CN111928976A - Flat dynamometer for experiment teaching - Google Patents
Flat dynamometer for experiment teaching Download PDFInfo
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- CN111928976A CN111928976A CN202010789859.0A CN202010789859A CN111928976A CN 111928976 A CN111928976 A CN 111928976A CN 202010789859 A CN202010789859 A CN 202010789859A CN 111928976 A CN111928976 A CN 111928976A
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- rod
- shell
- bearing block
- dynamometer
- flat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
- G01L1/042—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs of helical springs
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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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Algebra (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a flat dynamometer for experiment teaching, which comprises a shell, wherein a bearing block is fixedly arranged on the upper surface of the shell, a hollow groove is formed in the front wall of the bearing block, a rod groove is formed between the middle positions of the top and the bottom of the shell and is vertically formed, graduations are fixedly arranged at the two sides of the front surface of the shell, a sliding rod is slidably arranged in the shell through the rod groove, an indicating strip is slidably arranged on the front surface of the shell, a compression spring is fixedly arranged at the middle position of the top of the inner wall of the bearing block, a protruding block is welded at the middle position of the upper surface of the bearing block, a hanging ring is fixedly arranged on the upper surface of the protruding block, and a cross rod is slidably arranged between the front surface and the. According to the invention, the installation frame body is arranged to liberate two hands during operation, so that the measurement convenience is improved, the error of an external force effect on a measurement result is reduced, and meanwhile, the experimental requirements of different heights and positions can be met.
Description
Technical Field
The invention relates to the field of mechanics experiment tools, in particular to a flat dynamometer for experiment teaching.
Background
In the teaching of physical mechanics, a flat dynamometer is used for measuring a heavy object, and then the length of a spring is in direct proportion to an external force applied to the spring based on the hooke theorem, so that the coefficient k of stiffness of the spring is measured, and the understanding of students is deepened.
Traditional dull and stereotyped dynamometer is when using, does not establish the installation support body and liberate both hands when the operation, has influenced measuring convenience, receives exogenic action to lead to measuring result to have great error during the experiment, simultaneously, can not satisfy the experiment demand of the dull and stereotyped dynamometry of various heights and position, has influenced the use of dull and stereotyped dynamometer.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a flat dynamometer for experiment teaching.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flat dynamometer for experiment teaching comprises a shell, wherein a bearing block is fixedly installed on the upper surface of the shell, a hollow groove is formed in the front wall of the bearing block, a rod groove is formed between the top and bottom intermediate positions of the shell and is vertically formed, graduations are fixedly installed on the two sides of the front surface of the shell, a slide rod is slidably installed in the shell through the rod groove, an indication strip is slidably installed on the front surface of the shell, a compression spring is fixedly installed at the intermediate position of the top of the inner wall of the bearing block, a bump is welded at the intermediate position of the upper surface of the bearing block, a hanging ring is fixedly installed on the upper surface of the bump, a cross rod is slidably installed between the front surface and the rear surface of the hanging ring, a piston sleeve is movably sleeved at the front end of the outer surface of the cross rod, a separation blade is fixedly sleeved on the outer surface of, and the lower extreme vertical welding of dead lever has the bottom plate, the equal fixed mounting in position all around of lower surface of bottom plate has the sucking disc.
Preferably, the two groups of the graduations are horizontally distributed at the positions of the two sides of the rod groove, the indicating strip is vertically and fixedly sleeved at the top of the outer surface of the sliding rod, and the two sides of the indicating strip correspond to the two groups of the graduations respectively.
Preferably, the lower end of the sliding rod is welded with a lifting hook, and the lifting hook is arranged below the shell.
Preferably, the compression spring is arranged inside the empty groove, and the lower end of the compression spring is fixedly installed at the upper end of the sliding rod.
Preferably, the piston sleeve is made of rubber, the piston sleeve is filled between the lifting ring and the cross rod, the front surface of the separation blade is in contact with the rear surface of the lifting ring, and the fixing rod is arranged behind the shell.
Preferably, the fixing rod is fixedly connected with one end of the cross rod, which is close to the cross rod, and the included angle between the fixing rod and the cross rod is ninety degrees.
Preferably, the upper end of the fixed rod is welded with a guide sleeve, the guide sleeve is slidably mounted inside the guide sleeve, the rotating pin is fixedly mounted at the rear end of the transverse rod through one side wall of the guide sleeve, the transverse rod is movably connected with the fixed rod through the rotating pin and the guide sleeve, the movable angle range of an included angle between the fixed rod and the transverse rod is zero to one hundred fifty degrees, fastening sleeves are sleeved at two ends of the rotating pin in a threaded manner, and two groups of mutually close ends of the fastening sleeves are movably mounted at the front wall and the rear wall of the guide sleeve respectively.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the installation frame body is formed by combining the cross rod and the fixed rod, the fixation of the installation frame body is realized through the adsorption effect of the sucker on the bottom plate and the experiment table, the lifting of the flat dynamometer on the installation frame body is realized by matching with the lifting ring limited by the separation blade, and the piston sleeve is filled between the lifting ring and the cross rod to realize reinforcement, so that both hands are liberated during operation, the convenience of measurement is improved, and the error of an external force effect on a measurement result is reduced;
2. according to the invention, the positioning connection between the cross rod and the fixed rod is realized by arranging the rotating pin positioned by the guide sleeve, so that the mounting frame body is of a combined structure, the angle of the mounting frame body can be adjusted by rotating the rotating pin, thereby meeting the experiment requirements of flat plate force measurement at different heights and positions, and the adjusting angle is fixed by mounting the fastening sleeve afterwards, so that the mounting frame body has good flexibility in dismounting;
to sum up, the flat dynamometer is provided with an installation frame body, liberates both hands when operating, improves the measuring convenience and reduces the error that the exogenic action led to the fact the measuring result, simultaneously, can satisfy the experiment demand of the dull and stereotyped dynamometry of different height and position.
Drawings
FIG. 1 is a side view of a first embodiment of a first exemplary embodiment of a flat dynamometer for teaching experiments in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a flat dynamometer for experimental teaching according to the present invention;
fig. 3 is a side view of a second embodiment of a flat dynamometer for teaching experiments according to the present invention.
In the figure: the device comprises a shell 1, a bearing block 2, a hollow groove 3, a rod groove 4, a scale 5, a sliding rod 6, a lifting hook 7, an indicating strip 8, a compression spring 9, a convex block 10, a lifting ring 11, a cross rod 12, a piston sleeve 13, a blocking piece 14, a fixed rod 15, a bottom plate 16, a suction cup 17, a guide sleeve 18, a rotating pin 19 and a fastening sleeve 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-2, a flat dynamometer for experiment teaching comprises a housing 1, a bearing block 2 is fixedly installed on the upper surface of the housing 1, a hollow groove 3 is formed in the front wall of the bearing block 2, a rod groove 4 is formed between the middle positions of the top and the bottom of the housing 1, the rod groove 4 is vertically formed, graduate scales 5 are fixedly installed at the two side positions of the front surface of the housing 1, a slide rod 6 is slidably installed in the housing 1 through the rod groove 4, an indication strip 8 is slidably installed on the front surface of the housing 1, a compression spring 9 is fixedly installed at the middle position of the top of the inner wall of the bearing block 2, a convex block 10 is welded at the middle position of the upper surface of the bearing block 2, a hanging ring 11 is fixedly installed on the upper surface of the convex block 10, a cross rod 12 is slidably installed between the front and rear surface positions of the hanging ring 11, a piston sleeve 13 is movably sleeved at the, the rear end of the cross rod 12 is provided with a fixing rod 15, the lower end of the fixing rod 15 is vertically welded with a bottom plate 16, and the periphery of the lower surface of the bottom plate 16 is fixedly provided with suckers 17.
Two sets of graduations table 5 horizontal distribution is in the both sides position of pole groove 4, indicate the perpendicular fixed cover of strip 8 to connect in the surface top position of slide bar 6, and the both sides of indicating strip 8 are corresponding with two sets of graduations table 5 respectively, the lower extreme welding of slide bar 6 has lifting hook 7, and lifting hook 7 sets up the below at casing 1, compression spring 9 sets up the inside at dead slot 3, and compression spring 9's lower extreme fixed mounting is in the upper end position of slide bar 6, piston sleeve 13 is the rubber material, and piston sleeve 13 fills between rings 11 and horizontal pole 12, the front surface of separation blade 14 contacts with rings 11's rear surface, dead lever 15 sets up the rear at casing 1, dead lever 15 and the one end fixed connection that horizontal pole 12 is close to each other, and the angle of contained angle between dead lever 15 and horizontal pole 12 is ninety degrees.
Example two
Referring to fig. 2-3, a flat dynamometer for experiment teaching comprises a housing 1, a bearing block 2 is fixedly installed on the upper surface of the housing 1, a hollow groove 3 is formed in the front wall of the bearing block 2, a rod groove 4 is formed between the middle positions of the top and the bottom of the housing 1, the rod groove 4 is vertically formed, graduate scales 5 are fixedly installed at the two side positions of the front surface of the housing 1, a slide rod 6 is slidably installed in the housing 1 through the rod groove 4, an indication strip 8 is slidably installed on the front surface of the housing 1, a compression spring 9 is fixedly installed at the middle position of the top of the inner wall of the bearing block 2, a convex block 10 is welded at the middle position of the upper surface of the bearing block 2, a hanging ring 11 is fixedly installed on the upper surface of the convex block 10, a cross rod 12 is slidably installed between the front and rear surface positions of the hanging ring 11, a piston sleeve 13 is movably sleeved at the, the rear end of the cross rod 12 is provided with a fixing rod 15, the lower end of the fixing rod 15 is vertically welded with a bottom plate 16, and the periphery of the lower surface of the bottom plate 16 is fixedly provided with suckers 17.
Two groups of graduations meters 5 are horizontally distributed at the two sides of a rod groove 4, an indication strip 8 is vertically fixedly sleeved at the top of the outer surface of a sliding rod 6, the two sides of the indication strip 8 correspond to the two groups of graduations meters 5 respectively, a lifting hook 7 is welded at the lower end of the sliding rod 6, the lifting hook 7 is arranged below a shell 1, a compression spring 9 is arranged inside a hollow groove 3, the lower end of the compression spring 9 is fixedly arranged at the upper end of the sliding rod 6, a piston sleeve 13 is made of rubber, the piston sleeve 13 is filled between a hanging ring 11 and a cross rod 12, the front surface of a baffle 14 is contacted with the rear surface of the hanging ring 11, a fixed rod 15 is arranged behind the shell 1, a guide sleeve 18 is welded at the upper end of the fixed rod 15, a rotating pin 19 is slidably arranged inside the guide sleeve 18, the rotating pin 19 is fixedly arranged at the rear end of the cross rod 12 through one side wall of the, the movable angle scope of contained angle is zero degree to one hundred fifty degrees between dead lever 15 and the horizontal pole 12, adapter sleeve 20 has been cup jointed to the equal screw thread in both ends of rotating pin 19, the rotating pin 19 of being fixed a position by guide pin sleeve 18 realizes the location between horizontal pole 12 and the dead lever 15 and connects, make the installation support body be integrated configuration, the angle of the rotatory adjustable installation support body through rotating pin 19, thereby satisfy the experiment demand of the dull and stereotyped dynamometry of different height and position, after adorn adapter sleeve 20 fixed adjustment angle, make the flexibility of installation support body dismouting good, the one end difference movable mounting that two sets of adapter sleeves 20 are close to each other is in the preceding back wall position of guide pin sleeve 18.
The working principle is as follows: the shell body 1 and the bearing block 2 are combined into a shell structure of the flat dynamometer, when the flat dynamometer is used, a weight to be tested is installed through the lifting hook 7, at the moment, the slide rod 6 positioned and installed through the rod groove 4 is influenced by the gravity of an object on the lifting hook 7 to pull the compression spring 9 installed in the hollow groove 3, at the moment, the indication strip 8 installed on the slide rod 6 vertically moves along with the slide rod, when the moving amplitude is slowed down to be stable, the numerical value corresponding to the position of the indication strip 8 on the scale 5 is the measured external force value, and then the length of the spring is in direct proportion to the received external force based on the hooke theorem, so that the stiffness coefficient k of the spring is measured, the hanging ring 11 installed through the convex block 10 provides the placing and positioning of the flat dynamometer, the cross rod 12 and the fixing rod 15 are combined into a mounting frame body, the fixing of the mounting frame body is realized through the adsorption effect of the sucking disc 17 on the bottom plate, the piston sleeve 13 is filled between the lifting ring 11 and the cross rod 12 to realize reinforcement, so that both hands are liberated during operation, the convenience of measurement is improved, and errors caused by external force to measurement results are reduced, the rotating pin 19 positioned by the guide sleeve 18 realizes the positioning connection between the cross rod 12 and the fixed rod 15, so that the mounting frame body is of a combined structure, the angle of the mounting frame body can be adjusted through the rotation of the rotating pin 19, the experimental requirements of flat plate force measurement with different heights and positions are met, the fixing sleeve 20 is fastened after mounting to fix the adjusting angle, the mounting frame body is good in dismounting flexibility, in the invention, the flat dynamometer is provided with the mounting frame body, and both hands are liberated during operation, so that the convenience of measurement is improved, the errors caused by the external force to the measurement results are reduced, and meanwhile, the experimental requirements of the flat plate force measurement with.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a flat dynamometer for experiment teaching, includes casing (1), its characterized in that: the upper surface of the shell (1) is fixedly provided with a bearing block (2), the front wall of the bearing block (2) is provided with a hollow groove (3), a rod groove (4) is arranged between the top and the bottom middle positions of the shell (1), the rod groove (4) is vertically arranged, both sides of the front surface of the shell (1) are fixedly provided with a dial gauge (5), the inside of the shell (1) is provided with a slide rod (6) through the rod groove (4) in a sliding manner, the front surface of the shell (1) is slidably provided with an indication strip (8), the middle position of the top of the inner wall of the bearing block (2) is fixedly provided with a compression spring (9), the middle position of the upper surface of the bearing block (2) is welded with a convex block (10), the upper surface of the convex block (10) is fixedly provided with a hanging ring (11), and a cross rod (12) is slidably arranged between the, piston sleeve (13) has been cup jointed in the activity of the surface front end position of horizontal pole (12), and the surface vertical fixation of horizontal pole (12) has cup jointed separation blade (14), the rear end of horizontal pole (12) is provided with dead lever (15), and the lower extreme vertical welding of dead lever (15) has bottom plate (16), the equal fixed mounting in position all around of the lower surface of bottom plate (16) has sucking disc (17).
2. The flat dynamometer for experiment teaching as claimed in claim 1, wherein two sets of scales (5) are horizontally distributed on two sides of the rod slot (4), the indicator bar (8) is vertically fixed and sleeved on the top of the outer surface of the sliding rod (6), and two sides of the indicator bar (8) correspond to the two sets of scales (5) respectively.
3. A flat dynamometer for experimental teaching according to claim 1, characterized in that the lower end of the slide rod (6) is welded with a hook (7), and the hook (7) is disposed under the case (1).
4. A flat dynamometer for experimental teaching according to claim 1, characterized in that the compression spring (9) is installed inside the empty slot (3), and the lower end of the compression spring (9) is fixed on the upper end of the slide rod (6).
5. The flat dynamometer for experiment teaching as claimed in claim 1, wherein the piston sleeve (13) is made of rubber, the piston sleeve (13) is filled between the hanging ring (11) and the cross bar (12), the front surface of the blocking piece (14) is in contact with the rear surface of the hanging ring (11), and the fixing rod (15) is arranged behind the housing (1).
6. The flat dynamometer for teaching experiments, as claimed in claim 1, wherein the fixing rod (15) is fixedly connected to the end of the cross bar (12) close to each other, and the angle between the fixing rod (15) and the cross bar (12) is ninety degrees.
7. The flat dynamometer for experiment and teaching as claimed in claim 1, wherein a guide sleeve (18) is welded to the upper end of the fixed rod (15), a rotating pin (19) is slidably mounted inside the guide sleeve (18), the rotating pin (19) is fixedly mounted at the rear end of the cross rod (12) through one side wall of the guide sleeve (18), the cross rod (12) is movably connected with the fixed rod (15) through the rotating pin (19) and the guide sleeve (18), the included angle between the fixed rod (15) and the cross rod (12) ranges from zero degree to one hundred fifty degrees, fastening sleeves (20) are respectively sleeved at two ends of the rotating pin (19) in a threaded manner, and one ends of the two sets of fastening sleeves (20) close to each other are respectively movably mounted at the front wall and the rear wall of the guide sleeve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789859.0A CN111928976A (en) | 2020-08-07 | 2020-08-07 | Flat dynamometer for experiment teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789859.0A CN111928976A (en) | 2020-08-07 | 2020-08-07 | Flat dynamometer for experiment teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111928976A true CN111928976A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010789859.0A Pending CN111928976A (en) | 2020-08-07 | 2020-08-07 | Flat dynamometer for experiment teaching |
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| CN (1) | CN111928976A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206877651U (en) * | 2017-05-31 | 2018-01-12 | 郭齐镇 | A kind of advertising board of convenient regulation height and angle |
| CN207379641U (en) * | 2017-09-11 | 2018-05-18 | 湖南匡楚科技有限公司 | A kind of physics experiment teaching tablet dynamometer |
| CN208223687U (en) * | 2018-04-08 | 2018-12-11 | 浙江海鸿工业产品设计有限公司 | A kind of portable weight beam of physics teaching |
| CN209841243U (en) * | 2019-06-04 | 2019-12-24 | 吴浩嘉 | Spring dynamometer for physics experiments that facilitates use |
-
2020
- 2020-08-07 CN CN202010789859.0A patent/CN111928976A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206877651U (en) * | 2017-05-31 | 2018-01-12 | 郭齐镇 | A kind of advertising board of convenient regulation height and angle |
| CN207379641U (en) * | 2017-09-11 | 2018-05-18 | 湖南匡楚科技有限公司 | A kind of physics experiment teaching tablet dynamometer |
| CN208223687U (en) * | 2018-04-08 | 2018-12-11 | 浙江海鸿工业产品设计有限公司 | A kind of portable weight beam of physics teaching |
| CN209841243U (en) * | 2019-06-04 | 2019-12-24 | 吴浩嘉 | Spring dynamometer for physics experiments that facilitates use |
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Application publication date: 20201113 |