CN204632194U - Catapult type mechanics small rail car - Google Patents
Catapult type mechanics small rail car Download PDFInfo
- Publication number
- CN204632194U CN204632194U CN201520329340.9U CN201520329340U CN204632194U CN 204632194 U CN204632194 U CN 204632194U CN 201520329340 U CN201520329340 U CN 201520329340U CN 204632194 U CN204632194 U CN 204632194U
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- China
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- dolly
- hook
- bungee
- fixed
- rail car
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Abstract
Catapult type mechanics small rail car, belong to teaching tool for physical experiments, comprise track, dolly, the roller devices of dolly bottom and Orbit Matching, it is characterized in that, track one end is fixed with ejector member, and ejector member comprises base cross members and is fixed on the montant at base cross members two ends, is provided with hook outside montant, the hook of two montants is positioned at same position on montant, and being in same level, hook is provided with bungee, and the confession that bungee activity is hung on dolly one end is hung on parts; The beneficial effects of the utility model are: 1) by the connected mode catching on bungee for extension parts of dolly one end, dolly can be made to arrive ejector member place can depart from bungee fast free; 2) hook is threaded with fixed orifice, and fixed orifice can make the high and low position quick adjustment of hook, and any part avoiding dolly can tangle the situation appearance of bungee; 3) circular cavity mass fixation on dolly, the situation avoiding dolly jumping occurs.
Description
Technical field
The utility model is that one belongs to physics experiments of high school teaching aid, is specifically related to a kind of catapult type mechanics small rail car.
Background technology
Mechanics small rail car is the teaching aid being mainly used in measuring Newton second law and related experiment, and existing mechanics small rail car Problems existing when being used in the scene of Experimental Research merit and velocity variations is:
1. the inadequate science of the connected mode of bungee and dolly, bungee can not depart from dolly in time after recovery natural length, still can affect the motion that even can hinder dolly.
2. oversize " fish " and " bear's paw " of causing of bungee can not get both---and oversize, bungee more easily rolls bungee after replying natural length; Reduce the length of bungee, then can not make full use of track and paper tape length, for accurately determining that the speed that dolly moves with uniform velocity adds difficulty.
3. dolly deadweight very light (plastic material) and bearing capacity is not enough, cause when many bungees hung by dolly because deadweight problem still exists the situation of advancing of jumping, moreover speed also can be caused excessive thus counting on paper tape very little, may add the difficulty determining at the uniform velocity hourly velocity.
Summary of the invention
The purpose of this utility model is to provide a kind of bungee and does not hinder dolly, and trolley travelling is steady, tests catapult type mechanics small rail car accurately.
The utility model is by the following technical solutions:
Catapult type mechanics small rail car, comprises track, dolly, the roller devices of dolly bottom and Orbit Matching
,it is characterized in that, track one end is fixed with ejector member, ejector member comprises base cross members and is fixed on the montant at base cross members two ends, hook is provided with outside montant, the hook of two montants is positioned at same position on montant, and being in same level, hook is provided with bungee, and bungee activity is hung on supplying on extension parts of dolly one end.
Bungee on ejector member is slightly tightened and is hung on dolly for hanging on parts, freely hightails, prevent bungee on the impact of dolly when dolly can be made to arrive ejector member;
Base cross members and the montant being fixed on base cross members two ends, can be fixed by screw or other removablies.
Wherein, be shaft-like for extension parts, length is 1-3cm, is threaded with dolly for extension parts, can adopt wooden, plastics, metal little rod for easy to make for hanging parts.
Wherein, there is multiple circular cavity in dolly, in circular cavity, be movably equipped with weights; The diameter of multiple circular cavity can be different, in order to adapt to the needs of Different Weight counterweight.
Wherein, be provided with multiple fixed orifice outside montant, the centre distance of two fixed orifices is 0.5-1cm, and the hook fixed orifice that to be threaded with fixed orifice can make the high and low position quick adjustment of hook.
Wherein, track two ends are provided with height adjusting blocks, and height adjusting blocks is threaded with rail base; Height adjusting blocks can the height at adjustable track two ends.
Wherein, roller devices bottom dolly is two, is symmetricly set on the two ends bottom dolly respectively, and roller devices comprises the connecting rod of two wheels and a connection wheel, connecting rod is fixed with two damping springs, damping spring top is fixed on the support bar bottom dolly.
