Testing device for anti-cracking concrete
By designing a test device including a workbench, support seat, U-shaped plate, cylinder and motor, the problem that the prior art cannot perform tensile and tension tests simultaneously is solved, and simultaneous testing of concrete is achieved and extreme environments is simulated. .
Patent Information
- Application Number
- CN202323630935.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing concrete crack resistance test device cannot be carried out simultaneously with tensile and tensile pressure tests, cannot simulate the crack resistance of concrete in extreme environments, and cannot effectively evaluate the crack resistance of concrete.
A test device including a workbench, support seat, U-shaped plate, cylinder, motor, bidirectional threaded rod and clamp are designed. The concrete samples are tensile tested by driving the bidirectional threaded rod and clamp through the motor, while using cylinders and pressure detection The head is subjected to compression test to simulate tension conditions in extreme environments.
The simultaneous tensile and compressive test of concrete is achieved, which can more accurately evaluate its crack resistance and simulate the use in extreme environments.
Smart Images
Figure CN222144673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete anti-cracking test, in particular to a testing device for anti-cracking concrete. Background Art
[0002] Concrete is one of the most important civil engineering materials in contemporary times. It is an artificial stone made of cementitious materials, granular aggregates, water, and admixtures and additives added in a certain proportion, which are evenly stirred, compacted into shape, and cured and hardened. Concrete has the characteristics of abundant raw materials, low price, and simple production process, so its usage is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. Concrete needs to undergo an anti-cracking test to determine whether it meets the construction standards. A concrete anti-cracking test device will be used during the test.
[0003] Existing anti-cracking tests generally require tensile and tensile-compressive tests on concrete to detect the degree of concrete's resistance to cracking. However, existing concrete anti-cracking testing devices test tensile and tensile-compressive tests separately and cannot perform tensile and compressive tests on concrete at the same time. Such testing methods cannot simulate the concrete's resistance to cracking under extreme environments and cannot better evaluate the concrete's resistance to cracking. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a testing device for anti-cracking concrete, which solves the problems in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A testing device for crack-resistant concrete comprises a workbench, a support seat is fixedly installed on the top of the workbench, a U-shaped plate is fixedly installed on the top of the workbench, a pressure testing mechanism is provided on the surface of the U-shaped plate, a slide groove is provided on the top of the support seat, a fixed plate is installed on one side of the support seat through a moving mechanism, a clamping plate is installed on the top of the fixed plate through a lifting mechanism, a lifting groove is provided on one side of the fixed plate, a limiting mechanism is provided on one side of the inner wall of the lifting groove, and a fixing mechanism is provided on one side of the clamping plate.
[0007] Preferably, the pressure testing mechanism comprises a cylinder fixedly mounted on the surface of the U-shaped plate, and a detection pressure head is fixedly mounted on the output end of the cylinder.
[0008] Preferably, the moving mechanism includes a motor fixedly mounted on one side of a support seat, a first bidirectional threaded rod is fixedly mounted on the output end of the motor, a sliding block is provided on the surface thread sleeve of the first bidirectional threaded rod, the surface of the sliding block is fitted with the inner wall of the slide groove, the top of the sliding block is fixedly mounted on the bottom of the fixed plate, the number of the sliding blocks and the fixed plates is two groups, and they are symmetrically arranged.
[0009] Preferably, the lifting mechanism includes a second bidirectional threaded rod rotatably mounted on the top of the fixed plate, a lifting block is threadedly sleeved on the surface of the second bidirectional threaded rod, the surface of the lifting block is in contact with the inner wall of the lifting groove, one side of the lifting block is fixedly mounted on one side of the clamping plate, the number of the second bidirectional threaded rods is two groups, and they are symmetrically arranged, the number of the lifting blocks and the clamping plates is four groups, and they are symmetrically arranged.
[0010] Preferably, the limiting mechanism includes a limiting groove opened on one side of the inner wall of the lifting groove, a limiting plate is slidably installed on the inner wall of the limiting groove, one side of the limiting plate is fixedly installed on one side of the lifting block, the number of the limiting grooves is four groups, and they are symmetrically arranged, and the number of the limiting plates is eight groups, and they are symmetrically arranged.
[0011] Preferably, the fixing mechanism includes holes penetrating through one side of the clamping plate, bolts are slidably mounted on the inner wall of the holes, the number of the holes is eight groups and they are symmetrically arranged, and the number of the bolts is four groups and they are symmetrically arranged.
[0012] Preferably, support legs are fixedly installed on the bottom of the workbench, and the number of the support legs is four groups, and they are arranged in an array.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the testing device for crack-resistant concrete drives two groups of lifting blocks to move toward each other by screwing the second bidirectional threaded rod on the fixed plate, and the two groups of lifting blocks drive two groups of clamping plates to move toward each other, so that the clamping plates can preliminarily clamp the concrete sample, and the operation of the other fixed plate is the same. After the preliminary clamping, the concrete can be further clamped by bolts to prevent the concrete from falling off during stretching. At this time, the fixed plate is driven to move in the opposite direction by reversing the motor to perform a tensile test on the concrete. At the same time, the cylinder is started to drive the detection pressure head to move, so that the detection pressure head can perform a compression test on the concrete sample. At this time, the tensile and compression tests are carried out simultaneously, simulating the anti-cracking situation of concrete under extreme environments, and making an evaluation test on the concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the positive measurement of the utility model;
[0015] Figure 2It is a schematic diagram of the structure of the side sectional view of the utility model;
[0016] Figure 3 It is an enlarged view of point A of the present utility model.
[0017] In the figure: 1. workbench; 2. support base; 3. U-shaped plate; 4. cylinder; 5. detection pressure head; 6. motor; 7. first bidirectional threaded rod; 8. slider; 9. slide groove; 10. fixed plate; 11. second bidirectional threaded rod; 12. lifting block; 13. clamping plate; 14. lifting groove; 15. limit groove; 16. limit plate; 17. hole; 18. bolt; 19. support leg. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Example: Refer to Figure 1-3The utility model provides a technical solution, a testing device for crack-resistant concrete, comprising a workbench 1, a support seat 2 is fixedly installed on the top of the workbench 1, a U-shaped plate 3 is fixedly installed on the top of the workbench 1, a pressure testing mechanism is provided on the surface of the U-shaped plate 3, the pressure testing mechanism comprises a cylinder 4 fixedly installed on the surface of the U-shaped plate 3, a detection pressure head 5 is fixedly installed on the output end of the cylinder 4, and a tension and compression test can be performed on the concrete through the pressure testing mechanism, a slide groove 9 is provided on the top of the support seat 2, a fixed plate 10 is installed on one side of the support seat 2 through a moving mechanism, and the moving mechanism comprises a motor 6 fixedly installed on one side of the support seat 2, a first bidirectional threaded rod 7 is fixedly installed on the output end of the motor 6, and a sliding thread sleeve is provided on the surface of the first bidirectional threaded rod 7 Block 8, the surface of the slider 8 fits with the inner wall of the slide groove 9, the top of the slider 8 is fixedly installed with the bottom of the fixed plate 10, the number of the slider 8 and the fixed plate 10 is two groups, and they are symmetrically arranged, the concrete can be stretched by the moving mechanism, the top of the fixed plate 10 is installed with a clamping plate 13 through a lifting mechanism, the lifting mechanism includes a second two-way threaded rod 11 rotatably installed on the top of the fixed plate 10, the surface of the second two-way threaded rod 11 is threadedly sleeved with a lifting block 12, the surface of the lifting block 12 fits with the inner wall of the lifting groove 14, one side of the lifting block 12 is fixedly installed with one side of the clamping plate 13, the number of the second two-way threaded rod 11 is two groups, and they are symmetrically arranged, the number of the lifting blocks 12 and the clamping plates 13 is four groups, and they are symmetrically arranged The lifting mechanism can be used to conveniently clamp the concrete sample for tensile testing. A lifting groove 14 is provided on one side of the fixed plate 10, and a limiting mechanism is provided on one side of the inner wall of the lifting groove 14. The limiting mechanism includes a limiting groove 15 provided on one side of the inner wall of the lifting groove 14, and a limiting plate 16 is slidably installed on the inner wall of the limiting groove 15. One side of the limiting plate 16 is fixedly installed with one side of the lifting block 12. The number of the limiting grooves 15 is four groups, and they are symmetrically arranged. The number of the limiting plates 16 is eight groups, and they are symmetrically arranged. The limiting mechanism can prevent the lifting block 12 from detaching from the lifting groove 14 during the stretching process. A fixing mechanism is provided on one side of the clamping plate 13, and the fixing mechanism includes a hole 17 that runs through one side of the clamping plate 13. The inner wall of the hole 17 Bolts 18 are installed on the slide, and the number of holes 17 is eight groups, which are symmetrically arranged. The number of bolts 18 is four groups, which are symmetrically arranged. The concrete sample can be further fixed by the fixing mechanism to facilitate the tensile test. Support legs 19 are fixedly installed on the bottom of the workbench 1. The number of support legs 19 is four groups, which are arranged in an array. By screwing the second bidirectional threaded rod 11 on the fixed plate 10, the two groups of lifting blocks 12 are driven to move toward each other, and the two groups of lifting blocks 12 drive the two groups of clamping plates 13 to move toward each other, so that the clamping plates 13 can initially clamp the concrete sample. The operation of the other fixed plate 10 is the same. After the initial clamping, the concrete can be further clamped by the bolts 18 to prevent the concrete from falling off during the stretching.At this time, the motor 6 is reversed to drive the fixed plate 10 to move in the opposite direction to perform a tensile test on the concrete. At the same time, the cylinder 4 is started to drive the detection pressure head 5 to move, so that the detection pressure head 5 can perform a compression test on the concrete sample. At this time, the tension and compression tests are carried out simultaneously, simulating the concrete cracking resistance in extreme environments and making an evaluation test on the concrete.
