Concrete compressive strength detection equipment

Abstract

The utility model relates to concrete compressive strength detection equipment, and belongs to the technical field of concrete detection, the concrete compressive strength detection equipment comprises a carrier table used for placing a test mold and a press machine used for applying pressure, and a constant temperature box used for maintaining a constant environment is arranged outside the carrier table; the thermotank is an electric heating box, the carrier table is fixedly connected to the thermotank, an adjusting structure used for changing the position of the press machine is further installed on the top of the thermotank, and a box door is hinged to one side face of the thermotank. According to the concrete compressive strength detection equipment, the detection equipment is arranged in the constant-temperature box, so that the detection environment is always in a stable state, the precision of a single detection structure is improved, in addition, an insertion pipe, a threaded shaft and a clamping jaw which are located on a box door are arranged to grab a test mold, and the test mold is placed in the constant-temperature box along with closing of the box door; and the arranged clamping rods are matched with the adjusting rings to perform centering clamping, so that the detection accuracy can be further improved.

Description

Technical Field

[0001] The present application relates to the technical field of concrete testing equipment, and specifically to a concrete compressive strength testing equipment. Background Art

[0002] Concrete compressive strength testing equipment is an instrument used to measure the compressive strength of concrete. Common concrete compressive strength testing equipment includes presses, pressure sensors, pressure gauges, test molds, etc.

[0003] The press is the core equipment for testing the compressive strength of concrete. It tests the compressive strength of concrete by applying pressure. The test mold is usually cylindrical. When testing, the concrete sample is placed in the test mold and pressure is applied on the press until the sample is broken. The compressive strength of the concrete is calculated by measuring the pressure and the size of the sample.

[0004] When conducting tests, stable environmental conditions such as temperature and humidity must be maintained to reduce the impact of environmental factors on test results. Most existing testing equipment requires the use of a stable environment such as a laboratory to improve detection accuracy, which is very troublesome. In this regard, a concrete compressive strength testing device is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a concrete compressive strength testing device having the advantages of being able to maintain relatively stable environmental conditions for testing.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a concrete compressive strength testing device, comprising a carrier platform for placing a test mold and a press for applying pressure, a constant temperature box for maintaining a constant environment is arranged outside the carrier platform, the constant temperature box is an electric heating box, and the carrier platform is fixedly connected to the constant temperature box;

[0007] The top of the thermostatic box is also equipped with an adjustment structure for changing the position of the press;

[0008] A box door is hinged on one side of the constant temperature box, and a clamping device for placing a test mold is provided on the box door;

[0009] A fixing device for fixing the test mold is also arranged on the upper surface of the carrier platform.

[0010] By adopting the above technical solution, the pressure frame used for detection is built into the constant temperature box, which ensures that the environment in which the detection is carried out is always constant, thereby improving the detection accuracy.

[0011] Furthermore, the adjustment structure includes a push-pull cylinder fixedly mounted on the upper surface of the constant temperature box, the output end of the push-pull cylinder passes through the constant temperature box and is fixedly connected to the upper end of the press, a guide frame is fixedly mounted on the inner wall of the constant temperature box, and the press is slidably connected to the guide frame.

[0012] By adopting the above technical solution, the sliding stability of the press can be maintained through the guide frame.

[0013] Furthermore, the clamping device includes a plug pipe inserted into the box door, the plug pipe is inserted and extends to the inner side of the box door, and the plug pipe can slide relative to the box door.

[0014] By adopting the above technical solution, the position of the cannula relative to the box door can be adjusted.

[0015] Furthermore, a threaded sleeve is fixedly installed inside the insert tube, a threaded shaft extending to the outside of the insert tube is threadedly installed inside the threaded sleeve, a connecting seat is rotatably installed outside the threaded shaft, two clamping jaws for closing and clamping the test mold are rotatably installed on the connecting seat, and a limiting member is arranged between the clamping jaws and the insert tube.

[0016] By adopting the above technical solution, the horizontal position of the clamping claw can be maintained.

[0017] Furthermore, the limiting component includes an extension rod fixedly connected to the end of the insertion tube and a rotating member installed on the end of the extension rod, and two connecting rods are rotatably installed on the rotating member, and the two connecting rods are rotatably connected to the two clamping jaws respectively.

