CN113001081B

CN113001081B - Stiffening ring trolley

Info

Publication number: CN113001081B
Application number: CN202110140316.0A
Authority: CN
Inventors: 李贺威; 陈文善; 许文奎; 赵春莉; 王宗; 李金红; 段体倩
Original assignee: Sinohydro Engineering Bureau 4 Xiangyun Engineering Construction Co Ltd; Sinohydro Engineering Bureau 4 Lanzhou Machinery Equipments Co Ltd
Current assignee: Sinohydro Engineering Bureau 4 Xiangyun Engineering Construction Co Ltd; Sinohydro Engineering Bureau 4 Lanzhou Machinery Equipments Co Ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2024-05-07
Anticipated expiration: 2041-02-02
Also published as: CN113001081A

Abstract

The invention provides a stiffening ring trolley, wherein an arc-shaped track, a welding mechanism, a supporting device, a translation mechanism and a corresponding lifting mechanism are arranged at the upper part of the stiffening ring trolley, the arc-shaped track is matched with the outer diameter of a steel pipe, the welding mechanism walks on the arc-shaped track, stiffening ring pieces are welded on the steel pipe, the supporting device can support the stiffening ring pieces, the translation mechanism can drive the supporting device to translate, and the lifting mechanism can lift the stiffening ring pieces on the supporting mechanism. According to the stiffening ring trolley provided by the invention, the stiffening ring is fully round and halved to form six stiffening ring pieces, the stiffening ring pieces are placed on the stiffening ring piece supporting device, and the stiffening ring pieces are sequentially welded and formed on the outer wall of the steel pipe by virtue of the welding mechanism; six stiffening ring sheets can be loaded at a time when the stiffening ring is installed on the steel pipe, and the welding of the six stiffening rings into a circle is completed.

Description

Stiffening ring trolley

Technical Field

The invention relates to the technical field of engineering steel pipes, in particular to a stiffening ring trolley.

Background

At present, the inner diameter of a stiffening ring pipe of a large-size steel pipe is more than 3 meters, and when the stiffening ring is additionally arranged, a plurality of difficulties are faced, for example, the size of the stiffening ring is too large due to the oversized steel pipe, and the stiffening ring is additionally arranged, so that a plurality of difficulties are needed to be overcome.

Disclosure of Invention

In view of the above technical problems, the embodiment of the invention provides a stiffening ring trolley, which solves the problem of welding and forming of stiffening rings of large-size steel pipes with pipe diameters exceeding 3 meters by adopting a method of welding the stiffening rings into circles after rounding the stiffening rings into six equal parts sequentially.

The stiffening ring trolley is used for being arranged below a steel pipe to be welded with stiffening ring pieces and comprises two arc-shaped tracks which are radially arranged along the steel pipe and are matched with the outer diameter of the steel pipe, each arc-shaped track is provided with a welding mechanism which walks along the arc-shaped track, a bearing device for bearing the stiffening ring pieces is arranged between the two arc-shaped tracks, the bearing device can bear six stiffening ring pieces side by side and is driven by a translation mechanism, the bearing device can move between the two arc-shaped tracks along the axial direction of the steel pipe, two ends of the stiffening ring pieces are respectively provided with a lifting mechanism which can move along the vertical direction, the lifting mechanisms can be supported at the end parts of the stiffening ring pieces so as to upwards support the stiffening ring pieces, and welding heads of the welding mechanisms at two sides of the supported stiffening ring pieces are aligned with the inner arc edges of the stiffening ring pieces; the inner arc edge of the stiffening ring piece is matched with the outer diameter of the steel pipe.

The bottom of the stiffening ring trolley is provided with travelling wheels which are driven by a motor.

The arc-shaped track, the welding mechanism, the supporting device, the translation mechanism and the corresponding lifting mechanism are provided with two groups.

The lower part of the welding mechanism is driven by a roller mechanism to enable the welding mechanism to reciprocate along an arc-shaped track.

The translation mechanism comprises a track axially arranged along the steel pipe and a screw rod parallel to the track and connected with the supporting device in a matched mode.

The lifting mechanism comprises a vertical track and a lifting block which is driven by hydraulic pressure and moves along the vertical track; the supporting block is wedge-shaped, and the wedge-shaped surface is supported at the end of the stiffening ring piece.

According to the stiffening ring trolley provided by the invention, the stiffening ring is fully round and halved to form six stiffening ring pieces, the stiffening ring pieces are placed on the stiffening ring piece supporting device, and the stiffening ring pieces are sequentially welded and formed on the outer wall of the steel pipe by virtue of the welding mechanism; six stiffening ring sheets can be loaded at a time when the stiffening ring is installed on the steel pipe, and the welding of the six stiffening rings into a circle is completed.

Drawings

FIG. 1 is a schematic structural view (top view) of a first and second base of a circular knitting machine;

FIG. 2 is a schematic structural view (front view) of a first and second base of the calipers;

FIG. 3 is a schematic structural view (side view) of a first and second base of the calipers;

FIG. 4 is a schematic structural view (front view) of a stiffening ring pallet;

FIG. 5 is a schematic structural view (side view) of a stiffening ring pallet;

FIG. 6 is a schematic structural view (top view) of a stiffening ring pallet;

FIG. 7 is a schematic diagram (elevation) of the overall structure of a six-aliquotted steel pipe stiffener ring assembly device;

fig. 8 is a schematic diagram (side view) of the overall structure of the six-equal-divided steel pipe stiffening ring assembly device.

Detailed Description

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.

As shown in fig. 1-8, an embodiment of the present invention provides a six-equal-divided steel pipe stiffening ring assembly device, which includes a first roundness correction machine base 11, a second roundness correction machine base 12, and a stiffening ring trolley 20 at two ends, wherein: the first roundness correction machine base 11 and the second roundness correction machine base 12 are arranged in parallel, and the stiffening ring trolley 20 is arranged between the first roundness correction machine base 11 and the second roundness correction machine base 12; the first roundness correction machine base 11 and the second roundness correction machine base 12 are erected at two ends of the steel pipe 30, support is provided for the steel pipe 30, the steel pipe 30 is driven by a power mechanism to rotate, and the roundness correction of the steel pipe is completed in the rotating process; the stiffening ring trolley 20 can enter the lower part of the steel pipe 30 from the outside, stiffening ring pieces 31 are arranged on the stiffening ring trolley 20, and six stiffening ring pieces 31 which are divided into six parts are sequentially welded to the outer circumference of the steel pipe 30 through the action of the stiffening ring trolley, so that a whole circle is formed again.

The two ends of the first round correcting machine base 11 and the second round correcting machine base 12 are respectively provided with an upward-inclined lifting arm 13 which can lift and descend, the end part of the lifting arm 13 is provided with a roller 14 which is in rolling connection with the surface of the steel pipe 30, and the roller 14 is driven by a motor to drive the steel pipe 30 to rotate; the middle of the second round correcting machine base 12 is provided with a rolling shaft 15 which can be horizontally laid down and is connected with the middle of the first round correcting machine base 11, the rolling shaft passes through the inside of a steel pipe 30 and is in rolling connection with the inner wall of the steel pipe, two pressing wheels 16 (four pressing wheels are arranged on each base) which are arranged in an arc shape are respectively arranged on the first round correcting machine base 11 and the second round correcting machine base 12 at two sides of the rolling shaft 15 and are used for being supported on the outer wall of the steel pipe; the lifting arm 13 can support the steel pipe 30, and after the lifting arm 13 falls, the steel pipe 30 is connected with the pinch roller on the base, the rolling shaft 15 traverses the inside of the steel pipe 30 and is in rolling connection with the inner wall of the steel pipe, so that the rolling shaft 15 and the pinch roller 16 can correct the roundness of the steel pipe 30, and the roller 14 on the lifting arm 13 drives the steel pipe to rotate as a power device.

The stiffening ring trolley 20 is arranged below the rolling shaft 15, arc-shaped tracks 21 which are radially arranged along the steel pipe 30 and are matched with the outer diameter of the steel pipe 30 are arranged on the stiffening ring trolley 20, two groups of arc-shaped tracks 21 are arranged on each arc-shaped track 21, a welding mechanism 22 which runs along the arc-shaped track 21 is arranged on each arc-shaped track 21, a bearing device 23 which is used for bearing stiffening ring pieces 31 is arranged between the two arc-shaped tracks 21, six stiffening ring pieces 31 can be supported on the bearing device 23 side by side, the bearing device 23 is driven by a translation mechanism 25, the bearing device 23 can move between the two arc-shaped tracks 21 along the axial direction of the steel pipe 30, lifting mechanisms 24 which can move along the vertical direction are respectively arranged at two ends of the stiffening ring pieces 31, the lifting mechanisms 24 can be supported at the end parts of the stiffening ring pieces 31 so as to upwards support the stiffening ring pieces 31, and welding heads of the welding mechanisms 22 at two sides of the supported stiffening ring pieces 31 are aligned with the inner arc edges of the stiffening ring pieces 31; the inner arc edge of the stiffening ring piece 31 is adapted to the outer diameter of the steel pipe 30. The arc-shaped track 21 which is matched with the radian of the steel pipe 30 (the radian is unequal, but the circle centers of the arcs are overlapped) is utilized, so that the welding operation of the stiffening ring piece 31 can be completed in the process of moving the welding device 22 along the arc-shaped track 21; after welding of one stiffening ring piece 31 is completed, starting the roller 14 on the lifting arm 13 again to drive the steel pipe to rotate for 60 degrees, and finishing correction of roundness of the steel pipe by the rolling shaft 15 in the rotating process; then the supporting device 23 is moved by the translation mechanism 25 to align the next stiffening ring piece 31 with the lifting mechanism 24, so that the stiffening ring piece 31 is lifted by the lifting mechanism and is tightly attached to the outer wall of the steel pipe 30, and the welding device is started again to perform welding work along the arc-shaped track 21.

The rolling shaft 15 comprises an axle center and a shaft roller, one end of the axle center is rotationally connected with the hydraulic arm 17, so that the axle center can turn around the hydraulic arm 17, and the hydraulic arm 17 is connected with the middle part of the second round correcting machine base 12; the other end of the axle center is connected through a hydraulic connecting rod 18 in a detachable mode, and the hydraulic connecting rod 18 is connected with the middle part of the first roundness correction machine base 11. When the rolling shaft 15 works, the shaft center is fixed, the shaft roller is in rolling connection with the inner wall of the steel pipe 30, and the shaft roller rotates relative to the shaft center; during the rotation of the shaft roller, the roundness of the steel pipe is corrected by the supporting and correcting functions of the pressing wheel 16. The hydraulic arm 17 and the hydraulic connecting rod 18 are hydraulic devices, so that the pressing force between the rolling shaft 15 and the inner wall of the steel pipe can be controlled. The hydraulic arm 17 is an oil cylinder and a cylinder rod which are inclined on the rolling shaft, the rolling shaft 15 is controlled to turn over in the horizontal direction in a downward inclined pulling mode, the hydraulic connecting rod 18 is an oil cylinder and a cylinder rod which are arranged in the vertical direction, and the top end of the hydraulic connecting rod 18 is provided with a shaft sleeve structure connected with the rolling shaft 15, and the shaft sleeve structure can be opened and closed to realize connection or separation with the shaft end of the rolling shaft 15.

The lifting arm 13 is of a mechanical arm structure, one end of the installation roller 14 is a free end, and the other end is a fixed end, and is connected to the corresponding base in a torsionally manner. The lifting arm 13 can adopt complex mechanical arm transmission, can complete the supporting effect on the steel pipe, can swing up and down by itself simultaneously, thereby controlling the height of the steel pipe, and correspondingly, the mechanical arm can also adjust the supporting force on the steel pipe so as to drive the steel pipe to rotate.

The hydraulic arm 17 is arranged on the outer side of the second round-correcting machine base 12; the hydraulic link 18 is disposed outside the first calipers base 11. Accordingly, the length of the rolling shaft 15 is longer than the length of the steel pipe 30 so that both ends of the rolling shaft protrude outside the steel pipe 30.

The roller 14 and the pinch roller 16 are positioned on the same vertical plane.

The bottom of the stiffening ring trolley 20 is provided with travelling wheels 26, the travelling wheels 26 are driven by a motor, and a track for travelling by the travelling wheels is arranged between the first round correcting machine base 11 and the second round correcting machine base 12.

The arc-shaped track 21, the welding mechanism 22, the supporting device 23, the translation mechanism 25 and the corresponding lifting mechanism 24 are provided with two groups, so that the stiffening ring trolley 20 can weld two stiffening ring pieces 31 on the steel pipe 30 at the same time. Those skilled in the art will recognize that three or four sets of mechanisms may be provided to effect simultaneous welding of three or four stiffening ring sheets 31, as desired.

