CN112216189A - Physics experiment mechanics tensiometer - Google Patents
Physics experiment mechanics tensiometer Download PDFInfo
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- CN112216189A CN112216189A CN201910615204.9A CN201910615204A CN112216189A CN 112216189 A CN112216189 A CN 112216189A CN 201910615204 A CN201910615204 A CN 201910615204A CN 112216189 A CN112216189 A CN 112216189A
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- 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
The invention discloses a mechanical tension meter for physical experiments, which relates to the field of physical experiments. The system realizes real-time monitoring and intelligent operation of the whole mechanical device, greatly improves the examination efficiency of physical experiments, reduces repeated and monotonous scoring work of teachers, and reduces the possibility of score misjudgment.
Description
The technical field is as follows:
the invention relates to a mechanical tension meter for a physical experiment, and belongs to the technical field of physical experiments.
Background art:
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.
The tension meter is a mechanical instrument for measuring tension, has the advantages of high precision, easy operation and convenient carrying, needs to use a mechanical tension meter to pull an external object in a physical experiment mechanical experiment, and obtains the tension value by reading the numerical value on the 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.
Most of the existing mechanical tension meter experiments have the following problems: 1. in a physical experiment mechanical examination, a teacher needs to observe the operation of students to give experiment scores, so that the scoring efficiency is low, and the possibility of misjudgment exists; 2. in a physical experiment mechanical test, whether the pull piece returns to the original point position can be judged only by human eyes, and the pull piece cannot be detected by an intelligent method; 3. in a physical experiment mechanical examination, the tension value of a student operating a tension meter can only be judged by human eyes and cannot be detected by an intelligent method.
The invention content is as follows:
aiming at the problems, the invention aims to provide a physical experiment mechanical device which has high intelligent degree, real-time monitoring, reliable data and simple operation, can monitor the tension value in real time, store and analyze the tension value and give an experiment score in real time.
The invention relates to a physical experiment mechanics tensiometer, which comprises a shell, a pull ring, a dial, a pull tab, a drag hook, a spring mounting block, a gravity sensor, a connecting block, a battery, a circuit board, a wireless induction coil, a cover plate and a magnet, wherein the shell is provided with a pull ring mounting hole, a correlation sensor mounting hole, a connecting block mounting hole, a wire clamping groove, a sliding groove and a reset hole, the pull ring mounting hole is a circle center through hole and is positioned at one end of the shell, the pull ring is mounted in the pull ring mounting hole, the dial is mounted in the sliding groove of the shell, the pull tab is arranged below the dial, the drag hook is mounted at one end of the pull tab, the spring is mounted at the other end of the pull tab, one end of the spring is hooked on the spring mounting block, one end of the spring mounting block is fixedly connected with the gravity sensor, the below of pulling-on piece is provided with battery and circuit board, and the battery is connected with the circuit board, and the circuit board is connected with gravity sensor electricity, and wireless induction coil is located the top of circuit board, and is connected with the circuit board electricity, and the below of shell is provided with the apron, and the apron is rectangle structural design, and the apron passes through the bolt and is in the same place with shell fixed assembly, and the lower part of apron is provided with the recess, installs magnet in the recess.
Preferably, the shell is the center of the whole tension meter, is in a cuboid shape and has a certain thickness, and the shell plays a role in beautifying and supporting and connecting other parts.
Preferably, the correlation sensor mounting hole is designed to be a semicircular structure and is mainly used for mounting the correlation sensor on the circuit board, and the wire clamping groove is an inward concave groove and is mainly used for mounting a cable on the circuit board.
Preferably, the pull ring is made of metal materials and is of an annular structure, the pull ring is arranged in the pull ring mounting hole, and fingers can pull the tension meter by pulling the pull ring.
As preferred, the calibrated scale include the calibrated scale body, the breach, the original point, the scale mark layer, tensile force numerical value and horizontal bar are protruding, the calibrated scale body is the rectangle structure, the material is harder material, concrete material is not limited, the middle part of calibrated scale body is provided with the breach, the breach is the rectangle opening, it slides above to make the pulling-on piece, the original point is the initial original point of tensiometer, the indicator plate on the pulling-on piece just is in this position behind the original point is returned to the tensiometer, the both sides of breach are provided with the scale mark layer respectively, and be array arrangement, one side of scale mark layer is provided with tensile force numerical value, and evenly arrange by little to big, the calibrated scale can have the slip of certain distance in the spout of shell, the back upper end of calibrated scale body is provided.
Preferably, the pulling-on piece on be provided with drag hook mounting hole, instruction piece and spring mounting hole, the drag hook mounting hole is used for installing the drag hook, indicates the piece and the assembly back of tensiometer, is located the top of calibrated scale, initial position point to the original point, the spring mounting hole is provided with two, is in the same place with the spring assembly.
Preferably, the draw hook is made of metal materials and is in a hook shape, the upper end of the draw hook is assembled on the pulling piece, and the lower end of the draw hook can pull up a heavy object with certain weight.
Preferably, the spring is spiral and has certain elasticity, and can be stretched, one end of the spring is hooked on the spring mounting block, and the other end of the spring is screwed into the spring mounting hole on the pulling piece.
Preferably, the gravity sensor is a core component of the whole tension meter, is electrically connected with the circuit board, and can identify the magnitude of the tension force through the analysis and processing of background software when the tension force is transmitted to the gravity sensor.
Preferably, the connecting block is of an L-shaped structure, a screw hole is formed in the connecting block, one end of the connecting block is connected with the gravity sensor through a screw, and the other end of the connecting block is fixedly connected with the shell to play a role in fixing the gravity sensor.
Preferably, the circuit board is of a rectangular structural design and comprises a base plate, two correlation sensors, a reset button and a circuit board screw hole, the base plate 11-1 is a base body of the circuit board, other electronic components are welded on the base plate, the two correlation sensors are symmetrically arranged and are respectively installed in the correlation sensor installation holes in the shell, whether an object exists in the front of the base plate can be judged, whether an indication sheet on the pull sheet returns to the original position is mainly judged, signal logic judgment is further made, the reset button is located on the lower portion of the circuit board, the reset button is pressed through the reset hole in the shell of the tension meter and can reset the whole tension meter, the circuit board screw hole is used for fixedly assembling a bolt and the shell, and electric signals acquired by the circuit board can be transmitted to external equipment through Bluetooth or wifi.
Preferably, the magnet has certain magnetism, is arranged in the groove of the cover plate, and can judge whether the tension meter is at a specified position when the tension meter is put back to the original position.
The invention has the beneficial effects that:
1. in the physical experiment mechanical examination, after a teacher only needs to give examination contents to students, the students operate related devices, then the tensiometer transmits data to the background processing equipment through Bluetooth or wifi, the real-time tension value information collected by the background equipment can be stored on the equipment on one hand, on the other hand, the device can be compared with the read tension value input into the device by the student to judge whether the reading of the student is accurate, therefore, whether the operation of the student is accurate or not and whether the score of each step can be obtained or not can be judged from the background, after the student submits, the examination is finished, the score of the student examination can be known immediately, so that the real-time monitoring and intelligent operation of the whole mechanical device are realized, the examination efficiency of a physical experiment is greatly improved, repeated and monotonous scoring work of teachers is reduced, and the possibility of score misjudgment is reduced;
2. in the mechanical examination of the physical experiment, whether the initial position of the tension meter returns to the original point is judged by judging whether the correlation sensor on the circuit board has a signal or not, so that whether the operation of the student meets the requirement or not can be judged, and therefore the score of the physical experiment is given through a background program, and the traditional method of giving the score by naked eyes is replaced;
3. the tension meter intelligently upgrades the tension meter of the mechanical experiment without changing the appearance and the structure of the traditional physical experiment tension meter, achieves the purpose of intelligent monitoring, and does not influence the steps and habits of students for operating components after optimization;
4. the tension meter adopts the gravity sensor to read and identify the tension value, has the characteristics of high precision and high sensitivity of identifying the tension value, and can transmit the acquired data to external equipment through Bluetooth or wifi;
5. the tension meter is provided with the rechargeable battery, so that the circuit board can be powered, the mode that an external cable is needed to power the circuit board is eliminated, and the tension meter can be wirelessly charged by the wireless induction coil;
6. the tension meter is provided with the magnet, and through magnetic induction, when an operator puts the tension meter back to the original position, the tension meter can be judged whether to put the tension meter back to the original position after the student operates the tension meter.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the backside structure of the present invention;
FIG. 3 is a schematic view of the mounting structure of the circuit board and the wireless induction coil according to the present invention;
FIG. 4 is an exploded view of the present invention;
FIG. 5 is a schematic view of the internal structure of the present invention;
FIG. 6 is a schematic view of the internal structure of the housing of the present invention;
FIG. 7 is a schematic view showing the construction of the dial in the present invention;
FIG. 8 is a back side view of the dial of the present invention;
FIG. 9 is a schematic view of the structure of a pull tab of the present invention;
FIG. 10 is a schematic view of the structure of the circuit board of the present invention;
fig. 11 is a schematic view of the usage state of the present invention.
1-a housing; 1-1-a pull ring mounting hole; 1-2-correlation sensor mounting holes; 1-3-connecting block mounting holes; 1-4-wire clamping groove; 1-5-chute; 1-6-reset hole; 2-a pull ring; 3-a dial scale; 3-1-dial body; 3-2-notch; 3-3-origin; 3-4-a scale layer; 3-5-pull value; 3-6-the horizontal bar is convex; 4-pulling the piece; 4-1-a hook mounting hole; 4-2-indicator piece; 4-3-spring mounting holes; 5, pulling a hook; 6-a spring; 7-a spring mounting block; 8-a gravity sensor; 9-connecting blocks; 10-a battery; 11-a circuit board; 11-1-a substrate; 11-2-correlation sensor; 11-3-reset button; 11-4-circuit board screw holes; 12-a wireless induction coil; 13-a cover plate; 14-magnet.
The specific implementation mode is as follows:
as shown in fig. 1 to 11, the following technical solutions are adopted in the present embodiment: the device comprises a shell 1, a pull ring 2, a dial 3, a pull sheet 4, a drag hook 5, a spring 6, a spring mounting block 7, a gravity sensor 8, a connecting block 9, a battery 10, a circuit board 11, a wireless induction coil 12, a cover plate 13 and a magnet 14, wherein the shell 1 is provided with a pull ring mounting hole 1-1, a correlation sensor mounting hole 1-2, a connecting block mounting hole 1-3, a wire clamping groove 1-4, a sliding groove 1-5 and a reset hole 1-6, wherein the pull ring mounting hole 1-1 is a circle center through hole and is positioned at one end of the shell 1, the pull ring 2 is mounted in the pull ring mounting hole 1-1, the dial 3 is mounted in the sliding groove 1-5 of the shell 1, the pull sheet 4 is arranged below the dial 3, the drag hook 5 is mounted at one end of the pull sheet 4, the spring 6 is mounted at the other end of the, one end of the spring mounting block 7 is fixedly connected with the gravity sensor 8, the gravity sensor 8 is connected with the connecting block 9 through screws, one end of the connecting block 9 is fixed in a connecting block mounting hole 1-3 on the shell 1 through screws, a battery 10 and a circuit board 11 are arranged below the pulling piece 4, the battery 10 is connected with the circuit board 11 and has certain electric quantity, other components can be powered through the circuit board 11, the circuit board 11 is electrically connected with the gravity sensor 8, the wireless induction coil 12 is positioned above the circuit board 11 and is electrically connected with the circuit board 11, can be through the operation of charging to battery 10 of outside wireless charging coil, the below of shell 1 is provided with apron 13, and apron 13 is rectangle structural design, and apron 13 is in the same place through bolt and shell 1 fixed Assembly, and the lower part of apron 13 is provided with the recess, installs magnet 14 in the recess.
The shell 1 is a central pivot of the whole tension meter, is cuboid in shape and has a certain thickness, and plays a role in beautifying and supporting and connecting other parts; the correlation sensor mounting hole 1-2 is designed in a semicircular structure and is mainly used for mounting the correlation sensor 11-2 on the circuit board 11, and the wire clamping groove 1-4 is an inward concave groove and is mainly used for mounting a cable on the circuit board 11; the pull ring 2 is made of metal materials, is of an annular structure and is arranged in the pull ring mounting hole 1-1, and a finger can pull the tension meter by pulling the pull ring 2; the dial 3 comprises a dial body 3-1, a notch 3-2, an original point 3-3, a scale mark layer 3-4, a tension numerical value 3-5 and a cross bar bulge 3-6, the dial body 3-1 is of a rectangular structure and is made of a harder material, the specific material is not limited, the notch 3-2 is arranged in the middle of the dial body 3-1, the notch 3-2 is a rectangular opening, so that the pull sheet 4 slides above, the original point 3-3 is the initial original point of the tension meter, an indicator sheet on the pull sheet 4 is just at the position after the tension meter returns to the original point, the scale mark layers 3-4 are respectively arranged on two sides of the notch 3-2 and are arranged in an array manner, the tension numerical values 3-5 are arranged on one side of the scale mark layers 3-4 and are evenly arranged from small to large, the dial 3 can slide in the sliding grooves 1-5 of the shell 1 at a certain distance, the upper end of the back of the dial body 3-1 is provided with a horizontal bar bulge 3-6; the pull sheet 4 is provided with a drag hook mounting hole 4-1, an indication sheet 4-2 and a spring mounting hole 4-3, the drag hook mounting hole 4-1 is used for mounting a drag hook 5, the indication sheet 4-2 is arranged above the dial 3 after being assembled with the tension meter, the initial position points to the original point 3-3, and two spring mounting holes 4-3 are arranged and assembled with the spring 6; the draw hook 5 is made of metal materials and is in a hook shape, the upper end of the draw hook is assembled on the pull piece 4, and the lower end of the draw hook can pull a heavy object with certain weight; the spring 6 is spiral and has certain elasticity, and can be stretched, one end of the spring is hooked on the spring mounting block 7, and the other end of the spring is screwed into the spring mounting hole 4-3 on the pulling piece 4; the gravity sensor 8 is a core component of the whole tension meter, is electrically connected with the circuit board 11, and can identify the tension by analyzing and processing through background software when tension is transmitted to the gravity sensor 8; the connecting block 9 is of an L-shaped structure, a screw hole is formed in the connecting block 9, one end of the connecting block is connected with the gravity sensor 8 through a screw, and the other end of the connecting block is fixedly connected with the shell 1 to play a role in fixing the gravity sensor 8; the circuit board 11 is designed in a rectangular structure, the circuit board 11 comprises a substrate 11-1, an opposite-jet sensor 11-2, a reset button 11-3 and a circuit board screw hole 11-4, the substrate 11-1 is a base body of the circuit board 11, other electronic components are welded on the substrate 11-1, the opposite-jet sensor 11-2 is symmetrically arranged and respectively installed in an opposite-jet sensor installation hole 1-2 on the shell 1, whether an object exists in front of the opposite-jet sensor installation hole can be judged, the opposite-jet sensor installation hole is mainly used for judging whether an indication sheet 4-2 on a pull sheet 4 returns to the original position or not, further signal logic judgment is made, the reset button 11-3 is positioned at the lower part of the circuit board 11, the reset button 11-3 can be pressed down through a reset hole 1-6 of the tension meter shell 1 to reset the whole tension, the circuit board screw hole 11-4 is used for fixedly assembling a bolt and the shell 1, and an electric signal acquired by the circuit board 11 can be transmitted to external equipment through Bluetooth or wifi; the magnet 14 has certain magnetism and is arranged in the groove of the cover plate 13, so that whether the tension meter is at a designated position or not can be judged when the tension meter is put back to the original position.
When the specific embodiment works, the electric quantity of the battery 10 is checked, the electric quantity can meet the use time, in the use process, a user observes whether the position of the indicating sheet 4-2 on the pulling sheet 4 is aligned with the original point 3-3 on the dial 3 or not, if the position of the indicating sheet 4-2 on the pulling sheet 4 is not aligned with the original point 3-3 on the dial 3, the moving dial 3 is adjusted to slide up and down along the sliding groove 1-5 on the shell 1, finally, the position of the indicating sheet 4-2 on the pulling sheet 4 is aligned with the original point 3-3 on the dial 3, then, the pulling hook 5 is used for hooking an object to be pulled, the pulling ring 2 is held by a hand, then, the pulling force meter is placed horizontally and pulled forwards, so that the object is pulled forwards, at the moment, the indicating sheet 4-2 also slides on the dial 3, the, this portion is the pull force value observed by the user.
When a user adjusts and moves the dial 3 to finally align the position of the indicating sheet 4-2 on the pulling sheet 4 with the origin 3-3 on the dial 3, the opposite-direction sensor 11-2 on the circuit board 11 judges whether the front part of the opposite-direction sensor is provided with the cross bar bulge 3-6 or not, if so, the indicating sheet 4-2 is aligned with the origin 3-3, so that whether the indicating sheet 4-2 returns to the origin 3-3 or not can be judged from the background, when the user pulls an external object by using the tension meter, because the drag hook 5, the pulling sheet 4, the spring 6, the spring mounting block 7 and the gravity sensor 8 are connected into a whole, the pulling force pulled by the drag hook 5 can be transmitted to the gravity sensor 8, the pulling force value signal acquired by the gravity sensor 8 is transmitted to the circuit board 11, and the circuit board 11 transmits the signal to an external device for storage and analysis through Bluetooth or wifi, through the analysis of external equipment, can judge real-time pulling force value, can judge whether the operation of operator accords with the standard, can judge whether the operation of operator is qualified, in concrete physical experiment examination, can directly come to correspond the experiment score for the student according to student's operation on the external equipment, realized that the real time monitoring and the intelligence of physics experiment mechanics tensiometer are graded.
According to the specific embodiment, on the operation display screen of the external equipment, when a user operates the tension meter, the background can monitor the real-time tension value in real time, the user can see the tension value of the external tension meter through eyes, data input can be carried out on the operation display screen, the background can compare the tension value input by the user with the tension value obtained from the gravity sensor 8, when the user finishes operation, the experimental score of the operation of the user can be given in real time according to the set scoring standard of the background of the external equipment, and if the user disagrees the score, the tension value of the operation process at that time can be called back on the external equipment, so that whether the score is judged by mistake or not is judged through data monitoring.
In the embodiment, when the tension meter is in a dead halt state, the reset button 11-3 on the circuit board 11 can be pressed down by a sharp object penetrating through the reset hole 1-6, so that the tension meter is reset.
In the physical experiment mechanical examination, a teacher only needs to give examination contents to students, and then the students operate related devices, then the tensiometer transmits data to the background processing equipment through Bluetooth or wifi, the real-time tension value information collected by the background equipment can be stored on the equipment on one hand, on the other hand, the device can be compared with the read tension value input into the device by the student to judge whether the reading of the student is accurate, therefore, whether the operation of the student is accurate or not and whether the score of each step can be obtained or not can be judged from the background, after the student submits, the examination is finished, the score of the student examination can be known immediately, so that the real-time monitoring and intelligent operation of the whole mechanical device are realized, the examination efficiency of a physical experiment is greatly improved, repeated and monotonous scoring work of teachers is reduced, and the possibility of score misjudgment is reduced; in the mechanical examination of the physical experiment, whether the initial position of the tension meter returns to the original point is judged by judging whether the correlation sensor on the circuit board has a signal or not, so that whether the operation of the student meets the requirement or not can be judged, and therefore the score of the physical experiment is given through a background program, and the traditional method of giving the score by naked eyes is replaced; the tension meter intelligently upgrades the tension meter of the mechanical experiment without changing the appearance and the structure of the traditional physical experiment tension meter, achieves the purpose of intelligent monitoring, and does not influence the steps and habits of students for operating components after optimization; the tension meter adopts the gravity sensor to read and identify the tension value, has the characteristics of high precision and high sensitivity of identifying the tension value, and can transmit the acquired data to external equipment through Bluetooth or wifi; the tension meter is provided with the rechargeable battery, so that the circuit board can be powered, the mode that an external cable is needed to power the circuit board is eliminated, and the tension meter can be wirelessly charged by the wireless induction coil; the tension meter is provided with the magnet, and when an operator puts the tension meter back to the original position, the tension meter can be judged whether to put the tension meter back to the original position or not after the student operates the tension meter through magnetic induction.
The foregoing shows and describes the general principles and broad features of the present invention and 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 (9)
1. The utility model provides a physics experiment mechanics tensiometer which characterized in that: the magnetic induction type pull ring comprises a shell (1), a pull ring (2), a dial (3), a pull sheet (4), a drag hook (5), a spring (6), a spring mounting block (7), a gravity sensor (8), a connecting block (9), a battery (10), a circuit board (11), a wireless induction coil (12), a cover plate (13) and a magnet (14), wherein the shell (1) is provided with a pull ring mounting hole (1-1), a correlation sensor mounting hole (1-2), a connecting block mounting hole (1-3), a wire clamping groove (1-4), a sliding groove (1-5) and a reset hole (1-6), the pull ring mounting hole (1-1) is a circle center through hole and is positioned at one end of the shell (1), the pull ring (2) is mounted in the pull ring mounting hole (1-1), the dial (3) is mounted in the sliding groove (1-5) of the shell (1, a pulling sheet (4) is arranged below the dial (3), a drag hook (5) is arranged at one end of the pulling sheet (4), a spring (6) is arranged at the other end of the pulling sheet (4), one end of the spring (6) is hooked on a spring mounting block (7), one end of the spring mounting block (7) is fixedly connected with a gravity sensor (8), the gravity sensor (8) is connected with a connecting block (9) through screws, one end of the connecting block (9) is fixed in a connecting block mounting hole (1-3) on the shell (1) through screws, a battery (10) and a circuit board (11) are arranged below the pulling sheet (4), the battery (10) is connected with the circuit board (11), the circuit board (11) is electrically connected with the gravity sensor (8), a wireless induction coil (12) is positioned above the circuit board (11) and is electrically connected with the circuit board (11), a cover plate (13) is arranged below the shell (1), the cover plate (13) is in a rectangular structural design, the cover plate (13) is fixedly assembled with the shell (1) through bolts, a groove is formed in the lower portion of the cover plate (13), and a magnet (14) is installed in the groove.
2. A physical laboratory mechanical tensiometer according to claim 1 wherein: the shell (1) is the center of the whole tension meter and is in a cuboid shape, the correlation sensor mounting hole (1-2) is in a semicircular structure design, and the wire clamping groove (1-4) is an inward concave groove position.
3. A physical laboratory mechanical tensiometer according to claim 1 wherein: the pull ring (2) is made of metal materials, is of an annular structure and is arranged in the pull ring mounting hole (1-1).
4. A physical laboratory mechanical tensiometer according to claim 1 wherein: the dial scale comprises a dial scale body (3-1), notches (3-2), an original point (3-3), a scale line layer (3-4), tension numerical values (3-5) and cross bar protrusions (3-6), the dial scale body (3-1) is of a rectangular structure, the notches (3-2) are arranged in the middle of the dial scale body (3-1), the notches (3-2) are rectangular openings, the scale line layers (3-4) are arranged on two sides of the notches (3-2) respectively and are arranged in an array mode, the tension numerical values (3-5) are arranged on one side of the scale line layer (3-4) and are evenly arranged from small to large, and the cross bar protrusions (3-6) are arranged at the upper end of the back of the dial scale body (3-1).
5. A physical laboratory mechanical tensiometer according to claim 1 wherein: the pulling piece (4) is provided with a drag hook mounting hole (4-1), an indication piece (4-2) and a spring mounting hole (4-3).
6. A physical laboratory mechanical tensiometer according to claim 1 wherein: the draw hook (5) is made of metal materials and is in a hook shape, and the upper end of the draw hook is assembled on the pulling piece (4).
7. A physical laboratory mechanical tensiometer according to claim 1 wherein: the spring (6) is spiral, one end of the spring is hooked on the spring mounting block (7), and the other end of the spring is screwed into the spring mounting hole (4-3) on the pulling piece (4).
8. A physical laboratory mechanical tensiometer according to claim 1 wherein: connecting block (9) be L type structure, be provided with the screw on connecting block (9), its one end passes through screwed connection with gravity sensor (8), the other end and shell (1) fixed connection.
9. A physical laboratory mechanical tensiometer according to claim 1 wherein: the circuit board (11) is of a rectangular structural design, the circuit board (11) comprises a base plate (11-1), correlation sensors (11-2), a reset button (11-3) and circuit board screw holes (11-4), the base plate (11-1) is a base body of the circuit board (11), other electronic components are welded on the base plate (11-1), and the correlation sensors (11-2) are symmetrically distributed and respectively installed in correlation sensor installation holes (1-2) in the shell (1).
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| CN201910615204.9A CN112216189A (en) | 2019-07-09 | 2019-07-09 | Physics experiment mechanics tensiometer |
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| CN201910615204.9A CN112216189A (en) | 2019-07-09 | 2019-07-09 | Physics experiment mechanics tensiometer |
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