An automatic rounding inner support device and rounding method for large-diameter pressure steel pipes

Abstract

This invention relates to the field of pipeline construction technology, and in particular to an internal support and automatic rounding device for large-diameter pressure steel pipes. It comprises a traveling device, a support and rounding device, and a control device. The traveling device moves back and forth inside the steel pipe; the radial extension and curvature change of the contact surface of the support and rounding device complete the internal support and rounding of the steel pipe; after setting the pipe diameter, the control device controls the support device to complete the internal support and rounding fixture; the control device controls the traveling device to drive the entire system's back and forth movement. This invention overcomes the problems of difficult assembly and disassembly of internal support fixtures for large-diameter pressure steel pipes in confined spaces, limited internal operating space, difficult operation, difficult fixture movement, and cumbersome operation. It features simple structure, high support efficiency, high degree of intelligence, and large operating space.

Description

Technical Field

[0001] This invention belongs to the field of pipeline construction technology, and in particular relates to an automatic rounding inner support device and rounding method for large-diameter pressure steel pipes. Background Technology

[0002] During the construction of pumped storage projects, large-diameter pressure steel pipes are generally used for water transmission pipelines. Currently, the construction of these pipes in pumped storage projects typically involves externally disassembling the pipes into sections and assembling them inside the tunnel. Internal support frames and rounding fixtures are then manually erected. This method not only requires a significant investment of manpower and resources but also makes it difficult to guarantee standardization, quality, safety, and schedule. Furthermore, the limited space within the large-diameter pressure steel pipe also presents challenges in disassembling and assembling the internal support fixtures, including limited operating space and cumbersome procedures, which remain to be addressed. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic rounding inner support device and rounding method for large-diameter pressure steel pipes, which has the characteristics of simple structure, high support efficiency, high degree of intelligence and large operating space.

[0004] The technical solution adopted in this invention is as follows:

[0005] An automatic rounding inner support device for a large-diameter pressure steel pipe includes a traveling device, a support rounding device, and a control device. The traveling device is located below the support rounding device and includes a frame, at least two sets of traveling wheels mounted on the frame and driven by a power source, and at least one telescopic folding support rod connecting the frame and a central support. The support rounding device includes a central support, a plurality of radial hydraulic telescopic rods arranged circumferentially around the central support, and an arc-adjustable support surface installed at the outer end of each radial hydraulic telescopic rod. The control device includes an oil pump, an industrial control computer, and a battery installed in the central support. The industrial control computer is equipped with a remote control. The oil pump is connected to the telescopic folding support rod, the radial hydraulic telescopic rod, and the arc-adjustable support surface through a hydraulic distributor and pipelines. The oil pump, the hydraulic distributor, and the power source are all electrically connected to the industrial control computer.

[0006] Preferably, the arc-adjustable support surface includes a hydraulic actuating cylinder and left and right rods symmetrically hinged to its outer ends. The left and right rods maintain a distance at the hinge and both bend toward the hydraulic actuating cylinder. The top rod of the hydraulic actuating cylinder is hinged to the ends of the bent sections of the left and right rods.

[0007] Preferably, the outer sides of both the left and right rods are formed with arc surfaces.

[0008] Preferably, the telescopic folding support rod includes an upper connecting rod, a folding arm, and a lower connecting rod connected in sequence. The folding arm is driven by a hydraulic cylinder, the upper connecting rod is connected to the central support via a thread, and the lower connecting rod is connected to the vehicle frame.

[0009] A method for adjusting a circle, characterized by comprising the following steps:

[0010] S1, the walking device is arranged at the bottom inside the large-diameter pressure steel pipe;

[0011] S2, transport the support and adjustment device into the large-diameter pressure steel pipe and connect it with the walking device;

[0012] S3, bind the control device with the walking device and the support adjustment device, adjust the length of the telescopic folding support rod, and make the central support of the support adjustment device center on the axis of the large-diameter pressure steel pipe;

[0013] S4, the control device sets the length of the radial hydraulic telescopic rod of the support adjustment device and the curvature of the support surface according to the inner diameter of the large-diameter pressure steel pipe.

[0014] S5, when the arc-adjustable support surface contacts the inner wall of the steel pipe, the telescopic folding support rod of the walking device begins to retract;

[0015] S6, check the fit between the adjustable support surface and the inner wall of the steel pipe until it is adjusted to the allowable error range, then stop the rounding operation of the support rounding device. At this time, the support and rounding operation of the inner wall of the large-diameter pressure steel pipe is completed.

[0016] S6, the control device controls the telescopic folding support rod to start extending, and when the traveling wheel contacts the pipe wall, the radial hydraulic telescopic rod and the support rounding device start to retract;

[0017] S7, the control device controls the walking device to move forward to the next ring, and begins the next round of support and adjustment operation.

[0018] The beneficial effects of this invention are as follows: Under the control of the control device, the invention can move to different positions for support and adjustment via a walking device. The combination of radial hydraulic telescopic rod and arc-adjustable support surface can adapt to steel pipes of different diameters. The structure is simple, and the overall structure is a splicing and assembly structure, which is convenient for disassembly and assembly. It has a high degree of intelligence, and workers do not need to perform manual operations inside the support device. The operating space is large and convenient, effectively reducing labor intensity. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the automatic rounding inner support device provided by the present invention.

[0020] Figure 2 A schematic diagram of the structure supporting the rounding device.

[0021] Figure 3 This is a schematic diagram of the walking device.

[0022] Figure 4 This is a schematic diagram of the telescopic folding support rod; the hydraulic cylinder is omitted in the diagram.

[0023] Figure 5 This is a partial structural diagram of the adjustable curvature support surface.

[0024] The diagram includes: 1. Walking device; 11. Frame; 12. Walking wheels; 13. Power source; 14. Telescopic folding support rod; 141. Upper connecting rod; 142. Folding arm; 143. Lower connecting rod; 2. Support adjustment device; 21. Central support; 22. Radial hydraulic telescopic rod; 23. Curvature adjustable support surface; 231. Left rod; 232. Right rod; 233. Bending section; 234. Hydraulic actuator; 235. Top rod; 31. Remote control; 32. Battery; 33. Industrial control computer; 34. Oil pump; 35. Hydraulic distributor; 36. Pipeline; 4. Large diameter pressure steel pipe. Detailed Implementation

[0025] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figure 1 As shown, the present invention provides an automatic rounding inner support device for a large-diameter pressure steel pipe, comprising a traveling device 1, a support rounding device 2, and a control device.

[0028] like Figure 3 As shown, the walking device 1 is located below the supporting and adjusting device 2, and includes a frame 11, two sets of walking wheels 12 mounted on the frame 11 and driven by a power source 13, and one or two telescopic and folding support rods 14 connecting the frame 11 and the central support 21. The frame 11 is a frame-type structure composed of uprights and crossbars, similar in structure to a fastener scaffold. The uprights and crossbars are detachable, and the operating height of the frame 11 is adjustable. The power source 13 is typically an electric motor. Figure 4As shown, the telescopic folding support rod 14 includes an upper connecting rod 141, a folding arm 142, a lower connecting rod 143, and a hydraulic cylinder driven by an oil pump 34, which are connected in sequence. The folding arm 142 can be telescopically extended by the hydraulic cylinder. The upper connecting rod 141 is threaded, and the lower connecting rod 143 is connected to the frame 11.

[0029] like Figure 2 As shown, the supporting adjustment device 2 includes a hexagonal central support 21, five radial hydraulic telescopic rods 22 arranged circumferentially around the central support 21, and an adjustable arc support surface 23 installed at the outer end of each radial hydraulic telescopic rod 22. The bottom of the central frame 11 is threadedly connected to the upper connecting rod 141 through a screw hole. Each radial hydraulic telescopic rod 22 is arranged along the radius of the circumcircle of the central support 21. The control device includes an oil pump 34 (driven by a motor), an industrial control computer 33, a battery 32, and a hydraulic distributor 35 installed in the central support 21. The industrial control computer 33 is also equipped with a remote control 31, which is wirelessly connected to the control computer. The oil pump 34 is connected to the telescopic folding support rod 14, the radial hydraulic telescopic rods 22, and the adjustable arc support surface 23 through the hydraulic distributor 35 and pipes 36, providing hydraulic pressure to the telescopic folding support rod 14, the radial hydraulic telescopic rods 22, and the adjustable arc support surface 23. The motors of the oil pump 34, hydraulic distributor 35, and power source 13 are all electrically connected to the industrial control computer 33 and are under its unified control. The oil pump motor is powered by an external cable, while the hydraulic distributor 35, industrial control computer 33, and power source 13 are powered by a storage battery 32.

[0030] like Figure 5 As shown, the adjustable support surface 23 includes a hydraulic cylinder 234 and left rods 231 and right rods 232 symmetrically hinged to its outer ends. The inner end of the hydraulic cylinder 234 is fixed to the outer end of the radial hydraulic telescopic rod 22, and is connected to the hydraulic distributor 35 through a pipe 36, and is driven by an oil pump 34. The outer sides of both the left rod 231 and right rod 232 are curved. The left rod 231 and right rod 232 maintain a distance at the hinge and both bend towards the hydraulic cylinder 234. The top rod 235 of the hydraulic cylinder 234 is hinged to the ends of the bent sections 233 of the left rod 231 and right rod 232. When the top rod 235 of the hydraulic cylinder 234 extends or retracts, the left rod 231 and right rod 232 swing around the hinge point, which can achieve an arc adjustment within a certain range.

[0031] The present invention also provides a method for adjusting the circle based on the above-mentioned automatic circle-adjusting inner support device, comprising the following steps:

[0032] S1, the walking device 1 is arranged at the bottom inside the large-diameter pressure steel pipe 4;

[0033] S2, transport the support and adjustment device 2 into the large-diameter pressure steel pipe 4 and connect it with the walking device 1;

[0034] S3, bind the control device with the walking device 1 and the support adjustment device 2, and adjust the length of the telescopic folding support rod 14 so that the central support 21 of the support adjustment device 2 is centered on the axis of the large-diameter pressure steel pipe 4.

[0035] S4, the control device sets the length of the radial hydraulic telescopic rod 22 of the support rounding device 2 and the curvature of the arc-adjustable support surface 23 according to the inner diameter of the large-diameter pressure steel pipe 4.

[0036] S5, when the adjustable support surface 23 contacts the inner wall of the steel pipe, the telescopic folding support rod 14 of the walking device 1 begins to retract, and the walking device 1 is retracted.

[0037] S6, check the fit between the adjustable support surface 23 and the inner wall of the steel pipe until it is adjusted to the allowable error range, then stop the rounding operation of the support rounding device 2. At this time, the support and rounding operation of the inner wall of the large diameter pressure steel pipe 4 is completed.

[0038] S6, the control device controls the telescopic folding support rod 14 to start extending, and when the walking wheel 12 contacts the pipe wall, the radial hydraulic telescopic rod 22 and the support adjustment device 2 start to retract;

[0039] S7, the control device controls the walking device 1 to move forward to the next ring, and the next round of support and adjustment operation begins.

[0040] The above description is merely a preferred embodiment of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic rounding inner support device for a large-diameter pressure steel pipe, characterized in that: The device includes a walking device (1), a support and adjustment device (2), and a control device. The walking device (1) is located below the support and adjustment device (2) and includes a frame (11), at least two sets of walking wheels (12) mounted on the frame (11) and driven by a power source (13), and at least one telescopic folding support rod (14) connecting the frame (11) and the central support (21). The support and adjustment device (2) includes a central support (21), a plurality of radial hydraulic telescopic rods (22) arranged circumferentially around the central support (21), and mounted on each of the central support (21). The radial hydraulic telescopic rod (22) has an adjustable arc support surface (23) at its outer end; the control device includes an oil pump (34) and an industrial computer (33) installed in the central support (21). The industrial computer (33) is equipped with a remote controller (31). The oil pump (34) is connected to the telescopic folding support rod (14), the radial hydraulic telescopic rod (22), and the adjustable arc support surface (23) through a hydraulic distributor (35) and a pipe (36). The oil pump (34), the hydraulic distributor (35), and the power source (13) are all electrically connected to the industrial computer (33). The arc-adjustable support surface (23) includes a hydraulic cylinder (234) and a left rod (231) and a right rod (232) symmetrically hinged at its outer ends. The left rod (231) and the right rod (232) maintain a distance at the hinge and both bend toward the hydraulic cylinder (234). The top rod (235) of the hydraulic cylinder (234) is hinged to the end of the bent section (233) of the left rod (231) and the right rod (232). The outer sides of both the left rod (231) and the right rod (232) are made of arc surfaces; The telescopic folding support rod (14) includes an upper connecting rod (141), a folding arm (142), and a lower connecting rod (143) connected in sequence. The folding arm (142) is driven by a hydraulic cylinder. The upper connecting rod (141) is connected to the central support (21) by a thread, and the lower connecting rod (143) is connected to the frame (11).

2. A method for adjusting the circle of a large-diameter pressure steel pipe based on an automatic circle-adjusting inner support device according to claim 1, characterized in that, It includes the following steps: S1, the walking device (1) is arranged at the bottom inside the large-diameter pressure steel pipe (4); S2, transport the support adjustment device (2) into the large-diameter pressure steel pipe (4) and connect it with the walking device (1); S3, bind the control device with the walking device (1) and the support adjustment device (2), adjust the length of the telescopic folding support rod (14) so ​​that the central support (21) of the support adjustment device (2) is centered on the axis of the large diameter pressure steel pipe (4); S4, the control device sets the length of the radial hydraulic telescopic rod (22) of the support rounding device (2) and the curvature of the arc-adjustable support surface (23) according to the inner diameter of the large-diameter pressure steel pipe (4); S5, when the arc-adjustable support surface (23) contacts the inner wall of the steel pipe, the telescopic folding support rod (14) of the walking device (1) begins to retract; S6, check the fit between the adjustable support surface (23) and the inner wall of the steel pipe until it is adjusted to within the allowable error range, then stop the rounding work of the support rounding device (2). At this time, the support and rounding work of the inner wall of the large diameter pressure steel pipe (4) is completed. S6, the control device controls the telescopic folding support rod (14) to start extending, and when the walking wheel (12) contacts the pipe wall, the radial hydraulic telescopic rod (22) and the support adjustment device (2) start to retract; S7, the control device controls the walking device (1) to move forward to the next ring and start the next round of support and adjustment operation.

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