CN204516253U - A kind of Chain conveyer polygon effect teaching appliance - Google Patents
A kind of Chain conveyer polygon effect teaching appliance Download PDFInfo
- Publication number
- CN204516253U CN204516253U CN201520222769.8U CN201520222769U CN204516253U CN 204516253 U CN204516253 U CN 204516253U CN 201520222769 U CN201520222769 U CN 201520222769U CN 204516253 U CN204516253 U CN 204516253U
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- CN
- China
- Prior art keywords
- pointer
- chain
- polygon effect
- plectrum
- needle
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Abstract
The utility model aims to provide a kind of Chain conveyer polygon effect teaching appliance, comprises base, motor, chain-drive mechanism and rotation speed change proving installation; Described motor is installed on base, and described chain-drive mechanism comprises main drive shaft, drive sprocket, driven sprocket, driven shaft, chain; Described rotation speed change proving installation comprises needle dial, needle pivot A, pointer A, described needle dial, bottom is provided with needle pivot A, described needle pivot A installs pointer A, the axial direction of needle pivot A is provided with plectrum, described plectrum contacts with the gear teeth of percussion gear, in percussion pinion rotation process, plectrum receives and impacts and bounce-back rotation; Be provided with scale above described needle dial, the upper end of described pointer A is corresponding with scale.The Chain conveyer polygon effect teaching appliance that the utility model provides, structure is simple, easy and simple to handle, can the chaindriven polygon effect of ocular demonstration.
Description
Technical field
The utility model relates to mechanical principle teaching clothing arts, is specifically related to a kind of Chain conveyer polygon effect teaching appliance.
Background technology
When the drive sprocket in chain drive system rotates with constant speed, the speed of the rotating speed of driven sprocket and chain itself is all inconstant, but in periodically variable, and this does not overlap and cause due to pitch circle and nodel line polygon.Specifically, sprocket wheel often turns over a tooth, chain speed just from big to small, change from small to large once again, simultaneous chain is up and down tremble and due to contact portion be polygonal part, the chaindriven motion unevenness caused due to polygonal existence is called chaindriven polygon effect.
In field research, allow student can perceive polygon effect intuitively, the understanding of lifting student to this effect is very helpful.The equipment of current detection polygon effect mostly is accurate and complicated instrument detection light pulse signal and detects, and cost is high, difficult in maintenance, is unfavorable for popularizing in teaching.
Summary of the invention
The utility model aims to provide a kind of Chain conveyer polygon effect teaching appliance, and this teaching appliance structure is simple, easy and simple to handle, can the chaindriven polygon effect of ocular demonstration.
The technical solution of the utility model is as follows: a kind of Chain conveyer polygon effect teaching appliance, comprises base, motor, chain-drive mechanism and rotation speed change proving installation; Described motor is installed on base, and described chain-drive mechanism comprises main drive shaft, drive sprocket, driven sprocket, driven shaft, chain; Described main drive shaft one end is fixedly connected with motor rotation axis, and the other end is fixedly connected with drive sprocket, and described drive sprocket is connected by chain with driven sprocket; Described driven sprocket is fixedly connected with driven shaft;
Described driven shaft is fixed with percussion gear;
Described rotation speed change proving installation comprises needle dial, needle pivot A, pointer A, described needle dial, bottom is provided with needle pivot A, described needle pivot A installs pointer A, the axial direction of needle pivot A is provided with plectrum, described plectrum contacts with the gear teeth of percussion gear, in percussion pinion rotation process, plectrum receives and impacts and bounce-back rotation; Be provided with scale above described needle dial, the upper end of described pointer A is corresponding with scale.
Preferably, the gap that described plectrum tilts between the corresponding gear teeth is arranged.
Preferably, also comprise guide rail, pointer B, above described needle dial, scale have guide rail, described slide on rails installs pointer B, and the upper end of pointer B is corresponding with scale, and pointer B can under the impact of pointer A, at slide on rails.
Preferably, pointer A is divided into epimere and hypomere two sections by described needle pivot A, and wherein hypomere is shorter, and epimere is longer.
Preferably, epimere and the length of hypomere are than being 50-60:1.
The course of work of the present utility model is as follows: lift the plectrum on pointer A, makes it depart from the range of movement of percussion gear tooth, pointer B is pressed close to pointer A; Starter motor, main drive shaft, drive sprocket is driven to rotate, and rotated by chain-driving driven sprocket, driven shaft and runner, after slow-roll stabilization, slowly put down plectrum, make it collide with the percussion gear tooth in motion, and then plectrum drives pointer A to rotate, until pointer A turns to backswing after maximum angle, complete and once test; In preferred version, be also provided with pointer B, the end of pointer A drives pointer B at slide on rails in rotation, and pointer B stops, and completes and once tests; Replace with and the pitch of drive sprocket, driven sprocket first, two sprocket wheels that the number of teeth is different, chain is installed, repeats above-mentioned experimentation; After twice experiment, show the impact of the difference of pitch of chain wheel, the number of teeth on Chain conveyer polygon effect by the deflection situation of observing contrast twice pointer A or B.
The utility model shows polygon effect by simple chain drive structure, by the collision of the gear teeth on percussion gear and plectrum, and then pass through the length of pointer A, the deflection of collision rift is amplified by short two parts, the scale on needle dial is coordinated to show the deflection situation of pointer A finally by pointer B, because the degree of deflection of pointer A is directly proportional to the rotating speed of percussion gear, therefore, the deflection situation of pointer A reflects the velocity of rotation of percussion gear and driven sprocket indirectly, pass through many experiments, different pitch can be represented, the number of teeth, the sprocket wheel of rotating speed is on the impact of the rotating speed of driven sprocket, Chain conveyer polygon effect is presented, realize the object of demonstration Chain conveyer polygon effect, be applicable to very much being applied to teaching and experiment instrument.
Accompanying drawing explanation
Fig. 1 is the structural representation one of the utility model Chain conveyer polygon effect teaching appliance
Fig. 2 is the structural representation two of the utility model Chain conveyer polygon effect teaching appliance
Fig. 3 is the utility model Chain conveyer polygon effect teaching appliance percussion gear and plectrum schematic enlarged-scale view
Fig. 4 is the utility model Chain conveyer polygon effect teaching appliance needle dial and pointer B schematic enlarged-scale view
In figure each several part title and sequence number as follows:
1 is base, and 2 is motor, and 31 is main drive shaft, and 32 is drive sprocket, and 33 is driven sprocket, and 34 is driven shaft, 35 is chain, and 4 is percussion gear, and 51 is needle dial, and 52 is needle pivot A, and 53 is pointer A, and 531 is epimere, 532 is hypomere, and 54 is plectrum, and 55 is scale, and 56 is guide rail, and 57 is pointer B.
Embodiment
The utility model is illustrated below in conjunction with drawings and Examples.
Embodiment 1
As Figure 1-4, the Chain conveyer polygon effect teaching appliance that the present embodiment provides, comprises base 1, motor 2, chain-drive mechanism and rotation speed change proving installation; Described motor 2 is installed on base 1, and described chain-drive mechanism comprises main drive shaft 31, drive sprocket 32, driven sprocket 33, driven shaft 34, chain 35; Described main drive shaft 31 one end is fixedly connected with motor 2 rotation axis, and the other end is fixedly connected with drive sprocket 32, and described drive sprocket 32 is connected by chain 34 with driven sprocket 33; Described driven sprocket 33 is fixedly connected with driven shaft 34;
Described driven shaft 34 is fixed with percussion gear 4;
Described rotation speed change proving installation comprises needle dial 51, needle pivot A52, pointer A53, described needle dial 51, bottom is provided with needle pivot A52, described needle pivot A52 installs pointer A53, the axial direction of needle pivot A52 is provided with plectrum 54, described plectrum 54 contacts with the gear teeth of percussion gear 4, in percussion gear 4 rotation process, plectrum 54 receives and impacts and bounce-back rotation; Be provided with scale 55 above described needle dial 51, the upper end of described pointer A53 is corresponding with scale 55;
The gap that described plectrum 54 tilts between the corresponding gear teeth is arranged;
Also comprise guide rail 56, pointer B57, above described needle dial 51, scale 55 have guide rail 56, described guide rail 56 is slidably installed pointer B57, the upper end of pointer B57 is corresponding with scale 55, and pointer B57 under the impact of pointer A53, guide rail 56 can slide;
Pointer A53 is divided into epimere 531 and hypomere 532 two sections by described needle pivot A52, and wherein epimere 531 and the length of hypomere 532 are than being 50:1.
Claims (5)
1. a Chain conveyer polygon effect teaching appliance, comprises base (1), motor (2), chain-drive mechanism and rotation speed change proving installation; Described motor (2) is installed on base (1), and described chain-drive mechanism comprises main drive shaft (31), drive sprocket (32), driven sprocket (33), driven shaft (34), chain (35); Described main drive shaft (31) one end is fixedly connected with motor (2) rotation axis, and the other end is fixedly connected with drive sprocket (32), and described drive sprocket (32) is connected by chain (35) with driven sprocket (33); Described driven sprocket (33) is fixedly connected with driven shaft (34); It is characterized in that:
Described driven shaft (34) is fixed with percussion gear (4);
Described rotation speed change proving installation comprises needle dial (51), needle pivot A(52), pointer A(53), described needle dial (51), bottom is provided with needle pivot A(52), described needle pivot A(52) upper installation pointer A(53), needle pivot A(52) axial direction be provided with plectrum (54), described plectrum (54) contacts with the gear teeth of percussion gear (4), in percussion gear (4) rotation process, plectrum (54) receives and impacts and bounce-back rotation; Described needle dial (51) top is provided with scale (55), described pointer A(53) upper end corresponding with scale (55).
2. Chain conveyer polygon effect teaching appliance as claimed in claim 1, is characterized in that: the gap that described plectrum (54) tilts between the corresponding gear teeth is arranged.
3. Chain conveyer polygon effect teaching appliance as claimed in claim 1, it is characterized in that: also comprise guide rail (56), pointer B(57), described needle dial (51) top, scale (55) have guide rail (56), described guide rail (56) is slidably installed pointer B(57), pointer B(57) upper end corresponding with scale (55), pointer B(57) can at pointer A(53) impact under, slide guide rail (56) is upper.
4. Chain conveyer polygon effect teaching appliance as claimed in claim 1, is characterized in that: described needle pivot A(52) by pointer A(53) be divided into epimere (531) and hypomere (532) two sections, wherein hypomere (532) is shorter, and epimere (531) is longer.
5. Chain conveyer polygon effect teaching appliance as claimed in claim 4, is characterized in that: epimere (531) is 50-60:1 with the length ratio of hypomere (532).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520222769.8U CN204516253U (en) | 2015-04-14 | 2015-04-14 | A kind of Chain conveyer polygon effect teaching appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520222769.8U CN204516253U (en) | 2015-04-14 | 2015-04-14 | A kind of Chain conveyer polygon effect teaching appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516253U true CN204516253U (en) | 2015-07-29 |
Family
ID=53714202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520222769.8U Expired - Fee Related CN204516253U (en) | 2015-04-14 | 2015-04-14 | A kind of Chain conveyer polygon effect teaching appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794978A (en) * | 2015-04-14 | 2015-07-22 | 广西科技大学 | Chain-drive polygonal effect teaching instrument |
-
2015
- 2015-04-14 CN CN201520222769.8U patent/CN204516253U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794978A (en) * | 2015-04-14 | 2015-07-22 | 广西科技大学 | Chain-drive polygonal effect teaching instrument |
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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: 20150729 Termination date: 20180414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |