A low-temperature split test device for fiber asphalt mixture

Abstract

The utility model relates to a splitting test device technical field discloses a kind of low-temperature splitting test devices of fiber asphalt mixture, including base, base top is fixedly connected with workbench, and the both ends of workbench top are fixedly connected with positioning rod, and the top of two positioning rods is fixedly connected with same top plate, and the middle of top plate top is fixedly connected with hydraulic cylinder, and the circumferential surface of two positioning rods is slidably sleeved with same lifting plate, and the both ends of lifting plate are evenly provided with the round hole compatible with positioning rod, and the both sides of lifting plate bottom are provided with buckle mechanism, and buckle mechanism includes the rectangular frame fixedly connected with the one end of lifting plate bottom, and same slide rod is fixedly connected between the both ends in rectangular frame interior. The utility model, realize that mixed material broken material on rotary plate does not need manual cleaning, automatically complete broken material dumping collection, substantially reduce cleaning time, improve the overall efficiency of test operation.

Description

Technical Field

[0001] This utility model relates to the technical field of splitting test devices, and in particular to a low-temperature splitting test device for fiber-reinforced asphalt mixtures. Background Technology

[0002] In the field of road engineering, fiber-reinforced asphalt mixtures are widely used in pavement structures due to their excellent crack resistance and durability. However, in low-temperature environments, asphalt mixtures are prone to shrinkage cracking due to temperature stress, which directly affects the service life of the pavement and driving safety. Therefore, accurate evaluation of the low-temperature crack resistance of fiber-reinforced asphalt mixtures is crucial.

[0003] Currently, existing low-temperature splitting test devices are used in practical applications to simulate the complex load changes that road surfaces may bear under different low-temperature conditions. Fiber-bonded asphalt mixtures at different low temperatures are placed on the test device and crushed by compression. The quality is judged based on the pressure and displacement. However, after each test, the broken asphalt mixture is scattered on the inspection table, requiring users to clean it up, which increases the difficulty of cleaning. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-temperature splitting test device for fiber-reinforced asphalt mixtures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-temperature splitting crack testing device for fiber-reinforced asphalt mixture includes a base, a workbench fixedly connected to the top of the base, and positioning rods fixedly connected to both ends of the top of the workbench. A top plate is fixedly connected to the top of the two positioning rods, and a hydraulic cylinder is fixedly connected to the middle of the top of the top plate. A lifting plate is slidably fitted onto the circumferential surface of the two positioning rods, and both ends of the lifting plate have circular holes adapted to the positioning rods. A locking mechanism is provided on both sides of the bottom of the lifting plate. The locking mechanism includes a rectangular frame fixedly connected to one end of the bottom of the lifting plate, and a sliding rod fixedly connected between the two ends inside the rectangular frame. A slider is slidably fitted onto the circumferential surface of the sliding rod, and a circular hole adapted to the sliding rod is opened on the slider. A spring is fitted onto the end of the sliding rod away from the center of the lifting plate, and a hook is fixedly connected to the bottom of the slider. Through the cooperation of the locking mechanism and the unloading mechanism, the rotating plate automatically tilts to unload and then resets after each test.

[0007] Preferably, a pressure sensor is fixedly connected to the output end of the hydraulic cylinder through the top plate, and the bottom of the pressure sensor is fixedly connected to the top of the lifting plate, and an upper pressure block is fixedly connected to the middle of the bottom of the lifting plate.

[0008] Preferably, a material unloading mechanism is provided at the middle of the top of the workbench. The material unloading mechanism includes a rotating plate rotatably connected to one side of the top of the workbench, and a lower pressing block is fixedly connected at the middle of the top of the rotating plate. The lower pressing block is adapted to the upper pressing block. A barrier is fixedly connected to the top edge of the rotating plate, and L-shaped rods are fixedly connected to both sides of the outer wall of the barrier.

[0009] Preferably, the two L-shaped rods are respectively adapted to adjacent hooks.

[0010] Preferably, a collection mechanism is provided near the unloading mechanism on the workbench, and the collection mechanism includes a U-shaped frame fixedly connected to one side of the workbench, with grooves at both ends of the U-shaped frame and an inclined surface in the middle of the U-shaped frame. The same U-shaped plate is slidably connected between the two grooves, and a collection frame is provided in the middle of the bottom of the U-shaped plate. Handles are provided on both sides of the U-shaped plate. The collection mechanism allows for the collection of scrap materials, making it convenient for users to handle without requiring users to touch the scrap materials.

[0011] Preferably, a displacement gauge is fixedly connected to one side of the top of the lifting plate, and the bottom of the displacement gauge penetrates the lifting plate and is adapted to the worktable.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Due to the adoption of a snap-fit ​​mechanism and a discharge mechanism, when the lifting plate lowers with the upper pressure block to compress the mixture, the hook will also lock onto the L-shaped rod at the end. When the lifting plate rises, it automatically tilts the rotating plate, causing the debris on the rotating plate to pour into the collection box. This effectively solves the problem of inconvenient debris cleaning mentioned in the background technology, and thus realizes the automatic completion of debris dumping and collection without manual cleaning of the mixture debris on the rotating plate, greatly reducing cleaning time and improving the overall efficiency of the test operation.

