混凝土輸送泵S管閥雙缸驅(qū)動換向系統(tǒng)機(jī)構(gòu)設(shè)計（本科畢業(yè)論文設(shè)計）
摘 要

混凝土輸送泵S管閥雙缸驅(qū)動換向系統(tǒng)就是通過利用液壓傳動以實現(xiàn)快速切換S管閥方向。本文主要介紹了混凝土泵S型管的分配閥的工作性能，換向系統(tǒng)的機(jī)構(gòu)特點(diǎn)及工作性能，液壓系統(tǒng)的原理及要求。
該設(shè)計主要介紹混凝土泵S型管分配閥的工作性能，換向系統(tǒng)的結(jié)構(gòu)特點(diǎn)及工作性能，液壓系統(tǒng)的工作要求和原理。
作為分配閥的S型管，在工作過程中，承受著較大工作載荷，混凝土泵要求S管在0.2秒-0.3秒的短暫時間內(nèi)，完成一次換向動作，在這種情況下，就對液壓系統(tǒng)提出了更高的要求。
在換向動作設(shè)計中，液壓缸的設(shè)計是關(guān)鍵，該設(shè)計采用雙柱塞式液壓缸，并采用球頭聯(lián)接，能夠有效保證換向動作的穩(wěn)定性要求。考慮到緩沖，該設(shè)計將液壓缸底、缸頭采用了特殊的設(shè)計方法。再考慮到工作裝置工況差的特點(diǎn)，該設(shè)計還設(shè)計了防沙漿進(jìn)入的有效密封系統(tǒng)。


關(guān)鍵詞：混凝土泵，S型管閥，密封，潤滑

ABSTRACT

These article designs of the commutation system of the concrete delivery pump S tube valve are through using the hydraulic transmission two characteristics to cut the S tube valve direction fast.
This design main introduce the pumpcrete machine S tube operating valve operating performance, unique feature of the commutation system and operating performance, working requirement and principle of the hydraulic system.
As the operating valve S valve, in the work process, withstands the big work load, the pumpcrete machine is requesting the S tube in 0.2 seconds-0.3 seconds short time to completes a commutation movement, in this case, the request set a higher request to the hydraulic system.
In the commutation movement designing, the hydraulic cylinder design is the key, this article uses the double-acting piston single hydraulic cylinder, and uses a ball joint. This system can guarantee the stable request of the commutation movement effectively. Considered the cushion, this design make the cylinder bottom, cylinder have used the special design method. Considering operating in bad characteristic of the work installment, this article also has guarded against the effective full-pressure system which prevent the sand thick liquid from entering. Finally, this design can correct, the safe realization predetermined function.


Keywords: concrete delivery pump, S tube valve, hydraulic tanks sealed, lubrication

目 錄


中文摘要…………………………………………………………….Ⅰ
ABSTRACT……………………………………………………….....Ⅱ
1緒論………………………………………………………………....1
1.1 機(jī)械傳動式混凝土泵………………………………………………...1
1.2 液壓活塞式混凝土泵………………………………………………...1
1.3 混凝土泵的基本構(gòu)造………………………………………………...2
1.4 混凝土泵的工作原理………………………………………………...3
1.5 混凝土泵的分配閥………………………………………………......4
1.5.1 蝶形分配閥…………………………………………………….4
1.5.2 斜置式閘板閥………………………………………………......5
1.5.3 S形管閥……………………………………………………….5
2 S管分配閥的結(jié)構(gòu)設(shè)計與負(fù)載計算………………………………7
2.1 S管的設(shè)計………………………………………………………....8
2.2 S管的密封………………………………………………………...12
2.3 S管擺動阻力矩…………………………………………………….14
3 液壓缸的結(jié)構(gòu)設(shè)計計算…………………………………………..23
3.1 液壓缸的設(shè)計步驟………………………………………………….23
3.2 液壓缸性能參數(shù)的計算……………………………………………...23
3.2.1 液壓缸的輸出力………………………………………………..23
3.2.2 液壓缸的工作壓力……………………………………………...24
3.2.3 液壓缸的內(nèi)徑………………………………………………….24
3.2.4 液壓缸的行程………………………………………………….24
3.2.5 液壓缸的作用時間……………………………………………...25
3.2.6 液壓缸的輸出速度……………………………………………...25
3.2.7 進(jìn)入液壓缸的流量……………………………………………...25
3.2.8 液壓缸的輸出功率……………………………………………...26
3.3 液壓缸結(jié)構(gòu)參數(shù)的計算……………………………………………...26
3.3.1 缸筒的壁厚計算………………………………………………..26
3.3.2 液壓缸油口直徑的計算………………………………………….26
3.3.3 缸頭厚度的計算………………………………………………..26
3.3.4 液壓缸導(dǎo)向尺寸的確定………………………………………….26
3.3.5 液壓缸緩沖裝置的設(shè)計………………………………………....27
3.3.6 液壓缸的校核…………………………………………………27
4 蓄能器的計算與選擇…………………………………………….29
4.1 蓄能器的功用……………………………………………………..29
4.2 蓄能器的種類……………………………………………………..29
4.3 蓄能器容量的計算…………………………………………………29
5 混凝土泵的液壓系統(tǒng)設(shè)計……………………………………….31
6 換向機(jī)構(gòu)結(jié)構(gòu)參數(shù)的設(shè)計計算………………………………….33
6.1 擺桿的結(jié)構(gòu)設(shè)計…………………………………………………...33
6.2 六邊形軸身的結(jié)構(gòu)設(shè)計……………………………………………..33
6.2.1 軸的結(jié)構(gòu)設(shè)計…………………………………………………34
6.2.2 危險截面的校核…………………..