CN203548769U - Speed reducer of lifting device - Google Patents
Speed reducer of lifting device Download PDFInfo
- Publication number
- CN203548769U CN203548769U CN201320759770.5U CN201320759770U CN203548769U CN 203548769 U CN203548769 U CN 203548769U CN 201320759770 U CN201320759770 U CN 201320759770U CN 203548769 U CN203548769 U CN 203548769U
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- China
- Prior art keywords
- speed reducer
- worm
- lifting device
- gear
- overload protection
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- Withdrawn - After Issue
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Abstract
The utility model provides a speed reducer of a lifting device. The speed reducer of the lifting device integrates with the function of overload protection, the function of stroke control and the function of manual input. A safe load is set through an adjusting screw rod. When output torque exceeds the set safe load, axial displacement happens to a worm to squeeze a spring, a spring sleeve touches an overload protection safety switch, and output is stopped; when an output shaft of the speed reducer of the lifting device is lifted to the set stroke position, a stop lever on a lead screw touches a stroke control switch, so that the function of stopping, the function of inverted output, the function of decelerating output and the like are achieved, under the condition of power failure or other specific conditions, the device can not be driven, and the lifting device can be driven manually through a hand crank.
Description
Technical field
The utility model relates to a kind of lifting device speed reducer, is a kind of Stroke Control that has, the lifting device speed reducer of torque overload protection and manual drives function.
Background technique
Lifting device speed reducer has deceleration and increases torque functions, in the transmission system of various machinery, is widely used.It has many advantages such as compact structure, easy for installation, long service life.There is following problem in common lifting device speed reducer: when overload work, easily causes driving mechanism and operation mechanism's damage, greatly reduce working life; There is no effective travel control device, can not circular flow, and lift stroke is accurate not, and reliability is not high; Can not normal operation under power-off or specified conditions.The disclosed novel overload protection arrangement of patent No. CN200720148982.4 and electric chain hoister thereof, be to utilize slip gear, and the frictional force of utilizing spring extruding to produce maintains transmission.This structure can not be set output loads, has narrow limitation; The disclosed lifting gear travel control device of patent No. CN200910266197.2, lift and corresponding controlling method are to utilize counter and encoder feedback signal to control stroke to controller.Its control procedure is more complicated, high expensive; The disclosed a kind of hand hoisting device of patent No. CN201020607277.8, is manually inputted by two half-coupling connecting handles, needs manually to connect two half-couplings and could realize manually input, and this structure is relatively loaded down with trivial details; Above three kinds of lifting device speed reducers all can not realize simultaneously overload protection, manually input and stroke control function.
Summary of the invention
The purpose of this utility model is to provide a kind of have overload protection, the manual lifting device speed reducer of input and stroke control function simultaneously.
Technical solution of the present utility model is:
A kind of lifting device speed reducer; comprise and promote gear worm lifting decelerator, lifting motor, main driving worm-gear speed reducer, screw mandrel and output shaft; lifting motor connects lifting worm-gear speed reducer; promote worm gear and the screw mandrel engagement of worm-gear speed reducer; screw mandrel bottom connects output shaft; output shaft is connected to the worm gear of main driving worm-gear speed reducer through spline, described lifting device speed reducer is provided with travel control device; The worm screw of described main driving worm-gear speed reducer connects overload protection safety installations; Described lifting gear worm speed reducer is provided with wind.
Further, described travel control device comprises upper stroke switch, lower stroke switch and pin, and pin is connected on screw mandrel, and pin touches the state of upper stroke switch and lower stroke switch while being difference between upper stroke switch and lower stroke switch.
Further; described overload protection safety installations comprises adjusting screw, spring, spring housing and Overload Protection switch; spring one end connects adjusting screw; spring the other end linking springs cover; spring housing is axially connected in the worm screw main shaft of main driving worm-gear speed reducer, and spring housing and Overload Protection switch are and contact or contact condition not.
Again further, described wind is axially connected in the worm screw that promotes worm-gear speed reducer.
Take after above technological scheme, the beneficial effect that the utility model reaches is:
(1) can set safe load by adjusting screw rod, when output torque surpasses the safe load of setting, worm screw generation axial displacement extrusion spring.Spring housing touch-control overload protection safety switch, output stops.Therefore speed reducer always works under safe load, be improved working life.
(2) when the output shaft of lifting device speed reducer is elevated to the travel position of setting, the pin on screw mandrel touches travel control switch, realizes and stops, oppositely exporting or the functions such as output of slowing down.Utilize Stroke Control can more accurately control lifting displacement.
(3) under power-off or other particular cases, machine cannot drive, and can utilize wind manual drives jacking equipment, and purposes is more extensive.
Accompanying drawing explanation
Fig. 1 is that the master that the utility model is implemented looks generalized section;
Fig. 2 is that generalized section is looked on the left side that model utility is implemented.
In figure: promote worm-gear speed reducer 1, lifting motor 2, main driving worm-gear speed reducer 3, overload protection safety installations 4, wind 5, upper stroke switch 6, pin 7, lower stroke switch 8, screw mandrel 9, output shaft 10, spring 11, spring housing 12, adjusting screw 13.
Embodiment
Below in conjunction with accompanying drawing, the utility model and embodiment are described in further detail.
Shown in Fig. 1, Fig. 2; a lifting device speed reducer, comprises and promotes worm-gear speed reducer 1, lifting motor 2, main driving worm-gear speed reducer 3, overload protection safety installations 4, wind 5, upper stroke switch 6, pin 7, lower stroke switch 8, screw mandrel 9, output shaft 10, spring 11, spring housing 12 and adjusting screw 13.
Described screw mandrel 9 is connected to the worm gear that promotes worm-gear speed reducer 1 by spline, lifting motor 2 or wind 5 are connected with driving the worm screw that promotes worm-gear speed reducer 1 respectively; Screw mandrel 9 bottoms are connected with output shaft 10, and described screw mandrel 9 heads connect pin 7, and screw mandrel 9 is elevated to while setting extreme limit of travel position, pin 7 touching upper stroke switch 6 or lower stroke switch 8, and lifting motor stops or rotating backward, and realizes Stroke Control.The worm gear of described main driving worm-gear speed reducer 3 and output shaft 10 are through spline joint; main driving worm-gear speed reducer 3 is provided with overload protection safety installations 4; described overload protection safety installations 4 comprises adjusting screw 13, spring 11, spring housing 12 and Overload Protection switch; spring 11 one end connect adjusting screw 13; spring 11 the other end linking springs covers 12; spring housing 12 is axially connected in the worm screw main shaft of main driving worm-gear speed reducer, and spring housing 12 and Overload Protection switch are and contact or contact condition not.
Adjusting screw on overload protection safety installations can be set safe load, during the running of lifting device speed reducer, when output loads exceeds safe load; worm shaft is to extrusion spring; spring is subjected to displacement, and the switch that spring housing touches on overload protection safety installations is realized output alarm, stops.
Claims (4)
1. a lifting device speed reducer; comprise and promote gear worm lifting decelerator, lifting motor, main driving worm-gear speed reducer, screw mandrel and output shaft; lifting motor connects lifting worm-gear speed reducer; promote worm gear and the screw mandrel engagement of worm-gear speed reducer; screw mandrel bottom connects output shaft; output shaft is connected to the worm gear of main driving worm-gear speed reducer through spline, it is characterized in that: described lifting device speed reducer is provided with travel control device; The worm screw of described main driving worm-gear speed reducer connects overload protection safety installations; Described lifting gear worm speed reducer is provided with wind.
2. a kind of lifting device speed reducer according to claim 1, it is characterized in that: described travel control device comprises upper stroke switch, lower stroke switch and pin, pin is connected on screw mandrel, and pin touches the state of upper stroke switch and lower stroke switch while being difference between upper stroke switch and lower stroke switch.
3. a kind of lifting device speed reducer according to claim 1; it is characterized in that: described overload protection safety installations comprises adjusting screw, spring, spring housing and Overload Protection switch; spring one end connects adjusting screw; spring the other end linking springs cover; spring housing is axially connected in the worm screw main shaft of main driving worm-gear speed reducer, and spring housing and Overload Protection switch are and contact or contact condition not.
4. a kind of lifting device speed reducer according to claim 1, is characterized in that: described wind is axially connected in the worm screw that promotes worm-gear speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759770.5U CN203548769U (en) | 2013-11-28 | 2013-11-28 | Speed reducer of lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759770.5U CN203548769U (en) | 2013-11-28 | 2013-11-28 | Speed reducer of lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548769U true CN203548769U (en) | 2014-04-16 |
Family
ID=50466890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759770.5U Withdrawn - After Issue CN203548769U (en) | 2013-11-28 | 2013-11-28 | Speed reducer of lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697133A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Speed reducer for lifting device |
| CN104353962A (en) * | 2014-11-04 | 2015-02-18 | 国家电网公司 | Axial movement device for welding of bus tube |
| CN104400266A (en) * | 2014-11-04 | 2015-03-11 | 国家电网公司 | Bracket device for welding bus tube |
-
2013
- 2013-11-28 CN CN201320759770.5U patent/CN203548769U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697133A (en) * | 2013-11-28 | 2014-04-02 | 江苏泰隆减速机股份有限公司 | Speed reducer for lifting device |
| CN103697133B (en) * | 2013-11-28 | 2016-01-13 | 江苏泰隆减速机股份有限公司 | A kind of lifting device speed reducer |
| CN104353962A (en) * | 2014-11-04 | 2015-02-18 | 国家电网公司 | Axial movement device for welding of bus tube |
| CN104400266A (en) * | 2014-11-04 | 2015-03-11 | 国家电网公司 | Bracket device for welding bus tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |