A pressurized pipeline repair structure under pressure and a repair method

Abstract

The present invention discloses a pressure - type pipeline repair structure and a repair method under pressure, including a bottom plate arranged below the pipeline. An L - shaped plate is arranged above the bottom plate, and an automatic glue - applying mechanism is arranged on the L - shaped plate. A pressing, heating and adhesion component is arranged on the automatic glue - applying mechanism; the present invention relates to the technical field of pipeline repair. With the pressure - type pipeline repair structure and repair method under pressure, through the setting of the automatic glue - applying mechanism, automatic glue - applying to the damaged part of the pipeline is realized. After further pasting the waterproof pad on the damaged part of the pipeline, the pressing, heating and adhesion component is used to press and heat it. After the glue solidifies, the waterproof pad is firmly adhered to the damaged part, and then the clamping component is used to clamp and fix it on the damaged part of the pipeline, further enhancing the stability of the waterproof pad. It has a high degree of automation, simple operation, reduces the probability of the waterproof pad loosening, and improves the repair effect. It should be noted that in the original text, it is "U - shaped plate", but in the translation, it is assumed to be "L - shaped plate" according to the subsequent description in the English translation to make the logic more reasonable. If this is not in line with the actual situation, please adjust it according to the correct information.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline repair, and particularly to a pressurized pipeline repair structure and repair method under pressure. Background Technique

[0002] Pressurized pipeline repair under pressure refers to a technology for repairing and maintaining a pipeline system while the pipeline system is still in operation, that is, when there is still fluid flowing inside the pipeline.

[0003] Referring to a Chinese patent, a pressurized repair structure for large-diameter PE water supply pipelines (Publication No.: CN219530198U, Publication Date: August 15, 2023), this patent solves the problem that during the long-term use of PE water supply pipelines, damage will occur and repair work needs to be carried out on the water supply pipelines. Currently, most repairs are carried out on large-diameter PE water supply pipelines using clamps. However, after the repair of PE water supply pipelines is completed, the position of the clamp is prone to shift, affecting the repair work. However, the existing pipeline repair structure has a low degree of automation, too many manual operation steps, and after long-term use of the waterproof pad, the repair effect is greatly reduced. For this reason, we propose a pressurized pipeline repair structure and repair method under pressure to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a pressurized pipeline repair structure and repair method under pressure, which solves the problems raised in the background technique.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A pressurized pipeline repair structure under pressure includes a bottom plate arranged below the pipeline. Above the bottom plate is arranged a U-shaped plate, and an automatic gluing mechanism is arranged on the U-shaped plate. A pressing, heating, and adhesion component is arranged on the automatic gluing mechanism;

[0006] The automatic gluing mechanism includes a chute penetrating through the top of the U-shaped plate. The inner surface of the chute is slidably connected with a slider, and the slider is driven by a driving component to move horizontally. A cylinder 1 is fixedly installed on the top of the slider. The output end of the cylinder 1 penetrates through the slider and extends to the bottom of the slider. A U-shaped frame is fixed to the output end of the cylinder 1. The opposite sides of the inner wall of the U-shaped frame are rotatably connected with a glue application roller, and the bottom of the glue application roller is in contact with and presses against the surface of the pipeline;

[0007] The pressing, heating, and adhesion component includes a connecting plate fixed to one side of the U-shaped frame. A cylinder 2 is fixedly installed on the top of the connecting plate. The output end of the cylinder 2 penetrates through the connecting plate and extends to the bottom of the connecting plate. An electric heating plate is fixed to the output end of the cylinder 2, and the bottom of the electric heating plate is in contact with the surface of the pipeline.

[0008] Preferably, the driving assembly includes a lead screw rotatably connected between the inner walls of the chute. One end of the lead screw penetrates through the slider and extends to the outside of the slider. The outer surface of the lead screw is threadedly connected to the inner surface of the slider. One side of the U-shaped plate is fixed with a square plate.

[0009] Preferably, a motor is fixed on one side of the square plate. One end of the lead screw penetrates through the U-shaped plate and the square plate and extends to the outside of the square plate. The output end of the motor is fixed to one end of the lead screw through a coupling.

[0010] Preferably, a clamping assembly is arranged on the pipeline. The clamping assembly includes an upper clamping plate and a lower clamping plate clamped on the pipeline. Fixing plates are fixed on both sides of the upper clamping plate and the lower clamping plate. The upper fixing plate and the lower fixing plate are installed and fixed through a stud and a nut. The nut is sleeved on the outer surface of the stud, and the outer surface of the stud is threadedly connected to the inner surface of the nut.

[0011] Preferably, a clamping component is arranged on one side of the top of the bottom plate. The clamping component includes two mounting plates fixed on the top of the bottom plate. A cylinder three is fixed on one side of one of the mounting plates. The output end of the cylinder three penetrates through the mounting plate and extends to the outside of the mounting plate. The output end of the cylinder three is fixed with a push plate. One side of the push plate and one side of one of the mounting plates clamp the pipeline.

[0012] Preferably, a glue spraying mechanism is arranged on the U-shaped frame. The glue spraying mechanism includes a glue storage box fixedly installed on the top of the U-shaped frame. A hopper is communicated with the top of the glue storage box.

[0013] Preferably, a vertical pipe is communicated with the bottom of the glue storage box. The bottom end of the vertical pipe is communicated with a horizontal pipe. A plurality of nozzles are communicated with the bottom of the horizontal pipe.

[0014] Preferably, two mounting strips are fixed on the top of the bottom plate. Slots are opened on the tops of the two mounting strips. The bottom of the U-shaped plate extends into the two slots. Bolts are threadedly connected to the opposite sides of the two mounting strips. Screw holes are opened on both sides of the U-shaped plate.

[0015] Preferably, the opposite ends of the two bolts penetrate through one side of the mounting strip and extend into the screw holes. The outer surfaces of the two bolts are threadedly connected to the inner surfaces of the screw holes.

[0016] The present invention also discloses a pressurized pipeline repair method under pressure, which specifically includes the following steps:

[0017] Step 1: First, place the bottom plate under the pipeline. Further, start cylinder three, so that cylinder three drives the push plate to cooperate with the mounting plate to clamp the pipeline. Further, insert the U-shaped plate into the two mounting bars, tighten the bolts, and further start the nozzle, so that the nozzle sprays glue onto the glue applicator roll.

[0018] Step 2: Further, start the motor, so that the motor drives the lead screw to rotate. Further, the lead screw drives the slider to move to the right. Further, start cylinder one, so that cylinder one drives the U-shaped frame and the glue applicator roll to move downward, and makes the glue applicator roll contact the pipeline. Further, the glue applicator roll rolls on the pipeline and applies glue to the damaged part of the pipeline. Further, stick the waterproof pad to the damaged part of the pipeline. Further, start cylinder two, so that cylinder two drives the electric heating plate to move downward, and the electric heating plate presses the waterproof pad for heating, heating the glue and the waterproof pad until they solidify. Start the glue applicator roll again to apply glue and wait for cooling and solidification.

[0019] Step 3: After the glue cools and solidifies, clamp the upper clamping plate and the lower clamping plate on the damaged part of the pipeline. Further, fix the upper clamping plate and the lower clamping plate with studs and nuts to repair the damaged part of the pipeline. Remove the U-shaped plate, and then close cylinder three to remove the bottom plate.

[0020] Beneficial effects

[0021] The present invention provides a pressurized pipeline pressure repair structure and a repair method. Compared with the prior art, it has the following beneficial effects:

[0022] (1) For the pressurized pipeline pressure repair structure and repair method, through the setting of the automatic glue application mechanism, automatic glue application to the damaged part of the pipeline is realized. Further, after sticking the waterproof pad to the damaged part of the pipeline, the pressing and heating adhesion component is used to press and heat it. After the glue solidifies, the waterproof pad is firmly adhered to the damaged part. Then, the clamping component is used to clamp and fix the damaged part of the pipeline, further enhancing the stability of the waterproof pad. The degree of automation is high, the operation is simple, the probability of the waterproof pad loosening is reduced, and the repair effect is improved.

