CN-224223717-U - Automatic centering clamping device for oil pipe

CN224223717UCN 224223717 UCN224223717 UCN 224223717UCN-224223717-U

Abstract

The utility model discloses an automatic centering clamping device for an oil pipe, which comprises a centering clamping box, a centering clamping mechanism and an air cylinder, wherein a piston rod of the air cylinder penetrates through the bottom of the centering clamping box and extends into the centering clamping box, the centering clamping mechanism comprises a cross beam, two pushing plates and clamping arms, and an oil pipe clamping area is arranged between the ends, far away from the pushing plates, of the two clamping arms. The centering clamping mechanism is driven by the air cylinder to integrally move, remote control is easy to realize, automatic operation is convenient, meanwhile, the clamping and loosening between the two clamping arms are completed by utilizing hinged coordination among the cross beam, the push plate and the clamping arms, clamping centering and loosening of an oil pipe are realized, the structure is simple and novel, the clamping force is high, the centering effect is good, in addition, a V-shaped groove is formed at the end part of the clamping arm, contact with the oil pipe is increased, single-side thrust compression and 3-point compression in the traditional clamping device are avoided, and the reliability is high.

Inventors

ZHANG QINGFENG
HOU XIAOKAI
HU BING

Assignees

西安奥宏石化安装工程有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (4)

1. An automatic centering and clamping device for an oil pipe is characterized by comprising a centering and clamping box (11), a centering and clamping mechanism arranged in the centering and clamping box (11) and an air cylinder (1) arranged at the bottom of the centering and clamping box (11) and connected with the centering and clamping mechanism; The cylinder (1) is fixed at the bottom of the centering clamping box (11) through a screw, and a piston rod of the cylinder (1) penetrates through the bottom of the centering clamping box (11) and extends into the centering clamping box (11); The centering clamping mechanism comprises a cross beam (10) horizontally arranged in a centering clamping box (11), two push plates (9) symmetrically hinged to the end parts of the cross beam (10) and clamping arms (7) hinged to the end parts of the push plates (9) far away from the end parts of the cross beam (10), an oil pipe clamping area is arranged between the end parts of the two clamping arms (7) far away from the push plates (9), and V-shaped grooves are formed in one sides of the clamping arms (7) far away from the end parts of the push plates (9) and are distributed in the oil pipe clamping area.
2. The automatic centering and clamping device for the oil pipe, as set forth in claim 1, is characterized in that the centering and clamping box (11) comprises a lower supporting plate (2) which is horizontally arranged, an upper supporting plate (8) which is horizontally arranged above the lower supporting plate (2), and two side plates (3) which are vertically arranged between the lower supporting plate (2) and the upper supporting plate (8), wherein the lower supporting plate (2), the upper supporting plate (8) and the two side plates (3) are integrally formed, the lower supporting plate (2), the upper supporting plate (8) and the two side plates (3) are enclosed into a box-type structure, the air cylinder (1) is fixed at the bottom of the lower supporting plate (2) through screws, and through holes for the piston rods to pass through are formed in the lower supporting plate (2).
3. The automatic centering and clamping device for the oil pipe, as set forth in claim 2, is characterized in that the cross beam (10) is connected with the piston rod, a through hole for the piston rod to pass through is formed in the cross beam (10), and the piston rod is connected with the cross beam (10) through a nut (12) after sequentially passing through the through hole in the lower support plate (2) and the through hole in the cross beam (10).
4. An automatic centering and clamping device for an oil pipe according to claim 2, wherein one end of the push plate (9) is hinged with a beam (10) through a beam pin (4), the other end of the push plate (9) is hinged with a clamping arm (7) through a push plate pin (5), and the middle part of the clamping arm (7) is connected with the upper supporting plate (8) through a clamping arm fixing pin (6).

Description

Automatic centering clamping device for oil pipe Technical Field The utility model belongs to the technical field of oilfield equipment maintenance, and particularly relates to an automatic centering and clamping device for an oil pipe. Background The oil pipe used in the oil field is generally more than 9 meters, and the two ends of the oil pipe are provided with petroleum pipe threads, so that the oil pipe needs to be positioned and clamped, namely centered and clamped, in the process of maintaining or processing the lining oil pipe, and the repair quality and the processing quality of the lining oil pipe can be ensured. The existing clamping device is pressed by single-side thrust and 3 points, so that the clamping is not correct or tight in the using process, and the reliability is not high. Disclosure of utility model The technical problem to be solved by the utility model is to provide the automatic centering clamping device for the oil pipe, aiming at the defects in the prior art, the centering clamping mechanism is driven to integrally move by the air cylinder, long-distance control is easy to realize, automatic operation is convenient, meanwhile, the clamping and loosening between two clamping arms are completed by utilizing hinged coordination among the cross beam, the push plate and the clamping arms, the clamping centering and loosening of the oil pipe are realized, the structure is simple and novel, the clamping force is high, the centering effect is good, in addition, the V-shaped groove is formed at the end part of the clamping arm, the contact with the oil pipe is increased, and single-side thrust compression and 3-point compression in the traditional clamping device are avoided, and the reliability is high. In order to solve the technical problems, the technical scheme adopted by the utility model is that the automatic centering clamping device for the oil pipe comprises a centering clamping box, a centering clamping mechanism arranged in the centering clamping box and an air cylinder arranged at the bottom of the centering clamping box and connected with the centering clamping mechanism; the cylinder is fixed at the bottom of the centering clamping box through a screw, and a piston rod of the cylinder penetrates through the bottom of the centering clamping box and extends into the centering clamping box; The centering clamping mechanism comprises a cross beam horizontally arranged in the centering clamping box, two push plates symmetrically hinged to the end parts of the cross beam, and clamping arms hinged to the end parts of the push plates, which are far away from the end parts of the cross beam, wherein an oil pipe clamping area is arranged between the end parts of the two clamping arms, which are far away from the push plates, and a V-shaped groove is formed in one side of each clamping arm, which is far away from the end parts of the push plates, and is arranged in the oil pipe clamping area. Further, the centering clamping box comprises a lower supporting plate, an upper supporting plate and two side plates, wherein the lower supporting plate is horizontally arranged, the upper supporting plate is horizontally arranged above the lower supporting plate, the two side plates are vertically arranged between the lower supporting plate and the upper supporting plate, the lower supporting plate, the upper supporting plate and the two side plates are integrally formed, the lower supporting plate, the upper supporting plate and the two side plates enclose a box-type structure, the air cylinder is fixed at the bottom of the lower supporting plate through screws, and a through hole for a piston rod to pass through is formed in the lower supporting plate. Further, the cross beam is connected with the piston rod, a through hole for the piston rod to pass through is formed in the cross beam, and the piston rod sequentially passes through the through hole in the lower support plate and the through hole in the cross beam and then is connected with the cross beam through a nut. Further, one end of the push plate is hinged with the cross beam through a cross beam pin, the other end of the push plate is hinged with the clamping arm through a push plate pin, and the middle part of the clamping arm is connected with the upper supporting plate through a clamping arm fixing pin. The centering clamping mechanism is driven by the air cylinder to integrally move, long-distance control is easy to achieve, automatic operation is convenient, meanwhile, the clamping and loosening between the two clamping arms are completed by means of hinged coordination among the cross beam, the push plate and the clamping arms, clamping centering and loosening of an oil pipe are achieved, the centering clamping mechanism is simple and novel in structure, high in clamping force and good in centering effect, in addition, a V-shaped groove is formed in the end part of the clamping arm, contact with the oil pipe is increased, sing