JP7345386B2 - pipe making machine - Google Patents

Description

The present invention includes a main body, a forming mechanism for forming a rehabilitated pipe by winding a band-like pipe rehabilitation member spirally around the inner surface of a pipe conduit, and The present invention relates to a pipe making machine that is provided with a traveling mechanism that travels on the inner surface of the pipe or on the surface of the rehabilitated pipe formed by winding the pipe rehabilitation member.

Patent Document 1 discloses a pipe making machine 100 that forms a tubular body 200 by spirally winding a strip 1 and a joiner 2 around the inner surface (ceiling, side wall, floor) of an existing pipe P on a vehicle body 60. In addition, each structure and each code|symbol in the description of the said background art are those in patent document 1.

The strip 1 and the joiner 2 are made of synthetic resin such as hard vinyl chloride.

The pipe making machine 100 includes a fitting unit 30 and a feeding unit 40, and indirectly connects the strips 1, which are spirally wound at a predetermined pitch on the inner surface of an existing pipe P, with a joiner 2. Specifically, the fitting parts 2c provided on both sides along the longitudinal direction of the joiner 2 are press-fitted into the fitting parts 1c provided on both sides along the longitudinal direction of the strip 1. A tubular body 200 is formed by connecting the strip 1 and the joiner 2.

The pipe making machine 100 is equipped with wheels 65 at the four corners of a vehicle body 60, and can run in the axial direction of the existing pipe P by rotating the wheels 65 with the power of a drive source 64.

By the way, in order for the fitting part 1c of the strip 1 and the fitting part 2c of the joiner 2 to be properly fitted, the rollers 31a and 31b of the fitting unit 30 must properly orient the joiner 2 toward the strip 1. It is necessary to apply pressure, and at that time, it is necessary to run the pipe making machine 100 to align the rollers 31a and 31b to appropriate positions.

However, during the winding operation of the strip 1 and the joiner 2, a force in the direction opposite to the winding direction of the strip 1 is acting on the pipe making machine 100. Further, this work is carried out while the sewage is still flowing through the existing pipe P. For these reasons, if the wheels 65 of the pipe making machine 100 slip, or if the inner surface of the existing pipe P on which the tubular body 200 is to be formed is not smooth, the inner surface or the inner surface may be formed along the inner surface. The wheels 65 may get stuck on unevenness or steps that occur on the surface of the tubular body 200. If the running of the pipe making machine 100 is not stable, the strip 1 and the joiner 2 may not be properly fitted together by the rollers 31a and 31b, which may make it difficult to ensure the quality of the rolled tubular body 200. there were.

Japanese Patent Application Publication No. 2013-199097

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a pipe making machine that can run stably without slipping inside a pipe conduit for positioning a forming mechanism. do.

A characteristic configuration of the pipe making machine according to the present invention for achieving the above-mentioned object is that it is provided with a main body part, and a belt-like pipe rehabilitation member is wound spirally around the main body part inside the pipe conduit. a forming mechanism for forming a rehabilitated pipe by rolling the main body part, and a traveling mechanism for running the main body part on the inner surface of the pipe conduit or on the surface of the rehabilitated pipe formed by rolling up the pipe rehabilitation member. In the pipe manufacturing machine, the traveling mechanism has a pair of left and right crawler units , and has an attachment position adjustment mechanism configured to be able to change the attachment positions of the pair of left and right crawler units with respect to the main body. At the point.

According to the above-mentioned configuration, the crawler unit has a wider ground contact area than the wheels of conventional pipe making machines, and is particularly effective on the inner surface of the pipe culvert and the surface of the rehabilitated pipe formed along the inner surface. Even if uneven surfaces or steps occur, the pipe making machine is less likely to slip, allowing the pipe making machine to run stably inside the pipe culvert. Therefore, it is possible to accurately align the forming mechanism, and it is possible to ensure the quality of the formed rehabilitated pipe.

When the internal dimensions of the pipe in which the rehabilitated pipe is formed are larger than the dimensions of the pipe rehabilitation member, especially when the cross-sectional shape is rectangular, it is necessary to prevent the rolled-up pipe rehabilitation member from sagging on the ceiling side of the pipe. Therefore, hard materials are sometimes used for pipe rehabilitation members. Therefore, the forming mechanism needs to be configured to generate a winding force strong enough to appropriately wind such a hard pipe rehabilitation member onto the inner surface of the pipe conduit. In this case, the pipe making machine is required to have a structure capable of supporting a structure capable of generating such a strong winding force as a scaffold for the forming mechanism.

Further, during the winding operation of the pipe rehabilitation member, a force acting in the opposite direction to the winding direction of the pipe rehabilitation member is applied to the pipe making machine. In order to support this force, the pipe making machine is equipped with a support member that extends against the wall surface of the pipe conduit or rehabilitated pipe. Therefore, it is difficult for workers to shift and adjust the position of the pipe-making machine manually, as the workers' feet are submerged in dirty water and can be slippery, and the construction time tends to be longer. .

By providing the crawler unit in the traveling mechanism as described above, the crawler unit can secure a wider ground contact area than conventional wheels, and therefore can sufficiently support the winding operation by the forming mechanism. Moreover, the pipe making machine can be run stably. Since the crawler unit makes it easy to maintain the posture of the pipe making machine and run it stably, alignment of the forming mechanism becomes easy and construction time is shortened.

The internal dimensions and shape of the pipe conduits to be used to form rehabilitated pipes by the pipe making machine are not necessarily uniform. If the mounting position of the pair of crawler units on the main body is fixed, that is, the tread width is constant, even if the pipe making machine can be used effectively in one pipe culvert, it cannot be used effectively in another pipe culvert. There is a possibility. According to the above configuration, the mounting position adjustment mechanism allows the mounting positions of the pair of crawler units relative to the main body to be changed in accordance with different inner dimensions and shapes of the pipes. In other words, since the tread width can be changed, it can be used in many pipe conduits.

In the present invention, the crawler unit has at least a driving wheel, a driven wheel, and a crawler belt configured in an endless shape so as to surround these, and the distance between the centers of the driving wheel and the driven wheel is: Preferably, the length is such that it can step on two or more seams of the rehabilitated pipe wound spirally at a predetermined pitch.

A crawler belt makes contact with the ground between the centers of the driving wheel and the driven wheel, but because the pipe rehabilitation member is wound up in a spiral, the distance between the centers of the driving wheel and the driven wheel (crawler contact length) is short. Then, a situation may arise in which only one crawler belt of the pair of left and right crawler units steps on the joint of the rehabilitated pipe, while the other crawler belt does not step on the joint. In this case, the pair of left and right crawler units tend to have different frictional forces with the ground surface, which is not preferable from the viewpoint of running stability of the pipe making machine.

According to the above-mentioned configuration, the part of the crawler belt that touches the ground steps on two or more seams of the spirally wound rehabilitation pipe, so that the vehicle can run stably. In addition, it is preferable that the center pipe distance between the driving wheel and the driven wheel is configured such that three or more joints of the rehabilitated pipe can be stepped on. Since the pipe rehabilitation member is made of synthetic resin such as hard vinyl chloride, it is preferable that the material of the crawler shoe constituting the crawler belt is a material that is less slippery, such as an elastomer. In addition, it is preferable that the drive wheel is arranged and configured on the rear side in the traveling direction of the pipe making machine. This is because workability such as maintenance of the mechanism for driving the drive wheels can be easily ensured.

The pipe making machine is configured so that each component, for example, each crawler unit of the traveling mechanism, is carried into the pipe culvert through a manhole and assembled inside the pipe. The upper limit of the size is preferably such that it can pass through a manhole.

In the present invention, it is preferable that the crawler unit includes an air motor that drives the drive wheels.

The inside of a culvert is a closed space with a humid environment that is not suitable for the use of electric motors, gasoline engines, etc., but air motors can be used even in such places. Note that the air motor is driven by compressed air supplied from outside the pipe.

In the present invention, it is preferable that the air motors of the pair of left and right crawler units have a control mechanism that can individually control the air motors to freely rotate in forward and reverse directions.

According to the above-described configuration, the pipe making machine is capable of turning (gentle turning, pivot turning, and super pivot turning).
This is particularly advantageous for adjusting the direction of movement in a narrow space such as a pipe conduit. The pipe making machine does not need to be equipped with a complicated mechanism such as a steering device that changes the steering angle of the wheels.

In the present invention, the traveling mechanism further includes a pair of left and right wheels, and in the main body, the wheels are provided at the front in the traveling direction of the pipe making machine, and the crawler unit is provided on the front part of the pipe making machine. It is preferable that the forming mechanism is provided at the rear in the direction of travel, and the forming mechanism is provided at the front of the pipe making machine in the direction of travel.

In the main body, it is necessary to secure a space for arranging a forming mechanism and a work space for a worker at the front in the direction of movement of the pipe making machine. If the crawler unit is provided in the front part of the main body in the direction of movement of the pipe making machine, it is difficult to secure the above-mentioned arrangement space and work space. On the other hand, if a pair of left and right wheels are provided at the front of the main body in the direction of movement of the pipe making machine, the above-mentioned arrangement space and work space can be secured more widely than when a crawler unit is provided here. be able to.

If the pipe making machine were configured to run only with the crawler unit, the crawler unit would need a certain length depending on the length of the main body, but since the running mechanism is configured to have wheels, The crawler unit does not require a certain length, and as a result, the crawler unit can be of a size and weight that can be carried in by hand, making it easier to carry in and out through manholes, and to assemble inside pipes. Easy to work and disassemble.

It is a side view of a pipe making machine. It is a front view of a pipe making machine. It is an explanatory view of an attachment position adjustment mechanism.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a pipe making machine 1 according to the present invention uses a joiner 4 to wind strips 3 helically wound at a predetermined pitch on the inner surface of a pipe conduit 2 having a rectangular cross-sectional shape. This is for forming a rehabilitated pipe 5 on the inner surface of the pipe culvert 2 by indirectly connecting them.

The members constituting the rehabilitation pipe 5, that is, the strip 3 and the joiner 4, which are pipe rehabilitation members, are made of a material having sufficient strength to cope with the internal environment of the pipe culvert 2, for example, a synthetic resin such as hard vinyl chloride. It is a strip-shaped member.

The strip 3 and the joiner 4 are each stored in a circularly wound state on the ground around the manhole. The strip 3 and the joiner 4 are drawn into the pipe culvert 2 through the manhole, and wound spirally around the inner surface of the pipe pipe 2 by the pipe making machine 1. In this embodiment, the strip 3 and the joiner 4 are supplied from the front of the pipe making machine 1 in the direction of movement.

As shown in FIG. 1, the pipe making machine 1 includes a main body 6 thereof, a pipe rehabilitation member forming mechanism 7, and a traveling mechanism 8 for causing the main body 6 to travel on the surface of the rehabilitated pipe 5. ing.

The forming mechanism 7 includes a feeding unit 11 and a fitting unit 12 provided on a shaft 10 rotatably arranged by the power of a drive unit 9 provided in the main body 6 .

The feed unit 11 is configured to feed the strip 3 against the wall surface of the pipe culvert 2 by a feed roller 13 driven by the power of the drive unit 9.

The fitting unit 12 is rolled up on the wall surface of the pipe conduit 2 by a fitting roller 14 provided at the tip of an arm body that has a built-in double-acting air cylinder mechanism that can be expanded and contracted by the power of the drive unit 9. The joiner 4 is inserted so that the fitting protrusions provided on both longitudinal sides of the joiner 4 are press-fitted into the fitting recesses provided on both longitudinal sides of the adjacent strips 3. It is configured to press.

The traveling mechanism 8 is provided with a pair of left and right wheels 15 at the front in the direction of movement of the pipe making machine 1, and a pair of left and right crawler units 16 at the rear in the direction of movement of the pipe making machine 1. The wheels 15 are driven wheels without a drive mechanism, and are used to stabilize the posture of the pipe making machine 1 when the forming mechanism 7 forms the rehabilitated pipe 5, and to control the running of the pipe making machine 1 when the crawler unit 16 runs. provided for stabilization. Furthermore, a training wheel 17 is provided above and on the side surface of the main body 6 to extend toward the rehabilitated pipe 5 formed on the inner surface of the pipe conduit 2 . When the auxiliary wheels 17 come into contact with the surface of the rehabilitated pipe 5, the posture and running stability of the pipe making machine 1 is assisted.

Each crawler unit 16 is connected to a driving wheel 18, a rolling wheel 19, a driven wheel 20, a crawler belt 21 configured in an endless shape so as to surround these, and an air compressor installed on the ground to the outside of the pipe culvert 2 via a tube. The air motor 22 is driven by compressed air supplied from the air motor 22 in a forward and reverse rotational manner, and a transmission mechanism 23 that changes the speed of the output of the air motor 22 and transmits it to the drive wheels 18.

The crawler belt 21 has an endless structure in which crawler shoes are repeatedly connected by links, each of which has a structure in which a metal reinforcing material is embedded inside an elastomer. As the elastomer, for example, vulcanized natural rubber or styrene-butadiene rubber is used. The distance between the centers of the driving wheel 18 and the driven wheel 20 (crawler ground contact length) is set to a length that allows stepping on two or more, preferably three, joints of the spirally wound rehabilitation pipe 5 at all times. has been done. The joint of the rehabilitated pipe 5 in this embodiment is the joiner 4 that connects the strips 3 together.

In this embodiment, the effective width of the strip 3 is 123 mm and the effective width of the joiner 4 is 42 mm, so the effective width of one turn of the rehabilitation pipe 5 is 165 mm (=123 mm + 42 mm), that is, the joint is Since the rehabilitated pipes 5 are spirally wound, they are present at intervals of about 165 mm. In this case, if the crawler contact length is set to 630 mm, the crawler contact length will be approximately 3.8 turns of the rehabilitated pipe 5, so the crawler unit 16 will always step on three or four joints of the rehabilitated pipe 5. I can do it.

The main body 6 is provided with a control mechanism (not shown) for controlling the drive of the air motor 22 and a mounting position adjustment mechanism 24 .

By controlling the drive of each air motor 22 of the pair of left and right crawler units 16 by the control mechanism, the pipe making machine 1 can freely move forward, backward, and turn (slow turn, turn turn, super turn turn, etc.) It is composed of

As shown in FIG. 3, the mounting position adjustment mechanism 24 has a plurality of bolt holes 26 provided in the frame 25 constituting the main body 6, bolt holes 28 provided in the frame 27 of the crawler unit 16, and It is composed of a bolt 29 and a nut 30 that are connected.

By changing the mounting position of the crawler unit 16 with respect to the main body 6 using the mounting position adjustment mechanism 24, the interval between the pair of left and right crawler units 16 can be arbitrarily changed. In a pipe culvert 2 having a rectangular cross-sectional shape, the pair of left and right crawler units 16 can be placed on a flat part of the bottom surface of the pipe pipe 2 immediately adjacent to the corner that connects to the side surface. 24 has a tread width of 760 mm (when the pair of left and right crawler units 16 are each located at a position of 380 mm from the center of the main body part 6) to 1600 mm (when the pair of left and right crawler units 16 are each located at a position of 800 mm from the center of the main body part 6). If the pipe making machine 1 is configured to be changeable within the range up to can run stably.

Note that the mounting position adjustment mechanism 24 is not limited to such a configuration. For example, the bolt holes 26 provided in the frame 25 and the bolt holes 28 provided in the frame 27 are configured as elongated holes so that the position of the crawler unit 16 with respect to the main body 6 can be adjusted. Good too.

By rotating the shaft 10 of the forming mechanism 7 while moving the pipe making machine 1 along the pipe axis direction of the pipe culvert 2 using the traveling mechanism 8, the feeding unit 11 and the fitting unit 12 are moved inside the pipe culvert 2. move in a spiral. A rehabilitated pipe 5 is formed in the pipe culvert 2 by connecting the strips 3 wound up on the wall surface of the pipe culvert 2 by the feeding unit 11 via the joiner 4 by the fitting unit 12.

Incidentally, in order to properly press the joiner 4 against the strip 3, the fitting roller 14 must be in an appropriate position.

To align the fitting rollers 14, the control mechanism appropriately controls the pair of left and right crawler units 16 to move the pipe making machine 1 forward, backward, and turn. Positioning can be facilitated.

In the embodiment described above, the traveling mechanism 8 of the pipe making machine 1 includes wheels 15 at the front part of the main body 6 in the traveling direction of the pipe making machine 1, and the traveling mechanism 8 of the pipe making machine 1 includes The traveling mechanism 8 of the pipe making machine 1 includes the crawler unit 16 at the front of the main body 6 in the direction of movement of the pipe making machine 1. The pipe making machine 1 may be configured to include wheels 15 at the rear in the traveling direction, or may not include the wheels 15 and may include only a pair of left and right crawler units 16.

In the above embodiment, the case where the pipe culvert 2 has a rectangular cross-sectional shape is explained as an example, but the cross-sectional shape of the pipe pipe 2 is not limited to a rectangular shape, but may be circular, or may be non-circular, for example, horseshoe-shaped. There may be.

In the embodiment described above, a case has been described in which the rehabilitated pipe 5 is formed by indirectly connecting the strips 3 with each other using the joiner 4. However, the rehabilitated pipe 5 is formed by directly connecting the strips 3 with each other. It may be a configuration formed by. In this case, the fitting portions provided on both sides of the strip 3 in the longitudinal direction are fitted together by press fitting. In this case, the joint of the rehabilitated pipe 5 is the joint between the strips 3.

The embodiments described above are all examples of the present invention, and the present invention is not limited by the description, and the specific configuration of each part can be changed and designed as appropriate within the range where the effects of the present invention are achieved. be.

1: Pipe making machine 2: Pipe culvert 3: Strip (pipe rehabilitation member)
4: Joiner (pipe rehabilitation member)
5: Rehabilitation pipe 6: Main body 7: Forming mechanism 8: Traveling mechanism 9: Drive unit 10: Shaft 11: Feeding unit (forming mechanism)
12: Fitting unit (forming mechanism)
13: Feed roller (forming mechanism)
14: Fitting roller (forming mechanism)
15: Wheel 16: Crawler unit 18: Drive wheel 19: Rolling wheel 20: Driven wheel 21: Crawler belt 22: Air motor 23: Transmission mechanism 24: Control mechanism 25: Mounting position adjustment mechanism

Claims (5)

The main body is provided with a forming mechanism for forming a rehabilitated pipe by spirally winding a strip-shaped pipe rehabilitation member on the inner surface of the pipe culvert, and a forming mechanism for forming a rehabilitated pipe by winding a band-like pipe rehabilitation member spirally around the inner surface of the pipe culvert; A pipe making machine that is provided with a traveling mechanism that runs on the surface of a rehabilitated pipe formed by winding the pipe rehabilitation member,
The traveling mechanism has a pair of left and right crawler units ,
A pipe making machine characterized by having an attachment position adjustment mechanism configured to be able to change the attachment positions of the pair of left and right crawler units with respect to the main body. The crawler unit includes at least a driving wheel, a driven wheel, and an endless crawler belt that surrounds these, and the distance between the centers of the driving wheel and the driven wheel is set in a spiral manner at a predetermined pitch. The pipe making machine according to claim 1 , wherein the length is such that it can step on two or more joints of the rehabilitated pipe rolled up into a shape. The pipe making machine according to claim 2 , wherein the crawler unit includes an air motor that drives the drive wheel. 4. The pipe making machine according to claim 3 , further comprising a control mechanism capable of individually controlling the air motors of the left and right crawler units so as to freely rotate in forward and reverse directions. The traveling mechanism further includes a pair of left and right wheels,
In the main body, the wheels are provided at the front in the direction of movement of the pipe making machine, and the crawler unit is provided at the rear in the direction of movement of the pipe making machine,
The pipe making machine according to any one of claims 1 to 4 , wherein the forming mechanism is provided forward in the direction of movement of the pipe making machine.

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