pre-tightening machine

coupling starter & screw on unit

The Auto pre-tightening unit is consisted of coupling arranging rollers for greasing, greasing device, ect

100000.00
Stock 10 Piece
  • Model: YJ340

Equipment composition and description

自动预拧机包括接箍涂油排料滚道、接箍涂油机、预紧机主机、拧扣机、步进机、管端通径机液压系统、和控制系统等。

The Auto pre-tightening unit is consisted of coupling arranging rollers for greasing, greasing device, pre-tightening machine, bucking machine, stepping machine, pipe ends drifting machine, hydraulic system, and control system, etc.

1. 接箍涂油排料滚道:设有接箍存放排料滚道、涂油工位、送料工位、接箍长度测量功能及送料机构。

Coupling arranging raceway for greasing: includes saving &arranging raceway. Greasing station, feeding station, coupling measuring and feeding device.


2. 接箍涂油机:主要由机架、传动箱总成(含气动马达、涂油杆、气阀等),推进气缸、油脂泵等组成。

  Coupling greasing device:it is consisted of frame, transmission box assembly(pneumatic motor, greasing rod, air valve, etc), pushing cylinder,and grease pump, etc.


3. 预紧机主机:由液压卡盘总成(卡盘总成包括主轴、传动齿轮、驱动马达组件、定位油缸组件、定位盘、夹紧油缸组件、弹性托辊组件)推进油缸、接箍取料机构、浮动机构、机架等组成。

Pre-tightening machine: is is consisted of hydraulic chuck assembly(includes spindle, transmission gear, driving motor assembly, positioning cylinder assembly, positioning disc, clamping cylinder assembly, elastic roller assembly)pushing cylinder, tacking mechanism, floating mechanism, and frame.


4.拧接机(Bucking machine)

采用型号为拧扣机:型号YNJG400,当完成预紧的油套管放到拧扣机工位后,开始拧扣,编码器记录拧紧深度,PLC将接箍长度,预紧深度,拧扣深度比较计算后得出J值;

Bucking machine model:YNJG400, put the pipe onto the bucking machine after pre-tightened, starts to make up the pipe, the encoder records the depth  and PLC analyse and calculate the coupling length, pre-tightening depth and making-up depth to obtain the J value.



1. 预拧及拧接范围(Application)  Ф114Ф34041/251/265/87″8 95/8″″103/4133/8

2. 钢管长度(Applicable Length)9-12.5

3. 钢管最大单重(Unit weight of pipe)1700KG

4. 适用扣型:API 圆螺纹,偏梯螺纹及各种有肩或无肩特殊扣型

Applicable connections: API (round & BTC)and Premium connections(with or without shoulder)

5. 适用钢级:Group 1 –Group4

Applicable steel grade:Group 1 –Group4

6. 最大预拧扭矩 (Max.pre-tightening torque)500N .M

7. 最大拧接扭矩:80KN.M(最大压力达到20Mpa时)

Max.screwing torque:80KN.M @ 20Mpa pressure.

8. 牙痕要求:管体及接箍表面达到API要求;

Die marking: according to API standard.

9. 自动测量J值公差精度:±0.5mm

J value tolerance: ±0.5mm

10. 拧接后接箍椭圆度:≤0.075-0.15%

Ovality of coupling after screwing:≤0.075-0.15%

11. 预拧机接箍自动涂油:根据接箍尺寸大小可调整涂油量

Auto-greasing into the coupling:can be adjusted to the coupling size.

12. 生产节拍:50-80/小时

Working speed:50-80connections/hour

13. 控制方式: 手动、半自动、自动控制三种模式

Control method:manual,semi/full-Auto modes.

14. 拧接记录及报表(Screwing record & reports)

14.1 能拧接API标准扣型及有肩和无肩特殊扣型,可显示扭矩/圈数变化曲线,圈数和扭矩值自动记录,自动对特殊扣拐点扭矩进行检测分析,以及根据J值自动判定合格与不合格品,同时形成钢管接箍拧接曲线并保存

The unit can be used for API and Premium connections(with or without shoulder), it can display the torque-turns graph, and record the torque & turns automatically,  detect & analyze the inflection point of premium connection,  judge the connection is qualified or not according to the J value and save the screwing graph.

14.2 拧接工位的拧接数据可形成班、日、月产量和质量报表

The screwing data can be saved as forms of daily, monthly production and quality reports

15. 自动控制及通讯要求

Auto-control & communication requirements

采用西门子PLC控制系统,LABVIEW软件做人机界面,通过以太网与上位机连接,并与总控室进行通讯,在总控室即能观察到设备运行状态,同时具有远程对话及故障诊断功能。

Siemens PLC as control system. LABVIEW  human-computer interface, connect to upper PC with Ethernet and communication with the control room.So it can realize the observation, remote dialogue and fault diagnosis in the control room.