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.
TB/T 1718 consists of the following three parts under the general title Wheelsets assembly for locomotive and rolling stock:
——Part 1: locomotive;
——Part 2: Railway rolling stock;
——Part 3: EMU/DMU
This part is Part 2 of TB/T 1718.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces TB/T 1718-2003 Technical requirements of railway vehicles wheelset installation and partially replaces TB/T 2562-1995 Test method for static balance of wheel and dynamic balance of wheelset of railway passenger car. This part is mainly based on TB/T 1718-2003, and incorporates the dynamic unbalance of wheelset with maximum operating speed less than or equal to 200km/h specified in TB/T 2562-1995. The following main technical changes have been made with respect to TB/T 1718-2003:
——The width difference of cast steel wheel rim assembled on the same axle is modified (see Table 1; Table 1 of Edition 2003);
——The requirements of roundness, cylindricity and surface roughness of the disc hub hole after processing are deleted (see 4.3.6 of Edition 2003);
——The requirements of the transition arc radius of the wheel hub hole and the outer end surface of the wheel hub are deleted (see 4.3.7 of Edition 2003);
——The requirements of static unbalanced position of wheel and brake disc are modified (see 4.1.3; Table 3 of Edition 2003)
——The requirements that mineral oil may be coated on the surface of the wheel seat (disc seat) and the inner diameter surface of the wheel hub hole (disc hub hole) are added (see 4.2.1);
——The requirements of effective overhanging of the wheel shaft after wheelset assembly are added (see 4.2.5);
——The requirements of press assembling force of LZ45CrV steel axle are added (see Table2);
——The requirements of the second assembly in case of rejected press assembling force curve after wheelset press assembly are modified (see 4.2.8 and A.2.6; 4.4.7 and A.2.6 of Edition 2003);
——The requirements for oil-filled press disassembling are modified (see 4.2.10, 4.6 of Edition 2003);
——The requirements for hot charging of wheel and axle are added (see 4.3);
——The requirements of wheelset after assembling are modified (see Table 3, Table 3 of Edition 2003);
——The requirements of dynamic unbalance after assembling of wheelset are added (see 4.4.3);
——The management contents of the press assembling curve in retention period are deleted (see 4.4.4 and A.2.7 of Edition 2003).
This part is under the jurisdiction of CRRC Qishuyan Locomotive & Rolling Stock Technology Research Institute Co., Ltd.
The previous editions of this part are as follows: TB/T 1718-1987, TB/T 1718-1991 and TB/T 1718-2003.
Wheelsets assembly for locomotive and rolling stock - Part 2: Railway rolling stock
1 Scope
This part of TB/T 1718 specifies the technical requirements of parts and components and wheelset assembly as well as the inspection, marking, painting and protection of railway rolling stock wheelsets.
It is applicable to the assembly of new wheels, new axles and new brake discs of railway rolling stocks with a maximum operating speed of less than or equal to 200km/h.
It is not applicable to the assembly of power rolling stock wheelsets and the oil-filled press assembling wheelsets.
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.
TB/T 1010 Wheelset and bearing of railway vehicles - types and basic dimensions
TB/T 1013 Carbon cast steel wheel
TB/T 2708 Technical specifications for rolled solid wheels of railway rapid passenger car
TB/T 2817 Technical specifications of rolled solid wheels of railway vehicles
TB/T 2945 Technical specifications of LZ50 steel axle and steel billet for railway vehicles
TB/T 2980 Brake disc of rolling stock
3 Technical requirements of parts and components
3.1 General provisions
The axles, wheels and brake discs shall be in accordance with the product drawings and technical documents approved according to the established procedures.
3.2 Axle
3.2.1 Axle shall comply with the requirements of TB/T 1010 and TB/T 2945 or the corresponding technical documents.
3.2.2 Grinding or rolling process may be adopted for the final processing of wheel seat (disc seat). Rolling process, where used as the final processing, may be carried out only after the upper limit of the final turning processed surface roughness Ra of the wheel seat (disc seat) reaches 3.2μm. After the grinding or rolling of wheel seat (disc seat), the upper limit of surface roughness Ra shall be1.6μm and the roundness tolerance shall be 0.02mm; the cylindricity tolerance of truck wheel seat (disc seat) shall be 0.05mm while that of passenger car wheel seat (disc seat) shall be 0.015mm; the run-out of passenger car wheel seat (disc seat) shall be 0.03mm. The large end shall be on the inner side.
3.3 Wheel
3.3.1 Wheels shall comply with the requirements of TB/T 1010, TB/T 1013, TB/T 2817, TB/T 2708 or the corresponding technical documents.
3.3.2 For the processed wheel hub hole, the roundness tolerance is 0.02mm, the cylindricity tolerance is 0.05mm, and the large end shall be on the inner side; the upper limit of inner diameter surface roughness Ra of the wheel hub hole is 6.3μm.
3.3.3 Unless otherwise specified in the drawing, for the processed wheel hub hole, the radius of the transition arc of the wheel hub hole and the inner end surface of the wheel hub is 3mm.
3.4 Brake disc
Brake disc shall comply with the requirements of TB/T 2980 or the corresponding technical documents.
4 Technical requirements for wheelset assembly
4.1 Basic requirements
4.1.1 Wheels and brake discs of the same type, material and manufacturer shall be assembled on the same axle.
4.1.2 The width difference of two wheel rims assembled on the same axle shall comply with the requirements of Table 1.
Table 1
Maximum operating speed v
km/h v≤120 120
Contents
Foreword i
1 Scope
2 Normative references
3 Technical requirements of parts and components
4 Technical requirements for wheelset assembly
4.1 Basic requirements
4.2 Press assembly of wheel (brake disc) and axle
4.3 Hot charging of wheel and axle
4.4 Finished wheelsets
5 Inspection
6 Marking, painting and protection
Annex A (Normative) Press assembling force curve and description of wheelset assembly
ICS 45.060.20
