CN202483581U - 一种改变后角的盾构机切刀 - Google Patents

一种改变后角的盾构机切刀 Download PDF

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CN202483581U
CN202483581U CN2012200769782U CN201220076978U CN202483581U CN 202483581 U CN202483581 U CN 202483581U CN 2012200769782 U CN2012200769782 U CN 2012200769782U CN 201220076978 U CN201220076978 U CN 201220076978U CN 202483581 U CN202483581 U CN 202483581U
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cutter
tunneling machine
relief angle
shield tunneling
cutting knife
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CN2012200769782U
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张照煌
王磊
李福田
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North China Electric Power University
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North China Electric Power University
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Abstract

本实用新型属于盾构机切刀设备,特别涉及一种改变后角的盾构机切刀。所述切刀的后角
Figure DDA0000140377710000011
其中,φ为切刀刃角,α为该切刀的刀刃中点侵入土体的速度矢量方向角,且
Figure DDA0000140377710000012
V为盾构机掘进速度,ω为盾构刀盘转动速度,Ri为切刀的安装半径,该切刀在盾构机上用作切削刀或超前刀,适用于切削岩土互层、土体中含有砂砾的地层。这样确定的切刀后刃角提高了切刀的自锐性、减小了其切削阻力,降低了切刀切削中的能量消耗,从而提高了切刀寿命。初步估算可降低切刀消耗量11%左右,有效提高了盾构机利用率。

Description

一种改变后角的盾构机切刀
技术领域
本实用新型属于盾构机切刀设备,特别涉及一种改变后角的盾构机切刀及其应用。
背景技术
目前盾构机刀盘上安装的切刀在使用中存在崩刃、不正常磨损、消耗量大及掘进中途损坏等不足,造成了极大地浪费,影响工程效率,因而切刀的设计理念需不断完善,从而提高盾构机切刀设计的整体水平。
发明内容
本实用新型针对盾构机刀盘上安装的切刀在使用中存在崩刃、不正常磨损、消耗量大及掘进中途损坏等不足,提供了一种改变后角的盾构机切刀。v本实用新型所述的盾构机切刀的特征为,该切刀的后角
Figure BDA0000140377690000011
其中,φ为切刀刃角,α为该切刀的刀刃中点侵入土体的速度矢量方向角,且
Figure BDA0000140377690000012
V为盾构机掘进速度,ω为盾构刀盘转动速度,Ri为切刀的安装半径。
本实用新型所述的改变后角的盾构机切刀,在盾构机上用作切削刀或超前刀,适用于切削岩土互层、土体中含有砂砾的地层。
本实用新型的有益效果为:通过改变切刀后角,增加了切刀的“自锐性”,减小了切刀的崩刃、不正常磨损的现象,提高了切刀寿命,初步估算可降低切刀消耗量11%左右,从而有效提高盾构机利用率。
附图说明
图1为切刀在刀盘上安装主视图;
图2为切刀在刀盘上安装俯视图。
具体实施方式
本实用新型提供了一种改变后角的盾构机切刀,下面通过附图和具体实施方式对本实用新型做进一步说明。
如图1和图2所示,本实用新型所述的盾构机切刀的特征为,该切刀的后角
Figure BDA0000140377690000021
其中,φ为切刀刃角,α为该切刀的刀刃中点侵入土体的速度矢量方向角,且
Figure BDA0000140377690000022
V为盾构机掘进速度,ω为盾构刀盘转动速度,Ri为切刀的安装半径。
本实用新型所述的改变后角的盾构机切刀,在盾构机上用作切削刀或超前刀,适用于切削岩土互层、土体中含有砂砾的地层。

Claims (1)

1.一种改变后角的盾构机切刀,其特征在于,所述切刀的后角
Figure FDA0000140377680000011
其中,φ为切刀刃角,α为该切刀的刀刃中点侵入土体的速度矢量方向角,且V为盾构机掘进速度,ω为盾构刀盘转动速度,Ri为切刀的安装半径。
CN2012200769782U 2012-03-02 2012-03-02 一种改变后角的盾构机切刀 Expired - Fee Related CN202483581U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102704942A (zh) * 2012-03-02 2012-10-03 华北电力大学 一种改变后角的盾构机切刀及其应用

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102704942A (zh) * 2012-03-02 2012-10-03 华北电力大学 一种改变后角的盾构机切刀及其应用

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