KR102669298B1 - Constant speed reversal driving device for non-dig pipeline repair felt and driving method using the same - Google Patents

Abstract

The present invention relates to a constant speed reversing travel device for a non-dig pipeline repair felt and a driving method using the same. The constant speed reversal travel device for a non-dig pipeline repair felt according to the present invention is to use a repair felt equipped with a hot melt film using air pressure. A felt inversion device that is inverted and supplied to the repair pipe through a driving member, and heat is supplied to the hot melt film to melt it while maintaining a certain distance from the inverted felt that is inverted in the repair pipe and attached to the inner wall of the repair pipe. It can be used with an inversion felt heating device, and the inversion felt speed measuring unit measures the inversion speed of the inversion felt at which the hot melt film inside is inverted to the surface by the air pressure applied to the repair felt, the inversion speed A reversal felt state display unit that displays the current running state of the reversal felt, a drive member load application unit that applies a load to the drive member to converge to a preset output load below the rated capacity of the drive member, and, and a reversing felt constant speed control unit that controls the driving member and the driving member load application unit based on the current running state of the reversing felt to ensure constant speed reversing running of the reversing felt.

Description

Constant speed reversal driving device for non-dig pipeline repair felt and driving method using the same {Constant speed reversal driving device for non-dig pipeline repair felt and driving method using the same}

The present invention relates to a constant speed reversal driving device for non-dig pipeline repair felt and a driving method using the same. More specifically, the present invention relates to a pipeline repair felt with a hot melt film attached to the inner surface in a non-dig method for pipelines with a length of 300 meters or more. The present invention relates to a constant speed reversal device for non-dig pipeline repair felt for reversing and traveling at a constant speed a felt inversion device for repairing a pipeline by melting and reversing the inner diameter of the pipe in the longitudinal direction and an attachment method using the same.

In general, old water and sewage and industrial (gas, electricity, communication, etc.) pipes buried underground gradually deteriorate over time, and in the case of water and sewage pipes in particular, corrosion occurs, causing water leaks, soiling, and environmental pollution. causes. To repair these old pipes, non-dig pipe repair methods have recently been preferred instead of excavation-based pipe replacement or repair.

The non-dig pipe repair method is a method of inserting a repair tube into an old buried pipe that has cracks, etc., without digging the ground, and forming a new composite pipe on the inner wall of the water supply and sewage pipe. This non-dig pipe repair method is a waterproofing of PP or PE material at one end of the non-woven fabric, as confirmed in Republic of Korea Patent No. 10-1632286, “Non-dig water supply and sewerage overall repair device and method,” which is a patent document of the prior art literature. This is a method of attaching and fixing a repair tube (also called repair felt), which has a film layer (or coating layer) and a thermosetting resin epoxy-based adhesive resin film layer on the other end, to the inside of an old buried pipe. That is, after entering the repair tube into the buried pipe with the adhesive resin film layer on the inside and the waterproof coating film layer on the surface, air pressure is applied so that the adhesive resin film layer, which was on the inner side, is reversed to the surface, forming the inner wall of the buried repair pipe. This is a method of attaching a repair tube to the inner wall of the buried pipe by applying high-temperature steam to harden and bond it.

However, repair tubes containing an epoxy-based adhesive resin film layer harden slowly even at room temperature, so they require refrigerated storage and transportation, and there are limitations on the time (pot life) for pipe repair through reversal work. , after inverting the repair tube in the pipeline, additional steam injection work for heat curing was required, which complicated the repair construction procedure and increased costs.

To solve this problem, a repair felt has recently been developed and used in which a hot melt film, a thermoplastic resin, is replaced with an adhesive resin film layer instead of an epoxy-based adhesive resin film, which is a thermosetting resin. The repair felt with a hot melt film layer can be transported and stored at room temperature and has no particular limitations on pot life. The repair felt moving along the length direction inside the pipe is reversed and the hot melt film layer is gradually exposed from the inside to the outside. It has the advantage of being able to be partially melted and immediately attached to the pipe and then bonded through natural cooling, so the frequency of its use has been increasing recently.

However, in the case of this non-dig piping attachment repair method using repair felt, if the reversal speed of the repair felt using the air pressure of the felt inversion device is too fast, the melting time of the exposed hot melt film layer portion is reduced and melting does not occur properly. Problems may arise where it is not properly attached to the inner wall of the pipe. On the other hand, if the reversal speed is too slow, the driving member of the felt reversal device that releases the repair felt operates at a relatively high speed, so the length of the inverted felt is relatively long compared to the length of the pipe, resulting in the felt not being attached evenly or sagging. There is a problem that attachment defects may occur due to this.

