CN202247494U - Hoisting rope for elevator - Google Patents

Hoisting rope for elevator Download PDF

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Publication number
CN202247494U
CN202247494U CN2011202780692U CN201120278069U CN202247494U CN 202247494 U CN202247494 U CN 202247494U CN 2011202780692 U CN2011202780692 U CN 2011202780692U CN 201120278069 U CN201120278069 U CN 201120278069U CN 202247494 U CN202247494 U CN 202247494U
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rubber
monomer
load
heart yearn
plastic clad
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葛文国
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/062—Belts
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • D07B5/006—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties by the properties of an outer surface polymeric coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

The utility model relates to a hoisting rope for an elevator, which is designed for solving the technical problems of the conventional similar product, such as weak tractive force, relative sliding phenomenon, poor abrasion effect and short service life. The hoisting rope consists of a plurality of single units, wherein a plurality of strands of bearing core wires are arranged in the hoisting rope; the bearing core wires are made of a plurality of strands of steel wires; and a polygonal rubber and plastic coating layer is coated on the outer diameter of each bearing core wire. The hoisting rope is characterized in that a strand of bearing core wire is arranged in the single unit of each rubber and plastic coating layer; one side face of each signal unit is provided with a triangular heave, and the other symmetric side face of each signal unit is provided with a trapezoid boss; a ratio of the thickness of each rubber and plastic coating layer to the thickness of each rubber and plastic coating layer from the outer diameter of the bearing core wire to the plane of the trapezoid boss is 2 to 1; and a ratio of the thickness of the rubber and plastic coating layer to the width of the rubber and plastic coating layer is smaller than 0.2. The hoisting rope for the elevator has a rational design, a simple structure, low wear rate, long service life, stable transmission effect and good tractive force working effect, and is suitable for serving as the hoisting rope for the elevator and an improved structure of a similar product.

Description

The elevator traction band
Technical field
The utility model relates to the elevator traction band, is a kind of elevator traction band.
Background technology
Elevator be a kind of be the vertical conveyor of power with the motor, it is mainly used in tier building and takes advantage of people or carrying goods, is divided into car formula elevator and step automatic elevator according to its structure difference.Car formula elevator mainly is made up of traction machine, guide rail, counterweight, safety device, signal manipulation system, car and Room door, driven pulley, break-in wheel etc.; Traction machine is the power-equipment of elevator; It is provided with traction sheave, hangs with hoist ropes (being drawing belt in the utility model) on the traction sheave (driving wheel).Hoist ropes (band) two ends, an end is hung with counterweight, and an end hangs with the sedan-chair case.When driving wheel during,, make the upper and lower up-down of sedan-chair case and counterweight through the friction carry-over moment in motor driven.Existing drawing belt adopts the planar band traction mostly, and the plane engagement is adopted in the engagement between drawing belt and the driving wheel; For limiting its axial dipole field, the maintenance flange need be set.Keep flange and drawing belt two sides might produce relative slip, cause additional wear, shorten the service life of band.In order to overcome this disadvantage, there is drawing belt to process circular-arc convexity, though this can reduce the possibility of drawing belt axial dipole field, but still be not enough to guarantee fully that drawing belt does not overflow driving wheel, therefore still needing is provided with the maintenance flange.
This type of drawing belt such as Chinese patent document publication: publication number CN101122097A, open day on February 13rd, 2008, denomination of invention " belt of lift facility and manufacturing approach thereof and lift facility " with this belt; Above-mentioned drawing belt is gone up in order to guarantee that the load-bearing heart yearn distributes in place, has adopted separation that multiple need prepare in advance, the fixing ribbon of load-bearing heart yearn, when drawing belt is made, together takes shape in same drawing belt.These methods no doubt can guarantee that the load-bearing heart yearn is in design attitude, but obviously can increase manufacturing cost and difficulty.The publication number CN101121487A of Chinese patent document publication for another example, open day on February 13rd, 2008, denomination of invention " lift facility, lift facility with band and manufacturing approach thereof, band assembly and assembly method "; Provide a kind of drawing belt two sides that the protruding scheme of wedge shape is all arranged, but stipulated that the ratio of its bandwidth and tape thickness is 0.8 to 1.0, and its load-bearing heart yearn should be between the tape thickness as far as possible.Such scheme; The thickness of drawing belt increases; Little driving wheel (prime advantage that band drives is exactly the driving wheel that allows to use miniaturization, reducing the driving moment of drive motors, thereby the size of dwindling motor; Reduce manufacturing cost) when moving, with the service life of significantly reducing drawing belt with little break-in wheel.Analyze from the wearing and tearing of drawing belt, the wearing and tearing of drawing belt mainly occur in drawing belt and contact a side with driving wheel, and drawing belt and driven pulley (or break-in wheel) contact-making surface is not have wearing and tearing.Therefore, when the load-bearing heart yearn mediated, if contacting a side with driving wheel has worn and torn, the another side still remained intact, and drawing belt is not fully utilized.In sum, also there is fault of construction in existing all kinds of drawing belts, its tractive force, slide relatively, abrasive effect is relatively poor and service life is shorter.
Summary of the invention
For overcoming the deficiency of above-mentioned existence; The utility model purpose is to this area a kind of follow-on elevator traction band to be provided, and makes it solve the technical problem that existing like product structural design not good enoughly causes tractive force, slides relatively, abrasive effect is relatively poor and service life is short.The purpose of the utility model realizes through following technical scheme.
A kind of elevator traction band; This drawing belt is made up of several monomers, is provided with the load-bearing heart yearn of multiply in the said drawing belt, and the load-bearing heart yearn is processed by steel wire strand; The external diameter of load-bearing heart yearn is coated with polygonal rubber and plastic clad; It is characterized in that being provided with one load-bearing heart yearn in the monomer of said rubber and plastic clad, the side convexity triangular in shape of monomer, its symmetrical another side is trapezoid boss; The dual-side of the dual-side of monomer triangular hill and monomer trapezoid boss all is symmetrical set with the center line of angle to the load-bearing heart yearn of monomer triangular hill, and the rubber and plastic clad between monomer and the monomer is provided with triangular groove.Because the field of conjugate action of driving wheel needs carry-over moment, under special circumstances, during like elevator emergency brake, produce relatively between driving wheel and the drawing belt and slide and the generation wearing and tearing, and there is not this situation in driven pulley.An i.e. side of this drawing belt and driven pulley, break-in wheel (or claiming directive wheel) engagement, this side is that triangular hill prevents the axial sideslip of this drawing belt, produces relative displacement; And if this side is the plane, then there are the problem of axial sideslip in the another side of this drawing belt and driving wheel engagement equally, and therefore, this side is provided with and is protruding triangle, and protruding triangle both sides are provided with leg-of-mutton inclined plane groove.Between the driving wheel (or claim driving wheel) that this drawing belt is separately set in traction machine and the break-in wheel of elevator, or organize between driving wheel that this drawing belt is arranged at traction machine takes turns with the break-in of elevator more, leave the interval during axially-aligned between this drawing belt.
The rubber and plastic coating thickness of the external diameter of said load-bearing heart yearn to triangular hill point is greater than the rubber and plastic coating thickness on external diameter to the trapezoid boss plane of load-bearing heart yearn, and the optimum ratio of thickness of two sides is 2: 1.The rubber and plastic clad wearing and tearing of this drawing belt are main, and this asymmetric thickness is provided with the reduction that is beneficial to cost on the driving wheel of traction machine, improves service life.
The ratio of the bandwidth w of the tape thickness t of said rubber and plastic clad and rubber and plastic clad is less than 0.2.Improve the bearing capacity of drawing belt, adopting is worthless with the heart yearn overstriking merely, because the overstriking of load-bearing heart yearn means that promptly the diameter of driving wheel will increase, also just reduces the driving superiority of drawing belt, so best bet is the bandwidth that increases drawing belt.Simultaneously, consider the restriction of the versatility of drawing belt under different loads and system carrying device ability, above-mentioned numerical value is for satisfying the desired quantity of carrier of ideals requirement.
According to the said structure characteristics; The two sides of said drawing belt also can be set to respectively: the triangular groove that links to each other of triangular hill is provided with at interval between scheme one, said rubber and plastic clad one side monomer and the monomer, and the triangular groove that links to each other of trapezoid boss is provided with at interval between the monomer of another side and the monomer.Scheme two, according to the structure of such scheme one, the interval triangular groove of said rubber and plastic clad two sides replaces with triangular hill.Scheme three, according to the structure of such scheme two, said rubber and plastic clad two sides triangular hill at interval links to each other at interval and is provided with.The triangular hill angle of the clad of rubber and plastic described in the said structure is 2 α=60～120 degree.
The utility model is reasonable in design, and is simple in structure, and wear rate is low, long service life, the transmission effect stability, the tractive force action effect is good, be suitable as the elevator traction band and use, ex hoc genus anne the architecture advances of product.
Description of drawings
Fig. 1 is the structural representation of the utility model, and t is the tape thickness of rubber and plastic clad among the figure, and w is the width of rubber and plastic clad.
Fig. 2 is existing arc surface drawing belt structural representation.
Fig. 3 is the part structure for amplifying sketch map of Fig. 1.
Fig. 4 is the part structure for amplifying sketch map of Fig. 2.
Fig. 5 is the distressed structure sketch map of Fig. 1.
Fig. 6 is the distressed structure sketch map of Fig. 5.
Fig. 7 is the distressed structure sketch map of Fig. 6.
Above figure number and title: 1, rubber and plastic clad, 2, the load-bearing heart yearn, 100, monomer.
The specific embodiment
Embodiment combines accompanying drawing, and the structure and the operation principle of the utility model further described.Shown in 1, be provided with the load-bearing heart yearn 2 of multiply in this drawing belt, per share load-bearing heart yearn is processed by steel wire strand, and the external diameter of load-bearing heart yearn coats rubber and plastic clad 1.The ratio of the bandwidth w of the tape thickness t of rubber and plastic clad and rubber and plastic clad is less than 0.2, and the rubber and plastic coating thickness of the external diameter of load-bearing heart yearn to triangular hill point is greater than the rubber and plastic coating thickness on external diameter to the trapezoid boss plane of load-bearing heart yearn.The monomer 100 of this drawing belt as shown in Figure 3 is provided with one load-bearing heart yearn in the monomer, the side convexity triangular in shape of monomer, and its symmetrical another side is trapezoid boss, and some monomers are formed this drawing belt; The dual-side of the dual-side of monomer triangular hill and monomer trapezoid boss all is symmetrical set with the center line of angle to the load-bearing heart yearn of monomer triangular hill, and the rubber and plastic clad between monomer and the monomer is and is provided with triangular groove.
Architectural feature according to the utility model among above-mentioned Fig. 1, Fig. 3; Shown in 5; Its distressed structure: the triangular groove that links to each other of triangular hill is provided with at interval between said rubber and plastic clad one side monomer and the monomer, and the triangular groove that links to each other of trapezoid boss is provided with at interval between the monomer of another side and the monomer.According to the architectural feature of above-mentioned Fig. 5, as shown in Figure 6, its distressed structure: the interval triangular groove of said rubber and plastic clad two sides replaces with triangular hill.According to the architectural feature of above-mentioned Fig. 6, as shown in Figure 7, its distressed structure: said rubber and plastic clad two sides triangular hill at interval links to each other at interval and is provided with.Above-mentioned three kinds of distressed structures also can reach identical technical purpose of the utility model and technique effect; Simultaneously; According to the architectural feature of the utility model, those skilled in the art make above-mentioned four kinds of conspicuous architecture advances of structure, also will fall into the protection domain of the utility model.
And like Fig. 2, existing a kind of arc surface drawing belt shown in Figure 4; This arc surface drawing belt also is made up of some monomers, is provided with one load-bearing heart yearn in the monomer, is provided with the load-bearing heart yearn of multiply in this arc surface drawing belt; Per share load-bearing heart yearn is processed by steel wire strand; The external diameter of load-bearing heart yearn coats the rubber and plastic clad, and the both sides of the monomer of this arc surface drawing belt are circular arc respectively, and the monomer of rubber and plastic clad is symmetrical set with load-bearing heart yearn center to arc surface center line.
As shown in Figure 3, so that wherein a monomer stressing conditions analysis is following, below the field of conjugate action be meant that the rubber and plastic of drawing belt and driven pulley (break-in wheel) or driving wheel coats aspect:
Fg is the gravity (suppose that all tractive force concentrate on a side of this monomer, this supposition can be simplified analysis, but does not influence conclusion) of the utility model traction weight; Fn is a normal force, and Ft is a tangential force, and α is this drawing belt and the driving wheel field of conjugate action angle of cut with gravity, because α is a steady state value, so tractive force Fd and tangential force Ft are respectively:
Fd=μ * Fn=μ * Fg/cos α (μ is a coefficient of friction);
Ft＝Fg×tgα。
When this drawing belt was in the wedge groove with the engagement driving wheel, the Ft about it equated and offsets; When its secundly, during like the left side, then left side Ft will be greater than right side Ft; To the be turned right tangential force of displacement of this drawing belt has guaranteed that it is in normal engagement.Can know by Fig. 3, only need to change the α value, can change tractive force and tangential force; Therefore, according to coefficient of friction and traction condition, change α and can obtain satisfied operation conditions.
Like Fig. 2, shown in Figure 3, the various power definition of existing arc surface drawing belt are identical with the utility model, but angle [alpha] changes θ into, because existing arc surface drawing belt is an arc surface, on the difference of arc surface, its θ value is a continually varying; Therefore, Fn and Ft also are continually varyings.If the central angle of supposition 1/2 arc section is α,, then have at a certain little section arc surface:
dFd＝μ×dFg×1/cosθ×dθ；
Figure DEST_PATH_GDA0000128745580000041
Figure DEST_PATH_GDA0000128745580000042
dFt＝dFg×tgθ×dθ；
Ft = ∫ 0 Fg ∫ 0 α dFg × tgθ × dθ = - Fg × ( ln cos α - ln cos 0 ) = - Fg × ln cos α .
If give α a different set of value, on the field of conjugate action of two kinds of drawing belts, obtain a different set of Fd and Ft, like following table:
Figure DEST_PATH_GDA0000128745580000044
Visible by last table, even during α=60 °, the arc surface Ft of arc surface drawing belt does not reach 0.7Fg; If make tractive force too unconcentrated,, adopt the corresponding circular arc of a load-bearing heart yearn to alleviate the pressure of arc surface; Has only the α of increasing value; Thereby for the bandwidth of this arc surface drawing belt is enlarged markedly, thereby increase the manufacturing cost of this arc surface drawing belt, more disadvantageous is with the amount of deflection that increases live axle.The way that overcomes the problems referred to above has only the diameter that increases wheel shaft, but will reduce the superiority that the arc surface drawing belt drives again like this.If during the arc surface drawing belt circular arc field of conjugate action, for reducing the bandwidth angle of arc surface drawing belt, preferably α is no more than 30 °, and this moment, Ft was merely 0.144Fg, and the Ft that is not enough to provide enough eliminates departing from of arc surface drawing belt.And the utility model is during in α=45 °, even do not increase bandwidth, the value of the Fd that provide this moment and Ft arc surface drawing belt during also significantly greater than α=60 ° promptly satisfies the tractive force of driving and the requirement of axial limiting fully.

