CN206293058U - A kind of tester for studying moving of car rule - Google Patents
A kind of tester for studying moving of car rule Download PDFInfo
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- CN206293058U CN206293058U CN201621240810.5U CN201621240810U CN206293058U CN 206293058 U CN206293058 U CN 206293058U CN 201621240810 U CN201621240810 U CN 201621240810U CN 206293058 U CN206293058 U CN 206293058U
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- dolly
- tester
- line slideway
- wheel shaft
- moving
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Abstract
The utility model is related to a kind of tester for studying moving of car rule, belongs to teaching experiment equipment technical field.Including dolly, base, also include the dismountable line slideway being fixed on base, it is respectively arranged on the front apron at line slideway two ends, backboard and two light electric switches that can be moved axially along line slideway both sides being arranged at intervals in the middle part of line slideway, dolly is set on line slideway, front apron fixes bolster towards the side of dolly, its side fixed block for deviating from dolly, dolly front end is provided with draught line, when moving of car, draught line and line slideway diameter parallel simultaneously overlap pulley and extend towards vertical lower section, its end fixed traction block, dolly top is provided with the stopping means for spacing balancing weight, its bottom is provided with the adjusting means for adjusting number of rollers.Not only measuring accuracy is high for the tester, and can study the relation of small vehicle speed and pulling force, rubbing surface, dolly quality, dolly and rubbing surface contact area.
Description
Technical field
The present invention relates to a kind of tester for studying moving of car rule, belong to teaching experiment equipment technical field.
Background technology
In traditional education activities, to study the laws of motion, tape recording dolly is generally pulled using dotted timer
The distance between motion conditions, measurement each point are more at present to be tested using timer, ruler so as to draw a conclusion, error
It is very big.Also, the tester of the existing demonstration characteristics of motion is research pulling force, dolly quality, frictional force to moving of car shape mostly
The influence of state, the movement relation of this factor of contact area and dolly is not studied.
The content of the invention
It is an object of the invention to：Regarding to the issue above, there is provided a kind of tester, not only measuring accuracy is high, Er Qieke
To study the relation of small vehicle speed and pulling force, rubbing surface, dolly quality, dolly and rubbing surface contact area, a kind of equipment is various
Using, it is easy to use, it is simple to operate.
In order to reach object above, technical scheme is as follows：A kind of experiment for studying moving of car rule
Device, including dolly, base, it is characterised in that：Also include the dismountable line slideway being fixed on base, be respectively arranged on straight line
The front apron at guide rail two ends, backboard and be arranged at intervals in the middle part of line slideway two can axially move along line slideway both sides
Dynamic light electric switch, sets dolly on the line slideway, the front apron fixes bolster towards the side of dolly, and it deviates from small
The side fixed block of car, the dolly front end is provided with draught line, when moving of car, the draught line and line slideway axis
Parallel and extend towards vertical lower section through pulley, its end fixed traction block, the dolly top is provided with for spacing balancing weight
Stopping means, its bottom is provided with the adjusting means for adjusting number of rollers.
Dolly moves along a straight line along line slideway, and line slideway is detachable, when using, can be rubbed according to needing to choose difference
The guide rail in wiping face, the relation for studying frictional force and moving of car.Traction force direction is consistent with moving of car direction, sliding
Take turns for keeping traction force direction constant, to ensure to test accuracy.Two smooth electric switches can measure dolly in a segment distance
Run duration, so as to draw the movement velocity of dolly, photoelectricity door sends the data to collector, then transmits to computer, shows
Measurement result is shown.
Further, the dolly bottom is provided with some rollers to being connected with wheel shaft by bearing, and wheel shaft two ends have
Card has the collar being adapted therewith in draw-in groove, the draw-in groove, and elongated hole is provided with correspondence collar position on the cart base plate；It is described
Stage clip that is that wheel shaft top is provided with vertical force and being abutted with wheel shaft, the adjusting means is located at cart base plate top, including pushes away
Pull bar and the sliding block for being fixed on pull bar end, the sliding block upper surface is provided with the stopper slot matched with wheel shaft, when sliding block card
When between wheel shaft and cart base plate, in wheel shaft insertion stopper slot, when sliding block is extracted out, the roller of dolly contacts to earth, the collar
In embedded elongated hole.
