JPH0742122Y2 - Mounting pipe mouth probe - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a probe for mounting pipes and mouths.

[0002]

2. Description of the Related Art Recently, as an inner surface lining method for existing water pipes and gas pipes, a method of expanding a plastic tube inside the pipe and lining it on the inner surface of the pipe is becoming popular. In such a plastic tube lining construction method, if a mounting pipe is attached to the main pipe, the pipe mouth of the mounting pipe is blocked by the tube, so the pipe pipe mouth is opened after the lining of the plastic tube is completed. Create a need.

The blocking membrane at the mouth of the mounting pipe can be perforated and opened by applying various known perforating machines for pipes. However, since the pipe mouth of the mounting pipe is covered with the blocking film, the pipe mouth is opened at the time of perforation work. Often overlooked or difficult to align with the tube mouth. In this case, before the lining is installed, the mouth of the mounting pipe is not yet covered with the blocking film, so for example, the above-mentioned pipe mouth is based on the image sent from the TV camera car installed in the trunk pipe to the ground. It can be found without oversight, but in the above image there is no sense of distance in the axial direction of the main canal, so it is necessary to accurately and accurately align the perforator with the mouth of the occlusion membrane during perforation work. It is not possible to obtain various data in advance.

The present invention has been made for the purpose of providing a probe for a mounting pipe mouth, which can obtain various data required for accurate alignment by the central probe of the pipe mouth.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a carriage that is movable in the axial direction of a pipe under remote control in a trunk pipe with a mounting pipe, and the carriage 1 is mounted on the carriage 1 in the circumferential direction and radius of the trunk pipe. Direction-movable conical or frustoconical positioning fitting, a first driving device for moving the fitting in a stem circumferential direction, a second driving device for moving the fitting in a radial direction, and the metal article The present invention relates to a mounting pipe mouth opening probe, which is provided with an angle meter for displaying a movement angle in a pipe circumferential direction.

[0006]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the explorer of the present invention comprises a carriage 1 which is movable in the main pipe a in the axial direction of the pipe under remote control. For the movement of the carriage 1 in the pipe, a pulling movement means using a rope or a movement means by self-propelling can be applied.

A rotary shaft 2 located on the central axis of the main pipe a and a swing motor 3 for swinging the shaft 2 are installed on the carriage 1.

An air cylinder / plunger device 4 is installed and fixed at an intermediate portion in the longitudinal direction of the shaft 2 in a direction orthogonal to the central axis of the shaft 2, and a positioning metal piece 5 is fixed to the tip of a plunger 4a of the device 4. It is set up.

The positioning metal member 5 is of a conical or frusto-conical shape (a frusto-conical shape is shown in the embodiment) and has a dimension such that the diameter of the base portion thereof slightly exceeds the diameter of the mounting tube b. . The hardware 5 is moved in the circumferential direction of the stem tube by the induced rotation of the shaft 2 caused by the operation of the motor 3 (first driving device), and is also actuated by the device 4 (second driving device) to radially move the stem tube. Be moved to. Further, when the plunger 4a is in the retreat position, the above-mentioned hardware 5 is accommodated in the trunk pipe a as shown by the phantom line in FIG. 1 and can move freely inside the trunk pipe a, and as shown by the solid line in FIG. proximal end of the fitting 5 can enter the position to the tube outlet in b lodge the tube port b ₁ by advancement of the plunger 4a to.

The rotating shaft 2 is cantilevered on the base end side by a bearing member 6 fixed to the carriage 1. Under this cantilevered support state, the base end of the rotary shaft 2 is connected via a torque limiter portion 7 to the motor. 3 is connected to the rotating shaft 3a.

The torque limiter section 7 may have any structure as long as it can absorb excessive torque, and various known structures can be adopted. In the figure, a pair of friction plates 7 frictionally engaged by receiving the pressing force of the spring 7a between the rotating shafts 2 and 3a.
b and 7c are provided so that excessive torque can be absorbed by the slip of the friction engagement portion. By the way, in the above configuration, the one friction plate 7b is integrally fixed to the shaft end of the rotary shaft 3a of the motor 3, and the other friction plate 7c is fixed.
Is integrally fitted in the base end of the rotary shaft 2 in the rotational direction and freely fitted in the axial direction, and a compression spring 7a is interposed between the friction plate 7c and a spring receiving member 7d fixed on the shaft 2. The spring 7
The friction plate 7c is pressed against and frictionally engaged with the friction plate 7b by the spring force of a.

