CN215339274U - Tensile force measuring device for asphalt viscosity and toughness test - Google Patents
Tensile force measuring device for asphalt viscosity and toughness test Download PDFInfo
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- CN215339274U CN215339274U CN202121589304.8U CN202121589304U CN215339274U CN 215339274 U CN215339274 U CN 215339274U CN 202121589304 U CN202121589304 U CN 202121589304U CN 215339274 U CN215339274 U CN 215339274U
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Abstract
The utility model discloses a tensile force measuring device for asphalt toughness tests, which comprises a base, wherein a cross beam is fixed on the base through a stand column, a guide rail and a screw rod are arranged between the cross beam and the base, a lifting arm is arranged between the guide rail and the screw rod, one end of the lifting arm is connected with the guide rail through a lifting pulley, and the other end of the lifting arm is connected with the screw rod through a lifting assembly; the bottom of the base is provided with a force measuring sensor seat, the force measuring sensor is arranged in the force measuring sensor seat through a fixing bolt, the top of the force measuring sensor seat is connected with a sample container seat, and a sample container for containing a sample is placed on the sample container seat; the lifting arm is connected with a stretching assembly, and the stretching assembly is connected with a stretching metal hemisphere. The utility model effectively overcomes the defects of complex structure and easy fault generation of the traditional force measuring device. The design of the stretching force measuring device is more reasonable, the structure is simpler, the failure rate is effectively reduced, and the use reliability of the stretching force measuring device is improved.
Description
Technical Field
The utility model relates to a tensile force measuring device, in particular to a tensile force measuring device for an asphalt toughness test.
Background
The viscosity and toughness of the asphalt are an important index for detecting the modified asphalt in highway engineering. The asphalt toughness test is to measure the toughness and the toughness of the modified asphalt so as to evaluate the modification effect of the asphalt after being doped with the modifier.
According to the requirements of test standards, the asphalt toughness test is to calculate the toughness and toughness of the asphalt by adopting a metal hemisphere with specified specifications at a specified temperature, drawing force values between the metal hemisphere and the asphalt during high-speed drawing and a relation curve between the drawing force values and corresponding deformation (drawing length) in the drawing process according to a specified method and requirements.
FIG. 3 is a schematic diagram of a conventional asphalt visco-elastic tensile force measuring device. In fig. 3:
the upright posts A1 are arranged on the left and right, and form a force measuring frame together with the cross beam A3 and the base A10.
Guide rail a 2: fixed at the left end of a lifting arm A6, a lifting pulley A9 ascends and descends on the guide rail, the upper part of the lifting pulley A9 is fixed on a cross beam A3, and the bottom part of the lifting pulley A9 is fixed on a base A10.
Beam a 3: used for fixing the upright post A1, the guide rail A2, the screw A7 and the like.
The transmission lead A4 is a signal transmission lead of a load cell A17 in the form of a coil spring, is arranged in a telescopic bellows A5, and can be contracted or extended when the lifting arm A6 ascends or descends.
The telescopic bellows A5 is connected between the beam A3 and the lifting arm A6, and a coil spring-shaped signal transmission lead A4 of a load cell A17 is arranged in the telescopic bellows A5. The telescopic bellows A5 is extendable and retractable, when the load cell A17 is connected with the stretching component A16 and the lifting arm A6 is lowered to the initial position shown in FIG. 1, the telescopic bellows A5 is extended to the longest state; when the lifting arm A6 rises to the highest position, the telescopic leather chamber A5 is contracted to the shortest state. The distance from the starting position of the lifting arm A6 to the highest position is not less than 610 mm. The coil spring-like signal transmission conductor A4 is likewise telescoped within the telescoping lumen A5.
The lifting arm A6 is used as the lifting and lowering arm of the detection device during tensile force measurement test.
The screw A7 and the power transmission screw can rotate clockwise or anticlockwise to drive the lifting arm A6 to move up or down.
