A concrete sample compressive strength testing apparatus

Abstract

This invention discloses a concrete sample compressive strength testing device, relating to the field of concrete testing technology. It includes a base plate, with a testing cylinder and a vertical rod fixedly connected to the upper side of the base plate. A top plate is fixedly connected to the upper end of the vertical rod, and a hydraulic cylinder is fixedly connected to the upper side of the top plate. A cleaning unit is provided at the lower output end of the hydraulic cylinder. The cleaning unit includes a fixed frame, which is fixedly connected to the lower output end of the hydraulic cylinder. A fixed cylinder is fixedly connected to the lower side of the fixed frame, and a rotating shaft is rotatably connected to the inner side of the fixed cylinder. A mounting plate is fixedly connected to the lower end of the rotating shaft. This concrete sample compressive strength testing device uses a hydraulic cylinder to control the descent of the testing head to test the concrete sample. After testing, the testing head is controlled to rise, bringing a flexible scraper into contact with the testing head, and the testing head is controlled to rotate, cleaning debris from the surface of the testing head. The operation is simple and convenient for subsequent tests.

Description

Technical Field

[0001] This invention relates to the field of concrete testing technology, specifically to a device for testing the compressive strength of concrete samples. Background Technology

[0002] Concrete sample testing is the process of extracting representative samples (i.e., specimens) from concrete according to established technical standards and specifications, and conducting a series of physical, mechanical, and durability tests on these samples under specified conditions to assess whether the concrete quality is up to standard and whether its performance meets design requirements.

[0003] A search revealed a Chinese patent with application number "CN202321057826.2", which is specifically a device for testing the compressive strength of recycled concrete samples. The device includes a base plate, a test head, and a retaining sleeve. A rotating column is rotatably installed on the bottom inner wall of the retaining sleeve, and a bevel gear is fixedly sleeved on the rotating column. Fixing blocks are symmetrically fixedly installed on both inner walls of the retaining sleeve. The same placement plate is fixedly installed on the outer wall of the side of the two fixing blocks that are close to each other. A support block is fixedly installed on the bottom outer wall of one of the fixing blocks.

[0004] In existing testing methods, a hydraulic cylinder lowers the testing head, which then presses down on the concrete column to test the compressive strength of the concrete sample. When the sample bursts, debris flies in all directions, some of which bounces upwards and sticks to or embeds in the bottom surface of the testing head. Especially at the moment of sample failure, if the testing head is still in contact with the broken sample, some fine particles may be "welded" or embedded in the surface of the testing head by the instantaneous high pressure. Since the testing head is positioned high above or directly in front of the user, it's difficult to notice whether anything is stuck on it unless one specifically looks up or crouches down to check. Whether the bottom surface of the testing head is clean at this point is entirely unknown, and failure to clean it promptly will affect the accuracy of subsequent tests.

[0005] Therefore, the present invention proposes a test device for the compressive strength of concrete samples to solve the problems mentioned above. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a concrete sample compressive strength testing device that solves the problem of debris easily adhering to the surface of the testing head during testing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A concrete sample compressive strength testing device includes a base plate, a detection cylinder and a vertical rod fixedly connected to the upper side of the base plate, a top plate fixedly connected to the upper end of the vertical rod, a hydraulic cylinder fixedly connected to the upper side of the top plate, a cleaning unit provided at the lower output end of the hydraulic cylinder, the cleaning unit including a fixed frame fixedly connected to the lower output end of the hydraulic cylinder, a fixed cylinder fixedly connected to the lower side of the fixed frame, a rotating shaft rotatably connected to the inner side of the fixed cylinder, a mounting plate fixedly connected to the lower end of the rotating shaft, a detection head fixedly connected to the lower side of the mounting plate, a motor and an air pump fixedly connected to the upper side of the fixed cylinder, two sets of branch blocks fixedly connected to the inner side of the fixed cylinder, rotating rods rotatably connected to the outer sides of both sets of branch blocks, a mounting plate fixedly connected to the middle of the rotating rods, and a flexible scraper fixedly connected to the middle of the mounting plate.

