CN205634676U - Bridge crane hoisting mechanism with two -stage limit protection device - Google Patents
Bridge crane hoisting mechanism with two -stage limit protection device Download PDFInfo
- Publication number
- CN205634676U CN205634676U CN201620479064.9U CN201620479064U CN205634676U CN 205634676 U CN205634676 U CN 205634676U CN 201620479064 U CN201620479064 U CN 201620479064U CN 205634676 U CN205634676 U CN 205634676U
- Authority
- CN
- China
- Prior art keywords
- protection device
- pulley group
- limit switch
- hoisting mechanism
- limit protection
- 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
Abstract
The utility model relates to a bridge crane hoisting mechanism technical field provides a bridge crane hoisting mechanism with two -stage limit protection device very much, is equipped with two -stage limit protection device, and when hoisting mechanism shifted the heavy object, when reacing one -level extreme position, hook assembly was no longer ascending by limit switch A control, if limit switch A breaks down, hook assembly exceedes one -level extreme position to be continued to rise, and when reacing second grade extreme position, the weight bracket holds up the weight, triggers limit switch B, and control hook assembly no longer continues to rise, prevents the accident.
Description
Technical field
This utility model relates to bridge crane hoisting mechanism technical field, specifically provides one and has two-stage
The bridge crane hoisting mechanism of limit protection device.
Background technology
Along with iron and steel enterprise develops rapidly, rhythm of production is accelerated, and uses requirement more and more higher, closely in crane
Crane safety Frequent Accidents over Nian, causes injury greatly to production and personal safety.Affect crane peace
Full principal element is safety device aged deterioration, or limit switch is malfunctioning etc. causes crane out of control, thus
There is security incident.In use there is certain potential safety hazard in the single limiting and protecting device of crane, works as switch
After life-time service, inner sleeve wearing clearance excessive generation limit accuracy declines, or switching control points scaling loss is glued
Even, or the limit is connected when coming off with reel cross axle, crane hoisting all can be caused spacing malfunctioning, generation " hook
Head heaven " accident.May result in suspension hook lift heavy thing time serious and land accident, will result in the person and equipment cannot
The loss retrieved.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of has two-stage limit protection device
Bridge crane hoisting mechanism, provides double protection to lifting mechanism when shifting weight, tries to avert accidents.
This utility model is achieved in that a kind of bridge crane with two-stage limit protection device of offer
Lifting mechanism, including:
Little car body；
Hoist assembly, including motor, shaft coupling, power transmission shaft, brake, decelerator, reel, fixed pulley
Group and lifting hook pulley group, motor passes through power transmission shaft connection reducer, and power transmission shaft is provided with shaft coupling and brake,
Reel one end is connected with decelerator, and fixed pulley group and lifting hook pulley group are linked together by coarse-wire rope, then
Being connected with described reel by vertical hoisting rope, the assembly that hoists is fixed with described little car body by decelerator；
One-level limit protection device, for limit switch A, is connected by cross axle with the other end of reel, control
Lifting hook pulley group processed rises to one-level extreme position；And
Two grades of limit protection devices, for limit switch B, are fixed on little vehicle body upper portion, by a thin steel of flexibility
Cord upper end connects limit switch B, lower end socket one annular weight, and annular weight and is enclosed within vertical elevator simultaneously
On steel wire rope, lifting hook pulley group is fixed a most vertical support bar, post upper stationary annular weight
Hammer bracket, annular weight bracket is also socketed on vertical hoisting rope, and limit switch B controls lifting hook pulley
Group rises to two grades of extreme positions, and two grades of extreme positions are between one-level extreme position and described fixed pulley group.
Further, annular weight is made up of two semicircle weight unit.
Further, two grades of extreme positions than described one-level extreme position vertically apart from high 200-300mm.
Further, the quality of annular weight is 2-3Kg.
Further, limit switch A is LX36-88 limit switch.
Further, limit switch B is LX10-31 limit switch.
Compared with prior art, the utility model has the advantage of, be provided with two-stage limit protection device, when rising
When rising mechanism's transfer weight, when arriving one-level extreme position, limit switch A control lifting hook pulley group no longer
Rising, if limit switch A breaks down, lifting hook pulley group exceedes one-level extreme position and continues to rise, and arrives
When reaching two grades of extreme positions, weight bracket holds up weight, triggers limit switch B, controls lifting hook pulley group no longer
Continue to rise, try to avert accidents.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and this utility model is described in further detail by embodiment:
Fig. 1 is this utility model structural representation.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment is used only for explaining this utility model, is not used to limit this utility model.
In order to control the climb of bridge crane hoisting mechanism, trying to avert accidents, this utility model carries
Supply a kind of bridge crane hoisting mechanism with two-stage limit protection device, with reference to Fig. 1, including little car body
1, hoist assembly, one-level limit protection device and two grades of limit protection devices, the assembly that hoists include motor 2,
Shaft coupling 3, power transmission shaft 4, brake 5, decelerator 6, reel 7, fixed pulley group 8 and lifting hook pulley group 9,
Motor 2 is by power transmission shaft 4 connection reducer 6, and power transmission shaft 4 is provided with shaft coupling 3 and brake 5, reel
7 one end are connected with decelerator 6, and fixed pulley group 8 and lifting hook pulley group 9 are linked together by coarse-wire rope,
Being connected with reel 7 by vertical hoisting rope, the assembly that hoists is fixed with little car body 1 by decelerator 6 again；
One-level limit protection device is limit switch A10, is connected by cross axle with the other end of reel 7, controls
Lifting hook pulley group 9 rises to one-level extreme position；Two grades of limit protection devices are limit switch B11, are fixed on
Little car body 1 top, connects limit switch B11, lower end socket one annular by a flexible seizing wire upper end
Weight 12, and annular weight 12 be enclosed within vertical hoisting rope simultaneously, lifting hook pulley group 9 fixes one
The most vertical support bar 13, support bar 13 upper end stationary annular weight bracket 14, annular weight bracket 14
Also being socketed on vertical hoisting rope, limit switch B11 controls lifting hook pulley group 9 and rises to two grades of limit
Position, two grades of extreme positions are between one-level extreme position and described fixed pulley group 8.
When the action of transfer of weight being sling with this utility model, in uphill process, lifting hook pulley
When group 9 rises to one-level extreme position, triggering limit switch A10, lifting hook pulley group 9 is out of service, when
Limit switch A10 breaks down, and lifting hook pulley group 9 is broken through one-level extreme position and continued to rise, and is fixed on and hangs
Weight bracket 14 on hook assembly pulley 9 holds up the ring-like weight 12 being enclosed within hoisting rope, and at this moment the limit is opened
Closing B11 switch motion, lifting mechanism brake sticking brake, lifting hook pulley group 9 stops rising, and plays a protective role,
Avoid " gib head heaven ".
For convenience annular weight 12 is socketed on hoisting rope, as the improvement of technical scheme, annular
Weight 12 is made up of two semicircle weight unit.
According to limit switch B11 scene practical operation situation, preferred as technical scheme, make limit switch
B is 200～300mm action above one-level extreme position, overcomes effect of inertia lifting hook pulley group 9 not push up
To fixed pulley group 8.
Preferably, the quality of annular weight is 2-3Kg；Limit switch A is LX36-88 limit switch；Limit
Bit switch B is LX10-31 limit switch.
Claims (6)
1. there is the bridge crane hoisting mechanism of two-stage limit protection device, it is characterised in that including:
Little car body；
Hoist assembly, including motor, shaft coupling, power transmission shaft, brake, decelerator, reel, fixed pulley
Group and lifting hook pulley group, motor passes through power transmission shaft connection reducer, and power transmission shaft is provided with shaft coupling and brake,
Reel one end is connected with decelerator, and fixed pulley group and lifting hook pulley group are linked together by coarse-wire rope, then
Being connected with described reel by vertical hoisting rope, the assembly that hoists is fixed with described little car body by decelerator；
One-level limit protection device, for limit switch A, is connected by cross axle with the other end of described reel,
Control described lifting hook pulley group and rise to one-level extreme position；And
Two grades of limit protection devices, for limit switch B, are fixed on described little vehicle body upper portion, by a flexibility
Seizing wire upper end connects limit switch B, lower end socket one annular weight, and annular weight and is enclosed within described simultaneously
Vertically on hoisting rope, described lifting hook pulley group is fixed a most vertical support bar, on support bar
End stationary annular weight bracket, annular weight bracket is also socketed on described vertical hoisting rope, spacing opens
Closing the described lifting hook pulley group of B control and rise to two grades of extreme positions, two grades of extreme positions are in the described one-level limit
Between position and described fixed pulley group.
2. according to the bridge crane hoisting mechanism with two-stage limit protection device described in claim 1,
It is characterized in that, described annular weight is made up of two semicircle weight unit.
3. according to the bridge crane hoisting mechanism with two-stage limit protection device described in claim 1,
It is characterized in that, described two grades of extreme positions than described one-level extreme position vertically apart from high 200-300mm.
4. according to the bridge crane hoisting mechanism with two-stage limit protection device described in claim 1,
It is characterized in that, the quality of described annular weight is 2-3Kg.
5. according to the bridge crane hoisting mechanism with two-stage limit protection device described in claim 1,
It is characterized in that, described limit switch A is LX36-88 limit switch.
6. according to the bridge crane hoisting mechanism with two-stage limit protection device described in claim 1,
It is characterized in that, described limit switch B is LX10-31 limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479064.9U CN205634676U (en) | 2016-05-24 | 2016-05-24 | Bridge crane hoisting mechanism with two -stage limit protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620479064.9U CN205634676U (en) | 2016-05-24 | 2016-05-24 | Bridge crane hoisting mechanism with two -stage limit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205634676U true CN205634676U (en) | 2016-10-12 |
Family
ID=57055749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620479064.9U Expired - Fee Related CN205634676U (en) | 2016-05-24 | 2016-05-24 | Bridge crane hoisting mechanism with two -stage limit protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205634676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255469A (en) * | 2020-01-20 | 2020-06-09 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
-
2016
- 2016-05-24 CN CN201620479064.9U patent/CN205634676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255469A (en) * | 2020-01-20 | 2020-06-09 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
| CN111255469B (en) * | 2020-01-20 | 2021-09-17 | 中铁四局集团有限公司 | Modular disassembly construction method in closed narrow space of shield machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106946118A (en) | A kind of building hoist tape jam detection and the cable pulley system of automatic protection | |
| CN116119517A (en) | Automatic anti-torsion device for port crane lifting appliance | |
| CN205634676U (en) | Bridge crane hoisting mechanism with two -stage limit protection device | |
| CN201647839U (en) | Crown block counterweight limit device | |
| CN101343023B (en) | Comprehensive protector for safety of tower crane | |
| CN210558726U (en) | Elevator rope breakage detection protection device | |
| CN204528984U (en) | Low speed hydraulic elevator safety guard | |
| CN204150851U (en) | A kind of car anti-running control circuit | |
| CN201292181Y (en) | Steel wire rope feeding device of hoister | |
| CN203998506U (en) | Home lift safety tongs shift mechanism | |
| CN112211097A (en) | Stay cable maintenance trolley | |
| CN203568734U (en) | Novel safe lifting gear of tower crane | |
| CN105540440A (en) | Monitoring device for hoisting of steel wire rope | |
| CN2484294Y (en) | Lifting basket for tube warehouse | |
| CN105502164A (en) | Bridge crane crab with infrared alarm | |
| CN106966300B (en) | For the induction control system of tower crane | |
| CN214692962U (en) | Protection device for preventing crane hook from being pulled obliquely | |
| CN203754753U (en) | Multiple-protection falling preventing device for oxygen lance lifting trolley | |
| CN214456179U (en) | Auxiliary hoisting tool for high-voltage sleeve of transformer | |
| CN220223502U (en) | High-altitude anti-falling protection safety mechanism | |
| CN204355900U (en) | A kind of anti-falling safety device for building hoist | |
| CN102602771B (en) | Safety falling protector | |
| CN106536399A (en) | Security system for operations in wind generators | |
| CN210029788U (en) | Heavy hammer limiting device of hoisting crown block | |
| CN2512758Y (en) | Rope breaking protector for lift |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20170524 |