CN113129709A - Physical experiment mechanics slider - Google Patents
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- CN113129709A CN113129709A CN202010044097.1A CN202010044097A CN113129709A CN 113129709 A CN113129709 A CN 113129709A CN 202010044097 A CN202010044097 A CN 202010044097A CN 113129709 A CN113129709 A CN 113129709A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 41
- 230000005484 gravity Effects 0.000 claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 230000033001 locomotion Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 230000003930 cognitive ability Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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Abstract
A physical experiment mechanical slide block relates to the technical field of physical experiments; the device comprises a shell, a draw hook, a cover plate, a first connecting plate, a second connecting plate, a gravity sensor, a battery pressing plate, a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a weight and a working platform; the drag hook install in one side of shell, the bottom of shell is located to the apron lid, first connecting plate is connected with the upper portion of shell, the one end of second connecting plate links together with the medial surface of shell, the other end is connected with gravity sensor, gravity sensor's the other end and drag hook fixed assembly, the battery passes through the battery clamp plate to be fixed on first connecting plate. The invention intelligently upgrades the slide block of the mechanical experiment without changing the appearance and the structure of the traditional physical experiment slide block, achieves the purpose of intelligent monitoring, and does not influence the steps and habits of students for operating components after optimization.
Description
Technical Field
The invention relates to the technical field of physical experiments, in particular to a mechanical sliding block for physical experiments.
Background
Physics is a natural science based on observation and experiment, and the experimental basis, theoretical system and research method of physics play a very important role in the development of intelligent structures of students. Since physics itself is abstract, if the dispersing thinking and creativity of students can be cultured in the teaching of physical experiments, the cognitive ability of students is improved, and the germination of creativity plays a powerful role, so that many students specially set up physical experiment courses, in the operation process of students on related physical components, the cognitive ability and the practical ability of students on the related components are improved, and further the interest of students on the physical courses is improved.
In a physical experiment mechanical experiment, a tension meter is needed to pull a sliding block, and a corresponding tension value is obtained by reading a numerical value on a dial on the tension meter. In the physical experiment mechanical examination, a teacher observes the operation of students so as to evaluate the physical experiment scores.
At present, most of mechanical mechanics experiments have the following problems:
firstly, in a physical experiment mechanical examination, a teacher needs to observe the operation of students to give experiment scores, the scoring efficiency is low, and the possibility of misjudgment exists;
secondly, most of the existing sliding blocks are simply processed by wood blocks, and the appearance is rough;
in a physical mechanics experiment, the movement track, the movement speed and the movement distance of the sliding block pulled by students cannot be detected by an intelligent method;
in a physical mechanics experiment, whether the student pulls the sliding block to be standard or not can be judged only by human eyes and cannot be detected by an intelligent method.
Disclosure of Invention
The invention aims to provide a physical experiment mechanical slide block which has high intelligent degree, can be monitored in real time, can monitor a motion track, can store and analyze a tension value of a tension meter and can give an experiment score in real time, aiming at the defects and the defects of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the device comprises a shell, a draw hook, a cover plate, a first connecting plate, a second connecting plate, a gravity sensor, a battery pressing plate, a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a weight and a working platform;
the drag hook install in one side of shell, the bottom of shell is located to the apron lid, first connecting plate is connected with the upper portion of shell, the one end of second connecting plate links together with the medial surface of shell, the other end is connected with gravity sensor, gravity sensor's the other end and drag hook fixed assembly, the battery passes through the battery clamp plate to be fixed on first connecting plate, first circuit board, second circuit board, third circuit board, fourth circuit board are fixed respectively on four faces in the inboard of shell, the weight is placed on the shell.
The shell comprises a drag hook mounting position, an object stage, a first moving plane, a second moving plane, a third plane and a cover plate mounting position; the drag hook installation position is a breach on the shell, the objective table is concave, first motion plane is a side of shell, and the middle part is equipped with first pair of perforation, the second motion plane is located the other side of shell, and the middle part is equipped with the second and is to the perforation, the third plane is the back of shell, including the reset hole, the hole that charges, the light trap, apron installation position is used for the fixed mounting of bolt and apron.
The draw hook is embedded into the draw hook mounting position of the shell, is in non-contact with the shell, is fixedly assembled with the gravity sensor through a bolt, and is provided with a circular notch at the front end.
The cover plate is arranged at the bottom of the shell and fixedly connected with the shell through a cover plate mounting position, and a third pair of perforation holes are formed in the middle of the cover plate.
