Automatic centering and clamping device for oil pipe

Abstract

The utility model discloses an automatic centering and clamping device for an oil pipe. The automatic centering and clamping device comprises a centering and clamping box, a centering and clamping mechanism and an air cylinder, 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 push plates and a clamping arm; an oil pipe clamping area is arranged between the ends, away from the push plate, of the two clamping arms. The centering and clamping mechanism is driven by the air cylinder to integrally move, remote control is easy to realize, and automatic operation is facilitated; meanwhile, clamping and loosening between the two clamping arms are completed through hinge fit among the cross beam, the push plate and the clamping arms, clamping, centering and loosening of the oil pipe are achieved, the structure is simple and novel, the clamping force is large, and the centering effect is good; in addition, the V-shaped groove is formed in the end of the clamping arm, contact with the oil pipe is increased, single-side thrust pressing and three-point pressing in a traditional clamping device are avoided, and reliability is high.

Description

Technical Field

[0001] This utility model belongs to the field of oilfield equipment maintenance technology, and in particular relates to an automatic centering and clamping device for oil pipes. Background Technology

[0002] Oilfield tubing typically exceeds 9 meters in length and is threaded at both ends. During repair or fabrication of the inner lining, proper clamping is required to ensure both the quality of the repair and the quality of the inner lining. Currently used clamping devices employ single-sided thrust clamping at three points, resulting in either improper clamping or insufficient clamping during operation, leading to low reliability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing an automatic centering and clamping device for oil pipes. The centering and clamping mechanism is driven by a cylinder to move as a whole, which can be easily controlled remotely and is convenient for automated operation. At the same time, the hinged cooperation between the crossbeam, the push plate and the clamping arm completes the clamping and loosening between the two clamping arms, realizing the clamping, centering and loosening of the oil pipe. The structure is simple and novel, with a large clamping force and good centering effect. In addition, a V-groove is opened at the end of the clamping arm to increase the contact with the oil pipe and avoid the single-sided thrust clamping and three-point clamping in traditional clamping devices, thus ensuring high reliability.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an automatic centering and clamping device for oil pipes, including a centering and clamping box, a centering and clamping mechanism disposed in the centering and clamping box, and a cylinder disposed at the bottom of the centering and clamping box and connected to the centering and clamping mechanism.

[0005] The cylinder is fixed to the bottom of the centering clamping box by screws, and the piston rod of the cylinder extends through the bottom of the centering clamping box into the centering clamping box;

[0006] The centering clamping mechanism includes a horizontal beam arranged in the centering clamping box, two push plates symmetrically hinged to the ends of the beam, and clamping arms hinged to the push plates away from the ends of the beam; the area between the ends of the two clamping arms away from the push plates is a tubing clamping area; a V-groove is provided on the side of the clamping arm away from the push plate, and the V-groove is arranged in the tubing clamping area.

[0007] Furthermore, the centering clamping box includes a horizontally arranged lower support plate, an upper support plate horizontally arranged above the lower support plate, and two side plates vertically arranged between the lower support plate and the upper support plate. The lower support plate, the upper support plate, and the two side plates are integrally formed, and the lower support plate, the upper support plate, and the two side plates form a box-like structure. The cylinder is fixed to the bottom of the lower support plate by screws, and the lower support plate has a through hole for the piston rod to pass through.

[0008] Furthermore, the crossbeam and the piston rod are connected, and the crossbeam has a through hole for the piston rod to pass through. The piston rod passes through the through hole on the lower support plate and the through hole on the crossbeam in sequence, and is then connected to the crossbeam by a nut.

[0009] Furthermore, one end of the push plate is hinged to the crossbeam via a crossbeam pin, and the other end of the push plate is hinged to the clamping arm via a push plate pin. The middle part of the clamping arm is connected to the upper support plate via a clamping arm fixing pin.

[0010] The beneficial effects of this utility model are that the overall movement of the centering and clamping mechanism is driven by the cylinder, which can be easily controlled remotely and facilitates automated operation; at the same time, the hinged cooperation between the crossbeam, push plate and clamping arm is used to complete the clamping and loosening between the two clamping arms, realizing the clamping, centering and loosening of the oil pipe. The structure is simple and novel, with large clamping force and good centering effect; in addition, a V-groove is opened at the end of the clamping arm to increase the contact with the oil pipe and avoid the single-sided thrust clamping and three-point clamping in traditional clamping devices, so as to achieve high reliability.

[0011] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 1—Cylinder; 2—Lower support plate; 3—Side plate;

[0015] 4—Crossbeam pin; 5—Push plate pin; 6—Clamping arm fixing pin;

[0016] 7—Clamping arm; 8—Upper support plate; 9—Push plate;

[0017] 10—Crossbeam; 11—Centering clamping box; 12—Nut;

[0018] 13—oil pipe. Detailed Implementation

[0019] like Figure 1As shown, the present invention includes a centering clamping box 11, a centering clamping mechanism disposed in the centering clamping box 11, and a cylinder 1 disposed at the bottom of the centering clamping box 11 and connected to the centering clamping mechanism.

[0020] The cylinder 1 is fixed to the bottom of the centering clamping box 11 by screws, and the piston rod of the cylinder 1 extends through the bottom of the centering clamping box 11 into the centering clamping box 11.

[0021] The centering clamping mechanism includes a horizontal beam 10 arranged in the centering clamping box 11, two push plates 9 symmetrically hinged to the ends of the horizontal beam 10, and a clamping arm 7 hinged to the end of the push plate 9 away from the horizontal beam 10; the area between the ends of the two clamping arms 7 away from the push plate 9 is the tubing clamping area; a V-shaped groove is provided on the side of the clamping arm 7 away from the push plate 9, and the V-shaped groove is arranged in the tubing clamping area.

[0022] In actual use, the centering and clamping mechanism is driven by cylinder 1 to move as a whole, which can be easily controlled remotely and facilitates automated operation. At the same time, the hinged cooperation between the crossbeam 10, the push plate 9 and the clamping arm 7 is used to complete the clamping and loosening between the two clamping arms 7, realizing the clamping, centering and loosening of the oil pipe 13. The structure is simple and novel, with large clamping force and good centering effect. In addition, a V-groove is opened at the end of the clamping arm 7 to increase the contact with the oil pipe 13 and avoid the single-sided thrust clamping and three-point clamping in traditional clamping devices, which has high reliability.

[0023] It should be noted that this centering clamping device can be used individually or in multiple sets in parallel, and installed on a fixed platform. During installation, it is essential to ensure that the devices are parallel and their centers coincide. This centering clamping device is driven by a single cylinder 1, which is fixed to the lower support plate 2 with screws. The side plate 3 connects the upper support plate 8 and the lower support plate 2 together by welding, forming a box-like structure.

[0024] When this utility model is in use, when the oil pipe 13 needs to be centered and clamped, the oil pipe 13 is first placed between the clamping arms 7, the power supply of the cylinder control solenoid valve is turned on, and air is supplied to the cylinder 1. At this time, the piston rod of the cylinder 1 is pushed out under the action of air pressure. Since the crossbeam 10 and the piston rod are fixed together by the nut 12, the crossbeam 10 moves upward. Since one end of the push plate 9 is connected to the crossbeam 10 through the crossbeam pin 4, and the other end is connected to the clamping arm 7 through the push plate pin 5, the push plate 9 is driven to extend to both sides, thereby driving the clamping arm 7 to rotate around the clamping arm fixing pin 6, so that the V-shaped grooves on the two clamping arms 7 move towards the center, thereby centered and clamping the oil pipe 13.

[0025] like Figure 1As shown, in this embodiment, the centering clamping box 11 includes a horizontally arranged lower support plate 2, a horizontally arranged upper support plate 8 above the lower support plate 2, and two side plates 3 vertically arranged between the lower support plate 2 and the upper support plate 8. The lower support plate 2, the upper support plate 8, and the two side plates 3 are integrally formed, and the lower support plate 2, the upper support plate 8, and the two side plates 3 form a box-like structure. The cylinder 1 is fixed to the bottom of the lower support plate 2 by screws, and the lower support plate 2 has a through hole for the piston rod to pass through.

[0026] like Figure 1 As shown, in this embodiment, the crossbeam 10 and the piston rod are connected. The crossbeam 10 has a through hole for the piston rod to pass through. The piston rod passes through the through hole on the lower support plate 2 and the through hole on the crossbeam 10 in sequence, and is then connected to the crossbeam 10 by a nut 12.

[0027] like Figure 1 As shown, in this embodiment, one end of the push plate 9 is hinged to the crossbeam 10 via the crossbeam pin 4, and the other end of the push plate 9 is hinged to the clamping arm 7 via the push plate pin 5. The middle part of the clamping arm 7 is connected to the upper support plate 8 via the clamping arm fixing pin 6.

[0028] In actual use, the upper support plate 8 has two clamping arm fixing pin holes for installing clamping arm fixing pins 6; the clamping arm 7 can swing left and right around the clamping arm fixing pins 6. The V-groove on the clamping arm 7 is used for centering and clamping the oil pipe 13. The clamping arm 7 also has cylindrical holes for fixing the push plate pin 5. One end of the push plate 9 is connected to the clamping arm 7 by the push plate pin 5, and the other end is connected to the crossbeam 10 by the crossbeam pin 4.

[0029] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An automatic centering and clamping device for oil pipes, characterized in that: It includes a centering clamping box (11), a centering clamping mechanism disposed in the centering clamping box (11), and a cylinder (1) disposed at the bottom of the centering clamping box (11) and connected to the centering clamping mechanism; The cylinder (1) is fixed to the bottom of the centering clamping box (11) by screws, and the piston rod of the cylinder (1) extends through the bottom of the centering clamping box (11) into the centering clamping box (11). The centering clamping mechanism includes a horizontal beam (10) arranged in the centering clamping box (11), two push plates (9) symmetrically hinged to the ends of the horizontal beam (10), and clamping arms (7) hinged to the ends of the push plates (9) away from the horizontal beam (10); the ends of the two clamping arms (7) away from the push plates (9) are the oil pipe clamping area; a V-shaped groove is provided on one side of the clamping arm (7) away from the push plate (9), and the V-shaped groove is arranged in the oil pipe clamping area.

2. The automatic centering and clamping device for oil pipes according to claim 1, characterized in that: The centering clamping box (11) includes a horizontally arranged lower support plate (2), a horizontally arranged upper support plate (8) above the lower support plate (2), and two side plates (3) arranged vertically between the lower support plate (2) and the upper support plate (8). The lower support plate (2), the upper support plate (8) and the two side plates (3) are integrally formed, and the lower support plate (2), the upper support plate (8) and the two side plates (3) form a box-like structure. The cylinder (1) is fixed to the bottom of the lower support plate (2) by screws, and the lower support plate (2) has a through hole for the piston rod to pass through.

3. The automatic centering and clamping device for oil pipes according to claim 2, characterized in that: The crossbeam (10) is connected to the piston rod. The crossbeam (10) has a through hole for the piston rod to pass through. The piston rod passes through the through hole on the lower support plate (2) and the through hole on the crossbeam (10) in sequence and is then connected to the crossbeam (10) by a nut (12).

4. The automatic centering and clamping device for oil pipes according to claim 2, characterized in that: One end of the push plate (9) is hinged to the crossbeam (10) via the crossbeam pin (4), and the other end of the push plate (9) is hinged to the clamping arm (7) via the push plate pin (5). The middle part of the clamping arm (7) is connected to the upper support plate (8) via the clamping arm fixing pin (6).

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