Compacted asphalt mixture density detection device

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a compacted asphalt mixture density detection device, which comprises a base, a pressure sensor, a pressure sensor and a pressure sensor, the weighing mechanism is fixed on the upper surface of the base; the volume measuring mechanism is arranged on the box body and is opposite to the weighing mechanism; wherein the volume measuring mechanism comprises a lifting driving assembly, a thickness measuring assembly and a diameter measuring assembly, the thickness measuring assembly and the diameter measuring assembly are connected with the lifting driving assembly, and the lifting driving assembly is configured to stop driving when the thickness measuring assembly and the diameter measuring assembly are both in contact with the asphalt mixture on the weighing mechanism. Through the arrangement, the asphalt mixture is only required to be placed on the weighing mechanism of the base, the soaking operation is not needed, and the influence of water temperature and soaking time is avoided, so that the accuracy and the efficiency of detecting the density of the asphalt mixture are further improved.

Description

A device for detecting the density of compacted asphalt mixture Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a device for detecting the density of compacted asphalt mixture. Background Technology

[0002] The Marshall test for asphalt mixtures is a method used to evaluate and optimize the performance of asphalt mixtures. After specimen preparation, the specimens are immersed in water at a set temperature for 30 to 40 minutes. The immersed specimens are then placed on a Marshall testing machine for loading tests. The machine applies a vertical load to the specimen at a specific speed until the specimen is destroyed. In the Marshall test for asphalt mixtures, the density of the compacted asphalt mixture is a key indicator for controlling the asphalt mix proportion and the quality of asphalt pavement. Therefore, how to measure the density of asphalt mixtures has become an urgent problem to be solved.

[0003] In the prior art, such as Chinese utility model patent with publication number CN209992334U, published on January 24, 2020, a density meter for testing asphalt mixtures is disclosed, including a balance, a placement platform, a placement bucket, a water storage bucket, etc. When measuring the density of asphalt mixtures, distilled water is placed in the water storage bucket, the asphalt mixture is placed in the water storage bucket, the volume of the asphalt mixture is obtained by collecting the volume of the overflowing water, and the density is obtained by measuring the mass of the asphalt mixture.

[0004] However, the density measurement methods described above are time-consuming, and the test results are affected by factors such as water temperature and water tension, which affects the accuracy of the test. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present invention provides a compacted asphalt mixture density testing device to improve the accuracy and efficiency of asphalt mixture density testing.

[0006] According to a first aspect of the present invention, a device for detecting the density of compacted asphalt mixture is provided, comprising:

[0007] A base on which a housing is attached;

[0008] A weighing mechanism is fixed to the upper surface of the base;

[0009] A volume measuring mechanism is mounted on the box and is positioned opposite to the weighing mechanism.

[0010] The volume measuring mechanism includes a lifting drive assembly, a thickness measuring assembly connected to the lifting drive assembly, and a diameter measuring assembly. The lifting drive assembly is configured to stop driving when both the thickness measuring assembly and the diameter measuring assembly are in contact with the asphalt mixture on the weighing mechanism.

[0011] Furthermore, the weighing mechanism includes a support member fixed to the upper surface of the base, and a weighing sensor disposed on the surface of the support member.

[0012] Furthermore, the diameter measuring component includes a sleeve connected to the lifting drive component, the inner diameter of the sleeve being larger than that of the asphalt mixture, and a laser rangefinder having a laser rangefinder on the inner wall of the sleeve facing the center of the sleeve.

[0013] Furthermore, the thickness measuring assembly includes a telescopic rod sleeved inside the sleeve and a distance sensor fixed to the bottom of the telescopic rod and positioned towards the weighing mechanism.

[0014] Furthermore, the enclosure is made of a transparent material.

[0015] Furthermore, the base also has a control panel, which has a weighing button connected to the weighing mechanism and a volume measurement button connected to the volume measuring mechanism.

[0016] Furthermore, the control panel also includes a display button.

[0017] Furthermore, the base also has a display panel, which is connected to the weighing mechanism and the volume measuring mechanism, for displaying the mass, volume and density of the asphalt mixture.

[0018] Furthermore, the control panel also has a storage button for storing information on the mass, volume, and density of the asphalt mixture.

[0019] The beneficial effects of this utility model are as follows: By using a weighing mechanism on the base and a volume measuring mechanism on the box facing the weighing mechanism, after the asphalt mixture is placed on the weighing mechanism, the thickness measuring component and the diameter measuring component are controlled by the lifting drive component to contact the asphalt mixture, thereby measuring the mass and volume of the asphalt mixture, and calculating the density of the asphalt mixture. Compared with the prior art, the above measurement method only requires the asphalt mixture to be placed on the weighing mechanism on the base, without the need for immersion in water, and is not affected by water temperature and soaking time, thereby improving the accuracy and efficiency of asphalt mixture density detection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a schematic diagram of the compacted asphalt mixture density detection device in an embodiment of this utility model;

[0022] Figure 2 is a structural schematic diagram of the weighing mechanism in an embodiment of this utility model;

[0023] Figure 3 is a schematic diagram of the volume measuring mechanism in an embodiment of this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] The compacted asphalt mixture density testing device shown in Figures 1 to 3 includes a base 1, a weighing mechanism 3, and a volume measuring mechanism 4. As shown in Figure 1, a box 2 is connected to the base 1. In some embodiments of the utility model, the box 2 on the base 1 can be made of a transparent material, such as glass or acrylic, which protects the internal mechanism of the box 2 and also facilitates the operator to observe it from the outside.

[0028] The weighing mechanism 3 is fixed on the upper surface of the base 1, as shown in Figure 1. In some embodiments of this utility model, multiple weighing mechanisms 3 can be provided to realize the density measurement of multiple asphalt mixture specimens 01 at one time. There are various specific weighing methods, such as using an electronic scale to measure the mass of the asphalt mixture specimens 01.

[0029] The volume measuring mechanism 4 is disposed on the box 2 and is disposed opposite to the weighing mechanism 3. Please continue to refer to Figure 1. In the embodiment of this utility model, the volume measuring mechanism 4 includes a lifting drive assembly 41, a thickness measuring assembly 43 connected to the lifting drive assembly 41, and a diameter measuring assembly 42. The lifting drive assembly 41 is configured to stop driving when both the thickness measuring assembly 43 and the diameter measuring assembly 42 are in contact with the asphalt mixture on the weighing mechanism 3.

[0030] In the above embodiment, by using the weighing mechanism 3 provided on the base 1 and the volume measuring mechanism 4 provided on the box 2 facing the weighing mechanism 3, after the asphalt mixture is placed on the weighing mechanism 3, the thickness measuring component 43 and the diameter measuring component 42 are controlled by the lifting drive component 41 to contact the asphalt mixture, thereby measuring the mass and volume of the asphalt mixture, and calculating the density of the asphalt mixture. Compared with the prior art, the above measurement method only requires the asphalt mixture to be placed on the weighing mechanism 3 on the base 1, without the need for immersion in water, and is not affected by water temperature and soaking time, thereby improving the accuracy and efficiency of asphalt mixture density detection.

[0031] Based on the above embodiments, in some specific embodiments of this utility model, as shown in FIG2, the weighing mechanism 3 includes a support member 31 fixed to the upper surface of the base 1, and a weighing sensor 32 disposed on the surface of the support member 31. In the embodiments of this utility model, the support member 31 may adopt a cylindrical structure, which serves to fix the weighing sensor 32.

[0032] Optionally, as shown in Figure 3, the diameter measuring component 42 includes a sleeve 42a connected to the lifting drive component 41. The inner diameter of the sleeve 42a is larger than that of the asphalt mixture, and the inner wall of the sleeve 42a has a laser rangefinder 42b facing the center of the sleeve 42a. In some embodiments of this invention, two laser rangefinders 42b can be arranged opposite each other in the diameter direction of the sleeve 42a. In this way, when the asphalt mixture is placed at the center of the support 31, the diameter of the asphalt mixture can be obtained by subtracting the distance between the inner diameter of the sleeve 42a and the outer diameter of the asphalt mixture measured by the two laser rangefinders 42b from the diameter of the sleeve 42a. Of course, in some embodiments of this invention, the sleeve 42a can also be configured as a rotatable structure. By rotating the sleeve 42a, multiple angular distances can be measured, and the shape of the asphalt mixture can be drawn to obtain the diameter of the asphalt mixture.

[0033] Optionally, as shown in Figure 3, in some embodiments of this utility model, the thickness measuring component 43 includes a telescopic rod 43a sleeved inside a sleeve 42a and a distance sensor 43b fixed to the bottom of the telescopic rod 43a and facing the weighing mechanism 3. Specifically, before placing the asphalt mixture specimen 01, the distance sensor 43b is used to measure the distance between the specimen and the support member 31. After the asphalt mixture is placed, the telescopic rod 43a is driven down by the lifting drive component 41, causing the sleeve 42a to first contact the support member 31. Then, the telescopic rod 43a continues to fall until the distance sensor 43b contacts the asphalt sensor. At this point, the distance between the distance sensor 43b and the support member 31 is measured again, thus obtaining the thickness of the asphalt mixture specimen 01. After measuring the diameter and thickness of the asphalt mixture specimen 01, the volume of the asphalt mixture specimen 01 can be obtained. The density of the asphalt mixture can then be obtained by dividing the mass by the volume.

[0034] In some embodiments of this utility model, as shown in FIG1, the base 1 also has a control panel, which has a weighing button connected to the weighing mechanism 3 and a volume measurement button connected to the volume measuring mechanism 4. The control panel also includes a display button. In specific operation, in some embodiments of this utility model, for example, button A is the weighing button, and when the weighing button is pressed, the asphalt mixture is weighed; button B is the volume measurement button, and when button B is pressed, the volume is measured. In addition, in some embodiments of this utility model, the base 1 also has a display panel, which is connected to the weighing mechanism 3 and the volume measuring mechanism 4, and is used to display the mass, volume and density of the asphalt mixture. Moreover, in some embodiments of this utility model, in order to facilitate data retrieval, the control panel also has a storage button for storing the mass, volume and density information of the asphalt mixture. The above-mentioned storage and display buttons can be C and D in FIG1, and it should be noted that the above-mentioned buttons are prior art in this field, and those skilled in the art can set them according to actual needs. The specific component composition and circuit diagram information will not be described in detail here.

[0035] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the density of compacted asphalt mixture, characterized in that, include: A base, on which a housing is connected; a weighing mechanism, fixed to the upper surface of the base; a volume measuring mechanism, disposed on the housing and opposite to the weighing mechanism; wherein, the volume measuring mechanism includes a lifting drive assembly, a thickness measuring assembly and a diameter measuring assembly connected to the lifting drive assembly, the lifting drive assembly being configured to stop driving when both the thickness measuring assembly and the diameter measuring assembly are in contact with the asphalt mixture on the weighing mechanism.

2. The compacted asphalt mixture density testing device according to claim 1, characterized in that, The weighing mechanism includes a support fixed to the upper surface of the base and a weighing sensor disposed on the surface of the support.

3. The compacted asphalt mixture density testing device according to claim 1, characterized in that, The diameter measuring component includes a sleeve connected to the lifting drive component. The inner diameter of the sleeve is larger than that of the asphalt mixture, and the inner wall of the sleeve has a laser rangefinder facing the center of the sleeve.

4. The compacted asphalt mixture density testing device according to claim 3, characterized in that, The thickness measuring assembly includes a telescopic rod sleeved inside the sleeve and a distance sensor fixed to the bottom of the telescopic rod and positioned towards the weighing mechanism.

5. The compacted asphalt mixture density testing device according to claim 1, characterized in that, The enclosure is made of transparent material.

6. The compacted asphalt mixture density testing device according to claim 1, characterized in that, The base also has a control panel, which has a weighing button connected to the weighing mechanism and a volume measurement button connected to the volume measurement mechanism.

7. The compacted asphalt mixture density testing device according to claim 6, characterized in that, The control panel also includes a display button.

8. The compacted asphalt mixture density testing device according to claim 6, characterized in that, The base also has a display panel, which is connected to the weighing mechanism and the volume measuring mechanism to display the mass, volume and density of the asphalt mixture.

9. The compacted asphalt mixture density testing device according to claim 7, characterized in that, The control panel also has a storage button for storing information on the mass, volume, and density of the asphalt mixture.

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