CN109826919A - A kind of screw nut driven mechanism, self-adjusting telescoping mechanism and photography mechanical arm - Google Patents
A kind of screw nut driven mechanism, self-adjusting telescoping mechanism and photography mechanical arm Download PDFInfo
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- CN109826919A CN109826919A CN201910237911.9A CN201910237911A CN109826919A CN 109826919 A CN109826919 A CN 109826919A CN 201910237911 A CN201910237911 A CN 201910237911A CN 109826919 A CN109826919 A CN 109826919A
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Abstract
It further include the feed screw nut coating member for being sleeved on lead screw and coating feed screw nut installation end the invention discloses a kind of screw nut driven mechanism, including lead screw and feed screw nut；The feed screw nut coating member is provided with the fixed part for being fixedly connected with driven member；The installation end of the feed screw nut can move inside feed screw nut coating member along non axial, by using the mode for coating but being not fixed feed screw nut, require low, stable drive to installation accuracy；The invention also discloses the self-adjusting telescoping mechanisms for containing above-mentioned screw nut driven mechanism, and the self-adjusting telescoping mechanism is provided with double pulleies unit, and quickly, significantly flexible is able to achieve in the case where a small amount of self weight, small volume increasing；The invention also discloses the photography mechanical arm for containing above-mentioned self-adjusting telescoping mechanism, occupies little space, is strong from heavy and light, stable drive and flexible ability, being suitable for popularization and application.
Description
Technical field
The present invention relates to photography mechanical arm fields, more particularly to a kind of screw nut driven mechanism, self-adjusting telescopic machine
Structure and photography mechanical arm.
Background technique
Film industry develops along with state-of-the-art technology always.The movement control technology of video camera is digital effects key skill
One of art.The large space free movement of video camera is more in line with the field demand of movies-making.
Current existing camera motion control system is the General Lift.s Mk Genu Flex in the U.S., Britain
MRMC MILO, BOLT and China Austria regard good (OTHKA).In camera motion control system, video camera can reach
The maximum height arrived, it is also related with the flexible ability of pitch arm in addition to having outside the Pass with luffing mechanism.General Lift.s Mk
Genu Flex is bulky, and for fixed pitch arm, pitch arm does not have Telescopic, poor to the applicability in shooting space.Milo
Telescoping mechanism have two-stage, the first order is pedestal, no locomotivity, the second level be rectangle expansion bracket, the second level is driven by lead screw
Movement.This is simple and reliable for structure, but distance of stretch out and draw back is less than 1.5m, and distance of stretch out and draw back is shorter；It is rigid that structure can be improved in big section frame body
Property, but occupied space is larger；In addition, the structure is at the uniform velocity and during acceleration and deceleration, camera motion is steady, but its lead screw
Transmission mechanism installation accuracy requires height, and price is very expensive.BOLT and OTHKA is industrial machinery arm type robot, using rotation
Mechanism, non-telescope arm, the type are high-speed type sports type, and video camera operational height is very low.
It can be seen that above-mentioned existing photography mechanical arm is in structure and use, it is clear that there are still there is inconvenient and defect, and
It needs to be further improved.How to found a kind of lead screw transmission mechanism installation accuracy and requires that low, telescoping mechanism is small in size, stretches
Contracting ability is strong and moves smoothly photography mechanical arm, becomes the target that current industry needs to improve.
Summary of the invention
The invention solves first technical problem be to provide a kind of screw nut driven mechanism, make it in transmission process
In, steady transmission that is low and being able to achieve no Caton is required to installation accuracy.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of screw nut driven mechanism, including lead screw and feed screw nut further include being sleeved on lead screw and coating lead screw
The feed screw nut coating member of nut installation end；The feed screw nut coating member is provided with to be consolidated for what is be fixedly connected with driven member
Determine portion；The installation end of the feed screw nut can move inside feed screw nut coating member along non axial.
It is further improved as the present invention, the feed screw nut coating member includes fixed plate and detachably connects with fixed plate
The coating cavity in rectangle connect；Lead screw perforation is provided in the fixed plate, the aperture of the lead screw perforation is greater than outside lead screw
Diameter；Feed screw nut perforation is provided on the coating cavity, the aperture of the feed screw nut perforation is greater than the outer diameter of feed screw nut；
The installation end of the feed screw nut is connected in coating cavity, and the two can be relative motion in left-right direction；The lead screw is
Ball-screw, the feed screw nut are ball-screw nut.
The invention solves second technical problem be to provide a kind of self-adjusting telescoping mechanism, make its increase on a small quantity from
Quick, contracting strength significantly is able to achieve in the case where weight, small volume.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of self-adjusting telescoping mechanism further includes containing above-mentioned silk including the multi-stage expansion mechanism that opposite can be slidably connected
The feed screw nut driving mechanism of thick stick nut transmission mechanism；Multi-stage expansion mechanism is driven by the feed screw nut driving mechanism.
It is further improved as the present invention, the self-adjusting telescoping mechanism is three-level telescoping mechanism, including is successively slided
First order frame structure, second level frame structure, third level frame structure and the shackle line group of connection；The transmission steel wire
Rope group includes preceding wirerope group and rear wirerope group；The second level frame structure is by the silk that is mounted in first order frame structure
The driving of thick stick nut driving mechanism；The second level frame structure front and rear portions are respectively arranged with sister block combination, second before the second level
Sister block combines after grade；The front end of the first order frame structure is combined by preceding wirerope group around sister block before the second level,
It is fixedly connected with third level frame structure；The front end of the first order frame structure is by rear wirerope group, around behind the second level
Sister block combination, is fixedly connected with third level frame structure rear portion.
Further, the upper surface of the first order frame structure is provided with first order linear guide group, the second level
The lower surface of frame structure is provided with the sliding block with the cooperation of first order linear guide group；The upper surface of the second level frame structure
It is provided with second level linear guide group, the lower surface of the third level frame structure is provided with to be cooperated with second level linear guide group
Sliding block.
Further, the first order frame structure includes wirerope fixing seat group, before first order main substrate, the first order
Wirerope fixing seat group after level-one；Wirerope fixing seat group is before through bolt and first order main substrate front end before the first order
Portion is connected；Wirerope fixing seat group is connected by bolt with first order main substrate front end rear portion after the first order；The third level frame
Frame structure includes fixing seat group after fixing seat group, third level wirerope before third level main substrate, third level wirerope；The third
Fixing seat group is fixed by the bracket is connected to third level main substrate side respectively after fixing seat group, third level wirerope before grade wirerope
The middle and back and rear end in face；The fixing seat group is that threaded connector is connect with the connection relationship of wirerope group.
Further, the first order frame structure includes first order main substrate, and the feed screw nut driving mechanism includes
Driving motor, motor mount, shaft coupling, motor mount bracket, lead screw support base and the lead-screw drive mechanism；The drive
Dynamic motor is connect with motor mount one end, and lead screw support base is connect with the motor mount other end；Lead screw is positioned at lead screw branch
Seat is supportted, is connect by shaft coupling with driving motor, motor mount is connected to first order main substrate by motor mount bracket
Upper surface.
Further, sister block combination is identical with sister block composite structure behind the second level before the second level, including double cunnings
Wheel support, first pulley, second pulley, sister block axis, sleeve, locking nut and binding nut；The sister block axis passes through double
Pulley bracket, one end are connect by screw thread with binding nut, are fixed on sister block axis on sister block bracket；Described first is sliding
Wheel, sleeve, second pulley are mounted on sister block axis in order with one heart；The first pulley end is located in the shaft shoulder of sister block axis
On, the second pulley end is fixed with the locking nut.
Further, the first pulley, second pulley structure are identical, including pulley cover board, ball bearing, pulley bearings
Seat；The pulley cover board is connect by screw thread with pulley bearings seat, and the ball bearing is pressed in pulley bearings seat.
The invention solves third technical problem be to provide a kind of photography mechanical arm, can increase on a small quantity from
Under conditions of weight, energy even running, and the variation length and maximum length of pitch arm can be greatly improved, obtain video camera more
Add stable, free maximum operational height.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of photography mechanical arm, including pitch arm, the pitch arm include above-mentioned self-adjusting telescoping mechanism.
By using above-mentioned technical proposal, the present invention has at least the following advantages:
1, the present invention by cladding but is not fixed feed screw nut, so that the installation accuracy of lead screw and first order linear guide group
It does not need very high, transmission agency can be smoothly completed, whole process is without Caton and high-drag；Screw nut driven structure has automatically
Adjust function.
2, compared with Milo type telescopic arm structure, in the case that transmission mechanism increases seldom, that is, the second level is merely added
Linear guide group and front and back pulley blocks, the distance of stretch out and draw back for just improving telescopic arm is 2 times originally.For photography machine people,
Only increase seldom weight, increases substantially the working space of photography machine people.Meanwhile the rotary shaft under cooperation telescopic arm, it can
Realize the faster movement effects of video camera.
3, the pulley blocks of double hitch structures avoid in deviation so that the output of double guide rail kinematic system driving forces more balances
Torque caused by single driving force of heart line, the transmission of second level frame structure and third level frame structure is more steady, to make
It obtains more stable when the movement of end camera lens.
4, self-adjusting telescoping mechanism of the invention is driven using clad type feed screw nut, by running block, realizes level-one
Three-level is driven indirectly by second level；It is designed simultaneously by bilateral balance power drive, so that stretching motion is more steady；Using its
Mechanical arm of photographing greatly improves the variation length and maximum length (essence of pitch arm under conditions of increasing a small amount of self weight
It is using new design lightweight and densification pitching arm mechanism), so that video camera is obtained more free maximum operational height.
Detailed description of the invention
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is the partial structure diagram of screw nut driven mechanism in the embodiment of the present invention；
Fig. 2 is the partial structure diagram (fixed plate of dismantling) of lead-screw drive mechanism in the embodiment of the present invention；
Fig. 3 is the overall structure diagram of level-one frame structure；
Fig. 4 is the partial enlarged view of feed screw nut drive part；
Fig. 5 is the front end partial enlarged view of level-one frame structure；
Fig. 6 is the overall structure diagram of second level frame structure；
Fig. 7 is the partial enlarged view of second level frame structure lower end Slipper；
Fig. 8 is the partial enlarged view of three-level frame structure rear end；
Fig. 9 is the shackle line group structural schematic diagram of three-level telescoping mechanism；
Figure 10 is the overall structure diagram of three-level telescoping mechanism；
Figure 11 is the structural schematic diagram of sister block combination before the second level；
Figure 12 is the structural schematic diagram of pulley.
Specific embodiment
As shown in Figure 1, 2, screw nut driven mechanism includes lead screw 106 and feed screw nut 107, further includes being sleeved on lead screw
On 106 and coat 107 installation end of feed screw nut feed screw nut coating member.Wherein the installation end of feed screw nut refers to normal lead screw
There is the plate structure of extension in the side of nut, belongs to the interconnecting piece being directly fixedly connected with driven member.
Above-mentioned feed screw nut coating member includes fixed plate 109 and the coating cavity 108 in rectangle；Feed screw nut 107 passes through
It being threaded on lead screw 106, the installation end of feed screw nut is connected in coating cavity 108, specifically, the installation of feed screw nut
End is preferably in rectangular configuration, and the upper and lower side of installation end is bonded with side upper and lower in coating cavity 108 respectively；Installation end it is left and right
There are mobile space in two sides between arranged on left and right sides in coating cavity 108 respectively；Fixed plate 109 and coating cavity 108 pass through bolt
It connects, screw hole is provided in fixed plate 109, for being fixedly connected with driven member.Lead screw perforation is provided in fixed plate 109,
The aperture of lead screw perforation is greater than 106 outer diameter of lead screw；Feed screw nut perforation is provided on coating cavity, the feed screw nut perforation
Aperture is greater than the outer diameter of feed screw nut；By above-mentioned setting, forms cladding but be not fixed feed screw nut, feed screw nut has along non-
The space (move but do not rotate) of axial movement, therefore, has self-adjusting function, when being used for telescoping mechanism, so that lead screw
It is not needed with the installation accuracy of the linear guide group in first order frame structure very high, transmission agency can be smoothly completed, it is whole
Without Caton and high-drag.
Preferably, above-mentioned lead screw is ball-screw, and feed screw nut is ball-screw nut.
Present embodiments provide a kind of self-adjusting telescoping mechanism using above-mentioned screw nut driven mechanism.Including the first order
Frame structure, second level frame structure, third level frame structure and shackle line group.
Cooperate shown in Fig. 3,4,5, first order frame structure includes driving motor 101, motor mount 102, shaft coupling
103, motor mount bracket 104, lead screw support base 105, screw nut driven mechanism (lead screw 106, feed screw nut 107, cladding
Cavity 108, fixed plate 109), first order main substrate 110, first order linear guide group 111, wirerope fixing seat group before the first order
112, wirerope fixing seat group 113 after the first order.
Driving motor 101 is connect by bolt with motor mount 102, and lead screw support base 105 is pacified by bolt and motor
Fill the connection of 102 other end of seat.Lead screw 106 is positioned at lead screw support base 105, is connect by shaft coupling 103 with driving motor 101.
Motor mount bracket 104 is connected by bolt with the bottom of motor mount 102, meanwhile, motor mount bracket 104 is logical
Bolt is crossed to connect with 110 upper surface of first order main substrate.Feed screw nut 107 interacts to produce by screw thread with lead screw 106
Raw relative motion.Coating cavity 108 is connect by bolt with fixed plate 109.The installation end of feed screw nut is coated on coating cavity
In 108.First order linear guide group 111 is mounted on the upper surface of first order main substrate 110.Wirerope fixing seat group before the first order
112 are being connected by bolt with 110 front end front of first order main substrate.Pass through bolt for 113 groups of wirerope fixing seat after the first order
It is connected with 110 front end rear portion of first order main substrate.
Cooperating Fig. 6, shown in 7, second level frame structure includes second level main substrate 201, second level main transmission plate 202, the
Second level main transmission plate bracing frame group 203, sister block combination 204 before the second level, sister block combination 205 behind the second level, the second level is straight
Line guide rail group 206, second level straight-line guide rail slide block group 207.
Second level main transmission plate 202 is connect by bolt with second level main transmission plate bracing frame group 203.The main biography in the second level
Movable plate 202 determines relative position by positioning surface and second level main substrate 201.Second level main transmission plate bracing frame group 203 passes through
Bolt is connected with the rear end upper surface of second level main substrate 201.Sister block combination 204 passes through bolt and second level master before the second level
The connection of 201 front of substrate.Sister block combination 205 is bolted with 201 rear portion of second level main substrate behind the second level.The second level
Linear guide group 206 is connect by bolt with the upper surface of second level main substrate 201.Second level straight-line guide rail slide block group 207 is logical
It crosses bolt to connect with 201 lower surface of second level main substrate, while being produced by ball and the interaction of first order linear guide group 111
Raw relative motion.
Cooperate shown in Fig. 8, third level frame structure includes third level main substrate 301, third level straight-line guide rail slide block group
302, solid before third level wirerope fixing seat fore-stock 303, third level wirerope fixing seat after-poppet 304, third level wirerope
Fixing seat group 306, aluminum profile laterally secure part group 307, aluminum section bar frame 308, aluminium profiles after reservation group 305, third level wirerope
Material end fixed plate 309, the fixed plate bracing frame group 310 in aluminum profile end.
Third level straight-line guide rail slide block group 302 is connect by bolt with 301 lower surface of third level main substrate, while passing through rolling
Pearl and the interaction of second level linear guide group 206 generate relative motion.Third level wirerope fixing seat fore-stock 303 passes through spiral shell
Bolt is connect with third level main substrate 301.After third level wirerope fixing seat after-poppet 304 is by bolt and third level substrate 301
End connection.Fixing seat group 305 is connected by bolt and 303 upper surface of third level wirerope fixing seat fore-stock before third level wirerope
It connects.Fixing seat group 306 is connect by bolt with 304 upper surface of third level wirerope fixing seat after-poppet after third level wirerope.
Aluminum profile laterallys secure part group 307 and is connected respectively with 308 side of aluminum section bar frame and 301 side of third level main substrate by bolt
It connects.Aluminum profile end fixed plate 309 is connect by bolt with aluminum profile rear end.The fixed plate bracing frame group 310 in aluminum profile end is logical
Bolt is crossed to connect with aluminum profile end fixed plate 309 and 301 upper surface of third level main substrate respectively.
Cooperate Fig. 9, shown in 10, shackle line group includes preceding wirerope group 401 and rear wirerope group 402.Preceding wirerope
The both ends of group 401 are connected through a screw thread head and fix respectively with before wirerope fixing seat group 112 before the first order and third level wirerope
Seat group 305 is connected.Preceding wirerope group 401 is connected across before the second level on the pulley of sister block combination 204.Wirerope group 402 afterwards
Both ends be connected through a screw thread head respectively with fixing seat group after wirerope fixing seat group 113 after the first order and third level wirerope
306 are connected.Wirerope group 402 is connected across behind the second level on the pulley of sister block combination 205 afterwards.
Cooperating shown in Figure 11, it is identical to combine 205 structures with sister block behind the second level for sister block combination 204 before the second level, with
It is illustrated for sister block combination 204 before the second level, including sister block bracket 2041, pulley 2042 (2), sister block axis
2043, sleeve 2044, locking nut 2045 and binding nut 2046.
Sister block axis 2043 passes through the mounting hole of sister block bracket 2041, and one end is connected by screw thread and binding nut 2046
It connects, is fixed on sister block axis 2043 on sister block bracket 2041.Pulley 1, sleeve 2044, pulley 2 are mounted in order with one heart
2043 on sister block axis, one end of pulley 1 is located on the shaft shoulder of sister block axis, and one end of pulley 2 is solid with locking nut 2045
It is fixed.
Cooperate shown in Figure 12, pulley 2042 includes pulley cover board 20421, ball bearing 20422, pulley bearings seat 20423.
Ball bearing 20422 is mounted in pulley bearings seat 20423.Pulley cover board 20421 is connected by screw thread and pulley bearings seat 20423
It connects, ball bearing 20422 is pressed in pulley bearings seat 20423.
The connection relationship of above-mentioned entire self-adjusting telescoping mechanism are as follows: first order frame structure passes through first order linear guide group
111 connect with the second level straight-line guide rail slide block group 207 of second level frame structure, while passing through feed screw nut coating member and 202
Connection.Second level frame structure is sliding by the third level linear guide of second level linear guide group 206 and third level frame structure
Block group 302 connects.Counter weight construction has also been bolted to connection in the rear end of first order frame structure.First order frame structure
Preceding wirerope fixing seat group 112 by the preceding wirerope group 401 of shackle line group, combined by sister block before the second level
204, it is connect with fixing seat group 305 before the third level wirerope of third level frame structure.Meanwhile the rear steel of first order frame structure
Cord fixing seat group 113 is by the rear wirerope group 402 of shackle line group, the sister block combination 205 behind the second level, with the
Fixing seat group 306 connects after the third level wirerope of three-level frame structure.
When the overhanging work of telescoping mechanism, driving motor 101 drives lead screw 106 to rotate by shaft coupling 103, on lead screw 106
Feed screw nut 107 and feed screw nut coating member be moved axially forwards along lead screw 106, driving with feed screw nut coating member is fixed connects
The second level frame structure connect along the first frame structure 111 forward slip of first order linear guide group, due to second level frame
The Forward of structure, has driven the Forward of preceding wirerope group 401 and the connecting pin of third level frame structure, and then drives third level frame
The Forward of frame structure；The first order frame structure of telescoping mechanism is realized while directly driving second level frame structure, indirectly
It drives third level frame structure to travel forward, stretches out speed fastly and the small volume of telescoping mechanism.
Similarly, when telescoping mechanism retracts work, screw nut driven mechanism in first order frame structure drives the
Second level frame structure is slided backward along the first order linear guide group 111 of the first frame structure, due to second level frame structure
It moves back, has driven moving back for rear wirerope group 402 and the connecting pin of third level frame structure, and then drive third level frame structure
It moves back.
In conclusion screw nut driven mechanism of the invention has using cladding but by the way of being not fixed feed screw nut
Self-adjusting function requires installation accuracy low；Self-adjusting telescoping mechanism is driven using clad type feed screw nut, passes through movable pulley
Group realizes that level-one drives three-level by second level indirectly；It is designed simultaneously by bilateral balance power drive, so that stretching motion is more flat
Surely；Using its photography mechanical arm, under conditions of increasing a small amount of self weight, the variation length and most of pitch arm is greatly improved
Long length (being substantially using new design lightweight and densification pitching arm mechanism), so that video camera is obtained more free maximum can
Up to height, it is suitable for popularization and application.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair
In bright protection scope.
Claims (10)
1. a kind of screw nut driven mechanism, including lead screw and feed screw nut, which is characterized in that further include be sleeved on lead screw and
Coat the feed screw nut coating member of feed screw nut installation end；
The feed screw nut coating member is provided with the fixed part for being fixedly connected with driven member；
The installation end of the feed screw nut can move inside feed screw nut coating member along non axial.
2. screw nut driven mechanism according to claim 1, which is characterized in that the feed screw nut coating member includes solid
Fixed board and the coating cavity in rectangle being detachably connected with fixed plate；
Lead screw perforation is provided in the fixed plate, the aperture of the lead screw perforation is greater than lead screw outer diameter；On the coating cavity
It is provided with feed screw nut perforation, the aperture of the feed screw nut perforation is greater than the outer diameter of feed screw nut；The peace of the feed screw nut
Dress end is connected in coating cavity, and the two can relative motion in left-right direction；The lead screw is ball-screw, the lead screw spiral shell
Mother is ball-screw nut.
3. a kind of self-adjusting telescoping mechanism, including the multi-stage expansion mechanism that opposite can be slidably connected, which is characterized in that further include containing
The feed screw nut driving mechanism of screw nut driven mechanism described in having the right to require 1 or 2；Multi-stage expansion mechanism passes through the silk
The driving of thick stick nut driving mechanism.
4. self-adjusting telescoping mechanism according to claim 3, which is characterized in that be three-level telescoping mechanism, including successively slide
First order frame structure, second level frame structure, third level frame structure and the shackle line group of dynamic connection；The transmission steel
Cord group includes preceding wirerope group and rear wirerope group；
The second level frame structure is driven by the feed screw nut driving mechanism being mounted in first order frame structure；
The second level frame structure front and rear portions are respectively arranged with before the second level that sister block combines behind sister block combination, the second level；
It is combined by preceding wirerope group around sister block before the second level, with the third level frame front end of the first order frame structure
Frame structure is fixedly connected；
It is combined by rear wirerope group around sister block behind the second level, with the third level frame front end of the first order frame structure
Frame structure rear portion is fixedly connected.
5. self-adjusting telescoping mechanism according to claim 4, which is characterized in that the upper surface of the first order frame structure
It is provided with first order linear guide group, the lower surface of the second level frame structure is provided with to be cooperated with first order linear guide group
Sliding block；The upper surface of the second level frame structure is provided with second level linear guide group, the third level frame structure
Lower surface is provided with the sliding block with the cooperation of second level linear guide group.
6. self-adjusting telescoping mechanism according to claim 4, which is characterized in that the first order frame structure includes first
Wirerope fixing seat group after wirerope fixing seat group, the first order before grade main substrate, the first order；
Wirerope fixing seat group is being connected by bolt with first order main substrate front end front before the first order；Steel after the first order
Cord fixing seat group is connected by bolt with first order main substrate front end rear portion；
The third level frame structure includes before third level main substrate, third level wirerope after fixing seat group, third level wirerope
Fixing seat group；
Fixing seat group is fixed by the bracket is connected to respectively after fixing seat group, third level wirerope before the third level wirerope
The middle and back and rear end of three-level main substrate side；
The fixing seat group is that threaded connector is connect with the connection relationship of wirerope group.
7. self-adjusting telescoping mechanism according to claim 4, which is characterized in that the first order frame structure includes first
Grade main substrate, the feed screw nut driving mechanism includes driving motor, motor mount, shaft coupling, motor mount bracket, silk
Thick stick support base and the lead-screw drive mechanism；
The driving motor is connect with motor mount one end, and lead screw support base is connect with the motor mount other end；Lead screw is fixed
It positioned at lead screw support base, is connect by shaft coupling with driving motor, motor mount is connected to by motor mount bracket
Level-one main substrate upper surface.
8. self-adjusting telescoping mechanism according to claim 4, which is characterized in that sister block combination and the before the second level
Sister block composite structure is identical after second level, including sister block bracket, first pulley, second pulley, sister block axis, sleeve, locking
Nut and binding nut；
The sister block axis passes through sister block bracket, and one end is connect by screw thread with binding nut, is fixed on sister block axis double
On pulley bracket；The first pulley, sleeve, second pulley are mounted on sister block axis in order with one heart；The first pulley
End is located on the shaft shoulder of sister block axis, and the second pulley end is fixed with the locking nut.
9. self-adjusting telescoping mechanism according to claim 8, which is characterized in that the first pulley, second pulley structure
It is identical, including pulley cover board, ball bearing, pulley bearings seat；The pulley cover board is connect by screw thread with pulley bearings seat, will
The ball bearing is pressed in pulley bearings seat.
10. a kind of photography mechanical arm, which is characterized in that including pitch arm, the pitch arm includes any one of claim 1-9 institute
The self-adjusting telescoping mechanism stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237911.9A CN109826919B (en) | 2019-03-27 | 2019-03-27 | Screw nut transmission mechanism, self-adjusting telescopic mechanism and photographic mechanical arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237911.9A CN109826919B (en) | 2019-03-27 | 2019-03-27 | Screw nut transmission mechanism, self-adjusting telescopic mechanism and photographic mechanical arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109826919A true CN109826919A (en) | 2019-05-31 |
| CN109826919B CN109826919B (en) | 2020-08-04 |
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| CN201910237911.9A Expired - Fee Related CN109826919B (en) | 2019-03-27 | 2019-03-27 | Screw nut transmission mechanism, self-adjusting telescopic mechanism and photographic mechanical arm |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202241311U (en) * | 2011-10-20 | 2012-05-30 | 宁波力匠机械制造有限公司 | 3-level telescopic motion arm |
| CN102619945A (en) * | 2012-04-17 | 2012-08-01 | 中国航天科技集团公司第五研究院第五一八研究所 | Multi-stage hollow screw synchronous drive telescopic manipulator |
| CN204592202U (en) * | 2014-12-30 | 2015-08-26 | 中核武汉核电运行技术股份有限公司 | A kind of Multi-stage precise transmission extending means |
| CN205678082U (en) * | 2015-11-24 | 2016-11-09 | 深圳市奥迈兴自动化设备有限公司 | Leading screw travel mechanism |
| CN207514175U (en) * | 2017-09-20 | 2018-06-19 | 常州海特赐仁传动科技有限公司 | A kind of industrial robot straight line module |
-
2019
- 2019-03-27 CN CN201910237911.9A patent/CN109826919B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202241311U (en) * | 2011-10-20 | 2012-05-30 | 宁波力匠机械制造有限公司 | 3-level telescopic motion arm |
| CN102619945A (en) * | 2012-04-17 | 2012-08-01 | 中国航天科技集团公司第五研究院第五一八研究所 | Multi-stage hollow screw synchronous drive telescopic manipulator |
| CN204592202U (en) * | 2014-12-30 | 2015-08-26 | 中核武汉核电运行技术股份有限公司 | A kind of Multi-stage precise transmission extending means |
| CN205678082U (en) * | 2015-11-24 | 2016-11-09 | 深圳市奥迈兴自动化设备有限公司 | Leading screw travel mechanism |
| CN207514175U (en) * | 2017-09-20 | 2018-06-19 | 常州海特赐仁传动科技有限公司 | A kind of industrial robot straight line module |
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| CN109826919B (en) | 2020-08-04 |
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