Special rolling machine for oil and natural gas pipelines
A technology of oil and gas and plate rolling machine, which is applied in the field of plate rolling machine, can solve the problems such as the purse mouth of rolled products, and achieve the effects of increasing safety, effectively using space, and facilitating the discharge of finished products
Inactive Publication Date: 2010-09-22
南通盛利重工机械制造有限公司
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Problems solved by technology
However, due to the influence of the deformation of the upper roller when rolling the super long cylinder, the ordinary three-roller or four-roller plate rolling machine has a purse mouth phenomenon in the finished product.
Method used
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[0008] Reference Figure 1-2 This specific implementation adopts the following technical solutions: it is composed of a bracket 1, a piston rod 2, an oil cylinder block 3, an upper roller pressing wheel 4, an upper roller 5, a balance oil cylinder 6 and a lower roller 7, and an oil cylinder is provided on the support 1. The cylinder block 3 is connected with the piston rod 2. The upper roller 4 is arranged under the cylinder block 3, the upper roller 5 is arranged under the upper roller 4, and the lower roller 7 is arranged under the upper roller 5. A balancing cylinder 6 is provided at the lower right of the lower roller 7.
[0009] Oil cylinders are arranged above both ends of the upper roller 5, and the oil cylinders are used for pressure.
[0010] The lower roller 7 is an idler roller.
[0011] In this specific embodiment, the pressure at both ends of the upper roller is pressurized by an oil cylinder, the piston rod of the oil cylinder is fixed, and the cylinder body is lowere...
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The invention provides a special rolling machine for oil and natural gas pipelines, which relates to a rolling machine. The rolling machine comprises a bracket (1), a piston rod (2), an oil cylinder body (3), an upper roller pressing wheel (4), an upper roller (5), a balance oil cylinder (6) and a lower roller (7), wherein the oil cylinder body (3) is arranged on the bracket (1); the oil cylinder body (3) is connected with the piston rod (2); the upper roller pressing wheel (4) is arranged below the oil cylinder body (3); the upper roller (5) is arranged below the upper roller pressing wheel (4); the lower roller (7) is arranged below the upper roller (5); and the balance oil cylinder (6) is arranged at the bottom right part of the lower roller (7). A three-roller rolling machine is used, a supporting roller is used as the lower roller, and a reverse deformation method is used by the upper roller to eliminate the deflection deformation of the rollers in the rolling process; and an oil cylinder pressurizing mode is adopted at two ends of the upper roller, thereby effectively utilizing the space, increasing the utilization ratio of materials, greatly lowering the weight of overall equipment, having no need of turning over and resetting the bracket, and increasing the safety.
Description
Technical field: [0001] The invention relates to a plate rolling machine, in particular to a special plate rolling machine for oil and natural gas pipelines. Background technique: [0002] At present, the domestic production method for slender pipelines such as oil and natural gas is basically multi-step pressing by the press JCOE method, which generally has disadvantages such as slow speed, poor pressing accuracy (multi-segment arc), and large equipment investment. The rounding and straightening procedures are added during the operation, which is cumbersome to operate, occupies a large plant area, and has a long input-output cycle. In particular, the production line is obviously restricted by the plant layout. On the other hand, ordinary three-roll or four-roller plate bending machine is affected by the deformation of the upper roll when the super long cylinder is rolled, and the rolled product has a purse-string phenomenon. Summary of the invention: [0003] The purpose of the...
Claims
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IPC IPC(8): B21D5/12
Inventor 谢友国张广勤
Owner 南通盛利重工机械制造有限公司