JP2008151561A - Measurement apparatus and measurement method for flow condition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measurement apparatus and a measurement method for flow condition to improve the operability for towing a mobile measurement instrument on the water, the safety, the certainty and the measurement accuracy. <P>SOLUTION: The measurement apparatus 2 for flow condition comprises: a towing apparatus 3 movable on the water in a river 1; a towing member 4 connected to the towing apparatus 3 at one end, and freely suspended on the water in the river 1 at the other end; and a stream regime measurement means 13 provided in the towing apparatus 3, and measuring a stream regime in the river 1. Since a first tension adjustment means 5 for applying a tension to the towing member 4 is provided in the towing apparatus 3, the towing apparatus 3 can be towed without loosing the towing member 4. The towing member 4 is prevented from being loosed, contacting the water and being pulled by flowing water and driftwoods. The towing apparatus 3 is safely towed. Additionally, the towing apparatus 3 is smoothly towed by the towing member 4, and the certainty for measuring the stream regime and the measurement accuracy can be improved by overcoming a looseness of the towing member 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flow condition measuring apparatus, and more particularly to a flow condition measuring apparatus and a flow condition measuring method for measuring flow information such as flow rate, flow velocity, water depth, flow velocity distribution, river bed shape, etc. Is.

  Obtaining flow information such as river flow rate, flow velocity, water depth, flow velocity distribution, riverbed shape, etc. is extremely important in preventing disasters such as floods caused by heavy rain.

  As a device to acquire flow information, a measurement line is set in the river, and the mobile measurement device that moves along the measurement line and moves along the water surface, and moves and processes the data obtained by the mobile measurement device. There is a measuring apparatus including a base measuring device that detects the position, moving speed, direction, and the like of the measuring device (Patent Document 1).

  The mobile measuring device shown in FIG. 10 includes a floating body that is loaded with a power source and floats on the water surface, and is located upstream of the river 101 with respect to the floating body 102 that floats on the river 101 that flows from right to left in the figure. The water measuring device 106 is moved along the measurement line X using a method of pulling the floating body 102 from a fixed object 103 such as a bridge by a pulling member 104 such as a pulling rope.

  In this way, when towing on the surface of a stream such as a river, a traction member 104 pulling the levitation body 102 is applied with a traction force balanced with the flow R of the river 101, and a bridge or the like. The movable measuring device 106 can be towed along the measurement line X with a certain degree of accuracy.

  However, in the still water area where the river 101 does not flow locally or in the reverse flow area where water flows locally from the downstream direction to the upstream direction, due to the weight of the pulling member 104 itself and the influence of the flowing direction, The levitation body 102 moves in the upstream direction which is the traction direction, the traction member 104 is loosened, and the force intended by the tow person K cannot be applied to the levitation body 102 via the traction member 104, and the desired It was difficult to tow the levitation body 102 in the position direction, and there was a problem that accurate flow conditions could not be measured.

As a means for solving this problem, as shown in FIG. 11, a supporting rope 105 is bridged from both banks 101a and 101b of the river 101, and a part of the traction member 104 is placed on the supporting rope 105. There is a method of applying tension to the pulling member 104 so that the pulling member 104 does not land on the water surface. By this method, the slack of the traction member 104 is eliminated, and when the floating body 102 from the tow person K moves in the traction direction due to the weight of the traction member 104 itself and the influence of the flowing direction such as the static water region and the reverse flow region. In addition, the mobile measuring device 106 can be towed to a desired position such as moving in the direction parallel to the measurement line X.
JP 2006-208300 A

  However, the method of bridging the support rope 105 from both banks of the river and applying tension to the tow rope 104 has a problem that is difficult to solve in practice.

  There are various problems in the method of suspending the supporting rope 105 from both banks 101a and 101b of the river 101. First, the implementation of the river 101 when the river width is large. There are problems. In this case, it is virtually impossible to manually suspend the support rope 105 so that it does not land on the surface of the water, and it is necessary to prepare a device that stretches the support rope 105 on the surface of the water. There is a problem that cost and preparation take time.

  Secondly, since the supporting rope 105 is stretched slightly on the surface of the water, it is predicted that the supporting rope 105 will be washed away by the power of driftwood and flowing water during a flood due to heavy rain. There is a problem that the workers W1 and W2 who stretch the supporting rope 105 on both banks 101a and 101b have a risk of being dragged by the supporting rope 105 and falling into the river 101.

  Thirdly, there is a problem regarding labor costs due to the fact that workers W1 and W2 are arranged on both banks 101a and 101b and the supporting rope 105 is stretched over the workers W1 and W2.

