A clamping device suitable for steel pipe welding

Abstract

This utility model relates to the field of welding technology, and more particularly to a clamping device suitable for welding steel pipes, comprising a vertical baffle, a base plate, an opening limiting plate, a clamping rod, a guide groove, a positioning block, an assembled connector, a fastener, a bearing component, a base plate, a radial clamping device, and a supporting cantilever. By screwing in the clamping rod and the radial clamping device, the steel pipes in the horizontal and vertical directions can be kept in position. This utility model can achieve the positioning welding of three steel pipes, improving the positioning accuracy and construction efficiency. By employing an adjustable clamping mechanism, it can adapt to the welding requirements of different pipe diameters.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a clamping device suitable for welding steel pipes. Background Technology

[0002] In the steel pipe welding process, reliable clamping and fixing are the key prerequisites for ensuring that the welded joint achieves the design accuracy, mechanical properties and structural consistency.

[0003] Currently, conventional welding clamping devices are mainly designed for clamping two steel pipes at the joint, using a symmetrical clamping structure to achieve the centering and positioning of the steel pipes. However, in engineering practice, especially in typical application scenarios such as the welding of tee fittings and the welding of nodes in spatial grid structures, it is often necessary to simultaneously position and weld three steel pipes. This requirement for simultaneous welding of three pipes not only demands that the clamps have stronger structural rigidity, but also needs to ensure that the three steel pipes are perpendicular to each other in space.

[0004] Therefore, developing a new type of welding fixture capable of simultaneously and stably clamping three steel pipes while ensuring that each pipe is perpendicular to the others has become a breakthrough direction for improving the welding quality and efficiency of complex structures. Therefore, to address the above problems, a clamping device suitable for steel pipe welding is proposed to solve these issues. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a clamping device suitable for steel pipe welding. This invention enables the positioning and welding of three steel pipes, improving welding positioning accuracy and construction efficiency. By employing an adjustable clamping mechanism, it can adapt to the welding needs of different pipe diameters.

[0006] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a clamping device suitable for steel pipe welding, including a vertical baffle, a base plate, an opening limiting plate, a clamping rod, a guide groove, a positioning block, an assembled connector, a fastener, a bearing, a base plate, a radial clamping device, and a support cantilever.

[0007] Preferably, the vertical baffle is fixedly installed perpendicular to the upper surface of the base plate, and the bottom edge of the vertical baffle is welded to the base plate to form a rigid structure.

[0008] Preferably, the upper surface of the base plate is fixedly provided with an opening limiting plate and a guide groove; the opening limiting plate has a limiting hole. The installation orientation of the opening limiting plate is perpendicular to the normal diagonal of the plane containing the upper surface of the base plate, and the installation direction of the guide groove is consistent with the diagonal direction of the plane containing the upper surface of the base plate.

[0009] Preferably, the inner wall of the limiting hole is provided with an internal thread; the periphery of the clamping rod is provided with an external thread; the diameter of the external thread of the clamping rod is adapted to the diameter of the internal thread of the limiting hole, and the clamping rod can rotate forward or backward along the axial direction of the limiting hole through thread engagement.

[0010] Preferably, the assembled connector has two through holes; the bottom of the assembled connector has a rotating receiving cavity; and the two side walls of the assembled connector have receiving slots.

[0011] Preferably, the upper part of the assembled lower component is provided with a rotating receiving cavity; the two side walls of the assembled lower component are provided with receiving slots; and two threaded holes are provided perpendicular to the upper surface of the assembled lower component.

[0012] Preferably, the assembled connector and the assembled lower component are fastened together by passing fastening screws sequentially through the through holes on the assembled connector and the threaded holes on the assembled lower component; the rotating receiving cavity of the assembled connector and the rotating receiving cavity of the assembled lower component together form the rotating pair installation space.

[0013] Preferably, one end of the clamping rod is provided with a cross handle, and the other end is provided with a stop round head and a round shaft groove; the diameter D1 of the stop round head and the inner diameter D2 of the rotating receiving cavity form a clearance fit, and satisfy the relationship: 2mm≤D2-D1≤4mm.

[0014] Preferably, the positioning block has a pin plate on the first inclined working surface and an arc-shaped groove on the second inclined working surface; wherein the first inclined working surface and the second inclined working surface intersect at a 45° angle.

[0015] Preferably, the external dimensions of the pin plate are adapted to the internal cavity dimensions of the socket, so that the pin plate can be inserted into the internal cavity of the socket.

[0016] Preferably, a U-shaped bearing seat is connected to the substrate; the two side walls of the U-shaped bearing seat are provided with coaxial mounting holes; one end of the support cantilever is connected to a rotating disk, and the other end is connected to a load-bearing component.

[0017] Preferably, the rotating disk can be placed inside the U-shaped bearing seat; the shaft pin passes through the mounting hole and the shaft hole on the rotating disk, forming a rotating pair connection. The end of the shaft pin is provided with a through hole, and the diameter of the clamp is adapted to the inner diameter of the through hole; when the clamp is placed in the through hole, it can prevent the shaft pin from moving in the axial direction.

[0018] Preferably, the radial clamp is provided with an external thread on its periphery; the bearing member is provided with a through screw hole, and the inner wall of the through screw hole is provided with an internal thread; the diameter of the external thread of the radial clamp is adapted to the diameter of the internal thread of the through screw hole, and the radial clamp can be rotated forward or backward along the axial direction of the through screw hole through thread engagement.

[0019] Preferably, four blind holes are provided on the inner side of the left side wall of the vertical baffle, and the inner wall of the blind holes is threaded; fixing holes are provided at the four corners of the substrate; fasteners pass through the fixing holes and are screwed into the blind holes, so that the back side of the substrate and the left side wall of the vertical baffle form a surface contact and fixation.

[0020] Preferably, two through screw holes are provided perpendicular to the upper surface of the fastener; a bearing cavity is provided at the lower part of the fastener; two short screw holes are provided on the upper surface of the lower fastener assembly; a bearing cavity is provided at the upper part of the lower fastener assembly; screws pass through the screw holes and short screw holes in sequence, so that the fastener and the lower fastener assembly form an axial compression fit; the bearing cavity of the fastener and the bearing cavity of the lower fastener assembly together constitute a cylindrical mounting space for accommodating the double-disc shaft head.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] 1) Through the optimized clamping structure design, this utility model can simultaneously achieve precise positioning and stable fixation of three steel pipes, effectively solve the problem of alignment deviation during welding of three steel pipes, significantly improve the accuracy of welding position, and reduce manual adjustment time, thereby greatly improving construction efficiency.

[0023] 2) This utility model adopts an adjustable clamping mechanism. By adjusting the clamping distance, it can be compatible with the welding requirements of steel pipes of different diameters, which enhances the versatility of the device, reduces the equipment investment cost, and is suitable for diverse welding operation scenarios. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram showing the installation orientation of the perforated limiting plate of this utility model;

[0027] Figure 3 This is a schematic diagram of the perforated limiting plate of this utility model;

[0028] Figure 4 This is an assembly diagram of the clamping rod, the assembled connector, and the assembled lower component of the present invention.

[0029] Figure 5 This is a partial enlarged view of the clamping rod of this utility model;

[0030] Figure 6 This is a schematic diagram of the positioning block of this utility model;

[0031] Figure 7 This is a rear view of the assembled connector and the assembled lower component of the present invention combined together.

[0032] Figure 8 This is an assembly diagram of the U-shaped bearing seat and supporting cantilever of this utility model;

[0033] Figure 9 This is a partially enlarged view of the connection between the vertical baffle and the substrate of this utility model;

[0034] Figure 10 This is a schematic diagram of the assembly of the fastener and radial clamp of this utility model;

[0035] Figure 11 This is a diagram showing the usage state of this utility model.

