CN109611658B - Automatic lifting hanger for multi-section aluminum alloy bamboo joints - Google Patents
Automatic lifting hanger for multi-section aluminum alloy bamboo joints Download PDFInfo
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- CN109611658B CN109611658B CN201811648791.3A CN201811648791A CN109611658B CN 109611658 B CN109611658 B CN 109611658B CN 201811648791 A CN201811648791 A CN 201811648791A CN 109611658 B CN109611658 B CN 109611658B
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- fixed
- bamboo
- aluminum alloy
- automatic lifting
- telescopic rod
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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
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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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
- F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
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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
- F16M11/18—Heads with mechanism for moving 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
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an automatic lifting hanger for multi-section aluminum alloy bamboo joints, which relates to the technical field of lifting frames and comprises a mounting frame, wherein a fixed plate is horizontally fixed in the mounting frame, a bamboo joint telescopic rod is vertically fixed at the bottom of the fixed plate, a projector is fixed at the bottom of the bamboo joint telescopic rod, one end, away from a wire rope winding ring plate, of the wire rope is fixed on the projector, a spiral steel sheet is fixed in the winding ring plate, and a clamping groove matched with a clamping column is formed in the bottom of the mounting frame; according to the invention, the steel wire rope is arranged to realize an elastic traction effect in the process of lifting the projector, and a traction and positioning effect is realized in the process of large-amplitude falling of the projector caused by mechanical failure of the bamboo joint telescopic rod, so that the projector is prevented from falling to cause danger.
Description
Technical Field
The invention relates to the technical field of lifting frames, in particular to an automatic lifting hanger for multi-section aluminum alloy bamboo joints.
Background
A projector is an optical instrument that magnifies the contour of a workpiece using an optical element and projects it onto a screen. It can be used for profile measurement by transmitted light, and also can be used for measuring the surface shape of a blind hole and observing the surface of a part by reflected light. The projector is particularly suitable for measuring complex contours and small workpieces, such as clock parts, stamping parts, electronic elements, templates, dies, threads, gears, forming cutters and the like, has high inspection efficiency and convenient use, is widely applied to metering rooms and production workshops, and is particularly suitable for the industries of instruments, meters and clocks.
Present projecting apparatus is for the occuping of structure reduction space, and the lift of the formula of can accomodating is realized through the installation of lift gallows to not few projecting apparatus, but the operation stationarity of present lift gallows lift process is relatively poor, lacks effectual protection device that prevents falling when meetting the proruption fault of falling, for this reason, provides a multisection aluminum alloy bamboo joint automatic rising gallows now to solve above-mentioned technical problem.
Disclosure of Invention
The invention aims to provide an automatic lifting hanger for multi-section aluminum alloy bamboo joints, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a multisection aluminum alloy bamboo joint automatic rising gallows, includes the mounting bracket, the level is fixed with the fixed plate in the mounting bracket, the vertical bamboo joint telescopic link that is fixed with in fixed plate bottom, the fixed plate bottom hangs and establishes and be fixed with the mount, rotates on the mount and installs the fixed pulley, mount bottom slidable mounting has the spur rack, rotate on the mount install with straight rack meshed drive gear, be fixed with the winding ring board on the drive gear, winding ring board surface is around being equipped with wire rope, wire rope walks around the fixed pulley, wire rope keeps away from winding ring board one end and fixes on the projector, winding ring inboard is fixed with the spiral steel sheet, spiral steel sheet central point is fixed in drive gear center department, the spur rack top is fixed with the joint post with mount slidable mounting, the mount bottom is seted up with the joint groove of joint post adaptation.
As a modified scheme of the invention: the fixed plate is fixed with the double-shaft motor, two output shafts of the double-shaft motor are coaxially fixed with a driving shaft, a threaded column is coaxially fixed on the driving shaft, and a threaded connecting sleeve is arranged on the threaded column and is provided with a threaded sleeve block.
As a modified scheme of the invention: the mounting bracket lower extreme rotates installs the commentaries on classics board, and the vertical guide arm that is fixed with of mounting bracket inside wall has a sliding sleeve on the guide arm, and it has the pull rod to articulate between sliding sleeve and the screw cover piece, and it has the lower link to articulate between sliding sleeve and the commentaries on classics board.
As a modified scheme of the invention: the driving shaft is sleeved with a limiting spring, and the diameter of the threaded column is larger than that of the driving shaft.
As a modified scheme of the invention: and the thread directions of the two thread columns connected to the driving shaft are opposite.
As a modified scheme of the invention: the top transversely has seted up the guide way in the mounting bracket, and fixed mounting has the guide block that the slip was inlayed and is established in the guide way on the screw thread cover block.
As a modified scheme of the invention: the fixing frame is fixedly provided with a stepping motor, an output shaft of the stepping motor is coaxially fixed with a driving gear, a bamboo joint telescopic rod is pivoted at the bottom of the fixing plate, and a driven gear which is meshed and connected with the driving gear is fixedly sleeved on the bamboo joint telescopic rod.
As a modified scheme of the invention: the bamboo joint telescopic rod is made of magnesium-aluminum alloy.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the steel wire rope is arranged to realize an elastic traction effect in the process of lifting the projector, and a traction and positioning effect is realized in the process of large-amplitude falling of the projector caused by mechanical failure of the bamboo joint telescopic rod, so that the projector is prevented from falling to cause danger.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged view of a portion B in fig. 1.
In the figure: 1-mounting frame, 2-upper pull rod, 3-thread sleeve block, 4-guide block, 5-guide groove, 6-driven gear, 7-bamboo joint telescopic rod, 8-stepping motor, 9-driving gear, 10-fixing plate, 11-steel wire rope, 12-projector, 13-rotating plate, 14-lower pull rod, 15-guide rod, 16-sliding sleeve, 17-fixing frame, 18-fixed pulley, 19-transmission gear, 20-winding ring plate, 21-spiral steel sheet, 22-straight rack, 23-clamping groove, 24-clamping column, 25-double-shaft motor, 26-driving shaft, 27-thread column and 28-limit spring.
Detailed Description
The technical scheme of the patent is further described in detail by combining the following specific embodiments:
example 1
Please refer to fig. 1-3, an automatic lifting hanger for multi-section aluminum alloy bamboo joints comprises an installation frame 1, a fixing plate 10 is horizontally fixed in the installation frame 1, a bamboo joint telescopic rod 7 is vertically fixed at the bottom of the fixing plate 10, a projector 12 is fixed at the bottom of the bamboo joint telescopic rod 7, the bamboo joint telescopic rod 7 can drive the projector 12 to move downwards, the installation frame 1 is embedded and fixedly installed on a ceiling, the projector 12 can be driven to extend out of the installation frame 1 when the bamboo joint telescopic rod 7 extends downwards, and at the moment, the projector 12 can perform projection work.
The bottom of the fixing plate 10 is hung and fixed with a fixing frame 17, the fixing frame 17 is rotated and installed with a fixed pulley 18, the fixing frame 17 is slidably installed at the bottom of a spur rack 22, a transmission gear 19 meshed with the spur rack 22 is rotatably installed on the fixing frame 17, a winding ring plate 20 is fixed on the transmission gear 19, a steel wire rope 11 is wound on the surface of the winding ring plate 20, the steel wire rope 11 bypasses the fixed pulley 18, one end of the winding ring plate 20, away from the steel wire rope 11, is fixed on the projector 12, a spiral steel sheet 21 is fixed in the winding ring plate 20, the center end of the spiral steel sheet 21 is fixed at the center of the transmission gear 19, a clamping column 24 slidably installed with the fixing frame 17 is fixed at the top of the spur rack 22, and.
In the descending process of the projector 12, the steel wire rope 11 pulls the winding ring plate 20 to rotate anticlockwise together with the transmission gear 19, the transmission gear 19 drives the straight rack 22 to slide leftwards, at the moment, the spiral steel sheet 21 rotates and deforms to spirally contract to accumulate elastic force, when the bamboo joint telescopic rod 7 breaks down to cause the projector 12 to fall down greatly, the downward pulling displacement of the steel wire rope 11 is greatly increased, at the moment, the straight rack 22 drives the clamping column 24 on the straight rack 22 to slide leftwards and be clamped in the clamping groove 23, the locking of the position of the straight rack 22 is realized, at the moment, the transmission gear 19 is locked and fixed, the paying-off action of the winding ring plate 20 to the steel wire rope 11 is avoided, the continuous falling of the projector 12 is effectively prevented, and the good anti-falling protection.
Example 2
In addition, in addition to embodiment 1, a double-shaft motor 25 is fixed on the fixing plate 10, a driving shaft 26 is coaxially fixed on both output shafts of the double-shaft motor 25, a threaded column 27 is coaxially fixed on the driving shaft 26, and a threaded sleeve block 3 is threadedly connected and sleeved on the threaded column 27.
Further, the lower end of the mounting frame 1 is rotatably provided with a rotating plate 13, a guide rod 15 is vertically fixed on the inner side wall of the mounting frame 1, a sliding sleeve 16 is slidably mounted on the guide rod 15, an upper pull rod 2 is hinged between the sliding sleeve 16 and the threaded sleeve block 3, a lower pull rod 14 is hinged between the sliding sleeve 16 and the rotating plate 13, and two threaded columns 27 connected to the driving shaft 26 are opposite in threaded direction.
The double-shaft motor 25 can drive the drive shaft 26 rotatory, the drive shaft 26 drives the coaxial fixed screw post 27 rotation with it, screw post 27 drives screw cover block 3 and transversely removes, screw cover block 3 slides along guide arm 15 through 2 pulling sliding sleeves 16 of upper pull rod, guide arm 15 drives commentaries on classics board 13 through lower pull rod 14 and rotates, the corotation or the reversal of double-shaft motor 25 can realize upwards or the downstream of sliding sleeve 16, and then realize commentaries on classics board 13 to inside rotation of mounting bracket 1 or to the inside rotation of mounting bracket 1, the realization is to the closure and the opening of mounting bracket 1 bottom. When the projector 12 is not used, the inner space of the mounting frame 1 is well sealed and protected, dust is prevented from entering, and the projector 12 is prevented from being damaged
Further, the driving shaft 26 is sleeved with a limiting spring 28, the diameter of the threaded column 27 is larger than that of the driving shaft 26, and the limiting spring 28 plays a role in elastic limiting of the threaded sleeve block 3, so that excessive transverse movement of the threaded sleeve block is avoided, and excessive deflection of the rotating plate 13 is avoided.
Further, a guide groove 5 is transversely formed in the top of the mounting frame 1, a guide block 4 embedded in the guide groove 5 in a sliding mode is fixedly mounted on the threaded sleeve block 3, and in the transverse moving process of the threaded sleeve block 3, the guide block 4 slides transversely along the guide groove 5 to play a good guiding role and greatly improve the rotating stability of the rotating plate 13.
Furthermore, a stepping motor 8 is fixed on the fixing frame 17, a driving gear 9 is coaxially fixed on an output shaft of the stepping motor 8, the bamboo joint telescopic rod 7 is pivoted at the bottom of the fixing plate 10, and a driven gear 6 which is in meshed connection with the driving gear 9 is fixedly sleeved on the bamboo joint telescopic rod 7. Can drive the rotation of driving gear 9 marching type through step motor 8, driving gear 9 can drive the rotation of 7 marching types of bamboo joint telescopic link through driven gear 6 with it meshing, has realized the deflection angle of the marching type of projecting apparatus 12 promptly, adjusts and uses more convenient nimble.
Further, bamboo joint telescopic link 7 material is magnesium aluminum alloy, adopts magnesium aluminum alloy to make bamboo joint telescopic link 7 reduce weight when having guaranteed structural strength, and the lift of projecting apparatus 12 with turn to more nimble.
In conclusion, in the device, the mounting frame 1, the stepping motor 8, the double-shaft motor 25 and the like are directly applied to the prior art, and the specific structures and the connection relations of the steel wire rope 11, the winding ring plate 20, the transmission gear 19, the straight rack 22, the clamping column 24 and other parts are innovation points of the invention; according to the invention, the steel wire rope 11 is arranged to realize an elastic traction effect in the process of lifting the projector 12, the projector 12 is pulled and positioned in the process of falling greatly due to mechanical failure of the bamboo joint telescopic rod 7, so that the danger caused by falling of the projector 12 is avoided, the rotating plate 13 arranged at the bottom of the mounting frame 1 can be opened and closed in the process of lifting the projector 12, when the projector 12 is not used, the inner space of the mounting frame 1 is well sealed and protected, dust is prevented from entering, and the projector 12 is prevented from being damaged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A multi-section aluminum alloy bamboo joint automatic lifting hanger comprises a mounting rack (1), wherein a fixing plate (10) is horizontally fixed in the mounting rack (1), and is characterized in that a bamboo joint telescopic rod (7) is vertically fixed at the bottom of the fixing plate (10), a projector (12) is fixed at the bottom of the bamboo joint telescopic rod (7), a fixing frame (17) is fixedly hung at the bottom of the fixing plate (10), a fixed pulley (18) is rotatably mounted on the fixing frame (17), a straight rack (22) is slidably mounted at the bottom of the fixing frame (17), a transmission gear (19) meshed with the straight rack (22) is rotatably mounted on the fixing frame (17), a winding ring plate (20) is fixed on the transmission gear (19), a steel wire rope (11) is wound on the surface of the winding ring plate (20), the steel wire rope (11) is wound around the fixed pulley (18), one end, far away from the winding ring plate (20), spiral steel sheet (21) are fixed in winding ring plate (20), spiral steel sheet (21) central point is fixed in drive gear (19) center department, spur rack (22) top be fixed with mount (17) slidable mounting's joint post (24), joint groove (23) with joint post (24) adaptation are seted up to mount (17) bottom.
2. The automatic lifting hanger for the bamboo joints of the multi-section aluminum alloy according to claim 1, wherein a double-shaft motor (25) is fixed on the fixing plate (10), a driving shaft (26) is coaxially fixed on each of two output shafts of the double-shaft motor (25), a threaded column (27) is coaxially fixed on the driving shaft (26), and a threaded sleeve block (3) is sleeved on the threaded column (27) in a threaded connection manner.
3. The automatic lifting hanger for the bamboo joints of the multi-section aluminum alloy according to claim 2, wherein a rotating plate (13) is rotatably mounted at the lower end of the mounting frame (1), a guide rod (15) is vertically fixed on the inner side wall of the mounting frame (1), a sliding sleeve (16) is slidably mounted on the guide rod (15), an upper pull rod (2) is hinged between the sliding sleeve (16) and the threaded sleeve block (3), and a lower pull rod (14) is hinged between the sliding sleeve (16) and the rotating plate (13).
4. The automatic lifting hanger for the multi-section aluminum alloy bamboo joints as claimed in claim 2, wherein a limiting spring (28) is sleeved on the driving shaft (26), and the diameter of the threaded column (27) is larger than that of the driving shaft (26).
5. The automatic lifting hanger for the bamboo joints of aluminum alloy in multiple sections according to claim 2, wherein the two threaded columns (27) connected to the driving shaft (26) have opposite thread directions.
6. The automatic lifting hanger for the bamboo joints of the aluminum alloys according to claim 2 or 3, characterized in that a guide groove (5) is transversely formed in the top of the mounting frame (1), and a guide block (4) which is slidably embedded in the guide groove (5) is fixedly mounted on the threaded sleeve block (3).
7. The automatic lifting hanger for the bamboo joints of the aluminum alloys in multiple sections according to claim 1, wherein a stepping motor (8) is fixed on the fixing frame (17), a driving gear (9) is coaxially fixed on an output shaft of the stepping motor (8), the bamboo joint telescopic rod (7) is pivoted at the bottom of the fixing plate (10), and a driven gear (6) meshed with the driving gear (9) and fixedly arranged on the bamboo joint telescopic rod (7) in a sleeved mode.
8. The automatic lifting hanger for the multi-section aluminum alloy bamboo joints as claimed in claim 1, wherein the bamboo joint telescopic rod (7) is made of magnesium aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648791.3A CN109611658B (en) | 2018-12-30 | 2018-12-30 | Automatic lifting hanger for multi-section aluminum alloy bamboo joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648791.3A CN109611658B (en) | 2018-12-30 | 2018-12-30 | Automatic lifting hanger for multi-section aluminum alloy bamboo joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109611658A CN109611658A (en) | 2019-04-12 |
| CN109611658B true CN109611658B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811648791.3A Active CN109611658B (en) | 2018-12-30 | 2018-12-30 | Automatic lifting hanger for multi-section aluminum alloy bamboo joints |
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| Country | Link |
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| CN (1) | CN109611658B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769640A (en) * | 2019-11-18 | 2020-02-07 | 河南省驻马店财经学校 | Outdoor portable computer network equipment |
| CN112856116A (en) * | 2020-12-30 | 2021-05-28 | 广户联(广州)教育科技有限公司 | Projection arrangement for upset elevation structure and education platform |
| CN114087478A (en) * | 2021-11-19 | 2022-02-25 | 江苏首擎软件科技有限公司 | Long-focus projector capable of short-distance and bidirectional projection |
| CN114576532B (en) * | 2022-03-01 | 2023-06-30 | 峥嵘智能科技(南京)有限公司 | Video monitoring device for real-time motion quantity statistics in body teaching process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3411959A1 (en) * | 1984-03-30 | 1985-10-10 | Karl 8011 Grasbrunn Maslo | Lifting tool |
| DE4101851A1 (en) * | 1991-01-23 | 1992-07-30 | Kniele Erwin Ing Grad | Wear and overload signal system for charger hoists e.g. for concrete - activates warning signal or switches from drive system with overload or wear of carrying rope and prevents fall of hoist bucket |
| CN2633846Y (en) * | 2003-05-26 | 2004-08-18 | 黄光智 | Rope broken safety protector for lift |
| CN101030026A (en) * | 2007-04-12 | 2007-09-05 | 沈阳飞机工业（集团）有限公司 | Elevator of projector |
| CN106895240A (en) * | 2015-12-18 | 2017-06-27 | 哈尔滨歌瑞得莱机器人制造有限公司 | Anti-rotation is without cable trash rack underwater camera device |
| CN107906310A (en) * | 2017-11-24 | 2018-04-13 | 郑州涵莱智能科技有限公司 | A kind of height adjustment device of smart projector |
| CN207334183U (en) * | 2017-10-20 | 2018-05-08 | 广州聚德智能视听设备有限公司 | A kind of telescopic projector's electric hanger of ring |
-
2018
- 2018-12-30 CN CN201811648791.3A patent/CN109611658B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3411959A1 (en) * | 1984-03-30 | 1985-10-10 | Karl 8011 Grasbrunn Maslo | Lifting tool |
| DE4101851A1 (en) * | 1991-01-23 | 1992-07-30 | Kniele Erwin Ing Grad | Wear and overload signal system for charger hoists e.g. for concrete - activates warning signal or switches from drive system with overload or wear of carrying rope and prevents fall of hoist bucket |
| CN2633846Y (en) * | 2003-05-26 | 2004-08-18 | 黄光智 | Rope broken safety protector for lift |
| CN101030026A (en) * | 2007-04-12 | 2007-09-05 | 沈阳飞机工业（集团）有限公司 | Elevator of projector |
| CN106895240A (en) * | 2015-12-18 | 2017-06-27 | 哈尔滨歌瑞得莱机器人制造有限公司 | Anti-rotation is without cable trash rack underwater camera device |
| CN207334183U (en) * | 2017-10-20 | 2018-05-08 | 广州聚德智能视听设备有限公司 | A kind of telescopic projector's electric hanger of ring |
| CN107906310A (en) * | 2017-11-24 | 2018-04-13 | 郑州涵莱智能科技有限公司 | A kind of height adjustment device of smart projector |
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| CN109611658A (en) | 2019-04-12 |
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