Asphalt pavement coring machine

Abstract

The utility model relates to the field of road engineering detection equipment, and discloses an asphalt pavement coring machine which comprises a bottom frame, a supporting assembly is arranged on the top of the bottom frame, a handle is arranged on the rear side of the bottom frame, an engine is arranged on the rear side of the supporting assembly, and a drill rod is rotationally connected to the bottom of the front side of the supporting assembly. A fixing assembly is arranged on the front side of the supporting assembly, a protective cover is arranged in the middle of the fixing assembly, a mounting assembly and a buffering assembly are arranged in the fixing assembly, the mounting assembly comprises two L-shaped rods, and the two L-shaped rods are slidably connected to the left side and the right side of the middle of the fixing assembly respectively. According to the utility model, the L-shaped rod is matched with the slot formed in the protective cover, so that the protective cover can be mounted in the middle of the fixed plate, and the sliding block moves along the sliding rod to extrude the pressure spring, so that the impact force applied to the protective cover by the asphalt block can be uniformly dispersed, and the service life of the protective cover can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of road engineering testing equipment, and in particular to an asphalt pavement core sampling machine. Background Art

[0002] Asphalt pavement is a road surface constructed using asphalt as a binder. It has advantages such as good smoothness, comfortable driving, and low noise. Asphalt can effectively bind mineral aggregates to form a stable structure. This type of pavement is wear-resistant, can withstand repeated vehicle rolling, and has a certain degree of flexibility, making it adaptable to different climatic conditions. It is widely used in road construction, providing safe and smooth traffic conditions for vehicles.

[0003] Asphalt pavement coring machines are equipment used for road engineering testing. They mainly use rotary drilling to extract cylindrical core samples from asphalt pavement, which can accurately understand the thickness of each pavement layer, material composition, and other information. They are easy to operate, have high coring efficiency, and provide reliable basis for road quality assessment and maintenance decisions, ensuring the safety and durability of the pavement.

[0004] In existing technologies, asphalt pavement coring machines lack effective protection, which means that the dirt generated during drill rod operation cannot be effectively blocked, easily splashing everywhere, expanding the pollution range, affecting the working environment and the health of operators, and also reducing work efficiency and safety. Therefore, an asphalt pavement coring machine is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an asphalt pavement core sampling machine, which aims to improve the problem of the lack of effective protection in existing asphalt pavement core sampling machines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An asphalt pavement core sampling machine includes a base frame, a support assembly at the top of the base frame, a handle at the rear of the base frame, an engine at the rear of the support assembly, a drill rod rotatably connected to the bottom front of the support assembly, a fixing assembly at the front of the support assembly, a protective cover at the middle of the fixing assembly, and an installation assembly and a buffer assembly respectively inside the fixing assembly.

[0008] The mounting assembly includes two L-shaped rods, which are slidably connected to the left and right sides of the middle part of the fixing assembly. Springs are fixedly connected to opposite sides of the two L-shaped rods. Limit rods are slidably connected inside the two L-shaped rods. Slots are provided on both the left and right sides of the protective cover, and sliding grooves are provided on both the left and right sides of the middle part of the fixing assembly.

[0009] As a further description of the above technical solution:

[0010] The buffer assembly includes two connecting rings, which are slidably connected to the front and rear sides of the fixed assembly, respectively. A connecting plate is fixedly connected to the opposite side of each of the two connecting rings. Two connecting blocks are fixedly connected to the side of each connecting plate away from the connecting rings. Rotating rods are rotatably connected to the outer periphery of each of the two connecting blocks. Slider blocks are rotatably connected to the ends of each of the two rotating rods away from the two connecting blocks. Compression springs are fixedly connected to the opposite side of each of the two sliders. Sliding rods are slidably connected inside each of the two sliders.

[0011] As a further description of the above technical solution:

[0012] The support assembly includes two support rods, which are respectively fixedly connected to the top left and right sides of the base frame. A top plate is fixedly connected to the top of the two support rods. A threaded rod is rotatably connected inside the top plate. A movable plate is threadedly connected to the outer periphery of the threaded rod. A drive housing is fixedly connected to the front side of the movable plate.

[0013] As a further description of the above technical solution:

[0014] The fixing component includes two fixing rings, which are respectively fixedly connected to the outer periphery of the two support rods. Positioning plates are fixedly connected to the front side of each of the two fixing rings, and fixing plates are fixedly connected to the opposite side of the two positioning plates.

[0015] As a further description of the above technical solution:

[0016] The outer periphery of the L-shaped rod is slidably connected to the inside of the groove, and one end of the L-shaped rod is slidably connected to the inside of the slot;

[0017] As a further description of the above technical solution:

[0018] The protective cover is slidably connected to the middle of the fixed plate, and the two connecting rings are slidably connected to the front and rear sides of the protective cover, respectively.

[0019] As a further description of the above technical solution:

[0020] Each of the two L-shaped rods is fixedly connected to a partition on its opposite side, and the two partitions are slidably connected to the left and right sides of the fixed plate, respectively.

[0021] As a further description of the above technical solution:

[0022] The left and right sides of the movable plate are slidably connected to the outer periphery of the two support rods, respectively.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the L-shaped rod and the slot opened in the protective cover cooperate with each other, so that the protective cover can be installed in the middle of the fixed plate. In this way, the protective cover can prevent the dirt generated by the drill rod during operation from splashing and expanding the pollution range.

[0025] 2. In this utility model, by moving the slider along the slide rod to compress the compression spring, the impact force exerted by the asphalt block on the protective cover can be evenly distributed, thereby reducing the concentrated force on the protective cover and extending its service life. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an asphalt pavement coring machine proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the drill rod structure of an asphalt pavement coring machine proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a protective cover for an asphalt pavement coring machine proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of a protective cover for an asphalt pavement coring machine proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the connecting ring of an asphalt pavement coring machine proposed in this utility model;

[0031] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Base frame; 2. Support assembly; 201. Support rod; 202. Top plate; 203. Threaded rod; 204. Movable plate; 205. Drive housing; 3. Engine; 4. Handle; 5. Drill rod; 6. Fixing assembly; 601. Fixing ring; 602. Positioning plate; 603. Fixing plate; 7. Protective cover; 8. Mounting assembly; 801. L-shaped rod; 802. Partition plate; 803. Spring; 804. Limiting rod; 805. Slide groove; 806. Slot; 9. Buffer assembly; 901. Connecting ring; 902. Connecting plate; 903. Connecting block; 904. Rotating rod; 905. Slider; 906. Slide rod; 907. Compression spring. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Reference Figure 1 - Figure 4 This utility model provides an embodiment of an asphalt pavement coring machine, including a base frame 1, which provides support and facilitates the movement of the coring machine. The top of the base frame 1 is provided with a support component 2, and the rear side of the base frame 1 is provided with a handle 4 for easy movement of the coring machine. The rear side of the support component 2 is provided with an engine 3, which is a fuel-powered diesel engine used to control the rotation of the threaded rod 203 and the rotation of the drill rod 5, which is a mature existing technology. The drill rod 5 is rotatably connected to the bottom front side of the support component 2. The front side of the support component 2 is provided with a fixing component 6, and the middle part of the fixing component 6 is provided with a protective cover 7, which is used to reduce the range of asphalt contaminant splashing when the drill rod 5 is working. The interior of the fixing component 6 is provided with an installation component 8 and a buffer component 9.

[0036] Mounting assembly 8 includes two L-shaped rods 801, which are slidably connected to the left and right sides of the middle portion of fixing assembly 6, respectively. The L-shaped rods 801 provide a fixing function. Springs 803 are fixedly connected to opposite sides of each L-shaped rod 801. Limiting rods 804 are slidably connected inside each L-shaped rod 801, guiding the sliding of the L-shaped rods 801 and protecting the springs 803 from excessive deformation. The springs 803 are made of 65Mn spring steel. Slots 806 are provided on both the left and right sides of the protective cover 7, and grooves are provided on both the left and right sides of the middle portion of fixing assembly 6. 805, the outer periphery of the L-shaped rod 801 is slidably connected to the inside of the slide groove 805, and one end of the L-shaped rod 801 is slidably connected to the inside of the slot 806. The slot 806 is used to accommodate the insertion of one end of the L-shaped rod 801, so that the L-shaped rod 801 can provide a limiting effect on the protective cover 7, so that the protective cover 7 is installed in the middle of the fixed plate 603. The two L-shaped rods 801 are fixedly connected to the opposite sides of each other with partition plates 802. The two partition plates 802 are slidably connected to the left and right sides of the fixed plate 603 respectively. The partition plates 802 are used to prevent impurities from entering the fixed plate 603 and blocking the spring 803.

[0037] Reference Figure 5 - Figure 6The buffer assembly 9 includes two connecting rings 901, which are slidably connected to the front and rear sides of the fixing assembly 6, respectively. The two connecting rings 901 are also slidably connected to the front and rear sides of the protective cover 7. One side of the connecting ring 901 contacts the protective cover 7, so that when the protective cover 7 is impacted by an asphalt block, it will cause the connecting ring 901 to move together. A connecting plate 902 is fixedly connected to the opposite side of each of the two connecting rings 901. Two connecting blocks 903 are fixedly connected to the side of the connecting plate 902 away from the connecting ring 901. When the connecting ring 901 moves, it can drive the connecting plate 902 and the connecting blocks 903 to move. 03. Both connecting blocks 903 are rotatably connected to rotating rods 904 on their outer peripheries. The ends of the two rotating rods 904 away from the two connecting blocks 903 are rotatably connected to sliders 905. The rotating rods 904 are used to connect sliders 905 and connecting blocks 903. When the connecting blocks 903 move, the rotating rods 904 can rotate accordingly, thereby controlling the movement of sliders 905. The opposite sides of the two sliders 905 are fixedly connected to compression springs 907. The interiors of the two sliders 905 are slidably connected to sliding rods 906. The sliding rods 906 are used to guide the movement of sliders 905, and the compression springs 907 are used to provide a reset thrust.

[0038] Reference Figure 2 The support assembly 2 includes two support rods 201, which are fixedly connected to the top left and right sides of the base frame 1 respectively. A top plate 202 is fixedly connected to the top of the two support rods 201. The support rods 201 are used to connect the top plate 202 and the base frame 1 to provide support for the base frame 1. A threaded rod 203 is rotatably connected inside the top plate 202. A movable plate 204 is threadedly connected to the outer periphery of the threaded rod 203. The threaded rod 203 is used to guide the movable plate 204 to move. A drive housing 205 is fixedly connected to the front side of the movable plate 204. The drive housing 205 is used to protect the internal parts and enable the drill rod 5 to rotate accordingly. The left and right sides of the movable plate 204 are slidably connected to the outer periphery of the two support rods 201 respectively.

[0039] Reference Figure 2 The fixing component 6 includes two fixing rings 601, which are fixedly connected to the outer periphery of the two support rods 201 respectively. Positioning plates 602 are fixedly connected to the front side of each of the two fixing rings 601. A fixing plate 603 is fixedly connected to the opposite side of the two positioning plates 602. The protective cover 7 is slidably connected to the middle of the fixing plate 603. The fixing rings 601 and the positioning plates 602 are used to provide distance positioning. The fixing plate 603 is used to install the protective cover 7.

[0040] Working principle: When performing core sampling, first process the fixing ring 601, positioning plate 602, and fixing plate 603 and install them in the appropriate positions. Then move the L-shaped rod 801 so that it moves towards the limiting rod 804 and compresses the spring 803. Then, insert the top of the protective cover 7 into the fixing assembly 6 so that the protective cover 7 slides on the outer periphery of the drill rod 5. After the protective cover 7 enters the fixing plate 603, release the L-shaped rod 801 so that the spring 803 returns to its original position and pushes the L-shaped rod 801 to move. Thus, one end of the L-shaped rod 801 slides into the protective cover 7, thereby limiting the installation of the protective cover 7.

[0041] Subsequently, during the core extraction by rotating drill rod 5, the drilled asphalt blocks and sewage will splash upwards in an arc, and the contaminants will splash onto the inner wall of the protective cover 7, generating an impact force on the protective cover 7. After being subjected to the impact force, the protective cover 7 will vibrate and transmit the vibration to the connecting ring 901, causing the connecting ring 901 and the connecting plate 902 to move together. When the connecting plate 902 moves, the two connecting blocks 903 will move together, and the two rotating rods 904 will move accordingly, thereby moving along the slide rod 906 and compressing the compression spring 907. The compression spring 907 is compressed, thereby absorbing the impact force, reducing the movement amplitude caused by vibration, and extending the service life of the protective cover 7.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An asphalt pavement core sampling machine, comprising a base frame (1), characterized in that: The base frame (1) is provided with a support assembly (2) at the top, a handle (4) is provided at the rear side of the base frame (1), an engine (3) is provided at the rear side of the support assembly (2), a drill rod (5) is rotatably connected to the bottom front side of the support assembly (2), a fixing assembly (6) is provided at the front side of the support assembly (2), a protective cover (7) is provided in the middle of the fixing assembly (6), and an installation assembly (8) and a buffer assembly (9) are respectively provided inside the fixing assembly (6); The mounting assembly (8) includes two L-shaped rods (801), which are slidably connected to the left and right sides of the middle part of the fixing assembly (6). Springs (803) are fixedly connected to the opposite sides of the two L-shaped rods (801). Limiting rods (804) are slidably connected inside the two L-shaped rods (801). Slots (806) are provided on the left and right sides of the protective cover (7), and sliding grooves (805) are provided on the left and right sides of the middle part of the fixing assembly (6).

2. The asphalt pavement coring machine according to claim 1, characterized in that: The buffer assembly (9) includes two connecting rings (901), which are slidably connected to the front and rear sides of the fixing assembly (6). A connecting plate (902) is fixedly connected to the opposite side of each of the two connecting rings (901). Two connecting blocks (903) are fixedly connected to the side of the connecting plate (902) away from the connecting rings (901). Rotating rods (904) are rotatably connected to the outer periphery of each of the two connecting blocks (903). A slider (905) is rotatably connected to the end of each of the two rotating rods (904) away from the two connecting blocks (903). A compression spring (907) is fixedly connected to the opposite side of each of the two sliders (905). A sliding rod (906) is slidably connected inside each of the two sliders (905).

3. The asphalt pavement coring machine according to claim 2, characterized in that: The support assembly (2) includes two support rods (201), which are fixedly connected to the top left and right sides of the base frame (1) respectively. A top plate (202) is fixedly connected to the top of the two support rods (201). A threaded rod (203) is rotatably connected inside the top plate (202). A movable plate (204) is threadedly connected to the outer circumference of the threaded rod (203). A drive housing (205) is fixedly connected to the front side of the movable plate (204).

4. The asphalt pavement coring machine according to claim 3, characterized in that: The fixing component (6) includes two fixing rings (601), which are fixedly connected to the outer periphery of the two support rods (201) respectively. A positioning plate (602) is fixedly connected to the front side of each of the two fixing rings (601), and a fixing plate (603) is fixedly connected to the opposite side of the two positioning plates (602).

5. The asphalt pavement coring machine according to claim 1, characterized in that: The outer periphery of the L-shaped rod (801) is slidably connected to the inside of the groove (805), and one end of the L-shaped rod (801) is slidably connected to the inside of the slot (806).

6. The asphalt pavement coring machine according to claim 4, characterized in that: The protective cover (7) is slidably connected to the middle part of the fixed plate (603), and the two connecting rings (901) are slidably connected to the front and rear sides of the protective cover (7) respectively.

7. An asphalt pavement core sampling machine according to claim 4, characterized in that: Each of the two L-shaped rods (801) is fixedly connected to a partition plate (802) on opposite sides, and the two partition plates (802) are slidably connected to the left and right sides of the fixed plate (603).

8. An asphalt pavement core sampling machine according to claim 3, characterized in that: The movable plate (204) is slidably connected to the outer periphery of the two support rods (201) on its left and right sides respectively.

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