Compaction degree detection device

Abstract

The utility model discloses a compaction degree detection device, belongs to the technical field of sampling in compaction degree detection, and solves the problems that the sampling speed is too slow or a sampled asphalt concrete layer sample is not representative because the sampling depth of an asphalt concrete layer cannot be clearly and quickly known in the prior art. The sampling device comprises a bracket, a motor which moves up and down along the bracket, and a sampling barrel which is connected with the motor through a rotating shaft, wherein a sampling limiting structure is arranged on the sampling barrel; the sampling limiting structure comprises a sampling depth adjusting structure arranged on the sampling barrel, and a flexible pressure sensing structure which is arranged on the sampling depth adjusting structure and is in contact or separation fit with the ground. The sampling device is used for sampling the asphalt concrete layer.

Description

Technical Field

[0001] The invention discloses a compaction detection device, which is used for sampling asphalt concrete layers and belongs to the technical field of sampling in compaction detection. Background Art

[0002] Sampling the asphalt layer is a key step in compaction testing, which helps to evaluate the quality of the asphalt pavement. The following are the basic steps for sampling the asphalt layer:

[0003] Select sampling locations: Select sampling locations in representative areas based on design requirements and engineering specifications. Typically, sampling is performed at different sections and depths of the pavement to ensure comprehensiveness and accuracy of the results.

[0004] Prepare sampling tools: Commonly used sampling tools include core drills, cutters, and samplers. Ensure these tools are clean, sharp, and calibrated and maintained as necessary before use.

[0005] Sampling: Use the selected sampling tool to sample at the selected location. Ensure that the sample is not damaged during the sampling process and minimize disturbance of the sample. For core sampling, maintain a constant drilling speed to avoid damage caused by excessive speed or slowness.

[0006] Label and store samples: Immediately after sampling, label the sample and record the sampling location, date, and other relevant information. Store the sample in a dry, cool place away from direct sunlight and high temperatures.

[0007] Transport and Handle Samples: Ensure sample integrity and clear identification before shipping to the laboratory. Take appropriate measures to prevent sample damage or contamination during transportation. Upon arrival at the laboratory, handle and test according to laboratory requirements.

[0008] Analyze and record results: Analyze samples in the laboratory to evaluate the compaction and other relevant parameters of the asphalt concrete layer. Record the results in appropriate documentation and compare them with the design requirements and project specifications.

[0009] The existing technology has the following technical problems when sampling the asphalt concrete layer:

[0010] The sampling depth of the asphalt concrete layer cannot be known clearly and quickly, which may easily lead to problems such as the sampling speed being too slow or the asphalt concrete layer sample being unrepresentative. Utility Model Content

[0011] The purpose of the utility model is to provide a compaction detection device to solve the problem that the existing technology cannot clearly and quickly know the sampling depth of the asphalt concrete layer, which easily causes the sampling speed to be too slow or the sampled asphalt concrete layer sample is not representative.

[0012] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0013] A compaction detection device includes a bracket, a motor that moves up and down along the bracket, and a sampling cylinder connected to the motor via a rotating shaft, wherein a sampling limit structure is provided on the sampling cylinder;

[0014] The sampling limit structure includes a sampling depth adjustment structure arranged on the sampling cylinder, and a flexible pressure sensing structure arranged on the sampling depth adjustment structure and in contact with or separated from the ground.

[0015] Furthermore, the sampling depth adjustment structure includes a connecting piece arranged on one end of the top of the sampling tube, the connecting piece is provided with a threaded hole, an inverted T-shaped threaded rod that matches the thread of the threaded hole, and a flexible pressure sensing structure is provided on the inverted T-shaped threaded rod.

[0016] Furthermore, the connecting piece is provided with a telescopic rod with a scale, and a rolling ball is provided at the bottom of the telescopic rod; or

[0017] The inverted T-shaped threaded rod is provided with a scale.

[0018] Furthermore, an annular T-slot is provided on one side of the top of the sampling tube, an inverted T-shaped threaded piece is slidably provided in the annular T-slot, a mounting hole that cooperates with the inverted T-shaped threaded piece is provided on the connecting piece, and a nut that cooperates with the inverted T-shaped threaded piece to fix the connecting rod.

[0019] Furthermore, the inverted T-shaped threaded rod includes a screw rod and a screw plate connected to the screw rod;

[0020] The flexible pressure sensing structure includes a flexible sensor and multiple elastic reset structures arranged on the bottom surface of the screw plate, a movable plate connected to the multiple elastic reset structures, and a pressing button arranged on the movable plate to press or release the flexible sensor.

[0021] Furthermore, the flexible pressure sensing structure also includes a rubber protective sleeve arranged on the screw plate to protect the flexible sensor, the elastic reset structure, the movable plate and the push button.

[0022] Furthermore, the elastic reset structure is a reset spring, or a reset spring sleeved with a telescopic rod, or foam, or a spring reset sheet.

[0023] Furthermore, a rolling ball is provided at the bottom of the telescopic rod.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] First, the present invention accurately adjusts the distance between the flexible pressure sensing structure and the ground through the sampling depth adjustment structure. During the sampling process of the sampling tube, the flexible pressure sensing structure provides a real-time pressure feedback signal to indicate whether it is in contact with the ground, so as to quickly respond to whether the sampling depth has been reached. When the sampling depth is reached, not only is a signal feedback provided, but the sampling depth adjustment structure also limits the sampling depth. This allows for clear and rapid determination of whether the sampling depth of the asphalt concrete layer meets the standard, thereby avoiding problems such as slow sampling speed or unrepresentative asphalt concrete layer samples.

[0026] Second, the sampling depth adjustment structure of the present invention quickly adjusts the distance between the flexible pressure sensing structure and the ground by adjusting the inverted T-shaped threaded rod on the connecting piece to rise or fall, thereby improving the sampling efficiency;

[0027] 3. The purpose of providing a telescopic rod with a scale on the connecting piece or providing a scale on the inverted T-shaped threaded rod in the present invention is to facilitate intuitive adjustment of the height of the inverted T-shaped threaded rod thread rise or fall;

[0028] Fourth, the present invention provides an annular T-slot, an inverted T-shaped threaded member, and a nut on the sampling tube to enable the sampling limit structure to rotate along the circumference of the sampling tube. The purpose is to facilitate adjustment of the position of the flexible pressure sensing structure according to different sampling environments to ensure accurate sampling.

[0029] 5. When the flexible pressure sensing structure of the present invention contacts the ground and continues to sample downward during sampling, the ground presses the movable plate to contract the elastic reset structure, causing the push button to press the flexible sensor. When the flexible sensor is pressed, it will feedback a pressure signal, so that the sampling depth can be quickly obtained.

[0030] 6. The purpose of setting the rubber protective cover in this utility model is to protect the flexible sensor, elastic reset structure, movable plate and push button from water and dust.

[0031] 7. The purpose of arranging the rolling ball at the bottom of the telescopic rod in the present invention is to facilitate the sliding cooperation between the rolling ball and the screw plate when they come into contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a structural diagram of the utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the sampling depth adjustment structure and the inverted T-shaped threaded member in the present invention;

[0035] Figure 3 This is a schematic structural diagram of the connecting piece in the present utility model;

[0036] Figure 4 This is a structural diagram of a ring-shaped T-groove provided on the sampling tube in the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the flexible pressure sensing structure of the present invention, wherein the flexible sensor can use a battery or an external power supply. When an external power supply is used, a wire hole needs to be provided on the screw plate;

[0038] Figure 6 for Figure 5 sectional view of

[0039] In the figure: 1- bracket, 2- motor, 3- sampling tube, 4- sampling limit structure, 5- sampling depth adjustment structure, 6- flexible pressure sensing structure, 7- connecting piece, 8- inverted T-shaped threaded rod, 9- scale, 10- telescopic rod, 11- rolling ball, 12- annular T-slot, 13- inverted T-shaped threaded piece, 14- threaded hole, 15- mounting hole, 16- nut, 17- screw rod, 18- screw plate, 19- flexible sensor, 20- elastic reset structure, 21- moving plate, 22- push button, 23- rubber protective sleeve. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 shall fall within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0042] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In addition, the terms "first", "second", "third", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0044] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0045] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0047] Example 1

[0048] In order to solve the problem that the existing technology cannot clearly and quickly know the sampling depth of the asphalt concrete layer, which easily causes the sampling speed to be too slow or the asphalt concrete layer sampled is not representative. Figure 1-6 As shown, a compaction detection device is provided, including a bracket 1, a motor 2 that moves up and down along the bracket 1, a sampling cylinder 3 connected to the motor 2 through a rotating shaft, and a sampling limit structure 4 is provided on the sampling cylinder 3; the sampling limit structure 4 includes a sampling depth adjustment structure 5 provided on the sampling cylinder 3, and a flexible pressure sensing structure 6 provided on the sampling depth adjustment structure 5 and in contact with or separated from the ground. The flexible sensor provides signal feedback via wired or WI FI.

[0049] In practice, the compaction detection device (i.e., the sampling device) is placed in a designated position, and the spacing between the flexible pressure sensing structure 6 and the bottom of the sampling tube is adjusted by the sampling depth adjustment structure 5. After adjustment, the motor is started and simultaneously moved along the bottom of the bracket to sample until the flexible pressure sensing structure 6 sends a pressure signal (which can be received by a mobile phone or displayed by an indicator light). The motor can then be turned off, and the motor and the sampling tube are simultaneously moved upward along the bracket to finally obtain a sample of the asphalt concrete layer. Therefore, this embodiment accurately adjusts the spacing between the flexible pressure sensing structure and the ground through the sampling depth adjustment structure, and during the sampling process of the sampling tube, the flexible pressure sensing structure provides a real-time pressure feedback signal to indicate whether it is in contact with the ground, so as to quickly reflect whether the sampling depth has been reached. When the sampling depth is reached, not only is a signal feedback provided, but the sampling depth adjustment structure also limits the sampling depth. That is, it is possible to clearly and quickly know whether the sampling depth of the asphalt concrete layer meets the standard, thereby avoiding problems such as too slow sampling speed or unrepresentative asphalt concrete layer samples.

[0050] Example 2

[0051] Based on Example 1, the sampling depth adjustment structure 5 includes a connector 7 disposed at one end of the top of the sampling tube 3. The connector is provided with a threaded hole 14, an inverted T-shaped threaded rod 8 that engages with the threaded hole 14, and a flexible pressure sensing structure 6 disposed on the inverted T-shaped threaded rod 8. The height of the inverted T-shaped threaded rod 8 can be adjusted by rotating the inverted T-shaped threaded rod 8 to engage the threaded hole 14, thereby facilitating rapid adjustment of the distance between the flexible pressure sensing structure and the ground, thereby improving sampling efficiency. The inverted T-shaped threaded rod 8 can also be provided with a nut to enhance the stability of the sampling depth limit during sampling.

[0052] Example 3

[0053] In addition to Example 2, the connector 7 is further provided with a telescopic rod 10 with a scale 9, or the inverted T-shaped threaded rod 8 is provided with a scale. The purpose of providing a telescopic rod with a scale on the connector or providing a scale on the inverted T-shaped threaded rod is to facilitate intuitive adjustment of the height of the inverted T-shaped threaded rod's threaded rise or fall.

[0054] Example 4

[0055] On the basis of Example 3, an annular T-slot 12 is provided on one side of the top of the sampling tube 3, and an inverted T-slot 13 is slidably provided in the annular T-slot 12. The connecting member 7 is provided with a mounting hole 15 that cooperates with the inverted T-slot 13, and a nut 16 that cooperates with the inverted T-slot 13 to fix the connecting rod. That is, when the nut is not fixed to the connecting member, the inverted T-slot 13 can be driven by the sliding connecting member to rotate along the annular T-slot 12 to a specified position, and then fixed by the nut. That is, by providing an annular T-slot, an inverted T-slot and a nut on the sampling tube, the sampling limit structure is rotated along the circumference of the sampling tube, with the purpose of facilitating the adjustment of the position of the flexible pressure sensing structure according to different sampling environments to ensure accurate sampling. In practice, it is not ruled out that the connecting member can also adopt other methods to cooperate with the rotation of the sampling tube.

[0056] Example 5

[0057] Based on Example 4, the inverted T-shaped threaded rod 8 includes a screw 17 and a screw plate 18 connected to the screw 17; the flexible pressure sensing structure 6 includes a flexible sensor 19 disposed on the bottom surface of the screw plate 18, multiple elastic reset structures 20, a movable plate 21 connected to the multiple elastic reset structures 20, and a push button 22 disposed on the movable plate 21 for pressing or releasing the flexible sensor 19. The elastic reset structure 20 is a reset spring, a reset spring encased in a telescopic rod, foam, or a spring reset plate. When the flexible pressure sensing structure contacts the ground during sampling and continues downward sampling, the ground presses the movable plate, which in turn compresses the elastic reset structure, causing the push button to press the flexible sensor. Pressing the flexible sensor generates a pressure signal, allowing rapid detection of the sampling depth. Conversely, when the elastic reset structure 20 resets and the tension exerted on the movable plate and push button after reset causes the push button to contact the flexible sensor and not press the flexible sensor.

[0058] Example 6

[0059] Based on Example 5, the flexible pressure sensing structure 6 further includes a rubber protective sleeve 23 disposed on the screw plate 18 to protect the flexible sensor 19, the elastic reset structure 20, the movable plate 21, and the push button 22. The purpose of providing the rubber protective sleeve is to protect the flexible sensor, the elastic reset structure, the movable plate, and the push button from water and dust.

[0060] Example 7

[0061] In addition to Example 6, a ball 11 is provided at the bottom of the telescopic rod 10. This ball facilitates sliding engagement with the screw plate when in contact. In practice, upward movement of the inverted T-shaped threaded rod 8 compresses the telescopic rod 10 to contract, and vice versa.

Claims

1. A compaction detection device, comprising a bracket (1), a motor (2) that moves up and down along the bracket (1), and a sampling tube (3) connected to the motor (2) via a rotating shaft, characterized in that: The sampling cylinder (3) is provided with a sampling limiting structure (4); The sampling limit structure (4) comprises a sampling depth adjustment structure (5) arranged on the sampling barrel (3), and a flexible pressure sensing structure (6) arranged on the sampling depth adjustment structure (5) and in contact with or separated from the ground.

2. A compaction detection device according to claim 1, characterized in that: The sampling depth adjustment structure (5) comprises a connecting piece (7) arranged on one end of the top of the sampling tube (3), the connecting piece being provided with a threaded hole (14), an inverted T-shaped threaded rod (8) threadedly matched with the threaded hole (14), and a flexible pressure sensing structure (6) being provided on the inverted T-shaped threaded rod (8).

3. A compaction detection device according to claim 2, characterized in that: The connecting member (7) is further provided with a telescopic rod (10) with a scale (9); or The inverted T-shaped threaded rod (8) is provided with a scale.

4. A compaction detection device according to any one of claims 1 to 3, characterized in that: An annular T-shaped groove (12) is provided on one side of the top of the sampling tube (3), an inverted T-shaped threaded member (13) is slidably provided in the annular T-shaped groove (12), a mounting hole (15) matching with the inverted T-shaped threaded member (13) is provided on the connecting member (7), and a nut (16) matching with the inverted T-shaped threaded member (13) for fixing the connecting rod is provided.

5. The compaction detection device according to claim 3, characterized in that: The inverted T-shaped threaded rod (8) comprises a screw rod (17) and a screw plate (18) connected to the screw rod (17); The flexible pressure sensing structure (6) includes a flexible sensor (19) and a plurality of elastic reset structures (20) arranged on the bottom surface of the screw plate (18), a movable plate (21) connected to the plurality of elastic reset structures (20), and a pressing button (22) arranged on the movable plate (21) for pressing or releasing the flexible sensor (19).

6. A compaction detection device according to claim 5, characterized in that: The flexible pressure sensing structure (6) further comprises a rubber protective sleeve (23) arranged on the screw plate (18) for protecting the flexible sensor (19), the elastic reset structure (20), the movable plate (21) and the pressing button (22).

7. A compaction detection device according to claim 6, characterized in that: The elastic reset structure (20) is a reset spring, or a reset spring sleeved with a telescopic rod, or foam, or a spring reset sheet.

8. A compaction detection device according to claim 7, characterized in that: A rolling ball (11) is provided at the bottom of the telescopic rod (10).

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