CN113281373A - Electric lifting mechanism of thermal deformation and Vicat softening point temperature measuring instrument - Google Patents
Electric lifting mechanism of thermal deformation and Vicat softening point temperature measuring instrument Download PDFInfo
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- CN113281373A CN113281373A CN202110682225.XA CN202110682225A CN113281373A CN 113281373 A CN113281373 A CN 113281373A CN 202110682225 A CN202110682225 A CN 202110682225A CN 113281373 A CN113281373 A CN 113281373A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses an electric lifting mechanism of a thermal deformation and Vicat softening point temperature tester, belonging to the technical field of testers. The weight frame lifting rod and the test frame lifting pipe are respectively connected with the weight frame and the test frame. The invention realizes two test operation processes continuously in two steps through one electric lifting cylinder. The invention realizes two test operation processes through one electric lifting cylinder. The process is reasonable, the action is stable, the mechanism is simplified, and two tasks of lifting the sample rack and the weight rack are completed by one set of mechanism. The problem of the frequent loading of manual work and the uninstallation dozens of kilograms of counter weight is solved, very big reduction operator's intensity of labour, improved work efficiency, cooperation electrical control system can realize the test process automatic control, has improved the automation level of instrument.
Description
Technical Field
The invention belongs to the technical field of testers, and particularly relates to an electric lifting mechanism of a thermal deformation and Vicat softening point temperature tester.
Background
The thermal deformation and Vicat softening point temperature measuring instrument is mainly used for measuring the thermal deformation temperature and the Vicat softening point temperature of non-metal materials such as plastics, rubber, nylon, electric insulating materials and the like, and one instrument can be used for two tests. Is a common testing instrument in the production process of various non-metallic materials.
The thermal deformation temperature of various materials refers to the temperature value when a standard sample bears a constant load of three-point bending to generate a certain bending stress and reaches standard deflection corresponding to a specified bending strain increment under the condition of constant temperature rise.
The Vicat softening point temperature of each material is the corresponding temperature of a standard sample when the sample is heated at a constant speed and the standard pressing needle penetrates into the surface of the sample by 1.0mm under a certain load condition.
Both tests are carried out in constant-temperature oil bath liquid, and both need to control the temperature, the heating rate, load weights with certain mass, measure the displacement value and the like.
In the test, the weight of the loading weight is heavier, when the Vicat softening point temperature is measured, 5.0kg of weight needs to be loaded on each frame, 15kg of weight of the three-adding machine type weight and 30kg of weight of the six-adding machine type weight are needed, in the test process, the weight needs to be frequently loaded and unloaded, and the weight loading and unloading requirements are fast and accurate.
In the test process, the weights are manually loaded and unloaded, on one hand, labor intensity is high, on the other hand, the weights cannot be quickly and accurately loaded and unloaded, and the loaded mass is sensitive to the test result, so that a result error generated by test operation can occur.
Disclosure of Invention
The invention aims to provide an electric lifting mechanism of a thermal deformation and Vicat softening point temperature measuring instrument, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an electric lifting mechanism of a thermal deformation and Vicat softening point temperature tester comprises a vertical box body, wherein an electric lifting cylinder is fixed in the middle of the bottom surface of the vertical box body, the top of the electric lifting cylinder is connected with a lifting cross beam, two ends of the lifting cross beam are connected with weight frame lifting rods, the top ends of the weight frame lifting rods are connected with weight frame lifting support plates, a plurality of groups of loading weights are placed on the weight frame lifting support plates, a sliding sample frame lifting pipe is sleeved outside the weight frame lifting rods, the sample frame lifting pipe is guided by lifting pipe guide sleeves on two sides, and the lifting pipe guide sleeves are fixed on the box body; the test stand lifting connecting plate and the test stand lifting supporting plate are connected to the top end of the sample stand lifting pipe, a plurality of groups of test stands are placed on the test stand lifting supporting plate, test samples are placed at the bottom of each test stand, the test samples are loaded by loading weights through standard pressure heads, the lower half portion of each test stand and the test samples are located in a high-temperature oil bath of a constant-temperature oil tank, the test samples are deformed through loading of the upper balance weights in a constant-temperature oil medium, the test samples are subjected to deformation determination at a certain temperature and under a certain pressure, high-temperature medium oil is filled in the constant-temperature oil tank, an electric heater is fixedly installed inside the constant-temperature oil tank, the test deformation is measured by a measuring dial indicator, and casters are installed at the bottom of the box.
Preferably, an electric lifting cylinder is fixed in the middle of the bottom surface of the box body.
Preferably, the middle of the lower part of the lifting beam is connected with an electric lifting cylinder, and two ends of the top of the lifting beam are connected with a weight rack lifting rod.
Preferably, the sample frame lifting pipe is sleeved outside the weight frame lifting rod, and the weight frame lifting rod is in precise sealing movable fit with the sample frame lifting pipe.
Preferably, the height difference between the weight holder lifting rod and the sample holder lifting pipe of the outer sleeve is H1.
Preferably, the front end of the front face of the lifting supporting plate of the weight frame is provided with a plurality of U-shaped openings matched with the counterweight weight group.
Preferably, the electric lift cylinder is driven by a direct current motor.
Compared with the prior art, the invention has the beneficial effects that:
1. the device provided by the invention has the characteristics of improving the stability and accuracy of the test by mutually matching the components such as the electric lifting cylinder, the lifting beam, the weight frame lifting rod, the weight frame lifting support plate, the weight loading group, the sample frame lifting pipe, the lifting pipe guide sleeve, the test frame lifting connecting plate, the test frame lifting support plate, the test frame, the test sample, the constant-temperature oil tank and the like. The problem of because the operation of manual loading weight produces great test error is solved. The test precision of the thermal deformation and Vicat softening point temperature measurement test is increased. The stability and the accuracy of the test are improved.
2. Two experimental operating procedures were achieved with one electric lift cylinder. The process is reasonable, the action is stable, and the mechanism is simplified. The core of the mechanism is that the weight frame lifting rod and the test frame lifting pipe are shaft sleeve sliding parts, the inner rod shaft and the outer pipe are sleeved with a height difference H1, the height difference enables the action of the electric lifting cylinder to be divided into two steps, and the loading and unloading of weight loads are reasonably realized. The complex operation process is realized by a simple mechanism. Two tasks of lifting the sample rack and the weight rack are completed by one set of mechanism.
3. The invention replaces manual loading with electric loading, thus greatly reducing the labor intensity of operators. In the test process, the original instrument needs to frequently load and unload dozens of kilograms of counterweight weights, so that the operation intensity is high, and time and labor are wasted. After the loading is changed into a mechanical mode, the time and the labor are saved, the labor intensity is reduced, and the efficiency is improved.
4. The invention replaces a manual loading mechanism with electric loading and is matched with an electric control system, thereby realizing automatic control of the test process and improving the automation level of the instrument.
Drawings
FIG. 1 is an elevational, cross-sectional view of the present invention;
FIG. 2 is a side sectional view of the present invention;
fig. 3 is a top sectional view of the present invention.
In the figure: 1. an electric lift cylinder; 2. a lifting beam; 3. a weight holder lifting rod; 4. a sample holder lifting pipe; 5. a lifting pipe guide sleeve; 6. a test frame lifting connecting plate; 7. a test frame lifting supporting plate; 8. a test frame; 9. a weight frame lifting supporting plate; 10. loading weights; 11. a test sample; 12. a constant temperature oil tank; 13. measuring a dial indicator; 14. an electric heater; 15. a vertical box body; 16. and a caster.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an electric lifting mechanism of a thermal deformation and Vicat softening point temperature tester, which comprises a vertical box body 15, wherein an electric lifting cylinder 1 is fixed in the middle of the bottom surface of the vertical box body 15, a lifting mandril at the top of the electric lifting cylinder 1 is connected with a lifting cross beam 2, two ends of the lifting cross beam 2 are connected with weight frame lifting rods 3, the top ends of the weight frame lifting rods 3 are connected with weight frame lifting supporting plates 9, a plurality of groups of loading weights 10 are placed on the weight frame lifting supporting plates 9, the top of each weight frame lifting rod 3 is connected with a sample frame lifting pipe 4 in a sliding manner, the sample frame lifting pipes 4 are guided by lifting pipe guide sleeves 5 at two sides, and the lifting pipe guide sleeves 5 are fixed on the box body 15;
the test stand lifting connecting plate 6 and the test stand lifting supporting plate 7 are connected to the top end of the sample stand lifting pipe 4, a plurality of groups of test stands 8 are placed on the test stand lifting supporting plate 7, a test sample 11 is placed at the bottom of each test stand 8, the test sample 11 is subjected to counterweight loading by a loading weight 10 through a standard pressure head, the lower half part of each test stand 8 and the test sample 11 are located in a high-temperature oil bath of a constant-temperature oil tank 12, the test sample 11 deforms through the loading of the upper counterweight in a constant-temperature oil medium, the deformation of the test sample 11 at a certain temperature and under a certain pressure is determined through tests, high-temperature medium oil is filled in the constant-temperature oil tank 12, an electric heater is fixedly installed inside the constant-temperature oil tank 12, the test deformation is measured by a measurement dial indicator 13, and casters 16 are installed at the bottom of the box body 15.
An electric lifting cylinder 1 is fixed in the middle of the bottom surface of the box body 15, the electric lifting cylinder 1 is an executing element of electrical-to-mechanical action of the whole mechanism, the up-and-down linear motion of an ejector rod of the electric lifting cylinder can be realized through electrical control, and the height stroke can be accurately controlled.
The middle of the lower portion of the lifting beam 2 is connected with an electric lifting cylinder 1, two ends of the top of the lifting beam 2 are connected with weight rack lifting rods 3, thrust of the electric lifting cylinder 1 is decomposed into thrust of the weight rack lifting rods 3 on two sides, an upper constant-temperature oil tank 12 is kept away, and the weight rack lifting rods 3 are made to move up and down linearly.
3 overcoat of weight frame lifter has sample frame fall way 4, weight frame lifter 3 and sample frame fall way 4 sliding fit, and sample frame fall way 4 is guided by both sides fall way uide bushing 5, and fall way uide bushing 5 is fixed in on the box 15, and uide bushing 5 guarantees that weight frame lifter 3 and sample frame fall way 4 realize perpendicular up-and-down linear motion, and this has just guaranteed that test frame group 8 is corresponding with the position of counter weight group 10.
When the electric lifting cylinder 1 rises, firstly, the weight holder lifting rod 3 drives the loading weight group 10 to rise H1, so that the weight load is unloaded. Then, the weight holder lifting rod 3 and the sample holder lifting pipe 4 lift together to H2, and drive the loading weight group 10 and the test rack group 8 to lift together to H2, and lift the sample holder away from the high-temperature oil tank. The test requirements of unloading and lifting the test rack group are met in two steps. Similarly, when the electric lifting cylinder 1 descends, firstly, the weight holder lifting rod 3 and the sample holder lifting pipe 4 descend together with H2, and drive the weight loading group 10 and the test holder group 8 to descend together with H2, so that the sample holder is immersed in the high-temperature oil tank. At the moment, the test rack group 8 is kept in place, then, the weight rack lifting rod 3 drives the weight loading group 10 to continuously descend H1, and the weight counterweight group 10 is loaded on the test rack group 8, so that the weight loading is realized. Therefore, the test requirement that the test frame group is loaded with weights after entering the constant-temperature oil medium is met.
The front end of the front surface of the weight frame lifting supporting plate 9 is provided with a plurality of U-shaped openings matched with the counterweight weight group 10, the U-shaped openings are used for arranging measurement dial indicators 13, and the measurement dial indicators 13 are in contact with the test frame group 8. In this way, the weight holder lifting tray 9 does not interfere with the measurement dial gauge 13 when it is raised together with the weight stack 10.
The electric lifting cylinder 1 is driven by a direct current motor, gear speed change, lead screw transmission, power-on transmission, power failure self-locking, stable transmission and accurate positioning. And an electrical control system is configured to realize automatic control of the test.
H1 is the initial height difference between the weight holder lift pin 3 and the sample holder lift tube 4 in fig. 1, which is the height that will ensure that the weight holder lift plate 9 can load or unload the counterweight 10. And the sample holder can be easily removed from the device. H2 is the height of the sample rack and the weight rack, which should ensure the sample rack is completely lifted out or immersed into the high temperature oil tank.
Referring to fig. 1-3, the working principle and the using process of the present invention are as follows: firstly, in the initial state of the instrument, the electric lifting cylinder 1 is at the lowest position, the test rack 8 is placed in the constant temperature oil tank, and the loading weight group 10 is preset at the upper part of the test rack 8. The electric heater 14 was started to heat the oil bath, and the test was started when the temperature was raised to the test temperature.
The electric lifting cylinder 1 is started to lift H1mm, the lifting beam 2 is jacked up H1mm, meanwhile, the weight holder lifting rod 3 connected with two sides and the weight holder lifting supporting plate 9 are driven to ascend, the weight loading weight group 10 (5 kg per frame) placed on the weight holder lifting supporting plate 9 is supported by H1mm, at the moment, the sample holder 8 is fixed, so that the weight group 10 (5 kg per frame) loaded on the sample holder 8 is separated from the sample holder 8, and the unloading of weight weights is realized.
When the electric lifting cylinder 1 continues to lift the H2mm to reach H1+ H2mm, the lifting beam 2 is in contact with the sample holder lifting pipe 4, the lifting beam 2 drives the weight holder lifting rod 3 connected with the two sides and the sample holder lifting pipe 4 to lift the H2mm together, in the stage, the weight holder lifting supporting plate 9 and the weight group 10 are loaded, and the sample holder lifting supporting plate 7 and the sample holder 8 synchronously lift the H2 mm. The total height of the weight stack 10 is H1+ H2 mm. The top rod of the electric lifting cylinder 1 reaches the highest point, at the moment, the bottom of the sample rack 8 is completely lifted out of the top surface of the constant-temperature oil tank 12, so that the bottom of the sample rack 8 is exposed, a test sample 11 is placed at the bottom of the sample rack 8, and a primary load is added.
After the test specimen 11 is completely placed on the specimen holder 8, the next operation is continued. The electric lifting cylinder 1 is started to reversely descend H2mm, the lifting beam 2 drives the weight holder lifting rod 3 connected with the two sides and the sample holder lifting pipe 4 to descend H2mm together, and in the stage, the weight holder lifting supporting plate 9 and the weight group 10 are loaded, and the sample holder lifting supporting plate 7 and the sample holder 8 synchronously descend H2 mm. The sample holder 8 is lowered to the test position. The test specimen 11 was completely immersed in a high-temperature oil bath, and the deformation zero point of the dial gauge was adjusted.
The electric lifting cylinder 1 continues to descend H1mm, the lifting beam 2 descends H1mm, the weight frame lifting rods 3 connected at two sides and the weight frame lifting supporting plates 9 are driven to descend together, the weight loading groups 10 (5 kg per frame) placed on the weight frame lifting supporting plates 9 descend in place, and the counterweight weights are loaded on the sample frame 8, so that the counterweight loading groups 10 (5 kg per frame) loaded on the sample frame 8 realize counterweight loading. And measuring the displacement deformation under the rated load by using a dial indicator, and displaying and recording.
After that, the electric lifting cylinder 1 lifts H1mm again, the lifting beam 2 is jacked up H1mm, and at the same time, the weight holder lifting rod 3 and the weight holder lifting pallet 9 connected at both sides are driven to rise, and the weight-loading groups 10 (5 kg per weight holder) placed on the weight holder lifting pallet 9 are lifted up H1 mm. At this time, the sample rack 8 is not moved, so that the weighted weight group 10 (5 kg per rack) loaded on the sample rack 8 is separated from the sample rack 8, and unloading is realized.
The electric lifting cylinder 1 continues to lift the H2mm, when the H1+ H2mm is reached, the lifting beam 2 is in contact with the sample rack lifting pipe 4, the lifting beam 2 drives the weight rack lifting rod 3 connected with the two sides and the sample rack lifting pipe 4 to lift the H2mm together, in the phase, the weight rack lifting supporting plate 9 and the weight group 10 are loaded, and the sample rack lifting supporting plate 7 and the sample rack 8 synchronously lift the H2 mm. The total height of the weight stack 10 is H1+ H2 mm. The top rod of the electric lifting cylinder 1 reaches the highest point, at the moment, the bottom of the sample rack 8 is completely lifted out of the top surface of the constant-temperature oil tank 12, so that the bottom of the sample rack 8 is exposed, and a test sample 11 which completes a test is taken down from the bottom of the sample rack 8. One test procedure was completed.
And placing the test sample again, and repeating the process to complete the next test.
Therefore, during the test operation, the lifting and the falling of the test frame 8 and the loading and the unloading of the weight group can be realized by controlling the reasonable lifting and the falling of the electric lifting cylinder 1;
according to the invention, the sample frame lifting pipe 4 is lifted out of the constant-temperature oil tank 12 and the weight frame lifting tray 9 is further lifted through two actions of the electric lifting cylinder 1, and the electric lifting cylinder 1 slides in a double-sleeve manner, so that the lifting height of H1 is provided, and the height of H2 can be lifted as required, one lifting point solves the problem of frequent manual loading and unloading of dozens of kilograms of counterweight weights, the labor intensity of an operator is greatly reduced, the working efficiency is improved, the automatic control of the test process can be realized by matching with an electric control system, and the automation level of an instrument is improved.
Claims (9)
1. The utility model provides a thermal deformation, Vicat softening point temperature measurement appearance electric lift mechanism, includes vertical box 15, its characterized in that: department's fixed electric lift jar 1 in the middle of the bottom surface of vertical box 15, the lift ejector pin at 1 top of electric lift jar is connected with lift crossbeam 2, 2 both ends of lift crossbeam are connected with weight frame lifter 3, 3 tops of weight frame lifter are connected with weight frame lift layer board 9, placed multiunit loading weight 10 above the weight frame lift layer board 9, 3 outside covers of weight frame lifter have a slip sample frame fall way 4, sample frame fall way 4 is by 5 sharp direction of both sides fall way uide bushing, fall way uide bushing 5 is fixed in on the box 15.
The test stand lifting connecting plate 6 and the test stand lifting supporting plate 7 are connected to the top end of the sample stand lifting pipe 4, a plurality of groups of test stands 8 are placed on the test stand lifting supporting plate 7, a test sample 11 is placed at the bottom of each test stand 8, the test sample 11 is subjected to counterweight loading by a loading weight 10 through a standard pressure head, the lower half part of each test stand 8 and the test sample 11 are located in a high-temperature oil bath of a constant-temperature oil tank 12, the test sample 11 deforms through the loading of the upper counterweight in a constant-temperature oil medium, the deformation of the test sample 11 at a certain temperature and under a certain pressure is determined through tests, high-temperature medium oil is filled in the constant-temperature oil tank 12, an electric heater 14 is fixedly installed inside the constant-temperature oil tank 12, the test deformation is measured by a measurement dial indicator 13, and casters 16 are installed at the bottom of the box body 15.
2. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: an electric lifting cylinder 1 is fixed in the middle of the bottom surface of the box body 15.
3. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the lower face in the middle of the lifting beam 2 is connected with an electric lifting cylinder 1, and two ends of the top of the lifting beam 2 are connected with a weight rack lifting rod 3.
4. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the 3 outside covers of weight frame lifter have a slip sample frame fall way 4, weight frame lifter 3 and the accurate sliding fit of sample frame fall way 4.
5. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the initial height difference between the weight frame lifting rod 3 and the sample frame lifting pipe 4 of the jacket is H1mm, and the weight frame lifting supporting plate 9 can load or unload the counterweight 10 by the height.
6. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: and in the second step, the electric lifting cylinder simultaneously lifts the weight frame and the sample frame to a height H2mm, and the height ensures that the sample frame is lifted away from the high-temperature oil tank.
7. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the electric lifting cylinder continuously rises or falls, one action is divided into two steps through the initial height difference H1 between the stacking lifting rod 3 and the sample frame lifting pipe 4, and the loading and unloading of the weight load are reasonably realized. Two tasks of lifting the sample rack and the weight rack are completed by one set of mechanism.
8. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the front end of the front surface of the weight frame lifting supporting plate 9 is provided with a plurality of U-shaped openings matched with the counterweight weight group 10, so that the plurality of sample frames can be conveniently assembled and disassembled.
9. A thermally deformable, vicat softening point temperature gauge motorized lift mechanism as claimed in claim 1, wherein: the electric lifting cylinder 1 is driven by a direct current motor, the speed is constant, and the lifting is stable.
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| CN202110682225.XA CN113281373B (en) | 2021-06-20 | 2021-06-20 | Electric lifting mechanism of thermal deformation and Vicat softening point temperature tester |
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| CN202110682225.XA CN113281373B (en) | 2021-06-20 | 2021-06-20 | Electric lifting mechanism of thermal deformation and Vicat softening point temperature tester |
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| CN113281373B CN113281373B (en) | 2023-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773360A (en) * | 2023-08-24 | 2023-09-19 | 成都东华卓越科技有限公司 | Frameless light triaxial tester |
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