Dismantling method of inserted steel tube tower

Abstract

The invention discloses a dismounting method of an inserted steel tube tower, which comprises the following steps: [1] arranging upper fixing tubes on two sides of an upper steel tube, and arranging lower fixing tubes on two sides of a lower steel tube; (2) a jack is installed on the upper surface of the lower fixing pipe, and a hydraulic device is arranged for driving the jack; [3] making a displacement datum line mark at the sleeved part of the upper steel pipe and the lower steel pipe, and installing a camera to be aligned with the displacement datum line mark for observation; (4) driving the jack to synchronously jack the upper fixed pipe and the upper steel pipe; and (5) observing the displacement of the sleeving part through a camera, observing whether the contact surface of the sleeving part has a loose sign or not, if the contact surface is obviously loose, starting a hoist which is hoisted at the upper steel pipe in advance, dismantling the upper steel pipe through the hoist, and if the contact surface is not obviously loose, continuing to pressurize until the contact surface is loose, and dismantling. According to the invention, while the plug-in type single-pipe towers are stably separated and disassembled, the damage to the pipe body is reduced, so that the pipe body is convenient to recycle, the cost of the whole equipment is effectively controlled, and the disassembly safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe tower disassembly and assembly, in particular to a dismantling method of a plug-in steel pipe tower. Background Art

[0002] Plug-in single-tube towers are widely used in existing towers and newly built towers. When relocating and dismantling sites, some plug-in single-tube towers cannot be separated because the plug-in parts are too tight after long-term use, so they can only be scrapped and dismantled, resulting in waste and loss of tower company assets. At the same time, the existing dismantling method of dismantling by shaking and pulling with a crane also has great safety hazards. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for dismantling a plug-in steel pipe tower, which can stably achieve the separation and dismantling of plug-in single-tube towers, reduce damage to the pipe body to facilitate recycling and reuse, effectively control the cost of the overall equipment, and improve dismantling safety.

[0004] The present invention adopts the following technical solution: a method for dismantling a spliced ​​steel pipe tower, comprising the following steps:

[0005] [1] Arrange upper fixing tubes on both sides of the upper steel tube, and arrange lower fixing tubes on both sides of the lower steel tube. The upper fixing tubes and the lower fixing tubes on both sides correspond to each other and the distance between the upper and lower relative surfaces is maintained at 160-180 mm;

[0006] [2] A jack is installed on the upper surface of the lower fixed pipe, and a hydraulic device corresponding to the jack is provided at the lower fixed pipe for driving;

[0007] [3] Install a camera on the lower steel pipe, make a displacement reference line mark at the joint of the upper steel pipe and the lower steel pipe, and aim the camera at the displacement reference line mark for observation;

[0008] [4] The hydraulic device is remotely activated to cause the jacks on both sides to jack up the upper fixed pipe and simultaneously lift up the upper fixed pipe and the upper steel pipe;

[0009] [5] Observe the displacement of the joint through a camera. When the displacement reaches 50 mm, observe whether the contact surface of the joint shows signs of looseness. If it is obviously loose, start the lifting device pre-suspended at the upper steel pipe and remove the upper steel pipe through lifting. If there is no obvious looseness, continue to apply pressure until it is loose and then remove it.

[0010] As an improvement, step [4] also includes: if the pressure value reaches 70 MPa during the jacking process and there is no obvious displacement at the joint of the upper steel pipe and the lower steel pipe, the two sets of hydraulic devices are depressurized and then started alternately to allow the two sets of jacks to jack in turn, and repeated attempts are made until the displacement returns to normal, and then the synchronous jacking is resumed.

[0011] As an improvement, the dismantling device used in the dismantling method of the plug-in steel pipe tower includes two groups of upper fixed pipes and two groups of lower fixed pipes. The two sides of the opposite ends of the upper steel pipes and the lower steel pipes to be separated and dismantled are provided with a plurality of mounting ears for disassembly and assembly. The two groups of upper fixed pipes and the two groups of lower fixed pipes are respectively installed at the mounting ears on both sides of the upper steel pipes and the lower steel pipes; jacks are installed on the upper parts of the two groups of lower fixed pipes, hydraulic devices are arranged on the two groups of lower fixed pipes corresponding to the jacks, and the hydraulic devices are connected to the jacks to provide power drive; cameras are installed on the sides of the two groups of lower fixed pipes.

[0012] As an improvement, a mounting hole is provided on the mounting ear, and a plurality of groups of round holes or waist-shaped holes are provided along the length direction of the upper fixing tube and the lower fixing tube. The round holes or waist-shaped holes correspond to the mounting holes and are installed and locked by fasteners.

[0013] As an improvement, an upper support plate is provided at the lower end of the upper fixed tube, and a lower support plate is provided at the upper end of the lower fixed tube. A jack is installed on the lower support plate, and a positioning cavity is provided on the lower surface of the upper support plate. When the jack is lifted to the upper support plate, it is accommodated in the positioning cavity for peripheral limiting.

[0014] As an improvement, the camera is mounted on the lower steel pipe via a long pole bracket, and the camera is located at the outer end of the long pole bracket.

[0015] As an improvement, a hook is provided on the lower fixed pipe, and the hydraulic device is suspended on the hook.

[0016] Beneficial effects of the present invention:

[0017] 1. By setting jacks on both sides of the upper and lower steel pipes and cooperating with hydraulic devices for synchronous hydraulic jacking, the operator can remotely control and separate the upper and lower steel pipes. After the pipes are effectively displaced and obviously loosened, the upper steel pipe can be hoisted and removed. This can effectively reduce the damage to the joints of the upper and lower steel pipes, making it easier to recycle and reuse the upper and lower steel pipes. It also avoids the safety hazards caused by traditional rigid shaking and pulling methods.

[0018] 2. The installation method of the fixed pipes on the upper and lower steel pipes is optimized, and the installation is arranged vertically on both sides, which can avoid lateral movement of the operator during the installation process. After the installation is completed, it can be remotely controlled under the tower, and the safety of the operator is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the dismantling device of the present invention.

[0020] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0021] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the positioning cavity of the removal device of the present invention.

[0022] Figure 4 It is a schematic diagram of the top structure of the dismantling device of the present invention.

[0023] In the figure: 1. upper steel pipe; 2. lower steel pipe; 3. upper fixing pipe; 4. mounting ear; 5. mounting hole; 6. upper support plate; 7. jack; 8. camera; 9. long rod bracket; 10. lower support plate; 11. hydraulic device; 12. hook; 13. lower fixing pipe; 14. positioning cavity. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 , 2 , 3, and 4 are specific embodiments of the method for dismantling a spliced ​​steel pipe tower according to the present invention.

[0026] This embodiment includes the following steps:

[0027] [1] Upper fixing tubes 3 are arranged on both sides of the upper steel tube 1, and lower fixing tubes 13 are arranged on both sides of the lower steel tube 2. The upper fixing tubes 3 and the lower fixing tubes 13 on both sides correspond to each other and the distance between the upper and lower relative surfaces is maintained at 160-180 mm;

[0028] [2] A jack 7 is mounted on the upper surface of the lower fixed pipe 13, and a hydraulic device 11 corresponding to the jack 7 is provided at the lower fixed pipe 13 for driving;

[0029] [3] A camera 8 is installed on the lower steel pipe 2, and a displacement reference line mark is made at the socket joint of the upper steel pipe 1 and the lower steel pipe 2. The camera 8 is aligned with the displacement reference line mark for observation;

[0030] [4] The hydraulic device 11 is remotely started to cause the jacks 7 on both sides to jack up the upper fixed pipe 3 and simultaneously lift up the upper fixed pipe 3 and the upper steel pipe 1;

[0031] [5] Observe the displacement of the socket joint through camera 8. When the displacement reaches 50 mm, observe whether the contact surface of the socket joint shows signs of looseness. If it is obviously loose, start the lifting device pre-suspended at the upper steel pipe 1 and remove the upper steel pipe 1 through lifting. If there is no obvious looseness, continue to apply pressure until it is loosened and then remove it.

[0032] When the present invention is implemented, both sides of the upper and lower ends of the upper steel pipe 1 and the lower steel pipe 2 are provided with mounting ears 4 for disassembling and lifting the steel pipes. With the help of the mounting ears 4, the upper fixed pipe 3 and the lower fixed pipe 13 can be directly installed accordingly, which effectively reduces the arrangement of the welding bracket. On the one hand, it reduces the complexity of the arrangement and simplifies the installation process. On the other hand, the operator does not need to perform lateral movement installation, which improves the safety and convenience of operation.

[0033] After the equipment is installed, the operator controls the jack 7 through remote control, and directly observes the displacement of the upper steel pipe 1 and the lower steel pipe 2 through the camera 8, which can keep the operator away from the construction site, which is safer; and the steel pipe can be hoisted after sufficient displacement is completed and the sleeve joint is loose, reducing the damage to the sleeve joint of the upper steel pipe 1 and the lower steel pipe 2 during removal, which is conducive to subsequent recycling and reuse. The distance between the upper fixed pipe 3 and the lower fixed pipe 13 is set according to the common specifications of the plug-in single-tube tower, and the displacement distance of the jack 7 is set, so that the entire removal method is applicable to most conventional plug-in single-tube towers. The operator can perform standardized construction operations according to the operating instructions, reduce the difficulty of operation, and facilitate large-scale promotion and application. During the construction process, relying on the installation ear 4 on the upper steel pipe 1 for pre-hoisting, the construction and fixation of the hoisting wire can be completed in advance.

[0034] As an improved specific implementation method, step [4] also includes: if the pressure value reaches 70Mpa during the jacking process and there is no obvious displacement at the joint of the upper steel pipe 1 and the lower steel pipe 2, the two groups of hydraulic devices 11 are depressurized and then started in turn to allow the two groups of jacks 7 to jack in turn, and repeated attempts are made until the displacement returns to normal, and then the synchronous jacking is restored.

[0035] When this embodiment is implemented, when the upper and lower steel pipes are too tightly connected to each other after long-term use and are difficult to loosen and separate, and the operator controls the hydraulic device 11 to pressurize to the set value of 70Mpa and still cannot move, the pressure is first released, and then the two sides are lifted in turn, relying on the single-side alternate pressurization to destroy the tight state of the upper and lower steel pipes. When the tight state is destroyed, that is, a certain displacement occurs on both sides, the two sides are synchronously pressurized and lifted. The above operation method ensures the smooth separation of the upper and lower steel pipes, and can also effectively dismantle the tight single-tube tower that has been used for a long time.

[0036] As an improved specific implementation method, the dismantling device used in the dismantling method of the plug-in steel pipe tower includes two groups of upper fixed pipes 3 and two groups of lower fixed pipes 13. The two sides of the opposite ends of the upper steel pipe 1 and the lower steel pipe 2 to be separated and dismantled are provided with a plurality of mounting ears 4 for disassembly and assembly. The two groups of upper fixed pipes 3 and the two groups of lower fixed pipes 13 are respectively installed at the mounting ears 4 on both sides of the upper steel pipe 1 and the lower steel pipe 2; jacks 7 are installed on the upper parts of the two groups of lower fixed pipes 13, and hydraulic devices 11 are arranged on the two groups of lower fixed pipes 13 corresponding to the jacks 7, and the hydraulic devices 11 are connected to the jacks 7 to provide power drive; cameras 8 are installed on the sides of the two groups of lower fixed pipes 13 of the lower steel pipe 2.

[0037] like Figure 1-4As shown, both sides of the opposite ends of the upper steel pipe 1 and the lower steel pipe 2 are provided with a plurality of mounting ears 4 for assembly and disassembly, which are generally two pairs spaced apart from each other. The upper and lower positions of the upper fixed pipe 3 and the lower fixed pipe 13 can be installed on the two pairs of mounting ears 4 spaced apart from each other to achieve structural fixation; the installation on both sides only requires the operator to move up and down twice, and the construction efficiency is relatively high; after the lower fixed pipe 13 is installed, the jack 7, the hydraulic device 11, and the camera 8 are installed, and the jack 7 and the hydraulic device 11 are arranged close to each other, and the camera 8 is installed relatively far away from the lower fixed pipe 13, so that the shooting range of the camera 8 can cover a larger area of ​​the displacement reference line mark at the joint of the jack 7, the upper steel pipe 1 and the lower steel pipe 2, and the range covered by the cameras 8 on both sides allows the operator to intuitively observe the displacement of the upper steel pipe 1 and the lower steel pipe 2.

[0038] As an improved specific implementation method, a mounting hole 5 is provided on the mounting ear 4, and a plurality of groups of round holes or waist-shaped holes are provided along the length direction of the upper fixing tube 3 and the lower fixing tube 13. The round holes or waist-shaped holes correspond to the mounting hole 5 and are installed and locked by fasteners.

[0039] like Figure 1 , 2 As shown, the upper fixed tube 3 and the lower fixed tube 13 can correspond to the mounting holes 5 on the mounting ears 4 and perform the required upper and lower position adjustments through the arrangement of several groups of round holes or waist-shaped holes, so that the upper fixed tube 3 and the lower fixed tube 13 are installed to ensure the required upper and lower spacing, and then cooperate with the jack 7 for jacking and displacement, which can match a wider range of single-tube tower specifications for construction.

[0040] As an improved specific implementation method, an upper support plate 6 is provided at the lower end of the upper fixed tube 3, a lower support plate 10 is provided at the upper end of the lower fixed tube 13, a jack 7 is installed on the lower support plate 10, and a positioning cavity 14 is provided on the lower surface of the upper support plate 6. When the jack 7 is lifted to the upper support plate 6, it is accommodated in the positioning cavity 14 for peripheral limiting.

[0041] like Figure 1 , 2 As shown in Figure 3, the lower support plate 10 provides a larger installation platform at the upper end of the lower fixed tube 13 for the stable installation of the jack 7; the upper support plate 6 provides a larger interference platform at the lower end of the upper fixed tube 3, and a positioning cavity 14 is set on the interference platform, which is a cavity structure compatible with the interference structure of the jack 7 during specific implementation. When the interference structure of the jack 7 is pushed to the upper support plate 6, the interference structure is located in the positioning cavity 14, that is, the periphery of the interference structure is limited by the inner wall of the positioning cavity 14, so even if there is a small non-axial movement of the upper steel tube 1 and the lower steel tube 2 (the upper fixed tube 3 and the lower fixed tube 13) during the jacking process, the interference state of the jack 7 will not be offset, thereby ensuring the continuous stability of the jacking state.

[0042] As an improved specific implementation manner, the camera 8 is installed on the lower steel pipe 2 through a long pole bracket 9, and the camera 8 is located at the outer end of the long pole bracket 9.

[0043] like Figure 1 , 2 As shown in Figure 4, the inner end of the long rod bracket 9 is separately installed on the lower steel pipe 2. Depending on the length of the long rod bracket 9, the camera 8 is set at the outer end of the long rod bracket 9, so that the camera 8 has a wider angle lens to capture the position of the jack 7 and the joint of the upper steel pipe 1 and the lower steel pipe 2 as the displacement reference line mark, which is convenient for the operator to observe.

[0044] As an improved specific implementation manner, a hook 12 is provided on the lower fixed pipe 13 , and the hydraulic device 11 is suspended on the hook 12 .

[0045] like Figure 1 , 2 As shown, by means of the provided hook 12, the hydraulic device 11 can be directly suspended on the hook 12, so that the hydraulic device 11 and the jack 7 are kept in a close arrangement state, and the hydraulic device 11 itself has no rigid fixed use requirements, so the hanging method that is easy to disassemble and assemble greatly simplifies the installation structure and reduces the complexity of construction.

[0046] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for dismantling a spliced ​​steel pipe tower, characterized in that: The following steps are involved: [1] Upper fixing tubes (3) are arranged on both sides of the upper steel tube (1), and lower fixing tubes (13) are arranged on both sides of the lower steel tube (2), the upper fixing tubes (3) and the lower fixing tubes (13) on both sides correspond to each other and the distance between the upper and lower relative surfaces is maintained at 160-180 mm; [2] A jack (7) is installed on the upper surface of the lower fixed pipe (13), and a hydraulic device (11) corresponding to the jack (7) is provided at the lower fixed pipe (13) for driving; [3] A camera (8) is installed on the lower steel pipe (2), and a displacement reference line mark is made at the joint between the upper steel pipe (1) and the lower steel pipe (2), and the camera (8) is aligned with the displacement reference line mark for observation; [4] remotely starting the hydraulic device (11) to cause the jacks (7) on both sides to push up the upper fixed pipe (3) and simultaneously lift up the upper fixed pipe (3) and the upper steel pipe (1); [5] Observe the displacement of the socket joint through a camera (8). When the displacement reaches 50 mm, observe whether the contact surface of the socket joint shows signs of looseness. If it is obviously loose, start the lifting device pre-suspended at the upper steel pipe (1) and remove the upper steel pipe (1) through the lifting device. If there is no obvious looseness, continue to apply pressure until it is loosened and then remove it.

2. The method for dismantling a spliced ​​steel pipe tower according to claim 1, characterized in that: Step [4] also includes: if the pressure value reaches 70Mpa during the lifting process and there is no obvious displacement at the sleeve joint of the upper steel pipe (1) and the lower steel pipe (2), the two sets of hydraulic devices (11) are relieved and then started in turn to make the two sets of jacks (7) lift in turn, and the attempts are repeated until the displacement is normal, and then the synchronous lifting is resumed.

3. A method for dismantling a spliced ​​steel pipe tower according to claim 1 or 2, characterized in that: The dismantling device used in the dismantling method of the plug-in steel pipe tower comprises two groups of upper fixed pipes (3) and two groups of lower fixed pipes (13). The two sides of the opposite ends of the upper steel pipe (1) and the lower steel pipe (2) to be separated and dismantled are provided with a plurality of mounting ears (4) for dismantling. The two groups of upper fixed pipes (3) and the two groups of lower fixed pipes (13) are respectively mounted on the mounting ears (4) on the two sides of the upper steel pipe (1) and the lower steel pipe (2); jacks (7) are mounted on the upper parts of the two groups of lower fixed pipes (13); hydraulic devices (11) are arranged on the two groups of lower fixed pipes (13) corresponding to the jacks (7); the hydraulic devices (11) are connected to the jacks (7) to provide power drive; and cameras (8) are mounted on the sides of the two groups of lower fixed pipes (13) of the lower steel pipe (2).

4. The method for dismantling a spliced ​​steel pipe tower according to claim 3, characterized in that: The mounting ear (4) is provided with a mounting hole (5), and the upper fixing tube (3) and the lower fixing tube (13) are provided with a plurality of groups of round holes or waist-shaped holes along the length direction, and the round holes or waist-shaped holes correspond to the mounting hole (5) and are installed and locked by fasteners.

5. The method for dismantling a spliced ​​steel pipe tower according to claim 3, characterized in that: An upper support plate (6) is arranged at the lower end of the upper fixed tube (3), a lower support plate (10) is arranged at the upper end of the lower fixed tube (13), a jack (7) is mounted on the lower support plate (10), a positioning cavity (14) is arranged on the lower surface of the upper support plate (6), and the jack (7) is accommodated in the positioning cavity (14) for peripheral limiting when it is lifted to the upper support plate (6).

6. The method for dismantling a spliced ​​steel pipe tower according to claim 3, characterized in that: The camera (8) is installed on the lower steel pipe (2) via a long rod bracket (9), and the camera (8) is located at the outer end of the long rod bracket (9).

7. The method for dismantling a spliced ​​steel pipe tower according to claim 3, characterized in that: The lower fixed pipe (13) is provided with a hook (12), and the hydraulic device (11) is suspended on the hook (12).

Images