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液压胶管接头


接头工作压力表 Working Pressure

接头联接型式 Connection
1 国标接头联接型式 GB Connection 1.1 74° 锥面密封型式 74° Cone Seal(GB/T 9065.1)

2 德国 DIN 标准联接型式 DIN Connection 2.1 用卡套进行卡压密封型式 Comp

ression Fitting(DIN 2353)

2.2 用 24°锥面加 O 形圈密封型式 24° Cone O-Ring Seal(DIN 3865)

2.3 用球面与 24°锥面密封型式 Multiseal To 24°Cone

3 美国接头联接型式 American Thread Type 3.1 用 60°锥管螺纹密封型式 60° Tapered Thread Seal(SAE J514)

3.4 90°锥面密封型式 90° Cone Seal(SAE J513)

3.7 用 O 形圈密封的法兰接头 Flange Coupling(SAE J518)

油口型式及尺寸 Port

2 ISO 6149-1 公制螺纹油口及相配柱端 ISO 6149-1 metric thread port and mating stud end.

接头概述及装配说明 FITTINGS AND FITTINGS ASSEMBLY INSTRUCTIONS
O 形圈平面密封接头 O-RING FACE SEAL FITTINGS

O 形圈平面密封接头概述 O-RING FACE SEAL FITTINGS INSTRUCTIONS ● O 形圈平面密封的基本结构可以有两种,第一种为:由接头体、O 形圈、螺母、接管组成,接管与系统管路中的钢管焊接连接,如图 1 所示。第二种为:由接头体、O 形圈、螺母、衬套组成,管子被翻边成 90°,如图 2 所示。使用图 1 所示的基本结构时,须保证焊接的 质量。 The fitting has two types.The first type consists of a body,an O-ring,a nut and the tube.The tube is brazed with the system steel tube,see Fig. 1.The second type consists of a body,an O-ring, a nut and a sleeve.As shown in Fig. 2,the tube is flanged to 90°.

● O 形圈平面密封能很好的适用于高压系统,如使用硬度为 N90 的 O 形圈,能有更好的密封作用,更有效的防止泄漏。由于使用 O 形 圈密封,因此使用的温度范围受 O 形圈材质的影响。 ● O-ring face seal fittings are suit for high pressure system.If O-rings are of 90° durometer hardness,the sealing will better. ● O 形圈平面密封接头的连接螺纹有两种:公制螺纹(见 A1-A) ,美制 ORFS 螺纹(见 J1-J) 。 ● The O-ring face seal fitting has two connected thread:metric thread (see A1-A) and ORFS thread (see J1-J). ● O 形圈密封槽的结构有三种,见图 3、4、5。其中 3 结构能保持 O 形圈在安装时或垂直倒置时不掉下,方便安装;负压时 O 形圈不会 被吸入油路。4 结构则不具备 3 结构的前一优点。5 结构既不具备 3 结构的前一优点,而且负压时会被吸入油路。 ● As shown in Fig. 3,Fig. 4 and Fig. 5,the O-ring seal groove has three types. The advantage of type Fig. 3 : It is very convenience for installation, when put the groove adown O-ring could be held in the groove and not drop; The O-ring could not enter the hydraulic system when the pressure is negative. The type Fig. 4 has only the later advantage of the type Fig. 3. The type Fig. 5 has no above advantage.

● 对公制螺纹的 O 形圈槽如需按 JB 标准生产时,为图 5 的结构。本公司建议选用图 3 结构,用户可在订货时用文字说明。 如未说明,一般按图 5 所示的 JB 标准生产。对美制 ORFS 螺纹的 O 形圈槽,本公司全部采用图 3 结构生产,不生产图 4 或图 5 结构. For metric thread O-ring groove JB standard is type Fig. 5, but we suggest that the type Fig. 3 should be chosen and make a annotation when order. If no annotation we produce as type Fig. 5 general. For ORFS O-ring groove ,we produce as type Fig. 3 only. O 形圈平面密封接头安装 O-RING FACE SEAL FITTINGS ASSEMBLY INSTRUCTIONS ● 安装 Assembly ● 重复安装 Reassembly ● 泄漏原因 Leakage reason 1 对图 1 的基本结构,在安装前应先垂直锯下钢管(± 1°以内) ,去掉内外径毛刺,并去油及氧化物,套上螺母后再焊 接。对图 2 的基本结构,在垂直锯下后用专用设备将管端翻边成 90°,且尺寸 D 应在 D1 和 D2 之间,见图 6。 As shown in Fig. 1,the tube end is cut squarely(within +/- 1degree) before assembled.Deburr the O.D. and I.D. of the tube. Remove all oil and oxide.As shown in Fig. 2,the tube is flanged to 90° after cut.Diamter D should fall between diameter

D1 and D2, see Fig. 6

1 如果接头体未放置 O 形圈,则应先放好 O 形圈。 The fitting body should be installed O-ring firstly. 2 按图 1 或图 2,将接管或钢管翻边压住接头体 O 形圈,用手拧紧螺母,再用扭矩扳手按 P 的扭矩建议表扳紧;如无扭矩扳 手,可用普通扳手再拧紧 1/4 到 1/2 圈。 As shown in Fig. 1 or Fig. 2,place tube assembly against the fitting body so that the flat face of the sleeve (or flanged tube) comes in full contact with the O-ring.Thread the nut onto the fitting body by hand and tighten it to the recommended torque table with a torque wrench.If torque wrenches are not available, tighten i1/4 to 1/2 turn with general wrench.

● 重复安装 Reassembly
由于是平面密封型式且与安装力垂直,在安装过程中 O 形圈可能会扭曲,因此每次重复安装时,应检查 O 形圈有无损坏,必要时需更换。 Because the sealing surfaces are flat and perpendicular to the assemple pull,the O-ring may be distorted during assembly. The O-ring should be inspected at each disassembly and replaced when necessary.

● 泄漏原因 Leakage reason
1 O 形圈未正确的安放在 O 形圈槽内。The O-ring is installed in the face seal groove improperly. 2 O 形圈有损伤或损坏。The O-Ring is damaged. 3 接头密封面、接管或翻边有凹坑或其他影响密封的缺陷。 The sealing surface,the tube or the flangeis not flat. 4 翻边过大或过小,不能压住 O 形圈。The flange is too large or too small that the O-ring can't be compressed. 5 O 形圈材质不适用于工作温度。The O-Ring material is not suit for working temperature. 6 O 形圈硬度不够。The O-ring hardness is not enough. 7 连接螺母松开。The connected nut is loosen.

卡套接头 BITE TYPE TUBE FITTINGS
卡套接头概述 BITE TYPE TUBE FITTINGS INSTRUCTIONS 卡套式管接头由三部分组成:接头体、卡套、螺母。当卡套和螺母套在钢管上插入接头体后,旋紧螺母时,卡套前端外侧与接头体锥面贴 合,内刃均匀地咬入无缝钢管,形成有效密封。见图 P1。

24°锥的 W 型柱端按 DIN 3861 标准。卡套采用双刃卡套。 通常情况接头体和螺母表面镀锌处理。接头适用的工作压力最高可达 63MPa,无缝钢管外径最大为 42mm。 Bite type fitting consists of three parts: body, cutting ring and nut. When tightening nut, cutting ring is driven forward on the tube then bites the tube with the edge of cutting ring, this is how sealing is achieved and results in internal ridge inside the tube. See Fig-7.

The tube connection side of fitting is manufactured in accordance with standard: DIN 3861. In general, body and nuts' surface is plated zinc. Bite type fitting can be used in system with Max 63MPa. The connection tube OD is Max 42mm.

卡套接头的装配 BITE TYPE TUBE FITTINGS ASSEMBLY INSTRUCTIONS
● 安装 Assembly 1 锯下合适长度的无缝钢管,去除端口处毛刺。管子端面要与轴线垂直,角度公差不大于 0.5°。如果管子需要折弯,则从管子端面至弯曲 部位的直线段长度不能少于三倍螺母长度。 Cut the tube at right angle and de-burr inside and outside of tube end. Minimum straight length of tube from the starting point of tube bend to the tube end may be 3 times height of the nut. 2 把螺母和卡套套在无缝钢管上。注意螺母和卡套的方向,不要装反了。 Set a nut and cutting ring on the tube. Make sure the cutting ring and the nut are facing the fitting. 3 在预装配接头体螺纹和卡套上涂上润滑油,把管子插入接头体, (管子一定要插到底)用手旋紧螺母。 Lubricate the pre-assembly fitting body threads and cutting ring. Insert tube end into fitting body until it is firmly seated on bottom (fitting shoulder) and hand-tighten the nut. 4 拧紧螺母直至卡套卡住管子,这个转折点可以通过拧紧力矩的增加感觉到( 压力点)。 Tighten nut until ferrule grips tube which is felt by a noticeable increase in torque (increase in force). 5. 达到压力点后,再将压紧螺母拧紧 1/2 圈。Tighten nut 1/2 of a turn after increase in force. 6. 将预装配接头体拆下,检查卡套刃边的嵌入情况,可见的突起带必须填满卡套端面的空间。卡套可以稍旋转,但不能轴向推移。 Disassembly the pre-assembly fitting body .Check penetration of cutting edge.A visible ring of material should fill the space in front of the profile ring end face. Profile ring may turn on tube,but should not be capable of axial displacement. 7. 最终安装, 将实际安装中的接头体的螺纹涂上润滑油、 压紧螺母与之配合拧至可感觉到的拧紧力增加为止. 接着再拧紧 1/2 圈安装完毕。 Lubricate the fitting body to be subsequently installed.Tighten nut until a noticeable increase in force is required.Tighten nut by 1/2 of a turn beyond this point for final assembly.

● 重复安装 Reassembly
所有的卡套接头都可以多次重装,但要保证零件无损坏且清洁。 Fitting can be used many times. To ensure this, parts must be clean and free of defects. 1 把管子插入接头体直至卡套贴紧接头体内锥面,用手拧紧螺母。 Insert the tube into fitting body until cutting ring seats firmly in the fitting and hand-tighten the nut. 2 用扳手拧紧螺母,直至拧紧力矩急剧增大,再拧紧 1/4 至 1/2 圈即可。 Tighten the nut with a wrench by holding the fitting body with a backup wrench until a sharp rise in torque is felt. Further tighten the nut 1/4 to 1/2 turn.

● 检查 Checking up the bite condition
可拆下管子检查装配是否合乎要求:卡套端部的管子上应该有均匀的轻微凸起。卡套不能前后滑动,但允许有轻微转动。 All bite type fitting must be disassembled prior to service to check up if small ridge inside the tube is completely formed around front edge of cutting ring. Otherwise tighten slightly more to have it. Cutting ring may rotate on the tube that doesn't mean wrong installation. The cutting ring shall be refitted once the nut is retightened.

● 泄漏原因 Leakage reason
1 管子没插到底。 When the tube is not fully bottomed 2 螺母没有拧紧。 When the nut is not tightened enough 3 管子外表刮伤或管子不圆。 When the tube is of scratches or oval 4 管子太硬。 When the tube is extremely hard

扩口式接头 FLARED TUBE FITTINGS

扩口式接头概述 FLARED TUBE FITTINGS INSTRUCTIONS ● 扩口式管接头采用图 8 的结构型式,由三部分组成:接头体、衬套、螺母。钢管端口扩口角为 37°。使用时钢管的 37°扩口角紧压在接 头体的锥面上,形成金属密封。使用衬套能吸收并减少管路振动和管子疲劳,并且拧紧螺母时,钢管不会跟着转动。 ● As shown in Fig. 8,the fitting consists of three pieces:the body,sleeve and nut.The tube end is flared at a 37° angle and held between the fitting nose and the sleeve with the nut,providing a very effective seal between the fitting nose and the tube flare.

● 扩口式管接头的连接螺纹有两种:公制螺纹(见 C1-C) ,美制 JIC 螺纹(见 I1-I) 。 ● The flared tube fitting has two connected thread:metric thread (see C1-C) and JIC thred (see I1-I). ● 扩口式管接头安装方便,不用焊接,广泛用于中低压管路系统。由于是金属对金属的硬密封,因此适用温度范围大。 ● It is easy to assemble without weld.It is especially suited for low and medium pressure tube systems.As metal to metal seal,is allows wide operting temperature range for many applications.

扩口式接头安装 FLARED TUBE FITTINGS ASSEMBLY INSTRUCTIONS
● 安装 Assembly 1 在安装前应先垂直锯下钢管(± 1°以内) ,去掉内外径毛刺,清除脏物,需要时套上衬套、螺母后在专用设备上扩口。且尺寸 D 应在 D1 和 D2 之间,见图 9。 Cut tube reasonably square (within +/- degree).Lightly deburr the I.D. and O.D. of the tube end to remove burrs and dirt Set a nut and sleeve on the tube.

2 扩口式管接头半数以上的泄漏是由于扩口或安装不当引起的。安装时应使钢管、扩口轴线与接头体锥面轴线同心。 Over half of the leakage with flared fittings is caused by impoper flaring or installation.When assembled ,the tube,the tube flare and the fitting nose should be aligned. 3 将管子扩口面与接头体锥面对准贴紧后,用手拧紧螺母,再用扭矩扳手按 P 的扭矩建议表扳紧;如无扭矩扳手,可用普通扳手再拧紧 1 到 2 圈,一般大规格 1 圈,小规格 2 圈。 Thread the nut onto the fitting body by hand and tighten it to the recommended torque table with a torque wrench.If torque wrenches are not available, tighten 1 to 2 turns with general wrench.In general ,the small fitting is tighten about 1 turn and the large fitting is tighten about 2 turns.

● 重复安装 Reassembly
所有的扩口式接头都可以多次重装,但要保证零件无损坏且清洁。注意扩口无开裂。 Fitting can be used many times. To ensure this, parts must be clean and free of defects. no tube cracked .

● 泄漏原因 Leakage reason
1 安装时未对准,钢管、扩口轴线与接头体锥面轴线不同心,强制将管子扳到位。 When assembled ,the tube,the tube flare and the fitting nose are not aligned. 2 拧紧力矩过大或过小。The tighten force is too large or too small. 3 管子扩口处开裂。The tube flare is cracked. 4 接头体或管子扩口处的密封面上有影响密封的杂质、凹坑等。 The fitting body or the tube flare is collapsed.

5 连接螺母松开。The connected nut is loosen. 6 过大的扭矩或多次重复使用造成接头结合密封面损坏,丧失密封能力。 The sealing suface is damaged. 7 管子扩口太大或太小,不能与接头体很好的贴合密封。 The tube flare is too large or too small,so the seal between the fitting nose and the tube flare is not effective.

锥管螺纹接头 TAPER THREAD FITTINGS
锥管螺纹接头概述 TAPER THREAD FITTINGS INSTRUCTIONS ● 锥管螺纹接头的连接螺纹有三种:美制 NPT 即 60°密封锥管螺纹(GB/T 12716、ANSI/ASME B1.20.1) ;美制 NPTF 干 密封锥管螺纹(ANSI B1.20.4) ;英制 BSPT 即 55°密封锥管螺纹(GB/T 7306) 。 ● The connected thread has three types:NPT,NPTF and BSPT. ● NPT、BSPT 螺纹连接时,必须使用密封料,NPTF 可以形成金属对金属的密封,但使用时也常常用密封料。密封料可以 有多种,如:生料带、密封胶、厌氧胶、防振密封胶等。 ● NPT、BSPT threads should be assembled with sealant.Pipe thread sealants are available in various forms such as dry pre-applied,tape,paste and anaerobic liquid. ● 由于安装时使用了密封带、胶等,如果安装不当,会对油液造成污染,甚至堵塞油路。 ● Teflon tape,paste,if not applied properly,can contribute to system contamination. ● 小规格螺纹比大规格的密封效果要好,一般 3/4" 以下密封可靠性好。 ● 直通接头用锥螺纹时,连接会比较紧凑,但用于三通或角弯等异型接头时,则较难控制方向,因此建议选用 ISO 6149、 ISO 11926 等可调向接头。 锥管螺纹接头安装 TAPER THREAD FITTINGS ASSEMBLY INSTRUCTIONS ● 安装 Assembly 1 检查油口及连接螺纹,保证无脏物、毛刺及其他异物。 Inspect port and connectors to ensure that threads on both are free of dirt,burrs and excessive nicks. 2 在外螺纹上加密封料。但在第 1、2 牙螺纹上不要覆盖密封料,以免污染系统油液。加生料带时应按顺时针方向(从管 端看)在外螺纹上缠绕 1.5 圈到 2 圈。 Apply sealant to male pipe threads.With any sealant,the first one or two threads should be left uncovered to avoid system contamination.If Teflon tape is used it should be wrapped 1.1/2 to 2 turns in clockwise direction when viewed from the pipe thread end. 3 用手拧紧,再用扳手扳紧 1.5 到 3 圈,一般小规格扳紧 2.5 圈左右,大规格扳紧 2 圈左右。 First tighten the fitting with hand,then with a wrench 1.1/2 to 3 turns.In general ,the small fiiting is tighten about 2.5s turn and the large fitting is tighten about 2 turns. ● 重复安装 Reassembly 锥管螺纹接头可以重复安装,重复安装时应检查密封料是否已损耗,需要时将接头清理干净后重新加密封料安装。 The taper thread fitting can be reassembled.When reassembled,check if sealant has worn thin. ● 泄漏原因 Leakage reason 1 没有使用密封料或密封料已损耗。There is no sealant used or sealant has worn thin. 2 螺纹已磨损。Threads are galled. 3 螺纹制造不正确,接头螺纹已进入油口很深但仍未旋紧。Fitting screws in too far into the port. 4 螺纹有严重缺口或刻痕。Threads are severely nicked. 5 因振动导致螺纹松动。Threads are loosen.

