KR101561515B1

KR101561515B1 - Apparatus for folding a pe lining tube for a non-digging reparing of underground pipe line

Info

Publication number: KR101561515B1
Application number: KR1020150064262A
Authority: KR
Inventors: 이현상; 강인구; 장예식
Original assignee: 주식회사 사이몬; 유라이닝(주)
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2015-10-22

Abstract

The present invention relates to an apparatus for folding a PE lining tube for the non-digging repair of an underground pipe line which includes: a folding unit (100); a heating unit (H); and a tensioning unit (200), wherein the folding unit (100), the heating unit (H), and the tensioning unit (200) are arranged sequentially in the moving direction of a circular tube (P0). The folding unit (100) first folds the circular tube (P0) passing through the inside of a C-shaped support piece (110) by pressuring one side of the outer wall of the circular tube (P0) with a pressuring roller (120) to the opposite side of the side wall in order to make the circular tube be in (b) the state of figure 1, and then folds the outcome a second time by passing the outcome between a pair of fixing rollers (132, 132) in order to make the outcome a folded tube (P2) like (c) of figure 1. The heater (H) arranged successively in the folding unit (100) softens the folded tube (P2) folded by the folding unit (100) by heating the folded tube (P2) with high temperature hot air discharged through a hot air tube (150). Lastly, the tensioning unit (200) is arranged successively in the heater (H) and transports the folded tube (P2), which is folded in a U-shape by the folding unit (100) and is heated by the hot air, by inserting the folded tube into a pair of caterpillar type upper and lower transport conveyors (210, 220) while fixing the folded tube at a thickness corresponding to the interval between the transport conveyors.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a PE lining pipe,

In particular, the present invention relates to a PE lining pipe fitting apparatus for unguided pipes, and more particularly, to a PE lining pipe for unguided pipes, which is folded into a U-shaped section and is wound around the outer periphery thereof in a U- To a PE re-lining pipe bending device.

Non-drilling repair methods are widely used for repairing damaged wrecks in the ground. In this unreinforced pipe repair method, the PE rounded lining pipe is folded into a U-shaped section in the ground and inserted into the subducting pipe in the ground. Then, compressed air is blown into the U-shaped connecting pipe to expand the U- And tightly fixed to the inner wall of the hoist tube.

A U-shaped folded lining pipe (hereinafter, referred to as a 'folded pipe') is manufactured through a process shown in FIG. 1 by using a folding device of a PE pipe having a circular cross section on the ground. An apparatus for manufacturing such a contact pipe is disclosed in Patent Document 1 below.

In the conventional lining tube folding apparatus disclosed in Patent Document 1, the back surface of the circular tube to be conveyed is bent by a pair of bending support rollers, and the outer side is pressurized by a bending presser provided on the arm pivotally rotating from the opposite side to form a U- Thereby forming a folded shape.

Such a conventional lining pipe tube folding apparatus is required to apply force to the arm directly when the operator presses the pipe with the bending pressurizing lid. Therefore, since the bending degree changes according to the strength of the force applied by the worker, It is difficult to bend.

In addition, since the lining pipe is formed of a PE material, it is difficult to fold it in a U shape by exerting force from the outside, and it is restored by the elastic force of the material even after folding.

KR20-0204739 Y1

Accordingly, in order to solve the disadvantages of the conventional lining pipe bending apparatus, the present invention is characterized in that a lining pipe having a "circular cross section" is folded into a "U-shaped cross section" It is an object of the present invention to provide a foldable lining pipe bending device.

In order to accomplish the above object, according to the present invention, there is provided a bending device for a PE material lining pipe for unguuired pipe ropes, wherein the lining pipe is formed of a circular pipe and the circular pipe is pressurized to one side of the outer wall. The unloading pipe of PE lining pipe for non-excavated pipes is composed of a lining pipe made of a circular pipe, a circular pipe which presses one side wall and folds it into a "U" shaped contact pipe, A heating device for heating by applying hot air, and a tensioning device for tensioning the joining steel pipe while pressing the joining steel pipe to a constant thickness,

The folding machine includes a fixed frame including a vertical frame and an upper / lower horizontal fixed frame; A movable frame slidably movable along the upper and lower horizontal frames; A pressurizing cylinder for moving the movable frame in a direction in which the movable frame approaches or separates from the fixed frame while being stretched or shrunk; A 'C' shaped support piece fixed to the vertical frame so as to support the one outer side wall while passing the PE re-circulation pipe in the direction of the central axis, and having an opening at the opposite side wall; The movable frame is attached to the movable frame in correspondence with the movement of the movable frame. The movable frame moves into the support piece through the opening of the support piece and presses the outer wall of the circular tube supported by the support piece, A pressurizing roller which is folded and folded by a first contact tube; And a pair of fixing rollers for pressing the primary fitting tube in the vertical direction and fixing the primary fitting tube by a secondary fitting tube of a constant thickness. A folding iron that is folded by a folding iron pipe, a heater which heats the folding iron pipe by applying hot air at a high temperature, and a tensioner which presses the folding iron pipe to a constant thickness,

The folding machine includes a fixed frame including a vertical frame and an upper / lower horizontal fixed frame; A movable frame slidably movable along the upper and lower horizontal frames; A pressurizing cylinder for moving the movable frame in a direction in which the movable frame approaches or separates from the fixed frame while being stretched or shrunk; A 'C' shaped support piece fixed to the vertical frame so as to support the one outer side wall while passing the PE re-circulation pipe in the direction of the central axis, and having an opening at the opposite side wall; The movable frame is attached to the movable frame in correspondence with the movement of the movable frame. The movable frame moves into the support piece through the opening of the support piece to press the outer wall of the circular tube supported by the support piece, A pressurizing roller for folding and molding with a guide pipe; And a pair of fixing rollers for pressing the primary fitting tube in the vertical direction and fixing the primary fitting tube by a secondary fitting tube of a constant thickness.

Further, the present invention may further comprise fixing roller interval adjusting means for adjusting the interval of the pair of fixing rollers,

Wherein the fixing roller interval adjusting means comprises: a feed screw provided along the longitudinal direction of each of the four vertical fixing frames, the both ends of which are supported by a bearing so as to be axially rotatable, A feed nut which rotatably supports the fixing rollers and is coupled to the feed screws in a threaded manner so as to adjust the gap of the fixing rollers while approaching or moving away from each other as the feed screw rotates; And a feed screw rotating means provided at an upper end of each feed screw for rotating the feed screw.

Further, the present invention is characterized in that the second joining pipe is heated and softened by high-temperature hot air blown from a plurality of hot-air pipes arranged above and below the secondary joining pipe in which the heater moves from the joining iron to the tensioner do.

Further, the present invention is characterized in that the stretching machine comprises a vertical frame and a horizontal frame; A pair of conveyor belts which are supported at both ends so as to be horizontally movable in the vertical direction on a pair of vertical frames facing each other and which are moved in an endless track manner by a motor, And conveyor belt interval adjusting means for adjusting the interval of the conveyor belts.

Wherein the conveyor belt gap adjusting means is provided along the longitudinal direction in each of the vertical frames and comprises a conveying screw bar having a double screw; Driving means for rotating said feeding screw rod; And a transfer nut coupled to both ends of the conveyor belt and coupled to the double screws of the feed screw so that the feed screw moves in a direction approaching or moving away from each other as the feed screw rotates, do.

Further, the present invention is characterized in that the support piece is made of a lining detachably coupled to the body and the body part, and the lining can be replaced with a lining having an inner diameter of any one of a plurality of lining having different inner diameters .

According to the present invention, since the lining pipe made of the circular tube is pressed on the 'C' -shaped support piece with the pressurizing roller operated by the hydraulic cylinder on the opposite side to form the contact pipe, it is possible to perform the folding molding operation efficiently And it is possible to form a contact tube of uniform quality.

In addition, the lining pipe having various diameters and thicknesses can be folded in accordance with the diameter and thickness of the wringing pipe to be folded.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a process of folding a circular pipe by a lining pipe bending apparatus according to the present invention,
Fig. 2 is a layout diagram schematically showing the overall configuration of the lining pipe bending apparatus of the present invention,
3 is a front view of a folding machine in the lining pipe bending apparatus of the present invention,
4 is a side view of the folding machine,
5 is a front view of the tensioner in the lining pipe bending device of the present invention,
Figure 6 is a side view of the tensioner of Figure 5,
7A to 7C are diagrams showing the operation of the folding and folding machine in stages.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a lining pipe bending apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a lining pipe (hereinafter, referred to as a 'circular pipe' P0) formed by folding a lining pipe of a circular cross section by a lining pipe- 1 (a) is a view of a circular tube before folding in the section " A ", and Fig. 1 (b) 1 (c) shows the shape of the U-shaped welded pipe P2 in which the expanded U-shaped welded pipe P1 is further pressed in the "C" section.

2, the lining pipe bending apparatus according to the present invention comprises a sorter 100, a heater H, and a tensioner 200, which are sequentially disposed along the conveying direction of the circular pipe .

The hooking unit 100 presses one of the outer side walls of the circular pipe P0 passing through the inside of the 'C' shaped supporting piece 110 toward the opposite side wall by the pressure roller 120, Folded, then passed between a pair of fixing rollers 132 and 132, and is secondarily folded with a contact iron pipe P2 as shown in Fig. 1 (c). The heater H disposed continuously to the vacuum degassing machine 100 heats the vacuum degassing pipe P2 folded at the vacuum degassing machine 100 by hot hot air discharged through the hot air tube 150 to soften it. Finally, the tensioner 200 is disposed continuously to the heater H, and the welded pipe P 2, which is folded in the U-shape by the engaging device 100 and heated by the hot air, And is fixed with a thickness corresponding to the interval between the conveying conveyors while being conveyed while being sandwiched between the form / lower conveying conveyors 210 and 220.

(100):

As shown in the front view of FIG. 3 and the side view of FIG. 4, the folding device 100 includes a fixed frame composed of a vertical frame 101 and an upper / lower horizontal fixed frame 102, And a movable frame 103 which is slidably moved along the movable frame 102 and moves in a direction approaching or separating from the fixed frame in accordance with the expansion and contraction operation of the pressure cylinder 105.

The connecting device 100 presses the one side wall in the radial direction from the outside while moving the PE circular pipe P0 horizontally to form a first connecting pipe P1 having a substantially U- ) Shape and then folding the primary fitting pipe P1 to a secondary fitting pipe P2 of a certain thickness.

As shown in FIGS. 3 to 4, the folding mechanism includes a 'C' shaped supporting piece 110 supported by a rear vertical fixing frame 101 with a plurality of supporting bars 113; A pressing roller 120 attached to the movable vertical frame 103a and configured to move into and out of the supporting piece 110 through the side wall opening portion 110a of the supporting piece 110; Pressure roller operating means for slidingly moving the pressure roller (120); A pair of fixing rollers 131 and 132 for pressing the cross section 'U' -shaped primary fitting pipe P1 in the vertical direction and fixing the same by a secondary fitting pipe P2 having a constant thickness; And fixing roller interval adjusting means for adjusting the interval of the pair of fixing rollers 131 and 132.

The supporting piece 110 has one side wall fixed to the rear vertical fixing frame 101 and the other side wall is formed with an opening 110a for allowing the pressing roller 120 to move in and out along the longitudinal direction . The support piece 110 may include a body portion 111 and a lining 112 detachably coupled to the body portion. In this case, the lining 112 may be prepared as a plurality of lining having various diameters It can be replaced by a lining of a suitable diameter according to the diameter of the round pipe to be folded.

The pressure roller operating means includes a plurality of pressure rollers 120 fixed to the upper and lower horizontal fixing frames 102 so as to be slidable with respect to the upper and lower horizontal fixing frames 102 of the fixing frames, The pressing roller 120 is moved toward the supporting piece 110 as the one end is connected to the fixed frame and the other end is connected to the movable frame 103 to expand and contract, And a pressing cylinder 105 which moves in a direction away from the supporting piece 110. [

As shown in Figs. 3 and 4, the fixing roller gap adjusting means is provided along the longitudinal direction of each of the four vertical fixing frames 101, and is supported by bearings at both ends so as to be rotatable about an axis, A feed screw 134 formed with a double screw in the opposite direction; Each of the fixing rollers 131 and 132 is rotatably supported and is coupled to the feed screw 134 in a threaded manner so that the feed screw 134 approaches or moves away from the feed screw 134 to adjust the gap of the fixing rollers 131 and 132 Transfer nuts 136 and 137; A sprocket SP coupled to an upper end of each of the feed screws 134; A chain (C) installed in the sprockets (SP) to simultaneously rotate the four sprockets (SP); And a motor (M) for driving the sprocket.

5, when the motor M is rotated to move the chain C in either direction, the four sprockets SP engaged with the chain C A pair of feed nuts 136 and 137 connected to the feed screw 134 in a threaded manner are moved toward and away from each other while the feed screw 134 is rotated in one direction The fixing rollers 131 and 132 are moved toward or away from each other to adjust the interval therebetween.

The connecting pipe passes through the gap between the fixing rollers 131 and 132 adjusted as described above, and is fixed to a thickness corresponding to the interval between the fixing rollers 131 and 132. [

Heater (H):

The heater H is a high temperature hot air blown from a plurality of hot air pipes 150 arranged on the upper and lower sides of the secondary fitting pipe P2 moving from the drawing machine 100 to the tensioner 200, The connecting pipe (P2) is heated and softened. As a result, the secondary fitting pipe P2 having passed through the heater H is smoothly folded by the subsequent tensioning machine 200.

Tensioner 200:

Next, the tensioner 200 is folded in a U-shaped cross section in the folding and folding machine 100, and then the secondary attachment pipe P2 heated by hot hot air in the heater H is folded by a pair of infinite- Shaped conveyor belts 210 and 220, while moving the guide pipe while fixing the guide pipe P2 to a predetermined thickness suitable for binding and fixing with a band (not shown).

5 and 6, the tensioner 200 includes a frame assembly composed of a vertical frame 201 and a horizontal frame 202, and includes a pair of longitudinal In the frames 201, a pair of endless track-type conveyor belts 210 and 220 are horizontally movable up and down along the longitudinal direction of the vertical frame 201.

In other words, each vertical frame 201 is provided with a feed screw thread 203 having a double screw in which screw directions are reversed from each other in the longitudinal direction, and each of the feed screw rods 203 is mounted on the upper horizontal frame 202 And is rotatably installed by a motor (M) and a chain (C) -sprocket (SP). The feed screws 205 and 206 are respectively engaged with the double screw threads of the feed screw rod 203 so that they move toward or away from each other along the feed screw 203 as the feed screw rod 203 rotates, The conveying nuts 205 and 206 are coupled to both ends of the conveyor belt to horizontally move the conveyor belts 210 and 220 up and down.

Therefore, the tensioner 200 smoothly fixes the secondary welded pipe P2 while moving the secondary welded pipe between the upper and lower conveyor belts 210 and 220 moving in an endless track manner.

Hereinafter, the operation of the present invention will be described with reference to Figs. 7A to 7C.

The circular pipe P0, which is extruded and conveyed from an extrusion device (not shown), is guided to the folding device 100 of the folding device of the present invention.

The circular pipe P0 is passed through the inside of the lining 112 inside the 'C' shaped support piece 110 of the drawing machine 100, as shown in FIG. 7A. Then, when the pressurizing cylinder 105 is contracted, the upper and lower movable frames 103 move toward the fixed frame along the upper / lower horizontal frame 102. The pressure roller 120 presses the other outer wall of the circular pipe P0 having one outer wall supported on the lining 112 to fold it in the form shown in Figure 7b and continue to shrink the pressure cylinder 105, As shown in FIG. 7C, the pressure roller 120 further moves toward the contact pipe, and is folded and folded by the first contact pipe P1.

As shown in FIG. 2, the first folding pipe P1 folded and folded is passed through a pair of fixing rollers 131 and 132 provided on the vertical fixing frame 101 at the end of the folding machine 100, And is folded into a thick second connecting pipe (P2).

Then, the secondary joining pipe P2 is heated and softened through the heater H, and then pressed and pressed between the pair of conveyor belts 210 and 220 of the tensioner 200, as shown in FIGS. And is then tensioned by the conveyor belts 210,

The circular pipe P0 is manufactured as a welded pipe P2 having a predetermined thickness, and is wound around a winding roll (not shown) and wound around a winding roll, do.

When the circular tube having a relatively large diameter is to be folded, the folding method is the same as that described above. However, since the diameter of the folded circular tube is large, After replacing the lining of the inner diameter, fold it in the folding machine. In this case, since the thickness after the primary folding is increased by the pressure roller 120, the interval between the fixing rollers 131 and 132 must be increased. At this time, the interval between the fixing rollers 131 and 132, And increases the number of the connecting pipes after the folding to correspond to the thickness of the secondary folding. Also, the distance between the pair of conveyor belts 210 and 220 of the tensioner 200 can be increased by widening the interval between the conveyor belts by driving the motor M in the same manner as the interval adjustment of the fixing rollers 131 and 132.

100: Folding device 101: Vertical fixing frame
102: upper / lower fixed horizontal frame 103: movable frame
103a: movable vertical frame 104: roller
105: pressure cylinder 110: C-
111: supporting body body 112: lining
113: support bar 120: pressure roller
M: Motor SP: Sprocket
C: Chain 131, 132: Fixing roller
134: feed screw 136, 137: feed nut
200: tensioner 201: vertical frame
202: horizontal frame 203:
205, 206: Feed nut 210, 220: Conveyor belt

Claims

In a folding apparatus of a PE material lining pipe for unguided pipe ropes,
The lining pipe bending apparatus is characterized in that,
(100) having a lining pipe made of a circular tube and folding the circular tube to one end side U 'shaped connecting tube by pressurizing the outer side wall, a heater (H) for heating the welding tube by applying hot air at a high temperature, And a tensioner (200) for tensioning the material while pressing the material to a constant thickness,
The attaching /
A fixed frame made up of a vertical frame 101 and an upper / lower horizontal fixed frame 102;
A movable frame 103 slidably movable along the upper and lower horizontal frames 102; A pressurizing cylinder (105) for moving the movable frame (103) in a direction in which the movable frame (103) approaches or separates from the fixed frame while expanding and contracting; C '-shaped support pieces 110 (110') having openings 110a are formed on the opposite side walls of the PE re-circulation pipe P0 so as to support the one outer side wall while passing the PE re- ); The movable frame 103 is attached to the movable frame 103 corresponding to the support piece 110 and moves into the support piece 110 through the opening 110a of the support piece 110 according to the movement of the movable frame 103 A pressing roller 120 for pressing the outer wall of the circular pipe P0 supported on the supporting piece 110 and folding the outer wall of the circular pipe P0 into a first U 'shaped first contact pipe P1; And a pair of fixing rollers 131 and 132 for pressurizing the primary fitting pipe P1 in the vertical direction and folding and fixing the primary fitting pipe P1 to the secondary fitting pipe P2 having a constant thickness,
Further comprising fixing roller interval adjusting means for adjusting the interval of the pair of fixing rollers 131 and 132,
A feed screw 134 provided along the longitudinal direction of each of the four vertical fixing frames 101 and supported at both ends by bearings so as to be rotatable about an axis and having double screws formed in opposite directions on the outer periphery; Each of the fixing rollers 131 and 132 is rotatably supported and is coupled to the feed screw 134 in a threaded manner so that the feed screw 134 approaches or moves away from the feed screw 134 to adjust the gap of the fixing rollers 131 and 132 Transfer nuts 136 and 137; And a feed screw rotating means provided at an upper end of each of the feed screws 134 to rotate the feed screw,
The tensioner (200)
A vertical frame 201 and a horizontal frame 202; A pair of conveyor belts 210 and 220 which are supported on the pair of vertical frames 201 facing each other so as to be horizontally movable in the vertical direction and are moved in an endless track by a motor, ; And conveyor belt interval adjusting means for adjusting the interval between the conveyor belts (210, 220)
The conveyor belt interval adjusting means includes a conveying screw rod 203 installed along the longitudinal direction of each vertical frame 201 and having a double screw; Driving means for rotating the feed screw 203; The conveyor belts 210 and 220 are coupled to both ends of the conveyor belt and are coupled to the double screws of the conveying screw bar 203 to move the conveyor belts 210 and 220 vertically and horizontally The transfer nuts 205 and 206,
The heater H is a high temperature hot air blown from a plurality of hot air pipes 150 arranged on the upper and lower sides of the secondary fitting pipe P2 moving from the drawing machine 100 to the tensioner 200, Wherein the connecting pipe (P2) is heated to soften the unfired pipe.

delete

The method according to claim 1,
The supporting piece 110 is composed of a body part 111 and a lining 112 detachably coupled to the inside of the body part and the lining 112 has an inner diameter of one of a plurality of lining having different inner diameters Wherein the lining is replaceable with a non-excavated pipe.