Self-adaptive clamp for testing strength of concrete

Abstract

The utility model provides a self-adaptive clamp for testing the strength of concrete, and belongs to the field of testing engineering. The clamp comprises a first clamping arm, a second clamping arm, a fixing assembly and a displacement sensor, the first clamping arm is arranged above the second clamping arm in parallel at intervals, a first clamping groove is formed in one end of the first clamping arm, a mounting groove is formed in the other end of the first clamping arm, a second clamping groove is formed in one end of the second clamping arm, and a placement table is arranged at the other end of the second clamping arm; one end of the displacement sensor is arranged in the mounting groove, the other end of the displacement sensor is arranged on the placing table, the two first clamping arms and the two second clamping arms are arranged, the two first clamping grooves are oppositely arranged, the two second clamping grooves are oppositely arranged, and the fixing assembly is used for fixing the two first clamping arms or fixing the two second clamping arms. By adopting the self-adaptive clamp for testing the strength of the concrete, provided by the embodiment of the utility model, the problems of complicated operation and lower testing efficiency in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of testing engineering, in particular to an adaptive clamp for concrete strength testing. Background Art

[0002] Concrete refers to a mixture of binder, granular aggregate, water, and chemical admixtures and mineral admixtures that need to be added in appropriate proportions. It has the characteristics of high compressive strength, good durability, and a wide range of strength grades. In order to ensure that the concrete strength is qualified when the building is put into use, it is necessary to conduct strength tests on the concrete that makes up the building.

[0003] In the prior art, most testing devices require complicated work for fixing concrete blocks, and after the strength test of the concrete blocks, additional equipment is required to measure the deformation of the concrete, which results in complicated operation and low testing efficiency.

[0004] In the prior art, the fixture for concrete strength testing usually only has the function of clamping concrete, but lacks the function of measuring the corresponding parameters of concrete after deformation, which leads to complicated operation and low test efficiency. Utility Model Content

[0005] The embodiment of the utility model provides an adaptive fixture for concrete strength testing, which can solve the problems of complex operation and low testing efficiency in the prior art. The technical solution is as follows:

[0006] An adaptive fixture for concrete strength testing comprises: a first clamping arm, a second clamping arm, a fixing assembly and a displacement sensor.

[0007] The first clamping arm and the second clamping arm are arranged in the same direction, the first clamping arm is arranged in parallel and spaced apart above the second clamping arm, one end of the first clamping arm is provided with a first clamping groove, and the other end is provided with a mounting groove, one end of the second clamping arm is provided with a second clamping groove, and the other end is provided with a placement table, one end of the displacement sensor is provided in the mounting groove, and the other end is provided on the placement table, two of the first clamping arm and two of the second clamping arm are provided, the two first clamping grooves are arranged opposite to each other, and the two second clamping grooves are arranged opposite to each other, and the fixing component is used to fix the two first clamping arms or the two second clamping arms.

[0008] Optionally, the fixing assembly includes a transverse connecting shaft, a blocking nut and a butterfly nut, a transverse connecting hole is opened at one end of the two first clamping arms close to each other, the transverse connecting shaft is passed through the transverse connecting hole, the blocking nut is arranged at one end of the transverse connecting shaft, and the butterfly nut is threadedly matched with the other end of the transverse connecting shaft.

[0009] Optionally, a first spring is arranged between the butterfly nut and the first clamping arm, and a second spring is arranged between the blocking nut and the first clamping arm.

[0010] Optionally, a transverse sleeve is provided in the transverse connecting hole, and the transverse connecting shaft is slidably connected to the transverse sleeve.

[0011] Optionally, a longitudinal connecting shaft is further included, and a longitudinal mounting hole is provided at one end of the first clamping arm close to the displacement sensor, one end of the longitudinal connecting shaft is vertically arranged on the second clamping arm, and the other end is slidably inserted into the longitudinal mounting hole.

[0012] Optionally, a longitudinal sleeve is provided in the longitudinal mounting hole, and the longitudinal connecting shaft is slidably connected to the longitudinal sleeve.

[0013] Optionally, the end of the first clamping arm away from the displacement sensor is also provided with the longitudinal mounting hole to cooperate with the longitudinal connecting shaft.

[0014] Optionally, a ceramic fixing plate is provided in the mounting groove, and one end of the displacement sensor is clamped and fixed on the ceramic fixing plate.

[0015] Optionally, a supporting screw is provided at the bottom of the second clamping arm.

[0016] Optionally, the first clamping arm and the second clamping arm are 40Cr alloy structural steel parts.

[0017] The beneficial effects brought by the technical solution provided by the embodiment of the utility model include at least:

[0018] An adaptive clamp for concrete strength testing provided by an embodiment of the utility model places a concrete block in a first clamping groove and a second clamping groove, and clamps and fixes the concrete block between two first clamping arms and two second clamping arms through a fixing assembly, and a displacement sensor is arranged at the end of the clamp. When a test pressure is applied to the concrete block from the top of the clamp, the first clamping arm moves toward the second clamping arm due to the compression of the concrete block, thereby driving the displacement sensor to move, and the data obtained by the displacement sensor is the deformation variable parameter of the concrete block under the test pressure. By setting this structure, the corresponding deformation variable parameter data can be directly obtained after each pressure test on the concrete block is completed, and there is no need to set up a separate device for data measurement, thereby saving test time and improving test efficiency, thereby effectively solving the problems of complex operation and low test efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the first clamping groove and the second clamping groove provided in an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of one end of the clamp close to the displacement sensor provided by an embodiment of the utility model.

[0023] In the figure: 1-first clamping arm; 11-first clamping groove; 12-mounting groove; 13-transverse connecting hole; 14-longitudinal mounting hole; 2-second clamping arm; 21-second clamping groove; 22-placing table; 3-fixing assembly; 31-transverse connecting shaft; 32-blocking nut; 33-butterfly nut; 4-displacement sensor; 51-first spring; 52-second spring; 61-transverse bushing; 62-longitudinal bushing; 7-longitudinal connecting shaft; 8-ceramic fixing plate; 9-support screw. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model; Figure 2 It is a schematic diagram of the structure of the first clamping groove and the second clamping groove provided in an embodiment of the utility model; Figure 3 Schematic diagram of the structure of the clamp provided by the embodiment of the utility model close to the end of the displacement sensor. Figures 1 to 3An adaptive fixture for concrete strength testing is shown, comprising: a first clamping arm 1, a second clamping arm 2, a fixing assembly 3 and a displacement sensor 4, wherein the first clamping arm 1 and the second clamping arm 2 are arranged in the same direction, the first clamping arm 1 is arranged in parallel and spaced apart above the second clamping arm 2, one end of the first clamping arm 1 is provided with a first clamping groove 11, and the other end is provided with a mounting groove 12, one end of the second clamping arm 2 is provided with a second clamping groove 21, and the other end is provided with a placement table 22, one end of the displacement sensor 4 is provided in the mounting groove 12, and the other end is provided on the placement table 22, the first clamping arm 1 and the second clamping arm 2 are both provided with two, the two first clamping grooves 11 are arranged opposite to each other, and the two second clamping grooves 21 are arranged opposite to each other, and the fixing assembly 3 is used to fix the two first clamping arms 1 or the two second clamping arms 2.