[0020] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.
[0021] During use: the inspector places the concrete sample to be tested on the support seat 2, and drives the first bidirectional threaded rod 7 to rotate through the motor 6, and the first bidirectional threaded rod 7 drives the two sets of sliders 8 to move toward each other, and the two sets of sliders 8 drive the two sets of fixed plates 10 to move toward each other. After the two sets of fixed plates 10 are moved to a suitable position, one of the fixed plates 10 is taken as an example, and the second bidirectional threaded rod 11 on the fixed plate 10 is screwed to drive the two sets of lifting blocks 12 to move toward each other, and the two sets of lifting blocks 12 drive the two sets of clamping plates 13 to move toward each other, so that the clamping plates 13 The concrete sample can be initially clamped, and the other fixed plate 10 operates in the same manner. After the initial clamping, the concrete can be further clamped by the bolts 18 to prevent the concrete from falling off during stretching. At this time, the motor 6 is reversed to drive the fixed plate 10 to move in the opposite direction to perform a tensile test on the concrete. At the same time, the cylinder 4 is started to drive the detection pressure head 5 to move, so that the detection pressure head 5 can perform a compressive test on the concrete sample. At this time, the tensile and compression tests are carried out simultaneously, simulating the concrete crack resistance under extreme conditions and making an evaluation test on the concrete.
[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A testing device for crack resistance concrete, comprising a workbench (1), characterized in that: A support seat (2) is fixedly mounted on the top of the workbench (1), a U-shaped plate (3) is fixedly mounted on the top of the workbench (1), a pressure testing mechanism is provided on the surface of the U-shaped plate (3), a slide groove (9) is provided on the top of the support seat (2), a fixed plate (10) is installed on one side of the support seat (2) via a moving mechanism, a clamping plate (13) is installed on the top of the fixed plate (10) via a lifting mechanism, a lifting groove (14) is provided on one side of the fixed plate (10), a limiting mechanism is provided on one side of the inner wall of the lifting groove (14), and a fixing mechanism is provided on one side of the clamping plate (13).
2. A testing device for crack-resistant concrete according to claim 1, characterized in that: The pressure testing mechanism comprises a cylinder (4) fixedly mounted on the surface of the U-shaped plate (3), and a detection pressure head (5) is fixedly mounted on the output end of the cylinder (4).
3. A testing device for crack-resistant concrete according to claim 1, characterized in that: The moving mechanism comprises a motor (6) fixedly mounted on one side of the support seat (2); a first bidirectional threaded rod (7) is fixedly mounted on the output end of the motor (6); a sliding block (8) is threadedly sleeved on the surface of the first bidirectional threaded rod (7); the surface of the sliding block (8) is in contact with the inner wall of the slide groove (9); the top of the sliding block (8) is fixedly mounted on the bottom of the fixing plate (10); the number of the sliding blocks (8) and the fixing plate (10) is two sets, and they are symmetrically arranged.
4. A testing device for crack-resistant concrete according to claim 1, characterized in that: The lifting mechanism comprises a second bidirectional threaded rod (11) rotatably mounted on the top of a fixed plate (10); a lifting block (12) is threadedly sleeved on the surface of the second bidirectional threaded rod (11); a surface of the lifting block (12) is in contact with an inner wall of a lifting groove (14); one side of the lifting block (12) is fixedly mounted on one side of a clamping plate (13); the number of the second bidirectional threaded rods (11) is two groups, which are symmetrically arranged; the number of the lifting blocks (12) and the clamping plates (13) is four groups, which are symmetrically arranged.
5. A testing device for crack-resistant concrete according to claim 1, characterized in that: The limiting mechanism comprises a limiting groove (15) formed on one side of the inner wall of the lifting groove (14); a limiting plate (16) is slidably mounted on the inner wall of the limiting groove (15); one side of the limiting plate (16) is fixedly mounted on one side of the lifting block (12); the limiting grooves (15) are provided in four groups and are symmetrically arranged; and the limiting plates (16) are provided in eight groups and are symmetrically arranged.
6. A testing device for crack-resistant concrete according to claim 1, characterized in that: The fixing mechanism comprises holes (17) extending through one side of the clamping plate (13), bolts (18) being slidably mounted on the inner wall of the holes (17), the holes (17) being provided in eight groups and symmetrically arranged, and the bolts (18) being provided in four groups and symmetrically arranged.
7. A testing device for crack-resistant concrete according to claim 1, characterized in that: Support legs (19) are fixedly mounted on the bottom of the workbench (1), and the number of the support legs (19) is four groups, and they are arranged in an array.