CN115625472A - Circular steel pipe column welding positioning device and positioning method thereof - Google Patents
Circular steel pipe column welding positioning device and positioning method thereof Download PDFInfo
- Publication number
- CN115625472A CN115625472A CN202211092183.5A CN202211092183A CN115625472A CN 115625472 A CN115625472 A CN 115625472A CN 202211092183 A CN202211092183 A CN 202211092183A CN 115625472 A CN115625472 A CN 115625472A
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- steel pipe
- rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Abstract
The invention discloses a circular steel pipe column welding positioning device and a positioning method thereof, wherein the device comprises a clamping disc, a connecting rod, an X-shaped supporting rod, a longitudinal base, a transverse base, a disc support, a hydraulic rod and a connecting cross rod; the longitudinal base and the transverse base are connected 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, hydraulic rods and connecting cross rods are connected between the X-shaped support rods in the same group, and the hydraulic rods on the left side and the hydraulic rods on the right side and the connecting cross rods are driven by the same motor; and at least two clamping disks are arranged between the steel pipe column supporting frames on the left side and the right side and are respectively used for clamping two steel pipe columns to be welded. The device can be fixed to circular steel-pipe column, is applicable to the steel-pipe column of different diameters, and the practicality is strong.
Description
Technical Field
The invention belongs to the technical field of steel welding, and particularly relates to a circular steel pipe column welding positioning device and a positioning method thereof.
Background
In the welding process of the special-shaped column, the pipe orifice of the steel pipe needs to be assembled before welding, and the pipe orifice assembly adopts a special assembly tool to ensure the straightness of the pipe and the alignment degree of the orifice. The assembly of the pipeline butt welding openings must be realized by leveling the inner walls, and the misalignment of the inner walls cannot exceed the standard. Therefore, the set of tools is extremely important to the welding process and the subsequent welding quality. There is no special set-up tool in the prior art.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the application is to provide the positioning device capable of adapting to welding of the circular steel pipe columns with different diameters. Another technical problem to be solved by the present application is to provide a positioning method of the above circular steel pipe column welding positioning device, so as to solve the problem of assembly welding in engineering.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a circular steel pipe column welding positioning device comprises a clamping disc, a connecting rod, an X-shaped supporting rod, a longitudinal base, a transverse base, a disc support, a hydraulic rod and a connecting cross rod; the longitudinal base is connected with the transverse base 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, hydraulic rods and connecting cross rods are connected between the X-shaped support rods in the same group, and the hydraulic rods on the left side and the hydraulic rods on the right side and the connecting cross rods are driven by the same motor; clamping discs are arranged between the steel pipe column supporting frames on the left side and the right side, at least two clamping discs are arranged and are respectively used for clamping two steel pipe columns to be welded, and the clamping discs are connected through a connecting rod; the clamping disc is connected to the square base through a disc support.
The clamping disc comprises a rotating device, blades and a bottom device; the round rod on the A surface of the blade is limited in the hole of the rotating device, and the round rod on the B surface of the blade is limited in the hexagonal groove of the bottom device; the handle is pulled to enable the rotating device to rotate, the blades can realize the process from opening to closing through the fixed track under the double limitation of the bottom device and the rotating device, and the area of a regular hexagon formed by the six blades in the process is gradually reduced until the area disappears.
The connecting rod is welded on the clamping disks and is used for connecting the two clamping disks.
The pulley for assisting the steel pipe column to rotate is arranged at the top end of the X-shaped support rod and directly contacts the round steel pipe column, so that the steel pipe column and the clamping disc can rotate synchronously; and a motor is arranged on the extension platform of the side X-shaped support rod to provide a power source for the rotation of the steel pipe.
The X-shaped supporting rod consists of two rectangular metal rod pieces which are connected through a movable hinge; the hydraulic rod and the connecting cross rod comprise a cross rod and a hydraulic rod, the two X-shaped support rods are connected through the cross rod, and the hydraulic rod is connected with the cross rod through a hinge; the height and width of the X-shaped supporting rod can be adjusted by operating the hydraulic rod.
The longitudinal base is two metal rod pieces in the long side direction, and the transverse base is four metal rod pieces in the short side direction; the transverse base is composed of a large rectangular steel pipe, a fixing bolt, a groove and a small rectangular steel pipe; the small rectangular steel pipe is provided with a groove and is embedded in the large rectangular steel pipe, relative movement can be carried out, when the two steel pipes move to proper positions, the fixing bolt passes through the groove and is fixed, and therefore free length extension of the transverse base is achieved.
The X-shaped supporting rod is connected with the longitudinal base and the transverse base through a hinged support, and the hinged support is a movable hinged support.
The disc support comprises a top support, a vertical telescopic table and a transverse rod; the top bracket is attached to the shape of the clamping disc, and balls are arranged on the upper surface of the top bracket to facilitate the rolling of the clamping disc; the vertical telescopic table is driven by a hydraulic rod and can move the clamping disc up and down; the transverse rod changes correspondingly when the length of the transverse base changes.
