A penstock segment ring seam welding and transportation device

Abstract

The utility model discloses a pressure steel pipe hole segment annular seam welding and transportation device, comprising a transport trolley arranged on a track, and at least four groups of lifting roller support groups arranged along the track axis direction on both sides of the track, and a horizontal bottom plate is also arranged at the end of the track, and an annular seam welding assembly is arranged on the horizontal bottom plate; a top support bracket is respectively arranged on the front end and the rear end of the transport trolley; the top support bracket is an arc plate, the axis direction of the top support bracket is perpendicular to the track direction, and the top support bracket is fixed to the transport trolley through two first hydraulic cylinders arranged side by side below; the utility model device automatically welds the two pressure steel pipe segments through the annular seam, and then fixes them with the fixed pressure steel pipe segments by manual welding, effectively reducing the number of manual welding construction. At the same time, it also allows submerged arc welding and manual welding to be carried out simultaneously, shortening the construction period and reducing the construction cost.

Description

Technical Field

[0001] The utility model relates to the field of pressure steel pipe welding devices, in particular to a pressure steel pipe in-hole segment annular seam welding and transportation device. Background Art

[0002] During the construction of water conservancy and hydropower, it is often encountered that due to the limited space in the branch tunnel of the main power station, the penstock cannot be assembled outside the tunnel and then transported as a whole into the tunnel for installation and fixation. For this reason, the existing technology uses rails and rail trolleys to transport the penstock of a single section to the designated location, and then the construction personnel weld the single section of the penstock with the installed and fixed penstock.

[0003] During the actual construction process, due to the harsh environment and narrow space in the branch tunnel, it is difficult for construction workers to carry out the segmental annular welding and fixed installation welding process, making it difficult to ensure the overall installation efficiency of the pressure steel pipe.

[0004] Therefore, a penstock segment annular seam welding and transportation device is proposed to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is that under the condition of limited space in the existing branch tunnel, the overall transportation of the pressure steel pipe in the tunnel is difficult, and at the same time, there are great difficulties in the manual fixing welding and circumferential seam welding process, and it is difficult to ensure the overall installation efficiency of the pressure steel pipe.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows:

[0007] A penstock in-hole segmental annular seam welding and transportation device comprises a transportation trolley arranged on a track, and at least four lifting roller support groups arranged on both sides of the track and arranged along the track axis direction, a horizontal bottom plate is also arranged at the end of the track, and an annular seam welding assembly is arranged on the horizontal bottom plate;

[0008] A top support bracket is respectively provided on the front end and the rear end of the transport trolley; the top support bracket is an arc-shaped plate, the axis direction of the top support bracket is perpendicular to the track direction, and the top support bracket is fixed to the transport trolley through two first hydraulic cylinders arranged side by side below;

[0009] The lifting roller support assembly includes bases respectively arranged outside the two sides of the track, two second hydraulic oil cylinders arranged side by side are arranged on the base, a support seat is arranged on the second hydraulic oil cylinder, a mounting groove is opened in the support seat along the direction perpendicular to the axis of the track, and arc-shaped notch surfaces are arranged on the opposite sides of the mounting groove; and also includes two fixed pulleys fixed in the mounting groove, beyond the range of the arc-shaped notch surface, and arranged obliquely;

[0010] The circumferential seam welding assembly includes a hanging column arranged on a horizontal bottom plate, a cross brace extending horizontally toward the roller support group is provided at the end of the hanging column, a submerged arc welding trolley is hung at the end of the cross brace, and the submerged arc welding trolley is in contact with the wall of the pressure steel pipe section.

[0011] Particularly, the cross brace is located inside the pressure steel pipe.

[0012] Particularly, track wheels are provided at the bottom of the horizontal bottom plate.

[0013] Particularly, the hanging column is an electric push rod or a hydraulic cylinder.

[0014] Particularly, an oblique support rod fixedly connected to the horizontal bottom plate is provided at the bottom of the hanging column, and at least two oblique support rods are provided and evenly distributed on the circumference of the outer wall of the hanging column.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model uses a circumferential welding assembly to assemble and weld two pressure steel pipe sections in a branch hole, and then uses manual welding to fix and weld the installed pressure steel pipe sections, effectively reducing the number of manual welding constructions, reducing the construction difficulty and reducing the labor cost; at the same time, compared with the single-section transportation method, two sections can be transported at one time, effectively speeding up the transportation efficiency of the pressure steel pipe, and also allowing submerged arc welding and manual welding to be carried out simultaneously, shortening the construction period and reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a usage state diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the device of the utility model without a pressure steel pipe.

[0018] The meanings of the numbers in the figure are: transport trolley—1; lifting roller support assembly—2; horizontal base plate—3; annular seam welding assembly—4; top support bracket—5; first hydraulic cylinder—6; base—7; second hydraulic cylinder—8; support seat—9; mounting groove—10; fixed pulley—11; hanging column—12; cross brace—13; submerged arc welding trolley—14; diagonal brace—15. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought about.

[0020] like Figure 1~Figure 2As shown, a penstock in-hole segment annular seam welding and transportation device comprises a transport trolley 1 arranged on a track, and at least four groups of lifting roller support assemblies 2 arranged on both sides of the track and arranged along the track axis direction, a horizontal bottom plate 3 is also provided at the end of the track, and an annular seam welding assembly 4 is provided on the horizontal bottom plate 3;

[0021] A top support bracket 5 is provided on the front end and the rear end of the transport trolley 1 respectively; the top support bracket 5 is an arc-shaped plate, the axis direction of the top support bracket 5 is perpendicular to the track direction, and the top support bracket 5 is fixed to the transport trolley 1 through two first hydraulic cylinders 6 arranged side by side below;

[0022] The lifting roller support assembly 2 includes a base 7 respectively arranged outside the two sides of the track, two second hydraulic cylinders 8 arranged side by side are arranged on the base 7, and a support seat 9 is arranged on the second hydraulic cylinder 8. A mounting groove 10 is opened in the support seat 9 along a direction perpendicular to the axis of the track, and arc-shaped notch surfaces are arranged on the opposite sides of the mounting groove 10; and also includes two fixed pulleys 11 fixed in the mounting groove 10, beyond the range of the arc-shaped notch surface, and arranged obliquely;

[0023] The circumferential seam welding assembly 4 includes a hanging column 12 arranged on the horizontal bottom plate 3, and a cross brace 13 extending horizontally toward the roller support group is provided at the end of the hanging column 12. A submerged arc welding trolley 14 is hung at the end of the cross brace 13, and the submerged arc welding trolley 14 is in contact with the wall of the pressure steel pipe.

[0024] In the utility model, the main working process is as follows: in the pre-embedding work of the penstock in the whole tunnel, firstly, the penstock pipe section is hoisted to the top support bracket 5 on the transport trolley 1 by the hoisting equipment outside the tunnel, and the position of the penstock pipe section is fixed by the arc-shaped top support bracket 5. After the penstock pipe section is transported to the lifting roller support group 2 in the tunnel by the transport trolley 1, the first hydraulic cylinder 6 is lifted upward so that the penstock pipe section can pass over the lifting roller support group 2, and the transfer process of the penstock pipe section from the transport trolley 1 to the lifting roller support group 2 is completed by lifting the second hydraulic cylinder 8 and lowering the first hydraulic cylinder 6. The operation method of performing circumferential seam submerged arc welding for every two penstock pipe sections is adopted, and the penstock pipe section is fine-tuned by adjusting the height of the second hydraulic cylinder 8. After fine-tuning, the rotation speed of the lifting roller support group 2 and the speed of the submerged arc welding machine are adjusted to the same speed before welding begins. After the circumferential steel pipes are welded and assembled in the branch hole, the submerged arc welding machine is removed, and then the first hydraulic cylinder 6 is raised to support the pressure steel pipe and separate from the hydraulic roller, and then the two welded pressure steel pipe sections are transported to the previously installed pressure steel pipe by the transport trolley 1 for manual welding and fixing. The transport trolley returns and the above process is repeated.

