Rotary prewelding equipment for variable-gauge arc-shaped plate

Abstract

The application discloses a rotating pre-welding equipment for variable-gauge arc-shaped plates, which comprises a fixed annular frame, a plurality of gauge adjusting oil cylinders are uniformly distributed on the circular frame of the fixed annular frame, a pair of walking tracks fixedly connected to a rack are arranged on the rear side of the fixed annular frame, a closing annular frame and a moving annular frame are sequentially arranged on the walking tracks, a plurality of detachable conveying roller tracks are further arranged between the closing annular frame and the moving annular frame, a plurality of conveying roller tracks are further arranged on the front side of the detachable conveying roller tracks, a fixed lifting roller track is arranged at the front end of the walking tracks, a moving lifting roller track is arranged at the rear end of the walking tracks, the fixed lifting roller track and the moving lifting roller track are installed at the midspan position of the pair of walking tracks, a cross beam is further arranged above the midspan position, a pressing block and a welding device longitudinally moving on the cross beam are further arranged on the cross beam, and a supporting mechanism is hingedly connected to the front end of the cross beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining equipment, in particular to a rotating pre-welding equipment for variable-specification arc-shaped plates. BACKGROUND

[0002] A cylindrical body is generally formed by processing equipment by rolling, correcting and welding rectangular plates. Due to the difference between the structures of a conical cylinder and a cylindrical cylinder, large conical tower cylinder structure buildings such as wind turbine columns and chimneys are usually processed and formed by processing equipment to preform the fan-shaped plates into conical cylinders. The utilization rate of fan-shaped plates is lower than that of rectangular plates. Large-scale fan-shaped plate processing equipment needs to be specially customized, and the plate rolling equipment cannot process special specification plates. On the other hand, with the continuous promotion of the national green industry, large-scale high-energy-consumption building structures are being gradually replaced. Large conical tower cylinder structure buildings can utilize the thickness variation characteristics of longitudinal variable-thickness steel plates to directly change the formed cylindrical body into a conical body. Under the premise of ensuring performance, the use of materials is less, and the processing and manufacturing are simpler. The special cross section can meet the different weight reduction design requirements of steel structures such as ships and bridges, and can also reduce manufacturing costs and improve structural safety. Traditional processing equipment does not have a rotating function, and multi-welded pipe cannot be formed at one time. Especially for large-scale semicircular plates and special specification fan-shaped plates, it is especially difficult to process plates with different thicknesses and length directions and different plate widths at both ends. SUMMARY

[0003] The present application aims to provide a rotating pre-welding equipment for variable-specification arc-shaped plates, which can weld large-scale semicircular or more circular arc segment plates into complete conical pipes, and is especially suitable for rolling, closing and welding plates with different thicknesses and length directions, different plate widths at both ends, and a whole flat surface in the shape of a fan. The present application solves the problems in the background technology.

[0004] In order to solve the above technical problems, the present application provides the following technical solutions:

[0005] The utility model provides a kind of rotating prewelding equipment for variable-gauge arc plate, including fixedly arranged on the frame fixed ring frame, several specification adjustment oil cylinders are uniformly distributed along the circular frame of fixed ring frame, a pair of parallel walking tracks are fixedly connected on the rear side of fixed ring frame, closing ring frame and moving ring frame are sequentially arranged on walking track, several detachable conveying roller beds are further arranged between closing ring frame and moving ring frame, and several conveying roller beds are further arranged on the front side of detachable conveying roller bed; the elevation of conveying roller bed is higher than that of detachable conveying roller bed; the front end of walking track is provided with fixed lifting roller bed, and the rear end is provided with moving lifting roller bed; fixed lifting roller bed and moving lifting roller bed are installed in the midspan of a pair of walking tracks; a crossbeam is further arranged above the midspan; a pressing block and a welding device longitudinally moving on the crossbeam are further arranged on the crossbeam; and a supporting mechanism is hingedly connected to the front end of crossbeam.

[0006] Preferably, the fixed ring frame is respectively provided with parallel multi-point clamping devices and rotating devices, the clamping devices are connected to the annular frame of the fixed ring frame by half-hinged shaft, the clamping devices are installed below the specification adjustment oil cylinders and are composed of multiple groups of parallel clamping cylinders, the clamping cylinders press the pipe blank and clamp it after the specification adjustment oil cylinders are adjusted to the right position, and the parallel structure of the clamping cylinders ensures uniform clamping force and is not affected by the thickness of the plate; then the motor of the rotating device is started, the specification adjustment oil cylinders are driven along the annular track by the force of the annular rack to rotate the clamping devices and the plate to the target position.

[0007] Preferably, the closing ring frame is provided with multiple groups of closing devices, the end of the closing device is provided with a roller structure type pressing beam, the closing device is connected to the closing cylinder by half-hinged shaft, the closing cylinder adjusts the stroke of the pressing cylinder synchronously according to the pipe diameter of the position of the pipe blank to close, adjusts the misaligned edges and inequality of the pipe material to the right position, and provides a certain pre-tightening force for welding.

[0008] Preferably, the moving ring frame is respectively provided with clamping devices and rotating devices.

[0009] Preferably, the center of the fixed ring frame, the closing ring frame and the moving ring frame coincides.

[0010] The beneficial effects of the utility model are as follows:

[0011] (1) The utility model adopts center positioning method, takes the fixed ring frame as reference, adjusts the position of the moving ring frame according to the length of the pipe blank, the closing ring frame walks and adjusts section by section according to the deformation of the pipe material, the extending cylinders on the three ring frames are adjusted in different directions individually or integrally along the center line, but the stroke of the adjusting cylinder of each ring frame is different according to the change of pipe taper, the parallel multi-point clamping devices on the two end ring frames are directly connected to the adjusting cylinder, to ensure balanced clamping force, and to preform the plate material of special specification efficiently.

[0012] (2) When the intermediate plate material is misaligned or needs to be corrected, the present application moves the eight-point folding structure to feed the arc-shaped plate material to the clamping area, the lifting roller way lifts the two ends of the plate material to different heights to make the center line coincide with the two ends of the ring-shaped frame, the adjacent two groups of clamping devices are moved to the appropriate position of the plate material edge and are pressed and clamped, then the two end rotating devices drive the arc-shaped plate material to rotate at an equal angle, which facilitates the transportation of the next plate material to the same position, and the same method is used until the last plate material is in place, then the specification adjustment oil cylinder is adjusted as a whole or individually, and the bevels of each arc-shaped plate material are aligned, and then the pipe blank after splicing is rotated at the same time to make one joint to the positive six-point direction, the welding device walks along the crossbeam direction following the pressing block to change the stroke welding until each joint is welded to form a tapered pipe, the whole process has high precision and high efficiency of tapered cylinder processing.

[0013] (3) In the present application, the pressing block and the welding device walk along the crossbeam direction, and the vertical direction extension amount linearly changes according to the pipe material edge trajectory and thickness during the walking process, so as to complete the pre-welding of the folding joint of the variable thickness plate.

[0014] (4) In the present application, the clamping devices at the corresponding positions of the fixed ring-shaped frame and the moving ring-shaped frame rotate at an equal angle after clamping the material, and each set contains multiple parallel oil cylinders, which can adapt to different pipe blank weights and pipe wall thicknesses.

[0015] (5) The rotating pre-welding equipment for the variable specification arc-shaped plate provided by the present application adopts the structure of the ring-shaped frame cooperating with the rotating device to pre-weld multiple circular arc pipe blanks into a whole tapered pipe, and has the advantages of compact and simple structure, stable operation, good satisfaction to the group welding forming of large specification arc-shaped plate material, high economic benefit and social value. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of a rotating pre-welding equipment for a variable specification arc-shaped plate of the present application;

[0017] Figure 2 is a top view of a rotating pre-welding equipment for a variable specification arc-shaped plate of the present application;

[0018] Figure 3 is Figure 1 A-A sectional view in the middle;

[0019] Figure 4 is Figure 3 I enlarged view in the middle.

[0020] In the figure: 1-clamping device; 2-fixed ring-shaped frame; 3-rotating device; 4-fixed lifting roller way; 5-pressing block; 6-welding device; 7-folding ring-shaped frame; 8-folding device; 9-walking track; 10-following lifting roller way; 11-moving ring-shaped frame; 12-supporting mechanism; 13-conveying roller way; 14-dismountable conveying roller way; 15-crossbeam; 16-specification adjustment oil cylinder. DETAILED DESCRIPTION

[0021] The application will be further described in detail below with reference to the accompanying drawings.

[0022] As Figures 1-4 shown in one variable-gauge arc-shaped plate rotary pre-welding equipment, including fixedly arranged on the frame of the fixed ring frame 2, along the fixed ring frame 2 circular frame evenly distributed with several gauge adjustment oil cylinders 16, the rear side of the fixed ring frame 2 is provided with a pair of parallel walking tracks 9 fixedly connected on the frame, the walking tracks 9 are sequentially provided with a folding ring frame 7 and a moving ring frame 11, a plurality of detachable conveying roller ways 14 are further arranged between the folding ring frame 7 and the moving ring frame 11, and a plurality of conveying roller ways 13 are further arranged on the front side of the detachable conveying roller ways 14; the conveying roller ways 13 have a height higher than that of the detachable conveying roller ways 14; the front end of the walking track 9 is provided with a fixed lifting roller way 4, and the rear end is provided with a moving lifting roller way 10; the fixed lifting roller way 4 and the moving lifting roller way 10 are installed at the midspan position of the pair of walking tracks 9, and a cross beam 15 is further arranged above the midspan position; the cross beam 15 is further provided with a pressing block 5 and a welding device 6 which longitudinally move on the cross beam 15; the cross beam 15 is hingedly connected with a supporting mechanism 12 at the front end; in addition, the center of the fixed ring frame 2, the folding ring frame 7 and the moving ring frame 11 coincide.

[0023] A plurality of parallel multi-point clamping devices 1 and rotating devices 3 are respectively arranged on the fixed ring frame 2 and the moving ring frame 11; the clamping device 1 is connected with the ring frame of the fixed ring frame 2 in a semi-hinge shaft mode; the clamping device 1 is installed below the gauge adjustment oil cylinder 16 and is composed of multiple groups of parallel clamping cylinders; after the gauge adjustment oil cylinder 16 is adjusted to the right position, the clamping cylinder presses and clamps the pipe blank; the parallel structure of the clamping cylinder ensures that the clamping force is uniform and is not affected by the thickness of the plate; then the motor of the rotating device 3 is started, and the gauge adjustment oil cylinder 16 drives the clamping device 1 and the plate to rotate to the target position through the circular rack force.

[0024] A plurality of folding devices 8 are arranged on the folding ring frame 7, and the folding device 8 is provided with a roller structure type pressing beam at the end; the folding device 8 is connected with the folding oil cylinder in a semi-hinge shaft mode; the folding oil cylinder adjusts the stroke of the pressing oil cylinder synchronously according to the pipe diameter of the position of the pipe blank to fold, adjusts the misaligned edges and inequality of the pipe material to the right position, and provides a certain pre-tightening force for welding.

[0025] The working process of the application is as follows:

[0026] The present application is to group weld a plurality of large-scale arc-shaped plate into a complete conical pipe. After the fan-shaped variable-thickness plate passes various inspections and the qualified products pass the edge milling process, the pre-bending process and the forming process, the arc-shaped pipe blank which meets the group welding forming is conveyed to the pre-welding equipment by the feeding roller way. According to the actual pipe specification, the partially interfering detachable conveying roller 14 is removed in advance. The moving ring-shaped frame 11 is moved to the appropriate position and locked by the walking track 9 according to the plate length. The closing ring-shaped frame 7 is also moved to closely contact the moving ring-shaped frame 11 by the walking track 9. The supporting mechanism 12 is in the falling position. The clamping device 1 and the closing device 8 are both in the retracted state. The pressing block 5 and the welding device 6 are moved to the initial point of the moving ring-shaped frame 11 and are in the retracted state by the cross beam 15. The fixed lifting roller way 4, the follow-up lifting roller way 10, the conveying roller way 13 and the detachable conveying roller way 14 are in the same feeding plane. The specification adjustment oil cylinder 16 on the fixed ring-shaped frame 2 and the moving ring-shaped frame 11 is adjusted to the respective control stroke according to the pre-calculated value. The rotating device 3 is moved to the upper position. The plate is conveyed to the control range between the fixed ring-shaped frame 2 and the moving ring-shaped frame 11. At this time, the fixed lifting roller way 4 and the follow-up lifting roller way 10 respectively lift the pipe to make it consistent with the center line of the fixed ring-shaped frame 2 and the moving ring-shaped frame 11. Then, the two groups of adjacent clamping devices 1 corresponding to the fixed ring-shaped frame 2 and the moving ring-shaped frame 11 are rotated to two points below the pipe and are pressed and clamped. Subsequently, they are rotated upward at an equal angle to allow the next pipe to be conveyed to the position. The fixed lifting roller way 4 and the follow-up lifting roller way 10 are lowered to the original material feeding plane. The same conveying method is used until the subsequent pipe conveying is completed and the entire conical tower is formed. At this time, the supporting mechanism 12 is lifted and locked to stabilize the end of the cross beam 15. The specification adjustment oil cylinder 16 of the two groups of ring-shaped frames is adjusted again. If necessary, single local adjustment is performed until the welding seams are balanced and the overall shape meets the forming standard. The rotating device 3 on the fixed ring-shaped frame 2 and the moving ring-shaped frame 11 is rotated again to make the pipe welding seam below. Then, the closing device 8 on the closing ring-shaped frame 7 is extended in multiple directions to correct the irregular part of the pipe. When the correction reaches the set low pressure, the clamping device 1 is released to a certain value. The closing device 8 is corrected to the position and is pressure maintained at high pressure. At the same time, the pressure of the clamping device 1 is increased to the original set value. At this time, the pressing block 5 is extended to press the welding seam of the two plates. At the same time, the welding device 6 is extended to the direction of the cross beam 15 to perform variable rail welding. The rail change amount is determined by the conical pipe slope and the pipe thickness. After a section of welding seam is completed, the closing device 8 is loosened and moved to the position to be corrected by the walking track 9. The low-pressure supporting of the closing ring-shaped frame 7, the pressure reduction of the two end clamping devices 1, the high-pressure correction of the closing ring-shaped frame 7 and the recovery of the original clamping high pressure of the two end clamping devices 1 are performed again. Then, the pressing block 5 and the welding device 6 complete the pre-welding of this section. The above conditions are repeated until the pre-welding of this welding seam is completed.Before the next weld starts pre-welding, the pressure block 5 and the welding device 6 retract and move to the end of the moving ring frame 11 along the beam 15, while the folding ring frame 7 also moves to the end of the moving ring frame 11 along the walking track 9, at this time the rotating device 3 on the fixed ring frame 2 and the moving ring frame 11 adjusts another weld to the same angular velocity to the position directly below, and the welding method is the same as the first weld, and so on, until the entire tapered pipe is pre-welded; finally, the fixed lifting roller way 4 and the follow-up lifting roller way 10 are simultaneously extended to the respective material receiving stroke, the clamping device 1 is completely loosened, the pipe material completely falls to the lifting roller way, the moving ring frame 11 moves away by a certain value so that the pipe material is completely separated, and then the fixed lifting roller way 4 and the follow-up lifting roller way 10 drive the pipe material to fall back to the plane where the conveying roller way 13 and the detachable conveying roller way 14 are located, and the roller way runs to output the pipe material to the next process.