[0026] For example, in the embodiment of the utility model, the placement table 22 provides bottom support for the displacement sensor 4, and the mounting groove 12 clamps and fixes one end of the displacement sensor. The two first clamping grooves 11 are arranged opposite to each other, and the two second clamping grooves 21 are arranged opposite to each other. The shapes of the first clamping grooves 11 and the second clamping grooves 21 match the shape of the concrete block. A three-dimensional space is formed between the two first clamping grooves 11 and the two second clamping grooves 21. The manufactured concrete block is placed in the three-dimensional space. The fixing component 3 is arranged on a side close to the first clamping grooves 11 and the second clamping grooves 21. The two first clamping arms 1 and the two second clamping arms 2 are fixed by the fixing component 3, so that the concrete block is clamped and fixed in the three-dimensional space, thereby facilitating the subsequent pressure test of the concrete block. Since the first clamping arm 1 and the second clamping arm 2 are clamped and fixed on the concrete block at intervals, when the concrete block is subjected to pressure from above, the concrete block is deformed, so that the spacing between the first clamping arm 1 and the second clamping arm 2 changes, and this spacing change can be recorded as a deformation variable parameter of the concrete. When the distance between the first clamping arm 1 and the second clamping arm 2 changes, the displacement sensor 4 located on the other side of the clamp can measure the displacement of the first clamping arm 1 toward the second clamping arm 2, so as to calculate the concrete deformation parameters. By setting the structure in the clamp, each time the concrete block pressure test is performed, the deformation parameters can be directly measured by the displacement sensor 4, thereby improving the test efficiency.

[0027] The utility model provides an adaptive fixture for concrete strength testing, wherein a concrete block is placed in a first clamping groove 11 and a second clamping groove 21, and the concrete block is clamped and fixed between two first clamping arms 1 and two second clamping arms 2 by a fixing assembly 3, and a displacement sensor 4 is arranged at the end of the fixture. When a test pressure is applied to the concrete block from the top of the fixture, the first clamping arm 1 moves toward the second clamping arm 2 due to the compression of the concrete block, thereby driving the displacement sensor 4 to move, and the data obtained by the displacement sensor 4 is the deformation variable parameter of the concrete block under the test pressure. By setting this structure, the corresponding deformation variable parameter data can be directly obtained after each pressure test on the concrete block is completed, without the need to set up a separate device for data measurement, and without the need to perform additional deformation size measurement work, which is convenient and fast, thereby saving test time and improving test efficiency, thereby effectively solving the problems of complex operation and low test efficiency in the prior art.

[0028] Optionally, the fixing assembly 3 includes a transverse connecting shaft 31, a blocking nut 32 and a butterfly nut 33. A transverse connecting hole 13 is opened at one end of the two first clamping arms 1 that are close to each other. The transverse connecting shaft 31 is passed through the transverse connecting hole 13. The blocking nut 32 is arranged at one end of the transverse connecting shaft 31, and the butterfly nut 33 is threadedly engaged with the other end of the transverse connecting shaft 31.

[0029] For example, in the embodiment of the utility model, after placing the concrete block between the two first clamping arms 1 and the two second clamping arms 2, the butterfly nut 33 is controlled to rotate so that the distance between the butterfly nut 33 and the blocking nut 32 is reduced, so that the two first clamping arms 1 are close to each other and the concrete block is clamped and fixed between the two first clamping grooves 11. Correspondingly, a transverse connecting hole 13 is also provided at one end of the second clamping arms 2 that are close to each other. By setting the fixing component 3 to this structure, the operation is convenient, and the operator only needs to rotate and control the butterfly nut 33 to complete the clamping and fixing of the concrete block, thereby improving the convenience of operation of the clamp.

[0030] Optionally, a first spring 51 is provided between the butterfly nut 33 and the first clamping arm 1 , and a second spring 52 is provided between the blocking nut 32 and the first clamping arm 1 .

[0031] For example, in the embodiment of the utility model, on the transverse connecting shaft 31, only one end close to the butterfly nut 33 is provided with a thread to cooperate with the butterfly nut 33, and the other part is a bare rod, so that the transverse connecting shaft can be slidably inserted into the transverse connecting hole 13. By setting the first spring 51 and the second spring 52, when the butterfly nut 33 is operated to rotate, the fixing assembly 3 can adapt to the size of the concrete block to clamp quickly and stably, saving time, thereby further improving the test efficiency. At the same time, after the concrete block is pressure tested, the concrete block will be deformed, thereby generating a force on the clamp. By setting the first spring 51 and the second spring 52, the force of the concrete block on the clamp can be buffered, thereby ensuring the physical structural stability of the clamp and improving the service life of the clamp.

[0032] Optionally, a transverse shaft sleeve 61 is disposed in the transverse connecting hole 13 , and the transverse connecting shaft 31 is slidably connected to the transverse shaft sleeve 61 .

[0033] Exemplarily, in the embodiment of the utility model, by providing the transverse bushing 61, the friction force when the transverse connecting shaft 31 slides can be reduced, preventing the friction force from affecting the test data of the displacement sensor 4, thereby improving the test accuracy of the fixture.

[0034] Optionally, a longitudinal connecting shaft 7 is further included. A longitudinal mounting hole 14 is provided at one end of the first clamping arm 1 close to the displacement sensor 4. One end of the longitudinal connecting shaft 7 is vertically arranged on the second clamping arm 2, and the other end is slidably arranged in the longitudinal mounting hole 14.

[0035] Illustratively, in the embodiment of the utility model, by providing the longitudinal mounting hole 14 and the longitudinal connecting shaft 7 for cooperation, during the pressure test, a guiding effect is provided for the first clamping arm 1 to approach the second clamping arm 2, and its movement range can be limited to avoid misalignment or horizontal displacement, thereby ensuring the accuracy of the test data of the displacement sensor 4 and further improving the test accuracy of the fixture.

[0036] Optionally, a longitudinal sleeve 62 is disposed in the longitudinal mounting hole 14 , and the longitudinal connecting shaft 7 is slidably connected to the longitudinal sleeve 62 .

[0037] Exemplarily, in the embodiment of the utility model, by providing the longitudinal sleeve 62, the friction force when the longitudinal connecting shaft 7 slides can be reduced, preventing the friction force from affecting the test data of the displacement sensor 4, thereby further improving the test accuracy of the fixture.

[0038] Optionally, a longitudinal mounting hole 14 is also provided at one end of the first clamping arm 1 away from the displacement sensor 4 to cooperate with the longitudinal connecting shaft 7 .

[0039] Exemplarily, in the embodiment of the utility model, since the clamp has a certain length and is only provided with longitudinal mounting holes 14 and longitudinal connecting shafts 7 at both ends, the overall structural strength is relatively low. By also providing longitudinal mounting holes 14 and longitudinal connecting shafts 7 at the end of the first clamping arm 1 away from the displacement sensor 4, the structural strength of the clamp can be further improved, and a guiding effect can be provided for the first clamping arm 1 to approach the second clamping arm 2, thereby ensuring the accuracy of the test data of the displacement sensor 4 and further improving the test accuracy of the clamp.

[0040] Optionally, a ceramic fixing plate 8 is disposed in the mounting groove 12 , and one end of the displacement sensor 4 is clamped and fixed on the ceramic fixing plate 8 .

[0041] For example, in the embodiment of the utility model, since the first clamping arm 1 and the second clamping arm 2 are usually made of metal material, when the present clamp is used in a high temperature environment, when the high temperature is transmitted along the first clamping arm 1 to the mounting groove 12, under the protection of the ceramic fixing plate 8, the displacement sensor 4 can work normally, avoiding failure of the displacement sensor 4 due to high temperature, thereby ensuring the accuracy of the measurement data and further improving the test accuracy of the present clamp.

[0042] Optionally, a supporting screw 9 is provided at the bottom of the second clamping arm 2 .

[0043] Illustratively, in an embodiment of the utility model, the support screw 9 provides bottom support for the clamp, and a plurality of threaded holes matching the support screw 9 are provided at the bottom of the second clamping arm 2, and a plurality of corresponding support screws 9 are also provided. Through the cooperation of the support screw 9 and the threaded hole, the overall height of the device can be adjusted, which is convenient for subsequent related tests. By providing the support screw 9, the operational convenience of the clamp is further improved.

