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摘 要
目前，礦山廣泛使用的JH系列回柱絞車多是由JM慢速絞車演變而來的，具有速度低、結(jié)構(gòu)緊湊、牽引力大等特點(diǎn)。主要應(yīng)用于煤礦井下采煤工作面回柱放頂之用，同時(shí)也可用于上山、下山、平巷等綜采工作面設(shè)備的搬遷。由于它的高度較低重量又輕，特別適用于薄煤層和急傾斜煤層采煤工作面，以及各種采煤工作面回收沉入底板或被矸石壓埋的金屬支柱。
本次設(shè)計(jì)的JH-14型回柱絞車是在我去年畢業(yè)實(shí)習(xí)時(shí)所實(shí)踐的回柱絞車的基礎(chǔ)上，再查閱參考有關(guān)資料后結(jié)合我的一些想法所設(shè)計(jì)的。在減速器的設(shè)計(jì)過程中，主要采用了蝸輪蝸桿傳動(dòng)、雙聯(lián)滑移齒輪傳動(dòng)、圓柱齒輪傳動(dòng)等傳動(dòng)方式，利用撥叉撥動(dòng)小滑移雙聯(lián)齒輪的方式來實(shí)現(xiàn)變速，而且在撥叉的設(shè)計(jì)中，我采用了手柄搖動(dòng)轉(zhuǎn)盤的方式來實(shí)現(xiàn)撥叉的水平移動(dòng)。在設(shè)計(jì)卷筒時(shí)，考慮到卷筒設(shè)計(jì)精度要求不太高，因此將以往的卷筒通軸改為在卷筒兩端利用過盈配合及焊接的方式來分別固定軸，避免了材料的浪費(fèi)。
本次的設(shè)計(jì)主要特征就是能實(shí)現(xiàn)變速，既能滿足不同環(huán)境下絞車的使用，也實(shí)現(xiàn)絞車在回繩和放繩時(shí)可以利用不同的速度達(dá)到快速回柱。
關(guān)鍵詞：JH-14回柱絞車； 雙聯(lián)齒輪； 變速
ABSTRACT
At present, JH prop-drawing winch which evolved from JM Slow Speed Winch is widely in mine. This machine with advantage of slow speed, compact structure and big traction force. The prop-drawing winch is mainly used to prop drawing and caving roof in coal working face, but also can be used to relocate the equipment in fully mechanized coal face,such as uphill, downhill, and level gallery working face. Because of its low height and light weight, The prop-drawing winch is suitable for the thin coal seam and steep coal seam, and recovering the various metal pillar which Sinking into the floor or buried by gangue.
The JH-14 prop-drawing winch is designed based on my Practice on graduation practice last years and consulting large numbers of information, Which also combines many of my new ideas. The design process in the speed reducer, mainly used in the worm-gear transmission, double-slip gear transmission and column gear transmission etc transmission way. slide the small double-gear with the fork-lever to achieve Speed Change. But also in the fork-lever of the design, I used the handle shake rotary table to achieve the fork-lever horizontal movement. The prop-drawing winch drum in the design, taking into account the design precision need not too high,so I put a drum axis change into connection of drum and axis with interference fitting and welding in Both ends of the drum, reduced the Materials of axis, to avoid the waste of materials.
The main features of the design is to achieve speed change, it can satisfy the different working environment, but also to make the prop-drawing winch use different speeds to achieve the rapid return to prop drawing in the back rope and up rope.
Keywords：JH-14 prop-drawing winch；double-slip gear；speed change