CN107461575B - Single-reverse tripod with translation function - Google Patents

Single-reverse tripod with translation function Download PDF

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Publication number
CN107461575B
CN107461575B CN201710632066.6A CN201710632066A CN107461575B CN 107461575 B CN107461575 B CN 107461575B CN 201710632066 A CN201710632066 A CN 201710632066A CN 107461575 B CN107461575 B CN 107461575B
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CN
China
Prior art keywords
translation
fixedly connected
tripod
rod
box
Prior art date
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Application number
CN201710632066.6A
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Chinese (zh)
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CN107461575A (en
Inventor
许德焕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linyi Luokai Construction Engineering Co.,Ltd.
Original Assignee
Zhejiang Xingdao Machinery Co Ltd
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Priority to CN201710632066.6A priority Critical patent/CN107461575B/en
Publication of CN107461575A publication Critical patent/CN107461575A/en
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Publication of CN107461575B publication Critical patent/CN107461575B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/045Allowing translations adapted to left-right translation movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/046Allowing translations adapted to upward-downward translation movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/18Heads with mechanism for moving the apparatus relatively to the stand
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20Undercarriages with or without wheels
    • F16M11/2085Undercarriages with or without wheels comprising means allowing sideward adjustment, i.e. left-right translation of the head relatively to the undercarriage
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/56Accessories
    • G03B17/561Support related camera accessories

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Accessories Of Cameras (AREA)

Abstract

the invention discloses a single-reverse tripod with a translation function, which comprises a tripod head, wherein the bottom of the tripod head is fixedly connected with a translation device, two sides of the translation device are rotatably connected with translation plates through moving parts, the bottom of the translation device is fixedly connected with a supporting table, the bottom of the supporting table is rotatably connected with a foot rest through a moving part, the bottom of the translation device is fixedly connected with an intermediate rod, the bottom end of the intermediate rod penetrates through the supporting table and extends to the bottom of the supporting table, and two sides of the bottom end of the intermediate rod are rotatably connected with supporting cylinders through the moving parts. This single anti-tripod with translation function makes the cloud platform can drive the horizontal migration that single anti-camera is stable on the tripod, when panorama shooting etc. has the camera lens to remove needs, can not hold the camera to remove by the manual work, has kept the stability of single anti-camera, has reached the translation and can not the effect of camera lens shake.

Description

Single-reverse tripod with translation function
Technical Field
the invention relates to the technical field of digital camera accessories, in particular to a single-lens reflex tripod with a translation function.
background
The digital single lens reflex camera is a single lens reflex digital camera, namely, the whole camera moves caused by the turning-up action of a reflector. In the single-lens reflex shooting process, the vibration of the camera lens greatly affects the picture, even a slight vibration, and the vibration cannot be detected, but if an accurate picture is shot at a low shutter speed, for example, when a telephoto lens is used for shooting under weak light, the vibration can be very problematic for imaging, and the tripod is mainly used for stabilizing the camera to achieve certain shooting effects in the aspects of night view shooting, micro-distance shooting and the like, and the shooting skill is often not away from the help of the tripod.
At present, the tripod on the market has a lot, and some are expensive, but the function is very different, present tripod ubiquitous can not let the problem of camera translation, though stability and bearing performance are all very fatal under certain circumstances, for example panorama shooting can only rotation angle or manual translation, still film shooting etc. all hold the camera translation by the people, like this the camera shake will bring very big influence, consequently, the problem that the tripod does not have the translation function urgently needs to be solved.
disclosure of Invention
aiming at the defects of the prior art, the invention provides a single-reverse tripod with a translation function, and solves the problem that the tripod does not have the translation function.
In order to achieve the purpose, the invention is realized by the following technical scheme:
The utility model provides a singly turn over tripod with translation function, includes the cloud platform, the bottom fixedly connected with translation device of cloud platform to translation device's both sides all rotate through the moving part and are connected with the translation board, translation device's bottom fixedly connected with brace table to the bottom of brace table rotates through the moving part and is connected with the foot rest, translation device's bottom fixedly connected with intermediate lever, the bottom of intermediate lever runs through brace table and extends to the bottom of brace table, the both sides of intermediate lever bottom all rotate through the moving part and are connected with a support section of thick bamboo, the bottom fixedly connected with of brace table one end and the support dop of support joint looks adaptation are kept away from to the translation board, the first slide rail of top fixedly connected with of translation board to first cogged rail has been seted up at the top of.
The translation device is including the translation case, the top and the cloud platform fixed connection of translation case to one side of translation case runs through there is the dwang, the dwang is located the outside one end fixedly connected with hand wheel of translation case to the fixed surface of dwang is connected with the gear, the bottom of gear runs through the bottom that the translation case just extended to the translation case, there is fixed case bottom of translation case through second slide rail sliding connection to the second rack with gear engagement is seted up at the top of second slide rail.
Preferably, the inner wall of the foot rest is connected with a telescopic rod in a sliding mode, and the bottom end of the telescopic rod is connected with a sucker in a rotating mode through a movable piece.
Preferably, the inner wall of the supporting cylinder is connected with a supporting rod in a sliding mode, and one end, far away from the middle rod, of the supporting cylinder is provided with a fastening nut.
Preferably, the top end of the supporting rod is fixedly connected with a supporting joint, and two sides of the middle rod are fixedly connected with fixing clamps.
Preferably, both sides at fixed case top all are provided with set nut to the equal fixedly connected with connector in both sides of fixed case, the axle center department of connector is connected with the translation board rotation through the moving part.
Preferably, one side of the holder is provided with a transverse handle, the other side of the holder is provided with a longitudinal handle, and the holder is provided with a knob.
Advantageous effects
The invention provides a single-reverse tripod with a translation function. The method has the following beneficial effects:
(1) This single anti-tripod with translation function, bottom fixedly connected with translation case through the cloud platform, dwang fixedly connected with gear is passed through to the inside of translation case, the bottom meshing of gear has the second rack of seting up on the second slide rail, and the bottom of translation case has the fixed case through second slide rail sliding connection, the both sides of fixed case all rotate through the moving part and are connected with the translation board, the first slide rail of top fixedly connected with of translation board, and first rack has been seted up at the top of first slide rail, make the cloud platform can drive the stable horizontal migration of single anti-camera on the tripod, when having camera lens removal needs such as panorama shooting, can not embrace the camera removal by the manual work, the stability of camera has been kept, the effect that translation and can not the camera lens shake has been reached.
(2) This single anti-tripod with translation function, bottom fixedly connected with intermediate lever through the fixed case, the both sides of intermediate lever bottom all rotate through the moving part and are connected with a support section of thick bamboo, a support section of thick bamboo passes through bracing piece fixedly connected with support dop, translation board bottom fixedly connected with and the support dop of support joint looks adaptation, make the tripod still can play fine supporting effect at the in-process that the camera removed, strengthened the protection to the camera.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the translating plate of the present invention;
Fig. 3 is a schematic structural diagram of the translation device of the present invention.
In the figure: the device comprises a tripod head 1, a translation device 2, a translation box 21, a rotating rod 22, a hand wheel 23, a gear 24, a fixed box 25, a second sliding rail 26, a second toothed rail 27, a positioning nut 28, a connector 29, a translation plate 3, a supporting platform 4, a middle rod 5, a foot rest 6, a supporting cylinder 7, a supporting rod 8, a fastening nut 9, a supporting joint 10, a fixing clamp 11, a telescopic rod 12, a sucking disc 13, a supporting clamping head 14, a first sliding rail 15, a first toothed rail 16, a transverse handle 17, a knob 18 and a longitudinal handle 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
referring to fig. 1-3, the present invention provides a technical solution:
A single-reverse tripod with a translation function comprises a tripod head 1, wherein one side of the tripod head 1 is provided with a transverse handle 17, the other side of the tripod head 1 is provided with a longitudinal handle 19, the tripod head 1 is provided with a knob 18, the bottom of the tripod head 1 is fixedly connected with a translation device 2, two sides of the translation device 2 are rotatably connected with a translation plate 3 through a movable part, the bottom of one end, away from a support platform 4, of the translation plate 3 is fixedly connected with a support chuck 14 matched with the support joint 10, the top of the translation plate 3 is fixedly connected with a first slide rail 15, the top of the first slide rail 15 is provided with a first rack rail 16, the bottom of the translation device 2 is fixedly connected with the support platform 4, the translation device 2 comprises a translation box 21, the top of the translation box 21 is fixedly connected with the tripod head 1, one side of the translation box 21 is penetrated with a rotating rod 22, one end, located outside the translation, and the surface of the rotating rod 22 is fixedly connected with a gear 24, the bottom of the gear 24 penetrates through the translation box 21 and extends to the bottom of the translation box 21, the bottom of the translation box 21 is connected with a fixed box 25 in a sliding way through a second sliding rail 26, the top of the second sliding rail 26 is provided with a second rack 27 meshed with the gear 24, the second sliding rail 26 has the same structure as the first sliding rail 15, the second rack 27 has the same structure as the first rack 16, two sides of the top of the fixed box 25 are both provided with positioning nuts 28, two sides of the fixed box 25 are both fixedly connected with connectors 29, the axis of the connector 29 is rotatably connected with the translation plate 3 through a moving part, the bottom of the support table 4 is rotatably connected with a foot rest 6 through a moving part, the inner wall of the foot rest 6 is slidably connected with a telescopic rod 12, the bottom end of the telescopic rod 12 is rotatably connected with a suction cup 13 through a moving part, the, the bottom of intermediate lever 5 runs through brace table 4 and extends to the bottom of brace table 4, and the both sides of 5 bottoms of intermediate lever all rotate through the moving part and are connected with a support section of thick bamboo 7, and the inner wall sliding connection of a support section of thick bamboo 7 has bracing piece 8 to the one end that intermediate lever 5 was kept away from to a support section of thick bamboo 7 is provided with fastening nut 9, and the top fixedly connected with support joint 10 of bracing piece 8, and the equal fixedly connected with fixation clamp 11 in both sides of intermediate lever 5.
When the camera fixing device is used, a camera is fixed on the tripod head 1, the foot stool 6 is opened and supported on the bottom surface stably, the camera is driven by the middle rod 5 to move up and down to adjust the height, the angle of a camera lens is adjusted by the transverse handle 17, the knob 18 and the longitudinal handle 19, the supporting barrel 7 is put down from the fixing frame 11, the translation plate 3 is held to the position horizontal to the fixed box 25 and the moving box 21, the supporting rod 8 in the supporting barrel 7 is pulled out, the supporting joint 10 is clamped into the supporting chuck 14, the fastening nut 9 is screwed down, preparation is completed, when the lens needs to be moved, the positioning nut is screwed down, the hand wheel 23 is shaken, the gear 24 is driven by the rotating rod 22 to rotate on the first tooth track 16 and the second tooth track 27, and the translation box 21 is driven to move horizontally on the second tooth track of the fixed box 25 and the first slide track 15 of the translation plate 3.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a single anti-tripod with translation function, includes cloud platform (1), its characterized in that: the bottom of the cradle head (1) is fixedly connected with a translation device (2), the two sides of the translation device (2) are rotatably connected with a translation plate (3) through moving parts, the bottom of the translation device (2) is fixedly connected with a support platform (4), the bottom of the support platform (4) is rotatably connected with a foot rest (6) through the moving parts, the bottom of the translation device (2) is fixedly connected with an intermediate rod (5), the bottom end of the intermediate rod (5) penetrates through the support platform (4) and extends to the bottom of the support platform (4), the two sides of the bottom end of the intermediate rod (5) are rotatably connected with support cylinders (7) through the moving parts, the bottom of one end, far away from the support platform (4), of the translation plate (3) is fixedly connected with a support chuck (14) matched with a support joint (10), and the top of the translation plate (3) is fixedly, a first rack (16) is arranged at the top of the first sliding rail (15);
The translation device (2) comprises a translation box (21), the top of the translation box (21) is fixedly connected with the holder (1), a rotating rod (22) penetrates through one side of the translation box (21), one end, located outside the translation box (21), of the rotating rod (22) is fixedly connected with a hand wheel (23), a gear (24) is fixedly connected to the surface of the rotating rod (22), the bottom of the gear (24) penetrates through the translation box (21) and extends to the bottom of the translation box (21), the bottom of the translation box (21) is slidably connected with a fixed box (25) through a second sliding rail (26), and a second rack (27) meshed with the gear (24) is arranged at the top of the second sliding rail (26);
The inner wall of the supporting cylinder (7) is connected with a supporting rod (8) in a sliding manner, and a fastening nut (9) is arranged at one end, far away from the middle rod (5), of the supporting cylinder (7);
The top end of the supporting rod (8) is fixedly connected with a supporting joint (10), and two sides of the middle rod (5) are fixedly connected with fixing clamps (11).
2. A single-reaction tripod with translation function according to claim 1, wherein: the inner wall of the foot rest (6) is connected with a telescopic rod (12) in a sliding mode, and the bottom end of the telescopic rod (12) is connected with a sucker (13) in a rotating mode through a moving piece.
3. A single-reaction tripod with translation function according to claim 1, wherein: both sides at fixed case (25) top all are provided with set nut (28) to the equal fixedly connected with connector (29) in both sides of fixed case (25), the axle center department of connector (29) is connected with translation board (3) rotation through the moving part.
4. A single-reaction tripod with translation function according to claim 1, wherein: one side of the cradle head (1) is provided with a transverse handle (17), the other side of the cradle head (1) is provided with a longitudinal handle (19), and the cradle head (1) is provided with a knob (18).
CN201710632066.6A 2017-07-28 2017-07-28 Single-reverse tripod with translation function Active CN107461575B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710632066.6A CN107461575B (en) 2017-07-28 2017-07-28 Single-reverse tripod with translation function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710632066.6A CN107461575B (en) 2017-07-28 2017-07-28 Single-reverse tripod with translation function

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CN107461575A CN107461575A (en) 2017-12-12
CN107461575B true CN107461575B (en) 2019-12-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111722409B (en) * 2020-07-14 2022-06-14 东南大学 Auxiliary device for stable connection of super-long focal length lens and industrial camera
CN114285968A (en) * 2021-12-09 2022-04-05 北京卫星环境工程研究所 Rotation type is turned up and is mended ground spacecraft under-deck panorama image acquisition device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202691507U (en) * 2012-08-09 2013-01-23 重庆金母带科技有限公司 Synchronous belt electric slide rail device used for video camera mobile shooting
CN102809032B (en) * 2012-08-20 2014-05-14 重庆金母带科技有限公司 Electric rotating slideway for movable camera shooting
CN202854472U (en) * 2012-10-31 2013-04-03 江敏 Automatic photographing sliding rail device used in stereoscopic photography
US8967889B2 (en) * 2013-04-26 2015-03-03 Kessler Crane, Inc. Panning slider
CN203686506U (en) * 2014-01-20 2014-07-02 上海诚明融鑫科技有限公司 Panoramic pan-tilt shooting device
CN104991404B (en) * 2015-07-27 2018-01-19 张春天 Picture camera lens big or middle moves axle and waves technology switching device
CN204807891U (en) * 2015-07-27 2015-11-25 张春天 Camera camera lens every single move rotation regulation device

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Effective date of registration: 20191106

Address after: 317600 Yangfan Road, Yuhuan City, Taizhou City, Zhejiang Province (South of Marine Economic Transition and Upgrading Demonstration Zone)

Applicant after: Zhejiang Xingdao Machinery Co., Ltd.

Address before: 230000 Private Science Park, Hefei Economic and Technological Development Zone, Anhui Province

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Effective date of registration: 20211216

Address after: 276000 Luozhuang Fuzhuang office, Linyi City, Shandong Province, 500m east of the intersection of Tongda South Road and Zhenzhong Road

Patentee after: Linyi Luokai Construction Engineering Co.,Ltd.

Address before: 317600 Yangfan Road, Yuhuan City, Taizhou City, Zhejiang Province (South of Marine Economic Transition and Upgrading Demonstration Zone)

Patentee before: Zhejiang Xingdao Machinery Co.,Ltd.