JPS606822A - Device for measuring inclination of pipeline such as sewer pipe or the like - Google Patents

Abstract

PURPOSE:To capture pitching oscillation with simple constitution by providing a torque balance type inclination angle sensor in a toric supporting frame for relieving rolling disposed in the front part of a skid and mounting an inclinometer controller in the rear part of the skid. CONSTITUTION:A device 11 for measuring inclination of a pipeline provided with an inclination sensor 7 and a television camera which are connected into duplex are guided into a pipeline. The device 11 and the television camera are moved to travel in the pipeline by taking up one wire rope 2. If there is an inclination in the pipeline in this state, the skid 1 of the device 11 inclines and the light shielding and pendulum element of the sensor 7 incline accordingly with respect to the centroid. An output is taken out when the moment thereof and the rotating torque balance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for measuring the slope of a sewer pipe or the like, which is capable of directly measuring the slope of a sewer pipe inside the pipe.

In general, inspection and maintenance of pipes installed underground, such as sewage pipes, is difficult. For example, it is difficult to inspect and maintain the pipes by inserting a steel cable into the pipe and using a prick sensation to detect defects. Met.

In addition, in recent years, with the development of industrial television cameras, the television camera is attached to a skid that is pulled by YA7-, and the captured image is projected on a monitor placed on the ground and transmitted within the jurisdiction. It has become possible to detect the state of

However, even in this TV camera-based investigation within the jurisdiction,
The detection information is simply that there is a puddle of water or that there is a gap in the pipe connection (), but it cannot detect how much the pipe itself has sunk. That is, with conventional pipe inspection methods, it has not been possible to measure the strain in sewer pipes caused by uneven settlement, and this has led to the advent of pipe slope measuring devices.

In view of the above-mentioned circumstances, the present invention provides a pipe inclination measuring device that captures the pitching fluctuation of a pipe.

That is, in the present invention, a sensor housing with a heavy spigot is arranged so as to be swingable only in the lateral direction within an annular support frame for rolling relief fixed to a skid pulled by a wire A7- at the front and rear, and the sensor housing is Torque-balanced tilt angle 1 that detects pitching on the body
This system is equipped with a sensor and a slope control device behind the skid, so that the sinking slope of the pipeline can be directly detected and covered by the movement of the skid.

Hereinafter, the present invention will be explained based on drawings of embodiments.

Reference numeral 1 denotes a skid having a width corresponding to the diameter of the pipe whose front and rear ends are pulled by wires 2, and annular supporting frames 3, 3 for rolling escape are arranged orthogonally in the longitudinal direction at the front and rear of the front position of the skid 1. The inner circumferential surface 3 of the supporting frames 3, 3
a, A plurality of rollers 6 (three on one side in the figure) protruding from the front and rear ends of the sensor housing 5 having a weight 4 are fitted onto the sensor housing 5, and the sensor housing 5 is horizontally moved. Only the direction can be swung freely. 7 is a torque-balanced tilt angle sensor placed on the sensor housing 5;
is installed so that a light-shielding pendulum element 9 disposed inside and attached to the axis of the movable coil portion 8 swings in the longitudinal direction of the skid (in the traveling direction). Reference numeral 10 denotes an inclinometer controller which serves as an amplifier mechanism mounted on the rear of the skid 1. The inclination angle sensor (J--7) is connected to the inclination 4 controller 10, and the entire pipe inclination measurement device 11 is constructed.

12 is a water t! provided on the mounting base portion 13 of the opposing support frames 3, 3. This is an adjustment screw, and the screw 12 is attached to the left and right skid portions 1a.
, 1a and the middle beam column 16 are screwed into three points. The roller 6 facing the support frame 3 is regulated by the positioning step 3b and is prevented from moving in the longitudinal direction.

To explain this function, first, this pipe inclination measuring device 11 is equipped with a skid knife and is used in combination with a television camera 14 for photographing pipes, which is known in the art. That is, a television camera 17'I is installed behind the pipe inclination measuring device 11.
A television camera 1 is attached to a winch 1G which connects the cables with cables 15 and places the traction wire 2 tied to the tip of the pipe inclination measuring device 11 on the E side of the man ball 17 at -h.
The wire 2 tied at the four ends is attached to the winch 16' placed above the other manhole 17' (=1 (see Figure 8). is connected to the level indicator 20 via the cable drum 19, and the TV cable 2 is led from the TV camera 14.
1 to the controller 22 via the cable drum 19'.
, connect to the monitor 23. 24 is the metric counter, 25 is the power supply! 1′.

Here, first of all, the inside of the conduit A to be investigated is investigated and grasped in advance by inserting only the television camera 14. Next, the pipe inclination measuring device 11 and the television camera 14 are linked together and carried into the pipe A to conduct the main investigation. In this case, the method for measuring the pipe line A is, for example, at intervals of 1 to 2 m when polyethylene pipes are used, and at the center of the joints when using hume pipes.

Next, the pipe inclination measurement device 11 equipped with the inclination sensor 7 and the television camera 14 are guided to the pipe A in parallel, and while winding one of the wires 2, the pipe inclination measurement device @ 11 and the television camera 14 are connected. Run 14. In this state, if there is an inclination in the pipe A, the skid 1 of the pipe inclination measuring device 11 will incline, and accordingly, the light shielding and pendulum element 9 of the inclination angle sensor 7, which is integrated with the skid 1, will move toward the center of gravity. The output is obtained when the tilt, this moment, and the rotational torque are balanced. That is, this tilt angle sensor 7 has a DC bridge connection consisting of resistors 26, 27 and light receiving elements 28, 29 as shown in FIG. A resistor 30 is connected to the movable coil 8, and a light shielding/pendulum element 9 is not disposed at the finger button position of the movable coil 8. In this case, the light-shielding parallel pendulum element 9 is the light-emitting element 3
1.32 and the light receiving elements 28, 29, and in the normal position (horizontal), the light receiving elements 28, 29 each receive the amount of light corresponding to the amount of snow, and the bridge is balanced. In this state,
When the light-shielding pendulum element 9 is tilted, the resistance of the light-receiving elements 28 and 29 is increased, the bridge becomes unbalanced, and a current flows through the movable coil 8. This current generates a torque in the opposite direction to the moment due to the light shielding weight in the movable coil 8, and both of them stop at a position one node apart from equilibrium, and the current at this time becomes the output current.

In this case, the output current is D'c4~20IA, which is very weak, so the inclinometer controller 70, which is the amplifier configuration at the rear, makes a total of 8I.
It converts it into a IIIO electrical signal, takes out the current output, and sends it to the level indicator 20.

In this level display 2o, (+) is displayed (-)
As a display, the slope display value n is digitally displayed (
(See Figure 9). Level indicator 2 while checking the distance of the measurement point
After reading the number represented by 0 and measuring everything, calculate the average slope between the manholes.

Of course, during this measurement, moving astigmatism is performed while displaying on the monitor 23 an image captured by the television camera 14 which is towed behind the pipe inclination measurement device @1. This television camera 14 has a rotatable head section 14a, which can be rotated as appropriate by remote control operation, allowing for direct viewing as well as 360° side viewing, as well as direct/side switching, focus, and iris control. Digital technology has integrated multiple
transmitted. In addition, the images inside the tube are optimally displayed on the monitor using a special ultra-high sensitivity forward image tube and an IC-based electronic circuit.

In addition, in the transition in the pipe △, the pipe slope measuring device @11
The skid 1 has a rectangular cross-section and is in point contact with the wall surface, so even if soil etc. has accumulated in the pipe △, it can be easily moved straight while removing it, and the skid 1 itself is slightly Even when facing in the lateral direction, the inclination angle sensor 7 with a #14
Because it is structured so that it automatically swings when it slides and returns to the horizontal (lateral) position, it does not interfere with measurements in the vertical direction (pitching). be.

As mentioned above, the slope measuring device for sewer pipes, etc. of the present invention has the following features:
A torque-balanced inclination angle sensor and an inclinometer controller that transmits the signal of the inclination angle sensor to a sensor housing with a weight that does not pick up lateral vibrations on the skid. As a result, the inclination caused by the subsidence of the pipe can be detected as the pitching inclination angle.Moreover, this inclination angle sensor uses a torque balance type, and is a combination of a meter mechanism attached to a moving coil and a photocoupler. Therefore, even at a small inclination, a reliable output of 1 q can be obtained.Furthermore, since the structure of the present invention is simplified, it can be constructed compactly and is suitable for measuring the inclination of small diameter pipes.

Furthermore, since the present invention has a skid-facing configuration similar to that of a known skid camera for photographing pipes,
It can be used in combination with a television camera, and has many effects such as being able to take measurements while monitoring the monitor.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a slope view;
Figure 2 is a partially cutaway plan view, Figure 3 is a front view, Figure 4 is a front view of the stolen vehicle, Figure 5 is a wiring diagram of the tilt angle sensor, and Figure 6 is a connection diagram with a television camera. A side view, FIG. 7 is a schematic diagram of the measuring device, FIG. 8 is an explanatory diagram of the measurement state, and FIG. 9 is an explanatory diagram of the measurement points. 1... Skid, 3... Rolling relief annular support frame, 4... Weight, 5... Sensor housing, 6... Roller, 7...] Luk balance type tilt angle level Shiza,
8... Moving coil part, 9... Light shielding" 1 mi pendulum element,
10... Inclinometer controller. Patent Applicant Kansei Kogyo Co., Ltd. Agent Yuki Omata Rikai Shigemi Makido Yunosuke Araki

Claims (1)

[Claims] 1. A sensor housing with a weight is fitted into an annular support frame for rolling relief arranged at the front of the skid corresponding to the pipe diameter, with a roller interposed therebetween, so that it can swing freely only in the lateral direction,
A torque-balanced tilt angle sensor is installed inside this sensor housing, a light-shielding pendulum element attached to the moving coil part of the tilt angle sensor is installed facing in the longitudinal direction, and a tilt inclinometer controller is mounted at the rear of the skid. Pipe slope measurement 511i@ for sewage pipes, etc.