The torque limiter portion 7 is housed in a casing 8 fixed to the carriage 1, and this casing 8 is provided.
The bearing member 6 is supported and fixed to the front end of the.

At the tip of the rotary shaft 2, a disk 9 having a scale for indicating an angle on the front surface is fixed at the center of the rear surface so as to rotate integrally with the shaft 2. A measuring needle 10 is provided at the center of the front surface of the disk 9 so as to always point vertically downward by its own weight independently of the rotation of the disk 9. The disc 9 and the needle 10 constitute an angle meter for measuring the movement angle of the metal fitting 5 in the circumferential direction of the stem tube.

On the upper part of the front surface of the disk 9, there is provided a light reflecting portion such as a prism member 11 for measuring a distance by applying a light wave range finder C (see FIG. 7).

When the probe of the present invention is used to search the center of the mouth b ₁ of the mounting pipe b, as shown in FIG. 4, it is first found by the television camera car d installed in the main pipe a. The positioning fitting 5 of the device of the present invention is aligned with the tube opening b ₁ of the mounting tube b based on the image sent from the camera car d to the ground. The position adjustment of the metal fitting 5 in the stem tube axial direction necessary for this alignment is performed by moving the carriage 1 in the stem tube axial direction, and the trunk pipe circumferential direction adjustment is performed by the carriage 1 In the stopped state, the metal fitting 5 is moved in the circumferential direction of the stem tube by operating the swing motor 3 and swinging and rotating the rotary shaft 2. By the way, since there is almost no sense of distance in the axial direction of the stem tube in the above image, alignment in this direction is a registration and the error is large, but there is a sense of distance in the circumferential direction of the stem tube, so this direction The alignment of can be performed almost accurately with little error.

What is important in the above-mentioned positioning operation is that the tapered head 5a at the upper end of the positioning member 5 is positioned within the opening area of the pipe mouth b ₁ as schematically shown in FIG. ,
If satisfied even this requirement, the center o 'of the bracket 5 as shown in FIG. 5 is no particular problem even if significant deviations from the center o of the tube port b ₁ in the tube axis direction of Mikikan a. The deviation between the centers o and o'in the circumferential direction of the trunk pipe a can be performed with a certain degree of accuracy in this direction, as described above, and therefore is far greater than the deviation in the pipe axis direction. small. The rough alignment as shown in FIG. 5 can be performed without any trouble based on the image from the television camera car d.

After the rough alignment as shown in FIG. 5, the air cylinder / plunger device 4 is actuated to move the positioning fitting 5 at the tip of the plunger 4a forward in the radial direction of the trunk pipe. in, as the inclined surface 5b of the side of the bracket 5 is shown in FIG. 6, on the side where the center is shifted abuts the rim b ₂ of the tube port b _1. Note that this abutment may be used for rough alignment.

When the operating pressure of the device 4 is increased in the state shown in FIG. 6, the metal fitting 5 works by the inclined surface 5b on its side,
In the pipe axis direction and the circumferential direction of the main pipe a, the carriage 1 is provided in the pipe axis direction.
Along with the swinging rotation of the plunger 4a and by extension the rotary shaft 2 and the sliding rotation of the torque limiter portion 7 in the circumferential direction, it moves deeper into the pipe mouth b ₁ while being guided, proximal portion 5b ₁ of the bracket 5 when abuts the entire circumference of the rim b ₂ of the tube port b ₁ at ingress, automatically in the center of bracket 5 as shown in FIG. 3, the center of the tube opening b ₁ Matches exactly.