硬管管路的正确布置 Routing of Tube Lines
安装布置硬管管路时,应注意下列几点: Routing of lines should have the follwing characteristics: ● 管子长度要短,管径要合适,流速过高会损失能量 ● The length of tube should be short and tube O.D. should be suitable. ● 两固定点之间的连接,应避免紧拉,需有一个松弯部分,如图 1 所示,以便于装卸,也不会因热胀冷缩而造成严重的拉应力。 ● The tube is in long lines to allow for expansion and contraction,as shown in Fig. 1.

● 管子的弯管半径应尽可能大,其最小弯管半径约为硬管外径的 2.5 倍。管端处应留出直管部分,其距离为管接头螺母高度的二倍以上。 如图 2 所示。 ● The tube bending radius is large as possible.The min. bending radius is about 2.5 of the tube O.D..The tube end should be straight and the spacing is above 2 of the tube nut.See Fig. 2:

● 硬管的主要失效型式为机械振动引起的疲劳失效,因此当管路较长时,需加管夹支撑, 不仅可以缓冲振动,还可减少噪音。在有弯管 的管路中,在弯管的二端直管段处要加支撑管夹固定,在与软管连接时,应在硬管端加管夹支撑。管夹间距推荐如图 3 及表 1。 Fatigue failure due to mechanical vibration accounts for the majority of tube line failures.When the tube line is longer,we can use tube clamps to support the system.Proper clamping of the tube can reduce system noise.Recommended tube clamp spacing as shown in Fig. 1 and table 1:

● 避开障碍物时不要使用太多的 90°弯曲管,流体经过一个 90°的弯曲管的压降比经过两个 45°的弯曲管还大。如图4应选用正确的弯管 角度。 ● Get around obstructions without using excessive amount of 90° bends.Pressure drop due to one 90° bend is greater than that due to two 45°bends.See Fig. 4:

● 布置管路时,尽量使管路远离需经常维修的部件。如图 5 所示。 ● Keep tube lines away from components that require regular maintenance.

● 管路排列应有序、整齐,便于查找故障、保养和维修。如图 6 所示。 ● Have a neat appearance and allow for easy trouble-shooting,maintenance and repair.See Fig. 6:

注:本资料摘自 PARKER CATALOGUE 4300 SEPTRMBER 2000 A38 页及《新编液压工程手册》下册 P。

螺纹扭矩建议表 Recommended Thread Torque
公制 O 形圈平面密封扭矩、74°公制扭矩

密封件 Seal

单位转换表 CONVERSION FACTOR

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液压管接头 | 高压胶管接头标准 | 液压胶管 | 胶管接头 | 高压胶管接头 | 高压胶管接头规格 | 液压接头 | 快速液压接头 |