CN101462675B - Screw rod positioning device of elevator - Google Patents
Screw rod positioning device of elevator Download PDFInfo
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- CN101462675B CN101462675B CN2008103055871A CN200810305587A CN101462675B CN 101462675 B CN101462675 B CN 101462675B CN 2008103055871 A CN2008103055871 A CN 2008103055871A CN 200810305587 A CN200810305587 A CN 200810305587A CN 101462675 B CN101462675 B CN 101462675B
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- screw rod
- back plate
- gear
- positioning device
- radial bearing
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Abstract
The invention relates to a screw rod positioning mechanism for a hoisting machine. The accuracy of verticality of a screw rod in a pipe body of the hoisting machine is greatly improved by setting axial and radial positioning at the input end of the screw rod, so as to improve the jacking efficiency of the hoisting machine, prolong the service life and improve the convenience of operation.
Description
Technical field
The present invention relates to a kind of small-sized hand-operated formula gig, especially relate to a kind of screw rod positioning device of gig.
Background technology
For adopting the lifting mechanism that comprises jacking sleeve that promotes by screw rod to make the gig of the small-sized hand-operated formula of rigid top act, belong to a kind of jacking machinery, be mainly used in the lifting and the conveying of various weights, it also has comparatively widely in daily life uses; For this design of mini manual type gig, the propulsive effort that screw rod promotes lifting mechanism comes from input shaft gear-driven with it, screw rod rotates under the transmission of input shaft, thereby does dipping and heaving at drive lifting mechanism under the screw flight effect in the elevator body; At present, the back plate that the gear end of screw rod is provided with is not connected with the elevator body, be mainly used in unidirectional spacing so that gear keeps the ingear distance, avoid screw gear being out of gear from the input shaft, therefore, screw rod depends on cooperating of lifting mechanism and elevator inboard wall of tube body at the elevator internal diameter of tube body to the location; Since screw rod axially on lifting mechanism and elevator inboard wall of tube body contact distance shorter, therefore, this mode that only relies on lifting mechanism to do radial location, make that the locating effect of screw rod in the elevator body is not good, be in a kind of active state, cause in the use variation range of squareness bigger, make lifting mechanism and elevator inboard wall of tube body form bigger friction thus, make elevator jacking efficient reduce, the wearing and tearing of lifting mechanism and elevator inboard wall of tube body also strengthen thereupon, thereby influence service life, simultaneously, this friction also makes the user need increase operating force, causes operation inconvenience.
Summary of the invention
The present invention mainly be solve the locating effect of existing in prior technology screw rod in the elevator body not good and cause jacking efficient not good, influence service life, operate technical matterss such as not nimble, a kind of screw rod positioning device of gig is provided.A kind of screw rod positioning device of gig, it is by being provided with at the screw rod input end axially and radial location, make the squareness precision of screw rod in the elevator body be greatly improved, thus improved elevator jacking efficient, prolonged service life, improved operation convenience.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: the screw rod positioning device of a kind of gig of the present invention, comprise hollow tube body and input shaft and screw rod provided thereon, input shaft and screw rod are vertical mutually and be in transmission connection by the bevel-gear sett formation, described body internal fixation has back plate, and this back plate middle part is provided with through hole and is sheathed on outside the screw rod by this through hole; Back plate is provided with the screw rod periphery near a side of gear and constitutes the radial bearing that is rotationally connected, opposite side be the plane and be provided with screw rod on boss constitute the surface bearing that is rotationally connected; Screw rod constitutes radial location by radial bearing, by surface bearing, radial bearing and the gear formation axial location of the back plate both sides that are placed in.Because back plate is fixed in body, therefore constitute bearing bonded assembly screw rod with back plate, formed radial location, this locate mode, the accuracy of positioning height, make the gear and the input shaft gear of screw rod keep engagement preferably, the lifting mechanism of screw flight transmission also can be done auxiliary radially spacing for screw rod in body simultaneously, therefore, the squareness precision of screw rod in body is higher, avoid the screw thread transmission to cooperate the bigger friction force of generation because screw rod squareness precision is not enough, reducing lifting structure and body does not cause both to produce bigger force of sliding friction because of screw rod squareness precision is high yet, the screw thread driving efficiency of screw rod and lifting mechanism is strengthened, also make the user save the operation input force, improved the comfort feature of operation; The surface bearing both sides directly or indirectly are resisted against boss and the back plate on the screw rod respectively, thereby form screw rod unidirectional spacing with respect to back plate in the axial direction, at the back plate opposite side, gear on the screw rod is fixed on the screw rod body of rod, after this gear is fixing, can constitute the unidirectional axial limiting of screw rod at the back plate opposite side with radial bearing, the unidirectional spacing direction of the screw rod of back plate both sides is opposite, makes screw rod realize axial location; This axial location mode, the location is reliable, and axial carrying capacity is strong, and gearing friction power is little; This structure, rational in infrastructure, make simply, have long service life
The Joint strenght of back plate and body, can influence screw rod provides preferable harmony, and as preferably, the fixed form of described back plate and body is welding.This mode is easy to make, and connects reliable.
In order to improve Joint strenght, as preferably, described back plate is provided with the groove that radial bearing is installed.The sidewall of groove and bottom surface constitute the transition support of the radial and axial location of screw rod respectively as radial bearing.
For ease of installing and cog the diameter clearance between sidewall and the radial bearing of adjusting control screw rod,, be provided with packing ring between described radial bearing and the gear face as preferably.
Therefore, that the present invention has is rational in infrastructure, be easy to characteristics such as making, especially has higher jacking efficient, the beneficial effect in long service life, and rapid operation is easy to operate.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present invention.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: a kind of screw rod positioning device of gig, comprise hollow tube body 4 and input shaft 6 and screw rod 5 provided thereon, input shaft 6 and screw rod 5 is vertical mutually and be in transmission connection by bevel- gear sett 7,8 formations, body 4 internal fixation have back plate 2, and these back plate 2 middle parts are provided with through hole and are sheathed on outside the screw rod 5 by this through hole; Back plate 2 is provided with screw rod 5 peripheries near a side of gears 7 and constitutes the radial bearing 1 that is rotationally connected, opposite side be the plane and be provided with screw rod 5 on boss 51 constitute the surface bearing 3 that is rotationally connected; Screw rod 5 constitutes radial location by radial bearing 1, by surface bearing 3, radial bearing 1 and the gear 7 formation axial location of back plate 2 both sides that are placed in.Back plate 2 is welding with the fixed form of body 4.Back plate 2 is provided with the groove 21 that radial bearing 1 is installed.Be provided with packing ring 9 between radial bearing 1 and gear 7 end faces.
The foregoing description is to explanation of the present invention, is not limitation of the invention, any structure after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (5)
1. the screw rod positioning device of a gig, comprise hollow tube body (4) and input shaft (6) and screw rod (5) provided thereon, input shaft (6) also is in transmission connection by bevel-gear sett (7,8) formation with screw rod (5) is vertical mutually, it is characterized in that: described body (4) internal fixation has back plate (2), and this back plate (2) middle part is provided with through hole and is sheathed on outside the screw rod (5) by this through hole; Back plate (2) is provided with screw rod (5) periphery near a side of gear (7) and constitutes the radial bearing (1) that is rotationally connected, opposite side be the plane and be provided with screw rod (5) on the surface bearing (3) that is rotationally connected of boss (51) formation; Screw rod (5) constitutes radial location by radial bearing (1), by surface bearing (3), radial bearing (1) and gear (7) the formation axial location of the back plate that is placed in (2) both sides.
2. the screw rod positioning device of a kind of gig according to claim 1 is characterized in that: described back plate (2) is welding with the fixed form of body (4).
3. the screw rod positioning device of a kind of gig according to claim 1 and 2 is characterized in that: described back plate (2) is provided with the groove (21) that radial bearing (1) is installed.
4. the screw rod positioning device of a kind of gig according to claim 1 and 2 is characterized in that: be provided with packing ring (9) between described radial bearing (1) and gear (7) end face.
5. the screw rod positioning device of a kind of gig according to claim 3 is characterized in that: be provided with packing ring (9) between described radial bearing (1) and gear (7) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103055871A CN101462675B (en) | 2008-11-17 | 2008-11-17 | Screw rod positioning device of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103055871A CN101462675B (en) | 2008-11-17 | 2008-11-17 | Screw rod positioning device of elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101462675A CN101462675A (en) | 2009-06-24 |
| CN101462675B true CN101462675B (en) | 2011-04-27 |
Family
ID=40803506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103055871A Active CN101462675B (en) | 2008-11-17 | 2008-11-17 | Screw rod positioning device of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101462675B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029674A1 (en) * | 1996-12-25 | 1998-07-09 | Smc Kabushiki Kaisha | Electric actuator |
| CN2423448Y (en) * | 2000-03-15 | 2001-03-14 | 陈鼎凌 | Double-action driving device |
| CN2708041Y (en) * | 2004-07-06 | 2005-07-06 | 郭健胜 | Screw riser with clearance compensation function |
| CN1821620A (en) * | 2005-02-18 | 2006-08-23 | 徐众 | Self position limit linear actuator |
| CN201301195Y (en) * | 2008-11-17 | 2009-09-02 | 宁波天益齿轴齿轮有限公司 | Screw positioning mechanism of elevator |
-
2008
- 2008-11-17 CN CN2008103055871A patent/CN101462675B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029674A1 (en) * | 1996-12-25 | 1998-07-09 | Smc Kabushiki Kaisha | Electric actuator |
| CN2423448Y (en) * | 2000-03-15 | 2001-03-14 | 陈鼎凌 | Double-action driving device |
| CN2708041Y (en) * | 2004-07-06 | 2005-07-06 | 郭健胜 | Screw riser with clearance compensation function |
| CN1821620A (en) * | 2005-02-18 | 2006-08-23 | 徐众 | Self position limit linear actuator |
| CN201301195Y (en) * | 2008-11-17 | 2009-09-02 | 宁波天益齿轴齿轮有限公司 | Screw positioning mechanism of elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101462675A (en) | 2009-06-24 |
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