[0027] The rotating pre-welding equipment for variable-gauge arc-shaped plates provided by the present application adopts the structure of a ring frame cooperating with a rotating device to pre-weld multiple groups of circular arc pipe blanks into a whole tapered pipe, and has the advantages of compact and simple structure, stable operation, good satisfaction of group welding forming of large-gauge arc-shaped plates, and high economic benefits and social values.

[0028] The above is only the preferred example of the present application, and it should be noted that for ordinary skilled persons in the art, under the technical inspiration provided by the present application, as the common knowledge in the field of hydraulic systems, other equivalent modifications and improvements can also be made, and should also be considered as the protection scope of the present application.

Claims

1. A rotary prewelding apparatus for variable-gauge arc plates, characterized by: The utility model relates to a pipe blank welding device, including fixed ring frame (2) fixedly arranged on the frame, a plurality of size adjustment oil cylinders (16) are uniformly distributed along the circular frame of fixed ring frame (2), the rear side of fixed ring frame (2) is provided with a pair of parallel walking tracks (9) fixedly connected on the frame, the walking track (9) is sequentially provided with closing ring frame (7) and mobile ring frame (11), a plurality of detachable conveying roller ways (14) are further arranged between closing ring frame (7) and mobile ring frame (11), a plurality of conveying roller ways (13) are further arranged on the front side of detachable conveying roller way (14), and the elevation of conveying roller way (13) is higher than that of detachable conveying roller way (14);The front end of walking track (9) is provided with fixed lifting roller way (4), and the rear end is provided with mobile lifting roller way (10), and fixed lifting roller way (4) and mobile lifting roller way (10) are installed in the midspan position of a pair of walking tracks (9), and the midspan position is further provided with crossbeam (15) above, and the crossbeam (15) is further provided with pressure block (5) and welding device (6) moving longitudinally on the crossbeam (15), and the front end of crossbeam (15) is hinged with support mechanism (12).

2. A rotary prewelding apparatus for variable-gauge arc plates according to claim 1, characterized in that: Parallel multi-point clamping device (1) and rotating device (3) are respectively arranged on the fixed ring frame (2), the clamping device (1) is connected between the ring frame of the fixed ring frame (2) in half hinged shaft type, the clamping device (1) is installed below the size adjustment oil cylinder (16) and is composed of multiple groups of parallel clamping cylinders, the pipe blank is clamped and pressure maintained by the pressure on the clamping cylinder after the size adjustment oil cylinder (16) is adjusted to the position, one end of the rotating device (3) is connected with the motor, and the other end is driven by the force of the ring gear to drive the clamping device (1) and the plate to rotate to the target position along the ring track of the size adjustment oil cylinder (16).

3. A rotating prewelding apparatus for variable-gauge arc plates according to claim 1 or 2, characterized in that: The closing device (8) is provided with a roller structure type pressing beam at the end, and the closing device (8) is connected with the closing cylinder in half hinged shaft type, and the closing cylinder adjusts the stroke of the pressing cylinder synchronously according to the pipe diameter of the position of the pipe blank to close.

4. A rotating prewelding apparatus for variable-gauge arc plates according to claim 3, characterized in that: The mobile ring frame (11) is respectively provided with clamping device (1) and rotating device (3).

5. A rotating prewelding apparatus for variable-gauge arc plates according to claim 4, characterized in that: The fixed ring frame (2), the closing ring frame (7) and the mobile ring frame (11) are coincident in center.

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