Concrete shrinkage test device

Abstract

The utility model discloses a concrete shrinkage test device, which relates to the technical field of concrete tests and comprises a test bed, a support frame is arranged at one end of the top of the test bed, a first electric telescopic rod is arranged at the top end of the support frame in a penetrating manner, the telescopic end of the first electric telescopic rod is connected with a frame, and a dial indicator is arranged at the inner bottom end of the frame in a penetrating manner. A fixing plate is arranged at the bottom of the test bed, an auxiliary assembly is arranged at the top end of the fixing plate, the top end of the auxiliary assembly penetrates through the inner top end of the test bed to be connected with a rotating plate, concrete fixing assemblies matched with the dial indicator are symmetrically arranged at the two ends of the top of the rotating plate, and a control panel is arranged on one side of the test bed. The concrete shrinkage test device is reasonable and reliable in structure and easy to operate, under the action of the concrete fixing assembly, the stability of a concrete sample in the test process is guaranteed, under the action of the auxiliary assembly, the test efficiency of the concrete shrinkage test device is improved, and the applicability is wider.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and more specifically, to a concrete shrinkage testing device. Background Technology

[0002] Concrete refers to cement concrete, also known as ordinary concrete, made by mixing cement as a binder, sand and gravel as aggregates, and water in a certain proportion. Concrete is an essential material in the construction and other industries. When exposed to changes in the natural environment, concrete shrinks. Concrete shrinkage refers to the reduction in volume that occurs during the initial setting or hardening process of concrete. Significant shrinkage can cause cracking, therefore, the shrinkage performance of concrete needs to be tested before it can be used. However, existing concrete shrinkage testing equipment requires workers to fix the concrete sample before conducting the shrinkage test, and then wait until the current sample's shrinkage test is completed before proceeding to the next sample. This results in low work efficiency and reduces the overall efficiency of concrete shrinkage testing.

[0003] For example, Chinese patent CN220552385U discloses a concrete shrinkage test device, including a placement plate, a vertical plate fixedly connected to the upper surface of the placement plate, a horizontal plate fixedly connected to the side of the vertical plate, a threaded hole on the upper surface of the horizontal plate, a first threaded rod threaded into the threaded hole, a connecting plate fixedly connected to the bottom end of the first threaded rod, two connecting rods fixedly connected to the lower surface of the connecting plate, a support plate fixedly connected to the bottom end of the two connecting rods, and a first dial indicator provided on the upper surface of the support plate.

[0004] This concrete shrinkage testing device has the following drawbacks: Although it can test and detect the shrinkage of concrete modules in both the lateral and longitudinal directions, resulting in better and more accurate testing, the process is inefficient. Workers must fix the concrete sample before conducting the shrinkage test, and then wait until the current sample's shrinkage test is completed before starting the next sample. This inefficiency reduces the overall efficiency of the concrete shrinkage test.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a concrete shrinkage test device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A concrete shrinkage testing device includes a test platform, a support frame at one top end of the test platform, an electric telescopic rod penetrating through the top of the support frame, a frame connected to the telescopic end of the electric telescopic rod, a dial indicator penetrating through the bottom inner end of the frame, a fixing plate at the bottom of the test platform, an auxiliary component at the top of the fixing plate, a rotating plate connected to the top of the auxiliary component penetrating through the top inner end of the test platform, concrete fixing components that cooperate with the dial indicator symmetrically arranged at both ends of the top of the rotating plate, and a control panel on one side of the test platform.

[0009] Furthermore, in order to drive the rotating plate under the action of the auxiliary components, thereby enabling the rotating plate to rotate 180 degrees under the drive of the servo motor, it is possible to simultaneously fix the concrete sample to be tested and perform shrinkage tests on the fixed concrete sample, thus improving the testing efficiency of the concrete shrinkage testing device and making it more applicable. The auxiliary components include a support plate set on the top of the fixed plate, a driving component set on one side of the support plate, and a rotating component set on one end of the driving component. The driving component includes a rotating component set on one end of the fixed plate. The servo motor of the wall has its output end connected to a drive disk through one side wall of the fixed plate. A number of drive columns are provided on one side wall of the drive disk. The rotating component includes a rotating column one set at the top of the fixed plate. A hollow turntable one is connected to the top of the rotating column one. A number of support columns one are provided in the middle of the hollow turntable one. A rotating rod is provided at the top of the hollow turntable one. A hollow turntable two is connected to the top of the rotating rod. A number of support columns two are provided in the middle of the hollow turntable two. Both support columns one and support columns two are matched with drive columns. A rotating column two is provided at the top of the hollow turntable two and connected to the bottom of the rotating plate.

[0010] Furthermore, in order to fix the concrete specimen to be tested and the concrete specimen currently being tested under the action of the concrete fixing component, thereby ensuring the stability of the concrete specimen during the test and improving the stability and accuracy of the concrete shrinkage test device, the concrete fixing component includes a placement plate set at the top of the rotating plate, an installation plate set on one side of the top of the placement plate, an electric telescopic rod II running through one side of the installation plate, an extrusion plate connected to the telescopic end of the electric telescopic rod II, limit sliders symmetrically set at both ends of the bottom of the extrusion plate, limit grooves that cooperate with the limit sliders symmetrically opened at both ends of the top of the placement plate, and L-shaped auxiliary rods symmetrically set on one side of the top of the placement plate. The L-shaped auxiliary rods are connected to the placement plate through connecting shafts. The cross-sections of the limit sliders and the limit grooves are both set in a trapezoidal shape.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model has a reasonable and reliable structure and is simple to operate. The concrete sample is placed in the concrete fixing component for fixation. The dial indicator is driven by an electric telescopic rod to contact the surface of the concrete sample and detect the shrinkage of the concrete sample. At the same time, the auxiliary component can drive the rotating plate to rotate 180 degrees under the drive of the servo motor. This allows the operator to fix the concrete sample to be tested and perform the shrinkage test on the fixed concrete sample at the same time. The concrete fixing component ensures the stability of the concrete sample during the test, and the auxiliary component improves the test efficiency of the concrete shrinkage test device, making it more widely applicable.

[0013] 2. By setting auxiliary components, the rotating plate can be driven, and the rotating plate can be rotated 180 degrees under the drive of the servo motor. This allows the operator to fix the concrete sample to be tested and perform shrinkage tests on the fixed concrete sample at the same time, thereby improving the testing efficiency of the concrete shrinkage testing device and making it more applicable.

[0014] 3. By setting up a concrete fixing component, the concrete sample is fixed by pushing the extrusion plate through the electric telescopic rod. This can fix the concrete sample to be tested and the concrete sample currently being tested, thereby ensuring the stability of the concrete sample during the test and improving the stability and accuracy of the concrete shrinkage test device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of a concrete shrinkage testing device according to an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of a concrete shrinkage testing device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of an auxiliary component in a concrete shrinkage testing device according to an embodiment of the present invention;

[0019] Figure 4This is a schematic diagram of the auxiliary components in a concrete shrinkage testing device according to an embodiment of the present invention from another angle.

[0020] Figure 5 This is a schematic diagram of the drive disc in a concrete shrinkage testing device according to an embodiment of the present invention;

[0021] Figure 6 This is a structural schematic diagram of a concrete fixing component in a concrete shrinkage testing device according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Test bench; 2. Support frame; 3. Electric telescopic rod one; 4. Frame; 5. Dial indicator; 6. Fixing plate; 7. Auxiliary components; 701. Support plate; 702. Drive component; 7021. Servo motor; 7022. Drive disk; 7023. Drive column; 703. Rotating component; 7031. Rotating column one; 7032. Hollowed-out turntable one; 7033. Support column one; 7034. Rotating rod; 7035. Hollowed-out turntable two; 7036. Support column two; 7037. Rotating column two; 8. Rotating plate; 9. Concrete fixing component; 901. Placement plate; 902. Mounting plate; 903. Electric telescopic rod two; 904. Extrusion plate; 905. Limiting slider; 906. Limiting groove; 907. L-shaped auxiliary rod; 908. Connecting shaft; 10. Control panel. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] According to an embodiment of the present invention, a concrete shrinkage testing device is provided.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6As shown, the concrete shrinkage testing device according to an embodiment of the present invention includes a test bench 1. A support frame 2 is provided at one top end of the test bench 1. An electric telescopic rod 3 is provided through the top end of the support frame 2. A frame 4 is connected to the telescopic end of the electric telescopic rod 3. A dial indicator 5 is provided through the bottom inner end of the frame 4. A fixing plate 6 is provided at the bottom of the test bench 1. An auxiliary component 7 is provided at the top end of the fixing plate 6. A rotating plate 8 is connected through the top end of the auxiliary component 7 through the top inner end of the test bench 1. Concrete fixing components 9 that cooperate with the dial indicator 5 are symmetrically provided at both ends of the top of the rotating plate 8. A control panel 10 is provided on one side of the test bench 1.

[0027] Furthermore, the working principles and structures of the electric telescopic pole 1 (3), dial indicator 5, servo motor 7021, and electric telescopic pole 2 (903) are all existing technologies, and will not be elaborated upon here.

[0028] In one embodiment, the auxiliary component 7 includes a support plate 701 disposed at the top of the fixed plate 6. A driving member 702 is disposed on one side of the support plate 701, and a rotating member 703 is disposed at one end of the driving member 702. The driving member 702 includes a servo motor 7021 disposed on one side wall of the fixed plate 6. The output end of the servo motor 7021 passes through one side wall of the fixed plate 6 and is connected to a driving disk 7022. In a specific application, a plurality of driving columns 7023 are disposed on one side half of the driving disk 7022, and the driving columns 7023 occupy 50% of the circumference of the driving disk 7022. Therefore, when the driving columns 7023 leave the second support column 7036, the second hollow turntable 7035 drives the rotating plate 8 to rotate 180 degrees clockwise. A plurality of driving columns 7023 are disposed on one side wall of the driving disk 7022, and the rotating member 703 includes a rotating column 7031 disposed at the top of the fixed plate 6. The top of the device is connected to a perforated turntable 7032. Several support pillars 7033 are located in the middle of the perforated turntable 7032. A rotating rod 7034 is located at the top of the perforated turntable 7032. A perforated turntable 7035 is connected to the top of the rotating rod 7034. Several support pillars 7036 are located in the middle of the perforated turntable 7035. Both support pillars 7033 and 7036 are connected to a drive column 7023. A rotating column 7037 is located at the top of the perforated turntable 7035 and connected to the bottom of the rotating plate 8. This allows the rotating plate 8 to be driven by the auxiliary component 7, enabling it to rotate 180 degrees under the drive of the servo motor 7021. This allows for simultaneous fixing of the concrete sample to be tested and performing shrinkage tests on the fixed concrete sample, thereby improving the testing efficiency of the concrete shrinkage testing device and broadening its applicability.

[0029] The specific working principle of auxiliary component 7 is as follows: When it is necessary to rotate the rotating plate 8 180 degrees, the servo motor 7021 is started to drive the drive disk 7022 to rotate. Under the action of the drive disk 7022, the drive column 7023 is driven to rotate. When the drive column 7023 contacts the support column 7036, the drive column 7023 will give the support column 7036 a positive thrust and drive the support column 7036 to rotate in the forward direction. Under the action of the support column 7036, the hollow turntable 7035 is driven to rotate. When the drive column 7023 leaves the support column 7036, the rotating column 7037 drives the rotating plate 8 to move 180 degrees in the forward direction, which can rotate the fixed concrete sample to below the dial indicator 5, so that the concrete sample can be analyzed by the dial indicator 5. The shrinkage test is performed, and then the staff can fix the next concrete sample at the other end of the rotating plate 8 while the test is being conducted. After the current concrete sample is tested, the drive column 7023 continues to rotate and will contact the support column 7033. The drive column 7023 will then give the support column 7033 a reverse thrust, which will drive the support column 7033 to rotate in the opposite direction. Under the action of the support column 7033, the hollow turntable 7032 will rotate in the opposite direction. At this time, the rotating column 7037 will drive the rotating plate 8 to move 180 degrees in the opposite direction, so that another fixed concrete sample can be rotated to the bottom of the dial gauge 5 for testing. At the same time, the tested concrete sample can be removed, thereby improving the testing efficiency of the concrete shrinkage test device and making it more applicable.

[0030] In one embodiment, the concrete fixing component 9 includes a placement plate 901 disposed at the top of the rotating plate 8. A mounting plate 902 is disposed on one side of the top of the placement plate 901. An electric telescopic rod 903 is passed through one side of the mounting plate 902. The telescopic end of the electric telescopic rod 903 is connected to a pressing plate 904. Limiting sliders 905 are symmetrically disposed at both ends of the bottom of the pressing plate 904. Limiting grooves 906 that cooperate with the limiting sliders 905 are symmetrically disposed at both ends of the top of the placement plate 901. L-shaped auxiliary rods 907 are symmetrically disposed on one side of the top of the placement plate 901. The L-shaped auxiliary rods 907 and the placement plate 901 are connected by connecting shafts 908. The cross-sections of the limiting sliders 905 and the limiting grooves 906 are both trapezoidal. This allows the concrete fixing component 9 to fix both the concrete sample to be tested and the concrete sample currently being tested, thereby ensuring the stability of the concrete sample during the test and improving the stability and accuracy of the concrete shrinkage test device.

[0031] The concrete fixing component 9 works as follows: The concrete sample to be tested is placed on the placement plate 901. Then, by activating the electric telescopic rod 903, the extrusion plate 904 moves under the action of the limiting slider 905 and the limiting groove 906. Under the action of the extrusion plate 904, the concrete sample is pushed closer to the L-shaped auxiliary rod 907. When the concrete sample contacts the L-shaped auxiliary rod 907, one side of the L-shaped auxiliary rod 907 is pushed by the concrete sample, and the other side of the L-shaped auxiliary rod 907 is pressed against one end of the concrete sample and one side of the concrete sample. This ensures the stability of the concrete sample during the test, thereby improving the stability and accuracy of the concrete shrinkage test device.

[0032] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0033] In practical application, the operator first places the concrete sample in the concrete fixing component 9 for fixation. Then, the electric telescopic rod 3 is activated via the control panel 10, causing the frame 4 to move downwards. Under the action of the frame 4, the dial indicator 5 moves downwards and contacts the surface of the concrete sample. At this point, the degree of shrinkage of the concrete sample is detected by the dial indicator 5. The shrinkage degree of one concrete sample is obtained by observing the dial indicator 5. Then, the auxiliary component 7 is activated to rotate another concrete sample 180 degrees to below the dial indicator 5, so that the dial indicator 5 contacts the surface of the other concrete sample and is used for testing. This allows the operator to remove the tested concrete sample and fix a new concrete sample while testing another sample, repeating the above operation. Thus, the stability of the concrete sample during the test is ensured by the concrete fixing component 9, and the testing efficiency of the concrete shrinkage testing device is improved by the auxiliary component 7, making it more widely applicable.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete shrinkage testing apparatus, comprising a test bench (1), characterized in that, The test bench (1) is provided with a support frame (2) at one end of the top. An electric telescopic rod (3) is provided through the top of the support frame (2). A frame (4) is connected to the telescopic end of the electric telescopic rod (3). A dial indicator (5) is provided through the bottom of the frame (4). A fixing plate (6) is provided at the bottom of the test bench (1). An auxiliary component (7) is provided at the top of the fixed plate (6). The top of the auxiliary component (7) passes through the inner top of the test bench (1) and is connected to a rotating plate (8). Concrete fixing components (9) that cooperate with the dial gauge (5) are symmetrically arranged at both ends of the top of the rotating plate (8). A control panel (10) is provided on one side of the test bench (1).

2. The concrete shrinkage testing device according to claim 1, characterized in that, The auxiliary component (7) includes a support plate (701) disposed at the top of the fixed plate (6), a driving member (702) is disposed on one side of the support plate (701), and a rotating member (703) is disposed at one end of the driving member (702).

3. The concrete shrinkage testing device according to claim 2, characterized in that, The driving component (702) includes a servo motor (7021) disposed on one side wall of the fixed plate (6). The output end of the servo motor (7021) passes through one side wall of the fixed plate (6) and is connected to a driving disk (7022). A plurality of driving columns (7023) are disposed on one side wall of the driving disk (7022).

4. The concrete shrinkage testing device according to claim 3, characterized in that, The rotating component (703) includes a rotating column (7031) disposed at the top of the fixed plate (6), the top of the rotating column (7031) is connected to a hollow turntable (7032), a plurality of support columns (7033) are disposed in the middle of the hollow turntable (7032), and a rotating rod (7034) is disposed at the top of the hollow turntable (7032).

5. The concrete shrinkage testing device according to claim 4, characterized in that, The top of the rotating rod (7034) is connected to a hollow turntable two (7035). The hollow turntable two (7035) is provided with several support columns two (7036) in the middle. Both the support column one (7033) and the support column two (7036) are engaged with the driving column (7023). The top of the hollow turntable two (7035) is provided with a rotating column two (7037) connected to the bottom of the rotating plate (8).

6. The concrete shrinkage testing device according to claim 1, characterized in that, The concrete fixing component (9) includes a placement plate (901) disposed at the top of the rotating plate (8), an installation plate (902) is disposed on one side of the top of the placement plate (901), an electric telescopic rod (903) is disposed through one side of the installation plate (902), and an extrusion plate (904) is connected to the telescopic end of the electric telescopic rod (903). The bottom ends of the extrusion plate (904) are symmetrically provided with limiting sliders (905), and the top ends of the placement plate (901) are symmetrically provided with limiting grooves (906) that cooperate with the limiting sliders (905). The top side of the placement plate (901) is symmetrically provided with an L-shaped auxiliary rod (907), and the L-shaped auxiliary rod (907) and the placement plate (901) are connected by a connecting shaft (908).

7. A concrete shrinkage testing device according to claim 6, characterized in that, The cross-sections of both the limiting slider (905) and the limiting groove (906) are trapezoidal.

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