[0018] By adopting the above technical solution, the opening and closing degree of the two clamping jaws can be adjusted.

[0019] Furthermore, the rotating member includes a connecting frame fixedly connected to the extension rod and a rotating shaft rotatably connected to the connecting frame, and the two connecting rods are both rotatably connected to the rotating shaft.

[0020] By adopting the above technical solution, the symmetrical pulling action of the two clamping jaws can be achieved through the connection of the rotating shaft.

[0021] Furthermore, the fixing device includes a clamping rod rotatably installed on the surface of the carrier platform and an adjustment ring for pulling the clamping rod. The number of the clamping rods is four, and the four clamping rods are arranged continuously in a circle with the center position of the carrier platform as the rotation center. The angles of adjacent clamping rods are the same, and rollers are rotatably installed on the ends of the clamping rods.

[0022] By adopting the above technical solution, a plurality of clamping rods can be swung synchronously, so that the ends of the clamping rods can be brought close together to fix the test mold.

[0023] Furthermore, a sliding sleeve is rotatably mounted on the inner side of the adjusting ring, the sliding sleeve is slidably connected to the clamping rod, and an adjusting component for pulling the adjusting ring to rotate is provided on the surface of the carrier platform.

[0024] By adopting the above technical solution, the swing position of the clamping rod can be adjusted.

[0025] Furthermore, the adjustment component includes a servo motor rotatably mounted on the surface of the carrier platform, a screw is fixedly mounted on the output end of the servo motor, a threaded tube is integrally extended from the outer side of the adjustment ring, and the threaded tube is threadedly connected to the screw.

[0026] By adopting the above technical solution, the position of the clamping rod can be automatically controlled and clamped.

[0027] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0028] The concrete compressive strength testing equipment has a constant temperature box in which the testing equipment is built-in, so that the testing environment is always in a stable state, thereby improving the accuracy of a single testing structure. In addition, a plug, a threaded shaft, and a clamping claw are arranged on the box door to grab a test mold and place the test mold in the constant temperature box as the box door is closed, thereby reducing the interference effect of opening the box door on the constant temperature box. The clamping rod is arranged to cooperate with the adjusting ring for centering clamping, which can further improve the testing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of this application;

[0030] Figure 2 A top view of the clamp structure of the present application;

[0031] Figure 3 This is a top view of the carrier platform structure of the present application.

[0032] In the figure: 1. carrier platform; 2. constant temperature box; 3. push-pull cylinder; 4. press machine; 5. guide frame; 6. box door; 7. insert pipe; 8. threaded sleeve; 9. threaded shaft; 10. connecting seat; 11. clamping claw; 12. connecting frame; 13. rotating shaft; 14. connecting rod; 15. clamping rod; 16. roller; 17. sliding sleeve; 18. adjusting ring; 19. servo motor; 20. screw rod; 21. threaded pipe; 22. extension rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] See also Figure 1 A concrete compressive strength testing device in this embodiment includes a carrier 1 for placing a test mold and a press 4 for applying pressure. The output end of the press 4 is equipped with a pressure sensor for recording the ultimate pressure at which the test mold is destroyed. A constant temperature box 2 for maintaining a constant environment is arranged outside the carrier 1. The constant temperature box 2 is an electric heating box that can control the ambient temperature and humidity conditions of the test. The carrier 1 is fixedly connected to the constant temperature box 2.

[0035] In this embodiment, an adjustment structure for changing the position of the press 4 is also installed on the top of the constant temperature box 2. The adjustment structure includes a push-pull cylinder 3 fixedly installed on the upper surface of the constant temperature box 2. The output end of the push-pull cylinder 3 passes through the constant temperature box 2 and is fixedly connected to the upper end of the press 4. The push-pull cylinder 3 can drive the press 4 to change its position.

[0036] It should be noted that a guide frame 5 is fixedly mounted on the inner wall of the constant temperature box 2 , and the press machine 4 is slidably connected to the guide frame 5 , so that the sliding stability of the press machine 4 can be maintained by the guide frame 5 .

[0037] See also Figure 1 In this embodiment, a door 6 is hinged on one side of the thermostatic box 2, and a clamping device for placing a test mold is provided on the door 6. The test mold is carried into a constant environment by the clamping device, which is used to reduce the damage to the constant state in the thermostatic box 2 on the one hand, and also can reduce the danger of placing the test mold during the high temperature test. The thermostatic box 2 is made of transparent material or has an observation window for observing the position and state of the test mold.

[0038] See also Figure 1-2 In this embodiment, the clamping device includes a plug 7 inserted into the box door 6, the plug 7 is inserted and extended to the inner side of the box door 6, and the plug 7 can slide and extend relative to the box door 6 to adjust the position of the end.

[0039] It should be noted that a threaded sleeve 8 is fixedly installed inside the insert tube 7, a threaded shaft 9 extending to the outside of the insert tube 7 is installed on the inner thread of the threaded sleeve 8, a connecting seat 10 is rotatably installed on the outside of the threaded shaft 9, and two clamping jaws 11 for closing and clamping the test mold are rotatably installed on the connecting seat 10.

[0040] In order to maintain the horizontal position of the clamp 11, a limiting component is arranged between the clamp 11 and the cannula 7 in this embodiment. The limiting component includes an extension rod 22 fixedly connected to the end of the cannula 7 and a rotating member installed at the end of the extension rod 22. Two connecting rods 14 are rotatably installed on the rotating member. The two connecting rods 14 are rotatably connected to the two clamps 11 respectively, so that the opening and closing of the clamp 11 can be adjusted by driving the two connecting rods 14 to move through the rotating member.

[0041] See also Figure 2 In this embodiment, the rotating member includes a connecting frame 12 fixedly connected to the extension rod 22 and a rotating shaft 13 rotatably connected in the connecting frame 12. Both connecting rods 14 are rotatably connected to the rotating shaft 13. The connection of the rotating shaft 13 can realize symmetrical traction of the two clamping jaws 11.

[0042] See also Figure 1 and Figure 3 In this embodiment, a fixing device for fixing the test mold is also provided on the upper surface of the carrier platform 1, and the fixing device includes a clamping rod 15 rotatably installed on the surface of the carrier platform 1 and an adjustment ring 18 for pulling the clamping rod 15. There are four clamping rods 15, and the four clamping rods 15 are continuously arranged in a circle with the center position of the carrier platform 1 as the rotation center. The angles of adjacent clamping rods 15 are the same. By swinging multiple clamping rods 15 synchronously, the ends of the clamping rods 15 can be brought close to fix the test mold.

[0043] It should be noted that a roller 16 is rotatably mounted on the end of the clamping rod 15 , and the roller 16 can improve the stability of the abutment connection with different test molds.

[0044] In this embodiment, a sliding sleeve 17 is rotatably mounted on the inner side of the adjusting ring 18 . The sliding sleeve 17 is slidably connected to the clamping rod 15 and can rotate through the adjusting ring 18 to pull the clamping rod 15 to swing.

[0045] It should be noted that the surface of the carrier platform 1 is provided with an adjusting component for pulling the adjustment ring 18 to rotate, and the adjusting component can be used to complete the swing adjustment of the adjustment clamp 15. The adjusting component includes a servo motor 19 rotatably mounted on the surface of the carrier platform 1, and a screw rod 20 is fixedly mounted on the output end of the servo motor 19. A threaded tube 21 is integrally extended from the outer side of the adjustment ring 18, and the threaded tube 21 is threadedly connected to the screw rod 20.

[0046] Specifically, the screw rod 20 rotates to enable the threaded tube 21 to move relative to the screw rod 20 , and the screw rod 20 adapts to the angular position of the threaded tube 21 after the movement under the rotation of the servo motor 19 .