The reversal speed of this repair felt is the reversal pressure corresponding to the felt adhesion force caused by the air pressure applied to the repair felt through the felt reversal device and the rotational force of the driving member that releases the repair felt stored in the loading box or tank of the felt reversal device. It is determined by the mutual forces between them. If the reversal pressure due to pneumatic pressure is equal to the rotational force of the driving member or is larger or smaller within the tolerance range, stable adhesion of the reversal felt to the inner wall of the pipe is possible through constant speed reversal travel of the repair felt, but otherwise, the above-described adhesion problem occurs. will occur.

However, repair felt, which is used for the repair of pipes with a length of more than 300 m, is loaded into a loading box according to the length of the repair pipe, and as it is released and moves along the pipe and is reversed, the traction load increases and decreases after more than half the distance. . Therefore, if the same air pressure is maintained, the reversal pressure rises sharply at the moment it passes more than half the distance or when it passes the curved part of the pipe and the flat part, regardless of the distance, due to the reduction in the traction load, resulting in a constant speed reversal with the rotational force of the driving member. It grows beyond the tolerance range for driving. This causes low-load rotation or no-load free rotation of the driving member, which is usually equipped with a motor, causing excessive loosening or free loosening of the repair felt, and the repair felt is reversed too quickly, resulting in poor attachment. There is. However, air pressure control is currently being adjusted manually by workers, so the air pressure is adjusted in response to changes in the reversal pressure, thereby stably attaching the reversal felt through constant speed reversal travel within the tolerance range of the rotational force of the driving member. There is a problem that the work is not easy.

Republic of Korea Patent No. 10-1632286

Therefore, the problem to be solved by the present invention is to solve the above problems and ensure constant speed reversal running of the felt inversion device during non-dig pipeline repair work using repair felt with a hot melt film layer, thereby stably attaching the inversion felt to the inner wall of the repair pipeline. The aim is to provide a constant speed reversal driving device for non-dig pipe repair felt that can be attached and a driving method using the same.

The objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the description below.

In order to solve the above problems, the constant speed reversal traveling device for the no-dig pipe repair felt according to the present invention includes a felt reversal device that inverts the repair felt equipped with a hot melt film using air pressure and supplies it to the repair pipe through a driving member; It can be used with an inverted felt heating device that supplies heat to the hot melt film to melt it and attach it to the inner wall of the repair pipe while maintaining a certain distance from the inverted felt that is inverted in the repair pipe, and is applied to the repair felt. A reversal felt speed measuring unit that measures the reversal speed of the reversal felt at which the hot melt film inside is inverted to the surface by the falling air pressure, and a reversal felt status display unit that displays the current running state of the reversal felt including the reversal speed. , a driving member load application unit that applies a load to the driving member to converge to a preset output load below the rated capacity of the driving member, and the driving member and the driving member based on the current running state of the inversion felt. It includes a reversal felt constant speed control unit that controls the load application unit to ensure constant reversal travel of the reversal felt.

The inversion felt speed measuring unit has a guide member coupled to one end and a rotating portion capable of rotating at a predetermined angle, and is coupled to the other end of the guide member, and the rotating portion rotates at a predetermined angle according to the tension of the repair felt during inversion. It includes a felt contact roller that rotates while being in contact with one surface of the repair felt, and an inverted felt speed measurement sensor provided at one end of the felt contact roller to measure the rotational speed of the rotating felt contact roller in real time. do.

The inversion felt constant speed control unit checks the inversion speed of the inversion felt measured by the inversion felt speed measurement unit and compares the inversion pressure of the inversion felt by air pressure with the current output load measured from the felt driving member to pre-store the inversion felt. Based on the control algorithm, the rotational speed of the felt driving member can be adjusted to ensure constant speed reversal running of the inversion felt.

The inverted felt constant speed control unit may apply a predetermined load to the felt driving member so that the driving member load application unit converges to the predetermined output load when the current output load of the felt driving member is less than a predetermined output load.

The driving member load application unit is preferably configured as a clutch device.

On the other hand, the driving method using a constant speed reversal driving device of the non-dig pipe repair felt according to the present invention for solving the above problem is to use the reversal felt speed measuring unit during felt reversal work to determine the reversal speed of the repair felt. Measuring, measuring the current output load of the felt driving member, determining whether the measured current output load is less than a preset predetermined output load, and, as a result of the determination, the current output load is the preset output and applying a predetermined load to the felt driving member to converge to a preset predetermined output load when the load is smaller than the load.

As a result of the determination, if it is determined that the current output load is not less than the preset output load, the step of determining that the reversal felt is traveling at a constant speed and continuously performing a constant speed reversal operation of the reversal felt may be further included.

As described above, according to the constant speed reversal driving device for felt for non-dig pipeline repair and the driving method using the same according to the present invention, the constant speed reversal travel device is properly controlled during non-dig pipeline repair work to ensure constant speed reversal driving of the felt reversal device, thereby ensuring reversal. There is an advantageous effect in that the felt can be stably attached to the inner wall of the repair pipe.

1 is an overall schematic configuration diagram of a constant-speed reversal attachment system including a constant-speed reversal travel device for a no-dig pipeline repair felt according to the present invention;
Figure 2 is an enlarged view of the constant speed reversal traveling device of the felt for trenchless pipeline repair according to the present invention shown in Figure 1;
Figure 3 is a front and side view of the reversal felt speed measuring part, which is a main part of the constant speed reversal traveling device for the non-dig pipe repair felt according to the present invention shown in Figure 2;
Figure 4 is an enlarged view of the heating member, which is a part of the inversion felt heating device, which is a part of the constant speed inversion attachment system for the no-dig pipe repair felt according to the present invention shown in Figure 1;
Figure 5 is an enlarged view of the heating member traction portion and the wire winding portion of the inversion felt heating device, which is a component of the constant-speed inversion attachment system including the constant-speed inversion travel device for the no-dig pipe repair felt according to the present invention shown in FIG. 1;
Figure 6 is a state diagram showing the process in which the repair felt that continuously enters the inside of the pipe by air pressure is reversed and the inverted felt is gradually attached to the inner wall of the pipe while maintaining a certain distance from the heating member.
Figure 7 is a flow chart sequentially showing an attachment method using a constant-speed reversal attachment system including a constant-speed reversal travel device for the no-dig pipeline repair felt according to the present invention.

Specific details regarding embodiments of the present invention are included in the detailed description and drawings.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete, and those skilled in the art It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims.

Like reference numerals refer to like elements throughout the specification. Embodiments described in this specification will be explained with reference to the ideal configuration diagram, enlarged view, front view, side view, state diagram, and flow chart of the present invention.

Hereinafter, with reference to the attached drawings, a constant speed reversal driving device for felt for non-dig pipeline repair according to the present invention and a driving method using the same will be described in detail.

Prior to the description, the constant speed reversal driving device for the non-dig pipeline repair felt according to the present invention and the driving method using the same are the constant speed reversal attachment system for the non-dig pipeline repair felt filed by the same applicant as the present invention and the attachment using the same. Since this is a partial configuration and partial step of the method, for convenience of explanation, it will be explained together with the entire attachment system and attachment method.

First, with reference to FIGS. 1 to 6, the constant-speed reversal attachment system including the constant-speed reversal travel device 200 of the felt for trenchless pipeline repair according to the present invention will be described in detail.

Figure 1 is an overall schematic diagram of a constant-speed reversal attachment system including a constant-speed reversal travel device for the no-dig pipeline repair felt according to the present invention, and Figure 2 is a schematic diagram of the non-dig pipeline repair felt according to the present invention shown in Figure 1. An enlarged view of the constant speed reversal traveling device, FIG. 3 is a front and side view of the reversal felt speed measuring part, which is an essential part of the constant speed reversing traveling device of the felt for non-dig pipe repair according to the present invention shown in FIG. 2, and FIG. 4 is shown in FIG. 1. Figure 5 is an enlarged view of the heating member, which is a part of the inversion felt heating device, which is a part of the constant-speed inversion attachment system of the non-dig pipe repair felt according to the present invention, and Figure 5 is an enlarged view of the non-dig pipe repair felt according to the present invention shown in Figure 1. An enlarged view of the heating member traction portion and wire winding portion of the inversion felt heating device, which is a component of the constant speed inversion attachment system including the constant speed inversion traveling device, and Figure 6 shows the repair felt continuously entering the inside of the pipe by air pressure. This is a state diagram showing the process in which the inverted felt is gradually attached to the inner wall of the pipe while being inverted and maintaining a certain distance from the heating member.

