A PCCP pipe skeleton forming device

Abstract

This application discloses a PCCP pipe skeleton forming device, comprising: a steel cylinder with an opening; multiple fixed frames spaced apart, the steel cylinder mounted on the fixed frames; two centering wheels rotatably mounted on the fixed frames, spaced apart; a welding structure; and a ceramic liner disposed on the inner side of the steel cylinder, located at the opening. During the steel cylinder forming process, the steel cylinder is placed with the opening facing upwards between the two centering wheels of the fixed frames to initially fix the steel cylinder and ensure stable welding. The ceramic liner is adhered to the inner side of the steel cylinder and located below the opening. The welding structure forms a weld seam above the opening. The ceramic liner can achieve good penetration and forming effect even with single-sided welding, ensuring weld strength. This structure effectively reduces weld length and increases weld strength, thereby improving the overall strength of the steel cylinder.

Description

Technical Field

[0001] This application relates to the field of PCCP pipe skeleton forming technology, and in particular to a PCCP pipe skeleton forming device. Background Technology

[0002] PCCP pipes are water pipes made by winding circumferential prestressed steel wires around a high-strength concrete core with a steel cylinder, and then spraying a dense cement mortar protective layer on top. It is a composite pipe material composed of thin steel plates, high-strength steel wires, and concrete, fully and comprehensively utilizing the tensile strength and sealing properties of steel and the compressive strength and corrosion resistance of concrete, resulting in high sealing performance, high strength, and high impermeability. The steel cylinder forms the skeleton structure of the PCCP pipe.

[0003] In existing technologies, the forming of steel cylinders relies on spiral welding technology, but the weld seam formed by spiral welding technology is too long, which affects the strength of the steel cylinder.

[0004] Therefore, it is necessary to propose a PCCP pipe skeleton forming device to reduce the length of the weld, which has become an important technical problem that needs to be solved urgently. Utility Model Content

[0005] This application provides a PCCP pipe skeleton forming device, which aims to solve the problem that the weld seam formed by the spiral rolling welding technology in the prior art is too long, which affects the strength of the steel cylinder.

[0006] To achieve the above objectives, this application proposes a PCCP pipe skeleton forming device, comprising: a steel cylinder with an opening; multiple fixed frames spaced apart, the steel cylinder being mounted on the fixed frames; two centering wheels rotatably mounted on the fixed frames, spaced apart; a welded structure; and a ceramic liner disposed on the inner side of the steel cylinder, the ceramic liner being located at the opening.

[0007] In some embodiments, the device further includes: a positioning element, which is movably disposed on the fixed frame, and the steel cylinder is provided with a positioning hole adapted to the positioning element; and a fixed seat, which is connected to the positioning element and is mounted on the fixed frame.

[0008] In some embodiments, the ceramic gasket includes: an adhesive tape bonded to the inner side of the steel cylinder; and a ceramic block adapted to fit the welding bevel at the opening of the steel cylinder.

[0009] In some embodiments, the welding structure includes: a base; a movable stage movably disposed on the base; a robotic arm disposed on the movable stage; and a welding head disposed on the robotic arm.

[0010] In some embodiments, the welded structure further includes:

[0011] A dovetail slider is mounted on the moving platform.

[0012] The dovetail slide rail is set on the base, and the dovetail slider is adapted to the dovetail slider.

[0013] In some embodiments, the welded structure further includes:

[0014] Mobile driver, the mobile driver is set on the mobile station;

[0015] A rack, which is mounted on the base;

[0016] Gears, gears connect to drive movement, gears mesh with racks.

[0017] This application proposes a PCCP pipe skeleton forming device, comprising: a steel cylinder with an opening; multiple fixed frames spaced apart, with the steel cylinder mounted on the fixed frames; two centering wheels rotatably mounted on the fixed frames, spaced apart; a welding structure; and a ceramic liner disposed on the inner side of the steel cylinder at the opening. During the steel cylinder forming process, the steel cylinder is placed with the opening facing upwards between the two centering wheels of the fixed frames to initially fix the steel cylinder and ensure stable welding. The ceramic liner is adhered to the inner side of the steel cylinder and located below the opening. The welding structure forms a weld seam above the opening. The ceramic liner can achieve good penetration and forming effect even with single-sided welding, ensuring weld strength. This structure effectively reduces weld length and increases weld strength, thereby improving the overall strength of the steel cylinder. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a PCCP pipe skeleton forming device according to an embodiment of this application;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0021] Figure 3 for Figure 1 Enlarged view of a section B in the middle;

[0022] Figure 4This is a left view of a PCCP pipe skeleton forming device according to an embodiment of this application;

[0023] Figure 5 for Figure 4 Enlarged view of a section in the middle C;

[0024] Figure 6 for Figure 4 Sectional view at EE;

[0025] Figure 7 for Figure 6 A magnified view of part D in the middle.

[0026] In the diagram: 1. Base; 2. Moving platform; 3. Robotic arm; 4. Welding head; 5. Steel cylinder; 51. Welding bevel; 6. Fixing frame; 7. Centering wheel; 8. Mounting seat; 9. Dovetail slider; 10. Dovetail slide rail; 11. Rack; 12. Support bearing; 13. Adhesive tape; 14. Ceramic block; 15. Positioning component; 16. Fixing seat; 17. Threaded hole. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0031] See Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, this application proposes a PCCP pipe skeleton forming device, including: a steel cylinder 5 with an opening; multiple fixing frames 6 spaced apart, with the steel cylinder 5 mounted on the fixing frames 6; two centering wheels 7 rotatably mounted on the fixing frames 6, spaced apart; a welded structure; and a ceramic gasket disposed on the inner side of the steel cylinder 5, with the ceramic gasket located at the opening.

[0032] The steel cylinder 5 is formed by winding a steel plate using a rolling machine. After the steel cylinder 5 is wound, an opening is formed, and the opening needs to be welded to form a complete steel cylinder 5. Multiple fixing frames 6 are used to support the steel cylinder 5. Each fixing frame 6 is equipped with two rotatable centering wheels 7 at intervals. The two centering wheels 7 can effectively limit the left and right sway of the steel cylinder 5 and ensure the stability of the welding process.

[0033] In this embodiment, both ends of the centering wheel 7 are provided with support bearings 12, and the support bearings 12 are connected to the fixing frame 6 by screws. The centering wheel 7 is rotatably mounted on the fixing frame 6 through the support bearings 12.

[0034] The ceramic gasket is adhered to the inner side of the steel cylinder 5, located below the opening. As a backing for the weld, the ceramic gasket prevents molten iron from penetrating and forming a weld when it reaches the gasket. Thus, the ceramic gasket not only prevents molten iron penetration but also improves the sealing performance of the weld. The welding structure is used to weld and form a weld at the opening.

[0035] Specifically, during the forming process of the steel cylinder 5, the steel cylinder 5 is placed with its opening facing upwards between the two centering wheels 7 of the fixing frame 6 to initially fix the steel cylinder 5 and ensure the stability of the welding process. A ceramic gasket is adhered to the inner side of the steel cylinder 5, located below the opening. The welding structure is used to form a weld bead on the upper side of the opening. The ceramic gasket can achieve good penetration and forming effect even in single-sided welding, ensuring the strength of the weld. Through this structure, the weld length can be effectively reduced and the weld strength increased, thereby improving the overall strength of the steel cylinder 5.

[0036] See Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, the system further includes: a positioning element 15, which is movably mounted on the fixing frame 6; a positioning hole adapted to the positioning element 15 is provided on the steel cylinder 5; a through hole for the positioning element 15 to pass through is provided on the fixing frame 6; and the positioning element 15 is movably mounted on the fixing frame 6. A fixing seat 16 is connected to the positioning element 15 and is mounted on the fixing frame 6. The fixing seat 16 is integrally formed with the positioning element 15, and a threaded hole 17 is provided on the fixing seat 16. The fixing seat 16 is fixed to the fixing frame 6 by bolts. When the positioning element 15 moves upward to insert into the positioning hole on the steel cylinder 5, and is then fixed by the fixing seat 16, the steel cylinder 5 is effectively fixed, ensuring the stable progress of the welding process.

[0037] In this embodiment, the positioning hole can be filled in during subsequent processing. The diameter of the positioning hole is small and has little impact on the overall strength of the steel cylinder 5.

[0038] See Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the ceramic gasket includes: an adhesive tape 13, which is bonded to the inner side of the steel cylinder 5; the adhesive tape 13 is selected as heat-absorbing pressure-sensitive aluminum foil tape; and a ceramic block 14, the opening of the steel cylinder 5 being provided with a welding bevel 51, the ceramic block 14 being adapted to the welding bevel 51. The ceramic block 14 is made of a ceramic material with high thermal stability, low friction, and good chemical stability. Before welding, the ceramic block 14 is precisely bonded to the lower side of the adjacent opening using the adhesive tape 13, the opening being provided with a welding bevel 51 to accommodate the ceramic gasket, ensuring that the ceramic material and the welding bevel 51 are tightly fitted without gaps or misalignment. The ceramic gasket can achieve good penetration and forming effect even with single-sided welding, ensuring the strength of the weld.

[0039] See Figure 1 , Figure 2 and Figure 4As shown, in some embodiments, the welding structure includes: a base 1; the base 1 and fixing frames 6 are spaced apart, and the direction of the spaced fixing frames 6 is parallel to the length direction of the base 1. Multiple mounting seats 8 are spaced apart at the bottom of the base 1 to connect the base 1 to an external structure and improve the stability of the base 1. A movable stage 2 is movably mounted on the base 1; the movable stage 2 can drive the robotic arm 3 and the welding head 4 to move to complete the welding of the entire opening. A robotic arm 3 is mounted on the movable stage 2; the robotic arm 3 refers to a high-precision, multi-input multi-output, highly nonlinear, and strongly coupled complex system. The robotic arm 3 can adjust the posture of the welding head 4 to perform or stop the welding operation. A welding head 4 is mounted on the robotic arm 3. The welding head 4 is used to complete the welding operation. The welding head 4 includes at least a welding power source, a welding torch, a wire feeding structure, and an auxiliary structure. The robotic arm 3 includes at least a base, a joint, a connecting rod, and a drive control system. The welding head 4 is the end effector of the robotic arm 3. Since the welding head 4 and the robotic arm 3 are mature existing technologies and are not the core improvement points of this application, the specific structure of the welding head 4 and the robotic arm 3 is not limited here.

[0040] See Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the welding structure further includes: a dovetail slider 9, which is disposed on the moving stage 2; and a dovetail slide rail 10, which is disposed on the base 1, with the dovetail slider 9 adapted to the dovetail slider 9. The cooperation between the dovetail slider 9 and the dovetail slide rail 10 improves the stability of the moving stage 2 and the accuracy of the moving direction.

[0041] See Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the welding structure further includes: a motion drive, which is disposed on the moving platform 2; a rack 11, which is disposed on the base 1; and a gear, which is connected to the motion drive and meshes with the rack 11. The motion drive is a motor, and the output shaft of the motion drive is connected to the gear shaft through a coupling. The gear is disposed on the gear shaft, and the motion drive drives the gear to rotate, thereby driving the moving platform 2 to reciprocate on the base 1.

[0042] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A PCCP pipe skeleton forming device, characterized in that, include: A steel cylinder (5) having an opening; Multiple fixing frames (6) are arranged at intervals, and the steel cylinder (5) is arranged on the fixing frames (6); Two centering wheels (7) are rotatably mounted on the fixed frame (6) and are spaced apart. Welded structure; A ceramic liner is disposed on the inner side of the steel cylinder (5) and the ceramic liner is located at the opening.

2. The PCCP pipe carcass forming apparatus according to claim 1, wherein Also includes: Positioning component (15), the positioning component (15) is movably disposed on the fixing frame (6), and the steel cylinder (5) is provided with positioning holes adapted to the positioning component (15); A fixed base (16) is provided, and the positioning element (15) is connected to the fixed base (16). The fixed base (16) is installed on the fixed frame (6).

3. The PCCP pipe carcass forming apparatus of claim 1 wherein, The ceramic gasket includes: Adhesive tape (13) is bonded to the inner side of the steel cylinder (5); The ceramic block (14) is provided with a welding bevel (51) at the opening of the steel cylinder (5), and the ceramic block (14) is adapted to the welding bevel (51).

4. The PCCP pipe former according to claim 1, wherein The welded structure includes: Base (1); Mobile platform (2), which is movably disposed on the base (1); Robotic arm (3), the robotic arm (3) is disposed on the mobile platform (2); Welding head (4), which is disposed on the robotic arm (3).

5. The PCCP pipe carcass forming apparatus of claim 4 wherein, The welded structure also includes: Dovetail slider (9), the dovetail slider (9) is disposed on the moving platform (2); A dovetail slide rail (10) is provided on the base (1), and a dovetail slider (9) is adapted to the dovetail slider (9).

6. The PCCP pipe former according to claim 4, wherein The welded structure also includes: A mobile drive is provided on the mobile station (2); A rack (11) is disposed on the base (1). A gear, which is connected to the motion drive, meshes with the rack (11).

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