CN102207180B - Sectioned lead screw type lifting device - Google Patents
Sectioned lead screw type lifting device Download PDFInfo
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- CN102207180B CN102207180B CN 201010501970 CN201010501970A CN102207180B CN 102207180 B CN102207180 B CN 102207180B CN 201010501970 CN201010501970 CN 201010501970 CN 201010501970 A CN201010501970 A CN 201010501970A CN 102207180 B CN102207180 B CN 102207180B
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- rotating nut
- lead screw
- merogenesis
- leading screw
- type lifting
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Abstract
The invention relates to a sectioned lead screw type lifting device. The device comprises a lead screw which can be connected to the bottom of a lifting table, and a rotating nut which can rotate under the actuation of an external driving device, wherein the lead screw is formed by hinging a plurality of sections of lead screws and has a structure capable of bending towards one side; a vertical section positioned between the rotating nut and the lifting table is rigid and the other sections are flexible; upper and lower end faces of the sectioned lead screw on the vertical section positioned between the rotating nut and the lifting table are pressed against end faces of adjacent sectioned lead screws respectively, so that the vertical section becomes a rigid rod piece which can transmit gravity of the table to the rotating nut; and compared with a transmission structure for transmitting load on a single side, a spiral structure is stressed uniformly and has higher loading capacity. Because a spiral connecting structure has self-locking capacity, when an external driving or transmission mechanism fails, the rotating nut can immediately and automatically lock the lead screw, so that the condition that the lifting table is settled is avoided; therefore, the safety is greatly improved.
Description
Technical field
The present invention relates to a kind of lowering or hoisting gear, especially relate to a kind of sectioned lead screw type lifting device.
Background technique
For taking up room of traditional lowering or hoisting gear existence deficiency large, lifting stroke limiting system itself, there is the inventor to propose " flexible lifting device " (patent No.: improving technology ZL 200320lll378.6) by name, it comprises the driving mechanism between motor reducer and the self-powered platform, driving mechanism is made of sprocket wheel and flexible chain, wherein flexible chain is rigidity in vertical section, is flexible at the curved segment position that contacts with sprocket wheel.Also have the inventor to propose the another kind of structure-improved of " a kind of Flexible Rack Lifting Device " (patent No.: ZL 200420020574.7) by name, it comprises fixed support, drive cassette, the lifting support that is fixed in ground, the lowering or hoisting gear that is used for the jacking lifting support, lowering or hoisting gear passes in fixed support, lowering or hoisting gear comprises that stiff chain and lifting support are affixed by the hinged stiff chain that forms of more piece tooth bar, slide rail; Support bracket fastened upper end is equipped with the gear that cooperates with tooth bar, and gear is driven by the drive unit in the drive cassette; Fixed support is provided with a guide rail, the top of guide rail in vertical direction, and the extension that is provided with arc all is provided with the pulley that cooperates with guide rail to horizontal position on every joint tooth bar.Above-mentioned two publications respectively by flexible chain, the hinged stiff chain that forms of more piece tooth bar, have more efficiently reduced the volume of lowering or hoisting gear self, and foundation ditch is more shallow, can comparatively install and use in the narrow space, and the jacking capacity of certain stroke is provided; But all have the following disadvantages: one, rigid section as jacking load-bearing carrier, no matter be chain structure or gear structure, (the former is sprocket wheel with actuator, the latter is gear) engaging piece all be in a side of rigid section, so the rigid section two ends be subjected to force unbalance, can produce larger horizontal component, rigid section is prone to the situation of broken teeth, bending when load is excessive, causes thus the load capacity of whole device limited; They are two years old, when the jacking state, when in case external driver device, driving mechanism etc. break down, above-mentioned two kinds of devices all can lose efficacy, and make the suddenly sedimentation under Action of Gravity Field of device or the article of institute's lifting, easily economic loss, form larger potential safety hazard, the lift platform that the personnel activity is especially arranged, for example elevator stage, lifting grandstand, the Security of these climbing structures is obviously not enough; Its three, the bearing surface area of actuator and rigid section contacting part is all less in aforementioned two devices, under the long-term state that bears a heavy burden, produces easily geometry deformation, and then causes failure of apparatus.
Summary of the invention
Main purpose of the present invention provides a kind of sectioned lead screw type lifting device, and its rigid section stress equalization, bearing capacity are large; Can self-locking and have high Security.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of sectioned lead screw type lifting device, comprise the leading screw that can be connected in the raising platform bottom, and externally drive unit is actuated lower rotating rotating nut, described leading screw is by some sections hinged the forming of merogenesis leading screw, for can be to the structure of a lateral buckling, its vertical section that is between rotating nut and the raising platform is rigidity, and all the other sections are flexible.Be in the merogenesis leading screw of vertical section between rotating nut and the raising platform, its upper and lower end face connects with adjacent leading screw end face respectively, and vertical section is become can be with the rigid bar of raising platform weight transfer to rotating nut; The merogenesis leading screw is under the actuating of rotating nut, form the action of jacking or decline, owing to be that spiral connects, so the leading screw rigid section can pass to rotating nut by the screw thread on the circumference with the load of top, the Vertical direction of active force makes a concerted effort to be distributed in its center between rigid section and the actuator, is in together on the center line of leading screw with the load of top, therefore, compared to the drive mechanism of one-sided transmission load, apparently, the load capacity of this helix structure is stronger; The more important thing is, because spiral link structure has self-lock ability, so when external drive or driving mechanism broke down, rotating nut can automatically lock leading screw immediately, thereby the situation of raising platform sedimentation can not occur, Security is largely increased; In addition, the worm structure of this feed screw nut, than sprocket wheel, the easier processing of gear, processing cost is lower; The screw thread transmission only needs the thread section of several complete turn, and than gear and sprocket wheel, rotating nut only needs less height, and shared spatial altitude is less, can be suitable for more using in the narrow space.
As preferably, described merogenesis leading screw one end face is provided with groove, and the other end is provided with the boss adaptive with this groove; Adjacent merogenesis leading screw is articulated and connected by boss and recess sidewall setting.This structure, join strength is large, rotates flexibly, easily processing, easy to assembly.
In order to make the easier operation in articulated section and fixing, as preferably, be recessed into gap slot in the articulated section outer wall of described groove.Make the easier and adjacent leading screw assembling of merogenesis leading screw, and be easier to be fixedly connected with pin, make the fixed structure of connecting pin have larger operating space, avoid the path of connecting pin and associated components thereof and rotating nut internal thread to produce the space interference phenomenon.
As preferably, described merogenesis leading screw both ends of the surface are plane or a pair of adaptive ladder surface.When merogenesis leading screw both ends of the surface were a pair of adaptive ladder surface, the parting plane between the stepped surfaces was substantially vertical with the usable rotational direction of merogenesis leading screw, and this parting plane can be plane or inclined-plane or cambered surface.
The transmission of rotating nut and external drive mechanism can be adopted band transmission or chain transmission or gear transmission; As preferably, the upper end portion of described rotating nut is made as bevel gear; Rotating nut is arranged with fixed base outward, the rolling bearing formation is set between the two is rotationally connected; Be provided with plane bearing between the bevel gear of rotating nut and fixed base end face.This structure, rotating nut are rotated flexibly, are in transmission connection conveniently with the outside, operate steadily, and skidding can not occur.Bevel gear can be the directly integrative-structure of processing of rotating nut, also can be the Split type structure of assembling.
As preferably, the outer wall of merogenesis leading screw articulated section offside is provided with restraining groove, and this restraining groove is parallel with merogenesis leading screw center line; Described rotating nut upper and lower is respectively equipped with the guide pad that can insert described restraining groove.Two guide pads can be leading screw leading role are provided, wherein, the guide pad on rotating nut top also can be vertical section the lateral Displacement effect is provided, avoid vertical section to encircle laterally, when raising platform descends, the merogenesis leading screw that the top enters rotating nut can keep concentric preferably with rotating nut, both is aligned by screw thread more accurately, even also the screw thread of merogenesis leading screw contacts and screws with nut thread more smoothly.
For making the below be about to enter the merogenesis leading screw of rotating nut, remain on better the state concentric with rotating nut, as preferably, described rotating nut bottom is provided with guide wheel, and this guide wheel and guide pad relatively are distributed in the both sides of rotating nut center line.This structure, below enter the merogenesis leading screw of rotating nut, can keep preferably concentricity with rotating nut, and the starting point of both screw threads is aligned more accurately, make the screw thread of merogenesis leading screw contact and screw with nut thread more smoothly.
Based on the consideration that reduces setting height(from bottom), compliant section is traditionally arranged to be level; For the level of flexibility section is arranged in order, improving whole operational efficiency, as preferably, the bottom of described leading screw horizontal segment is provided with the leading truck that can insert described restraining groove, and the top that leading truck closes on described rotating nut is provided with pinch roller.Make the merogenesis leading screw that enters horizontal segment mobile successively by leading truck, and make it to be in the horizontal state and can not upwarp by pinch roller, so the merogenesis leading screw of horizontal segment forms arrangement in good order through the guiding of pinch roller and leading truck.
Be further to improve bearing capacity, as preferably, the thread engagement of described merogenesis leading screw and rotating nut is buttress thread form.Be to strengthen the Security of single unit system, as preferably, the end that described rotating nut angle of thread is larger is made as downwards.This structure, self-locking property is better, load is larger.
Therefore, that the present invention has is rational in infrastructure, be easy to the characteristics such as making, especially has following beneficial effect:
1, the helix structure circumference is stressed, and rigid section is stressed more balanced in vertical direction, but the larger load of jacking;
2, have self-lock ability, have good Security;
3, self take up room littlely, be suitable for more using in the narrow space;
4, easily processing, cost are low, are suitable for producing in enormous quantities and make.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present invention;
Accompanying drawing 3 is a kind of structural representations of rotating nut;
Accompanying drawing 4 is a kind of structural representations of merogenesis leading screw;
Accompanying drawing 5 is right elevations of accompanying drawing 4;
Accompanying drawing 6 is left views of accompanying drawing 4;
Accompanying drawing 7 is worm's eye views of accompanying drawing 4;
Accompanying drawing 8 is axonometric drawings of merogenesis leading screw;
Accompanying drawing 9 is axonometric drawings of the merogenesis leading screw the other end;
Accompanying drawing 10 is structural representations of installing and using of the present invention;
Accompanying drawing 11 is plan views of accompanying drawing 10;
Accompanying drawing 12 is linkage structure schematic representation of the present invention and raising platform, support;
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment: a kind of sectioned lead screw type lifting device of the present invention, shown in accompanying drawing 1, accompanying drawing 3, accompanying drawing 10, accompanying drawing 11, accompanying drawing 12, it comprises the leading screw 32 that can be connected in raising platform 4 bottoms, and externally drive unit is actuated lower rotating rotating nut 31, leading screw 32 is by some sections merogenesis leading screws 320 hinged forming, for can be to the structure of a lateral buckling, its vertical section that is between rotating nut 31 and the raising platform 4 be rigidity, and all the other sections be flexibility; These merogenesis leading screw 320 both ends of the surface are parallel to each other.Merogenesis leading screw 320 is buttress thread form with the thread engagement of rotating nut 31.The end that rotating nut 31 angle of threads are larger is made as downwards.
Shown in accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8, accompanying drawing 9, merogenesis leading screw 320 both ends of the surface 321,322 are plane or a pair of adaptive ladder surface.Merogenesis leading screw 320 1 end faces 322 are provided with groove 326, and other end 321 is provided with the boss 324 that can insert groove 326; Adjacent merogenesis leading screw 320 is articulated and connected by boss 324 and groove 326 sidewall settings.The articulated section 325 outer wall indent grooving of groove 326.The outer wall of merogenesis leading screw 320 articulated sections (that is boss 324) offside is provided with restraining groove 323, and this restraining groove 323 is parallel with merogenesis leading screw 320 center lines.
As shown in Figure 3, the upper end portion of rotating nut 31 is made as bevel gear, the gear engagement of this bevel gear and transmission shaft 313 ends, and transmission shaft 313 is in transmission connection in external driver device; Be arranged with fixed base 315 outside the rotating nut 31, rolling bearing 311 formations be set between the two be rotationally connected; Be provided with plane bearing 312 between the bevel gear of rotating nut 31 and fixed base 315 end faces.
As shown in Figure 11, rotating nut 31 upper and lowers are respectively equipped with the guide pad 33,34 that can insert described restraining groove 323.Rotating nut 31 bottoms are provided with guide wheel 36, and this guide wheel 36 and guide pad 34 relatively are distributed in the both sides of rotating nut 31 center lines.Guide wheel 36 is fixed on the scaffold 39 with guide pad 34.
As shown in Figure 2, the bottom of merogenesis leading screw 320 horizontal segments is provided with the leading truck 35 that can insert described restraining groove 323, and the top that leading truck 35 closes on described rotating nut 31 1 ends is provided with pinch roller 37.
When installing and using, shown in accompanying drawing 10, accompanying drawing 11, accompanying drawing 12, scaffold 39 is fixed in the working position of raising platform 4 belows, rotating nut 31 is fixed on the scaffold 39 by fixed base 315, leading screw 32 1 ends are fixedly connected on the bottom of raising platform 4, raising platform 4 two ends are provided with guide rail 2 symmetrically, and guide rail 2 is installed on the inboard of fixed support 1, and guide rail 2 comprises slide 21, slide block 22 and roller 23; During work, the external driver device drive end is established cogged transmission shaft 313 and is rotated, and transmission shaft 313 driven rotary nuts 31 are actuated merogenesis leading screw 32 and formed jacking or down maneuver thereupon in fixed base 315 interior revolutions, and raising platform 4 is lifted or sedimentation.
As a kind of lowering or hoisting gear, the present invention can be applicable to the fields such as stage, orchestra, grandstand, automobile, makes respectively jacking apparatus and use in the equipment such as elevator stage, lifting orchestra, lifting grandstand, vehicle hoisting.
Know-why of the present invention is the combination by spiral top Shengji art and leading screw merogenesis technology, make jacking apparatus have stress equalization and flexibility concurrently, when making it only to need less setting height(from bottom), also have stronger load capacity, and utilize the self-lock ability of spiral that high Safety performance is provided.
Present embodiment is as the explanation to the technology of the present invention principle; and it is non-limiting; to those skilled in the art; also can exist some distortion or technology to replace in the practical application; the horizontal segment guiding structure that for example is made of leading truck 35 and pinch roller 37, the hinging structure of merogenesis leading screw all can be selected other structural types, but these simple malformations; and without prejudice to invention spirit of the present invention, so still belong to protection scope of the present invention.
Claims (9)
1. sectioned lead screw type lifting device, comprise the leading screw (32) that can be connected in raising platform (4) bottom, and externally drive unit is actuated lower rotating rotating nut (31), it is characterized in that: described leading screw (32) is by hinged the forming of some sections merogenesis leading screws (320), for can be to the structure of a lateral buckling, its vertical section that is between rotating nut (31) and the raising platform (4) is rigidity, and all the other sections are flexible; Described merogenesis leading screw (320) one end faces (322) are provided with groove (326), other end (321) is provided with the boss (324) adaptive with this groove (326), and adjacent merogenesis leading screw (320) is articulated and connected by boss (324) and groove (326) sidewall setting.
2. a kind of sectioned lead screw type lifting device according to claim 1 is characterized in that: be recessed into gap slot in articulated section (325) outer wall of described groove (326).
3. a kind of sectioned lead screw type lifting device according to claim 1 is characterized in that: described merogenesis leading screw (320) both ends of the surface (321,322) are plane or a pair of adaptive ladder surface.
4. according to claim 1 and 2 or 3 described a kind of sectioned lead screw type lifting devices, it is characterized in that: the outer wall of merogenesis leading screw (320) articulated section offside is provided with restraining groove (323), and this restraining groove (323) is parallel with merogenesis leading screw (320) center line; The upper and lower of rotating nut (31) is respectively equipped with the guide pad (33,34) that can insert this restraining groove (323).
5. a kind of sectioned lead screw type lifting device according to claim 4, it is characterized in that: described rotating nut (31) bottom is provided with guide wheel (36), and this guide wheel (36) and guide pad (34) relatively are distributed in the both sides of rotating nut (31) center line.
6. a kind of sectioned lead screw type lifting device according to claim 4, it is characterized in that: the bottom of described leading screw (32) horizontal segment is provided with the leading truck (35) that can insert described restraining groove (323), and the top that leading truck (35) closes on described rotating nut (31) one ends arranges pinch roller (37).
7. according to claim 1 and 2 or 3 described a kind of sectioned lead screw type lifting devices, it is characterized in that: described rotating nut (31) is outer to be arranged with fixed base (315), rolling bearing (311) is set between the two consists of and be rotationally connected; The upper end portion of rotating nut (31) is made as the bevel gear structure, is provided with plane bearing (312) between bevel gear and fixed base (315) end face.
8. it is characterized in that according to claim 1 and 2 or 3 described a kind of sectioned lead screw type lifting devices: described merogenesis leading screw (320) is buttress thread form with the thread engagement of rotating nut (31).
9. a kind of sectioned lead screw type lifting device according to claim 8, it is characterized in that: the end that described merogenesis leading screw (320) angle of thread is larger is made as downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501970 CN102207180B (en) | 2010-10-11 | 2010-10-11 | Sectioned lead screw type lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501970 CN102207180B (en) | 2010-10-11 | 2010-10-11 | Sectioned lead screw type lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102207180A CN102207180A (en) | 2011-10-05 |
| CN102207180B true CN102207180B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010501970 Expired - Fee Related CN102207180B (en) | 2010-10-11 | 2010-10-11 | Sectioned lead screw type lifting device |
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| CN (1) | CN102207180B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2516271B (en) * | 2013-07-17 | 2015-08-05 | Ronen Perlin | Worm gears configuration |
| CN111517081B (en) * | 2020-04-10 | 2021-10-08 | 浙江立镖机器人有限公司 | Flexible transport vehicle and loading transport vehicle thereof |
| CN114655876A (en) * | 2022-03-09 | 2022-06-24 | 苏州泰瑞迅科技有限公司 | Chain type right-angle ejector rod mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2673841Y (en) * | 2003-12-10 | 2005-01-26 | 修玉松 | Flexible lifting device |
| CN101449889A (en) * | 2008-12-24 | 2009-06-10 | 刘进宝 | Lift bed |
| CN101734575A (en) * | 2009-12-17 | 2010-06-16 | 中国航天科技集团公司第五研究院第五一○研究所 | Design method of three-level lead screw linkage mechanical platform lifting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2608021B2 (en) * | 1993-08-02 | 1997-05-07 | 理研化機工業株式会社 | Foot-operated jack |
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2010
- 2010-10-11 CN CN 201010501970 patent/CN102207180B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2673841Y (en) * | 2003-12-10 | 2005-01-26 | 修玉松 | Flexible lifting device |
| CN101449889A (en) * | 2008-12-24 | 2009-06-10 | 刘进宝 | Lift bed |
| CN101734575A (en) * | 2009-12-17 | 2010-06-16 | 中国航天科技集团公司第五研究院第五一○研究所 | Design method of three-level lead screw linkage mechanical platform lifting |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-41293A 1995.02.10 |
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