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The Bearing of Back Roll for Belt Conveyor Idlers — Basic Parameters and Dimensions
1 Scope
This standard specifies the term and definition, representation methods of type, structure type, basic parameters and dimensions, and technical requirements of the bearing of back roll for belt conveyor idlers (hereinafter referred to as bearing housing).
This standard is applicable to the parameters and dimensions of idler specified in GB/T 990-1991.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 708-1988 Dimension, Shape, Weight and Tolerance for Cold-rolled Steel Plates and Sheets
GB/T 709-1988 Dimension, Shape, Weight and Tolerance for Hot-rolled Steel Plates and Sheets
GB/T 990-1991 Belt Conveyor Idlers — Basic Parameters and Dimensions
GB/T 13237-1991 Cold-rolled Quality Carbon Structural Steel Sheets and Strips
GB/T 15055-1994 Permissible Stamping Variations in Dimensions without Tolerance Indication
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
idler
a device for supporting the conveyor belt and the materials on the conveyor belt to ensure the stable operation of the conveyor belt
3.2
bearing housing
parts for supporting bearings and the like are formed by cold stamping. Types are TD75, DTII, TK, TKII and SP
4 Representation Methods of Type
4.1 Representation methods of type for bearing housing are as follows:
Idler diameter
Bearing model
Idler model
4.2 Designation example
Bearing housing of the idler type is DTII, the bearing type is 4G204, and the idler diameter is φ89, designated as DTII204-89.
5 Structure Type, Basic Parameters and Dimensions
5.1 Structure type
a. Type TD75 bearing housing as shown in Figure 1;
b. Type DTII bearing housing as shown in Figures 2 and 3;
c. Type TK bearing housing as shown in Figure 4;
d. Type TKII bearing housing as shown in Figure 5;
e. Type SP bearing housing as shown in Figure 6.
5.2 Basic parameters and dimensions
The basic parameters and dimensions shall comply with the requirements specified in Tables 1 to 5.
6 Technical Requirements
6.1 The chemical composition of materials selected for the product shall comply with the requirements of GB/T 699-1999. The recommended materials are: 08Al, 08F, SPHE, etc.
6.2 The physical and mechanical properties of the materials shall comply with the requirements of GB/T 13237-1991.
6.3 The dimension, shape, weight and tolerance of materials selected for the product shall comply with the requirements of GB/T 708-1988 and GB/T 709-1988.
6.4 According to the requirements of GB/T 15055-1994, the dimensions in the drawing without tolerance indication shall be manufactured according to the accuracy of Class f.
6.5 There shall be no defects, such as burrs, cracks, dents and wrinkles on the product surface.
6.6 D1 and bearing contact surface, the radial contact surface and the axial contact surface shall not less than 80%.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Representation Methods of Type
5 Structure Type, Basic Parameters and Dimensions
6 Technical Requirements
中国重型机械联合企业标准
JB/ZQ 6201-2003
带式输送机托辊冲压轴承座
基本参数与尺寸
The Bearing of Back Roll for Belt conveyor idlers—
Basic parameters and dimensions
2003-12-01 发布 2004-01-01 实施
中国重型机械工业协会 发 布
前 言
本标准由中国重型机械工业协会归口管理。
带式输送机托辊冲压轴承座
基本参数与尺寸
1 范围
本标准规定了带式输送机托辊冲压轴承座（以下简称轴承座）产品的术语和定义、型号表示方法、结构型式、基本参数与尺寸、技术要求。
本标准适用于GB/T 990－1991所列的托辊参数与尺寸。
2 规范性引用文件
下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单（不包括勘误的内容）或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。
GB/T 699－1999 优质碳素钢的化学成分和力学性能
GB/T 708－1988 冷轧钢板和钢带的尺寸、外形、重量及允许偏差
GB/T 709－1988 热轧钢板和钢带的尺寸、外形、重量及允许偏差
GB/T 990－1991 带式输送机 托辊 基本参数与尺寸
GB/T 13237－1991 优质碳素结构钢冷轧薄钢板和钢带
GB/T 15055－1994 冲压件未注公差尺寸极限偏差
3 术语和定义
下列术语和定义适用于本标准。
3.1
托辊
用于支承输送带及输送带上的物料，保证输送带稳定运行的装置。
3.2
冲压轴承座
采用冷冲压成型的用于支承轴承等的零件。型式有TD75型、DTⅡ型、TK型、TKⅡ型和SP型。
4 型号表示方法
4.1 轴承座型号表示方式如下
托辊直径
轴承型号
托辊型号
4.2 标记示例
托辊型号为DTⅡ型，所装轴承型号为4G204，所装托辊直径为φ89的轴承座，型号表示为DTⅡ204-89。
5 结构型式、基本参数与尺寸
5.1 结构型式
a. TD75型轴承座见图1；
b. DTⅡ轴承座见图2～图3；
c. TK型轴承座见图4；
d. TKⅡ型轴承座见图5；
e. SP型轴承座见图6。
5.2 基本参数与尺寸
基本参数与尺寸符合表1～表5 。
6 技术要求
6.1 产品所选材料的化学成分应符合GB/T 699-1999要求，建议采用材料为：08Al、08F、SPHE等。
6.2 材料的物理机械性能应符合GB/T 13237-1991要求。
6.3 产品所选材料的尺寸、外形、重量及允许偏差应符合GB/T 708-1988、GB/T 709-1988要求。
6.4 图样中未注公差的尺寸，按GB/T 15055－1994的规定，其公差等级按f级精度制造。
6.5 产品表面不允许有毛刺、裂纹、凹痕、皱纹等缺陷。
6.6 D1与轴承接触面，径向接触面和轴向接触面均不小于80%。
图1 TD75型轴承座
注：注： 为基准符号，以下同。
表1 TD75型轴承座基本参数与尺寸
单位为mm
型号 规格 D D1 D2 d H H1 H2 H3 C t
图2 D≤φ108以下DTⅡ型轴承座
图3 D≥φ133以上DTⅡ型轴承座
表2 DTⅡ型轴承座基本参数与尺寸
单位为mm
型号 规格 D D1 D2 D3 d H H1 H2 R r C t
图4 TK型轴承座
表3 TK型轴承座基本参数与尺寸
单位为mm
型号 规格 D D1 D2 d H H1 H2 R r C t
图5 TKⅡ型轴承座
表4 TKⅡ型轴承座基本参数与尺寸
单位为mm
型号 规格 D D1 D2 d H H2 R r C t
图6 SP型轴承座
表5 SP型轴承座基本参数与尺寸
单位为mm
型号 规格 D D1 D2 D3 d H H1 H2 H3 r R C T1 T2
