CN218157341U - High-low temperature drawing shear test device - Google Patents
High-low temperature drawing shear test device Download PDFInfo
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- CN218157341U CN218157341U CN202222002044.0U CN202222002044U CN218157341U CN 218157341 U CN218157341 U CN 218157341U CN 202222002044 U CN202222002044 U CN 202222002044U CN 218157341 U CN218157341 U CN 218157341U
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Abstract
A high-low temperature drawing and shearing test device belongs to the technical field of test instruments and comprises a test chamber, a test part and a temperature adjusting system, wherein the test part is arranged in a hollow chamber body of the test chamber; a guide rail of the testing part is arranged on the bottom platform, a lower testing mold is arranged on the guide rail through a sliding block, and a temperature sensor is arranged on the lower testing mold; a first pushing device is arranged on the supporting rod, and the cross rod is fixed on the first pushing device; a second pushing device and a pressure sensor are fixed on one side of the lower test mold; a height adjusting screw rod is arranged in the middle of the cross rod, and the tension sensor and the lower test die are arranged on the height adjusting screw rod. The device can accurately control the test temperature in the test cabin, and can realize the requirements of accurate test and analysis of the anti-pulling and anti-shearing effects of the cementing agent in different temperature environments.
Description
Technical Field
The utility model belongs to the technical field of test instrument, concretely relates to test cementitious material is resistance in different temperature environment draws and shear resistance's test device.
Background
The shearing force and the interlaminar drawing strength of the emulsified asphalt modified by SBR and the waterborne epoxy can be gradually reduced along with the rise of the temperature, so the shearing resistance and the drawing resistance of the emulsified asphalt interlaminar cementing agent under various temperature conditions need to be tested. The existing devices for testing the pull strength and the shear force are independent test devices respectively; in addition, in order to test the anti-pulling and anti-shearing effects of the cementing agent in different temperature environments, the test piece needs to be placed in a test device for detection after being heated in an oven or frozen in the oven for a period of time, and the temperature of the test piece is easy to change in the process, so that the test precision is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a high-low temperature drawing and shearing test device, which can integrate drawing and shearing test devices and can place drawing and shearing in a temperature-controllable test cabin to effectively realize accurate control of test temperature.
A high-low temperature drawing shear test device is characterized by comprising an experiment cabin, a test part and a temperature adjusting system; the experiment chamber consists of an experiment chamber shell and a hollow chamber body, the hollow chamber body is positioned in the experiment chamber shell, the test component is arranged in the hollow chamber body of the experiment chamber, and the temperature regulating system is arranged in the experiment chamber shell;
the test part comprises a bottom platform, a guide rail, a test die, a pressure sensor, a tension sensor, a temperature sensor, a cross bar, a support bar and a pushing device, wherein the test die is a square test die with a clamping device, the test die consists of an upper test die and a lower test die, the upper test die and the lower test die are consistent in shape and size and are arranged in a mirror symmetry manner, the guide rail is arranged on the front side and the rear side of the top surface of the bottom platform in parallel, a sliding block is arranged on the guide rail, the lower test die is horizontally fixed on the sliding block, the temperature sensor is arranged on the outer wall of the lower test die, and a probe of the temperature sensor can contact a cementing agent between the upper test die and the lower test die;
the supporting rods are arranged on the left side and the right side of the top surface of the bottom platform, the first pushing devices are vertically arranged on the tops of the supporting rods, the cross rods are horizontally fixed on the first pushing devices, through holes are formed in the middle of the cross rods, the height adjusting screw rods penetrate through the through holes in the cross rods, nuts are screwed into the height adjusting screw rods and are located above the cross rods, the tension sensors and the upper test molds are sequentially fixed at the bottom ends of the height adjusting rods, and the tension sensors are made to contact the upper test molds;
a second pushing device is horizontally fixed on one side of the top surface of the bottom platform, the second pushing device and the clamping device are located on different sides of the lower test mold, a pressure sensor is installed on the second pushing device and fixed on the side wall of the lower test mold, and the second pushing device, the pressure sensor and the lower test mold are located on the same axis.
The temperature adjusting system consists of a compressor, a fan, a ventilating duct and electric heating wires, wherein one end of the ventilating duct is communicated with the side edge of the hollow cabin body, the electric heating wires are arranged at the joint, the other end of the ventilating duct is connected with the bottom end of the hollow cabin body, and a filter screen is arranged at the joint; the bottom in the air pipe is provided with a fan, the pipe wall of the air pipe is provided with a plurality of holes, and the compressor is connected to the holes of the air pipe through an air outlet pipe and an air inlet pipe of the compressor.
The air outlet pipe of the compressor is higher than the air inlet pipe.
And a transparent cabin door is arranged on the outer side of the hollow cabin body of the experiment cabin.
The beneficial effects of the utility model reside in that: the pulling-resistant and shearing-resistant test equipment is integrated, so that the floor area of the test equipment is reduced; the temperature of the cementing agent measured by the temperature sensor controls the operation of the heating wire and the compressor in real time, so that the test temperature in the hollow cabin body is accurately controlled, and the accurate test of the anti-pulling and anti-shearing effects of the cementing agent in different temperature environments is realized.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a test part;
the test device comprises a test chamber 1, a hollow chamber 11, a test part 2, a bottom platform 21, a guide rail 22, a sliding block 23, an upper test mold 24, a lower test mold 25, a pressure sensor 26, a tension sensor 27, a cross bar 28, a support bar 29, a clamping device 210, a first pushing device 211, a second pushing device 212, a height adjusting screw 213, a temperature sensor 214, a temperature adjusting system 3, a compressor 31, a fan 32, a ventilation pipeline 33, an electric heating wire 34, a filter screen 35, an air outlet pipe 36 and an air inlet pipe 37.
Detailed Description
Example 1: a high-low temperature drawing shear test device is characterized by comprising an experiment cabin 1, a test part 2 and a temperature adjusting system 3; the experiment chamber 1 is composed of an experiment chamber shell and a hollow chamber body 11, the hollow chamber body 11 is positioned in the experiment chamber shell, the test component 2 is arranged in the hollow chamber body 11 of the experiment chamber, and the temperature adjusting system 3 is arranged in the experiment chamber 1 shell.
The test part 2 comprises a bottom platform 21, a guide rail 22, a test die, a pressure sensor 26, a tension sensor 27, a temperature sensor 214, a cross rod 28, a support rod 29 and a pushing device, wherein the test die is a square test die with a clamping device, the test die is composed of an upper test die 24 and a lower test die 25, the shapes and sizes of the upper test die and the lower test die are consistent and are arranged in a mirror symmetry mode, the guide rail 22 is arranged on the front side and the rear side of the top surface of the bottom platform 21 in parallel, a sliding block 23 is arranged on the guide rail 22, the lower test die 25 is horizontally fixed on the sliding block 23, the temperature sensor 214 is arranged on the outer wall of the lower test die 25, and a probe of the temperature sensor 214 can contact with a cementing agent between the upper test die and the lower test die.
The supporting rods 29 are arranged on the left side and the right side of the top surface of the bottom platform 21, the first pushing devices 211 are vertically arranged on the tops of the supporting rods 29, the cross rods 28 are horizontally fixed on the first pushing devices 211, through holes are formed in the middle of the cross rods 28, the height adjusting screw rods 213 penetrate through the through holes in the cross rods 28, nuts are screwed into the height adjusting screw rods 213 and are located on the cross rods 28, the tension sensors 27 and the upper test molds 24 are sequentially fixed at the bottom ends of the height adjusting screw rods 213, and the tension sensors 27 are enabled to contact the upper test molds 24.
A second pushing device 212 is horizontally fixed on one side of the top surface of the bottom platform 21, the second pushing device 212 and the clamping device 210 are located on different sides of the lower test mold, the pressure sensor 26 is mounted on the second pushing device 212, the pressure sensor 26 is fixed on the side wall of the lower test mold 25, and the second pushing device, the pressure sensor and the lower test mold 25 are located on the same axis.
After the test component 2 is installed, a transparent cabin door is installed on the outer side of the hollow cabin body 11 of the experiment cabin.
The temperature adjusting system 3 is composed of a compressor 31, a fan 32, a ventilation pipeline 33 and electric heating wires 34, wherein one end of the ventilation pipeline 33 is communicated with the side edge of the hollow cabin 11, the electric heating wires 34 are arranged at the joint, the other end of the ventilation pipeline 33 is connected with the bottom end of the hollow cabin 11, and a filter screen 35 is arranged at the joint; the fan 32 is arranged at the bottom in the ventilation pipeline 33, a plurality of holes are arranged on the pipe wall of the ventilation pipeline 33, the compressor 31 is connected to the holes of the ventilation pipeline through an air outlet pipe 36 and an air inlet pipe 37 of the compressor, and the air outlet pipe 36 is higher than the air inlet pipe 37.
The tension sensor 27 and the pressure sensor 26 are provided with miniature sensing digital display pressure gauges of Edgebau, which can display the measured tension value and pressure value in real time, and the temperature sensor 214 is provided with a combined H-X multi-path temperature tester, which can display the measured temperature value in real time.
When the device is used, a test piece to be tested is placed into the upper test die 24 and the lower test die 25, a cementing agent is coated between the test pieces, and the height adjusting screw rod 213 on the cross rod 28 is adjusted to enable the upper test die 24 to be close to the lower test die 25; then, the clamping devices 210 on the lower test mold 25 and the upper test mold 24 are adjusted respectively, so that the clamping devices 210 clamp the test pieces in the two test molds, the temperature sensor 214 is moved close to the cementing agent, and the temperature of the cementing agent is measured by the temperature sensor 214.
Closing the cabin door of the test cabin 1, measuring and displaying the temperature of the cementing agent by the temperature sensor 214, starting the compressor 31 and the fan 32 to operate when the temperature is set to be lower than the temperature measured by the temperature sensor 214, wherein low-temperature air flows to the cementing agent from an outlet above the ventilation pipeline 33 of the air outlet pipe 36 and enters an inlet below the ventilation pipeline 33 through a filter screen 35 at the lower part of the hollow cabin 11; when the temperature reaches the set temperature, the compressor 31 is turned off, and the fan 32 is operated at a reduced speed to keep the air inside the hollow cabin 11 ventilated. When the set temperature is higher than the temperature measured by the temperature sensor 214, the heating wire 34 and the fan 32 are started to operate simultaneously, and the hot air flows to the cementing agent from the upper outlet of the ventilation duct 33 and enters the lower inlet of the ventilation duct 33 through the lower filter screen 35 of the hollow cabin 11; when the temperature reaches the set temperature, the heating wires 34 are turned off, and the fan 32 is operated at a reduced speed to keep the air inside the hollow cabin 11 ventilated.
When the cementing agent fully reacts at the set temperature and reaches the expected binding force, the second pushing device 212 is started to extend to push the lower test die 25 to move on the guide rail 22, the shearing force of the cementing agent measured by the pressure sensor 26 is displayed in real time, and the measured final shearing force is displayed after the cementing agent is sheared and damaged. After testing, the second pusher 212 is returned to the origin.
The cementing agent fully reacts at a set temperature, after the expected binding power is reached, the first pushing device 211 is started to extend, the upper cross rod 28 drives the height adjusting screw rod 213 and the upper test die 24 to move upwards, the drawing force of the cementing agent measured by the tension sensor 27 is displayed in real time, and the final drawing force is displayed after the cementing agent is broken by drawing. After the test, the first pusher 211 is retracted to the origin.
Claims (4)
1. A high-low temperature drawing shear test device is characterized by comprising an experiment cabin, a test part and a temperature adjusting system; the experiment chamber consists of an experiment chamber shell and a hollow chamber body, the hollow chamber body is positioned in the experiment chamber shell, the test component is arranged in the hollow chamber body of the experiment chamber, and the temperature regulating system is arranged in the experiment chamber shell;
the testing component comprises a bottom platform, a guide rail, a testing mold, a pressure sensor, a tension sensor, a temperature sensor, a cross bar, a supporting bar and a pushing device, wherein the testing mold is a square testing mold with a clamping device, the testing mold consists of an upper testing mold and a lower testing mold, the upper testing mold and the lower testing mold are consistent in shape and size and are arranged in a mirror symmetry manner, the guide rail is arranged on the front side and the rear side of the top surface of the bottom platform in parallel, a sliding block is arranged on the guide rail, the lower testing mold is horizontally fixed on the sliding block, the temperature sensor is arranged on the outer wall of the lower testing mold, and a probe of the temperature sensor can contact a cementing agent between the upper testing mold and the lower testing mold;
the supporting rods are arranged on the left side and the right side of the top surface of the bottom platform, the first pushing devices are vertically arranged on the tops of the supporting rods, the cross rods are horizontally fixed on the first pushing devices, through holes are formed in the middle of the cross rods, the height adjusting screw rods penetrate through the through holes in the cross rods, nuts are screwed into the height adjusting screw rods and are located above the cross rods, the tension sensors and the upper test molds are sequentially fixed at the bottom ends of the height adjusting rods, and the tension sensors are made to contact the upper test molds;
a second pushing device is horizontally fixed on one side of the top surface of the bottom platform, the second pushing device and the clamping device are located on different sides of the lower test mold, a pressure sensor is installed on the second pushing device and fixed on the side wall of the lower test mold, and the second pushing device, the pressure sensor and the lower test mold are located on the same axis.
2. The high and low temperature drawing shear test device according to claim 1, wherein the temperature adjusting system is composed of a compressor, a fan, a ventilation duct and an electric heating wire, one end of the ventilation duct is communicated with the side edge of the hollow cabin body, the electric heating wire is installed at the joint, the other end of the ventilation duct is connected with the bottom end of the hollow cabin body, and a filter screen is installed at the joint; the bottom in the ventilation pipeline is provided with a fan, the pipe wall of the ventilation pipeline is provided with a plurality of holes, and the compressor is connected to the holes of the ventilation pipeline through an air outlet pipe and an air inlet pipe of the compressor.
3. The apparatus according to claim 2, wherein the outlet pipe of the compressor is located higher than the inlet pipe.
4. The high and low temperature drawing shear test device of claim 1, wherein a transparent hatch is installed outside the hollow body of the test chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002044.0U CN218157341U (en) | 2022-08-02 | 2022-08-02 | High-low temperature drawing shear test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002044.0U CN218157341U (en) | 2022-08-02 | 2022-08-02 | High-low temperature drawing shear test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218157341U true CN218157341U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222002044.0U Active CN218157341U (en) | 2022-08-02 | 2022-08-02 | High-low temperature drawing shear test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218157341U (en) |
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2022
- 2022-08-02 CN CN202222002044.0U patent/CN218157341U/en active Active
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