CN218410972U

CN218410972U - Novel test piece detection device

Info

Publication number: CN218410972U
Application number: CN202222258070.XU
Authority: CN
Inventors: 孟凡泽; 李庚�; 贺兵雄; 蒋永丰; 邸抗; 张国河
Original assignee: Civil Aviation Airport Construction Engineering Co Ltd
Current assignee: Civil Aviation Airport Construction Engineering Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-01-31
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a novel test piece detects device, including control box, fixed weighing sensor who locates the control box top, fix the heat insulating board of locating the weighing sensor top through the bracing piece, through spacing groove joint on the heat insulating board at die block, first support, second support, column dipperstick, slidingtype measuring stick, electric putter of heat insulating board top. The utility model relates to a building engineering quality inspection technical field can reduce the operating procedure of marshall test piece stability experiment by a wide margin, improves experimental efficiency, and easy operation, cost are low, are favorable to using widely.

Description

Novel test piece detection device

Technical Field

The utility model relates to a building engineering quality inspection technical field, concretely relates to novel test piece detects device.

Background

The Marshall stability test of asphalt mixture introduced in the 'road engineering asphalt and asphalt mixture test procedure' JTG E20-2011 of China industry standard is a key step for determining the mix proportion and composition of the asphalt mixture, and the Marshall stability test is characterized in that the asphalt mixture is made into a cylindrical test piece, and then the stability and the flow value of the cylindrical test piece are measured on a stability instrument, so that the stability and the deformation resistance of the asphalt mixture at high temperature are represented. While the height of the cylindrical marshall test piece has a significant impact on the experimental results. The height of the Marshall test piece formed by the T0702 standard compaction method is in accordance with the requirement of 63.5 +/-1.3 mm, and the height of the large Marshall test piece is in accordance with the requirement of 95.3 +/-2.5 mm.

At present, the height measurement method of the Marshall test specimen is to measure the height of 10mm from the edge in 4 symmetrical directions of a cross by using a vernier caliper, the accurate value is 0.1mm, and the average value is taken as the height of the test specimen. If the height of the test piece does not meet the requirements of 63.5 +/-1.3 mm or 95.3 +/-2.5 mm or the height difference of the two sides is more than 2mm, the test piece is discarded. Measuring the height of the marshall test piece with a vernier caliper has the following disadvantages: (1) The specification requires that 4-direction values of cross symmetry are measured by a vernier caliper, and the manual measurement efficiency is low because the number of a group of Marshall test pieces is not less than 4. (2) When the vernier caliper reading is carried out, the reading size can be inaccurate due to the influence of the eye parallax of the experimenter, and the reading is accurate to 0.1 mm. (3) Because the vernier caliper needs to be adjusted before the height of the Marshall specimen is measured every time, the experimenter needs to adjust the vernier caliper in the whole process, the labor is wasted, and the operation is complicated.

Patent CN201920890842.7 is a high-efficient marshall test piece height measurement appearance, including laser range finding sensor, display, support mount, test bench and singlechip, wherein, hit real fashioned marshall test piece and place on the test bench, support the one end of mount and fix on the test bench, the laser range finding sensor is connected to the other end, laser range finding sensor places in and hits the top of real fashioned marshall test piece, simultaneously, laser range finding sensor electricity is connected the singlechip, singlechip electricity is connected the display. Although the patent document can measure the height of the test piece by the laser ranging sensor, the test piece has the defects of high manufacturing cost, complex structure, the requirement of rotating the marshall test piece during the test to measure the height values of 4 points and incapability of measuring the quality of the marshall test piece.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel test piece detects device, need rotate the Marshall test piece in the complex operation that exists among the purpose solution prior art, cost height, the structure is complicated, the test just can record the height value of 4 position, can not measure the problem of the quality of Marshall test piece.

In order to achieve the purpose, the technical scheme adopted by the novel device is as follows:

the utility model provides a novel test piece detection device, includes control box, the fixed weighing sensor who locates the control box top, through the fixed heat insulating board of locating the weighing sensor top of bracing piece, through spacing groove joint on the heat insulating board top die block, first support, second support, column dipperstick, slidingtype measuring stick, electric putter, the die block be used for bearing the weight of marshall's test piece, the bottom of first support and the top one side fixed connection of control box, the bottom of second support and the top upper surface one side fixed connection of first support, the top of column dipperstick and the interior top fixed connection of second support, bottom and the top of first support upper surface fixed connection, electric putter's fixed bottom surface that inlays the top lower surface of locating first support, electric putter's piston rod extends along vertical downwardly extending, the mounting panel that the tip fixed connection of piston rod has the level to set up, the slidingtype measuring stick have 4, 4 slidingtype measuring sticks are 90 degrees evenly distributed about the axis interval of piston rod, 4 slidingtype measuring sticks through the top of slidable mounting panel and first support, the electric connection of control box is equipped with the control box on the bottom of control box, electric putter and electric connection of control box, the control box that electric putter are equipped with the control box.

Preferably, the die block upper end be equipped with the indicating line that is used for marking the position is placed to the marshall test piece, the indicating line in coaxial be equipped with the precision marking line that is used for the mark marshall test piece diameter precision, the diameter of indicating line has corresponded the biggest external diameter of marshall test piece in the precision range, the diameter of precision marking line has corresponded the minimum external diameter of marshall test piece in the precision range.

Preferably, the mounting plate, the piston rod, the cylindrical measuring scale and the indicating line are coaxially arranged, and the bottom end of the sliding measuring scale is opposite to the position 10mm away from the inner side of the top edge of the Marshall specimen to be measured.

Preferably, the bottom end of the control box is provided with a tilt angle sensor, four corners of the bottom end of the control box are respectively provided with supporting legs with adjustable heights, and the tilt angle sensor is electrically connected with the controller through a wire.

Preferably, the top end of the sliding type measuring rod is provided with a horizontally arranged indicating plate, and the inner end surface of the indicating plate is in clearance fit with the outer surface of the columnar measuring scale.

Preferably, the rod wall of the sliding type measuring rod between the mounting plate and the top end of the first bracket is fixedly provided with an annular limiting plate.

Preferably, the cross-section of the columnar measuring scale is square, each side surface of the columnar measuring scale is provided with a scale mark, and each side surface is opposite to the 1 sliding type measuring rod.

Preferably, the first support include along vertical with control box top fixed connection's first riser, along the first horizontal plate of level locating first riser top, the second support include along vertical with first horizontal plate top fixed connection's second riser, locate the second horizontal plate on second riser top along the level.

This neotype beneficial effect does:

this novel operating procedure that can reduce marshall test piece stability experiment by a wide margin improves experimental efficiency, and after the diameter of marshall test piece accorded with the standard, only need press the electric putter start button on the control panel, along with electric putter's extension, can easily measure the height that obtains 4 positions in marshall test piece top, and then combine the quality of the marshall test piece of measurement gained, carry out simple calculation and can judge whether the marshall test piece accords with the regulation standard. This novel simple structure, low in cost, measurement of efficiency is high, easy and simple to handle, is suitable for and uses widely.

Description of the drawings:

FIG. 1 is a schematic side cross-sectional view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic bottom view of the mounting plate of the present invention;

fig. 4 is a schematic top view of the bottom mold;

1. a control box; 2. supporting legs with adjustable height; 3. a display; 4. a weighing sensor; 5. a support bar; 6. a heat insulation plate; 7. bottom die; 8. a marshall test piece; 9. a first vertical plate; 10. a first horizontal plate; 11. a second vertical plate; 12. a second horizontal plate; 13. a columnar measuring scale; 14. a sliding type measuring rod; 15. an indicator panel; 16. an electric push rod; 17. mounting a plate; 18. an annular limiting plate; 19. scale marks; 20. an indicator line; 21. and marking lines with precision.

The specific implementation mode is as follows:

the present invention is described in detail below with reference to the drawings, which are intended to illustrate preferred embodiments of the present invention and not to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only used for describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to be referred to must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention.

Example 1:

the utility model provides a novel test piece detection device, as shown in fig. 1-4, including control box 1, fixed weighing sensor 4 who locates the control box top, fixed heat insulating board 6 of locating the weighing sensor top through bracing piece 5, through spacing groove joint of heat insulating board 6 upper end at die block 7, first support, second support, column dipperstick 13, slidingtype measuring stick 14, electric putter 16 on heat insulating board 6 top, die block 7 be used for bearing marshall test piece 8, the bottom of first support and top one side fixed connection of control box 1, the bottom of second support and the top upper surface one side fixed connection of first support, the top of column dipperstick 13 and the interior top fixed connection of second support, the bottom is connected with the top upper surface fixed connection of first support, the fixed cylinder of electric putter 16 inlay the top lower surface of locating first support, electric putter 16's piston rod extends along vertical downwardly extending, the mounting panel 17 that the end fixed connection that has the level to set up at the piston rod, slidingtype measuring stick 14 have 4, 4 measuring sticks about the piston rod interval, the control box axis is equipped with the electric connection of control board that the slidable is equipped with the control box that the top of the bottom of sliding type load-carrying stick is connected with the control box, the electric control board that the bottom of sliding type is equipped with the electric connection of sliding type control box is equipped with the bottom of the control board that the electric control box, the electric connection of sliding type of the control board is equipped with the electric control board that the electric connection of sliding type.