The lifting assembly A8 is fixed at the right end of the lifting arm and is coupled to the power transmission screw A7, and when the screw A7 rotates clockwise or anticlockwise, the lifting arm A6 is driven by the assembly to ascend or descend.
And the lifting pulley A9 is fixed at the left end of the lifting arm A6 and is driven by the lifting arm A6 to ascend or descend on the guide rail A2.
Base A10, the installation and working base of the detection device.
Sample holder a11, sample container a13 is placed, and the bottom overhang of sample container a13 is screwed into the recess of sample holder a 11.
Bolt a12 is secured to mount a11 on mount a 10.
Sample container a13, a container for holding sample a15, with its bottom protruding portion screwed into a recess in sample holder a 11.
The stretched metal hemisphere a14, which is a stretched metal hemisphere manufactured as required, is made of stainless steel.
Sample a15, pitch test sample.
The stretching assembly A16 is formed by fixing three strip-shaped metal pieces on the middle joint in a plane shape at an angle of 120 degrees between every two strip-shaped metal pieces by taking the middle joint of the assembly as a center, and a stretching force measurement test can be implemented after a stretching metal hemisphere A14 is installed.
The load cell a17, during the tensile test, detects the tensile force value between the tensile metal hemisphere a14 and the specimen a 15.
The asphalt toughness tensile force measuring device has certain defects:
1. because the force transducer is arranged above the stretching assembly, the signal transmission lead of the force transducer is completely reserved above the stretching assembly and needs to be arranged in a specially designed telescopic leather cavity in a spiral spring-shaped mode, and the whole structure is complex.
2. Because the force measuring sensor is arranged above the stretching assembly, the signal transmission lead which drives the leather cavity and the force measuring sensor in the shape of a spiral spring to rise and fall when the lifting arm rises and falls in each test is determined, the service life of the leather cavity can be influenced, and the leather cavity and the lead in the leather cavity are easy to break down.
Therefore, it is an urgent problem to be solved by those skilled in the art to develop a tensile force measuring device for asphalt toughness test.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tensile force measuring device for asphalt toughness and viscosity tests, aiming at solving the defects. The device can effectively solve the defects of complex structure and easy fault generation. The design of the stretching force measuring device is more reasonable, the structure is simpler, the failure rate is effectively reduced, and the use reliability of the stretching force measuring device is improved.
The above object of the present invention is achieved by the following technical means: a tensile force measuring device for asphalt toughness tests comprises a base, wherein a cross beam is fixed on the base through a stand column, a guide rail and a screw rod are arranged between the cross beam and the base, a lifting arm is arranged between the guide rail and the screw rod, one end of the lifting arm is connected with the guide rail through a lifting pulley, and the other end of the lifting arm is connected with the screw rod through a lifting assembly;
the bottom of the base is provided with a force sensor seat, the force sensor is arranged in the force sensor seat through a fixing bolt, the top of the force sensor is connected with a sample container seat, and a sample container for containing a sample is placed on the sample container seat;
the lifting arm is connected with a stretching assembly, and the stretching assembly is connected with a stretching metal hemisphere.
Furthermore, the stretching assembly comprises a middle joint and three strip-shaped metal pieces, the upper end of the middle joint needs to be fixed on the lifting arm, and the lower end of the middle joint is connected with a stretching metal hemisphere.
When the tension force measuring device works, a tension force measuring test can be implemented after the tension metal hemisphere is arranged. During testing, the lower spherical surface of the stretched metal hemisphere is immersed in the tested asphalt sample. The tensile values between the lower full sphere of the stretched metal hemisphere and the adhered asphalt specimen, which vary with the stretched length, from large to small were tested and represented in the form of a graph with the abscissa as the stretched length and the ordinate as the tensile value.
The assembly and the working principle of each part of the utility model are as follows:
the upright columns, the left and the right, form a force measuring frame together with the cross beam and the base.
Guide rail: fixed at the left end of the lifting arm, the lifting pulley moves up or down on the guide rail, the upper part of the lifting pulley is fixed on the cross beam, and the bottom of the lifting pulley is fixed on the bottom plate.
A beam: used for fixing upright posts, guide rails, screw rods and the like.
The lifting arm is used for lifting and descending during a tensile force measurement test.
The stretching assembly is formed by fixing three strip-shaped metal pieces at the middle joint in a plane shape at an angle of 120 degrees between every two strip-shaped metal pieces by taking the middle joint of the stretching assembly as a center. After the tensile metal hemisphere is installed, a tensile force measurement test can be carried out.
The stretched metal hemisphere, which is manufactured as required, is made of stainless steel.
The screw and the power transmission screw can rotate clockwise or anticlockwise to drive the lifting arm to move up or down.
The lifting component is fixed at the right end of the lifting arm and coupled on the power transmission screw rod, the screw rod rotates clockwise or anticlockwise, and the lifting arm is driven by the component to ascend or descend.
And the lifting pulley is fixed at the left end of the lifting arm and is driven by the lifting arm to ascend or descend on the guide rail.
Base, this detection device's installation and work base.
And the sample container seat is used for placing a sample container, and the outward protruding part at the bottom of the sample container is screwed in the groove of the sample container seat.
And the upper part of the force sensor is fixed with the sample container seat, and the lower part of the force sensor is fixed on the force sensor seat. And detecting the tension value between the stretched metal hemisphere and the sample during the tension test of the force sensor.
And the fixing bolt is used for fixing the force sensor on the force sensor seat.
And the force measuring sensor seat is fixed on the base and internally provided with a force measuring sensor.
Sample, pitch sample to be tested.
The sample container is used for placing a sample, and the protruding part at the bottom of the sample container is screwed in the groove of the sample container seat.
Compared with the prior art, the utility model has the advantages that:
1. reasonable in design, simple structure's advantage:
the force transducer is arranged at the lower part of the sample container, the connecting lead of the force transducer can be directly connected to the control circuit board in the case, a complicated telescopic leather chamber is not provided, a force transducer helical spring-shaped signal transmission lead is also not provided, and the force transducer has the advantages of reasonable design and simple structure.
2. The advantages of reliable use and long service life are as follows:
the force transducer is arranged at the lower part of the sample container, and the telescopic leather cavity and the force transducer helical spring-shaped signal transmission lead are not used, so that the telescopic leather cavity does not need to be stretched and shrunk once during each detection, the force transducer helical spring-shaped signal transmission lead does not need to be stretched and shrunk once, the problem that the devices are easy to fatigue and damage is solved, and the force transducer has the advantages of reliability in use and long service life.
3. The advantages of no increase of cost and high cost performance are as follows:
the utility model installs the force cell at the lower part of the sample container, cancels the telescopic leather chamber, changes the signal transmission lead of the force cell in the shape of a spiral spring into a common lead, improves the technical performance without increasing the cost, and has the advantage of high cost performance.
4. The instrument applying the utility model has the advantages of simple and beautiful appearance:
the force transducer is arranged at the lower part of the sample container, and the telescopic leather cavity and the force transducer helical spring-shaped signal transmission lead are not used, so that the device has the advantages of simple and attractive appearance.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Figure 2 is a schematic top view of the stretching assembly of the present invention.
FIG. 3 is a schematic diagram of a conventional asphalt toughness tensile force measuring device.
Fig. 4 is a schematic diagram of an application example of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a tensile force measuring device for asphalt toughness tests comprises a base 10, wherein a cross beam 3 is fixed on the base 10 through an upright post 1, a guide rail 2 and a screw 7 are installed between the cross beam 3 and the base 10, a lifting arm 4 is installed between the guide rail 2 and the screw 7, one end of the lifting arm 4 is connected with the guide rail 2 through a lifting pulley 9, and the other end of the lifting arm 4 is connected with the screw 7 through a lifting assembly 8;
a force measuring sensor seat 14 is arranged at the bottom of the base 10, a force measuring sensor 12 is installed in the force measuring sensor seat 14 through a fixing bolt 13, the top of the force measuring sensor 12 is connected with a sample container seat 11, and a sample container 16 for containing a sample 15 is placed on the sample container seat 11;
the lifting arm 4 is connected with a stretching assembly 5, and the stretching assembly 5 is connected with a stretching metal hemisphere 6.
Further, the stretching assembly 5 comprises a middle joint 501 and three strip-shaped metal pieces 502, the upper end of the middle joint 501 needs to be fixed on the lifting arm 4, and the lower end of the middle joint 501 is connected with a stretching metal hemisphere 6.
When the tension force measuring device works, a tension force measuring test can be implemented after the tension metal hemisphere 6 is installed. During testing, the lower spherical surface of the stretched metal hemisphere 6 is immersed in the asphalt sample 15 to be tested. The tensile values between the entire lower spherical surface of the stretched metal hemisphere 6 and the adhered asphalt specimen 15, which vary with the stretching length, from large to small were measured and expressed in the form of a graph with the abscissa as the stretching length and the ordinate as the tensile value.
The assembly and the working principle of each part of the utility model are as follows:
the upright posts 1, the left and the right, form a force measuring frame together with the cross beam 3 and the base 10.
The guide rail 2: fixed to the left end of the lifting arm 4, on which a lifting pulley 9 is moved up and down, the upper part of which is fixed to the cross beam 3 and the bottom part of which is fixed to the base 10.
The beam 3: used for fixing the upright post 1, the guide rail 2, the screw 7 and the like.
And the lifting arm 4 is a lifting arm and a descending arm when the device is used for a tensile force measurement test.
And the stretching assembly 5 is formed by fixing three strip-shaped metal pieces on the middle joint in a plane shape at an angle of 120 degrees between every two strip-shaped metal pieces by taking the middle joint of the stretching assembly as a center. After the tensile metal hemisphere 6 is installed, a tensile force measurement test can be performed.
The stretched metal hemisphere 6, which is manufactured as required, is made of stainless steel.
The screw 7 and the power transmission screw can rotate clockwise or anticlockwise to drive the lifting arm 4 to move up or down.
And the lifting component 8 is fixed at the right end of the lifting arm and coupled on the power transmission screw 7, the screw 7 rotates clockwise or anticlockwise, and the component drives the lifting arm 4 to ascend or descend.
And the lifting pulley 9 is fixed at the left end of the lifting arm 4 and is driven by the lifting arm 4 to ascend or descend on the guide rail 2.
The base 10, the installation and working base of the detection device.
And a sample container seat 11 for placing a sample container 16, wherein the bottom outwards-protruding part of the sample container 16 is screwed in the groove of the sample container seat 11.
The load cell 12 is fixed to the sample container holder 11 at its upper portion and to the load cell holder 14 at its lower portion. The load cell 12 detects the amount of tension between the stretched metal hemisphere 6 and the test specimen 15 during the tensile test.
The fixing bolt 13 fixes the load cell 12 to the load cell holder 14.
And the load cell seat 14 is fixed on the base 10 and internally provided with the load cell 12.
The sample container 16 is a container for placing the sample 15, and the bottom protruding part of the sample container is screwed in the groove of the sample container seat 11.
An example of the application of the present invention is shown in fig. 4. The test method of the instrument is in accordance with T0624 plus 2011 asphalt toughness test of JTG E20-2011 road engineering asphalt and asphalt mixture test regulation of the national people's republic of China and a petrochemical industry standard SH/T0735 plus 2003 asphalt toughness test method.
In fig. 4:
the rail cover B1 is provided with a column and a rail inside.
The beam cover B2 houses the beam.
And a lift arm B3 for performing an ascending or descending operation in the tensile test.
A lifting arm joint B4, and a lower extension buffer spring B5.
The stretching buffer spring B5 has a buffer function on stretching when stretching is started, and the upper end of the upper lifting arm joint B4 and the upper end of the lower stretching assembly B11 are connected.
The screw cover B6 is provided with a column and a screw therein.
The control panel B7, for the purpose of the utility model, mainly completes the work of force measurement display zero clearing, stretching starting, stretching pause, stretching ending, test data and graph real-time display, detection result display and the like.
A worktable B8, a worktable of the instrument, an installation instrument frame, a stretching force measuring device and the like.
And a sample container seat B9 for placing a sample container, wherein the bottom protruding part of the sample container is screwed in the groove of the sample container seat B9.
The case B10, the mechanical and electrical control case of the instrument, is internally provided with a tension force transducer, a lifting arm ascending and descending screw rod rotation driving motor, an electrical control circuit board and the like.
The stretching component B11 is formed by fixing three strip-shaped metal pieces on the middle joint in a plane shape at an angle of 120 degrees between every two strip-shaped metal pieces by taking the middle joint of the component as a center. After the tensile metal hemisphere is installed, a tensile force measurement test can be carried out.
The sample container B12 is provided with a sample, and the bottom protruding part of the sample container B12 is screwed in the groove of the sample container seat B9.
Foot B13, four adjustable feet for the present instrument, is used to adjust the level of the instrument.
The working process of this example is as follows:
1. the instrument is placed on a firm, flat ground and foot B13 is adjusted so that the instrument countertop B8 is substantially horizontal.
2. And connecting the working power supply of the instrument as required.
3. The sample was placed in sample container B12 as required for the test and screwed into the recess in sample holder B9.
4. The elongated metal hemisphere, the elongated member B11, was installed as required for the test, and the elongated member B11 was attached to the lower end of the elongated buffer spring B5, and the upper end of the buffer spring 5 was attached to the lift arm joint B4.
5. In the control panel B7, the working power supply is started, the zero clearing key of the force measuring sensor is pressed, and the force measuring value is cleared.
6. The test key is turned on, the instrument starts a tensile test, the lifting arm B3 rises at a specified speed, and the control panel B7 displays a curve graph with the abscissa as the deformation amount (tensile length) and the ordinate as the tensile value in real time. When the stretching length reaches the maximum value (generally 610mm), the stretching is automatically stopped, and the control panel B7 displays the detection result.
7. The working process completes the viscosity and toughness test and detection of the tested sample.
The present example satisfies the asphalt toughness test and detection requirements of the tensile force measuring device of the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. The utility model provides a tensile measuring force device of pitch toughness test which characterized in that: the lifting device comprises a base, wherein a cross beam is fixed on the base through an upright post, a guide rail and a screw rod are arranged between the cross beam and the base, a lifting arm is arranged between the guide rail and the screw rod, one end of the lifting arm is connected with the guide rail through a lifting pulley, and the other end of the lifting arm is connected with the screw rod through a lifting assembly;
the bottom of the base is provided with a force measuring sensor seat, the force measuring sensor is arranged in the force measuring sensor seat through a fixing bolt, the top of the force measuring sensor seat is connected with a sample container seat, and a sample container for containing a sample is placed on the sample container seat;
the lifting arm is connected with a stretching assembly, and the stretching assembly is connected with a stretching metal hemisphere.
2. The tensile force measuring device for the asphalt toughness test according to claim 1, wherein: the stretching assembly comprises a middle joint and three strip-shaped metal pieces, the upper end of the middle joint needs to be fixed on the lifting arm, and the lower end of the middle joint is connected with a stretching metal hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589304.8U CN215339274U (en) | 2021-07-13 | 2021-07-13 | Tensile force measuring device for asphalt viscosity and toughness test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589304.8U CN215339274U (en) | 2021-07-13 | 2021-07-13 | Tensile force measuring device for asphalt viscosity and toughness test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215339274U true CN215339274U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121589304.8U Active CN215339274U (en) | 2021-07-13 | 2021-07-13 | Tensile force measuring device for asphalt viscosity and toughness test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215339274U (en) |
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2021
- 2021-07-13 CN CN202121589304.8U patent/CN215339274U/en active Active
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