device and its corresponding test methods play an irreplaceable role in ensuring building safety, improving material performance and meeting regulatory requirements. Through these tests, the performance of concrete can be fully evaluated before actual application, so as to make more reasonable decisions in the design and construction stages. This not only affects the safety and durability of the building, but also affects the economy of the material and the foresight of scientific research.

[0003] After searching, the Chinese patent document announcement number is: CN212964437U. The utility model discloses a concrete impact resistance test device, which belongs to the field of concrete technology, including a base, a universal wheel is rotatably connected at the bottom of the base, and an electric telescopic rod is fixedly connected to the bottom of the base near the outer end of the universal wheel. In the utility model, the second top groove of the base is provided with a plurality of protrusions, and the bottom of the tray is provided with a plurality of grooves, and the grooves at the bottom of the tray and the second top convex grooves of the base are matched. When the staff needs to perform a concrete strength test, the tray is placed in the second top groove of the base, and the grooves at the bottom of the tray and the second top convex grooves of the base are matched, and then the concrete is placed on the tray. The staff then lowers the hydraulic rod to make the pressure plate perform a strength test on the concrete on the tray. After the grooves at the bottom of the tray and the second top convex grooves of the base are matched, the pressure plate will not displace the tray when performing a strength test on the concrete, so that the pressure plate can better perform a strength test on the concrete and achieve a better fixing effect.

[0004] Although the above patent mentioned in the specification that "by placing the pallet in the groove at the top of the second base, so that the groove at the bottom of the pallet fits with the convex groove at the top of the second base, placing the concrete on the pallet, the staff then lowers the hydraulic rod to make the pressure plate perform a strength test on the concrete on the pallet. After the groove at the bottom of the pallet and the convex groove at the top of the second base fit, the pressure plate will not displace the pallet when performing the strength test on the concrete, so that the pressure plate can better perform the strength test on the concrete and achieve a better fixing effect", but the impact force test through the hydraulic rod will cause a force to act on the hydraulic rod at the moment of contact, resulting in a reduction in the service life of the hydraulic rod. Therefore, in view of the above shortcomings, a concrete impact resistance testing device is proposed. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a concrete impact resistance test device, aiming to improve the problem that some concrete impact resistance test devices in the prior art cannot adjust different impact forces.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The top of the two wheels are fixedly connected to the driving mechanism, and the driving mechanism is installed in the driving mechanism so that the two wheels can be driven by the driving mechanism.

[0008] Furthermore, the driving assembly includes a fixing frame, the bottom of which is fixedly connected to the top of the fixing frame, a cylinder is installed at the bottom of the fixing frame, and a push rod is fixedly connected to the driving end of the cylinder.

[0009] Furthermore, the front side of the test box is rotatably connected to two protective doors, the rear sides of the two protective doors are rotatably connected to a rotating rod, the interior of the test box is slidably connected to two clamping plates, one of the clamping plates has two sliding grooves arranged inside, the interiors of the two sliding grooves are slidably connected to two limiting plates, the rear side of the other clamping plate is fixedly connected to two sliding shafts, the exteriors of the two sliding shafts are both sleeved with two springs, the rear sides of the two sliding shafts are fixedly connected to two limiting plates, and a damper is fixedly connected to the rear side of the interior of the test box.

[0010] Furthermore, a load-bearing plate is fixedly connected to the inner bottom side of the test box, a pressure sensor is fixedly connected to the inner side of the load-bearing plate, handles are fixedly connected to the front sides of the two protective doors, and observation windows are fixedly connected to the left and right sides of the outer side of the test box.

[0011] Furthermore, one end of the spring 1 is fixedly connected to the bottom of the fixing ring, and the other end of the spring 1 is fixedly connected to the top of the clamping plate.

[0012] Furthermore, the bottom of the fixing plate is slidably connected to the top of the clamping plate, and the outside of the impact hammer is slidably connected to the top of the test box.

[0013] Furthermore, the outside of the first limiting plate is slidably connected to the inside of the slot, and the rear side of the rotating rod is rotatably connected to the front side of the second limiting plate.

[0014] Furthermore, the outer portion of the sliding shaft is slidably connected to the inner rear side of the test box, and the bottom of the clamping plate is slidably connected to the top of the bearing plate.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, the push rod and the connecting frame are driven to move by the cylinder, and then the position of the clamping plate can be adjusted, at which time the impact hammer can be driven to move, and the spring can be compressed, and then the pull plate can be pulled to drive the clamping plate to move, and then the limit plate can be made to slide inside the clamping slot, so that it can fall down, and at this time, the impact force can be adjusted by adjusting the height of the impact hammer and utilizing gravity.

[0017] In the utility model, the displacement of the clamping plate can be achieved by opening and closing the protective door, so that the concrete block to be tested can be clamped and fixed, without the need for an additional driving source to clamp the concrete block, and the compression and rebound of the spring 2 can make the clamping more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a concrete impact resistance test device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a fixed frame of a concrete impact resistance test device proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the connecting rod structure of a concrete impact resistance test device proposed by the utility model;

[0021] Figure 4 A schematic diagram of the internal structure of a test box of a concrete impact resistance test device proposed by the utility model;

[0022] Figure 5 A schematic diagram of the structure of a clamping plate of a concrete impact resistance test device proposed by the utility model;

[0023] Figure 6 The utility model provides a schematic diagram of the internal structure of a load-bearing plate of a concrete impact resistance testing device.

[0024] Legend:

[0025] 1. Test box; 2. Fixed frame; 3. Fixed frame; 4. Cylinder; 5. Push rod; 6. Connecting frame; 7. Sliding column; 8. Spring 1; 9. Fixed ring; 10. Limit plate 1; 11. Clamping plate; 12. Clamping slot; 13. Limit plate 1; 14. Connecting rod; 15. Impact hammer; 16. Pull plate; 17. Protective door; 18. Rotating rod; 19. Clamping plate; 20. Sliding slot; 21. Limit plate 2; 22. Sliding shaft; 23. Spring 2; 24. Limit plate 2; 25. Damper; 26. Loading plate; 27. Pressure sensor; 28. Handle; 29. ​​Observation window; 30. Fixed plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 - Figure 3 , the utility model provides an embodiment: a concrete impact resistance test device, including a test box 1, the test box 1 is used to accommodate concrete samples to be tested, the top of the test box 1 is fixedly connected with a fixed frame 2, the top front side of the fixed frame 2 is provided with a driving assembly, the fixed frame 2 is used to support and fix the driving assembly, the driving assembly includes a fixed frame 3, the bottom of the fixed frame 3 is fixedly connected to the top of the fixed frame 2, the fixed frame 3 serves as a supporting structure of the driving assembly, a cylinder 4 is installed at the bottom of the fixed frame 3, the cylinder 4 is used to provide necessary displacement, the driving end of the cylinder 4 is fixedly connected with a push rod 5, the internal sliding connection of the fixed frame 2 is connected with two sliding columns 7, the sliding column 7 slides inside the fixed frame 2, allowing a certain range of motion to adapt to different height adjustments, the outside of the two sliding columns 7 are both sleeved with a spring 8, one end of the spring 8 is fixedly connected to the bottom of the fixing ring 9, and the other end of the spring 8 is fixedly connected to the top of the clamping plate 11, and the spring 8 provides a buffering effect to adapt to height adjustment and improve the adjustment accuracy while maintaining the stability of the structure;

[0028] Reference Figure 1 - Figure 3The top side of the fixed frame 2 is fixedly connected to two fixing rings 9, the tops of the two sliding columns 7 are fixedly connected to a limit plate 10, and the limit plate 10 is used to limit the movement range of the sliding column 7 to prevent it from escaping from the fixed frame 2. The bottoms of the two sliding columns 7 are fixedly connected to a fixing plate 30, and the bottom of the fixing plate 30 is slidably connected to the top of the card plate 11. The bottom of the driving component is fixedly connected to a connecting frame 6. Here, the card plate 11 and the push rod 5 are connected by the connecting frame 6. The rear side of the connecting frame 6 is slidably connected to the card plate 11, and a card slot 12 is provided inside the card plate 11. The inner sliding groove 12 is provided inside the card slot 12. There is a limit plate 13 in dynamic connection, and the outer part of the limit plate 13 is slidably connected to the inside of the slot 12. The slot 12 is designed here as a sliding space for the card plate 11, and the card plate 11 can fall out on the right side of the slot 12. The bottom of the limit plate 13 is fixedly connected with a connecting rod 14, and the bottom of the connecting rod 14 is fixedly connected with an impact hammer 15. It is designed here to realize the impact on the concrete by the free fall of the impact hammer 15. The outer part of the impact hammer 15 is slidably connected to the top of the test box 1, and the left side of the card plate 11 is fixedly connected with a pull plate 16. It is designed here to displace the card plate 11 by pulling the pull plate 16.

[0029] Reference Figure 4 - Figure 5 , the front side of the test box 1 is rotatably connected to two protective doors 17, the protective doors 17 are used to protect the specimens and components in the test box 1 from external influences, the rear sides of the two protective doors 17 are rotatably connected to a rotating rod 18, and it is designed here that the rotating rod 18 can be displaced and rotated by the displacement of the protective door 17, and the interior of the test box 1 is slidably connected to two clamping plates 19, the clamping plates 19 are used to fix and position the concrete specimens to ensure that the specimens will not shift when impacted, one of the clamping plates 19 has two sliding grooves 20 arranged inside, the interiors of the two sliding grooves 20 are both slidably connected to a limiting plate 21, the rear side of the rotating rod 18 is rotatably connected to the front side of the limiting plate 21, and the rear side of the other clamping plate 19 is fixedly connected to two sliding shafts 22, the outer side of the sliding shaft 22 is slidably connected to the inner rear side of the test box 1, and the outer sides of the two sliding shafts 22 are both sleeved with springs 23, which provide additional buffering effect and help reduce damage to the specimens during the clamping process;

[0030] Reference Figure 4 - Figure 6The rear sides of the two sliding shafts 22 are fixedly connected with the limit plate 24, and the internal rear side of the test box 1 is fixedly connected with a damper 25. The damper 25 is used to reduce the vibration generated during the test and protect the structural integrity of the test box 1. The bottom side of the interior of the test box 1 is fixedly connected with a load-bearing plate 26. The bottom of the clamping plate 19 is slidably connected to the top of the load-bearing plate 26. The inside of the load-bearing plate 26 is fixedly connected with a pressure sensor 27. The pressure sensor 27 is used to detect the pressure exerted on the sample during the test and provide test data. The front sides of the two protective doors 17 are fixedly connected with handles 28. The left and right sides of the exterior of the test box 1 are fixedly connected with observation windows 29. The observation window 29 allows the status of the sample to be observed during the test, and monitoring can be performed without opening the protective door 17.

