Measurement device for measuring expansion and contraction of aeolian sand concrete

Abstract

The present invention relates to the technical field of measurement devices. Disclosed is a measurement device for measuring the expansion and contraction of aeolian sand concrete. The measurement device comprises: a testing table; a positioning assembly comprising a driving member and several positioning members, wherein several sliding grooves are formed in the testing table, the several positioning members are arranged in the sliding grooves, and the driving member is arranged in the testing table and is configured to drive the positioning members to come into contact with a sample; a support assembly comprising several support frames and several support members, wherein the several support frames are axially fixedly connected to the middle of the top end of the testing table, the several support members are respectively arranged in the several support frames, when the support members are in a first state, the sample moves on the support members, and when the support members are in a second state, the sample is stationary on the support members; and a testing assembly comprising two clamping plates and a measurement member, wherein the clamping plates are used for clamping the sample, and the measurement member is arranged on one of the clamping plates and is configured to be in contact with the sample. The measurement device of the present invention has a simple structure, is convenient to operate, and ensures the precise positioning of the sample during multiple measurements, thereby ensuring the precision of a measurement result.

Description

A measuring device for measuring the expansion and contraction of aeolian sand concrete. Technical Field

[0001] This invention relates to the field of measuring device technology, and in particular to a measuring device for measuring the expansion and contraction of aeolian sand concrete. Background Technology

[0002] Concrete features high-volume ultrafine admixtures, high-volume high-performance water-reducing agents, and low water-cement ratio, which can greatly improve its mechanical properties, physical properties, and durability. However, it also causes significant shrinkage during hydration, thereby increasing the risk of early cracking.

[0003] Aeolian sand concrete is a special type of concrete material, primarily made from aeolian sand resources. With its lightweight, heat-insulating, environmentally friendly properties, and excellent mechanical properties, aeolian sand concrete has broad application prospects in construction and other fields.

[0004] Since multiple measurements of the test specimen are required, typically three measurements are taken and the average value is used, in order to ensure the accuracy of the measurement, it is necessary to ensure that the test specimen is placed in a basically the same position each time. However, existing measuring devices for the expansion and contraction of aeolian sand concrete mostly involve manually placing the concrete sample block and then adjusting the measuring device to take the measurement. This cannot guarantee the accuracy of the sample position each time, thus failing to guarantee the accuracy of the measurement.

[0005] Therefore, there is an urgent need for a measuring device to measure the expansion and contraction of aeolian sand concrete in order to solve the above problems.

[0006] Summary of the Invention

[0007] The purpose of this invention is to provide a measuring device for measuring the expansion and contraction of aeolian sand concrete, so as to solve the problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides the following solution: The present invention provides a measuring device for measuring the expansion and contraction of aeolian sand concrete, comprising:

[0009] Test bench;

[0010] The positioning component includes a driving component and several positioning components. Several grooves are equally spaced along the circumference of the test platform. Several positioning components are respectively disposed in the grooves. The driving component is disposed in the test platform to drive the positioning components to contact the sample.

[0011] The support assembly includes several support frames and several support members. The several support frames are axially fixedly connected to the center of the top of the test bench. The several support members are respectively disposed in the several support frames. When the support member is in a first state, the sample moves on the support member. When the support member is in a second state, the sample is stationary on the support member.

[0012] The test assembly includes two clamping plates and a measuring element, wherein the clamping plates are used to clamp the sample, and the measuring element is disposed on one of the clamping plates and in contact with the sample.

[0013] Preferably, the positioning element includes a threaded rod rotatably connected in the slide groove, a positioning plate is threadedly connected to the threaded rod, the outer wall of the positioning plate is in sliding contact with the inner wall of the slide groove, the positioning plate is in contact with the outer wall of the sample, and a plurality of the threaded rods are respectively connected to the driving element for transmission.

[0014] Preferably, the driving component includes a motor fixedly connected to the bottom end of the test bench, the output shaft of the motor extending into the test bench and fixedly connected to a first bevel gear, one end of the threaded rod extending into the test bench and fixedly connected to a second bevel gear, and a plurality of second bevel gears meshing with the first bevel gear.

[0015] Preferably, the support frame has two grooves, and the support member includes two sliders. The two sliders are slidably connected in the two grooves respectively. The top of each slider is fixedly connected with a plurality of support rods along the axial direction. A support block is fixedly connected to the plurality of support rods at the top of one slider, and a ball is rotatably connected to the plurality of support rods at the top of the other slider.

[0016] In the first state, the sphere is in contact with the bottom of the sample;

[0017] In the second state, the support block is in contact with the bottom of the sample.

[0018] Preferably, the measuring element includes a dial indicator, which is threadedly connected to one of the clamping plates and in contact with one end of the sample.

[0019] Preferably, another clamping plate is threadedly connected to a push rod, one end of which contacts the other end of the sample.

[0020] Preferably, a cylinder is fixedly connected inside the groove, and the telescopic end of the cylinder is fixedly connected to the bottom end of the slider.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] This invention provides a measuring device for measuring the expansion and contraction of aeolian sand concrete. For measuring concrete samples, which requires repeated placement, the device supports the sample on a support. In the first state, the sample is movable, and a positioning element moves the sample along the support, achieving self-positioning. After positioning, the support switches to a second state, providing stable support for the positioned sample. This ensures precise positioning and stable support after positioning. Finally, a measuring element measures the expansion and contraction of the sample. This invention features a simple structure, convenient operation, and ensures accurate sample positioning during multiple measurements, thus guaranteeing accurate measurement results. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the side structure of the support frame of the present invention;

[0026] Figure 3 is a schematic diagram of the front structure of the support frame of the present invention;

[0027] Figure 4 is a top view of the test bench of the present invention;

[0028] The components include: 1. Test bench; 2. Slide groove; 3. Support frame; 4. Clamping plate; 5. Sample; 6. Threaded rod; 7. Positioning plate; 8. Motor; 9. First bevel gear; 10. Second bevel gear; 11. Groove; 12. Slider; 13. Support rod; 14. Support block; 15. Ball; 16. Dial indicator; 17. Top rod; 18. Cylinder. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Referring to Figures 1-4, the present invention provides a measuring device for measuring the expansion and contraction of aeolian sand concrete, comprising:

[0032] Test bench 1;

[0033] The positioning component includes a driving component and several positioning components. Several grooves 2 are equally spaced along the circumference of the test table 1. Several positioning components are respectively set in the grooves 2. The driving component is set in the test table 1 to drive the positioning components to contact the sample 5.

[0034] The support assembly includes several support frames 3 and several support members. The several support frames 3 are fixedly connected to the top center of the test bench 1 along the axial direction. The several support members are respectively set in the several support frames 3. When the support member is in the first state, the sample 5 moves on the support member. When the support member is in the second state, the sample 5 is stationary on the support member.

[0035] The test assembly includes two clamping plates 4 and a measuring element. The clamping plates 4 are used to clamp the sample 5, and the measuring element is set on one of the clamping plates 4 and is in contact with the sample 5.

[0036] The scheme is further optimized. The positioning component includes a threaded rod 6 rotatably connected in the slide groove 2. A positioning plate 7 is threadedly connected to the threaded rod 6. The outer wall of the positioning plate 7 slides in contact with the inner wall of the slide groove 2. The positioning plate 7 contacts the outer wall of the sample 5. Several threaded rods 6 are respectively connected to the driving component for transmission.

[0037] Referring to Figures 1 and 4, the threaded rod 6 is rotated by the set driving component. When the threaded rod 6 rotates, it drives the positioning plate 7 to move towards the sample 5, thereby achieving the positioning of the sample 5.

[0038] The scheme is further optimized. The driving component includes a motor 8 fixedly connected to the bottom of the test bench 1. The output shaft of the motor 8 extends into the test bench 1 and is fixedly connected to a first bevel gear 9. One end of the threaded rod 6 extends into the test bench 1 and is fixedly connected to a second bevel gear 10. Several second bevel gears 10 mesh with the first bevel gear 9.

[0039] Referring to Figure 1, the motor 8 drives the first bevel gear 9 to rotate, and the first bevel gear 9 synchronously drives the meshing second bevel gear 10 to rotate. Several threaded rods 6 rotate synchronously, causing the connected positioning plate 7 to move and retract towards the center, thereby achieving self-positioning of the sample 5 and ensuring the accuracy of the sample 5 position each time it is placed.

[0040] The scheme is further optimized. Two grooves 11 are provided on the support frame 3. The support component includes two sliders 12. The two sliders 12 are slidably connected in the two grooves 11 respectively. Several support rods 13 are fixedly connected to the top of each slider 12 along the axial direction. Support blocks 14 are fixedly connected to several support rods 13 at the top of one slider 12, and spheres 15 are rotatably connected to several support rods 13 at the top of the other slider 12.

[0041] In the first state, sphere 15 is in contact with the bottom of sample 5;

[0042] In the second state, support block 14 is in contact with the bottom of sample 5.

[0043] Referring to Figures 2 and 3, in the first state, the corresponding slider 12 drives the ball 15 to rise and contact the bottom of the sample 5 for sliding support. When the positioning plate 7 moves, it can push the sample 5 to move and make it upright, ensuring the accuracy of placing the sample 5 each time. In the second state, the support block 14 rises and the ball 15 falls, and the support block 14 contacts the bottom of the sample 5 to achieve stable support for the positioned sample 5.

[0044] The design was further optimized, and the measuring component included a dial indicator 16, which was threaded onto one of the clamping plates 4 and in contact with one end of the sample 5.

[0045] Referring to Figures 1 and 4, the dial indicator 16 is brought into contact with sample 5 for intuitive measurement.

[0046] The design was further optimized by attaching a push rod 17 to another clamping plate 4, with one end of the push rod 17 in contact with the other end of the sample 5.

[0047] Referring to Figures 1 and 4, the sample 5 is supported by turning the threaded rod 17 to contact the side wall of the sample 5.

[0048] In a further optimized design, a cylinder 18 is fixedly connected inside the groove 11, and the telescopic end of the cylinder 18 is fixedly connected to the bottom end of the slider 12.

[0049] Referring to Figures 2 and 3, the cylinder 18 drives the slider 12 to move within the groove 11.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A measuring device for measuring the expansion and contraction of aeolian sand concrete, characterized in that, include: Test bench (1); The positioning component includes a driving component and several positioning components. Several grooves (2) are equally spaced along the circumference of the test platform (1). Several positioning components are respectively arranged in the grooves (2). The driving component is arranged in the test platform (1) to drive the positioning components to contact the sample (5). The support assembly includes several support frames (3) and several support members. Several support frames (3) are fixedly connected axially to the middle of the top of the test bench (1). Several support members are respectively arranged in several support frames (3). When the support member is in the first state, the sample (5) moves on the support member. When the support member is in the second state, the sample (5) is stationary on the support member. The test assembly includes two clamping plates (4) and a measuring element, wherein the clamping plates (4) are used to clamp the sample (5) and the measuring element is disposed on one of the clamping plates (4) and in contact with the sample (5).

2. The measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 1, characterized in that: The positioning component includes a threaded rod (6) rotatably connected in the slide groove (2), a positioning plate (7) is threadedly connected to the threaded rod (6), the outer side wall of the positioning plate (7) slides in contact with the inner side wall of the slide groove (2), the positioning plate (7) contacts the outer wall of the sample (5), and several threaded rods (6) are respectively connected to the driving component for transmission.

3. A measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 2, characterized in that: The driving component includes a motor (8) fixedly connected to the bottom end of the test bench (1). The output shaft of the motor (8) extends into the test bench (1) and is fixedly connected to a first bevel gear (9). One end of the threaded rod (6) extends into the test bench (1) and is fixedly connected to a second bevel gear (10). A plurality of second bevel gears (10) mesh with the first bevel gear (9).

4. A measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 1, characterized in that: The support frame (3) has two grooves (11) and the support member includes two sliders (12). The two sliders (12) are slidably connected in the two grooves (11). The top of each slider (12) is fixedly connected with several support rods (13) along the axial direction. A support block (14) is fixedly connected to several support rods (13) at the top of one slider (12), and a ball (15) is rotatably connected to several support rods (13) at the top of the other slider (12). In the first state, the sphere (15) is in contact with the bottom end of the sample (5); In the second state, the support block (14) is in contact with the bottom end of the sample (5).

5. A measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 1, characterized in that: The measuring element includes a dial indicator (16) which is threaded onto one of the clamping plates (4) and in contact with one end of the sample (5).

6. A measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 5, characterized in that: Another clamping plate (4) is threadedly connected to a push rod (17), one end of which contacts the other end of the sample (5).

7. A measuring device for measuring the expansion and contraction of aeolian sand concrete according to claim 4, characterized in that: A cylinder (18) is fixedly connected inside the groove (11), and the telescopic end of the cylinder (18) is fixedly connected to the bottom end of the slider (12).

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