CN111102441A - Can prevent dust projecting apparatus for teaching - Google Patents
Can prevent dust projecting apparatus for teaching Download PDFInfo
- Publication number
- CN111102441A CN111102441A CN201811275110.3A CN201811275110A CN111102441A CN 111102441 A CN111102441 A CN 111102441A CN 201811275110 A CN201811275110 A CN 201811275110A CN 111102441 A CN111102441 A CN 111102441A
- Authority
- CN
- China
- Prior art keywords
- fixed
- seat
- projector
- threaded
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a dustproof projector for teaching, which comprises a projector body, a base and traveling wheels fixed at each corner of the bottom of the base, wherein a pillar is fixed at the bottom of the base, a protective shell with an opening at the top is fixed at the top of the pillar, and a cover body is arranged on the top of the protective shell in a covering manner; a vertical pushing and lifting device is fixed at the bottom of the protective shell, a steering joint is fixed at the top of the vertical pushing and lifting device, and the projector body is fixed on the steering joint. The beneficial effects are as follows: convenient to use, practicality are strong.
Description
Technical Field
The invention relates to a dustproof projector for teaching.
Background
The projecting apparatus uses more extensively in the teaching, but the projecting apparatus among the prior art is fixed indoor, removes inconveniently, piles up a lot of dust above the face moreover easily, and the practicality is poor.
Disclosure of Invention
The invention aims to provide a dustproof teaching projector which is convenient to use and high in practicability.
In order to solve the technical problems, the invention adopts the technical scheme that: a dustproof projector for teaching comprises a projector body, a base and a plurality of travelling wheels fixed at the bottom of the base, and is characterized in that a support is fixed at the bottom of the base, a protective shell with an opening at the top is fixed at the top of the support, and a cover body is arranged at the top of the protective shell in a covering mode; the bottom of the protective shell is fixed with a vertical pushing and lifting device, the vertical pushing and lifting device comprises a lower plate body fixed at the bottom of the protective shell, a vertical cylinder fixed at the top of the lower plate body, and a supporting arm with the bottom end extending into the inner cavity of the vertical cylinder, the top of the supporting arm is fixed with a steering joint, the projector body is fixed on the steering joint, the top of the lower plate body is provided with a stepping motor, the stepping motor is arranged in the inner cavity of the vertical cylinder, an output shaft of the stepping motor is fixed with a vertical threaded column, a movable seat is slidably arranged on the vertical threaded column in a threaded manner, the bottom end of the supporting arm is connected with the top of the movable seat, the top of the vertical cylinder is fixed with an upper plate body, a rotating shaft is rotatably arranged on the upper plate body, a vertical guide threaded rod is fixed at the bottom of the rotating shaft, and the vertical guide threaded rod passes through the movable seat and is in threaded connection with the, the outer wall of the pillar is fixed with a control box, a controller used for controlling the stepping motor is installed in the control box, a lifting button group is arranged on the outer wall of the control box, and the controller is electrically connected with the lifting button group and the stepping motor respectively.
Preferably, foretell can prevent dust for teaching projecting apparatus, wherein turn to the joint and include the screw thread horizontal pole, fix the board that holds up at support arm top, fix keep off the seat and keep off the seat after keeping off before holding up the board top, it is equipped with a revolving plate to press from both sides between seat and the back fender seat to keep off before, the screw thread horizontal pole passes in proper order keep off seat, revolving plate, back fender seat, the projecting apparatus body is installed the top of revolving plate.
Preferably, in the above projector for teaching purpose, two ends of the threaded cross bar are respectively connected with a limit nut through threads.
Preferably, in the above dustproof projector for teaching, an anti-shift sleeve is fixed to the outer wall of the rotating shaft above and below the upper plate.
The technical effects of the invention are mainly reflected in that: each corner at the bottom of the base is respectively provided with a walking wheel, so that the walking wheel is labor-saving and convenient to move; the user can control the stepping motor to rotate through the lifting button group, so that the vertical threaded column is driven to rotate, the movable seat slides on the vertical threaded column due to the fact that the vertical threaded column is in threaded connection with the movable seat, the support arm is driven to move up and down, and the projector body is driven to move up and down; the user can adjust the pitch angle of the projector body through the steering joint.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the projector body in fig. 1 moving out of the protective shell;
FIG. 3 is a schematic structural view of the vertical pushing and lifting device of FIG. 1;
FIG. 4 is a schematic view of the steering knuckle of FIG. 1;
FIG. 5 is a right side view of FIG. 4;
fig. 6 is a longitudinal sectional view of the control box of fig. 1.
Wherein, the part names corresponding to the reference numbers are: 100-anti-displacement sleeve, 11-projector body, 12-base, 13-traveling wheel, 14-support column, 15-protective shell, 16-cover body, 2-vertical pushing device, 21-lower plate body, 22-vertical cylinder, 23-supporting arm, 24-stepping motor, 25-vertical threaded column, 26-movable seat, 27-upper plate body, 28-rotating shaft, 29-vertical guide threaded rod, 4-steering joint, 41-threaded cross rod, 42-lifting plate, 43-front baffle seat, 44-rear baffle seat, 45-rotating plate, 46-limit nut, 5-control box, 51-controller and 52-lifting button group.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1 to 6, a dustproof projector for teaching comprises a projector body 11, a base 12 and road wheels 13 fixed at each corner of the bottom of the base 12 through screws.
A pillar 14 is fixed at the bottom of the base 12, a protective shell 15 with an open top is fixed at the top of the pillar 14, and the pillar 14 is connected with the base 12 and the protective shell 15 in a welding manner. The top of the protective shell 15 is covered with a cover 16.
A vertical pushing and lifting device 2 is fixed at the bottom of the protective shell 15, the vertical pushing and lifting device 2 comprises a lower plate body 21 fixed at the bottom of the protective shell 15 through a screw, a vertical cylinder 22 welded at the top of the lower plate body 21, and a supporting arm 23 with the bottom end extending into the inner cavity of the vertical cylinder 22, a steering joint 4 is fixed at the top of the supporting arm 23, the projector body 11 is fixed on the steering joint 4, a stepping motor 24 is installed at the top of the lower plate body 21 through a screw, the stepping motor 24 is arranged in the inner cavity of the vertical cylinder 22, a vertical threaded column 25 is fixed on the output shaft of the stepping motor 24, a movable seat 26 is arranged on the vertical threaded column 25 in a threaded sliding manner, the bottom end of the supporting arm 23 is welded with the top of the movable seat 26, an upper plate body 27 is welded at the top of the vertical cylinder 22, a rotating shaft 28 is rotatably arranged on the upper, the vertical guide threaded rod 29 passes through the movable seat 26 and is in threaded connection with the movable seat 26. An anti-shift sleeve 100 is welded to the outer wall of the rotating shaft 28 above and below the upper plate 27, respectively, to prevent the rotating shaft 28 from shifting on the upper plate 27.
A control box 5 is fixed on the outer wall of the pillar 14 through screws, a controller 51 for controlling the stepping motor 24 is installed in the control box 5, a lifting button group 52 is arranged on the outer wall of the control box 5, and the controller 51 is respectively electrically connected with the lifting button group 52 and the stepping motor 24 through wires. The controller 51 adopts S7-300PLC, a control program for driving the stepping motor 24 is embedded in the controller 51, and the model of the stepping motor 24 is 28BYJ 48.
The steering joint 4 comprises a threaded cross rod 41, a supporting plate 42 welded to the top of the supporting arm 23, a front retaining seat 43 and a rear retaining seat 44 welded to the top of the supporting plate 42, a rotating plate 45 is clamped between the front retaining seat 43 and the rear retaining seat 44, the threaded cross rod 41 sequentially penetrates through the front retaining seat 43, the rotating plate 45 and the rear retaining seat 44, the projector body 11 is installed on the top of the rotating plate 45, and the user can realize angle adjustment of the projector body 11 by rotating the rotating plate 45, so that the use is convenient. Two ends of the threaded cross rod 41 are respectively connected with a limiting nut 46 through threads, and the design ensures that the front baffle seat 43 and the rear baffle seat 44 can clamp the rotating plate 45.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (3)
1. The dustproof projector for teaching is characterized by comprising a projector body (11), a base (12) and a plurality of traveling wheels (13) fixed at the bottom of the base, wherein a supporting column (14) is fixed at the bottom of the base (12), a protective shell (15) with an opening at the top is fixed at the top of the supporting column (14), and a cover body (16) is covered at the top of the protective shell (15); the bottom of the protective shell (15) is fixed with a lower plate body (21), the top of the lower plate body (21) is fixed with a vertical cylinder (22), the inner cavity of the vertical cylinder (22) is provided with a steering joint (4), the top of the supporting arm (23) is fixed with a steering joint (4), the projector body (11) is fixed on the steering joint (4), the top of the lower plate body (21) and the inner cavity of the vertical cylinder (22) are provided with a stepping motor (24), the output shaft of the stepping motor (24) is fixed with a vertical threaded column (25), the upper thread of the vertical threaded column (25) is provided with a movable seat (26) in a sliding manner, the bottom of the supporting arm (23) is connected with the top of the movable seat (26), the top of the vertical cylinder (22) is fixed with an upper plate body (27), the upper plate body (27) is rotatably provided with a rotating shaft (28), the bottom of the rotating shaft (28) is fixed with a vertical guide threaded, the vertical guide threaded rod (29) penetrates through the movable seat (26) and is in threaded connection with the movable seat (26), a control box (5) is fixed on the outer wall of the strut (14), a controller (51) used for controlling the stepping motor is installed in the control box (5), a lifting button group (52) is arranged on the outer wall of the control box (5), and the controller is respectively in electrical connection with the lifting button group (52) and the stepping motor (24); turn to joint (4) including screw thread horizontal pole (41), fix hold up board (42) at support arm top, fix keep off seat (43) and back fender seat (44) before holding up board (42) top, it is equipped with a rotating plate (45) to press from both sides between seat (43) and the back fender seat (44) to keep off before, screw thread horizontal pole (41) pass in proper order keep off seat (43), rotating plate (45), back fender seat (44), the projector body is installed the top of rotating plate (45).
2. The projector as claimed in claim 1, wherein the threaded cross bar (41) is threaded with a stop nut (46) at each end.
3. The projector as claimed in claim 1, wherein an anti-shift cover (100) is fixed to the outer wall of the rotation shaft (28) above and below the upper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811275110.3A CN111102441A (en) | 2018-10-25 | 2018-10-25 | Can prevent dust projecting apparatus for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811275110.3A CN111102441A (en) | 2018-10-25 | 2018-10-25 | Can prevent dust projecting apparatus for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111102441A true CN111102441A (en) | 2020-05-05 |
Family
ID=70420244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811275110.3A Pending CN111102441A (en) | 2018-10-25 | 2018-10-25 | Can prevent dust projecting apparatus for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111102441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878674A (en) * | 2020-07-01 | 2020-11-03 | 河南护理职业学院 | Projection arrangement is used in teaching |
-
2018
- 2018-10-25 CN CN201811275110.3A patent/CN111102441A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878674A (en) * | 2020-07-01 | 2020-11-03 | 河南护理职业学院 | Projection arrangement is used in teaching |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200505 |
|
| WD01 | Invention patent application deemed withdrawn after publication |