Heavy steel pipe joint closing device

Abstract

The utility model discloses a heavy steel pipe joint closing device, which relates to the technical field of heavy steel pipe processing equipment and comprises a base and a body arranged on the base, a joint closing hole is formed in the center of the body in a penetrating manner, a pressing oil cylinder is arranged above the joint closing hole, and a left pressing arm and a right pressing arm are respectively arranged on two sides of the joint closing hole of the body. A first oil cylinder is hinged to the upper end of the left pressing arm, a second oil cylinder is hinged to the upper end of the right pressing arm, a plurality of first hinge holes are formed in the side, located on the left pressing arm, of the body, a plurality of second hinge holes are formed in the side, located on the right pressing arm, of the body, and a plurality of third hinge holes are formed in the other end, close to the left pressing arm, of the body. According to the multi-pipe-diameter joint closing device, joint closing of various pipe diameters on the same equipment on the premise that an oil cylinder is not replaced is achieved, the joint closing procedure is simplified, the labor intensity is reduced, meanwhile, equipment of various types does not need to be configured, and the production cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy steel pipe processing equipment, in particular to a heavy steel pipe seaming device. Background Art

[0002] At present, most of the large-diameter heavy-duty steel pipes are manufactured by single steel plates. During the production, the steel plate is first cut according to the circumference and length of the steel pipe, and then rolled on a plate rolling machine. After forming a cylinder, it needs to be spot welded to fix it. Before spot welding, since there is a center seam left when the steel pipe is rolled, the gap of the steel pipe needs to be closed.

[0003] The existing technical means is to use a seaming machine to seam the steel pipe, which is mostly done by extending a pressing roller from the pressing mechanism to press the steel pipe from the top, left and right directions. When seaming steel pipes of different diameters, it is achieved by adjusting the length of the guide column extended by the oil cylinder. The shortcomings are: when adjusting different pipe diameters, one way is to replace the oil cylinders with different extension amounts on the same equipment, but this method is relatively cumbersome and labor-intensive to replace the oil cylinder;

[0004] Another way is to set up multiple devices that can adjust different pipe diameters, and then use different devices to adjust according to different pipe diameters, but this method greatly increases the production cost of the enterprise.

[0005] Therefore, there is an urgent need for a heavy-duty steel pipe jointing device, which can be used on the same equipment to achieve jointing of various pipe diameters without replacing the oil cylinder and reduce production costs. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a heavy-duty steel pipe jointing device, which is used to solve the problem that when adjusting different pipe diameters, it is necessary to replace cylinders with different extension amounts on the same equipment, resulting in a cumbersome and labor-intensive replacement process and the need to set up multiple devices that can adjust different pipe diameters, which greatly increases the production cost of the enterprise.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A heavy steel pipe joint device comprises a base and a body arranged on the base, a joint hole is formed through the center of the body, a pressure head is arranged on the body above the joint hole, a downward pressure oil cylinder is connected to the pressure head, a left pressure arm and a right pressure arm are respectively arranged on the left and right sides of the joint hole of the body, a first oil cylinder is hinged on the upper end of the left pressure arm, a second oil cylinder is hinged on the upper end of the right pressure arm, a plurality of first hinge holes are formed in parallel and transversely on one side of the body located at the left pressure arm, a first hinge shaft is arranged at one end of the first oil cylinder close to the first hinge hole, and the first oil cylinder is hinged to the first hinge hole through the first hinge shaft;

[0009] The body is provided with a plurality of second hinge holes arranged in parallel and transversely on one side of the right pressure arm, and a second hinge shaft is provided at one end of the second oil cylinder close to the second hinge hole, and the second oil cylinder is hinged to the second hinge hole through the second hinge shaft;

[0010] A plurality of third hinge holes are provided at the other end of the body close to the left pressure arm, and a third hinge shaft is provided at the other end of the left pressure arm, and the third hinge shaft is hinged to the third hinge hole;

[0011] A plurality of fourth hinge holes are provided at the other end of the body close to the right pressure arm, and a fourth hinge shaft is provided at the other end of the right pressure arm, and the fourth hinge shaft is hinged to the fourth hinge hole.

[0012] Furthermore, the body comprises a first panel and a second panel arranged in parallel, a connecting plate is provided between the first panel and the second panel, and the first hinge hole, the second hinge hole, the third hinge hole, and the fourth hinge hole pass through the first panel and the second panel;

[0013] The lengths of the first hinge axis, the second hinge axis, the third hinge axis and the fourth hinge axis are equal to the width of the connecting plate.

[0014] Furthermore, a first reinforcing plate is provided on the inner walls of the first and second panels at the position of the first hinge hole, and a second reinforcing plate is provided on the inner walls of the first and second panels at the position of the second hinge hole.

[0015] Furthermore, the first reinforcement plate is provided with a first U-shaped mounting opening of equal cross-section at a position corresponding to the first hinge hole, and the second reinforcement plate is provided with a second U-shaped mounting opening of equal cross-section at a position corresponding to the second hinge hole. Both the first U-shaped mounting opening and the second U-shaped mounting opening are opened upward and are arranged obliquely symmetrically.

[0016] Furthermore, a third reinforcing plate is provided on the inner walls of the first and second panels at the position of the third hinge hole, and a fourth reinforcing plate is provided on the inner walls of the first and second panels at the position of the fourth hinge hole.

[0017] Furthermore, a third U-shaped installation opening is provided at a position of the third reinforcement plate corresponding to the third hinge hole, and a fourth U-shaped installation opening is provided at a position of the fourth reinforcement plate corresponding to the fourth hinge hole.

[0018] Furthermore, the first hinge hole, the second hinge hole, the third hinge hole, and the fourth hinge hole are all long holes, and are arranged in a direction that forms an angle of 45 degrees with the base.

[0019] Furthermore, the connection plate is provided with lifting openings at the positions of the first oil cylinder, the second oil cylinder and the downward pressure oil cylinder.

[0020] In summary, the beneficial technical effects of the utility model are:

[0021] (1) When seaming steel pipes with different diameters, the first cylinder and the second cylinder are placed in the first hinge hole and the second hinge hole at different positions through the first hinge shaft and the second hinge shaft, which not only compensates for the stroke problem of the original cylinder, but also eliminates the need to frequently replace cylinders with different extension amounts, simplifies the seaming process and reduces labor intensity. At the same time, it also realizes effective clamping and fixing of the steel pipe, ensures the supporting strength of the first cylinder and the second cylinder, and also solves the problem of high production costs for enterprises due to configuring multiple types of equipment according to different pipe diameters, thereby achieving the purpose of one machine with multiple functions.

[0022] (2) By utilizing the first U-shaped mounting opening and the second U-shaped mounting opening that are open upward, it is not necessary to remove the first hinge shaft and the second hinge shaft when adjusting the position of the first oil cylinder and the second oil cylinder. Instead, the first oil cylinder and the second oil cylinder only need to be lifted and then pushed forward along the extension path of the first U-shaped mounting opening and the second U-shaped mounting opening to achieve position adjustment. Therefore, the first U-shaped mounting opening and the second U-shaped mounting opening can provide reverse support force in the action direction of the first oil cylinder and the second oil cylinder while achieving position adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the utility model from another angle;

[0025] Figure 3 yes Figure 1 The schematic diagram of the first panel is hidden;

[0026] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0027] Figure 5 It is a use schematic diagram of the utility model.

[0028] Figure numerals: 1. base; 2. first panel; 3. second panel; 4. connecting plate; 5. joint hole; 6. downward pressure cylinder; 7. pressure head; 8. left pressure arm; 9. right pressure arm; 10. first hinge hole; 11. second hinge hole; 12. third hinge hole; 13. fourth hinge hole; 14. first cylinder; 15. second cylinder; 16. first hinge axis; 17. second hinge axis; 18. third hinge axis; 19. fourth hinge axis; 20. first reinforcement plate; 21. second reinforcement plate; 22. third reinforcement plate; 23. fourth reinforcement plate; 24. first U-shaped mounting port; 25. second U-shaped mounting port; 26. third U-shaped mounting port; 27. fourth U-shaped mounting port; 28. lifting port; 29. ​​steel pipe. DETAILED DESCRIPTION

[0029] The present invention will be described clearly and completely below in conjunction with the embodiments.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] See attached Figure 1-4, shown is a heavy-duty steel pipe jointing device, comprising a base 1 and a body arranged on the base 1, wherein the body comprises a first panel 2 and a second panel 3 arranged in parallel, and a connecting plate 4 is arranged between the inner walls of the first panel 2 and the second panel 3, a polygonal joint hole 5 is opened at the center of the first panel 2 and the second panel 3, and a rolled steel pipe 29 is placed in the joint hole 5 for jointing operation during jointing, the body is located between the first panel 2 and the second panel 3 and a downward pressure cylinder 6 is arranged directly above the joint hole 5, and a pressure head is arranged at the extended end of the downward pressure cylinder 6 7. When the seams are closed, the pressure head 7 is driven downward by the downward pressure cylinder 6 and acts on the top of the steel pipe 29 to achieve compression and clamping. The first panel 2 and the second panel 3 are located on the left and right sides of the seam hole 5, respectively, and the first hinge hole 10 and the second hinge hole 11 are opened. The first hinge hole 10 and the second hinge hole 11 are provided with a plurality of holes, and are arranged side by side in a horizontal direction. The first hinge hole 10 and the second hinge hole 11 are long holes, and are symmetrically arranged close to each other with the center of the seam hole 5. At the same time, the first hinge hole 10 and the second hinge hole 11 are at an angle of 45 degrees with the base 1;

[0033] The first and second panels 2 and 3 are provided with a first reinforcing plate 20 and a second reinforcing plate 21 having the same structure on their inner walls and at the positions of the first hinge hole 10 and the second hinge hole 11, respectively. A first U-shaped mounting opening 24 having the same number and cross-section is provided at the position of the first reinforcing plate 20 corresponding to the first hinge hole 10. The first U-shaped mounting opening 24 is tilted upward. The first and second panels 2 and 3 are hinged with a first hinge shaft 16 in the first U-shaped mounting opening 24. The two ends of the first hinge shaft 16 are flush with the outer walls of the two first reinforcing plates 20, and the length is equal to the width of the connecting plate 4. The first hinge shaft 16 is provided with a first oil cylinder 14 between the first and second panels 2 and 3. The protruding end of the first oil cylinder 14 is hinged with a left pressure arm 8. It can be seen that a plurality of second U-shaped mounting openings 25 having the same number and cross-section as the second hinge hole 11 are also provided on the second reinforcing plate 21. A second hinge shaft 17 is hinged in the second U-shaped mounting opening 25, and a right pressure arm 9 is hinged at one end of the second hinge shaft 17.

[0034] At the same time, the first panel 2 and the second panel 3 are respectively provided with a third hinge hole 12 and a fourth hinge hole 13 below the first hinge hole 10 and the second hinge hole 11, and at the same time, the inner walls of the first panel 2 and the second panel 3 and located at the positions of the third hinge hole 12 and the fourth hinge hole 13 are respectively provided with a third reinforcing plate 22 and a fourth reinforcing plate 23 with the same structure, wherein the third reinforcing plate 22 and the fourth reinforcing plate 23 are also respectively provided with a third U-shaped mounting opening 26 and a fourth U-shaped mounting opening 27, wherein the structures of the first U-shaped mounting opening 24, the second U-shaped mounting opening 25, the third U-shaped mounting opening 26, and the fourth U-shaped mounting opening 27 are all the same, and at the same time, a third hinge shaft 18 is hinged in the third U-shaped mounting opening 26, and the other end of the left pressure arm 8 is hinged to the third U-shaped mounting opening 26 through the third hinge shaft 18, and a fourth hinge shaft 19 is hinged in the fourth U-shaped mounting opening 27, and the other end of the right pressure arm 9 is hinged to the fourth U-shaped mounting opening 27 through the fourth hinge shaft 19;

[0035] It can be seen that when the steel pipes 29 of different diameters are joined, an upward lifting force is applied to the first cylinder 14 and the second cylinder 15 through the lifting equipment, and then the staff can place the first hinge shaft 16 and the second hinge shaft 17 in the first U-shaped installation opening 24 and the second U-shaped installation opening 25 at different positions by moving forward and backward. At this time, the first U-shaped installation opening 24 and the second U-shaped installation opening 25 can not only support and articulate the first cylinder 14 and the second cylinder 15 to prevent them from falling, but also make it unnecessary to completely remove the first hinge shaft 16 and the second hinge shaft 17 from the first hinge hole 10 and the second hinge hole 11 when moving the position through the structure arranged upwardly inclined, so as to realize a detachable quick connection, which not only compensates for the stroke of the first cylinder 14 and the second cylinder 15, but also avoids frequent replacement of cylinders when joining the steel pipes 29 of different diameters, and does not need to configure multiple types of equipment, thereby greatly reducing the production cost of the enterprise;

[0036] Similarly, when changing the positions of the other ends of the left pressure arm 8 and the right pressure arm 9, it is only necessary to lift the left pressure arm 8 and the right pressure arm 9 and move them forward and backward at the same time so that the third hinge shaft 18 and the fourth hinge shaft 19 are placed in the third U-shaped installation opening 26 and the fourth U-shaped installation opening 27 at different positions;

[0037] Furthermore, in order to facilitate the lifting of the pressing cylinder 6 , the first cylinder 14 and the second cylinder 15 , lifting openings 28 are provided at corresponding positions of the connecting plate 4 .

[0038] It should be noted that, in order to ensure the quality of spot welding and put the welder at the most favorable welding angle when joining the seams, the spot welding position is set at a flat welding angle. At this time, the clamping of the steel pipe 29 mainly comes from the action of the left pressure arm 8 and the right pressure arm 9. If the clamping is only achieved by relying on the guide rods on the first oil cylinder 14 and the second oil cylinder 15, the greater the extension of the guide rod, the smaller the support strength of the guide rod. Therefore, the utility model changes the position of the first oil cylinder 14 and the second oil cylinder 15 to ensure that the left and right clamping of the steel pipe 29 is achieved under the same extension amount to ensure the support strength, and the downward pressure cylinder 6 plays an auxiliary role. Therefore, the downward pressure cylinder 6 can be set to a large-stroke cylinder. At the same time, in order to ensure the stability of the downward pressure cylinder 6 during action, the downward pressure cylinder 6 is fixed between the first panel 2 and the second panel 3.

[0039] Please refer to the attached Figure 5 First, the spacing between the left pressure arm 8 and the right pressure arm 9 is adjusted according to the diameter of the steel pipe 29 to be seamed. During the adjustment, the hoisting equipment applies an upward lifting force to the first oil cylinder 14 and the second oil cylinder 15 through the hoisting holes on the connecting plate 4, and then the staff moves the first hinge shaft 16 and the second hinge shaft 17 forward and backward to hinge them into the first hinge hole 10 and the second hinge hole 11 at the corresponding position, and then uses the same method to move the third hinge shaft 18 and the fourth hinge shaft 19 to the corresponding third hinge hole 12 and the fourth hinge hole 13, and then the rolled steel pipe 29 is placed in the seam hole 5, and the spot welding position is at the angle of flat welding, and then the left pressure arm 8 and the right pressure arm 9 are controlled by the first oil cylinder 14 and the second oil cylinder 15 to make circular arc movements in opposite directions to achieve the clamping and seaming of the steel pipe 29, and at the same time, the downward pressure cylinder 6 drives the pressure head 7 to act on the top of the steel pipe 29 for vertical limit.

[0040] The above description is only a preferred specific implementation method of the present utility model, and does not limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A heavy steel pipe joint device, comprising a base (1) and a body arranged on the base (1), a joint hole (5) being provided through the center of the body, a pressure head (7) being provided on the body above the joint hole (5), a downward pressure cylinder (6) being connected to the pressure head (7), a left pressure arm (8) and a right pressure arm (9) being provided on the left and right sides of the joint hole (5), respectively, a first oil cylinder (14) being hinged on the upper end of the left pressure arm (8), and a second oil cylinder (15) being hinged on the upper end of the right pressure arm (9), characterized in that: The main body is provided with a plurality of first hinge holes (10) arranged in parallel and transversely on one side of the left pressure arm (8); a first hinge shaft (16) is provided at one end of the first oil cylinder (14) close to the first hinge hole (10); the first oil cylinder (14) is hinged to the first hinge hole (10) via the first hinge shaft (16); The body is provided with a plurality of second hinge holes (11) arranged in parallel and transversely on one side of the right pressure arm (9); a second hinge shaft (17) is provided at one end of the second oil cylinder (15) close to the second hinge hole (11); and the second oil cylinder (15) is hinged to the second hinge hole (11) via the second hinge shaft (17); A plurality of third hinge holes (12) are provided at the other end of the body close to the left pressure arm (8), and a third hinge shaft (18) is provided at the other end of the left pressure arm (8), and the third hinge shaft (18) is hinged to the third hinge hole (12); A plurality of fourth hinge holes (13) are provided at the other end of the body close to the right pressure arm (9), and a fourth hinge shaft (19) is provided at the other end of the right pressure arm (9), and the fourth hinge shaft (19) is hinged to the fourth hinge hole (13).

2. A heavy steel pipe jointing device according to claim 1, characterized in that: The body comprises a first panel (2) and a second panel (3) arranged in parallel, a connecting plate (4) is arranged between the first panel (2) and the second panel (3), and the first hinge hole (10), the second hinge hole (11), the third hinge hole (12) and the fourth hinge hole (13) pass through the first panel (2) and the second panel (3); The lengths of the first hinge axis (16), the second hinge axis (17), the third hinge axis (18) and the fourth hinge axis (19) are equal to the width of the connecting plate (4).

3. A heavy steel pipe jointing device according to claim 2, characterized in that: A first reinforcing plate (20) is provided on the inner walls of the first panel (2) and the second panel (3) at the position of the first hinge hole (10), and a second reinforcing plate (21) is provided on the inner walls of the first panel (2) and the second panel (3) at the position of the second hinge hole (11).

4. A heavy steel pipe jointing device according to claim 3, characterized in that: The first reinforcing plate (20) is provided with a first U-shaped mounting opening (24) with a uniform cross-section at a position corresponding to the first hinge hole (10), and the second reinforcing plate (21) is provided with a second U-shaped mounting opening (25) with a uniform cross-section at a position corresponding to the second hinge hole (11), wherein both the first U-shaped mounting opening (24) and the second U-shaped mounting opening (25) are opened upwards and are arranged obliquely symmetrically.

5. A heavy steel pipe jointing device according to claim 3, characterized in that: A third reinforcing plate (22) is provided on the inner walls of the first panel (2) and the second panel (3) at the position of the third hinge hole (12), and a fourth reinforcing plate (23) is provided on the inner walls of the first panel (2) and the second panel (3) at the position of the fourth hinge hole (13).

6. A heavy steel pipe jointing device according to claim 5, characterized in that: The third reinforcing plate (22) is provided with a third U-shaped mounting opening (26) at a position corresponding to the third hinge hole (12), and the fourth reinforcing plate (23) is provided with a fourth U-shaped mounting opening (27) at a position corresponding to the fourth hinge hole (13).

7. A heavy steel pipe jointing device according to claim 1, characterized in that: The first hinge hole (10), the second hinge hole (11), the third hinge hole (12) and the fourth hinge hole (13) are all long holes, and are arranged in a direction that forms an angle of 45 degrees with the base (1).

8. A heavy steel pipe jointing device according to claim 2, characterized in that: The connection plate (4) is provided with lifting openings (28) at the positions of the first oil cylinder (14), the second oil cylinder (15) and the downward pressure oil cylinder (6).

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