Document Information

Parts Manual

This official Parts Manual is designed for LGMG (SDLG) Cracked Aerial Work Platform. The manual is intended to help users and maintenance personnel to understand the structure of the equipment, the assembly of components in a systematic manner and to provide an accurate inventory of original plant components /a> { let step = 0; // 分阶段控制进度增长速度 if (progress < 20) { step = Math.random() * 0.5; // 前期（连接/下载初始化）极慢 } else if (progress < 70) { step = Math.random() * 2; // 中期（下载文件）中等速度 } else if (progress < 95) { step = Math.random() * 0.8; // 后期（解析渲染）慢 } else { step = Math.random() * 0.2; // 最后5%极慢 } progress += step; if (progress >= 99.9) { progress = 99.9; // 停在99.9%，等PDF真加载完再到100% clearInterval(progressTimer); } // 更新进度条和百分比 const progressPercent = Math.floor(progress); loadingPercentage.textContent = `${progressPercent}%`; progressBar.style.width = `${progressPercent}%`; }, 200); } // 轮询检测PDF是否真的加载完成 function checkPdfReady() { checkPdfReadyTimer = setInterval(() => { try { // 访问iframe内部DOM（同域场景） const iframeDoc = pdfIframe.contentDocument || pdfIframe.contentWindow.document; // pdfjs的页面容器和自带加载条 const pdfContainer = iframeDoc.querySelector('#viewerContainer .page'); const loadingBar = iframeDoc.querySelector('.loadingBar'); // 判定条件：有PDF页面元素且自带加载条消失 if (pdfContainer && !loadingBar) { // 完成最后1%进度 progress = 100; loadingPercentage.textContent = `100%`; progressBar.style.width = `100%`; // 显示"完成"状态 setTimeout(() => { loadingPercentage.innerHTML = 'Finish'; // 延迟隐藏加载卡片 setTimeout(() => { loadingCard.style.opacity = '0'; loadingCard.style.transform = 'scale(0.95)'; loadingCard.style.pointerEvents = 'none'; // 隐藏遮罩层 setTimeout(() => { loadingMask.style.display = 'none'; }, 300); }, 800); }, 500); clearInterval(checkPdfReadyTimer); } } catch (e) { console.log('跨域无法访问iframe内部，进度条将按超时逻辑处理'); } }, 500); } // 启动进度模拟 startProgressSimulation(); // 等iframe加载完（viewer.html）后开始检测PDF状态 pdfIframe.onload = function() { setTimeout(checkPdfReady, 500); }; // 容错：60秒超时处理 setTimeout(() => { if (progress < 100) { progress = 100; loadingPercentage.textContent = `100%`; progressBar.style.width = `100%`; setTimeout(() => { loadingPercentage.innerHTML = '完成'; setTimeout(() => { loadingCard.style.opacity = '0'; loadingCard.style.transform = 'scale(0.95)'; loadingCard.style.pointerEvents = 'none'; setTimeout(() => { loadingMask.style.display = 'none'; }, 300); }, 800); }, 500); clearInterval(progressTimer); clearInterval(checkPdfReadyTimer); } }, 60000); // 60秒超时，可调整