Asphalt concrete pressure detection device

Abstract

An asphalt concrete pressure detection device belongs to the technical field of road engineering material performance detection. The transverse plate is fixedly connected with the inner wall of the detection bin, a long hole is formed in the transverse plate, a first sliding groove is formed in the side wall of the transverse plate, the first hydraulic cylinder is fixed to the transverse plate, the first hydraulic cylinder is connected with the sliding table, the sliding table is connected with the long hole, side plates are arranged on the two sides of the sliding table, and the side plates are in sliding connection with the first sliding groove. The second hydraulic cylinder is fixed to the sliding table, the second hydraulic cylinder penetrates through the long hole and is connected with the pressure sensor, the pressure sensor is connected with the base, and the base is connected with the rolling wheel. By means of a stable fixing mode, stable sliding table movement, safe and convenient observation operation, effective fragment protection and a rapid test block replacement mechanism, the accuracy and the reliability of a detection result are improved, the operation process is optimized, the use cost is reduced, and the detection efficiency is improved. The practical value and technical advantages in the field of asphalt concrete pressure detection are fully shown.

Description

Technical Field

[0001] This utility model belongs to the field of road engineering material performance testing technology, specifically an asphalt concrete pressure testing device. Background Technology

[0002] Asphalt concrete, often simply referred to as asphalt concrete, is an important building material widely used in road engineering and other fields. It is made by carefully selecting mineral materials with a certain gradation, such as crushed stone, crushed gravel, stone chips or sand, and mineral powder, and mixing them with road asphalt materials in a specific proportion under strictly controlled conditions. This mixture plays a key role in many projects such as road paving and airport runway construction due to its excellent performance. In the production and application of asphalt concrete, accurate evaluation of its performance is crucial, and pressure testing is one of the important steps in measuring the performance of asphalt concrete.

[0003] A search revealed a utility model patent in the prior art, authorized by publication number CN219777370U, published on September 29, 2023, entitled "An Asphalt Concrete Pressure Testing Machine." While this patent addresses the issue of "detecting pressure data of asphalt concrete pavement under dynamic pressure, exploring the influence of different component contents on asphalt concrete performance, and also detecting the service life of asphalt concrete pavement under dynamic pressure at the maximum static pressure value," the device directly places the asphalt concrete test block on the pressure table surface without effective fixing measures. During pressure testing, this can easily lead to deviation, resulting in inaccurate data and affecting the accurate assessment of asphalt concrete performance. Furthermore, the hydraulic cylinder is directly fixed to the slide table, which uses a sliding connection with the top frame. When the hydraulic cylinder operates, it generates a large reaction force, which can easily cause the slide table to derail, leading to tilting of the hydraulic cylinder. This, in turn, affects the normal operation of the equipment and the reliability of the test results, failing to achieve the desired testing effect. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides an asphalt concrete pressure testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an asphalt concrete pressure testing device, comprising a testing chamber, a horizontal plate, a hydraulic cylinder I, a slide table, a side plate, a hydraulic cylinder II, a pressure sensor, a base, rollers, a placement mechanism, and two clamping mechanisms.

[0006] A placement mechanism is provided on the bottom surface of the testing chamber. Clamping mechanisms are provided on both sides of the placement mechanism, symmetrically arranged. A horizontal plate is provided above the placement mechanism and is fixedly connected to the inner wall of the testing chamber. An elongated hole is opened at the upper end of the horizontal plate along the horizontal direction. A sliding groove is opened on each of the two side walls of the horizontal plate. A hydraulic cylinder is horizontally fixed to the horizontal plate, and its telescopic end is fixedly connected to a sliding table. The sliding table is slidably connected to the inner wall of the elongated hole. Side plates are fixed on both sides of the sliding table, and each side plate is slidably connected to its corresponding sliding groove. A second hydraulic cylinder has its fixed end fixed to the sliding table, and its telescopic end passes through the elongated hole and is fixedly connected to a pressure sensor. The pressure sensor is fixedly connected to a base, and the base is rotatably connected to a roller.

[0007] The placement mechanism includes a tray and multiple limiting posts;

[0008] The lower end of the tray is vertically fixed with multiple limiting posts, and the bottom surface of the detection chamber is provided with multiple placement slots that correspond one-to-one with the limiting posts. The multiple limiting posts are inserted and fixed into the corresponding placement slots.

[0009] Each clamping mechanism includes a threaded rod, a motor, a moving column, a connecting rod, a fixed plate, two baffle plates, and multiple fixed columns;

[0010] The detection chamber has a second sliding groove. One end of the threaded rod is rotatably connected to the inner wall of the second sliding groove, and the other end of the threaded rod is fixedly connected to the motor output shaft. The motor is fixed on the detection chamber. The lower end of the moving column is threadedly connected to the threaded rod and is limited and slidably disposed in the second sliding groove. The moving column is fixedly connected to the connecting rod. The connecting rod is fixedly connected to one end face of the fixed plate. Both sides of the fixed plate are fixed with shielding plates, and multiple fixed columns are evenly distributed on the other end face of the fixed plate.

[0011] The front end of the testing chamber is equipped with a sealed door, and the sealed door is equipped with an observation window.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Compared with existing technologies, this asphalt concrete pressure testing device has the following advantages:

[0014] 1. Stable and secure specimen fixing: This device uses two symmetrical clamping mechanisms. The motor drives the threaded rod to rotate, which moves the moving column, connecting rod and fixing plate. Finally, the asphalt concrete specimen is firmly fixed on the tray by multiple fixing columns on the fixing plate, which effectively prevents the specimen from sliding during the test and ensures the accuracy of the test results.

[0015] 2. Smooth Slide Movement: The slide of this device is slidably connected to the inner wall of the elongated hole on the horizontal plate, and the side plates on both sides of the slide are slidably connected to the corresponding slide grooves, providing stable guidance for the slide and ensuring the smooth movement of the slide. This avoids the slide from derailing due to the large reaction force generated when the hydraulic cylinder is working, ensuring the normal operation of the equipment and the reliability of the test results.

[0016] 3. Safe and convenient operation and observation: The front face of the detection chamber of this device is equipped with a sealed door, and the sealed door is equipped with an observation window, which allows the operator to observe the internal operation of the detection chamber without opening the sealed door, thus ensuring the safety of the operator.

[0017] 4. Preventing debris from splashing: Each fixed plate of this device is equipped with a shield. When the asphalt concrete test block produces fragments after the test, the shield can cover the fragments to prevent them from splashing everywhere and facilitate subsequent cleaning.

[0018] 5. Quick test block replacement: The tray of this device is vertically fixed with multiple limiting posts at the bottom. The bottom surface of the test chamber is provided with multiple placement slots that correspond one-to-one with the limiting posts. The multiple limiting posts are inserted and fixed to the corresponding placement slots. When a new asphalt concrete test block needs to be replaced, simply pull up the tray so that the multiple limiting posts are removed from the placement slots, and the tray can be easily taken out for quick replacement, which greatly improves the testing efficiency and reduces the testing preparation time.

[0019] In summary, this utility model, with its stable fixing method, smooth sliding table movement, safe and convenient observation and operation, effective fragment protection, and rapid test block replacement mechanism, not only improves the accuracy and reliability of test results, but also optimizes the operation process and reduces the cost of use, fully demonstrating its practical value and technical advantages in the field of asphalt concrete pressure testing. Attached Figure Description

[0020] Figure 1 This is a front view of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection relationship between the fixing plate, the shielding plate, and the fixing column of this utility model;

[0023] Figure 4 This is a schematic diagram showing the connection relationship between the slide, side plate, and hydraulic cylinder of this utility model. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0025] This embodiment describes an asphalt concrete pressure testing device, including a testing chamber 1, a horizontal plate 11, a hydraulic cylinder 12, a slide table 13, a side plate 14, a hydraulic cylinder 15, a pressure sensor 16, a base 17, a roller 18, a placement mechanism, and two clamping mechanisms.

[0026] A placement mechanism is provided on the bottom surface of the detection chamber 1. A clamping mechanism is provided on both sides of the placement mechanism. The two clamping mechanisms are symmetrically arranged. A horizontal plate 11 is provided above the placement mechanism. The horizontal plate 11 is fixedly connected to the inner wall of the detection chamber 1. An elongated hole is opened at the upper end of the horizontal plate 11 in the horizontal direction. A sliding groove is opened on each side wall of the horizontal plate 11. A hydraulic cylinder 12 is horizontally fixed on the horizontal plate 11. The telescopic end of the hydraulic cylinder 12 is fixedly connected to the slide table 13. The slide table 13 is slidably connected to the inner wall of the elongated hole. Side plates 14 are fixed on both sides of the slide table 13. Each side plate 14 is slidably connected to the corresponding sliding groove. The fixed end of the hydraulic cylinder 15 is fixed on the slide table 13. The telescopic end of the hydraulic cylinder 15 passes through the elongated hole and is fixedly connected to the pressure sensor 16. The pressure sensor 16 is fixedly connected to the base 17. The base 17 is rotatably connected to the roller 18.

[0027] The placement mechanism includes a tray 2 and multiple limiting posts 3;

[0028] The lower end of the tray 2 is vertically fixed with multiple limiting posts 3, and the bottom surface of the detection chamber 1 is provided with multiple placement slots that correspond one-to-one with the limiting posts 3. The multiple limiting posts 3 are inserted and fixed to the corresponding placement slots.

[0029] Each clamping mechanism includes a threaded rod 4, a motor 5, a moving column 6, a connecting rod 7, a fixing plate 8, two baffle plates 9, and multiple fixing columns 10;

[0030] The detection chamber 1 has a second sliding groove. One end of the threaded rod 4 is rotatably connected to the inner wall of the second sliding groove, and the other end of the threaded rod 4 is fixedly connected to the output shaft of the motor 5. The motor 5 is fixed on the detection chamber 1. The lower end of the moving column 6 is threadedly connected to the threaded rod 4 and is limited and slidably disposed in the second sliding groove. The moving column 6 is fixedly connected to the connecting rod 7. The connecting rod 7 is fixedly connected to one end face of the fixing plate 8. Both sides of the fixing plate 8 are fixed with shielding plates 9, and multiple fixing columns 10 are evenly distributed on the other end face of the fixing plate 8.

[0031] The front end of the detection chamber 1 is provided with a sealing door 19, and the sealing door 19 is provided with an observation window 20.

[0032] Before the test begins, open the sealing door 19 at the front of the test chamber 1 and place the asphalt concrete test block on the tray 2. Then, start the motors 5 on the two clamping mechanisms simultaneously. The motors 5 drive the threaded rod 4 to rotate. Since the lower end of the moving column 6 is threadedly connected to the threaded rod 4 and is limited by the slide groove 2, the moving column 6 will move along the slide groove 2, thereby driving the connecting rod 7 and the fixing plate 8 to move. When the multiple fixing columns 10 on the two fixing plates 8 abut against both sides of the asphalt concrete test block, stop the motor 5. The design of the multiple fixing columns 10 increases the contact area with the test block and increases the friction, which can firmly fix the test block on the tray 2, prevent the test block from sliding during the test, and ensure the accuracy of the test results. Close the sealing door 19. The observation window 20 on the sealing door 19 is equipped with an explosion-proof transparent plate (such as a polycarbonate plate), which allows the operator to observe the internal operation of the test chamber 1 without opening the sealing door 19, ensuring the safety of the operator.

[0033] After the test block is fixed, hydraulic cylinder 2 15 is activated. The telescopic end of hydraulic cylinder 2 15 passes through the elongated hole on the horizontal plate 11, driving the base 17 and roller 18 to descend until the roller 18 is in contact with the upper surface of the asphalt concrete test block. Then, hydraulic cylinder 12 is activated. The telescopic end of hydraulic cylinder 12 pushes the slide table 13 to slide on the inner wall of the elongated hole. The side plates 14 on both sides of the slide table 13 slide in the corresponding slide groove 1, providing stable guidance for the slide table 13 and ensuring the smooth movement of the slide table 13. The slide table 13 drives hydraulic cylinder 2 15, pressure sensor 16, base 17 and roller 18 to move forward. During the movement, the roller 18 applies pressure to the asphalt concrete test block. The pressure sensor 16 collects pressure data in real time and transmits the data to an external control system or display device so that the operator can record and analyze it to obtain the pressure performance parameters of the asphalt concrete test block.

[0034] After the test is completed, the asphalt concrete test block may produce fragments. At this time, the shielding plate 9 on each fixing plate 8 plays a role in shielding the test block fragments and preventing them from flying around, which facilitates subsequent cleaning. When a new asphalt concrete test block needs to be replaced, simply pull up the tray 2 to make the multiple limiting posts 3 leave the placement slot, and the tray 2 can be easily taken out for quick replacement, which greatly improves the testing efficiency and reduces the testing preparation time.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An asphalt concrete pressure testing device, characterized in that: It includes a detection chamber (1), a horizontal plate (11), a hydraulic cylinder one (12), a slide table (13), a side plate (14), a hydraulic cylinder two (15), a pressure sensor (16), a base (17), a roller (18), a placement mechanism, and two clamping mechanisms; The bottom surface of the testing chamber (1) is provided with a placement mechanism. Clamping mechanisms are provided on both sides of the placement mechanism, and the two clamping mechanisms are symmetrically arranged. A horizontal plate (11) is provided above the placement mechanism. The horizontal plate (11) is fixedly connected to the inner wall of the testing chamber (1). An elongated hole is opened at the upper end of the horizontal plate (11) in the horizontal direction. Sliding grooves are opened on both sides of the horizontal plate (11). A hydraulic cylinder (12) is horizontally fixed on the horizontal plate (11). The telescopic end of the hydraulic cylinder (12) is fixedly connected to the sliding table (13). The slide (13) is slidably connected to the inner wall of the elongated hole. Side plates (14) are fixed on both sides of the slide (13). Each side plate (14) is slidably connected to the corresponding slide groove. The fixed end of the hydraulic cylinder (15) is fixed on the slide (13). The telescopic end of the hydraulic cylinder (15) passes through the elongated hole and is fixedly connected to the pressure sensor (16). The pressure sensor (16) is fixedly connected to the base (17). The base (17) is rotatably connected to the roller (18).

2. The asphalt concrete pressure testing device according to claim 1, characterized in that: The placement mechanism includes a tray (2) and multiple limiting posts (3); The lower end of the tray (2) is vertically fixed with multiple limiting posts (3), and the bottom surface of the detection chamber (1) is provided with multiple placement slots corresponding to the limiting posts (3). The multiple limiting posts (3) are inserted and fixed to the corresponding placement slots.

3. The asphalt concrete pressure testing device according to claim 1, characterized in that: Each clamping mechanism includes a threaded rod (4), a motor (5), a moving column (6), a connecting rod (7), a fixing plate (8), two baffles (9), and multiple fixing columns (10); The detection chamber (1) has a second sliding groove. One end of the threaded rod (4) is rotatably connected to the inner wall of the second sliding groove, and the other end of the threaded rod (4) is fixedly connected to the output shaft of the motor (5). The motor (5) is fixed on the detection chamber (1). The lower end of the moving column (6) is threadedly connected to the threaded rod (4) and is limited and slidably disposed in the second sliding groove. The moving column (6) is fixedly connected to the connecting rod (7). The connecting rod (7) is fixedly connected to one end face of the fixing plate (8). Both sides of the fixing plate (8) are fixed with shielding plates (9), and multiple fixing columns (10) are evenly distributed on the other end face of the fixing plate (8).

4. The asphalt concrete pressure testing device according to claim 1, characterized in that: The front end of the detection chamber (1) is provided with a sealing door (19), and the sealing door (19) is provided with an observation window (20).

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