CN214150388U - Friction experiment device with controllable environmental temperature and humidity - Google Patents
Friction experiment device with controllable environmental temperature and humidity Download PDFInfo
- Publication number
- CN214150388U CN214150388U CN202023073917.4U CN202023073917U CN214150388U CN 214150388 U CN214150388 U CN 214150388U CN 202023073917 U CN202023073917 U CN 202023073917U CN 214150388 U CN214150388 U CN 214150388U
- Authority
- CN
- China
- Prior art keywords
- humidity
- temperature
- force measuring
- friction
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a controllable friction experiment device of ambient temperature and humidity, include: the device comprises a force measuring rod, a force measuring device and a constant temperature and humidity box; one end of the force measuring rod is arranged in the constant temperature and humidity box, and the other end of the force measuring rod is connected with the force measuring device; one end of the force measuring rod, which is arranged in the constant temperature and humidity box, is provided with a friction pair, and the force measuring device can drive the force measuring rod to move for a set distance at a set moving speed and measure the friction force between the friction pairs; wherein, constant temperature and humidity case can provide controllable ambient temperature and humidity for the friction is vice.
Description
Technical Field
The utility model relates to a friction test equipment technical field, concretely relates to controllable friction experiment device of ambient temperature and humidity.
Background
Friction, which originates from the interaction between relative movements or surfaces with a tendency to move relative, is widely present in nature and in human productive life, on the one hand, for example, in the normal working of clutches or in the movement of animals, if there is no friction, even when humans are difficult to perform, in which case friction is daily necessary. On the other hand, the presence of friction means a loss of energy, for example, between the drive shaft and the hub of an automobile, which results in a loss of kinetic energy output by the engine. More importantly, in the field of friction, the friction science has the characteristics of disciplinary frontier, wide practicability and multidisciplinary intersection, and the disciplinary basis of the friction science relates to the fields of mechanics, material science, manufacturing science, mechanical design and the like. Therefore, accurate measurement and research, and further effective regulation and control of the friction force have important significance for human production and life and the progress of scientific technology. It is known that in most solid friction pairs, the temperature and humidity of the environment have a large influence on the measurement of the friction force, and especially when the humidity in the environment is relatively high or the temperature changes greatly, water vapor can be condensed on the surface of the friction pair and even form small water drops to play a role in lubrication, thereby affecting the accurate measurement of the friction force. However, the existing friction force testing device still has a deficiency in this respect, and it is difficult to effectively control the temperature and humidity in the test environment at the same time, so that it is difficult to overcome the influence of the ambient temperature and humidity. Furthermore, it is also difficult to quantitatively examine the influence of temperature and humidity changes (particularly, high temperature, high humidity, and low temperature of 0 ℃ or lower) on the frictional force using the existing equipment. In conclusion, the design of the friction experiment device which can control the temperature and the humidity simultaneously in the set temperature and humidity range (the temperature regulation and control range is-20-150 ℃ and the humidity regulation and control range is 15-98%), particularly realizes the effective control of high-temperature, high-humidity and low-temperature environments, and has very important significance.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a controllable friction experiment device of ambient temperature and humidity can accurately develop the friction experiment under the temperature of environment and the controllable condition of humidity.
The technical scheme of the utility model is that: a friction experiment device with controllable ambient temperature and humidity comprises: the device comprises a force measuring rod, a force measuring device and a constant temperature and humidity box; one end of the force measuring rod is arranged in the constant temperature and humidity box, and the other end of the force measuring rod is connected with the force measuring device; one end of the force measuring rod, which is arranged in the constant temperature and humidity box, is provided with a friction pair, and the force measuring device can drive the force measuring rod to move for a set distance at a set moving speed and measure the friction force between the friction pairs; wherein, constant temperature and humidity case can provide controllable ambient temperature and humidity for the friction is vice.
Preferably, the friction pair comprises: a sample to be tested and a base material.
Preferably, the constant temperature and humidity chamber includes: a temperature/humidity control device, a temperature/humidity control chamber and a box door; a test platform and a clamp are arranged in the temperature/humidity control chamber; one end of the force measuring rod, which extends into the constant temperature and humidity box, extends into a temperature/humidity control chamber arranged in the constant temperature and humidity box through a round hole arranged on the constant temperature and humidity box and is connected with a clamp, and the bottom of the clamp clamps a sample to be tested; the height of the force measuring rod is adjusted through the force measuring device, so that the height of the clamp is adjusted, and a to-be-measured sample carried by the clamp is in contact fit with a base material arranged on the upper end face of the test platform; wherein, the side of the constant temperature and humidity box is provided with a box door, and the temperature/humidity control chamber is arranged in the constant temperature and humidity box through the box door; the temperature/humidity control device is arranged on the box body of the constant temperature and humidity box, is connected with the temperature/humidity control chamber and is used for regulating and controlling the temperature and the humidity in the temperature/humidity control chamber to reach a set value.
Preferably, the jig comprises: a circular ring and a weight; the ring is connected with the force measuring rod, and the weight is clamped in the ring and can clamp a sample to be measured.
Preferably, the inner wall surface of the temperature/humidity control chamber is provided with more than two clamping grooves along the height direction, and the test platform is arranged in different clamping grooves to adjust the corresponding height of the test platform, so that the height between the substrate material and the sample to be tested clamped by the clamp is adjusted.
Preferably, the temperature regulation range is-20 ℃ to 150 ℃, and the relative humidity regulation is 15% to 98% at the set temperature.
Preferably, the force measuring device comprises: the device comprises a force measuring device shell, a motor, a belt, a threaded rod, a moving platform, a workbench, a positioning nut, a horizontal beam, a force sensor and a stand column;
a motor is installed on one side inside the force measuring device shell, a threaded rod is installed at the top end inside the force measuring device shell, an output shaft of the motor is connected with the threaded rod through a belt, and the threaded rod and the moving platform form a screw rod nut pair; a workbench is arranged on the upper end surface of the outer surface of the force measuring device shell, two parallel guide grooves are formed in the workbench, two vertical stand columns are arranged on the upper surface of the moving platform, and the two stand columns penetrate out of the upper end of the force measuring device shell and can respectively slide in the two guide grooves in the workbench along the longitudinal direction of the force measuring device shell;
a horizontal cross beam is arranged between the upper ends of the two upright columns, and the two ends of the horizontal cross beam and the two upright columns are locked at the set height position of the upright columns through positioning nuts; and the middle part of the horizontal beam is provided with a force sensor, and the force sensor is connected with a sample to be tested arranged in the constant temperature and humidity box through a force measuring rod.
Preferably, the force measuring device further comprises: a limiting device; the mobile platform is connected with the limiting device, and the limiting device limits the mobile platform to move in a set interval.
Preferably, the height of the force measuring rod can be adjusted by adjusting the locking height of the positioning nut on the upright post.
Has the advantages that:
1. the friction experiment device of the utility model uses the constant temperature and humidity box to simply and reliably realize the control of temperature and humidity in the experiment environment on the basis of the verification precision, and can accurately carry out the friction experiment under the condition that the temperature and the humidity of the environment are controllable, the operation is simple and convenient, the result is stable and reliable, the cost is lower, and the application significance is important; meanwhile, aiming at some experiments insensitive to the ambient temperature and humidity, the experimental device can also be separated from the constant temperature and humidity box, and a force measuring device is used for carrying out experiments in the room temperature environment.
2. The utility model discloses well constant temperature and humidity case's concrete setting can be effectively for setting up the ambient temperature and the humidity of providing the settlement in its inside friction pair.
3. The utility model discloses well test platform height-adjustable's setting on accuse temperature/accuse humidity chamber inner wall face can effectively adjust the height between the sample that awaits measuring of base material and anchor clamps centre gripping.
4. The utility model discloses a constant temperature and humidity case is controlled the temperature and the humidity of experimental environment, can be at the temperature regulation and control scope for-20 ℃ -150 ℃, under the relative humidity regulation and control scope was 15% ~ 98% environment, steadily develop the vice friction experiment of friction, and can effectively avoid ambient temperature and humidity to produce obvious influence to the experiment precision.
5. The utility model discloses the concrete setting of measuring force device drives moving platform, dynamometry pole, anchor clamps and the sample motion of being tested through the motor, has realized being fixed in the vice relative friction of friction between anchor clamps and the test platform, and the positive pressure that is exerted on the friction is vice derives from the gravity of weight, can effectively get rid of the measuring error that mechanical fit brought like this, makes the frictional force data of measurement more accurate, and simple structure, convenient operation; and simultaneously, the utility model discloses a friction experiment device can effectively protect force transducer with force transducer setting in the outside of constant temperature and humidity case, makes it avoid the influence of temperature and humidity change, can effectively guarantee force transducer's measuring accuracy and life, can effectively reduce the experimental space that needs controlled temperature and humidity in addition, is favorable to improving experimental efficiency, reduces energy consumption simultaneously.
6. The utility model discloses a stop device carries on spacingly to moving platform's removal, can effectively guarantee that moving platform removes in safe region.
Drawings
Fig. 1 is the structure schematic diagram of the friction experiment device of the utility model.
Fig. 2 is a front view of the force measuring device of the present invention.
Fig. 3 is a top view of the force measuring device of the present invention.
Fig. 4 is a left side view of the force measuring device of the present invention.
Fig. 5 is a right side view of the middle constant temperature and humidity chamber of the present invention.
The device comprises a force measuring device shell, a motor, a belt, a threaded rod, a moving platform, a working table top, a positioning nut, a horizontal beam, a force sensor, a force measuring rod, a ring, a weight, a constant temperature and humidity box, a test platform, a round hole, a limiting device, a column, a guide groove, a temperature/humidity control device, a temperature/humidity control chamber, a sample to be tested, a box door and a box door, wherein the force measuring device comprises 1-a force measuring device shell, 2-a motor, 3-a belt, 4-a threaded rod, 5-a moving platform, 6-a working table top, 7-a positioning nut, 8-a horizontal beam, 9-a force sensor, 10-a force measuring rod, 11-a round ring, 12-a weight, 13-a constant temperature and humidity box, 14-a test platform, 15-a round hole, 16-a limiting device, a column, 18-a guide groove, 19-a temperature/humidity control device, a temperature/humidity control chamber, 21-a sample to be tested and a box door.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
This embodiment provides a controllable friction experiment device of ambient temperature and humidity, can be under the controllable condition of the temperature and the humidity of environment, and the accurate friction experiment that carries out.
As shown in fig. 1, the friction test device includes: a force measuring device and a constant temperature and humidity chamber 13 connected by a force measuring rod 10, as shown in fig. 2-4, the force measuring device comprises: force measuring device casing 1, motor 2, belt 3, threaded rod 4, moving platform 5, table surface 6, set nut 7, horizontal beam 8, force transducer 9 and stand 17, as shown in fig. 5, constant temperature and humidity case 13 is inside to be equipped with: a temperature/humidity control device 19, a temperature/humidity control chamber 20, and a door 22; the temperature/humidity control chamber 20 is internally provided with a test platform 14, a clamp (comprising a circular ring 11 and weights 12), a test table and a test table,
The connection relationship of the friction experimental device is as follows: a motor 2 is installed on one side inside the force measuring device shell 1, a threaded rod 4 is installed at the top end inside the force measuring device shell, an output shaft of the motor 2 is connected with the threaded rod 4 through a belt 3 (the belt 3 is tensioned between the output shaft of the motor 2 and the threaded rod 4), and belt transmission is achieved; the threaded rod 4 is in threaded connection with a movable platform 5, and a screw-nut pair is formed between the movable platform and the threaded rod; a working table surface 6 is arranged on the upper end surface of the outer surface of the force measuring device shell 1, two parallel guide grooves 18 are arranged on the working table surface 6, two vertical upright posts 17 are arranged on the upper surface of the movable platform 5, and the two upright posts 17 penetrate out of the upper end of the force measuring device shell 1 and can respectively slide in the two guide grooves 18 on the working table surface 6 along the longitudinal direction of the force measuring device shell; the mobile platform 5 is connected with a limiting device 16, and the limiting device 16 limits the mobile platform 5 to move in a set safety interval;
a horizontal cross beam 8 is arranged between the upper ends of the two upright columns 17, and the two ends of the horizontal cross beam 8 and the two upright columns 17 are locked at the set height positions of the upright columns 17 through positioning nuts 7; the middle part of the horizontal beam 8 is provided with a force sensor 9, and the force sensor 9 is connected with a sample 21 to be tested arranged in the constant temperature and humidity box 13 through a force measuring rod 10;
one end of the force measuring rod 10 extending into the constant temperature and humidity chamber 13 extends into a temperature/humidity control chamber 20 arranged in the constant temperature and humidity chamber 13 through a round hole 15 arranged on the constant temperature and humidity chamber 13 and is connected with a ring 11 arranged in the temperature/humidity control chamber 20, a weight 12 is clamped in the ring 11 and serves as a clamp, and the bottom of the weight is used for clamping a sample 21 to be measured; the height of the horizontal cross beam 8 is adjusted through the positioning nut 7, and then the height of the force measuring rod 10 is adjusted, so that the height adjustment of the circular ring 11 is realized, and the to-be-measured sample 21 carried by the clamp is in good contact fit with the base material arranged on the upper end surface of the test platform 14; the inner wall surface of the temperature/humidity control chamber 20 is provided with clamping grooves with different heights, and the test platform 14 is arranged in the clamping grooves with different heights and can effectively adjust the corresponding heights, so that the height between the base material arranged on the test platform and the sample 21 to be tested clamped by the clamp is adjusted; wherein, the side of the constant temperature and humidity box 13 is provided with a box door 22, and the temperature/humidity control chamber 20 is arranged in the constant temperature and humidity box 13 through the box door 22; the temperature/humidity control device 19 is arranged on the box body of the constant temperature and humidity box 13, is connected with the temperature/humidity control chamber 20, and is used for regulating and controlling the temperature and the humidity in the temperature/humidity control chamber 20 to reach set values; in the embodiment, the temperature regulation range is-20-150 ℃, and the relative humidity regulation range is 15-98% at the set temperature;
the temperature and humidity control in the experiment process can control the operation of the compressor, the electric heating tube and the humidifying device which are arranged in the temperature/humidity control chamber 20 through the temperature/humidity control device 19, and simultaneously, the temperature and the humidity in the temperature/humidity control chamber 20 are detected and adjusted in real time through the temperature sensor and the humidity sensor which are arranged in the temperature/humidity control chamber, so that the temperature and the humidity are stably kept at set values, and the experiment is ensured to be carried out at the set temperature and humidity.
The working principle of the friction experimental device is as follows: in the set temperature and humidity environment, when the friction force between the sample 21 to be measured and the base material needs to be measured, firstly, the door 22 of the constant temperature and humidity chamber 13 is opened, the base material is fixed on the test platform 14, and then the positioning nut 7 is adjusted, so that the circular ring 11 is slightly higher than the base material; then, the door 22 is closed, and the temperature/humidity control device 19 is preliminarily adjusted so that the temperature and humidity in the temperature/humidity control chamber 20 reach set values, thereby ensuring that the base material reaches a stable state in the set temperature and humidity environment; then, the door 22 is opened to fix the sample 21 to be measured on the weight 12 with the set weight, and the weight 12 is clamped in the circular ring 11, so that the sample 21 to be measured is in free contact with the base material; the door 22 is closed, and the temperature and the humidity in the temperature/humidity control chamber 20 of the constant temperature and humidity chamber 13 reach the set values and keep constant under the control of the temperature/humidity control device 19 again; after the temperature and the humidity in the constant temperature and humidity box 13 reach set values, setting parameters (moving speed, moving distance and cycle number) on the force measuring device, and then starting a test; during an experiment, the upper computer controls the motor 2 to act, so that the motor 2 drives the threaded rod 4 to rotate through the belt 3, the movable platform 5 slides along the guide groove 18 on the working table surface 6, the movable platform 5 is connected with the force sensor 9 through the upright column 17 and the horizontal cross beam 8, and is connected with a sample 21 to be tested through the force measuring rod 10, the circular ring 11 and the weight 12, so that the sample 21 to be tested is clamped by the weight 12 and positive pressure of a set value is applied to a base material, and the motor 2 drives the sample 21 to be tested to move at a set speed, so that the friction force of the sample 21 to be tested relative to the base material is measured; in this case, the positive pressure applied to the sample 21 to be measured is only from the weight 12, and the tangential force (which is the same as the frictional force to be measured and has an opposite direction) is measured by the force sensor 9, so that the measured frictional force can effectively avoid the experimental data misalignment caused by mechanical errors; parameters such as the moving speed, the moving distance, the cycle times and the like of the moving platform 5 on the force measuring device can be set through the upper computer;
after the measurement is completed once, the temperature and humidity in the temperature/humidity control chamber 20 can be changed by the temperature/humidity control device 19, and the experiment is performed again, so that the accurate friction force under the test conditions of the same positive pressure, different environmental temperatures, environmental humidities and relative movement speeds can be obtained; after the experiment under the same positive pressure is finished, the box door 22 can be opened, the weight of the weight 12 can be changed, and the experiment process can be repeated, so that the friction force of the sample 21 to be tested under different positive pressures can be tested;
in the testing process, due to the existence of the round hole 15 on the constant temperature and humidity box 13, the temperature/humidity control chamber 20 is not completely closed, but the temperature/humidity control device 19 can adjust the temperature and the humidity in the temperature/humidity control chamber 20 in real time, and in addition, the round hole 15 is very small relative to the temperature/humidity control chamber 20, so that the constant temperature and the constant humidity can be obtained in the temperature/humidity control chamber 20 more easily.
In addition, the friction test apparatus can also perform tensile and compression tests at a set temperature and humidity, and various tests can be performed for different test samples 21 and base samples, for example, the tensile strength of ice at a specific temperature, the bonding strength between the ice surface and the base surface, and the like can be tested.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a controllable friction experiment device of ambient temperature and humidity which characterized in that includes: the device comprises a force measuring rod (10), a force measuring device and a constant temperature and humidity box (13); one end of the force measuring rod (10) is arranged in the constant temperature and humidity box (13), and the other end of the force measuring rod is connected with the force measuring device; one end of the force measuring rod (10) arranged in the constant temperature and humidity box (13) is provided with a friction pair, and the force measuring device can drive the force measuring rod (10) to move for a set distance at a set moving speed and measure the friction force between the friction pairs; wherein, constant temperature and humidity case (13) can provide controllable ambient temperature and humidity for the friction pair.
2. A friction tester controlled by ambient temperature and humidity as described in claim 1 wherein said friction pair comprises: a sample (21) to be measured and a base material.
3. The friction experimental device with controllable ambient temperature and humidity according to claim 2, characterized in that said constant temperature and humidity chamber (13) comprises: a temperature/humidity control device (19), a temperature/humidity control chamber (20) and a box door (22); a test platform (14) and a clamp are arranged in the temperature/humidity control chamber (20); one end of the force measuring rod (10) extending into the constant temperature and humidity box (13) extends into a temperature/humidity control chamber (20) arranged in the constant temperature and humidity box (13) through a round hole (15) arranged on the constant temperature and humidity box (13) and is connected with a clamp, and the bottom of the clamp clamps a sample (21) to be measured; the height of the force measuring rod (10) is adjusted through the force measuring device, so that the height of the clamp is adjusted, and a to-be-measured sample (21) carried by the clamp is in contact fit with a base material arranged on the upper end surface of the test platform (14); wherein, the side of the constant temperature and humidity box (13) is provided with a box door (22), and the temperature/humidity control chamber (20) is arranged on the constant temperature and humidity box (13) through the box door (22); the temperature/humidity control device (19) is arranged on the box body of the constant temperature and humidity box (13), is connected with the temperature/humidity control chamber (20), and is used for regulating and controlling the temperature and the humidity in the temperature/humidity control chamber (20) to reach a set value.
4. A friction experiment device with controllable ambient temperature and humidity according to claim 3 wherein said fixture comprises: a circular ring (11) and a weight (12); the circular ring (11) is connected with the force measuring rod (10), and the weight (12) is clamped in the circular ring (11) and can clamp the sample (21) to be measured.
5. The friction experiment device with controllable ambient temperature and humidity according to claim 3, wherein the inner wall surface of the temperature/humidity control chamber (20) is provided with more than two clamping grooves along the height direction, and the test platform (14) is installed in different clamping grooves to adjust the corresponding height thereof, so as to adjust the height between the substrate material and the sample (21) to be tested clamped by the clamp.
6. A friction experimental device with controllable ambient temperature and humidity according to claim 3, characterized in that the temperature control range is-20 ℃ to 150 ℃, and the relative humidity control at the set temperature is 15% to 98%.
7. A friction test rig with controllable ambient temperature and humidity according to claim 3, wherein said force measuring device comprises: the device comprises a force measuring device shell (1), a motor (2), a belt (3), a threaded rod (4), a moving platform (5), a workbench (6), a positioning nut (7), a horizontal cross beam (8), a force sensor (9) and a stand column (17);
an electric motor (2) is installed on one side inside the force measuring device shell (1), a threaded rod (4) is installed at the top end inside the force measuring device shell, an output shaft of the electric motor (2) is connected with the threaded rod (4) through a belt (3), and the threaded rod (4) and the moving platform (5) form a screw-nut pair; a workbench (6) is arranged on the upper end surface of the outer surface of the force measuring device shell (1), two parallel guide grooves (18) are formed in the workbench (6), two vertical stand columns (17) are arranged on the upper surface of the movable platform (5), the two stand columns (17) penetrate out of the upper end of the force measuring device shell (1) and can respectively slide in the two guide grooves (18) in the workbench (6) along the longitudinal direction of the force measuring device shell;
a horizontal cross beam (8) is arranged between the upper ends of the two upright columns (17), and the two ends of the horizontal cross beam (8) and the two upright columns (17) are locked at the set height position of the upright columns (17) through positioning nuts (7); a force sensor (9) is arranged in the middle of the horizontal beam (8), and the force sensor (9) is connected with a sample (21) to be tested arranged in the constant temperature and humidity box (13) through a force measuring rod (10).
8. A friction test rig with controllable ambient temperature and humidity according to claim 7, wherein said force measuring device further comprises: a limiting device (16); the mobile platform (5) is connected with the limiting device (16), and the limiting device (16) limits the mobile platform (5) to move in a set interval.
9. Friction laboratory apparatus with controlled ambient temperature and humidity according to claim 7 characterized by the fact that the height of the force measuring bar (10) can be adjusted by adjusting the locking height of the positioning nut (7) on the upright (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023073917.4U CN214150388U (en) | 2020-12-18 | 2020-12-18 | Friction experiment device with controllable environmental temperature and humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023073917.4U CN214150388U (en) | 2020-12-18 | 2020-12-18 | Friction experiment device with controllable environmental temperature and humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214150388U true CN214150388U (en) | 2021-09-07 |
Family
ID=77588367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023073917.4U Active CN214150388U (en) | 2020-12-18 | 2020-12-18 | Friction experiment device with controllable environmental temperature and humidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214150388U (en) |
-
2020
- 2020-12-18 CN CN202023073917.4U patent/CN214150388U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105181481B (en) | A kind of three-point bending fatigue tester | |
| CN106124337B (en) | Device for high-temperature creep test and stress relaxation test of rubber elastomer | |
| CN108333046B (en) | Device for measuring mechanical property of membrane material and method for measuring by adopting device | |
| CN104897477B (en) | A kind of pitch class Material Creep Test device | |
| CN207456396U (en) | Higher pair contact becomes sliding rolling and measures simulator simultaneously than oil film thickness and frictional force | |
| CN205643036U (en) | An axle form crooked deformation test device | |
| CN110579418A (en) | lever loading type friction wear testing machine capable of controlling magnetic field environment | |
| CN206248527U (en) | A kind of device for measuring coefficient of rolling friction | |
| CN111707607A (en) | Friction sensitivity testing device and method | |
| CN104132622A (en) | Distributed optical fiber deformation tensile instrument and test method | |
| CN214150388U (en) | Friction experiment device with controllable environmental temperature and humidity | |
| CN103063515A (en) | Tensile creep test device for cement-based materials | |
| CN110231137A (en) | A kind of pilot system and method suitable for the test of relay anti-dropping capability | |
| CN112611708A (en) | Friction experiment device with controllable environmental temperature and humidity | |
| CN108489651B (en) | Multi-angle fillet weld residual stress test centering device | |
| CN208580017U (en) | A kind of rubber material surface friction property test device | |
| CN103499601B (en) | A kind of method and apparatus testing textile dynamic thermal transmission characteristic | |
| CN208795607U (en) | A kind of accurate torsion thrust measurement testing machine | |
| CN108645447B (en) | Micro friction test equipment and data acquisition method | |
| CN113776958B (en) | Roller bending device for bending test | |
| CN203606234U (en) | Test unit for researching material uniaxial creep effect | |
| CN206683853U (en) | A kind of Manual spring tensile and compression testing machine | |
| CN212622139U (en) | Friction sensitivity testing device | |
| CN104833589A (en) | Low-temperature compression set test machine | |
| CN204007534U (en) | A kind of distribution type fiber-optic deformation tensilometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |