CN2373325Y - Device for ensuring lifting mechanism safety moving and braking - Google Patents
Device for ensuring lifting mechanism safety moving and braking Download PDFInfo
- Publication number
- CN2373325Y CN2373325Y CN 99214310 CN99214310U CN2373325Y CN 2373325 Y CN2373325 Y CN 2373325Y CN 99214310 CN99214310 CN 99214310 CN 99214310 U CN99214310 U CN 99214310U CN 2373325 Y CN2373325 Y CN 2373325Y
- Authority
- CN
- China
- Prior art keywords
- worm
- gear
- screw
- roller bearing
- screw 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a device for lifting mechanism safety moving and braking, which is characterized in that a rotary worm screw is driven by a motor through a connecting mechanism, and the worm screw drives a worm wheel, and furthermore, a rotary rope wheel which is coaxial with the worm wheel is driven by the worm screw so as to lead to the lifting of weight articles suspended on steel ropes. A transmission gear is fixed on a worm screw shaft, and a rotary screw rod is driven by a driving gear meshed with the transmission gear. A transmission pair is formed by the screw rod and a gear which is fixed on a worm wheel shaft, and axial directions of the screw rod are in a free state, and furthermore, a limit switch is arranged on the outer top part of both ends of the screw rod and extreme limit bulges are arranged on the upper part of the screw rod. When used, worm gear tooth are worn or the breakage of tooth is occurred, the mechanism can generate braking action so as to prevent accidents which are caused by the falling of suspended weight articles.
Description
The utility model relates to a kind of device that guarantees lifting mechanism safe operation, braking.
In the mechanical lifting device, use the equipment of worm reducer many, cause the situation of worm gear damage to mainly contain two kinds, (1) wheel odontotripsis, during the worm reducer operation, because the worm gear flank of tooth is continuous and the worm tooth-surface friction, the worm gear flank of tooth weares and teares gradually, when the gear teeth may wear to a certain degree, gear teeth cross section diminishes, and its mechanical property can not satisfy the requirement of normal operation; (2) break of gear tooth when the retarder overload cracks because of material creep gear teeth root, all can make the gear teeth snap.This tends to cause the accident.
The purpose of this utility model provides a kind of device that guarantees lifting mechanism safe operation, braking.
For achieving the above object, the utility model is taked following design plan: lifting mechanism is to drive a worm screw rotation by the tapered roller bearing support by motor by coupler or other bindiny mechanism, described worm drive one worm gear also drives the rope sheave rotation that be wound with lifting rope coaxial with worm gear, this axle makes the weight lifting that is suspended on the steel cable by the tapered roller bearing supporting.Fix a transmission gear on the worm shaft, transmission gear ingear one driven wheel drives leading screw rotation therewith, the gear that this leading screw and other are fixed on the worm-wheel shaft constitutes transmission, described leading screw is supported by a pair of cylindrical roller bearing, and axial location is in free state, there is limit switch its outside, top, two ends: there is limit spacing preiection at two ends on leading screw simultaneously, with a pair of spacing cylindrical roller bearing formation extreme displacement stop gear of supporting.During the lifting mechanism normal operation, leading screw and the rotation of worm screw constant speed, worm gear rotates simultaneously with the gear with leading screw formation transmission.Because of lead screw shaft to being in free state; so the mesh tooth face of screw gear pair does not bear pressure; its active flank does not produce wearing and tearing; when the worm gear flank of tooth produces wearing and tearing,, the longitudinal travel of leading screw is increased because the relative position of the active flank of worm couple and screw gear pair changes; when the tooth thickness wear of worm-gear toothing when being not enough to satisfy transmission and requiring; the displacement of leading screw will trigger the leading screw end and push up exterior limit switch, and the motor outage is shut down, and remind the user to check the replacing reductor.When worm gear generation broken teeth accident, the steel rope lifted weight will be dropped by gravity.The gear coaxial with worm gear will promote leading screw along its axial motion, and the two ends spacing preiection is touched mutually with spacing cylindrical roller bearing on the leading screw, and this gear is produced brake action.Rope sheave is stopped operating, prevent to lift the weight tenesmus and cause the accident.
The utility model simple structure, safe and reliable, can prevent from effectively to use the lifting mechanism of worm reducer to have an accident.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is worm couple, the secondary active flank corresponding relation of screw gear scheme drawing
Embodiment
As shown in Figure 1 and Figure 2, lifting mechanism is to drive worm screw 2 rotations by motor 1 by coupler, and this worm screw 2 drives the worm gear 3 that is fixed on the worm-wheel shaft 13 and drives rope sheave 4 rotations coaxial with worm gear, makes the weight lifting that is suspended on steel cable.Fix a transmission gear 5 on the axle by the worm screw 2 of tapered roller bearing 14 supporting, this gear 5 drives the gear 6 that is fixed on the lead screw shaft and drives leading screw 7 rotations, a leading screw 7 and a gear 8 constitute a transmission, gear 8 is fixed on the worm-wheel shaft 13, and worm-wheel shaft 13 is by tapered roller bearing 10 and cylindrical roller bearing 11 supportings.Leading screw 7 is by a pair of spacing cylindrical roller bearing 12 supportings.Axial location is in free state, and there is limit switch 9 its outside, top, two ends, and there is limit position projection 71 at two ends on leading screw, with a pair of spacing cylindrical roller bearing 12 formation extreme displacement stop gears of supporting.
If worm gear 3 flank of tooth 31 may wear to 31 ' position in the use; active flank will have a gap to exist between the worm and wheel; the worm gear gear coaxial with it rotates and will make screw mandrel strengthen axial displacement; when the tooth thickness wear of worm-gear toothing when being not enough to satisfy transmission and requiring; the displacement of leading screw will trigger the limit switch 9 outside the leading screw end, and the motor outage is shut down.
When the broken teeth accident takes place in worm gear 3, the steel cable lifted weight will be dropped by gravity, promoting leading screws 7 with the coaxial gear 8 of worm gear 3 moves along its axle, limit spacing preiection 71 on the leading screw 7 will be touched on spacing cylindrical roller bearing 12, spragging gear 8, rope sheave 4 is stopped the rotation, prevent that the weight tenesmus from having an accident.
Claims (1)
1, the safe operation of a kind of assurance lifting mechanism, the device of braking, it is characterized in that: lifting mechanism is to drive a worm screw rotation by the tapered roller bearing support by motor by bindiny mechanism, described worm drive one worm gear also drives the rope sheave rotation that be wound with lifting rope coaxial with worm gear, this axle is supported by tapered roller bearing, fix a transmission gear on the worm shaft, transmission gear ingear one driven wheel drives screw mandrel rotation therewith, the gear that this leading screw and other are fixed on the worm-wheel shaft constitutes transmission, described leading screw is supported by a pair of cylindrical roller bearing, and axial location is in free state, and there is limit switch its outside, top, two ends; There is limit spacing preiection at two ends on leading screw simultaneously, with a pair of spacing cylindrical roller bearing formation extreme displacement stop gear of supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214310 CN2373325Y (en) | 1999-06-22 | 1999-06-22 | Device for ensuring lifting mechanism safety moving and braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214310 CN2373325Y (en) | 1999-06-22 | 1999-06-22 | Device for ensuring lifting mechanism safety moving and braking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373325Y true CN2373325Y (en) | 2000-04-12 |
Family
ID=34006521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99214310 Expired - Fee Related CN2373325Y (en) | 1999-06-22 | 1999-06-22 | Device for ensuring lifting mechanism safety moving and braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373325Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896183A (en) * | 2014-03-04 | 2014-07-02 | 唐山开元机器人系统有限公司 | Small-resistance anti-stall lifting device with vertical shaft needing to move vertically |
| CN104548418A (en) * | 2015-01-21 | 2015-04-29 | 哈尔滨工程大学 | Rotary forest fire-fighting bomb delivery device |
-
1999
- 1999-06-22 CN CN 99214310 patent/CN2373325Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896183A (en) * | 2014-03-04 | 2014-07-02 | 唐山开元机器人系统有限公司 | Small-resistance anti-stall lifting device with vertical shaft needing to move vertically |
| CN103896183B (en) * | 2014-03-04 | 2016-08-24 | 唐山开元机器人系统有限公司 | A kind of vertical pivot moves up and down light resistance, stall proof lowering or hoisting gear |
| CN104548418A (en) * | 2015-01-21 | 2015-04-29 | 哈尔滨工程大学 | Rotary forest fire-fighting bomb delivery device |
| CN104548418B (en) * | 2015-01-21 | 2017-05-24 | 哈尔滨工程大学 | Rotary forest fire-fighting bomb delivery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |