A cold-mix asphalt mixture coating performance testing device

Abstract

The utility model discloses a cold -mixed asphalt mixture wraps over performance testing arrangement, including base and the fixed frame of installation in the top of base, the top of base is installed with the moving guide rail, the surface sliding installation of moving guide rail has the mobile seat, and one end of mobile seat is through the positioning cylinder swing joint bearing seat, and the inside of mobile seat is provided with the adjusting mechanism of angle control to bearing seat, and the other end of mobile seat is provided with the positioning assembly for the locking fixed position of mobile seat, the top of fixed frame is installed with the hydraulic push rod, and the extension end of hydraulic push rod is connected with the installation frame through pressure sensor, and the bottom detachable mounting of installation frame has the detection tooling, the utility model can adjust the asphalt mixture to multiple angle state to the asphalt mixture of different slope state is carried out the rolling intensity or the anti -skid performance test to different slope state, and further improves the asphalt mixture test data accuracy of different slope state.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt mixture testing equipment, specifically a device for testing the coating performance of cold-mix asphalt mixtures. Background Technology

[0002] Cold-mix asphalt mixtures, as an environmentally friendly and energy-saving road material, can be mixed and constructed at room temperature, avoiding the high energy consumption and greenhouse gas emissions of traditional hot-mix asphalt mixtures. However, the performance of cold-mix asphalt mixtures is greatly affected by asphalt emulsifiers, aggregate surface characteristics, and mixing processes. Furthermore, the asphalt coating performance, i.e., the degree of uniform distribution of asphalt on the aggregate surface, directly determines the strength, durability, and water resistance of the mixture.

[0003] However, existing asphalt mixture testing devices mostly perform planar state testing when testing the performance of asphalt-coated asphalt. This makes it inconvenient to test the compaction strength or skid resistance of asphalt mixtures under different slope conditions according to requirements, resulting in insufficient accuracy of test data for asphalt mixtures under different slope conditions.

[0004] As disclosed in the prior art, Chinese utility model publication CN221377513U discloses a high-temperature performance testing device for asphalt mixtures, comprising a main body and an upper pressure plate. A test seat is fixedly connected to the upper side of the main body, a heating device is installed inside the test seat, an installation plate is fixedly connected to the inner side of the test seat, a base is fixedly connected to the upper side of the installation plate, and a pressing mechanism is provided on the outside of the upper pressure plate. The pressing mechanism includes a fixing block, a spring, and a vertical plate is fixedly connected to the upper side of the main body, an installation seat is fixedly connected to the lower side of the vertical plate, an electric telescopic rod is installed on the lower side of the installation seat, and a pressure testing mechanism is provided on the lower side of the electric telescopic rod. The pressure testing mechanism includes a connecting plate and a filing plate.

[0005] The cited patent reveals the aforementioned problems in the prior art, therefore we need to propose a testing device for the coating performance of cold-mix asphalt mixtures. Utility Model Content

[0006] The purpose of this invention is to provide a testing device for the coating performance of cold-mix asphalt mixtures, which can adjust the asphalt mixture at various angles to test the compaction strength or skid resistance of asphalt mixtures with different slopes, thereby improving the accuracy of test data for asphalt mixtures with different slopes and solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides: a cold-mix asphalt mixture coating performance testing device, comprising a base and a fixed frame mounted on the top of the base; a movable guide rail is mounted on the top of the base, a movable seat is slidably mounted on the surface of the movable guide rail, one end of the movable seat is movably connected to a bearing seat through a positioning cylinder, and a mold frame for assisting in the forming of asphalt mixture is provided on the top of the bearing seat; an adjustment mechanism for controlling the angle of the bearing seat is provided inside the movable seat; a positioning component for locking and fixing the position of the movable seat is provided at the other end of the movable seat; a hydraulic push rod is mounted on the top of the fixed frame, the extended end of the hydraulic push rod is connected to an installation frame through a pressure sensor, and a testing fixture is detachably mounted on the bottom of the installation frame.

[0008] Preferably, the positioning component includes: connecting blocks connected to both sides of one end of the movable seat, and a locking rod threaded onto the surface of the connecting blocks; wherein, the two sides of the movable guide rail are provided with limiting tooth grooves on the surface of the base, and a positioning tooth plate is rotatably mounted on the bottom of the locking rod, and the bottom tooth surface of the positioning tooth plate is configured to cooperate with the limiting tooth groove.

[0009] Preferably, a positioning shaft is connected to the bottom of one end of the bearing seat, and the surface of the positioning shaft is rotatably connected to the inner wall of the positioning cylinder.

[0010] Preferably, the adjustment mechanism includes: a guide rod installed inside the movable seat, and a movable block slidably connected to the surface of the guide rod; wherein, an electric push rod is embedded in the bottom of the movable seat, and the extended end of the electric push rod is connected to the surface of the movable block.

[0011] Preferably, a connecting plate is movably connected to the top of the movable block, and a fixing plate is fixedly connected to the bottom of the bearing seat, with the fixing plate movably connected to the other end of the connecting plate.

[0012] Preferably, auxiliary telescopic rods are installed on both sides of the hydraulic push rod at the top of the fixed frame, and the extended ends of the auxiliary telescopic rods are connected to the surface of the mounting frame.

[0013] Preferably, the pressure sensor is installed at the extended end of the hydraulic push rod, and the detection end of the pressure sensor is connected to the top center of the mounting frame.

[0014] Preferably, the surface of the mounting frame is provided with mounting holes that mate with the testing fixture, and the bottom of the testing fixture is provided with a rolling roller.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model utilizes a combination of structures including a base, a movable seat, a bearing seat, a fixed frame, an installation frame, a testing fixture, a positioning component, and an adjustment mechanism. The adjustment mechanism's electric push rod extends to move the movable block, controlling the connecting plate to raise the bearing seat angle. Combined with the positioning cylinder and positioning shaft, the bearing seat's tilt angle can be flexibly adjusted, supporting the molding and testing of asphalt mixtures in horizontal or inclined states. It comprehensively analyzes the impact of different paving angles on the coating effect, enhancing the test's applicability. Furthermore, the sliding design of the movable guide rail and movable seat allows for position adjustment of the asphalt mixture on the bearing seat. The locking rod of the positioning component controls the engagement structure between the positioning tooth plate and the limiting tooth groove, quickly fixing the movable seat's position and preventing slippage during testing. Through a hydraulic push rod, auxiliary telescopic rod, pressure sensor, and detachable testing fixture, the pressure magnitude and application method can be precisely controlled to simulate different compaction conditions, ensuring test data is consistent with actual construction scenarios and improving the accuracy of asphalt mixture coating performance evaluation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the support structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation frame structure of this utility model.

[0021] In the diagram: 1. Base; 2. Moving guide rail; 3. Limiting tooth groove; 4. Moving seat; 5. Connecting block; 6. Locking rod; 7. Positioning tooth plate; 8. Guide rod; 9. Electric push rod; 10. Moving block; 11. Connecting plate; 12. Fixing plate; 13. Positioning cylinder; 14. Positioning shaft; 15. Bearing seat; 16. Mold frame; 17. Fixing frame; 18. Hydraulic push rod; 19. Pressure sensor; 20. Mounting frame; 21. Auxiliary telescopic rod; 22. Inspection fixture; 23. Roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model provides: a testing device for the coating performance of cold-mix asphalt mixture, including a base 1 and a fixed frame 17 installed on the top of the base 1; a movable guide rail 2 is installed on the top of the base 1, and a movable seat 4 is slidably installed on the surface of the movable guide rail 2. One end of the movable seat 4 is movably connected to a bearing seat 15 through a positioning cylinder 13. A mold frame 16 for assisting in the forming of asphalt mixture is provided on the top of the bearing seat 15; an adjustment mechanism for controlling the angle of the bearing seat 15 is provided inside the movable seat 4; a positioning component for locking and fixing the position of the movable seat 4 is provided on the other end of the movable seat 4; a hydraulic push rod 18 is installed on the top of the fixed frame 17, and the extended end of the hydraulic push rod 18 is connected to an installation frame 20 through a pressure sensor 19. A testing fixture 22 is detachably installed on the bottom of the installation frame 20.

[0024] It is worth noting that, through the coordinated arrangement of structures such as base 1, movable seat 4, bearing seat 15, fixed frame 17, mounting frame 20, testing fixture 22, positioning components and adjustment mechanism, the asphalt mixture can be adjusted to various angle states, thereby conducting compaction strength or skid resistance tests on asphalt mixtures with different slope states, further improving the accuracy of test data for asphalt mixtures with different slope states.

[0025] Specifically, the positioning assembly includes: connecting blocks 5 connected to both sides of one end of the movable base 4, and locking rods 6 threaded onto the surface of the connecting blocks 5; wherein, the two sides of the movable guide rail 2 are provided with limiting tooth grooves 3 on the surface of the base 1, and a positioning tooth plate 7 is rotatably mounted on the bottom of the locking rod 6, the bottom tooth surface of the positioning tooth plate 7 being configured to cooperate with the limiting tooth grooves 3. A positioning shaft 14 is connected to the bottom of one end of the bearing seat 15, and the surface of the positioning shaft 14 is rotatably connected to the inner wall of the positioning cylinder 13.

[0026] Furthermore, through the sliding design of the moving guide rail 2 and the moving seat 4, the position of the asphalt mixture on the bearing seat 15 can be adjusted. In conjunction with the locking rod 6 of the positioning component, the meshing structure of the positioning tooth plate 7 and the limiting tooth groove 3 is controlled, which quickly fixes the position of the moving seat 4, avoids slippage during the test, reduces data errors, and improves the accuracy of the test data.

[0027] The adjustment mechanism includes a guide rod 8 installed inside the movable base 4 and a movable block 10 slidably connected to the surface of the guide rod 8; wherein, an electric push rod 9 is embedded in the bottom of the movable base 4, and the extended end of the electric push rod 9 is connected to the surface of the movable block 10. A connecting plate 11 is movably connected to the top of the movable block 10, and a fixing plate 12 is fixedly connected to the bottom of the support base 15, and the fixing plate 12 is movably connected to the other end of the connecting plate 11.

[0028] Furthermore, by extending the electric push rod 9 of the adjustment mechanism to move the position of the moving block 10, the connecting plate 11 is controlled to raise the angle of the bearing seat 15. This, combined with the positioning cylinder 13 and positioning shaft 14, allows for flexible adjustment of the inclination angle of the bearing seat 15, supporting the molding and testing of the mixture in horizontal or inclined states. This enables comprehensive analysis of the impact of different paving angles on the coating effect, enhancing the applicability of the test. The push rod is an electric push rod with a self-locking function, such as the PA-14P series, Jiechang JCB1 series, or Kaidi KDP-50 electric push rod.

[0029] Auxiliary telescopic rods 21 are installed on both sides of the hydraulic push rod 18 at the top of the fixed frame 17, and the extended ends of the auxiliary telescopic rods 21 are connected to the surface of the mounting frame 20. A pressure sensor 19 is installed at the extended end of the hydraulic push rod 18, and the detection end of the pressure sensor 19 is connected to the top center position of the mounting frame 20. The surface of the mounting frame 20 has mounting holes that mate with the detection fixture 22, and a rolling roller 23 is provided at the bottom of the detection fixture 22.

[0030] The system, through the hydraulic push rod 18 in conjunction with the auxiliary telescopic rod 21, pressure sensor 19, and detachable testing fixture 22, can precisely control the pressure magnitude and application method, simulate different compaction conditions, ensure that the test data is consistent with the actual construction scenario, and improve the accuracy of asphalt mixture coating performance evaluation. The pressure sensor 19 is externally connected to the data terminal testing fixture 22; quick replacement is possible through mounting holes to adapt to different testing requirements such as rolling and shearing. The fixing frame 17 is a supporting structure for the installation of the hydraulic push rod 18 and the auxiliary telescopic rod 21, ensuring the stability of the overall structure.

[0031] In use, the testing fixture 22 is installed at the bottom of the mounting frame 20 as needed, and the moving block 10 is extended by the electric push rod 9, pushing up one end of the bearing seat 15 connected by the connecting plate 11 to achieve different slope control of the asphalt mixture on the bearing seat 15. At this time, the workpiece can be placed on the asphalt mixture to conduct a workpiece anti-slip test under gravity. After the angle adjustment is completed, the position of the bearing seat 15 can be adjusted according to the testing requirements. During adjustment, the moving seat 4 moves on the moving guide rail 2 by moving the bearing seat 15 to achieve adjustment. The locking rod 6 is rotated to press the positioning tooth plate 7 into the limiting tooth groove 3, thereby achieving tooth meshing and positioning, ensuring the stability of the structure during testing. Finally, through the cooperation of the hydraulic push rod 18 and the auxiliary telescopic rod 21, the mounting frame 20 with the testing fixture 22 is pushed onto the asphalt mixture on the bearing seat 15 to realize the testing operation of roller compression strength or shear strength. It can be connected to an external data terminal with the pressure sensor 19 to observe and record the data under roller compression or shear conditions, ensuring the accuracy of the asphalt mixture coating performance test data.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the coating performance of cold-mix asphalt mixtures, characterized in that, include: The base (1) and the mounting bracket (17) mounted on the top of the base (1); The top of the base (1) is equipped with a movable guide rail (2), and a movable seat (4) is slidably installed on the surface of the movable guide rail (2). One end of the movable seat (4) is movably connected to the bearing seat (15) through the positioning cylinder (13). The top of the bearing seat (15) is provided with a mold frame (16) for assisting in the forming of asphalt mixture. The movable seat (4) is equipped with an adjustment mechanism for controlling the angle of the support seat (15); The other end of the movable seat (4) is provided with a positioning component for locking and fixing the position of the movable seat (4); A hydraulic push rod (18) is installed on the top of the fixed frame (17). The extended end of the hydraulic push rod (18) is connected to the mounting frame (20) through a pressure sensor (19). A detection fixture (22) is detachably installed on the bottom of the mounting frame (20).

2. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: The positioning component includes: The connecting blocks (5) connected to both sides of one end of the movable base (4), and A locking rod (6) is threaded onto the surface of the connecting block (5); Among them, the movable guide rail (2) has a limiting tooth groove (3) on both sides of the base (1), and the bottom of the locking rod (6) is rotatably mounted with a positioning tooth plate (7), and the bottom tooth surface of the positioning tooth plate (7) is matched with the limiting tooth groove (3).

3. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: The bottom of one end of the bearing seat (15) is connected to a positioning shaft (14), and the surface of the positioning shaft (14) is rotatably connected to the inner wall of the positioning cylinder (13).

4. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: The adjustment mechanism includes: The guide rod (8) installed inside the movable seat (4), and A sliding block (10) is slidably connected to the surface of the guide rod (8); The bottom of the movable seat (4) is fitted with an electric push rod (9), and the extended end of the electric push rod (9) is connected to the surface of the movable block (10).

5. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 4, characterized in that: The top of the movable block (10) is movably connected to a connecting plate (11), and the bottom of the bearing seat (15) is fixedly connected to a fixing plate (12), which is movably connected to the other end of the connecting plate (11).

6. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: Auxiliary telescopic rods (21) are installed on both sides of the hydraulic push rod (18) at the top of the fixed frame (17), and the extended ends of the auxiliary telescopic rods (21) are connected to the surface of the mounting frame (20).

7. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: The pressure sensor (19) is installed at the extended end of the hydraulic push rod (18), and the detection end of the pressure sensor (19) is connected to the top center of the mounting frame (20).

8. The device for testing the coating performance of cold-mix asphalt mixtures according to claim 1, characterized in that: The surface of the mounting frame (20) is provided with mounting holes that cooperate with the testing fixture (22), and the bottom of the testing fixture (22) is provided with a rolling roller (23).

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