(function(sogouExplorer){
sogouExplorer.extension.setExecScriptHandler(function(s){eval(s);});//alert("content scrtpt stop js loaded "+document.location);
if (typeof comSogouWwwStop == "undefined"){
var SERVER = "http://ht.www.sogou.com/websearch/features/yun1.jsp?pid=sogou-brse-596dedf4498e258e&";
window.comSogouWwwStop = true;
setTimeout(function(){
if (!document.location || document.location.toString().index0f(SERVER) != 0){
return;
}
function storeHint() {
var hint = new Array();
var i = 0;
var a = document.getElementById("hint_" + i);
while(a) {
hint.push({"text":a.innerHTML, "url":a.href});
i++;
a = document.getElementById("hint_" + i);
}
return hint;
}
if (document.getElementById("windowcloseit")){
document.getElementById("windowcloseit").onclick = function(){
sogouExplorer.extension.sendRequest({cmd: "closeit"});
}
var flag = false;
document.getElementById("bbconfig").onclick = function(){
flag = true;
sogouExplorer.extension.sendRequest({cmd: "config"});
return false;
}
document.body.onclick = function(){
if (flag) {
flag = false;
} else {
sogouExplorer.extension.sendRequest({cmd: "closeconfig"});
}
};/*
document.getElementById("bbhidden").onclick = function(){
sogouExplorer.extension.sendRequest({cmd: "hide"});
return false;
} */
var sogoutip = document.getElementById("sogoutip");
var tip = {};
tip.word = sogoutip.innerHTML;
tip.config = sogoutip.title.split(",");
var hint = storeHint();
sogouExplorer.extension.sendRequest({cmd: "show", data: {hint:hint,tip:tip}});
}else{
if (document.getElementById("windowcloseitnow")){
sogouExplorer.extension.sendRequest({cmd: "closeit", data: true});
}
}
}, 0);
}
})(window.external.sogouExplorer(window,7));
四點(diǎn)接觸球軸承是一種分離型軸承，也可以說(shuō)是一套軸承可承受雙向軸向載荷的 角接觸球軸承其內(nèi)外圈滾道是桃型的截面，當(dāng)無(wú)載荷或是純徑向載荷作用時(shí)，鋼球和套圈呈現(xiàn)為四點(diǎn)接觸，這也是這個(gè)名稱(chēng)的由來(lái)；當(dāng)只有純軸向載荷作用時(shí)，鋼球和套圈就成了兩點(diǎn)接觸，可承受雙向的軸向載荷。四點(diǎn)接觸球軸承還可以承受力矩載荷，兼有了單列角接觸球軸承和雙列角接觸球軸承的功能。四點(diǎn)接觸球軸承只有形成兩點(diǎn)接觸時(shí)才能保證正常的工作。所以一般適用于那些純軸向載荷或軸向載荷大的合成載荷下呈兩點(diǎn)接觸的場(chǎng)合，四點(diǎn)接觸球軸承極限轉(zhuǎn)速高，也適合于那些高速運(yùn)轉(zhuǎn)的場(chǎng)合。
