Damping pedestal for assisting in concrete autogenous volume deformation test

By designing a shock absorbing pedestal including a bearing plate, fixed components and shock absorbing support, the problem of the self-generating volume deformation test of concrete is easily affected by vibration, the accuracy of the test data and the stability of the test pieces are achieved, the use process is simplified and the specimen is placed beautifully.

CN222825538UActive Publication Date: 2025-05-02NORTHWEST ENGINEERING CORPORATION LIMITED
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Patent Information

Application Number
CN202420496920.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-14
Publication Date
2025-05-02
Estimated Expiration
2034-03-14

AI Technical Summary

Technical Problem

The self-generating volume deformation test of concrete is susceptible to laboratory vibration and impact, resulting in large deviations in the test results, and the long test age increases the cost of rework time, affecting the experimental progress.

Method used

A shock absorbing pedestal is designed to assist in the self-generating volume deformation test of concrete, including a bearing plate, a fixed assembly and a plurality of shock absorbing support. The shock absorbing support consists of an upper support, an elastic assembly and a lower support, which is evenly arranged on the lower surface of the bearing plate, and the fixing assembly is arranged around the outer surface of the specimen to stabilize the specimen.

Benefits of technology

Effectively prevent specimens from vibrating, impacting and pouring during the test, improve the accuracy of test data, simplify the structure and use convenience, and reduce confusion and beautiful placement of specimens.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a damping pedestal for assisting a concrete autogenous volume deformation test. The damping pedestal comprises a bearing plate, a fixing assembly and a plurality of damping supports, the multiple damping supports are evenly distributed on the lower surface of the bearing plate. A bearing groove is formed in the upper surface of the bearing plate, and one end of the concrete test piece is arranged in the bearing groove; the fixing assembly is arranged on the bearing plate and surrounds the outer surface of the concrete test piece. The damping pedestal can prevent the concrete autogenous volume deformation test piece from vibrating, impacting and even toppling over in the test period, the accuracy of test data is effectively improved, and the damping pedestal is simple in structure, convenient to use, not prone to confusion of test pieces at different engineering positions and different ages and attractive in placement.
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Description

Technical Field

[0001] The utility model discloses a shock-absorbing platform for assisting concrete autogenous volume deformation test, belonging to the technical field of engineering test auxiliary equipment. Background Art

[0002] Concrete autogenous volume deformation refers to the deformation of concrete caused by the change of density of hydration products and raw materials due to the hydration of concrete materials under constant temperature and absolute humidity. The main factors affecting the autogenous volume deformation of concrete are cement type, fly ash type, aggregate type and content, etc. Concrete autogenous volume deformation is an important indicator affecting the crack resistance of concrete. Therefore, concrete autogenous volume deformation test is of great significance to the safety and reliability research of concrete engineering.

[0003] Usually, under the conditions of constant temperature, absolute humidity and no external load, the autogenous volume deformation of concrete is calculated by testing the resistance ratio of the strain gauge buried inside the concrete specimen. Since the test age of this test is 120 to 365 days, the specimen is usually placed directly on the floor of the constant temperature room for testing, making the specimen easily affected by the vibration of other laboratory test operations and easily hit by mistake.

[0004] Since the strain gauge has a high test accuracy, when the specimen is subjected to vibration or impact, it is easy to cause large deviations in the test results. The long test age of this test leads to high rework time costs, affecting the overall experimental progress. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and proposes a shock-absorbing platform for assisting concrete autogenous volume deformation test, comprising a bearing plate, a fixing assembly and a plurality of shock-absorbing supports;

[0006] The plurality of shock-absorbing supports are evenly arranged on the lower surface of the bearing plate;

[0007] The upper surface of the bearing plate is provided with a bearing groove, and one end of the concrete specimen is arranged in the bearing groove;

[0008] The fixing assembly is arranged on the bearing plate and surrounds the outer surface of the concrete specimen.

[0009] Preferably, each shock-absorbing support includes an upper support, an elastic component and a lower support;

[0010] The upper support is fixedly arranged on the lower surface of the bearing plate;

[0011] One end of the elastic component is connected to the upper support, and the other end is connected to the lower support.

[0012] Preferably, each of the shock-absorbing supports further comprises a protective shell;

[0013] The protective shell is arranged around the outside of the elastic component;

[0014] One end of the protective shell is fixedly connected to the lower support;

[0015] The other end of the protection shell is a preset distance away from the upper support.

[0016] Preferably, the fixing assembly comprises a fixing belt and a plurality of fixing rods arranged vertically;

[0017] The plurality of fixing rods are evenly arranged around the outer circumference of the bearing groove;

[0018] One end of each of the plurality of fixing rods is detachably fixed to the upper surface of the supporting plate;

[0019] The fixing belt is annularly fixed on the plurality of fixing rods and is arranged to form a ring shape matching the bearing groove.

[0020] Preferably, the fixing belt is multiple;

[0021] The plurality of fixing belts are axially arranged on the plurality of fixing rods in sequence.

[0022] Preferably, the two ends of the fixing belt are overlapped to form a ring shape matching the bearing groove;

[0023] Buckles are arranged at the overlapping parts of the two ends of the fixing belt.

[0024] Preferably, the fixing belt is connected to the plurality of fixing rods via a hinge.

[0025] Preferably, the inner surface of the fixing belt is provided with a flexible shockproof material.

[0026] Preferably, there are multiple bearing grooves;

[0027] A plurality of the bearing grooves are evenly arranged on the upper surface of the bearing plate.

[0028] Preferably, the bearing plate, the fixing rod and the fixing belt are made of steel.

[0029] Beneficial effects: The shock-absorbing pedestal of the utility model can prevent the concrete autogenous volume deformation specimen from vibrating, colliding or even tipping over during the test, effectively improving the accuracy of the test data. The utility model has a simple structure, is easy to use, is not prone to confusion of specimens of different engineering parts and different ages, and is beautifully displayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a top view schematic diagram of an embodiment of the utility model;

[0031] Figure 2 It is a front view schematic diagram of an embodiment of the utility model.

[0032] In the figure: 101, bearing plate; 102, bearing groove; 201, shock-absorbing support; 202, protective shell; 301, concrete specimen; 302, fixing belt; 303, hinge; 304, fixing rod; 305, buckle. DETAILED DESCRIPTION

[0033] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems and devices are omitted to avoid unnecessary details that hinder the description of the present invention.

[0034] The preferred technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] A shock-absorbing pedestal for assisting concrete autogenous volume deformation test comprises a bearing plate 101, a fixing assembly and a plurality of shock-absorbing supports 201; the plurality of shock-absorbing supports 201 are evenly arranged on the lower surface of the bearing plate 101; a bearing groove 102 is arranged on the upper surface of the bearing plate 101, and one end of a concrete specimen 301 is arranged in the bearing groove 102; the fixing assembly is arranged on the bearing plate 101 and surrounds the outer surface of the concrete specimen 301.

[0036] Furthermore, there are multiple bearing grooves 102 ; the multiple bearing grooves 102 are evenly distributed on the upper surface of the bearing plate 101 .

[0037] Specifically, Figure 1-2 As shown, the shock-absorbing platform of the utility model includes a bearing plate 101, a fixing assembly and a plurality of shock-absorbing supports 201, wherein the shock-absorbing supports 201 are not less than four. Figure 1 As shown, in this embodiment, there are six shock-absorbing supports 201, which are arranged on the lower surface of the bearing plate 101 as support seats; a bearing groove 102 is arranged on the upper surface of the bearing plate 101, and one end of the concrete specimen 301 is arranged in the bearing groove 102. A fixing component is arranged on the bearing plate 101, and the fixing component is arranged around the outer periphery of the bearing groove 102 to stabilize the concrete specimen 301. It should be understood that the number of bearing grooves 102 arranged on each bearing plate 101 is adjusted according to demand, and can be multiple or one. In this embodiment, the number of bearing grooves 102 is two, and the two bearing grooves 102 are symmetrically arranged on the bearing plate 101. Each bearing groove 102 corresponds to a set of fixing components.

[0038] Specifically, in this embodiment, the length*width*height of the bearing plate 101 is 600mm*250mm*40mm, and the bearing groove 102 is a circular groove with a diameter of 155mm and a depth of 30mm; it should be understood that the shape and size of the bearing groove 102 are determined according to the specimen. In this embodiment, the concrete specimen 301 is a cylindrical specimen with a diameter of 150mm and a height of 500mm to 600mm.

[0039] Furthermore, each shock-absorbing support 201 includes an upper support, an elastic component and a lower support; the upper support is fixedly arranged on the lower surface of the bearing plate 101; one end of the elastic component is connected to the upper support, and the other end is connected to the lower support.

[0040] Specifically, in this embodiment, the shock-absorbing support 201 includes an upper support, an elastic component and a lower support, wherein the upper support and the lower support are both cast iron plates, stainless steel plates or rubber plates with a diameter of 50 mm; the elastic component is a spring, a damper or high-damping rubber, etc. Specifically, in this embodiment, the upper support and the lower support are stainless steel plates, and the elastic component is a spring. The upper support is fixedly connected to the lower surface of the bearing plate 101, and the spring is arranged between the upper support and the lower support, and its two ends are respectively connected to the upper support and the lower support. The overall height of the shock-absorbing support 201 is 40 mm.

[0041] Furthermore, each shock-absorbing support 201 also includes a protective shell 202; the protective shell 202 is arranged around the outside of the elastic component; one end of the protective shell 202 is fixedly connected to the lower support; and the other end of the protective shell 202 is a preset distance away from the upper support.

[0042] Specifically, in this embodiment, the shock-absorbing support 201 also includes a protective shell 202, and the protective shell 202 is arranged around the outside of the spring. Specifically, the protective shell 202 is fixedly connected to the lower support and has a preset distance with the upper support. The preset distance is the shock-absorbing stroke. Specifically, the preset distance in this embodiment is 15 mm. The protective shell 202 in the utility model can be a complete sleeve, or two or more arc-shaped plates, or can be formed by a plurality of rods.

[0043] Furthermore, the fixing assembly includes a fixing belt 302 and a plurality of fixing rods 304 arranged vertically; the plurality of fixing rods 304 are evenly arranged around the outer periphery of the bearing groove 102; one end of the plurality of fixing rods 304 is removably fixed to the upper surface of the bearing plate 101; the fixing belt 302 is circumferentially fixed on the plurality of fixing rods 304, and is arranged to form a ring shape matching the bearing groove 102.

[0044] Specifically, the fixing assembly in this embodiment includes a fixing belt 302 and a plurality of fixing rods 304 vertically arranged on the bearing plate 101, and the fixing rods 304 and the fixing belt 302 form a columnar fence; wherein one end of the fixing rod 304 is detachably connected to the bearing plate 101, and specifically, this embodiment is fixed by bolts. The fixing assembly prevents the concrete specimen 301 from tipping over under large vibrations such as earthquakes. The fixing rod 304 of the utility model is made of solid hard material and has high strength.

[0045] Specifically, in this embodiment, there are three fixing rods 304, and one end of the three fixing rods 304 is detachably connected to the supporting plate 101. Figure 1-2 As shown, in this embodiment, the fixing rod 304 is a columnar material with a diameter of 8 mm and a length of 600 mm. The fixing belt 302 has a width of 20 mm and a thickness of 3 mm, and the diameter of the ring formed by the fixing belt 302 is slightly larger than the diameter of the concrete specimen 301.

[0046] Furthermore, there are multiple fixing belts 302 ; the multiple fixing belts 302 are axially arranged on the multiple fixing rods 304 in sequence.

[0047] Specifically, Figure 2 As shown, in this embodiment, there are three fixing belts 302 , and the axes are arranged at different elevations of the fixing rod 304 .

[0048] Furthermore, two ends of the fixing belt 302 are overlapped to form a ring that matches the bearing groove 102 ; buckles 305 are provided at the overlapped positions of the two ends of the fixing belt 302 .

[0049] Specifically, two ends of the fixing belt 302 are overlapped to form a ring that matches the bearing groove 102 ; buckles 305 are provided at the overlapped ends of the fixing belt 302 .

[0050] Furthermore, the fixing belt 302 is connected to a plurality of fixing rods 304 via a hinge 303 .

[0051] In the present invention, the fixing belt 302 is fixedly connected to the fixing rod 304. In this embodiment, the fixing belt 302 is connected to at least one fixing rod 304 via a hinge 303.

[0052] Furthermore, the inner surface of the fixing belt 302 is provided with a flexible shockproof material.

[0053] In order to further avoid the influence of vibration on the concrete specimen 301, a flexible shock-proof material is provided on the surface of the fixing belt 302 close to the concrete specimen 301. The flexible shock-proof material can be selected from plastic foam, EVA material, foam material or foam rubber, etc. Specifically, in this embodiment, plastic foam is selected. In this embodiment, the plastic foam is coated on the surface of the fixing belt 302, so that the inner and outer surfaces of the fixing belt 302 are provided with shock-proof materials, so that the shock absorption effect is better.

[0054] Furthermore, the bearing plate 101 , the fixing rod 304 and the fixing belt 302 are made of steel.

[0055] In the present invention, the bearing plate 101 can be made of steel, cast iron or composite materials, etc. Specifically, in this embodiment, stainless steel is selected as the material for making the bearing plate 101, the fixing rod 304 and the fixing rod 304.

[0056] Specifically, when the shock-absorbing pedestal in this embodiment is used, the first fixing rod 304 is fixed on the bearing plate 101, and the first fixing rod 304 is connected to the fixing belt 302 through the hinge 303, and the other two second fixing rods 304 and the fixing belt 302 respectively form two arc-shaped guardrails, and the first fixing rod 304 is used as the axis to rotate the two guardrails to open the cavity formed by the fixed assembly; the concrete specimen 301 is placed in the bearing groove 102, and then the two arc-shaped guardrails are rotated to close, and the buckle 305 of the fixing belt 302 between the two arc-shaped guardrails is buckled to fix the two arc-shaped guardrails. The setting of the concrete specimen 301 is completed, and the pedestal cannot be moved during the test.

[0057] When the shock-absorbing pedestal in another embodiment of the utility model is used, first, the concrete specimen 301 is placed in the bearing groove 102 on the bearing plate 101 without the fixing assembly installed, and then the fixing assembly is arranged around the outer periphery of the concrete specimen 301, and then the fixing assembly is fixedly connected to the bearing plate 101 to complete the setting of the concrete specimen 301.

[0058] The shock-absorbing pedestal of the utility model can prevent the concrete self-volume deformation specimen from vibrating, colliding or even tipping over during the test, effectively improving the accuracy of the test data. The utility model has a simple structure, is easy to use, is not prone to confusion of specimens of different engineering parts and different ages, and has an aesthetically pleasing display.

[0059] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A shock-absorbing pedestal for assisting concrete autogenous volume deformation test, characterized in that: It includes a load-bearing plate, a fixing assembly and a plurality of shock-absorbing supports; The plurality of shock-absorbing supports are evenly arranged on the lower surface of the bearing plate; The upper surface of the bearing plate is provided with a bearing groove, and one end of the concrete specimen is arranged in the bearing groove; The fixing assembly is arranged on the bearing plate and surrounds the outer surface of the concrete specimen.

2. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 1, characterized in that: Each shock-absorbing support includes an upper support, an elastic component and a lower support; The upper support is fixedly arranged on the lower surface of the bearing plate; One end of the elastic component is connected to the upper support, and the other end is connected to the lower support.

3. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 2, characterized in that: Each of the shock-absorbing supports also includes a protective shell; The protective shell is arranged around the outside of the elastic component; One end of the protective shell is fixedly connected to the lower support; The other end of the protection shell is a preset distance away from the upper support.

4. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 1, characterized in that: The fixing assembly includes a fixing belt and a plurality of fixing rods arranged vertically; The plurality of fixing rods are evenly arranged around the outer circumference of the bearing groove; One end of each of the plurality of fixing rods is detachably fixed to the upper surface of the supporting plate; The fixing belt is annularly fixed on the plurality of fixing rods and is arranged to form a ring shape matching the bearing groove.

5. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 4, characterized in that: There are multiple fixing belts; The plurality of fixing belts are axially arranged on the plurality of fixing rods in sequence.

6. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 4, characterized in that: The two ends of the fixing belt are overlapped to form a ring shape matching the bearing groove; Buckles are arranged at the overlapping parts of the two ends of the fixing belt.

7. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 6, characterized in that: The fixing belt is connected to the plurality of fixing rods via a hinge.

8. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 4, characterized in that: The inner surface of the fixing belt is provided with a flexible shockproof material.

9. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 1, characterized in that: There are multiple bearing grooves; A plurality of the bearing grooves are evenly arranged on the upper surface of the bearing plate.

10. The shock-absorbing pedestal for assisting concrete autogenous volume deformation test according to claim 4, characterized in that: The bearing plate, the fixing rod and the fixing belt are made of steel.