[0008] Preferably, a rotating block is fixedly connected to the outer end of the rotating rod, an inclined plate is rotatably connected to the outer side of the rotating block, a guide plate is fixedly connected to the outer side of the branch block, a guide block is slidably connected to the outer side of the guide plate, the guide block is rotatably connected to the inclined plate, and a lifting rod is fixedly connected to the upper side of the guide block.

[0009] Preferably, a lifting block is fixedly connected to the upper end of the lifting rod, a side block is fixedly connected to the outer side of the fixed frame, a rocker is rotatably connected to the outer side of the side block, a rectangular groove is provided on the lower side of the rocker, a linkage plate is rotatably connected to the inner side of the rectangular groove, a fixed block is rotatably connected to the outer side of the linkage plate, the fixed block is fixedly connected to the lifting block, a connecting plate is rotatably connected to the outer side of the rocker, and a connecting block is rotatably connected to the outer side of the connecting plate.

[0010] Preferably, a stabilizing rod is fixedly connected to the lower side of the connecting block, and the stabilizing rod and the lifting rod are slidably connected to the fixed frame. A spring is fixedly connected between the connecting block and the fixed frame. A toothed plate and a stop plate are fixedly connected to the lower side of the top plate, and the stop plate is located above the connecting block.

[0011] Preferably, a stabilizing plate is fixedly connected to the upper side of the fixed cylinder, the stabilizing plate is slidably connected to the upright, and the output end of the motor is fixedly connected to the upper end of the rotating shaft.

[0012] Preferably, guide rails are fixedly connected to both the left and right sides of the fixed cylinder, sliders are slidably connected to the inner side of the guide rails, bottom blocks are fixedly connected to the lower side of the sliders on both sides, mounting brackets are fixedly connected to the outer side of the bottom blocks, and collection boxes are provided on the lower side of the mounting brackets on both sides.

[0013] Preferably, a stabilizing block 1 is fixedly connected to the upper side of each of the two sliders. A control plate is rotatably connected to the outer side of the stabilizing block 1. A stabilizing block 2 is rotatably connected to the outer side of the control plate. A lifting ring is fixedly connected to the upper side of the stabilizing block 2. A screw is rotatably connected to the upper side of the guide rail. A bevel gear 1 is fixedly connected to the upper end of the screw. An L-shaped block is fixedly connected to the outer side of the fixed cylinder. A control rod is rotatably connected to the outer side of the L-shaped block. One end of the control rod is fixedly connected to a bevel gear 2 that meshes with the bevel gear 1. The other end of the control rod is fixedly connected to a gear component that meshes with the gear plate. The screw is threadedly connected to the lifting ring.

[0014] Preferably, the mounting plate has a mounting groove on its outer side, a fixing pipe is fixedly connected to the inner side of the mounting groove, multiple nozzles are fixedly connected to the outer side of the fixing pipe, a connecting pipe is fixedly connected to the outer side of the fixing pipe, a U-shaped pipe is fixedly connected to the outer side of the connecting pipe, and a delivery pipe is fixedly connected between the air pump and the U-shaped pipe.

[0015] This invention provides a device for testing the compressive strength of concrete samples. Compared with the prior art, it has the following advantages: (1) The concrete sample compressive strength testing equipment uses a hydraulic cylinder to control the test head to descend and test the concrete sample. After the test is completed, the test head is controlled to rise so that the flexible scraper contacts the test head, and the test head is controlled to rotate so that the debris on the surface of the test head is cleaned. The operation is simple and convenient for the next test.

[0016] (2) The concrete sample compressive strength testing equipment controls the rise of the fixed cylinder so that the mounting frames on both sides and the collection box are close to each other, which facilitates the collection box to collect the debris during cleaning and avoids debris splashing during cleaning and affecting the work of the staff. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional perspective view of the present invention; Figure 3 This is a partial cross-sectional perspective view of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the fixed cylinder in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 This is a three-dimensional structural diagram of the collection box in this invention; Figure 8 for Figure 7Enlarged view of point C in the middle; Figure 9 for Figure 7 Enlarged view of point D in the middle; Figure 10 This is a three-dimensional structural view of the fixed cylinder in this invention from another perspective; Figure 11 for Figure 10 Enlarged view of point E in the middle.