[0044] Optionally, the first clamping arm 1 and the second clamping arm 2 are 40Cr alloy structural steel parts.

[0045] For example, in the embodiment of the utility model, 40Cr alloy structural steel has excellent mechanical properties, and its tensile strength and yield strength are high. After proper heat treatment, it can obtain good toughness, plasticity and wear resistance. It is easy to carry out heat treatment, forging, welding and other processing techniques, and has good cutting performance. It also has a certain high temperature resistance, so that the clamp can be used normally under high temperature conditions.

[0046] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive fixture for concrete strength testing, characterized in that: include: A first clamping arm (1), a second clamping arm (2), a fixing assembly (3) and a displacement sensor (4), The first clamping arm (1) and the second clamping arm (2) are arranged in the same direction. The first clamping arm (1) is arranged above the second clamping arm (2) in parallel and at intervals. One end of the first clamping arm (1) is provided with a first clamping groove (11), and the other end is provided with a mounting groove (12). One end of the second clamping arm (2) is provided with a second clamping groove (21), and the other end is provided with a placement table (22). One end of the displacement sensor (4) is arranged in the mounting groove (12), and the other end is arranged on the placement table (22). The first clamping arm (1) and the second clamping arm (2) are each provided with two, the two first clamping grooves (11) are arranged opposite to each other, and the two second clamping grooves (21) are arranged opposite to each other. The fixing component (3) is used to fix the two first clamping arms (1) or the two second clamping arms (2). The fixing assembly (3) comprises a transverse connecting shaft (31), a blocking nut (32) and a butterfly nut (33); a transverse connecting hole (13) is provided at one end of the two first clamping arms (1) close to each other; the transverse connecting shaft (31) is inserted into the transverse connecting hole (13); the blocking nut (32) is arranged at one end of the transverse connecting shaft (31); the butterfly nut (33) is threadedly engaged with the other end of the transverse connecting shaft (31); a first spring (51) is arranged between the butterfly nut (33) and the first clamping arm (1); and a second spring (52) is arranged between the blocking nut (32) and the first clamping arm (1), so that the fixing assembly (3) can adapt to the size of the concrete block to quickly and stably clamp the concrete block.

2. The adaptive fixture for concrete strength testing according to claim 1, characterized in that: A transverse shaft sleeve (61) is arranged in the transverse connecting hole (13), and the transverse connecting shaft (31) is slidably connected to the transverse shaft sleeve (61).

3. The adaptive fixture for concrete strength testing according to claim 1, characterized in that: It also comprises a longitudinal connecting shaft (7), and a longitudinal mounting hole (14) is provided at one end of the first clamping arm (1) close to the displacement sensor (4); one end of the longitudinal connecting shaft (7) is vertically arranged on the second clamping arm (2), and the other end is slidably inserted into the longitudinal mounting hole (14).

4. The adaptive fixture for concrete strength testing according to claim 3, characterized in that: A longitudinal shaft sleeve (62) is arranged in the longitudinal mounting hole (14), and the longitudinal connecting shaft (7) is slidably connected to the longitudinal shaft sleeve (62).

5. The adaptive fixture for concrete strength testing according to claim 3, characterized in that: The end of the first clamping arm (1) away from the displacement sensor (4) is also provided with the longitudinal mounting hole (14) which cooperates with the longitudinal connecting shaft (7).

6. The adaptive fixture for concrete strength testing according to claim 1, characterized in that: A ceramic fixing plate (8) is arranged in the installation groove (12), and one end of the displacement sensor (4) is clamped and fixed on the ceramic fixing plate (8).

7. The adaptive fixture for concrete strength testing according to claim 1, characterized in that: A supporting screw (9) is provided at the bottom of the second clamping arm (2).

8. The adaptive fixture for concrete strength testing according to claim 1, characterized in that: The first clamping arm (1) and the second clamping arm (2) are 40Cr alloy structural steel parts.

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