Roller is connected by bearing with wheel shaft, and during moving of car, bearing is rotated and wheel shaft is not rotated.Wheel shaft top is provided with pressure
Spring, stage clip abuts wheel shaft, continuously applies vertical downward power, it is ensured that roller can land all the time.Card is additionally provided with wheel shaft
Circle, when wheel shaft is pushed at the position of cart base plate by stage clip, in the elongated hole on collar insertion base plate, plays restriction wheel shaft
The effect of position, it is ensured that dolly even running.Collar can use the collar of ring-type collar or C-shaped collar, C-shaped to be easy to peace
Dress.When needing to reduce trolley idler wheels quantity, pull bar is promoted so that sliding block insertion wheel shaft bottom, by the upward jack-up of wheel shaft, then
Roller is to leave ground in vacant state, and stopper slot is additionally provided with sliding block, and wheel shaft is just embedded in stopper slot, is risen to a certain extent
Position-limiting action.Sliding block is shape of the section in approximate L-shaped, not only has the horizontal component of base plate, also with convex
The vertical portion for rising, can be set directly between two adjacent wheel shafts, and dolly need not be also detached without departing from dolly, so make
Test carriage more integration, integration are obtained, excessive assembling parts process is saved.In experimentation, can be pushed away by push-and-pull
Pull bar changes experiment condition, probes into the relation of dolly wheel and dolly friction.
Further, balancing weight quality span is 0g~100g, and guiding piece quality span is 10g~50g.Through
Inventor's test of many times, the weight range meets the completion demonstration on the line slideway of certain length, and for example 20cm to 80cm is long
In the range of degree.If dolly and balancing weight quality are excessive, the situation that guiding piece is difficult to pull dolly is likely to occur, if guiding piece weight
Amount is excessive, then dolly is likely to occur the situation of unstability in motion process, so suitable pulling force and suitable dolly counterweight can
To improve the accuracy of experiment, experimental error is reduced.
Further, the front apron is provided with wire casing, and the draught line is overlapped on pulley through wire casing.In order to play
Preferable barrier effect, front apron may set higher, now, wire casing be opened up on front apron, then draught line can hang
Sky passes through wire casing, can not only keep dolly traction force direction consistent with the direction of motion, and draught line is not contacted with wire casing, is kept away
Exempt from the influence of frictional force, reduce experimental error.
Further, scale patch is provided with the base vertically.On base scale patch be used for indicate two smooth electric switches it
Between distance, when using, to reach preferable measurement effect, can be according to the putting position for needing to select two smooth electric switches and the two it
Between apart from length.
Further, the line slideway is fixed on base by geometrical clamp.Geometrical clamp clamping rail, prevents it small
Skew, mobile, influence experiment accuracy in car motion process.
Further, the smooth electric switch is anchored on base by fastener.Realized by installing or dismantling fastener
The movement and fixation of light electric switch.
Further, the bolster is buffer spring.Buffer spring is cheap and with preferable buffering effect.
Advantages of the present invention is as follows：1. experiment equipment is integrated, when using, without the assembling of overspending time；
It is easy to class demonstration；2. the experiment equipment can not only study small vehicle speed and pulling force, dolly quality, the relation of frictional force, and
And can probe into whether the contact area (wheel quantum count) of dolly and rubbing surface impacts to the motion state of dolly；3. use
Light electric switch determines the time that dolly moves a segment distance, and certainty of measurement is high.
Brief description of the drawings
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the structural representation of embodiment one；
Fig. 2 is dolly polycrystalline substance schematic diagram when sliding block lifts middle wheel shaft；
Fig. 3 is dolly polycrystalline substance schematic diagram when sliding block does not lift middle wheel shaft；
Fig. 4 is slide block structure schematic diagram.
In figure：1 dolly, 2 bases, 3 line slideways, 4 front aprons, 5 backboards, 6 smooth electric switches, 7 buffer springs, 8 pulleys, 9
Draught line, 10 balancing weights, 11 wire casings, 12 geometrical clamps, 13 counterweights bucket, 14 wheel shafts, 15 pull bars, 16 sliding blocks, 17 stopper slots, 18 is small
Car bottom plate, 19 rollers, 20 counterweight bars, 21 stage clips, 22 collars, 23 elongated holes.
Specific embodiment
For a better understanding of the present invention, specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 1 to Fig. 4 shows the first implementation method of the invention, as shown in figure 1, a kind of for studying moving of car rule
The tester of rule, including dolly 1, base 2, also including the 800mm dismountable long that is fixed on base 2 by geometrical clamp 12
Line slideway 3, the front apron 4 for being respectively arranged on line slideway two ends, backboard 5 and be arranged at intervals in the middle part of line slideway two
The individual light electric switch 6 that can be moved axially along line slideway both sides.Geometrical clamp 12 is rectilinear clamp.Dolly is set on line slideway 3
1, front apron 4 fixes two symmetrical buffer springs 7 towards the side of dolly, its side fixed block 8 for deviating from dolly,
The front end of dolly 1 is provided with draught line 9, and when moving of car, draught line 9 and line slideway diameter parallel simultaneously overlap pulley 8 towards vertical
Lower section extends, its end fixed counterweight bucket 13, installs counterweight additional to change dolly pulling force in counterweight bucket.Counterweight bucket 13 is built-in with it
The counterweight for entering pulls moving of car collectively as guiding piece, and the counterbalance mass span loaded in it is 10g~50g, and weight
The quality of code bucket is almost ignored.Front apron 4 is provided with wire casing 11, and the draught line 9 is vacantly overlapped in cunning through wire casing 11
On wheel 8.Dolly top is provided with the counterweight bar 20 for fixed weight block 10, and a diameter of 4.5mm of counterweight bar 20 is, it is necessary to increase dolly
During counterweight, will be enclosed within counterweight bar 20 as the tool hole counterweight of balancing weight 10, balancing weight quality span is 0g~100g.It is small
Underbody portion is provided with three pairs of rollers 19 being connected with wheel shaft 14 by bearing altogether, and as shown in Figure 2 and Figure 3, the two ends of wheel shaft 14 have card
Card has the C-shaped collar 22 being adapted therewith in groove, draw-in groove, and elongated hole 23 is provided with correspondence collar position on cart base plate；Wheel
Stage clip 21 that is that axle top is provided with two vertical forces and being abutted with wheel shaft, adjusting means located at the top of cart base plate 18, including
Pull bar 15 and the sliding block 16 for being fixed on pull bar end.Sliding block 16 is arranged between dolly latter two wheel shaft, the upper table of sliding block 16
Face is provided with a stopper slot 17 matched with wheel shaft 14, when sliding block 16 is stuck between wheel shaft and cart base plate 18, by wheel shaft
14 lift, then trolley idler wheels are hanging；When sliding block 16 is extracted out, the roller 19 of dolly contacts to earth, in the insertion elongated hole 23 of collar 22.As schemed
Shown in 4, the section of sliding block 16 in approximate L-shaped shape, it not only has a horizontal component of base plate, also with raising up
Vertical portion, is arranged between two wheel shafts, need not also detach dolly without departing from dolly, so that test carriage is more whole
Body, integration, save excessive assembling parts process.The head of sliding block 16 has the gradient, is wedge-shaped design, is easy under wheel shaft
Inserted in the gap in portion.When sliding block 16 is stuck between wheel shaft and cart base plate 18, dolly lifts the wheel shaft in the middle of dolly, and
In the insertion stopper slot 17 of wheel shaft 14, its position is relatively fixed, it is ensured that the stability of trolley travelling.When sliding block 16 is extracted out, wheel shaft
14 move down under the pressure effect of stage clip, and the roller 19 of dolly contacts to earth.In experimentation, can select to advance or extract out cunning
Block, 4 or 6 are become by the roller that dolly contacts to earth, it is possible thereby to change experiment condition, are probed into suffered by dolly wheel and dolly
The relation of frictional force.Scale patch is provided with base vertically, light electric switch can be pasted along scale and moved.
When using, fix base 2 and line slideway 3, and by two light electric switches 6 along the scale patch on base determine away from
Enable that dolly passes through under it from simultaneously adjustment position.Load counterweight in counterweight bucket 13.Dolly is pulled to backboard 5
Loosed one's grip behind position, dolly is moved in the presence of pulling force, and according to this by two light electric switches, light electric switch gathered data and by calculating
Machine was calculated by the time, then can draw the average speed of moving of car.In process of the test, condition can be changed, selected different
Line slideway 3, different balancing weights 10, different pulling force, different dolly wheel quantity probe into moving of car rule.Hereinafter test
Data employ plastic-spraying face line slideway (shiny surface) and are drawn with cotton flannel surface line slideway (rubbing surface).
Following four form (1~table of table 4) is the experimental data that the characteristics of motion is demonstrated using the dolly：
Table 1
Table 2
Table 3
Table 4
Such as above-mentioned 4 experimental result forms, as can be seen from Table 1：In the case of other conditions identical, dolly counterweight is got over
Greatly, its movement velocity is slower.As can be seen from Table 2：In the case of other conditions identical, rubbing surface is more coarse, moving of car
Speed is slower.As can be seen from Table 3：In the case of other conditions identical, the wheel quantum count of moving of car speed and dolly, i.e.,
Dolly is unrelated with the contact area size of line slideway.As can be seen from Table 4：In the case of other conditions identical, dolly institute
Bigger by pulling force, moving of car speed is faster.
In addition to the implementation, the present invention can also have other embodiment.All use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (8)
1. a kind of tester for studying moving of car rule, including dolly（1）, base（2）, it is characterised in that：Also include
It is fixed on base（2）On dismountable line slideway（3）, be respectively arranged on the front apron at line slideway two ends（4）, backboard
（5）And it is arranged at intervals at two light electric switches that can be moved axially along line slideway both sides in the middle part of line slideway（6）, it is described straight
Line guide rail（3）Upper setting dolly（1）, the front apron（4）Bolster, its side for deviating from dolly are fixed towards the side of dolly
Fixed block（8）, the dolly front end is provided with draught line（9）, when moving of car, the draught line（9）With line slideway axle
Line is parallel and overlaps pulley（8）Extend towards vertical lower section, its end fixed traction block, the dolly top is provided with matches somebody with somebody for spacing
Pouring weight（10）Stopping means, its bottom is provided with the adjusting means for adjusting number of rollers.
2. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The dolly
Bottom is provided with some to by bearing and wheel shaft（14）The roller of connection（19）, wheel shaft（14）Two ends have draw-in groove, the draw-in groove
Interior card has the collar being adapted therewith（22）, elongated hole is provided with correspondence collar position on the cart base plate（23）；The wheel shaft
Stage clip that is that top is provided with vertical force and being abutted with wheel shaft（21）, the adjusting means is located at cart base plate（18）Top, bag
Include pull bar（15）With the sliding block for being fixed on pull bar end（16）, the sliding block（16）Upper surface is provided with and wheel shaft（14）Phase
The stopper slot matched somebody with somebody（17）, work as sliding block（16）It is stuck in wheel shaft and cart base plate（18）Between when, wheel shaft（14）Embedded stopper slot（17）
It is interior, work as sliding block（16）During extraction, the roller of dolly（19）Contact to earth, the collar（22）Embedded elongated hole（23）It is interior.
3. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：Balancing weight matter
Amount span is 0g ~ 100g, and guiding piece quality span is 10g ~ 50g.
4. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The front
Plate is provided with wire casing（11）, the draught line（9）Through wire casing（11）It is overlapped in pulley（8）On.
5. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The base
On be provided with vertically scale patch.
6. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The straight line
Guide rail passes through geometrical clamp（12）It is fixed on base.
7. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The photoelectricity
Door（6）It is anchored on base by fastener.
8. a kind of tester for studying moving of car rule according to claim 1, it is characterised in that：The buffering
Part is buffer spring（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621240810.5U CN206293058U (en) | 2016-11-18 | 2016-11-18 | A kind of tester for studying moving of car rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621240810.5U CN206293058U (en) | 2016-11-18 | 2016-11-18 | A kind of tester for studying moving of car rule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206293058U true CN206293058U (en) | 2017-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621240810.5U Active CN206293058U (en) | 2016-11-18 | 2016-11-18 | A kind of tester for studying moving of car rule |
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| Country | Link |
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| CN (1) | CN206293058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409075A (en) * | 2016-11-18 | 2017-02-15 | 江苏苏威尔科技有限公司 | Experiment device used for studying movement law of trolley |
-
2016
- 2016-11-18 CN CN201621240810.5U patent/CN206293058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409075A (en) * | 2016-11-18 | 2017-02-15 | 江苏苏威尔科技有限公司 | Experiment device used for studying movement law of trolley |
| CN106409075B (en) * | 2016-11-18 | 2020-08-21 | 江苏苏威尔科技有限公司 | Experimental apparatus for researching motion law of trolley |
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