CN105953048A - Double-screw device with hollow screw rods - Google Patents
Double-screw device with hollow screw rods Download PDFInfo
- Publication number
- CN105953048A CN105953048A CN201610450867.6A CN201610450867A CN105953048A CN 105953048 A CN105953048 A CN 105953048A CN 201610450867 A CN201610450867 A CN 201610450867A CN 105953048 A CN105953048 A CN 105953048A
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- CN
- China
- Prior art keywords
- screw
- screw mandrel
- bull
- gear
- guide rod
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
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- 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
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
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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
- F16M2200/00—Details of stands or supports
- F16M2200/08—Foot or support base
Abstract
The invention discloses a double-screw device with hollow screw rods. The double-screw device is small in retracting size and long in stretching distance and includes a lower cylinder body located at the lowermost portion. A guide rod and a multi-head lead screw are installed in the lower cylinder body. A ball lead screw is arranged at the upper portion of the multi-head lead screw. The upper portion of the guide rod is arranged in the ball lead screw. The guide rod slides vertically in the multi-head lead screw and the ball lead screw. The ball lead screw moves vertically in the multi-head lead screw. By means of the double-screw device with the hollow screw rods, the structure with the positive screw rod and the negative screw rod is adopted, according to the two screw rods, the lead screws are used in a nested manner, occupied space is reduced when the two lead screws are in a retracted state, the structure is reasonable, operation is convenient, and the use range is wide.
Description
Technical field
The present invention relates to telescope support field, particularly relate to a kind of cored screw bar twice-coiled devices.
Background technology
In order to allow photographic instrument, detection instrument in detection, detecting tool, photography, the stage performance
Shooting, the auxiliary generally requiring telescope support easy to detect, the most traditional telescope support is all triangle
Support supports three joint antenna pull bars, all uses wire rope pulley group to draw high mechanism, or single
Joint spiral climbing structure, this traditional telescope support structure can be restricted by using environment, is suitable for
Scope is not wide, cannot accomplish to shoot smoothly or detect, it is impossible to meet work in indivedual narrow spaces
Need.
For the telescoping mechanism of telescope support, similar telescoping mechanism in the market is all
Can only be stretched a joint；Even 1.3 meters long cylinders, are 1.3 meters during retraction, and in the market
Like product can only reach about 2 meters, and its length stretched out is too short, in indivedual small spaces and transport
During cannot all meet client's needs.
Summary of the invention
In order to solve above-mentioned technical problem, after the invention provides a kind of retraction, volume is little, outreach length
Cored screw bar twice-coiled devices.
The technical problem to be solved is achieved through the following technical solutions:
A kind of cored screw bar twice-coiled devices of the present invention, including being placed in the lower shell of bottom, described under
Cylinder is hollow tubular structure, is provided with guide rod and bull screw mandrel in described lower shell, and described bull screw mandrel is
Hollow-core construction, the outer surface of described bull screw mandrel is provided with screw thread, and described bull screw rod bushing is located at the outer ring of guide rod,
The top of described bull screw mandrel is provided with ball screw, and described ball screw is hollow-core construction, described ball screw
Outer surface be provided with screw thread, described ball screw is set in bull screw mandrel, and the top of described guide rod is placed in rolling
In ballscrew, described guide rod slides up and down in bull screw mandrel and ball screw, and described ball screw is bull
Upper and lower displacement in screw mandrel；
The upper end of described lower shell is provided with gear assembly, and described gear assembly controls bull screw mandrel and ball wire
The upper and lower displacement of bar, described gear assembly is installed on the outer ring of lower shell；
The upper end of described bull screw mandrel is provided with connection seat, and described connection seat one end is installed on outside bull screw mandrel
Circle, the other end are installed on the outer ring of ball screw, the upper and lower displacement in connection seat of described ball screw；
The upper end of described ball screw is provided with mounting seat, and described upper mounting seat needs erection for installing
Instrument.
Further, described gear assembly includes that gearbox-case, gear-box mounting seat and bull screw mandrel couple
Nut, described gear-box mounting seat is arranged at the upper end of lower shell, and described gearbox-case is fixed on institute
Stating in gear-box mounting seat, described bull screw mandrel coupling nut is arranged at the outer ring of bull screw mandrel, described bull
The inner ring of screw mandrel coupling nut is provided with screw thread, the screw thread of the inner ring of described bull screw mandrel coupling nut and bull
The screw-threaded engagement of the outer surface of screw mandrel；
Being provided with the first bevel gear and the second bevel gear in described gearbox-case, described first bevel gear includes
Gear end and round end, described gear end is placed in inside gearbox-case, and described round end is placed in outside gear-box
Outside shell, described round end being provided with rotary handle, the gear end of described first bevel gear is placed in gear-box
The top of mounting seat, is provided with clutch shaft bearing between gear end and the gear-box mounting seat of described first bevel gear,
Described clutch shaft bearing couples with bull screw rod transmission, and described second bevel gear is installed on the gear of the first bevel gear
The top of end, the gear end of described second bevel gear and the first bevel gear engages, described second bevel gear upper
End is provided with the second bearing, and the gear internal diameter axis hole of described second bevel gear couples section shape with multiple lead screw
Shape is the fabricated structure of seamed edge and circular arc, or offers the structure of keyway on circular arc, on described second bevel gear
Coupling has many head nuts, described many head nuts to engage with bull screw mandrel, and the lower section of described second bevel gear is arranged
Having sleeve, described sleeve set is in the outer ring of bull screw mandrel, and described first bevel gear passes through coupling nut and tooth
The assembling of roller box shell is fixing, is provided with back-up ring between described coupling nut and rotary handle.
Further, described connection seat includes coupling sleeve, guide rod throwout sleeve and locking nut, described ball
Feed screw nut is actively coupled by locking nut with bull screw mandrel, and described locking nut is fixedly installed in many captaculas
The upper end of bar, described guide rod throwout sleeve is placed in inside ball screw, and described guide rod throwout sleeve is set in leads
Bar outer ring, described ball screw lower end is seated on guide rod throwout sleeve, and described coupling sleeve is set in bull screw mandrel
Outside, described coupling sleeve lower end is provided with semi-ring, and described semi-ring is flush-mounted in the outer ring of bull screw mandrel, and described half
Ring is fixed by semi-ring locking nut, is provided with ball screw nut, described ball screw in described coupling sleeve
Nut sleeve is loaded on the upper surface of the outer ring of ball screw, the lower surface of described ball screw nut and bull screw mandrel
Contacting, described locking nut is installed on the upper end of coupling sleeve, and described locking nut is provided with Anti-extrusion
Spiral shell pad, described Anti-extrusion spiral shell pad is placed in the end of guide rod.
Further, described guide rod includes that floating torque arm, one end of described floating torque arm are provided with floating
Torsion seat, the other end are provided with confinement block, and described floating torsion seating is in lower shell；
The radial dimension in the cross section of described floating torsion seat is more than the radial dimension in the cross section of floating torque arm, institute
The radial dimension in the cross section stating confinement block is more than or equal to the radial ruler of the circumscribed circle in the cross section of floating torque arm
Very little.
Further, the fabricated structure that cross sectional shape is circular arc and seamed edge of described bull screw mandrel, or circular arc
On offer the structure of keyway.
Further, described gear assembly provides power or motor to provide power by manpower.
A kind of beneficial effect of the cored screw bar twice-coiled devices of the present invention:
The present invention uses positive and negative two joint screw rod structures, two joint screw rods, i.e. screw mandrel nesting uses, two joint silks
Bar decreases in a contracted state and takes up room, rational in infrastructure, easy to operate, and range is wide.
A kind of cored screw bar twice-coiled devices of the present invention can stretch out two joints, also under identical length
That is extension elongation has more more than by about one time than like product extension elongation in the market, Er Qie
Can self-locking, the most easily exact localization operation during random length；Even 1.3 meters long cylinders, retract
Shi Junwei 1.3 meters, and like product can only reach about 2 meters in the market, the liter of the present invention
Descending mechanism stretches out up to about 3 meters, the far super like product on the market of extension elongation, and its self-locking merit
Can realize the locking of random length, allow it meet the demand of field of employment.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention
And after coordinating accompanying drawing to describe in detail such as.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of cored screw bar twice-coiled devices of the present invention；
Fig. 2 is the structural representation of the gear assembly of a kind of cored screw bar twice-coiled devices shown in Fig. 1；
Fig. 3 is the structural representation of the connection seat of a kind of cored screw bar twice-coiled devices shown in Fig. 1；
Fig. 4 is the draw bail signal of the first bevel gear of a kind of cored screw bar twice-coiled devices shown in Fig. 1
Figure；
Fig. 5 is the structural representation of the guide rod of a kind of cored screw bar twice-coiled devices shown in Fig. 1；
Fig. 6 is the principle schematic of a kind of cored screw bar twice-coiled devices shown in Fig. 1；
Fig. 7 is the general assembly structural representation that the guide rod of a kind of cored screw bar twice-coiled devices shown in Fig. 1 is external
Figure；
Fig. 8 is the gear internal diameter axis hole of the second bevel gear of a kind of cored screw bar twice-coiled devices shown in Fig. 1
The first structural representation；
Fig. 9 is the gear internal diameter axis hole of the second bevel gear of a kind of cored screw bar twice-coiled devices shown in Fig. 1
The first couple sectional schematic diagram；
Figure 10 is the gear bore axes of the second bevel gear of a kind of cored screw bar twice-coiled devices shown in Fig. 1
The second structural representation in hole；
Figure 11 is the gear bore axes of the second bevel gear of a kind of cored screw bar twice-coiled devices shown in Fig. 1
The second in hole couples sectional schematic diagram.
1, lower shell；2, auxiliary leg；3, gear assembly；4, bull screw mandrel；5, ball screw；6、
Upper mounting seat；7, rotary handle；8, guide rod；9, bull screw mandrel coupling nut；10, gearbox-case；
11, the first bevel gear；12, the second bevel gear；13, the second bearing；14, clutch shaft bearing；15, sleeve；
16, coupling nut；17, back-up ring；18, connection seat；19, round end；20, gear end；21, locking
Nut；22, coupling sleeve；23, ball screw nut；24, semi-ring locking nut；25, semi-ring；26、
Guide rod throwout sleeve；27, Anti-extrusion spiral shell pad；28, floating torque arm；29, confinement block；30, floating is turned round
Power seat；31, gear-box mounting seat；121, circular arc；122, seamed edge；123, keyway.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is described in further detail.With
Lower embodiment is used for illustrating the present invention, but is not limited to the scope of the present invention.
See shown in Fig. 1 and Fig. 6, a kind of cored screw bar twice-coiled devices, for Double helix elevating mechanism,
Including being placed in the lower shell 1 of bottom, lower shell 1 is hollow tubular structure, is provided with guide rod in lower shell 1
8 and bull screw mandrel 4, bull screw mandrel 4 is hollow-core construction, and the outer surface of bull screw mandrel 4 is provided with screw thread, bull
The cross sectional shape of screw mandrel 4 is the fabricated structure of circular arc 121 and seamed edge 122, or offers key on circular arc 121
The structure of groove 123, the outer surface of bull screw mandrel 4 is provided with screw thread, and bull screw mandrel 4 is sheathed on outside guide rod 8
Circle, the top of bull screw mandrel 4 is provided with ball screw 5, and ball screw 5 is hollow-core construction, ball screw 5
Outer surface is provided with screw thread, and ball screw 5 is set in bull screw mandrel 4, and the top of guide rod 8 is placed in ball wire
In bar 5, guide rod 8 slides up and down in bull screw mandrel 4 and ball screw 5, and ball screw 5 is at many captaculas
Upper and lower displacement in bar 4；
The upper end of lower shell 1 is provided with gear assembly 3, and gear assembly 3 controls bull screw mandrel 4 and ball screw
The upper and lower displacement of 5, gear assembly 3 is installed on the outer ring of lower shell 1；
The upper end of bull screw mandrel 4 is provided with connection seat 18, and connection seat 18 one end is installed on outside bull screw mandrel 4
Circle, the other end are installed on the outer ring of ball screw 5, ball screw 5 upper and lower displacement in connection seat 18；
The upper end of ball screw 5 is provided with mounting seat 6, and upper mounting seat 6 is used for installing the instrument needing to set up,
For setting up the base of instrument, stent-type or other structures can be typically used by peripheral hardware in upper mounting seat 6,
As long as can be fixed in mounting seat 6 can.
