CN207581236U - A kind of steel wire rope protection system of the two-fold cylinder that rubs - Google Patents
A kind of steel wire rope protection system of the two-fold cylinder that rubs Download PDFInfo
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- CN207581236U CN207581236U CN201721212329.XU CN201721212329U CN207581236U CN 207581236 U CN207581236 U CN 207581236U CN 201721212329 U CN201721212329 U CN 201721212329U CN 207581236 U CN207581236 U CN 207581236U
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- steel wire
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- wire rope
- friction
- fold cylinder
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Abstract
The utility model discloses a kind of steel wire ropes for the two-fold cylinder that rubs to protect system, avoids the additional tension of steel wire rope, greatly protects steel wire rope and drum rope groove, improves the service life of steel wire rope and reel.Its technical solution is：System includes friction two-fold cylinder, horizontally-guided pulley, horizontal tensioning compensating pulley assembly, wherein friction two-fold cylinder includes the first reel, the second reel and the steel wire rope wound on the first reel and the second reel, steel wire rope in cable storage winch is tensioned compensating pulley assembly by level and horizontally-guided pulley is wrapped on friction two-fold cylinder, and the diameter of each circle on the first reel and the second reel reduces accordingly with the reduction of the tension of steel wire rope wound on it.
Description
Technical field
The utility model is related to a kind of technology applied on friction two-fold cylinder more particularly to for the double roller steel wires of friction
The equipment that rope elongation amount compensates.
Background technology
Friction two-fold cylinder is applied to be twisted in deep water pipe laying barge A＆R (releasing winch i.e. Abandonment＆Recovery Winch)
On the pulling winch of vehicle system, the characteristics of dragger winch is exactly steel wire rope import pulling force super large, and pulling winch passes through friction
Two-fold cylinder absorbs most steel wire rope tension, subtracts super large amplitude pulling force of the steel wire rope between pulling winch inlet and outlet
It is small.
Friction two-fold cylinder is by keeping enough arc of contact (angle), appropriate friction coefficient and for keeping cable collection tube
Power, by niggerhead (double dynamical friction reel-cage), the frictional force to rub between two-fold cylinder and steel wire rope absorbs greatly steel wire rope
Partial steel wire rope tension, the pulling force between steel wire rope is imported and exported significantly reduce.Have on single friction reel-cage several independent
Straight grooving, frictional force absorbs part steel wire rope tension on every circle, therefore from steel wire rope import to the cord tension often enclosed of outlet
It is all gradually reduced, according to " Hooke's law " F=k*x, k is the elongation x of rope stretch rate, the often steel wire rope on circle
It is gradually reduced, if the double drum diameters of friction remain unchanged, the often circle steel wire rope in addition to first lap " can all be forced " to elongate, and increase
Additional steel wire rope additional tension can cause frictional force between steel wire rope and reel to increase, aggravate steel rope abrasion, greatly in this way
Shorten the service life, while also damage the grooving of reel.
Utility model content
A brief summary of one or more aspects is given below to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and be both not intended to identify critical or decisive element in all aspects also non-
Attempt to define the range in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts are with the sequence for more detailed description given later.
The purpose of this utility model is that solving the above problems, a kind of steel wire rope protection system of two-fold cylinder that rubs is provided
System, avoids the additional tension of steel wire rope, greatly protects steel wire rope and drum rope groove, improves the use longevity of steel wire rope and reel
Life.
The technical solution of the utility model is：The utility model discloses a kind of steel wire rope protection system of two-fold cylinder that rubs
System, including friction two-fold cylinder, horizontally-guided pulley, horizontal tensioning compensating pulley assembly, wherein friction two-fold cylinder includes the first volume
Cylinder, the second reel and the steel wire rope wound on the first reel and the second reel, the steel wire rope in cable storage winch pass through level
Tensioning compensating pulley assembly and horizontally-guided pulley are wrapped on friction two-fold cylinder, each circle on the first reel and the second reel
Diameter reduce accordingly with the reduction of the tension of steel wire rope wound on it.
One embodiment of the steel wire rope protection system of friction two-fold cylinder according to the present utility model, the first reel and volume Two
The reduction amount of the diameter often enclosed on cylinder is to be matched based on theoretical tension of the steel wire rope on every circle with rope stretch amount
It is worth to.
One embodiment of the steel wire rope protection system of friction two-fold cylinder according to the present utility model, the diameter that reel i-th encloses
For Di, i-th of calculating cycle length of steel wire rope is Li, diameter DiWith calculating cycle length LiRelationship be：Li=π * Di/ 2+l,
Wherein i is the natural number of the number of turns quantity from 1 to reel.
The utility model comparison prior art has following advantageous effect：The principle of the utility model be according to steel wire rope into
Theoretical calculation obtains the steel wire rope tension that every layer of upper frictional force absorbs to the power of rope mouth again, obtains the theoretical actual tension of steel wire rope,
Further according to rope stretch rate k, the stroke of every circle rope capacity is obtained, can thus show that the theory of every circle steel wire is long
Degree designs the diameter often enclosed of friction two-fold cylinder further according to theoretical length.Because it is often enclosed from steel wire rope rope inlet to rope outlet
Cord tension be all gradually reduced, the rope elongation often enclosed reduces therewith.The design of the utility model ensure that steel wire
The physical length of rope is in most natural " harmony " matching status with the double drum diameters of friction, is generated without additional additional force,
Reduce additional abrasion, greatly protect steel wire rope and drum rope groove, improve the service life of steel wire rope and reel.
Description of the drawings
After the detailed description of embodiment of the disclosure is read in conjunction with the following drawings, it better understood when that this practicality is new
The features described above and advantage of type.In the accompanying drawings, each component is not necessarily drawn to scale, and with similar correlation properties or
The component of feature may have same or similar reference numeral.
Figure 1A to Fig. 1 E shows the effect of the friction two-fold cylinder using rope stretch compensation technique of the utility model
Figure.
Fig. 2A to Fig. 2 C shows the fundamental diagram of the friction two-fold cylinder of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with the drawings and specific embodiments.Note that below in conjunction with attached drawing and tool
The aspects of body embodiment description is only exemplary, and is understood not to carry out the scope of protection of the utility model any
Limitation.
As shown in Figure 1A to 1E, the friction two-fold cylinder of the present embodiment includes the first reel 1, the second reel 2 and steel wire rope 3.
Friction two-fold cylinder be wrapped in the pulling winch system of A＆R winches, overall structure as shown in Figure 1A, arrow direction table in Figure 1A
Show the rope direction of motion.In fig. ib, A ends are big pulling force side rope inlet, and the size of power is FGreatly, B ends are small pulling force side rope outlet,
The size of power is FIt is small, the pulling force of the inlet and outlet position of rope is all outside.Arrow direction in Figure 1B represents the stress side of rope
To.In Fig. 1 C and 1D, the diameter radix of the first lap of the first reel 1 and the second reel 2 is D, and the diameter of other circles is followed successively by
D2、D3、D4……D12, the identical diameter of the 7th circle of the first reel and the second reel is D12。
Referring to Fig. 2A to 2C, friction two-fold cylinder is mounted on pulling winch 4, and horizontally-guided pulley 5 is for changing steel wire rope
Direction, level tensioning compensating pulley assembly 6 ensures that the rope stretching side rope of pulling winch 4 has constant tension F when coming outIt is small.Storage
Cable winch 7 is used for storing wire.
Figure 1A to 1E is returned to, the first reel 1 and the second reel 2 have the straight grooving of 7 circles, and the direction of arrow represents in Fig. 1 D
The steel wire rope direction of motion, steel wire rope is in the entrance pulling force of the first lap of the first reel 1 and the pulling force of the entrance of the second reel 2
It is equal：F1=FGreatly, because only from mistake below the first reel 1, there is no wind steel wire rope on the first reel 1 herein.
And the pulling force of the first lap outlet of the second reel 2 is equal with the first reel 1 second circle rope import pulling force, is denoted as
F2, the first reel 1 second irises out the pulling force F of mouth2Pulling force with the circle import of the first reel 1 second is identical, is denoted as F3, with this
Analogize the F that can also be obtained in Fig. 1 D4、F5、F6、……F11、F13.Wherein the second reel 2 the 6th irises out the pulling force and the first volume of mouth
1 the 7th circle rope import pulling force of cylinder is equal, is denoted as F12, the first reel 1 the 7th irises out the pulling force F of mouth2With the second reel 2 the 7th
It is identical to enclose the pulling force of import, is denoted as F13=FIt is small。
The size that reel provides tractive force is determined by friction coefficient and arc of contact (angle), unrelated with the diameter of reel,
By Euler's formula：
F2=F1/eμα；F3=F2/eμα；F4=F3/eμα……F12=F13/eμα
In formula：
F1=FGreatlyFor A ends tension；
F2For steel wire rope from the import of A ends half-turn is wound on reel after port of export power, other F3、F4、F5…… F12As above
It is described；
F13=FIt is smallFor B tension end tension；
μ is friction coefficient；
α is cornerite 3.14rad of the steel wire rope on reel；
E is the bottom 2.718 of natural logrithm.
F is calculated according to above-mentioned2、F3、F4……F12、F13.It is arrived using steel wire rope into 2 first lap of the second reel as starting point
It is only a calculating cycle foundation length value that steel wire rope, which enters when the first reel 1 second encloses, length l1=π * D/2+l (the first volumes
The first lap diameter value of 1 and second reel 2 of cylinder is radix D=D1).Enter the first reel 1 second circle with steel wire rope to arrive for starting point
It is only second calculating cycle length l that steel wire rope, which enters when the second reel 2 second encloses,2；Second reel 2 second is entered with steel wire rope
It is only third calculating cycle length l to enclose when entering 1 third circle of first lap for starting point to steel wire rope3... ..., and so on obtain
l4、l5…… l12。
According to Hooke's law F=k*x, k is that rope stretch rate is definite value, the elongation of each steel wire rope calculating cycle length
It is also different to measure x, and the power of each circle is gradually reducing, therefore in l1On the basis of each steel wire rope calculating cycle length
Elongation x is also gradually reducing, and friction two-fold cylinder rope stretch amount compensation technique is exactly each calculating cycle Length Contraction
Amount is transferred on drum diameter, and steel wire rope is allowed not increase additional additional tension.Method is as follows：
(1) first calculating cycle foundation length value is l1=π * D/2+l；
(2) second calculating cycle length l2Interior steel wire rope decrement △ l2=(F3-F2)/k, by △ l2Value allow the second meter
The drum diameter tolerance in period is calculated to compensate.
l2=l1-△l2=π * D2/2+l
It can therefrom obtain D2。
(3) third calculating cycle length l3Interior steel wire rope decrement △ l3=(F4-F3)/k, by △ l3Value allow the second calculating
The drum diameter tolerance in period compensates.
L3=l2-△l3=π * D3/2+l
It can therefrom obtain D3, and so on obtain D4、D5、……D12。
The diameter respectively enclosed on reel each in this way also should accordingly reduce with the reduction of steel wire rope tension, and steel wire rope is made to exist
The value that a theoretical tension is often kept to match with rope stretch amount on circle avoids the additional tension of steel wire rope, reduces additional
Abrasion, protect steel wire rope.
Offer is for so that any person skilled in the art all can make or use this public affairs to the previous description of the disclosure
It opens.The various modifications of the disclosure all will be apparent, and as defined herein general for a person skilled in the art
Suitable principle can be applied to spirit or scope of other variants without departing from the disclosure.The disclosure is not intended to be limited as a result,
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (3)
1. it is a kind of rub two-fold cylinder steel wire rope protection system, which is characterized in that including friction two-fold cylinder, horizontally-guided pulley,
Level tensioning compensating pulley assembly, wherein friction two-fold cylinder includes the first reel, the second reel and in the first reel and second
The steel wire rope wound on reel, the steel wire rope in cable storage winch is tensioned compensating pulley assembly by level and horizontally-guided pulley twines
It is wound on friction two-fold cylinder, the diameter of each circle on the first reel and the second reel is with the tension of steel wire rope wound on it
Reduction and reduce accordingly.
2. the steel wire rope protection system of friction two-fold cylinder according to claim 1, which is characterized in that the first reel and second
The reduction amount of the diameter often enclosed on reel is to be matched based on theoretical tension of the steel wire rope on every circle with rope stretch amount
Be worth to.
3. the steel wire rope protection system of friction two-fold cylinder according to claim 1, which is characterized in that reel i-th encloses straight
Diameter is Di, i-th of calculating cycle length of steel wire rope is Li, diameter DiWith calculating cycle length LiRelationship be：Li=π * Di/2+
L, wherein i are the natural number of the number of turns quantity from 1 to reel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212329.XU CN207581236U (en) | 2017-09-20 | 2017-09-20 | A kind of steel wire rope protection system of the two-fold cylinder that rubs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212329.XU CN207581236U (en) | 2017-09-20 | 2017-09-20 | A kind of steel wire rope protection system of the two-fold cylinder that rubs |
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| CN207581236U true CN207581236U (en) | 2018-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445087A (en) * | 2017-09-20 | 2017-12-08 | 上海振华重工(集团)股份有限公司 | A kind of steel wire rope protection system of the two-fold cylinder that rubs |
| CN109231039A (en) * | 2018-09-13 | 2019-01-18 | 江苏科技大学 | A kind of electromechanical hoister system and working method for aerostatics lift-off recycling |
| CN109437036A (en) * | 2019-01-08 | 2019-03-08 | 大连海事大学 | Scientific investigation ship pulling winch subtracts tensioner and its operating method |
-
2017
- 2017-09-20 CN CN201721212329.XU patent/CN207581236U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445087A (en) * | 2017-09-20 | 2017-12-08 | 上海振华重工(集团)股份有限公司 | A kind of steel wire rope protection system of the two-fold cylinder that rubs |
| CN109231039A (en) * | 2018-09-13 | 2019-01-18 | 江苏科技大学 | A kind of electromechanical hoister system and working method for aerostatics lift-off recycling |
| CN109437036A (en) * | 2019-01-08 | 2019-03-08 | 大连海事大学 | Scientific investigation ship pulling winch subtracts tensioner and its operating method |
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