CN202676146U - A height measurer of a test piece - Google Patents

Abstract

The utility model discloses a test piece height measuring instrument. The height measuring instrument comprises a test platform, a circular column, a digital display height gauge, a ruler base, a depth measuring head and a digital display reading instrument. The test platform is placed horizontally, and the circular column Both the digital display height gauge and the ruler base are supported on the test platform, the digital display height gauge is set vertically, the lower end of the digital display height gauge is fixedly installed on the ruler base, the digital display readout instrument is set on the digital display height gauge, and can be digitally displayed The height gauge moves up and down on the guide rail, and a locking screw that can be tightened or loosened is installed on the side of the digital display readout instrument. The digital display readout instrument can display the corresponding position on the digital display height gauge. For the height value of the marked height reading, the digital display height gauge also has an outwardly extending arm, and the depth measuring head is fixedly installed on the end of the extending arm. The height measuring instrument has the advantages of simple structure, convenient operation, accurate result and high working efficiency, and can be applied to testing various test pieces.

Description

A test piece height measuring instrument

technical field

The utility model relates to a height measuring device, in particular to a test piece height measuring instrument, which can be used for measuring the height of various test pieces.

Background technique

Marshall test plays an important role in asphalt mixture design, and is one of the most widely used design methods. The asphalt mixture design method stipulated in the current code of our country is the Marshall design method. In the Marshall test, there are strict requirements on the height of the test piece, and the test piece exceeding the height range required by the specification should be discarded. It can be seen that the height of the test piece will directly affect the detection results of the Marshall test, and in the test process In the survey, it was found that the height measurement method introduced in the specification has shortcomings such as long measurement time and large cumulative error.

Utility model content

The purpose of the utility model is to provide a test piece height measuring instrument, the height measuring instrument is simple in structure, easy to operate, accurate in results, high in work efficiency, and can be applied to various test pieces.

The above object of the utility model is achieved through the following technical solutions: a test piece height measuring instrument, characterized in that: the height measuring instrument includes a test platform, a round column, a digital display height gauge, a ruler base, a depth measuring head and Digital display reading instrument, the test platform is placed horizontally, the circular column and the ruler base are supported on the test platform, the digital display height gauge is vertically installed, the lower end of the digital display height gauge is fixedly installed on the ruler base, and the digital display reading The instrument is set on the digital display height gauge, and can move up and down with the digital display height gauge as the guide rail. There is also a locking screw that can be tightened or loosened on the side of the digital display readout instrument. After the display readout reaches a certain height position, the digital display readout is locked on the digital display altimeter, and the digital display readout can display the height value of the altitude reading marked on the digital display altimeter corresponding to its position , the digital display height gauge also has an outwardly protruding arm, and the depth measuring head is fixedly installed on the end of the extending arm. The depth measuring head contacts the upper surface of the circular column and the The upper surface of the round column is in contact, and the two height values before and after are read by the digital readout device, and the difference between the two height values is the actual height of the test piece.

In the utility model, the test platform is an adjustable platform, the test platform is a square platform, there is a level bubble in the test platform, and three spiral feet are installed on the lower surface of the test platform, and the three spiral feet are distributed in an equilateral triangle. on the three vertices of .

In the utility model, the precision of the digital display reading instrument is 0.01 mm, and the height of the digital display height gauge is 300 mm.

Compared with the prior art, the utility model utilizes the digital display height gauge to be able to dispose of zero at will, reduces the number of test piece measurements, and improves the accuracy and efficiency of the test piece measurement.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Fig. 1 is the overall structure schematic diagram of the height measuring instrument of the present invention, at this moment, the depth measuring head directly contacts the round column;

Fig. 2 is the structural representation of test platform in the height measuring instrument of the present utility model;

Fig. 3 is the overall structure schematic diagram of another structure of the height measuring instrument of the present invention, at this moment, the depth measuring head is in contact with the test piece;

Fig. 4 is a schematic diagram of the overall structure of another structure of the height measuring instrument of the present invention, at this time, the depth measuring head is in contact with the test mold with a mold.

Explanation of reference signs

1. Digital display height ruler; 2. Ruler base; 3. Depth measuring head; 4. Fastening screw; 5. Digital display reading instrument; 6. Test platform; 7. Round column; 8. Limit screw; Foot; 10, level bubble; 11, test piece; 12, test mold with mold; 13, locking screw

Detailed ways

A test piece height measuring instrument as shown in Figures 1 to 4, the height measuring instrument includes a test platform 6, a circular column 7, a digital display height gauge 1, a ruler base 2, a depth measuring head 3 and a digital display reading instrument 5 , the test platform 6 is placed horizontally, the round column 7 and the ruler base 2 are supported on the test platform 6, the digital display height ruler 1 is vertically arranged, the lower end of the digital display height ruler 1 is fixedly installed on the ruler holder 2, and the digital display The reading instrument 5 is set on the digital display height gauge 1, and can move up and down with the digital display height gauge 1 as a guide rail, and a locking screw 13 that can be tightened or loosened is installed on the side of the digital display reading instrument 5, The locking screw 13 locks the digital display reading instrument 5 on the digital display height gauge 1 after the digital display reading instrument 5 reaches a certain height position, and the locking screw 13 can be loosened when the digital display reading instrument 5 needs to move up and down. The digital display reading instrument 5 can display the height value of the height reading indicated on the digital display altimeter 1 corresponding to its position, and the digital display altimeter 1 also has an outwardly protruding arm, and the depth measuring head 3 is fixedly installed on the end of the extension arm through the fastening screw 4, and the depth measuring head 3 is in contact with the upper surface of the circular column 7 and the upper surface of the circular column 7 after the test piece is placed, and reads through the digital display The instrument 5 reads two height values before and after, and the difference between the two height values is the actual height of the test piece 11 .

The test platform 6 is an adjustable platform. The test platform 6 is a square platform. There is a level bubble 10 inside the test platform 6. Three screw feet 9 are installed on the lower surface of the test platform 6. The three screw feet 9 are distributed in an equilateral triangle. On the three vertices of the test platform 6, the vial 10 is positioned in the center by adjusting the screw foot 9, so that the upper surface of the test platform 6 is level. Also be provided with limit screw 8 on the side of round column 7, altogether three, equally distributed, length is 10mm.

The precision of the digital display reading instrument 5 is 0.01mm, and the height of the digital display height gauge 1 is 300mm.

The utility model is used for Marshall test detection of asphalt mixture, as a Marshall test piece height measuring instrument, and the specific operation process is as follows, wherein the production process of the Marshall test piece is the prior art, and will not be described here.

1. Leveling

Adjust the screw foot 9 at the bottom of the test platform 6 so that the level bubble 10 is centered.

2. Measurement

(1) Measurement after compaction

Adjust the position of the digital display height gauge 1, so that the depth measuring head 3 just touches the surface of the round column 7, and the reading (can be set to 0), lift the digital display readout instrument 5, and place the test mold 12 with the mold on the round column 7, As shown in FIG. 4 , adjust the position of the depth measuring head 3 to read the height of the upper surface of the molded sample 12 , and the difference between the two heights is the height of the sample.

(2) Measurement after demoulding

Adjust the position of the digital display height gauge 1, so that the depth measuring head 3 just touches the surface of the round column 7, and the reading (can be set to 0), raise the digital display readout device 5, and place the demoulded sample 11 on the round column 7 As shown in Figure 3, the bottom surface of the sample 11 is just flush with the outer ends of the three limit screws 8 of the round column 7, and the position of the depth probe 3 is adjusted so that the measurement range of the depth probe 3 is controlled within the test range. The upper surface of the sample 11 is within 10mm from the edge, read the height of the upper surface of the sample 11, and the difference between the two heights is the height of the sample.

The height measuring instrument of the utility model can not only be used for Marshall test detection of asphalt mixture, but also can be used for height measurement of various test pieces, and the specific operation process is similar.

Claims (3)

1. height of specimen analyzer, it is characterized in that: this elevation measurement instrument comprises test platform (6), pillar type column (7), digital display height gauge (1), rod support (2), degree of depth gauge head (3) and digital display readout instrument (5), described test platform (6) horizontal positioned, the equal support of pillar type column (7) and rod support (2) is on this test platform (6), digital display height gauge (1) is vertical to be arranged, the lower end of digital display height gauge (1) is fixedly mounted on the rod support (2), digital display readout instrument (5) is enclosed within on the digital display height gauge (1), and can move up and down take digital display height gauge (1) as guided way, the side of digital display readout instrument (5) is also installed a lock-screw (13) that can screw or unscrew, this lock-screw (13) is locked in digital display readout instrument (5) on the digital display height gauge (1) after digital display readout instrument (5) arrives certain height and position, digital display readout instrument (5) can demonstrate the height value of the altitude reading that indicates on the digital display height gauge corresponding with its residing position (1), digital display height gauge (1) also has outwardly directed extension arm, and described degree of depth gauge head (3) is fixedly mounted on the termination of extension arm.

2. height of specimen analyzer according to claim 1, it is characterized in that: described test platform (6) is adjustable platform, this test platform (6) is square platform, has air level (10) in the test platform (6), the lower surface of test platform (6) also is equipped with three spiral pin (9), and three spiral pin (9) are distributed on three summits of an equilateral triangle.

3. height of specimen analyzer according to claim 1, it is characterized in that: the precision of described digital display readout instrument (5) is 0.01mm, the height of described digital display height gauge (1) is 300mm.

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