The version of the upper mounting seat 6 of the application refers to Fig. 1, Fig. 6 or Fig. 7, it is also possible to be that other are any
Meet structure and the form of design requirement.
Seeing shown in Fig. 2 and Fig. 4, gear assembly 3 includes gearbox-case 10, gear-box mounting seat 31 and
Bull screw mandrel coupling nut 9, gear-box mounting seat 31 is arranged at the upper end of lower shell 1, gearbox-case 10
Being fixed in described gear-box mounting seat 31, bull screw mandrel coupling nut 9 is arranged at bull screw mandrel 4
Outer ring, the inner ring of bull screw mandrel coupling nut 9 is provided with screw thread, the inner ring of bull screw mandrel coupling nut 9
The screw-threaded engagement of the outer surface of screw thread and bull screw mandrel 4；
Being provided with the first bevel gear 11 and the second bevel gear 12 in gearbox-case 10, the first bevel gear 11 wraps
Including gear end 20 and round end 19, it is internal that gear end 20 is placed in gearbox-case 10, and round end 19 is placed in
Gearbox-case 10 is outside, and round end 19 is provided with rotary handle 7, the gear end of the first bevel gear 11
20 tops being placed in gear-box mounting seat 31, gear end 20 and the gear-box mounting seat of the first bevel gear 11
Clutch shaft bearing 14, clutch shaft bearing 14 and bull screw mandrel 4 driving coupling, the second bevel gear it is provided with between 31
The top of 12 gear end 20 being installed on the first bevel gear 11, the second bevel gear 12 and the first bevel gear 11
Gear end 20 engage, the upper end of the second bevel gear 12 is provided with the second bearing 13, the second bevel gear 12
Gear internal diameter axis hole couples, with multiple lead screw 4, the combination type knot that section configuration is seamed edge 122 and circular arc 121
Offering the structure of keyway 123 on structure, or circular arc 121, second bevel gear 12 first line of a couplet is connected to many head nuts, many
Head nut engages with bull screw mandrel 4, and the lower section of the second bevel gear 12 is provided with sleeve 15, and sleeve 15 is set with
In the outer ring of bull screw mandrel 4, the first bevel gear 11 is solid with gearbox-case 10 assembling by coupling nut 16
Fixed, it is provided with back-up ring 17 between coupling nut 16 and rotary handle 7.
The gear internal diameter axis hole of second bevel gear 12 of the present invention is rib with the section configuration that couples of bull screw mandrel 4
The combination of the combination of limit 122 and circular arc 121 or keyway 123 and circular arc 121, referring specifically to Fig. 8 to Figure 11.
Wherein Fig. 8 and Fig. 9 is respectively the first structural representation of gear internal diameter axis hole of the present invention the second bevel gear 12
Figure and connection sectional schematic diagram thereof, its connection section is combined by circular arc 121 and seamed edge 122, Qi Zhongyuan
The arc 121 centralized positioning when the second bevel gear 12 and bull screw mandrel 4 couple, seamed edge 122 is used for transmitting
Power.
Figure 10 to Figure 11 is respectively the second structural representation coupling section of the present invention the second bevel gear 12
And connection sectional schematic diagram, it couples section is to offer keyway 123, wherein circular arc 121 on circular arc 121
Centralized positioning when the second bevel gear 12 and bull screw mandrel 4 couple, keyway 123 is used for transmitting power.
The shape coupling section of the present invention the second bevel gear 12 is not limited to above-mentioned two situations, any simply
Deformation broadly fall into protection scope of the present invention.
The most preferred scheme of back-up ring 17 of the present invention is elastic shaft back-up ring, and other structures are similar to, and function is identical
Back-up ring belongs to protection scope of the present invention.
The most preferred scheme of bull screw mandrel coupling nut 9 of the present invention for using trapezoidal nut, its screw thread
Conical surface laminating degree is higher, is difficult to loosen, and processing performance is good, tooth intensity high, centering is effective.The present invention
Bull screw mandrel can also use other kinds of nut, structure be similar to, what function was identical belongs to the present invention
Protection domain.
Shown in Figure 3, connection seat 18 includes coupling sleeve 22, guide rod throwout sleeve 26 and locking nut 21,
Ball screw nut 23 is actively coupled by locking nut 21 with bull screw mandrel 4, the fixing peace of locking nut 21
Being loaded on the upper end of bull screw mandrel 4, it is internal that guide rod throwout sleeve 26 is placed in ball screw 5, guide rod throwout sleeve
26 are set in guide rod 8 outer ring, and ball screw 5 lower end is seated on guide rod throwout sleeve 26, and coupling sleeve 22 overlaps
Being loaded on bull screw mandrel 4 outside, coupling sleeve 22 lower end is provided with semi-ring 25, semi-ring 25 setting-in and bull screw mandrel
The outer ring of 4, semi-ring 25 is fixed by semi-ring locking nut 24, is provided with ball screw spiral shell in coupling sleeve 22
Female 23, ball screw nut 23 is set in the outer ring of ball screw 5, the lower surface of ball screw nut 23
Contacting with the upper surface of bull screw mandrel 4, locking nut 21 is installed on the upper end of coupling sleeve 22, locking screw
Being provided with Anti-extrusion spiral shell pad 27 on female 21, Anti-extrusion spiral shell pad 27 is placed in the end of guide rod 8, and the present invention's is anti-
Abjection spiral shell pad 27 is fixed by bolt or screw or other fixed forms.
Shown in Figure 5, guide rod 8 includes that floating torque arm 28, one end of floating torque arm 28 are provided with floating
Dynamic torsion seat 30, the other end are provided with confinement block 29, and floating torsion seat 30 is placed in lower shell 1；
The radial dimension in the cross section of floating torsion seat 30 is more than the radial dimension in the cross section of floating torque arm 28,
The radial dimension in the cross section of confinement block 29 is more than or equal to the radial direction of the circumscribed circle in the cross section of floating torque arm 28
Size.
The quantity of the auxiliary leg 2 in the present invention is 1 or 2 or multiple, and particular number can be according to reality
Border job demand selects.
The using method of a kind of cored screw bar twice-coiled devices of concrete invention, may refer to Fig. 7, and it is
The structural representation of one embodiment of the present invention, but the use of the present invention is not limited to this kind of enforcement
Mode, as long as contain and the one cored screw identical structure of bar twice-coiled devices of the present invention, function, effect
Scheme, belong to protection scope of the present invention.
One embodiment of the present invention: the quantity of auxiliary leg 2 is 1 or 2 or multiple, auxiliary
Lower limb 2 includes secondary guide mechanism and auxiliary support mechanism, and auxiliary support mechanism is supported in ground, secondary guide
Mechanism is actively coupled with cored screw bar twice-coiled devices, and the telescopic displacement up and down of secondary guide mechanism is controlled by
Elevating mechanism.
Another embodiment of the invention, the quantity of auxiliary leg 2 is 1, and auxiliary leg 2 includes auxiliary
Help supporting mechanism, auxiliary support mechanism to be installed on the lower section of cored screw bar twice-coiled devices, assist support machine
Structure is supported in ground.
Gear assembly 3 provides power or motor to provide power by manpower.
The principle summary of a kind of cored screw bar twice-coiled devices of the present invention: rotary handle 7 is at manpower or electricity
Rotating under the drive of power, thus driven gear assembly 3 to rotate, gear assembly 3 has rotarily driven many captaculas
Bar 4 rotates, screw pair produce axial displacement, and meanwhile, locking nut 21 couples with bull screw mandrel 4 top,
Bull screw mandrel 4 rotates and has just driven locking nut 21 to rotate, under the effect of guide rod 8, and locking nut 21
Secondary rotation can make ball screw 5 upper and lower displacement.
Time actually used, a kind of cored screw bar twice-coiled devices of the present invention when contraction state, guide rod 8,
Bull screw mandrel 4, ball screw 5 are all to be set in together the most substantially, considerably reduce and take sky
Between, when it is desired to be used, withdrawing device, drive the first umbrella by the rotary handle 7 at gear assembly 3
Gear 11 rotates, and the first bevel gear 11 engages with the second bevel gear 12, and the first bevel gear 11 rotates the most permissible
Driving the second bevel gear 12 to rotate, thus drive bull screw mandrel 4 to rotate, bull screw mandrel 4 drives locking nut
21 rotate, and guide rod 8 of the present invention plays control ball screw 5 spline so that ball screw 5 can only go up bottom
Move, i.e. along axis shift, it is impossible to rotate.Guide rod 8 is in lower shell 1, bull screw mandrel 4, ball screw 5
Slide.Meanwhile, when device shrinks, guide rod 8 is all received into ball screw 5 medium position, outside instead of
Put the guide function of guide rod.
The guide rod 8 of the present invention includes that floating torque arm 28, one end of floating torque arm 28 are provided with floating torsion
Seat 30, the other end are provided with confinement block 29, and floating torsion seat 30 is placed in lower shell 1；Floating torsion seat
The radial dimension in the cross section of 30 is more than the radial dimension in the cross section of floating torque arm 28, the cross section of confinement block 29
Radial dimension more than or equal to the radial dimension of circumscribed circle in the cross section of floating torque arm 28, guide rod 8 is control
The rod-like device of ball screw 5 spline processed.
The above-mentioned situation for built-in guide rod 8, the present invention there is also another embodiment, the most external guide rod 8
Situation, now, it is outside that guide rod 8 is connected in bull screw mandrel 4 and ball screw 5, and ball screw 5 is distinguished
5 solid constructions of ball screw, remaining structure and principle in said structure, device during external guide rod 8
Identical with said structure, the most too much illustrate.
While device rises or falls, coordinate the also auxiliary leg 2 that apparatus of the present invention are used together, this
The quantity of the auxiliary leg 2 in invention is 1 or 2 or multiple, and particular number can be according to real work
Needs select.
One embodiment of the present invention: the quantity of auxiliary leg 2 is 1 or 2 or multiple, auxiliary
Lower limb 2 includes secondary guide mechanism and auxiliary support mechanism, and auxiliary support mechanism is supported in ground, secondary guide
Mechanism is actively coupled with elevating mechanism, and the telescopic displacement up and down of secondary guide mechanism is controlled by elevating mechanism.
Another embodiment of the invention, the quantity of auxiliary leg 2 is 1, and auxiliary leg 2 includes auxiliary
Helping supporting mechanism, auxiliary support mechanism to be installed on the lower section of elevating mechanism, auxiliary support mechanism is supported in ground.
Concrete, the hollow tubular thing of auxiliary leg 2 the most several socket use, it is along with elevating mechanism
Rising and rise together, decline together along with the decline of elevating mechanism, auxiliary leg 2 can be direct
It is arranged on the supporting leg type structure below elevating mechanism, it is also possible to be the supporting structure of peripheral hardware, when propping up for peripheral hardware
During shelf structure, utilizing connector to couple everywhere moving part respectively, concrete position selects according to practical situation,
As long as not affecting the normal upper and lower displacement of device.
Utilize the fixing instrument needing to set up of upper mounting seat 6 above elevating mechanism the most exactly, it is also possible to
In upper mounting seat 6, peripheral hardware platform or base fix larger instrument, or can be that multiple support comes
The fixing instrument needing to set up, can be realized by assembly of the invention.
It addition, the auxiliary leg 2 in the application Fig. 7 belongs to the external guide rod of device, its principle and other figures
Guide rod 8 in paper (concrete such as Fig. 2 or Fig. 3 or Fig. 6) is identical.
The power source of the present invention can be to rotate manually, it is also possible to utilizes motor control, either detects
Or photography or other field are the most convenient.
The present invention uses positive and negative two joint screw rod structures, two joint screw rods, i.e. screw mandrel nesting uses, and is shrinking
Decreasing under state and take up room, rational in infrastructure, easy to operate, range is wide.
A kind of cored screw bar twice-coiled devices of the present invention can stretch out two joints, also under identical length
That is extension elongation has more more than by about one time than like product extension elongation in the market, Er Qie
Can self-locking, the most easily exact localization operation during random length；Even 1.3 meters long cylinders, retract
Shi Junwei 1.3 meters, and like product can only reach about 2 meters in the market, the liter of the present invention
Descending mechanism stretches out up to about 3 meters, the far super like product on the market of extension elongation, and its self-locking merit
Can realize the locking of random length, allow it meet the demand of field of employment.
The above is only the preferred embodiment of the present invention, is not limited to the present invention, it is noted that
For those skilled in the art, on the premise of without departing from the technology of the present invention principle, also
Can make some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (6)
1. a cored screw bar twice-coiled devices, it is characterised in that include the lower shell being placed in bottom
(1), described lower shell (1) is hollow tubular structure, is provided with guide rod (8) in described lower shell (1)
With bull screw mandrel (4), described bull screw mandrel (4) is hollow-core construction, the appearance of described bull screw mandrel (4)
Face is provided with screw thread, and described bull screw mandrel (4) is sheathed on the outer ring of guide rod (8), described bull screw mandrel (4)
Top be provided with ball screw (5), described ball screw (5) is hollow-core construction, described ball screw (5)
Outer surface be provided with screw thread, in described ball screw (5) is set in bull screw mandrel (4), described guide rod (8)
Top be placed in ball screw (5) in, described guide rod (8) is at bull screw mandrel (4) and ball screw (5)
Inside slide up and down, described ball screw (5) upper and lower displacement in bull screw mandrel (4)；
The upper end of described lower shell (1) is provided with gear assembly (3), and described gear assembly (3) controls many
Captacula bar (4) and the upper and lower displacement of ball screw (5), described gear assembly (3) is installed on lower shell (1)
Outer ring；
The upper end of described bull screw mandrel (4) is provided with connection seat (18), and described connection seat (18) one end is pacified
Be loaded on the outer ring of bull screw mandrel (4), the other end is installed on ball screw (5) outer ring, described ball wire
Bar (5) upper and lower displacement in connection seat (18)；
The upper end of described ball screw (5) is provided with mounting seat (6), and described upper mounting seat (6) is used for
The instrument needing to set up is installed.
A kind of cored screw bar twice-coiled devices the most according to claim 1, it is characterised in that described
Gear assembly (3) includes that gearbox-case (10), gear-box mounting seat (31) and bull screw mandrel couple spiral shell
Female (9), described gear-box mounting seat (31) is arranged at the upper end of lower shell (1), outside described gear-box
Shell (10) is fixed on described gear-box mounting seat (31), described bull screw mandrel coupling nut (9)
Being arranged at the outer ring of bull screw mandrel (4), the inner ring of described bull screw mandrel coupling nut (9) is provided with screw thread,
The screw thread of the inner ring of described bull screw mandrel coupling nut (9) is nibbled with the screw thread of the outer surface of bull screw mandrel (4)
Close；
The first bevel gear (11) and the second bevel gear (12) it is provided with in described gearbox-case (10),
Described first bevel gear (11) includes gear end (20) and round end (19), described gear end (20)
Being placed in gearbox-case (10) internal, it is outside that described round end (19) is placed in gearbox-case (10),
Rotary handle (7), the gear end (20) of described first bevel gear (11) are installed on described round end (19)
It is placed in the top of gear-box mounting seat (31), the gear end (20) of described first bevel gear (11) and tooth
Clutch shaft bearing (14), described clutch shaft bearing (14) and many captaculas it are provided with between roller box mounting seat (31)
Bar (4) driving coupling, described second bevel gear (12) is installed on the gear end (20) of the first bevel gear (11)
Top, described second bevel gear (12) engages with the gear end of the first bevel gear (11), described second
The upper end of bevel gear (12) is provided with the second bearing (13), the gear bore axes of the second bevel gear (12)
Hole couples, with multiple lead screw (4), the fabricated structure that section configuration is seamed edge (122) and circular arc (121),
Or on circular arc (121), offer the structure of keyway (123), described second bevel gear (12) first line of a couplet is connected to many
Head nut, described many head nuts engage with bull screw mandrel (4), and the lower section of described second bevel gear (12) sets
Being equipped with sleeve (15), described sleeve (15) is set in the outer ring of bull screw mandrel (4), described first umbrella tooth
Wheel (11) is fixing with gearbox-case (10) assembling by coupling nut (16), described coupling nut (16)
And it is provided with back-up ring (17) between rotary handle (7).
A kind of cored screw bar twice-coiled devices the most according to claim 1, it is characterised in that described
Connection seat (18) includes coupling sleeve (22), guide rod throwout sleeve (26) and locking nut (21), institute
State ball screw nut (23) to be actively coupled by locking nut (21) with bull screw mandrel (4), described lock
Jack panel (21) is fixedly installed in the upper end of bull screw mandrel (4), and described guide rod throwout sleeve (26) is placed in
Ball screw (5) is internal, and described guide rod throwout sleeve (26) is set in guide rod (8) outer ring, described rolling
Ballscrew (5) lower end is seated on guide rod throwout sleeve (26), and described coupling sleeve (22) is set in many captaculas
Bar (4) is outside, and described coupling sleeve (22) lower end is provided with semi-ring (25), and described semi-ring (25) is embedded in
In the outer ring of bull screw mandrel (4), described semi-ring (25) is fixed by semi-ring locking nut (24), described
Being provided with ball screw nut (23) in coupling sleeve (22), described ball screw nut (23) is set in
The outer ring of ball screw (5), the lower surface of described ball screw nut (23) and bull screw mandrel (4)
Upper surface contacts, and described locking nut (21) is installed on the upper end of coupling sleeve (22), described locking screw
Being provided with Anti-extrusion spiral shell pad (27) on female (21), described Anti-extrusion spiral shell pad (27) is placed in guide rod (8)
End.
A kind of cored screw bar twice-coiled devices the most according to claim 1, it is characterised in that described
Guide rod (8) includes that floating torque arm (28), one end of described floating torque arm (28) are provided with floating and turn round
Power seat (30), the other end are provided with confinement block (29), and described floating torsion seat (30) is placed in lower shell
(1) in；
The radial dimension in the cross section of described floating torsion seat (30) is more than the cross section of floating torque arm (28)
Radial dimension, the radial dimension in the cross section of described confinement block (29) is more than or equal to floating torque arm (28)
The radial dimension of circumscribed circle in cross section.
A kind of cored screw bar twice-coiled devices the most according to claim 2, it is characterised in that described
The cross sectional shape of bull screw mandrel (4) is the fabricated structure of circular arc (121) and seamed edge (122), or circular arc
(121) structure of keyway (123) is offered on.
A kind of cored screw bar twice-coiled devices the most according to claim 1, it is characterised in that described
Gear assembly (3) provides power or motor to provide power by manpower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450867.6A CN105953048B (en) | 2016-06-21 | 2016-06-21 | A kind of cored screw bar twice-coiled devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450867.6A CN105953048B (en) | 2016-06-21 | 2016-06-21 | A kind of cored screw bar twice-coiled devices |
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| Publication Number | Publication Date |
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| CN105953048A true CN105953048A (en) | 2016-09-21 |
| CN105953048B CN105953048B (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610450867.6A Active CN105953048B (en) | 2016-06-21 | 2016-06-21 | A kind of cored screw bar twice-coiled devices |
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| CN112096047A (en) * | 2020-09-11 | 2020-12-18 | 厦门安科科技有限公司 | Attached lifting scaffold |
| CN113775626A (en) * | 2021-08-23 | 2021-12-10 | 张东 | Torsional shear type bolt with high assembly precision |
| CN113983318A (en) * | 2021-10-26 | 2022-01-28 | 中国电子科技集团公司第三十八研究所 | Roller type synchronous telescopic device |
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| CN113983318B (en) * | 2021-10-26 | 2023-04-11 | 中国电子科技集团公司第三十八研究所 | Roller type synchronous telescopic device |
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| CN105953048B (en) | 2019-02-12 |
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