The lower part of the welding mechanism 22 is driven by a roller mechanism (not shown) so as to be capable of reciprocating along the arc-shaped rail 21. Typically, the roller mechanism is a roller mechanism that can be clamped on both sides of the arcuate track 21, or can roll along the arcuate track surface, while it is required to be able to accommodate the arcuate requirements of the arcuate track 21.

The translation mechanism 25 comprises a track axially arranged along the steel pipe and a screw parallel to the track and in matched connection with the bearing device 23. The translation mechanism is driven by a stepping motor, so that after welding of one stiffening ring piece 31 is completed each time, a preset stroke can be automatically fed to meet the requirement that the next stiffening ring piece 31 just falls into the bearing range of the lifting mechanism 24.

The lifting mechanism 24 includes a vertical rail and a hydraulically driven, lifting block that moves along the vertical rail; the supporting blocks are wedge-shaped, the wedge-shaped surface is supported at the end parts of the stiffening ring pieces 31, and the supporting blocks are also generally provided with self-aligned V-shaped groove structures, so that the end parts of the stiffening ring pieces 31 fall into the V-shaped grooves, and the stiffening ring pieces 31 are automatically aligned under the guidance of the V-shaped grooves to prevent deflection.

The invention equally divides the whole circle of the stiffening ring into six stiffening ring pieces, places the stiffening ring pieces on the stiffening ring piece supporting device, and welds and forms on the outer wall of the steel pipe in turn by means of a welding mechanism; six stiffening ring sheets can be loaded at a time when the stiffening ring is installed on the steel pipe, and welding of the six stiffening rings into a circle is completed; the rolling shaft is matched with the pressing wheel, so that the roundness of the steel pipe is ensured, and the roller on the lifting arm is driven to rotate.

Those skilled in the art will appreciate that the above-described embodiments are exemplary and not limiting. The different technical features presented in the different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in view of the description and the claims. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first," "second," and the like, are used for designating a name and not for indicating any particular order.

Claims

1. A stiffening ring trolley used under a steel pipe (30) of a stiffening ring piece (31) to be welded, which is characterized by comprising two groups of arc-shaped rails (21) which are radially arranged along the steel pipe (30) and are matched with the outer diameter of the steel pipe (30), wherein each arc-shaped rail (21) is provided with a welding mechanism (22) which walks along the arc-shaped rail (21), a bearing device (23) for bearing the stiffening ring piece (31) is arranged between the two arc-shaped rails (21), the bearing device (23) can bear six stiffening ring pieces (31) side by side, the bearing device (23) is driven by a translation mechanism (25), the bearing device (23) can move between the two arc-shaped rails (21) along the axial direction of the steel pipe (30), two ends of the stiffening ring piece (31) are respectively provided with a lifting mechanism (24) which can move along the vertical direction, the lifting mechanism (24) can bear the end parts of the stiffening ring piece (31) so as to bear the stiffening ring piece (31) upwards, and the stiffening ring piece (31) can bear the stiffening ring piece (31) and the stiffening ring piece (31) to be welded in the welding arc of the stiffening ring (31); the inner arc edge of the stiffening ring piece (31) is matched with the outer diameter of the steel pipe (30).

2. The stiffening ring trolley of claim 1 wherein,

The bottom of the stiffening ring trolley (20) is provided with a travelling wheel (26), and the travelling wheel (26) is driven by a motor.

3. The stiffening ring trolley of claim 1 wherein,

The arc-shaped track (21), the welding mechanism (22), the supporting device (23), the translation mechanism (25) and the corresponding lifting mechanism (24) are provided with two groups.

4. The stiffening ring trolley of claim 1 wherein,

The lower part of the welding mechanism (22) is driven by a roller mechanism to enable the welding mechanism to reciprocate along the arc-shaped track (21).

5. The six-part steel pipe stiffening ring assembly device of claim 1, wherein,

The translation mechanism (25) comprises a track which is axially arranged along the steel pipe and a screw which is parallel to the track and is in matched connection with the bearing device (23).

6. The six-part steel pipe stiffening ring assembly device of claim 1, wherein,

The lifting mechanism (24) comprises a vertical rail and a lifting block which is driven by hydraulic pressure and moves along the vertical rail; the supporting blocks are wedge-shaped, and the wedge-shaped surfaces are supported at the end parts of the stiffening ring pieces (31).