阅读说明：本技术 一种无缝管穿孔机顶头冷却装置 (Seamless pipe piercing mill top cooling device ) 是由 杨名旗 于 2018-06-27 设计创作，主要内容包括：本发明公开了一种无缝管穿孔机顶头冷却装置,其包括穿孔小车车体、中空的旋转主轴和冷却水管,所述旋转主轴通过轴承可旋转地设置于穿孔小车车体内,其中,所述穿孔小车车体的尾部安装有连接架,所述连接架的端部安装有密封盖,所述密封盖上开设有通孔,所述冷却水管穿过所述通孔并穿入旋转主轴内到达顶头位置,且所述冷却水管伸出连接架的一端通过旋转接头连接进水管。上述无缝管穿孔机顶头冷却装置加装旋转接头,在轧制过程中,顶头转动带动冷却水管随旋转主轴一起转动,避免在轧制过程中冷却水管断裂,并能保持水流压力,降低顶头温度。不仅降低了维护成本；而且降低故障时间,提高了有效作业率,提升了产能。(The invention discloses a seamless pipe perforating machine top cooling device which comprises a perforating trolley body, a hollow rotating main shaft and a cooling water pipe, wherein the rotating main shaft is rotatably arranged in the perforating trolley body through a bearing, the tail part of the perforating trolley body is provided with a connecting frame, the end part of the connecting frame is provided with a sealing cover, the sealing cover is provided with a through hole, the cooling water pipe penetrates through the through hole and penetrates into the rotating main shaft to reach the top position, and one end of the cooling water pipe, extending out of the connecting frame, is connected with a water inlet pipe through a rotating joint. The rotary joint is additionally arranged on the seamless tube puncher top cooling device, the cooling water pipe is driven to rotate along with the rotary main shaft by the rotation of the top in the rolling process, the cooling water pipe is prevented from being broken in the rolling process, the water flow pressure can be kept, and the temperature of the top is reduced. Not only the maintenance cost is reduced; and the fault time is reduced, the effective operation rate is improved, and the productivity is improved.)

1. The utility model provides a seamless pipe perforator top cooling device, its is including perforation dolly automobile body, hollow rotating spindle and cooling water pipe, rotating spindle passes through the bearing and rotatably sets up in the perforation dolly automobile body, wherein, the link is installed to the afterbody of perforation dolly automobile body, sealed lid is installed to the tip of link, the through-hole has been seted up to sealed covering, cooling water pipe passes the through-hole reachs the top position in penetrating rotating spindle, just the one end that cooling water pipe stretches out the link passes through rotary joint and connects the inlet tube.

2. The seamless tube piercing plug cooling apparatus according to claim 1, wherein a lubricated bearing is installed between the connection frame and the cooling water pipe.

3. The seamless tube piercing plug cooling device according to any one of claims 1 or 2, wherein the connection frame is provided with a connection hole, a threaded hole is formed in a position corresponding to the piercing carriage body, and a connection bolt is passed through the connection hole and locked in the threaded hole to fix the connection frame to the piercing carriage body.

4. The seamless pipe piercing plug cooling device according to claim 1, wherein a rotary water seal is provided between the through-hole and the cooling water pipe.

Technical Field

The invention relates to a seamless tube puncher, in particular to a cooling device for a plug of the seamless tube puncher.

Background

The hot-rolled seamless steel pipe is rolled by a piercer, and the basic process of piercing and rolling comprises the following steps: the roller, guide plate and top head are formed into a closed hole pattern, and the high-temperature metal can be continuously deformed in the region formed by said hole pattern, and finally the hollow pipe blank can be rolled out from the solid pipe blank. The roller and the guide plate are relatively fixedly installed according to the technological requirements, the ejector head is installed on the ejector rod of the ejector rod trolley, and the rolling position and the post-working position are periodically alternated along with the action requirement of the rolling period. As the solid tube blank is punched into the hollow tube blank, the metal deformation is mainly concentrated on the top head; meanwhile, the ejector head works at high temperature and high pressure, so that the ejector head is easy to wear or the nose part is pressed and piled, the ejector head cannot be used for a long time, and the ejector head is frequently replaced. Water cooling of the plug during operation is required.

At present, a conventional seamless tube piercing mill plug cooling device is shown in fig. 1, fig. 1 is a schematic structural diagram of the conventional seamless tube piercing mill plug cooling device, and the conventional seamless tube piercing mill plug cooling device comprises a piercing trolley body 10, a hollow rotating main shaft 11, a cooling water pipe 12 and a fixed bracket 13, wherein the rotating main shaft 11 is rotatably arranged in the piercing trolley body 10 through a bearing 14, the cooling water pipe 12 penetrates into the rotating main shaft 11 from the tail part of the piercing trolley body 10 to reach a plug position, and the cooling water pipe 12 is connected to the piercing trolley body 10 through the fixed bracket 13, and the connection mode of the cooling water pipe 12 with the structure can not rotate along with the rotating main shaft 11 in a rolling process in a specific working process, so that the cooling water pipe 12 is frequently broken, the seamless tube puncher can not work normally, and the effective operation rate of the seamless tube puncher is influenced.

Disclosure of Invention

The invention aims to provide a cooling device for a seamless tube piercing mill top, which has the characteristics of reducing the fault time, improving the effective operation rate and improving the production performance, and solves the problems of the cooling device for the seamless tube piercing mill top in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a seamless pipe perforator top cooling device, its is including perforation dolly automobile body, hollow rotating spindle and cooling water pipe, rotating spindle passes through the bearing and rotatably sets up in the perforation dolly automobile body, wherein, the link is installed to the afterbody of perforation dolly automobile body, sealed lid is installed to the tip of link, the through-hole has been seted up to sealed covering, cooling water pipe passes the through-hole reachs the top position in penetrating rotating spindle, just the one end that cooling water pipe stretches out the link passes through rotary joint and connects the inlet tube.

In particular, a lubricating bearing is arranged between the connecting frame and the cooling water pipe.

Particularly, a connecting hole is formed in the connecting frame, a threaded hole is formed in the connecting frame corresponding to the perforated trolley body, and a connecting bolt penetrates through the connecting hole and is locked in the threaded hole to fix the connecting frame on the perforated trolley body.

In particular, a rotary water seal is arranged between the through hole and the cooling water pipe.

Compared with the prior art, the seamless tube puncher has the advantages that the rotary joint is additionally arranged on the puncher pin cooling device, the puncher pin rotates to drive the cooling water pipe to rotate along with the rotary main shaft in the rolling process, the cooling water pipe is prevented from being broken in the rolling process, water flow pressure can be kept, and the puncher pin temperature is reduced. Not only the maintenance cost is reduced; and the fault time is reduced, the effective operation rate is improved, and the productivity is improved.

Drawings

FIG. 1 is a schematic structural view of a conventional seamless tube piercing plug cooling apparatus;

fig. 2 is a schematic structural view of a seamless tube piercing plug cooling apparatus according to embodiment 1 of the present invention.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 2, fig. 2 is a schematic structural view of a seamless tube piercing plug cooling apparatus according to embodiment 1 of the present invention.

In the embodiment, the seamless tube puncher top cooling device comprises a punching trolley body 20, a hollow rotating main shaft 21 and a cooling water pipe 22, the rotating main shaft 21 is rotatably arranged in the perforated trolley body 20 through a bearing 23, the tail part of the perforated trolley body 20 is provided with a connecting frame 24 through a connecting component, a sealing cover 25 is arranged at the end part of the connecting frame 24, a through hole is arranged on the sealing cover 25, the cooling water pipe 22 passes through the through hole and penetrates into the rotating main shaft 21 to reach the top position, a rotary water seal is arranged between the through hole and the cooling water pipe 22, one end of the cooling water pipe 22 extending out of the connecting frame 24 is connected with a water inlet pipe 27 through a rotary joint 26, a lubricating bearing 28 is arranged between the connecting frame 24 and the cooling water pipe 22.

The connecting assembly comprises a connecting hole arranged on the connecting frame 24, a threaded hole is arranged on the trolley body 20 corresponding to the through hole, and a connecting bolt penetrates through the connecting hole and is locked in the threaded hole to fix the connecting frame 24 on the trolley body 20.

In the rolling process, the rotation of the top head drives the cooling water pipe 22 to rotate, so that the cooling water pipe 22 rotates along with the rotating main shaft 21, the torsion between the cooling water pipe and the rotating main shaft is eliminated, and the cooling water pipe 22 is prevented from being broken in the rolling process.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the invention, which are intended to be within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.