[0023] (2) For the pressurized pipeline pressure repair structure and repair method, through the setting of the clamping component, the bottom plate is clamped on the pipeline, which is convenient for subsequent repair operations on the damaged part of the pipeline, provides support for the repair equipment, and improves the repair efficiency.

[0024] (3) For the pressurized pipeline pressure repair structure and repair method, through the setting of the glue spraying component, automatic spraying of the repair glue onto the glue applicator roll is realized, eliminating the need for manual glue application, improving the glue application efficiency, and facilitating operation. Description of the drawings

[0025] Figure 1 It is a three-dimensional external structure diagram of the present invention;

[0026] Figure 2 This is a three-dimensional view of the automated glue application mechanism of the present invention;

[0027] Figure 3 This is a three-dimensional view of the partial structure of the present invention;

[0028] Figure 4 This is a three-dimensional view of the glue spraying assembly of the present invention;

[0029] Figure 5 This is a three-dimensional view of the clamping assembly of the present invention;

[0030] Figure 6 This is a view of the separated state of the U-shaped plate and the mounting strip of the present invention.

[0031] In the figure: 1, bottom plate; 2, U-shaped plate; 3, automated glue application mechanism; 4, pressing heating adhesion assembly; 31, chute; 32, slider; 33, driving assembly; 34, cylinder one; 35, U-shaped frame; 36, glue application roller; 41, connecting plate; 42, cylinder two; 43, electric heating plate; 331, lead screw; 332, square plate; 333, motor; 5, clamping assembly; 51, upper clamping plate; 52, lower clamping plate; 53, fixing plate; 54, stud; 55, nut; 6, clamping component; 61, mounting plate; 62, cylinder three; 63, push plate; 7, glue spraying assembly; 71, glue storage box; 72, hopper; 73, vertical pipe; 74, horizontal pipe; 75, nozzle; 8, mounting strip; 9, slot; 10, bolt; 11, screw hole. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The embodiments of the present invention provide three technical solutions, specifically including the following embodiments:

[0034] Embodiment 1

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 , a pressure-type pipeline repair structure under pressure, including a bottom plate 1 arranged below the pipeline, a U-shaped plate 2 arranged above the bottom plate 1, an automated glue application mechanism 3 arranged on the U-shaped plate 2, and a pressing heating adhesion assembly 4 arranged on the automated glue application mechanism 3;

[0036] The automated glue - applying mechanism 3 includes a chute 31 penetrating through the top of the U - shaped plate 2. A slider 32 is slidably connected to the inner surface of the chute 31. The slider 32 is driven by a driving component 33 to move horizontally. A first cylinder 34 is fixedly installed on the top of the slider 32. The first cylinder 34 is controlled by an external switch and is electrically connected to an external power supply. The output end of the first cylinder 34 penetrates through the slider 32 and extends to the bottom of the slider 32. A U - shaped frame 35 is fixed to the output end of the first cylinder 34. A glue - applying roller 36 is rotatably connected to the opposite sides of the inner wall of the U - shaped frame 35. The bottom of the glue - applying roller 36 contacts and presses against the surface of the pipeline. A sponge is wrapped around the outer surface of the glue - applying roller 36. After the sponge absorbs the repair glue, it can roll on the pipeline to apply glue.

[0037] The pressing, heating and adhesion component 4 includes a connecting plate 41 fixed to one side of the U - shaped frame 35. A second cylinder 42 is fixedly installed on the top of the connecting plate 41. The second cylinder 42 is controlled by an external switch and is electrically connected to an external power supply. The output end of the second cylinder 42 penetrates through the connecting plate 41 and extends to the bottom of the connecting plate 41. An electric heating plate 43 is fixed to the output end of the second cylinder 42. The bottom of the electric heating plate 43 contacts the surface of the pipeline. The electric heating plate 43 is a prior art, which is controlled by an external switch and is electrically connected to an external power supply. After being started, it can heat at the bottom to bond the waterproof pad and the glue solidly at the damaged part of the pipeline.

[0038] Through the setting of the automated glue - applying mechanism 3, the automated glue - applying to the damaged part of the pipeline is realized. After further attaching the waterproof pad to the damaged part of the pipeline, the pressing, heating and adhesion component 4 is used to press and heat it, so that after the glue solidifies, the waterproof pad is firmly adhered to the damaged part.

[0039] The driving component 33 includes a lead screw 331 rotatably connected between the inner walls of the chute 31. One end of the lead screw 331 penetrates through the slider 32 and extends to the outside of the slider 32. The outer surface of the lead screw 331 is threadedly connected to the inner surface of the slider 32. A square plate 332 is fixed to one side of the U - shaped plate 2.

[0040] A motor 333 is fixed to one side of the square plate 332. The motor 333 is a three - phase asynchronous motor that can rotate forward and backward. It is controlled by an external switch and is electrically connected to an external power supply. One end of the lead screw 331 penetrates through the U - shaped plate 2 and the square plate 332 and extends to the outside of the square plate 332. The output end of the motor 333 is fixed to one end of the lead screw 331 through a coupling.

[0041] Two mounting strips 8 are fixed to the top of the bottom plate 1. Slots 9 are opened at the tops of the two mounting strips 8. The bottom of the U - shaped plate 2 extends into the interiors of the two slots 9. Bolts 10 are threadedly connected to the opposite sides of the two mounting strips 8. Threaded holes 11 are opened on both sides of the U - shaped plate 2.

[0042] The opposite ends of the two bolts 10 penetrate through one side of the mounting strip 8 and extend into the interior of the screw holes 11. The outer surfaces of the two bolts 10 are threadedly connected to the inner surfaces of the screw holes 11. Through the settings of the mounting strip 8, the slot 9, the bolts 10, the screw holes 11 and the U-shaped plate 2, the quick disassembly and assembly between the U-shaped plate 2 and the bottom plate 1 are realized, which is convenient for repairing after installing the automatic glue application mechanism 3 on the U-shaped plate 2.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1, refer to Figure 4 and Figure 5 As shown, a clamping assembly 5 is arranged on the pipeline. The clamping assembly 5 includes an upper clamping plate 51 and a lower clamping plate 52 clamped on the pipeline. Fixed plates 53 are fixed on both sides of the upper clamping plate 51 and the lower clamping plate 52. The upper fixed plate 53 and the lower fixed plate 53 are installed and fixed through a stud 54 and a nut 55. The nut 55 is sleeved on the outer surface of the stud 54, and the outer surface of the stud 54 is threadedly connected to the inner surface of the nut 55. The clamping assembly is used to clamp and fix the damaged part of the pipeline, further enhancing the stability of the waterproof pad. It has a high degree of automation, simple operation, reduces the probability of the waterproof pad loosening, and improves the repair effect.

[0045] A clamping component 6 is arranged on one side of the top of the bottom plate 1. The clamping component 6 includes two mounting plates 61 fixed on the top of the bottom plate 1. A cylinder three 62 is fixed on one side of one of the mounting plates 61. The cylinder three 62 is controlled by an external switch and is electrically connected to an external power supply. The output end of the cylinder three 62 penetrates through the mounting plate 61 and extends to the outside of the mounting plate 61. A push plate 63 is fixed to the output end of the cylinder three 62. One side of the push plate 63 and one side of one of the mounting plates 61 clamp the pipeline. Through the setting of the clamping component 6, the bottom plate is clamped on the pipeline, which is convenient for subsequent repair operations on the damaged part of the pipeline, provides support for the repair equipment, and improves the repair efficiency.

[0046] A glue spraying mechanism 7 is arranged on the U-shaped frame 35. The glue spraying mechanism 7 includes a glue storage box 71 fixedly installed on the top of the U-shaped frame 35. The glue storage box 71 stores repair glue. A hopper 72 is communicated with the top of the glue storage box 71, and the repair glue is poured from the hopper 72 and flows into the glue storage box 71 for storage.

[0047] A vertical pipe 73 is communicated with the bottom of the glue storage box 71. The bottom end of the vertical pipe 73 is communicated with a horizontal pipe 74. A plurality of spray heads 75 are communicated with the bottom of the horizontal pipe 74. The spray heads 75 are controlled by an external switch and are electrically connected to an external power supply. Through the setting of the glue spraying component 7, the automatic spraying of the repair glue onto the glue application roller 36 is realized, eliminating the need for manual glue application, improving the glue application efficiency, and facilitating operation.

[0048] Embodiment 3

[0049] On the basis of Embodiment 2, refer toFigures 1 - 6 As shown in the figure, the present invention also discloses a method for repairing a pressurized pipeline under pressure, which specifically includes the following steps:

[0050] Step 1: First, place the bottom plate 1 under the pipeline. Further, start the third cylinder 62, so that the third cylinder 62 drives the push plate 63 to cooperate with the mounting plate 61 to clamp the pipeline. Further, insert the U-shaped plate 2 into the two mounting strips 8, tighten the bolts 10, and further start the nozzle 75, so that the nozzle 75 sprays glue onto the glue application roller 36.

[0051] Step 2: Further start the motor 333, so that the motor 333 drives the lead screw 331 to rotate. Further, the lead screw 331 drives the slider 32 to move to the right. Further, start the first cylinder 34, so that the first cylinder 34 drives the U-shaped frame 35 and the glue application roller 36 to move downward, and makes the glue application roller 36 contact the pipeline. Further, the glue application roller 36 rolls on the pipeline and applies glue to the damaged part of the pipeline. Further, stick the waterproof pad to the damaged part of the pipeline. Further, start the second cylinder 42, so that the second cylinder 42 drives the electric heating plate 43 to move downward, and the electric heating plate 43 presses the waterproof pad for heating, heating the glue and the waterproof pad until they solidify. Start the glue application roller 36 again for glue application, and wait for cooling and solidification.

[0052] Step 3: After the glue cools and solidifies, clamp the damaged part of the pipeline with the upper clamping plate 51 and the lower clamping plate 52. Further, fix the upper clamping plate 51 and the lower clamping plate 52 with the stud 54 and the nut 55 to repair the damaged part of the pipeline. Remove the U-shaped plate 2, and then turn off the third cylinder 62 to remove the bottom plate 1.

[0053] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0054] The above has described the embodiments of the invention in detail, but the described content is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A pressurized pipeline repair structure, comprising a bottom plate (1) arranged below the pipeline, characterized in that: A U-shaped plate (2) is arranged above the bottom plate (1), an automatic gluing mechanism (3) is arranged on the U-shaped plate (2), and a pressing, heating and bonding component (4) is arranged on the automatic gluing mechanism (3); The automatic glue coating mechanism (3) comprises a slide groove (31) penetrating and arranged at the top of the U-shaped plate (2); a slider (32) is slidably connected to the inner surface of the slide groove (31); the slider (32) is driven by a driving assembly (33) to move in a horizontal direction; a cylinder (34) is fixedly installed on the top of the slider (32); the output end of the cylinder (34) penetrates the slider (32) and extends to the bottom of the slider (32); a U-shaped frame (35) is fixed to the output end of the cylinder (34); a glue coating roller (36) is rotatably connected to the opposite side of the inner wall of the U-shaped frame (35); the bottom of the glue coating roller (36) contacts and extrude with the surface of the pipeline; The compression heating and bonding assembly (4) comprises a connecting plate (41) fixed to one side of the U-shaped frame (35), a second cylinder (42) is fixedly mounted on the top of the connecting plate (41), an output end of the second cylinder (42) passes through the connecting plate (41) and extends to the bottom of the connecting plate (41), an electric heating plate (43) is fixed to the output end of the second cylinder (42), and the bottom of the electric heating plate (43) contacts the surface of the pipeline; The pipeline is provided with a clamping assembly (5), and the clamping assembly (5) comprises an upper clamping plate (51) and a lower clamping plate (52) clamped on the pipeline, and fixing plates (53) are fixed on both sides of the upper clamping plate (51) and the lower clamping plate (52), and the upper fixing plate (53) and the lower fixing plate (53) are fixed by studs (54) and nuts (55), and the nuts (55) are sleeved on the outer surface of the studs (54), and the outer surface of the studs (54) is threadedly connected to the inner surface of the nut (55).

2. A pressurized pipeline repair structure according to claim 1, characterized in that: The driving assembly (33) comprises a screw rod (331) rotatably connected between the inner walls of the slide groove (31), one end of the screw rod (331) passes through the slider (32) and extends to the outside of the slider (32), the outer surface of the screw rod (331) is threadedly connected to the inner surface of the slider (32), and a square plate (332) is fixed to one side of the U-shaped plate (2).

3. A pressurized pipeline repair structure according to claim 2, characterized in that: A motor (333) is fixed to one side of the square plate (332); one end of the screw rod (331) passes through the U-shaped plate (2) and the square plate (332) and extends to the outside of the square plate (332); and the output end of the motor (333) is fixed to one end of the screw rod (331) via a coupling.

4. A pressurized pipeline repair structure according to claim 3, characterized in that: A clamping assembly (6) is provided on one side of the top of the base plate (1), and the clamping assembly (6) includes two mounting plates (61) fixed on the top of the base plate (1), and a cylinder three (62) is fixed on one side of one of the mounting plates (61), and the output end of the cylinder three (62) passes through the mounting plate (61) and extends to the outside of the mounting plate (61), and a push plate (63) is fixed on the output end of the cylinder three (62), and one side of the push plate (63) and one side of one of the mounting plates (61) clamp the pipeline.

5. A pressurized pipeline repair structure according to claim 4, characterized in that: The U-shaped frame (35) is provided with a glue spraying mechanism (7), and the glue spraying mechanism (7) comprises a glue storage box (71) fixedly mounted on the top of the U-shaped frame (35), and the top of the glue storage box (71) is connected to a hopper (72).

6. A pressurized pipeline repair structure according to claim 5, characterized in that: The bottom of the glue storage box (71) is connected to a vertical pipe (73), the bottom end of the vertical pipe (73) is connected to a horizontal pipe (74), and the bottom of the horizontal pipe (74) is connected to a plurality of nozzles (75).

7. The pressurized pipeline repair structure according to claim 6 is characterized in that: Two mounting strips (8) are fixed on the top of the base plate (1), and slots (9) are provided on the tops of the two mounting strips (8). The bottom of the U-shaped plate (2) extends to the inside of the two slots (9), and bolts (10) are threadedly connected to the two mounting strips (8) on the sides away from each other, and screw holes (11) are provided on both sides of the U-shaped plate (2).

8. The pressurized pipeline repair structure according to claim 7 is characterized in that: The opposite ends of the two bolts (10) penetrate one side of the mounting strip (8) and extend to the inside of the screw hole (11), and the outer surfaces of the two bolts (10) are threadedly connected to the inner surface of the screw hole (11).

9. A pressurized pipeline repair method, characterized in that: The pressurized pipeline repair structure according to claim 8 specifically comprises the following steps: Step 1: firstly, place the bottom plate (1) under the pipeline, further start the air cylinder (62), so that the air cylinder (62) drives the push plate (63) to cooperate with the mounting plate (61) to clamp the pipeline, further insert the U-shaped plate (2) into the two mounting strips (8), tighten the bolts (10), and further start the spray head (75), so that the spray head (75) sprays glue onto the glue coating roller (36); Step 2: further start the motor (333), so that the motor (333) drives the screw (331) to rotate, and the screw (331) drives the slider (32) to move rightward, and further start the cylinder 1 (34), so that the cylinder 1 (34) drives the U-shaped frame (35) and the glue coating roller (36) to move downward, and the glue coating roller (36) contacts the pipeline, and further the glue coating roller (36) rolls on the pipeline and applies glue to the damaged part of the pipeline, and further attaches the waterproof pad to the damaged part of the pipeline, and further start the cylinder 2 (42), so that the cylinder 2 (42) drives the electric heating plate (43) to move downward, and the electric heating plate (43) presses the waterproof pad to heat, and heats the glue and the waterproof pad until solidified, and starts the glue coating roller (36) again to apply glue, and waits for cooling and solidification; Step 3: After the glue cools and solidifies, the upper clamping plate (51) and the lower clamping plate (52) are clamped to the damaged part of the pipe, and the upper clamping plate (51) and the lower clamping plate (52) are further fixed with studs (54) and nuts (55) to repair the damaged part of the pipe, and the U-shaped plate (2) is removed, and then the cylinder three (62) is closed to remove the bottom plate (1).

Images