As shown in Figures 1 to 6, the constant-speed reversal attachment system including the constant-speed reversal traveling device 200 of the non-dig pipe repair felt according to the present invention is mainly used for non-dig pipes such as water and sewerage buried in the lower part of the road. It is used for repair by inverting the repair felt and attaching it to the inner wall of the pipe 10 requiring repair, and further includes a felt inversion device 100 and an inversion felt heating device 300.

The felt inversion device 100 is a device for inverting the repair felt 20 used for non-dig pipe repair. The repair felt loading box 110 is usually installed in a vehicle for the convenience of transportation and repair work. , including a first power supply unit 120, an air compressor 130, a felt driving member 150, and an inverter 170.

The repair felt loading box 110 is also called an inversion tank, and the repair felt 20 is wound and accommodated in a roll type on the repair felt transfer roller 112 through the repair felt discharge portion 114 provided at one end. . At one end of the repair felt discharge portion 114, the end of the repair felt 20 wound along the circumference and the other end of the guide tube 116 are bound to one end of the repair pipe by the pipe binding device 80. These are bound together by a known binding device such as a clamp.

The first power supply unit 120 may be an external power source, but is usually provided with the vehicle's own engine or generator for convenience of portability and movement, and provides driving power to drive various equipment provided in the felt inversion device 100. supply.

The air compressor 130 compresses and stores air, and then transfers the compressed air to the repair felt 20 through the repair felt discharge portion 114 by the operator's operation of the air pressure control unit 132.

The guide tube 116 is made of synthetic resin or fabric made of a flexible material with a predetermined strength and is inverted by using the air pressure generated by the compressed air delivered from the air compressor 130 to invert the repair felt 20 fixed at one end. The inverted felt (21) is guided into the interior of the repair pipe (10).

The felt driving member 150 rotates the repair felt transport roller 112 in one direction using power supplied from the first power supply unit 120 to unwind the wound repair felt 20 and perform a reversal operation using pneumatic pressure. The inverted felt (21) is supplied into the repair pipe (10). In this embodiment, the felt drive member 150 is provided as a drive motor that drives the drive chain 152 interconnected with the felt transport roller 112 for repair, and is a drive motor whose speed is adjusted by a control signal from the inverter 170. It is provided.

The repair felt 20, also called a repair tube, has a circular cross-section and is wound on the repair felt transfer roller 112 so that the cross-section is folded to maintain a rectangular shape. In this embodiment, the repair felt 20 is a resin film adhesive to the other end (inner surface) of a non-woven fabric 22 having a waterproof film 24 made of PP or PE attached to one end (surface), and is an epoxy-based thermosetting resin. A thermoplastic hot melt film 26 is provided to be formed instead of the synthetic resin film.

Therefore, the inverted felt 21, which was inverted to have a circular cross section from the state in which the cross section was folded into a rectangular shape by the air pressure applied to the fixed end of the repair felt 20, is inverted to have a circular cross section, as shown in FIG. 6, the hot melt on the inner side is The film 26 is inverted to the surface and melted on the inner wall of the buried repair pipe 10 by the inversion felt heating device 300, which will be described later, and then hardened by natural cooling by air supplied from the air compressor 130. As this is done, adhesion progresses gradually along the longitudinal direction of the pipe 10, thereby completing the entire repair of the pipe 10.

Next, the constant speed reversal traveling device 200 of the non-dig pipe repair felt according to the present invention is such that the reversal speed of the reversal felt 21, which is reversed by the air pressure applied to the repair felt 20, can achieve a constant constant speed. A device for controlling the repair felt reversal device 200, comprising a reversal felt speed measuring unit 210, a reversal felt status display unit 230, a reversal felt constant speed control unit 250, and a drive member load application unit 270. .

The inversion felt speed measuring unit 210 measures the inversion speed of the inversion felt 21, which is inverted by air pressure and attached to the inner wall along the longitudinal direction of the maintenance pipe 10. For this purpose, the inverted felt speed measuring unit 210 is provided with a rotating part 212, a guide member 214, a felt contact roller 216, and an inverted felt speed measuring sensor 218.

The rotating portion 212 is provided as a white paper axis coupled to the vicinity of the repair felt discharge portion 114 capable of rotating at a predetermined angle, and is coupled to the felt contact roller 216 through the guide member 214.

