A three-roller centering pre-clamping conveying device for steel pipe flaw detection

Abstract

The utility model discloses a kind of steel pipe flaw detection three-roll centering front clamping conveying devices, it is related to the centering conveying field of steel pipe being detected, including No. 1 shell, one end of No. 1 shell is equipped with No. 2 shell, the inside of No. 1 shell is equipped with No. 2 cylinder up and down, No. 2 cylinder is connected with centering mechanism, the front end of No. 1 shell is equipped with fixed lug up and down position, the fixed lug is fixedly connected with the piston rod end portion of No. 2 cylinder, the front end plate of No. 1 shell and No. 2 shell, the center hole for pipe to be worn out is established in the center of rear end plate;The upper rotary arm is rotatably installed on the upper portion of both ends of No. 2 shell.The utility model is by being equipped with rotating mechanism, clamping mechanism and centering mechanism, in the device use process, the end of steel pipe being detected is clamped and centered, and can be moved, so, steel pipe can avoid bending problem in moving process.

Description

Technical Field

[0001] This utility model relates to the field of centering and conveying of steel pipes to be inspected, specifically a three-roller centering and pre-clamping conveying device for steel pipe inspection. Background Technology

[0002] During the flaw detection process of steel pipes, it is necessary to move the steel pipe while it is being inspected. In the existing technology, a pushing force is generally applied to one end of the steel pipe to achieve the purpose of moving the steel pipe. In this way, during the movement of the steel pipe, one end of the steel pipe gradually moves away from the device, and the steel pipe bends under gravity, resulting in deformation of the steel pipe. Utility Model Content

[0003] The purpose of this utility model is to provide a steel pipe flaw detection three-roller centering front clamping and conveying device in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a three-roller centering clamping and conveying device for steel pipe flaw detection, comprising a first outer shell, a second outer shell installed at one end of the first outer shell, a second cylinder installed both above and below inside the first outer shell, the second cylinder being connected to a centering mechanism, fixing ears installed at the upper and lower positions of the front end of the first outer shell, the fixing ears being fixedly connected to the piston rod end of the second cylinder, and a central hole for the pipe to pass through being opened at the center of the front and rear plates of the first and second outer shells; Upper rotating arms are rotatably mounted on the upper ends of the second outer shell, and lower rotating arms are rotatably mounted on the lower ends of the second outer shell. The upper and lower rotating arms are symmetrically distributed about the transverse central axis of the second outer shell. A rotating mechanism is mounted on one horizontal bar of the upper rotating arm, and a conveying mechanism is mounted on the vertical bar of the upper and lower rotating arms. A clamping mechanism is mounted on the inner side of the vertical bar of the upper and lower rotating arms.

[0005] As a further embodiment of this utility model: the rotating mechanism includes a drive wheel coaxially arranged with the rotation point of the upper rotating arm, the drive wheel being rotatably connected to the upper rotating arm, a tension wheel being rotatably mounted on the crossbar of the upper rotating arm, and the drive wheel and the tension wheel being connected to a driven wheel via a transmission belt; The conveying mechanism includes an upper conveying wheel coaxially connected to the driven wheel. A support sleeve is rotatably mounted on the outer wall of the synchronous shaft connected to the driven wheel and the upper conveying wheel. The support sleeve is fixedly connected to the bottom end of the longitudinal rod of the upper rotating arm. The conveying mechanism also includes another support sleeve fixedly connected to the top end of the longitudinal rod of the lower rotating arm. The inner wall of the support sleeve is rotatably connected to the rotating shaft of the lower conveying wheel through a bearing. The lower conveying wheel and the upper conveying wheel are symmetrically distributed vertically. A crank handle is fixedly installed at one end of the rotating shaft of the lower conveying wheel.

[0006] As a further embodiment of this utility model: the clamping mechanism includes an upper rotating component fixedly connected to the inner side of the upper rotating arm's longitudinal rod portion, and a lower rotating component fixedly connected to the inner side of the lower rotating arm's longitudinal rod portion, with the top of the piston rod of the hydraulic push cylinder and the bottom of the outer casing respectively rotatably connected to the upper rotating component and the lower rotating component.

[0007] As a further embodiment of this utility model: the centering mechanism includes a fixing plate fixedly installed on the outer side of the first outer shell of the second cylinder liner by a fixing member, a sliding frame fixedly installed between the fixing plates, a sliding sleeve fixedly installed between the two sliding frames, and a hollow cylinder integrally formed at the center of the sliding frame and aligned with the center hole.

[0008] As a further embodiment of this utility model: a guide shaft is fixedly installed between the front and rear end plates of the first outer shell, the guide shaft is inserted into the inner wall of the sliding sleeve, one end of the sliding sleeve extends through to the outside of the front sliding frame, and the outer periphery of the sliding sleeve is welded with an outwardly protruding rotating ear located on the front sliding frame.

[0009] As a further embodiment of this utility model: the centering mechanism further includes a rotating plate rotatably mounted on the outside of the rotating ear, the rotating plate extending through to the outside of the first outer shell, the first outer shell having a slot for the rotating plate to pass through, a rotating frame rotatably mounted on the end of the rotating plate away from the rotating ear, a centering roller rotatably mounted on the output end of the rotating frame, the inner side of the middle position of the rotating frame being rotatably connected to the center ear, the center ear being fixedly mounted on the front end of the first outer shell, and the three centering rollers being equidistantly distributed in the circumferential direction with the center hole as the center.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a rotating mechanism, a clamping mechanism and a centering mechanism, the end of the steel pipe being inspected is clamped and centered during the use of the device, and can be moved. In this way, the problem of the steel pipe bending during the movement can be avoided. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the mounting of the fixing ear of this utility model; Figure 3 This is a schematic diagram of the installation of the No. 2 cylinder of this utility model; Figure 4 This is a schematic diagram of the installation of the sliding bracket of this utility model; Figure 5 This is a schematic diagram of the installation of the centering roller of this utility model; Figure 6 This is a schematic diagram of the installation of the rotating mechanism of this utility model; Figure 7 This is a schematic diagram of the crank handle installation of this utility model; Figure 8 This is a schematic diagram of the installation of the hydraulic pusher cylinder of this utility model.

[0012] In the diagram: 1. Outer shell No. 1; 2. Outer shell No. 2; 3. Upper rotating arm; 4. Lower rotating arm; 5. Drive wheel; 6. Tensioning wheel; 7. Driven wheel; 8. Groove; 9. Fixed ear; 10. Cylinder No. 2; 11. Center hole; 12. Fixed plate; 13. Sliding frame; 14. Sliding sleeve; 15. Guide shaft; 16. Rotating ear; 17. Rotating plate; 18. Center ear; 19. Rotating frame; 20. Centering roller; 21. Transmission belt; 22. Upper conveyor wheel; 23. Lower conveyor wheel; 24. Handle; 25. Hydraulic push cylinder; 26. Upper rotating component; 27. Lower rotating component. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-8 In this embodiment of the utility model, a steel pipe flaw detection three-roller centering clamping and conveying device includes a first outer shell 1, a second outer shell 2 installed at one end of the first outer shell 1, a second cylinder 10 installed both inside the first outer shell 1, the second cylinder 10 being connected to the centering mechanism, a fixing ear 9 installed at the upper and lower positions of the front end of the first outer shell 1, the fixing ear 9 being fixedly connected to the piston rod end of the second cylinder 10, and a central hole 11 for the pipe to pass through is opened at the center of the front and rear plates of the first outer shell 1 and the second outer shell 2. Upper rotating arms 3 are rotatably mounted on the upper ends of the second outer shell 2, and lower rotating arms 4 are rotatably mounted on the lower ends of the second outer shell 2. The upper rotating arms 3 and lower rotating arms 4 are symmetrically distributed about the transverse central axis of the second outer shell 2. A rotating mechanism is installed on one of the horizontal bars of the upper rotating arm 3, and a conveying mechanism is installed on the vertical bars of the upper rotating arm 3 and the lower rotating arm 4. A clamping mechanism is installed on the inner side of the vertical bars of the upper rotating arm 3 and the lower rotating arm 4.

[0015] In this embodiment: After the steel pipe being tested passes through the central hole 11, the centering mechanism is activated, and the centering mechanism rotates synchronously inward. The synchronously rotating centering mechanism clamps the outer surface of the steel pipe, completing the centering and clamping of the steel pipe. After the steel pipe is clamped by the centering mechanism, the clamping mechanism is activated, and the clamping mechanism pulls the upper rotating arm 3 and the lower rotating arm 4 to rotate in opposite directions. The upper rotating arm 3 and the lower rotating arm 4 rotating in opposite directions drive the two parts of the conveying mechanism to clamp the upper and lower positions of the outer wall of the steel pipe. After the steel pipe is clamped, the rotating device (such as a motor) connected to the rotating mechanism is activated, and the rotating mechanism drives the conveying mechanism to rotate, thereby driving the clamped steel pipe to move. This achieves the purpose of driving the steel pipe to move after centering and clamping, and limits the end of the steel pipe to avoid bending problems caused by the weight of the long steel pipe.

[0016] Please refer to this carefully. Figure 6 , Figure 7 and Figure 8 The rotating mechanism includes a drive wheel 5 coaxially arranged with the rotation point of the upper rotating arm 3. The drive wheel 5 is rotatably connected to the upper rotating arm 3. A tension wheel 6 is rotatably mounted on the crossbar of the upper rotating arm 3. The drive wheel 5 and the tension wheel 6 are connected to the driven wheel 7 via a transmission belt 21. The conveying mechanism includes an upper conveying wheel 22 coaxially connected to the driven wheel 7. A support sleeve is rotatably mounted on the outer wall of the synchronous shaft connected to the driven wheel 7 and the upper conveying wheel 22. The support sleeve is fixedly connected to the bottom end of the longitudinal rod of the upper rotating arm 3. The conveying mechanism also includes another support sleeve fixedly connected to the top end of the longitudinal rod of the lower rotating arm 4. The inner wall of the support sleeve is rotatably connected to the rotating shaft of the lower conveying wheel 23 through a bearing. The lower conveying wheel 23 and the upper conveying wheel 22 are symmetrically distributed vertically. A crank handle 24 is fixedly mounted on one end of the rotating shaft of the lower conveying wheel 23.

[0017] In this embodiment: after the steel pipe is clamped by the centering mechanism, the rotating device connected to the driving wheel 5 is started. The driving wheel 5 drives the driven wheel 7 to rotate through the transmission belt 21 and the tension wheel 6. The rotation of the driven wheel 7 drives the upper conveyor wheel 22 to rotate through the synchronous shaft. The rotating upper conveyor wheel 22 drives the steel pipe to move. At this time, the lower conveyor wheel 23 rotates under friction, thus completing the conveying of the steel pipe. To determine whether the upper conveyor wheel 22 and the lower conveyor wheel 23 are clamping the steel pipe, you can crank the handle 24. The handle 24 will drive the lower conveyor wheel 23 to rotate. Observe whether the steel pipe moves. If it can move, it means that the steel pipe has been effectively clamped.

[0018] Please refer to this carefully. Figure 6 , Figure 7 and Figure 8The clamping mechanism includes an upper rotating member 26 fixedly connected to the inner side of the longitudinal rod of the upper rotating arm 3, and a lower rotating member 27 fixedly connected to the inner side of the longitudinal rod of the lower rotating arm 4. The top of the piston rod of the hydraulic push cylinder 25 and the bottom of the outer shell are respectively rotatably connected to the upper rotating member 26 and the lower rotating member 27.

[0019] In this embodiment: when the upper rotating arm 3 and the lower rotating arm 4 are driven to rotate in opposite directions, the hydraulic push cylinder 25 is activated, the piston rod of the hydraulic push cylinder 25 retracts, and its overall length becomes shorter. Since the upper and lower ends of the hydraulic push cylinder 25 are rotatably connected to the upper rotating arm 3 and the lower rotating arm 4 through the upper rotating component 26 and the lower rotating component 27 respectively, the hydraulic push cylinder 25 synchronously pulls the upper rotating arm 3 and the lower rotating arm 4 to rotate in opposite directions; when the hydraulic push cylinder 25 extends, it drives the upper rotating arm 3 and the lower rotating arm 4 to rotate in opposite directions.

[0020] Please refer to this carefully. Figure 3 , Figure 4 , Figure 5 and Figure 6 The centering mechanism includes a fixing plate 12 fixedly installed on the sleeve of cylinder 10 and the outer side of housing 1 by fasteners. A sliding frame 13 is fixedly installed between the fixing plates 12. A sliding sleeve 14 is fixedly installed between the two sliding frames 13. A hollow cylinder aligned with the center hole 11 is integrally formed at the center of the sliding frame 13. A guide shaft 15 is fixedly installed between the front and rear end plates of housing 1. The guide shaft 15 is inserted into the inner wall of the sliding sleeve 14. One end of the sliding sleeve 14 extends through to the outside of the front sliding frame 13. An outwardly protruding rotating lug 16 is welded to the outer periphery of the sliding sleeve 14 at the front sliding frame 13.

[0021] In this embodiment: when centering and clamping the steel pipe, the second cylinder 10 is activated and shortened. Since the piston rod of the second cylinder 10 is fixed, the thrust generated by the shortened second cylinder 10 causes the sleeve shell of the second cylinder 10 to move towards the fixed lug 9, thereby driving the sliding frame 13 to move through the fixed plate 12. The sliding frame 13 then drives the sliding sleeve 14 to slide along the outer wall of the guide shaft 15.

[0022] Please refer to this carefully. Figure 5 The centering mechanism also includes a rotating plate 17 rotatably mounted on the outside of the rotating ear 16. The rotating plate 17 extends through to the outside of the first outer shell 1. The first outer shell 1 has a slot 8 for the rotating plate 17 to pass through. A rotating frame 19 is rotatably mounted on the end of the rotating plate 17 away from the rotating ear 16. A centering roller 20 is rotatably mounted on the output end of the rotating frame 19. The inner side of the middle position of the rotating frame 19 is rotatably connected to the center ear 18. The center ear 18 is fixedly mounted on the front end of the first outer shell 1. The three centering rollers 20 are equidistantly distributed in the circumferential direction with the center hole 11 as the center.

[0023] In this embodiment: when the sliding sleeve 14 moves, the moving sliding sleeve 14 pushes the rotating plate 17 to move synchronously through the rotating ear 16. At this time, the other end of the rotating plate 17 pushes the rotating frame 19. The rotating frame 19 rotates upward with the rotating connection point with the center ear 18 as the center. At this time, the rotating frame 19 can push the centering roller 20 close to the surface of the steel pipe until the steel pipe is clamped, realizing the positioning and clamping function.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steel pipe flaw detection three-roller centering pre-clamping conveyor device, comprising a first outer shell (1), wherein a second outer shell (2) is installed at one end of the first outer shell (1), characterized in that, The No. 1 outer shell (1) is equipped with a No. 2 cylinder (10) at both the top and bottom. The No. 2 cylinder (10) is connected to the centering mechanism. The No. 1 outer shell (1) is equipped with a fixing ear (9) at both the top and bottom of the front end. The fixing ear (9) is fixedly connected to the piston rod end of the No. 2 cylinder (10). The front end plate and the rear end plate of the No. 1 outer shell (1) and the No. 2 outer shell (2) are provided with a central hole (11) for the pipe to pass through. Upper rotating arms (3) are rotatably mounted on the upper ends of the second outer shell (2), and lower rotating arms (4) are rotatably mounted on the lower ends of the second outer shell (2). The upper rotating arms (3) and the lower rotating arms (4) are symmetrically distributed about the transverse central axis of the second outer shell (2). A rotating mechanism is installed on one horizontal bar of the upper rotating arm (3), and a conveying mechanism is installed on the vertical bar of the upper rotating arm (3) and the lower rotating arm (4). A clamping mechanism is installed on the inner side of the vertical bar of the upper rotating arm (3) and the lower rotating arm (4).

2. The steel pipe flaw detection three-roller centering pre-clamping conveyor device according to claim 1, characterized in that, The rotating mechanism includes a drive wheel (5) coaxially arranged with the rotation point of the upper rotating arm (3). The drive wheel (5) is rotatably connected to the upper rotating arm (3). A tension wheel (6) is rotatably mounted on the crossbar of the upper rotating arm (3). The drive wheel (5) and the tension wheel (6) are connected to a driven wheel (7) via a transmission belt (21). The conveying mechanism includes an upper conveying wheel (22) coaxially connected to the driven wheel (7). A support sleeve is rotatably installed on the outer wall of the synchronous shaft connected to the driven wheel (7) and the upper conveying wheel (22). The support sleeve is fixedly connected to the bottom end of the longitudinal rod of the upper rotating arm (3). The conveying mechanism also includes another support sleeve that is fixedly connected to the top of the longitudinal rod of the lower rotating arm (4). The inner wall of the support sleeve is rotatably connected to the rotating shaft of the lower conveying wheel (23) through a bearing. The lower conveying wheel (23) and the upper conveying wheel (22) are symmetrically distributed vertically. A crank handle (24) is fixedly installed at one end of the rotating shaft of the lower conveying wheel (23).

3. The steel pipe flaw detection three-roller centering pre-clamping conveyor device according to claim 2, characterized in that, The clamping mechanism includes an upper rotating member (26) fixedly connected to the inner side of the longitudinal rod of the upper rotating arm (3), and a lower rotating member (27) fixedly connected to the inner side of the longitudinal rod of the lower rotating arm (4). The top of the piston rod of the hydraulic push cylinder (25) and the bottom of the outer shell are respectively rotatably connected to the upper rotating member (26) and the lower rotating member (27).

4. The steel pipe flaw detection three-roller centering pre-clamping conveyor device according to claim 1, characterized in that, The centering mechanism includes a fixing plate (12) fixedly installed on the outer side of the first outer shell of the sleeve of the second cylinder (10) by a fixing member. A sliding frame (13) is fixedly installed between the fixing plates (12), and a sliding sleeve (14) is fixedly installed between the two sliding frames (13). A hollow cylinder aligned with the center hole (11) is integrally formed at the center of the sliding frame (13).

5. The steel pipe flaw detection three-roller centering pre-clamping conveyor device according to claim 4, characterized in that, A guide shaft (15) is fixedly installed between the front and rear end plates of the first outer shell (1). The guide shaft (15) is inserted into the inner wall of the sliding sleeve (14). One end of the sliding sleeve (14) extends through to the outside of the front sliding frame (13). The outer periphery of the sliding sleeve (14) is located on the front sliding frame (13) with an outwardly protruding rotating ear (16).

6. The steel pipe flaw detection three-roller centering pre-clamping conveyor device according to claim 5, characterized in that, The centering mechanism also includes a rotating plate (17) rotatably mounted on the outside of the rotating ear (16). The rotating plate (17) extends through to the outside of the first outer shell (1). The first outer shell (1) has a slot (8) for the rotating plate (17) to pass through. A rotating frame (19) is rotatably mounted on one end of the rotating plate (17) away from the rotating ear (16). A centering roller (20) is rotatably mounted on the output end of the rotating frame (19). The inner side of the middle position of the rotating frame (19) is rotatably connected to the center ear (18). The center ear (18) is fixedly mounted on the front end of the first outer shell (1). The three centering rollers (20) are equidistantly distributed in the circumferential direction with the center hole (11) as the center.

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