CN109712488B - Portable physical mechanics experimental apparatus - Google Patents
Portable physical mechanics experimental apparatus Download PDFInfo
- Publication number
- CN109712488B CN109712488B CN201910034639.4A CN201910034639A CN109712488B CN 109712488 B CN109712488 B CN 109712488B CN 201910034639 A CN201910034639 A CN 201910034639A CN 109712488 B CN109712488 B CN 109712488B
- Authority
- CN
- China
- Prior art keywords
- hanging
- measuring arm
- hanging rope
- dynamometer
- angle measuring
- 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
- Force Measurement Appropriate To Specific Purposes (AREA)
- Instructional Devices (AREA)
Abstract
The invention discloses a portable physical mechanics experimental device, which belongs to the field of physical experimental devices, can enable the experimental operation of a parallelogram rule of a verification force to be simpler, more convenient and more accurate, and comprises a device main body, weights, a weight box, a single dynamometer and a double dynamometer; the device main body comprises a bottom basket, a handle and an experimental plate, one end of the experimental plate is movably connected with one side of the bottom basket, the shape of the experimental plate is matched with that of the bottom basket, a limiting block is arranged on the inner wall of the bottom basket, a storage chamber is arranged in the bottom basket and below the limiting block, weights are placed in a weight box, the weight box, a single dynamometer and a double dynamometer are placed in the storage chamber, and a hanging piece is arranged on the experimental plate; the invention has the advantages of simple structure, convenient and accurate experimental operation, convenient carrying, easy carrying and the like.
Description
Technical Field
The invention relates to the field of physical experiment devices, in particular to a portable physical mechanics experiment device.
Background
In the course of physics course study in high school, many experiments are needed to verify certain theories and guesses, such as verifying the parallelogram rule of force, exploring the relationship between the spring and the extension of the spring, researching the uniform variable speed linear motion, verifying the kinetic energy theorem, verifying the mechanical energy conservation theorem, and the like.
In the experiments of the force-verifying parallelogram rule, the experimental steps given in textbooks and demonstrated by teachers in class are as follows:
1. a square board is horizontally placed on the horizontal desktop, white paper is laid on the board, the white paper is fixed on the square board by a nail,
2. one end of the rubber strip is fixed on the point A on the board by a drawing pin, two strings are tied on the other end of the rubber strip, and the other ends of the strings are respectively tied with string sleeves.
3. Hooking the thin rope sleeve by two spring force gauges respectively, pulling the rubber strips at an angle mutually, and pulling the node to a certain position O
4. The position of the point O and the direction of the two strings are drawn with a pencil and the readings of the two spring force gauges are read and recorded.
5. Drawing a straight line on the white paper from the point O along the directions of the two strings by using a pencil and a graduated scale, drawing two forces F1 and F2 according to a certain scale, using the graduated scale and a triangular plate as parallelograms by taking F1 and F2 as adjacent sides, and using a diagonal line of the parallelogram passing through the point O as a resultant force F.
6. Using only one spring dynamometer, pulling the knot point of the rubber strip to the same position O through the string, reading and recording the reading of the spring dynamometer, and recording the stringIn the same direction, the force F is applied from point O by the same scale/Is shown in
Comparison F/The magnitude and direction of the resultant force F obtained by the parallelogram rule are equal to each other within the allowable range of experimental error.
The traditional experiment result has larger error, because of the elongation of the rubber strip, different stretching distances may exist in the two times of stretching with the same strength, and the drawing needs to be performed by adopting a manual pencil, so that the error exists, the operation is more complex, the operation is not simple and convenient enough, and more steps are needed.
Disclosure of Invention
In order to solve the existing problems, the invention provides the following technical scheme that the portable physical mechanics experiment device can enable the experiment operation of the parallelogram rule of the verification force to be simpler, more convenient and more accurate, and comprises a device main body, a weight box, a single dynamometer and a double dynamometer; the device main body comprises a bottom basket, a handle and an experimental plate, one end of the experimental plate is movably connected with one side of the bottom basket, the shape of the experimental plate is matched with that of the bottom basket, a limiting block is arranged on the inner wall of the bottom basket, a storage chamber is arranged in the bottom basket and below the limiting block, weights are placed in a weight box, the weight box, a single dynamometer and a double dynamometer are placed in the storage chamber, and a hanging piece is arranged on the experimental plate;
the double force measuring meter comprises a fixed force measuring meter, a movable force measuring meter, a hook and a protractor, the protractor comprises an angle scale, a first angle measuring arm and a second angle measuring arm, the first angle measuring arm is cylindrical, one end of the first angle measuring arm is connected with one end of the second angle measuring arm, a through hole is formed in the connection position, the other ends of the first angle measuring arm and the second angle measuring arm are respectively connected with the two ends of the angle scale, a slideway is arranged in the middle of the angle scale, the shape of the slideway is consistent with that of the angle scale, and the second angle measuring arm is communicated with the slideway;
the fixed dynamometer comprises a first hanging rope, a spring connected with the first hanging rope, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope is arranged in a first angle measuring arm in a penetrating mode;
the movable dynamometer comprises a second hanging rope, a spring connected with the second hanging rope, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein one end of the second hanging rope penetrates through the through hole, the other end of the second hanging rope penetrates through the slideway, and the second hanging rope can rotate along the slideway;
the tail ends of the first hanging rope and the second hanging rope are connected, and the tail ends of the first hanging rope and the second hanging rope are connected to the hook.
Preferably, the angle scale is of a circular arc structure, and the slide way is of a circular arc structure.
Further preferably, the angle between the first angle measuring arm and the second angle measuring arm is between 120 ° and 180 °.
Preferably, the weight is provided with a hanging ring used for being connected with the hook.
In a preferred embodiment of the invention, a plurality of weight cavities for placing weights are arranged in the weight box, branch pipes are arranged at the bottoms of the weight cavities, a communicating pipe is inserted at the bottom of the weight box, one end of the communicating pipe penetrates through the weight box and is in threaded connection with an air pump, one ends of the branch pipes are communicated with the communicating pipe, and the weight box further comprises a box cover.
Preferably, a sealing ring is arranged on the box cover.
In a preferred embodiment of the invention, the hanging pieces are hanging rods, the number of the hanging rods is two, and the hanging rods are uniformly provided with fixing blocks.
In a preferred embodiment of the present invention, the hanging member is a plurality of suckers, and the suckers are provided with hook rings.
Preferably, the shape of experiment board is the rectangle, the lower surface of experiment board is provided with the bracing piece, the quantity of bracing piece is two, the one end of bracing piece links to each other with the upper end of experiment board.
Further preferably, the lower end of the device body is provided with a non-slip mat.
The invention has the beneficial effects that:
1. the experiment board, the hanging piece and the weights are matched for use, so that the operation of the experiment for verifying the parallelogram rule theorem of force is more convenient; the experiment plate is erected, and the gravity of the weight is used as the effect of resultant force, so that the experiment effect is more accurate.
2. According to the invention, the double force meters are arranged and comprise the movable dynamometer, the fixed dynamometer and the protractor, so that the angle can be read quickly, simply and accurately, the experiment efficiency is improved, and the operation experiment is simpler and more convenient.
3. According to the invention, the device main body is arranged, the experiment board is skillfully arranged in the device main body, the storage chamber is formed below the experiment board, other articles required by the experiment can be placed in the storage chamber, and the lifting handle enables the device to be more convenient to carry and move.
4. The parallelogram rule theorem for verifying the force by operation is high in accuracy, and the difference of the elastic force of the rubber band and the drawing error are avoided.
5. The invention has the advantages of simple structure, convenient and accurate experimental operation, convenient carrying, easy carrying and the like.
