Highway pavement asphalt layer thickness detection device

Abstract

The utility model relates to the technical field of thickness detection, and discloses a highway pavement asphalt layer thickness detection device, which comprises a sampling machine main body, a transmission rod arranged at the output end of the sampling machine main body and a drilling cylinder arranged at the lower end of the transmission rod, a U-shaped frame is slidably connected to the inner walls of the two lifting openings, a moving assembly is connected to the interior of the U-shaped frame, two clamping assemblies are connected to the exterior of the moving assembly, a supporting assembly is connected to the bottom face of the end, located in the drilling barrel, of the U-shaped frame, and the supporting assembly is matched and aligned with the two clamping assemblies. According to the highway pavement asphalt layer thickness detection device, the U-shaped frame is arranged in the drilling barrel of the sampling machine main body, and the supporting assembly and the two clamping assemblies are arranged in the U-shaped frame, so that the upper end of an asphalt column can be clamped through the two clamping assemblies after the drilling barrel is used for sampling in an asphalt pavement; and the asphalt column can be taken out of the drill hole more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of thickness detection, in particular to a device for detecting the thickness of an asphalt layer on a highway pavement. Background Art

[0002] After the highway construction is completed, in order to ensure that the construction quality meets the design specifications and standards and to ensure that the road surface has sufficient bearing capacity to cope with the traffic load, it is often necessary to take samples through core sampling equipment to test the thickness of the asphalt layer of the highway pavement.

[0003] The patent with the current announcement number CN210665113U discloses a road surface core sampling machine, which includes a machine body, a drill bit is arranged on the machine body, and a protective sleeve for the drill bit to pass through is arranged on the machine body directly below the drill bit. The protective sleeve is a telescopic structure, and the protective sleeve includes a first sleeve and a second sleeve arranged from bottom to top. The first sleeve is inserted and slidably connected in the second sleeve, and the second sleeve is fixed on the machine body. The first sleeve is fixed to the second sleeve through a fixing member. When the fixing member is released, the first sleeve and the second sleeve slide relatively, and the first sleeve abuts against the road surface. The protective sleeve abuts against the road surface to reduce the infiltration of sewage into the road surface during the coring process, and also reduces the splashing of slurry. The core sampling machine has the effect of reducing the discharge of sewage during the coring process.

[0004] However, the above-mentioned core drilling sampler still has the following problems in actual use:

[0005] After the core sampling machine currently used penetrates the asphalt layer, the cut asphalt column (i.e. the sample part) is often retained in the borehole due to lubrication by cooling water and other reasons. At this time, the tester needs to use additional tools to remove the asphalt column from the borehole. This process is relatively cumbersome and reduces the sampling efficiency. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a device for detecting the thickness of an asphalt layer on a highway pavement, which can remove the drilled asphalt column from the drill hole together with the drill tube.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting the thickness of an asphalt layer on a highway pavement, comprising a sampling machine body, a transmission rod installed at the output end of the sampling machine body, and a drill barrel installed at the lower end of the transmission rod, the side wall of the drill barrel is penetrated by two symmetrically arranged lifting openings, the inner walls of the two lifting openings are slidably connected with a U-shaped frame, the interior of the U-shaped frame is connected with a moving component, the exterior of the moving component is connected with two clamping components, the bottom surface of the U-shaped frame at one end inside the drill barrel is connected with a supporting component, and the supporting component is matched and aligned with the two clamping components.

[0008] Furthermore, the moving assembly includes a handle and a bidirectional screw rod. The handle is located at one end of the U-shaped frame. The end of the handle close to the U-shaped frame is fixedly connected to one end of the bidirectional screw rod. The other end of the bidirectional screw rod passes through the U-shaped frame and is connected to the two clamping assemblies.

[0009] Furthermore, the bottom surfaces of both ends of the U-shaped frame are provided with sliding grooves, and the upper ends of the two clamping components are respectively located in the two sliding grooves.

[0010] Furthermore, the clamping assembly includes an L-shaped block and a movable semi-ring tooth, one end of the L-shaped block is sleeved and threadedly connected to the outer wall of the bidirectional screw, and the other end of the L-shaped block is fixedly connected to the outer wall of the movable semi-ring tooth, and the movable semi-ring tooth matches the support assembly.

[0011] Furthermore, the supporting assembly includes a slide plate and two fixed semi-ring teeth, the outer wall of the slide plate is fixedly connected to the bottom surface of the middle part of the U-shaped frame, the bottom surface of the slide plate is fixedly connected to the upper surface of the two fixed semi-ring teeth, and the two fixed semi-ring teeth are matched and aligned with the two movable semi-ring teeth.

[0012] Furthermore, ball cavities are provided on the bottom surfaces of both ends of the U-shaped frame, and inner walls of the two ball cavities are rollingly connected with rolling balls, and the lowest points of the two rolling balls are flush with the lowest point of the drill tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] This highway pavement asphalt layer thickness detection device is configured by arranging a U-shaped frame inside the drill tube of the sampling machine body, and arranging a support component and two clamping components inside the U-shaped frame. After using the drill tube to take samples inside the asphalt pavement, the upper end of the asphalt column can be clamped by the two clamping components, so that the asphalt column can be more conveniently taken out from the inside of the drill hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall appearance of the utility model;

[0016] Figure 2 It is a detailed connection diagram of the transmission rod, drill tube and U-shaped frame of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic cross-sectional view of each component;

[0018] Figure 4 The figure is a schematic diagram of the internal structure of the U-shaped frame of the utility model.

[0019] In the figure: 1. Sampler body; 2. Transmission rod; 3. Drill barrel; 4. U-shaped frame; 5. Turning handle; 6. Slide plate; 7. Fixed semi-ring gear; 8. Moving semi-ring gear; 9. L-shaped block; 10. Bidirectional screw rod; 11. Rolling ball; 301. Lifting port; 401. Ball cavity; 402. Slide groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-Figure 4 A device for detecting the thickness of an asphalt layer on a highway pavement comprises a sampling machine body 1, a transmission rod 2 installed at the output end of the sampling machine body 1 and a drill tube 3 installed at the lower end of the transmission rod 2. The side wall of the drill tube 3 is penetrated with two symmetrically arranged lifting ports 301. The inner walls of the two lifting ports 301 are slidably connected with a U-shaped frame 4. The interior of the U-shaped frame 4 is connected with a moving component. The exterior of the moving component is connected with two clamping components. The bottom surface of the U-shaped frame 4 located at one end inside the drill tube 3 is connected with a supporting component. The supporting component is matched and aligned with the two clamping components.

[0022] like Figures 1 to 4 As shown, when the highway pavement asphalt layer thickness detection device of the utility model is used, firstly, the sampling machine body 1 is placed on the asphalt pavement to be sampled, and then the motor on the sampling machine body 1 is started, and the motor drives the transmission rod 2 and the drill tube 3 to rotate, and then the hand wheel on the sampling machine body 1 is turned to control the drill tube 3 to descend and contact the asphalt pavement. As the drill tube 3 descends, it will gradually drill into the asphalt road. In the process of drilling into the asphalt road, the asphalt column located inside the drill tube 3 will gradually contact the support assembly and the two clamping assemblies on the bottom surface of the U-shaped frame 4. Then, as the drill tube 3 continues to descend, the asphalt column will also lift the support assembly and the clamping assembly upwards. When the drill tube 3 drills to the bottom At this time, the asphalt column will be completely located inside the drill barrel 3, and this part of the asphalt column will be turned out of a recess from the side by the support component and the clamping component during the contact with the support component and the clamping component. After that, it is only necessary to rotate the moving component, and the moving component can control the two clamping components to approach each other, so that the asphalt column located between the two clamping components can be clamped. Then, by turning the handwheel on the sampler body 1, the drill barrel 3 and the asphalt column that has been clamped by the clamping component inside the drill barrel 3 can be pulled out together. Then, when the drill barrel 3 is moved to a position away from the drill hole on the asphalt pavement, the clamping component is released. At this time, the asphalt column can slide out of the drill barrel 3 by itself due to gravity, and then the asphalt column can be collected.

[0023] Special mention should be made here:

[0024] The highway pavement asphalt layer thickness detection device in the utility model is similar in structure to the existing highway pavement asphalt layer thickness detection device, such as a pavement core drilling sampler disclosed in the patent with publication number CN210665113U.

[0025] When the sampling machine body 1 is sampling on an asphalt road surface, even if the asphalt road surface is on an uphill or downhill road surface, the point where the sampling machine body 1 contacts the drill tube 3 is parallel to the sampling machine body 1, and the asphalt road surface will not be uneven, so the U-shaped frame 4 will not hinder the rotation of the drill tube 3.

[0026] As a preferred solution of the utility model, the moving assembly includes a turning handle 5 and a bidirectional screw rod 10. The turning handle 5 is located at one end of the U-shaped frame 4. The end of the turning handle 5 close to the U-shaped frame 4 is fixedly connected to one end of the bidirectional screw rod 10. The other end of the bidirectional screw rod 10 passes through the U-shaped frame 4 and is connected to the two clamping assemblies.

[0027] More specifically, when it is necessary to control the clamping assembly to move closer, it is only necessary to rotate the handle 5. The rotation of the handle 5 can cause the bidirectional screw rod 10 to rotate. The rotation of the bidirectional screw rod 10 can cause the two clamping assemblies connected on the surface to move closer, thereby clamping the asphalt column from both sides.

[0028] As a preferred solution of the present invention, the bottom surfaces of both ends of the U-shaped frame 4 are provided with sliding grooves 402 , and the upper ends of the two clamping components are respectively located in the two sliding grooves 402 .

[0029] More specifically, by providing the slide groove 402, firstly, support can be provided for the bidirectional screw rod 10 and the clamping assembly; secondly, it can also prevent the clamping assembly from rotating along with the bidirectional screw rod 10 when the screw rod 10 rotates.

[0030] As a preferred solution of the utility model, the clamping assembly includes an L-shaped block 9 and a movable semi-ring tooth 8. One end of the L-shaped block 9 is sleeved and threadedly connected to the outer wall of the bidirectional screw rod 10, and the other end of the L-shaped block 9 is fixedly connected to the outer wall of the movable semi-ring tooth 8. The movable semi-ring tooth 8 matches the support assembly.

[0031] More specifically, when the bidirectional screw rod 10 rotates, the L-shaped block 9 connected to the bidirectional screw rod 10 and restricted by the slide groove 402 can move, and then the L-shaped block 9 can move with the movable semi-ring teeth 8, so that the asphalt column between the two movable semi-ring teeth 8 can be clamped.

[0032] As a preferred solution of the utility model, the supporting assembly includes a slide plate 6 and two fixed semi-ring teeth 7, the outer wall of the slide plate 6 is fixedly connected to the bottom surface of the middle part of the U-shaped frame 4, the bottom surface of the slide plate 6 is fixedly connected to the upper surfaces of the two fixed semi-ring teeth 7, and the two fixed semi-ring teeth 7 are matched and aligned with the two movable semi-ring teeth 8.

[0033] More specifically, when the drill barrel 3 contacts the asphalt pavement, the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 will also just contact the ground. Then, as the drill barrel 3 turns into the asphalt road, the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 in contact with the asphalt column will also drill the side wall of the upper end of the asphalt column, thereby drilling a sunken step on the side of the upper end of the asphalt column. Because the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 have height restrictions, at most a step with the same height as the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 themselves can be drilled into the asphalt column, and the asphalt column will not be completely drilled thin, thereby facilitating the subsequent clamping of the movable semi-ring teeth 8.

[0034] As a preferred solution of the utility model, ball cavities 401 are provided on the bottom surfaces of both ends of the U-shaped frame 4, and the inner walls of the two ball cavities 401 are rollingly connected with rolling balls 11, and the lowest points of the two rolling balls 11 are flush with the lowest point of the drill tube 3.

[0035] More specifically, by setting the ball cavity 401 and the rolling ball 11, before or during the drilling of the drill tube 3 into the asphalt road, and when the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 have not been completely lifted up by the asphalt column, the two rolling balls 11 can roll on the surface of the asphalt road surface to reduce friction.

[0036] Finally, it should be specially noted that the fixed semi-ring teeth 7 and the movable semi-ring teeth 8 do not need to drill a step at the upper end of the asphalt column with the same height as themselves, but only need to drill a height that can be clamped by the movable semi-ring teeth 8.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the thickness of an asphalt layer on a highway pavement, comprising a sampling machine body (1), a transmission rod (2) installed at the output end of the sampling machine body (1), and a drill tube (3) installed at the lower end of the transmission rod (2), characterized in that: The side wall of the drill tube (3) is penetrated by two symmetrically arranged lifting openings (301), the inner walls of the two lifting openings (301) are slidably connected with a U-shaped frame (4), the interior of the U-shaped frame (4) is connected with a moving component, the exterior of the moving component is connected with two clamping components, the bottom surface of the U-shaped frame (4) located at one end inside the drill tube (3) is connected with a supporting component, and the supporting component is matched and aligned with the two clamping components.

2. A road pavement asphalt layer thickness detection device according to claim 1, characterized in that: The moving assembly comprises a turning handle (5) and a bidirectional screw rod (10), wherein the turning handle (5) is located at one end of the U-shaped frame (4), an end of the turning handle (5) close to the U-shaped frame (4) is fixedly connected to one end of the bidirectional screw rod (10), and the other end of the bidirectional screw rod (10) passes through the U-shaped frame (4) and is connected to two clamping assemblies.

3. A road pavement asphalt layer thickness detection device according to claim 2, characterized in that: The bottom surfaces of both ends of the U-shaped frame (4) are provided with sliding grooves (402), and the upper ends of the two clamping components are respectively located in the two sliding grooves (402).

4. A road pavement asphalt layer thickness detection device according to claim 3, characterized in that: The clamping assembly comprises an L-shaped block (9) and a movable semi-ring tooth (8), one end of the L-shaped block (9) is sleeved and threadedly connected to the outer wall of the bidirectional screw rod (10), the other end of the L-shaped block (9) is fixedly connected to the outer side wall of the movable semi-ring tooth (8), and the movable semi-ring tooth (8) matches the supporting assembly.

5. A road pavement asphalt layer thickness detection device according to claim 4, characterized in that: The support assembly comprises a slide plate (6) and two fixed semi-ring teeth (7), the outer wall of the slide plate (6) being fixedly connected to the bottom surface of the middle part of the U-shaped frame (4), the bottom surface of the slide plate (6) being fixedly connected to the upper surfaces of the two fixed semi-ring teeth (7), and the two fixed semi-ring teeth (7) being matched and aligned with the two movable semi-ring teeth (8).

6. A road pavement asphalt layer thickness detection device according to claim 1, characterized in that: The bottom surfaces of both ends of the U-shaped frame (4) are provided with ball cavities (401), the inner walls of the two ball cavities (401) are rollingly connected with rolling balls (11), and the lowest points of the two rolling balls (11) are flush with the lowest point of the drill tube (3).

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