The first connecting plate is in a flat plate shape and is connected with the upper part of the shell.
The second connecting plate is L-shaped, one end of the second connecting plate is connected with the inner side face of the shell, and the other end of the second connecting plate is connected with the gravity sensor.
One end of the gravity sensor is connected with the second connecting plate, and the other end of the gravity sensor is connected with the drag hook and electrically connected with the first circuit board.
The battery is arranged at the lower part of the first connecting plate and is electrically connected with the first circuit board.
The battery pressing plate is U-shaped and presses the battery on the first connecting plate through the bolt.
The utility model discloses a radio frequency identification device, including shell, first circuit board, second circuit board, third circuit board, fourth circuit board electricity is connected, including the base plate, charging socket, reset button, pilot lamp, fourth correlation sensor, the RFID inductor, the base plate is the base member of first circuit board, charging socket is connected with the battery electricity, reset button locates the lower part of first circuit board, fourth correlation sensor welding is on first circuit board, the RFID sensor welding is on first circuit board.
The second circuit board is arranged on the back face of the second moving plane, the third circuit board is arranged on the back face of the first moving plane, the fourth circuit board is fixed on the cover plate, and the second circuit board, the third circuit board, the fourth circuit board and the first circuit board are electrically connected.
The weight is placed on the shell and comprises a weight body and an RFID card, wherein a groove is formed in the lower portion of the weight body, and the RFID card is cylindrical and is arranged in the groove in the lower portion of the weight body.
The working platform comprises a working base, a fixing plate, a receiving sensor circuit board, a camera assembly and a tension meter, wherein the fixing plate is fixedly installed together with the working base through a bolt, the receiving sensor circuit board is installed on the fixing plate, the camera assembly is erected at the rear end of the working base, and the tension meter is connected with a drag hook of a mechanical slider.
After adopting the structure, the invention has the beneficial effects that:
1. the invention intelligently upgrades the slide block of the mechanical experiment without changing the appearance and the structure of the traditional physical experiment slide block, achieves the purpose of intelligent monitoring, and does not influence the steps and habits of students for operating components after optimization;
2. the gravity sensor is adopted to read and identify the tension value of the tension meter, the characteristics of high precision and high sensitivity of identifying the tension value are provided, and the acquired data can be transmitted to external equipment through Bluetooth or wifi;
3. different sliding surfaces are arranged on the mechanical sliding device, the areas and the materials of the sliding surfaces are different, and multiple mechanical sliding can be realized on different sliding surfaces;
4. the rechargeable battery is arranged on the circuit board, so that the circuit board can be powered, and the mode that an external cable is needed to power the circuit board is eliminated;
5. the working platform used in cooperation with the mechanical sliding block is provided with a receiving sensor which can receive signals of the correlation sensor of the mechanical sliding block, so that the motion track of the mechanical sliding block can be identified;
6. the working platform used in cooperation with the mechanical sliding block is provided with the camera assembly, so that the motion information of the mechanical sliding block and the tension meter on the working platform can be subjected to video identification and recording;
7. in the physics experiment mechanics examination, after a teacher only needs to give the student the examination content, the student operates related devices, then the slider transmits data to the processing equipment of the backstage through Bluetooth or wifi, the backstage equipment collects the numerical information that comes back, on the one hand, the numerical information can be stored on the equipment, on the other hand, the operation of the student can be judged accurately or not, whether the score of each step can be obtained or not, after the student submits, the examination is finished, the score of the examination of the student can be known immediately, and the real-time monitoring and the intelligent operation of the whole mechanics device are realized. The examination efficiency of the physical experiment is greatly improved, repeated and monotonous scoring work of teachers is reduced, and the possibility of score misjudgment is reduced;
8. in the physical experiment mechanical examination, when a user operates the sliding block, the background can monitor which sliding surface of the sliding block is in contact with an external plane in real time, the motion track of the sliding block can be judged, the motion speed, the motion time and the motion distance of the sliding block can be monitored, and the weight of a weight on an objective table can be detected.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an exploded block diagram of the present invention;
FIG. 4 is a block diagram of one orientation of the housing of the present invention;
FIG. 5 is a block diagram of another orientation of the housing of the present invention;
FIG. 6 is a block diagram of a first circuit board of the present invention;
FIG. 7 is a structural view of the weight of the present invention;
FIG. 8 is a schematic view of the operation of this embodiment without the addition of weights;
fig. 9 is a schematic view of the operation of adding weights in the present embodiment.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1 to 9, the following technical solutions are adopted in the present embodiment: the device comprises a shell 1, a draw hook 2, a cover plate 3, a first connecting plate 4, a second connecting plate 5, a gravity sensor 6, a battery 7, a battery pressing plate 8, a first circuit board 9, a second circuit board 10, a third circuit board 11, a fourth circuit board 12, a weight 13 and a working platform 14;
The shell 1 comprises a drag hook mounting position 1-1, an object stage 1-2, a first moving plane 1-3, a second moving plane 1-4, a third plane 1-5 and a cover plate mounting position 1-6; the drag hook mounting position 1-1 is a gap on the shell 1, the objective table is concave 1-2, the first motion plane 1-3 is one side surface of the shell 1, the middle part is provided with a first pair of perforation holes 1-3-1, the second motion plane 1-4 is positioned on the other side surface of the shell 1, the middle part is provided with a second pair of perforation holes 1-4-1, the third plane 1-5 is the back surface of the shell 1 and comprises a reset hole 1-5-1, a charging hole 1-5-2 and a light transmission hole 1-5-3, the reset hole 1-5-1 is a small hole, a reset button on the first circuit board 9 can be touched through the hole, the charging hole 1-5-2 is elliptical, and the mechanical slider can be charged by inserting the charging hole, the light hole 1-5-3 is a through hole for transmitting light of an indicator light 9-4 on the first circuit board 9, and the cover plate mounting position 1-6 is used for fixedly mounting the bolt and the cover plate 3.
The draw hook 2 is embedded into the draw hook mounting position 1-1 of the shell 1, is in non-contact with the shell 1, is fixedly assembled with the gravity sensor 6 through a bolt, and is provided with a circular notch at the front end.
The cover plate 3 is arranged at the bottom of the shell 1 and is fixedly connected with the shell 1 through the cover plate mounting positions 1-6 to form a rectangular shape, the rectangular shape has certain thickness and unlimited materials, and can be made of plastics, metals, organic glass or other materials, the rectangular shape is not limited by the patent, the smooth degrees of the cover plate 3-are different by different materials, so that the friction coefficients are different, the friction coefficients of the cover plate 3 and media in external contact can be different by replacing different cover plates 3, and the middle part of the cover plate is provided with a third pair of perforation holes 3-1.
The first connecting plate 4 is in a flat plate shape and is connected to the upper portion of the housing 1.
The second connecting plate 5 is L-shaped, one end of the second connecting plate is connected with the inner side face of the shell 1, and the other end of the second connecting plate is connected with the gravity sensor 6.
The battery 7 is arranged at the lower part of the first connecting plate 4, is electrically connected with the first circuit board 9, has certain electric quantity, and can supply power to other components through the first circuit board 9.
The battery pressing plate 8 is U-shaped, and the battery 7 is pressed on the first connecting plate 4 through a bolt.
The first circuit board 9 is arranged on the inner side surface of the shell 1 and is electrically connected with the second circuit board 10, the third circuit board 11 and the fourth circuit board 12, the first circuit board comprises a substrate 9-1, a charging socket 9-2, a reset button 9-3, an indicator lamp 9-4, a fourth correlation sensor 9-5 and an RFID sensor 9-6, the substrate 9-1 is a base body of the first circuit board 9, the charging socket 9-2 is electrically connected with a battery 7, other electronic components are welded on the substrate 9-1, the charging socket 9-2 is used for charging the battery 7 after an external charging cable is connected with the charging socket 9-2, the reset button 9-3 is arranged on the lower portion of the first circuit board 9, and the whole mechanical slider can be reset by pressing the reset button 9-3 through a reset hole 1-5-1 of the shell 1, the indicator light 9-4 can emit light in a specific state through program setting, can indicate or give an alarm to the working state of the mechanical slider, the fourth correlation sensor 9-5 is welded on the first circuit board 9 and exposed out of the objective table 1-2 to receive a sensor signal in front of the fourth correlation sensor, the fourth correlation sensor 9-5 is welded on the first circuit board 9, the RFID sensor 9-6 is welded on the first circuit board 9 and used for receiving the RFID card 13-2 information of the weight 13, and an electric signal acquired by the first circuit board 9 can be transmitted to external equipment through Bluetooth or wifi.
The second circuit board 10 is arranged on the back of the second moving plane 1-4, the third circuit board 11 is arranged on the back of the first moving plane 1-3, the fourth circuit board 12 is fixed on the cover plate 3, the second circuit board 10, the third circuit board 11 and the fourth circuit board 12 are electrically connected with the first circuit board 9, and the first correlation sensor 10-1 is arranged on each of the second circuit board 10, the third circuit board 11 and the fourth circuit board 12 and respectively exposed out of the first correlation perforation 1-3-1, the second correlation perforation 1-4-1 and the third correlation perforation 3-1.
The weight 13 is placed on the shell 1 and comprises a weight body 13-1 and an RFID card 13-2, a groove is formed in the lower portion of the weight body 13-1, the RFID card 13-2 is cylindrical and is arranged in the groove in the lower portion of the weight body 13-1, different address information is arranged in the RFID card 13-2, and the RFID sensor 9-6 of the first circuit board 9 can acquire relevant address information, so that the weight value of the corresponding weight body can be judged.
The working platform 14 comprises a working base 14-1, a fixing plate 14-2, a receiving sensor circuit board 14-3, a camera assembly 14-4 and a tension meter 14-5, wherein the fixing plate 14-2 is fixedly installed with the working base 14-1 through bolts, the receiving sensor circuit board 14-3 is installed on the fixing plate 14-2 and is provided with the receiving sensors 14-3-1 with unlimited number, the receiving sensor 14-3-1 can receive signals emitted by a first correlation sensor 10-1 or a fourth correlation sensor 9-5 on a mechanical sliding block after being electrified so as to judge the sliding distance and speed of the mechanical sliding block, the camera assembly 14-4 is erected at the rear end of the working base 14-1 and can carry out video identification and recording on the movement information of the mechanical sliding block on the working platform 14 and the tension meter 14-5, the tension meter 14-5 is connected with the drag hook 2 of the mechanical slide block and can pull the mechanical slide block to move forwards.
When the multifunctional retractor is in use, a user uses external equipment to hook the retractor 2, if in a physical experiment, a tension meter is required to hook the slider, a first motion plane 1-3 and a second motion plane 1-4 can be selected, one surface of the cover plate 3 is in contact with the external plane, and then the mechanical slider is pulled to move forwards. And when the sliding block moves at a constant speed, the reading of the tension meter is recorded, so that the tension of the mechanical sliding block when the mechanical sliding block moves at a constant speed is obtained. When a load is needed, a weight, such as a weight 13, is placed on the object stage 1-2, and then the dynamic sliding block is pulled.
On the one hand, if the user draws the dynamic slider by using the tension meter 14-5, the draw hook 2 receives certain pulling force, the pulling force is transmitted to the gravity sensor 6, the gravity sensor 6 transmits related pulling force information to the first circuit board 9, the gravity sensor 6 is the pulling force of the tension meter, the first circuit board 9 transmits signals to an external device through Bluetooth or wifi for storage and analysis, and the real-time pulling force value of the tension meter 14-5 can be judged through the analysis of the external device.
On the other hand, when the user pulls the mechanical slider, if the first moving plane 1-3 contacts with the external plane, the sensor signal emitted by the fourth correlation sensor 9-5 is received by a series of receiving sensors 14-3-1 on the receiving sensor circuit board 14-3, the receiving sensor 14-3-1 can judge the moving track of the slider according to the speed of the received signal and analyze the received signal by the receiving sensor circuit board 14-3, the moving speed, the moving time and the moving distance of the slider can be monitored, meanwhile, the first circuit board 9 transmits the signal to the external device for storage and analysis by Bluetooth or wifi, and by the analysis of the external device, the surface of the mechanical slider can be judged to contact with the working platform 14, the pulling force of the tension meter can be judged, and whether the operation of the operator meets the standard or not, whether the operation of the operator is qualified or not can be judged, in a specific physical experiment examination, the corresponding experiment scores can be directly given to students on external equipment according to the operation of the students, whether the operation of the operator meets the specification or not can be judged, and the real-time monitoring and intelligent scoring of the mechanical slider in the physical experiment are realized.
It is required to provide that, on an operation display screen of the external device, when a user operates the mechanical slider, the background can monitor which sliding surface of the slider is in contact with an external plane in real time, can judge the movement track of the slider, can monitor the movement speed, the movement time and the movement distance of the slider, and can also detect the weight of the weight 13 on the object stage 1-2. When the user operation is finished, the experimental score of the user operation can be given in real time according to the set scoring standard of the background of the external equipment. If the user disagrees with the score, the relevant data of the operation process at that time can be called back on the external equipment, so as to judge whether the misjudgment result exists or not through data monitoring.
It is proposed that the resetting of the first circuit board 9 of the slider can be achieved by pushing the reset button 9-3 of the first circuit board 9 with a sharp object through the reset hole 1-5-1 when the slider is in a crash condition.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a physics experiment mechanics slider which characterized in that: the device comprises a shell, a draw hook, a cover plate, a first connecting plate, a second connecting plate, a gravity sensor, a battery pressing plate, a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a weight and a working platform;
the drag hook install in one side of shell, the bottom of shell is located to the apron lid, first connecting plate is connected with the upper portion of shell, the one end of second connecting plate links together with the medial surface of shell, the other end is connected with gravity sensor, gravity sensor's the other end and drag hook fixed assembly, the battery passes through the battery clamp plate to be fixed on first connecting plate, first circuit board, second circuit board, third circuit board, fourth circuit board are fixed respectively on four faces in the inboard of shell, the weight is placed on the shell.
2. The physical experiment mechanical slide block as claimed in claim 1, wherein: the shell comprises a drag hook mounting position, an object stage, a first moving plane, a second moving plane, a third plane and a cover plate mounting position; the drag hook installation position is a breach on the shell, the objective table is concave, first motion plane is a side of shell, and the middle part is equipped with first pair of perforation, the second motion plane is located the other side of shell, and the middle part is equipped with the second and is to the perforation, the third plane is the back of shell, including the reset hole, the hole that charges, the light trap, apron installation position is used for the fixed mounting of bolt and apron.
3. The physical experiment mechanical slide block as claimed in claim 1, wherein: the draw hook is embedded into the draw hook mounting position of the shell, is in non-contact with the shell, is fixedly assembled with the gravity sensor through a bolt, and is provided with a circular notch at the front end.
4. The physical experiment mechanical slide block as claimed in claim 1, wherein: the cover plate is arranged at the bottom of the shell and fixedly connected with the shell through a cover plate mounting position, and a third pair of perforation holes are formed in the middle of the cover plate.
5. The physical experiment mechanical slide block as claimed in claim 1, wherein: the first connecting plate is in a flat plate shape and is connected with the upper part of the shell; the second connecting plate is L-shaped, one end of the second connecting plate is connected with the inner side face of the shell, and the other end of the second connecting plate is connected with the gravity sensor; one end of the gravity sensor is connected with the second connecting plate, and the other end of the gravity sensor is connected with the drag hook and electrically connected with the first circuit board.
6. The physical experiment mechanical slide block as claimed in claim 1, wherein: the battery is arranged at the lower part of the first connecting plate and is electrically connected with the first circuit board; the battery pressing plate is U-shaped and presses the battery on the first connecting plate through the bolt.
7. The physical experiment mechanical slide block as claimed in claim 1, wherein: the utility model discloses a radio frequency identification device, including shell, first circuit board, second circuit board, third circuit board, fourth circuit board electricity is connected, including the base plate, charging socket, reset button, pilot lamp, fourth correlation sensor, the RFID inductor, the base plate is the base member of first circuit board, charging socket is connected with the battery electricity, reset button locates the lower part of first circuit board, fourth correlation sensor welding is on first circuit board, the RFID sensor welding is on first circuit board.
8. The physical experiment mechanical slide block as claimed in claim 1, wherein: the second circuit board is arranged on the back face of the second moving plane, the third circuit board is arranged on the back face of the first moving plane, the fourth circuit board is fixed on the cover plate, and the second circuit board, the third circuit board, the fourth circuit board and the first circuit board are electrically connected.
9. The physical experiment mechanical slide block as claimed in claim 1, wherein: the weight is placed on the shell and comprises a weight body and an RFID card, wherein a groove is formed in the lower portion of the weight body, and the RFID card is cylindrical and is arranged in the groove in the lower portion of the weight body.
10. The physical experiment mechanical slide block as claimed in claim 1, wherein: the working platform comprises a working base, a fixing plate, a receiving sensor circuit board, a camera assembly and a tension meter, wherein the fixing plate is fixedly installed together with the working base through a bolt, the receiving sensor circuit board is installed on the fixing plate, the camera assembly is erected at the rear end of the working base, and the tension meter is connected with a drag hook of a mechanical slider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044097.1A CN113129709A (en) | 2020-01-15 | 2020-01-15 | Physical experiment mechanics slider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044097.1A CN113129709A (en) | 2020-01-15 | 2020-01-15 | Physical experiment mechanics slider |
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| CN113129709A true CN113129709A (en) | 2021-07-16 |
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| CN202010044097.1A Pending CN113129709A (en) | 2020-01-15 | 2020-01-15 | Physical experiment mechanics slider |
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