CN204434176U - A kind of lifting device of crane with safety braking functions - Google Patents
A kind of lifting device of crane with safety braking functions Download PDFInfo
- Publication number
- CN204434176U CN204434176U CN201420763360.2U CN201420763360U CN204434176U CN 204434176 U CN204434176 U CN 204434176U CN 201420763360 U CN201420763360 U CN 201420763360U CN 204434176 U CN204434176 U CN 204434176U
- Authority
- CN
- China
- Prior art keywords
- crane
- drum shaft
- reel
- vehicle frame
- rotary encoder
- 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
Links
- 238000007667 floating Methods 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model belongs to crane field, particularly relate to a kind of lifting device of crane with safety braking functions for hoisting crane, comprise vehicle frame and be arranged on the motor on vehicle frame, described vehicle frame is also provided with reel by drum shaft, described motor is connected with reductor by floating axle, and drive drum shaft to rotate by reductor, described vehicle frame is also provided with the plate disc brake for braking reel and the rotary encoder for detecting drum shaft rotating speed, described plate disc brake is provided with the brake disc contacted with reel, described rotary encoder is arranged at one end of drum shaft, the utility model structure is simple, safe and reliable, can detect the rotating speed of drum shaft accurately and effectively, when there is the situation of falling fast in the weight lifted by crane, rotary encoder can effectively detect drum shaft rotating speed, and by PLC, plate disc brake is controlled, the rotation of restriction reel, thus effectively avoid the weight lifted by crane fall fast and damage.
Description
Technical field
The utility model belongs to crane field, particularly relates to a kind of lifting device of crane with safety braking functions for hoisting crane.
Background technology
Along with the development of national economy and the progress of science and technology, hoisting crane is more and more applied in the key areas such as Aeronautics and Astronautics, military project, electric power, metallurgy, chemical industry, due to the particularity of industry, just the reliability of the weight-lifting equipment work that it relates to and safety are had higher requirement.
At present, in the process of crane hanging component weight, damage because motor overspeed operation, brake failure, high speed shaft fracture, reducer gear fracture etc. situation on lifting mechanism causes the weight of lifting to fall fast, thus cause safety misadventure to happen occasionally at industry-by-industry.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and provides a kind of lifting device of crane with safety braking functions.
The technical scheme that the utility model adopts: a kind of lifting device of crane with safety braking functions, comprise vehicle frame and be arranged on the motor on vehicle frame, described vehicle frame is also provided with reel by drum shaft, described motor is connected with reductor by floating axle, and drive drum shaft to rotate by reductor, its feature exists: described vehicle frame is also provided with the plate disc brake for braking reel and the rotary encoder for detecting drum shaft rotating speed, described plate disc brake is provided with the brake disc contacted with reel, described rotary encoder is arranged at one end of drum shaft.
Described brake disc is positioned at a termination of reel.
Described reductor is also provided with drg.
The beneficial effects of the utility model: the utility model adopts the termination being positioned at reel on vehicle frame to arrange plate disc brake, actv. can be braked by reel, coordinate rotary encoder to detect drum speed simultaneously, in conjunction with PLC, when drum speed is higher than rated speed of rotation, rotary encoder effectively can detect and the data of detection are transferred to PLC, control plate disc brake power-off and band-type brake, the action of restriction reel group, finally can by the hand release on plate disc brake, weight pulsation-free is put down, actv. is avoided due to motor overspeed operation on lifting mechanism, brake failure, high speed shaft ruptures, reducer gear fracture etc. situation causes the weight of lifting fall fast and damage, simultaneously, its structure is simple, reliability and safety high.
Accompanying drawing explanation
Fig. 1 is constructional drawing of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of lifting device of crane with safety braking functions, comprise vehicle frame 1, with the motor 2 be fixedly mounted on vehicle frame 1, reductor 4, reel 6, the output shaft of motor 2 is connected with floating axle 3, motor 2 is connected with reductor 4 by floating axle 3, reductor is connected with the drum shaft 5 of reel 6, reductor is provided with drg 9, motor can drive reductor 4 by floating axle 3 thus band movable reel 6 rotates, vehicle frame is also installed with plate disc brake 7, plate disc brake 7 is near the left end of reel, the brake disc 10 of plate disc brake 7 is positioned at the left side of reel, at the left end of drum shaft 5, the rotary encoder 8 for detecting drum shaft rotating speed is installed.Can be detected the rotating speed of drum shaft 5 by rotary encoder 8, during use, rotary encoder is connected with PLC, when lifting mechanism hoisting heavy declines, because hoisting heavy is overweight, the reason such as frequency converter failure or maloperation causes Motor Over Speed to operate; Or the reason such as brake failure, high speed shaft fracture, cause hoisting heavy to exceed the speed limit to decline, the impulse singla detected is fed back to PLC by the rotary encoder being now installed at reel axle head, after PLC Treatment Analysis, if drum speed is higher than rated speed of rotation, PLC will send instruction and make plate disc brake power-off and band-type brake, the action of restriction reel group, finally by the hand release on plate disc brake, weight pulsation-free can be put down.
Claims (3)
1. one kind has the lifting device of crane of safety braking functions, comprise vehicle frame and be arranged on the motor on vehicle frame, described vehicle frame is also provided with reel by drum shaft, described motor is connected with reductor by floating axle, and drive drum shaft to rotate by reductor, its feature exists: described vehicle frame is also provided with the plate disc brake for braking reel and the rotary encoder for detecting drum shaft rotating speed, described plate disc brake is provided with the brake disc contacted with reel, and described rotary encoder is arranged at one end of drum shaft.
2. the lifting device of crane with safety braking functions according to claim 1, its feature exists: described brake disc is positioned at a termination of reel.
3. the lifting device of crane with safety braking functions according to claim 1, its feature exists: described reductor is also provided with drg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420763360.2U CN204434176U (en) | 2014-12-09 | 2014-12-09 | A kind of lifting device of crane with safety braking functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420763360.2U CN204434176U (en) | 2014-12-09 | 2014-12-09 | A kind of lifting device of crane with safety braking functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204434176U true CN204434176U (en) | 2015-07-01 |
Family
ID=53602072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420763360.2U Expired - Fee Related CN204434176U (en) | 2014-12-09 | 2014-12-09 | A kind of lifting device of crane with safety braking functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204434176U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069356A (en) * | 2016-11-18 | 2018-05-25 | 奥的斯电梯公司 | Retrofitting an elevator machine with primary and secondary braking |
| CN113415746A (en) * | 2021-06-29 | 2021-09-21 | 攀钢集团西昌钢钒有限公司 | Sliding tank detection method and sliding tank detection system |
| CN116425061A (en) * | 2023-04-06 | 2023-07-14 | 徐州建机工程机械有限公司 | Tower crane brake failure detection and protection method |
-
2014
- 2014-12-09 CN CN201420763360.2U patent/CN204434176U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108069356A (en) * | 2016-11-18 | 2018-05-25 | 奥的斯电梯公司 | Retrofitting an elevator machine with primary and secondary braking |
| US11377323B2 (en) | 2016-11-18 | 2022-07-05 | Otis Elevator Company | Retrofitting an elevator machine with primary and secondary braking |
| CN108069356B (en) * | 2016-11-18 | 2022-10-28 | 奥的斯电梯公司 | Retrofitting an elevator machine with primary and secondary braking |
| CN113415746A (en) * | 2021-06-29 | 2021-09-21 | 攀钢集团西昌钢钒有限公司 | Sliding tank detection method and sliding tank detection system |
| CN116425061A (en) * | 2023-04-06 | 2023-07-14 | 徐州建机工程机械有限公司 | Tower crane brake failure detection and protection method |
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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: 20150701 Termination date: 20161209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |