CN202864790U - Crown block lower limiting device - Google Patents
Crown block lower limiting device Download PDFInfo
- Publication number
- CN202864790U CN202864790U CN 201220475737 CN201220475737U CN202864790U CN 202864790 U CN202864790 U CN 202864790U CN 201220475737 CN201220475737 CN 201220475737 CN 201220475737 U CN201220475737 U CN 201220475737U CN 202864790 U CN202864790 U CN 202864790U
- Authority
- CN
- China
- Prior art keywords
- wire rope
- drive motor
- crown block
- rope drum
- motor
- 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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- Control And Safety Of Cranes (AREA)
Abstract
The utility model relates to a crown block lower limiting device, belongs to the technical field of crown block control devices, and aims to provide the crown block lower limiting device capable of preventing a wire rope from warping. The technical scheme includes that the crown block lower limiting device mainly comprises a driving motor, a wire rope drum, a wire rope, a lifting hook and a motor control cabinet, wherein the driving motor is coaxially connected with the wire rope drum, one end of the wire rope twines on the wire rope drum, the lifting hook is fixed at the other end of the wire rope, the motor control cabinet is electrically connected with the driving motor to control motions of the driving motor, a limiting switch is installed on the lower portion of the wire rope route tail end of the wire rope drum, and a signal output end of the limiting switch is connected with a descending control circuit of the driving motor in the motor control cabinet. The crown block lower limiting device is suitable for various crown block application situations.
Description
Technical field
The utility model overhead traveling crane lower caging device belongs to the control device of crown block technical field.
Background technology
Overhead traveling crane plays irreplaceable vital function in producing and transporting; most overhead traveling crane all is complete equipment; but overhead traveling crane has a fatal protection defective: when maloperation or apparatus failure; the reverse warp of wire reel meeting; when the wire reel warp; all electrical equipment position limitation protections are ineffective; and the operative employee is not easy to discover; generally also can operate by normal circumstances, particularly in the workplace of some bad visibilities, such as slag bath; high-altitude furnace roof etc.; thereby so that steel wire snaps; machinery decreases the ring accident and occurs; in smelter, the lifting weight-lifting equipment occurs ten thousand/ accident, consequence all cannot be imagined.
The utility model content
The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: a kind of overhead traveling crane control device for lower limited positions that can prevent the steel rope warp is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the overhead traveling crane lower caging device, overhead traveling crane mainly includes drive motor, wire rope drum, steel rope, suspension hook and motor controlling cabinet, described drive motor links to each other with wire rope drum is coaxial, one end of described steel rope is wrapped on the wire rope drum, the other end of steel rope is fixed with suspension hook, and motor controlling cabinet is electrically connected the action of control drive motor with drive motor; The steel rope stroke terminal bottom of described wire rope drum is equipped with limit switch, and the signal output part of described limit switch links to each other with the control loop for descending of drive motor in the motor controlling cabinet.
Be provided with reductor between described drive motor and the wire rope drum.
Described limit switch is travel switch or approach switch.
The beneficial effect that the utility model compared with prior art has is: the utility model can be when steel rope drains soon, cut off the decline loop of drive motor, stop drive motor action, prevent the steel rope warp, strong protection the safety of overhead traveling crane and operating personal; Whole apparatus structure is succinct, and is easy for installation, and economic benefit is high, and is practical.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing:
Fig. 1 is structural representation of the present utility model;
Among the figure: 1 is that drive motor, 2 is that wire rope drum, 3 is that steel rope, 4 is that suspension hook, 5 is that limit switch, 6 is reductor.
The specific embodiment
As shown in Figure 1, the utility model overhead traveling crane lower caging device, overhead traveling crane mainly includes drive motor 1, wire rope drum 2, steel rope 3, suspension hook 4 and motor controlling cabinet, described drive motor 1 and 2 coaxial linking to each other of wire rope drum, be provided with reductor 6 between drive motor 1 and the wire rope drum 2, one end of described steel rope 3 is wrapped on the wire rope drum 2, and the other end of steel rope 3 is fixed with suspension hook 4, and motor controlling cabinet is electrically connected 1 action of control drive motor with drive motor 1.
The steel rope 3 stroke terminal bottoms of described wire rope drum 2 are equipped with limit switch 5, limit switch 5 can be installed on the support of drive motor 1, limit switch 5 can adopt travel switch or approach switch, and the signal output part of limit switch 5 links to each other with the control loop for descending of drive motor 1 in the motor controlling cabinet.
When overhead traveling crane need to descend suspension hook 4, drive motor 1 drives wire rope drum 2 and decontrols steel rope 3, steel rope 3 circle circle on wire rope drum 2 is peeled off, when limit switch 5 is sensed last a few circle steel rope 3 and is put down, send a signal to the control loop for descending of drive motor 1, control loop is cut off the electricity supply, cause that operating personal notes, with regard to having avoided steel rope 3 to drain the problem that makes progress again behind the warp, played the effect of lower limit like this, and this limit signal point derives from the true action of steel rope 3, the situation that can not have misleading or distortion, particularly in the workplace of some bad visibilities, such as slag bath, high-altitude furnace roofs etc. have been avoided the generation of accident.
Above-mentioned limit switch 5 has adopted one, for the wider overhead traveling crane of some wire rope drums 2, can adopt two or more limit switches 5, is separately positioned on the bottom twice of wire rope drum 2, has so just guaranteed the collection of signal; In the control loop of drive motor 1, the signal of limit switch 5 can be accessed in the down relay control loop, can cut off accurately drive motor 1 power supply like this, and not affect the uphill process of drive motor 1.
Claims (3)
1. overhead traveling crane lower caging device, overhead traveling crane mainly includes drive motor (1), wire rope drum (2), steel rope (3), suspension hook (4) and motor controlling cabinet, described drive motor (1) and coaxial linking to each other of wire rope drum (2), one end of described steel rope (3) is wrapped on the wire rope drum (2), the other end of steel rope (3) is fixed with suspension hook (4), and motor controlling cabinet is electrically connected control drive motor (1) action with drive motor (1); It is characterized in that: steel rope (3) the stroke terminal bottom of described wire rope drum (2) is equipped with limit switch (5), and the signal output part of described limit switch (5) links to each other with the control loop for descending of drive motor (1) in the motor controlling cabinet.
2. overhead traveling crane lower caging device according to claim 1 is characterized in that: be provided with reductor (6) between described drive motor (1) and the wire rope drum (2).
3. overhead traveling crane lower caging device according to claim 1 and 2, it is characterized in that: described limit switch (5) is travel switch or approach switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475737 CN202864790U (en) | 2012-09-18 | 2012-09-18 | Crown block lower limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220475737 CN202864790U (en) | 2012-09-18 | 2012-09-18 | Crown block lower limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202864790U true CN202864790U (en) | 2013-04-10 |
Family
ID=48031530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220475737 Expired - Fee Related CN202864790U (en) | 2012-09-18 | 2012-09-18 | Crown block lower limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202864790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104974A (en) * | 2021-10-22 | 2022-03-01 | 天津一汽丰田汽车有限公司 | Warning device for crane sling, control method, terminal, storage medium and application |
-
2012
- 2012-09-18 CN CN 201220475737 patent/CN202864790U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104974A (en) * | 2021-10-22 | 2022-03-01 | 天津一汽丰田汽车有限公司 | Warning device for crane sling, control method, terminal, storage medium and application |
| CN114104974B (en) * | 2021-10-22 | 2023-09-19 | 天津一汽丰田汽车有限公司 | Crown block lifting appliance warning device, control method, terminal, storage medium and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20130918 |