標準編號:	GB/T 8511-2018
中文名稱:	振動壓路機
英文名稱:	Vibratory roller
中標分類:	P97    建筑工程施工機械
行業(yè)分類:	GB    國家標準
ICS分類:	53.100 53.100    土方機械 53.100
發(fā)布機構:	國家市場監(jiān)督管理總局 國家標準化管理委員會
發(fā)布日期:	2018-12-28
實施日期:	2019-7-1
標準狀態(tài):	valid
替代舊標準:	GB/T 8511-2005 振動壓路機
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	25000 字
翻譯價格(元):	1750.0
交付時間:	付款后 1 個工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 8511-2005 Vibratory roller. In addition to a number of editorial changes, the following technical changes have been made with respect to GB/T 8511-2005: ——The definition of amplitude uniformity is added (see 3.2); ——The product model preparation method is modified (see 4.2; 4.2 of Edition 2005); ——The series and corresponding parameters of roller operating mass are modified (see Tables 1, 2 and 3; Tables 2, 3 and 4 of Edition 2005); ——General requirements are modified (see 5.1; 5.1 of Edition 2005); ——Requirements for the operating mass of rollers are modified (see 5.2.1; 5.2.1 of Edition 2005); ——Requirements for the deviation of vibration frequency are modified (see 5.2.2; 5.2.2 of Edition 2005); ——Requirements for amplitude uniformity are added (see 5.2.2); ——Requirements for drive system are deleted (see 5.2.12 of Edition 2005); ——Requirements for operating force are modified (see 5.2.5; Table 5 of Edition 2005); ——Requirements for lubricating oil are deleted (see 5.2.7 of Edition 2005); ——The solid pollution cleanliness level of hydraulic oil is modified (see 5.2.7; 5.2.6 of Edition 2005); ——Climbing requirements are modified (see 5.2.8; 5.2.8 of Edition 2005); ——The minimum turning diameter is modified (see Table 1; Table 7 of Edition 2005); ——Requirements for oil/water seeping and leakage are modified (see 5.2.11; 5.2.14 of Edition 2005); ——Requirements related to safety and environmental protection are added (see 5.3; 5.3 of Edition 2005); ——Reliability indexes are modified (see 5.4.1; 5.4.1 of Edition 2005); ——Corresponding test methods are modified (see Clause 6; Clause 6 of Edition 2005); ——Table of inspection items is modified (see Table 4; Table 9 of Edition 2005); ——Inspection judgment rules are modified (see 7.4; 7.4 of Edition 2005); ——Requirements for marking, packaging, transportation and storage are modified (see Clause 8; Clause 8 of Edition 2005). This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee on Earth-moving Machinery of Standardization Administration of China (SAC/TC 334). The previous edition of this standard is as follows: ——GB/T 8511-2005. Vibratory roller 1 Scope This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of vibratory rollers (hereinafter referred to as rollers). It is applicable to self-propelled, towed and walk-behind rollers. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 7920.5 Earth-moving machinery - Rollers and landfill compactors - Terminology and commercial specification GB/T 8595 Earth-moving machinery - Operator's controls GB/T 10913 Earth-moving machinery - Determination of ground speed GB/T 14039-2002 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles GB 16710 Earth-moving machinery - Noise limits GB/T 16937 Earth-moving machinery - Operators field of view - Test method and performance criteria GB/T 18148 Earth-moving machinery - Testing method of the compaction performance of rollers and compactors GB/T 18826 1,1,1,2-Tetrafluoroethane (HFC-134a) for industrial use GB/T 20082 Hydraulic fluid power - Fluid contamination - Determination of particulate contamination by the counting method using an optical microscope GB 20178 Earth-moving machinery - Machine safety labels - General principles GB 20891 Limits and measurement methods for exhaust pollutants from diesel engines of non-road mobile machinery (CHINA III, IV) GB/T 21152 Earth-moving machinery - Braking systems of rubber-tyred machines - Systems and performance requirements and test procedures GB/T 22358 Earth-moving machinery - Preservation and storage GB/T 25602 Earth-moving machinery - Machine availability - Vocabulary GB/T 25606 Earth-moving machinery - Product identification numbering system GB/T 25609 Earth-moving machinery - Braking systems of pedestrian-controlled machines - Performance requirements and test procedures GB/T 25614 Earth-moving machinery - Determination of sound power level - Dynamic test conditions GB/T 25615 Earth-moving machinery - Determination of emission sound pressure level at operators position - Dynamic test conditions GB/T 25624 Earth-moving machinery - Operator seat - Dimensions and requirements GB 25684.1 Earth-moving machinery - Safety - Part 1: General requirements GB 25684.13 Earth-moving machinery - Safety - Part 13: Requirements for rollers JB/T 5945 Engineering machinery - General technical specifications for assembling JB/T 5946 Engineering machinery - General technical specifications for paint coating JB/T 5947 Engineering machinery - General technical specifications for packaging JB/T 9725 Earth-moving machinery - Method of type designation JG/T 5076.2 Checking standard for the isolating system of the vibratory rollers ISO 11500 Hydraulic fluid power - Determination of the particulate contamination level of a liquid sample by automatic particle counting using the light-extinction principle 3 Terms and definitions For the purposes of this standard, the terms and definitions specified in GB/T 7920.5 and GB/T 25602 as well as the following ones apply. 3.1 amplitude uniformity ratio of the absolute value of the difference between the amplitudes at both ends of the vibration wheel to the mean value of amplitudes at both ends 4 Classification 4.1 Form According to form, there are self-propelled, towed and walk-behind rollers. 4.2 Model The roller model should be prepared according to JB/T 9725 or by the manufacturer. 4.3 Basic parameters 4.3.1 The basic parameters of self-propelled rollers shall meet those specified in Table 1. Table 1 Basic parameters of self-propelled rollers Item Light type Medium type Heavy type Extra-heavy type Operating mass (m) kg 1 000≤m<6 000 6 000≤m<14 000 14 000≤m<24 000 m≥24 000 Diameter mm 400~1 000 800~1 650 ≥1 500 Width mm 500~1 300 1 100~2 150 ≥2 100 Vibration frequency Hz 33~70 25~70 20~40 Nominal amplitude mm 0.3~1.5 0.3~2.5 0.5~3.5 Exciting force kN ≥14 ≥30 ≥150 Ground clearance mm ≥160 ≥250 ≥355 Maximum running speed km/h ≤15 ≤25 ≤15 Minimum outside turning radius mm ≤6 000 ≤7 500 ≤8 000 Climbing capability % ≥20 4.3.2 The basic parameters of towed rollers shall meet those specified in Table 2. Table 2 Basic parameters of towed rollers Item Basic parameter Operating mass Kg 8 000-30 000 Vibration frequency Hz 20~50 Nominal amplitude mm 0.8~3.5 Exciting force kN 60~1 000 4.3.3 The basic parameters of walk-behind rollers shall meet those specified in Table 3. ? Table 3 Basic parameters of walk-behind rollers Item Basic parameter Operating mass kg 200~1 500 Vibration frequency Hz 30~70 Nominal amplitude mm 0.2~2.5 Exciting force kN 10~60 Running speed km/h ≤5 Climbing capability % ≥20 Curb clearance mm ≥75 5 Requirements 5.1 General requirements 5.1.1 The structural arrangement of a roller shall be convenient for use, repair, maintenance and adjustment. 5.1.2 The roller shall be in normal operation under the following conditions: ——ambient temperature: -10℃~+40℃; ——altitude: ≤ 2 000m. 5.1.3 All parts and components that need lubrication shall be equipped with lubrication devices that have reliable function and are easy of maintenance. 5.1.4 The mechanically-driven roller shall be comfortable to operate, e.g., realizing gear shift without clutch pedal. 5.1.5 The self-propelled roller should be equipped with traveling speed display devices. 5.1.6 The electrical system of the self-propelled roller equipped with cab shall have standard power supply interface for vehicles or rechargeable USB interface. 5.1.7 The seat of a roller shall comply with the requirements of GB/T 25624 and should be equipped with devices for adjusting height and rigidity according to weight. 5.1.8 When the roller is towed after the engine flames out, the steering mechanism should be able to change direction. 5.1.9 The fuel tank capacity of a roller with the operating mass of 8 000kg or more shall be able to meet the normal operation for more than 8h. 5.1.10 The assembly quality of a roller shall meet the requirement of JB/T 5945. 5.1.11 The coating quality of a roller shall meet the requirement of JB/T 5946. 5.2 Performance requirements 5.2.1 The operating mass of a roller shall meet those specified in Table 1, 2 or 3, and the allowable deviation shall be ±3% of the design value. 5.2.2 The vibration frequency shall meet those specified in Table 1, 2 or 3, and the allowable deviation shall be ±5% of the design value. The nominal amplitude shall also meet those specified in Table 1, 2 or 3, and the allowable deviation shall be ±10% of the design value. The amplitude uniformity of the vibration wheel shall be less than 10%. 5.2.3 The running speed of a self-propelled or walk-behind roller at each gear shall meet those specified in Table 1 or 3, and the allowable deviation shall be ±5% of the design value. 5.2.4 The vibration damping performance of a roller shall at least meet the requirements of permitted level given in JG/T 5076.2. 5.2.5 Each operating mechanism of a roller shall be light, flexible and reliable in positioning. Its control force shall meet the requirements of GB/T 8595. 5.2.6 The operators field of view of a self-propelled roller shall meet the requirements of GB/T 16937. 5.2.7 The temperature of hydraulic oil in the hydraulic system of a roller shall not exceed 90℃; the solid particle pollution level of the hydraulic oil shall be determined according to -/19/16 specified in GB/T 14039-2002. For the hydraulic system with piston pump, the solid particle pollution level of the hydraulic oil shall be determined according to -/18/15 specified in GB/T 14039-2002. 5.2.8 The self-propelled and walk-behind rollers shall be able to climb over the ramps specified in Tables 1 and 3 when moving at low speed. 5.2.9 When fuel and water are filled in the oil tank and water tank respectively to 2/3 of the tank volume, the force for picking up the frame at the location of traction connection device shall not exceed 250N. 5.2.10 The electrical system circuit of a roller shall be well connected, and the arrangement of all instruments, switches and buttons shall be reasonable to facilitate operation and observation. 5.2.11 The roller shall be free of oil or water seeping and leakage. 5.3 Requirements for safety, environmental protection and energy saving 5.3.1 The roller shall meet the compulsory provisions in GB 25684.1 and GB 25684.13, and implement the recommendatory provisions by reference. 5.3.2 The roller shall be affixed with a safety label which shall meet the requirements of GB 20178. 5.3.3 The braking performance of a self-propelled roller shall meet the requirements of GB/T 21152, and that of a walk-behind roller shall comply with GB/T 25609. 5.3.4 The sound power level of external emission noise of a roller and the sound pressure level of emission noise at the operator position shall meet the requirements of GB 16710. 5.3.5 The limits of exhaust pollutants from the motor of a roller shall meet the requirements of GB 20891. 5.3.6 If the driving cab of a roller is equipped with air conditioner, the air conditioner refrigerant shall meet the requirements of GB/T 18826. 5.4 Requirements for reliability 5.4.1 In the 600h reliability test, the mean time between failures of a roller shall not be less than 230h, and the operational availability shall not be less than 95%. 5.4.2 The reliability test of a roller may also be replaced by a 600h industrial test, and its index shall meet the requirements of 5.4.1.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage Annex A (Informative) Record form of roller test Annex B (Informative) Evaluation form of general item inspection and test Annex C (Informative) Record form of reliability test Annex D (Normative) Classification table of reliability test failures

振動壓路機 1范圍 本標準規(guī)定了振動壓路機(以下簡稱壓路機)的術語和定義，分類，要求.試驗方法，檢驗規(guī)則，標志、包裝、運輸和貯存。 本標準適用于自行式、拖式和手扶式振動壓路機。 2規(guī)范性引用文件 下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB/T 7920.5土方機械 壓路機和回填壓實機 術語和商業(yè)規(guī)格 GB/T 8595土方機械 司機的操縱裝置 GB/T 10913 土方機械 行駛速度測定 GB/T 14039—2002液壓傳動 油液 固體顆粒污染等級代號 GB 16710土方機械 噪聲限值 GB/T 16937土方機械 司機視野 試驗方法和性能準則 GB/T 18148土方機械 壓實機械壓實性能試驗方法 GB/T 18826工業(yè)用1，1，1，2-四氟乙烷(HFC-134a) GB/T 20082液壓傳動 液體污染 采用光學顯微鏡測定顆粒污染度的方法 GB 20178 土方機械 機器安全標簽 通則 GB 20891非道路移動機械用柴油機排氣污染物排放限值及測量方法(中國第三、四階段) GB/T 21152土方機械 輪胎式機器 制動系統(tǒng)的性能要求和試驗方法 GB/T 22358 土方機械 防護與貯存 GB/T 25602 土方機械 機器可用性 術語 GB/T 25606 土方機械 產品識別代碼系統(tǒng) GB/T 25609土方機械 步行操縱式機器的制動系統(tǒng) 性能要求和試驗方法 GB/T 25614土方機械 聲功率級的測定 動態(tài)試驗條件 GB/T 25615土方機械 司機位置發(fā)射聲壓級的測定 動態(tài)試驗條件 GB/T 25624土方機械 司機座椅 尺寸和要求 GB 25684.1土方機械 安全 第1部分：通用要求 GB 25684.13土方機械 安全 第13部分：壓路機的要求 JB/T 5945工程機械 裝配通用技術條件 JB/T 5946工程機械 涂裝通用技術條件 JB/T 5947 工程機械 包裝通用技術條件 JB/T 9725土方機械 產品型號編制方法 JG/T 5076.2振動壓 路機減振系統(tǒng)檢驗規(guī)范 ISO 11500液壓傳動 用消光原理進行自動粒子計數(shù)測定液態(tài)樣品的微粒污染程度(Hydraulic fluid power—Determination of the particulate contamination level of a liquid sample by automatic par- ticle counting using the light-extinction principle) 3術語和定義 GB/T 7920.5和GB/T 25602界定的以及下列術語和定義適用于本文件。 3.1 振幅均勻性amplitude uniformity 振動輪兩端振幅之差的絕對值與兩端振幅平均值的比。 4分類 4.1形式 壓路機形式分為自行式、拖式和手扶式。 4.2型號 壓路機的型號宜按JB/T 9725的規(guī)定編制，或由制造商自行確定。 4.3基本參數(shù) 4.3.1 自行式壓路機的基本參數(shù)應符合表1的規(guī)定。 表1 自行式壓路機基本參數(shù) 項目 輕型 中型 重型 超重型 工作質量(m) kg 1 000≤m<6 000 6 000≤m<14 000 14 000≤m<24 000 m≥24 000 直徑 mm 400～1 000 800～1 650 ≥1 500 寬度 mm 500～1 300 1100～2150 ≥2100 振動頻率 Hz 33～70 25～70 20～40 名義振幅 mm 0.3～1.5 0.3～2.5 0.5～3.5 激振力 kN ≥14 ≥30 ≥150 離地間隙 mm ≥150 ≥250 ≥355 最高行駛速度 km/h ≤15 ≤25 ≤15 最小外側轉彎半徑 mm ≤6 000 ≤7 500 ≤8 000 爬坡能力 ％ ≥20 4.3.2拖式壓路機的基本參數(shù)與尺寸應符合表2的規(guī)定。 表2拖式壓路機的基本參數(shù) 項目 基本參數(shù) 工作質量 Kg 8 000～30 000 振動頻率 Hz 20～50 名義振幅 mm 0.8～3.5 激振力 kN 60～1 000 4.3.3手扶式壓路機的基本參數(shù)應符合表3的規(guī)定。 表3手扶式壓路機的基本參數(shù) 項目 基本參數(shù) 工作質量 kg 200～1 500 振動頻率 Hz 30～70 名義振幅 mm 0.2～2.5 激振力 kN 10～60 行駛速度 km/h ≤5 爬坡能力 ％ ≥20 路緣間隙 mm ≥75 5要求 5.1 一般要求 5.1.1 壓路機的結構布置應做到使用、維護、保養(yǎng)及調整方便。 5.1.2壓路機應能在以下條件下正常運行： ——環(huán)境溫度：-10℃～+40℃； ——海拔高度：不大于2 000 m。 5.1.3所有需要潤滑的零部件均應裝有作用可靠、易于維護的潤滑裝置。 5.1.4機械驅動的壓路機應操縱舒適.如：實現(xiàn)無離合踏板便可換擋的功能等。 5.1.5 1自行式壓路機宜安裝行走速度顯示裝置。 5.1.6 配有司機室的自行式壓路機電氣系統(tǒng)應配有車用標準電源接口或可充電的USB接口。 5.1.7 壓路機的座椅應符合GB/T 25624的要求，宜配備根據(jù)體重調節(jié)高度及剛度的裝置。 5.1.8當發(fā)動機熄火后壓路機被牽引時，轉向機構宜能轉向。 5.1.9 工作質量為8 000 kg及以上的壓路機燃油箱容量應能滿足8 h以上的正常工作。 5.1.10壓路機的裝配質量應符合JB/T 5945的規(guī)定。 5.1.11 壓路機的涂裝質量應符合JB/T 5946的規(guī)定。 5.2性能要求 5.2.1壓路機的工作質量應符合表1、表2或表3的要求，允許偏差為設計值的±3％。 5.2.2振動頻率應符合表1、表2或表3的要求，允許偏差為設計值的±5％；名義振幅應符合表1、表2或表3的要求，允許偏差為設計值的±10％；振動輪的振幅均勻性應小于10％。 5.2.3 自行式和手扶式壓路機的各擋行駛速度應符合表1或表3的要求，允許偏差為設計值的±5％。 5.2.4壓路機的減振性能不應低于JG/T 5076.2中許可級的規(guī)定。 5.2.5壓路機的各操縱機構應輕便、靈活、定位可靠.其操縱力應符合GB/T 8595的規(guī)定。 5.2.6 自行式壓路機的司機視野應符合GB/T 16937的規(guī)定。 5.2.7 壓路機液壓系統(tǒng)中的液壓油油溫不應超過90℃；其液壓油的固體顆粒污染等級應按GB/T 14039—2002中規(guī)定的-/19/16確定；有柱塞泵的液壓系統(tǒng)其液壓油的固體顆粒污染等級應按GB/T 14039—2002中規(guī)定的-/18/15確定。 5.2.8 自行式、手扶式壓路機在低速前進時應能爬越表1、表3規(guī)定的坡道。 5.2.9拖式壓路機當油箱和水箱分別注2/3的燃油和水時，在牽引連接裝置處拾起車架的力不應超過250 N。 5.2.10壓路機電氣系統(tǒng)線路應連接良好，各儀表、開關、按鈕布置應合理，便于操作、觀察。 5.2.11壓路機不應有油和水的滲漏現(xiàn)象。 5.3安全、環(huán)境保護和節(jié)能要求 5.3.1壓路機應符合GB 25684.1和GB 25684.13中適用的強制性條款的要求、推薦性條款宜參照執(zhí)行。 5.3.2壓路機應粘貼安全標簽，安全標簽應符合GB 20178的規(guī)定。 5.3.3 自行式壓路機的制動性能應符合GB/T 21152的規(guī)定；手扶式振動壓路機的制動性能應符合GB/T 25609的規(guī)定。 5.3.4壓路機的機外發(fā)射噪聲聲功率級和司機位置發(fā)射噪聲聲壓級應符合GB 16710的規(guī)定。 5.3.5壓路機用發(fā)動機的排氣污染物排放限值應符合GB 20891的規(guī)定。 5.3.6壓路機的駕駛室配備空調時，空調的制冷劑應符合GB/T 18826的規(guī)定。 5.4可靠性要求 5.4.1 壓路機在600 h可靠性試驗中，平均失效間隔時間不應小于230 h；工作可用度不應小于95％。 5.4.2壓路機的可靠性試驗，亦可用600 h工業(yè)性試驗代替，其指標應符合5.4.1的規(guī)定。 6試驗方法 6.1試驗準備 6.1.1技術資料的準備 6.1.1.1試驗中應執(zhí)行的標準、壓路機使用說明書、記錄表格及必要的圖紙資料等，各測試記錄表參見附錄A。 6.1.1.2試驗前參見表A.1填寫試驗樣機的主要技術性能參數(shù)。 6.1.2試驗樣機的準備 6.1.2.1清洗試驗樣機，去除油污、泥土及其他污物。 6.1.2.2樣機應調試合格。 6.1.3試驗場地的準備 6.1.3.1靜態(tài)參數(shù)測定場地為清潔、干燥、密實的水平地面。 6.1.3.2平地制動距離試驗場為清潔、干燥、平坦的瀝青混凝土或水泥混凝土路面，該路面的縱向坡度不應大于0.5％，橫向坡度應不大于1％。 6.1.3.3最小外側轉彎半徑試驗場地為經過壓實的平坦地面。 6.1.3.4爬坡試驗場地為經充分壓實的清潔、干燥坡道，坡度為20％，坡道的測試距離應大于10 m，其前、后還應留有大于試驗樣機軸距1.5倍的輔助距離。 6.1.3.5可靠性試驗場地為： ——場地形狀為環(huán)形或直線形； ——場地平整，坡度不大于2％； ——場地的四周或兩側應有排水措施，場地地面不應有積水或漫水。 6.1.3.6施工現(xiàn)場為可靠性試驗場時，場地情況視施工現(xiàn)場而定。 6.2靜態(tài)參數(shù)測定和基本配置檢查 6.2.1 主要尺寸 將試驗樣機靜止停放在測量場地上并處于工作質量狀態(tài)，轉向輪的轉角為零。主要尺寸按圖1所規(guī)定的內容進行測量，測量結果記入表A.2。 圖1壓路機主要尺寸 6.2.2基本配置檢查 在主要尺寸測定的同時，檢查核對樣機的基本配置，并將核對結果記入表A.3。 6.2.3工作質量 發(fā)動機熄火，制動器松開。測出壓路機的總質量以及前、后輪的分配質量，測量結果記入表A.4。 6.2.4靜線載荷 根據(jù)6.2.1和6.2.3的測量結果，按式(1)、式(2)計算前、后輪的靜線載荷。結果記入表A.5。 (1) (2) 式中： P1——前輪靜線載荷的數(shù)值，單位為牛每厘米(N/cm)； P2——后輪靜線載荷的數(shù)值，單位為牛每厘米(N/cm)； m1——前輪的分配質量的數(shù)值，單位為千克(kg)； m2——后輪的分配質量的數(shù)值，單位為千克(kg)； g——重力加速度，單位為米每二次方秒(m/s2)，取g=9.8 m/s2； W91——前輪寬度的數(shù)值.單位為厘米(cm)； W92——后輪寬度的數(shù)值，單位為厘米(cm)。 6.3性能試驗 6.3.1 振動參數(shù) 6.3.1.1試驗工況如下： 樣機處于工作質量狀態(tài)，發(fā)動機處于額定轉速。 6.3.1.2試驗方法如下： 測定名義振動參數(shù)時，用支架和墊木將振動輪框架頂起，使振動輪懸空，使其處于無外載狀態(tài)。 將加速度傳感器安放在振動輪左、右輪緣的內側(左、右測點位置與相應輪緣的距離應相等)，并使其與地面垂直。 起動發(fā)動機，油門置于最大供油位置，使振動輪起振，待振動狀態(tài)穩(wěn)定后，調整發(fā)動機至額定轉速，測定出振動頻率、加速度、振幅等參數(shù)。測定結果記入表A.6。 按式(3)計算振幅均勻性ξ，并記入表A.6。 (3) 式中： ξ——振幅均勻性； A左——振動輪左端振幅，單位為毫米(mm)； A右——振動輪右端振幅，單位為毫米(mm)。 按式(4)計算激振力F0，并記入表A.6。 F0=mda0 (4) 式中： F0——激振力，單位為千牛(kN)； md——參振質量，單位為千克(kg)； a0——振動輪最大加速度，單位為米每二次方秒(m/s2)。 6.3.2行駛速度 按GB/T 10913的規(guī)定進行測定。 6.3.3減振性能 試驗樣機減振性能的測定按JG/T 5076.2的規(guī)定進行，測試數(shù)據(jù)和計算結果記入表A.7。 6.3.4操縱力 6.3.4.1操縱力測定條件：整機置于平整路面。 6.3.4.2操縱力測定內容： ——測定主離合器、制動器、變速桿等操縱機構所需要的力； ——測定低速擋行駛時轉動方向盤所需要的力。 6.3.4.3操縱力測定方法如下； ——用拉力計鉤住被測手柄握手處并保持垂直.把手柄從起始位置均勻地拉到終點，測取讀數(shù)。測量3次，取平均隨.測定結果記入表A.8； ——方向盤操縱力測定時，發(fā)動機油門置于額定供油位置，試驗樣機用最低擋速度行駛；用拉力計鉤住方向盤的幅條(距方向盤中心最大半徑處)，沿切線方向拉動方向盤測取讀數(shù)，或用扭力計測定。測量3次，取平均值.測定結果記入表A.8； ——將踏板測力計固定在腳踏板上，測定試驗樣機的踏板力。測量3次，取平均值，測定結果記入表A.8。 6.3.5司機視野 按GB/T 16937的規(guī)定進行視野測定。 6.3.6液壓油固體污染清潔度試驗和油溫測定 試驗樣機連續(xù)工作1.5 h(運行1 h，再連續(xù)振動0.5 h)后立即進行，在液壓油箱內油液1/2的深處，盡量靠近油箱中心位置取油樣。采用光學顯微鏡測試時按GB/T 20082的方法進行，采用自動顆粒計數(shù)法測試時按ISO 11500的方法進行；油溫測定采用經校正的溫度測量器具進行測量。測試結果記入表A.9。 6.3.7爬坡性能 試驗樣機掛最低擋，以最低速度接近爬坡起點，然后迅速將發(fā)動機調到最大供油位置進行連續(xù)爬坡。改變坡道角度，直到試驗樣機爬坡能力極限，該坡度即為最大爬坡能力。試驗結果記入表A.10。 6.3.8最小外側轉彎半徑 試驗樣機不起振，將轉向輪轉至極限位置保持不動.以最低速度穩(wěn)定行駛，待試驗樣機的輪子在地而上形成一封閉的圓形軌跡后，即可停車。在圓軌跡均布的3個位置測量圓軌跡的最大半徑，其平均值，即為樣機的最小外側轉彎半徑R(見圖2)。測試結果記入表A.11。