Auxiliary rolling device for large-diameter steel pipe

Abstract

The utility model relates to an auxiliary device for rolling a large-diameter steel pipe, which is applied to the steel pipe rolled on a plate rolling machine and comprises a support frame and a sliding piece, the support frame comprises vertical rods arranged at the front end and the rear end of the steel pipe and a cross rod fixed between the vertical rods, and the cross rod and the steel pipe are axially arranged above the plate rolling machine in parallel; a telescopic assembly extending towards the left side and the right side of the steel pipe is movably installed in the transverse rod, U-shaped clamps with outward openings are fixed to the two ends of the telescopic assembly, rotating shafts are movably installed in the U-shaped clamps, and the rotating shafts are in rolling connection with the inner walls of the left side and the right side of the steel pipe respectively. A vertical telescopic rod is fixedly installed at the upper end of the transverse rod, the top end of the telescopic rod is movably connected with a sliding piece, and a plurality of rollers in rolling connection with the inner wall of the upper side of the steel pipe are movably arranged at the upper end of the sliding piece. By means of the structure, longitudinal supporting and horizontal supporting are provided for the steel pipe in the steel pipe, and the steel pipe edge rolling effect is better; by adjusting the telescopic quantity of the telescopic assembly and the telescopic rod, the sliding piece and the rotating shaft can be attached to steel pipes with different diameters, and edge rolling supporting force is provided for the steel pipes; the rotating shaft and the roller of the device provide an arc-shaped moving track for the steel pipe, and the steel pipe rolling effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-diameter pipeline rolling, in particular to a large-diameter steel pipe rolling auxiliary device. Background Art

[0002] In industrial construction and metallurgical construction projects, there are many large-diameter dust removal pipes in new factory projects. Generally, there are no spot pipes with a diameter exceeding 2620mm in the market, and the transportation cost of large-diameter pipes is high after purchase. Therefore, steel plates are generally rolled into steel pipes at the construction site and then assembled into pipes; due to the large diameter and thin wall of the steel pipe, if there is no external force to support the steel plate during the rolling process, the upper end of the steel pipe is prone to collapse, and external force is needed to roll the steel plate into a round steel pipe. In order to solve this problem, the construction site usually uses a lifting robot arm to pull the steel pipe from above to make it gradually round; however, if there is no support force in the horizontal direction of the steel pipe, it is easy to roll the steel pipe into an elliptical shape instead of a round shape relying solely on the pulling force at the upper end. Utility Model Content

[0003] The utility model aims to solve the problem of poor rolling effect of large-diameter pipes in the prior art, thereby providing a large-diameter steel pipe rolling auxiliary device.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A large diameter steel pipe rolling auxiliary device is applied to steel pipes rolled on a plate rolling machine, comprising a support frame and a sliding member, wherein the support frame comprises vertical poles arranged at the front and rear ends of the steel pipe and a cross bar fixed between the vertical poles, and the cross bar is arranged above the plate rolling machine in parallel with the axial direction of the steel pipe;

[0006] A telescopic assembly extending to the left and right sides of the steel pipe is movably installed in the crossbar, and U-shaped clamps with outward openings are fixed at both ends of the telescopic assembly. A rotating shaft is movably installed in the U-shaped clamp, and the rotating shaft is respectively connected to the inner walls of the left and right sides of the steel pipe in a rolling manner;

[0007] A vertical telescopic rod is fixedly installed on the upper end of the crossbar, the top end of the telescopic rod is movably connected to a sliding member, and a plurality of rollers which are rollingly connected to the inner wall of the upper side of the steel pipe are movably arranged on the upper end of the sliding member.

[0008] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0009] 1) Through the above structure, longitudinal and horizontal support is provided for the steel pipe inside the steel pipe, so that the steel pipe rolling effect is better;

[0010] 2) By adjusting the telescopic amount of the telescopic assembly and the telescopic rod, the device can provide horizontal support force for steel pipes of different diameters;

[0011] 3) The rotating shaft and roller of the device provide an arc-shaped running track for the steel pipe, thereby increasing the rolling effect of the steel pipe.

[0012] As a preferred embodiment, a further technical solution of the utility model is:

[0013] The telescopic assembly consists of a sleeve and a threaded rod axially connected at both ends of the sleeve, and the outer end of the threaded rod is fixed to a U-shaped clamp; a horizontal opening is opened in the middle of the cross bar, and the sleeve is movably installed in the opening; the above-mentioned telescopic assembly has a simple structure, and the screw rods at both ends can be extended and retracted at the same time by rotating the sleeve in the opening, which is more convenient and quick to adjust.

[0014] The sliding member comprises a T-shaped steel, and a plurality of rollers are sleeved on the T-shaped steel at equal intervals; the rollers rotate when the steel pipe is rolled, thereby increasing the rolling effect of the steel pipe.

[0015] The vertical pole includes an upper vertical pole and a lower vertical pole, an externally threaded rod is fixed to the lower end of the upper vertical pole, an internally threaded sleeve is opened in the lower vertical pole, and the externally threaded rod and the internally threaded sleeve are threadedly connected; through the above structure, it is convenient to adjust the cross bar to the center line of the steel pipe, so that the telescopic assembly fixed in the cross bar can better support the farthest ends on both sides of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view schematic diagram of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the telescopic assembly of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the sliding member of the utility model;

[0020] In the figure: 1. sliding part; 11. T-shaped steel; 12. roller; 13. round steel; 14. lifting ear hole; 2. telescopic rod; 21. telescopic screw; 22. telescopic cylinder; 3. telescopic assembly; 31. sleeve; 32. threaded rod; 33. rotating shaft; 34. U-shaped clamp; 4. cross bar; 5. vertical rod; 51. upper vertical rod; 52. external threaded rod; 53. lower vertical rod; 6. steel pipe; 7. plate rolling machine. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0022] See attached Figure 1-4The utility model discloses a large-diameter steel pipe rolling auxiliary device, which is applied to the steel pipe 6 rolled on the plate rolling machine 7, and includes a support frame and a sliding member 1. The support frame includes vertical poles 5 arranged at the front and rear ends of the steel pipe and a cross bar 4 fixed between the vertical poles 5. The cross bar 4 is arranged above the plate rolling machine 7 in parallel with the axial direction of the steel pipe 6; a telescopic component 3 extending to the left and right sides of the steel pipe 6 is movably installed in the cross bar 4, and U-shaped clips 34 with outward openings are fixed at both ends of the telescopic component 3. A rotating shaft 33 is movably installed in the clamp 34; a bearing seat is fixed inside the clamping mouth of the U-shaped clamp 34, and the rotating shaft 33 is fixed to the inner ring of the bearing seat, so that the rotating shaft 33 can rotate under the clamping of the U-shaped clamp 34, and the rotating shafts 33 on both sides are respectively connected to the inner walls of the left and right sides of the steel pipe 6 in a rolling manner; a vertical telescopic rod 2 is fixedly installed on the upper end of the crossbar 4, and the top end of the telescopic rod 2 is movably connected to the sliding member 1, and a plurality of rollers 12 are movably provided on the upper end of the sliding member 1 to be connected to the inner wall of the upper side of the steel pipe 6 in a rolling manner. Through the above structure, the rotating shaft 33 and the rollers 12 provide multiple arc-shaped support points for the steel pipe 6, so that the steel pipe 6 can be rolled into a round shape better; through the telescopic assembly 3 and the telescopic rod 2, the device can be applied to steel pipes 6 of different diameters.

[0023] In this embodiment, the telescopic rod 2 includes a telescopic screw 21 and a telescopic tube 22. The telescopic screw 21 is movably connected to the telescopic tube 22. A nut is connected to the telescopic screw 21 to fix the position. The upper end of the telescopic screw 21 is connected to the bottom surface of the sliding member 1 through a bearing, and the lower end of the telescopic tube 22 is fixed to the cross bar 4. When in use, the telescopic screw 21 is rotated to change the telescopic amount of the telescopic screw 21 in the telescopic tube 22 to adjust the length of the telescopic rod 2.

[0024] In this embodiment, the vertical rod 5 and the cross rod 4 can be made of square tubes or round tubes made of metal by welding. The vertical rod 5 includes an upper vertical rod 51 and a lower vertical rod 53. An externally threaded rod 52 is fixed to the lower end of the upper vertical rod 51, and an internally threaded sleeve 53 is opened in the lower vertical rod 53. The externally threaded rod 52 and the internally threaded sleeve 53 are connected by threads. A bearing is fixed to the bottom surface of the upper vertical rod 51, and the outer ring of the bearing is fixed to the upper vertical rod 51. The upper end of the externally threaded rod 52 is inserted into the inner ring of the bearing and fixed, and the lower end of the lower vertical rod 53 is placed on the equipment foundation; by adjusting the position of the externally threaded rod 52 in the internally threaded sleeve 53, the cross rod 4 is driven to rise and fall, so that the cross rod 4 can be adjusted to the center line of the steel pipe 6, so that the telescopic component 3 fixed on the cross rod 4 can better support the left and right sides of the steel pipe 6.

[0025] As an option, the telescopic component 3 is composed of a sleeve 31 and a threaded rod 32 axially connected at both ends of the sleeve 31. Screw holes in the axial direction of the sleeve are opened at both ends of the sleeve 31, and the threaded rod 32 is rotatably set in the screw holes. Nuts are also sleeved on the threaded rod 32 on both sides of the bolt hole; the nuts are used to fix the threaded rod 32 and the sleeve 31 to make the horizontal supporting force more stable; a horizontal opening is opened in the middle of the cross bar 4, and the sleeve 31 is movably installed in the opening. Specifically, a bearing coaxial with the opening is fixed on the inner wall of the opening, and the sleeve is fixedly sleeved on the inner ring of the bearing; the structure of the telescopic component 3 is similar to that of the basket bolt, and the structure is simple. The threaded rod 32 at both ends can be telescoped and extended at the same time by rotating the sleeve 31 in the opening, so as to better adapt to the diameter adjustment of the steel pipe 6, and the adjustment is more convenient and quick.

[0026] In this embodiment, the sliding member 1 includes a T-shaped steel 11. When in use, the T-shaped steel 11 needs to be rotated 180 degrees. The T-shaped steel 11 can be welded and fixed using two angle steel side plates at the construction site, which further saves costs; a plurality of equally spaced grooves are provided at the upper end of the T-shaped steel 11, in which round steels 13 are fixed, and rollers 12 are sleeved on the round steels 13. The rollers 12 are annular hard steel structures, and a bearing structure is preferably used, so that the outer ring of the rollers 12 can rotate with the steel pipe 6, thereby increasing the rolling effect of the steel pipe 6; ear holes 14 are also provided at both ends of the T-shaped steel 11. When in use, the ear holes 14 can be connected by a mechanical arm to provide an upward pulling force for the steel pipe 6, so that the steel pipe 6 can be rolled more round. At the same time, after the rolling is completed, the steel pipe 6 can be hoisted to other storage rooms, saving the installation cost and hoisting cost of installing ears on the steel pipe 6 or using other hoisting equipment; the sliding member 1 has a simple structure and can be welded and fixed using scraps at the construction site, thereby saving costs.

[0027] When the device is used to assist in rolling the steel pipe 6:

[0028] Step 1: Place the plate rolling machine 7 on the ground, and fix a platform on both sides of the roller of the plate rolling machine 7, and the height of the platform is consistent with the height of the roller of the plate rolling machine 7;

[0029] Step 2: Place the vertical poles of the device at the front and rear ends of the plate rolling machine 7. According to the diameter of the steel pipe 6 to be rolled, first adjust the telescopic assembly 3, adjust the length between the outermost ends of the rotating shafts 33 on both sides to be consistent with the diameter of the steel pipe 6, tighten the nuts to fix the sleeve 31 and the threaded rod 32, so that it can provide maximum support force according to the diameter length of the steel pipe 6 during rolling;

[0030] Step 3, measure the height of the plate rolling machine 7, adjust the height of the vertical pole 5, so that the height of the cross bar 4 fixed on the vertical pole 5 is adjusted to the radius of the steel pipe 6 plus the height of the plate rolling machine 7, and the cross bar 4 is on the center line of the steel pipe 6;

[0031] Step 4: Adjust the telescopic rod 2 so that the length from the crossbar 4 to the outermost end of the roller 12 of the sliding member 1 is equal to the radius of the steel pipe 6;

[0032] Step 5: The steel plate is placed on a platform on one side and slowly inserted into the roller of the plate rolling machine 7. Driven by the roller, the steel plate gradually curls and passes through the left rotating shaft 33, the upper roller 12 and the right rotating shaft 33 in sequence. When the two ends of the steel plate are close to each other, they are welded and fixed. At this time, the arc of the steel pipe 6 is slightly worse.

[0033] Step 6: Continue rolling. The steel pipe 6 gradually becomes round under the support and rolling of the rotating shaft 33 and the roller 12 until the steel pipe 6 is rolled into a perfect circle.

[0034] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A large diameter steel pipe rolling auxiliary device, applied to a steel pipe (6) rolled on a plate rolling machine (7), characterized in that: The invention comprises a support frame and a sliding member (1), wherein the support frame comprises vertical rods (5) arranged at the front and rear ends of a steel pipe and a cross rod (4) fixed between the vertical rods (5), and the cross rod (4) is arranged above a plate rolling machine (7) in parallel with the axial direction of the steel pipe (6); A telescopic assembly (3) extending toward the left and right sides of the steel pipe (6) is movably installed in the crossbar (4), and a U-shaped clamp (34) opening outward is fixed at both ends of the telescopic assembly (3). A rotating shaft (33) is movably installed in the U-shaped clamp (34), and the rotating shaft (33) is respectively connected to the inner walls of the left and right sides of the steel pipe (6) in a rolling manner; A vertical telescopic rod (2) is fixedly mounted on the upper end of the crossbar (4); the top end of the telescopic rod (2) is movably connected to a sliding member (1); and a plurality of rollers (12) are movably arranged on the upper end of the sliding member (1) and are rollingly connected to the upper inner wall of the steel pipe (6).

2. The large diameter steel pipe rolling auxiliary device according to claim 1, characterized in that: The telescopic assembly (3) is composed of a sleeve (31) and a threaded rod (32) axially connected at both ends of the sleeve (31), and the outer end of the threaded rod (32) is fixed to a U-shaped clamp (34); a horizontal opening is opened in the middle of the cross bar (4), and the sleeve (31) is movably installed in the opening.

3. The large diameter steel pipe rolling auxiliary device according to claim 1, characterized in that: The sliding member (1) comprises a T-shaped steel (11), and a plurality of rollers (12) are sleeved on the T-shaped steel (11) at equal intervals.

4. The large diameter steel pipe rolling auxiliary device according to claim 1, characterized in that: The vertical rod (5) comprises an upper vertical rod (51) and a lower vertical rod (53); an external threaded rod (52) is fixed to the lower end of the upper vertical rod (51); an internal threaded sleeve is provided in the lower vertical rod (53); and the external threaded rod (52) and the internal threaded sleeve are threadedly connected.

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