JB/T 8905.3-1999 起重机用立式减速器

ICS21.120.20

J19

JB/T8905.3999－－－1

起重机用立式减速器

Verticalgearboxesforcranes

1999-06-28发布2000-01-01实施

国家机械工业局发布

JB/T8905.3－－－－1999

目次

前言

1范围··························································································································································1

2引用标准··················································································································································1

3型式··························································································································································2

4基本参数与尺寸······································································································································2

5技术要求················································································································································10

6试验方法················································································································································14

7检验规则················································································································································14

8标志、包装、运输和贮存·····················································································································15

附录A（标准的附录）起重机用立式减速器的选用方法··········································································16

I

JB/T8905.3－－－－1999

前言

本标准是起重机用减速器系列标准的一部分，该系列标准包括：

JB/T8905.1—1999起重机用三支点减速器

JB/T8905.2—1999起重机用底座式减速器

JB/T8905.3—1999起重机用立式减速器

JB/T8905.4—1999起重机用套装式减速器

本标准的附录A是标准的附录。

本标准由全国起重机械标准化技术委员会提出并归口。

本标准起草单位：机械工业部北京起重运输机械研究所。

本标准主要起草人：李鹏、赵光德。

II

中华人民共和国机械行业标准

JB/T8905.3－－－－1999

起重机用立式减速器

Verticalgearboxesforcranes

1范围

本标准规定了起重机立式斜齿圆柱齿轮减速器（QJ–L型）（以下简称减速器）的型式、基本参数、

尺寸和技术要求。

本标准规定的减速器主要适用于起重机的运行机构，也可用于运输、冶金、矿山、化工及轻工等机

械设备的传动机构。其工作条件应符合下列要求：

a)齿轮圆周速度不大于16m/s；

b)高速轴转速不大于1500r/min；

c)工作环境温度为–40℃~＋45℃;

d)可正反两向运转。

2引用标准

下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，所示版本均

为有效。所有标准都会被修订，使用本标准的各方应探讨使用下列标准最新版本的可能性。

GB191—1990包装储运图示标志

GB/T1031—1995表面粗糙度参数及其数值

GB/T1095—1979平键键和键槽的剖面尺寸

GB/T1184—1996形状和位置公差未注公差值

GB/T1356—1988渐开线圆柱齿轮基本齿廓

GB/T1357—1987渐开线圆柱齿轮模数

GB/T1801—1979公差与配合尺寸至500mm孔、轴公差带与配合

GB/T3811—1983起重机设计规范

GB/T5903—1995工业闭式齿轮油

GB/T6404—1986齿轮装置噪声声功率级测定方法

GB/T9439—1988灰铸铁件

GB/T10095—1988渐开线圆柱齿轮精度

GB/T13306—1991标牌

GB/T13384—1992机电产品包装通用技术条件

JB/T7929—1995齿轮传动装置清洁度

JB/T9050.3—1999圆柱齿轮减速器加载试验方法

国家机械工业局1999-06-28批准2000-01-01实施

1

JB/T8905.3－－－－1999

3型式

3.1结构型式：QJ–L型减速器为三级传动的立式底座式减速器。

3.2装配型式共有六种，见图1。

ⅠⅡⅢⅣⅤⅥ

图1减速器装配型式

3.3轴端型式：高速轴和低速轴均采用圆柱形轴伸，平键联接。

3.4型号和标记

型号表示方法：

QJL

装配型式

公称传动比

名义中心距

立式

起重机减速器

标记示例：

名义中心距a1=200，公称传动比i=40，装配型式第Ⅲ种的起重机立式减速器，标记为：

减速器QJ–L200–40ⅢJB/T8905.3—1999

4基本参数与尺寸

4.1中心距

减速器以输出级中心距为名义中心距，其数值应符合表1的规定。

表1mm

a1(名义中心距)140170200236280335400

a2100118140170200236280

a37185100118140170200

a03（总中心距）311373440524620741880

2

JB/T8905.3－－－－1999

4.2传动比

减速器的公称传动比与实际传动比应符合表2的规定，其极限偏差不大于±5%。

表2

传动比公称传动比

a116182022.4252831.535.5

mm实际传动比

14015.5717.9219.9623.1324.4628.5932.1535.83

17015.8217.8619.9522.6425.4427.7831.4535.22

20015.7818.1020.2222.2324.9827.5731.2135.99

23615.6818.0720.2122.2825.0927.7731.5334.37

28016.5118.1920.2622.3923.6927.7231.1834.83

33515.7017.9820.2022.1825.1127.6431.5835.76

40015.7818.1020.2222.2324.9827.5731.2136.00

传动比公称传动比

a14045505663718090100

mm实际传动比

14040.3045.7249.2655.2063.0968.2578.0090.88103.87

17039.8743.3449.2156.3964.0472.0681.8289.29101.39

20040.7544.0349.9555.7363.2268.1277.2886.1097.67

23641.1343.9550.2153.3664.9271.0081.1185.8398.05

28039.1544.4150.7653.6961.3671.8482.1190.04102.91

33540.0045.7048.7658.4362.3572.8283.1993.75100.04

40040.7544.0349.9555.7363.2268.1277.2886.1097.67

4.3齿轮基本齿廓

减速器齿轮的基本齿廓应符合GB/T1356的规定。

4.4齿轮模数和螺旋角

减速器齿轮的法向模数mn应符合GB/T1357的规定，其数值见表3。齿轮的螺旋角β=12°。

表3

mn1.522.533.545678

4.5外形尺寸和安装尺寸

QJ–L型减速器的外形尺寸和安装尺寸见图2和表4。

4.6承载能力

4.6.1机构工作级别为M5的减速器承载能力应符合表5的规定。

4.6.2连续工作类型减速器的承载能力应符合表6的规定。这种工作类型的减速器推荐用于除起重机

3

JB/T8905.3－－－－1999

以外的其他各种机械设备传动中。

4.6.3减速器输出轴端的瞬时允许转矩为额定转矩的2.7倍。

4.6.4起重机用立式减速器的选用方法见附录A（标准的附录）。

图2QJ–L型减速器

4

JB/T8905.3－－－－1999

表4mm

尺寸中心距主动轴被动轴外形尺寸

型号

a1a2a3a03dl1Nb1t1Dl2Kb2t2HBLL0N0N2

QJ–L140140100713112050120622.548821301451.5300190558167103107

QJ–L17017011885375255013582855821501659355215650192115120

QJ–L2002001401004402860180831651051751869405250747217133137

QJ–L23623617011852435802101038801302002285475300894260158164

QJ–L2802802001406204011023512439013022025955573401035295277211

QJ–L335335236170741451102551448.5110165260281166544001243357307241

QJ–L400400280200880551102851659130200310321377784901443412352286

尺寸安装尺寸重量

型号孔数

H0ASS1S2S3B1B2B3L1L2L3Cd1nkg

QJ–L14013826018530017024560303080802021477

QJ–L17016829020535020526560302511011025214112

QJ–L20019334023540024029560303012012025214165

QJ–L236230405270555529033060303018012030216249

QJ–L280265480320606034040080404019512030256364

QJ–L335315550365606041044580404020012035256647

QJ–L4003806804307070510520904550240140403161048

5

6

表5

名

输输