The method for positioning the steel pipe column by adopting the circular steel pipe column welding and positioning device comprises the following steps:
1) Before the installation starts, the clamping disc is in an open state, and the handle is positioned at the bottommost part;
2) Firstly, estimating the diameter of a steel pipe, pulling a handle upwards along a groove, closing a blade along a certain track under the dual motion limitation of an A-surface round rod and a B-surface round rod, wherein a hole formed in the center is always in a regular hexagon shape, preliminarily adjusting a clamping disc to be similar to the diameter of the steel pipe column, screwing a nut, and fixing the handle so that the inner diameter of the clamping disc is not changed temporarily;
3) The hydraulic rod is started, and the height of the cross rod is changed, so that the X-shaped supporting rod is driven to synchronously change; 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 and the small rectangular pipe to enable the transverse base to be in a proper length so that the distance between the X-shaped support rods just meets the diameter of the steel pipe;
4) Placing the steel pipe column on the pulley by using a crane and passing through the hole of the clamping disc; the length of the hydraulic rod is adjusted by observing the fitting degree of the X-shaped support rod and the steel pipe column until the steel pipe column is fixed on the X-shaped support rod and does not move any more; the length of the transverse base and the length of the hydraulic rod are not changed any more by screwing the fixing bolt; adjusting the height of the hydraulic telescopic table to enable the two sections of steel pipes to be horizontally placed on the X-shaped supporting rod and the disc support;
5) Loosening the handle and carrying out fine adjustment to enable the blade 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 is locked, the inner diameter of the clamping disc is not changed, and the steel pipe assembly is finished; if the interfaces at the two ends are not parallel and level, the handles of the two clamping disks can be respectively adjusted until the two clamping disks are parallel and level;
6) After the ports are level, workers can stand on the ground or on a scaffold for welding; after the welding of the steel pipe part is finished, the motor can be started, 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; and after the welding is finished, loosening the handle, and taking out the welded steel pipe from one end.
Has the beneficial effects that: compared with the prior art, the circular steel pipe column welding and positioning device is simple in structure, ingenious in design, easy to operate and accurate in control. The device is used for positioning the steel pipe column, the round steel pipe column can be fixed, two steel pipes to be welded are folded and fixed together to be assembled, subsequent welding operation is carried out, the device is suitable for steel pipe columns with different diameters, and the practicability is high.
Drawings
FIG. 1 is a structural schematic diagram of a circular steel pipe column welding and positioning device;
FIG. 2 is a schematic view of the structure of the lateral base;
FIG. 3 is a schematic view of the structure of the clamping disk; the drawing is (1) an exploded drawing on the A side, (2) an exploded drawing on the B side, (3) a schematic drawing of the maximum inner diameter, (4) a schematic drawing of the combination, and (5) a schematic drawing of the adjustment to any inner diameter.
Detailed Description
The invention is further described below with reference to the specific drawings.
As shown in fig. 1, the welding and positioning device for the circular steel pipe column comprises 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 hinged support 7, a transverse base 8, a disc support 9, a hydraulic rod and a transverse connecting rod 10. The longitudinal bases 5 are two metal rods in the long edge direction, the transverse bases 8 are four metal rods in the short edge direction, and the two longitudinal bases 5 are connected with the 4 transverse bases 8 to form a square base capable of transversely stretching. The transverse base 8 (figure 2) is composed 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 and is embedded in the large rectangular steel pipe 17, relative movement can be carried out, 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 extension of the transverse base is realized.
The left side and the right side of the square base are respectively provided with 1 group of steel pipe column supporting frames, each steel pipe column supporting frame comprises two groups of X-shaped supporting rods 4, hydraulic rods and connecting cross rods 10 are connected between 2 groups of X-shaped supporting rods 4, and the hydraulic rods and the connecting cross rods 10 on the left side and the right side are driven by the same motor; the clamping discs 1 are arranged between the steel pipe column supporting frames on the left side and the right side, the number of the clamping discs 1 is two, the clamping discs are respectively used for clamping two steel pipe columns to be welded, and the clamping discs are connected through the connecting rods 2 in a welding mode. The X-shaped supporting rod 4 consists of two rectangular metal rod pieces which are connected through a hinged support 7, the hinged support 7 is a movable hinged support, and the angles of the two rod pieces can be adjusted at will. The hydraulic bar and connecting cross bar 10 comprises two hinged supports, a cross bar 24 and a hydraulic bar 25, and the cross bar 24 connects the two X-shaped support bars 4, thereby maintaining the synchronous operation of the two support bars. The cross bar 24 is provided with a hinged support, the base is also provided with a hinged support, and the hydraulic rod 25 is connected to the cross bar and the base through the two hinged supports. By adjusting the length of the hydraulic rod, the height and width of the X-shaped supporting rod can be changed. The two sides of the device are respectively provided with a hydraulic rod, and the two hydraulic rods are controlled by a motor, so that the synchronous operation of the four support rods is realized. By operating the hydraulic rod 25, the height and width of the X-shaped 4 supporting rod can be adjusted, and manpower is saved.
As shown in fig. 3, the clamping disk 1 comprises three parts: a rotating device 11, a blade 12 and a bottom device 13. The a-side rod 12a of the blade is confined in the hole 11a of the rotating device and the B-side rod 15 of the blade is confined in the hexagonal recess 14 of the bottom device. Pulling the handle 16 makes the rotating device 11 rotate, 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 in a fixed track, and in the process, the area of the regular hexagon formed by the six blades gradually becomes smaller until disappears.
The clamping disc 1 is connected to the square base through a disc support 9. The disc support 9 consists of a top support 21, a vertical telescopic table 22 and a transverse rod 23. The top bracket is attached to the shape of the clamping disc, and the upper surface of the top bracket is provided with a ball 26 which is convenient for the clamping disc to roll; the vertical telescopic table 22 is driven by a hydraulic rod and can move the clamping disc 1 up and down; the transverse bar 23 serves as a link and changes correspondingly when the length of the transverse base changes.
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; the motor 6 is arranged on the extending platform of the side X-shaped support rod piece and provides a power source for the rotation of the steel pipe.
The method for positioning the steel pipe column by adopting the circular steel pipe column welding and positioning device comprises the following steps:
1) Before the installation starts, the clamping disk 1 is in the open state and the handle 16 is at the bottom.
2) Firstly, the diameter of the steel pipe is estimated, the handle 16 is pulled upwards along the groove, the blades 12 are closed along a certain track under the limitation of the double movement of the round rods 12a and 15, the hole formed in the center is always in a regular hexagon shape, the clamping disc is preliminarily adjusted to the diameter similar to that of the steel pipe column, the 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, the height of the cross rod 24 changes, and therefore the X-shaped supporting rod 4 is driven to change synchronously. Because two hydraulic stems are by a motor control, so the height and the width of four X type bracing pieces are synchronous variation, prevent that the asynchronous phenomenon from appearing and leading to the steel-pipe column unbalance even drop. Preliminarily estimate the steel pipe size, the length of control hydraulic pressure pole makes the width between the member close with the steel pipe diameter, and at this moment, the relative position of big rectangular pipe 17 and little rectangular pipe 20 also can change thereupon for horizontal base 8 is in suitable length, makes the interval of X type bracing piece 4 just accord with the diameter of steel pipe.
4) Using a crane, the steel pipe column is placed on the pulleys 3 and passed through the holes of the clamping discs 1. The length of the hydraulic rod is adjusted by observing the fitting degree of the X-shaped support rod and the steel pipe column until the steel pipe column is fixed on the X-shaped support rod and does not move. Tightening the fixing bolt 18, the length of the transverse base 8 and the hydraulic rod 25 will not change. The height of the hydraulic telescopic table 22 is adjusted so that two sections of steel pipes are horizontally placed on the X-shaped support rod 4 and the disc support 9.
5) The handle 16 is released and fine adjustments are made so that the blades grip the steel tube. At this time, the steel pipe joints at the two ends are flush, the nuts are screwed tightly, the handle 16 is locked, the inner diameter of the clamping disc does not change any more, and the steel pipe pairing is completed. If the connectors at the two ends are not flush, the handles 16 of the two clamping disks can be respectively adjusted until the connectors are flush.
6) After the ports are level, workers may stand on the ground or on scaffolding to perform the welding. 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. Because the ball is placed on the disc support, the clamping device can rotate in the state of keeping the pipe orifice of the steel pipe parallel and level, the unwelded part is rotated to the position where a worker can conveniently operate, and welding is continuously carried out.
7) After the welding is completed, the handle 16 is released, and the welded steel pipe is taken out from one end.
Therefore, the device is used for positioning the steel pipe column, the round steel pipe column can be fixed, two steel pipes to be welded are folded and fixed together to be assembled, subsequent welding operation is carried out, and the device is suitable for steel pipe columns with different diameters and high in 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211092183.5A CN115625472A (en) | 2022-09-07 | 2022-09-07 | Circular steel pipe column welding positioning device and positioning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211092183.5A CN115625472A (en) | 2022-09-07 | 2022-09-07 | Circular steel pipe column welding positioning device and positioning method thereof |
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| CN115625472A true CN115625472A (en) | 2023-01-20 |
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| CN202211092183.5A Pending CN115625472A (en) | 2022-09-07 | 2022-09-07 | Circular steel pipe column welding positioning device and positioning method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275751A (en) * | 2023-05-04 | 2023-06-23 | 宁津美华工业有限公司 | Fire control sprays pipeline installation auxiliary assembly |
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2022
- 2022-09-07 CN CN202211092183.5A patent/CN115625472A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275751A (en) * | 2023-05-04 | 2023-06-23 | 宁津美华工业有限公司 | Fire control sprays pipeline installation auxiliary assembly |
| CN116275751B (en) * | 2023-05-04 | 2023-08-25 | 宁津美华工业有限公司 | Fire control sprays pipeline installation auxiliary assembly |
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