CN2576699Y - Electric projector lifting hanger - Google Patents
Electric projector lifting hanger Download PDFInfo
- Publication number
- CN2576699Y CN2576699Y CN 02282008 CN02282008U CN2576699Y CN 2576699 Y CN2576699 Y CN 2576699Y CN 02282008 CN02282008 CN 02282008 CN 02282008 U CN02282008 U CN 02282008U CN 2576699 Y CN2576699 Y CN 2576699Y
- Authority
- CN
- China
- Prior art keywords
- main shaft
- utility
- model
- worm gear
- worm wheel
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a lifting hanger of an electric projector, which solves the problems of loud noise, inaccurate positioning and unsafe lifting. The utility model is characterized in that both ends of a main shaft (2) are arranged on a host machine frame (1) through a bearing (6), a worm wheel (4) is fixed in the middle of the main shaft (2), two reeling wheels (8) are symmetrically distributed on both ends of the worm wheel (4), and an endless screw (5) is engaged with the worm wheel (4); both ends of the endless screw (5) are respectively provided with a low-speed synchronous motor (3) and a photoelectric counter (7) in an axial direction, and the reeling wheels (8) are provided with a metal steel plate belt (9) which matches with the reeling wheels (8). The utility model has the advantages of small noise, accurate positioning and high safety.
Description
Technical field:
The utility model relates to a kind of multimedia conferencing automatic control device, belongs to a kind of dynamoelectric projection machine lifting hanger.
Background technology:
General multimedia conferencing need play back with projector, and projector is placed on projector's lifting hanger sometimes.At present, the dynamoelectric projection machine lifting hanger of producing adopts high rotating speed alternating current dynamo both at home and abroad, drives the main shaft rotation through gear and chain, and lay winding wire ropes on main shaft drives steel rope and drives projector's frame lifting.Steel rope is understood left and right sides play and suspension bracket is tilted during lifting, cause projected picture to tilt, when cutting off the power supply, motor can produce inertia displacement, the location is inaccurate, all needs to use electromagnetic brake usually, also will adopt vehicle safety to bring the auxiliary lifting work of finishing, this device, dry sound is big, and the location is inaccurate, and safety performance is low.
Summary of the invention:
Big in order to overcome dry sound, the location is inaccurate, the deficiency that safety performance is low, and the utility model provides a kind of dynamoelectric projection machine lifting hanger, and this crane can reduce dry sound, and accurate positioning guarantees safety performance, makes drop shadow effect be in optimum regime.
The technical scheme that its technical matters that solves the utility model adopts is: the two ends of main shaft by bearing installation on mainframe, intrinsic worm gear placed in the middle on main shaft, two rolling wheels of worm gear two ends symmetrical distribution, worm and wheel is meshed, the two end axles of worm screw is equipped with the metallic steel strip that matches with it to being connected with low speed synchromotor and photoelectric counter respectively on the rolling wheel.
The beneficial effects of the utility model are: place on the rolling wheel because the metallic steel strip is coincide, put two strip metal steel plate bands drive projection frame at the rolling wheel volume and do dipping and heaving, suspension bracket is tilted, more the picture tilt phenomenon can not occur; Moreover by photoelectric counter control location, accurate positioning; Owing to adopted worm screw, worm gear to substitute gear, chain, make that dry sound is little simultaneously.
Description of drawings:
Accompanying drawing 1 is a front view of the present utility model;
Accompanying drawing 2 is birds-eye vieies of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
Shown in Fig. 1,1-mainframe, 2-main shaft, 3-low speed synchromotor, 4-worm gear, 5-worm screw, 6-bearing, 7-photoelectric counter, 8-rolling wheel; Shown in Fig. 2,9-metallic steel strip.
This lifting hanger is made up of mainframe 1, main shaft 2, the two ends of main shaft 2 are installed on the mainframe 1 by bearing 6, main shaft 2 is rotated on mainframe 1, intrinsic worm gear 4 placed in the middle on main shaft 2, worm gear 4 is meshed with worm screw 5, two rolling wheels 8 of worm gear 4 two ends symmetrical distribution, and the top axial of worm screw 5 is connected with low speed synchromotor 3, the lower end is connected with photoelectric counter 7, and the metallic steel strip 9 that matches with it is housed on the rolling wheel 8.
Low speed synchromotor 3 is passed to worm screw 5 with power when energized, worm screw 5 is meshed with worm gear 4, worm gear 4 is received driving force and is driven main shaft 2 rotations, rolling wheel 8 rotates with main shaft 2, being contained in metallic steel strip 9 on the rolling wheel 8 rolls up to put with the rotation of rolling wheel 8 and causes projector's crane up-and-down movement, make metallic steel strip 9 unlikely left and right sides plaies, also avoided the suspension bracket inclination simultaneously, reach the effect of safe lifting.
When cutting off the electricity supply, low speed synchromotor 3 stops operating, worm screw 5 does not change, control worm gear 4 does not change, main shaft 2 corresponding stopping, and rolling wheel 8 is motionless, the photoelectric counter 7 that links to each other with worm screw 5, can convert optical signal to electric signal automatically, write down each turned position constantly, reach the purpose of accurate positioning by storage chip.Adopted worm screw 5, worm gear 4 to substitute gear, chain, avoided inertia displacement and the sinkage that produces, made that dry sound is little, safety performance is good, and drop shadow effect is good.
Claims (1)
1, a kind of dynamoelectric projection machine lifting hanger, form by mainframe (1), main shaft (2), it is characterized in that: the two ends of main shaft (2) are installed on the mainframe (1) by bearing (6), go up intrinsic worm gear placed in the middle (4) at main shaft (2), worm gear (4) two ends symmetrical distribution two rolling wheels (8), worm screw (5) is meshed with worm gear (4), and the two end axles of worm screw (5) is equipped with the metallic steel strip (9) that matches with it to being connected with low speed synchromotor (3) and photoelectric counter (7) respectively on the rolling wheel (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282008 CN2576699Y (en) | 2002-10-21 | 2002-10-21 | Electric projector lifting hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282008 CN2576699Y (en) | 2002-10-21 | 2002-10-21 | Electric projector lifting hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2576699Y true CN2576699Y (en) | 2003-10-01 |
Family
ID=33744202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02282008 Expired - Fee Related CN2576699Y (en) | 2002-10-21 | 2002-10-21 | Electric projector lifting hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2576699Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384713C (en) * | 2004-12-10 | 2008-04-30 | 武汉科技大学 | Box type industrial robot movable lifting mechanism |
| CN104633409A (en) * | 2015-02-28 | 2015-05-20 | 朱贤华 | Spiral fine tuning mechanism of lifting worms of projector |
| CN104635412A (en) * | 2015-02-27 | 2015-05-20 | 朱贤华 | Projector lifting gear spiral trimming mechanism |
| CN104948890A (en) * | 2015-06-18 | 2015-09-30 | 安庆联泰电子科技有限公司 | Lifting type projector hanging bracket |
-
2002
- 2002-10-21 CN CN 02282008 patent/CN2576699Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384713C (en) * | 2004-12-10 | 2008-04-30 | 武汉科技大学 | Box type industrial robot movable lifting mechanism |
| CN104635412A (en) * | 2015-02-27 | 2015-05-20 | 朱贤华 | Projector lifting gear spiral trimming mechanism |
| CN104633409A (en) * | 2015-02-28 | 2015-05-20 | 朱贤华 | Spiral fine tuning mechanism of lifting worms of projector |
| CN104948890A (en) * | 2015-06-18 | 2015-09-30 | 安庆联泰电子科技有限公司 | Lifting type projector hanging bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |