Concrete durability test device

Abstract

The utility model relates to the technical field of concrete testing, in particular to a concrete durability testing device which comprises a base, a left side plate is fixedly connected to the left portion of the upper end of the base, a right side plate is fixedly connected to the right portion of the upper end of the base, and two connecting plates are jointly and fixedly connected between the left side plate and the right side plate. The left portion and the right portion of the upper end of each connecting plate are provided with vertically-through sliding grooves, a control device is installed at the left end of the left side plate in a penetrating mode, a vertical plate is fixedly connected to the middle of the rear end of the base, a top plate is fixedly connected to the upper portion of the front end of the vertical plate, and a test assembly is installed at the front portion of the upper end of the top plate in a penetrating mode. According to the concrete durability test device disclosed by the utility model, the rotating motor in the control device drives the left ball screw and the right ball screw to rotate, and a concrete test piece is clamped through the clamping assembly in threaded connection, so that the test piece is kept at a correct position in a test process.

Description

Technical Field

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

[0002] Concrete is a composite material composed of gel material, aggregate, and water in appropriate proportions, which hardens over a period of time. It is the world's most widely used artificial civil construction material. Before construction, concrete durability must be tested using a durability test device. However, existing concrete durability test devices still have the following disadvantages: the existing concrete durability test device has a fixed structure, and during concrete testing, the concrete is prone to positional displacement, which affects the test work. Therefore, we have launched a concrete durability test device. Utility Model Content

[0003] The main purpose of the utility model is to provide a concrete durability testing device, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A concrete durability test device comprises a base, wherein the left portion of the upper end of the base is fixedly connected to a left plate, the right portion of the upper end of the base is fixedly connected to a right plate, two connecting plates are fixedly connected between the left plate and the right plate, the upper left portion and the upper right portion of the two connecting plates are provided with a sliding groove passing through up and down, a control device is installed through the left end of the left plate, a vertical plate is fixedly connected to the middle portion of the rear end of the base, the upper front end of the vertical plate is fixedly connected to a top plate, and a test assembly is installed through the front end of the top plate;

[0006] The control device includes a rotating motor, a left ball screw is fixedly installed at the output end of the rotating motor, the right end of the left ball screw is fixedly connected to a fixing rod, the right end of the fixing rod is fixedly connected to the right ball screw, the outer surfaces of the left ball screw and the outer surfaces of the right ball screw are both threadedly connected to a clamping assembly, the right end of the rotating motor is fixedly connected to the left end of the left plate, and the output end of the rotating motor passes through the left end of the left plate and extends to the right end of the left plate.

[0007] Preferably, the left ball screw and the right ball screw are distributed in left and right mirror images, and the right end of the right ball screw is movably connected to the left end of the right plate through a bearing.

[0008] By adopting the above technical solution, the mirror-image-distributed lead screws on the left and right sides can make the clamping force applied to the concrete specimen more evenly balanced when working, avoiding unstable or tilting clamping of the specimen due to uneven force on one side, thereby improving the accuracy and reliability of the test.

[0009] Preferably, the clamping assembly includes a ball screw block, the upper and lower ends of the ball screw block are fixedly connected to sliders, the outer sides of the two sliders are fixedly connected to limit blocks, the front end of the ball screw block is fixedly connected to a support plate, the front end of the support plate is fixedly connected to a splint, and the left end of the splint is provided with several anti-slip grooves passing through the left and right, and the inner wall surface of the ball screw block on the left is threadedly connected to the outer surface of the left ball screw.

[0010] By adopting the above technical solution: the threaded connection between the ball screw block and the lead screw, precise linear motion can be achieved, ensuring the accuracy and stability of the clamping position of the splint on the concrete specimen.

[0011] Preferably, the two sliding blocks are movably sleeved in corresponding sliding grooves respectively, and the plurality of anti-slip grooves are distributed at equal distances in pairs.

[0012] By adopting the above technical solution: the sliders at the upper and lower ends of the ball screw block move in the slide groove, providing a good guide for the clamping action, making the clamping process smoother and reducing shaking and deviation.

[0013] Preferably, the test assembly includes a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly mounted with a flange, the lower end of the flange is fixedly connected to a pressure sensor, and the lower end of the pressure sensor is fixedly connected to a pressure plate.

[0014] By adopting the above technical solution: the setting of the pressure sensor can monitor the pressure value applied to the concrete specimen in real time and accurately, providing key data for evaluating the durability of concrete.

[0015] Preferably, the lower end of the hydraulic cylinder is fixedly connected to the upper end of the top plate, and the output end of the hydraulic cylinder passes through the upper end of the top plate and extends to the lower end of the top plate.

[0016] By adopting the above technical solution: the lower end of the hydraulic cylinder is fixedly connected to the upper end of the top plate, providing a stable support foundation for the hydraulic cylinder, ensuring that the hydraulic cylinder itself will not shake or displace during the force application process, thereby ensuring the stability and accuracy of pressure application.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the rotary motor in the control device drives the left and right ball screws to rotate, and the concrete specimen is clamped by a threaded clamping assembly. The left and right ball screws, which are mirror-imaged, and the clamping assembly that cooperates with the left and right ball screws can provide uniform and stable clamping force, ensuring that the specimen maintains the correct position during the test without being disturbed by external forces. The sliders at the upper and lower ends of the ball screw block slide in the slide groove, providing precise guidance for the clamping action, making the clamping process more stable and accurate. The anti-slip groove on the clamping plate increases the friction with the specimen, effectively preventing the specimen from sliding during the clamping process, and improving the reliability of the clamping.

[0019] 2. In the present invention, the hydraulic cylinder in the test assembly can provide precise and controllable pressure output. Through the coordinated action of the flange, pressure sensor and pressure plate, pressure is accurately applied to the concrete specimen, and the pressure is monitored in real time. The pressure sensor can accurately measure the applied pressure value, providing accurate data support for evaluating the durability of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a concrete durability testing device of the present utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of a control device for a concrete durability testing device of the present utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of a clamping assembly of a concrete durability testing device of the present utility model;

[0023] Figure 4 The utility model is a schematic diagram of the overall structure of the test assembly of a concrete durability test device.

[0024] In the figure: 1. Base; 2. Left panel; 3. Right panel; 4. Connecting plate; 5. Slide groove; 6. Control device; 7. Vertical plate; 8. Top plate; 9. Test assembly; 61. Rotating motor; 62. Left ball screw; 63. Fixed rod; 64. Right ball screw; 65. Clamping assembly; 651. Ball screw block; 652. Slider; 653. Limit block; 654. Support plate; 655. Clamp; 656. Anti-slip groove; 91. Hydraulic cylinder; 92. Flange; 93. Pressure sensor; 94. Pressure plate. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] A concrete durability testing device includes a base 1, a left plate 2 is fixedly connected to the left upper end of the base 1, a right plate 3 is fixedly connected to the right upper end of the base 1, two connecting plates 4 are fixedly connected between the left plate 2 and the right plate 3, and the upper left and right upper ends of the two connecting plates 4 are provided with a slide groove 5 passing through up and down, a control device 6 is installed through the left end of the left plate 2, a vertical plate 7 is fixedly connected to the middle of the rear end of the base 1, a top plate 8 is fixedly connected to the upper front end of the vertical plate 7, and a test component 9 is installed through the front upper end of the top plate 8.

[0030] In this embodiment, the control device 6 includes a rotating motor 61, and a left ball screw 62 is fixedly installed at the output end of the rotating motor 61. The right end of the left ball screw 62 is fixedly connected to a fixing rod 63, and the right end of the fixing rod 63 is fixedly connected to a right ball screw 64. The outer surfaces of the left ball screw 62 and the outer surfaces of the right ball screw 64 are both threadedly connected to a clamping assembly 65. The right end of the rotating motor 61 is fixedly connected to the left end of the left plate 2, and the output end of the rotating motor 61 passes through the left end of the left plate 2 and extends to the right end of the left plate 2; the left ball screw 62 and the right ball screw 64 are distributed in left and right mirror images, and the right end of the right ball screw 64 is connected to the left plate 2 through a bearing. The left end of the right plate 3 is movably connected; the clamping assembly 65 includes a ball screw block 651, the upper and lower ends of the ball screw block 651 are fixedly connected to sliders 652, the outer sides of the two sliders 652 are fixedly connected to the limit blocks 653, the front end of the ball screw block 651 is fixedly connected to the support plate 654, the front end of the support plate 654 is fixedly connected to the splint 655, and the left end of the splint 655 is provided with several anti-slip grooves 656 that pass through the left and right sides. The inner wall surface of the left ball screw block 651 is threadedly connected to the outer surface of the left ball screw 62; the two sliders 652 are respectively movably sleeved in the corresponding slide grooves 5, and the several anti-slip grooves 656 are distributed at equal distances in pairs.

[0031] Through the above scheme: start the rotating motor 61, the output end of the rotating motor 61 starts to rotate, driving the left ball screw 62 fixed to it to rotate. Since the left ball screw 62 is connected to the right ball screw 64 through the fixed rod 63, the right ball screw 64 will rotate synchronously with the left ball screw 62. The rotation of the left ball screw 62 and the right ball screw 64 will prompt the ball screw block 651 threadedly connected to them to move. Because the left ball screw 62 and the right ball screw 64 are distributed in left and right mirror images, when the rotating motor 61 rotates forward, the two ball screw blocks 651 will move toward each other. When the rotating motor 61 rotates reversely, the two ball screw blocks 651 will move away from each other. When the ball screw block 651 moves, the support plate 654 and the clamping plate 655 fixed to its front end also move accordingly. The clamping plate 655 approaches the specimen until it contacts and clamps the specimen.

[0032] In this embodiment, the test assembly 9 includes a hydraulic cylinder 91, the output end of the hydraulic cylinder 91 is fixedly installed with a flange 92, the lower end of the flange 92 is fixedly connected to a pressure sensor 93, and the lower end of the pressure sensor 93 is fixedly connected to a pressure plate 94; the lower end of the hydraulic cylinder 91 is fixedly connected to the upper end of the top plate 8, and the output end of the hydraulic cylinder 91 passes through the upper end of the top plate 8 and extends to the lower end of the top plate 8.

[0033] Through the above scheme: when the durability test is carried out on the concrete specimen, after the specimen is clamped and fixed by the clamping assembly 65, the hydraulic cylinder 91 in the test assembly 9 is started, the hydraulic cylinder 91 starts to work, and its output end extends outward. Since the output end of the hydraulic cylinder 91 is fixedly installed with the flange 92, the extending action will drive the flange 92 to move downward, and the pressure sensor 93 fixedly connected to the lower end of the flange 92 and the pressure plate 94 fixedly connected to the lower end of the flange 92 also move downward together. When the pressure plate 94 contacts the clamped concrete specimen, the hydraulic cylinder 91 continues to push the output end, so that the pressure plate 94 applies pressure to the specimen.

[0034] It should be noted that the present invention is a concrete durability test device. During use, first, the concrete specimen to be tested is placed on the base 1, located between the two clamping assemblies 65, and the rotating motor 61 in the control device 6 is started. The output end of the rotating motor 61 drives the left ball screw 62 to rotate. Since the left ball screw 62 is fixedly connected to the right ball screw 64 through the fixing rod 63, the rotation of the left ball screw 62 will simultaneously drive the right ball screw 64 to rotate synchronously. The ball screw block 651 in the clamping assembly 65 threadedly connected to the left ball screw 62 and the right ball screw 64 will produce relative or opposite movement according to the rotation direction of the left ball screw 62 and the right ball screw 64. The sliders 652 at the upper and lower ends of the ball screw block 651 are movably sleeved in the slide groove 5 of the connecting plate 4. This makes the ball screw block 651 move only along the axial direction of the left ball screw 62 and the right ball screw 64. When the ball screw block 651 moves, it drives the support plate 654 and the clamping plate 655 to move closer to the concrete specimen until the specimen is clamped. The anti-slip groove 656 at the left end of the clamping plate 655 can increase the friction with the specimen and improve the stability of the clamping. After the specimen is clamped, the hydraulic cylinder 91 in the test assembly 9 is started, and the output end of the hydraulic cylinder 91 extends to push the flange 92, the pressure sensor 93 and the pressure plate 94 downward. When the pressure plate 94 contacts the specimen, it continues to apply pressure, and the pressure sensor 93 monitors the applied pressure in real time. Through such a work process, the concrete specimen can be subjected to a durability pressure test to evaluate its performance and durability under specific pressure conditions.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A concrete durability testing device, comprising a base (1), characterized in that: The left upper end of the base (1) is fixedly connected to a left panel (2), the right upper end of the base (1) is fixedly connected to a right panel (3), two connecting panels (4) are fixedly connected between the left panel (2) and the right upper end (3), and the upper left and right upper ends of the two connecting panels (4) are provided with a sliding groove (5) passing through the upper and lower parts. A control device (6) is inserted and installed at the left end of the left panel (2), a vertical panel (7) is fixedly connected to the middle of the rear end of the base (1), a top panel (8) is fixedly connected to the upper front end of the vertical panel (7), and a test assembly (9) is inserted and installed at the front end of the top panel (8); The control device (6) includes a rotating motor (61), an output end of the rotating motor (61) is fixedly mounted with a left ball screw (62), a right end of the left ball screw (62) is fixedly connected to a fixing rod (63), a right end of the fixing rod (63) is fixedly connected to a right ball screw (64), an outer surface of the left ball screw (62) and an outer surface of the right ball screw (64) are both threadedly connected to a clamping assembly (65), the right end of the rotating motor (61) is fixedly connected to the left end of the left plate (2), and the output end of the rotating motor (61) passes through the left end of the left plate (2) and extends to the right end of the left plate (2).

2. A concrete durability testing device according to claim 1, characterized in that: The left ball screw (62) and the right ball screw (64) are distributed in a left-right mirror image manner, and the right end of the right ball screw (64) is movably connected to the left end of the right plate (3) via a bearing.

3. A concrete durability testing device according to claim 1, characterized in that: The clamping assembly (65) includes a ball screw block (651), the upper and lower ends of the ball screw block (651) are fixedly connected to sliders (652), the outer side surfaces of the two sliders (652) are fixedly connected to limit blocks (653), the front end of the ball screw block (651) is fixedly connected to a support plate (654), the front end of the support plate (654) is fixedly connected to a clamping plate (655), the left end of the clamping plate (655) is provided with a plurality of anti-slip grooves (656) passing through the left and right sides, and the inner wall surface of the left ball screw block (651) is threadedly connected to the outer surface of the left ball screw (62).

4. A concrete durability testing device according to claim 3, characterized in that: The two sliding blocks (652) are movably sleeved in the corresponding sliding grooves (5), and the plurality of anti-slip grooves (656) are distributed at equal distances in pairs.

5. The concrete durability testing device according to claim 1, characterized in that: The test assembly (9) includes a hydraulic cylinder (91), the output end of the hydraulic cylinder (91) is fixedly mounted with a flange (92), the lower end of the flange (92) is fixedly connected to a pressure sensor (93), and the lower end of the pressure sensor (93) is fixedly connected to a pressure plate (94).

6. A concrete durability testing device according to claim 5, characterized in that: The lower end of the hydraulic cylinder (91) is fixedly connected to the upper end of the top plate (8), and the output end of the hydraulic cylinder (91) passes through the upper end of the top plate (8) and extends to the lower end of the top plate (8).

Images