CN103453100B - Dynamic combined screw and the guidance system for this dynamic combined screw - Google Patents
Dynamic combined screw and the guidance system for this dynamic combined screw Download PDFInfo
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- CN103453100B CN103453100B CN201310386239.2A CN201310386239A CN103453100B CN 103453100 B CN103453100 B CN 103453100B CN 201310386239 A CN201310386239 A CN 201310386239A CN 103453100 B CN103453100 B CN 103453100B
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Abstract
Dynamic combined screw and the guidance system for this dynamic combined screw, this screw comprises lock catch type cored screw structure, described lock catch type cored screw structure by support helix sheet and connect screw piece radially each other snap close formed; Described support helix sheet is the uniform section sheet that a depth of section is greater than cross-sectional width, and on this uniform section sheet apart from lower edges one fixed width place, the equally spaced positioning hole offering two groups of rectangles; Described connection screw piece is the uniform section sheet that a depth of section is less than cross-sectional width, is distributed with one group of locating tooth equally spacedly along this uniform section sheet side, and the position of described locating tooth is corresponding with the position of positioning hole on described support helix sheet; The shape of described locating tooth, structure, size are mated with positioning hole.This guidance system comprises base assembly, hollow column and driven unit.The present invention has the advantages such as simple and compact for structure, with low cost, easy and simple to handle, performance is good, applied widely.
Description
Technical field
The present invention is mainly concerned with mechanical transmission field, refer in particular to and a kind of separately deposit two groups of spiral steel discs are screwed into the novel hollow screw-rod structure realizing configuration each other by buckle structure, and the transmission guidance system realizing this snap close configuration of screw guide wheel by discrete distribution.
Background technique
Traditional power screw transmit motion and power by screw rod and screwing of nut.Dynamic combined spiral is then adopt Decomposition and composition two kinds of mechanical creation design MCD patterns to propose the box-like power screw thought of a kind of dynamic group.That is, by by traditional hollow rectangle screw rod threadingly tooth root helix cutting resolve into two deads in line and cylinder type hollow screw rod nested with one another; Separately deposit during inoperative, fitted together during work by special engaging-in Nie Chu mechanism (guidance system) again, its spiral number of turns can need automatically adjust and combine according to actual displacement.
At present, in known combined helical transmission device, cored screw drive mechanism (embedded meshing engagement structure) realizes the configuration of inlaid hollow screw-rod structure mainly through self nested positioning hole, locating tooth structure.Certain structural defect is there is in this structure in engineering practice.Meanwhile, the engaging-in Nie Chu mechanism (guidance system) corresponding with this structure is designed very complicated, and application is subject to obvious restriction; Locating tooth and positioning hole distribute vertically, less for side direction carrying lifting surface area, the easy unstability of lateral force; When being in for a long time in vibrations operating mode, easily cause loosening of engagement.Generally speaking, be mainly reflected in: 1. embedded screw rod only can bear axial compressive load, any axial tension, radial carrying and carrying inequality all will cause screw-rod structure to lose efficacy; 2., in big bang, the workplace of waving greatly, easily topple over unstability, cause working stability to decline; 3. engaging-in engaging mechanism (guidance system) structure of correspondence is very complicated, and cost is higher; 4. the driving mode of correspondence is single, is difficult to tackle operating mode complicated and changeable; 5. lack corresponding pre-pressing structure, easily cause engagement to loosen and lost efficacy.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical problem existed for prior art, the invention provides a kind of simple and compact for structure, with low cost, easy and simple to handle, dynamic combined screw that performance is good, applied widely and the guidance system for this dynamic combined screw.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of dynamic combined screw, comprises lock catch type cored screw structure, described lock catch type cored screw structure by support helix sheet and connect screw piece radially each other snap close formed;
Described support helix sheet is the uniform section sheet that a depth of section is greater than cross-sectional width, and on this uniform section sheet apart from lower edges one fixed width place, the equally spaced positioning hole offering two groups of rectangles;
Described connection screw piece is the uniform section sheet that a depth of section is less than cross-sectional width, is distributed with one group of locating tooth equally spacedly along this uniform section sheet side, and the position of described locating tooth is corresponding with the position of positioning hole on described support helix sheet.
