Tension test device for detecting bonding strength of concrete block
The tensile testing device, which connects a horizontal hydraulic cylinder to a fixed hinge support, solves the applicability problem of existing technologies for testing large-volume concrete blocks, achieving accuracy and multiple uses.
Patent Information
- Application Number
- CN202423246761.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing tensile testing machines are not suitable for testing the bond strength of large concrete blocks, and they are prone to causing the concrete blocks to break under the clamp type, making it difficult to measure the accurate tensile strength.
A horizontal hydraulic cylinder is used to connect the concrete block to a fixed hinge support. The horizontal hydraulic cylinder is driven by the control cabinet to conduct a horizontal tensile test. The lifting lug is embedded in the concrete block to increase rigidity, and a roller assembly is set at the bottom of the support to reduce friction.
It enables effective testing of large-volume concrete blocks, enhances tensile strength, prevents breakage, ensures the accuracy of test results, and supports multiple uses.
Smart Images
Figure CN223742190U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tension test equipment technical field especially a kind of tension test device of the detection of concrete block bonding strength. BACKGROUND
[0002] Tension testing machine is also named universal material testing machine, which is a commonly used material mechanics testing equipment. With the development of construction engineering industry, the detection and testing technology of related performance of concrete are also continuously improved. Concrete bonding tensile strength refers to the maximum tensile force borne by concrete block from bonding when axial pressure is applied to concrete block after two concrete blocks are bonded by bonding agent, and the stress value obtained by dividing the entire bonding area by MPa.
[0003] The concrete block bonding strength competition held in the industry is to let players use prepared bonding agent to bond two concrete blocks, and then separate them after shaping by applying tension. Since the concrete blocks used in the competition are the same, the bonding area is the same, and only the maximum tension displayed on tension testing machine of each group needs to be compared to determine the winner or loser.
[0004] At present, the structure of most tension testing machines is not suitable for concrete block bonding strength competition, and most of the tension testing machines that meet the requirements for detecting concrete block bonding strength are vertical structure tension testing machines: concrete blocks are clamped by upper and lower clamps, and then tension is applied. The vertical structure tension testing machine has the following problems:
[0005] (1) For concrete blocks with larger volume, it is difficult to place them on the clamp:
[0006] (2) The clamp is small, and it is difficult to clamp concrete blocks with larger volume;
[0007] (3) The stiffness of concrete block is small, and under the current clamp type, it may cause the concrete block to be scattered and broken, so that the tensile strength of the bonding place is difficult to measure.
[0008] In summary, the vertical structure tension testing machine can only be used for testing concrete blocks with smaller volume, and it is difficult to be applied to concrete blocks with larger volume. INVENTION CONTENTS
[0009] The technical problem to be solved by the utility model is to provide a tension test device for detecting the bonding strength of concrete blocks in view of the above problems.
[0010] The technical solution adopted by the utility model is: a tension test device for detecting the bonding strength of concrete blocks, comprising:
[0011] A support;
[0012] A horizontal hydraulic cylinder is arranged on the support, and an output end of the horizontal hydraulic cylinder is connected with a lifting lug through a lifting shaft.
[0013] A fixed hinge support is arranged on the support, and the fixed hinge support is connected with the lifting lug through the lifting shaft.
[0014] A control cabinet is arranged on the support, and the control cabinet is used for controlling opening and closing of the horizontal hydraulic cylinder.
[0015] Through the above technical means, the horizontal hydraulic cylinder is connected with a first test concrete block through a lifting lug, the fixed hinge support is connected with a second test concrete block through a lifting lug, the first test concrete block and the second test concrete block are bonded through a bonding agent, and the horizontal hydraulic cylinder is driven by the control cabinet, so that the horizontal hydraulic cylinder is turned to horizontal for tension test, and a concrete block with a large volume can be tested.
[0016] In some embodiments, the lifting lug is connected with the corresponding concrete block in a buried manner, the lifting lug on the horizontal hydraulic cylinder is buried in the first test concrete block, and the lifting lug on the fixed hinge support is buried in the second test concrete block.
[0017] In some embodiments, the support is provided with a roller assembly located at the bottom of the first test concrete block.
[0018] In some embodiments, a stroke sensor and a load sensor are arranged in the horizontal hydraulic cylinder, and the stroke sensor and the load sensor can transmit acquired information to the control cabinet.
[0019] In some embodiments, the horizontal hydraulic cylinder adopts a cylinder-pump integrated structure.
[0020] The beneficial effects of the utility model are as follows:
[0021] 1. One test concrete block is connected with the horizontal hydraulic cylinder and the fixed hinge support respectively, the two test concrete blocks are bonded through a bonding agent, the horizontal hydraulic cylinder is driven by the control cabinet for tension test, the horizontal structure of the test for detecting the bonding strength of the concrete block is turned by the horizontal hydraulic cylinder, and thus the concrete block with a large volume can be tested, so that the tension test device can be better applied to the concrete block bonding strength competition.
[0022] 2. The connection between the lifting lug and the corresponding test concrete block is embedded. The lifting lug is embedded into the concrete block during the concrete block pouring process, making it part of the concrete block. Embedding the lifting lug into the concrete block can increase the rigidity of the concrete block, improve the tensile strength of the concrete block itself, and prevent the concrete block from breaking before the bond joint breaks, which would make it difficult to test the tensile strength of the bond joint of the concrete block.
[0023] 3. By setting a roller assembly at the bottom of the first test concrete block on the support, the friction between the first test concrete block and the support plane is reduced, the wear on the first test concrete block during the test is reduced, and the concrete block can be reused multiple times during the test. Attached Figure Description
[0024] Fig. 1 This is a front view structural diagram of this application.
[0025] Fig. 2 This is a top view of the structure of this application.
[0026] Fig. 3 This is a schematic diagram of the axonal structure of this application.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Horizontal hydraulic cylinder; 2. Bracket; 3. Fixed hinge support; 4. Lifting shaft; 5. Lifting lug; 6. Roller assembly.
[0029] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.
[0030] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.
[0031] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation
[0032] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.
[0033] Example 1:
[0034] Combination Figs. 1 to 3As shown, the embodiment is a tension test device for detecting the bonding strength of concrete blocks, which comprises a support 2, a horizontal hydraulic cylinder 1, a fixed hinge support 3 and a control cabinet. The support 2 is provided with the horizontal hydraulic cylinder 1 at one end, and the support 2 is welded with the fixed hinge support 3 at the other end. The output end of the horizontal hydraulic cylinder 1 faces the fixed hinge support 3. The horizontal hydraulic cylinder 1 is connected with a lifting lug 5 through a lifting shaft 4, and the fixed hinge support 3 is connected with a lifting lug 5 through a lifting shaft 4. The lifting lug 5 of the horizontal hydraulic cylinder 1 is connected with a first test concrete block, and the lifting lug 5 of the fixed hinge support 3 is connected with a second test concrete block. The first test concrete block and the second test concrete block are bonded by a bonding agent. The support 2 is provided with a control cabinet adjacent to the side, and the control cabinet is used to control the opening and closing of the horizontal hydraulic cylinder 1.
[0035] By adopting the support 2, the horizontal hydraulic cylinder 1 and the fixed hinge support 3, the tension test for detecting the bonding strength of concrete blocks is changed from vertical structure to horizontal structure, and the test on the concrete blocks with large volume can be realized.
[0036] In some embodiments, the lifting lug 5 is connected with the first test concrete block and the second test concrete block in a buried manner. Specifically, when the concrete block is poured, the lifting lug 5 on the horizontal hydraulic cylinder 1 is buried in the first test concrete block, and the lifting lug 5 on the fixed hinge support 3 is buried in the second test concrete block, so that the lifting lug 5 becomes a part of the corresponding concrete block. By burying the lifting lug 5 in the corresponding concrete block, the stiffness of the corresponding concrete block can be significantly increased, the tensile strength of the concrete block itself can be greatly improved, the breaking of the concrete block itself before the bonding is prevented, and the accuracy of the test results is ensured.
[0037] Further, the support 2 is provided with a roller assembly 6 located at the bottom of the first test concrete block. The roller assembly 6 is used to reduce the friction coefficient between the first test concrete block and the plane of the support 2, thereby reducing the loss of the first test concrete block during the test, and realizing the multiple use in the test.
[0038] Further, the horizontal hydraulic cylinder 1 is provided with a sensor and a load sensor. The travel sensor and the load sensor can transmit the acquired information to the control cabinet.
[0039] Further, the horizontal hydraulic cylinder 1 adopts a cylinder-pump integrated structure, which can save a certain space.
[0040] Embodiment two:
[0041] The embodiment is a use method of a tension test device for detecting the bonding strength of concrete blocks, which takes the concrete block bonding strength competition as an example, and comprises the following steps:
[0042] Before using the tension testing device, first, the first test concrete block and the second test concrete block are placed on the support 2 by auxiliary equipment such as a forklift, the lifting lug 5 on the first test concrete block is connected with the lifting head of the horizontal hydraulic cylinder 1 by the lifting shaft 4, and the lifting lug 5 on the second test concrete block is connected with the fixed hinge support 3 by the lifting shaft 4. The distance between the first test concrete block and the second test concrete block is adjusted by driving the horizontal hydraulic cylinder 1 through the control cabinet until the appropriate position.
[0043] The first test concrete block and the second test concrete block are bonded by the participants using a bonding agent. After bonding and shaping, the horizontal hydraulic cylinder 1 is controlled to perform the pull-off operation by the control cabinet, so that the hydraulic cylinder extends and retracts at a speed of 5 mm / min, and a maximum tension of 1000 kN can be generated to perform the pull-off test on the bonding part of the concrete block. Under the action of the tension of the horizontal hydraulic cylinder 1, the first test concrete block moves relatively on the roller assembly 6 until the bonding part is completely disconnected.
[0044] At the same time, the stroke sensor and the load sensor arranged in the horizontal hydraulic cylinder 1 transmit the obtained information to the control cabinet, and the control cabinet reads and records the maximum tension generated during the pull-off process. The horizontal hydraulic cylinder 1 is controlled by the on-site operation control cabinet to generate a thrust force, and the corresponding concrete block is adjusted to the appropriate position for the next comparison. The winners and losers of the competition are determined by comparing the size of the tension of each group.
[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A tension test device for detecting the bonding strength of a concrete block, characterized by, The utility model relates to a test device for testing the performance of the fixed hinge support of the test concrete block, which comprises the following parts: A support (2); A horizontal hydraulic cylinder (1) is arranged on the support (2), and the output end of the horizontal hydraulic cylinder (1) is connected with a lifting lug (5) through a lifting shaft (4), and the horizontal hydraulic cylinder (1) is connected with a first test concrete block through the lifting lug (5); A fixed hinge support (3) is arranged on the support (2), and the fixed hinge support (3) is connected with the lifting lug (5) through the lifting shaft (4), and the fixed hinge support (3) is connected with a second test concrete block through the lifting lug (5), and the first test concrete block and the second test concrete block are bonded through an adhesive; A control cabinet is arranged on the side of the support (2), and the control cabinet is used for controlling the opening and closing of the horizontal hydraulic cylinder (1).
2. The tension test device for testing the bonding strength of concrete blocks according to claim 1, characterized in that: The lifting lug (5) is connected with the corresponding concrete block in a buried mode, the lifting lug (5) on the horizontal hydraulic cylinder (1) is buried in the first test concrete block, and the lifting lug (5) on the fixed hinge support (3) is buried in the second test concrete block.
3. The tension test device for testing the bonding strength of concrete blocks according to claim 1, wherein: A roller assembly (6) is arranged on the support (2) and located at the bottom of the first test concrete block.
4. The tension test device for testing the bonding strength of concrete blocks according to claim 1, wherein: A stroke sensor and a load sensor are arranged in the horizontal hydraulic cylinder (1), and the stroke sensor and the load sensor can transmit the acquired information to the control cabinet.
5. The tension testing device of claim 1, wherein: The horizontal hydraulic cylinder (1) adopts a cylinder-pump integrated structure.