CN202625708U - Hoisting over-unwinding detection device - Google Patents
Hoisting over-unwinding detection device Download PDFInfo
- Publication number
- CN202625708U CN202625708U CN 201220031299 CN201220031299U CN202625708U CN 202625708 U CN202625708 U CN 202625708U CN 201220031299 CN201220031299 CN 201220031299 CN 201220031299 U CN201220031299 U CN 201220031299U CN 202625708 U CN202625708 U CN 202625708U
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- CN
- China
- Prior art keywords
- pulley
- spring
- slide shaft
- sliding shaft
- travel switch
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- 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 - Lifetime
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The utility model relates to a hoisting over-unwinding detection device capable of preventing a hoisting steel wire rope from being over-unwound. The device comprises a floating pulley, a spring, an adjusting pull rod, a travel switch, a bearing, a sliding shaft, a nut, a pulley frame, a pulley and the steel wire rope, wherein the floating pulley is arranged on the pulley frame with a slotted hole through the bearing and the sliding shaft; the steel wire rope is arranged in a rope groove of the floating pulley; the two ends of the sliding shaft are exposed from the pulley frame; the travel switch is arranged on the pulley frame; a contact rod of the travel switch can keep in contact with one end of the sliding shaft all the time; one end of the spring is hung at one end of the sliding shaft; and the other end of the spring is fixed above the pulley frame through the adjusting pull rod. According to the device, the floating pulley is tightly attached to the steel wire rope and connected to the pulley frame through the sliding shaft and the bearing; one end of the spring is fixed on the pulley frame, and the other end of the spring is hung on the sliding shaft; and the floating pulley drives the sliding shaft to slide up and down along the slotted hole in the pulley frame under the combined action of the tension of the spring and the steel wire rope, and the travel switch can be turned on and off, so that the function of detecting whether the hoisting steel wire rope is over-unwound or not is realized.
Description
Technical field
The utility model relates to a kind of construction machinery and equipment that is applicable to and promotes operation, prevents the detecting device that hoisting rope is excessively transferred, and is particularly suitable for steel rope is excessively transferred the detection occasion of the master winch steel rope of very responsive rotary drilling rig.
Background technology
At present, the construction machinery and equipment that the various roll coil of strips are raised is in transferring the process of weight, when weight has contacted the support object; After lineoutofservice signal pull descends significantly; Operating personal is difficult to judge whether steel rope is lax, if continue to transfer hoisting rope this moment, must the steel rope that cause being wrapped on the reel be broken away from original winding path; In case this situation takes place; Steel rope is wrapped on the reel by original track with regard to being difficult to, it is disorderly to continue to use steel rope will inevitably cause steel rope on reel, to twine in this state, causes its improper damage again.
Summary of the invention
The purpose of the utility model provides and a kind ofly is applicable to that various construction machinery and equipments contain winding plant, the pulleying detecting device that the prevention steel rope is excessively transferred.
The purpose of the utility model is achieved in that this device comprises unsteady pulley, spring, adjustment pull bar, travel switch, bearing, slide shaft, nut, pulley yoke, pulley, steel rope.The pulley that floats is installed on the pulley yoke that has slotted hole through bearing and slide shaft; Steel rope places the grooving of the pulley that floats, and pulley yoke is exposed at the slide shaft two ends, and travel switch is installed on the pulley yoke; Its contact lever can remain with an end of slide shaft and contact; Spring one end hangs over an end of slide shaft, and an other end is fixed on pulley yoke top through the adjustment pull bar, and the employing bearing is connected between slide shaft and the unsteady pulley.Can drive slide shaft under the combined action power of pulley of floating and produce displacement along the slip of the slotted hole on the pulley yoke through steel rope and spring; But an end contacting travel switch of slide shaft, and can open and the shutoff stroke switch.When the hoisting rope free end does not hang weight or load hour; Relaxation can appear in steel rope; To produce displacement at the pulling force of the spring movable pulley of floating downward; An end that is installed together slide shaft with unsteady pulley will contact with travel switch, open travel switch immediately, cut off the action that elevator continues to transfer.When hoisting rope free end suspension weight, the steel rope in tension, the unsteady downward slippage of pulley of compressing, an end of slide shaft will break away from travel switch, and elevator can continue to transferring rope till relaxing appears in its steel rope once more.Can realize whether hoisting rope crosses the real-time detection of putting, actv. has prevented the master file steel rope because of crossing the damage of putting the steel rope that brings.
Advantage: simple in structure, reliable and practical, with low cost; Adopt master file to prevent that the equipment of putting detecting device can cut off wrong operation automatically; Actv. prevents that hoisting rope from damaging because of putting the steel rope that brings excessively; Greatly reduce operator's operation easier, and increased the service life of steel rope.
During installation, at first, steel rope is installed is again made it walk around above-mentioned pulley the pulley pulley bracket of packing into; With the bearing unsteady pulley of packing into, the pulley that will the float pulley bracket of packing into places steel rope to float the grooving of pulley; Slide shaft is installed immediately, is made slide shaft pass bearing, the other end exposes pulley yoke; Spring one end is hung over the end of slide shaft, and an other end hangs on the adjustment scuffing of cylinder bore, uses nut will adjust pull bar and is fixed on the pulley yoke also as prescribed moment fastening nut; Travel switch is installed on the pulley bracket, and the adjustment angle makes it can touch slide shaft, is fixed immediately.
Description of drawings
Fig. 1 is an example structure figure of the utility model.
Fig. 2 is a cutaway view among Fig. 1.
Among the figure: 1, travel switch; 2, spring; 3, nut; 4, adjustment pull bar; 5, slide shaft; 6, unsteady pulley; 7, pulley yoke; 8, steel rope; 9, pulley; 10, bearing, 11, elevator.
The specific embodiment
Embodiment: pulley 9 is installed in the pulley yoke 7, and steel rope 8 is walked around pulley 9, and the pulley 6 that floats is close to steel rope 8; Be connected on the pulley yoke 7 through bearing 10 and slide shaft 5, adopt bearing 10 to be connected between slide shaft 5 and the unsteady pulley 6, can drive slide shaft 5 along the slip of the slotted hole on the pulley yoke 7 generation displacement under the combined action power of pulley 6 of floating through steel rope 8 and spring 2; Have slotted hole on the pulley yoke 7, slide shaft 5 two ends are square shaft, can in above-mentioned slotted hole, slide and can not rotate; Spring 2 one ends are connected the end of slide shaft 5; The other end is connected on the adjustment pull bar 4, and adjustment pull bar 4 is fixed on the pulley yoke 7 through nut 3, and travel switch 1 is fixed on the pulley yoke 7; But an end contacting travel switch 1 of slide shaft 5, and can open and shutoff stroke switch 1.
When reality was used, the pulley 6 that floats was close to steel rope 8 always and is rotated freely, and can realize sliding up and down along the slotted hole on the pulley yoke 7 simultaneously; When the free end of steel rope 8 not during bearing load; The load that steel rope 8 acts on the pulley 6 that floats reduces, and the pulling force that spring 2 acts on the slide shaft 5 makes the pulley drive slide shaft 5 that floats upwards slide along above-mentioned slotted hole, makes it touch travel switch 1; And open travel switch, cut off the action that elevator is transferred.When the free end bearing load of steel rope 8; Steel rope 8 will be tightened; Its load that acts on the pulley 6 that floats will increase, and the pulley 6 that floats will drive pulling force that slide shaft 5 overcomes spring 2 to lower slider, make slide shaft 5 and travel switch 1 disengaging; Travel switch 1 cuts out, and continues to keep the action that elevator is transferred.
Claims (2)
1. an elevator is crossed and put detecting device, it is characterized in that: this device comprises unsteady pulley, spring, adjustment pull bar, travel switch, bearing, pulley yoke, steel rope, pulley, slide shaft and nut; Spring one end is fixed on the pulley yoke through the adjustment pull bar, and an other end is fixed on the slide shaft; Adopt bearing to be connected between said slide shaft and the unsteady pulley; The slide shaft two ends are the square shaft structure.
2. a kind of elevator according to claim 1 is crossed and is put detecting device, can drive slide shaft under the combined action power of pulley through steel rope and spring that it is characterized in that floating and produce displacement along the slip of the slotted hole on the pulley yoke; But an end contacting travel switch of slide shaft, and can open and the shutoff stroke switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220031299 CN202625708U (en) | 2012-01-17 | 2012-01-17 | Hoisting over-unwinding detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220031299 CN202625708U (en) | 2012-01-17 | 2012-01-17 | Hoisting over-unwinding detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202625708U true CN202625708U (en) | 2012-12-26 |
Family
ID=47378928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220031299 Expired - Lifetime CN202625708U (en) | 2012-01-17 | 2012-01-17 | Hoisting over-unwinding detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202625708U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253682A (en) * | 2017-05-25 | 2017-10-17 | 中国冶集团有限公司 | A kind of hoisting rope tenslator |
| CN107473120A (en) * | 2017-10-12 | 2017-12-15 | 浙江华尔特机电股份有限公司 | A kind of Winder and electric clothes airing machine for electric clothes airing machine |
| CN110422782A (en) * | 2019-08-01 | 2019-11-08 | 上海振华重工(集团)股份有限公司 | Roll device and its braking method and winch |
-
2012
- 2012-01-17 CN CN 201220031299 patent/CN202625708U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253682A (en) * | 2017-05-25 | 2017-10-17 | 中国冶集团有限公司 | A kind of hoisting rope tenslator |
| CN107473120A (en) * | 2017-10-12 | 2017-12-15 | 浙江华尔特机电股份有限公司 | A kind of Winder and electric clothes airing machine for electric clothes airing machine |
| CN110422782A (en) * | 2019-08-01 | 2019-11-08 | 上海振华重工(集团)股份有限公司 | Roll device and its braking method and winch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
|
| CX01 | Expiry of patent term |