The beneficial effects of the utility model are: 1) by the connected mode catching on bungee for extension parts of dolly one end, dolly can be made to arrive ejector member place can depart from bungee fast free; 2) hook is threaded with fixed orifice, and fixed orifice can make the high and low position quick adjustment of hook, makes the height of its highly a little higher than dolly entirety, and any part avoiding dolly can tangle the situation appearance of bungee; 3) on dolly, circular cavity ensure that the firmness of mass on car, and dolly is moved ahead stably, and the situation avoiding jumping occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right TV structure schematic diagram of the utility model;
Fig. 3 is the plan structure schematic diagram of the utility model dolly;
In figure: 1, track, 2, dolly, 3, base cross members, 4, montant, 5, hook, 6, bungee, 7, for hanging parts, 8, fixed orifice, 9, height adjusting blocks, 10, wheel, 11, connecting rod, 12, damping spring, 13, support bar, 14, circular cavity.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, 2, catapult type mechanics small rail car, comprises track 1, dolly 2, and the roller devices of dolly 2 bottom mates with track 1
,track 1 one end is fixed with ejector member, ejector member comprises base cross members 3 and is fixed on the montant 4 at base cross members 3 two ends, hook 5 is provided with outside montant 4, the hook 5 of two montants 4 is positioned at the same position of montant 4, and be in same level, hook 5 is provided with bungee 6, and the confession that bungee 6 activity is hung on dolly 2 one end is hung on parts 7; It is shaft-like for supplying to hang parts 7, and length is 1 ~ 3cm, is threaded with dolly 2 for extension parts 7; The centre distance being provided with multiple fixed orifices 8, two fixed orifices 8 outside montant 4 is 0.5-1cm, and hook 5 is threaded with fixed orifice 8; Bottom track 1, two ends are provided with height adjusting blocks 9, and height adjusting blocks 9 is connected with track 1 bottom thread; Roller devices bottom dolly 2 is two, be symmetricly set on the two ends bottom dolly 2 respectively, roller devices comprises the connecting rod 11 of two wheels 10 and a connection wheel 10, connecting rod 11 is fixed with two damping springs 12, and damping spring 12 top is fixed on the support bar 13 bottom dolly 2.
As shown in Figure 3, there is multiple circular cavity 14 in dolly 2, in circular cavity 14, be movably equipped with weights.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. catapult type mechanics small rail car, comprises track, dolly, the roller devices of dolly bottom and Orbit Matching
,it is characterized in that, track one end is fixed with ejector member, ejector member comprises base cross members and is fixed on the montant at base cross members two ends, hook is provided with outside montant, the hook of two montants is positioned at same position on montant, and being in same level, hook is provided with bungee, and bungee activity is hung on supplying on extension parts of dolly one end.
2. catapult type mechanics small rail car according to claim 1, is characterized in that: it is shaft-like for supplying to hang parts, and length is 1-3cm, is threaded with dolly for extension parts.
3. catapult type mechanics small rail car according to claim 1 and 2, is characterized in that: have multiple circular cavity in dolly, be movably equipped with weights in circular cavity.
4. catapult type mechanics small rail car according to claim 3, is characterized in that: be provided with multiple fixed orifice outside montant, and the centre distance of two fixed orifices is 0.5-1cm, and hook is threaded with fixed orifice.
5. catapult type mechanics small rail car according to claim 4, is characterized in that: track two ends are provided with height adjusting blocks, and height adjusting blocks is threaded with rail base.
6. catapult type mechanics small rail car according to claim 1 and 2, it is characterized in that: the roller devices bottom dolly is two, be symmetricly set on the two ends bottom dolly respectively, roller devices comprises the connecting rod of two wheels and a connection wheel, connecting rod is fixed with two damping springs, damping spring top is fixed on the support bar bottom dolly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329340.9U CN204632194U (en) | 2015-05-21 | 2015-05-21 | Catapult type mechanics small rail car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329340.9U CN204632194U (en) | 2015-05-21 | 2015-05-21 | Catapult type mechanics small rail car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204632194U true CN204632194U (en) | 2015-09-09 |
Family
ID=54051196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520329340.9U Expired - Fee Related CN204632194U (en) | 2015-05-21 | 2015-05-21 | Catapult type mechanics small rail car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204632194U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN106781902A (en) * | 2017-01-11 | 2017-05-31 | 兰州大学 | A kind of experimental provision for studying air drag |
-
2015
- 2015-05-21 CN CN201520329340.9U patent/CN204632194U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370200A (en) * | 2016-10-11 | 2017-02-01 | 张远程 | Motion parameter measurement device of car |
| CN106370200B (en) * | 2016-10-11 | 2023-08-15 | 南京南华航空产业有限公司 | Motion parameter measuring device of vehicle |
| CN106781902A (en) * | 2017-01-11 | 2017-05-31 | 兰州大学 | A kind of experimental provision for studying air drag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |