JP2003090194A - Resin buried pipe bend correcting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin buried pipe bend correcting device for correcting a bend of a resin buried pipe such as sewer pipe buried by a side cut pipe jacking burying method. SOLUTION: This resin buried pipe bend correcting device is composed of a plurality of correcting units 1 arranged on the outer periphery of a cylindrical body with a plurality of roller members 2 having the function of slidingly moving the outer periphery of the cylindrical body 1a having the prescribed length in the shaft direction while uniformly pressing and correcting the inner periphery of a resin buried pipe unit 10a to be buried outward in the radial direction, and is characterized in that the correcting units have a connecting means composed of mutually serially connectable connecting members 3, and the inside of the cylindrical body of the correcting units has a structure for at least axially taking in and out a screw unit 20 connectable in driving in series to a guiding pipe equipped with a jacking cutter on the tip.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for straightening a resin buried pipe for sewage pipes or the like, which is to be buried by a Yokobori propulsion burying method. About. 2. Description of the Related Art A conventional straightening device made of resin buried pipes, which is also called open pit mining, is buried by a burial burial method.
An example of a resin buried pipe bending straightening device for correcting a bending of a resin buried pipe is a straightening device described in Patent No. 2567822 "Bending straightening device of a buried vinyl chloride pipe". There is no resin buried pipe bending straightening device that corrects the bending of the resin buried pipe buried from the lateral direction by the construction method. [0003] The procedure of burying a resin buried pipe in the prior art by the horizontal moat propulsion burying method is described in, for example, Japanese Patent Laid-Open No. 10-2739.
Propulsion device described in 99 "Propulsion device for small-diameter pipe burial machine" (4
As shown in FIG. 3 (A), first, in the execution procedure (A), a starting shaft (30a) having a desired depth is provided at the starting point of the horizontal moat of the soil (30), and further at the end of the horizontal moat. A leading shaft (40a) provided with a reaching shaft (30b) of a desired depth and a propulsion cutter at the tip at the bottom of the starting shaft.
Is set. Next, in the execution procedure (B), as shown in FIG. 3 (B), the propulsion jack (40b) is advanced hydraulically while rotating the propulsion cutter, and the horizontal moat propulsion is started. Next, the enforcement procedure (C)
At this time, as shown in FIG. 3 (C), the propulsion jack is retracted and the screw unit (20) is inserted into the buried pipe unit (10), which is a resin buried pipe unit (10a) having a predetermined length to be buried. Is installed in the propulsion device, and is connected to the rear of the forward conduit, and the horizontal drive is continued, and the screw unit has a screw conveyor function and drives the forward conduit. In addition, the screw has the function of transporting the excavated earth and sand to the start shaft by a screw. Next, in the enforcement procedure (D), as shown in FIG. 3 (D), the operations of the enforcement procedures (B) and (C) are repeated to reach the leading conduit while burying and connecting the buried pipe unit. The shaft is reached, and the leading conduit is recovered from the reaching shaft, a series of execution procedures are completed, the screw unit incorporated therein is recovered from the starting shaft, and the resin-buried pipe unit connected to the resin buried pipe unit is connected. A buried pipe was secured. [0004] There is no resin buried pipe bending correction device for correcting the bending of a resin buried pipe which is buried by the prior art Yokobori propulsion burying method. In such a case, an abnormal curved portion deviating from a straight cylindrical shape occurs, and there is a problem that a fluid such as sewage does not have a smooth flow gradient and sludge or the like stays. [0005] In order to solve the above-mentioned problems, a resin buried pipe bending straightening device according to the present invention comprises a cylindrical body having a predetermined length, the outer circumference of which is made of resin to be buried. The inner circumference of the buried pipe unit is composed of a plurality of straightening units that can be connected in series and has a function of sliding in the axial direction while slidably pressing the inner circumference evenly in the radial direction. It is characterized by having a structure used for the Yokobori propulsion burial method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The resin buried pipe bending straightening device of the present invention is characterized in that the outer circumference of a metal tube made of stainless steel or the like having a predetermined length has the inner circumference of the resin buried pipe unit to be buried. Is composed of a plurality of correction units having a function of slidably moving in the axial direction while correcting the pressure evenly to the outside in the radial direction, and having a plurality of roller members disposed on the outer periphery of the cylindrical body. The straightening unit has connecting means consisting of connecting members which can be connected in series to each other, and the inside of the cylinder of the straightening unit can be connected in series with a front pipe equipped with a propelling cutter at the tip, which can be used in the Yokobori propulsion burying method. The unit is characterized in that it has a structure that can be freely inserted and removed at least in the axial direction. In the bending correction device for a buried pipe made of resin according to the present invention, the method of arranging the plurality of roller members on the outer periphery of the cylindrical body includes the steps of forming a plurality of predetermined openings on the outer periphery near both ends of the cylindrical body. In the radial direction of the cylindrical body, in the vicinity of both ends in the rotational direction of the rolling element, the outer circumference of which is coated with a flexible material such as hard rubber, inside and outside a pair of mounting holes of the corrosion-resistant metal body of the roller member. A plate-shaped mounting member is sandwiched by using a spacer having a predetermined thickness that can be adjusted in height, and the end of the opening that is opposed to the opening in the axial direction is sandwiched between the inner and outer ends of the mounting member. -By tightening, the roller member can be disposed in each opening. In the apparatus for straightening bent pipes made of resin according to the present invention, a plurality of connecting holes are provided at both ends of a cylindrical body of the straightening unit as connecting means capable of connecting the straightening units in series with each other. A connection member can be connected to each of the opposite connection holes of the straightening unit by using connection members, and the connection members are provided with mutually reverse screw grooves at both ends of the square bar, and bolts that fit into the screw grooves are provided. A protrusion is formed at one end to be inserted and locked in the connection hole, and is used as a locking portion, and is inserted and locked in the two opposite connection holes by rotation of the square bar.
The pair of locking portions can be tightened and released freely, and the adjacent correction units can be connected and released freely. [0009] The method of use of the resin buried pipe bending straightening device of the present invention is as follows. The straightening unit is inserted into the inner periphery of the resin buried pipe unit to be buried to form a buried pipe unit. While connecting the units, a plurality of the buried pipe units were buried by the Yokobori propulsion burying method, and after a predetermined period of time, the soil around the buried / connected resin buried pipe unit became familiar and sufficiently solidified. After that, the connecting means of the connected straightening unit is pulled out while being sequentially released, and the straightened, buried and connected resin buried pipe unit having a continuous linear curved surface in the axial direction is secured. . The dimensions of the resin buried pipe bending straightening device of the present invention correspond to a resin buried pipe unit having a predetermined outer diameter, thickness, and unit length, such as a vinyl chloride pipe, and the outer diameter of the rolling element of the roller member. Is selected and adjusted and applied by combining the outer diameter and thickness of a cylinder of a predetermined unit length, and the screw unit has a structure that can be freely inserted and removed at least in the axial direction. Can be used. In the method of burying and sewing a sewer pipe or the like to which the resin burying pipe bending straightening device of the present invention can be applied, a propulsion device described in JP-A-10-273999 "Propulsion device for small-diameter pipe burying machine" can be used. . The resin buried pipe bending straightening device of the present invention comprises:
A straightened, buried, and connected resin buried pipe unit with a straight, continuous internal curved surface that is straight in the axial direction can be secured, so fluid such as sewage flowing through the resin buried pipe can be secured.
It provides a flow gradient that flows smoothly and has the effect of preventing sludge and the like from staying. FIG. 1 is a block diagram of an embodiment of the present invention.
1A is a partially cutaway front view of a state in which a resin buried pipe bending straightening device according to an embodiment of the present invention is used, and FIG. FIGS. 2A and 2B are enlarged front views of a part of a straightening unit of a resin buried pipe bending straightening device showing an embodiment of the present invention, and FIG. It is a part enlarged side view. FIG. 3 shows an embodiment of the present invention, in which a resin buried pipe bending straightening device can be applied.
(A), (B), (C) and (D). DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. As shown in FIG. 1 and FIG. 2, a resin buried pipe bending straightening device comprises a metal cylinder (1) made of a predetermined length of stainless steel or the like.
The outer circumference of a) is a resin buried pipe unit (10
a) a plurality of correction units having a function of slidably moving in the axial direction while uniformly correcting the inner circumference of a) radially outward, and having a plurality of roller members (2) disposed on the outer circumference of the cylindrical body; (1) The straightening unit has connecting means consisting of a connecting member (3) which can be connected in series with each other, and the inside of the cylindrical body of the straightening unit has a propelling cutter at the tip used for the Yokobori propulsion burying method. The screw unit (20), which can be connected in series to a front conduit equipped with a, has a structure that can be freely inserted and removed at least in the axial direction. In the resin straightening pipe bending correcting apparatus according to the embodiment of the present invention, the method of disposing the plurality of roller members (2) on the outer periphery of the cylindrical body (1a) is as shown in FIG. Predetermined openings (1b) on the outer periphery near both ends, four each
The rolling element (2a) whose outer periphery is coated with a material having flexibility such as hard rubber, near the both ends in the rotation direction, inside and outside a pair of mounting holes of the corrosion-resistant metal body of the roller member. A plate-shaped mounting member (2b) is sandwiched by using a spacer having a predetermined thickness whose height in the radial direction can be adjusted, and the thickness ends of the openings facing each other in the axial direction are fixed to the inside and outside. The roller member was disposed at each opening by clamping and tightening at the end of the mounting member. In the apparatus for straightening a buried pipe made of resin according to an embodiment of the present invention, as shown in FIG. 1, both ends of a cylindrical body (1a) of the straightening unit are used as connecting means for connecting the straightening units (1) in series with each other. A plurality of connecting holes (1c) are provided in the part, and the connecting units (3) can be connected to the opposing connecting holes of the correction units that are adjacently connected to each other by using a connecting member (3). The opposite ends of the square rod (3b) are provided with mutually reverse threaded grooves, and one end of a bolt that fits the threaded groove is formed with a convex portion that is inserted and locked in the connection hole.
a), and by rotation of the square bar, a pair of locking portions inserted and locked in the two opposing connection holes can be tightened / released, and the adjacent correction unit can be connected / released. As shown in FIG. 1, the method of using the resin buried pipe bending straightening device according to the embodiment of the present invention is as follows: the straightening unit (1) is replaced with a resin buried pipe unit (10a) to be buried.
A plurality of the buried pipe units are buried by the Yokobori propulsion burying method while connecting the resin buried pipe unit and the correction unit to each other to form a buried pipe unit (10). After a certain time, after the soil (30) around the buried / connected resin buried pipe unit is familiar and sufficiently solidified, the connecting means of the connected straightening unit are pulled out while sequentially releasing the straightening means, and a straight line is formed in the axial direction. A straightened, buried and connected resin buried pipe unit having an inner diameter curved surface was secured. The dimensions of the resin buried pipe bending straightening apparatus of the embodiment of the present invention are as follows: a resin buried pipe unit (10a) having a unit length of 1 m, comprising: PVC pipe: outer diameter: 300 mm, inner diameter: 280 mm. On the other hand, roller member (2)
The outer diameter of the rolling element (2a) is 40 mm, and the outer diameter of the stainless steel cylinder (1a) having a unit length of 1 m is 240.