Drawings
FIG. 1 is a left side view of the invention without experiment;
FIG. 2 is a right side view of the invention without experiment;
FIG. 3 is a front view of the experimental process of the present invention;
FIG. 4 is an enlarged view of the protractor in the dual force gauge of the present invention;
figure 5 is a schematic view of the configuration of the slideway of the protractor of the present invention;
reference numerals:
the device comprises a bottom basket-1, a handle-2, an experimental plate-3, a limiting block-4, a weight-5, a weight box-6, a weight cavity-601, a communicating pipe-602, an air pump-603, a box cover-604, a branch pipe-605, a single dynamometer-7, a double dynamometer-8, a fixed dynamometer-801, a first hanging rope-8011, a movable dynamometer-802, a second hanging rope-8021, a hook-803, a protractor-804, an angle scale-8041, a first angle scale arm-8042, a second angle scale arm-8043, a slideway-8045, a pendant-9 and an anti-skid pad-10.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
Example 1
As shown in fig. 1 to 5, a portable physical mechanics experiment device comprises a device body, weights 5, a weight box 6, a single dynamometer 7 and a double dynamometer 8; the device main body comprises a bottom basket 1, a handle 2 and an experimental plate 3, one end of the experimental plate 3 is movably connected with one side of the bottom basket 1, the shape of the experimental plate 3 is matched with that of the bottom basket 1, a limiting block 4 is arranged on the inner wall of the bottom basket 1, a storage chamber is arranged in the bottom basket 1 and below the limiting block 4, a weight 5 is placed in a weight box 6, the weight box 6, a single dynamometer 7 and a double dynamometer 8 are all placed in the storage chamber, and a hanging part 9 is arranged on the experimental plate 3; the hanging pieces 9 are hanging rods, the number of the hanging rods is two, and each hanging rod is evenly provided with eight fixing blocks.
The double force measuring meter 8 comprises a fixed force measuring meter 801, a movable force measuring meter 802, a hook 803 and a protractor 804, wherein the protractor 804 comprises an angle scale 8041, a first angle measuring arm 8042 and a second angle measuring arm 8043, the first angle measuring arm 8042 is cylindrical, one end of the first angle measuring arm 8042 is connected with one end of the second angle measuring arm 8043, a through hole is formed in the connection position, the other ends of the first angle measuring arm 8042 and the second angle measuring arm 8043 are respectively connected with two ends of the angle scale 8041, a slide 8045 is arranged in the middle of the angle scale 8041, the shape of the slide 8045 is consistent with that of the angle scale 8041, and the second angle measuring arm 8043 is communicated with the slide 8045;
the fixed dynamometer 801 comprises a first hanging rope 8011, a spring connected with the first hanging rope 8011, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope 8011 is arranged in a first angle measuring arm 8042 in a penetrating manner;
the movable dynamometer 802 comprises a second hanging rope 8021, a spring connected with the second hanging rope 8021, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, one end of the second hanging rope 8021 penetrates through the through hole, the other end of the second hanging rope 8021 penetrates through the slideway 8045, and the second hanging rope 8021 can rotate along the slideway 8045; the angle scale 8041 is of an arc-shaped structure, and the slide 8045 is of an arc-shaped structure.
The tail ends of the first hanging rope 8011 and the second hanging rope 8021 are connected, the tail ends of the first hanging rope 8011 and the second hanging rope 8021 are both connected to the hook 803, and the angle between the first angle measuring arm 8042 and the second angle measuring arm 8043 is 120 degrees;
the weight 5 is provided with a hanging ring connected with the hook 803.
Example 2
A portable physical mechanics experimental device comprises a device main body, weights 5, a weight box 6, a single dynamometer 7 and a double dynamometer 8; the device main body comprises a bottom basket 1, a handle 2 and an experiment plate 3, one end of the experiment plate 3 is movably connected with one side of the bottom basket 1, the shape of the experiment plate 3 is matched with that of the bottom basket 1, a limiting block 4 is arranged on the inner wall of the bottom basket 1, a storage chamber is arranged in the bottom basket 1 and below the limiting block 4, weights 5 are placed in a weight box 6, the weight box 6, a single dynamometer 7 and a double dynamometer 8 are all placed in the storage chamber, and 9 pendants are arranged on the experiment plate 3; the shape of experiment board 3 is the rectangle, the below one side of experiment board 3 is provided with bracing piece 301, the quantity of bracing piece 301 is two, the one end of bracing piece links to each other with the upper end of experiment board 3.
The double force measuring meter 8 comprises a fixed force measuring meter 801, a movable force measuring meter 802, a hook 803 and a protractor 804, wherein the protractor 804 comprises an angle scale 8041, a first angle measuring arm 8042 and a second angle measuring arm 8043, the first angle measuring arm 8042 is cylindrical, one end of the first angle measuring arm 8042 is connected with one end of the second angle measuring arm 8043, a through hole 8044 is arranged at the connection position, the other ends of the first angle measuring arm 8042 and the second angle measuring arm 8043 are respectively connected with two ends of the angle scale 8041, a slide 8045 is arranged in the middle of the angle scale 8041, the shape of the slide 8045 is consistent with that of the angle scale 8041, and the second angle measuring arm 8043 is communicated with the slide 8045;
the fixed dynamometer 801 comprises a first hanging rope 8011, a spring connected with the first hanging rope 8011, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope 8011 is arranged in a first angle measuring arm 8042 in a penetrating manner;
the movable dynamometer 802 comprises a second hanging rope 8021, a spring connected with the second hanging rope 8021, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, one end of the second hanging rope 8021 penetrates through the through hole, the other end of the second hanging rope 8021 penetrates through the slideway 8045, and the second hanging rope 8021 can rotate along the slideway 8045; the angle scale 8041 is of an arc-shaped structure, and the slide 8045 is of an arc-shaped structure.
The tail ends of the first hanging rope 8011 and the second hanging rope 8021 are connected, the tail ends of the first hanging rope 8011 and the second hanging rope 8021 are both connected to the hook 803, and the angle between the first angle measuring arm 8042 and the second angle measuring arm 8043 is 120 degrees;
the weight 5 is provided with a hanging ring connected with the hook 803.
The difference between this embodiment and embodiment 1 is that the pendant 9 is the sucking disc, and the quantity of sucking disc is 9, the sucking disc with the experiment board 3 is adsorbable and can be throw off, be provided with on the sucking disc and collude the ring.
Example 3
A portable physical mechanics experimental device comprises a device main body, weights 5, a weight box 6, a single dynamometer 7 and a double dynamometer 8; the device main body comprises a bottom basket 1, a handle 2 and an experimental plate 3, one end of the experimental plate 3 is movably connected with one side of the bottom basket 1, the shape of the experimental plate 3 is matched with that of the bottom basket 1, a limiting block 4 is arranged on the inner wall of the bottom basket 1, a storage chamber is arranged in the bottom basket 1 and below the limiting block 4, a weight 5 is placed in a weight box 6, the weight box 6, a single dynamometer 7 and a double dynamometer 8 are all placed in the storage chamber, and a hanging part 9 is arranged on the experimental plate 3; the hanging pieces 9 are hanging rods, the number of the hanging rods is two, and each hanging rod is evenly provided with eight fixing blocks.
The double force measuring meter 8 comprises a fixed force measuring meter 801, a movable force measuring meter 802, a hook 803 and a protractor 804, wherein the protractor 804 comprises an angle scale 8041, a first angle measuring arm 8042 and a second angle measuring arm 8043, the first angle measuring arm 8042 is cylindrical, one end of the first angle measuring arm 8042 is connected with one end of the second angle measuring arm 8043, a through hole is formed in the connection position, the other ends of the first angle measuring arm 8042 and the second angle measuring arm 8043 are respectively connected with two ends of the angle scale 8041, a slide 8045 is arranged in the middle of the angle scale 8041, the shape of the slide 8045 is consistent with that of the angle scale 8041, and the second angle measuring arm 8043 is communicated with the slide 8045;
the fixed dynamometer 801 comprises a first hanging rope 8011, a spring connected with the first hanging rope 8011, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope 8011 is arranged in a first angle measuring arm 8042 in a penetrating manner;
the movable dynamometer 802 comprises a second hanging rope 8021, a spring connected with the second hanging rope 8021, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, one end of the second hanging rope 8021 penetrates through the through hole, the other end of the second hanging rope 8021 penetrates through the slideway 8045, and the second hanging rope 8021 can rotate along the slideway 8045; the angle scale 8041 is of an arc-shaped structure, and the slide 8045 is of an arc-shaped structure.
The tail ends of the first hanging rope 8011 and the second hanging rope 8021 are connected, and the tail ends of the first hanging rope 8011 and the second hanging rope 8021 are connected to the hook 803; the weight 5 is provided with a hanging ring connected with the hook 803.
This embodiment is different from embodiment 1 in that the angle between the first angle measurement arm 8042 and the second angle measurement arm 8043 is 180 °.
Example 4
A portable physical mechanics experimental device comprises a device main body, weights 5, a weight box 6, a single dynamometer 7 and a double dynamometer 8; the device main body comprises a bottom basket 1, a handle 2 and an experimental plate 3, one end of the experimental plate 3 is movably connected with one side of the bottom basket 1, the shape of the experimental plate 3 is matched with that of the bottom basket 1, a limiting block 4 is arranged on the inner wall of the bottom basket 1, a storage chamber is arranged in the bottom basket 1 and below the limiting block 4, a weight 5 is placed in a weight box 6, the weight box 6, a single dynamometer 7 and a double dynamometer 8 are all placed in the storage chamber, and a hanging part 9 is arranged on the experimental plate 3; the hanging pieces 9 are hanging rods, the number of the hanging rods is two, and each hanging rod is evenly provided with 8 fixing blocks.
The double force measuring meter 8 comprises a fixed force measuring meter 801, a movable force measuring meter 802, a hook 803 and a protractor 804, wherein the protractor 804 comprises an angle scale 8041, a first angle measuring arm 8042 and a second angle measuring arm 8043, the first angle measuring arm 8042 is cylindrical, one end of the first angle measuring arm 8042 is connected with one end of the second angle measuring arm 8043, a through hole 8044 is arranged at the connection position, the other ends of the first angle measuring arm 8042 and the second angle measuring arm 8043 are respectively connected with two ends of the angle scale 8041, a slide 8045 is arranged in the middle of the angle scale 8041, the shape of the slide 8045 is consistent with that of the angle scale 8041, and the second angle measuring arm 8043 is communicated with the slide 8045;
the fixed dynamometer 801 comprises a first hanging rope 8011, a spring connected with the first hanging rope 8011, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope 8011 is arranged in a first angle measuring arm 8042 in a penetrating manner;
the movable dynamometer 802 comprises a second hanging rope 8021, a spring connected with the second hanging rope 8021, a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein one end of the second hanging rope 8021 penetrates through the through hole, the other end of the second hanging rope 8021 penetrates through the slideway 8045, and the second hanging rope 8021 can rotate along the slideway 8045; the angle scale 8041 is of an arc-shaped structure, and the slide 8045 is of an arc-shaped structure.
The tail ends of the first hanging rope 8011 and the second hanging rope 8021 are connected, the tail ends of the first hanging rope 8011 and the second hanging rope 8021 are both connected to the hook 803, and the angle between the first angle measuring arm 8042 and the second angle measuring arm 8043 is 120 degrees;
the weight 5 is provided with a hanging ring connected with the hook 803.
The embodiment is further improved on the basis of embodiment 1, the lower end of the device body is provided with a non-slip mat 10, and the non-slip mat 10 is made of rubber.
Example 5
As shown in fig. 1, this embodiment is further optimized on the basis of embodiment 4, and specifically is an improvement on a weight box 6, a plurality of weight cavities 601 are provided in the weight box 6, the shapes of the weight cavities 601 and the weights 5 are matched, the bottoms of the weight cavities 601 are provided with branch pipes 605, the bottom of the weight box 6 is inserted with a communication pipe 602, one end of the communication pipe 602 penetrates through the weight box 6 and is connected with an air pump 603 by a thread, one end of the branch pipe 605 is communicated with the communication pipe 602, the weight box 6 further includes a box cover 604, a seal ring is provided on the box cover 604, the device body is further provided with a cover, and the cover is matched with the bottom basket 1.
During the use, at first, open the lid, the pendant of pulling up pulls up experimental panel 3, guarantees that experimental panel 3 is vertical state, then opens bracing piece 301 and supports on stopper 4 on end basket 1 inner wall, and bracing piece 301 just can guarantee the fixed and stable of experimental panel 3's position like this.
Then, the weight box 6 is taken out, the air pump 603 is opened, and after the air pump 603 supplies air into the weight box 6, the box cover 604 of the weight box 6 is opened, and a weight 5 is taken out.
Then, the single load cell 7 is taken out, the single load cell 7 can be a precise spring load cell, the weight of one weight 5 is measured by the single load cell 7, the gravity F is memorized, then the double dynamometer 8 is taken out, the hanging ring fixed at the upper end of the dynamometer 801 is hung at one position of the hanging rod, and ensures that the hoisting ring is clamped on a fixed block of the hanging rod, ensures the stability of the fixed dynamometer 801, then, the previous weight 5 with the measured weight is hung on the hook 803, and the movable dynamometer 802 is slid to a certain angle theta, specifically, by sliding the second hanging rope 8021 in the slideway 8045 of the protractor 804, the angle between the first hanging line 8011 and the second hanging line 8021, i.e. the angle between the fixed dynamometer 801 and the movable dynamometer 802, then, the included angle is ensured to be unchanged, and the hanging ring at the upper end of the movable dynamometer 802 is hung on the hanging rod properly.In position, the hanging ring is clamped on a fixed block of the hanging rod, and then the readings F of the fixed dynamometer 801 and the movable dynamometer 802 are respectively read1And F2。
Then, the double dynamometer 8 can be retracted, the single dynamometer 7 and the double dynamometer 8 are placed back into the storage chamber of the bottom basket 1, the weight 5 is placed into the weight cavity 601 of the weight box 6, the box cover 604 is covered to ensure sealing, the air pump 603 is started, the air in the weight cavity 601 is discharged by the air pump 603 through the branch pipe 605 and the communicating pipe 602, and therefore contact oxidation between the weight 5 and the air can be prevented, and the weight box 6 is placed back into the weight cavity 601.
Finally, within the error range, mainly the error of the spring dynamometer, the correctness of the parallelogram law of force is verified, in particular by calculating and verifying the formula F2＝F1 2+F2 2+2F1F2correctness of cos θ.
The above embodiments only describe the best mode of use of the existing device, and similar common mechanical means are used to replace the elements in the present embodiment, or the combination of the above technical solutions falls into the protection scope.
Claims (10)
1. The utility model provides a portable physical mechanics experimental apparatus which characterized in that: comprises a device body, weights (5), a weight box (6), a single dynamometer (7) and a double dynamometer (8); the device main body comprises a bottom basket (1), a handle (2) and an experimental plate (3), one end of the experimental plate (3) is movably connected with one side of the bottom basket (1), the shape of the experimental plate (3) is matched with that of the bottom basket (1), a limiting block (4) is arranged on the inner wall of the bottom basket (1), a storage chamber is arranged in the bottom basket (1) and below the limiting block (4), weights (5) are placed in a weight box (6), the weight box (6), a single dynamometer (7) and a double dynamometer (8) are all placed in the storage chamber, and a hanging piece (9) is arranged on the experimental plate (3);
the double force measuring meter (8) comprises a fixed force measuring meter (801), a movable force measuring meter (802), a hook (803) and a protractor (804), wherein the protractor (804) comprises an angle scale (8041), a first angle measuring arm (8042) and a second angle measuring arm (8043), the first angle measuring arm (8042) is cylindrical, one end of the first angle measuring arm (8042) is connected with one end of the second angle measuring arm (8043), a through hole is formed in the connection position, the other ends of the first angle measuring arm (8042) and the second angle measuring arm (8043) are respectively connected with two ends of the angle scale (8041), a slide way (8045) is arranged in the middle of the angle scale (8041), the shape of the slide way (8045) is consistent with that of the angle scale (8041), and the second angle measuring arm (8043) is communicated with the slide way (8045);
the fixed dynamometer (801) comprises a first hanging rope (8011), a spring connected with the first hanging rope (8011), a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, wherein the first hanging rope (8011) penetrates through the first angle measuring arm (8042);
the movable dynamometer (802) comprises a second hanging rope (8021), a spring connected with the second hanging rope (8021), a pointer arranged at the lower end of the spring, a hanging ring connected with the upper end of the spring and a shell with a dial, one end of the second hanging rope (8021) penetrates through the through hole, the other end of the second hanging rope (8021) penetrates through the slideway (8045), and the second hanging rope (8021) can rotate along the slideway (8045);
the tail ends of the first hanging rope (8011) and the second hanging rope (8021) are connected, and the tail ends of the first hanging rope (8011) and the second hanging rope (8021) are connected to the hook (803).
2. The portable physical mechanical experiment device of claim 1, wherein: the angle scale (8041) is of an arc-shaped structure, and the slide way (8045) is of an arc-shaped structure.
3. A portable physical-mechanical experimental facility as claimed in claim 2, wherein: the angle between the first angle measuring arm (8042) and the second angle measuring arm (8043) is between 120 ° and 180 °.
4. The portable physical mechanical experiment device of claim 1, wherein: the weight (5) is provided with a hanging ring which is connected with the hook (803).
5. The portable physical mechanical experiment device of claim 4, wherein: be provided with a plurality of weight chamber (601) in weight box (6), the bottom in weight chamber (601) all is provided with branch pipe (605), peg graft in the bottom of weight box (6) and have communicating pipe (602), the one end of communicating pipe (602) runs through weight box (6) threaded connection and has air pump (603), the one end of branch pipe (605) all with communicating pipe (602) intercommunication, weight box (6) still include lid (604).
6. The portable physical mechanical experiment device of claim 5, wherein: and a sealing ring is arranged on the box cover (604).
7. The portable physical mechanical experiment device of claim 1, wherein: the hanging pieces (9) are hanging rods, the number of the hanging rods is two, and the hanging rods are evenly provided with fixing blocks.
8. The portable physical mechanical experiment device of claim 1, wherein: the hanging pieces (9) are suckers, the number of the suckers is a plurality, and hook rings are arranged on the suckers.
9. The portable physical mechanical experiment device of claim 1, wherein: the shape of experiment board (3) is the rectangle, the lower surface of experiment board (3) is provided with bracing piece (301), the quantity of bracing piece (301) is two, the one end of bracing piece links to each other with the upper end of experiment board (3).
10. The portable physical mechanical experiment device as claimed in any one of claims 1 to 9, wherein: the lower end of the device body is provided with an anti-skid pad (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034639.4A CN109712488B (en) | 2019-01-15 | 2019-01-15 | Portable physical mechanics experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034639.4A CN109712488B (en) | 2019-01-15 | 2019-01-15 | Portable physical mechanics experimental apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109712488A CN109712488A (en) | 2019-05-03 |
| CN109712488B true CN109712488B (en) | 2021-07-02 |
Family
ID=66261385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910034639.4A Active CN109712488B (en) | 2019-01-15 | 2019-01-15 | Portable physical mechanics experimental apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109712488B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1766355A (en) * | 1928-05-31 | 1930-06-24 | Central Scientific Co | Educational apparatus |
| CN201237848Y (en) * | 2008-01-29 | 2009-05-13 | 施瑞华 | Demonstration instrument for parallelogram principle validation |
| CN204904661U (en) * | 2015-09-01 | 2015-12-23 | 张嘉玮 | High school's experiments of machanics device |
| CN105390051B (en) * | 2015-11-16 | 2017-10-03 | 浙江工业大学之江学院 | Portable assembly rational mechanics teaching aid |
| CN206991614U (en) * | 2017-05-17 | 2018-02-09 | 天津农学院 | Physical and mechanical experiment device |
| CN108877419A (en) * | 2018-07-16 | 2018-11-23 | 邢台鸿儒知识产权服务有限责任公司 | A kind of portable physical experimental provision |
| CN108928568A (en) * | 2018-08-02 | 2018-12-04 | 南京方易日辰电子科技有限公司 | A kind of Physical Experiment counterweight anticorrosion the storage box |
-
2019
- 2019-01-15 CN CN201910034639.4A patent/CN109712488B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1766355A (en) * | 1928-05-31 | 1930-06-24 | Central Scientific Co | Educational apparatus |
| CN201237848Y (en) * | 2008-01-29 | 2009-05-13 | 施瑞华 | Demonstration instrument for parallelogram principle validation |
| CN204904661U (en) * | 2015-09-01 | 2015-12-23 | 张嘉玮 | High school's experiments of machanics device |
| CN105390051B (en) * | 2015-11-16 | 2017-10-03 | 浙江工业大学之江学院 | Portable assembly rational mechanics teaching aid |
| CN206991614U (en) * | 2017-05-17 | 2018-02-09 | 天津农学院 | Physical and mechanical experiment device |
| CN108877419A (en) * | 2018-07-16 | 2018-11-23 | 邢台鸿儒知识产权服务有限责任公司 | A kind of portable physical experimental provision |
| CN108928568A (en) * | 2018-08-02 | 2018-12-04 | 南京方易日辰电子科技有限公司 | A kind of Physical Experiment counterweight anticorrosion the storage box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109712488A (en) | 2019-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208026253U (en) | A kind of grade rod of municipal works road construction management | |
| CN205643036U (en) | An axle form crooked deformation test device | |
| CN207779321U (en) | A kind of portable building surface flatness test device | |
| CN203069185U (en) | Measurement instrument for building construction | |
| CN105067481B (en) | Digital mud balance tester and method of testing | |
| CN109712488B (en) | Portable physical mechanics experimental apparatus | |
| CN109365025B (en) | Physical mechanics experiment operating platform and working mode thereof | |
| CN206002396U (en) | A kind of simple three axle soil sample stretcher strain measurement apparatus | |
| CN208819468U (en) | A kind of junior physics study appurtenance | |
| CN206991614U (en) | Physical and mechanical experiment device | |
| CN107941691B (en) | Surface friction coefficient tester for bulk material | |
| CN206719472U (en) | Transverse inclination angle measuring tool based on ship inclination test | |
| CN210123333U (en) | Elasticity coefficient measuring device for physical experiments | |
| CN101603822A (en) | A kind of measurement mechanism of roughness of ground surface | |
| Isshi | Bending tester for fibers, yarns and fabrics | |
| CN102236989A (en) | Portable gravity acceleration tester | |
| CN211085218U (en) | Precision measurement combined tool for dynamic calibration of angle of inclined base plane | |
| CN205403778U (en) | Boats and ships rolling volume observation device | |
| CN205449734U (en) | Portable slump and extension measuring device | |
| CN203837703U (en) | Portable practical slope measurer | |
| CN209843003U (en) | Physical mechanics experiment integration instrument | |
| CN207798074U (en) | A kind of land surveying gradiometer | |
| CN208819467U (en) | It is a kind of for verifying the experimental provision of conservation of mechanical energy | |
| CN217384238U (en) | Supplementary multi-functional slope measurement's device | |
| CN108597320A (en) | A kind of junior physics study appurtenance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |