A circular steel pipe column welding positioning device and positioning method thereof

Abstract

The invention discloses a circular steel pipe column welding positioning device and a positioning method thereof, the device comprises a clamping disc, a connecting rod, an X-shaped support rod, a longitudinal base, a transverse base, a disc support, a hydraulic rod and a connecting cross bar; the longitudinal base is connected to the transverse base to form a transversely retractable square base; one or more steel pipe column support frames are respectively arranged on the left and right sides of the square base, the steel pipe column support frames comprise at least two groups of X-shaped support rods, a hydraulic rod and a connecting cross bar are connected between each X-shaped support rod of the same group, and the hydraulic rods and the connecting cross bars on the left and right sides are driven by the same motor; a clamping disc is arranged between the steel pipe column support frames on the left and right sides, and there are at least two clamping discs, which are respectively used to clamp two steel pipe columns to be welded. The device can fix the circular steel pipe column, is suitable for steel pipe columns of different diameters, and has strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of steel welding, and in particular relates to a circular steel pipe column welding positioning device and a positioning method thereof. Background Art

[0002] During the welding of special-shaped columns, the steel pipe ends need to be aligned before welding. A special alignment tool is used to align the pipe ends to ensure the straightness and flushness of the pipe ends. The inner walls of the butt welded pipes must be aligned and the misalignment of the inner walls must not exceed the standard. Therefore, the alignment tool is extremely important for the welding process and subsequent welding quality. There is no special alignment tool in the prior art. Summary of the invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this application is to provide a positioning device that can adapt to the welding of circular steel pipe columns with different diameters. Another technical problem to be solved by this application is to provide a positioning method for the circular steel pipe column welding positioning device to solve the problem of group welding in engineering.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A circular steel pipe column welding positioning device comprises a clamping disc, a connecting rod, an X-shaped support rod, a longitudinal base, a transverse base, a disc support, a hydraulic rod and a connecting cross bar; the longitudinal base is connected to the transverse base to form a transversely retractable square base; one or more steel pipe column support frames are respectively provided on the left and right sides of the square base, the steel pipe column support frames comprise at least two groups of X-shaped support rods, hydraulic rods and connecting cross bars are connected between the X-shaped support rods in the same group, and the hydraulic rods and connecting cross bars on the left and right sides are driven by the same motor; a clamping disc is provided between the steel pipe column support frames on the left and right sides, the clamping discs have at least two, and are respectively used to clamp two steel pipe columns to be welded, and the clamping discs are connected by a connecting rod; the clamping disc is connected to the square base via a disc support.

[0006] The clamping disc includes a rotating device, blades and a bottom device; the round rod on the A side of the blade is restricted in the hole of the rotating device, and the round rod on the B side of the blade is restricted in the hexagonal groove of the bottom device; the handle is pulled to rotate the rotating device, and under the dual restrictions of the bottom device and the rotating device, the blade will realize the process from opening to closing on a fixed track, and the area of ​​the regular hexagon formed by the six blades gradually decreases until it disappears.

[0007] The connecting rod is welded on the clamping disc and is used to connect the two clamping discs.

[0008] A pulley for assisting the rotation of the steel pipe column is provided at the top of the X-shaped support rod. The pulley directly contacts the circular steel pipe column, facilitating the synchronous rotation of the steel pipe column and the clamping disc. A motor is installed on the extension platform of the side X-shaped support rod to provide a power source for the rotation of the steel pipe.

[0009] The X-shaped support rod is composed of two rectangular metal rods connected by a movable hinge; the hydraulic rod and connecting cross bar include a cross bar and a hydraulic rod, the two X-shaped support rods are connected by the cross bar, and the hydraulic rod is connected to the cross bar by a hinge; by operating the hydraulic rod, the height and width of the X-shaped support rod can be adjusted.

[0010] The longitudinal base is composed of two metal rods in the long side direction, and the transverse base is composed of four metal rods in the short side direction; the transverse base is composed of a large rectangular steel pipe, fixing bolts, grooves, and small rectangular steel pipes; the small rectangular steel pipe is provided with a groove and is nested in the large rectangular steel pipe, and can move relative to each other. When the two steel pipes are moved to the appropriate position, the fixing bolts are passed through the grooves and fixed, thereby realizing the free length extension and contraction of the transverse base.

[0011] The X-shaped support rod is connected with the longitudinal base and the transverse base through a hinge support, and the hinge support is a movable hinge support.

[0012] The disc support includes a top bracket, a vertical telescopic platform, and a transverse rod; the top bracket fits the shape of the clamping disc and is provided with balls on the upper surface to facilitate the rolling of the clamping disc; the vertical telescopic platform is driven by a hydraulic rod and can move the clamping disc up and down; the transverse rod changes accordingly when the length of the transverse base changes.

[0013] The method for positioning a steel pipe column using the circular steel pipe column welding positioning device comprises the following steps:

[0014] 1) Before installation, the clamping disc is in the open state and the handle is at the bottom;

[0015] 2) First, estimate the diameter of the steel pipe, turn the handle upward along the groove, and the blade will close along a certain trajectory under the dual motion restrictions of the round rod on the A side and the round rod on the B side. The hole formed in the center is always a regular hexagon. The clamping disc is initially adjusted to a diameter similar to that of the steel pipe column, and the nut is tightened to fix the handle so that the inner diameter of the clamping disc does not change temporarily;

[0016] 3) Start the hydraulic rod, the height of the crossbar changes, thereby driving the X-shaped support rod to change synchronously; preliminarily estimate the size of the steel pipe, control the length of the hydraulic rod so that the width between the rods is close to the diameter of the steel pipe, at this time, the relative position of the large rectangular steel pipe and the small rectangular steel pipe will also change accordingly, so that the horizontal base is at an appropriate length, so that the spacing of the X-shaped support rods just matches the diameter of the steel pipe;

[0017] 4) Use a crane to place the steel pipe column on the pulley and pass it through the hole of the clamping disc; by observing the fit between the X-shaped support rod and the steel pipe column, adjust the length of the hydraulic rod until the steel pipe column is fixed on the X-shaped support rod and no longer moves; tighten the fixing bolts, and the length of the horizontal base and the hydraulic rod will no longer change; adjust the height of the vertical telescopic table so that the two sections of steel pipe are placed horizontally on the X-shaped support rod and the disc support;

[0018] 5) Loosen the handle and make slight adjustments so that the blades clamp the steel pipe; at this time, the steel pipe interfaces at both ends are flush, tighten the nuts and lock the handles, the inner diameter of the clamping disc no longer changes, and the steel pipe assembly is completed; if the interfaces at both ends are not flush, you can adjust the handles of the two clamping discs separately until they are flush;

[0019] 6) After the ends are flush, workers can stand on the ground or on the scaffolding to perform welding; when the steel pipe is partially welded, the motor can be turned on so that the steel pipe drives the clamping disc to rotate together, and the unwelded part is rotated to a position that is convenient for workers to operate, and continue welding; after welding is completed, release the handle and take out the welded steel pipe from one end.

[0020] Beneficial effects: Compared with the prior art, the circular steel pipe column welding positioning device of the present invention has a simple structure, ingenious design, easy operation and precise control. The device is used to position the steel pipe column, fix the circular steel pipe column, close and fix the two steel pipes to be welded together, and perform subsequent welding operations. It is suitable for steel pipe columns of different diameters and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a circular steel pipe column welding positioning device;

[0022] Figure 2 It is a schematic diagram of the structure of the horizontal base;

[0023] Figure 3 It is a schematic diagram of the structure of the clamping disc; (1) is the disassembly diagram of the A side, (2) is the disassembly diagram of the B side, (3) is the schematic diagram of the maximum inner diameter, (4) is the combined schematic diagram, and (5) is the schematic diagram of adjustment to any inner diameter. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the specific drawings.

[0025] like Figure 1As shown, the circular steel pipe column welding positioning device of the present invention includes a clamping disc 1, a connecting rod 2, a pulley 3, an X-shaped support rod 4, a longitudinal base 5, a motor 6, a hinge support 7, a transverse base 8, a disc support 9, a hydraulic rod and a transverse connecting rod 10. The longitudinal base 5 is two metal rods in the long direction, and the transverse base 8 is four metal rods in the short direction. The two longitudinal bases 5 are connected with the four transverse bases 8 to form a square base that can be laterally extended. The transverse base 8 ( Figure 2 ) consists of a large rectangular steel tube 17, a fixing bolt 18, a groove 19, and a small rectangular steel tube 20; the small rectangular steel tube 20 is provided with a groove and is nested in the large rectangular steel tube 17, and can move relative to each other. When the two steel tubes are moved to a suitable position, the fixing bolt 18 is passed through the groove 19 and fixed, thereby realizing the free length extension and retraction of the lateral base.

[0026] A set of steel pipe column support frames are arranged on the left and right sides of the square base, respectively. The steel pipe column support frames include two sets of X-shaped support rods 4. A hydraulic rod and a connecting cross bar 10 are connected between the two sets of X-shaped support rods 4. The hydraulic rods and connecting cross bars 10 on the left and right sides are driven by the same motor. A clamping disc 1 is arranged between the steel pipe column support frames on the left and right sides. There are two clamping discs 1, which are respectively used to clamp the two steel pipe columns to be welded. The clamping discs are welded and connected by connecting rods 2. The X-shaped support rod 4 is composed of two rectangular metal rods, which are connected by a hinge support 7. The hinge support 7 is a movable hinge support and can adjust the angle of the two rods at will. The hydraulic rod and connecting cross bar 10 include two hinge supports, a cross bar 24 and a hydraulic rod 25. The cross bar 24 connects the two X-shaped support rods 4, thereby maintaining the synchronous operation of the two support rods. There is a hinge support on the cross bar 24, and there is also a hinge support on the base. The hydraulic rod 25 is connected to the cross bar and the base through two hinge supports. By adjusting the length of the hydraulic rod, the height and width of the X-shaped support rod can be changed. Hydraulic rods are provided on both sides of the device, and the two hydraulic rods are controlled by a motor, thereby realizing the synchronous operation of the four support rods. By operating the hydraulic rod 25, the height and width of the X-shaped 4 support rods can be adjusted, saving manpower.

[0027] like Figure 3 As shown, the clamping disc 1 includes three parts: a rotating device 11, a blade 12 and a bottom device 13. The round rod 12a on the A side of the blade is restricted in the hole 11a of the rotating device, and the round rod 15 on the B side of the blade is restricted in the hexagonal groove 14 of the bottom device. Pulling the handle 16 rotates the rotating device 11. Under the dual restrictions of the bottom device 13 and the rotating device 11, the blade 12 will realize the process from opening to closing in a fixed track. During the process, the area of ​​the regular hexagon formed by the six blades gradually decreases until it disappears.

[0028] The clamping disc 1 is connected to the square base through the disc support 9. The disc support 9 is composed of a top bracket 21, a vertical telescopic platform 22, and a transverse rod 23. The top bracket fits the shape of the clamping disc, and a ball 26 is provided on the upper surface to facilitate the rolling of the clamping disc; the vertical telescopic platform 22 is driven by a hydraulic rod to move the clamping disc 1 up and down; the transverse rod 23 plays a connecting role and changes accordingly when the length of the transverse base changes.

[0029] The pulley 3 directly contacts the circular steel pipe column, which is convenient for the synchronous rotation of the steel pipe column and the clamping disc 1; the motor 6 is installed on the extension platform of the side X-shaped support rod to provide a power source for the rotation of the steel pipe.

[0030] The method for positioning a steel pipe column using the circular steel pipe column welding positioning device comprises the following steps:

[0031] 1) Before installation, the clamping disc 1 is in an open state, and the handle 16 is at the bottom.

[0032] 2) First, estimate the diameter of the steel pipe, and push the handle 16 upward along the groove. Under the dual motion constraints of the round rods 12a and 15, the blade 12 closes along a certain trajectory, and the hole formed in the center is always a regular hexagon. The clamping disc is initially adjusted to a diameter similar to that of the steel pipe column, and the nut is tightened to fix the handle 16 so that the inner diameter of the clamping disc does not change temporarily.

[0033] 3) Start the hydraulic rod 25, the height of the cross bar 24 changes, thereby driving the X-shaped support rod 4 to change synchronously. Since the two hydraulic rods are controlled by one motor, the height and width of the four X-shaped support rods change synchronously to prevent the phenomenon of asynchronous change that causes the steel pipe column to be unbalanced or even fall. Preliminary estimate the size of the steel pipe, control the length of the hydraulic rod so that the width between the rods is close to the diameter of the steel pipe. At this time, the relative positions of the large rectangular steel pipe 17 and the small rectangular steel pipe 20 will also change accordingly, so that the horizontal base 8 is at an appropriate length, so that the spacing of the X-shaped support rods 4 just matches the diameter of the steel pipe.

[0034] 4) Use a crane to place the steel pipe column on the pulley 3 and pass it through the hole of the clamping disc 1. By observing the fit between the X-shaped support rod and the steel pipe column, adjust the length of the hydraulic rod until the steel pipe column is fixed on the X-shaped support rod and no longer moves. Tighten the fixing bolts 18, and the length of the horizontal base 8 and the hydraulic rod 25 will no longer change. Adjust the height of the vertical telescopic platform 22 so that the two sections of steel pipe are placed horizontally on the X-shaped support rod 4 and the disc support 9.

[0035] 5) Loosen the handle 16 and make slight adjustments so that the blades clamp the steel pipe. At this point, the steel pipe interfaces at both ends are flush, tighten the nut and lock the handle 16, the inner diameter of the clamping disc no longer changes, and the steel pipe assembly is complete. If the interfaces at both ends are not flush, adjust the handles 16 of the two clamping discs separately until they are flush.

[0036] 6) After the ends are aligned, the worker can stand on the ground or on the scaffolding to weld. When the steel pipe is partially welded, the motor 6 can be turned on so that the steel pipe drives the clamping disc to rotate together. Since there are balls on the disc support, the clamping device can rotate while keeping the steel pipe ends aligned, and the unwelded part can be rotated to a position that is convenient for the worker to operate, and then continue welding.

[0037] 7) After welding is completed, loosen the handle 16 and take out the welded steel pipe from one end.

[0038] It can be seen that the device is used to position steel pipe columns, and can fix circular steel pipe columns, close and fix two steel pipes to be welded together for subsequent welding operations. It is suitable for steel pipe columns of different diameters and has strong practicality.

Claims

1. A circular steel pipe column welding positioning device, characterized in that: The invention comprises a clamping disc (1), a connecting rod (2), an X-shaped support rod (4), a longitudinal base (5), a transverse base (8), a disc support (9), a hydraulic rod and a connecting cross rod (10); the longitudinal base (5) is connected to the transverse base (8) to form a transversely retractable square base; one or more steel pipe column support frames are respectively provided on the left and right sides of the square base, the steel pipe column support frames comprising at least two groups of X-shaped support rods (4), a hydraulic rod and a connecting cross rod (10) are connected between each X-shaped support rod (4) in the same group, and the hydraulic rods and the connecting cross rod (10) on the left and right sides are driven by the same motor; a clamping disc (1) is provided between the steel pipe column support frames on the left and right sides, and the clamping disc (1) has at least two parts, each of which is used to clamp two steel pipes to be welded. The pipe column and the clamping disc (1) are connected by a connecting rod (2); the clamping disc (1) is connected to a square base via a disc support (9); the clamping disc comprises a rotating device (11), a blade (12) and a bottom device (13); the round rod (12a) on the A side of the blade (12) is restricted in the hole (11a) of the rotating device (11), and the round rod (15) on the B side of the blade is restricted in the hexagonal groove (14) of the bottom device (13); the handle (16) is pulled to rotate the rotating device (11), and under the dual restriction of the bottom device (13) and the rotating device (11), the blade (12) will realize the process from opening to closing in a fixed track, and the area of ​​the regular hexagon formed by the six blades gradually decreases until it disappears during the process.

2. The circular steel pipe column welding positioning device according to claim 1, characterized in that: The connecting rod (2) is welded to the clamping disc (1) and is used to connect the two clamping discs (1).

3. The circular steel pipe column welding positioning device according to claim 2, characterized in that: A pulley (3) for assisting the rotation of the steel pipe column is provided at the top end of the X-shaped support rod (4); the pulley (3) directly contacts the circular steel pipe column, facilitating the synchronous rotation of the steel pipe column and the clamping disc (1); and a motor (6) is installed on the extension platform of the side X-shaped support rod (4) to provide a power source for the rotation of the steel pipe.

4. The circular steel pipe column welding positioning device according to claim 3, characterized in that: The X-shaped support rod (4) is composed of two rectangular metal rods connected by a movable hinge; the hydraulic rod and connecting cross rod (10) include a cross rod (24) and a hydraulic rod (25); the two X-shaped support rods (4) are connected by the cross rod (24); the hydraulic rod (25) is connected to the cross rod (24) by a hinge; the height and width of the X-shaped support rod (4) can be adjusted by operating the hydraulic rod (25).

5. The circular steel pipe column welding positioning device according to claim 4, characterized in that: The longitudinal base (5) is composed of two metal rods in the long-side direction, and the transverse base (8) is composed of four metal rods in the short-side direction; the transverse base (8) is composed of a large rectangular steel tube (17), a fixing bolt (18), a groove (19), and a small rectangular steel tube (20); the small rectangular steel tube (20) is provided with a groove (19) and is nested in the large rectangular steel tube (17) so as to be relatively movable; when the two steel tubes are moved to a suitable position, the fixing bolt (18) is passed through the groove (19) and fixed, thereby realizing the free length extension and contraction of the transverse base (8).

6. The circular steel pipe column welding positioning device according to claim 5, characterized in that: The X-shaped support rod (4) is connected to the longitudinal base (5) and the transverse base (8) via a hinge support (7), and the hinge support (7) is a movable hinge support.

7. The circular steel pipe column welding positioning device according to claim 6, characterized in that: The disc support (9) comprises a top bracket (21), a vertical telescopic platform (22), and a transverse rod (23); the top bracket (21) fits the shape of the clamping disc and is provided with a ball (26) on the upper surface to facilitate the rolling of the clamping disc; the vertical telescopic platform (22) is driven by a hydraulic rod and can move the clamping disc up and down; the transverse rod (23) changes accordingly when the length of the transverse base (8) changes.

8. A method for positioning a steel pipe column using the circular steel pipe column welding positioning device according to claim 7, characterized in that: Here are the steps: 1) Before installation, the clamping disc (1) is in the open state and the handle (16) is at the bottom; 2) First, estimate the diameter of the steel pipe, and turn the handle (16) upward along the groove. Under the dual motion restriction of the A-side round rod (12a) and the B-side round rod (15), the blade (12) closes along a certain trajectory, and the hole formed in the center is always a regular hexagon. The clamping disc is initially adjusted to a diameter similar to that of the steel pipe column, and the nut is tightened to fix the handle (16) so that the inner diameter of the clamping disc does not change temporarily; 3) The hydraulic rod (25) is activated, and the height of the cross bar (24) changes, thereby driving the X-shaped support rod (4) to change synchronously; the size of the steel pipe is preliminarily estimated, and the length of the hydraulic rod is controlled so that the width between the rods is close to the diameter of the steel pipe. At this time, the relative positions of the large rectangular steel pipe (17) and the small rectangular steel pipe (20) will also change accordingly, so that the horizontal base (8) is at an appropriate length, so that the spacing of the X-shaped support rods (4) just matches the diameter of the steel pipe; 4) Use a crane to place the steel pipe column on the pulley (3) and pass it through the hole of the clamping disc (1); by observing the fit between the X-shaped support rod (4) and the steel pipe column, adjust the length of the hydraulic rod (25) until the steel pipe column is fixed on the X-shaped support rod (4) and no longer moves; tighten the fixing bolts (18) so that the length of the horizontal base (8) and the hydraulic rod (25) will no longer change; adjust the height of the vertical telescopic platform (22) so that the two sections of steel pipe are placed horizontally on the X-shaped support rod (4) and the disc support (9); 5) Loosen the handle (16) and make slight adjustments so that the blade (12) clamps the steel pipe. At this time, the steel pipe interfaces at both ends are flush. Tighten the nut and lock the handle (16). The inner diameter of the clamping disc (1) no longer changes, and the steel pipe assembly is completed. If the interfaces at both ends are not flush, adjust the handles (16) of the two clamping discs respectively until they are flush. 6) After the ends are aligned, the worker can stand on the ground or on a scaffold to perform welding; when the steel pipe is partially welded, the motor (6) can be turned on so that the steel pipe drives the clamping disc to rotate together, and the unwelded part is rotated to a position convenient for the worker to operate, and welding can be continued; after welding is completed, the handle (16) is released and the welded steel pipe is taken out from one end.

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