An asphalt mixture testing device

Abstract

This utility model belongs to the field of asphalt pavement testing, and specifically relates to an asphalt mixture testing device. The device includes a vertically mounted insertion rod with a movable tube that can move up and down. A lower sleeve is independently mounted on the insertion rod, detachably connected to the lower end of the movable tube. A base plate is horizontally fixed to the bottom of the lower sleeve. The insertion rod is equipped with a measuring component for measuring the upward movement distance of the movable tube, and a driving component for driving the movable tube to move downward and reset after upward movement. A scraper ring for cleaning asphalt adhering to the rod wall is independently mounted on the insertion rod and fixed to the inner wall of the lower sleeve. The lower sleeve has several drainage ports that communicate internally and externally to discharge asphalt scraped off by the scraper ring. This eliminates the need for manual cleaning of asphalt adhering to the insertion rod, allowing workers to proceed directly to the next testing point for continuous testing and improved testing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of asphalt pavement testing, and in particular relates to an asphalt mixture testing device. Background Technology

[0002] The thickness of asphalt paving is a key factor in ensuring road surface quality, durability, and driving safety. Its design requires comprehensive consideration of factors such as road grade, traffic load, climate conditions, base structure, and material properties. It employs a layered construction method: a 4-8cm thick load-bearing base layer, a 6-10cm thick middle layer to resist rutting shear, and a 4-6cm thick surface layer to directly face loads and the environment. The total thickness is 10-15cm for urban light traffic, 15-25cm for heavy traffic, and 18-25cm or more for highways. Special road sections and scenarios require separate calculations based on load. In conventional asphalt paving thickness testing, a thin rod is typically inserted into the asphalt and marked before measurement. However, this method has drawbacks such as slow testing speed, increased risk of burns to operators, and significant measurement errors.

[0003] The existing Chinese utility model patent with announcement number CN217127941U discloses an adjustable asphalt paving thickness detection device, which can achieve relatively accurate thickness detection. However, during the detection process, asphalt is easily stuck to the external thread of the adjuster. If it is not cleaned in time after the detection, it will cause the clamping nut to jam with the external thread, affecting the adjustment function. Moreover, cleaning is time-consuming and cannot meet the needs of continuous detection, thus affecting the detection efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an asphalt mixture testing device that makes asphalt cleaning more convenient and faster, and enables continuous testing.

[0005] The asphalt mixture testing equipment includes a vertically arranged insertion rod, on which a movable tube that can move up and down is fitted. A lower sleeve is independently fitted on the insertion rod, and the lower sleeve is detachably connected to the lower end of the movable tube. A base plate is horizontally fixed at the bottom of the lower sleeve. A measuring component for measuring the upward movement distance of the movable tube is provided on the insertion rod. A driving component for driving the movable tube to move downward and reset after moving upward is provided on the insertion rod. A scraper ring for cleaning asphalt adhering to the insertion rod wall is independently fitted on the insertion rod. The scraper ring is fixed on the inner wall of the lower sleeve. Several discharge ports with internal and external communication are opened on the wall of the lower sleeve for discharging the asphalt scraped off by the scraper ring.

[0006] Furthermore, the measuring component includes an observation window, which is opened on the moving tube. The rod body is provided with a size scale, which increases sequentially from bottom to top. When the bottom of the observation window is aligned with the "zero" mark of the scale, the bottom of the base plate is flush with the bottom of the rod.

[0007] Furthermore, the drive assembly includes a spring, a retaining ring mounted on the insert rod above the moving tube, a spring mounted on the insert rod, the spring being located between the retaining ring and the moving tube, a groove being formed on the inner wall of the moving tube, and a slider fixed on the insert rod that can move up and down along the inside of the groove.

[0008] Furthermore, several first handles are horizontally fixed to the upper end of the movable tube, and several second handles are horizontally fixed to the upper end of the insertion rod.

[0009] Furthermore, both the first and second handles are fitted with anti-slip sleeves.

[0010] Furthermore, the scraper ring has a conical structure, and the top of the discharge port is inclined upwards.

[0011] Furthermore, the lower sleeve and the lower end of the moving tube are connected by threads, and a positioning ring is fitted on the moving tube, which fits against the top of the lower sleeve.

[0012] Furthermore, the bottom of the insertion rod has a conical structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When it is necessary to test the thickness of asphalt mixture paving, first, the insertion rod is perpendicular to the road surface and the lower end is inserted into the asphalt mixture. The surface of the asphalt mixture pushes the base plate upward. During the upward movement of the base plate, the moving tube is pushed upward through the lower sleeve. When the bottom of the insertion rod touches the bottom, the thickness value of the asphalt mixture paving can be directly obtained through the measuring component, making it more convenient and faster for workers to use. When the insertion rod is pulled out of the asphalt mixture, the drive component will drive the moving tube downward, and the moving tube will drive the lower sleeve downward to reset. The lower sleeve will drive the scraper ring downward. During the downward movement of the scraper ring, it can scrape off the asphalt attached to the moving tube. The scraped asphalt will be discharged from the discharge port until the bottom of the base plate is flush with the bottom of the insertion rod. There is no need for workers to manually clean the asphalt attached to the insertion rod, allowing workers to go directly to the next testing point for testing, so as to achieve continuous testing and improve testing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Sectional view at point AA;

[0017] Figure 3 for Figure 2 Enlarged view of region a in the middle;

[0018] Figure 4 This is a perspective view of the present utility model;

[0019] Figure 5 This is an exploded view of the present invention;

[0020] The components in the diagram are named as follows: 1. Moving tube; 2. Dimension scale; 3. First handle; 4. Spring; 5. Second handle; 6. Insert rod; 7. Retaining ring; 8. Observation window; 9. Positioning ring; 10. Lower sleeve; 11. Drain port; 12. Base plate; 13. Scraper ring; 14. Slider. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0022] Example

[0023] This embodiment describes an asphalt mixture testing device, such as... Figure 1 , Figure 2 and Figure 3 As shown, it includes a vertically arranged insertion rod 6. The bottom of the insertion rod 6 has a conical structure. The conical structure of the bottom of the insertion rod 6 makes it easier to insert the insertion rod 6 into the asphalt mixture, making it simpler and easier for workers to use. Of course, the bottom of the insertion rod 6 can also be a triangular pyramidal structure.

[0024] The insertion rod 6 is fitted with a movable tube 1 that can move up and down, such as... Figure 2 As shown, there is a gap between the moving tube 1 and the insertion rod 6, which allows the moving tube 1 to move up and down along the moving tube 1;

[0025] Several first handles 3 are horizontally fixed to the upper end of the movable tube 1, and several second handles 5 are horizontally fixed to the upper end of the insertion rod 6; in this embodiment, as shown... Figure 1 , Figure 2 and Figure 4 As shown, the upper end of the moving tube 1 is horizontally fixed with two first handles 3 arranged in a left-right mirror symmetrical distribution, and the upper end of the insertion rod 6 is horizontally fixed with two second handles 5 arranged in a left-right mirror symmetrical distribution. The first handles 3 and the second handles 5 facilitate the operation of this asphalt mixture testing equipment by the workers. Both the first handles 3 and the second handles 5 are fitted with anti-slip sleeves made of foam, rubber, silicone and other materials, which can effectively increase the friction between the workers' hands and the first handles 3 and the second handles 5 and prevent slippage during operation.

[0026] The insert 6 is independently fitted with a lower sleeve 10, such as Figure 2 As shown, there is a gap between the lower sleeve 10 and the insertion rod 6, which allows the lower sleeve 10 to move up and down along the insertion rod 6;

[0027] The lower sleeve 10 is detachably connected to the lower end of the moving tube 1, such as... Figure 3 and Figure 5 As shown, the lower sleeve 10 and the lower end of the moving tube 1 are connected by threads. The lower end of the moving tube 1 has an external thread, and the upper end of the inner wall of the lower sleeve 10 has an internal thread, so that the lower sleeve 10 can be detachably connected to the lower end of the moving tube 1, so as to facilitate the disassembly and replacement or cleaning of the lower sleeve 10. A positioning ring 9 is fitted on the moving tube 1. The positioning ring 9 fits against the top of the lower sleeve 10. After the lower sleeve 10 is connected to the lower end of the moving tube 1, the top of the lower sleeve 10 will fit against the positioning ring 9. The positioning ring 9 blocks and positions the lower sleeve 10 to ensure the installation accuracy of the lower sleeve 10.

[0028] The bottom of the lower sleeve 10 is horizontally fixed with a base plate 12, such as... Figure 1 , Figure 2 and Figure 4 As shown, the base plate 12 can increase the contact area between the lower sleeve 10 and the surface of the asphalt mixture, disperse the force, and prevent the lower sleeve 10 from sinking into the asphalt mixture;

[0029] To elaborate further, such as Figure 1 , Figure 2 and Figure 4 As shown, this embodiment preferably includes an observation window 8, which is located on the moving tube 1. The rod 6 has a scale 2, with the scale increments from bottom to top. When the bottom of the observation window 8 is aligned with the "zero" mark on the scale, the bottom of the base plate 12 is flush with the bottom of the rod 6. The rod 6 is inserted perpendicularly into the asphalt mixture, and the surface of the asphalt mixture pushes the base plate 12 upwards. During this upward movement, the base plate 12 pushes the moving tube 1 upwards through the lower sleeve 10. When the bottom of the rod 6 touches the bottom, the scale aligned with the bottom of the observation window 8 represents the thickness of the asphalt mixture paving. It is not necessary to measure the insertion depth of the rod 6. The marking measurement can directly obtain the thickness of the asphalt mixture paving, making it more convenient and faster for workers to use. After pulling out the insertion rod 6 from the asphalt mixture, you can go directly to the next test point and insert the moving tube 1 again to perform the test. The whole solution constitutes a measuring component for measuring the upward movement distance of the moving tube 1. Of course, the measuring component can also directly use the size scale 2. The size scale 2 is opened on the insertion rod 6 in ascending order from bottom to top. When the top of the moving tube 1 is aligned with the "zero" mark of the scale, the bottom of the base plate 12 is flush with the bottom of the insertion rod 6. When the bottom of the insertion rod 6 touches the bottom, the mark aligned with the top of the moving tube 1 is the thickness value of the asphalt mixture paving.

[0030] To elaborate further, such as Figure 2 and Figure 5As shown, in this embodiment, a spring 4 is preferably included. A retaining ring 7 is fitted on the insertion rod 6 above the moving tube 1. The spring 4 is fitted on the insertion rod 6 and is located between the retaining ring 7 and the moving tube 1. When the moving tube 1 moves upward, it compresses the spring 4. When the moving tube 1 needs to move downward, the spring 4 pushes the moving tube 1 downward through its own elasticity. The moving tube 1 then drives the lower sleeve 10 to move downward and reset until the bottom of the base plate 12 is flush with the bottom of the insertion rod 6. No manual reset is required, allowing the staff to go directly to the next detection point and insert directly for detection, thereby achieving continuous detection and improving detection efficiency. A sliding groove is opened on the inner wall of the moving tube 1, and a slider 14 that can move up and down along the inside of the sliding groove is fixed on the rod body of the insertion rod 6. Figure 2 As shown, when the moving tube 1 moves up and down, the slider 14 moves up and down along the inside of the groove, thereby guiding the moving tube 1 and preventing it from tilting or rotating. When the bottom of the base plate 12 is flush with the bottom of the insertion rod 6, the slider 14 will fit against the top of the groove to block and position the downward-moving moving tube 1, ensuring that the bottom of the base plate 12 is flush with the bottom of the insertion rod 6. This scheme constitutes a drive assembly for driving the upward-moving moving tube 1 to move downward and reset. Of course, the drive assembly can also use a tension spring, with a first connecting plate horizontally fixed on the insertion rod 6. The moving tube 1 has a through groove that is open to both the inside and outside and is used for the connecting plate to pass through. A second connecting plate is fixed horizontally on the upper part of the moving tube 1 and is parallel and aligned with the first connecting plate. The second connecting plate is located above the first connecting plate. A tension spring is fixed between the first connecting plate and the second connecting plate. When the moving tube 1 moves upward, the tension spring will stretch. When the moving tube 1 needs to move downward, the tension spring will pull the moving tube 1 downward to reset through its own restoring ability until the bottom plate 12 is flush with the bottom of the insertion rod 6. At the same time, the first connecting block is in contact with the top of the through groove to block and position the moving tube 1 as it moves downward.

[0031] The insertion rod 6 is independently fitted with a scraper ring 13 for cleaning the asphalt adhering to the wall of the insertion rod 6. The scraper ring 13 is fixed to the inner wall of the lower sleeve 10, such as... Figure 3 and Figure 5 As shown, when the lower end of the insertion rod 6 is pulled out of the asphalt mixture, some asphalt or other substances will adhere to it. If it is not cleaned, it will affect the flexibility of the moving tube 1 in moving up and down during the next test, and increase the resistance when the lower end of the insertion rod 6 is reinserted into the asphalt mixture. In this embodiment, when the moving tube 1 moves down to reset, the lower sleeve 10 will drive the scraper ring 13 to move down. The blade of the scraper ring 13 is in contact with the surface of the insertion rod 6. Therefore, the scraper ring 13 can scrape off the asphalt or other substances attached to the moving tube 1 during the downward movement, so as to avoid affecting the normal use of this asphalt mixture testing equipment.

[0032] The lower sleeve 10 has several discharge ports 11 that are interconnected internally and externally, used to discharge the asphalt scraped off by the scraper ring 13, such as... Figure 1and Figure 5 As shown, in this embodiment, four discharge ports 11 are evenly distributed along the circumference of the lower sleeve 10; after the scraper ring 13 scrapes the asphalt from the insertion rod 6, because the heated asphalt is more viscous, some of it will adhere to the surface of the scraper ring 13. In this embodiment, as... Figure 2 and Figure 3 As shown, the scraper ring 13 has a conical structure, and the top of the discharge port 11 is inclined upward, so that the scraper ring 13 and the top of the discharge port 11 form an upward inclined slope. The slope can guide the asphalt attached to the scraper ring 13 to move towards the discharge port 11 until enough asphalt is accumulated. The asphalt will fall off from the discharge port 11 by its own weight, thus effectively preventing asphalt from clogging the lower sleeve 10.

[0033] In practical use, when it is necessary to detect the thickness of asphalt mixture paving, firstly, insert the insertion rod 6 perpendicular to the road surface and insert its lower end into the asphalt mixture. The surface of the asphalt mixture pushes the base plate 12 upward. During the upward movement of the base plate 12, the moving tube 1 is pushed upward through the lower sleeve 10. When the bottom of the insertion rod 6 touches the bottom, the scale aligned with the bottom of the observation window 8 is the thickness value of the asphalt mixture paving. There is no need to mark and measure the insertion depth of the insertion rod 6; the thickness of the asphalt mixture paving can be obtained directly, making it more convenient and faster for workers to use. Then, the insertion rod 6 is pulled out of the asphalt mixture... At this point, the spring 4 will push the moving tube 1 downward through its own elasticity. The moving tube 1 will then drive the lower sleeve 10 to move downward and reset. The lower sleeve 10 will drive the scraper ring 13 downward. During the downward movement of the scraper ring 13, it can scrape off the asphalt or other substances attached to the moving tube 1. The scraped asphalt or other substances will be discharged from the drain port 11 until the bottom of the base plate 12 is flush with the bottom of the insertion rod 6. There is no need for the staff to manually clean the asphalt or other substances attached to the insertion rod 6. This allows the staff to go directly to the next testing point for testing, so as to achieve continuous testing and improve testing efficiency.

Claims

1. An asphalt mixture testing apparatus comprising a vertically arranged insertion rod (6), characterised in that: The insert rod (6) is fitted with a movable tube (1) that can move up and down. The insert rod (6) is independently fitted with a lower sleeve (10). The lower sleeve (10) is detachably connected to the lower end of the movable tube (1). The bottom of the lower sleeve (10) is horizontally fixed with a base plate (12). The insert rod (6) is equipped with a measuring component for measuring the upward movement distance of the movable tube (1). The insert rod (6) is equipped with a driving component for driving the movable tube (1) to move downward and reset after moving upward. The insert rod (6) is independently fitted with a scraper ring (13) for cleaning the asphalt attached to the wall of the insert rod (6). The scraper ring (13) is fixed on the inner wall of the lower sleeve (10). The lower sleeve (10) has several discharge ports (11) that are connected inside and outside and are used to discharge the asphalt scraped off by the scraper ring (13).

2. The asphalt mixture testing apparatus of claim 1, wherein: The measuring component includes an observation window (8), which is located on the moving tube (1). The rod (6) has a size scale (2) which increases sequentially from bottom to top. When the bottom of the observation window (8) is aligned with the "zero" mark of the scale, the bottom of the base plate (12) is flush with the bottom of the rod (6).

3. The asphalt mixture testing apparatus of claim 1, wherein: The drive assembly includes a spring (4), a retaining ring (7) is fitted on the insert rod (6) above the moving tube (1), the spring (4) is fitted on the insert rod (6), the spring (4) is located between the retaining ring (7) and the moving tube (1), a sliding groove is provided on the inner wall of the moving tube (1), and a slider (14) that can move up and down along the inside of the sliding groove is fixed on the rod of the insert rod (6).

4. The asphalt mixture testing apparatus of claim 1, wherein: The upper end of the moving tube (1) is horizontally fixed with several first handles (3), and the upper end of the insertion rod (6) is horizontally fixed with several second handles (5).

5. The asphalt mixture testing apparatus of claim 4, wherein: Both the first handle (3) and the second handle (5) are fitted with anti-slip sleeves.

6. The asphalt mixture testing apparatus of claim 1, wherein: The scraper ring (13) has a conical structure, and the top of the discharge port (11) is inclined upward.

7. The asphalt mixture testing apparatus of claim 1, wherein: The lower sleeve (10) is connected to the lower end of the moving tube (1) by a thread. A positioning ring (9) is fitted on the moving tube (1), and the positioning ring (9) fits against the top of the lower sleeve (10).

8. The asphalt mixture testing apparatus of claim 1, wherein: The bottom of the insertion rod (6) has a conical structure.

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