CN214668731U - Frass crisp point appearance - Google Patents
Frass crisp point appearance Download PDFInfo
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- CN214668731U CN214668731U CN202120399160.3U CN202120399160U CN214668731U CN 214668731 U CN214668731 U CN 214668731U CN 202120399160 U CN202120399160 U CN 202120399160U CN 214668731 U CN214668731 U CN 214668731U
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Abstract
The invention provides a Frass brittle point instrument which comprises a strain control device, a sound control testing device, a container base device and a temperature control device, wherein the strain control device and the sound control testing device are matched for use to provide a force for stretch bending a thin steel sheet moving at a constant speed, so that an asphalt sample on the thin steel sheet is uniformly bent and compressed, and the sound control testing device is used for measuring the temperature of the asphalt sample and the decibel value during brittle fracture to obtain more accurate asphalt brittle point temperature; initial temperature in the parallel test process is controlled through the container base device and the temperature control device, and temperature change occurring in the test process is regulated and controlled, so that test errors are reduced, and test accuracy is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of test instrument or equipment of test bituminous material characteristic, concretely relates to Frass crisp some appearance.
Background
The Fras brittleness point instrument is a test instrument for measuring Fras brittleness points of various asphalt materials, and is composed of a bending instrument, a thin steel sheet, a cooling device, a thermometer and other devices specified in the test specification of road engineering asphalt and asphalt mixture (JTG E20-2011).
However, the above-mentioned apparatus has the following disadvantages in the practical operation:
(1) during testing, the initial temperature inside the instrument is different, so that the error of the parallel test result is larger;
(2) the speed of manually rotating the crank handle is different, so that the fracture stress of the asphalt film is not uniform during the parallel test;
(3) when the test temperature is reduced to below zero, water mist appears on the surface of the test tube, and asphalt cracks are difficult to visually observe;
(4) when the asphalt film is bent by controlling the two ends of the bendable steel sheet to be compressed at a constant speed, the displacement of the weak position with the largest bending moment in the middle is not at a constant speed;
(5) the cooling device is difficult to realize stable temperature control after falling behind and is difficult to operate.
Therefore, it is necessary to redevelop the Frass crisp point instrument which is simple in operation and accurate in measurement result aiming at the defects of the existing standard.
SUMMERY OF THE UTILITY MODEL
To the technical defect that above-mentioned current frass fragile point appearance exists, the utility model provides a frass fragile point appearance uses this frass fragile point appearance to carry out the pitch fragile point when experimental, but the displacement of the fracture weak face of accurate control pitch sample to through acoustic control testing arrangement survey pitch fragile point, obtain accurate test result, improve the precision that pitch sample data detected.
In order to achieve the technical purpose, the utility model discloses a following technical scheme realizes:
a Frass crisp point instrument comprises a strain control device, a sound control testing device and a container base device;
the container base device comprises a test glass test tube and a glass base, the glass base is in a round tube shape, the top of the glass base is provided with an opening, the test glass test tube is placed in the glass base, and a test tube port is fixedly connected with the opening of the glass base through a fixing block; the strain control device comprises a strain controller, a fixed tube and a displacement rod, wherein the fixed tube is hollow and sealed at the top, a tube body of the fixed tube is arranged in a test glass test tube and is fixedly connected with the test glass test tube through a fixed block, one end of the displacement rod penetrates through the top wall of the fixed tube to be fixedly connected with the bottom of the strain controller, and the other end of the displacement rod is connected to the sound control test device; acoustic control testing arrangement includes steel sheet, a temperature decibel receiver and a temperature decibel sensing line, steel sheet fixed connection is in fixed bobbin base, and its one end swing joint who keeps away from strain controller towards test tube mouth one side and displacement rod, test glass test tube bottom is arranged in to a temperature decibel receiver, a temperature decibel sensing line one end is connected with a temperature decibel receiver, and the other end stretches out test glass test tube, with on the data transfer external equipment that a temperature decibel receiver received.
Compared with the Frass crisp point instrument in the prior art, the Frass crisp point instrument provided by the utility model adopts the sound control testing device and the strain control device, when the brittle point test is carried out on the asphalt, the strain control device is matched with the sound control testing device for use, the rotary strain controller rotates at a constant speed to drive the displacement rod to move at a constant speed, thereby the thin steel sheet is stretched and bent, the asphalt sample on the thin steel sheet is uniformly compressed and deformed, the displacement of the cracked weak surface of the asphalt sample is accurately controlled, the decibel peak value and the temperature of the crack of the weak surface of the asphalt sample are monitored by the temperature-decibel receiver, the brittle point temperature of the asphalt sample is obtained, the asphalt brittle point test is completed, the experimental result obtained by the proposal is more accurate, the error is small, the detection mode of traditional manual observation is changed, and the accuracy of the asphalt sample data detection by the instrument is greatly improved.
Further, container base device still includes water-bath heating glass test tube and coolant liquid glass test tube, and coolant liquid glass test tube and water-bath heating glass test tube are all installed in glass base, coolant liquid glass test tube cover is established outside test glass test tube, water-bath heating glass test tube cover is established outside coolant liquid glass test tube, and each test tube mouth passes through the fixed block with glass base and fixes. The cooling liquid glass test tube is sleeved outside the test glass test tube, the water bath heating glass test tube is sleeved outside the cooling liquid glass test tube, all test tubes are placed in the glass base, and all test tube ports are fixed together with the glass base through the fixing blocks to form a sleeve structure. And (3) pouring hot water into the water bath heating glass test tube, or pouring cooling liquid into the cooling liquid glass test tube to regulate and control the temperature in the test glass test tube.
Further, the crisp point instrument also comprises a temperature control device, wherein the temperature control device comprises a water bath heating device, a cooling liquid cooling device and a pipeline; the water bath heating device both ends are passed the fixed block through the pipeline and are connected with the relative both sides of water bath heating glass test tube, coolant liquid heat sink both ends are passed the fixed block through the pipeline and are connected with the relative both sides of coolant liquid glass test tube. Because water-bath heating glass test tube and coolant liquid cooling glass test tube are wrapping up the test glass test tube, hot water is injected into to water-bath heating glass test tube through the pipeline to water-bath heating device, and coolant liquid cooling controlling means injects the coolant liquid into to coolant liquid glass test tube through the pipeline, and the temperature of stable control test glass pipe makes the initial temperature of parallel experiment at every turn unanimous, avoids because of the different experimental error that leads to of initial temperature, improves experimental precision.
Further, the temperature control device further comprises a temperature regulation and control digital display device, the temperature regulation and control digital display device is installed on the water bath heating device, and the other end of the temperature one-decibel sensing line is connected to the temperature regulation and control digital display device. The temperature regulation and control digital display device can accurately master the environmental temperature of the test glass test tube and receive the information monitored by the temperature decibel receiver, thereby facilitating the development of subsequent tests and the regulation and control of temperature.
Further, the top of the fixed pipe is provided with a threaded hole, and the lower end of the strain gauge is provided with a thread matched with the threaded hole and is in threaded connection with the fixed pipe. The strain controller is connected with the fixed pipe through a spiral, and when the strain controller is rotated, the strain controller moves upwards at a constant speed to drive the displacement rod to move upwards at a constant speed, so that the phenomenon that stress is not uniform when an asphalt sample is fractured is avoided, the uniform compression at two ends of the thin steel sheet can be controlled, and the middle weak position with the maximum bending moment in the middle when an asphalt film is bent is displaced at a constant speed.
Further, the one end that strain controller was kept away from to the displacement pole is equipped with a couple, just the sheet steel is equipped with to the bellied ring of test tube mouth of pipe towards the central point of test tube mouth of sound one side, and the displacement pole passes through couple swing joint with the sheet steel. One end of the displacement rod is connected with the bottom of the strain controller, the other end of the displacement rod is connected with the thin steel sheet, when the strain controller is rotated to control the displacement rod to move upwards at a constant speed, the steel sheet is controlled to be stretched and deformed at a constant speed, so that an asphalt sample on the thin steel sheet is compressed and deformed at a constant speed, and in the process, a temperature-decibel receiver monitors the temperature of the asphalt sample and a decibel peak value generated when the asphalt sample is brittle-broken, so that a test result is obtained.
