CN104200735A - Device for demonstrating speed adjustment of flywheel - Google Patents
Device for demonstrating speed adjustment of flywheel Download PDFInfo
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- CN104200735A CN104200735A CN201410350706.0A CN201410350706A CN104200735A CN 104200735 A CN104200735 A CN 104200735A CN 201410350706 A CN201410350706 A CN 201410350706A CN 104200735 A CN104200735 A CN 104200735A
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Abstract
The invention discloses a device for demonstrating the speed adjustment of a flywheel. The device comprises a flywheel disc and a flywheel sheet, wherein the flywheel sheet is fixedly installed on the flywheel disc, the flywheel disc is fixedly installed on a flywheel shaft, a first-stage transmission portion comprises a handle used for providing a power, an input shaft is connected with one end of the flywheel shaft through a shaft coupler, and a small synchronous belt wheel is installed on the flywheel shaft; a second-stage transmission portion comprises a large synchronous belt wheel and a small synchronous belt wheel connected with first-stage transmission and second-stage transmission, the small synchronous belt wheel and the large synchronous belt wheel sleeve a synchronous belt, the large synchronous belt wheel is installed at one end of a pinion shaft, a pinion is installed at the other end of the pinion shaft, the pinion is engaged with a large gear, the large gear is installed on a large gear shaft, and a middle shaft superposed with the axis of the large gear shaft is installed on a bearing seat; the opposite ends of the large gear shaft and the middle shaft are connected with an output mechanism, and the output mechanism is linked with a load. The device disclosed by the invention is capable of simplifying structure and reducing cost, simple and convenient to operate, and suitable for teaching use.
Description
Technical field
The present invention relates to the appurtenance of imparting knowledge to students, especially a kind of device of demonstrating flywheel speed governing.
Background technology
Generally, machinery there will be velocity perturbation in motion process, and this velocity perturbation meeting causes producing additional dynamic pressure in kinematic pair, and causes mechanical vibration, thereby reduces mechanical life-span, efficiency and work quality.
Flywheel, due to its large moment of inertia, can serve as energy storage device, regulates the velocity perturbation of machine run.When external force is made gained work to system, it gets up unnecessary energy storage with the form of kinetic energy, and the amplitude that makes mechanical speed increase reduces; When external force is done to lose merit to system, it discharges again the energy of storage, and the amplitude that mechanical speed is declined reduces.
Yet mostly the device about flywheel speed governing is the mechanical hook-up that automaticity is very high in the market, these devices are not only heavy, expensive, and often do not represent intuitively the function of flywheel.In addition, it is high that the method for operating of these devices requires, the technician's that the action need of whole device is special guidance, be difficult to realize use it between teaching aid Ge great colleges and universities universal on a large scale.
Summary of the invention
In order to overcome, the structure of existing demonstration flywheel mode of speed regulation is heavy, expensive, complicated operation, can not be applicable to the deficiency that teaching is used, and the invention provides a kind of simplified structure, reduces costs, easy and simple to handle, the device that is applicable to the demonstration flywheel speed governing of teaching use.
The technical solution adopted for the present invention to solve the technical problems is:
Demonstrate a device for flywheel speed governing, comprise base and flywheel, described Flywheel disc and flywheel sheet, described flywheel sheet is fixedly mounted on Flywheel disc, and described Flywheel disc is fixedly mounted on flywheel shaft, and described device also comprises one-level running part, secondary transmission part, output mechanism and load, wherein
Described one-level running part comprises for the handle of power is provided, described handle is arranged on rotating disk, described rotating disk is fixedly mounted on input shaft, one side of described input shaft is arranged near in the first primary axis bearing of described rotating disk, the other end of described input shaft is connected with one end of flywheel shaft by shaft coupling, the other end of described flywheel shaft is installed described Flywheel disc, described flywheel shaft is arranged in the second primary axis bearing, described the first primary axis bearing and the second primary axis bearing are fixedly mounted on base, on described flywheel shaft, small synchronous pulley are installed;
Described secondary transmission partly comprises for connecting the large synchronous pulley of firsts and seconds transmission, described small synchronous pulley, large synchronous pulley is sleeved on Timing Belt, described large synchronous pulley is arranged on one end of pinion shaft, the other end of described pinion shaft is provided with pinion wheel, on pinion shaft between described large synchronous pulley and described pinion wheel, lay two the first secondary bearing seats, described pinion wheel and gear wheel engagement, described gear wheel is arranged in Large Gear Shaft During, described Large Gear Shaft During is arranged on the second secondary bearing seat, and be arranged on the 3rd secondary bearing seat with the intermediate shaft of the dead in line of described Large Gear Shaft During, described the first secondary bearing seat, the second secondary bearing seat and the 3rd secondary bearing seat are all fixedly mounted on base,
The opposite end of described Large Gear Shaft During and intermediate shaft is all connected with described output mechanism, described output mechanism and load interlock.
