CN202754737U - Overload-prevention sensing device - Google Patents
Overload-prevention sensing device Download PDFInfo
- Publication number
- CN202754737U CN202754737U CN 201220307396 CN201220307396U CN202754737U CN 202754737 U CN202754737 U CN 202754737U CN 201220307396 CN201220307396 CN 201220307396 CN 201220307396 U CN201220307396 U CN 201220307396U CN 202754737 U CN202754737 U CN 202754737U
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- load power
- overload
- pulley
- bearing
- sensing device
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Abstract
An overload-prevention sensing device comprises a pulley, a bearing, a pulley shaft, a load power taking device and a yoke plate, wherein the pulley is installed on the bearing, the bearing is installed on the pulley shaft, the load power taking device is installed inside the pulley shaft, and the yoke plate is sleeved on the end portion of the load power taking device. A winding drum drives a steel wire rope to bear force, vibration and impact can be eliminated because of soft transmission between the pulley and the steel wire rope, and the load power taking device is not easy to damage. A transmission position is relatively close to the rear side, forcing bearing is relatively obvious, and high precision is produced; and the overload-prevention sensing device is small in mounting dimension and simple in structure.
Description
Technical field
The utility model relates to a kind of anti-overload sensing device of a kind of large gantry crane and high pedestal jib crane etc.
Background technology
Gauntry crane and span winch formula; and other kind hoisting crane such as twin beam overhead bridge crane equipment that is the shipbuilding enterprise indispensability; all devices adopted the transmitted load power takeoff in the past; because survey precision is not high; tend to appear in the situation of overload; weight-lifting equipment is not accomplished anti-overload protection function, the long-term distortion of using meeting affect girder and other steel structure.Improve now and optimize the load power takeoff, adopt direct power taking, avoided causing unnecessary error by other factors, realized the significantly raising of survey precision, guaranteed that crane facility can normally move, improved the service life of weight-lifting equipment, the user can reduce service expenditure greatly like this, saves cost.The load power takeoff is installed in sheave shaft inside, fixes by two locating clamp plates, and installation and maintenance are convenient, and wiring is also very convenient to be connect well.Owing to adopt this kind method, the load power takeoff can not be subject to outside impact and collision, and protection load power takeoff is not easy to damage, and saves the component wear maintenance cost.
The chief component of existing anti-overload sensing device is by cable drum, reel fix shaft, bearing seat, load power takeoff, limitation in height device, bearing brackett etc.The load power takeoff is installed on the bearing brackett, and when suspension hook was sling a weight, weight was by the steel rope tension stress, and steel rope is transferred to tension stress on the reel again, because the reel lay winding wire ropes is more, produces easily unbalance stress; Cable drum is larger, produces deadweight, and it is long to add steel rope, can produce larger error, and precision is not high; Installation dimension is more loaded down with trivial details, and complex structure is subjected to force transmission ratio complicated, can bring extra stressedly, and it is more serious to produce error ratio; In whole driving system, adopt between electrical motor and the reductor to be rigidly connected, also be rigidly connected between reductor and the reel simultaneously, electrical motor is in start-up course, and as easy as rolling off a log generation is vibrated, and causes that reel produces vibration accordingly.Install the load power takeoff in this position, the load power takeoff is along with the reel bearing produces mechanical vibration together, and precision is seriously impacted etc.Suspension hook uses the startup frequency ratio higher, uses in these conditions, and the load power takeoff damages easily.
Summary of the invention
The utility model purpose is: proposes a kind of anti-overload sensing device, is used for gauntry crane and span winch, and other kind hoisting crane such as twin beam overhead bridge crane.Can be used for the overweight equipment transformation of place in operation, save cost, it is convenient to transform, and can not affect the use of hoisting crane.
Technical solution of the present utility model is: a kind of anti-overload sensing device, comprise pulley, bearing, sheave shaft, load power takeoff and yoke plate, pulley is installed on the bearing, bearing is installed in again on the sheave shaft, the load power takeoff is installed in the sheave shaft, and yoke plate is enclosed within load power takeoff end.It is stressed that reel drives steel rope, because the soft transmission of transmission between pulley and the steel rope can be eliminated vibration and impact, the load power takeoff is not easy to damage.And after the transmission location comparison leans on, stressed clearer and more definite, produce very high precision; Installation dimension is smaller, and is relatively simple for structure.
Structure of the present utility model is optimized and is improved, and transform existing load power takeoff as direct power taking by indirect measurement, and apparatus measures is stressed evenly, non-jitter and impact, and protection load power takeoff is avoided damaging.It is more accurate that power taking is measured, and accuracy requirement improves greatly, maintain and replace load power takeoff more convenient and quicker.
Improvement of the present utility model is: traditional anti-overload sensing device installation site is changed into by the cable drum bearing be installed in the dead sheave axle; transform by the rubber tyre gantry crane design requirement; weight is subjected to pulling force by steel rope; the weight transmitting of weight to pulley; pulley and steel rope adopt and are flexible coupling; avoid shock and vibration; can not produce the stressed of mistake; and pulley can be the stressed sheave shaft that passes to; sheave shaft is stressed with anti-overload power takeoff, and this moment, anti-overload power taking was transferred to microprocessor or computing machine to the weight that measures by data line, and computing machine is by quick computing; control anti-overload protection, realize that hoisting crane normally operates to purpose.
The beneficial effects of the utility model are: with in the past weight-lifting equipment relatively, it is more accurate to weigh, protection girder and other steel structure are more reliable, structure is optimized, and maintains more convenient etc.Can be used for the overweight equipment transformation of place in operation, save cost, it is convenient to transform, and can not affect the application of hoisting crane; Allow simultaneously the maintainer keep in repair with convenient and swift, improved work efficiency, saved workman's labour cost, for enterprise brings very large benefit.
Description of drawings
Fig. 1 the utility model structural representation;
Fig. 2 is AA schematic cross-section among Fig. 1;
Fig. 3 is local enlarged diagram among Fig. 1.
Among the figure: 1 pulley, 2 bearings, 3 sheave shafts, 4 anti-overload power takeoffs, 5 locating clamp plates, 6 yoke plates.
The specific embodiment
Respectively 1 pulley, 3 sheave shafts, 4 anti-overload power takeoffs, 5 locating clamp plates etc. are made separately moulding with manufacture craft as requested, 2 bearings are purchased on request.Anti-overload power takeoff is the sensor device that adopts existing twist sheet (compliance voltage is directly proportional with torque magnitude), anti-overload power taking this moment is delivered to the weight that measures and on the prefabricated stand 2 bearings is being installed on 3 sheave shafts, will strictly control simultaneously installation relative size and position and reach the design accuracy requirement.
Finish above-mentioned after, pulley is installed, to strictly control simultaneously and relative size is installed and the position reaches the design accuracy requirement.Cover the yoke plate at two ends, insert anti-overload power takeoff, locating clamp plate is fixed on the card.Communication cable with special use is connected anti-overload power takeoff with small-size computer PC, realize communication function.Behind the whole device to be corrected, realize anti-overload protection function.
Claims (1)
1. prevent the overload sensing device for one kind, it is characterized in that comprising pulley, bearing, sheave shaft, load power takeoff and yoke plate, pulley is installed on the bearing, and bearing is installed in again on the sheave shaft, the load power takeoff is installed in the sheave shaft, and yoke plate is enclosed within load power takeoff end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307396 CN202754737U (en) | 2012-06-28 | 2012-06-28 | Overload-prevention sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307396 CN202754737U (en) | 2012-06-28 | 2012-06-28 | Overload-prevention sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202754737U true CN202754737U (en) | 2013-02-27 |
Family
ID=47733931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220307396 Expired - Fee Related CN202754737U (en) | 2012-06-28 | 2012-06-28 | Overload-prevention sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202754737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935896A (en) * | 2014-03-28 | 2014-07-23 | 广西柳工机械股份有限公司 | Automatic identification device and identification method for steel wire rope multiplying power of hoisting machinery |
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive function |
-
2012
- 2012-06-28 CN CN 201220307396 patent/CN202754737U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935896A (en) * | 2014-03-28 | 2014-07-23 | 广西柳工机械股份有限公司 | Automatic identification device and identification method for steel wire rope multiplying power of hoisting machinery |
| CN103935896B (en) * | 2014-03-28 | 2016-07-06 | 广西柳工机械股份有限公司 | Hoisting machinery steel wire rope multiplying power automatic identification equipment and recognition methods |
| CN107253679A (en) * | 2017-08-14 | 2017-10-17 | 浙江双鸟起重设备有限公司 | A kind of twin beams steel-wire rope type electric block with defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |