Municipal pavement concrete strength detection device

Abstract

A municipal pavement concrete strength detection device belongs to the technical field of concrete strength detection and comprises a workbench, a detection unit is arranged above the workbench, screw rods are symmetrically, vertically and rotatably arranged on the left and right sides of the upper surface of the workbench, threads on the outer walls of the left and right screw rods are reverse and symmetrical, and the threads on the outer walls of the screw rods are sleeved with moving blocks. A through groove is vertically formed in the middle of the lifting plate, four sets of stand columns are vertically and fixedly arranged on the upper surface of the workbench, and a detection table is fixedly installed at the top ends of the stand columns. The detection environment can be protected, it can be guaranteed that detected sample fragments stay in the inner cavity of the baffle and cannot splash all around, centralized cleaning of the fragments in the later period is facilitated, the situation that the safety of workers is affected by the splashed fragments in the detection process can be avoided, the safety of equipment in the using process is improved, and the detection efficiency is improved. And the four groups of baffles are synchronously closed or unfolded without one-by-one operation, so that the equipment is more convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete strength detection, and in particular relates to a municipal pavement concrete strength detection device. Background Art

[0002] Municipal pavement is composed of concrete, cement mortar, crushed stone cushion, soil and other parts. Among them, the strength of concrete plays an important role in the overall strength of municipal pavement. Therefore, it is necessary to sample and test the concrete strength of municipal pavement to test whether the pavement strength meets the strength requirements. The existing concrete strength test commonly uses the rebound method and the pressure method. The pressure method test is to place the concrete sample on the test table and use the test device to press the concrete sample until it breaks, so as to test the strength that the concrete sample can withstand.

[0003] A related art (publication number CN211571316U) discloses a concrete strength detection device for road construction, including a frame, a motor is fixedly installed between the upper outer surfaces of the frame, a workbench is arranged at the bottom end of the inner wall of the frame, a pressure sensor is fixedly installed on the upper outer surface of the workbench, a rotating shaft is fixedly installed at the middle position of the lower outer surface of the motor, the lower outer surface of the rotating shaft passes through the top of the frame and extends to the inside of the frame, a fixed plate is fixedly installed between the inner side surfaces of the frame near the top, a push plate is arranged below the fixed plate, a test plate is arranged below the push plate, and a connecting rod is fixedly connected between the test plate and the push plate. It is convenient for users to place concrete samples on the road surface on the workbench, and at the same time, the consumption of mechanical energy during the operation of the motor-driven rotating shaft is reduced, which is convenient for users to operate and improves its performance.

[0004] However, in the above scheme, there is a lack of protection function during the detection process. The concrete samples being tested are prone to break and splash during the detection process. The splashed concrete sample fragments are difficult to clean up in a centralized manner, and the safety of the testers is also affected. Utility Model Content

[0005] In view of the problems in the prior art that the tested concrete samples are easy to break and splash during the testing process, and the splashed concrete sample fragments are difficult to clean up in a centralized manner, which also affects the safety of the test personnel, the utility model provides a municipal pavement concrete strength testing device, which can protect the testing environment, ensure that the sample fragments after the test stay in the inner cavity of the baffle and will not splash around, which is convenient for the centralized cleaning of the fragments later, and can avoid the splashed fragments during the testing process affecting the safety of the staff, thereby improving the safety of the equipment during use. The specific technical scheme is as follows:

[0006] A municipal pavement concrete strength testing device comprises a workbench, a testing unit is arranged above the workbench, screws are symmetrically and vertically rotatably arranged on the left and right sides of the upper surface of the workbench, the threads of the outer walls of the two screws on the left and right sides are opposite and symmetrical, a moving block is sleeved on the threaded sleeve of the outer wall of the screw, a lifting plate is fixedly connected to the outer wall of the moving block, a through slot is vertically opened in the middle of the lifting plate, four groups of columns are vertically and fixedly arranged on the upper surface of the workbench, a testing platform is fixedly installed on the top of the column, four groups of baffles are rotatably arranged at the edge of the upper surface of the testing platform, the baffles penetrate the inner cavity of the through slot, and the four groups of baffles can form a first state and a second state;

[0007] Wherein, in the first state, the four groups of baffles form a gathered and closed space, and in the second state, the four groups of baffles flip outward and unfold.

[0008] In the above technical solution, the top ends of the four groups of baffles in the first state are inclined outwards.

[0009] In the above technical solution, a first bevel gear is fixedly connected to the bottom end of the outer wall of the screw, a first support seat is fixedly installed on the upper surface of the workbench, the outer wall of the first support seat is connected to a first rotating rod that rotates from left to right, and second bevel gears are respectively installed on the left and right ends of the first rotating rod, and the second bevel gear is meshingly connected to the outer wall of the first bevel gear.

[0010] In the above technical solution, a second support seat is installed on the upper surface of the workbench, a second rotating rod is rotatably connected to the outer wall of the second support seat, a second gear is fixedly connected to the outer wall of the second rotating rod, a motor is installed on the side wall of the second support seat, and the output end of the motor is connected to the second rotating rod, a first gear is fixedly installed on the outer wall of the first rotating rod, and the first gear is meshingly connected to the outer wall of the second gear.

[0011] In the above technical solution, a concrete sample is placed on the upper surface of the testing table.

[0012] In the above technical solution, the detection unit includes a vertical plate vertically installed on the rear side of the upper surface of the workbench, a mounting frame is installed on the top of the vertical plate, a hydraulic cylinder is installed on the top of the mounting frame, and a pressure plate is installed on the output end of the hydraulic cylinder.

[0013] In the above technical solution, the pressing plate and the concrete sample are arranged correspondingly up and down.

[0014] In the above technical solution, the baffle is configured as a transparent body.

[0015] Compared with the prior art, the utility model of a municipal pavement concrete strength detection device has the following beneficial effects:

[0016] First, in view of the problem that the concrete sample being tested is easy to break and splash during the testing process, and the splashed concrete sample fragments are difficult to be cleaned up in a centralized manner, which also affects the safety of the test personnel, the utility model can protect the testing environment by arranging a baffle around the concrete sample, and can ensure that the sample fragments after the test stay in the inner cavity of the baffle and will not splash around, which is convenient for centralized cleaning of the fragments later, and can avoid the splashed fragments during the testing process affecting the safety of the staff, thereby improving the safety of the equipment during use;

[0017] Second, the baffles of the utility model are rotatably arranged at the detection platform, and the four groups of baffles can be synchronously gathered and closed in the middle or turned and unfolded outward under the action of the lifting plate and the through slot, and the closing or unfolding of the four groups of baffles is carried out synchronously without the need to operate one by one;

[0018] 3. The utility model can promote the synchronous lifting and lowering movement of the two groups of moving blocks on the left and right sides through the arrangement of the screw rod, the moving block, the lifting plate and the first bevel gear, so as to promote the vertical movement of the lifting plate;

[0019] Fourth, the utility model can drive the two sets of second bevel gears on the left and right sides to rotate synchronously by means of the first support seat, the first rotating rod, the second bevel gear, the first gear, and the second gear, thereby promoting the two first bevel gears and the screw rod on the left and right sides to rotate synchronously, thereby ensuring the synchronization of the subsequent lifting and lowering of the two sets of moving blocks and the lifting plate;

[0020] In summary, the utility model can protect the detection environment and ensure that the sample fragments after detection stay in the inner cavity of the baffle and will not splash around, which is convenient for the centralized cleaning of the fragments at a later time. It can also avoid the splashing fragments during the detection process from affecting the safety of the staff, thereby improving the safety of the equipment during use. The closing or unfolding of the four groups of baffles is carried out synchronously without the need to operate them one by one, making the equipment more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the baffle of the utility model in the first state;

[0022] Figure 2 This is a structural schematic diagram of the lifting plate of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the first rotating rod of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the baffle of the utility model in the second state;

[0025] Figures 1 to 4Among them, 1. workbench, 2. screw, 3. moving block, 4. lifting plate, 5. through slot, 6. first bevel gear, 7. first supporting seat, 8. first rotating rod, 9. second bevel gear, 10. first gear, 11. second supporting seat, 12. second rotating rod, 13. second gear, 14. motor, 15. column, 16. testing table, 17. baffle, 18. concrete sample, 19. vertical plate, 20. mounting frame, 21. hydraulic cylinder, 22. pressing plate. DETAILED DESCRIPTION

[0026] The following is a combination of specific implementation cases and attached Figures 1 to 4 The present invention is further described below, but the present invention is not limited to these embodiments.

[0027] See also Figures 1 to 4 As shown, a municipal pavement concrete strength testing device comprises a workbench 1, a testing unit is arranged above the workbench 1, the testing unit is a common component for concrete strength testing in the prior art, and it will not be described excessively here. Screw rods 2 are symmetrically and vertically rotatably arranged on the left and right sides of the upper surface of the workbench 1. The screw rods 2 can rotate under the action of external force, and the threads of the outer walls of the left and right screw rods 2 are opposite and symmetrical, thereby ensuring that when the two screw rods 2 rotate, the directions of the lifting and lowering movements of the left and right moving blocks 3 are the same. The thread sleeve of the outer wall of the screw 2 is provided with a moving block 3, and the rotating screw 2 causes the moving block 3 to move in the vertical direction along the outer wall of the screw 2. The outer wall of the moving block 3 is fixedly connected with a lifting plate 4, and the lifting and lowering movement of the lifting plate 4 is realized by the movement of the moving block 3. A through slot 5 is vertically provided in the middle of the lifting plate 4, four groups of columns 15 are vertically and fixedly provided on the upper surface of the workbench 1, and a detection platform 16 is fixedly installed on the top of the columns 15. Four groups of baffles 17 are rotatably provided at the edge of the upper surface of the detection platform 16. The baffles 17 penetrate the inner cavity of the through slot 5, and the lifting and lowering movement of the through slot 5 is driven by the lifting plate 4 to drive the baffles 17 to rotate and close. The four groups of baffles 17 can form a first state and a second state; wherein, in the first state, the four groups of baffles 17 form a gathered and closed space to enclose and protect the detection platform 16 to prevent the debris generated during the detection process from splashing around. In the second state, the four groups of baffles 17 are flipped and unfolded outwardly so as to collect and clean the debris blocked by the detection platform 16; for details, refer to Figure 1 As shown, the top ends of the four groups of baffles 17 in the first state are tilted outward, thereby ensuring that when the subsequent lifting plate 4 moves downward, the baffles 17 can automatically flip and unfold downward along the inner cavity of the through groove 5 under the action of their own gravity; in addition, the baffles 17 are configured as transparent bodies. In the present embodiment, the baffles 17 are configured as transparent acrylic plates, which ensure that the baffles 17 can achieve a protective effect while facilitating the observation of the detection situation at the detection platform 16.

[0028] See also Figures 1 to 3As shown, a first bevel gear 6 is fixedly connected to the bottom end of the outer wall of the screw 2, a first support seat 7 is fixedly installed on the upper surface of the workbench 1, and a first rotating rod 8 is rotatably connected to the outer wall of the first supporting seat 7 from left to right through a bearing. Second bevel gears 9 are respectively installed at the left and right ends of the first rotating rod 8, and the second bevel gears 9 are meshed and connected with the outer wall of the first bevel gear 6. When the first rotating rod 8 rotates, the two second bevel gears 9 are prompted to rotate synchronously, so as to drive the left and right first bevel gears 6 to rotate synchronously, thereby realizing the synchronous rotation of the left and right screws 2.

[0029] See also Figure 3 As shown, a second support seat 11 is installed on the upper surface of the workbench 1, and a second rotating rod 12 is rotatably connected to the outer wall of the second support seat 11, and a second gear 13 is fixedly connected to the outer wall of the second rotating rod 12, and a motor 14 is installed on the side wall of the second support seat 11, and the output end of the motor 14 is connected to the second rotating rod 12, and a first gear 10 is fixedly installed on the outer wall of the first rotating rod 8, and the first gear 10 is meshingly connected to the outer wall of the second gear 13, and the motor 14 is set to a forward and reverse motor commonly used on the market, and its output end can change the forward and reverse directions according to usage requirements. The second rotating rod 12 and the second gear 13 are driven to rotate by the turned-on motor 14, and the second gear 13 drives the first gear 10 meshingly connected to the outer wall to rotate, so as to promote the first rotating rod 8 and the two second bevel gears 9 at both ends of the first rotating rod 8 to rotate synchronously.

[0030] See also Figure 2 As shown, a concrete sample 18 is placed on the upper surface of the testing table 16. With the help of the testing unit, the concrete sample 18 can be pressed to test the strength of the concrete sample 18. The testing unit includes a vertical plate 19 vertically installed on the rear side of the upper surface of the workbench 1. A mounting frame 20 is installed on the top of the vertical plate 19. A hydraulic cylinder 21 is installed on the top of the mounting frame 20. A pressing plate 22 is installed on the output end of the hydraulic cylinder 21. The pressing plate 22 is driven downward by the opened hydraulic cylinder 21 to press the concrete sample 18 until the concrete sample 18 is broken, thereby realizing the strength test of the concrete sample 18. In order to ensure that the pressing plate 22 can accurately act on the concrete sample 18, the pressing plate 22 and the concrete sample 18 are arranged correspondingly up and down.

[0031] It is also worth mentioning that a pressure sensor identical to that in the prior art (publication number CN211571316U) is provided at the bottom of the pressing plate 22. The pressure applied by the pressing plate 22 to the concrete sample 18 is observed by means of the pressure sensor. The pressure is continuously applied until the concrete sample 18 breaks, and then the pressure is recorded to complete the test. The principle is the same as that of the prior art, and no further elaboration is given here.

[0032] The working principle of a municipal pavement concrete strength detection device in this embodiment is as follows:

[0033] Put the concrete sample 18 on the upper surface of the testing table 16, and drive the second rotating rod 12 and the second gear 13 to rotate by turning on the motor 14. The second gear 13 drives the first gear 10 meshing with the outer wall to rotate, so as to cause the first rotating rod 8 and the two second bevel gears 9 at both ends of the first rotating rod 8 to rotate synchronously. At this time, the two first bevel gears 6 meshing with the two second bevel gears 9 respectively rotate in opposite directions, so as to cause the left and right screw rods 2 to rotate in opposite directions. Since the outer wall threads of the two screw rods 2 are arranged in reverse symmetry, the two screw rods 2 rotating in opposite directions can cause the two moving blocks 3 to move upward synchronously, so as to cause the lifting plate 4 to move vertically upward. At this time, the through groove 5 drives the baffle 17 fitted with the inner wall to gradually gather toward the middle until the edges of the adjacent baffles 17 fit together, thereby realizing that the four groups of baffles 17 are closed and gathered to form a protective area;

[0034] The hydraulic cylinder 21 is opened to drive the pressing plate 22 to move downward to apply pressure to the concrete sample 18 until the concrete sample 18 is broken. The fragments splashed during the breaking process can be blocked by the baffle 17 and stay on the upper surface of the testing table 16 so as to be subsequently cleaned up;

[0035] After the equipment is used, referring to the above principle, the motor 14 rotates in the opposite direction to cause the second rotating rod 12 to rotate in the opposite direction, and finally the lifting plate 4 moves downward. Since the baffle 17 is still tilted outward when it is gathered and closed, as the lifting plate 4 moves downward, the baffle 17 is in contact with the inner wall of the through groove 5 and flips outward together. The baffle 17 located at the front side is in contact with the inner wall of the through groove 5 and gradually flips to a downward tilted state, thereby realizing the deployment of the baffle 17, which can be used to centrally clean the concrete sample 18 on the top of the test table 16 and the debris collected during the test process;

[0036] The utility model can protect the detection environment and ensure that the sample fragments after detection stay in the inner cavity of the baffle 17 and do not splash around, which is convenient for centralized cleaning of the fragments at a later time, and can avoid the splashing fragments during the detection process affecting the safety of the staff, thereby improving the safety of the equipment during use. The closing or unfolding of the four groups of baffles 17 is carried out synchronously without the need to operate them one by one, making the equipment more convenient to use.

[0037] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A municipal pavement concrete strength detection device, comprising a workbench (1), a detection unit is arranged above the workbench (1), characterized in that: The upper surface of the workbench (1) is symmetrically and vertically rotatably provided with screw rods (2), the outer wall threads of the two screw rods (2) on the left and right sides are opposite and symmetrical, the outer wall threads of the screw rods (2) are sleeved with a moving block (3), the outer wall of the moving block (3) is fixedly connected with a lifting plate (4), and a through slot (5) is vertically opened in the middle of the lifting plate (4), four groups of columns (15) are vertically and fixedly provided on the upper surface of the workbench (1), a detection platform (16) is fixedly installed on the top of the column (15), and four groups of baffles (17) are rotatably provided at the edge of the upper surface of the detection platform (16), the baffles (17) pass through the inner cavity of the through slot (5), and the four groups of baffles (17) can form a first state and a second state; Wherein, in the first state, the four groups of baffles (17) form a gathered and closed space, and in the second state, the four groups of baffles (17) are flipped outward and unfolded.

2. A municipal pavement concrete strength detection device according to claim 1, characterized in that: In the first state, the top ends of the four groups of baffles (17) are arranged to be inclined outward.

3. A municipal pavement concrete strength detection device according to claim 1, characterized in that: The bottom end of the outer wall of the screw rod (2) is fixedly connected to a first bevel gear (6); the upper surface of the workbench (1) is fixedly mounted with a first support seat (7); the outer wall of the first support seat (7) is rotatably connected to a first rotating rod (8) from left to right; the left and right ends of the first rotating rod (8) are respectively mounted with second bevel gears (9), and the second bevel gear (9) is meshingly connected with the outer wall of the first bevel gear (6).

4. A municipal pavement concrete strength detection device according to claim 3, characterized in that: A second support seat (11) is installed on the upper surface of the workbench (1); a second rotating rod (12) is rotatably connected to the outer wall of the second support seat (11); a second gear (13) is fixedly connected to the outer wall of the second rotating rod (12); a motor (14) is installed on the side wall of the second support seat (11); an output end of the motor (14) is connected to the second rotating rod (12); a first gear (10) is fixedly installed on the outer wall of the first rotating rod (8), and the first gear (10) is meshingly connected to the outer wall of the second gear (13).

5. A municipal pavement concrete strength detection device according to claim 1, characterized in that: A concrete sample (18) is placed on the upper surface of the testing platform (16).

6. A municipal pavement concrete strength detection device according to claim 5, characterized in that: The detection unit comprises a vertical plate (19) vertically mounted on the rear side of the upper surface of the workbench (1), a mounting frame (20) being mounted on the top of the vertical plate (19), a hydraulic cylinder (21) being mounted on the top of the mounting frame (20), and a pressure plate (22) being mounted on the output end of the hydraulic cylinder (21).

7. A municipal pavement concrete strength detection device according to claim 6, characterized in that: The pressing plate (22) and the concrete sample (18) are arranged correspondingly up and down.

8. A municipal pavement concrete strength detection device according to claim 1, characterized in that: The baffle (17) is configured as a transparent body.

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