mm, thickness: 4mm, and maximum outer diameter: 200
The screw unit (20) of mm or less has a structure that can be freely inserted and removed at least in the axial direction, and a commercially available member is used for the roller member and the connecting member (3). The procedure for performing the Yokobori propulsion burying method, to which the resin buried pipe bending straightening device according to the embodiment of the present invention can be applied, is described in the above-mentioned Japanese Patent Application Laid-Open No. 10-273999, entitled "Propulsion device for small diameter pipe burying machine". Using (40), as shown in FIGS. 3 (A) and (B), the above-mentioned enforcement procedures (A) and (B)
Then, in the enforcement procedure (C), as shown in FIG. 3 (C), the propulsion jack is retracted, and the straightening unit (1) is replaced with the resin buried pipe unit (10a) to be buried.
Buried pipe unit (10), and the buried pipe unit incorporating the screw unit (20) in the buried pipe unit is installed in the propulsion device. The screw unit has a screw conveyor function. The screw unit conveys the rock excavated to the starting shaft (30a) by a screw while driving and moving the tip conduit. It also has functions. Next, in the enforcement procedure (D), as shown in FIG. 3 (D), the operations of the enforcement procedures (B) and (C) are repeated, and while burying and connecting the buried pipe unit, the leading pipe is connected to the arrival shaft. (30b) and withdrawing the leading conduit from the reaching shaft, completing a series of execution procedures, retrieving the built-in screw unit from the starting shaft, securing the Yokobori propulsion burial method, and After a predetermined period of time, the soil around the buried / connected resin buried pipe unit has become familiar and sufficiently solidified, and then the connecting means of the connected straightening units are pulled out while being sequentially released, straightened, straightened and buried / connected. A resin buried pipe as the resin buried pipe unit was secured. The present invention is embodied in the form described above and has the following effects. [0021] The resin straightening pipe bending straightening device of the present invention comprises:
A straightened, buried, and connected resin buried pipe unit with a straight, continuous internal curved surface that is straight in the axial direction can be secured, so fluid such as sewage flowing through the resin buried pipe can be secured.
It provides a flow gradient that flows smoothly and has the effect that sludge and the like do not stay. The resin buried pipe bending straightening device of the present invention comprises:
The simple structure allows it to be used for resin buried pipes of various diameters, is easy to repair and adjust, and can use various commercially available roller members and connecting members, so that it can be manufactured at low cost and can be procured many times. It has an effect that can be used for buried construction methods.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (A) is a partially cutaway front view of a longitudinal section of a resin buried pipe bending straightening apparatus in use according to an embodiment of the present invention.
(B) is a partially cutaway cross-sectional view thereof. FIGS. 2A and 2B are enlarged front views of a partially omitted main part of a straightening unit of a resin buried pipe bending straightening apparatus showing an embodiment of the present invention, and FIG. Part enlarged side view. FIG. 3 shows an embodiment of the present invention, in which a resin buried pipe bending straightening device can be applied, and a Yokobori propulsion burying method is applied.
(A), (B), (C) and (D). DESCRIPTION OF SYMBOLS 1 Straightening unit 1a Cylindrical body 1b Opening 1c Connecting hole 2 Roller member 2a Rolling element 2b Mounting member 3 Connecting member 3a Locking portion 3b Square rod 10 Embedded pipe unit 10a Resin embedded pipe unit 20 Screw unit Reference Signs List 30 soil 30a starting shaft 30b reaching shaft 40 propulsion device 40a forward conduit 40b propulsion jack

Claims (1)

Claims: 1. An outer circumference of a cylindrical body (1a) having a predetermined length uniformly presses and corrects an inner circumference of a resin buried pipe unit (10a) to be buried radially outward. It comprises a plurality of correction units (1) having a plurality of roller members (2) arranged on the outer periphery of the cylindrical body and having a function of slidably moving in the axial direction, and the correction units can be connected to each other in series. Connecting member (3)
At least a screw unit (20) having a connecting means consisting of: A resin straightening pipe bending straightening device characterized by having a structure that can be freely taken in and out in the axial direction.