Claims (7)

1. elevator traction band; This drawing belt is made up of several monomers (100), is provided with the load-bearing heart yearn (2) of multiply in the said drawing belt, and the load-bearing heart yearn is processed by steel wire strand; The external diameter of load-bearing heart yearn is coated with polygonal rubber and plastic clad (1); It is characterized in that being provided with one load-bearing heart yearn (2) in the monomer (100) of said rubber and plastic clad (1), the side convexity triangular in shape of monomer, its symmetrical another side is trapezoid boss; The dual-side of the dual-side of monomer triangular hill and monomer trapezoid boss all is symmetrical set with the center line of angle to the load-bearing heart yearn of monomer triangular hill, and the rubber and plastic clad between monomer and the monomer is provided with triangular groove.
2. elevator traction band according to claim 1, rubber and plastic clad (1) thickness of external diameter to triangular hill point that it is characterized in that said load-bearing heart yearn (2) is greater than the rubber and plastic coating thickness on external diameter to the trapezoid boss plane of load-bearing heart yearn.
3. elevator traction band according to claim 1, the ratio of width of tape thickness and rubber and plastic clad that it is characterized in that said rubber and plastic clad (1) is less than 0.2.
4. elevator traction band according to claim 1; The triangular groove that links to each other that it is characterized in that triangular hill between said rubber and plastic clad (1) one side monomer (100) and the monomer is provided with at interval, and the triangular groove that links to each other of trapezoid boss is provided with at interval between the monomer of another side and the monomer.
5. elevator traction band according to claim 1; The triangular hill that links to each other that it is characterized in that triangular hill between said rubber and plastic clad (1) one side monomer (100) and the monomer is provided with at interval, and the triangular hill that links to each other of trapezoid boss is provided with at interval between the monomer of another side and the monomer.
6. like the said elevator traction band of claim 5, it is characterized in that the continuous at interval setting of said rubber and plastic clad (1) two sides triangular hill at interval.
7. like claim 1,4,5 or 6 said elevator traction bands, the triangular hill angle that it is characterized in that said rubber and plastic clad (1) is 60～120 degree.
CN2011202780692U 2011-08-02 2011-08-02 Hoisting rope for elevator Expired - Lifetime CN202247494U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102304863A (en) * 2011-08-02 2012-01-04 葛文国 Elevator traction belt and manufacture method thereof
US10556775B2 (en) 2016-02-09 2020-02-11 Otis Elevator Company Surface construction of elevator belt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102304863A (en) * 2011-08-02 2012-01-04 葛文国 Elevator traction belt and manufacture method thereof
CN102304863B (en) * 2011-08-02 2014-01-15 宁波谷达机电有限公司 Elevator traction belt and manufacture method thereof
US10556775B2 (en) 2016-02-09 2020-02-11 Otis Elevator Company Surface construction of elevator belt

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