The utility model relates to a rotary impact mechanism of a pneumatic rockbolt machine, which comprises a frame, in which a main shaft, a gearbox, a cylinder, a piston, a rotary motor, a gas distribution valve and a cylinder bottom cover are arranged from top to bottom, an air inlet B is arranged on the frame, the air inlet is connected with the rotary motor, the output end of the rotary motor is connected with the input end of the gearbox, the output end of the gearbox is connected with the main shaft, and the frame is also provided with an output end Air hole a and the top of the main shaft are connected with the drill rod. It has two functions of the rotary mechanism of the pneumatic rock bolter and the impact mechanism of the pneumatic rock drill. It integrates the advantages of the current rock bolter and the rock drill. It realizes that when working in the coal roadway and soft rock, drilling in the rotary way can give full play to the characteristics of high rotation efficiency. When there is a hard rock interlayer in the surrounding rock, the rock burst method is used, which is effective The problem of drilling under the condition of complex surrounding rock roof is solved. The rotation and impact of the pneumatic rock bolt drill can be independent, and can be combined into one. The comprehensive working efficiency of the pneumatic rock bolt drill is several times higher than that of the rotary drill or rock drill used now.
【技术实现步骤摘要】
一种气动锚杆机的回转冲击机构
本技术涉及煤巷和软岩作业设备,尤其是一种集现行锚杆钻机、凿岩机优点为一体的气动锚杆机的回转冲击机构。
技术介绍
传统气动锚杆钻机:传统气动锚杆钻机通过改变锚杆钻机支腿和操纵臂的高度和长度来适用不同的巷道要求,是一种必备的采矿支护机具,但普通锚杆机仅具有回转切削钻孔功能,当遇到围岩中有硬岩夹层时,推进速度瞬间降低,严重影响打钻效率,甚至无法钻进。传统气动锚杆钻机回转器部分由回转器由马达、齿轮箱、主轴等组成。工作原理如图1,压缩空气由A点进入马达9驱动马达内部齿轮运转,经齿轮箱6两级减速之后带动主轴2实现回转,然后压缩气体由B点排出。传统凿岩机用于矿山开采,巷道掘进机各种凿岩作业。是冶金、煤炭、铁路、交通、水利、基建和国防石方工程中的重要机具,适用于中硬岩凿进打孔。适用中硬岩钻进,凿进速度慢,在软煤层中不适用。传统凿岩机冲击部分由配气阀、活塞、缸体等组成。工作原理如图2,压缩空气由A点进入配气阀10气体推动活塞8向缸体7右端移动实现冲击运动,气体由B点排出,当活塞位置处于最右端时,配气阀通过缸体7下方气路实现换向,如此反复实现冲击动作。上述两设备具有以下缺点:1、传统气动锚杆钻机当遇到围岩中有硬岩夹层时,推进速度瞬间降低,严重影响打钻效率,虽然能保持较高的转速,但动作单一难以冲破煤层中硬岩夹层。2、传统气动凿岩机冲击功大,易冲破较硬岩石但钻进效率或速度低,能量利用率低,而且随着孔深的增加,钻速显著下降,钻进速度噪音大,冲击过程中机身振动大影响操 ...
【技术保护点】
1.一种气动锚杆机的回转冲击机构,其特征在于,包括机架,机架内从上至下设置有主轴、齿轮箱、气缸、活塞、回转马达、配气阀及气缸底盖,机架上设置有进气口B,进气孔与回转马达相通,回转马达的输出端连接齿轮箱的输入端,齿轮箱的输出端连接主轴,机架上还设置有出气孔A,主轴顶端连接钎杆;/n底盖上设置有压缩空气进口,压缩空气依次经过配器法并进入气缸,活塞设在气缸内,压缩空气推动活塞移动,机架上还设置有气缸排气口C,气缸上设置有排气道,排气道与排气口C相连,所述主轴与机架之间设置有用于降震的减振弹簧、缓冲套及碟簧。/n
【技术特征摘要】
1.一种气动锚杆机的回转冲击机构,其特征在于,包括机架,机架内从上至下设置有主轴、齿轮箱、气缸、活塞、回转马达、配气阀及气缸底盖,机架上设置有进气口B,进气孔与回转马达相通,回转马达的输出端连接齿轮箱的输入端,齿轮箱的输出端连接主轴,机架上还设置有出气孔...
【专利技术属性】
技术研发人员:白伟杰,宋建锋,邢沛涛,王建涛,陈浩宁,王博,
申请(专利权)人:冀凯河北机电科技有限公司,
类型:新型
国别省市:河北;13
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