CN115625472A - Circular steel pipe column welding positioning device and positioning method thereof - Google Patents

Abstract

The invention discloses a circular steel pipe column welding positioning device and its positioning method. The vertical base is connected with the horizontal base to form a horizontally telescopic square base; there are more than one set of steel pipe column support frames on the left and right sides of the square base, and the steel pipe column support frames include at least two sets of X-shaped support bars. The hydraulic rods and connecting cross bars are connected between the X-shaped support rods. The hydraulic rods and connecting cross bars on the left and right sides are driven by the same motor; There are at least two discs, which are respectively used to clamp two steel pipe columns to be welded. The device can fix circular steel pipe columns, is suitable for steel pipe columns with different diameters, and has strong practicability.

Description

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

technical field

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 technique

During the welding process of the special-shaped column, the pipe mouth must be assembled before welding, and the pipe mouth assembly adopts a special assembly tool to ensure the straightness of the pipe and the flatness of the alignment. The alignment of the pipe butt joints must be flush with the inner wall, and the amount of misalignment of the inner wall must not exceed the standard. Therefore, pairing tools is extremely important for the welding process and subsequent welding quality. There is no special pairing tool in the prior art.

Contents of the invention

In view of the deficiencies in the prior art, the technical problem to be solved in 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 the present application is to provide a positioning method for the above-mentioned circular steel pipe column welding positioning device, so as to solve the problem of butt welding in engineering.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A circular steel pipe column welding positioning device, including 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 and the transverse base connected to form a horizontally telescopic square base; more than one set of steel pipe column support frames are respectively provided on the left and right sides of the square base, and the steel pipe column support frames include at least two sets of X-shaped support rods. The hydraulic rods and connecting cross bars are connected between the X-shaped support rods. The hydraulic rods on the left and right sides and the connecting cross bars are driven by the same motor; There are at least two holding discs, which are respectively used to clamp two steel pipe columns to be welded, and the clamping discs are connected by connecting rods; the clamping discs are connected to the square base through disc supports.

The clamping disk includes a rotating device, a blade 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; pull the handle , so that the rotating device rotates. Under the dual constraints of the bottom device and the rotating device, the blades will realize the process from opening to closing with a fixed track. During the process, the area of the regular hexagon formed by the six blades gradually decreases until it disappears.

The connecting rod is welded on the clamping disc and is used for connecting two clamping discs.

The upper end of the X-shaped support rod is provided with a pulley for assisting the rotation of the steel pipe column, and the pulley directly contacts the circular steel pipe column to facilitate the synchronous rotation of the steel pipe column and the clamping disc; on the side of the X-shaped support rod A motor is installed on the extended platform to provide a power source for the rotation of the steel pipe.

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

The longitudinal base is two metal rods in the direction of the long side, and the horizontal base is four metal rods in the direction of the short side; the horizontal base is composed of a large rectangular steel pipe, fixing bolts, grooves, and a small rectangular steel pipe; the small rectangular steel pipe It is provided with a groove and nested in a large rectangular steel pipe, which can move relative to each other. When the two steel pipes are moved to a suitable position, the fixing bolts will pass through the groove and be fixed, thereby realizing the free length expansion and contraction of the horizontal base.

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.

The disc bracket includes a top bracket, a vertical telescopic platform, and a transverse bar; the top bracket fits the shape of the clamping disc, and balls are provided on the upper surface to facilitate the clamping of the disc to roll; the vertical telescopic platform is composed of a hydraulic rod Driven to move the clamping disc up and down; the transverse rod changes accordingly when the length of the transverse base changes.

The method for positioning a steel pipe column by using the welding positioning device for a circular steel pipe column is as follows:

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

2) First estimate the diameter of the steel pipe, and pull the handle upwards along the groove, the blade will close along a certain trajectory under the dual movement restrictions of the round rod on the A side and the round rod on the B side, and the hole formed in the center will always be a regular hexagon , the clamping disc is preliminarily adjusted to a diameter similar to that of the steel pipe column, the nut is tightened, and the handle is fixed so that the inner diameter of the clamping disc does not change temporarily;

3) Start the hydraulic rod, and the height of the cross bar changes, which drives the X-shaped support rod to change synchronously; initially estimate the size of the steel pipe, and control the length of the hydraulic rod so that the width between the rods is similar to the diameter of the steel pipe. At this time, the large rectangular pipe The relative position of the small rectangular tube will also change accordingly, so that the horizontal base is at a suitable length, so that the distance between the X-shaped support rods just matches the diameter of the steel pipe;

4) Using a crane, place the steel pipe column on the pulley and pass 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 The rod will no longer move; tighten the fixing bolts, the length of the horizontal base and the hydraulic rod will not change; adjust the height of the hydraulic telescopic table so that the two sections of steel pipes are horizontally placed on the X-shaped support rod and the disc support;

5) Loosen the handle and make slight adjustments to make the blades clamp the steel pipe; at this time, the joints of the steel pipes at both ends are even, tighten the nuts and lock the handles, the inner diameter of the clamping disc will not change, and the steel pipe pairing is completed; If the end interface is not flush, you can adjust the two handles holding the disc separately until they are flush;

6) After the ports are flush, the worker can stand on the ground or on the scaffold for welding; when the steel pipe part is 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 the worker's convenience for operation position, continue welding; after the welding is completed, release the handle, and take out the welded steel pipe from one end.

Beneficial effects: Compared with the prior art, the circular steel pipe column welding positioning device of the present invention has simple structure, ingenious design, easy operation and precise control. Using the device for steel pipe column positioning can 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 practicability.

Description of drawings

Fig. 1 is a structural schematic diagram of a circular steel pipe column welding positioning device;

Fig. 2 is a structural schematic diagram of a transverse base;

Figure 3 is a schematic diagram of the structure of the clamping disc; (1) is the dismantling diagram of side A, (2) is the disassembly diagram of side B, (3) is a schematic diagram of the maximum inner diameter, (4) is a schematic diagram of the combination, (5) It is a schematic diagram of adjusting to any inner diameter.

Detailed ways

The present invention will be further described below in conjunction with specific drawings.

As shown in Figure 1, 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, disc support 9, hydraulic rod and transverse connecting rod 10. The longitudinal base 5 is two long-side metal rods, the horizontal base 8 is four short-side metal rods, and the two vertical bases 5 are connected with four horizontal bases 8 to form a horizontally telescopic square base. The transverse base 8 (Fig. 2) is composed of a large rectangular steel pipe 17, fixing bolts 18, grooves 19 and small rectangular steel pipes 20; the small rectangular steel pipes 20 are provided with grooves, and are nested in the large rectangular steel pipes 17 for relative movement , when the two steel pipes are moved to a suitable position, the fixing bolt 18 is passed through the groove 19 and fixed, thereby realizing the free length expansion and contraction of the transverse base.

A group of steel pipe column support frames are respectively arranged on the left and right sides of the square base. The hydraulic rod on the side and the connecting cross bar 10 are driven by the same motor; a clamping disc 1 is set between the steel pipe column support frames on the left and right sides, and there are two clamping discs 1, which are respectively used to clamp the two steel pipes to be welded. steel pipe columns, and the clamping discs are welded and connected by connecting rods 2 . The X-shaped support rod 4 is made up of two rectangular metal rods, which are connected by a hinge support 7. The hinge support 7 is a movable hinge support, and the angle of the two rods can be adjusted at will. The hydraulic bar and the connecting bar 10 include two hinge supports, a bar 24 and a hydraulic bar 25, and the bar 24 connects two X-shaped support bars 4, thereby maintaining the synchronous operation of the two support bars. There is a hinge support on the cross bar 24, and there is also a hinge support on the base, and the hydraulic rod 25 is connected on the cross bar and the base by two hinge supports. By adjusting the length of the hydraulic rod, the height and width of the X-shaped support rod can be changed. The two sides of the device are respectively equipped with hydraulic rods, 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-type 4 support rods can be adjusted, saving manpower.

As shown in FIG. 3 , the clamping disc 1 includes three parts: a rotating device 11 , blades 12 and a bottom device 13 . The round bar 12a of the A side of the blade is limited in the hole 11a of the rotating device, and the round bar 15 of the B side of the blade is limited in the hexagonal groove 14 of the bottom device. Pull the handle 16 to rotate the rotating device 11. Under the dual constraints of the bottom device 13 and the rotating device 11, the blades 12 will realize the process from opening to closing on a fixed track. During the process, the regular hexagonal area formed by the six blades is gradually diminishes until it disappears.

The clamping disk 1 is connected on the square base through a disk support 9 . Disc support 9 is made up of top support 21, vertical telescopic platform 22, transverse bar 23. The top bracket fits the shape of the clamping disc, and there are balls 26 on the upper surface to facilitate the rolling of the clamping disc; the vertical telescopic table 22 is driven by a hydraulic rod, which can move the clamping disc 1 up and down; The rod 23 plays a connecting role, and changes accordingly when the length of the transverse base changes.

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 extended platform of the side X-shaped support bar to provide a power source for the rotation of the steel pipe.

The method for positioning the steel pipe column by using the above-mentioned circular steel pipe column welding positioning device is as follows:

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

2) First estimate the diameter of the steel pipe, and move the handle 16 upward along the groove, the blade 12 will close along a certain trajectory under the dual movement restrictions of the round rods 12a and 15, and the hole formed in the center will always be a regular hexagon, clamping The holding disc is preliminarily adjusted to a diameter similar to the steel pipe column, the nut is tightened, and the handle 16 is fixed so that the inner diameter of the holding disc does not change temporarily.

3) Start the hydraulic rod 25, and 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 a motor, the height and width of the four X-shaped support rods change synchronously, preventing the steel pipe column from being unbalanced or even falling due to asynchronous phenomena. Initially estimate the size of the steel pipe, and control the length of the hydraulic rod so that the width between the rods is similar to the diameter of the steel pipe. At this time, the relative positions of the large rectangular pipe 17 and the small rectangular pipe 20 will also change accordingly, so that the horizontal base 8 is in a suitable position. length, so that the spacing of the X-shaped support rods 4 just meets the diameter of the steel pipe.

4) Using a crane, place the steel pipe column on the pulley 3 and pass through the hole holding the disc 1 . By observing the degree of 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 does not move. Tighten the fixing bolt 18, the length of the transverse base 8 and the hydraulic rod 25 will no longer change. Adjust the height of the hydraulic telescopic platform 22 so that two sections of steel pipes are horizontally placed on the X-shaped support rod 4 and the disc support 9.

5) Loosen handle 16 and make small adjustments so that the blades grip the steel pipe. This moment, the steel pipe interfaces at both ends are flush, the nuts are tightened and the handle 16 is imprisoned, the inner diameter of the clamping disc no longer changes, and the pairing of the steel pipes is completed. If the interfaces at both ends are not even, you can adjust the handles 16 of the two clamping discs until they are even.

6) After the ports are flush, workers can stand on the ground or on scaffolding for welding. After the welding of the steel pipe part is completed, the motor 6 can be opened, so that the steel pipe drives the clamping disc to rotate together. Because balls are placed on the disc support, the clamping device can rotate while keeping the mouth of the steel pipe flush, and the unwelded part can be rotated to a position convenient for the worker to continue welding.

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

It can be seen that using the device for steel pipe column positioning can 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 practicability.

Claims (9)

1. A circular steel pipe column welding positioning device is characterized by comprising a clamping disc (1), a connecting rod (2), an X-shaped supporting 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 with the transverse base (8) to form a square base which can be transversely stretched; more than one group of steel pipe column support frames are arranged on the left side and the right side of the square base respectively, each steel pipe column support frame at least comprises two groups of X-shaped support rods (4), hydraulic rods and connecting cross rods (10) are connected between the X-shaped support rods (4) in the same group, and the hydraulic rods and the connecting cross rods (10) on the left side and the right side are driven by the same motor; clamping discs (1) are arranged between the steel pipe column supporting frames on the left side and the right side, at least two clamping discs (1) are used for clamping two steel pipe columns to be welded respectively, and the clamping discs (1) are connected through connecting rods (2); the clamping disc (1) is connected to the square base through a disc support (9).

2. The circular steel pipe column welding positioning device according to claim 1, wherein the clamping disc comprises a rotating device (11), blades (12) and a bottom device (13); the A-side round rod (12 a) of the blade (12) is limited in the hole (11 a) of the rotating device (11), and the B-side round rod (15) of the blade is limited 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 limitation of the bottom device (13) and the rotating device (11), the blades (12) can realize the process from opening to closing by a fixed track, and the area of a regular hexagon formed by six blades is gradually reduced until the area disappears.

3. The circular steel pipe column welding positioning device according to claim 1, wherein the connecting rods (2) are welded on the clamping disks (1) and used for connecting the two clamping disks (1).

4. The circular steel pipe column welding positioning device according to claim 1, wherein; the pulley (3) used for assisting the steel pipe column to rotate is arranged at the top end of the X-shaped support rod (4), and the pulley (3) is in direct contact with the round steel pipe column, so that the steel pipe column and the clamping disc (1) can rotate synchronously; and a motor (6) is arranged on an extending platform of the side X-shaped support rod (4) to provide a power source for the rotation of the steel pipe.

5. The round steel pipe column welding and positioning device according to claim 1, wherein the X-shaped support rod (4) is composed of two rectangular metal rods which are connected through a movable hinge; the hydraulic rod and the connecting cross rod (10) comprise a cross rod (24) and a hydraulic rod (25), the two X-shaped support rods (4) are connected through the cross rod (24), and the hydraulic rod (25) is connected with the cross rod (24) through a hinge; the height and width of the X-shaped supporting rod (4) can be adjusted by operating the hydraulic rod (25).

6. The circular steel pipe column welding and positioning device according to claim 1, wherein the longitudinal bases (5) are two metal rods in the long side direction, and the transverse bases (8) are four metal rods in the short side direction; the transverse base (8) consists of a large rectangular steel pipe (17), a fixing bolt (18), a groove (19) and a small rectangular steel pipe (20); the small rectangular steel pipe (20) is provided with a groove (19) and is embedded in the large rectangular steel pipe (17) and can move relatively, and when the two steel pipes move to proper positions, the fixing bolt (18) passes through the groove (19) and is fixed, so that the free length of the transverse base (8) can be extended and retracted.

7. The circular steel pipe column welding and positioning device according to claim 1, wherein the X-shaped support rod (4) is connected with the longitudinal base (5) and the transverse base (8) through a hinged support (7), and the hinged support (7) is a movable hinged support.

8. The circular steel pipe column welding positioning device according to claim 1, wherein the disc support (9) comprises a top support (21), a vertical telescopic table (22) and a transverse rod (23); the top support (21) is attached to the shape of the clamping disc, and balls (26) are arranged on the upper surface of the top support to facilitate the rolling of the clamping disc; the vertical telescopic table (22) is driven by a hydraulic rod and can move the clamping disc up and down; the transverse rod (23) changes correspondingly when the length of the transverse base (8) changes.

9. The method for positioning the steel pipe column by using the circular steel pipe column welding and positioning device of claim 1 is characterized by comprising the following steps of:

1) Before the installation starts, the clamping disc (1) is in an open state, and the handle (16) is positioned at the bottommost part;

2) Firstly, the diameter of a steel pipe is estimated, a handle (16) is pulled upwards along a groove, blades (12) are closed along a certain track under the double motion limitation of an A-surface round rod (12 a) and a B-surface round rod (15), a hole formed in the center is always in a regular hexagon shape, a clamping disc is preliminarily adjusted to be similar to the diameter of the steel pipe column, a nut is screwed, and the handle (16) is fixed, so that the inner diameter of the clamping disc is not changed temporarily;

3) The hydraulic rod (25) is started, and the height of the cross rod (24) is changed, so that the X-shaped support rod (4) is driven to change synchronously; preliminarily estimating the size of the steel pipe, controlling the length of the hydraulic rod to enable the width between the rod pieces to be close to the diameter of the steel pipe, and changing the relative positions of the large rectangular pipe (17) and the small rectangular pipe (20) at the moment to enable the transverse base (8) to be in a proper length so that the distance between the X-shaped support rods (4) just accords with the diameter of the steel pipe;

4) Placing the steel pipe column on the pulley (3) by using a crane and passing through the hole of the clamping disc (1); the length of the hydraulic rod (25) is adjusted by observing the fit degree of the X-shaped support rod (4) and the steel pipe column until the steel pipe column is fixed on the X-shaped support rod (4) and does not move any more; the length of the transverse base (8) and the hydraulic rod (25) can not be changed any more by screwing the fixing bolt (18); the height of the hydraulic telescopic table (22) is adjusted, so that two sections of steel pipes are horizontally placed on the X-shaped supporting rod (4) and the disc support (9);

5) Loosening the handle (16) and carrying out fine adjustment to enable the blade (12) to clamp the steel pipe; at the moment, the steel pipe joints at the two ends are flush, the nut is screwed tightly, the handle (16) is locked, the inner diameter of the clamping disc (1) is not changed any more, and the steel pipe assembly is finished; if the interfaces at the two ends are not level, the handles (16) of the two clamping disks can be respectively adjusted until the two clamping disks are level;

6) After the ports are level, workers can stand on the ground or on a scaffold to weld; after the welding of the steel pipe part is finished, the motor (6) can be turned on, so that the steel pipe drives the clamping disc to rotate together, the part which is not welded is rotated to a position where a worker can conveniently operate, and the welding is continued; after the welding is finished, the handle (16) is loosened, and the welded steel pipe is taken out from one end.

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