[0025] As a preferred embodiment, the cross brace 13 is located inside the pressure steel pipe.

[0026] In this embodiment, by setting the cross brace 13 inside the pressure steel pipe, the submerged arc welding trolley 14 can perform circumferential seam submerged arc welding construction inside the pressure steel pipe, avoiding the problem that the hanging column 12 and the cross brace 13 cannot be installed during external welding due to the small internal space of the cavern.

[0027] As a preferred embodiment, track wheels are provided at the bottom of the horizontal bottom plate 3 .

[0028] In this embodiment, by setting track wheels at the bottom of the horizontal bottom plate 3, the submerged arc welding trolley 14 can adjust the submerged arc welding position according to the actual width of the pressure steel pipe section to adapt to the welding operations of pressure steel pipes of different specifications.

[0029] As a preferred embodiment, the hanging column 12 is an electric push rod or a hydraulic cylinder.

[0030] In this embodiment, the hanging column is set as a retractable structure such as an electric push rod or a hydraulic cylinder, so that the actual welding position of the submerged arc welding trolley 14 can be adjusted. If conditions permit, pressure steel pipe welding can be performed externally, thereby effectively ensuring the quality of submerged arc welding.

[0031] As a preferred embodiment, an oblique support rod 15 fixedly connected to the horizontal bottom plate 3 is provided at the bottom of the hanging column 12 , and at least two oblique support rods 15 are provided and evenly distributed on the circumference of the outer wall of the hanging column 12 .

[0032] In this embodiment, the diagonal support rods 15 are provided to support the hanging column 12, thereby preventing the hanging column 12 from being tilted during the submerged arc welding process, thereby affecting the submerged arc welding operation.

[0033] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0034] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A penstock in-hole segmental annular seam welding and transportation device, characterized in that: It comprises a transport trolley (1) arranged on a track, and also comprises at least four groups of lifting roller support assemblies (2) arranged on both sides of the track and arranged along the track axis direction, a horizontal bottom plate (3) is also provided at the end of the track, and a circumferential seam welding assembly (4) is provided on the horizontal bottom plate (3); A top support bracket (5) is respectively provided on the front end and the rear end of the transport trolley (1); the top support bracket (5) is an arc-shaped plate, the axis direction of the top support bracket (5) is perpendicular to the track direction, and the top support bracket (5) is fixed to the transport trolley (1) through two first hydraulic cylinders (6) arranged side by side below; The lifting roller support assembly (2) comprises a base (7) respectively arranged outside the two sides of the track, the base (7) is provided with two second hydraulic cylinders (8) arranged side by side, the second hydraulic cylinder (8) is provided with a support seat (9), the support seat (9) is provided with a mounting groove (10) opened in a direction perpendicular to the axis of the track, and the mounting groove (10) has arc-shaped notch surfaces on the opposite sides; and also comprises two fixed pulleys (11) fixed in the mounting groove (10), beyond the range of the arc-shaped notch surface, and arranged obliquely; The circumferential seam welding assembly (4) comprises a hanging column (12) arranged on a horizontal bottom plate (3); a cross brace (13) extending horizontally toward the roller support assembly is provided at the end of the hanging column (12); a submerged arc welding trolley (14) is hung at the end of the cross brace (13); and the submerged arc welding trolley (14) is in contact with the wall of the pressure steel pipe.

2. A penstock segmental annular seam welding and transportation device as claimed in claim 1, characterized in that: The cross brace (13) is located inside the pressure steel pipe.

3. A penstock segment ring seam welding and transportation device as claimed in claim 1, characterized in that: Track wheels are provided at the bottom of the horizontal bottom plate (3).

4. A penstock segmental annular seam welding and transportation device as claimed in claim 3, characterized in that: The hanging column (12) is an electric push rod or a hydraulic cylinder.

5. The penstock segment ring seam welding and transportation device as claimed in claim 1, characterized in that: The bottom of the hanging column (12) is provided with an oblique support rod (15) fixedly connected to the horizontal bottom plate (3), and at least two oblique support rods (15) are provided and are evenly distributed on the circumference of the outer wall of the hanging column (12).

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