[0018] In the diagram: 1. Base plate; 2. Detection cylinder; 3. Upright pole; 4. Top plate; 5. Hydraulic cylinder; 6. Toothed plate; 7. Support plate; 8. Cleaning unit; 81. Fixing frame; 82. Fixing cylinder; 83. Motor; 84. Stabilizing plate; 85. Rotating shaft; 86. Mounting plate; 87. Detection head; 88. Branch block; 89. Mounting plate; 810. Flexible scraper; 811. Rotating rod; 812. Rotating block; 813. Inclined plate; 814. Guide plate; 815. Guide block; 816. Lifting rod; 817. Lifting block; 818. Fixing block; 819. Linkage plate; 820. Side block; 821. Tilter; 822. Rectangular groove 823. Connecting plate; 824. Connecting block; 825. Stabilizing rod; 826. Spring; 827. Guide rail; 828. Slider; 829. Base block; 830. Mounting bracket; 831. Collection box; 832. Stabilizing block one; 833. Control board; 834. Stabilizing block two; 835. Lifting ring; 836. Screw; 837. Bevel gear one; 838. Bevel gear two; 839. Control rod; 840. Gear component; 841. Mounting groove; 842. Fixing pipe; 843. Nozzle; 844. Connecting pipe; 845. U-shaped pipe; 846. Conveying pipe; 847. Air pump; 848. L-shaped block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides the following technical solutions: Example 1

[0021] Please see Figure 1 - Figure 9A concrete sample compressive strength testing device includes a base plate 1, a testing cylinder 2 and a vertical rod 3 fixedly connected to the upper side of the base plate 1, a top plate 4 fixedly connected to the upper end of the vertical rod 3, a hydraulic cylinder 5 fixedly connected to the upper side of the top plate 4, a cleaning unit 8 provided at the lower output end of the hydraulic cylinder 5, the cleaning unit 8 including a fixing frame 81 fixedly connected to the lower output end of the hydraulic cylinder 5, a fixing cylinder 82 fixedly connected to the lower side of the fixing frame 81, a rotating shaft 85 rotatably connected to the inner side of the fixing cylinder 82, a mounting plate 86 fixedly connected to the lower end of the rotating shaft 85, a testing head 87 fixedly connected to the lower side of the mounting plate 86, and a fixing cylinder... A motor 83 and an air pump 847 are fixedly connected to the upper side of the fixed cylinder 82. Two sets of branch blocks 88 are fixedly connected to the inner side of the fixed cylinder 82. Rotating rods 811 are rotatably connected to the outer sides of the two sets of branch blocks 88. An installation plate 89 is fixedly connected to the middle of the rotating rod 811. A flexible scraper 810 is fixedly connected to the middle of the installation plate 89. When testing concrete samples, the sample is first placed in the testing cylinder 2. Then, the hydraulic cylinder 5 is controlled to drive the fixed frame 81 to descend. The fixed frame 81 drives the fixed cylinder 82 to descend. The fixed cylinder 82 drives the testing head 87 to descend, so that the testing head 87 can press down on the sample to test the compressive strength.

[0022] A rotating block 812 is fixedly connected to the outer end of the rotating rod 811. An inclined plate 813 is rotatably connected to the outer side of the rotating block 812. A guide plate 814 is fixedly connected to the outer side of the branch block 88. A guide block 815 is slidably connected to the outer side of the guide plate 814. The guide block 815 is rotatably connected to the inclined plate 813. A lifting rod 816 is fixedly connected to the upper side of the guide block 815. A lifting block 817 is fixedly connected to the upper end of the lifting rod 816. A side block 820 is fixedly connected to the outer side of the fixed frame 81. A rocker plate 821 is rotatably connected to the outer side of the side block 820. A rectangular groove 822 is opened on the lower side of the rocker plate 821. The inner side of the rectangular groove 822 is rotatably connected to... A linkage plate 819 is connected, and a fixing block 818 is rotatably connected to the outer side of the linkage plate 819. The fixing block 818 is fixedly connected to the lifting block 817. A connecting plate 823 is rotatably connected to the outer side of the rocker 821, and a connecting block 824 is rotatably connected to the outer side of the connecting plate 823. A stabilizing rod 825 is fixedly connected to the lower side of the connecting block 824. The stabilizing rod 825 and the lifting rod 816 are slidably connected to the fixed frame 81. A spring 826 is fixedly connected between the connecting block 824 and the fixed frame 81. A toothed plate 6 and a stop plate 7 are fixedly connected to the lower side of the top plate 4. The stop plate 7 is located above the connecting block 824 and above the fixed cylinder 82. A stabilizing plate 84 is fixedly connected and slidably connected to the upright 3. The output end of the motor 83 is fixedly connected to the upper end of the rotating shaft 85. After the test, the fixed cylinder 82 is raised, which drives the connecting block 824 to rise. The abutment plate 7 contacts the connecting block 824. As the fixed cylinder 82 rises, the abutment plate 7 presses the connecting block 824 down, causing the connecting block 824 to rotate. The connecting block 824 drives the connecting plate 823 to rotate, which in turn drives the rocker plate 821 to rotate. The rocker plate 821 drives the linkage plate 819 to rotate, which in turn drives the lifting block 817 to rise. The lifting block 817 then drives the lifting rod 816 to rise. The lifting rod 816 drives the guide block 815 to rise, the guide block 815 drives the inclined plate 813 to rotate, the inclined plate 813 drives the rotating block 812 to rotate, the rotating block 812 drives the rotating rod 811 to rotate, the rotating rod 811 drives the mounting plate 89 to rotate, and the mounting plate 89 drives the flexible scraper 810 to rotate, so that the flexible scraper 810 is located below the detection head 87. The motor 83 is started, the motor 83 drives the rotating shaft 85 to rotate, the rotating shaft 85 drives the mounting plate 86 to rotate, and the mounting plate 86 drives the detection head 87 to rotate, so that the flexible scraper 810 cleans the debris on the surface of the detection head 87. The operation is simple and reduces the workload of the staff.

[0023] Guide rails 827 are fixedly connected to both the left and right sides of the fixed cylinder 82. Slider blocks 828 are slidably connected to the inner side of the guide rails 827. Base blocks 829 are fixedly connected to the lower side of the sliders 828 on both sides. Mounting brackets 830 are fixedly connected to the outer side of the base blocks 829. Collection boxes 831 are provided on the lower side of the mounting brackets 830 on both sides. Stabilizing blocks 832 are fixedly connected to the upper side of the sliders 828 on both sides. A control plate 833 is rotatably connected to the outer side of the stabilizing blocks 832. Stabilizing blocks are rotatably connected to the outer side of the control plate 833. A lifting ring 835 is fixedly connected to the upper side of the second stabilizing block 834. A screw 836 is rotatably connected to the upper side of the guide rail 827. A bevel gear 837 is fixedly connected to the upper end of the screw 836. An L-shaped block 848 is fixedly connected to the outer side of the fixed cylinder 82. A control rod 839 is rotatably connected to the outer side of the L-shaped block 848. One end of the control rod 839 is fixedly connected to a bevel gear 838 that meshes with the bevel gear 837. The other end of the control rod 839 is fixedly connected to a tooth that meshes with the toothed plate 6. The wheel 840, screw 836, and lifting ring 835 are threadedly connected. When debris needs to be cleaned, the fixed cylinder 82 drives the gear 840 to rise. Under the action of the gear plate 6, the gear 840 rotates, which in turn drives the control lever 839 to rotate. The control lever 839 drives the second bevel gear 838 to rotate, which in turn drives the first bevel gear 837 to rotate. The first bevel gear 837 drives the screw 836 to rotate, which in turn drives the lifting ring 835 to rise. The lifting ring 835 then drives the control plate... When 833 rotates, the control plate 833 drives the slider 828 to move. Since the control plates 833 on both sides are symmetrically distributed, the sliders 828 on both sides move closer to each other. The sliders 828 drive the base block 829 to move, the base block 829 drives the mounting bracket 830 to move, and the mounting bracket 830 drives the collection box 831 to move. The collection boxes 831 on both sides move closer to each other, so that the lower opening of the fixed cylinder 82 is blocked, which makes it easier for the collection box 831 to collect the debris and prevent the debris from splashing out and affecting the working environment of the staff. Example 2

[0024] Based on Example 1, such as Figure 10 , Figure 11 As shown, an installation groove 841 is provided on the outer side of the mounting plate 89. A fixing pipe 842 is fixedly connected to the inner side of the mounting groove 841. Multiple nozzles 843 are fixedly connected to the outer side of the fixing pipe 842. A connecting pipe 844 is fixedly connected to the outer side of the fixing pipe 842. A U-shaped pipe 845 is fixedly connected to the outer side of the connecting pipe 844. A delivery pipe 846 is fixedly connected between the air pump 847 and the U-shaped pipe 845. When cleaning, the air pump 847 is started. Under the action of the delivery pipe 846, the U-shaped pipe 845, and the fixing pipe 842, the multiple nozzles 843 spray high-speed airflow. The high-speed airflow acts on the surface of the detection head 87, improving the cleaning effect.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] During operation, the sample is first placed in the testing cylinder 2. Then, the hydraulic cylinder 5 is controlled to lower the testing head 87, allowing the testing head 87 to press down on the sample. After the test, the fixed cylinder 82 is controlled to rise, which in turn raises the connecting block 824. Under the action of the abutment plate 7, the connecting block 824 descends. Under the action of the connecting plate 823, the rocker plate 821, and the linkage plate 819, the lifting rod 816 is controlled to rise. Under the action of the guide block 815, the inclined plate 813, the rotating block 812, and the rotating rod 811, the mounting plates 8 on both sides are controlled to rise. 9. Rotate the flexible scraper 810 so that it is below the detection head 87. Start the motor 83 to control the rotation of the detection head 87, so that the flexible scraper 810 can clean up the remaining debris. At the same time, the fixed cylinder 82 drives the gear component 840 to rise. Under the action of bevel gear 2 838, bevel gear 1 837 and screw 836, the lifting ring 835 is controlled to rise. Under the action of control plate 833, slider 828, bottom block 829 and mounting bracket 830, the collection boxes 831 on both sides are brought closer to each other, so that the collection boxes 831 can collect the cleaned debris.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the compressive strength of concrete samples, comprising a base plate (1), characterized in that: The upper side of the base plate (1) is fixedly connected to the detection cylinder (2) and the upright (3). The upper end of the upright (3) is fixedly connected to the top plate (4). The upper side of the top plate (4) is fixedly connected to the hydraulic cylinder (5). The lower output end of the hydraulic cylinder (5) is provided with a cleaning unit (8). The cleaning unit (8) includes a fixing frame (81). The fixing frame (81) is fixedly connected to the lower output end of the hydraulic cylinder (5). The lower side of the fixing frame (81) is fixedly connected to the fixing cylinder (82). The inner side of the fixing cylinder (82) is rotatably connected to the rotating shaft (85). The lower end of the rotating shaft (85) is fixedly connected to the mounting plate (86), the lower side of the mounting plate (86) is fixedly connected to the detection head (87), the upper side of the fixed cylinder (82) is fixedly connected to the motor (83) and the air pump (847), the inner side of the fixed cylinder (82) is fixedly connected to two sets of branch blocks (88), the outer sides of the two sets of branch blocks (88) are rotatably connected to the rotating rod (811), the middle part of the rotating rod (811) is fixedly connected to the mounting plate (89), and the middle part of the mounting plate (89) is fixedly connected to the flexible scraper (810).

2. The concrete sample compressive strength testing device according to claim 1, characterized in that: The outer end of the rotating rod (811) is fixedly connected to a rotating block (812), the outer side of the rotating block (812) is rotatably connected to an inclined plate (813), the outer side of the branch block (88) is fixedly connected to a guide plate (814), the outer side of the guide plate (814) is slidably connected to a guide block (815), the guide block (815) is rotatably connected to the inclined plate (813), and the upper side of the guide block (815) is fixedly connected to a lifting rod (816).

3. The concrete sample compressive strength testing device according to claim 2, characterized in that: The upper end of the lifting rod (816) is fixedly connected to a lifting block (817), the outer side of the fixed frame (81) is fixedly connected to a side block (820), the outer side of the side block (820) is rotatably connected to a rocker (821), the lower side of the rocker (821) is provided with a rectangular groove (822), the inner side of the rectangular groove (822) is rotatably connected to a linkage plate (819), the outer side of the linkage plate (819) is rotatably connected to a fixing block (818), the fixing block (818) is fixedly connected to the lifting block (817), the outer side of the rocker (821) is rotatably connected to a connecting plate (823), and the outer side of the connecting plate (823) is rotatably connected to a connecting block (824).

4. The concrete sample compressive strength testing device according to claim 3, characterized in that: A stabilizing rod (825) is fixedly connected to the lower side of the connecting block (824). The stabilizing rod (825) and the lifting rod (816) are slidably connected to the fixed frame (81). A spring (826) is fixedly connected between the connecting block (824) and the fixed frame (81). A toothed plate (6) and a stop plate (7) are fixedly connected to the lower side of the top plate (4). The stop plate (7) is located above the connecting block (824).

5. The concrete sample compressive strength testing device according to claim 4, characterized in that: A stabilizing plate (84) is fixedly connected to the upper side of the fixed cylinder (82). The stabilizing plate (84) is slidably connected to the upright (3). The output end of the motor (83) is fixedly connected to the upper end of the rotating shaft (85).

6. The concrete sample compressive strength testing device according to claim 5, characterized in that: The fixed cylinder (82) is fixedly connected to guide rails (827) on both the left and right sides. A slider (828) is slidably connected to the inner side of the guide rail (827). A bottom block (829) is fixedly connected to the lower side of the slider (828) on both sides. A mounting bracket (830) is fixedly connected to the outer side of the bottom block (829). A collection box (831) is provided on the lower side of the mounting bracket (830) on both sides.

7. The concrete sample compressive strength testing device according to claim 6, characterized in that: Both sides of the slider (828) are fixedly connected to the upper side of a stabilizing block 1 (832). A control plate (833) is rotatably connected to the outer side of the stabilizing block 1 (832). A stabilizing block 2 (834) is rotatably connected to the outer side of the control plate (833). A lifting ring (835) is fixedly connected to the upper side of the stabilizing block 2 (834). A screw (836) is rotatably connected to the upper side of the guide rail (827). A bevel gear 1 is fixedly connected to the upper end of the screw (836). 837), an L-shaped block (848) is fixedly connected to the outside of the fixed cylinder (82), a control rod (839) is rotatably connected to the outside of the L-shaped block (848), one end of the control rod (839) is fixedly connected to a bevel gear (838) meshing with a bevel gear (837), the other end of the control rod (839) is fixedly connected to a gear component (840) meshing with a gear plate (6), and the screw (836) is threadedly connected to the lifting ring (835).

8. The concrete sample compressive strength testing device according to claim 1, characterized in that: The mounting plate (89) has a mounting groove (841) on its outer side. A fixing pipe (842) is fixedly connected to the inner side of the mounting groove (841). Multiple nozzles (843) are fixedly connected to the outer side of the fixing pipe (842). A connecting pipe (844) is fixedly connected to the outer side of the fixing pipe (842). A U-shaped pipe (845) is fixedly connected to the outer side of the connecting pipe (844). A delivery pipe (846) is fixedly connected between the air pump (847) and the U-shaped pipe (845).

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