CN219562042U - Semi-automatic assembling clamp for cold box pipeline cylindrical shell section - Google Patents
Semi-automatic assembling clamp for cold box pipeline cylindrical shell section Download PDFInfo
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- CN219562042U CN219562042U CN202320753087.4U CN202320753087U CN219562042U CN 219562042 U CN219562042 U CN 219562042U CN 202320753087 U CN202320753087 U CN 202320753087U CN 219562042 U CN219562042 U CN 219562042U
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- cross beam
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- pipe
- pump plunger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a semi-automatic assembling clamp for a cold box pipeline cylindrical shell section, and belongs to the field of pressure pipelines. The set of alignment fixtures includes a bracket system and a hydraulic pump system. The upright posts are fixed between the upper cross beam and the lower cross beam, so that the upper cross beam, the lower cross beam and the upright posts form a frame with middle pipe cylinder sections. The base is perpendicular to the lower cross beam, and the base is provided with a ball for reducing the sliding friction force of the pipe cylinder section. And an anti-rolling wedge block for preventing the tube section from rolling over and rolling sideways is arranged at the joint of the lower cross beam and the upright post. The lower surface of the upper cross beam is fixedly provided with a hydraulic pump plunger, and the displacement output end of the hydraulic pump plunger is fixedly provided with a force transmission plate. The hydraulic pump plunger is connected with the hydraulic pump through an oil delivery pipe. The mechanical jacking is adopted for the jig for assembling instead of the manual jig, so that the problem of the round tube misalignment before welding of the tube section of the current cold box pipeline and the deformation condition after welding can be solved, the manufacturing procedures can be reduced, the manufacturing quality and the precision can be improved, the labor intensity of workers can be reduced, and the enterprise cost can be saved.
Description
Technical Field
The utility model belongs to the field of pressure pipelines, and particularly relates to a semi-automatic assembling clamp for a cold box pipeline cylinder section.
Background
In the field of pressure pipelines, most pipelines are round pipes, but in the raw material purchasing stage, most manufacturers purchase plates for the reasons of convenience in transportation and the like, roll the plates by a hydraulic press or a roller rolling machine to obtain pipeline shell section coarse materials, then perform longitudinal seam assembly, spot welding and welding on the pipeline shell section coarse materials, and finally re-round the pipeline shell sections meeting the roundness required by specifications.
The pipe section for the cold box pipe is different from the conventional pipe section. Due to special reasons such as a subsequent welding process, a straight area (about 1/20-1/30 of the circumference of the cylinder section) extends out of two sides of the butt joint position of the longitudinal joint at the top of the cylinder section of the cold box pipeline so as to ensure that two sides of the butt joint longitudinal joint plate are always positioned at the plate butt joint position, and stress concentration is avoided, so that a welding joint with excellent quality is obtained.
Because the materials and specifications of the cold box pipelines are the same and the pipelines are limited by the equipment performance of the hydraulic press, the roundness of the coiled pipeline cylinder section can only reach the approximate degree generally and cannot be directly molded. And because the original edge of the plate has high rigidity, the material rebounds after rolling, the rolling process precision is controlled poorly and the like, the rolled shell ring has the problem of longitudinal seam misalignment, which causes great difficulty in longitudinal seam welding of the cold box pipeline and can not obtain excellent longitudinal seam plate butt joint quality. If the problem is not solved, the shell ring is subjected to edge staggering during welding, and is repaired when light and scrapped when heavy.
In the prior art, after the rolling procedure is finished, the problematic pipe section is put into a roller rolling machine for multiple re-rounding to solve the problem of the wrong edges, and then longitudinal seam welding and re-rounding are carried out. In the method, the repeated re-rounding process by adopting the roller rounding machine is long in time consumption and low in completion degree, and because the area of the wrong edge position on the problematic pipe section is far smaller than the area without the wrong edge, the whole pipe section is re-rounded, so that great cost waste is caused. Multiple re-rounding of the tube sections in a roller coiler can also result in some loss of material properties.
Therefore, a pairing clamp for rolling the cold box pipeline cylinder section is needed at present, and the problem of the misalignment in the rolling process of the cold box pipeline cylinder section is solved.
Disclosure of Invention
The utility model aims to solve the problem of the round tube misalignment before welding of the pipe section of the cold box pipe at present and the deformation state of the pipe section in the subsequent welding process, and provides a semi-automatic assembly fixture for spot welding of the pipe section.
The specific technical scheme adopted by the utility model is as follows:
the utility model provides a semi-automatic assembling clamp for a cold box pipeline cylinder section, which comprises a bracket system and a hydraulic pump system.
The bracket system comprises a base, a stand column, an upper cross beam and a lower cross beam; the hydraulic pump system comprises a hydraulic pump plunger, a force transfer plate and a hydraulic pump.
The upright posts are respectively fixed between the two ends of the upper cross beam and the lower cross beam, so that the upper cross beam, the lower cross beam and the two upright posts form a frame with a middle pipe shell ring. The base is perpendicular to the lower cross beam, the upper surface of the base is used as a horizontal supporting surface for placing the pipe cylinder section and is flush with the upper surface of the lower cross beam, and balls for reducing the sliding friction force of the pipe cylinder section are distributed on the horizontal supporting surface. And anti-rolling wedges for preventing the tube section from turning and rolling are arranged at the joint of the lower cross beam and the two upright posts.
The lower surface of the upper cross beam is fixed with a hydraulic pump plunger. The displacement output end of the hydraulic pump plunger is provided with a force transmission plate for fixing the position of the longitudinal seam at the upper part of the pipe shell section. The hydraulic pump plunger is connected with the hydraulic pump through an oil delivery pipe, and the hydraulic pump drives the hydraulic pump plunger to carry out telescopic displacement.
Preferably, the hydraulic pump plunger is fixed to the lower surface of the upper cross member by welding.
Preferably, the force transmission plate is fixed to the displacement output end of the hydraulic pump plunger by welding.
Preferably, the area of the force transmission plate is larger than the cross section of the lower surface of the hydraulic pump plunger.
Further, the length of the contact surface of the force transfer plate and the pipe section in the horizontal direction is 1/20-1/30 of the circumferential length of the pipe section.
Preferably, a force receiving member for lifting the assembly jig is fixed to the upper surface of the upper cross member.
Further, the force receiving member is a lifting lug.
Preferably, the balls on the base are arranged in two rows, and the pipe cylinder section (1) can be arranged on the two rows of balls (2) to slide.
Preferably, the upper beam, the lower beam and the base are i-beams.
Preferably, the hydraulic pump is provided with a switch and a pressure digital display meter.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The semi-automatic assembling clamp for the cold box pipeline cylindrical sections provided by the utility model can be used for the welding process of the cold box pipeline cylindrical sections of aluminum or other nonferrous metals with different pipe diameters and different plate thicknesses (4-12 mm);
(2) According to the utility model, the force transmission plate is arranged on the bottom surface of the plunger of the hydraulic pump, so that a section of flat area exists at the butt joint position of the longitudinal joint at the top of the pipe section before welding so as to offset deformation after welding. By the method, the two sides of the butt joint longitudinal joint plate are always positioned at the butt joint position of the plates, stress concentration is avoided, so that a pipeline cylindrical section with excellent quality and meeting roundness requirements is obtained, and the subsequent re-rounding process is reduced;
(3) According to the utility model, the hydraulic pump plunger is adopted to push and replace manual assembly, and the problem of the staggered edges of the round tube can be solved in a local spot welding mode; the pair of clamps can reduce the manufacturing procedures, improve the manufacturing quality and precision, lighten the labor intensity of workers, save the enterprise cost and especially have obvious effect on mass operation.
Drawings
FIG. 1 is a schematic diagram of a semi-automatic pairing fixture for a cold box pipe shell ring according to the present embodiment;
FIG. 2 is a cross-sectional view of a pipe section;
in the figure: pipe shell section 1, ball 2, base 3, stand 4, lug 5, entablature 6, hydraulic pump plunger 7, biography power board 8, oil pipe 9, hydraulic pump 10, switch 11, bottom end rail 12, anti-roll wedge 13 and pressure digital display 14.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below. The technical features of the embodiments of the utility model can be combined correspondingly on the premise of no mutual conflict.
In the description of the present utility model, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected with intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
In a preferred embodiment of the present utility model, a semi-automatic pairing fixture for a cold box pipe shell ring is provided, and the specific structure thereof will be described in detail first. As shown in fig. 1, the semi-automatic pairing clamp for the cold box pipeline cylinder section mainly comprises a bracket system and a hydraulic pump system. The bracket system comprises a base 3, a stand column 4, an upper cross beam 6 and a lower cross beam 12, and the hydraulic pump system comprises a hydraulic pump plunger 7, a force transmission plate 8 and a hydraulic pump 10.
Two upright posts 4 are arranged between the upper beam 6 and the lower beam 12. The two upright posts 4 are welded on two sides between the upper cross beam 6 and the lower cross beam 12 respectively, so that the upper cross beam 6, the lower cross beam 12 and the two upright posts 4 form a frame with the middle part for placing the pipe shell section 1.
In order to place the pipe section 1 to be welded, a base 3 is required to be arranged at a position perpendicular to the direction of the lower cross beam 12, and the upper surface of the base 3 is used as a horizontal supporting surface for placing the pipe section 1 and is flush with the upper surface of the lower cross beam 12. The horizontal supporting surface of the base 3 is provided with balls 2 for reducing the sliding friction force of the pipe shell section 1. In order to facilitate that various pipe cylinder sections 1 can stably roll in place on the base 3, two rows of balls 2 with a certain interval can be arranged on the ball 2 on the base 3. The pipe shell ring 1 can be arranged on two rows of balls 2 to slide
Further, in order to prevent the pipe section 1 from rolling sideways during the forward and backward rolling process on the base 3, an anti-rolling wedge 13 needs to be provided at the junction of the lower cross beam 12 and the two upright posts 4. The side of the anti-rolling wedge block 13, which is close to the pipe cylinder section 1, is arc-shaped and can be matched with the radian of the pipe cylinder section 1.
The lower surface of the upper cross member 6 is fixed with a hydraulic pump plunger 7 by welding. The hydraulic pump plunger 7 is an important element in the hydraulic pump system and has the function of regulating the hydraulic system pressure. The hydraulic pump plunger is a piston, which is composed of a cylindrical piston and a piston rod, the piston rod is also provided with a plunger head, the plunger head is provided with a plunger plate, the plunger plate is provided with a hole, a plunger is arranged in the hole, and the plunger is used for controlling the pressure of a hydraulic system. The working principle of the hydraulic pump plunger is as follows: when the plunger head on the piston rod moves downwards, the hole on the plunger plate becomes smaller, and hydraulic oil flows into the hole on the plunger plate from the plunger head on the piston rod, so that the pressure of the hydraulic system can be controlled. When the plunger head on the piston rod moves upwards, the hole on the plunger plate can be enlarged, hydraulic oil can flow out of the hole on the plunger plate, and therefore the pressure of the hydraulic system can be reduced.
The displacement output end of the hydraulic pump plunger 7 is fixed with a force transmission plate 8 for fixing the longitudinal seam position at the upper part of the pipe cylinder section 1 in a welding mode. The area of the force transfer plate 8 is slightly larger than the area of the bottom surface of the hydraulic pump plunger 7.
Because the butt joint positions of the longitudinal joints of the plates need to be welded to form the pipe cylindrical section 1, in order to counteract welding residual deformation, a straight section of area extends out of two sides of the butt joint positions of the longitudinal joints at the tops of the pipe cylindrical sections of the cold box before welding to occupy about 1/20-1/30 of the circumference of the cylindrical section, so as to correspond to the deformation state after subsequent welding, and the welding method is particularly shown in fig. 2. Therefore, in the embodiment, the length of the contact surface of the force transmission plate 8 and the pipe section 1 in the horizontal direction is 1/20-1/30 of the circumferential length of the pipe section 1.
The hydraulic pump system is also provided with a hydraulic pump 10, and the hydraulic pump 10 is connected with the hydraulic pump plunger 7 through two oil delivery pipes 9. The hydraulic pump 10 is provided with a switch 11 and a pressure digital display 14. A pressure sensor is provided in the pressure digital display 14, and can measure the pressure applied to the pipe section 1 by the hydraulic pump plunger 7.
In order to realize the motorized adjustment of the position of the semiautomatic assembling clamp of the cold box pipeline cylinder section, a stressed member for lifting the assembling clamp is fixed on the upper surface of the upper cross beam 6. In this embodiment, the lifting lug 5 is fixed to the upper surface of the cross beam 6 by welding. It should be noted that other members may be provided in the actual device, and it is only necessary to be able to flexibly adjust the positions of the pair of jigs.
The specific working mode of the provided semi-automatic pairing clamp for the cold box pipeline cylindrical shell section is as follows:
in operation, the coiled pipe section 1 is placed on the base 3. The upper surface of the base 3 is used as a horizontal supporting surface for placing the pipe section 1, and two rows of balls 2 arranged on the horizontal supporting surface reduce friction force between the pipe section 1 and the base 3, so that the pipe section 1 can smoothly advance in the advancing direction.
When the position to be welded on the pipe section 1 is located below the hydraulic pump plunger 7, the advance is stopped. The hydraulic pump plunger 7 starts to eject, so that a force transfer plate 8 below the hydraulic pump plunger 7 is firmly propped against the plane of the upper part of the longitudinal seam of the pipe section 1, and the two sides of the longitudinal seam of the pipe section are assembled.
After the assembly is finished, spot welding is carried out on the corresponding position, and the height hf of the welding leg of the welding spot is kept to be 4-5 mm. The welding spots are firmly welded, and the distance is kept consistent. After the spot welding at the above position is completed, the hydraulic pump plunger 7 is retracted, the pipe cylinder section 1 advances forward for a certain distance, and the spot welding process is repeated until the spot welding of the longitudinal joint group of the whole pipe cylinder section 1 is completed.
The semi-automatic assembling clamp for the cold box pipeline cylinder sections can solve the problem of the round pipe misalignment before welding the cold box pipeline cylinder sections and the deformation condition after welding. The assembling clamp adopts mechanical jacking to replace manual assembling, so that the manufacturing procedures can be reduced, the manufacturing quality and precision can be improved, the labor intensity of workers can be reduced, the enterprise cost can be saved, and the effect is obvious especially in mass operation.
The above embodiment is only a preferred embodiment of the present utility model, but it is not intended to limit the present utility model. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present utility model. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the utility model.
Claims (10)
1. The semi-automatic assembling clamp for the cold box pipeline cylinder sections is characterized by comprising a bracket system and a hydraulic pump system;
the bracket system comprises a base (3), a stand column (4), an upper cross beam (6) and a lower cross beam (12); the hydraulic pump system comprises a hydraulic pump plunger (7), a force transmission plate (8) and a hydraulic pump (10);
the two ends of the upper cross beam (6) and the lower cross beam (12) are respectively fixed with an upright post (4), so that the upper cross beam (6), the lower cross beam (12) and the two upright posts (4) form a frame for placing a pipe cylinder section (1) in the middle; the base (3) is perpendicular to the lower cross beam (12), the upper surface of the base (3) is used as a horizontal supporting surface for placing the pipe cylinder section (1) and is flush with the upper surface of the lower cross beam (12), and balls (2) for reducing the sliding friction force of the pipe cylinder section (1) are distributed on the horizontal supporting surface; an anti-rolling wedge block (13) for preventing the tube section (1) from turning over and rolling sideways is arranged at the joint of the lower cross beam (12) and the two upright posts (4);
the lower surface of the upper cross beam (6) is fixed with a hydraulic pump plunger (7); a force transmission plate (8) for fixing the longitudinal joint position of the upper part of the pipe cylinder section (1) is arranged at the displacement output end of the hydraulic pump plunger (7); the hydraulic pump plunger (7) is connected with the hydraulic pump (10) through the oil delivery pipe (9), and the hydraulic pump (10) drives the hydraulic pump plunger (7) to perform telescopic displacement.
2. The semiautomatic pairing clamp for the cold box pipe sections according to claim 1, wherein the hydraulic pump plunger (7) is fixed to the lower surface of the upper cross beam (6) by welding.
3. The semiautomatic pairing clamp for cold box pipeline sections according to claim 1, characterized in that the force transfer plate (8) is fixed to the displacement output end of the hydraulic pump plunger (7) by welding.
4. Semi-automatic pairing clamp for cold box pipe sections according to claim 1, characterized in that the area of the force transfer plate (8) is larger than the lower surface section of the hydraulic pump plunger (7).
5. The semiautomatic assembling clamp for the pipe sections of the cold box according to claim 4, wherein the length of the contact surface of the force transfer plate (8) and the pipe sections (1) in the horizontal direction is 1/20-1/30 of the circumferential length of the pipe sections (1).
6. Semi-automatic pairing clamp for cold box pipeline sections according to claim 1, characterized in that the upper surface of the upper cross beam (6) is fixed with a force member for lifting the pairing clamp.
7. The semiautomatic pairing clamp for the sections of the cold box pipeline according to claim 6, characterized in that the stress member is a lifting lug (5).
8. The semiautomatic pairing clamp for the pipe sections of the cold box according to claim 1, wherein the balls (2) on the base (3) are arranged in two rows, and the pipe sections (1) can slide on the two rows of balls (2).
9. The semiautomatic assembling clamp for the tube sections of the cold box pipeline according to claim 1, wherein the upper cross beam (6), the lower cross beam (12) and the base (3) are I-beams.
10. The semiautomatic pairing clamp for the cold box pipeline sections according to claim 1, wherein a switch (11) and a pressure digital display meter (14) are arranged on the hydraulic pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753087.4U CN219562042U (en) | 2023-04-07 | 2023-04-07 | Semi-automatic assembling clamp for cold box pipeline cylindrical shell section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753087.4U CN219562042U (en) | 2023-04-07 | 2023-04-07 | Semi-automatic assembling clamp for cold box pipeline cylindrical shell section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219562042U true CN219562042U (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320753087.4U Active CN219562042U (en) | 2023-04-07 | 2023-04-07 | Semi-automatic assembling clamp for cold box pipeline cylindrical shell section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219562042U (en) |
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2023
- 2023-04-07 CN CN202320753087.4U patent/CN219562042U/en active Active
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