CN210242652U - Marshall test piece thickness measurement chi - Google Patents
Marshall test piece thickness measurement chi Download PDFInfo
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- CN210242652U CN210242652U CN201921314514.9U CN201921314514U CN210242652U CN 210242652 U CN210242652 U CN 210242652U CN 201921314514 U CN201921314514 U CN 201921314514U CN 210242652 U CN210242652 U CN 210242652U
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Abstract
The utility model discloses a marshall test piece thickness measurement chi belongs to measuring instrument technical field. The utility model provides a marshall test piece thickness measurement chi, includes the main scale, locates the depth gauge on the main scale and locate the vernier scale on the main scale and have the digital display screen, be equipped with two internal diameter survey feet and two external diameter survey feet on the main scale, characterized by: the two inner core pin measuring rods are oppositely arranged and coaxial, and are perpendicular to the outer diameter measuring pins. The utility model discloses simple structure, easy operation is convenient, can realize that one carries out the precision measurement to the thickness of the marshall test piece that does not take off the mould, and measurement accuracy is high, and work efficiency is high, has very high practicality.
Description
Technical Field
The utility model relates to a dipperstick, in particular to marshall test piece thickness measurement chi belongs to measuring instrument technical field.
Background
The design method specified in the current technical Specification for constructing asphalt road surfaces for highways (JTG F40-2004) in China is the Marshall design method. The importance of the standard marshall test piece to the engineering of the road is self evident.
After the test piece is punched out, the thickness of the Marshall test piece which is not demoulded is measured to determine whether the thickness of the Marshall test piece meets the standard requirement, if the thickness does not meet the requirement, the use amount of the asphalt mixture is required to be adjusted to adjust the thickness of the Marshall test piece until the standard requirement is met.
The height of the small Marshall test piece die is about 87.5mm, and the height of the standard small Marshall test piece die is 63.5 +/-1.3 mm; the height of the large Marshall specimen die is about 115.5mm, and the height of the standard large Marshall specimen is 95.3 +/-2.5 mm. The freshly formed marshall test piece was present in the form of a core in the test piece mold, with both the top and bottom surfaces within the top and bottom cross-sections of the mold, and its thickness could not be directly measured with a vernier caliper. Generally, when measuring an unmolded marshall test piece, regular cylindrical cushion blocks are respectively arranged on the upper surface and the lower surface of the test piece, the total thickness of the test piece and the cushion blocks is measured, and the thickness value of the test piece is obtained by subtracting the thickness of the cushion blocks from the total thickness. The measurement process needs two people to be done with a concerted effort, and one person pads the cushion on the upper and lower surface of marshall test piece, and another person carries out the measurement, and the comparison is extravagant the manpower, and measuring speed is slower, and the cushion also can cause certain measuring error.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides a measure convenient, can one carry out precision measurement's marshall test piece thickness dipperstick to the marshall test piece thickness that does not take off the mould.
The utility model discloses a realize through following technical scheme: the utility model provides a marshall test piece thickness measurement chi, includes the main scale, locates the depth gauge on the main scale and locate the vernier scale on the main scale and have the digital display screen, be equipped with two internal diameter survey feet and two external diameter survey feet on the main scale, characterized by: the two inner core pin measuring rods are oppositely arranged and coaxial, and are perpendicular to the outer diameter measuring pins.
Utilize the utility model discloses when carrying out marshall test piece thickness measurement, cross the mould border respectively with two inner core survey foot poles and with the upper and lower surface contact of the marshall test piece in the mould, the thickness numerical value that the through-digital display screen read is the thickness numerical value of marshall test piece promptly.
Further, because marshall test piece surface has certain structure degree of depth, is not the plane on local minim scope test piece surface, for guaranteeing measurement accuracy, two the tip of inner core survey foot pole is equipped with the same inner core survey foot of a size respectively and touches the face, two the inner core survey foot touch the face be parallel to each other and with the measurement contact surface of external diameter survey foot is parallel.
Furthermore, the two inner core foot-measuring contact surfaces are in a round cake shape.
Furthermore, in order to measure the thickness of Marshall test pieces with different specifications conveniently, the inner core pin measuring rod is detachably connected with the outer diameter pin measuring rod. The thickness of Marshall test pieces with different specifications can be measured by replacing the inner core pin measuring rods with different lengths.
Furthermore, the inner core pin measuring rod and the outer diameter pin measuring rod are connected together through threads.
Furthermore, a switch button and a zero clearing button are arranged on the digital display screen. Through the switch button and the zero clearing button arranged on the digital display screen, the vernier can clear data at any position.
The utility model has the advantages that: the utility model discloses simple structure, it is through setting up an inner core survey foot pole on two external diameter survey feet respectively, has realized promptly carrying out the precision measurement to the thickness of the marshall test piece that does not take off the mould, and utilizes the utility model discloses when measuring, only need single can measure fast, easy operation is convenient, has saved the manpower, has improved work efficiency, and utilizes the utility model discloses when measuring, because of need not set up the cushion again and measure, can eliminate because of setting up the measuring error that the cushion brought, consequently improved measurement accuracy greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, 1 is an inner diameter measuring pin, 2 is a digital display screen, 3 is a main scale, 4 is a depth scale, 5 and 6 are outer diameter measuring pins, 7 and 9 are inner core measuring pin rods, and 8 and 10 are inner core measuring pin contact surfaces.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawings, a marshall test piece thickness measuring scale is an improvement made on the basis of the existing common vernier caliper, and comprises a main scale 3, a depth gauge 4 arranged on the main scale 3 and a vernier scale arranged on the main scale 3 and provided with a digital display screen 2, wherein two inner diameter measuring feet 1 and two outer diameter measuring feet are arranged on the main scale 3: outer diameter survey foot 5 and outer diameter survey foot 6, wherein, one side fixedly connected with inner core survey foot pole 7 that outer diameter survey foot 5 is relative with outer diameter survey foot 6 to inner core survey foot pole 7 perpendicular to outer diameter survey foot 5, one side fixedly connected with inner core survey foot pole 9 that outer diameter survey foot 6 is relative with outer diameter survey foot 5, and inner core survey foot pole 9 perpendicular to outer diameter survey foot 6, inner core survey foot pole 7 and inner core survey foot pole 9 set up relatively and coaxial. The end part of the inner core foot measuring rod 7 is provided with a cake-shaped inner core foot measuring contact surface 8, the end part of the inner core foot measuring rod 9 is provided with a cake-shaped inner core foot measuring contact surface 10, the inner core foot measuring contact surface 8 and the inner core foot measuring contact surface 10 are the same in size and are parallel to each other, and the two inner core foot measuring contact surfaces are parallel to the measuring contact surfaces of the two outer diameter foot measuring contact surfaces.
In order to facilitate the thickness measurement of marshall test pieces with different specifications, in the embodiment, the detachable connection between the inner core pin rod and the outer diameter pin is preferably adopted. Preferably, the inner core pin measuring rod and the outer diameter pin measuring rod are connected together by threads.
In this embodiment, the digital display screen 2 is provided with a switch button and a clear button.
When the Marshall test piece thickness measurement is carried out by utilizing the utility model, the inner core pin measuring rod 7 and the inner core pin measuring rod 9 are respectively fixed on the outer diameter pin measuring 5 and the outer diameter pin measuring 6, the vernier scale is moved to ensure that the inner core pin measuring contact surface 8 is completely contacted with the inner core pin measuring contact surface 10, and the digital display screen 2 is reset; and sliding the vernier scale towards the high scale direction to enable the inner core pin measuring contact surface 8 and the inner core pin measuring contact surface 10 to cross the upper edge and the lower edge of the Marshall mold, sliding the vernier scale towards the low scale direction to enable the inner core pin measuring contact surface 8 and the inner core pin measuring contact surface 10 to clamp the upper surface and the lower surface of the Marshall test piece, and reading the thickness value through the digital display screen 2, namely the thickness value of the test piece.
The utility model discloses in, the inner core surveys the foot and is equipped with the model of different length, can change the inner core survey foot of different length according to actual conditions.
The utility model discloses simple structure, easy operation is convenient, can realize single, carry out the precision measurement to the thickness of the marshall test piece of not taking off the mould fast, and measurement accuracy is high, and work efficiency is high. The utility model discloses make the improvement on current slide caliper's basis, the outward appearance is reformed transform for a short time, and the practicality is strong.
The utility model discloses not only can measure the marshall test piece thickness of not taking off the mould, can also carry out the precision measurement to the thickness of the inner core such as have the border.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (6)
1. The utility model provides a marshall test piece thickness measurement chi, includes main scale (3), locates depth ruler (4) on main scale (3) and locates the vernier scale that has digital display screen (2) on main scale (3), be equipped with two internal diameter survey feet (1) and two external diameter survey feet, characterized by on main scale (3): the two inner core pin measuring rods are oppositely arranged and coaxial, and are perpendicular to the outer diameter measuring pins.
2. The marshall specimen thickness measurement scale of claim 1, wherein: the end parts of the two inner core pin measuring rods are respectively provided with an inner core pin measuring contact surface with the same size, and the two inner core pin measuring contact surfaces are parallel to each other and are parallel to the measuring contact surface of the outer diameter pin measuring rod.
3. The marshall specimen thickness measurement scale of claim 1, wherein: the two inner core foot-measuring contact surfaces are in a round cake shape.
4. The marshall specimen thickness measurement scale of claim 1 or 2 or 3, wherein: the inner core pin measuring rod is detachably connected with the outer diameter pin measuring rod.
5. The marshall specimen thickness measurement scale of claim 4, wherein: the inner core pin measuring rod and the outer diameter pin measuring rod are connected together through threads.
6. The marshall specimen thickness measurement scale of claim 1 or 2 or 3, wherein: and the digital display screen (2) is provided with a switch button and a zero clearing button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314514.9U CN210242652U (en) | 2019-08-14 | 2019-08-14 | Marshall test piece thickness measurement chi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921314514.9U CN210242652U (en) | 2019-08-14 | 2019-08-14 | Marshall test piece thickness measurement chi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210242652U true CN210242652U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921314514.9U Active CN210242652U (en) | 2019-08-14 | 2019-08-14 | Marshall test piece thickness measurement chi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210242652U (en) |
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2019
- 2019-08-14 CN CN201921314514.9U patent/CN210242652U/en active Active
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