Preferably, described output mechanism is six bar elbow-bar mechanism, described six bar elbow-bar mechanism comprise support, two forks, a connecting rod, two support bars, a pole, a slide bar, the opposite end of described Large Gear Shaft During and intermediate shaft is all connected with the upper end of a fork, the upper end of a connecting rod is between the lower end of two forks, between the lower end of the upper end of a connecting rod and two forks, by pin, be connected, the lower end of a described connecting rod and the wherein lower end of a support bar, the upper end of another root support bar is connected by pin, wherein the upper end of a support bar is connected by pin with one end of a pole, the other end of a pole is fixedly mounted on the top of support, the lower end of described another root support bar is connected by pin with the upper end of slide bar, described slide bar can slide up and down to be sleeved in chute, described chute is fixedly mounted on the bottom of described support, drift is installed in the lower end of described chute, described drift is positioned in load.Certainly, output mechanism also can adopt other bar linkage structures.
Further again, described load is spring block.This version can be simulated forge press, if other lathes also can adopt the load of other types.
On described pinion shaft, speed probe is installed, described speed probe with for generate the fluctuation of speed demonstration module of speed curves according to signals of rotational speed sensor.Described fluctuation of speed demonstration module can adopt PC to realize.
Described Flywheel disc and flywheel sheet are bolted, and described Flywheel disc center section prevents the step of centre-of gravity shift while being provided with in order to High Rotation Speed.
Beneficial effect of the present invention is mainly manifested in: simplified structure, reduce costs, easy and simple to handle, be applicable to teaching and use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of the demonstration flywheel speed governing that provides of the embodiment of the present invention 1;
The flywheel structure schematic diagram that Fig. 2 embodiment of the present invention 1 provides;
The flywheel speed governing fluctuation of speed figure that Fig. 3 embodiment of the present invention 1 provides;
Six bar elbow-bar mechanism schematic diagram of the flywheel arrangements for speed regulation that Fig. 4 embodiment of the present invention 1 provides;
Fig. 5 is the enlarged diagram at A place in Fig. 4.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
By reading the detailed description of non-limiting example being done with reference to the following drawings, the present invention and feature thereof, profile and advantage will become more apparent.In whole accompanying drawings, identical mark is indicated identical part.Deliberately proportionally do not draw accompanying drawing, focus on illustrating purport of the present invention.
With reference to Fig. 1～Fig. 5, a kind of device of demonstrating flywheel speed governing, comprise base and flywheel, described Flywheel disc 107 and flywheel sheet 108, described flywheel sheet 108 is fixedly mounted on Flywheel disc 107, and described Flywheel disc 107 is fixedly mounted on flywheel shaft 105, and described device also comprises one-level running part 1, secondary transmission part 2, output mechanism 3 and load, wherein
Described one-level running part 1 comprises for the handle 101 of power is provided, described handle 101 is arranged on rotating disk, described rotating disk is fixedly mounted on input shaft 103, one side of described input shaft 103 is arranged near in the first primary axis bearing 1021 of described rotating disk, the other end of described input shaft 103 is connected with one end of flywheel shaft 105 by shaft coupling 104, the other end of described flywheel shaft 105 is installed described Flywheel disc 107, described flywheel shaft 105 is arranged in the second primary axis bearing 1022, described the first primary axis bearing 1021 and the second primary axis bearing 1022 are fixedly mounted on base, on described flywheel shaft 105, small synchronous pulley 106 is installed,
Described secondary transmission part 2 comprises for connecting the large synchronous pulley 209 of firsts and seconds transmission, described small synchronous pulley 106, large synchronous pulley 209 is sleeved on Timing Belt, described large synchronous pulley 209 is arranged on one end of pinion shaft 204, the other end of described pinion shaft 204 is provided with pinion wheel 208, on pinion shaft between described large synchronous pulley 209 and described pinion wheel 208, lay two the first secondary bearing seats 2021, described pinion wheel 208 and gear wheel 205 engagements, described gear wheel 205 is arranged in Large Gear Shaft During 203, described Large Gear Shaft During 203 is arranged on the second secondary bearing seat 2022, and be arranged on the 3rd secondary bearing seat 2023 with the intermediate shaft 201 of the dead in line of described Large Gear Shaft During 203, described the first secondary bearing seat 2021, the second secondary bearing seat 2022 and the 3rd secondary bearing seat 2023 are all fixedly mounted on base,
The opposite end of described Large Gear Shaft During 203 and intermediate shaft 201 is all connected with described output mechanism 3, described output mechanism 3 and load interlock.
Preferably, described output mechanism 3 is six bar elbow-bar mechanism, described six bar elbow-bar mechanism comprise support 301, two forks 304, a connecting rod 306, two support bars 3031, 3032, a pole 302, a slide bar 309, the opposite end of described Large Gear Shaft During 203 and intermediate shaft 201 is all connected with the upper end of a fork 304, the upper end of a connecting rod 306 is between the lower end of two forks 304, between the lower end of the upper end of a connecting rod 306 and two forks 304, by pin 305, be connected, the lower end of a described connecting rod 306 and the wherein lower end of a support bar 3031, the upper end of another root support bar 3032 is connected by pin 307, wherein the upper end of a support bar 3031 is connected by pin with one end of a pole 302, the other end of a pole 302 is fixedly mounted on the top of support 301, the lower end of described another root support bar 3032 is connected by pin 308 with the upper end of slide bar 309, described slide bar 309 can slide up and down to be sleeved in chute 310, described chute 310 is fixedly mounted on the bottom of described support 301, drift 311 is installed in the lower end of described chute 310, described drift 311 is positioned in load 312.Certainly, output mechanism also can adopt other bar linkage structures.
Further again, described load 312 is spring block.This version can be simulated forge press, if other lathes also can adopt the load of other types.
On described pinion shaft 204, speed probe 206 is installed, described speed probe 206 with for generate the fluctuation of speed demonstration module of speed curves according to signals of rotational speed sensor.Described fluctuation of speed demonstration module can adopt PC to realize.
Described Flywheel disc 107 and flywheel sheet 108 are bolted, and described Flywheel disc center section prevents the step 109 of centre-of gravity shift while being provided with in order to High Rotation Speed.
The teaching aid of the present embodiment is based on case history---and forge press is that modelling forms, and the function by the speed governing of demonstration flywheel, makes student that theory and practice is combined, and further grasps flywheel knowwhy, and the interest that excites student deeply to probe into.
Fig. 1 is the structural representation of the flywheel arrangements for speed regulation that provide of the embodiment of the present invention 1.As shown in the figure, the flywheel arrangements for speed regulation that the embodiment of the present invention 1 provides comprise: for the one-level running part 1 of mounting handle 101 and flywheel, for connecting the secondary transmission part 2 of power input and output of whole device, for carrying out six bar elbow-bar mechanism of output and as the spring block 3 of load.
In embodiment provided by the invention, the embodiment of flywheel functions is mainly that flywheel has large moment of inertia.And the moment of inertia of flywheel is mainly embodied on the moment of inertia of flywheel sheet 108.Moment of inertia for a particle can be expressed as I=mr
2, wherein I is moment of inertia, and m is its quality, and r is the vertical range of particle and rotating shaft.
To the design of flywheel sheet 108, we adopt material optimum optimization method, with minimum material, obtain maximum moment of inertia.Structure and moment of inertia formula in conjunction with flywheel sheet 108, we are designed to one flywheel sheet 108 and have certain thickness annulus, the quality of flywheel sheet 108 integral body is just concentrated on wheel rim like this, flywheel sheet 108 in the situation that of same material can be done more, allow the radius of flywheel sheet 108 become larger.Like this, we obtain maximum moment of inertia with regard to having realized with minimum material.
As shown in Figure 2, flywheel is bolted and is combined by Flywheel disc 107 and flywheel sheet 108.Wherein, on Flywheel disc 107 and flywheel sheet 108, on 4 positions of symmetry, respectively there are 4 unthreaded holes, with bolt, connect combination.Flywheel disc 107 center sections are provided with step 109, and the design of this structure is while preventing flywheel High Rotation Speed, to cause flywheel deviation of gravity center axle center, and causes double swerve.
Like this, in embodiment provided by the invention, can realize by changing the quantity of flywheel sheet 108 variation of Rotary Inertia of Flywheel, thereby contrast shows the function of flywheel.
In embodiment provided by the invention, it is by the sensor 206 picking rate signals on pinion shaft 204 that the angular velocity fluctuation of device shows, with single-chip microcomputer, signal is processed, then the data transmission obtaining is arrived to PC, by PC, generate speed curves, by the flywheel sheet of varying number is installed, can obtain different velocity perturbation curves, by contrast, represent the speed-regulating function of flywheel.
Sensor 206 adopts photoelectric encoder, coordinates 20 grid coded discs 207 can measure the rotating speed of axle.The signal of sensor 206 can directly be given the I/O mouth of single-chip microcomputer, and the signal square-wave signal that is standard.
Single-chip microcomputer inside can utilize an external interrupt paired pulses to catch, then opens a periodically interruption of Interruption generation, the value of taking out step-by-step counting variable while at every turn entering Interruption, and the value of replacement counting variable is 0.Then utilize the value of taking out to go out rotating speed with computation of Period regularly.Example: code-disc is 20 grids, often turns around and produces 20 pulses.Calculate the method for rotating speed: if within one second, obtain 40 pulses, rotating speed is 40/20=2 revolutions per second.
Because the data to PC transmission have the difference in two groups and life period, so data are transferred to after PC by USB at single-chip microcomputer, data can be done once and preserve, and the form that data are preserved is kept on PC with binary form.
Obtaining not adding flywheel sheet and adding after the data of rotating speed in two kinds of situations of flywheel sheet, we utilize MATLAB software to the data that obtain after smoothing processing, in same figure, show, thereby contrast two kinds of fluctuation of speed situations in situation visual and clearly.
On for hand problem in the processing of human factor: through our long-term experiment, and serious analysis mass data, we are the certain optimization through programmed algorithm to twice situation of same person, the main center of gravity of wherein optimizing is to introduce arithmetic mean and apart from the concept of the factor, the impact that can comparatively reasonably solve twice hand human factor.
, introduce the algorithm optimization to two secondary data here: first, the data of recording for twice are carried out respectively to arithmetic mean and process and obtain two data A, B.Here, we suppose A >=B.Data B is multiplied by the distance factor c that algorithm provides and obtains data D, if | A-D|≤δ, δ is the threshold values that algorithm provides, those group data that we are B by mean value are multiplied by respectively apart from factor c; If | A-D| >=δ, upgrade the value apart from factor c, repeat aforesaid operations.
As shown in Figure 3, device, not add flywheel sheet different with the speed governing effect adding in two kinds of situations of flywheel sheet, has intuitively represented the function of flywheel speed governing.
As shown in Figure 4 and Figure 5, in order to make drift have larger power, select six bar elbow-bar mechanism, it has very large mechanical advantage when approaching mechanism's bottom dead centre, meets forging and stamping requirements of one's work.Connecting rod 303 and slide bar 309 adopt the pin joint mode of three point on a straight line, make mechanism when operation, and moving up and down of slide bar 309 becomes more stable.
The present invention be take case history forge press and is carried out teaching aid design as model, abolishes student's mystique to engineering equipment in the heart, by knowwhy and actual digesting; By the dismounting of hand type of drive and flywheel sheet, increased student's property of participation, realize interactive teaching; The effect of utilizing the hand student's of allowing firsthand experience to bring to flywheel, intensification student's impression; The mechanism principle of whole teaching aid is clear, and external form is small and exquisite attractive in appearance, eliminates the timidity sense of student to mechanical teaching aid, the enthusiasm that excites student to probe into.
It should be appreciated by those skilled in the art that those skilled in the art can realize described variation example in conjunction with prior art and above-described embodiment, do not repeat them here.Such variation example does not affect flesh and blood of the present invention, does not repeat them here.
Claims (5)
1. a device of demonstrating flywheel speed governing, comprise base and flywheel, described Flywheel disc and flywheel sheet, described flywheel sheet is fixedly mounted on Flywheel disc, described Flywheel disc is fixedly mounted on flywheel shaft, it is characterized in that: described device also comprises one-level running part, secondary transmission part, output mechanism and load, wherein
Described one-level running part comprises for the handle of power is provided, described handle is arranged on rotating disk, described rotating disk is fixedly mounted on input shaft, one side of described input shaft is arranged near in the first primary axis bearing of described rotating disk, the other end of described input shaft is connected with one end of flywheel shaft by shaft coupling, the other end of described flywheel shaft is installed described Flywheel disc, described flywheel shaft is arranged in the second primary axis bearing, described the first primary axis bearing and the second primary axis bearing are fixedly mounted on base, on described flywheel shaft, small synchronous pulley are installed;
Described secondary transmission partly comprises for connecting the large synchronous pulley of firsts and seconds transmission, described small synchronous pulley, large synchronous pulley is sleeved on Timing Belt, described large synchronous pulley is arranged on one end of pinion shaft, the other end of described pinion shaft is provided with pinion wheel, on pinion shaft between described large synchronous pulley and described pinion wheel, lay two the first secondary bearing seats, described pinion wheel and gear wheel engagement, described gear wheel is arranged in Large Gear Shaft During, described Large Gear Shaft During is arranged on the second secondary bearing seat, and be arranged on the 3rd secondary bearing seat with the intermediate shaft of the dead in line of described Large Gear Shaft During, described the first secondary bearing seat, the second secondary bearing seat and the 3rd secondary bearing seat are all fixedly mounted on base,
The opposite end of described Large Gear Shaft During and intermediate shaft is all connected with described output mechanism, described output mechanism and load interlock.
2. a kind of device of demonstrating flywheel speed governing as claimed in claim 1, it is characterized in that: described output mechanism is six bar elbow-bar mechanism, described six bar elbow-bar mechanism comprise support, two forks, a connecting rod, two support bars, a pole, a slide bar, the opposite end of described Large Gear Shaft During and intermediate shaft is all connected with the upper end of a fork, the upper end of a connecting rod is between the lower end of two forks, between the lower end of the upper end of a connecting rod and two forks, by pin, be connected, the lower end of a described connecting rod and the wherein lower end of a support bar, the upper end of another root support bar is connected by pin, wherein the upper end of a support bar is connected by pin with one end of a pole, the other end of a pole is fixedly mounted on the top of support, the lower end of described another root support bar is connected by pin with the upper end of slide bar, described slide bar can slide up and down to be sleeved in chute, described chute is fixedly mounted on the bottom of described support, drift is installed in the lower end of described chute, described drift is positioned in load.
3. a kind of device of demonstrating flywheel speed governing as claimed in claim 1 or 2, is characterized in that: described load is spring block.
4. a kind of device of demonstrating flywheel speed governing as claimed in claim 1 or 2, is characterized in that: on described pinion shaft, speed probe is installed, described speed probe with for generate the fluctuation of speed demonstration module of speed curves according to signals of rotational speed sensor.
5. a kind of device of demonstrating flywheel speed governing as claimed in claim 1 or 2, is characterized in that: described Flywheel disc and flywheel sheet are bolted, and described Flywheel disc center section prevents the step of centre-of gravity shift while being provided with in order to High Rotation Speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350706.0A CN104200735B (en) | 2014-07-22 | 2014-07-22 | Device for demonstrating speed adjustment of flywheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410350706.0A CN104200735B (en) | 2014-07-22 | 2014-07-22 | Device for demonstrating speed adjustment of flywheel |
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| CN104200735A true CN104200735A (en) | 2014-12-10 |
| CN104200735B CN104200735B (en) | 2017-02-01 |
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| CN110307923A (en) * | 2019-06-25 | 2019-10-08 | 南京理工大学 | A kind of measuring device of wind spring energy conversion efficiency |
| CN110697469A (en) * | 2019-11-18 | 2020-01-17 | 丁永红 | Winding equipment is used in PE membrane production |
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| CN104200735B (en) | 2017-02-01 |
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