CN209083919U - A kind of speed change gear of science popularization teaching - Google Patents
A kind of speed change gear of science popularization teaching Download PDFInfo
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- CN209083919U CN209083919U CN201821803041.4U CN201821803041U CN209083919U CN 209083919 U CN209083919 U CN 209083919U CN 201821803041 U CN201821803041 U CN 201821803041U CN 209083919 U CN209083919 U CN 209083919U
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- gear
- output shaft
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Abstract
The utility model provides a kind of speed change gear of science popularization teaching, including frame body, across the frame body and the input shaft and output shaft that are mounted side by side on the frame body, it connects the direct current generator of the input shaft and the three-color block being located on the outside of the frame body on the output shaft is set, it is sequentially installed with 5 groups of gear sets on the input shaft and the output shaft respectively from left to right, the gear set includes the driving gear being mounted on the input shaft and the driven gear being mounted on the output shaft, the synchronizer on the output shaft is stirred to be able to for the output shaft connecting with driven gear.The speed change gear of the science popularization teaching of utility model further includes one group of reverse gear group.Speed change gear is the speed change gear of production and observation, operation easy to process, convenient for the transmission effect of the gear set of comparison different parameters, the meaning of promotion science popularization teaching.
Description
Technical field
The utility model relates to mechanical device and technical field of transportation, particularly relate to a kind of gear shift dress of science popularization teaching
It sets.
Background technique
Currently, existing speed change gear is since the limitation of its complexity and installation that process is (in automobile
Gearbox for) be often not easy to science popularization teaching, while existing speed change gear not by gear parameter to speed change fill
The influence set is showed.
Existing speed change gear production and processing process is more, higher cost, and due to existing speed change gear
Complexity will lead to its internal structure composition, principle knowledge and operating process if being directly applied in science popularization teaching
Intuitively it clearly can not be showed and be understood, also just lose the meaning of science popularization teaching；And it is applied to science popularization teaching at present
Geared system or speed change gear, structure is again more single, and it is not strong to show effect.
In science and technology museum, there are many exhibition items relevant to gear.These exhibition item main presentations apply gear
Mechanical device, simple gear drive principle and concept allow spectators to understand gear in operation, experience of the process and are able to carry out biography
It is dynamic, and how to work in a device, but few exhibition items show the exhibition item of influence of the gear parameter to gear performance.It is opening up
Show that gear shift is driven, in the exhibition item of gear ratio, such as surprised transmission ratio, spectators can understand by experience, observation exhibition item
The of different sizes of gear will affect gear velocity of rotation, but for the calculating of the parameter, transmission ratio that specifically influence transmission ratio according to
According to not showing excessively.In addition, the most daily device of current social application gear shift, gear ratio is automobile variable speed
Case, the real principle that spectators can not be allowed to understand automobile variable speed, shift gears, reverse gear only by existing exhibition item.
Utility model content
The purpose of this utility model is to provide a kind of speed change gears of science popularization teaching, for solving in the prior art
Geared system applied to Popular Science Education can not show the parameters such as transmission ratio to the problem of gear-driven influence.
To achieve the above object, the utility model the following technical schemes are provided:
A kind of speed change gear of science popularization teaching, including frame body, across the frame body and it is mounted side by side on the frame body
On input shaft and the direct current generator and being arranged on the output shaft of output shaft, the connection input shaft be located at outside the frame body
It is sequentially installed with 5 groups of gear sets, the gear set on the three-color block of side, the input shaft and the output shaft respectively from left to right
Including the driving gear being mounted on the input shaft and the driven gear being mounted on the output shaft, the output shaft is stirred
On synchronizer be able to for the output shaft connecting with driven gear.
Wherein, the frame body includes that bottom plate, the right baffle-plate that the bottom plate left and right ends are arranged in and right shell body and setting exist
For connecting the rear baffle of the right baffle-plate and the right shell body on the bottom plate, the input shaft and the output shaft are both passed through
The right baffle-plate and the right shell body.
Wherein, the input shaft is connect with the direct current generator by shaft coupling.
Wherein, 5 groups of gear sets respectively are first gear group, second gear group, three gear gear sets, four gears from left to right
Gear set and five gear gear sets；
The transmission ratio of the first gear group is 3:2；
The transmission ratio of the second gear group is 7:3；
The transmission ratio of the three gears gear set is 3:2；
The transmission ratio of the four gears gear set is 2:3；
The transmission ratio of the five gears gear set is 3:7.
Wherein, the input shaft is installed on the right baffle-plate and the right shell body by snap ring；
The output shaft is mounted on the right baffle-plate and the right shell body by snap ring.
Wherein, further include the jackshaft being arranged between the input shaft and the output shaft, the input shaft, it is described in
Between reverse gear group is installed on axis and the output shaft, the reverse gear group is located at the five gear gear set and the right gear
Between plate.
Wherein, the modulus of the gear of the first gear group is 2；
The modulus that the second gear group, the three gears gear set, the four gear gear set and described five keep off gear set is equal
It is 1.
Wherein, the transmission ratio of the reverse gear group is 5:2.
Wherein, the synchronizer includes the synchronizer being arranged between the first gear group and the second gear group
One, be arranged in it is described three gear gear set and it is described four gear gear set between synchronizer two and setting it is described five gear gear set with
Synchronizer three between the reverse gear group.
The above-mentioned technical proposal of the utility model has the beneficial effect that:
In above scheme, the speed change gear of the science popularization teaching of utility model is easy to process, production and observation, operation
Speed change gear, convenient for compare different parameters gear set transmission effect, promoted science popularization teaching meaning.
Detailed description of the invention
Fig. 1 is the speed change gear structural schematic diagram that the science popularization of the utility model is imparted knowledge to students；
Fig. 2 is the structural schematic diagram of the driving gear for the speed change gear that the science popularization of the utility model is imparted knowledge to students；
Fig. 3 is the structural schematic diagram of the driven gear for the speed change gear that the science popularization of the utility model is imparted knowledge to students；
Fig. 4 is the structural schematic diagram of the synchronizer for the speed change gear that the science popularization of the utility model is imparted knowledge to students.
Appended drawing reference:
1, right baffle-plate；2, rear baffle；3, bottom plate；4, shift fork；5, synchronizer；51, synchronizer one；52, synchronizer two；53,
Synchronizer three；6, gear set is kept off；7, reverse gear group；8, right shell body；9, output shaft；10, jackshaft；11, shaft coupling；12, straight
Galvanic electricity machine；13, bracket；14, battery pack；15, intermediate side plate；16, five gear gear set；17, three gear gear set；18, second gear
Group；19, first gear group；20, snap ring；21, three-color block；22, frame body；23, input shaft；24, driving gear；25, driven tooth
Wheel.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model can not show the parameters pair such as transmission ratio for the existing geared system applied to Popular Science Education
The problem of gear-driven influence, provides a kind of speed change gear of science popularization teaching.
As shown in Figs 1-4, the utility model embodiment provides a kind of speed change gear of science popularization teaching, including frame
Body 22, across the frame body 22 and the input shaft 23 and output shaft 9, the connection input shaft that are mounted side by side on the frame body 22
23 direct current generator 12 is located at the three-color block 21 in 22 outside of frame body, the input shaft 23 with being arranged on the output shaft 9
Be sequentially installed with 5 groups of gear sets on the output shaft 9 respectively from left to right, the gear set includes being mounted on the input shaft
Driving gear 24 on 23 and the driven gear 25 being mounted on the output shaft 9, stir the synchronizer 5 on the output shaft 9
It is able to for the output shaft 9 connecting with driven gear 25.
The direct current generator 12 of the speed change gear of the science popularization teaching of the utility model rotates, 23 turns of the input shaft
Dynamic, the driving gear 24 on the input shaft 23 drives the driven gear 25 on the output shaft 9 to rotate, and stirs the output shaft
Synchronizer 5 on 9 makes the driven gear 25 and driven axis connection, and the rotation of driven gear 25 drives the output shaft 9
Rotation, the rotation of output shaft 9 drive the three-color block 21 to rotate.By stir the synchronizer 5 make the output shaft with
Driven gear 25 in any one group of gear set in 5 groups of gear sets connects, and observes the drive characteristic of gear.
The design of the speed change gear of the science popularization teaching of the utility model reaches better science popularization effect, designs and makes
Production easy to process, installation be simple, easy to carry, can close-ups, can operate in person, and show different gear parameter shadows
Loud speed change gear uses for science and technology center or school's expansion gear's teaching activity.