Further improvement as screw of the present invention:
One group in the positioning hole of described two groups of rectangles near upper edge, another group is near lower edge, and two groups of positioning holes of vertically limit distribution are in shape symmetrically, and distance lower edges width is symmetry equivalent and can not be zero.
The shape of described locating tooth, structure, size are mated with positioning hole.
The present invention further provides a kind of guidance system being used for realizing above-mentioned screw combination, comprise base assembly, hollow column and driven unit, described hollow column is arranged at the inside of base assembly, hollow column arranges along two helixes the circular hole of two groups of discrete distributions respectively, guide roller is equiped with respectively in described circular hole, radially be respectively arranged with three equidistant rectangular openings in the downside of hollow column, be equiped with the driving inner core connecting guiding device respectively.
Further improvement as guidance system of the present invention:
Described two groups of guide rollers are greater than the thickness of support helix sheet along tangent to helix distance, the circular hole spacing of upside is sparse, and lower mother rib lateral rotundum arrangement is comparatively tight.
Described base assembly comprises flat base and cylindric base, and described cylindric floor installation is on flat base.
Described driven unit comprises the chain type driver part, internal drive motor and the manual fine-tuning driver part that are connected with driving inner core respectively.
The edge of described driving inner core is provided with engagement pre-pressing structure.
Compared with prior art, the invention has the advantages that: the present invention combines two groups of separated spiral steel discs by the upper saw pulley arranging Spiral distribution on hollow cylinder, form radial lock catch type location keying structure realize cored screw node configuration by the positioning hole that two groups of spiral steel discs are arranged, locating tooth structure, and make configuration solid and reliable owing to arranging engagement pre-pressing structure.This device bearing capacity is more excellent, can bear radial direction, and thrust load and non-uniform load, can be applicable to complex working condition good stability, and pretension is firm, and guiding process simplification reduces costs, and raises the efficiency.Greatly optimize existing dynamic combined screw, have very strong practicability.
Accompanying drawing explanation
Fig. 1 is the structural representation of dynamic combined screw of the present invention.
Fig. 2 is the structural principle schematic diagram after dynamic combined screw of the present invention is taken apart.
Fig. 3 is the structural representation after the present invention launches.In figure, (a) part is for connecting the plan structure schematic diagram of screw piece and support helix sheet before being connected; B () part is for connecting the plan structure schematic diagram of screw piece and support helix sheet after being connected; C () and (d) part is for connecting the main TV structure schematic diagram of screw piece before being connected.
Fig. 4 is the main TV structure principle schematic of guidance system of the present invention in application example.
Fig. 5 is the side-looking structural principle schematic diagram of guidance system of the present invention in application example.
Fig. 6 is lock catch type cored screw structure and the structural representation engaging pre-pressing structure and coordinate in guidance system of the present invention.
Marginal data:
1, lock catch type cored screw structure; 2, support helix sheet; 3, screw piece is connected; 4, positioning hole; 5, locating tooth; 6, flat base; 7, cylindric base; 8, hollow column; 9, guide roller; 10, inner core is driven; 11, protecting sheathing; 12, chain type driver part; 13, manual fine-tuning driver part; 14, internal drive motor; 15, pre-pressing structure is engaged.
Embodiment
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As shown in Figure 1, Figure 2 and Figure 3, dynamic combined screw of the present invention, comprise lock catch type cored screw structure 1, this lock catch type cored screw structure 1 by support helix sheet 2 and connect screw piece 3 radially each other snap close formed, support helix sheet 2 adopts engagement type design with connecting between screw piece 3.
Support helix sheet 2 is the uniform section sheet (as steel disc) that a depth of section is greater than cross-sectional width, and on this uniform section sheet apart from lower edges one fixed width place, the equally spaced positioning hole 4 offering two groups of rectangles, near upper edge one group, near lower edge one group.Vertically two groups of positioning holes 4 of limit distribution are in shape symmetrically, and distance lower edges width is symmetry equivalent and can not be zero.
Connecting screw piece 3 is the uniform section sheet (as steel disc) that a depth of section is less than cross-sectional width, one group of locating tooth 5 is distributed with equally spacedly along this uniform section sheet side, the position of this locating tooth 5 is corresponding with the position of positioning hole 4 on support helix sheet 2, profile is corresponding with the shape of positioning hole 4 (being rectangle in this example) also, the structure matching of size and positioning hole 4.
First, connecting screw piece 3 is form uniform pitch, equal diameter screw piece (as steel disc) by the effect that screws of guidance system; Then, connecting screw piece 3 radially inserts in the positioning hole 4 of support helix sheet 2 by locating tooth 5 structure of self again, and firm lock catch type meshing engagement structure is formed under the pretension effect of side direction pre-pressing structure, synchronous drive support helix sheet 2 realizes uniform pitch, equal diameter motion, finally realizes lock catch type cored screw structure 1.
As shown in Figure 4, Figure 5 and Figure 6, the guidance system that the present invention is used for realizing connection screw piece 3 effect that screws comprises base assembly, hollow column 8 and driven unit, hollow column 8 is arranged at the inside of base assembly, hollow column 8 arranges along two specific helixes the circular hole of two groups of discrete distributions respectively, be equiped with guide roller 9 respectively in circular hole, guide roller 9 can adopt class cylinder hollow roller bearing structure or other types roller structure according to actual needs.Two groups of guide rollers 9 are along the thickness of tangent to helix distance slightly larger than support helix sheet 2, and the circular hole spacing of upside is sparse, and lower mother rib lateral rotundum arrangement is comparatively tight.Certainly can understand, concrete distribute spacing, pitch, quantity all can be arranged according to driving demand, and the guiding wheels of general upside arrange the height of two pitch, amount to 8, are used for responsible direction controlling; Downside also arranges two pitch height, amounts to 24, is used for responsible power guid.
Base assembly inside is provided with a hollow column 8, and is radially respectively arranged with three equidistant rectangular openings in the downside of hollow column 8, is equiped with the driving inner core 10 connecting guiding device respectively.Realized respectively and the connection of chain type driver part 12 with manual fine-tuning driver part 13 along driving inner core 10 by protecting sheathing 11.Meanwhile, the installation on the downside of hollow column 8 is stablized in cylindrical structure, is provided with internal drive motor 14, can realize the driving of hollow column 8 inside.In the present embodiment, also driving the edge of inner core 10 that engagement pre-pressing structure 15 is installed further, by carrying out radial extruding with guide roller 9 pairs of support helix sheets 2 of elastic structure, pressure is applied to support helix sheet 2 and connection screw piece 3, make the effectively pretension engagement of locating tooth 5 and positioning hole 4, to realize the accurate tight configuration of lock catch type meshing engagement structure.
In the present embodiment, base assembly comprises flat base 6 and cylindric base 7, and cylindric base 7 is installed on flat base 6, can conveniently install, and ensures chain motor support base and cylindric base 7 in one plane.
Working principle: external chain type driver part 12, built-in internal drive motor 14 and manual fine-tuning driver part 13 3 kinds of driving mode can be adopted.First, must the complete lock catch type cored screw structure 1 of manual installation one section engagement.When internal drive motor 14 drives driving inner core 10 to rotate (or manual drives), drive inner core 10 will drive hollow column 8 synchronous rotary.Due to the synchronous rotary that the helix of guide roller 9 is arranged, make the distich of guiding wheels connect screw piece 3 and have the lifting effect of moving vertically, prevent simultaneously guide roller 9 with connect to occur between screw piece 3 to wear and tear stuck, guide roller 9 also rotates along its center axis, downside guide roller 9 is responsible for providing power, upside guide roller 9 is responsible for direction controlling, prevents connecting screw piece 3 and occurs skew, fold.
In the spiralling process of connection screw piece 3, because the support helix sheet 2 pulling original vortex-like line to place synchronously is realized spiral motion by the snap action of locating tooth 5.Utilize engagement pre-pressing structure 15 can realize support helix sheet 2 to engage with connection the tight of screw piece 3, and then form lock catch type cored screw structure 1.
If motor continues to rotate, lock catch type cored screw structure 1 will constantly raise.When motor counterrotating, the guiding wheels of spiral of Archimedes distribution are become to screw out forcing the locating tooth 5 connecting screw piece 3 from the positioning hole 4 of support helix sheet 2, realize lock catch type structure to be separated, lock catch type cored screw structure 1 completes destructing, respectively again stored in deposit position before.This action constantly back and forth, just constitute the working procedure of whole dynamic combined transmission device.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technological schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (5)
1. a dynamic combined screw, is characterized in that: comprise lock catch type cored screw structure (1), and described lock catch type cored screw structure (1) is by support helix sheet (2) and connect screw piece (3) radially snap close is formed each other;
Described support helix sheet (2) is the uniform section sheet that a depth of section is greater than cross-sectional width, and on this uniform section sheet apart from lower edges one fixed width place, the equally spaced positioning hole (4) offering two groups of rectangles;
Described connection screw piece (3) is the uniform section sheet that a depth of section is less than cross-sectional width, be distributed with one group of locating tooth (5) equally spacedly along this uniform section sheet side, the position of described locating tooth (5) is corresponding with the position of the upper positioning hole (4) of described support helix sheet (2);
The shape of described locating tooth (5), structure, size are mated with positioning hole (4).
2. dynamic combined screw according to claim 1, it is characterized in that: one group in the positioning hole (4) of described two groups of rectangles near upper edge, another group is near lower edge, vertically two groups of positioning holes (4) of limit distribution are in shape symmetrically, and distance lower edges width is symmetry equivalent and can not be zero.
3. one kind be used in claim 1 ~ 2 described in any one screw realize combination guidance system, it is characterized in that, comprise base assembly, hollow column (8) and driven unit, described hollow column (8) is arranged at the inside of base assembly, hollow column (8) arranges along two helixes the circular hole of two groups of discrete distributions respectively, guide roller (9) is equiped with respectively in described circular hole, radially be respectively arranged with three equidistant rectangular openings in the downside of hollow column (8), be equiped with the driving inner core (10) connecting guiding device respectively; Described two groups of guide rollers (9) are greater than the thickness of support helix sheet (2) along tangent to helix distance, the circular hole spacing of upside is sparse, and lower mother rib lateral rotundum arrangement is comparatively tight; The edge of described driving inner core (10) is provided with engagement pre-pressing structure (15).
4. guidance system according to claim 3, is characterized in that, described base assembly comprises flat base (6) and cylindric base (7), and described cylindric base (7) is installed on flat base (6).
5. guidance system according to claim 3, is characterized in that, described driven unit comprises the chain type driver part (12), internal drive motor (14) and the manual fine-tuning driver part (13) that are connected with driving inner core (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386239.2A CN103453100B (en) | 2013-08-30 | 2013-08-30 | Dynamic combined screw and the guidance system for this dynamic combined screw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386239.2A CN103453100B (en) | 2013-08-30 | 2013-08-30 | Dynamic combined screw and the guidance system for this dynamic combined screw |
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| Publication Number | Publication Date |
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| CN103453100A CN103453100A (en) | 2013-12-18 |
| CN103453100B true CN103453100B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310386239.2A Active CN103453100B (en) | 2013-08-30 | 2013-08-30 | Dynamic combined screw and the guidance system for this dynamic combined screw |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112006303A (en) * | 2019-05-28 | 2020-12-01 | 关隆股份有限公司 | Bean drying cylinder and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986000Y (en) * | 2006-11-20 | 2007-12-05 | 朱清华 | Winding ball screw rod |
| CN101701619A (en) * | 2009-11-18 | 2010-05-05 | 中国人民解放军国防科学技术大学 | Dynamically-combined helical driving device |
| CN202520896U (en) * | 2012-02-17 | 2012-11-07 | 信豪健康器材股份有限公司 | Combined cross screw rod |
-
2013
- 2013-08-30 CN CN201310386239.2A patent/CN103453100B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986000Y (en) * | 2006-11-20 | 2007-12-05 | 朱清华 | Winding ball screw rod |
| CN101701619A (en) * | 2009-11-18 | 2010-05-05 | 中国人民解放军国防科学技术大学 | Dynamically-combined helical driving device |
| CN202520896U (en) * | 2012-02-17 | 2012-11-07 | 信豪健康器材股份有限公司 | Combined cross screw rod |
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| Publication number | Publication date |
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| CN103453100A (en) | 2013-12-18 |
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