WO2018058783A1 - 一种深立井多绳缠绕提升钢丝绳张力自动均衡装置及方法 - Google Patents

一种深立井多绳缠绕提升钢丝绳张力自动均衡装置及方法 Download PDF

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WO2018058783A1
WO2018058783A1 PCT/CN2016/108877 CN2016108877W WO2018058783A1 WO 2018058783 A1 WO2018058783 A1 WO 2018058783A1 CN 2016108877 W CN2016108877 W CN 2016108877W WO 2018058783 A1 WO2018058783 A1 WO 2018058783A1
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tension
wire rope
hoisting
balance
rope
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PCT/CN2016/108877
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English (en)
French (fr)
Inventor
曹国华
蒋立飞
朱真才
范纪宇
苏卓
彭维红
周公博
彭玉兴
李伟
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中国矿业大学
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Publication of WO2018058783A1 publication Critical patent/WO2018058783A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/06Arrangements of ropes or cables
    • B66B7/10Arrangements of ropes or cables for equalising rope or cable tension

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  • the invention relates to a multi-rope friction lifting system, in particular to a multi-rope winding hoisting wire rope tension self-balancing device and method suitable for deep vertical wells.
  • the tension balance adjustment method of the wire rope in the lifting system is mainly based on the hydraulic system of the Unicom principle to control the expansion and contraction of the hydraulic cylinder, thereby adjusting the tension balance of the rope length.
  • the method can not adjust the stroke too long, otherwise the method realizes automatic adjustment, and the hydraulic system It is easy to leak, causing safety hazards; another way of adjusting is to control the height of the connection point by the lever principle of the equal arm, and then adjust the tension balance of the rope length.
  • the main disadvantage of this method is that the adjustment stroke is short. If the labor is involved in the adjustment, the workload is large, which is likely to cause unnecessary accidents, which is not conducive to improving the efficient operation of the system.
  • the object of the present invention is to provide a multi-rope winding hoisting wire rope tension automatic equalizing device and method for deep-well wells in accordance with the deficiencies in the prior art, and to solve the problem of self-real-time in the state of tension unbalance in the multi-rope lifting process.
  • the dynamic change of followability adjusts the tension balance.
  • the deep vertical well multi-rope hoisting wire rope tension automatic equalizing device of the present invention comprises a driving system, wherein the driving system is provided with two sets of sliding guiding balance wheels which can be operated up and down, and two sets of sliding guiding balance wheels are connected with tension balance mechanism;
  • the sliding guiding sun wheel comprises a guiding sun wheel, a shaft of the fixed guiding sun wheel, a moving pulley coaxial with the guiding sun wheel, the guiding sky wheel and the moving pulley are all rotating around the axis;
  • the sliding rail is arranged vertically on both sides of the guiding sky wheel
  • the two ends of the shaft are provided with a slider matching the slide rail, and the slider is provided with a rolling guide shoe movable in the slide rail;
  • the tension balance mechanism comprises a balance wire rope, a top beam fixed on the hoistway beam beam, and two rows of fixed pulleys fixed on the top beam, the balance wire rope is fixed at one end on the top beam, and the other end is sequentially wound around the movable pulley and The pulley is fixed to the top beam.
  • the guide wheels are two.
  • the movable pulleys are arranged on both sides of the guiding balance wheel and arranged symmetrically, and each side has two.
  • the method for automatically adjusting the tension of the rope tension in the deep shaft of the deep vertical well using the above device comprises the following steps:
  • the two sets of sliding guide days are caused by the balance wire rope wound on the movable pulley and the fixed pulley on the two sets of sliding guide wheels.
  • the corresponding moving pulley on the wheel is subjected to the same pulling force of the balance wire rope, that is, the tension applied to the two sets of sliding guide wheels is the same, thereby maintaining the tension balance between the lifting wires.
  • the hoisting wire rope with increased tension is applied to the corresponding guide wheel of one of the sliding guide wheels, and the tension is greater than the tension formed by the balance wire rope wound on the corresponding moving pulley, so that the guiding sky wheel is on both sides of the sliding track
  • the inner side moves downwards relatively; the other tensioning wire rope is applied to the corresponding guide wheel of the other set of sliding guide wheels, because the pressure is smaller than the tension formed by the balance wire rope wound on the corresponding moving pulley, so that The guide wheel moves relatively upwards in the side rails.
  • the guide wheel on the side with the greater tension of the wire rope reduces the tension of the corresponding wire rope due to the downward movement, and balances the lift.
  • the tension of the wire rope is relatively low or the tension of the lifting wire is relatively increased due to the excessively long winding distance; on the contrary, the guiding sun wheel of the side with the small tension of the wire rope increases the length of the corresponding lifting wire rope due to the upward movement.
  • the tension is increased, and the tension of the hoisting wire rope is relatively reduced due to the relatively excessive release distance of the hoisting wire rope descending process or the relatively small winding distance of the rising process; since the tension in the balance wire rope remains the same at all times, The tension applied to the two sets of sliding guides is the same, so that the tension of the hoisting ropes on the corresponding sliding guides remains the same, and finally the tension of the plurality of hoisting ropes is automatically equalized.
  • the present invention realizes tension balance by a tension balance mechanism connected to a sliding guide wheel, which is simple in structure, easy to process, reliable in performance, simple in installation and maintenance, and capable of real-time monitoring and automatic adjustment according to the prior art. Wire rope tension. Has the following advantages:
  • the invention has reliable action, can automatically adjust the tension of each hoisting wire rope and make the force uniform, reduce the wear of the wire rope, improve the service life of the wire rope, ensure the smooth and safe operation of the lifting container, and is beneficial to improve the reliability of the lifting system. Sex.
  • the tension balance mechanism of the present invention adopts a pulley block system, and the adjustment is fast and accurate, without delay, and the effect is intuitive.
  • the tension balance can be automatically adjusted without manual measurement of the tension on the wire rope, and the tension of each traction wire rope can be ensured.
  • the invention has the advantages of simple structure, convenient processing and installation, and can effectively save installation and debugging time and improve use efficiency.
  • Figure 1 is a schematic perspective view of the present invention
  • Figure 2 is a schematic plan view of the present invention
  • FIG. 3 is a schematic structural view of a sliding guide wheel and a tension balance mechanism according to the present invention.
  • drive system 1 roller hoist 1-1, hoisting wire rope 1-2, lifting container 1-3, reverse sheave 1-4, tail rope 1-5, sliding guide wheel 2, guide wheel 2-1, shaft 2-2, movable pulley 2-3, slide rail 2-4, slider 2-5, rolling guide shoe 2-6, tension balance mechanism 3 , balance wire rope 3-1, fixed pulley 3-2, top beam 3-3.
  • the deep vertical well multi-rope hoisting wire rope tension automatic equalizing device of the invention is mainly driven by the driving system 1, two sets of sliding guiding casters 2 arranged on the driving system 1, and two sets of sliding guiding canopies 2 can be operated up and down on the driving system 1 a tension balance mechanism 3 is connected to the two sets of sliding guide wheels 2;
  • the drive system 1 includes a drum hoist 1-1, a hoisting wire rope 1-2, a lifting container 1-3, a reverse sheave 1-4 and a tail rope 1-5, and the hoisting wire rope 1-2 is wound around the drum
  • the two ends of the hoisting wire rope 1-2 are respectively fixed above the two lifting containers 1-3, above the lifting container 1-3 on the side of the drum hoist 1-1 a reverse sheave 1-4 for guiding the hoisting wire rope 1-2 is provided, and two ends of the tail rope 1-5 are respectively fixed below the two lifting containers 1-3;
  • the sliding guide wheel 2 includes a guide wheel 2-1, a shaft 2-2 of the fixed guide wheel 2-1, a movable pulley 2-3 coaxial with the guide wheel 2-1, and a guide wheel 2-1.
  • the movable pulleys 2-3 both rotate around the shaft 2-2; the sliding rails 2-4 are vertically arranged on both sides of the guiding sun gear 2-1, and the two ends of the shaft 2-2 are matched with the sliding rails 2-4.
  • the slider 2-5, the slider 2-5 is provided with a rolling guide shoe 2-6 which can move in the sliding rail; the guiding sky wheel 2-1 is wound with the lifting wire rope 1-2.
  • the moving pulleys 2-3 are arranged on both sides of the guiding caster 2-1, symmetrically arranged, and each side has two.
  • the tension balance mechanism 3 includes a balance wire rope 3-1, a top beam 3-3 fixed on the hoistway beam, and two top pulleys 3-2 fixed on the top beam 3-3, the balance wire rope 3- One end is fixed to the top beam 3-3, and the other end is sequentially fixed around the movable beam 2-3 and the fixed pulley 3-2 and then fixed to the top beam 3-3.
  • the method for automatically adjusting the tension of the multi-rope hoisting wire rope of the deep vertical well of the invention comprises the following steps:
  • One of the tension-increased hoisting ropes 1-2 is applied to one of the set of guiding guides 2 corresponding to the guiding sun gear 2-1, since the pressure is greater than the balancing wire rope 3-1 by winding on the corresponding moving pulley 2-3
  • the tension formed on the upper side causes the guide crown 2-1 to move relatively downwardly in the side rails 2-4; the other tension-lowering hoisting rope 1-2 is applied to the other set of slippery
  • the guide wheel 2-1 of the movable guide wheel 2 since the pressure is smaller than the tension formed by the balance wire rope 3-1 by being wound on the corresponding movable pulley 2-3, the guide wheel 2-1 is on both sides
  • the slide rails 2-4 move relatively upward.
  • the guide crown 2-1 of the side of the hoisting wire rope 1-2 is weakened, and the length of the corresponding hoisting wire rope 1-2 is reduced due to the downward movement.
  • the tension is reduced, and the tension of the hoisting wire rope 1-2 is relatively increased due to the relatively small release distance of the hoisting wire rope 1-2 and the relatively excessive winding distance during the ascending process; instead, the hoisting wire 1-2
  • the guide crown 2-1 on the side with less tension increases the tension of the corresponding hoisting rope 1-2 due to the upward movement, and balances the release distance due to the release of the hoisting rope 1-2.
  • the tension of the hoisting wire rope is relatively reduced due to the relatively small winding distance of the ascending process; since the tensions in the balance wire rope 3-1 remain the same at all times, the tension applied to the two sets of sliding guide wheels 2 is the same, so that the corresponding sliding The tension of the hoisting wire rope 1-2 on the guiding sun gear 2 remains the same, and finally the tension of the plurality of lifting wire ropes 1-2 is automatically equalized.

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

Abstract

一种深立井多绳缠绕提升钢丝绳(1-2)张力自动均衡装置及方法,包括由滚筒提升机(1-1)、提升钢丝绳(1-2)、提升容器(1-3)、反绳轮(1-4)、尾绳(1-5)组成的驱动系统(1),驱动系统(1)上设有可以上下运行的滑动导向天轮(2),滑动导向天轮(2)上连接有平衡绳(3-1)组成的张力平衡机构(3)。当提升系统运行过程中出现提升钢丝绳(1-2)张力不平衡状态时,通过连接在滑动导向天轮(2)上的张力平衡机构(3)实现张力平衡。其结构简单、易加工、性能可靠、安装和维护简单,能够自动调节各提升钢丝绳(1-2)张力平衡。

Description

一种深立井多绳缠绕提升钢丝绳张力自动均衡装置及方法 技术领域
本发明涉及一种多绳摩擦提升系统,尤其是一种适用于深立井的多绳缠绕提升钢丝绳张力自平衡装置及方法。
背景技术
在多绳缠绕提升系统中,各根钢丝绳的均载对提升系统的安全性、经济性有着极其重要的影响,所以张力平衡装置至关重要。目前,提升系统中钢丝绳的张力平衡调节方式主要是基于联通原理的液压系统来控制液压缸的伸缩,进而调节绳长平衡张力,该方法调节行程不能太长,否则法实现自动调节,同时液压系统易泄露,造成安全隐患;另外一种调节方式是通过等臂的杠杆原理控制连接点的高低,进而调节绳长平衡张力。该方法主要缺点是调节行程短,。若人工参与调节,则工作量大,容易造成不必要的事故,不利于提升系统的高效运行。
发明内容
技术问题:本发明的目的是针对现有技术中的不足,提供一种深立井多绳缠绕提升钢丝绳张力自动均衡装置及方法,解决在多绳提升过程中出现张力不均衡状态下,通过自身实时跟随性的动态变化调节张力平衡。
技术方案:本发明的深立井多绳提升钢丝绳张力自动均衡装置,包括驱动系统,所述驱动系统上设有可以上下运行的两组滑动导向天轮,两组滑动导向天轮上连接有张力平衡机构;
所述的滑动导向天轮包括导向天轮、固定导向天轮的轴、与导向天轮同轴的动滑轮,导向天轮与动滑轮均绕轴转动;导向天轮的两侧竖直布置有滑轨,轴的两端设有与滑轨相吻合的滑块,滑块上设有可以在滑轨内运动的滚动导靴;
所述的张力平衡机构包括平衡钢丝绳、固定在井道梁架上的顶梁,顶梁上固定有两排定滑轮,所述的平衡钢丝绳一端固定在顶梁上,另一端依次绕过动滑轮和定滑轮后固定在顶梁上。
所述的导向天轮为2个。
所述的动滑轮设在导向天轮两侧,对称布置,每一侧各有两个。
使用上所述装置的深立井多绳提升钢丝绳张力自动均衡方法,包括如下步骤:
a.开始工作前,由于张力平衡机构中的平衡钢丝绳内各处的张力时刻保持相同,缠绕在两组滑动导向天轮上的动滑轮与定滑轮上的平衡钢丝绳作用下,使两组滑动导向天轮上相应的动滑轮受到平衡钢丝绳的相同的拉力,即施加在两组滑动导向天轮的拉力相同,从而保持提升钢丝绳间的张力平衡。
b.工作过程中,当深立井提升系统运行过程中出现其中一根提升钢丝绳相对另一根提升钢丝绳在下放或上升过程中释放或缠绕距离不同而形成提升钢丝绳张力不平衡状态时,其中一根张力增大的提升钢丝绳施加在其中一组滑动导向天轮相应的导向天轮上,由于其压力大于平衡钢丝绳通过缠绕在相应的动滑轮上而形成的拉力,使该导向天轮在两侧滑轨内相对向下运动;另一根张力变小的提升钢丝绳施加在另一组滑动导向天轮相应的导向天轮上,由于其压力小于平衡钢丝绳通过缠绕在相应的动滑轮上而形成的拉力,使该导向天轮在两侧滑轨内相对向上运动。
c.在两组导向天轮各自相对运动过程中,提升钢丝绳张力大的一侧的导向天轮由于向下运动使相应的提升钢丝绳的长度变小而减小了其张力,平衡了由于该提升钢丝绳下放过程释放距离相对过少或上升过程缠绕距离相对过多导致的提升钢丝绳相对增加的张力;相反,提升钢丝绳张力小的一侧的导向天轮由于向上运动使相应的提升钢丝绳的长度变大而增大了其张力,平衡了由于该提升钢丝绳下放过程释放距离相对过多或上升过程缠绕距离相对过少导致的提升钢丝绳相对减少的张力;由于平衡钢丝绳内各处的张力时刻保持相同,因此施加在两组滑动导向天轮的拉力相同,从而相应的滑动导向天轮上的提升钢丝绳的张力保持相同,最终实现多根提升钢丝绳张力自动均衡。
有益效果:本发明通过连接在滑动导向天轮上的张力平衡机构实现张力平衡,与现有技术相比,结构简单、易加工、性能可靠、安装和维护简单,同时能够实时监测、自动调节各钢丝绳张力。具有如下优点:
(1)本发明动作可靠,可自动调节各提升钢丝绳的张力并使受力均匀,减小钢丝绳的磨损,提高钢丝绳的使用寿命,保证提升容器运行的平稳和安全,有利于提高提升系统的可靠性。
(2)本发明的张力平衡机构采用滑轮组系统,调节快速准确,没有延迟,效果直观。不需人工测量钢丝绳上的拉力就能自动调节张力平衡,且能保证各曳引钢丝绳的张力一致。
(3)本发明结构简单,方便加工和安装使用,可有效节约安装与调试时间,提高使用效率。
附图说明
图1为本发明的立体结构示意图;
图2为本发明的平面结构示意图;
图3为本发明的滑动导向天轮与张力平衡机构结构示意图。
图中:驱动系统1、滚筒提升机1-1、提升钢丝绳1-2、提升容器1-3、反绳轮1-4、尾绳 1-5、滑动导向天轮2、导向天轮2-1、轴2-2、动滑轮2-3、滑轨2-4、滑块2-5、滚动导靴2-6、张力平衡机构3、平衡钢丝绳3-1、定滑轮3-2、顶梁3-3。
具体实施方式
下面结合附图中的实施例对本发明作进行进一步的描述:
本发明的深立井多绳提升钢丝绳张力自动均衡装置,主经由驱动系统1、设在驱动系统1上的两组滑动导向天轮2,两组滑动导向天轮2可以在驱动系统1上上下运行,两组滑动导向天轮2上连接有张力平衡机构3;
所述的驱动系统1包括滚筒提升机1-1、提升钢丝绳1-2、提升容器1-3、反绳轮1-4和尾绳1-5,所述的提升钢丝绳1-2缠绕在滚筒提升机1-1和滑动导向天轮2上,提升钢丝绳1-2的两端分别固定在两个提升容器1-3的上方,靠滚筒提升机1-1一侧的提升容器1-3上方设有引导提升钢丝绳1-2的反绳轮1-4,所述尾绳1-5的两端分别固定在两个提升容器1-3的下方;
所述的滑动导向天轮2包括导向天轮2-1、固定导向天轮2-1的轴2-2、与导向天轮2-1同轴的动滑轮2-3,导向天轮2-1与动滑轮2-3均绕轴2-2转动;导向天轮2-1的两侧竖直布置有滑轨2-4,轴2-2的两端设有与滑轨2-4相吻合的滑块2-5,滑块2-5上设有可以在滑轨内运动的滚动导靴2-6;导向天轮2-1上绕有提升钢丝绳1-2。所述的导向天轮2-1为2个。所述的动滑轮2-3设在导向天轮2-1两侧,对称布置,每一侧各有两个。
所述的张力平衡机构3包括平衡钢丝绳3-1、固定在井道梁架上的顶梁3-3,顶梁3-3上固定有两排定滑轮3-2,所述的平衡钢丝绳3-1一端固定在顶梁3-3上,另一端依次绕过动滑轮2-3和定滑轮3-2后固定在顶梁3-3上。
本发明的深立井多绳提升钢丝绳张力自动均衡方法,包括如下步骤:
a.开始工作前,由于张力平衡机构3中的平衡钢丝绳3-1内各处的张力时刻保持相同,缠绕在两组滑动导向天轮2上的动滑轮2-3与定滑轮3-2上的平衡钢丝绳3-1作用下,使两组滑动导向天轮2上相应的动滑轮2-3受到平衡钢丝绳3-1的相同的拉力,即施加在两组滑动导向天轮2的拉力相同,从而保持提升钢丝绳间的张力平衡。
b.工作过程中,当深立井提升系统运行过程中出现其中一根提升钢丝绳相对另一根提升钢丝绳在下放或上升过程中释放或缠绕距离不同而形成提升钢丝绳1-2张力不平衡状态时,其中一根张力增大的提升钢丝绳1-2施加在其中一组滑动导向天轮2相应的导向天轮2-1上,由于其压力大于平衡钢丝绳3-1通过缠绕在相应的动滑轮2-3上而形成的拉力,使该导向天轮2-1在两侧滑轨2-4内相对向下运动;另一根张力变小的提升钢丝绳1-2施加在另一组滑 动导向天轮2相应的导向天轮2-1上,由于其压力小于平衡钢丝绳3-1通过缠绕在相应的动滑轮2-3上而形成的拉力,使该导向天轮2-1在两侧滑轨2-4内相对向上运动。
c.在两组导向天轮2-1各自相对运动过程中,提升钢丝绳1-2张力大的一侧的导向天轮2-1由于向下运动使相应的提升钢丝绳1-2的长度变小而减小了其张力,平衡了由于该提升钢丝绳1-2下放过程释放距离相对过少或上升过程缠绕距离相对过多导致的提升钢丝绳1-2相对增加的张力;相反,提升钢丝绳1-2张力小的一侧的导向天轮2-1由于向上运动使相应的提升钢丝绳1-2的长度变大而增大了其张力,平衡了由于该提升钢丝绳1-2下放过程释放距离相对过多或上升过程缠绕距离相对过少导致的提升钢丝绳相对减少的张力;由于平衡钢丝绳3-1内各处的张力时刻保持相同,因此施加在两组滑动导向天轮2的拉力相同,从而相应的滑动导向天轮2上的提升钢丝绳1-2的张力保持相同,最终实现多根提升钢丝绳1-2张力自动均衡。
工作原理:
深立井提升系统运行过程中出现钢丝绳张力不平衡状态时,由于各绳张力不同,所以加载在导向天轮2-1上的力也不一致,导致导向天轮2-1在滑轨2-4方向上滑动,各导向天轮2-1高低位置不同;同时,与导向天轮2-1同轴的动滑轮2-1与顶梁2-1上的定滑轮2-1组成的滑轮组系统发生了动态的变化;
当静止时,导向天轮2-1处于平衡状态,竖直方向上受力平衡,即下端所受提升钢丝绳1-2的拉力与上端所受平衡钢丝绳3-1的拉力相同。由于上端平衡钢丝绳3-1为穿过滑轮组系统的一条钢丝绳,绳上拉力一致,所以每个导向天轮2-1上方所受拉力一致,固下方拉力也一致,即提升钢丝绳1-2张力平衡。

Claims (4)

  1. 一种深立井多绳提升钢丝绳张力自动均衡装置,包括驱动系统(1),其特征在于:所述驱动系统(1)上设有可以上下运行的两组滑动导向天轮(2),两组滑动导向天轮(2)上连接有张力平衡机构(3);
    所述的滑动导向天轮(2)包括导向天轮(2-1)、固定导向天轮(2-1)的轴(2-2)、与导向天轮(2-1)同轴的动滑轮(2-3),导向天轮(2-1)与动滑轮(2-3)均绕轴(2-2)转动;导向天轮(2-1)的两侧竖直布置有滑轨(2-4),轴(2-2)的两端设有与滑轨(2-4)相吻合的滑块(2-5),滑块(2-5)上设有可以在滑轨内运动的滚动导靴(2-6);
    所述的张力平衡机构(3)包括平衡钢丝绳(3-1)、固定在井道梁架上的顶梁(3-3),顶梁(3-3)上固定有两排定滑轮(3-2),所述的平衡钢丝绳(3-1)一端固定在顶梁(3-3)上,另一端依次绕过动滑轮(2-3)和定滑轮(3-2)后固定在顶梁(3-3)上。
  2. 根据权利要求1所述的深立井多绳提升钢丝绳张力自动均衡装置,其特征在于:所述的导向天轮(2-1)为2个。
  3. 根据权利要求1所述的深立井多绳提升钢丝绳张力自动均衡装置,其特征在于:所述的动滑轮(2-3)设在导向天轮(2-1)两侧,对称布置,每一侧各有两个。
  4. 一种使用权利要求1、2或3所述装置的深立井多绳提升钢丝绳张力自动均衡方法,其特征在于包括如下步骤:
    a.开始工作前,由于张力平衡机构(3)中的平衡钢丝绳(3-1)内各处的张力时刻保持相同,缠绕在两组滑动导向天轮(2)上的动滑轮(2-3)与定滑轮(3-2)上的平衡钢丝绳(3-1)作用下,使两组滑动导向天轮(2)上相应的动滑轮(2-3)受到平衡钢丝绳(3-1)的相同的拉力,即施加在两组滑动导向天轮(2)的拉力相同,从而保持提升钢丝绳间的张力平衡。
    b.工作过程中,当深立井提升系统运行过程中出现其中一根提升钢丝绳相对另一根提升钢丝绳在下放或上升过程中释放或缠绕距离不同而形成提升钢丝绳(1-2)张力不平衡状态时,其中一根张力增大的提升钢丝绳(1-2)施加在其中一组滑动导向天轮(2)相应的导向天轮(2-1)上,由于其压力大于平衡钢丝绳(3-1)通过缠绕在相应的动滑轮(2-3)上而形成的拉力,使该导向天轮(2-1)在两侧滑轨(2-4)内相对向下运动;另一根张力变小的提升钢丝绳(1-2)施加在另一组滑动导向天轮(2)相应的导向天轮(2-1)上,由于其压力小于平衡钢丝绳(3-1)通过缠绕在相应的动滑轮(2-3)上而形成的拉力,使该导向天轮(2-1)在两侧滑轨(2-4)内相对向上运动。
    c.在两组导向天轮(2-1)各自相对运动过程中,提升钢丝绳(1-2)张力大的一侧的导向天轮(2-1)由于向下运动使相应的提升钢丝绳(1-2)的长度变小而减小了其张力,平 衡了由于该提升钢丝绳(1-2)下放过程释放距离相对过少或上升过程缠绕距离相对过多导致的提升钢丝绳(1-2)相对增加的张力;相反,提升钢丝绳(1-2)张力小的一侧的导向天轮(2-1)由于向上运动使相应的提升钢丝绳(1-2)的长度变大而增大了其张力,平衡了由于该提升钢丝绳(1-2)下放过程释放距离相对过多或上升过程缠绕距离相对过少导致的提升钢丝绳相对减少的张力;由于平衡钢丝绳(3-1)内各处的张力时刻保持相同,因此施加在两组滑动导向天轮(2)的拉力相同,从而相应的滑动导向天轮(2)上的提升钢丝绳(1-2)的张力保持相同,最终实现多根提升钢丝绳(1-2)张力自动均衡。
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