The production of all parts of the speed change gear of the science popularization teaching of the utility model utilizes laser cutting technique
And 3D printing technique, reduction are manufactured difficulty, are easily installed.
The direct current generator 12 of the speed change gear of the science popularization teaching of the utility model, which is placed, connects the right shell body 8
Bracket 13 on, the bracket 13 be additionally provided with for the direct current generator 12 power supply battery pack 14.The battery pack 14 passes through
Gum velcro connects the bracket 13.
Wherein, the frame body 22 include bottom plate 3, be arranged in 3 left and right ends of bottom plate right baffle-plate 1 and right shell body 8 and
It is arranged on the bottom plate 3 for connecting the rear baffle 2 of the right baffle-plate 1 and the right shell body 8, the input shaft 23 and described
Output shaft 9 both passes through the right baffle-plate 1 and the right shell body 8.
Wherein, the input shaft 23 is connect with the direct current generator 12 by shaft coupling 11.
Wherein, 5 groups of gear sets respectively are first gear group 19 from left to right, second gear group 18, three keeps off gear set
17, four gear gear sets 6 and five gear gear sets 16；
The transmission ratio of the first gear group 19 is 3:2；
The transmission ratio of the second gear group 18 is 7:3；
The transmission ratio of the three gears gear set 17 is 3:2；
The transmission ratio of the four gears gear set 6 is 2:3；
The transmission ratio of the five gears gear set 16 is 3:7.
Wherein, the modulus of the gear of the first gear group is 2；
The second gear group 18, the three gears gear set 17, the four gear gear set 1 and described five keep off gear set 16
Modulus is 1.
The first gear group 19, the second gear group of the speed change gear of the science popularization teaching of the utility model
18, the gear in the three gears gear set 17, the four gear gear set 6 and the five gears gear set 16 is fixed on by snap ring 20
On the input shaft 23 and the output shaft 9.
Center between the input shaft and the output shaft of the speed change gear of the science popularization teaching of the utility model
Away from for 50mm, the driving gear of the first gear group 19 and the number of teeth of driven gear are respectively 20 and 30；The second gear
The driving gear of group 18 and the number of teeth of driven gear are respectively 30 and 70；The driving gear and driven tooth of the three gears gear set 17
The number of teeth of wheel is respectively 40 and 60；The driving gear of the four gears gear set 6 and the number of teeth of driven gear are respectively 60 and 40；Institute
The number of teeth of the driving gear and driven gear of stating five gear gear sets 16 is respectively 70 and 30.Stir the synchronizer 5 make it is described
When the driven gear of first gear group 19 is connect with the output shaft 9, gear when observable module is 2, transmission ratio is 3:2
Drive characteristic stirs the synchronizer 5 again and the driven gear of the three gears gear set 17 is connect with the output shaft 9
When, observable modulus is 1, rotation is than the drive characteristic for the gear for being 3:2, and comparison can be observed that transmission ratio is identical, reference circle is straight
The drive characteristic of the different first gear group 19 of diameter and the three gears gear set 17.The synchronizer 5 is stirred again to make
When the driven gear of the second gear group 18 is connect with the output shaft 9, observable module is 1, transmission ratio 7:3
When gear drive characteristic, compare it is described three gear gear set 17 and the second gear group 18 gear drive characteristics, can be intuitive
Understand the three gear gear set 17 and the gear drive spy of the second gear group 18 that modulus is identical, reference diameter is different
Property.Identical method stirs the synchronizer 5, so that the output shaft and the four gear gear set 6 or the five gears gear set
16 driven gear connection, observes its drive characteristic.
Wherein, the input shaft 23 is installed in the right baffle-plate 1 and the right shell body 8 by snap ring 20；
The output shaft 9 is mounted in the right baffle-plate 1 and the right shell body 8 by snap ring 20.
It wherein, further include the jackshaft 10 being arranged between the input shaft 23 and the output shaft 9, the input shaft
23, reverse gear group 7 is installed on the jackshaft 10 and the output shaft 9,7 groups of the reverse gear are located at the five gears tooth
Between wheel group 16 and the right shell body 8.
The both ends of the jackshaft 10 of the speed change gear of the science popularization teaching of the utility model are fixed on the right gear
On plate 8 and intermediate side plate 15, the bottom plate 3 and the right baffle-plate 1, the right shell body 8, the rear baffle 2, the intermediate side plate
15 are all made of the interpolation connection type of interference fit；The input shaft 23 and the input shaft 9 are all made of the shape of " ten " word axis
Formula simplifies processing and manufacturing difficulty using the connection type of interpolation.
Wherein, the transmission ratio of the reverse gear group 7 is 5:2.
The reverse gear group 7 of the speed change gear of the science popularization teaching of the utility model is located on the input shaft 23
Driving gear the number of teeth be 20, the number of teeth of intermediate gear on the jackshaft 10 is 15, is located on the output shaft 9
The number of teeth of driven gear be 50, the intermediate gear on the jackshaft 10 only plays the role of conversion direction, it is described in
Between gear can also become idle pulley.
Wherein, the synchronizer 5 is same between the first gear group 19 and the second gear group 18 including being arranged in
Step device 1, the synchronizer 2 52 being arranged between the three gear gear set 17 and the four gears gear set 6 and setting are described
Synchronizer 3 53 between five gear gear sets 16 and the reverse gear group 7.
The synchronizer 5 of the speed change gear of the science popularization teaching of the utility model can be arranged after described by stirring
Shift fork 4 on baffle 2 makes the output shaft 9 connect driven gear, and the shift fork includes shift fork one, shift fork two and shift fork three.
The shift fork one stirred on the connection synchronizer 1 to the left makes the driven gear of the first gear group 19 and the output
Axis 9 connects；Stir to the right connect the shift fork one on the synchronizer 1 make the driven gear of the second gear group 18 with
The output shaft 9 connects；Stir to the left connect the shift fork two on the synchronizer 2 52 make the three gears gear set 17 from
Moving gear is connect with the output shaft 9；The shift fork two connected on the synchronizer 2 52 is stirred to the right makes the four gears gear
The driven gear of group 6 is connect with the output shaft 9；The shift fork three connected on the synchronizer 3 53 is stirred to the left makes described five
The driven gear of gear gear set 16 is connect with the output shaft 9；Stirring the shift fork three connected on the synchronizer 3 53 to the right makes
The driven gear for obtaining the reverse gear group 7 is connect with the output shaft 9.Driven gear on the output shaft 9 with it is described defeated
Between shaft 9 have gap, if the connection without the synchronizer 5, the output shaft 9 can not with it is driven on the output shaft 9
Gear connection.The connection between driven gear on the synchronizer 5 and the output shaft 9 is by the synchronizer 5
4 detents are inserted into the realization of 4 card slots on the driven wheel.
The operation of the speed change gear of the science popularization teaching of the utility model is as follows: powering on switch, the direct current
Machine 12 rotates, and the direct current generator 12 drives the input shaft 23 to rotate by the connecting shaft 11, and the input shaft 23 rotates
Drive the first gear group 19, the second gear group 18, the three gears gear set 17, the four gears gear set 6 and described
Driving gear rotation in five gear gear sets 16, at this point, the first gear group 19, the second gear group 18, three gear
Driven gear in gear set 17, the four gear gear set 6 and the five gears gear set 16 is also according to respective transmission
Than being rotated.The synchronizer 5 is stirred, so that different driven gears 25 is connect with the output shaft 9, driven gear rotation
The output shaft 9 is driven to rotate, the rotation of output shaft 9 drives the three-color block 21 to rotate.Such as: it is stirred described in connection to the left
Shift fork three on synchronizer 3 53 connect the driven gear of the five gears gear set 16 with the output shaft 9, at this point, institute
Three-color block 21 is stated to be rotated according to the transmission ratio of the five gears gear set 16.The synchronizer 5 is stirred, so that a gear
Gear set 19, the second gear group 18, the three gears gear set 17, the four gear gear set 6 and the five gears gear set 16
In driven gear 25 connect respectively with the output shaft 9, observe 5 groups of gear sets drive characteristic.It stirs to the right described in connection
Shift fork three on synchronizer 3 53 connect the driven gear of the reverse gear group 7 with the output shaft 9, observes the tooth that reverses gear
The drive characteristic of wheel.
The speed change gear that science popularization by observing the utility model is imparted knowledge to students can intuitively observe that gear correlation is joined
Several concepts, such as the facewidth, transverse tooth thickness, groove width, the number of teeth, modulus, reference circle, outside circle and root circle；Observation understands the biography of gear
Dynamic characteristic, the principle that observation understands the principle of The gear deceleration and gear accelerates；Understand.Observation understands idle pulley and does not change transmission system
Transmission ratio, only change system transmission direction；Observation understands modulus, transmission ratio and reference diameter to gear-driven shadow
It rings.
In above scheme, the speed change gear of the science popularization teaching of the utility model is easy to process, produces and observes, operation
Speed change gear, convenient for compare different parameters gear set transmission effect, promoted science popularization teaching meaning.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
In the description of the present invention, it should be understood that the orientation of the instructions such as term " on ", " one end " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is set
Have ", " connection " shall be understood in a broad sense.It for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
It, can also be indirectly connected through an intermediary to be to be connected directly.Being fixedly connected can be to weld, be threadedly coupled and step up etc. often
See technical solution.For the ordinary skill in the art, above-mentioned term can be understood in the utility model with concrete condition
In concrete meaning.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (9)
1. a kind of speed change gear of science popularization teaching, which is characterized in that including frame body, across the frame body and be mounted side by side on
The direct current generator of input shaft and output shaft, the connection input shaft on the frame body and setting are located at institute on the output shaft
The three-color block on the outside of frame body is stated, is sequentially installed with 5 groups of gear sets, institute respectively from left to right on the input shaft and the output shaft
Stating gear set includes the driving gear being mounted on the input shaft and the driven gear being mounted on the output shaft, and stirs institute
The synchronizer on output shaft is stated to be able to for the output shaft connecting with driven gear.
2. the speed change gear of science popularization teaching as described in claim 1, which is characterized in that the frame body includes bottom plate, sets
It sets and is used to connect the right baffle-plate and institute on the bottom plate in the right baffle-plate and right shell body of the bottom plate left and right ends and setting
The rear baffle of right shell body is stated, the input shaft and the output shaft both pass through the right baffle-plate and the right shell body.
3. the speed change gear of science popularization teaching as described in claim 1, which is characterized in that the input shaft and the direct current
Motor is connected by shaft coupling.
4. the speed change gear of science popularization as claimed in claim 2 teaching, which is characterized in that 5 groups of gear sets from left to right according to
Secondary is respectively first gear group, second gear group, three gear gear sets, four gear gear sets and five gear gear sets；
The transmission ratio of the first gear group is 3:2；
The transmission ratio of the second gear group is 7:3；
The transmission ratio of the three gears gear set is 3:2；
The transmission ratio of the four gears gear set is 2:3；
The transmission ratio of the five gears gear set is 3:7.
5. the speed change gear of science popularization teaching as claimed in claim 2, which is characterized in that the input shaft is pacified by snap ring
It fills on the right baffle-plate and the right shell body；
The output shaft is mounted on the right baffle-plate and the right shell body by snap ring.
6. the speed change gear of science popularization teaching as claimed in claim 4, which is characterized in that further include being arranged in the input
Jackshaft between axis and the output shaft is equipped with reverse gear on the input shaft, the jackshaft and the output shaft
Group, the reverse gear group are located between the five gear gear set and the right shell body.
7. the speed change gear of science popularization teaching as claimed in claim 6, which is characterized in that the gear of the first gear group
Modulus be 2；
The modulus that the second gear group, the three gears gear set, the four gear gear set and described five keep off gear set is 1.
8. the speed change gear of science popularization teaching as claimed in claim 6, which is characterized in that the transmission of the reverse gear group
Than for 5:2.
9. the speed change gear of science popularization teaching as claimed in claim 7, which is characterized in that the synchronizer includes that setting exists
Synchronizer one, setting between the first gear group and the second gear group is in the three gear gear set and the four gears tooth
Synchronizer two between wheel group and the synchronizers three being arranged between the five gear gear set and the reverse gear group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821803041.4U CN209083919U (en) | 2018-11-02 | 2018-11-02 | A kind of speed change gear of science popularization teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821803041.4U CN209083919U (en) | 2018-11-02 | 2018-11-02 | A kind of speed change gear of science popularization teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209083919U true CN209083919U (en) | 2019-07-09 |
Family
ID=67122387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821803041.4U Active CN209083919U (en) | 2018-11-02 | 2018-11-02 | A kind of speed change gear of science popularization teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209083919U (en) |
-
2018
- 2018-11-02 CN CN201821803041.4U patent/CN209083919U/en active Active
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