CN206907333U - A kind of machine power is around barrier teaching aid dolly - Google Patents
A kind of machine power is around barrier teaching aid dolly Download PDFInfo
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- CN206907333U CN206907333U CN201621217657.4U CN201621217657U CN206907333U CN 206907333 U CN206907333 U CN 206907333U CN 201621217657 U CN201621217657 U CN 201621217657U CN 206907333 U CN206907333 U CN 206907333U
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Abstract
The utility model discloses a kind of machine power around barrier teaching aid dolly, dolly is by multiple " 8 " the word tracks of purely mechanic control complete independently around stake, and pilespacing can also adjust the steering angle of steering mechanism to adapt to the change of pilespacing while change, overall structures design mainly includes five broad aspects:Carriage walking Trajectory Design, the design of energy transfer mechanism, transmission mechanism design, box of tricks design and Design of Steering Mechanism.Effect of the present utility model is：Clever structure, convenient disassembly, it is easy to student to understand, experience, theory of mechanics, design, the knowwhy of manufacture view, is advantageous to improve teaching efficiency.
Description
Technical field
The utility model be it is a kind of gravitional force can be converted to mechanical energy and can be used to drive the device of carriage walking, have
Body is related to a kind of machine power that can operate with Aided Machine course teaching around barrier teaching aid dolly.
Background technology
《Theory of mechanics》It is a basic socilalizing course, is a required backbone technology basic course of most of Engineering Students
Journey.《Theory of mechanics》Teaching it is more teach visual machinery to student in the form of PPT and recognize, to improving student to machinery
Technology to get a real idea of effect undesirable.Machine power teaching aid dolly is a purely mechanic power buggy,Its own mechanism covers
《Theory of mechanics》With《Machine Design》Most content, so it is the system and device of a coordinated movement of various economic factors.Dolly is only
Need a horizontal desk can be closely to show the working condition of mechanism to student；Volume the car design and manufacturing process can swash
Send out university student and carry out scientific research and the interest explored, improve ability of engineering practice, the creativity consciousness of training student of university student,
Science and engineering college education high-quality talents are had far-reaching significance；The utility model is makes full use of the existing energy to provide simultaneously
New thinking, direction is guided for the development of future device.
The content of the invention
The purpose of this utility model is to provide a kind of machine power around teaching aid dolly is hindered, and the teaching aid vehicle structure is ingenious,
Convenient disassembly, it is easy to student to understand, experience, theory of mechanics, design, the knowwhy of manufacture view, is advantageous to improve teaching effect
Fruit.
Above-mentioned purpose is realized by following technical scheme：
The utility model is achieved like this, it includes footstock, pulley spindle, pulley, support bar, bottom plate, big bearing block,
Small bearing bracket, large straight gear, small Spur gear, big 45 ° of helical gears, small 45 ° of helical gears, front-wheel crotch, driven pulley crotch, a step cone
Axle, live axle, follower shaft, front-wheel transverse axis, front-wheel vertical shaft, camshaft, rear pendulum shaft, driving wheel, driven pulley, deflecting roller,
Cam, rear swing rod, connecting rod, spherical plain bearing rod end, front roll bar, elastic rubber band, fine-tuning nut, fine-tuning nut support, roller bearing,
Flange bearing, bearing cap.It is characterized in that：U-type groove is provided with footstock；Bearing is placed into U-type groove after coordinating installation with pulley spindle
In；Three right angle aluminium alloy support bars are connected by screw on footstock；Three support bar lower end mode connects for screw to lower shoe；
Two big bearing block and two small bearing brackets are connected with bottom plate；Large straight gear is fixed on one-level wheel shaft by holding screw；
Large helical gear is fixed on one-level wheel shaft by holding screw；Small Spur gear is fixed on live axle by holding screw；One
Level wheel shaft is assembled on small bearing bracket by a pair of bearings；Live axle is assembled to the hole of big bearing block upper end by a pair of bearings
It is interior；Driving wheel is fixed on live axle one end by holding screw, and driving dolly advances；One-level wheel shaft is roll, its coiling
Position has certain taper, ensures the smooth starting of dolly by changing kinetic moment；Front-wheel vertical shaft lower end has stepped knot
Structure, and there is screw thread in taper end；It is assembled to vehicle body by front-wheel vertical shaft vertically by a roller bearing and a flange bearing
In preformed hole, and it is fixed with bearing cap；Front-wheel is assembled on front-wheel transverse axis by bearing；Front-wheel transverse axis is screw shaped,
Unthreaded portion assembles bearing, is fixed on by nut on front-wheel crotch；Driven pulley crotch is bolted on vehicle body；From
Driving wheel mounting means is identical with front-wheel, repeats no more；Camshaft lower end has step structure, and has screw thread in taper end；It is convex
It is assembled in the preformed hole of vehicle body by wheel shaft vertically by a roller bearing and a flange bearing, and is consolidated with bearing cap
It is fixed；Cam mesopore coordinates with camshaft lower end screw thread and ladder, is installed on camshaft；Bevel pinion is fixed by holding screw
Large helical gear on camshaft upper end, with one-level wheel shaft coordinates；Swing rod is shaped as stepped, cube afterwards, and one end thickness is
Twice of the other end, both ends are drilled with unthreaded hole；Swing rod thickness end is fixed in rear pendulum shaft by holding screw afterwards, this holding screw length
Degree leaves certain surplus, to hang elastic rubber band；Pendulum shaft is assembled to the bottom of the big bearing block of driven wheel side by bearing；After put
The thin end of bar is connected, and fixed with nut through the rectangular opening on vehicle body to body bottom section with rod end bearing ball end by pin；
Front roll bar is rectangular sheet, and there is screwed hole one end, and the other end has unthreaded hole；Front roll bar screw thread nose end passes through Screw assembly to front-wheel
On vertical shaft；The other end has unthreaded hole, is connected with rod end bearing ball end by pin, and fixed with nut；Front and rear two rod end bearing
The end of thread is connected with connecting rod by screw thread, and two thread rotary orientations are on the contrary, one to be left-handed before and after connecting rod, and one is dextrorotation, pivot link
When can reach increase or shorten connecting length purpose；Fine-tuning nut support is assembled on vehicle body by screw, and position is in rear pendulum
On rear side of bar；Fine-tuning nut is connected with the screwed hole on fine-tuning nut support, be can adjust its position by rotary fine adjustment nut, is played
The effect of swing rod swing angle after restriction；Elastic rubber band one end is suspended on the holding screw of rear swing rod, and one end is suspended on right side
Tighten on bolt big bearing block upper end.Before direction standard described above is by deflecting roller direction, driven wheel side is right, footstock
Direction is upper.
1st, determination of the teaching aid dolly around barrier track
Dolly bypasses three set barriers with " 8 " word track（The L-shaped arrangement of barrier, L long sides spacing 300 ~
500mm, 300 ± 50mm of short side spacing）.One periodic is made up of two sections of tangent arcs and one section of sine curve.Adopted during right-hand rotation
Two sections of circular arc lines are carried out with transition with sine curve, improves dolly and loses stabilization because of the excessive support force deficiency of right-hand centrifugal power
Property, make dolly direction can be with smooth transition.Because there is enough support force supporting trolleys to keep stability on the left of dolly during left-hand rotation, therefore
It is mutated to obtain two sections of tangent arc tracks using circular arc direction when turning left, circular arc direction, which is mutated, effectively to shorten turnaround time
With turning to distance, realize rapid positioning and effectively reduce energy loss.Compared to two symmetrical turning track scheme tools of the program
There is the stability for not only taking into account steering but also take into account the swiftness superiority of steering., can be by changing when obstacle spacing changes
The radius and sinusoidal amplitude for becoming circular arc adjust track.
2nd, energy transfer mechanism designs
Gravitional force is converted into the kinetic energy of dolly, and used gearratio should allow torque caused by wheel slightly larger than vehicle
Friction sum, dolly is walked with a relatively low travel speed, both reach driving stability, reduce the loss of energy, again may be used
Reach maximum traveling distance.The design of energy transformation mechanism uses fixed pulley+gear mechanism in actual design, and fixed pulley is used
In the action direction for changing gravity, transferring its energy to first order wheel shaft by rope makes it produce a turning moment, then leads to
Cross the gear being fixed on the wheel shaft and power is transferred to driving wheel.And generally required in startup stage one big compared with stable operation
The torque of some, in order to solve this problem, one-level wheel shaft, namely the winding portion of roll are designed with taper by us
Circular shaft, line is wound on big end during startup, produces larger torque, and after startup, line then in small end, produces smaller torque.
3rd, transmission mechanism designs
Passing power can mainly be carried out by modes such as gear, belt, sprocket wheels.Because the series of transmission is few, transmission
Distance short can make it that the cornerite of belt transmission is smaller, easily skids during transmission, transmission accuracy is not high.Chain gear transmission is not flat enough
Surely.And gear-driven accuracy is high, as long as being made from suitable material, weight can be also reduced, shortcoming is to process comparatively
Complexity, cost are also high.It is driven in the design using gear transmission mode.
3.1st, gear ratio η and driving wheel diameter D are determined
η=5 are taken for the ease of the design processing of gear；The distance that carriage walking a cycle is walked takes S=2512mm, by
S=η π D, then driving wheel diameter is 160mm.
3.2nd, gear parameter m, Z are set
According to the overall structure of dolly, modulus m=1 of gear 1 and gear 2 is taken, the number of teeth is respectively Z1=70, Z2=
14.Counting of carriers detours the number of turns, it is known that weight falling head is h=400mm, and by pulley guiding mechanism, it exports winding length l
=800, the average diameter of preliminary design roll takes d=7mm, then roll turnning circle n1=l/ π d ≈ 36.36.Roll rotates
One circle, drive shaft turn five circles, and dolly completes a cycle, i.e. dolly can detour 30.03 circles in theory.
4. Design of Steering Mechanism
Dolly is travelled with " 8 " word track obstacle thing, to complete the go to action, must just be led to the energy that dolly converts
Cross appropriate mechanism to act on the deflecting roller of dolly, reach the purpose that control dolly turns to, while the action Ying Ling of the mechanism
Living, loss of energy is few.Bearings are used when designing steering spindle, and suitably use longer front roll bar, with minimum power just
It can be achieved to turn to, energy expenditure is less, while adds cardiac prominence wheel connecting rod to turn to dolly as drive mechanism using one and carry out
Control, this is simple in construction, easily realizes, while be easy to the later stage to be adjusted.Dolly also has an innovative point to be, rear swing rod
Stepped design is taken, rear swing rod top is fastenedly connected with rear pendulum shaft, and rear pendulum shaft is connected with bearing block using bearing, after making
Swing rod is swingable, and rod end bearing is fixed in rear swing rod bottom makes it be connected with connecting rod, and appropriate location sets a step in the middle part of rear swing rod,
The step part of swing rod makes rear swing rod put after being promoted when cam contacts with rear swing rod, at the same afterwards swing rod step movement to cam
Upper surface, put backward step in rear swing rod and contacted with upper cam surface, rear swing rod is kept same pivot angle in cam rise, it is real
The rounding of existing arc track, at the end of rise, rear swing rod and connecting rod are returned rapidly due to the elastic force of gravity and partial elastic rubber band
Position, so as to the reciprocating motion of swing rod after realizing.Swing rod utilizes lever principle afterwards, and the big row of connecting rod is realized with the small rise of cam
Journey, solve the problems, such as because vehicle body space deficiency causes connecting rod stroke deficiency.
Make swing rod return using the elasticity of elastic rubber band, influence part processing, the mechanism connection ring of controlling organization precision
Section, reach ultimate attainment in terms of reducing number of parts, reduction energy consumption.By the surface smoothness of this height of standard component, surface evenness,
So that the free gap of line face contact is small to can be ignored relative to the radial clearance of bearing.So as in whole control transmission
Uncompensable errors in link are dependent only on the precision of bearing, and this brings rising to for matter to the precision of dolly.Due to rear pendulum
It is linear contact lay between bar and cam, so frictional resistance can be with very little, corresponding energy loss is also low, and the startability of dolly obtains
Guarantee is arrived.
5. track adjustable mechanism designs
Because the small vehicle steering mechanism uses the structure of cam structure promotion swing rod, the big I of dolly orbital radius passes through
Fine-tuning nut is adjusted to realize, the degree of dividing equally of two tracks can change connecting length to realize by swivel link.Freqency fine adjustment machine at two
Structure coordinative role, the flexible variation of small wheel paths can be achieved, adapt to the obstacle that various length are set.
6. body structure and layout designs
Vehicle is three wheeler, and box of tricks should be designed with according to the requirement of Car design, during rear wheel drive, is otherwise being turned
To when due to the rotating speed of two driving wheels it is identical, turn to when two-wheeled travel distance it is identical, so as to directly affect car turn
To because necessarily having a wheel to produce skidding when turning to, car could realize steering.Meanwhile the if wheel of driving wheel
Away from excessive, the driving wheel still rolls forward when turning to, a larger longitudinal force can be produced, directly influence turning for dolly
To, thus need very big driving force just to overcome, can thus consume more energy, directly influence the walking of car away from
From in larger steering angle, even dolly can not walk.Solution to the problems described above mainly has following two methods：
1st, design and installation differential mechanism on the drive wheel, the trailing wheel of dolly two can so be realized when turning, angular speed is identical, but linear velocity
Difference, be truly realized as automobile in actual life, two wheel guide robot is excessively curved, can so solve to the full extent turn when after
The problem of wheel skids；2nd, using three-wheel right angle distributed architecture, steering front wheel is made to be alignd with a rear drive sprocket, another rear support wheel can
Free-running, eliminate the differential resistance of two trailing wheels.
Because differential mechanism also has larger frictional resistance in itself, by careful analysis and discussion, most dolly is set at last
It is calculated as three-wheel right angle distributed architecture.The factors such as the steering in view of dolly, during design should as far as possible by dolly design of centre of gravity by
The centre of nearly three wheels, ensure stability during carriage walking.
7. the selection of dolly making material
By experiment repeatedly, it is found that consume of the rigidity of dolly part to energy plays very big effect.It is nylon, organic
Although the plastics proportion such as glass is lighter, often rigidity is inadequate, and elastic larger plastics are difficult to protect in process
Machining accuracy is demonstrate,proved, the larger plastics of fragility screw thread in disassembly process is debugged easily skids.Aluminium alloy compares equivalent to for steel
Weight is small, processing characteristics, and disclosure satisfy that the rigid requirements of dolly, therefore the design mainly selects aluminium alloy as dolly
Material, such as underbody, wheel shaft, bearing block, support bar strength member.Wheel, footstock etc. can use acrylic board material.
Meet the due performance of dolly and consider economic benefit and it is easy to process in the case of, part will also be with well format
Mitigate dolly weight.
The beneficial effects of the utility model：
1. the utility model smart structural design, part is more from species, and the knowledge being related to is relatively broad, covers《Machine
Tool principle》And《Machine Design》Most of knowledge point of course.From now on《Theory of mechanics》And《Machine Design》, can in teaching
It is applied to the Link of Practice Teaching of Course Exercise.
2. the utility model in terms of energy demand prediction and function realization, can excite university student to carry out scientific research with visiting
The interest of rope, improve ability of engineering practice, the creativity consciousness of training student of university student,To the high-quality people of science and engineering college education
Just have far-reaching significance；The utility model is future device to make full use of the existing energy to provide new thinking simultaneously
Development has guided direction.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
Fig. 2 is energy conversion machine composition of the present utility model.
Fig. 3 is upward view of the present utility model.
Fig. 4 is turning machine composition of the present utility model.
Fig. 5 is the trajectory diagram of the present utility model that detours.
In figure, 1. footstocks, 2. pulley bases, 3. pulleys, 4. support bars, 5. bottom plates, 6. big bearing blocks,
7. 8. large straight gear of small bearing bracket, 9. small Spur gear, 10. big 45 ° of helical gears, 11. small 45 ° of front-wheel crotch of helical gear 12.
13. the front-wheel of 17. front-wheel transverse axis of driven pulley crotch 14. one-level wheel shaft, 15. live axle, 16. follower shaft 18. is stood
Put after the camshaft 20. of axle 19. after the cam 25. of 23. deflecting roller of pendulum shaft 21. driving wheel, 22. driven pulley 24.
The fine-tuning nut support of 28. front roll bar of bar 26. connecting rod, 27. spherical plain bearing rod end 29.
Embodiment：
Embodiment of the present utility model is described in further detail below in conjunction with brief description of the drawings, but the present embodiment and not had to
It is every to use similar structure of the present utility model and its similar change in limitation the utility model, the utility model all should be included in
Protection domain.
As shown in Figure 1,3, the utility model is such to work and implementation, and it includes footstock 1, pulley spindle 2, pulley
3, support bar 4, bottom plate 5, big bearing block 6, small bearing bracket 7, large straight gear 8, small Spur gear 9, big 45 ° of helical gears 10, small 45 ° tiltedly
Gear 11, front-wheel crotch 12, driven pulley crotch 13, one-level wheel shaft 14, live axle 15, follower shaft 16, front-wheel transverse axis 17 are preceding
Take turns vertical shaft 18, camshaft 19, rear pendulum shaft 20, driving wheel 21, driven pulley 22, deflecting roller 23, cam 24, rear swing rod 25, connecting rod
26, spherical plain bearing rod end 27, front roll bar 28, elastic rubber band, fine-tuning nut, fine-tuning nut support 29, roller bearing, flange side axis
Hold, bearing cap.It is characterized in that：U-type groove is provided with footstock；Bearing is placed into U-type groove after coordinating installation with pulley spindle；Three straight
Aluminum corner brace alloy support bar is connected by screw on footstock；Three support bar lower end mode connects for screw to lower shoe；Connect on bottom plate
It is connected to two big bearing block and two small bearing brackets；Large straight gear is fixed on one-level wheel shaft by holding screw；Large helical gear
It is fixed to by holding screw on one-level wheel shaft；Small Spur gear is fixed on live axle by holding screw；One-level wheel shaft leads to
A pair of bearings is crossed to be assembled on small bearing bracket；Live axle is assembled to by a pair of bearings in the hole of big bearing block upper end；Driving
Wheel is fixed on live axle one end by holding screw, and driving dolly advances；One-level wheel shaft is roll, and its coiling position has
Certain taper, ensure the smooth starting of dolly by changing kinetic moment；Front-wheel vertical shaft lower end has step structure, and thin
End has screw thread；It is assembled in the preformed hole of vehicle body by front-wheel vertical shaft vertically by a roller bearing and a flange bearing,
And it is fixed with bearing cap；Front-wheel is assembled on front-wheel transverse axis by bearing；Front-wheel transverse axis is screw shaped, in unthreaded portion
Bearing is assembled, is fixed on by nut on front-wheel crotch；Driven pulley crotch is bolted on vehicle body；Driven pulley installation side
Formula is identical with front-wheel, repeats no more；Camshaft lower end has step structure, and has screw thread in taper end；Camshaft passes through one
It is assembled in the preformed hole of vehicle body by roller bearing and a flange bearing vertically, and is fixed with bearing cap；In cam
Hole coordinates with camshaft lower end screw thread and ladder, is installed on camshaft；Bevel pinion is fixed on camshaft by holding screw
Large helical gear on upper end, with one-level wheel shaft coordinates；Swing rod is shaped as stepped, cube afterwards, and one end thickness is the other end
Twice, both ends are drilled with unthreaded hole；Swing rod thickness end is fixed in rear pendulum shaft by holding screw afterwards, and this holding screw length leaves one
Surplus is determined, to hang elastic rubber band；Pendulum shaft is assembled to the bottom of the big bearing block of driven wheel side by bearing；The thin end of swing rod is worn afterwards
The rectangular opening crossed on vehicle body is connected, and fixed with nut to body bottom section with rod end bearing ball end by pin；Front roll bar is
There is screwed hole rectangular sheet, one end, and the other end has unthreaded hole；Front roll bar screw thread nose end passes through on Screw assembly to front-wheel vertical shaft；
The other end has unthreaded hole, is connected with rod end bearing ball end by pin, and fixed with nut；The front and rear two rod end bearings end of thread with
Connecting rod is connected by screw thread, and for two thread rotary orientations on the contrary, one to be left-handed, one is dextrorotation before and after connecting rod, can reach during pivot link
Increase or shorten the purpose of connecting length；Fine-tuning nut support is assembled on vehicle body by screw, and position is on rear side of rear swing rod；It is micro-
Adjust nut to be connected with the screwed hole on fine-tuning nut support, its position can adjust by rotary fine adjustment nut, put after playing restriction
The effect of bar swing angle；Elastic rubber band one end is suspended on the holding screw of rear swing rod, and one end is suspended on the big bearing block in right side
Tighten on bolt upper end.Before direction standard described above is by deflecting roller direction, driven wheel side is the right side, and footstock direction is
On.
As shown in Fig. 2, on the dolly of three-wheel right angle distributed architecture, a counterweight is hung in the height of permission.Counterweight exists
Held stationary falls on the dolly of curvilinear motion, then needs effect of the position-limit mechanism to its limited location with holding.Pulley Guiding machine
The torque that structure passes over counterweight, it is 1 by there is two diameter ratios on pulley：2 pulley groove is reduced to the power F of output
The 1/2 of Weight gravity, the length of output coiling is doubled, while reduce the requirement to next stage diameter of axle size.Gear
The power F that pulley exports is reduced to the 1/6 of Weight gravity by mechanism again, fully improves the utilization rate of Weight gravity potential energy；
The modulus of gear is 1, there is higher registration, is driving stationarity increase.
As shown in Figure 3, Figure 4, large helical gear and first order spur gear are coaxial, have the same period of motion；Cam mechanism
It is to heart disk cam mechanism, cam planes and bevel pinion co-planar, is each perpendicular to camshaft；Camshaft and one-level wheel shaft
Spatial vertical is intersected, and two axles pass through a pair of sizes, 45 ° of Helical gear Transmissions；When cam mechanism rotates, its half stroke not with it is rear
Swing rod contacts, and rear swing rod is tensed by elastic rubber band, is in contact with fine setting screw rod, the thickened section split-phase of another half trip and rear swing rod
Contact, and fine-tuning nut is pushed away, it is swung forward, until the thickening of rear swing rod and the upper surface of cam,
For linear contact lay；Cam mechanism rotates a circle, and dolly covers a stroke；Cam is shaped with 45# steel plates linear cutter
's.Its characteristic effect is：Extremely low frictional resistance, energy loss are few；Very high transmission accuracy simplifies structure. 1）From transmission
For angle, again to steering mechanism from cam to push rod, it is seen that motion link gap also only occur in inside cylindrical roller
Bearing on, i.e., gap of being moved about existing for bearing inner race and outer ring.Precision will be done much bearing for more general part in itself, institute
With drive gap very little or the higher bearing of accuracy class can also be matched.2）For from processing technology, cam is to use line
Cutting fast wire winding shapes.The similarity and surface roughness of its contour curve also have higher accuracy value, by the later stage
Processing can further improve its performance.3）For from selection, the hardness of steel is higher, wears and becomes during reuse
Shape amount is small.Therefore its transmission accuracy performance can keep longer service life.
Claims (1)
1. a kind of machine power is around barrier teaching aid dolly, it includes footstock, pulley spindle, pulley, support bar, bottom plate, and big bearing block is small
Bearing block, large straight gear, small Spur gear, big 45 ° of helical gears, small 45 ° of helical gears, front-wheel crotch, driven pulley crotch, a step cone
Axle, live axle, follower shaft, front-wheel transverse axis, front-wheel vertical shaft, camshaft, rear pendulum shaft, driving wheel, driven pulley, deflecting roller,
Cam, rear swing rod, connecting rod, spherical plain bearing rod end, front roll bar, elastic rubber band, fine-tuning nut, fine-tuning nut support, roller bearing,
Flange bearing, bearing cap；It is characterized in that：Swing rod is shaped as stepped, cube afterwards, and one end thickness is the two of the other end
Times, both ends are drilled with unthreaded hole；Swing rod thickness end is fixed in rear pendulum shaft by holding screw afterwards, and this holding screw length leaves necessarily
Surplus, to hang elastic rubber band；Pendulum shaft is assembled to the bottom of the big bearing block of driven wheel side by bearing；The thin end of swing rod passes through afterwards
Rectangular opening on vehicle body is connected, and fixed with nut to body bottom section with rod end bearing ball end by pin；Front roll bar is square
There is screwed hole shape flake, one end, and the other end has unthreaded hole；Front roll bar screw thread nose end passes through on Screw assembly to front-wheel vertical shaft；Before
Swing rod unthreaded hole end is connected with rod end bearing ball end by pin, and is fixed with nut；The front and rear two rod end bearings end of thread and company
Bar is connected by screw thread, and for two thread rotary orientations on the contrary, one to be left-handed, one is dextrorotation before and after connecting rod, can reach increasing during pivot link
Purpose that is long or shortening connecting length；Fine-tuning nut support is assembled on vehicle body by screw, and position is on rear side of rear swing rod；Fine setting
Nut is connected with the screwed hole on fine-tuning nut support, and its position is can adjust by rotary fine adjustment nut, plays swing rod after restriction
The effect of swing angle；Elastic rubber band one end is suspended on the holding screw of rear swing rod, and one end is suspended on the big bearing block in right side
Tighten on bolt at end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621217657.4U CN206907333U (en) | 2016-11-12 | 2016-11-12 | A kind of machine power is around barrier teaching aid dolly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621217657.4U CN206907333U (en) | 2016-11-12 | 2016-11-12 | A kind of machine power is around barrier teaching aid dolly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206907333U true CN206907333U (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621217657.4U Expired - Fee Related CN206907333U (en) | 2016-11-12 | 2016-11-12 | A kind of machine power is around barrier teaching aid dolly |
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| Country | Link |
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| CN (1) | CN206907333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379286A (en) * | 2019-07-22 | 2019-10-25 | 焦作师范高等专科学校 | A kind of mechanism kinematic model suitable for teaching |
-
2016
- 2016-11-12 CN CN201621217657.4U patent/CN206907333U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379286A (en) * | 2019-07-22 | 2019-10-25 | 焦作师范高等专科学校 | A kind of mechanism kinematic model suitable for teaching |
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