[0047] The working principle of the above embodiment is:

[0048] By adjusting the temperature and humidity in the constant temperature box 2 to be constant, the test mold is placed between the clamps 11, and the threaded shaft 9 is rotated relative to the insert tube 7. The threaded shaft 9 is threadedly matched with the threaded sleeve 8 in the insert tube 7, so that the connecting seat 10 connected to the end of the threaded shaft 9 drives the two clamps 11 to move. The clamps 11 are gradually closed and clamped by the two connecting rods 14. At this time, after closing the box door 6, the extended position of the test mold is adjusted by sliding the insert tube 7, and the test mold is lowered onto the carrier table 1 and falls. By controlling the servo motor 19, the adjustment circle 18 drives the clamp rod 15 to swing to complete the self-centering clamping of the test mold, and then the press 4 is controlled to complete the test, which can improve the accuracy of the detection.

Claims

1. A concrete compressive strength testing device, comprising a carrier platform (1) for placing a test mold and a press (4) for applying pressure, characterized in that: A constant temperature box (2) for maintaining a constant environment is arranged outside the carrier platform (1); the constant temperature box (2) is an electric heating box; and the carrier platform (1) is fixedly connected to the constant temperature box (2); An adjustment structure for changing the position of the press (4) is also installed on the top of the thermostatic box (2); A box door (6) is hingedly connected to one side surface of the constant temperature box (2), and a clamping device for inserting a test mold is provided on the box door (6); A fixing device for fixing the test mold is also provided on the upper surface of the carrier platform (1).

2. A concrete compressive strength testing device according to claim 1, characterized in that: The adjustment structure comprises a push-pull cylinder (3) fixedly mounted on the upper surface of the thermostatic box (2); the output end of the push-pull cylinder (3) passes through the thermostatic box (2) and is fixedly connected to the upper end of the press (4); a guide frame (5) is fixedly mounted on the inner wall of the thermostatic box (2); and the press (4) is slidably connected to the guide frame (5).

3. A concrete compressive strength testing device according to claim 1, characterized in that: The clamping device comprises a plug (7) plugged into the box door (6), the plug (7) is plugged and extends to the inner side of the box door (6), and the plug (7) is able to slide relative to the box door (6).

4. A concrete compressive strength testing device according to claim 3, characterized in that: A threaded sleeve (8) is fixedly mounted inside the insert tube (7), a threaded shaft (9) extending to the outside of the insert tube (7) is internally threadedly mounted on the threaded sleeve (8), a connecting seat (10) is rotatably mounted outside the threaded shaft (9), two clamping jaws (11) for closing and clamping a test mold are rotatably mounted on the connecting seat (10), and a limiting member is provided between the clamping jaws (11) and the insert tube (7).

5. A concrete compressive strength testing device according to claim 4, characterized in that: The limiting component comprises an extension rod (22) fixedly connected to the end of the insertion tube (7) and a rotating member installed on the end of the extension rod (22), on which two connecting rods (14) are rotatably mounted, and the two connecting rods (14) are rotatably connected to the two clamping jaws (11) respectively.

6. A concrete compressive strength testing device according to claim 5, characterized in that: The rotating member comprises a connecting frame (12) fixedly connected to the extension rod (22) and a rotating shaft (13) rotatably connected to the connecting frame (12), and the two connecting rods (14) are both rotatably connected to the rotating shaft (13).

7. A concrete compressive strength testing device according to claim 1, characterized in that: The fixing device comprises a clamping rod (15) rotatably mounted on the surface of the carrier platform (1) and an adjustment ring (18) for pulling the clamping rod (15), the number of the clamping rods (15) is four, the four clamping rods (15) are arranged in a circle with the center position of the carrier platform (1) as the rotation center, the angles of adjacent clamping rods (15) are the same, and the ends of the clamping rods (15) are rotatably mounted with rollers (16).

8. A concrete compressive strength testing device according to claim 7, characterized in that: A sliding sleeve (17) is rotatably mounted on the inner side of the adjustment ring (18); the sliding sleeve (17) is slidably connected to the clamping rod (15); and an adjustment component for pulling the adjustment ring (18) to rotate is provided on the surface of the carrier platform (1).

9. A concrete compressive strength testing device according to claim 8, characterized in that: The adjusting member comprises a servo motor (19) rotatably mounted on the surface of the carrier platform (1), a screw rod (20) being fixedly mounted on the output end of the servo motor (19), a threaded tube (21) integrally extending from the outer side of the adjusting ring (18), and the threaded tube (21) being threadedly connected to the screw rod (20).

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