Asphalt mixture Marshall test piece height measuring device

Abstract

The utility model discloses an asphalt mixture Marshall test piece height measuring device, which belongs to the technical field of highway water transport test detection and comprises a base, a first placing support and a second placing support, the first placing support is used for placing a large Marshall test piece, and the second placing support is used for placing a standard Marshall test piece. First laser ranging units are arranged on the two sides of the first containing support, second laser ranging units are arranged on the two sides of the second containing support, a control panel is arranged on the base, a main switch button, a first measuring button, a second measuring button and a display unit are arranged on the control panel, and a control unit is arranged in the control panel. The signal input end of the control unit is electrically connected with the first laser ranging unit and the second laser ranging unit, and the signal output end of the control unit is electrically connected with the display unit. The device has the advantages of being convenient to operate and high in working efficiency, in addition, measurement accuracy is high, and reliability of test results is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of asphalt mixture Marshall test piece height measuring devices, belong to highway water transport test detection technical field. BACKGROUND

[0002] The Marshall test of asphalt mixture is the most commonly used test in asphalt mixture, and its test process is to standard compact the test piece under specified test conditions, to determine the stability and flow value of asphalt mixture and other indicators.Cylinder Marshall test piece is used in the current specification of Marshall test, and the standard Marshall test piece after standard compaction should be immediately measured whether its height meets the requirement.Specification requires that the height is divided into standard test piece height 63.5±1.3mm, and large test piece height 95.3±2.5mm, if the height does not meet the above requirement, the test piece should be discarded, and the height of this test piece is recorded, the mass of subsequent test piece is calculated by formula, then the test piece is re-compacted according to the calculated mass of mixture to ensure that it meets the specification requirement.

[0003] The method for measuring the height of Marshall test piece without demolding at present is to measure the height of test piece from the top of test mold by vernier caliper, that is, the height difference between the front end depth scale part of vernier caliper and the top of test mold is measured, then the height of test mold is measured, and the height of Marshall test piece is obtained by subtracting the sum of the two height differences from the height of test mold.The above method has the problems of inconvenient operation, tedious process and low work efficiency, and the manual reading error is large, and the cumulative error of measured value is large, which will affect the accuracy of data reading and greatly affect the reliability of test result. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of prior art, and provide an asphalt mixture Marshall test piece height measuring device, which has the advantages of convenient operation and high work efficiency, and high measurement accuracy, and ensures the reliability of test result.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The application discloses a kind of asphalt mixture Marshall test piece height measuring device, including base, first placement support for placing large Marshall test piece is arranged on the base, and second placement support for placing standard Marshall test piece is arranged, first laser ranging unit is arranged on the both sides of the first placement support, second laser ranging unit is arranged on the both sides of the second placement support, control panel is arranged on the base, total switch button, first measurement button, second measurement button and display unit are arranged on the control panel, first measurement button and second measurement button are respectively electrically connected with the control switch of first laser ranging unit and second laser ranging unit, total switch button is connected on device total power supply, control unit is arranged in the control panel, the signal input end of control unit is respectively electrically connected with first laser ranging unit and second laser ranging unit, and the signal output end of control unit is electrically connected with display unit.

[0007] Horizontal detection bubble is arranged on the base.

[0008] The number of horizontal detection bubble is two, and is located at the position of two side edges of the base.

[0009] Adjustable foot bolts are respectively arranged at the four corners of the lower surface of the base.

[0010] The first laser ranging unit and the second laser ranging unit include probe fixed base, and a plurality of laser ranging probes are arranged at equal angles in the inner side of the probe fixed base.

[0011] The number of laser ranging probes is four.

[0012] The base is rectangular.

[0013] The precision of the laser ranging probe is 0.1mm.

[0014] The utility model discloses an asphalt mixture marshall test piece height measuring device, is provided with the first placing support for placing large -scale marshall test piece and the second placing support for placing standard marshall test piece on the base, is provided with the first laser range unit on the both sides of first placing support, is provided with the second laser range unit on the both sides of second placing support, is provided with the control panel on the base, is provided with the control unit in the control panel, the signal input end of control unit is connected with first laser range unit and second laser range unit electricity respectively, and the signal output end of control unit is connected with display unit electricity, and the distance between two laser range units and marshall test piece is measured, and then the interval between two laser range units is fixed, can indirectly obtain marshall test piece length, and the utility model only needs to measure to put marshall test piece on the placing support, has convenient operation, high work efficiency's advantage, and in addition compared with the measurement mode of vernier caliper that present existing manual adopts, laser measurement accuracy is high, can guarantee test result reliability. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model kind of asphalt mixture marshall test piece height measuring device;

[0016] Figure 2 It is the structural schematic diagram of first laser range unit and second laser range unit in the utility model;

[0017] Figure 3 It is the overhead structure schematic diagram of the utility model;

[0018] The reference signs in the drawing are as follows: 1 - base;2 - control panel;3 - general switch button;4 - first measurement button;5 - second measurement button;6 - adjustable foot bolt;7 - horizontal detection bubble;8 - first laser range unit;9 - first placing support;10 - large -scale marshall test piece;11 - second laser range unit;12 - second placing support;13 - standard marshall test piece;14 - probe fixed base;15 - laser range probe. DETAILED DESCRIPTION

[0019] Embodiment 1

[0020] As Figure 1The utility model discloses a kind of asphalt mixture Marshall test piece height measuring devices, including pedestal 1, pedestal 1 is provided with the first placement support 9 for placing large Marshall test piece 10, and the second placement support 12 for placing standard Marshall test piece 13 is arranged. First placement support 9 both sides are provided with first laser ranging unit 8, and the interval between two first laser ranging unit 8 and large Marshall test piece 10 two sides can be measured, since the interval between two first laser ranging unit 8 is fixed and known, then the length of large Marshall test piece 10 can be obtained by the interval between first laser ranging unit 8 subtracts the sum of the interval measured by two first laser ranging unit 8. Second placement support 12 both sides are provided with second laser ranging unit 11, and the length measurement principle of standard Marshall test piece 13 is same as the foregoing.

[0021] Pedestal 1 is provided with control panel 2, and control panel 2 is provided with total switch button 3, first measurement button 4, second measurement button 5 and display unit. First measurement button 4 and second measurement button 5 are electrically connected with the control switch of first laser ranging unit 8 and second laser ranging unit 11 respectively, for opening and closing first laser ranging unit 8 and second laser ranging unit 11. Total switch button 3 is connected to the overall power supply of device, and controls the work and power-off of the whole device. Control unit is arranged in control panel 2, and the signal input end of control unit is electrically connected with first laser ranging unit 8 and second laser ranging unit 11 respectively, and the signal output end of control unit is electrically connected with display unit. Control unit is used for processing the signal of first laser ranging unit 8 and second laser ranging unit 11, and outputs the length of Marshall test piece to display unit. The technology can be achieved by prior art, and the specific working principle will not be elaborated.

[0022] The working process of the utility model is as follows: first, press total switch button 3, so that the whole measuring device is powered on. When large Marshall test piece 10 needs to be measured, place the compacted large Marshall test piece 10 into first placement support 9, and then press first measurement button 4 to power on first laser ranging unit 8. First laser ranging unit 8 inputs the measured signal into control unit to obtain height data, which is finally displayed through display unit. When standard Marshall test piece 13 needs to be measured, place the compacted standard Marshall test piece 13 into second placement support 12, and then press second measurement button 5 to power on second laser ranging unit 11. Second laser ranging unit 11 inputs the measured signal into control unit to obtain height data, which is finally displayed through display unit.

[0023] Example 2

[0024] As Figure 1As shown in the utility model discloses a kind of asphalt mixture Marshall test piece height measuring devices, including pedestal 1, pedestal 1 shape is rectangle, 1000mm long, 800mm wide, its function is to carry each test equipment. Pedestal 1 lower surface four corners are respectively provided with adjustable foot bolt 6, for adjusting the level of pedestal 1. Pedestal 1 is provided with horizontal detection bubble 7. The number of horizontal detection bubble 7 is two, located on the two side edges of pedestal 1, for checking whether pedestal 1 is horizontal.

[0025] Pedestal 1 is provided with first placing support 9 for placing large Marshall test piece 10, and second placing support 12 for placing standard Marshall test piece 13. First placing support 9 is provided with first laser ranging unit 8 on both sides, and the distance between the two first laser ranging units 8 and the two sides of the large Marshall test piece 10 can be measured. Since the distance between the two first laser ranging units 8 is fixed and known, the length of the large Marshall test piece 10 can be obtained by subtracting the sum of the measured distances of the two first laser ranging units 8 from the distance between the two first laser ranging units 8. The second placing support 12 is provided with second laser ranging unit 11 on both sides, and the length measurement principle of the standard Marshall test piece 13 is the same as the foregoing.

[0026] Pedestal 1 is provided with control panel 2, which calculates the height of the test piece by the data returned by the laser ranging distance instrument. Control panel 2 is provided with a total switch button 3, a first measurement button 4, a second measurement button 5 and a display unit. The first measurement button 4 and the second measurement button 5 are respectively electrically connected with the control switches of the first laser ranging unit 8 and the second laser ranging unit 11, for turning on and off the first laser ranging unit 8 and the second laser ranging unit 11. The total switch button 3 is connected to the overall power supply of the device, and controls the overall work and power-off of the device. The control panel 2 is provided with a control unit, and the signal input end of the control unit is electrically connected with the first laser ranging unit 8 and the second laser ranging unit 11, and the signal output end of the control unit is electrically connected with the display unit. The control unit is used for processing the signals of the first laser ranging unit 8 and the second laser ranging unit 11, and outputting the length of the Marshall test piece to the display unit.

[0027] As Figure 2 shown in the utility model, the first laser ranging unit 8 and the second laser ranging unit 11 include a probe fixing base 14, and the probe fixing base 14 is circular. The diameter of the probe fixing base 14 corresponding to the first laser ranging unit 8 is 152.4mm, and the diameter of the probe fixing base 14 corresponding to the second laser ranging unit 11 is 101.6mm. The inside of the probe fixing base 14 is provided with a plurality of laser ranging probes 15 arranged at equal angles, and the accuracy of the laser ranging probe is 0.1mm. The number of laser ranging probes 15 is four.

[0028] AsFigure 3 As shown, taking the height measurement of the large Marshall specimen 10 as an example, the distance L between the two first laser ranging units 8 is fixed at 600.0 mm, the four laser ranging probes 15 on one first laser ranging unit 8 respectively measure the distances from the surface of the large Marshall specimen 10 as a1, a2, a3, a4, and the four laser ranging probes 15 on the other first laser ranging unit 8 respectively measure the distances from the surface of the large Marshall specimen 10 as b1, b2, b3, b4, then the height of the specimen is h = L - (a1 + a2 + a3 + a4) / 4 - (b1 + b2 + b3 + b4) / 4.

[0029] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered within the scope of the present application.

Claims

1. A device for measuring the height of asphalt mixture Marshall specimens, characterized in that: The device includes a base (1), on which a first placement bracket (9) for placing a large Marshall specimen (10) and a second placement bracket (12) for placing a standard Marshall specimen (13) are provided. A first laser ranging unit (8) is provided on both sides of the first placement bracket (9), and a second laser ranging unit (11) is provided on both sides of the second placement bracket (12). A control panel (2) is provided on the base (1), and the control panel (2) is provided with a main switch button (3), a first measurement button (4), a second measurement button (5) and a display unit. The first measurement button (4) and the second measurement button (5) are electrically connected to the control switches of the first laser ranging unit (8) and the second laser ranging unit (11) respectively. The main switch button (3) is connected to the overall power supply of the device. A control unit is provided inside the control panel (2). The signal input terminal of the control unit is electrically connected to the first laser ranging unit (8) and the second laser ranging unit (11) respectively, and the signal output terminal of the control unit is electrically connected to the display unit.

2. The asphalt mixture Marshall specimen height measuring device according to claim 1, characterized in that: A horizontal detection bubble (7) is provided on the base (1).

3. The asphalt mixture Marshall specimen height measuring device according to claim 2, characterized in that: The number of horizontal detection bubbles (7) is two, located on both sides of the base (1).

4. The asphalt mixture Marshall specimen height measuring device according to claim 1, characterized in that: Adjustable foot bolts (6) are respectively provided at the four corners of the lower surface of the base (1).

5. The asphalt mixture Marshall specimen height measuring device according to claim 1, characterized in that: The first laser ranging unit (8) and the second laser ranging unit (11) include a probe fixing base (14), and a plurality of laser ranging probes (15) arranged at equal angles are provided on the inner side of the probe fixing base (14).

6. The asphalt mixture Marshall specimen height measuring device according to claim 5, characterized in that: The number of laser ranging probes (15) is four.

7. The asphalt mixture Marshall specimen height measuring device according to claim 1, characterized in that: The base (1) is rectangular in shape.

8. The asphalt mixture Marshall specimen height measuring device according to claim 5, characterized in that: The accuracy of the laser ranging probe (15) is 0.1 mm.

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