Auxiliary device for welding outer opening of longitudinal seam of non-standard equipment

Abstract

The utility model belongs to the technical field of large-diameter cylinder type production, and particularly relates to an auxiliary device for welding a longitudinal seam outer opening of non-standard equipment, which comprises a base, a vertical rod, a holding clamp and a winch, the vertical rod is fixedly installed at the center of the top face of the base, the holding clamp is slidably connected in the length direction of the vertical rod, the winch is fixedly installed on the top face of the base, a steel wire rope is arranged at the output end of the winch, and the end, away from the winch, of the steel wire rope bypasses the top end of the vertical rod and extends downwards to be connected with the holding clamp. A pedestrian path is fixedly installed on the left side of the holding clamp, and an automatic welding machine is arranged on the pedestrian path. The device has the advantages that the movable operating platform can freely lift, the supporting rod is driven by the movable operating platform to move upwards to be in contact with the inner wall of the top end of the barrel, and the out-of-round phenomenon of the barrel can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of large-diameter cylindrical production technology; specifically, this utility model relates to an auxiliary device for welding the outer edge of the longitudinal seam of non-standard equipment. Background Technology

[0002] In the existing technology for on-site fabrication of large-diameter cylindrical non-standard equipment, after each wall panel of the cylinder is assembled, the longitudinal weld seam of the cylinder needs to be welded horizontally using submerged arc welding. During the welding process, temporary scaffolding is generally required for work at heights of 2 meters or more. Due to the rotation and assembly processes, the large non-standard equipment cylinder sections fabricated on-site require frequent hoisting and relocation. Using scaffolding for welding the longitudinal seam necessitates frequent erection and dismantling of the scaffolding, and the welding equipment for submerged arc welding also needs frequent handling, making the work very inconvenient for construction personnel, resulting in low welding efficiency and increased construction costs. The applicant's project, the second phase of the Alashan Tamusu Natural Alkali Development and Utilization Project of Inner Mongolia Boyuan Yingen Chemical Co., Ltd., involves a large amount of non-standard equipment fabrication and welding work (up to 8000 tons) for the alkali processing unit, with a tight schedule. To solve the welding tooling problem and accelerate the construction progress, and considering the characteristics of on-site fabrication and welding of large non-standard equipment, an auxiliary device for welding the outer opening of the longitudinal seam of the cylinder of large non-standard equipment has been invented. Utility Model Content

[0003] In view of this, the present invention provides an auxiliary device for welding the outer edge of the longitudinal seam of non-standard equipment, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objectives, this utility model provides an auxiliary device for welding the outer edge of longitudinal seams in non-standard equipment, comprising a base, a vertical pole, an automatic welding machine, a clamp, and a winch; the vertical pole is fixedly installed at the center of the top surface of the base, the clamp is slidably connected along the length of the vertical pole, the winch is fixedly installed on the top surface of the base, the output end of the winch is provided with a wire rope, the end of the wire rope away from the winch passes around the top of the vertical pole and extends downward to connect with the clamp, a pedestrian walkway is fixedly installed on the left side of the clamp, and the automatic welding machine is set on the pedestrian walkway.

[0005] In the auxiliary device for welding the outer edge of the longitudinal seam of non-standard equipment as described above, optionally, a lifting lug is fixedly installed at the end of the clamp away from the pedestrian passage, and the end of the wire rope away from the winch is fixedly connected to the lifting lug.

[0006] In the aforementioned auxiliary device for welding the outer edge of longitudinal seams of non-standard equipment, optionally, a support member is fixedly installed on the upright, the support member is located below the clamp, and the support member is used to limit the minimum height of the clamp.

[0007] In the auxiliary device for welding the outer edge of the longitudinal seam of non-standard equipment as described above, optionally, pulleys are rotatably installed on both sides of the top end of the upright, and the wire rope is wound around the two pulleys in sequence.

[0008] In the aforementioned auxiliary device for welding the outer edge of longitudinal seams of non-standard equipment, optionally, a support rod is fixedly installed on the side of the clamp away from the pedestrian passage, and the support rod is located below the lifting lug.

[0009] In the aforementioned auxiliary device for welding the outer edge of longitudinal seams in non-standard equipment, optionally, a railing is provided above the pedestrian walkway.

[0010] This utility model discloses an auxiliary device for welding the outer edge of longitudinal seams in non-standard equipment. It uses a winch to drive the clamp to rise and fall on the upright, which enables the free lifting and lowering of the movable operating platform. Furthermore, by moving the operating platform, the support rod is moved upward and contacts the inner wall of the top of the cylinder, which can effectively prevent the cylinder from becoming out of round. Attached Figure Description

[0011] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Reference numerals in the attached diagram: 1. Base; 2. Winch; 3. Pedestrian walkway; 4. Guardrail; 5. Wire rope; 6. Pulley; 7. Upright; 8. Lifting lug; 9. Support rod; 10. Support component; 11. Automatic welding machine; 12. Clamping clamp. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] like Figure 1As shown, a typical embodiment of this utility model provides an auxiliary device for welding the outer edge of the longitudinal seam of non-standard equipment, including a base 1, a pole 7, an automatic welding machine 11, a clamp 12, and a winch 2; the pole 7 is fixedly installed at the center of the top surface of the base 1, the clamp 12 is slidably connected in the length direction of the pole 7, the winch 2 is fixedly installed on the top surface of the base 1, the output end of the winch 2 is provided with a wire rope 5, the end of the wire rope 5 away from the winch 2 passes around the top of the pole 7 and extends downward to connect with the clamp 12, a pedestrian passage 3 is fixedly installed on the left side of the clamp 12, and the automatic welding machine 11 is set on the pedestrian passage 3.

[0016] When in use, first use the operation button to lower the movable operating platform of the auxiliary device to 1 / 2 of the diameter of the non-standard equipment cylinder, so that the non-standard equipment cylinder can be positioned.

[0017] The equipment cylinder is placed horizontally on the base 1 using a crane. After the equipment cylinder is in place and fixed, the submerged arc automatic welding equipment is placed in the pedestrian walkway 3. During operation, the welding personnel also enter the pedestrian walkway 3 and start the winch 2, so that the pedestrian walkway 3, the automatic welding machine 11 and the clamp 12 are raised and lowered in the height direction of the upright 7 under the pulling force of the winch 2.

[0018] The equipment cylinder is made of composite steel plate with δ=4+22 material, consisting of S30403 and Q345R. The weld bevel is an "X" type. The 4mm stainless steel composite layer in the longitudinal seam of the cylinder is welded by manual arc welding, while the Q345R base layer is welded by submerged arc welding. After the materials arrive on site, the construction personnel perform the steel plate cutting, splicing, rolling and assembly procedures before proceeding to the equipment welding procedure.

[0019] The equipment cylinder consists of three longitudinal welds. After one weld is completed, the submerged arc automatic welding machine 11 is moved into the pedestrian passage 3, and personnel also enter the pedestrian passage 3. By operating the lifting device, the movable operating platform is lowered to 1 / 2 of the cylinder diameter. The cylinder is rotated using hoisting machinery to adjust the next weld to a vertically upward welding position. The above steps are repeated to complete the welding of the three longitudinal welds of the cylinder.

[0020] This reduces the need for repeated erection and dismantling of welding scaffolding, avoids frequent up-and-down movement of operators on scaffolding, and eliminates the need for repeated handling of welding equipment, effectively improving welding efficiency, shortening the construction period, and saving construction costs.

[0021] The end of the clamp 12 away from the pedestrian walkway 3 is fixedly equipped with a lifting lug 8, and the end of the wire rope 5 away from the winch 2 is fixedly connected to the lifting lug 8.

[0022] The wire rope 5 is connected to the lifting lug 8, which allows the wire rope 5 to drive the lifting lug 8 to move, so that the clamp 12 can rise and fall in the height direction of the upright 7. At the same time, the upright 7 is designed as H-shaped and rigidly welded to the crossbeam of the base 1. There is a 20mm gap between the clamp 12 and the upright 7 to facilitate up and down movement under the force of the winch 2.

[0023] A support member 10 is fixedly installed on the upright 7. The support member 10 is located below the clamp 12 and is used to limit the minimum height of the clamp 12.

[0024] Both sides of the top of the pole 7 are rotatably equipped with pulleys 6, and the steel wire rope 5 is wound around the two pulleys 6 in sequence.

[0025] The pulley 6 is designed to reduce friction between the wire rope 5 and the pole 7 when the wire rope 5 moves, allowing the wire rope 5 to more easily drive the clamp 12 to rise and fall on the pole 7.

[0026] A support rod 9 is fixedly installed on the side of the card holder 12 away from the pedestrian passage 3, and the support rod 9 is located below the lifting lug 8.

[0027] The strut 9 is made of H-beam steel and is welded to the clamp 12. The connection part is equipped with reinforcing ribs to form a rigid whole.

[0028] When using a crane to place the equipment cylinder horizontally on the base 1, the longitudinal axis of the equipment is parallel to the support rod 9, and the length of the support rod 9 is slightly greater than the length of the equipment cylinder, extending 200mm beyond the end of the cylinder.

[0029] Place the cylinder weld seam to be welded parallel to the support rod 9. The longitudinal weld seam of the cylinder should be vertically upward to facilitate the welding operation of the submerged arc automatic welding machine 11.

[0030] The support rod 9 is located below the weld seam inside the cylinder. Due to its own weight, the cylinder will sag vertically, causing its horizontal diameter to be larger than its vertical diameter. The support rod 9 is used to adjust the ellipticity error during welding and to eliminate welding stress. When the support rod 9 contacts the cylinder steel plate, it continues to rise slowly while measuring the vertical diameter of the cylinder until the ellipticity of the cylinder meets the requirements. The rise then stops. The support rod 9 prevents the cylinder from becoming out of round during welding and improves welding accuracy.

[0031] A railing 4 is installed above the pedestrian walkway 3.

[0032] The installation of railing 4 can prevent workers from falling during construction.

[0033] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. An auxiliary device for longitudinal seam outer mouth welding of non-standard equipment, characterized in that, Including base (1), stand (7), automatic welding machine (11), embrace card (12) and hoist (2), the stand (7) fixed installation is in the center at the top surface of base (1), the embrace card (12) is slidably connected in the length direction of stand (7), the hoist (2) is fixedly installed on the top surface of base (1), the output of hoist (2) is equipped with steel wire rope (5), the end of steel wire rope (5) away from hoist (2) is wound over the top end of stand (7), and extends downward and is connected with embrace card (12), the left side of embrace card (12) is fixedly installed with walkway (3), and automatic welding machine (11) is arranged on walkway (3).

2. An apparatus for assisting in the welding of a longitudinal seam external joint of a non-standard device as defined in claim 1, wherein, The end of the embrace card (12) away from the walkway (3) is fixedly installed with a lifting lug (8), and the end of the steel wire rope (5) away from the hoist (2) is fixedly connected with the lifting lug (8).

3. An auxiliary device for longitudinal seam outer mouth welding of non-standard equipment according to claim 1 or 2, characterized in that, The stand (7) is fixedly installed with a support (10), the support (10) is located below the embrace card (12), and the support (10) is used to limit the lowest height of the embrace card (12).

4. An apparatus for assisting in the welding of a longitudinal seam external joint of a non-standard device as defined in claim 3, wherein, The top end of the stand (7) is rotatably installed with a pulley (6) on both sides, and the steel wire rope (5) is sequentially wound on the two pulleys (6).

5. An auxiliary device for longitudinal seam outer mouth welding of non-standard equipment according to claim 1 or 4, characterized in that, The side of the embrace card (12) away from the walkway (3) is fixedly installed with a support rod (9), and the support rod (9) is located below the lifting lug (8).

6. An apparatus for use in the longitudinal seam outside beading of non- standardized equipment as defined in claim 5, characterized in that, The top of the walkway (3) is provided with a handrail (4).

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