[0031] Working principle: When the concrete needs to be tested for impact resistance, the protective door 17 can be opened first, which can drive the rotating rod 18 to rotate. At this time, the sliding of the limit plate 21 can be driven by the rotating rod 18 to cause the clamping plate 19 to be displaced, so that the concrete block can be placed on the top of the bearing plate 26. At this time, the protective door 17 can be closed. The closing of the protective door 17 can again cause the clamping plate 19 to be displaced, so that it can contact the concrete block and be compressed by the spring 23, so that the clamping plate 19 can clamp the concrete block more stably, and then the cylinder 4 can be used to drive the push rod 5 to fire. The card plate 11 is displaced, and the height of the connecting frame 6 and the card plate 11 can be adjusted. At this time, the spring 8 will be compressed, and the elastic force of the spring 8 can be used to make the displacement of the card plate 11 more accurate and stable. Then, when the card plate 11 moves to the specified position, the pull plate 16 can be pulled to displace the card plate 11, and the connecting rod 14 can slide inside the card plate 11. Then, when the limit plate 13 slides to the right side of the slot 12, the impact hammer 15 will fall down, and the impact hammer 15 can fall down to impact the concrete block. At this time, the impact force value can be recorded with the help of the pressure sensor 27.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete impact resistance test device, comprising a test box (1), characterized in that: The top of the test box (1) is fixedly connected to a fixed frame (2), the top front side of the fixed frame (2) is provided with a driving assembly, the interior of the fixed frame (2) is slidably connected to two sliding columns (7), the exteriors of the two sliding columns (7) are sleeved with springs (8), the interior top side of the fixed frame (2) is fixedly connected to two fixing rings (9), the tops of the two sliding columns (7) are fixedly connected to a limiting plate (10), the bottoms of the two sliding columns (7) are fixedly connected to a fixing plate (30), the bottom of the driving assembly is fixedly connected to a connecting frame (6), the rear side of the connecting frame (6) is slidably connected to a card plate (11), a card slot (12) is provided inside the card plate (11), the interior of the card slot (12) is slidably connected to a limiting plate (13), the bottom of the limiting plate (13) is fixedly connected to a connecting rod (14), the bottom of the connecting rod (14) is fixedly connected to an impact hammer (15), and the left side of the card plate (11) is fixedly connected to a pull plate (16).

2. A concrete impact resistance test device according to claim 1, characterized in that: The driving assembly comprises a fixing frame (3), the bottom of the fixing frame (3) being fixedly connected to the top of the fixing frame (2), a cylinder (4) being installed at the bottom of the fixing frame (3), and a push rod (5) being fixedly connected to the driving end of the cylinder (4).

3. A concrete impact resistance testing device according to claim 1, characterized in that: The front side of the test box (1) is rotatably connected to two protective doors (17), and the rear sides of the two protective doors (17) are rotatably connected to a rotating rod (18). The interior of the test box (1) is slidably connected to two clamping plates (19), one of the clamping plates (19) has two sliding grooves (20) formed inside, and the interiors of the two sliding grooves (20) are slidably connected to a second limiting plate (21). The rear side of the other clamping plate (19) is fixedly connected to two sliding shafts (22), the exteriors of the two sliding shafts (22) are both sleeved with a second spring (23), and the rear sides of the two sliding shafts (22) are fixedly connected to a second limiting plate (24). The rear side of the interior of the test box (1) is fixedly connected to a damper (25).

4. A concrete impact resistance testing device according to claim 3, characterized in that: A load-bearing plate (26) is fixedly connected to the bottom side of the interior of the test box (1), a pressure sensor (27) is fixedly connected to the interior of the load-bearing plate (26), handles (28) are fixedly connected to the front sides of the two protective doors (17), and observation windows (29) are fixedly connected to the left and right sides of the exterior of the test box (1).

5. A concrete impact resistance testing device according to claim 1, characterized in that: One end of the spring one (8) is fixedly connected to the bottom of the fixing ring (9), and the other end of the spring one (8) is fixedly connected to the top of the clamping plate (11).

6. A concrete impact resistance testing device according to claim 1, characterized in that: The bottom of the fixing plate (30) is slidably connected to the top of the clamping plate (11), and the outside of the impact hammer (15) is slidably connected to the top of the test box (1).

7. A concrete impact resistance testing device according to claim 3, characterized in that: The outside of the first limiting plate (13) is slidably connected to the inside of the clamping slot (12), and the rear side of the rotating rod (18) is rotationally connected to the front side of the second limiting plate (21).

8. A concrete impact resistance testing device according to claim 4, characterized in that: The outside of the sliding shaft (22) is slidably connected to the inner rear side of the test box (1), and the bottom of the clamping plate (19) is slidably connected to the top of the bearing plate (26).

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