会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Self-advancing mine roof supports
    • 自行开采的屋顶支撑
    • US3991578A
    • 1976-11-16
    • US560723
    • 1975-03-21
    • John CookeDerek Alker
    • John CookeDerek Alker
    • E21D23/16E21D15/58E21D23/26E21D15/44F15B21/02
    • E21D15/585E21D23/26
    • A control means, for a mine roof support having hydraulically extensible prop means and some other pressure-fluid-operated component (e.g. a hydraulic ram for advancing the support), comprises a control valve having selectable positions in one of which (the prop extend position) it will select for a supply of hydraulic pressure-fluid to said prop means. The control means also include a valve device having a position in which it will provide for a supply of pressure-fluid to the prop means and having means adapted to cause it to move to that position, when the control valve is operated to the prop extend position, and to keep it in that position even position. the control valve is operated from the prop extend positon. By this arrangement a pressure-fluid supply to the prop means will still be maintained so as to ensure proper setting thereof and to make up any leakage of fluid. The operation of the control valve from the prop extend position may be, for example, to bring it into a neutral position or to a position in which pressure-fluid is supplied to the advancing ram of the support.In one preferred embodiment of the invention the valve device has a pressure-fluid responsive movable member and is adapted to be connected, for its operation, to a pressure-fluid supply via the control valve.
    • 对于具有液压可伸长支撑装置和一些其它压力流体操作部件(例如,用于推进支撑件的液压柱塞)的矿山屋顶支撑件的控制装置包括控制阀,该控制阀具有可选择的位置,其中一个(支撑延伸位置 )将选择供应液压压力流体到所述支承装置。 控制装置还包括一个阀门装置,该阀装置具有一个位置,在该位置中,它将提供压力流体供给支承装置并具有适于使其移动到该位置的装置,当控制阀被操作到支柱延伸 的位置,并保持在这个位置即使位置。 控制阀从支柱延伸位置操作。 通过这种布置,仍然保持对支柱装置的压力流体供应,以确保其适当的设定并弥补流体的任何泄漏。 控制阀从支柱延伸位置的操作可以是例如使其进入中间位置或将压力流体供应到支撑件的推进柱塞的位置。
    • 6. 发明授权
    • Mine roof supports
    • 矿顶支撑
    • US4797023A
    • 1989-01-10
    • US51784
    • 1987-05-20
    • Roy Park
    • Roy Park
    • E21D23/00E21D23/04E21D15/44
    • E21D23/04E21D23/0039
    • A mine roof support has a roof engaging canopy 23, a floor engaging base 12, and a hydraulic jack 24 acting between the canopy and the base for urging the canopy and the base apart. The hydraulic jack 24 is provided with at least two different locations, movement of the jack means 24 from one location to another location bringing about an alteration in the distance between the canopy and the base. The invention makes it possible to provide a hydraulic jack having a first working position in which the hydraulic jack is arranged in the optimum position to support a mine roof, and a second stowing position for transportation purposes.
    • 矿山屋顶支撑具有屋顶接合顶篷23,地板接合基座12和作用在顶篷和基座之间的液压千斤顶24,用于推动舱盖和基座分开。 液压千斤顶24设置有至少两个不同的位置,千斤顶装置24从一个位置移动到另一个位置,从而引起冠层和基座之间的距离的改变。 本发明使得可以提供具有第一工作位置的液压千斤顶,其中液压千斤顶布置在支撑矿顶的最佳位置,以及用于运输目的的第二收起位置。
    • 7. 发明授权
    • Mine roof supports
    • 矿顶支撑
    • US4062194A
    • 1977-12-13
    • US657936
    • 1976-02-13
    • Archelaius Dawson Allen
    • Archelaius Dawson Allen
    • E21D23/06E21D15/44
    • E21D23/06
    • A roof-engaging assembly for a mine roof support having prop or jack means to engage and support the roof-engaging assembly, comprises a rigid part to engage said prop or jack means, and a roof-engaging part positioned over and resiliently urged away from the rigid part. Preferably the rigid part has a roof-engaging face and a relatively stepped or recessed face below the roof-engaging face, the roof-engaging part being positioned over and resiliently urged away from the stepped or recessed face and towards positions above the roof-engaging face of the rigid part.
    • 一种用于具有用于接合和支撑屋顶接合组件的支撑或千斤顶装置的矿山屋顶支撑件的屋顶接合组件,包括用于接合所述支柱或千斤顶装置的刚性部分,以及顶部接合部分,其位于上方并且被弹性地推动远离 刚性部分。 优选地,刚性部分具有屋顶接合面和位于屋顶接合面下方的相对阶梯或凹入的表面,屋顶接合部分被定位在顶部并且被弹性地推动离开阶梯或凹入的面并且朝向屋顶接合 面对刚性部分。
    • 10. 发明授权
    • Drive frame for a scraper chain conveyor
    • 用于刮板链式输送机的驱动框架
    • US4953692A
    • 1990-09-04
    • US284102
    • 1988-12-14
    • Brian R. StoppaniNorman Cummings
    • Brian R. StoppaniNorman Cummings
    • B65G19/28
    • B65G19/285
    • A drive frame (1) for a scraper chain conveyor comprises a pair of spaced-apart parallel sidewalls (2), interconnected by a cross-member (3) welded to both sidewalls (2); a sprocket barrel assembly (18) provided with at least one sprocket ring (19) adapted to engage at least one endless chain assembly of the conveyor; mutually engageable seating surfaces (23, 5) provided respectively on the sprocket barrel assembly (18) and on the cross-member (3); at least one abutment face (7) provided on the cross-member (3); at least one abutment face (26) provided on the sprocket barrel assembly (18) in close but spaced proximity from the cross-member abutment face (7) to define at least one upwardly open pocket (27); and a releasable fastener (28) for securing the sprocket barrel assembly (18) to the drive frame (1) via the seating surfaces (5, 23) that is lowerable into, and raisable from, the pocket (27), and that is also actuable and accessible from above.
    • 用于刮板链式输送机的驱动框架(1)包括一对间隔开的平行侧壁(2),其通过焊接到两个侧壁(2)的横向构件(3)互连; 设置有至少一个链轮环(19)的链轮筒组件(18),所述至少一个链轮环适于与所述输送机的至少一个环形链组件接合; 分别设置在链轮筒组件(18)和横向构件(3)上的相互接合的座面(23,5); 设置在横梁(3)上的至少一个邻接面(7); 设置在所述链轮筒组件(18)上的至少一个邻接面(26),所述至少一个邻接面(26)处于与所述横向构件邻接面(7)紧密但间隔开的位置,以限定至少一个向上开口的口袋(27); 以及可释放的紧固件(28),用于经由可口袋(27)可降入并可从其升起的座面(5,23)将链轮筒组件(18)固定到驱动框架(1),即, 也可以从上方进入。