Furthermore, the sound control testing device also comprises a positioning steel sheet, wherein an outer ring of the positioning steel sheet is welded with the inner wall of the fixed pipe into a whole, the positioning steel sheet is fixed above the thin steel sheet, and the middle part of the positioning steel sheet is provided with a through hole matched with the diameter of the displacement rod. The positioning steel sheet has the function of limiting the stretch bending deformation degree of the thin steel sheet, the center of the positioning steel sheet is provided with a through hole, the displacement rod is allowed to pass through, the rotary strain control device drives the displacement rod to move upwards, the displacement rod simultaneously pulls the thin steel sheet, so that the thin steel sheet deforms, when the thin steel sheet is pulled to be in contact with the positioning steel sheet, the thin steel sheet is stretched and bent to a certain limit, and the rotary strain controller resets.
Preferably, a plurality of vertical threads are arranged on the outer wall of the strain controller. Set up vertical screw on strain controller outer wall, increase the frictional force of outer wall, make things convenient for operating personnel to exert force when twisting the fixed pipe of strain controller rotation.
Preferably, the fixing block is made of rubber. Rubber is rich in elasticity, and when glass base and each test tube mouth fix, the leakproofness is better, and is difficult for shifting.
Drawings
Fig. 1 is a front view of a frass crisp point instrument of the present invention;
fig. 2 is a schematic diagram of a strain control device in a frass crisp point meter according to the present invention.
Wherein, the attached drawings illustrate that 1-temperature regulation digital display device; 2-a water bath heating device; 3-cooling liquid cooling device; 4-heating the pipeline; 5-coolant line; 6-a strain controller; 7-rubber fixing blocks; 8-temperature one-to-one shell sensing line; 9-fixing the tube; 10-a displacement rod; 11-test glass test tubes; 12-a glass base; 13-heating the glass test tube in a water bath; 14-liquid cooling glass test tube; 15-positioning the steel sheet; 16-temperature one-shellfish receiver; 17-thin steel sheet.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings of the specification, but the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and the scope of the present invention is not limited thereto.
In order to solve the technical problems in the background art, the utility model provides a Frass crisp point instrument, as shown in figure 1, which comprises a temperature control device, a strain control device, a sound control testing device and a container base device;
container base device is including test glass test tube 11, and glass base 12, water-bath heating glass test tube 13 and coolant liquid glass test tube 14, glass base 12 is the pipe form, the bottom is sealed, the top is equipped with the opening, the cover is established outside test glass base 11 to coolant liquid glass test tube 14 cover, water-bath heating glass test tube 13 covers is established outside coolant liquid glass test tube 14, and place glass base 12 according to the preface, each test tube mouth passes through the fixed block and the fixed complete set tubular construction of glass base opening, through pouring into hot water toward water-bath heating glass test tube 13 and add the temperature of coolant liquid control test glass test tube toward coolant liquid glass test tube. In this embodiment, all the fixing blocks are fixed by the rubber fixing blocks 7.
Strain control device includes strain controller 6, fixed pipe 9 and displacement pole 10, fixed pipe 9 is placed in test glass pipe 11, and its outer pipe wall is fixed in test glass test tube 11's mouth of pipe department through rubber fixed block 7, and fixed pipe 9 top center is equipped with the screw hole, and screw hole fixed connection is passed in strain controller 6 bottom to displacement pole 10 one end, and the other end is equipped with the couple, be connected to in the acoustic control testing arrangement through the couple, and strain controller 6 lower part be equipped with fixed pipe 9's screw hole assorted screw thread, through rotatory strain controller, can make the displacement pole at the uniform velocity removal in fixed pipe.
Wherein, for the convenience of operating personnel exert force when turning round out fixed pipe 9 with strain controller 6, set up a plurality of vertical stripes on strain controller 6's outer wall, increase the frictional force of contact position to make things convenient for operating personnel to test.