The felt contact roller 216 is provided as a rotating shaft type, and the rotating part 212 rotates at a predetermined angle according to the tension of the repair felt 20, which is inverted, and is in surface contact with one side of the repair felt 20. rotates to

The inverted felt speed measurement sensor 218 is provided at one end of the felt contact roller 216 and measures the rotational speed of the rotating felt contact roller 216 in real time. When the rotational speed of the felt contact roller 216 is measured, the moving distance per hour of the inverted felt 21, that is, the reversal speed, is measured in real time. In this embodiment, the inverted felt speed measurement sensor 218 continuously monitors the rotational speed of the felt contact roller 216 and converts it into an electrical signal to be used in the inverted felt status display unit 230 and the inverted felt constant speed control unit 250, which will be described later. A known encoder that transmits to is used, but of course, other known speed measurement sensors may be used.

The inversion felt status display unit 230 includes the inversion speed of the inversion felt 21 measured by the inversion felt speed measurement sensor 218, converted to an electrical signal, and transmitted, and the current output load of the felt drive member 150, which can be configured as a drive motor. It monitors in real time and displays it so that workers can visually check it. In addition, the inversion felt status display unit 230 can display the inversion pressure, which is the felt adhesion force according to the air pressure applied to the cross-sectional area of the current repair pipe 10, which is also transmitted to the inversion felt constant speed control unit 250, so that the worker can check it. To this end, the inverted felt status display unit 230 may be provided with known display means such as a general digital signal display unit or an analog signal display unit such as an ampere meter gauge.

The inverting felt constant speed control unit 250 operates the inverter 170 or The driving member load application unit 270 is controlled to enable the inversion felt constant speed traveling operation. That is, the reversal felt constant speed control unit 250 checks the reversal speed of the reversal felt 21 measured by the reversal felt speed measurement sensor 218 in a general reversal work progress situation and detects the reversal speed due to the air pressure artificially applied by the operator during the reversal work. By comparing the inversion pressure of the inversion felt 21 and the rotational output load corresponding to the rotational force measured from the felt driving member 150, the inverter 170 is controlled based on a pre-stored control algorithm to provide an appropriate rotational predetermined output load control signal. By applying , the rotational speed of the felt driving member 150 of the felt inversion device 100 is appropriately adjusted to ensure constant speed running of the inversion felt 21.

Meanwhile, as mentioned in the technology behind the invention, the traction load of the repair felt 20 due to the application of specific air pressure is momentary depending on the length of the reversal operation of the pipe 10 or the shape of the pipe during the reversal process. In this case, if the air pressure remains the same, the reversal pressure becomes relatively large, so the current output load of the felt driving member 150 becomes smaller than the preset predetermined output load, and this increases the reversal speed. Excessive loosening or free loosening of the felt (20) may occur, which may cause adhesion defects.

To solve this problem, a driving member load application unit 270 was added to the constant speed reversal travel device 200 according to the present invention, and in this embodiment, the driving member load application unit 270 is not a brake device but a known clutch. (clutch) device was used. The inverted felt constant speed control unit 250 causes the driving member load application unit 270 to load the driving member 270 according to a pre-stored algorithm when the current output load is less than a preset output load below the rated capacity of the felt driving member 150. A predetermined load is applied in a direction opposite to the rotation direction of the felt driving member 150 so as to converge to a preset predetermined output load. Accordingly, the felt driving member 150 rotates with a preset output load due to the predetermined load applied by the driving member load application unit 270, so that the excessive loosening or free loosening phenomenon of the repair felt 20 is eliminated. This ensures constant speed reversal running of the reversal felt 21.

Meanwhile, the inversion felt constant speed control unit 250 allows the operator to manually check the inversion felt status display unit 230 while omitting the automatic load application control function described above so that the current output load converges to a preset predetermined output load. An artificial load may be applied in a direction opposite to the rotation direction of the felt driving member 150.

Unlike the present embodiment, the brake device can only apply (ON) and disapply (OFF) the load, so it is operated in a direction opposite to the rotation direction so as to have a predetermined output load less than the rated capacity of the felt driving member 250. Application of rotational load is impossible. On the other hand, the clutch device can adjust the applied amount when applying a load, thereby enabling rotation of a preset output load below the rated capacity of the felt drive member 250.

In this embodiment, a mechanical friction clutch made of leather was used as the clutch device, but it is not limited to this, and of course, an engagement clutch, other known friction clutches, or electromagnetic clutches may be used.

On the other hand, if the reversal pressure is smaller than the rotational force, the output load of the rotating felt drive member 130 increases, and if the current output load becomes larger than the preset preset output load, the operator may use the reversal felt status display unit 230 ), you can manually increase the air pressure to increase the reversal pressure so that the current output load converges to the preset output load, thereby making the constant-speed reversal driving operation sustainable.

On the other hand, the inverted felt heating device 300 supplies heat to the hot melt film 26 while maintaining a certain distance ('d') from the inverted felt 21 that is inverted within the repair pipe 10, thereby forming the hot melt film ( 26) is melted and attached to the inner wall of the pipe 10, and then adhesion is achieved by natural cooling. For this purpose, the inverted felt heating device 300 includes a heating element 310, a heating element traction unit 330, a second power supply unit 350, and an electric wire winding unit 370.

The heating member 310 is inserted into the conduit 10 and retracts while maintaining a certain distance ('d) from the inverted felt 21, thereby supplying heat to the hot melt film 26. Melt it. The heating member 310 includes a heating frame 311, an inverted felt heating heater (314a), a pipe inner wall heater (314b), a blower 316, a camera 318, an inverted felt temperature measurement sensor (319a), and a pipe inner wall temperature sensor. Includes a measurement sensor 319b.

The heating frame 311 accommodates other components of the heating member 310, and is provided with at least three transfer wheels 312 arranged at a predetermined angle on the front and rear circumferences.

The inverted felt heating heater 314a is disposed in front of the heating frame 311 and inverts the hot melt film ( Heat is supplied to melt the hot melt film 26), and in this embodiment, the temperature of the hot melt film 26 is heated to approximately 230° C. for smooth melt and attachment of the hot melt film 26, although the present embodiment is not limited thereto.

The pipe inner wall heating heater 314b is provided around the rear end of the inverted felt heating heater 314a, and is inverted to reduce the thermal gradient so that the molten hot melt film 26 can be easily attached to the inner wall of the pipe 10. In order to do this, it is used to preheat the inner wall of the pipe 10 in advance and maintain the preheating temperature during the inversion operation. In this embodiment, the inner wall of the pipe 10 is preheated to approximately 150° C. and the preheating temperature is set to 150° C. Maintain it.

The blower 316 circulates air through forced convection in the space between the inverted felt 21 and the inverted felt heating heater 314a so that the heat generated in the inverted felt heating heater 314a is smoothly transferred to the hot melt film 26. do.

The camera 316 photographs the front end of the inverted felt 21 and transmits the captured image to the outside, allowing the worker to retract the heating member 310 while maintaining a certain distance from the inverted felt 21 while watching the captured image. Let it happen.

The inverted felt temperature measurement sensor 319a and the pipe inner wall temperature measurement sensor 319b measure the temperatures of the inverted felt 21 and the inner wall of the pipe 10 in real time and transmit them to the outside.

The heating member traction unit 330 pulls and winds the traction wire 50 connected to the rear end of the heating frame 311 of the heating member 310 to the wire winding roller 334 by the traction motor 332. At this time, the worker can use the camera monitor unit 337, the inverted felt temperature display unit 336a, and the pipe inner wall temperature display unit 336b provided together through various signal lines 70 provided by the traction wire 50 and cable ties, etc. The traction wire 50 is towed by manually controlling the traction operation control unit 339 through the traction operation input unit 338 based on the received information.

The second power supply unit 350 may be an external power source, but is usually provided with the vehicle's own engine or generator for convenience of portability and movement, and provides driving power for driving various equipment provided in the heating member 310 through a cable. It is supplied through a power supply line (60) provided with a traction wire (50) by a tie or the like.

The wire winding unit 370 winds the power supply line 60 around the wire winding roller 374 by the wire winding motor 372 in accordance with the pulling of the traction wire 50.

Hereinafter, the driving method using a constant speed reversal travel device of the non-dig pipeline repair felt according to the present invention will be described with reference to FIGS. 1 to 7 along with the attachment method using the constant speed reversal attachment system of the non-dig pipeline repair felt according to the present invention. Please refer to and explain in detail.

Figure 7 is a flow chart sequentially showing an attachment method using a constant-speed reversal attachment system including a constant-speed reversal travel device for the no-dig pipeline repair felt according to the present invention.

The attachment method using a constant speed reversal attachment system including a constant speed reversal travel device for the no-dig pipe repair felt according to the present invention starts from the step of installing the reversal felt heating device inside the repair pipe (S100).

That is, the heating member 310 is inserted into one end of the repair pipe 10 requiring repair, and the towing wire 50, power supply line 60, and signal line 70 tied with a cable tie, etc. are connected to a tugboat using a robot, etc. It is tied, pulled, and connected to the heating member 310 located at one end.