S 33
中華人民共和國鐵道行業標準
TB/T 1718.2—2017
代替TB/T 1718—2003和部分代替TB/T 2562—1995
機車車輛輪對組裝
第2部分：車輛
Wheelsets assembly for locomotive and rolling stock—
Part 2：Railway rolling stock
2017—05—06發布 2017—12—01實施
國家鐵路局 發布
前言
TB/T 1718《機車車輛輪對組裝》分為三個部分：
——第1部分：機車；
——第2部分：車輛；
——第3部分：動車組。
本部分為TB/T 1718的第2部分。
本部分按照GB/T 1.1—2009給出的規則起草。
本部分代替TB/T 1718—2003《鐵道車輛輪對組裝技術條件》和部分代替TB/T 2562—1995《鐵道客車用車輪靜平衡、輪對動平衡試驗方法》。本部分以TB/T 1718—2003為主，納入了TB/T 2562—1995中的最高運行速度小于或等于200 km/h輪對動不平衡的內容。與TB/T 1718—2003相比，本部分主要技術變化如下：
——修改了同一車軸組裝的鑄鋼車輪輪輞寬度差(見表1，2003年版的表1)；
——刪除了盤轂孔加工后的圓度、圓柱度和表面粗糙度的要求(見2003年版的4.3.6)；
——刪除了輪轂孔與輪轂外側端面的過渡圓弧半徑的要求(見2003年版的4.3.7)；
——修改了車輪、制動盤靜不平衡位置的要求(見4.1.3，2003年版的表3)；
——增加了輪座(盤座)表面及輪轂孔(盤轂孔)內徑面可涂抹礦物油的要求(見4.2.1)；
——增加了輪對組裝后輪軸有效突懸量的要求(見4.2.5)；
——增加了LZ45CrV鋼車軸的壓裝力的要求(見表2)；
——修改了輪對壓裝后，如壓裝壓力曲線不合格，第二次組裝的要求(見4.2.8、A.2.6，2003年版的4.4.7、A.2.6)；
——修改了注油壓退的要求(見4.2.10，2003年版的4.6)；
——增加了車輪和車軸熱裝的要求(見4.3)；
——修改了輪對組裝后要求(見表3，2003年版的表3)；
——增加了輪對組裝后的動不平衡規定(見4.4.3)；
——刪除了壓裝曲線保存期管理性內容(見2003年版的4.4.4，A.2.7)。
本部分由中車戚墅堰機車車輛工藝研究所有限公司歸口。
本部分代替標準的歷次版本發布情況：TB/T 1718—1987、TB/T 1718—1991、TB/T 1718—2003。
機車車輛輪對組裝
第2部分：車輛
1 范圍
TB/T 1718本部分規定了車輛輪對零部件技術要求、輪對組裝技術要求、檢驗、標記、涂裝與防護。
本部分適用于鐵道車輛最高運行速度小于或等于200 km/h的新制車輪、新制車軸和新制制動盤的組裝。
本部分不適用于動力軌道車輛輪對組裝和注油壓裝輪對組裝。
2規范性引用文件
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。
TB/T 1010鐵道車輛輪對及軸承型式與基本尺寸
TB/T 1013碳索鋼鑄鋼車輪
TB/T 2708鐵路快速客車輾鋼整體車輪技術條件
TB/T 2817鐵道車輛用輾鋼整體車輪技術條件
TB/T 2945鐵道車輛用LZ50鋼車軸及鋼坯技術條件
TB/T 2980機車車輛用制動盤
3零部件技術要求
3.1 總則
車軸、車輪、制動盤應符合按規定程序審批的產品圖樣及技術文件的要求。
3.2車軸
3.2.1 車軸應符合TB/T 1010、TB/T 2945或相應的技術文件的要求。
3.2.2輪座(盤座)的終加工可以采用磨削或滾壓工藝。采用滾壓工藝作為終加工時，輪座(盤座)終車削加工表面粗糙度Ra上限值為3.2 μm后方可進行滾壓加工。輪座(盤座)經磨削或滾壓加工后表面粗糙度Ra上限值為1.6 μm，圓度公差為0.02 mm，貨車輪座(盤座)的圓柱度公差為0.05 mm，客車輪座(盤座)的圓柱度公差為0.015 mm，客車輪座(盤座)的跳動為0.03 mm。其大端應在內側。
3.3車輪
3.3.1 車輪應符合TB/T 1010，TB/T 1013、TB/T 2817、TB/T 2708或相應的技術文件的要求。
3.3.2輪轂孔加工后的圓度公差為0.02 mm，圓柱度公差為0.05 mm，且大端應在內側；輪轂孔內徑表面粗糙度Ra上限值為6.3 μm。
3.3.3當圖紙未規定時，輪轂孔加工后，輪轂孔與輪轂內側端面的過渡圓弧半徑為3 mm。
3.4制動盤
制動盤應符合TB/T 2980或相應的技術文件的要求。
4輪對組裝技術要求
4.1 基本要求
4.1.1 同一車軸上應組裝同型號、同材質、同廠家生產的車輪及同型號、同材質、同廠家生產的制動盤。
4.1.2 同一車軸上組裝的兩個車輪輪輞寬度差應符合表1的規定。
表1
最高運行速度v v≤120 12020％)
圖A.11不合格曲線(曲線短L0/L<80％)
圖A.12不合格曲線(陡升超過T1>98 kN)
圖A.13不合格曲線(末段平直線長l3/L0>15％)
圖A.14不合格曲線(末段下降線長l3/L0>10％)
圖A.15不合格曲線[末段平直線和下降線長超過(l2+l3)/L0>15％]
圖A.16不合格曲線(中間凹下)
圖A.17不合格曲線(中間平直線長l2/L0>10％)
圖A.18不合格曲線(中間下降、跳動)
圖A.19 不合格曲線(壓裝力小，T3Tmax)