The sound control testing device comprises a temperature one-decibel sensing line 8, a temperature one-decibel receiver 16, a positioning steel sheet 15 and a thin steel sheet 17 which is fully coated with an asphalt sample, wherein the outer side of the thin steel sheet 17 is fixedly connected to the bottom end of a fixed pipe 9, an upward convex circular ring is arranged at the central position of one surface facing to the mouth of a test tube, as shown in figure 2, the circular ring is connected with a hook at the bottom end of a displacement rod 10, the positioning steel sheet 15 is fixedly connected in the fixed pipe, the outer circumference of the positioning steel sheet is welded with the inner wall of the fixed pipe into a whole at a certain position above the thin steel sheet, and a through hole allowing the displacement rod to pass through is formed in the central position of the positioning steel sheet 15; the temperature one-decibel receiver 16 is placed at the bottom of the test glass test tube 11, one end of the temperature one-decibel sensing line 8 is connected to the temperature one-decibel receiver 16, and the other end of the temperature one-decibel sensing line extends out of the test glass test tube 11 and is connected to the temperature control device.
The temperature control device comprises a temperature regulation and control digital display device 1, a water bath heating device 2, a cooling liquid cooling device 3 and corresponding pipelines, wherein two ends of the water bath heating device 2 penetrate through two opposite sides of a rubber fixing block 7 and a water bath heating glass test tube 13 through heating pipelines 4 and are connected, and two ends of the cooling liquid cooling device 3 penetrate through two opposite sides of the rubber fixing block 7 and a cooling liquid glass test tube 14 through a cooling liquid pipeline 5 and are connected; the temperature regulation digital display device 1 is arranged on the water bath heating device 2, the temperature one-third decibel sensing line 8 is connected to the temperature regulation digital display device 1, and information received by the temperature one-third decibel receiver is transmitted to the temperature regulation digital display device 1 to be displayed.
The above components of the Frass crisp point instrument can be assembled by the following installation method:
firstly, a thin steel sheet 17 fully coated with an asphalt sample is arranged at the bottom end of a fixed pipe 9, and a strain controller 6 is rotated and moved downwards, so that a hook at the bottom of a displacement rod 10 is hooked on a ring of the thin steel sheet 17. Then put into test glass test tube 11 with fixed pipe 9, temperature one decibel receiver 16 and temperature one decibel sensing line 8, fixed pipe 9 passes through rubber fixed block 7 with test glass tube 11 and fixes, temperature one decibel receiver 16 and 8 one end overlap joints of temperature one decibel sensing line, the rubber fixed block 7 is worn out to the temperature one decibel sensing line 8 other end, put into coolant liquid glass test tube 14 and water bath heating glass test tube 13 together in proper order with fixed pipe 9 with test glass test tube 11, and with rubber fixed block 7 fixed test tube mouth respectively, form the bushing structure, put into glass base 12 with the bushing structure at last, fix into overall structure with rubber fixed block 7. Then, pass rubber fixed block 7 respectively through heating tube 4 and coolant liquid pipeline 5 with water bath heating device 2 and coolant liquid heat sink 3 and be connected to corresponding water bath heating glass test tube 13 and coolant liquid glass test tube 14, temperature regulation and control digital display device 1 installs on water bath heating device 2, and the temperature that will wear out one minute shell sensing line 8 is connected to temperature regulation and control digital display device 1 simultaneously, from this, forms complete Frass crisp some appearance.
Through the device, the utility model discloses can produce following technological effect:
on one hand, the invention adopts a strain control device and a sound control testing device, and provides a force of uniform motion for the thin steel sheet 17 through the spiral structure of the strain controller 6 and the fixed pipe 9, so as to drive the thin steel sheet 17 to be bent and deformed at a uniform speed, thereby enabling the asphalt sample on the thin steel sheet to be bent and compressed uniformly, being beneficial to controlling the bending path of the asphalt sample and reducing the test error caused by uneven stress in the test; on the other hand, the water bath heating device 2 and the cooling liquid cooling device 3 are additionally arranged, the internal temperature of the test glass test tube 11 is controlled through the water bath heating device 2 and the cooling liquid cooling device 3, the initial temperature of each parallel test is guaranteed to be consistent, the test error is reduced, and the test accuracy is improved.
The above description is only a partial example of the present invention, and does not limit the embodiments and the protection scope of the present invention, and those skilled in the art should be able to realize that all the equivalent alternatives and obvious variations made by the content of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A Frass crisp point instrument is characterized by comprising a strain control device, a sound control testing device and a container base device; the container base device comprises a test glass test tube and a glass base, the glass base is in a round tube shape, the top of the glass base is provided with an opening, the test glass test tube is placed in the glass base, and a test tube port is fixedly connected with the opening of the glass base through a fixing block; the strain control device comprises a strain controller, a fixed tube and a displacement rod, wherein the fixed tube is hollow and sealed at the top, a tube body of the fixed tube is arranged in a test glass test tube and is fixedly connected with the test glass test tube through a fixed block, the lower end of the strain controller is movably connected with the top of the fixed tube, one end of the displacement rod penetrates through the top wall of the fixed tube and is fixedly connected with the bottom of the strain controller, and the other end of the displacement rod is connected to the sound control test device; acoustic control testing arrangement includes steel sheet, a temperature decibel receiver and a temperature decibel sensing line, steel sheet fixed connection is in fixed bobbin base, and its one end swing joint who keeps away from strain controller towards test tube mouth one side and displacement rod, test glass test tube bottom is arranged in to a temperature decibel receiver, a temperature decibel sensing line one end is connected with a temperature decibel receiver, and the other end stretches out test glass test tube, with on the data transfer external equipment that a temperature decibel receiver received.
2. The Frass crisp point instrument of claim 1, wherein the container base unit further comprises a water-bath heating glass test tube and a cooling liquid glass test tube, the cooling liquid glass test tube is sleeved outside the test glass test tube, the water-bath heating glass test tube is sleeved outside the cooling liquid glass test tube, and each test tube opening is fixed to the glass base through a fixing block.
3. The France crisp point instrument of claim 2, further comprising a temperature control device, wherein the temperature control device comprises a water bath heating device, a cooling liquid cooling device and a pipeline; the water bath heating device both ends are passed the fixed block through the pipeline and are connected with the relative both sides of water bath heating glass test tube, coolant liquid heat sink both ends are passed the fixed block through the pipeline and are connected with the relative both sides of coolant liquid glass test tube.
4. The France crisp point instrument according to claim 3, wherein the temperature control device further comprises a temperature control digital display device, the temperature control digital display device is installed on the water bath heating device, and the other end of the temperature one-decibel sensing line is connected to the temperature control digital display device.
5. The France crisp point instrument of claim 1, wherein the top of the fixed tube is provided with a threaded hole, and the lower end of the strain controller is provided with a thread matched with the threaded hole and is in threaded connection with the fixed tube.
6. The France crisp point instrument according to claim 1, wherein a hook is arranged at one end of the displacement rod, which is far away from the strain controller, a circular ring protruding towards the test tube opening is arranged at the center of one surface of the thin steel sheet, which faces the test tube opening, and the displacement rod and the thin steel sheet are suspended at the circular ring through the hook and are movably connected.
7. The France crisp point instrument according to claim 1, wherein the sound control testing device further comprises a positioning steel sheet, an outer ring of the positioning steel sheet is welded with the inner wall of the fixed pipe into a whole, the positioning steel sheet is fixed above the thin steel sheet, and a through hole matched with the diameter of the displacement rod is formed in the middle of the positioning steel sheet.
8. The fraysimeter according to claim 1, wherein the strain controller has a plurality of vertical threads on the outer wall.
9. The France crisp point instrument of claim 1, wherein the fixed block is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120399160.3U CN214668731U (en) | 2021-02-23 | 2021-02-23 | Frass crisp point appearance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120399160.3U CN214668731U (en) | 2021-02-23 | 2021-02-23 | Frass crisp point appearance |
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| CN214668731U true CN214668731U (en) | 2021-11-09 |
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| CN202120399160.3U Active CN214668731U (en) | 2021-02-23 | 2021-02-23 | Frass crisp point appearance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798639A (en) * | 2021-02-23 | 2021-05-14 | 广州港湾工程质量检测有限公司 | Frass brittle point instrument and test method thereof |
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2021
- 2021-02-23 CN CN202120399160.3U patent/CN214668731U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798639A (en) * | 2021-02-23 | 2021-05-14 | 广州港湾工程质量检测有限公司 | Frass brittle point instrument and test method thereof |
| CN112798639B (en) * | 2021-02-23 | 2024-07-05 | 广州港湾工程质量检测有限公司 | Fllas brittle point instrument and test method thereof |
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