Then, a step (S200) of closing and preheating both ends of the repair pipe is performed.

That is, after closing both ends of the repair pipe 10 using pipe binding members 80, 90, etc., the inner wall of the pipe 10 is heated to approximately 150° C. using the heating member 310 of the inverted felt heating device 300. Preheat and maintain the temperature.

Then, a step (S300) of fixing one end of the repair felt to one end of the repair pipe is performed.

That is, after opening one end of the preheated repair pipe 10, the repair felt 20 is connected to the bureaucrat binding member using the guide tube 116 so that the reversal operation by the air pressure of the repair felt 20 can be performed ( 80) and is fixed to one end of the repair pipe (10).

After this, the process of starting the reversal of the repair felt (S400) is performed.

That is, compressed air is supplied to the repair felt 20 to create air pressure, and the felt driving member 150 rotates the repair felt transport roller 112 in one direction to unwind the wound repair felt 20 and reverse it. This ongoing reversal felt (21) is continuously supplied into the repair pipe (10).

Then, a step (S500) is performed to retract the repair felt heating device while maintaining a certain distance.

That is, through the image captured by the camera 318, the inverted felt heating heater 314a of the heating member 310 retreats while maintaining a certain distance from the inverted felt 21 and generates heat in the inverted and advancing hot melt film 26. By continuously supplying and melting, it is gradually attached to the inner wall of the pipe 10 along the longitudinal direction.

Thereafter, a step (S600) of measuring the reversal speed of the repair felt, which is the start of the driving method step using the constant speed reversal traveling device of the non-dig pipe repair felt according to the present invention, is performed.

The repair felt reversal speed is measured by the reversal felt speed measurement sensor 218 and the measured value is transmitted to the reversal felt status display unit 230 and the reversal felt constant speed control unit 250.

Then, a step (S700) of measuring the current output load of the felt driving member is performed.

At this time, the current output load measured from the felt driving member 150 is transmitted to the inverted felt constant speed control unit 250, and is displayed on the inverted felt status display unit 230 so that the operator can visually check it.

Then, a step (S800) is performed to determine whether the measured current output load is smaller than a preset predetermined output load.

That is, it is determined whether the current output load measured and input from the felt driving member 150 is smaller than the output load preset to be less than the rated capacity. The judgment can be made automatically by the inversion felt constant speed control unit 250, or it can be made manually by the operator through visual confirmation through the inversion felt status display unit 230.

As a result of the determination, if the current output load is less than the preset output load, a step (S900) of applying a predetermined load to the felt driving member to converge to the preset output load is included.

That is, the driving member load application unit 270 is rotated opposite to the direction of rotation so as to have a predetermined output load less than or equal to the rated capacity of the felt driving member 250, which is preset by the inverted felt constant speed control unit 250 or the operator's load application control signal. A predetermined rotational load is applied in this direction. Through this, the felt driving member 150 rotates with an appropriate output load rather than free rotation under low load or no load, and the phenomenon of over-speed loosening or free loosening of the repair felt 20 is eliminated, allowing the reversal felt 21 to run at a constant speed. This is guaranteed.

Meanwhile, as a result of the determination, if it is confirmed that the current output load is not less than the preset output load, it is determined that the reversal felt 21 is traveling at a constant speed, and the constant speed reversal operation of the reversal felt 21 is continuously performed (S1000).

That is, the inverter 170 operates based on a pre-stored control algorithm by comparing the output load corresponding to the rotational force measured from the felt drive member 150 with the inversion pressure of the felt caused by the air pressure artificially applied by the operator during the inversion operation. By controlling to apply an appropriate rotational output load control signal, the rotational speed of the felt drive member 150 is appropriately adjusted to ensure constant speed reversal travel of the inversion felt 21 during the inversion operation.

On the other hand, if the reversal pressure is smaller than the rotational force, the output load of the rotating felt drive member 130 increases, and if the current output load becomes larger than the preset preset output load, the operator displays the reversal felt status display unit 230. By increasing the reversal pressure by increasing the air pressure while checking, the current output load can be converged to the preset output load to ensure that the constant speed reversal driving operation is sustainable.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also possible. falls within the scope of rights.

10: Pipe 20: Repair felt
21: Inverted felt
22: non-woven fabric 24: waterproof film
26: hot melt film 50: traction wire
60: power supply line 70: signal line
80, 90: Pipe closure member
100: Felt reversal device
110: Repair felt loading box 112: Repair felt transfer roller
114: Repair felt discharge portion 116: Guide tube
120: first power supply unit 130: air compressor
132: Air pressure regulator 150: Felt driving member
152: drive chain 170: inverter
200: Constant speed reversal travel device
210: Inverted felt speed measuring unit 212: Rotating unit
214: Guide member 216: Felt contact roller
218: Inverted felt speed measurement sensor 230: Inverted felt status display unit
250: Inverted felt constant speed control unit 270: Drive member load application unit
300: Inverted felt heating device 310: Heating member
311: Heating frame 312: Transfer wheel
314 a: Inverted felt heating heater 314b: Pipe inner wall heating heater
316: blower 318: camera
319a: Inverted felt temperature measurement sensor 319b: Pipe inner wall temperature measurement sensor
330: Heating member traction unit 332: Wire traction motor
334: Wire winding roller 336a: Inverted felt temperature display unit
336b: Pipe internal temperature display unit 337: Camera monitor unit
338: Traction operation input unit 339: Traction operation control unit
350: second power supply unit 370: wire winding unit
372: wire winding motor 374: wire winding roller

Claims (7)

A felt reversal device that inverts the repair felt equipped with a hot melt film using air pressure and supplies it to the repair pipe through a felt driving member, and maintains a certain distance from the inversion felt that is inverted within the repair pipe, and inverts the repair felt with the hot melt film. It can be used with an inverted felt heating device that includes a heating member including a camera to supply heat to melt it and attach it to the inner wall of the repair pipe, and a heating member traction portion that pulls the heating member from the outside of the repair pipe,
A reversal felt speed measuring unit that measures the reversal speed of the reversal felt at which the hot melt film inside is inverted to the outer surface by the air pressure applied to the repair felt,
A reversal felt status display unit that displays the current running state of the reversal felt, including the reversal speed, the reversal pressure of the reversal felt, and the current output load measured from the felt drive member,
A drive member load application unit that applies a load to the drive member to converge to a preset output load below the rated capacity of the drive member, and
A reversal felt constant speed control unit that controls the drive member and the drive member load application unit based on the current running state of the reversal felt to ensure constant speed reversal running of the reversal felt.
Includes,
The inverted felt constant speed control unit
The reversal speed of the inversion felt measured by the inversion felt speed measuring unit is checked, the inversion pressure of the inversion felt by air pressure is compared with the current output load measured from the felt driving member, and the above is based on a pre-stored control algorithm. The rotation speed of the felt driving member is adjusted to ensure constant speed reversal running of the reversal felt,
If the current output load of the felt driving member is less than the rated capacity of the felt driving member and is less than a preset predetermined output load, the driving member load application unit causes the current output load to converge to the preset predetermined output load. Applying a predetermined load in a direction opposite to the direction of rotation
Constant speed reversal travel device for felt for non-dig pipeline repair. In paragraph 1:
The inverted felt speed measuring unit
A rotating part that has a guide member attached to one end and can be rotated at a predetermined angle,
A felt contact roller coupled to the other end of the guide member and rotating in contact with one surface of the repair felt while the rotating portion rotates at a predetermined angle according to the tension of the repair felt being reversed, and
An inverted felt speed measurement sensor provided at one end of the felt contact roller to measure the rotational speed of the rotating felt contact roller in real time.
containing
Constant speed reversal travel device for felt for non-dig pipeline repair. delete delete In paragraph 1:
The driving member load application unit
clutch device
Constant speed reversal travel device for felt for non-dig pipeline repair. A driving method using a constant speed reversal driving device of the non-dig pipeline repair felt according to any one of claims 1, 2, and 5,
Measuring the repair felt reversal speed using the reversal felt speed measuring unit during the felt reversal operation,
measuring the current output load of the felt drive member;
A step of determining whether the measured current output load is smaller than a preset preset output load, and
As a result of the determination, if the current output load is smaller than the preset output load, applying a predetermined load to the felt driving member to converge to the preset output load.
containing
A driving method using a constant speed reversal driving device for non-dig pipe repair felt. In paragraph 6:
As a result of the determination, if it is confirmed that the current output load is not less than the preset output load, it is determined that the reversal felt is traveling at a constant speed and a step of continuously performing the constant speed reversal operation of the reversal felt.
containing more
A driving method using a constant speed reversal driving device for non-dig pipe repair felt.

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