The utility model discloses an embedded front mud door, which comprises a door plate, a hydraulic cylinder, a slideway, a grease joint and a separator. The upper part of the separator is fixedly connected with the shield body, a slideway is arranged on both sides of the separator, a guide groove is arranged between the slideway and the separator, and the front side of the door plate is sliding connected with the guide groove, and the front side of the door plate does not exceed the front side of the separator; one end of the hydraulic cylinder is connected with the shield body It is connected with the back of the door plate. The back of the separator is connected with an oil joint. The interior of the separator is provided with an oil channel. The oil joint is connected with the oil channel. The door plate is provided with an oil cavity, and the oil channel is connected with the oil cavity. The front face of the door plate of the utility model does not exceed the front face of the partition plate, which reduces the impact and wear of the slag on the door plate. The slideway adopts wear-resistant materials to improve the wear resistance of the slideway; the door plate is arranged in front of the partition plate, at the same time, the grease seal is arranged to improve the sealing effect of the mud door; after the mud door is closed, a safety pin is arranged to improve the safety of the operation in the warehouse. The utility model has the advantages of simple structure, high safety and strong practicability.
【技术实现步骤摘要】
一种内嵌式前置泥浆门
本技术涉及间接控制式泥水盾构机
,特别是指一种内嵌式前置泥浆门。
技术介绍
当前的隧道施工中,泥水盾构机因其承压能力高、地表沉降控制精度高、隧道环境卫生等特点广泛用于穿江越海、下穿重要建构筑物、高水压等情况下的公路和铁路隧道项目。泥水盾构主要有两种类型:直接控制式和间接控制式。间接控制式泥水盾构通过隔板将前盾分为泥水仓和气垫仓,隔板下部设置有泥浆门,通过泥浆门的开闭来实现泥水仓与气垫仓的连通与否。在盾构机正常掘进时,泥浆门处于打开状态,气垫仓上部充满压力空气,具有压力的空气作用于下部泥浆,然后通过泥浆门将压力传递到泥水仓内的泥浆形成压力泥浆,从而平衡掌子面的水土压力。当需要进入气垫仓进行检修作业时,通过关闭泥浆门,可隔开气垫仓和泥水仓,然后对气垫仓进行降压,甚至可达到常压环境,从而提高作业的安全性及作业效率。由此可见,泥浆门在检修作业时具有至关重要的作用。常规泥浆门布置在隔板后部,叫做后置式泥浆门,这种泥浆门在关闭后,气垫仓降压时,泥水仓压力大于气垫仓压力,泥浆门处于压开状态,密封效果较差,可能出现气垫仓漏浆现象,一方面影响气垫仓内作业环境,另一方面甚至影响掌子面的稳定。如果单纯的将泥浆门布置在隔板前部,在气垫仓降压时,泥浆门处于压紧状态,密封效果虽然较好,但是泥浆门凸出隔板,泥水仓内的渣土会导致泥浆门的撞击和磨损,影响泥浆门的结构强度,带来风险。
技术实现思路
本技术针对泥浆门密封效果不佳、门板易磨损的问题,提出了一种内嵌式前置泥浆门,既提高了密封性能,又降低了泥浆门的磨损。本技术的技术方案是这样实现的:一种内嵌式前置泥浆门,包括门板 ...
【技术保护点】
1.一种内嵌式前置泥浆门,其特征在于:包括门板(3)、液压油缸(4)、滑道(5)、油脂接头(7)和隔板(9),隔板(9)上部与盾体固定连接,隔板(9)两侧设有滑道(5),滑道(5)与隔板(9)之间设有导向槽,门板(3)两侧与导向槽滑动连接,门板(3)的正面未超出隔板(9)的正面;液压油缸(4)一端与盾体连接、另一端与门板(3)背面连接,隔板(9)的背面连接有油脂接头(7),隔板(9)内部设有油道,油脂接头(7)与油道连通,门板(3)设有油脂腔,油道与油脂腔连通。
【技术特征摘要】
1.一种内嵌式前置泥浆门,其特征在于:包括门板(3)、液压油缸(4)、滑道(5)、油脂接头(7)和隔板(9),隔板(9)上部与盾体固定连接,隔板(9)两侧设有滑道(5),滑道(5)与隔板(9)之间设有导向槽,门板(3)两侧与导向槽滑动连接,门板(3)的正面未超出隔板(9)的正面;液压油缸(4)一端与盾体连接、另一端与门板(3)背面连接,隔板(9)的背面连接有油脂接头(7),隔板(9)内部设有油道,油脂接头(7)与油道连通,门板(3)设有油脂腔,油道与油脂腔连通。2.根据权利要求1所述的内嵌式前置泥浆门,其特征在于:所述隔板(9)下部连接有耳座,耳座与安全销(8)活动连接,门板(3)的背面设有凹...
【专利技术属性】
技术研发人员:卓兴建,张鹏豪,周永举,王静,贺开伟,叶超,赵齐兼,白岩龙,
申请(专利权)人:中铁工程装备集团有限公司,
类型:新型
国别省市:河南,41
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