CN211669875U - Mechanical design teaching presentation device - Google Patents
Mechanical design teaching presentation device Download PDFInfo
- Publication number
- CN211669875U CN211669875U CN202020617088.2U CN202020617088U CN211669875U CN 211669875 U CN211669875 U CN 211669875U CN 202020617088 U CN202020617088 U CN 202020617088U CN 211669875 U CN211669875 U CN 211669875U
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- China
- Prior art keywords
- eccentric wheel
- guide rail
- sliding block
- back plate
- hinged
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- Expired - Fee Related
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Abstract
The utility model discloses a mechanical design teaching presentation device, include: the L-shaped mounting plate comprises a bottom plate and a back plate vertically arranged on the bottom plate, a rotatable eccentric wheel is arranged on the back plate, a connecting rod is hinged to the eccentric wheel, a first sliding block is hinged to the tail end of the connecting rod, a first guide rail is arranged on one side of the eccentric wheel, the first sliding block can slide on the first guide rail, and a pin shaft is arranged between the eccentric wheel and the connecting rod; a second guide rail is arranged on the upper side of the eccentric wheel, a second sliding block is matched on the second guide rail, the second sliding block is hinged with a driven rod, and the bottom end of the driven rod is in contact with the eccentric wheel; the back plate is provided with a threaded hole, and the threaded hole is matched with a screw rod used for fixing the eccentric wheel. The utility model discloses can demonstrate slider-crank mechanism or cam mechanism motion respectively, in addition, can keep crank link mechanism to a certain motion state, be favorable to demonstrating and operating.
Description
Technical Field
The utility model relates to a teaching equipment technical field, concretely relates to mechanical design teaching presentation device.
Background
The mechanical industry is the traditional industry in China, a large number of mechanical specialties are developed in various colleges and universities and technical schools all over the country at present, and the mechanical basic course is an important component in the course learning of the mechanical specialties. The main teaching content refers to transmission of power and motion by means of mechanical transmission, and teachers often use mechanical mechanism teaching aids to conduct practical demonstration in order to enable students to know characteristics, working principles and structures of common mechanical transmission mechanisms more intuitively in the teaching process.
Teaching presentation device among the prior art, each kind of motion just needs a model to demonstrate, simultaneously, in crank slide mechanism, need fix the crank and make crank link mechanism fix a certain motion state, is unfavorable for the demonstration, operates inconveniently.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a mechanical design teaching presentation device is provided, is favorable to demonstration and operation.
The utility model provides a technical scheme that technical problem adopted as follows:
a mechanical design teaching presentation device, comprising:
the L-shaped mounting plate comprises a bottom plate and a back plate vertically arranged on the bottom plate, a rotatable eccentric wheel is arranged on the back plate, a connecting rod is hinged to the eccentric wheel, a first sliding block is hinged to the tail end of the connecting rod, a first guide rail is arranged on one side of the eccentric wheel, the first sliding block can slide on the first guide rail, and a pin shaft is arranged between the eccentric wheel and the connecting rod;
a second guide rail is arranged on the upper side of the eccentric wheel, a second sliding block is matched on the second guide rail, the second sliding block is hinged with a driven rod, and the bottom end of the driven rod is in contact with the eccentric wheel;
the back plate is provided with a threaded hole, and the threaded hole is matched with a screw rod used for fixing the eccentric wheel.
Preferably, a first support frame for mounting the first guide rail is arranged on the bottom plate, and a second support frame for mounting the second guide rail is arranged on the back plate.
Preferably, a rotating shaft for supporting the eccentric wheel to rotate is arranged on the back plate, a bearing is sleeved on the rotating shaft, and the bearing is fixedly arranged on the eccentric wheel.
Preferably, the end of the screw is provided with a rubber pad.
Compared with the prior art, the utility model provides a mechanical design teaching presentation device has following beneficial effect:
thereby drive connecting rod or driven lever through the pulling eccentric wheel, can demonstrate slider-crank mechanism or cam mechanism motion respectively, in addition, owing to set up the screw rod that is used for fixed eccentric wheel, just so can fix a position with the eccentric wheel, that is to say can keep the crank link mechanism to a certain motion state, can avoid the teacher to need to cover with this motion state of both hands fixing, be favorable to the demonstration, convenient operation simultaneously.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a front view of the preferred embodiment of the mechanical design teaching demonstration device of the present invention.
Fig. 2 is a left side view of the preferred embodiment of the mechanical design teaching demonstration device of the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The embodiment of the utility model provides a mechanical design teaching presentation device, as shown in fig. 1 and fig. 2, it includes: the L-shaped mounting plate 100 comprises a bottom plate 101 and a back plate 102 vertically arranged on the bottom plate 101, a rotatable eccentric wheel 200 is arranged on the back plate 102, a connecting rod 300 is hinged on the eccentric wheel 200, a first sliding block 400 is hinged at the tail end of the connecting rod 300, a first guide rail 500 is arranged on one side of the eccentric wheel 200, and the first sliding block 400 can slide on the first guide rail 500; a second guide rail 600 is arranged on the upper side of the eccentric wheel 200, a second sliding block 700 is adapted on the second guide rail 600, the second sliding block 700 is hinged with a driven rod 800, and the bottom end of the driven rod 800 is in contact with the eccentric wheel 200; the back plate 102 is provided with a threaded hole (not shown) adapted to a screw 900 for fixing the eccentric wheel 200, and a pin 301 is disposed between the eccentric wheel 200 and the connecting rod 300.
This mechanical design teaching presentation device can demonstrate slider-crank mechanism and cam mechanism, through pulling eccentric wheel 200 to drive connecting rod 300 or follower link 800 demonstrate slider-crank mechanism or cam mechanism motion respectively. In addition, due to the fact that the screw 900 used for fixing the eccentric wheel 200 is arranged, the eccentric wheel 200 can be fixed at one position, namely the crank-link mechanism can be kept in a certain motion state, the situation that teachers need to fix the motion state with two hands to cover the motion state can be avoided, demonstration is facilitated, and meanwhile operation is convenient.
In this embodiment, the outer end surface of the first slider 400 is flush with the uppermost surface of the first guide rail 500 in order to facilitate the rotation of the link 300, and the outer end surface of the second slider 700 is flush with the uppermost surface of the second guide rail 600 in order to facilitate the rotation of the follower lever 800.
In specific implementation, the bottom plate 101 is provided with a first support 501 for mounting the first guide rail 500, and the back plate 102 is provided with a second support 601 for mounting the second guide rail 600.
In specific implementation, the back plate 102 is provided with a rotating shaft 201 for supporting the eccentric wheel 200 to rotate, and the rotating shaft 201 is sleeved with a bearing (not shown in the figure) fixedly arranged on the eccentric wheel 200.
In specific implementation, a rubber pad is arranged at the end of the screw 900. The rubber pad can be used for effectively increasing the friction force.
To sum up, the utility model discloses a mechanical design teaching presentation device, include: the L-shaped mounting plate comprises a bottom plate and a back plate vertically arranged on the bottom plate, a rotatable eccentric wheel is arranged on the back plate, a connecting rod is hinged to the eccentric wheel, a first sliding block is hinged to the tail end of the connecting rod, a first guide rail is arranged on one side of the eccentric wheel, the first sliding block can slide on the first guide rail, and a pin shaft is arranged between the eccentric wheel and the connecting rod; a second guide rail is arranged on the upper side of the eccentric wheel, a second sliding block is matched on the second guide rail, the second sliding block is hinged with a driven rod, and the bottom end of the driven rod is in contact with the eccentric wheel; the back plate is provided with a threaded hole, the threaded hole is matched with a screw rod used for fixing the eccentric wheel, so that the motion of the slider-crank mechanism or the cam mechanism can be demonstrated respectively, and in addition, the crank connecting rod mechanism can be kept in a certain motion state, thereby being beneficial to demonstration and operation.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (4)
1. A mechanical design teaching presentation device, its characterized in that includes:
the L-shaped mounting plate comprises a bottom plate and a back plate vertically arranged on the bottom plate, a rotatable eccentric wheel is arranged on the back plate, a connecting rod is hinged to the eccentric wheel, a first sliding block is hinged to the tail end of the connecting rod, a first guide rail is arranged on one side of the eccentric wheel, the first sliding block can slide on the first guide rail, and a pin shaft is arranged between the eccentric wheel and the connecting rod;
a second guide rail is arranged on the upper side of the eccentric wheel, a second sliding block is matched on the second guide rail, the second sliding block is hinged with a driven rod, and the bottom end of the driven rod is in contact with the eccentric wheel;
the back plate is provided with a threaded hole, and the threaded hole is matched with a screw rod used for fixing the eccentric wheel.
2. The mechanical design teaching demonstration device of claim 1 wherein a first support bracket is provided on the base plate for mounting a first rail and a second support bracket is provided on the back plate for mounting a second rail.
3. The mechanical design teaching demonstration device according to claim 1, wherein a rotating shaft for supporting the eccentric wheel to rotate is arranged on the back plate, a bearing is sleeved on the rotating shaft, and the bearing is fixedly arranged on the eccentric wheel.
4. The mechanical design teaching demonstration device of claim 1 wherein the end of the screw is provided with a rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020617088.2U CN211669875U (en) | 2020-04-22 | 2020-04-22 | Mechanical design teaching presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020617088.2U CN211669875U (en) | 2020-04-22 | 2020-04-22 | Mechanical design teaching presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211669875U true CN211669875U (en) | 2020-10-13 |
Family
ID=72743453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020617088.2U Expired - Fee Related CN211669875U (en) | 2020-04-22 | 2020-04-22 | Mechanical design teaching presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211669875U (en) |
-
2020
- 2020-04-22 CN CN202020617088.2U patent/CN211669875U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201013 |