[0036] In the diagram, 1. Vertical baffle; 2. Base plate; 3. Opening limiting plate; 301. Limiting hole; 4. Clamping rod; 401. Cross handle; 402. Stopping round head; 403. Round shaft groove; 5. Guide groove; 501. Positioning groove; 6. Positioning block; 601. First inclined working surface; 6011. Pin plate; 602. Second inclined working surface; 6021. Arc-shaped groove; 7. Assembled connector; 701. Through hole; 702. Threaded hole; 703. Socket; 704. Assembled lower connector component; 705. Rotary receiving cavity; 706. 8. Fastening screw; 801. Screw; 802. Screw hole; 803. Lower component of fastening device; 804. Bearing cavity; 805. Short screw hole; 9. Bearing component; 901. Through screw hole; 10. Base plate; 101. Fixing hole; 102. U-shaped bearing seat; 103. Mounting hole; 11. Radial clamp; 111. Double disc shaft head; 12. Support cantilever; 121. Rotating disc; 122. Shaft hole; 13. Shaft pin; 131. Through hole; 14. Clamping device; 15. Connecting blind hole; 16. Steel pipe; 17. Fastener. Detailed Implementation

[0037] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides embodiments for implementing different structures of the present invention. To simplify the disclosure of the present invention, specific examples of components and arrangements are described below. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] like Figure 1 As shown, a clamping device suitable for steel pipe welding includes a vertical baffle 1, a base plate 2, an opening limiting plate 3, a clamping rod 4, a guide groove 5, a positioning block 6, an assembled connector 7, a fastener 8, a bearing 9, a base plate 10, a radial clamping device 11, and a support cantilever 12.

[0039] In this embodiment, the vertical baffle 1 is fixedly installed perpendicular to the upper surface of the base plate 2, and the bottom edge of the vertical baffle 1 and the base plate 2 are welded together to form a rigid structure.

[0040] like Figure 2 As shown, the upper surface of the base plate 2 is fixedly provided with an opening limiting plate 3 and a guide groove 5; the installation orientation of the opening limiting plate 3 is perpendicular to the normal diagonal of the plane on which the upper surface of the base plate 2 is located, and the installation direction of the guide groove 5 is consistent with the diagonal direction of the plane on which the upper surface of the base plate 2 is located.

[0041] like Figure 3 As shown, the opening limiting plate 3 has a limiting hole 301. The inner wall of the limiting hole 301 is provided with an internal thread.

[0042] In this embodiment, the clamping rod 4 is provided with an external thread on its periphery; the diameter of the external thread of the clamping rod 4 is adapted to the diameter of the internal thread of the limiting hole 301, and the clamping rod 4 can be rotated in or out along the axial direction of the limiting hole 301 through thread engagement; the guide groove 5 is provided with a positioning groove 501, and after the clamping rod 4 passes through the limiting hole 301, the rod body is supported in the positioning groove 501.

[0043] like Figure 4 As shown, the assembled connector 7 has two through holes 701; the bottom of the assembled connector 7 has a rotating receiving cavity 705; and the two side walls of the assembled connector have receiving slots 703.

[0044] In this embodiment, a rotating receiving cavity 705 is provided on the upper part of the assembled lower connecting component 704; receiving slots 703 are provided on both side walls of the assembled lower connecting component 704; and two threaded holes 702 are provided perpendicular to the upper surface of the assembled lower connecting component 704.

[0045] In this embodiment, fastening screws 706 pass sequentially through the through holes 701 on the assembled connector 7 and the threaded holes 702 on the assembled lower connecting member 704, thereby fastening the assembled connector 7 and the assembled lower connecting member 704 together; the rotating receiving cavity 705 of the assembled connector 7 and the rotating receiving cavity 705 of the assembled lower connecting member 704 together form a cylindrical mounting space for accommodating the stop round head 402, and the clamping rod 4 can rotate relative to the assembled connector 7 and the assembled lower connecting member 704.

[0046] like Figure 1 , Figure 5 As shown, one end of the clamping rod 4 is provided with a cross handle 401, and the other end is provided with a stop round head 402 and a round shaft groove 403; the diameter D1 of the stop round head 402 and the inner diameter D2 of the rotating receiving cavity 705 form a clearance fit, and satisfy the relationship: 2mm≤D2-D1≤4mm.

[0047] like Figure 6 As shown, a pin plate 6011 is provided on the first inclined working surface 601 of the positioning block, and an arc-shaped groove 6021 is provided on the second inclined working surface 602; wherein, the first inclined working surface 601 and the second inclined working surface 602 intersect at a 45° angle.

[0048] like Figure 6 , Figure 7 As shown, the external dimensions of the pin plate 6011 are adapted to the internal cavity dimensions of the socket 703, so that the pin plate 6011 can be inserted into the internal cavity of the socket 703 to form a clamping structure.

[0049] like Figure 8As shown, a U-shaped bearing seat 102 is connected to the base plate 10; coaxial mounting holes 103 are provided on both sides of the U-shaped bearing seat 102; one end of the support cantilever 12 is connected to the rotating disk 121, and the other end is connected to the carrier 9.

[0050] In this embodiment, the rotating disk 121 can be placed inside the U-shaped bearing seat 102; the shaft pin 13 passes through the mounting hole 103 and the shaft hole 122 on the rotating disk 121, forming a rotating pair connection. The end of the shaft pin 13 is provided with a through hole 131, and the diameter of the clamping piece 14 is adapted to the inner diameter of the through hole 131; when the clamping piece 14 is placed in the through hole 131, it can prevent the shaft pin 13 from moving in the axial direction.

[0051] In this embodiment, the radial clamping device 11 has an external thread on its periphery; the bearing member 9 has a through screw hole 901, and the inner wall of the through screw hole 901 has an internal thread; the diameter of the external thread of the radial clamping device 11 is adapted to the diameter of the internal thread of the through screw hole 901; the radial clamping device 11 can rotate forward or backward along the axial direction of the through screw hole 901 through thread engagement.

[0052] like Figure 9 As shown, four blind holes 15 are provided on the inner side of the left side wall of the vertical baffle 1, and the inner wall of the blind holes 15 is threaded; fixing holes 101 are provided at the four corners of the substrate 10; fasteners 17 pass through the fixing holes 101 and are screwed into the blind holes 15, so that the back side of the substrate 10 forms a surface contact with the left side wall of the vertical baffle 1 and is fixed.

[0053] like Figure 10 As shown, two through screw holes 802 are provided perpendicular to the upper surface of the fastener 8; a bearing cavity 804 is provided at the lower part of the fastener 8; two short screw holes 805 are provided on the upper surface of the lower fastener assembly 803; a bearing cavity 804 is provided at the upper part of the lower fastener assembly 803; screws 801 pass through the screw holes 802 and the short screw holes 805 in sequence, so that the fastener 8 and the lower fastener assembly 803 form a press-fit; the bearing cavity 804 of the fastener 8 and the bearing cavity 804 of the lower fastener assembly 803 together constitute a cylindrical mounting space for accommodating the double-disc shaft head 111.

[0054] like Figure 11As shown, when using this device, three steel pipes 16 are placed on the base plate 2 in a mutually perpendicular and orthogonal manner; the cross handle 401 is rotated to drive the clamping rod 4 to rotate along the axial direction of the limiting hole 301; through the pushing action of the clamping rod 4, the assembled connector 7 and the positioning block 6 are pushed to move towards the two horizontally placed steel pipes 16; the cross handle 401 is rotated again until the positioning block 6 firmly fixes the two horizontally placed steel pipes 16 in position. Further, the second inclined working surface 602 of the positioning block 6 is an arc-shaped groove 6021, which forms a surface contact with the outer peripheral surface of the steel pipe 16.

[0055] The radial clamping device 11 is rotated, driving it to advance axially along the through screw hole 901. Through the pushing action of the radial clamping device 11, the fastener 8 and the lower fastener assembly 803 are pushed towards the vertically placed steel pipe 16 until the fastener 8 and the lower fastener assembly 803 securely fix the vertically placed steel pipe 16 in place. Furthermore, the clamping surfaces of the fastener 8 and the lower fastener assembly 803 are V-groove structures. The advancing of the clamping rod 4 and the radial clamping device 11 keeps the steel pipe 16 in position in both the horizontal and vertical directions.

[0056] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A clamping device suitable for welding steel pipes, characterized in that: It includes a vertical baffle (1), a base plate (2), an opening limit plate (3), a clamping rod (4), a guide groove (5), a positioning block (6), an assembly connector (7), a fastener (8), a bearing (9), a base plate (10), a radial clamp (11), and a support cantilever (12). The vertical baffle (1) is fixedly installed in a manner perpendicular to the upper surface of the base plate (2), and the bottom edge of the vertical baffle (1) and the base plate (2) are welded together to form a rigid structure; The upper surface of the base plate (2) is fixedly provided with an opening limiting plate (3) and a guide groove (5); the opening limiting plate (3) has a limiting hole (301). The assembled connector (7) is provided with two through holes (701); the bottom of the assembled connector (7) is provided with a rotating receiving cavity (705); and the two side walls of the assembled connector (7) are provided with receiving slots (703). One end of the clamping rod (4) is provided with a cross handle (401), and the other end is provided with a stop round head (402) and a round shaft groove (403); the diameter D1 of the stop round head (402) and the inner diameter D2 of the rotating receiving cavity (705) form a clearance fit, and satisfy the relationship: 2mm≤D2-D1≤4mm; The positioning block (6) has a pin plate (6011) on its first inclined working surface (601) and an arc-shaped groove (6021) on its second inclined working surface (602); wherein the first inclined working surface (601) and the second inclined working surface (602) intersect at a 45° angle. The external dimensions of the pin plate (6011) are adapted to the internal dimensions of the socket (703), so that the pin plate (6011) can be inserted into the internal cavity of the socket (703); A U-shaped bearing seat (102) is connected to the base plate (10); the two side walls of the U-shaped bearing seat (102) are provided with coaxial mounting holes (103); one end of the support cantilever (12) is connected to a rotating disk (121), and the other end is connected to a bearing member (9); the rotating disk (121) can be placed inside the U-shaped bearing seat (102); the shaft pin (13) passes through the mounting hole (103) and the shaft hole (122) on the rotating disk (121) to form a rotating pair connection; The upper surface of the fastener (8) is provided with two through screw holes (802); the lower part of the fastener (8) is provided with a bearing cavity (804); the upper surface of the lower fastener assembly (803) is provided with two short screw holes (805); the upper part of the lower fastener assembly (803) is provided with a bearing cavity (804); the screw (801) passes through the screw hole (802) and the short screw hole (805) in sequence, so that the fastener (8) and the lower fastener assembly (803) form an axial pressing fit; the bearing cavity (804) of the fastener (8) and the bearing cavity (804) of the lower fastener assembly (803) together form a cylindrical installation space, which is used to accommodate the double disc shaft head (111) provided at one end of the radial clamping device (11), so that the radial clamping device (11) forms a mating connection with the fastener (8) and the lower fastener assembly (803).

2. The clamping device for steel pipe welding according to claim 1, characterized in that: By passing fastening screws (706) sequentially through the through holes (701) on the assembled connector (7) and the threaded holes (702) on the assembled lower connecting member (704), the assembled connector (7) and the assembled lower connecting member (704) are fastened together.

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