Asphalt pavement depth detection device

Abstract

The utility model discloses an asphalt pavement depth detection device, which relates to the field of pavement structure depth measurement and comprises a handle, the handle is of a cylindrical structure with an upper opening and a lower opening, a funnel is integrally formed at the upper opening end of the handle, and the outer wall of the lower end of the handle is fixedly connected with a fixing ring; the flattening plate is fixedly connected with the lower opening end of the handle, and an inner groove is formed in the upper surface of the flattening plate. The protective cover is arranged and used for covering the to-be-detected area, then the sand paving area is surrounded and blocked, the sand paving area is prevented from being blown by wind, and then detection is affected, in addition, the inner groove and the leakage groove are formed in the bulldozing plate, the leakage groove is communicated with the handle, spun yarn flows into the leakage groove through the handle and then falls on the ground through the leakage groove, the bulldozing plate is rotated, and the detection efficiency is improved. The fine yarns are uniformly paved on the asphalt pavement, so that the problem of non-uniform sand paving in the prior art is solved, a relatively standard circular sand surface can be obtained, a relatively accurate numerical value can be conveniently measured, and errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface structure depth measurement, in particular to an asphalt road surface depth detection device. Background Art

[0002] Asphalt pavement depth testing refers to structural depth testing. The structural depth of an asphalt pavement surface is an important indicator of pavement roughness. It refers to the average depth of open pores within a certain area of the road's uneven surface. It is primarily used to assess the pavement's macro-roughness, drainage performance, and skid resistance. Fine sand is spread on the pavement surface, and the ratio of the volume of sand embedded in the uneven surface to the covered area is calculated to determine the structural depth. The existing manual sand spreading method involves first measuring a certain amount of sand with a sand measuring drum, pouring it onto the road surface to be tested, and then using a push plate with a rubber pad on the bottom to repeatedly rotate and spread the sand from the inside out, filling the gaps in the uneven road surface. The sand is then pushed into a circular shape, leaving no residual sand on the surface. After the sand spreading is completed, the outer diameter of the circle is measured, and the pavement structural depth is finally calculated.

[0003] However, since the existing manual sand-laying method is to push the sand into a circle as much as possible, the outer diameter of the circle determines the depth of the road surface structure. The existing manual sand-laying method is uneven and the pushed circle is very irregular, which affects the measurement accuracy. Therefore, the existing manual sand-laying method has obvious measurement errors, which in turn affects the measurement accuracy. Utility Model Content

[0004] The purpose of the present utility model is to provide an asphalt pavement depth detection device in order to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an asphalt pavement depth detection device, comprising a handle, the handle being a cylindrical structure with upper and lower openings, a funnel being integrally formed at the upper open end of the handle, and a fixing ring being fixedly connected to the outer wall of the lower end of the handle;

[0006] A push plate fixedly connected to the lower open end of the handle, wherein the upper surface of the push plate is provided with an inner groove, the bottom of the inner groove is provided with a leakage groove penetrating the bottom of the push plate, and the leakage groove is connected to the handle;

[0007] A sleeve slidably sleeved on the outer wall of the handle, the sleeve being a cylindrical structure with upper and lower openings, the upper open end of the sleeve slidably sleeved on the outer wall of the handle, and the lower open end of the sleeve fixedly connected to a limit ring;

[0008] A protective cover that rotates relative to the handle, wherein a through hole is formed at the center of the top of the protective cover, and the through hole is rotatably connected to the sleeve via a bearing;

[0009] A spring is sleeved on the outer wall of the handle and located on the inner side of the sleeve, and the spring is located between the top of the inner wall of the sleeve and the fixing ring.

[0010] As a further solution of the present invention: the inner groove is a conical groove inclined from the outside to the inside.

[0011] As a further solution of the present invention: the protective cover is a transparent hard plastic part.

[0012] As a further solution of the present invention: a scraper is integrally formed on the inner top end of the protective cover, the lower end of the scraper is an inclined structure, and the lower end of the scraper is in contact with the inner wall of the inner groove.

[0013] As a further solution of the present invention: the outer diameter of the fixing ring is smaller than the inner diameter of the sleeve, and the outer diameter of the fixing ring is larger than the inner diameter of the limiting ring.

[0014] As a further solution of the present invention: the push-flattening assembly includes a push-flat plate. When the spring is in a natural state, the bottom of the push-flat plate is relatively lower than the bottom of the lower end of the protective cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By setting up a protective cover, the area to be inspected is covered with the protective cover, and then the sand-paved area is enclosed to prevent wind from blowing over the sand-paved area and affecting the inspection. In addition, by opening an inner groove and a leakage groove on the pushing plate, the leakage groove is connected to the handle, and the yarn flows into the leakage groove from the handle and then falls to the ground from the leakage groove. The pushing plate is rotated to make the yarn evenly laid on the asphalt pavement, which solves the problem of uneven sand paving in the existing road surface. It is possible to obtain a more standardized circular sand surface, which is convenient for measuring more accurate values and reducing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic structural diagram of another perspective of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the enlarged structure of area A of the present invention.

[0021] In the figure: 1. handle; 11. funnel; 12. fixing ring; 2. push plate; 21. inner groove; 22. drain groove; 3. protective cover; 31. through hole; 32. scraper; 4. sleeve; 5. limit ring; 6. spring; 7. bearing. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figures 1 to 4 In an embodiment of the present invention, an asphalt pavement depth detection device includes a handle 1, which is a cylindrical structure with upper and lower openings. A funnel 11 is integrally formed at the upper open end of the handle 1, and a fixing ring 12 is fixedly connected to the outer wall of the lower end of the handle 1;

[0024] A push plate 2 is fixedly connected to the lower open end of the handle 1. An inner groove 21 is formed on the upper surface of the push plate 2. A leakage groove 22 is formed at the bottom of the inner groove 21 and passes through the bottom of the push plate 2. The leakage groove 22 is connected to the handle 1.

[0025] A sleeve 4 is slidably sleeved on the outer wall of the handle 1. The sleeve 4 is a cylindrical structure with upper and lower openings. The upper open end of the sleeve 4 is slidably sleeved on the outer wall of the handle 1, and the lower open end of the sleeve 4 is fixedly connected to the limit ring 5;

[0026] A protective cover 3 rotates relative to the handle 1. A through hole 31 is formed at the center of the top of the protective cover 3. The through hole 31 is rotatably connected to the sleeve 4 via a bearing 7.

[0027] A spring 6 is sleeved on the outer wall of the handle 1 and located inside the sleeve 4. The spring 6 is located between the top of the inner wall of the sleeve 4 and the fixing ring 12;

[0028] The outer diameter of the fixing ring 12 is smaller than the inner diameter of the sleeve 4, and the outer diameter of the fixing ring 12 is larger than the inner diameter of the limiting ring 5;

[0029] When the spring 6 is in a natural state, the bottom of the push plate 2 is relatively lower than the bottom of the lower end of the protective cover 3 .

[0030] In this embodiment: Since the existing manual sand-laying method is to push the sand into a circle as much as possible, the outer diameter of the circle determines the depth of the road surface structure. The existing manual sand-laying method does not lay the sand evenly, and the pushed circle is very irregular, which affects the measurement accuracy. Therefore, this solution sets a protective cover 3, uses the protective cover 3 to cover the area to be detected, and then encloses the sand-laying area to prevent the wind from blowing the sand-laying area and affecting the detection. In addition, by opening an inner groove 21 and a leakage groove 22 on the pushing plate 2, the leakage groove 22 is connected to the handle 1, and the yarn flows from the handle 1 into the leakage groove 22, and then falls to the ground from the leakage groove 22. The pushing plate 2 is rotated to make the yarn evenly laid on the asphalt road surface, solving the problem of uneven sand-laying in the existing method, and it is possible to obtain a more standardized circular sand surface, which is convenient for measuring more accurate values and reducing errors.

[0031] Specifically, before measuring the pavement structure depth using the manual sand spreading method, the selected pavement is first cleaned, and then the detection device is placed in the cleaned area to be tested. A certain amount of fine sand is measured using a graduated cylinder and poured into the funnel 11. The fine sand flows from the handle 1 into the trough 22 on the push plate 2. Then, by turning the handle 1, the fine sand in the trough 22 is evenly spread on the asphalt pavement. The fine sand is spread from the center outward. When the pavement in the center area of the push plate 2 is fully paved, the fine sand in the trough 22 will spread outward along the length of the trough 22, thereby completing the circular paving surface.

[0032] It should be noted that, in this solution, the bottom height of the push plate 2 is relatively lower than the bottom height of the lower end of the protective cover 3 before sand laying. When the protective cover 3 contacts the ground, the push plate 2 is acted upon by the weight of the protective cover 3 itself, which can force the spring 6 to compress. Then, the reaction force given by the spring 6 can make the bottom of the push plate 2 close to the asphalt pavement. There is no need to manually apply downward pressure to the push plate 2. The reaction force given by the spring 6 to the push plate 2 is basically a constant value. Compared with the existing manual sand laying, this structure avoids excessive or insufficient manual pressure, which affects the sand laying effect.

[0033] Please refer to Figures 1 to 4 The inner groove 21 is a conical groove inclined from the outside to the inside.

[0034] In this embodiment: when the pushing plate 2 rotates, excessive fine sand accumulated in the leakage groove 22 will overflow upward, and the inner groove 21 of this solution is a conical groove, so the fine sand overflowing upward is constrained within a certain range by the action of the inclined surface and will not flow to the outer edge of the inner groove 21, avoiding the occurrence of irregular sand laying. Only after the circular inner area is fully paved, the excess fine sand extends outward along the length direction of the leakage groove 22 and covers the periphery.

[0035] Please refer to the figure Figures 1 to 4 , the protective cover 3 is a transparent hard plastic part.

[0036] In this embodiment, the protective cover 3 is made of a transparent hard plastic material, which makes it easy for workers to observe the progress of sand laying, and also has a good windproof effect, greatly improving the detection efficiency.

[0037] Please refer to the figure Figures 1 to 4 A scraper 32 is integrally formed on the inner top of the protective cover 3 , and the lower end of the scraper 32 is an inclined structure, and the lower end of the scraper 32 is in contact with the inner wall of the inner groove 21 .

[0038] In this embodiment, when excessive fine sand accumulates in the trough 22 and overflows into the inner trough 21, the scraper 32 remains stationary relative to the pushing plate 2, and the scraper 32 is attached to the inner wall of the bottom end of the inner trough 21, thereby pushing the fine sand entering the inner trough 21 back into the trough 22, ensuring that the fine sand is completely used for paving operations and avoiding affecting the detection accuracy.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An asphalt pavement depth detection device, characterized in that: include: A handle (1), the handle (1) being a cylindrical structure with upper and lower openings, a funnel (11) being integrally formed at the upper open end of the handle (1), and a fixing ring (12) being fixedly connected to the outer wall of the lower end of the handle (1); A push plate (2) fixedly connected to the lower open end of the handle (1), the upper surface of the push plate (2) is provided with an inner groove (21), the bottom of the inner groove (21) is provided with a leakage groove (22) penetrating the bottom of the push plate (2), and the leakage groove (22) is connected to the handle (1); A sleeve (4) is slidably sleeved on the outer wall of the handle (1), the sleeve (4) being a cylindrical structure with upper and lower openings, the upper open end of the sleeve (4) being slidably sleeved on the outer wall of the handle (1), and the lower open end of the sleeve (4) being fixedly connected to a limiting ring (5); a protective cover (3) that rotates relative to the handle (1), a through hole (31) being provided at the center of the top of the protective cover (3), and the through hole (31) and the sleeve (4) being rotatably connected via a bearing (7); A spring (6) is sleeved on the outer wall of the handle (1) and located inside the sleeve (4); the spring (6) is located between the top of the inner wall of the sleeve (4) and the fixing ring (12).

2. The asphalt pavement depth detection device according to claim 1, characterized in that: The inner groove (21) is a conical groove inclined from the outside to the inside.

3. The asphalt pavement depth detection device according to claim 2, characterized in that: The protective cover (3) is a transparent hard plastic part.

4. The asphalt pavement depth detection device according to claim 3, characterized in that: A scraper (32) is integrally formed on the inner top end of the protective cover (3), the lower end of the scraper (32) is an inclined structure, and the lower end of the scraper (32) is in contact with the inner wall of the inner groove (21).

5. The asphalt pavement depth detection device according to claim 4, characterized in that: The outer diameter of the fixing ring (12) is smaller than the inner diameter of the sleeve (4), and the outer diameter of the fixing ring (12) is larger than the inner diameter of the limiting ring (5).

6. The asphalt pavement depth detection device according to claim 5, characterized in that: When the spring (6) is in a natural state, the height of the bottom of the push plate (2) is relatively lower than the height of the bottom of the lower end of the protective cover (3).

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