[0014] 2. By setting up a collection mechanism, it works in conjunction with the unloading mechanism to collect debris. Users only need to use the handle to remove the U-shaped plate for dumping, thus improving the debris cleaning capability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the low-temperature splitting test device for fiber-reinforced asphalt mixture proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the top plate of a low-temperature splitting test device for fiber-reinforced asphalt mixtures proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the snap-fit ​​mechanism of a low-temperature splitting test device for fiber-reinforced asphalt mixtures proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the collection mechanism of a low-temperature splitting test device for fiber-reinforced asphalt mixtures proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the collection mechanism of a low-temperature splitting test device for fiber-reinforced asphalt mixtures proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Workbench; 201. Positioning rod; 202. Top plate; 203. Hydraulic cylinder; 3. Lifting plate; 301. Pressure sensor; 302. Displacement gauge; 303. Upper pressure block; 4. Buckling mechanism; 401. Rectangular frame; 402. Slide rod; 403. Spring; 404. Slider; 405. Hook; 5. Collection mechanism; 501. U-shaped frame; 502. Slide groove; 503. U-shaped plate; 504. Collection frame; 505. Handle; 6. Unloading mechanism; 601. Rotating plate; 602. Lower pressure block; 603. Enclosure; 604. L-shaped rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-5 A low-temperature splitting crack testing device for fiber-reinforced asphalt mixture includes a base 1, a workbench 2 fixedly connected to the top of the base 1, and positioning rods 201 fixedly connected to both ends of the top of the workbench 2. A top plate 202 is fixedly connected to the top of the two positioning rods 201, and a hydraulic cylinder 203 is fixedly connected to the middle of the top of the top plate 202. A lifting plate 3 is slidably fitted onto the circumferential surface of the two positioning rods 201, and both ends of the lifting plate 3 have circular holes adapted to the positioning rods 201. A latching mechanism 4 is provided on both sides of the bottom of the lifting plate 3, and the latching mechanism 4 includes... A rectangular frame 401 is fixedly connected to one end of the bottom of the lifting plate 3, and the same slide rod 402 is fixedly connected between the two ends inside the rectangular frame 401. The same slider 404 is slidably sleeved on the circumferential surface of the slide rod 402. The slider 404 has a round hole that matches the slide rod 402. A spring 403 is sleeved on the end of the slide rod 402 away from the center of the lifting plate 3. A hook 405 is fixedly connected to the bottom of the slider 404. The hook 405 can cooperate with the L-shaped rod 604. When the hydraulic cylinder 203 lifts the lifting plate 3, the rotating plate 601 can tilt to unload the material.

[0023] In this utility model, the output end of the hydraulic cylinder 203 is fixedly connected to the pressure sensor 301 through the top plate 202, and the bottom of the pressure sensor 301 is fixedly connected to the top of the lifting plate 3. The upper pressure block 303 is fixedly connected to the middle of the bottom of the lifting plate 3.

[0024] In this utility model, a material unloading mechanism 6 is provided at the middle of the top of the workbench 2. The material unloading mechanism 6 includes a rotating plate 601 rotatably connected to one side of the top of the workbench 2, and a lower pressing block 602 is fixedly connected at the middle of the top of the rotating plate 601. The lower pressing block 602 is adapted to the upper pressing block 303. A barrier 603 is fixedly connected to the top edge of the rotating plate 601, and L-shaped rods 604 are fixedly connected to both sides of the outer wall of the barrier 603.

[0025] In this utility model, two L-shaped rods 604 are respectively adapted to the adjacent hooks 405. Through the cooperation of the buckling mechanism 4 and the unloading mechanism 6, the broken material on the rotating plate 601 can be automatically dumped.

[0026] In this utility model, a collection mechanism 5 is provided on the workbench 2 near the unloading mechanism 6. The collection mechanism 5 includes a U-shaped frame 501 fixedly connected to one side of the workbench 2. Both ends of the U-shaped frame 501 are provided with sliding grooves 502, and the middle of the U-shaped frame 501 is provided with an inclined surface. The same U-shaped plate 503 is slidably connected between the two sliding grooves 502. A collection frame 504 is provided in the middle of the bottom of the U-shaped plate 503, and handles 505 are provided on both sides of the U-shaped plate 503. The collection mechanism 5 facilitates the collection of broken materials, improves the broken material processing capacity, and saves the user's labor.

[0027] In this utility model, a displacement meter 302 is fixedly connected to one side of the top of the lifting plate 3, and the bottom of the displacement meter 302 penetrates the lifting plate 3 and is adapted to the workbench 2. The displacement meter 302 can detect the length change in the setting direction of the asphalt mixture.

[0028] Working Principle: The device is equipped with a control panel, which is electrically connected to the displacement gauge 302, pressure sensor 301, and the drive component of the hydraulic cylinder 203. During use, the cylindrical asphalt mixture that has undergone cryogenic treatment is placed on the lower pressure block 602. The hydraulic cylinder 203 is activated, causing the lifting plate 3 to descend along with the upper pressure block 303. This causes the upper pressure block 303 and the lower pressure block 602 to compress the asphalt mixture. The pressure sensor 301 detects pressure changes, while the displacement gauge 302 detects the amount of descent of the lifting plate 3. When the asphalt mixture breaks, the controller records the maximum value, and the displacement gauge 302 detects the displacement. These two data points determine the quality of the asphalt mixture. The broken asphalt mixture is located on the rotating plate 601, within the enclosure. Under the shielding of 603, broken material will not enter the workbench 2. As the lifting plate 3 descends, the hooks 405 on both sides will contact the L-shaped rod 604. Due to the inclined surface at the bottom of the hook 405, the hook 405 will automatically retract, compressing the spring 403. When the bottom of the hook 405 moves to the bottom of the L-shaped rod 604, the spring 403 will extend, causing the hook 405 to lock into the bottom of the L-shaped rod 604. When the hydraulic cylinder 203 retracts, the hook 405 will drive the L-shaped rod 604 to rise, causing the rotating plate 601 to rotate and pour the broken material into the collection frame 504 of the collection mechanism 5, improving the processing efficiency of broken material and avoiding manual cleaning. As the rotating plate 601 rotates, the L-shaped rod 604 will separate from the hook 405 and will automatically reset under the action of gravity.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-temperature splitting crack test device for fiber-reinforced asphalt mixtures, comprising a base (1), characterized in that, The base (1) is fixedly connected to a workbench (2) at the top, and both ends of the workbench (2) are fixedly connected to positioning rods (201). The tops of the two positioning rods (201) are fixedly connected to the same top plate (202). A hydraulic cylinder (203) is fixedly connected to the middle of the top of the top plate (202). The two positioning rods (201) are slidably fitted with the same lifting plate (3) on their circumferential surfaces. Both ends of the lifting plate (3) are provided with round holes that are compatible with the positioning rods (201). The bottom sides of the lifting plate (3) are provided with buckling mechanisms. 4) The buckling mechanism (4) includes a rectangular frame (401) fixedly connected to one end of the bottom of the lifting plate (3), and the same slide rod (402) is fixedly connected between the two ends inside the rectangular frame (401). The same slider (404) is slidably sleeved on the circumferential surface of the slide rod (402). A circular hole adapted to the slide rod (402) is opened on the slider (404). A spring (403) is sleeved on one end of the slide rod (402) away from the center of the lifting plate (3). A hook (405) is fixedly connected to the bottom of the slider (404).

2. The low-temperature splitting crack testing device for fiber-reinforced asphalt mixtures according to claim 1, characterized in that, The output end of the hydraulic cylinder (203) is fixedly connected to the pressure sensor (301) through the top plate (202), and the bottom of the pressure sensor (301) is fixedly connected to the top of the lifting plate (3). The upper pressure block (303) is fixedly connected to the middle of the bottom of the lifting plate (3).

3. The low-temperature splitting crack testing device for fiber-reinforced asphalt mixtures according to claim 1, characterized in that, The workbench (2) is provided with a material unloading mechanism (6) at the top center. The material unloading mechanism (6) includes a rotating plate (601) rotatably connected to one side of the top of the workbench (2). A lower pressure block (602) is fixedly connected at the top center of the rotating plate (601). The lower pressure block (602) is adapted to the upper pressure block (303). A barrier (603) is fixedly connected to the top edge of the rotating plate (601). L-shaped rods (604) are fixedly connected to both sides of the outer wall of the barrier (603).

4. The low-temperature splitting crack testing device for fiber-reinforced asphalt mixtures according to claim 3, characterized in that, The two L-shaped rods (604) are respectively adapted to the adjacent hooks (405).

5. The low-temperature splitting crack testing device for fiber-reinforced asphalt mixtures according to claim 1, characterized in that, The workbench (2) is provided with a collection mechanism (5) near the unloading mechanism (6), and the collection mechanism (5) includes a U-shaped frame (501) fixedly connected to one side of the workbench (2), and both ends of the U-shaped frame (501) are provided with slide grooves (502), and the middle of the U-shaped frame (501) is provided with an inclined surface. The two slide grooves (502) are slidably connected with the same U-shaped plate (503), and a collection frame (504) is provided in the middle of the bottom of the U-shaped plate (503), and handles (505) are provided on both sides of the U-shaped plate (503).

6. The low-temperature splitting crack testing device for fiber-reinforced asphalt mixtures according to claim 1, characterized in that, A displacement gauge (302) is fixedly connected to one side of the top of the lifting plate (3), and the bottom of the displacement gauge (302) passes through the lifting plate (3) and is adapted to the worktable (2).

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