CN104167144A - Mechanical tower demonstration mechanism - Google Patents
Mechanical tower demonstration mechanism Download PDFInfo
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- CN104167144A CN104167144A CN201410285652.4A CN201410285652A CN104167144A CN 104167144 A CN104167144 A CN 104167144A CN 201410285652 A CN201410285652 A CN 201410285652A CN 104167144 A CN104167144 A CN 104167144A
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Abstract
The invention discloses a mechanical tower demonstration mechanism. The mechanical tower demonstration mechanism includes a delivery mechanism, a striking mechanism, a lifting mechanism, and a collecting device. Various typical mechanical structures are made into modules convenient to replace, so that the mechanical tower demonstration mechanism can not only be used for laboratory teaching, but also be used for on-site demonstration in class in a classroom or manual parameter adjustment by students, thereby achieving intuitive and interesting effects; and the mechanical tower demonstration mechanism not only can be used as a demonstrative teaching aid, but also can be used as a practical teaching aid for students to autonomously design and change mechanism parameters to detect learning conditions of themselves. The mechanical tower demonstration mechanism is compact and beautiful in structure, and has both teaching and entertainment functions. A teacher demonstrates and explains at the same time in class, which is vivid, and realizes teaching through lively activities, thereby fully attracting attention of students, improving learning interest of the students, enhancing learning efficiency, and improving hands-on innovation ability of the students while learning related knowledge of various mechanisms.
Description
Technical field
The present invention relates to a kind of mechanical tower and demonstrate mechanism.
Background technology
Mechanical principle, as an important technical core curriculum, plays indispensable vital role in the process of cultivating mechanical aspects creative talent, therefore learns mechanical principle well the student of mechanical speciality is had great significance.But because mechanical principle course has certain theoretical property, logicality and stronger engineering practice, and the key concept comprising is more, the analytical approach of principle and mechanism is complicated, and student has difficulty with one's lessons while contacting at first this course, understands difficulty.Can cause gradually the problems such as students learning interest declines, and learning efficiency is not high.How to promote students ' interest of study, improve teaching efficiency, improve efficiency of teaching and be at present each colleges and universities' mechanical principle course problem in the urgent need to address of imparting knowledge to students.
And teaching aid is as the main apparatus of aided education, in field research process, often can plays and convince preferably evocation by patient analysis.But existing mechanical principle teaching aid, some principles are complicated, and what have is bulky, generally can only in the showcase of laboratory, observe and carry out teaching practice demonstration, the continuity that has interrupted teaching, teaching efficiency is limited, therefore be necessary to manufacture and design the teaching aid that more can adapt to mechanical principle course teaching.
Summary of the invention
The object of this invention is to provide a kind of mechanical tower and demonstrate mechanism.
According to an aspect of the present invention, provide a kind of mechanical tower to demonstrate mechanism, comprised connecting gear, hit agency, lifting mechanism, gathering-device, wherein,
Establish on the ground one end of feet,
Connecting gear is chain transmission, and connecting gear comprises chain and gear, and chain is hexagon shape, and the plane at the hexagon place that chain forms is a surface level, and the place, six angles of chain is provided with gear to support connecting gear and power transmission, and gear is located on feet,
Hit agency comprises motor, position sensor, worm-and-wheel gear, screw-nut body, scissors mechanism and pinion and rack, hit agency is connected with connecting gear, position sensor is responded to the position of outside bead, worm-and-wheel gear, scissors mechanism, screw-nut body and pinion and rack are connected from the bottom up successively, motor drives worm-and-wheel gear, scissors mechanism, screw-nut body and pinion and rack motion
Lifting mechanism comprises motor, feed screw nut, three gears and electromagnet, and electromagnet is connected with one of them gear by feed screw nut, and motor rotates by three gear drive feed screw nuts,
Gathering-device funnel, the center of gathering-device is provided with an aperture, and aperture is connected with lifting mechanism.
The present invention makes by all kinds of typical machine structures the module that can conveniently replace, can be for laboratory teaching, also can be on classroom, classroom on-the-spot demonstration or allow student start to regulate parameter, intuitively interesting; Not only can be used as demonstration class teaching aid but also can be used as for students autonomous Design and changed mechanism parameter in order to detect the practicality teaching aid of self study situation.It is structurally compact attractive in appearance, has teaching property and recreational in function concurrently.Teacher is in demonstration limit, top, classroom explanation, vivid, teaches through lively activities, and can fully attract attention of student, promotes its learning interest, promotes learning efficiency, has improved to start innovation ability in the various mechanisms of study relevant knowledge.
The present invention needs bead to carry out transmission at every layer, and the present invention's employing is chain transmission.Chain transmission has nonelastic slip and skidding, average ratios is accurate, reliable operation, efficiency is high, transmitted power is large, overload capacity is strong, transmission size under identical operating mode is little, required tensile force is little, the pressure acting on axle is little, can be at high temperature, humidity, many dirt, have under the rugged surroundings such as pollution and work, because the present invention has added the heavier little iron ball of quality on connecting gear, and the teaching aid of made of the present invention can be applicable to the complex environments such as classroom, open air, exhibition cabinet, so chain transmission is very applicable.
In some embodiments, also comprise pass mechanism for card, close mechanism for card and be connected with connecting gear, hit agency, lifting mechanism.
In some embodiments, close mechanism for card and comprise transverse planing machine mechanism, aircraft takeoffs and landings frame mechanism is crank and rocker mechanism.Thus, aircraft takeoffs and landings frame mechanism is crank and rocker mechanism.
In some embodiments, close mechanism for card and also comprise aircraft takeoffs and landings frame mechanism, aircraft takeoffs and landings frame mechanism with aircraft takeoffs and landings frame mechanism be connected.
In some embodiments, close mechanism for card and also comprise gear drive, gear drive comprises three gears, and three gears mesh successively, and gear drive is connected with aircraft takeoffs and landings frame mechanism.Thus,
In some embodiments, close mechanism for card and also comprise ratchet device, ratchet device has ratchet and pawl, and ratchet device is connected with gear drive.
In some embodiments, close mechanism for card and also comprise Geneva mechanism, Geneva mechanism is provided with wheel chain gearing, and Geneva mechanism is connected with ratchet device.
In some embodiments, close mechanism for card and also comprise bevel gear mechanism, bevel gear mechanism is provided with four bevel gears up and down, and bevel gear mechanism is connected with Geneva mechanism.Thus, bevel gear is again conical gear, has high load capacity bearing capacity noise reduction and damping and is easy to moulding, the feature that lubricity is good.
Accompanying drawing explanation
Fig. 1 is that the mechanical tower of one embodiment of the present invention is demonstrated the structural representation of mechanism;
Fig. 2 is the Geneva mechanism structural representation that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 3 is the gear mechanism structural representation that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 4 is the aircraft takeoffs and landings mechanism structure schematic diagram that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 5 is the hit agency structural representation that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 6 is the ratchet device structural representation that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 7 is the transverse planing machine mechanism structure schematic diagram that shown in Fig. 1, mechanical tower is demonstrated mechanism;
Fig. 8 is the cam mechanism structural representation that shown in Fig. 1, mechanical tower is demonstrated mechanism.
In figure, 1-Geneva mechanism, 2-gear mechanism, 3-aircraft takeoffs and landings mechanism, 4-hit agency, 5-ratchet device, 6-transverse planing machine mechanism, 7-cam mechanism.
Embodiment
Below in conjunction with accompanying drawing, invention is described in further detail.
As shown in Figures 1 to 8, mechanical tower is demonstrated mechanism and is comprised connecting gear, hit agency, lifting mechanism, gathering-device, wherein,
Connecting gear is chain transmission, connecting gear is hexagon shape, place, hexagonal six angles is provided with gear to support connecting gear and power transmission, parameter adjustable type machinery tower demonstration mechanism all needs bead to carry out transmission at every layer, and the employing of this project is chain transmission, chain transmission has nonelastic slip and skidding, average ratios is accurate, reliable operation, efficiency is high, transmitted power is large, overload capacity is strong, transmission size under identical operating mode is little, required tensile force is little, the pressure acting on axle is little, can be at high temperature, moist, many dirt, have under the rugged surroundings such as pollution and work.Because this project has been added the heavier little iron ball of quality on connecting gear, and the teaching aid of this project made can be applicable to the complex environments such as classroom, open air, exhibition cabinet, so chain transmission is applicable to this project very much.
The chain-drive mechanism that parameter adjustable type machinery tower demonstration mechanism is every layer is built into a regular hexagon, and orthohexagonal each summit adopts gear to support and transferring power, and the chain-drive mechanism of every layer is all only driven by a motor.
Hit agency comprises position sensor, worm-and-wheel gear, screw-nut body, scissors mechanism and pinion and rack, hit agency is connected with connecting gear, position sensor is responded to the position of outside bead, worm-and-wheel gear, scissors mechanism, screw-nut body and pinion and rack are connected from the bottom up successively
Can carry out real-time tracing to demonstrate the bead of motion on each layer of mechanism at mechanical tower, and precision strike after receiving instruction, make it fall into recycling module.
Solution thinking: hit agency is wanted to demonstrate each interlayer motion of mechanism at mechanical tower, on same layer, motion has the ability of 360 degree rotations, and and in impacting process, realize and impact launching an attack and contracting arm process of arm, hit agency must be the mechanical arm that possesses three-degree-of-freedom motion ability.Based on motion requirement, this project team has designed hit agency as shown in drawings.
Hit agency combines worm-and-wheel gear, screw-nut body, and scissors mechanism and pinion and rack, possessed Three Degree Of Freedom free movement ability, thereby make it can impact the bead of demonstrating optional position in mechanism in mechanical tower.
The three-degree-of-freedom motion of hit agency is by motor direct-drive worm and gear, feed screw nut or rack-and-pinion, thereby driving mechanical arm carries out corner and mobile realization.Three Degree Of Freedom be respectively the swaying of base, crossbearer move up and down and impact launching an attack and retracting of arm.The motion flow process of hit agency, for following in real time bead motion, makes to cut fork and impacts end aligning bead, when bead being detected when ad-hoc location cannot reach a standard, and control device transmitted signal, motor rotation makes to cut to pitch to launch an attack bead is shot down.
Lifting mechanism is connected with connecting gear, and parameter adjustable type machinery tower demonstration mechanism has three layers, when passing through all mechanisms of certain one deck, needs transmission, enters into lower one deck and continues to make a breakthrough.And when bead is shot down by beating unit, also need to utilize lifting mechanism that bead is raised in original layer.Based on this, this Project design lifting mechanism between layers.Lifting mechanism utilizes feed screw nut that bead is transported in corresponding layer and is gone, and has electromagnet in order to hold little iron ball on feed screw nut simultaneously.
Gathering-device is collected outside bead.The motion bead of parameter adjustable type machinery tower demonstration mechanism is open to the custom after failure or all mechanisms by certain one deck and all will be shot down by beating unit before the outpost of the tax office, therefore need to there is a device to collect fallen bead, be connected lifting mechanism so that the motion of parameter adjustable type machinery tower demonstration mechanism is kept continuous simultaneously.For these reasons, we have designed gathering-device.Collection container is six prismoid shaped containers that utilize transparent plastic sheet to make, and bead is shot down in six terrace with edge containers by beating unit, from aperture, enters into inclined ramp, and then the electromagnet that is lifted mechanism has attracted the linking of motion.Also comprise pass mechanism for card, close mechanism for card and be connected with connecting gear, hit agency, lifting mechanism.
Close mechanism for card and comprise transverse planing machine mechanism, aircraft takeoffs and landings frame mechanism is crank and rocker mechanism, transverse planing machine mechanism is a kind of in industrial application common mechanism very widely, in many engineering machinery, can see its figure, and be a class fundamental mechanism important in mechanical principle course, be often used as example and explain crank block, the basic rod member such as crank rocking beam mechanism.
Close mechanism for card and also comprise aircraft takeoffs and landings frame mechanism, aircraft takeoffs and landings frame mechanism is connected with aircraft takeoffs and landings frame mechanism.
Close mechanism for card and also comprise gear drive, gear drive comprises three gears, and three gears mesh successively, and gear drive is connected with aircraft takeoffs and landings frame mechanism.Gear mechanism module is combined by train and pinion and rack, and train is for speed change, and while making motor speed be delivered to tooth bar, tooth bar obtains different speed.Tooth bar moves in trapped orbit, and its movement velocity has reflected the reduction gear ratio size of train.Train utilizes existing gear freely to build and form by student, can produce different reduction gear ratio.
Close mechanism for card and also comprise ratchet device, ratchet device has ratchet and pawl, and ratchet device is connected with gear drive.
Close mechanism for card and also comprise Geneva mechanism, Geneva mechanism is provided with wheel chain gearing, and Geneva mechanism is connected with ratchet device.Geneva mechanism is a kind of simple in structure, and physical dimension is little, and mechanical efficiency is high, and can be more reposefully, the intermittent motion mechanism that carries out off and on transposition.This project has been built a Geneva mechanism that parameter is adjustable.Wherein, initiatively driver plate is made continuous rotary with constant angular velocity w, when the round pin on driver plate does not enter the radial slot of sheave, because the indent locking arc of sheave is blocked by the evagination locking arc of active driver plate, therefore sheave is motionless.When round pin enters sheave radial slot, locking arc is also released.After this, sheave is subject to ordering about of round pin and rotates.When round pin is when another side leaves radial slot, locking arc is stuck again, and sheave is transfixion again.Until round pin while again entering another radial slot of sheave, repeats again above-mentioned motion.So door, due to the transmission of connecting rod, is pumping, complete the unlatching of door with closed.The period of motion of Geneva mechanism is relevant with the round pin number on active driver plate, and round pin number is larger, and the period of motion of Geneva mechanism is shorter, and the switching cycle of door is also shorter.When bead moves to Geneva mechanism, give the regular hour to allow bead pass through door, the switching cycle that student carrys out control gate by the round pin number of adjusting on driver plate initiatively, so that bead has sufficient time to pass through Geneva mechanism.
Close mechanism for card and also comprise bevel gear mechanism, bevel gear mechanism is provided with four bevel gears up and down, and bevel gear mechanism is connected with Geneva mechanism.Bevel gear is again conical gear, has high load capacity bearing capacity noise reduction and damping and is easy to moulding, the feature that lubricity is good.This mechanism is combined the bevel gear set of orthogonal four direction, and the rotation of any one gear all can be transferred to its excess-three, and two relative cone tooth switched in opposite.
Cam mechanism module combines cam mechanism and worm-and-wheel gear, and worm-and-wheel gear, for decelerating through motor, has suitable rotating speed while making camming movement.On same camshaft, arrange the different cam of a plurality of outlines, can show the impact that different cam profile curves produce pushrod movement.In mechanical tower demonstration mechanism entertainment teaching process, the bead so far module outpost of the tax office of moving, student is by choosing a certain cam as the mechanism that makes a breakthrough, if cam rise is suitable, bead can safety, otherwise will fall into recycling module.The selection transposing of cam is convenient, only former cam need be unclamped, and it is fixing that new cam is moved to push rod below.The impact of the cam that this module has been shown cam mechanism kinetic characteristic and different outlines to student simply on pushrod movement, is beneficial to student and studies cam relevant knowledge in depth.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to the protection domain of invention.
Claims (8)
1. mechanical tower demonstration mechanism, is characterized in that, comprises feet, three connecting gears, hit agency, lifting mechanism, gathering-device, wherein,
Establish on the ground one end of described feet;
Described connecting gear is chain transmission, described connecting gear comprises chain and gear, described chain is hexagon shape, the plane at the hexagon place that described chain forms is a surface level, the place, six angles of described chain is provided with gear to support connecting gear and power transmission, and described gear is located on feet;
Described hit agency comprises motor, position sensor, worm-and-wheel gear, screw-nut body, scissors mechanism and pinion and rack, described hit agency is connected with described connecting gear, described position sensor is responded to the position of outside bead, worm-and-wheel gear, scissors mechanism, screw-nut body and pinion and rack are connected from the bottom up successively, and described motor drives described worm-and-wheel gear, scissors mechanism, screw-nut body and pinion and rack motion;
Described lifting mechanism comprises motor, feed screw nut, three gears and electromagnet, and described electromagnet is connected with gear described in one of them by feed screw nut, and described motor rotates by three gear drive feed screw nuts;
Described gathering-device funnel, the center of described gathering-device is provided with an aperture, and described aperture is connected with described lifting mechanism.
2. mechanical tower according to claim 1 is demonstrated mechanism, it is characterized in that, also comprise pass mechanism for card, described pass mechanism for card is connected with described connecting gear, hit agency, lifting mechanism respectively.
3. mechanical tower according to claim 2 is demonstrated mechanism, it is characterized in that, described pass mechanism for card comprises transverse planing machine mechanism, and described aircraft takeoffs and landings frame mechanism is crank and rocker mechanism.
4. mechanical tower according to claim 3 is demonstrated mechanism, it is characterized in that, described pass mechanism for card also comprises aircraft takeoffs and landings frame mechanism, and described aircraft takeoffs and landings frame mechanism is connected with described aircraft takeoffs and landings frame mechanism.
5. mechanical tower according to claim 4 is demonstrated mechanism, it is characterized in that, described pass mechanism for card also comprises gear drive, and described gear drive comprises three gears, three gears mesh successively, and described gear drive is connected with described aircraft takeoffs and landings frame mechanism.
6. mechanical tower according to claim 5 is demonstrated mechanism, it is characterized in that, described pass mechanism for card also comprises ratchet device, and described ratchet device has ratchet and pawl, and described ratchet device is connected with described gear drive.
7. mechanical tower according to claim 6 is demonstrated mechanism, it is characterized in that, described pass mechanism for card also comprises Geneva mechanism, and described Geneva mechanism is provided with wheel chain gearing, and described Geneva mechanism is connected with described ratchet device.
8. mechanical tower demonstration according to claim 7 mechanism, is characterized in that, described pass mechanism for card also comprises bevel gear mechanism, and described bevel gear mechanism is provided with four bevel gears up and down, and described bevel gear mechanism is connected with described Geneva mechanism.
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| CN201410285652.4A CN104167144B (en) | 2014-04-22 | 2014-06-23 | Mechanical tower demonstrates mechanism |
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| CN201410161958 | 2014-04-22 | ||
| CN201410285652.4A CN104167144B (en) | 2014-04-22 | 2014-06-23 | Mechanical tower demonstrates mechanism |
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| CN107967857A (en) * | 2017-12-22 | 2018-04-27 | 中国科学技术馆 | A kind of interactive exhibition system |
| CN111243380A (en) * | 2020-01-16 | 2020-06-05 | 遵义职业技术学院 | Teaching aid display device for mathematics education |
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Effective date of registration: 20190328 Address after: 312000 Lotus Pond No. 2, Lingzhu Village, Chengtan Town, Xinchang County, Shaoxing City, Zhejiang Province Applicant after: Yilin Machinery Factory of Chengtan Town, Xinchang County Address before: 430070 Upgraded Student Apartment, Wuhan University of Technology, Hongshan District, Wuhan City, Hubei Province, 8-624 Applicant before: Lei Kang Applicant before: Song Jianfeng Applicant before: Gao Yulong Applicant before: Dan Kaizheng Applicant before: Li Kai Applicant before: Yang Na |
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