A concrete shrinkage test testing device

Abstract

The utility model discloses a kind of concrete shrinkage test testing device, it is related to concrete testing technical field.The utility model includes testing mechanism and auxiliary mechanism, and the both ends of concrete block are provided with measuring nail, and the top of base is provided with fixed base, and the inside of fixed base is installed with dial gauge;Auxiliary mechanism includes arc bottom plate, the guiding arc plate for guiding the moving direction of measuring nail and the cleaning scraper for cleaning the surface of dial gauge measuring rod and the surface of measuring nail.The utility model is through setting auxiliary mechanism, not only can be in to the shrinkage of concrete is tested when, the moving direction of measuring nail is guided, make measuring nail and dial gauge measuring rod accurate alignment, to ensure the accuracy of test, and after measuring nail alignment, through rotating auxiliary mechanism, the surface of dial gauge measuring rod and the surface of measuring nail are cleaned, avoid concrete debris, dust and other impurities influence the flatness of measuring nail and dial gauge measuring rod contact surface.

Description

Technical Field

[0001] This utility model belongs to the field of concrete testing technology, and in particular relates to a concrete shrinkage test device. Background Technology

[0002] Concrete shrinkage refers to the reduction in volume of concrete during and after the setting and hardening process, caused by factors such as water evaporation, chemical reactions, and temperature changes. If this shrinkage is constrained by external or internal factors, it can easily generate tensile stress in the structure, leading to cracks and affecting the durability and safety of the structure. In order to assess the volume stability of concrete and predict the risk of cracking, it is necessary to conduct tests on concrete shrinkage.

[0003] During the testing of concrete shrinkage, a dial indicator needs to be in contact with the probe pin. However, after each test, concrete debris, petroleum jelly residue, or dust may adhere to the surface of the dial indicator and the probe pin, affecting the sensor interface or the flatness of the probe contact surface, thus having a certain impact on the concrete shrinkage test results. Utility Model Content

[0004] The purpose of this invention is to provide a concrete shrinkage test device. By setting up an auxiliary mechanism, it can guide the movement direction of the test pin during the concrete shrinkage test, so that the test pin is precisely aligned with the dial indicator rod to ensure the accuracy of the test. On the other hand, after the test pin is aligned, the auxiliary mechanism can be rotated to clean the surface of the dial indicator rod and the test pin, which can prevent concrete debris, dust and other impurities from affecting the flatness of the contact surface between the test pin and the dial indicator rod and thus affecting the concrete shrinkage test results. This solves the existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a concrete shrinkage test device, comprising a test mechanism, an auxiliary mechanism, and a concrete block. The test mechanism includes a base, a support block on the top of the base, and the concrete block placed on top of the support block. Test pins are provided at both ends of the concrete block. A fixing seat is provided on the top of the base, and a dial indicator is installed inside the fixing seat. The auxiliary mechanism includes an arc-shaped base plate, a guide arc plate for guiding the movement direction of the test pins, and a cleaning scraper for cleaning the surface of the dial indicator rod and the surface of the test pins. The arc-shaped base plate is fixed to the outside of the dial indicator rod.

[0007] Furthermore, a guide arc plate is provided at one end of the arc-shaped base plate, a limiting groove is provided inside the guide arc plate, a limiting slide plate is provided inside the limiting groove, an arc-shaped flexible plate is provided at one end of the limiting slide plate, elastic support plates are provided on both sides of the arc-shaped flexible plate, and a cleaning scraper is provided at one end of the elastic support plate.

[0008] By adopting the above technical solution: the guide arc plate is C-shaped, which guides the movement direction of the probe when it moves, ensuring precise alignment between the dial indicator probe and the probe to guarantee the accuracy of the test; the arc-shaped flexible plate is an arc-shaped material, and the elastic support plate is S-shaped, possessing a certain degree of elasticity. The elastic support plate supports and pushes the cleaning scraper, allowing it to remove dust and other impurities adhering to the surface of the dial indicator probe and the probe, preventing dust and other impurities from affecting the flatness of the contact surface of the probe or probe and thus affecting the test results; the cleaning scraper is connected to the arc-shaped flexible plate through the elastic support plate, and under the push of the elastic support plate, the cleaning scraper can make close contact with the surface of the dial indicator probe and the probe to clean the surface of the dial indicator probe and the probe.

[0009] Furthermore, the sidewall of the arc-shaped flexible plate is provided with an elastic connecting plate, one end of which is connected to the sidewall of the arc-shaped bottom plate.

[0010] By adopting the above technical solution: the elastic connecting plate is an arc-shaped plate, and the elastic connecting plate is set between the arc-shaped soft plate and the arc-shaped base plate. After the cleaning scraper has cleaned, the elastic connecting plate can push the arc-shaped soft plate to reset and move.

[0011] Furthermore, the sidewall of the arc-shaped base plate is provided with a clamping arc plate, the arc-shaped base plates are connected to each other through the clamping arc plates, and a protective pad is provided inside the arc-shaped base plate.

[0012] By adopting the above technical solution: the clamping arc plate is an arc-shaped plate, which is set between two arc-shaped base plates. The arc-shaped base plates and the clamping arc plates are arranged alternately and in a circular array. Under the action of the clamping arc plates, the arc-shaped base plates are tightly attached to the outside of the dial indicator measuring rod.

[0013] Furthermore, an arc-shaped connecting plate is provided at one end of the arc-shaped base plate, and an adjusting push plate is provided at one end of the arc-shaped connecting plate. The adjusting push plate is an L-shaped plate.

[0014] By adopting the above technical solution: the push plate is adjusted to be an L-shaped plate, and the push plate is connected by an arc-shaped connecting plate. By pressing the push plate, the arc-shaped base plate is pushed outward, thus making it easy to install the arc-shaped base plate onto the outside of the dial indicator measuring rod.

[0015] Furthermore, the side wall of the limiting slide plate is provided with a guide slider, the inside of the limiting slide groove is provided with a guide groove, and the guide slider is slidably sleeved in the guide groove.

[0016] By adopting the above technical solution: the guide slide is located inside the limiting slide, and the outer wall of the guide slider is slidably connected to the inner wall of the guide slide; the guide slider moves in a direction within the guide slide, thereby allowing the limiting slide to slide in a direction within the limiting slide, and the arc-shaped soft plate to move to the designated position.

[0017] Furthermore, a limiting bracket is provided on the top of the base, and the test pin is installed inside the limiting bracket, with one end of the test pin contacting one end of the dial indicator probe.

[0018] This utility model has the following beneficial effects:

[0019] This utility model, by setting an auxiliary mechanism, can not only guide the movement direction of the probe, but also clean the surface of the dial indicator probe rod and the surface of the probe.

[0020] This setup serves two purposes: firstly, it guides the movement of the test pin during concrete shrinkage testing, ensuring precise alignment between the test pin and the dial indicator rod to guarantee test accuracy; secondly, after alignment, the rotating auxiliary mechanism cleans the surfaces of the dial indicator rod and the test pin, preventing concrete debris, dust, and other impurities from affecting the flatness of the contact surface between the test pin and the dial indicator rod, which could negatively impact the concrete shrinkage test results.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the auxiliary mechanism of this utility model;

[0025] Figure 3 This is a first cross-sectional view of the auxiliary mechanism of this utility model;

[0026] Figure 4 This is a second cross-sectional view of the auxiliary mechanism of this utility model;

[0027] Figure 5 This utility model Figure 4Enlarged structural diagram at point A in the middle.

[0028] The components represented by each number in the attached diagram are listed below: 1. Testing mechanism; 101. Base; 102. Support block; 103. Limiting bracket; 104. Fixing seat; 105. Dial indicator; 2. Auxiliary mechanism; 201. Arc-shaped base plate; 202. Guide arc plate; 203. Limiting slide groove; 204. Limiting slide plate; 205. Arc-shaped soft plate; 206. Elastic support plate; 207. Cleaning scraper; 208. Elastic connecting plate; 209. Guide slide groove; 210. Guide slider; 211. Clamping arc plate; 212. Protective soft pad; 213. Arc-shaped connecting plate; 214. Adjusting push plate; 3. Concrete block; 4. Testing nail. Detailed Implementation

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

[0030] Please see Figure 1 - Figure 5 This utility model is a concrete shrinkage test device, including a test mechanism 1, an auxiliary mechanism 2, and a concrete block 3. The test mechanism 1 includes a base 101, a support block 102 is provided on the top of the base 101, the concrete block 3 is placed on the top of the support block 102, and test nails 4 are provided at both ends of the concrete block 3. A fixing seat 104 is provided on the top of the base 101, and a dial indicator 105 is installed inside the fixing seat 104. The auxiliary mechanism 2 includes an arc-shaped base plate 201, a guide arc plate 202 for guiding the movement direction of the test nails 4, and a cleaning scraper 207 for cleaning the surface of the dial indicator 105 measuring rod and the surface of the test nails 4. The arc-shaped base plate 201 is fixed to the outside of the dial indicator 105 measuring rod.

[0031] A guide arc plate 202 is provided at one end of the arc-shaped base plate 201. A limiting groove 203 is provided inside the guide arc plate 202, and a limiting slide plate 204 is provided inside the limiting groove 203. An arc-shaped flexible plate 205 is provided at one end of the limiting slide plate 204. Elastic support plates 206 are provided on both sides of the arc-shaped flexible plate 205, and a cleaning scraper 207 is provided at one end of each elastic support plate 206. The guide arc plate 202 is C-shaped and can guide the movement direction of the test pin 4 when it moves, ensuring precise alignment between the dial indicator 105 probe and the test pin 4 to guarantee the accuracy of the test. The arc-shaped flexible plate 205 is an arc-shaped material. The elastic support plate 206 is S-shaped and has a certain degree of elasticity. The elastic support plate 206 supports and pushes the cleaning scraper 207, thereby allowing the cleaning scraper 207 to come into close contact with the surface of the dial indicator 105 measuring rod and the surface of the measuring nail 4, removing dust and other impurities. This prevents dust and other impurities from affecting the flatness of the contact surface of the measuring rod or the measuring nail 4 and thus affecting the test results. The cleaning scraper 207 is connected to the arc-shaped soft plate 205 through the elastic support plate 206. Under the push of the elastic support plate 206, the cleaning scraper 207 can come into close contact with the surface of the dial indicator 105 measuring rod and the measuring nail 4, so as to clean the surface of the dial indicator 105 measuring rod and the surface of the measuring nail 4.

[0032] An elastic connecting plate 208 is provided on the side wall of the curved flexible plate 205. One end of the elastic connecting plate 208 is connected to the side wall of the curved base plate 201. The elastic connecting plate 208 is a curved plate material. The elastic connecting plate 208 is located between the curved flexible plate 205 and the curved base plate 201. After the cleaning scraper 207 cleans, the elastic connecting plate 208 can push the curved flexible plate 205 to reset and move.

[0033] The side wall of the arc-shaped base plate 201 is provided with a clamping arc plate 211. The arc-shaped base plates 201 are connected to each other through the clamping arc plates 211. The inside of the arc-shaped base plate 201 is provided with a protective soft pad 212. The clamping arc plate 211 is an arc-shaped plate. The clamping arc plate 211 is located between two arc-shaped base plates 201. The arc-shaped base plates 201 and the clamping arc plates 211 are arranged alternately and in a circular array. Under the action of the clamping arc plates 211, the arc-shaped base plate 201 is tightly attached to the outside of the dial indicator 105 measuring rod.

[0034] An arc-shaped connecting plate 213 is provided at one end of the arc-shaped base plate 201, and an adjusting push plate 214 is provided at the other end of the arc-shaped connecting plate 213. The adjusting push plate 214 is an L-shaped plate. The adjusting push plate 214 is connected to the arc-shaped connecting plate 213. By pressing the adjusting push plate 214, the arc-shaped base plate 201 is pushed outward, thereby facilitating the installation of the arc-shaped base plate 201 onto the outside of the dial indicator 105 measuring rod.

[0035] The side wall of the limiting slide plate 204 is provided with a guide slider 210, and the inside of the limiting slide groove 203 is provided with a guide slide groove 209. The guide slider 210 is slidably sleeved in the guide slide groove 209. The guide slide groove 209 is located inside the limiting slide groove 203, and the outer wall of the guide slider 210 is slidably connected to the inner wall of the guide slide groove 209. This allows the guide slider 210 to move in a directional manner within the guide slide groove 209, thereby allowing the limiting slide plate 204 to slide in a directional manner within the limiting slide groove 203, and moving the arc-shaped flexible plate 205 to the designated position.

[0036] The base 101 has a limit holder 103 on its top. The test pin 4 is installed inside the limit holder 103, and one end of the test pin 4 is in contact with one end of the measuring rod of the dial indicator 105.

[0037] A specific application of this embodiment is as follows: By pressing and adjusting the push plate 214, the arc-shaped base plate 201 is pushed outward, and then the arc-shaped base plate 201 is fixedly sleeved on the outside of the dial indicator 105 measuring rod. Under the action of the clamping arc plate 211, the arc-shaped base plate 201 is clamped and fixed on the outside of the dial indicator 105 measuring rod. Then, the concrete block 3 to be tested is placed on the top of the support block 102, and the measuring nail 4 at one end of the concrete block 3 is placed inside the limiting seat 103. Then, by adjusting the position of the concrete block 3, the measuring nail 4 is moved, and then the guide arc... Under the action of plate 202, the movement direction of the measuring nail 4 is guided, so that the measuring nail 4 is precisely aligned with the measuring rod of dial indicator 105. Then, under the push of elastic support plate 206, the cleaning scraper 207 and the surface of the measuring rod of dial indicator 105 are tightly attached to the surface of the measuring nail 4. Then, by rotating the cleaning scraper 207, the surface of the measuring rod of dial indicator 105 and the surface of the measuring nail 4 are cleaned. This can prevent concrete debris, dust and other impurities from affecting the flatness of the contact surface between the measuring nail 4 and the measuring rod of dial indicator 105, which would have a certain impact on the concrete shrinkage test results.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A concrete shrinkage test apparatus, comprising a test mechanism (1), an auxiliary mechanism (2), and a concrete block (3), characterized in that: The testing mechanism (1) includes a base (101), a support block (102) is provided on the top of the base (101), a concrete block (3) is placed on the top of the support block (102), a measuring nail (4) is provided at both ends of the concrete block (3), a fixing seat (104) is provided on the top of the base (101), and a dial indicator (105) is installed inside the fixing seat (104). The auxiliary mechanism (2) includes an arc-shaped base plate (201), a guide arc plate (202) for guiding the movement direction of the probe (4), and a cleaning scraper (207) for cleaning the surface of the dial indicator (105) probe and the surface of the probe (4). The arc-shaped base plate (201) is fixed to the outside of the dial indicator (105) probe.

2. The concrete shrinkage test apparatus according to claim 1, characterized in that, The arc-shaped base plate (201) is provided with a guide arc plate (202) at one end, and a limiting groove (203) is provided inside the guide arc plate (202). A limiting slide plate (204) is provided inside the limiting groove (203), and an arc-shaped soft plate (205) is provided at one end of the limiting slide plate (204).

3. The concrete shrinkage test apparatus according to claim 2, characterized in that, The curved flexible plate (205) is provided with elastic support plates (206) on both sides, and a cleaning scraper (207) is provided at one end of the elastic support plate (206).

4. The concrete shrinkage test apparatus according to claim 2, characterized in that, The side wall of the arc-shaped flexible plate (205) is provided with an elastic connecting plate (208), one end of which is connected to the side wall of the arc-shaped bottom plate (201).

5. The concrete shrinkage test apparatus according to claim 1, characterized in that, The arc-shaped base plate (201) is provided with a clamping arc plate (211) on its side wall. The arc-shaped base plate (201) and the clamping arc plate (211) are connected to each other. The arc-shaped base plate (201) is provided with a protective pad (212) inside.

6. The concrete shrinkage test apparatus according to claim 1, characterized in that, An arc-shaped connecting plate (213) is provided at one end of the arc-shaped base plate (201), and an adjusting push plate (214) is provided at one end of the arc-shaped connecting plate (213). The adjusting push plate (214) is an L-shaped plate.

7. A concrete shrinkage test apparatus according to claim 2, characterized in that, The side wall of the limiting slide plate (204) is provided with a guide slider (210), and the inside of the limiting slide groove (203) is provided with a guide groove (209). The guide slider (210) is slidably sleeved in the guide groove (209).

8. The concrete shrinkage test apparatus according to claim 1, characterized in that, The base (101) is provided with a limiting bracket (103) on the top, and the measuring pin (4) is installed inside the limiting bracket (103). One end of the measuring pin (4) is in contact with one end of the measuring rod of the dial indicator (105).

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