In this embodiment, the heat shield 6 is used to prevent overheating of the electrical components in the weighing sensor and the control box, after the bottom end of the sliding measuring rod 14 abuts against the top end of the marshall test piece, the scale line on the outer surface of the cylindrical measuring scale corresponding to the upper end of the sliding measuring rod marks the height of the upper end of the sliding measuring rod, and the height of the marshall test piece at the measuring point is obtained by subtracting the overall height of the sliding measuring rod from the height. Note that the height of the scale marks on the columnar measuring scale is marked with respect to the upper surface of the bottom die 7, and that, in use, the bottom end of the marshall test piece abuts against the upper end of the bottom die 7, that is, the bottom end of the marshall test piece is marked with a height. The heights of the tips of the 4 sliding measuring bars are not necessarily consistent, and the average height of the marshall test piece can be obtained by averaging the height data of the 4 marshall tips. The mounting plate and the top end of the first support are provided with sliding holes which are used for sliding to penetrate through the sliding type measuring rod to form a guide hole of the sliding type measuring rod.

Example 2:

on the basis of embodiment 1, the present embodiment is improved as follows:

as shown in fig. 1, 2 and 4, an indication line 20 for marking the placing position of the marshall test piece is arranged at the upper end of the bottom die 7, an accuracy marking line 21 for marking the diameter accuracy of the marshall test piece is coaxially arranged in the indication line 20, the diameter of the indication line 20 corresponds to the maximum outer diameter of the marshall test piece within the accuracy range, and the diameter of the accuracy marking line 21 corresponds to the minimum outer diameter of the marshall test piece within the accuracy range. In use, if the actual diameter of the Marshall specimen is larger than the diameter of the indicating line or smaller than the diameter of the precision marking line, the specimen is directly abandoned, and if the actual diameter of the Marshall specimen is between the indicating line and the precision marking line, the diameter of the Marshall specimen is in accordance with the specified standard.

As shown in fig. 1, 2, 3 and 4, the mounting plate 17, the piston rod, the cylindrical measuring scale 13 and the indicating line are coaxially arranged, and the bottom end of the sliding measuring rod 14 is opposite to the inner side of 10mm of the top edge of the marshall test piece to be measured. In actual use, due to the dimension error of the Marshall test piece, a certain slight error (within an allowable range) exists in the relative position.

As shown in fig. 1 and 2, the bottom end of the control box is provided with a tilt angle sensor (not shown in the figures), four corners of the bottom end of the control box are respectively provided with a supporting leg 2 (in the prior art) with adjustable height, and the tilt angle sensor is electrically connected with the controller through a wire. The device is convenient to adjust to the level, and the measurement precision is improved.

As shown in fig. 1 and 2, a horizontally disposed indicator plate 15 is disposed at the top end of the sliding measuring rod 14, and an inner end surface of the indicator plate 15 is in clearance fit with an outer surface of the cylindrical measuring scale 13. The indicating plate is used for indicating height data on the scale marks.

As shown in fig. 1 and 2, an annular limiting plate 18 is fixed on the rod wall of the sliding measuring rod 14 between the mounting plate and the top end of the first bracket. The function of the annular limit plate 18 is: before the measurement is started, the electric push rod is contracted, the piston rod drives the mounting plate to ascend, the mounting plate props against the annular limiting plate and drives the sliding type measuring rod 14 to ascend, and therefore a space for placing a Marshall test piece is reserved below the mounting plate. After the Marshall test piece is placed, the electric push rod extends to drive the sliding type measuring rod 14 to move downwards, the bottom end of the sliding type measuring rod is enabled to abut against the top end of the Marshall test piece in sequence, abutting positions are just 4 crossed measuring positions, then a worker reads scale values corresponding to the indicating plates to perform simple calculation to obtain height data of the Marshall test piece, after judging whether the height data meet the standard or not, the quality of the Marshall test piece can be measured through relevant buttons of the control panel, and when the quality data are qualified, the Marshall test piece meets the specified standard.

As shown in fig. 2, the cross section of the cylindrical measuring scale is square, each side of the cylindrical measuring scale is provided with a scale mark, and each side is opposite to the 1 sliding measuring rod. A square cylindrical measuring scale is easier to read when reading the scale mark data.

As shown in fig. 1 and 2, the first support comprises a first vertical plate 9 fixedly connected with the top end of the control box along the longitudinal direction, and a first horizontal plate 10 arranged at the top end of the first vertical plate 9 along the horizontal direction, and the second support comprises a second vertical plate 11 fixedly connected with the top end of the first horizontal plate along the longitudinal direction, and a second horizontal plate 12 arranged at the top end of the second vertical plate 11 along the horizontal direction. In practical use, a reinforcing rib plate can be arranged at the internal corner of the first bracket and the second bracket to improve the stability of the structure.

Claims

1. The utility model provides a novel test piece detection device which characterized in that: the device comprises a control box, a weighing sensor fixedly arranged at the top end of the control box, a heat insulation plate fixedly arranged above the weighing sensor through a support rod, a bottom die clamped at the top end of the heat insulation plate through a limit groove at the upper end of the heat insulation plate, a first support, a second support, a columnar measuring scale, a sliding type measuring rod and an electric push rod;

the bottom die is used for bearing a Marshall test piece, the bottom end of the first support is fixedly connected with one side of the top end of the control box, the bottom end of the second support is fixedly connected with one side of the upper surface of the top end of the first support, the top end of the columnar measuring scale is fixedly connected with the inner top of the second support, and the bottom end of the columnar measuring scale is fixedly connected with the upper surface of the top end of the first support;

the cylinder barrel of the electric push rod is fixedly embedded on the lower surface of the top end of the first support, the piston rod of the electric push rod extends downwards along the longitudinal direction, the end part of the piston rod is fixedly connected with a horizontally arranged mounting plate, the number of the sliding type measuring rods is 4, the 4 sliding type measuring rods are uniformly distributed at intervals of 90 degrees relative to the axis of the piston rod, and the 4 sliding type measuring rods can penetrate through the mounting plate and the top end of the first support in a sliding manner along the longitudinal direction;

the bottom of slidingtype measuring stick and the top cooperation of bearing the marshall test piece on the die block use, the control box in be equipped with controller and the battery of mutual electric connection, electric putter, weighing sensor be connected with the controller electricity through the wire respectively, still be equipped with control panel and display at the surface of control box.

2. The novel test piece testing device according to claim 1, wherein: the bottom die upper end be equipped with the indicating line that is used for marking the position is placed to the marshall test piece, the indicating line in coaxial be equipped with the precision marking line that is used for sign marshall test piece diameter precision, the diameter of indicating line has corresponded the biggest external diameter of marshall test piece in the precision range, the diameter of precision marking line has corresponded the minimum external diameter of marshall test piece in the precision range.

3. A novel test piece testing device as claimed in claim 2, wherein: the mounting plate, the piston rod, the columnar measuring scale and the indicating line are coaxially arranged, and the bottom end of the sliding measuring scale is opposite to the 10mm position on the inner side of the top end edge of the Marshall test piece to be measured.

4. A novel test piece testing device, as claimed in claim 3, wherein: the bottom end of the control box is provided with a tilt angle sensor, four corners of the bottom end of the control box are respectively provided with supporting legs with adjustable heights, and the tilt angle sensor is electrically connected with the controller through a wire.

5. The novel test piece testing device according to claim 4, wherein: the top end of the sliding type measuring rod is provided with an indicating plate which is horizontally arranged, and the inner end surface of the indicating plate is in clearance fit with the outer surface of the columnar measuring scale.

6. The novel test piece testing device according to claim 5, wherein: and the sliding type measuring rod is fixedly provided with an annular limiting plate on the rod wall between the mounting plate and the top end of the first bracket.

7. The novel test piece testing device according to claim 6, wherein: the cross-section of column dipperstick be square, all be equipped with the scale mark in every side of column dipperstick, and every side all is relative with 1 slidingtype measuring stick.

8. The novel test piece testing device according to claim 7, wherein: the first support include along vertical with control box top fixed connection's first riser, locate the first horizontal plate on first riser top along the level, the second support include along vertical with first horizontal plate top fixed connection's second riser, locate the second horizontal plate on second riser top along the level.