CN202415001U - Amplitude variation protection device of steel wire rope amplitude variation crane - Google Patents
Amplitude variation protection device of steel wire rope amplitude variation crane Download PDFInfo
- Publication number
- CN202415001U CN202415001U CN2011205425315U CN201120542531U CN202415001U CN 202415001 U CN202415001 U CN 202415001U CN 2011205425315 U CN2011205425315 U CN 2011205425315U CN 201120542531 U CN201120542531 U CN 201120542531U CN 202415001 U CN202415001 U CN 202415001U
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- CN
- China
- Prior art keywords
- pulley
- amplitude variation
- wire rope
- steel wire
- crane
- 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 - Lifetime
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Abstract
The utility model discloses an amplitude variation protection device of a steel wire rope amplitude variation crane. The amplitude variation protection device comprises a pulley seat, a pulley coupled to the pulley seat and a steel wire rope arranged on the pulley, wherein a convex block is arranged on at least one side of the pulley seat; each convex block and the pulley seat are positioned on two sides of the steel wire rope; a wedged block is fixedly arranged at one section of the steel wire rope, which extends along the tangent direction of the pulley; and the width of each wedged block is greater than a clearance between each convex block and the pulley seat. The amplitude variation protection device supplies a stress point to the steel wire rope when the steel wire rope is broken through matching of the wedged blocks and the convex blocks, so that the steep wire rope can be prevented from falling down, and the safety of the crane is improved; and the steel wire rope can be unloaded safely and maintained and repaired timely.
Description
Technical field
The utility model relates to a kind of rope luffing crane amplitude variation fender guard.
Background technology
The rope luffing hoisting crane is meant the hoisting crane that carries out changes in amplitude with steel rope.In building berth, harbour, dock zone, and many high pedestal jib cranes (hereinafter to be referred as: hoisting crane) adopted rope luffing to drive luffing device.Large-scale hoisting crane adopt steel cable through pulley wear around after, two ends are guided to machine room and are fixed on the amplitude-changing drum.This moment whole luffing power all thus the root steel rope bear; In case the situation of wire cable rupture takes place; Because the steel rope two ends are all becoming two after the fracture on the machine room reel, the other end does not have acting point, can cause luffing pulling force backward to disappear; The luffing jib makes hoisting crane damage and cause safety misadventure because of the weight of self falls.
The utility model content
The technical matters that the utility model will solve is the defective that causes hoisting crane damage and potential safety hazard in order to overcome rope luffing hoisting crane easy invar silk fracture of rope of the prior art, and a kind of rope luffing crane amplitude variation fender guard is provided.
The utility model solves above-mentioned technical matters through following technical proposals:
A kind of rope luffing crane amplitude variation fender guard, it comprises a pulley base, a pulley that is located on this pulley base; And stride the steel rope of being located on this pulley; Its characteristics are, are provided with a projection at least one side of this pulley base, and this projection and this pulley base are positioned at the both sides of this steel rope; This steel rope sets firmly a voussoir on extended one section of the tangential direction of this pulley, the width of this voussoir is greater than the gap of this projection and this pulley base.
Wherein, this rope luffing crane amplitude variation fender guard comprises two said projections, and said steel rope sets firmly this voussoir respectively on extended two sections of the tangential direction of this pulley.
Wherein, this pulley is positioned at the middle part of this steel rope.
In the utility model, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the utility model.
The positive progressive effect of the utility model is: the rope luffing crane amplitude variation fender guard of the utility model utilizes cooperating of voussoir and projection and pulley base; When fracture takes place steel rope, provide steel rope one stress point; Thereby prevent that steel rope integral body from coming off; Improved the safety performance of hoisting crane, safe unloading is provided, the condition of maintenance and repair in time.
Description of drawings
Fig. 1 is the structural representation of the rope luffing crane amplitude variation fender guard in the utility model one preferred embodiment.
Fig. 2 is the constitution diagram of this fender guard when fracture takes place steel rope in the preferred embodiment of the utility model.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.
As shown in Figure 1, the rope luffing crane amplitude variation fender guard of the utility model comprises a pulley base 1, and axle is established a pulley 2 on this pulley base 1, and steel rope 3 is set around on this pulley 2.Be respectively equipped with a projection 4 in the both sides of pulley base 1, steel rope 3 is between projection 4 and pulley 2.
Set firmly a voussoir 5 respectively on extend along this pulley 2 tangential directions at steel rope 3 two sections, the width of this voussoir 5 is greater than the spacing between two projections 4 and the pulley base 1.
Preferably, the equalizer pulley of this pulley for not rotating at ordinary times on this hoisting crane, this steel rope strides across the both sides of this equalizer pulley with symmetrical manner.Generally, the position of this equalizer pulley should be at the midway location of whole steel rope.
The safety factor of crane rope should be 4.5～11.2.Safety factor can be chosen in more than 6 when selecting generally speaking, and the steel rope of rope luffing hoisting crane can bear the deadweight of luffing jib under normal conditions and hang the pulling force of thing summation more than six times so.As shown in Figure 2; Under the situation of steel rope 3 fracture, if voussoir snaps between projection 4 and the pulley base 1, this moment this steel rope 3 stressed be at ordinary times two times; But still can bear when first three power doubly; So this moment, steel rope can not rupture, leave the sufficient time and will hang thing and in time put down, and take measures with transposing luffing steel rope.So just can reduce the safety performance of maintenance cost and raising hoisting crane greatly.
Though more than described the specific embodiment of the utility model, it will be understood by those of skill in the art that these only are casehistorys, the protection domain of the utility model is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite of principle that does not deviate from the utility model and essence, but these changes and modification all fall into the protection domain of the utility model.
Claims (3)
1. rope luffing crane amplitude variation fender guard; It comprises a pulley base; A pulley that is located on this pulley base, and stride the steel rope of being located on this pulley, it is characterized in that; At least one side at this pulley base is provided with a projection, and this projection and this pulley base are positioned at the both sides of this steel rope; This steel rope sets firmly a voussoir on extended one section of the tangential direction of this pulley, the width of this voussoir is greater than the gap of this projection and this pulley base.
2. rope luffing crane amplitude variation fender guard as claimed in claim 1; It is characterized in that; This rope luffing crane amplitude variation fender guard comprises two said projections, and said steel rope sets firmly this voussoir respectively on extended two sections of the tangential direction of this pulley.
3. according to claim 1 or claim 2 rope luffing crane amplitude variation fender guard is characterized in that this pulley is positioned at the middle part of this steel rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205425315U CN202415001U (en) | 2011-12-21 | 2011-12-21 | Amplitude variation protection device of steel wire rope amplitude variation crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205425315U CN202415001U (en) | 2011-12-21 | 2011-12-21 | Amplitude variation protection device of steel wire rope amplitude variation crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202415001U true CN202415001U (en) | 2012-09-05 |
Family
ID=46739785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205425315U Expired - Lifetime CN202415001U (en) | 2011-12-21 | 2011-12-21 | Amplitude variation protection device of steel wire rope amplitude variation crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202415001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919350A (en) * | 2021-01-29 | 2021-06-08 | 武汉船用机械有限责任公司 | Amplitude-variable steel wire rope detection device |
-
2011
- 2011-12-21 CN CN2011205425315U patent/CN202415001U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919350A (en) * | 2021-01-29 | 2021-06-08 | 武汉船用机械有限责任公司 | Amplitude-variable steel wire rope detection device |
| CN112919350B (en) * | 2021-01-29 | 2022-04-01 | 武汉船用机械有限责任公司 | Amplitude-variable steel wire rope detection device |
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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: 20120905 |
|
| CX01 | Expiry of patent term |