In FIG. 3, for convenience, a pipe port b ₁ of the mounting pipe b is shown.
It is shown that the center of is located at the center of the top of the stem a, and the deviation angle in the circumferential direction of the stem a is zero. Therefore, the amount of rotation of the disk 9 with an angle scale fixedly mounted on the tip of the rotary shaft 2 is zero, and the needle 10 that always keeps the hanging state indicates the zero position of the scale. When the center of the tube mouth b ₁ is located in the circumferential direction deviated from the center of the top of the stem a, the positioning member 5 is moved in the circumferential direction of the stem by this deviation angle as described above. Therefore, with this movement, the rotary shaft 2 and thus the shaft 2
The disk 9 integrated with the above is rotated via the plunger 4a. Therefore, by reading the amount of rotation of the disk 9 at this time based on the measuring needle 10, the deviation angle in the circumferential direction of the center of the tube opening b ₁ can be found.

The distance between the working port a ₁ of the main pipe a and the center of the main pipe b _{1 in} the axial direction of the main pipe is, for example, a measure such as a tow rope (not shown) used for moving the carriage 1 in the main pipe. It is possible to measure as much as possible by using a prism 11 provided on the disk 9 of the carriage 1 as shown in FIG. Can be reduced to

If only two values of the angle of deviation of the center of the pipe mouth and the distance in the direction of the pipe axis are known, the center of the pipe mouth can be easily reconfirmed based on these numerical values.

In the present invention, the rotary shaft 2 and the motor rotary shaft 3a can be connected to each other via the torque limiter portion 7. By the way, in the state shown in FIG. 6, the positioning fitting 5 is operated by the air cylinder / plunger device 4 and the pipe opening b ₁
When the metal shaft 5 is moved deeper into the inside, the rotary shaft 2 is oscillated and rotated via the plunger 4a as the metal fitting 5 moves in the circumferential direction of the trunk pipe. For example, when the alignment operation in the circumferential direction of the main pipe is performed almost accurately during the alignment operation based on the image of the television camera car d, the movement amount of the metal fitting 5 in the circumferential direction of the main pipe is very small, Therefore, the swinging rotation angle of the rotary shaft 2 is also extremely small, so that a swinging rotation angle of this level can be absorbed within the range of idle rotation that the rotary shaft 3a of the motor 3 normally has. However, if the circumferential alignment of the main pipe is fairly rough, it goes without saying that the metal fitting 5
However, since the amount of movement in the circumferential direction of the main pipe is large and the swinging rotation angle of the rotary shaft 2 is also large, this cannot be accommodated in the range of idle rotation of the rotary shaft 3a of the motor 3. In such a case, if the torque limiter part 7 is provided between the rotary shaft 2 and the motor rotary shaft 3a, the limiter part 7 will rotate in a slipping manner, which can be easily dealt with.

[0024]

[Effect] According to the explorer of the present invention, the center of the mounting pipe attached to the main pipe is searched for the accurate deviation angle in the circumferential direction of the main pipe and the distance in the axial direction of the main pipe. It is possible to measure, and it is possible to provide various data necessary for aligning the perforating wheel with the above-mentioned pipe mouth when the perforation work of the attachment pipe mouth closing membrane is performed.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is an overall view showing a situation at the start of exploration according to the present invention.

FIG. 5 is a plan view showing a rough alignment condition at the start of exploration.

FIG. 6 is a side view of the same.

FIG. 7 is an overall view showing a situation of distance measurement in a tube axis direction by applying a light wave range finder.

[Explanation of symbols]

 1 dolly 2 rotating shaft 3 rocking motor (first drive device) 4 air cylinder / plunger device (second drive device) 5 positioning metal fitting 6 bearing part 7 torque limiter part 8 casing 9 disk 10 needle meter 11 prism member

Claims (2)

[Scope of utility model registration request] 1. A trolley which is movable in a pipe axis direction under remote control in a trunk pipe with a mounting pipe, and on the trolley 1 is a conical shape or a slit which is movable in a circumferential direction and a radial direction of the trunk pipe. A head cone type positioning metal fitting, a first driving device for moving the metal fitting in the circumferential direction of the main pipe, a second driving device for moving the same in the radial direction of the main pipe, and a moving angle of the metal product in the circumferential direction of the pipe. A probe for mounting pipes and mouths, characterized in that a goniometer for displaying is installed. 2. The probe according to claim 1, wherein the trolley 1 is provided with a light reflecting portion for measuring a distance under the application of a light wave range finder.