  That is, in order to support the supporting rope 105 so as not to reach the water surface on both banks 101a and 101b and to prevent the pulling member 104 from landing on the water surface, the supporting rope 105 and the supporting rope are supported. It is necessary to have multiple humans who support 105 so that they can not be dragged to the river 101 together with the supporting rope 105, and in the event of a disaster such as a flood, it is necessary to increase the number of personnel for safety reasons. There was a flow measurement device that was expensive in terms of personnel costs.

  An object of the present invention is to provide a flow condition measuring apparatus and a flow condition measuring method that improve the towing operability of a moving measuring instrument on the water surface, which improves the safety, certainty, and measurement accuracy, and solves the above problems. To do.

  The invention of claim 1 includes a towing device capable of moving on the water surface of a river, a traction member having one side connected to the towing device and the other side suspended in a suspended state on the water surface of the river, and the towing device. A flow condition measuring device provided with a flow condition measuring means capable of measuring the flow condition of the river, wherein the tow device includes a first tension adjusting means capable of applying tension to the traction member. That is.

  According to a second aspect of the present invention, in the flow condition measuring device according to the first aspect, the first tension adjusting means is capable of imparting a propulsive force to the towing device from the upstream side to the downstream side in the river flow. It has a means.

  According to a third aspect of the present invention, there is provided the flow condition measuring apparatus according to the first aspect, wherein the first tension adjusting means is provided to the tow device in a bidirectional flow from the upstream side to the downstream side and from the downstream side to the upstream side in the river flow. Is provided with bidirectional propulsion means capable of imparting propulsive force to

  According to a fourth aspect of the present invention, in the flow state measuring device according to the second or third aspect, the propulsion means includes an aerial propeller.

  According to a fifth aspect of the present invention, in the flow state measuring device according to any one of the second to fourth aspects, the first tension adjusting unit includes a propulsive force adjusting unit capable of adjusting the propulsive force. It is.

  A sixth aspect of the present invention is the flow state measuring device according to any one of the first to fifth aspects, further comprising a second tension adjusting means capable of winding and rewinding the other side of the traction member. It is.

  A seventh aspect of the present invention is the flow state measuring device according to any one of the first to sixth aspects, wherein the first tension adjusting means is provided so as to be operable by a remote operation means.

  According to an eighth aspect of the present invention, a towing device provided with flow condition measuring means is floated on a water surface of a river, the towing device is pulled by a towing member, and the towing device is arranged along a towing line arbitrarily set in the river. A flow condition measuring method for measuring the flow condition of the river by moving the water surface, comprising: a first tension adjusting means capable of imparting a propulsive force to the towing device from upstream to downstream in the flow of the river; The first tension adjusting means applies a propulsive force to the towing device from the upstream side to the downstream side in the river flow, and applies tension to the traction member, thereby bringing the traction member onto the water surface. It can be held in a suspended state.

  A ninth aspect of the present invention is the flow condition measuring method according to the eighth aspect, wherein the first set point and the second set point are provided on both sides of the river on the towing line, respectively. Are set as the starting point and arrival point of the towing device, the second setting point is set as the turning point of the towing device, and the towing device is reciprocated on the towing line.

  A tenth aspect of the invention is the flow state measuring method according to the eighth or ninth aspect, further comprising second tension adjusting means capable of winding and unwinding the traction member, and winding or unwinding the traction member. By doing so, the tension of the traction member is adjusted.

  The invention of claim 11 is the flow state measurement method according to any one of claims 8 to 10, wherein the first tension adjusting means is operated by remote control.

  According to the invention of claim 1, it becomes possible to tow the towing device without loosening the towing member, and the towing member is prevented from loosening and landing on the surface of the water and being pulled by flowing water or driftwood, and towed safely. Allows towing the device. Furthermore, by eliminating the slack of the traction member, the towing device can be smoothly pulled by the traction member, and it is possible to improve the reliability and measurement accuracy of the flow condition measurement.

  According to the second aspect of the present invention, it is possible to reliably apply tension to the traction member even in a place where there is no river flow or in a reverse flow, and it is possible to always eliminate the slack of the traction member. As a result, the towing device can be smoothly pulled by the towing member, and the reliability of the flow condition measurement and the measurement accuracy can be improved.

  According to the invention of claim 3, in a place where there is no flow of the river or a place where the reverse flow occurs, the towing device is given a propulsive force to the downstream side in the flow of the river, and the tension is surely applied to the traction member. It becomes possible to grant. Also, in places where there is a large river flow such as floods, the towing device is given a propulsive force to the upstream side of the river flow to reduce excessive tension on the towing member, so that the towing member's towing member The towing device can be pulled smoothly and the towing device can be smoothly pulled to improve the reliability and measurement accuracy of the flow conditions, and the tower is dragged into the river. The possibility of an accident at the water's edge can be reduced, and the safety of flow measurement can be improved. Furthermore, even when the towing device is obstructed by algae and foreign objects present on the riverbed, towing the towing device by avoiding the algae and foreign objects on the riverbed by propelling the towing device in both directions Is possible.

  According to invention of Claim 4, the foreign material which flows on the water surface of a river or under water surface does not adhere to a propeller, and it becomes possible to provide a towing apparatus with a propulsive force reliably. In addition, since there is no propeller in the water, it is possible to impart a propulsive force to the towing device even in shallow water, and it is possible to measure flow conditions in shallow water.

  According to the invention of claim 5, it becomes possible to always make the tension applied to the towing member appropriate, to make the pulling force of the tow person constant, and towing the towing device smoothly. This makes it possible to improve the accuracy and accuracy of measurement of flow conditions, and reduce the possibility of accidents at the beach, such as when the tractor is dragged into the river, thereby improving the safety of flow measurement. Can be improved.

  According to the invention of claim 6, it is possible to always make the tension applied to the towing member appropriate, to keep the pulling force of the tow person constant, and tow the towing device smoothly. This makes it possible to improve the accuracy and accuracy of measurement of flow conditions, and reduce the possibility of accidents at the beach, such as when the tractor is dragged into the river, thereby improving the safety of flow measurement. Can be improved.

  According to the invention of claim 7, it is possible to adjust the tension from a location far from the waterfront of the river, and reduce the possibility of an accident at the waterfront where the worker falls into the river at the time of flow condition measurement, Improve safety of flow measurement. In addition, since the tension of the traction member can be adjusted by remote control from a distance from the towing device, the river flow condition, the towing device, the traction member, the flow condition of the tower who is pulling the traction member, etc. It is possible to adjust the tension of the traction member by objective judgment while looking over the entire system related to the measurement, and it is possible to improve the safety, certainty, and measurement accuracy of the flow state measurement.

  According to the invention of claim 8, it becomes possible to tow the towing device without loosening the towing member, and the towing member is prevented from loosening and landing on the surface of the water and being pulled by flowing water or driftwood, and towed safely. Allows towing the device. Furthermore, by eliminating the slack of the traction member, the towing device can be smoothly pulled by the traction member, and it is possible to improve the reliability and measurement accuracy of the flow condition measurement.

  According to the ninth aspect of the invention, the labor cost can be reduced by reducing the number of personnel at the second set point, and the possibility of an accident at the waterside can also be reduced by reducing the number of personnel near the riverbank. In addition, the towing device moves back and forth on the towing line and measures the river flow in the river at the same point multiple times, making it possible to measure the flow more reliably and improve the measurement accuracy in the flow measurement. Improvement will be achieved.

  According to the invention of claim 10, the tension applied to the traction member can always be made appropriate, the force of pulling the traction member of the tow person can be made constant, and the towing device can be pulled smoothly. This makes it possible to improve the accuracy and accuracy of measurement of flow conditions, and reduce the possibility of accidents at the water's edge, such as when the tractor is dragged into the river. Can be improved.

  According to the invention of claim 11, it is possible to adjust the tension of the traction member from a location far from the waterfront of the river, and the possibility of an accident at the waterfront where an operator falls into the river at the time of flow condition measurement. Reduce the flow rate measurement safety. In addition, since the tension of the traction member can be adjusted by remote control from a distance from the towing device, the river flow condition, the towing device, the traction member, the flow condition of the tower who is pulling the traction member, etc. It is possible to adjust the tension of the traction member by objective judgment while looking over the entire system related to the measurement, and it is possible to improve the safety, certainty, and measurement accuracy of the river flow condition measurement.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  1 to 7 show a first embodiment of a flow condition measuring apparatus according to the present invention. FIG. 1 shows an outline of the flow condition measuring apparatus and the flow condition measuring method according to the present invention.

  In FIG. 1, reference numeral 1 denotes a river, and the direction from the top to the bottom indicates the flow R direction at an arbitrary point where the flow condition is measured in the river 1.

  In the river 1, a towing line X as an arbitrary measurement line is set so as to connect both banks 1a and 1b of the river 1.

  The flow condition measuring device 2 according to the present invention includes a towing device 3 that is a mobile measuring device floated on the water surface of the river 1 so as to be positioned on the towing line X, and a towing member that is connected to the towing device 3 on one side. 4 and first tension adjusting means 5 capable of applying tension to the pulling member 4.

  The pulling member 4 is formed in a string shape and is made of a rope, a wire or the like having a certain strength, and the material and the structure are not particularly limited as long as they have the above-described characteristics.

  And with respect to this flow condition measuring device 2, as the arrangement of the personnel at the time of the flow condition measurement, the bridge 6 which is a fixed object located on the upstream side of the towing device 3 is gripped on the other side of the traction member 4, A tow person K for towing the towing device 3 is arranged. A second tension adjusting means M is provided between the puller K and the other side of the pulling member 4.

  For the second tension adjusting means M, for example, a reel device and a winch device that can freely wind and unwind the other side of the traction member are used. Here, as the reel device and winch device used for the second tension adjusting means M, one-touch type operation means for automatically winding and / or rewinding the other side of the pulling member 4 by operating a button or a switch. Those equipped with are effective. Further, as the reel device used for the second tension adjusting means M, a hand-held type, preferably one that can be handled with one hand is effective.

  In addition, the first set point A, which is the starting point of the towing device 3 that is located on the shore 1a side on the towing line X that is a measurement line connecting both the shores 1a and 1b of the river 1 and moves along the towing line X, is Arranges worker W1.

  Furthermore, an operator W2 is arranged at a second set point B that is located on the shore 1b side on the towing line X and is the arrival point of the towing device 3 that moves along the towing line X.

  Hereinafter, the first tension adjusting means 5 will be described in detail with reference to FIGS.

  The first tension adjusting means 5 includes a propeller 7 as a propulsion means capable of converting a rotational force into a propulsive force of the towing device 3, a power unit 8 capable of imparting the rotational force to the propeller 7, and starting / And a control unit 9 capable of controlling termination.

  The propeller 7 is an aerial propeller, and is attached so as to be located in the air when the towing device 3 is floated on the water surface of the river 1.

  For the power unit 8, a gasoline engine, an electric motor, or the like can be used as appropriate.

  As shown in FIG. 3, the control unit 9 includes a remote operation means 10 that can start and stop the power unit 8 by remote control of the power unit 8.

  Further, the remote control means 10 controls the number of revolutions of the engine or electric motor used for the power unit 8, controls the output of the engine or electric motor, etc., and the propulsive force from the propeller 7. Output control means 11 serving as a propulsive force adjusting means capable of controlling the strength of FT is provided.

  Next, with reference to FIG. 4, detailed description of the towing device 3, the traction member 4, and the first tension adjusting means 5 in the flow condition measuring device 2 will be given.

  The towing apparatus 3 is composed of a levitating body 12 that can float on the water and has a tapered shape in plan view as shown in FIG. 1, and a flow condition measuring means 13 that is mounted on a storage portion (not shown) of the levitating body 12. Is done.

  Examples of the flow condition measuring means 13 include an ultrasonic velocimeter, a laser velocimeter, etc., which can be appropriately changed according to the flow condition information to be obtained, the natural condition at the time of measurement, the condition of the river bed in the river 1, and the like. is there.

  And the data measured by the flow condition measuring means 13 may be stored in a storage means (not shown) provided integrally with the flow condition measuring means 13, or may be wirelessly or wiredly illustrated. The measured data may be transferred and stored in an external storage means that does not.

  In FIG. 4, the tow device 4 is floated on the water surface of the river 1 with the right hand side as the upstream direction of the flow R in the river 1 with the top of the floating body 12 facing the upstream side.

  The towing member 4 is connected to a connecting member 14 provided at the head of the levitation body 12, one side of which is connected to the connecting member 14, and the other side is held by the tow person K disposed on the bridge 6 located on the upstream side of the towing device 3. Is done.

  Then, the propeller 7 of the first tension adjusting means 5 is directed to the towing device 3 in the direction opposite to the traction direction in which the traction member 4 is pulled from the tow person K, that is, from the upstream side of the flow R in the river 1. It is attached so as to apply the propulsive force FT in the direction of the flow R toward the downstream side.

  The operation of the above configuration will be described. The flow state measuring method using the flow state measuring apparatus 2 of the present invention is performed according to the procedure (steps S1 to S5) shown in FIG.

  First, a towing line X is set for a desired position in the river 1 (step S1).

  Next, a tow person K holding the other side of the towing member 4 is placed on the bridge 6 on the upstream side of the towing line X, and an operator W1 is set at each of the set points A and B of the towing line X. , W2 is deployed.

  Then, the towing device 3 is floated with respect to the first set point A so that the top of the levitating body 10 faces the upstream direction of the river 1.

  Subsequently, the control unit 9 of the first tension adjusting means 5 is operated to start the power unit 8, and the towing device 3 is propelled along the flow R direction from the upstream side to the downstream side in the flow R of the river 1. A force FT is applied (step S2).

  Next, the tow person K uses the force FR that works to push the towing device 3 from the upstream to the downstream in the flow R of the river 1 in the direction R by the flow R of the river 1, and the first tension adjusting means 5. The towing device 4 is prevented from landing on the water surface of the river 1 against the resultant force with the propulsive force FT applied to propel the towing device 3 from upstream to downstream of the flow R in the river 1 in the flow R direction. While the traction force FK is applied to the other side of the traction member 4 in the direction opposite to the flow R direction, the towing device 3 passes the water surface of the river 1 from the set point A on the towing line X and enters the second direction. Move over the bridge 6 to reach the set point B (steps S3 and S4).

  When the towing device 3 arrives at the second set point B, the control unit 9 is operated, the power unit 8 is stopped (step S5), the towing device 3 is pulled up from the river 1, and the flow condition of the river 1 is reached. Complete the measurement.

  After that, the flow condition measuring means 13 analyzes the data such as the flow velocity in the vicinity of the towing line X collected in the storage means (not shown), and various flows such as the flow rate of the river 1, flow velocity, water depth, flow velocity distribution, river bed shape, etc. Convert to status information.

  In addition, while the towing device 3 moves from the first set point A to the second set point B along the tow line X on the water surface of the river 1, Due to the propulsive force FT by the first tension adjusting means 5, tension from upstream to downstream of the river 1 is working.

  As a result, the towing device 3 flows backward in the direction opposite to the flow direction R of the river, not in the static water area where there is no flow or the flow direction of the river 1 from the upstream to the downstream direction R. Even if the force FR that is placed in the reverse flow area and works to push the towing device 3 in the flow R direction is lost, the tow person K pulls the other side of the traction member 4 in the direction opposite to the flow R direction. The traction member 4 is suspended from the surface of the river 1 by the traction force FK and the applied force FT that pulls one side of the traction member 4 generated by propelling the towing device 3 in the flow R direction. Sufficient tension is maintained to hold it. That is, an appropriate tension state is maintained on the traction member 4 so that the towing device 3 moves reliably on the towing line X set in the river 1.

  Further, when the flow of the river 1 in the flow direction R such as flooding is large, the output control means 11 lowers the output of the power unit 8 to reduce the propulsive force FT of the towing device 3, and the pulling force FK of the tow person K Make it small. Further, when the flow rate in the flow direction R of the river 1 is large, even if the power control unit 8 is stopped by the remote control means 10, the traction member 4 is sufficient to hold the suspended state from above the water surface of the river 1. Tension is maintained.

  Further, by providing the second tension adjusting means M, when the flow of the river 1 in the flow R direction such as flood is large, the operation means (not shown) of the second tension adjusting means M is operated to pull the The member 4 is rewound to adjust the tension of the pulling member 4 so that the pulling force FK of the puller K can be reduced.

  Further, since the second tension adjusting means M is provided, when the tension of the traction member is insufficient, the operation means (not shown) of the second tension adjustment means M is operated to wind the traction member 4. By adjusting the tension of the pulling member 4 by increasing the pulling and pulling force FK, the pulling member 4 is held at a sufficient tension to hold the suspended state from the water surface of the river 1.

  Further, another embodiment of the flow condition measuring method will be described with reference to FIGS. 6 to 7. As shown in FIG. 6, the arrangement of the worker W2 at the second set point B arranged in FIG. 1 is abolished. This is performed according to the procedure shown in FIG. 7 (steps S6 to S11).

  That is, at the time of flow condition measurement, the tower K that starts from the first set point A uses the second set point B as a turning point and returns the tow device 3 to the first set point A. Moves the towing device 3 back and forth on the towing line X.

  In the flowchart of FIG. 7, the case where the towing device 3 is reciprocated once on the towing line X with the first set point A as the starting point and the arrival point, the second set point B as the turning point, will be described. However, the reciprocating movement of the towing device 3 on the towing line X may be a plurality of times.

  As described above, in the embodiment, corresponding to claim 1, the towing device 3 that can move on the water surface of the river 1, one side is connected to the towing device 3, and the other side is suspended on the water surface of the river 1. A tow device 4 comprising a traction member 4 spanned in a state and a flow state measuring means 13 provided in the tow device 3 and capable of measuring the flow state of the river 1, wherein the tow device 3 is provided with the first tension adjusting means 5 capable of applying tension to the pulling member 4, the towing device 3 can be pulled without loosening the pulling member 4, and the pulling member 4 is loosened. The towing device 3 by the towing member 4 can be prevented from being pulled by flowing water or driftwood, and the towing device 3 can be safely towed and the slack of the towing member 4 is eliminated. Traction will also go smoothly, and measurement of flow conditions It makes it possible to improve the reliability and measurement accuracy.

  Moreover, in the said Example, corresponding to Claim 2, the said 1st tension adjustment means 5 can give the propulsion force FT to the said towing apparatus 3 from the upstream in the flow R of the said river 1 to the downstream. By providing the propulsion means 7, it is possible to reliably apply tension to the traction member 4 even in places where there is no flow of the river 1 or in a reverse flow, and the loosing of the traction member 4 is always eliminated. As a result, the towing device 3 can be smoothly pulled by the towing member 4, and the reliability of the flow condition measurement and the measurement accuracy can be improved.

  Further, in the embodiment, corresponding to claim 4, the propulsion means 7 is provided with an aerial propeller, thereby preventing foreign matter flowing on the water surface of the river 1 or below the water surface from adhering to the propeller 7 and reliably. It is possible to apply the propulsive force FT to the towing device 3 and because the propeller 7 is not in the water, it is possible to apply the propulsive force FT to the towing device 3 even in shallow water. Enable measurement.

  Further, in the embodiment, corresponding to claim 5, the first tension adjusting means 5 is provided with the propulsive force adjusting means 11 capable of adjusting the propulsive force FT, so that the tension applied to the traction member 4 is always applied. The force FK that pulls the towing member 4 of the tow person K can be kept constant, the towing device 3 can be smoothly pulled, and the flow rate can be reliably measured. It becomes possible to improve the measurement accuracy, reduce the possibility of an accident at the water's edge such as when the tower K is dragged into the river 1, and improve the safety of the flow condition measurement.

  Further, in the embodiment, corresponding to claim 6, the second tension adjusting means M capable of winding and rewinding the other side of the traction member 4 is provided, so that the tension applied to the traction member is always appropriate. To improve the reliability and measurement accuracy of the flow conditions, making it possible to pull the tow device smoothly, making the towing device to be pulled smoothly. In addition, it is possible to reduce the possibility of a waterside accident such as a dragged person being dragged into a river and improve the safety of flow condition measurement.

  Further, in the embodiment, corresponding to claim 7, the first tension adjusting means 5 is provided so as to be operable by the remote operation means 14, so that the tension of the traction member 4 can be adjusted at the waterside of the river 1. It is possible to carry out from a remote location, reduce the possibility of a waterfront accident such as an operator falling into the river 1 when measuring the flow condition, and improve the safety of the flow condition measurement. In addition, since the tension of the towing member 4 can be operated by remote control from a position away from the towing device 3, the flow condition of the river 1, the towing device 3, the towing member 4, and the towing person towing the towing member 4 It is possible to adjust the tension of the traction member 4 by objective judgment while looking at the whole system related to the flow condition measurement such as K, and to improve the safety, reliability and measurement accuracy of the flow condition measurement. It becomes possible.

  Further, in the embodiment, corresponding to claim 8, the towing device 3 provided with the flow state measuring means 13 is floated on the water surface of the river 1, the towing device 3 is pulled by the towing member 4, and the towing device 3 Is a flow state measuring method for measuring the flow state of the river 1 by moving the water surface along the towing line X arbitrarily set in the river 1, wherein the tow device 3 is moved from upstream in the flow R of the river. First tension adjusting means 5 capable of applying a propulsive force FT downstream is provided, and the first tension adjusting means 5 propels the towing device 3 from the upstream side to the downstream side in the flow R of the river 1. By applying a force FT and applying tension to the traction member 4, the traction member 4 can be held in a suspended state on the water surface, thereby towing the towing device 3 without loosening the traction member 4. Made it possible to In this way, it is possible to prevent the towing member 4 from loosening and landing on the water surface and being pulled by running water or driftwood, towing the towing device 3 safely, and further eliminating the slack of the towing member 4 As a result, the towing device 3 can be smoothly pulled by the towing member 4, and it is possible to improve the reliability and measurement accuracy of the flow conditions.

  Further, in the embodiment, corresponding to claim 9, the first set point A and the second set point B are provided on both sides 1a, 1b side of the river 1 on the towing line X, The first set point A is a starting point and an arrival point of the towing device 3, the second set point B is a turning point of the towing device 3, and the towing device 3 is reciprocated on the towing line X By doing so, personnel costs can be reduced by reducing the number of personnel at the second set point B, and the possibility of an accident at the waterside can also be reduced by reducing the number of personnel near the riverbank 1b. Furthermore, the towing device 3 moves back and forth on the towing line X and measures the flow condition of the river bed in the river 1 at the same point multiple times, thereby enabling more reliable measurement of the flow condition. Measurement accuracy will be improved.

  Further, in the embodiment, corresponding to claim 10, the second tension adjusting means M capable of winding and rewinding the traction member 4 is provided, and by winding or rewinding the traction member 4, By adjusting the tension of the traction member 4, the tension applied to the traction member 4 can always be made appropriate, the force FK pulling the traction member 4 of the tow person K can be made constant, and the towing device 3 Traction can be performed smoothly, and the reliability and measurement accuracy of flow conditions can be improved, and the possibility of an accident at the water's edge, such as when the tractor K is dragged into the river 1 It can reduce and improve the safety of flow condition measurement.

  Moreover, in the said Example, corresponding to Claim 11, the tension | tensile_strength adjustment of the traction member 4 is performed from the place away from the waterside of the river 1 by operating the said 1st tension adjustment means 5 by remote control. This makes it possible to reduce the possibility of an accident at the water's edge, such as the operator K falling into the river 1 when measuring the flow condition, and improving the safety of the flow condition measurement. Further, since the tension of the towing member 4 can be adjusted by remote control from a position away from the towing device 3, the flow condition of the river 1, the towing device 3, the towing member 4, and the towing member 4 are towed. It is possible to adjust the tension of the traction member 4 by objective judgment while looking at the whole system related to the flow condition measurement of the tow person K etc., and the safety, reliability and measurement accuracy of the flow condition measurement in the river 1 Can be improved.

  FIGS. 8 to 9 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment, and detailed description thereof will be omitted. The propeller 15 as propulsion means is a bidirectional propeller capable of moving forward and backward.

  The propeller 15 is an aerial propeller, and is attached so as to be located in the air when the towing device 3 is floated on the water surface of the river 1.

  Further, the propeller 15 is provided so as to be able to switch between normal rotation and reverse rotation by a transmission means 17 provided in a power transmission unit 16 between the propeller 15 and the power unit 8. The speed change means 17 is provided so as to be arbitrarily switched by a forward / reverse switching means 18 provided in the remote control means 10.

  As shown in FIG. 9, by this propeller 15, the towing device 3 causes the propulsion force FTa along the flow R direction from the upstream side to the downstream side in the flow R of the river 1 and the downstream side in the flow R of the river 1. A propulsive force FTb in the direction opposite to the flow R direction is provided upstream so that it can be applied.

  As a result, when the towing device 3 is caught by riverbed algae or foreign matter, the propulsion force FTa or FTb is applied to the towing device 3 by operating the forward / reverse switching means 18, and from the riverbed algae or foreign matter. Let go.

  In addition, when the water surface of the river 1 where the towing device 3 is placed is in a still water region or a reverse flow region, the propeller 15 causes the propeller 15 to drive the towing device 3 from the upstream side to the downstream side in the flow R of the river 1 along the direction R. By applying FTa, the tension applied to the pulling member 4 is increased. Further, when the water surface of the river 1 where the towing device 3 is placed has a large flow along the flow direction R such as flood, the propeller 13 causes the towing device 3 to move from the downstream side to the upstream side in the flow R of the river 1. Propulsive force FTb in the direction opposite to the flow R direction is applied, and excessive tension applied to the traction member 4 is reduced.

  The present embodiment has the same operations and effects as the first embodiment, corresponding to claims 1 and 4-11.

  Further, in the present embodiment, in correspondence with claim 3, the first tension adjusting means 5 is provided in the towing device 3 in both directions from the upstream side to the downstream side and from the downstream side to the upstream side in the flow R of the river 1. By providing the bidirectional propulsion means 15 capable of applying the propulsive forces FTa and FTb to the tow device 3 in the downstream of the flow R of the river 1 in the place where there is no flow R of the river 1 or in the place where the reverse flow occurs. By applying the propulsive force FTa to the side, it is possible to reliably apply tension to the traction member 4. Further, in a place where the flow R of the river 1 is large such as a flood, the propulsion force FTb is applied to the towing device 3 upstream in the flow R of the river 1 to reduce excessive tension applied to the traction member 4. The force FK that pulls the towing member 4 of the tow person K can be reduced, the towing device 3 can be smoothly pulled, and the reliability and measurement accuracy of the flow condition can be improved. It is possible to reduce the possibility of an accident at the beach such as when the tower K is dragged into the river 1 and to improve the safety of the flow condition measurement. Furthermore, even when the towing device 3 is obstructed by the algae and foreign matter present on the river bed, the towing device 3 is pushed in both directions to avoid the algae and foreign matter on the river bed and It becomes possible to tow.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above embodiment, the control unit is provided with remote control means, and the power unit is started / stopped by remote operation. However, not only the remote operation but also the power unit is started / stopped by direct operation. It may be. Moreover, you may make it start and stop a power part by direct operation, without providing a remote-control means in a control part. Similarly, the control of the output of the power unit is performed by remote operation. However, the output of the power unit may be controlled not only by remote operation but also by direct operation. Further, the output of the power unit may be controlled by direct operation without providing the control unit with remote operation means.

  Moreover, in addition to the ultrasonic velocimeter and laser velocimeter described above, the flow state measuring means mounted on the towing device can be an ultrasonic deepening device, a photographing device such as a camera or a video camera, a temperature sensor, an acceleration sensor, GPS ( (Global Positioning System), fish finder, etc. These may be combined as appropriate. This makes it possible to obtain various information related to rivers in addition to the flow conditions described above.

  Furthermore, although the above-described propulsion unit and bidirectional propulsion unit have been described by taking an air propeller as an example, it may be an underwater propeller.

  In the above-described embodiment, the second tension adjusting means is provided between the other side of the traction member and the traction person. The towing device may be pulled by directly gripping the tow.

It is the schematic of the flow condition measuring apparatus and flow condition measuring method which show 1st Example of this invention. FIG. 3 is a schematic view of the first tension adjusting means. It is a block diagram which shows the detailed structure of a 1st tension adjustment means same as the above. It is a side view of a flow condition measuring apparatus same as the above. It is a flowchart which shows the measurement procedure of a flow condition measuring method same as the above. It is the schematic of the flow condition measuring apparatus and flow condition measuring method of other embodiment in a flow condition measuring method same as the above. It is a flowchart which shows the measurement procedure of other embodiment in a flow condition measuring method same as the above. It is a block diagram which shows the detailed structure of the 1st tension | tensile_strength adjustment means in the flow condition measuring apparatus and flow condition measuring method which show 2nd Example of this invention. It is a side view of a flow condition measuring apparatus same as the above. It is a flow condition measuring apparatus and a flow condition measuring method in a prior art. This is another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 River 2 Flow condition measuring device 3 Towing device 4 Towing member 5 First tension adjusting means 7 Air propeller
13 Flow measurement means
14 Remote control means
15 Propeller for bidirectional propulsion (bidirectional propulsion means)
A First set point B Second set point FT, FTa, FTb Propulsive force M Second tension adjusting means X Towing line

Claims (11)

A towing device capable of moving on the surface of a river, a tow member connected to the tow device on one side and suspended in a suspended state on the water surface of the river, and a tow device provided in the tow device, A flow condition measuring device equipped with a flow condition measuring means capable of measuring the condition,
The flow condition measuring device according to claim 1, wherein the towing device includes first tension adjusting means capable of applying tension to the pulling member. 2. The flow condition measuring device according to claim 1, wherein the first tension adjusting unit includes a propulsion unit capable of imparting a propulsive force to the towing device from an upstream side to a downstream side in the river flow. . The first tension adjusting means includes bidirectional propulsion means capable of imparting propulsive force to the towing device in both directions from upstream to downstream and downstream to upstream in the river flow. The flow condition measuring device according to claim 1. The flow condition measuring device according to claim 2 or 3, wherein the propulsion means includes an air propeller. The flow state measuring device according to any one of claims 2 to 4, wherein the first tension adjusting unit includes a propulsive force adjusting unit capable of adjusting the propulsive force. The flow rate measuring device according to any one of claims 1 to 5, further comprising second tension adjusting means capable of winding and rewinding the other side of the pulling member. The flow rate measuring device according to any one of claims 1 to 6, wherein the first tension adjusting unit is provided so as to be operable by a remote control unit. Floating a towing device provided with flow condition measuring means on the water surface of the river, pulling the towing device by a towing member, moving the tow device along the towing line arbitrarily set in the river, It is a flow state measuring method for measuring a flow state of a river, and includes a first tension adjusting unit capable of imparting a propulsive force to the towing device from upstream to downstream in the river flow, and the first tension adjustment. By means, the propulsion force is applied to the towing device from the upstream side to the downstream side in the flow of the river, and the tension is applied to the traction member, so that the traction member can be held in a suspended state on the water surface. A flow measurement method characterized by A first set point and a second set point are provided on both sides of the river on the towing line, respectively, and the first set point is set as a starting point and an arriving point of the towing device, and the second 9. The flow condition measuring method according to claim 8, wherein the set point is set as a turning point of the tow device, and the tow device is reciprocated on the tow line. 9. The second tension adjusting means capable of winding and rewinding the traction member, and adjusting the tension of the traction member by winding or rewinding the traction member. 9. The flow measurement method according to 9. The flow state measuring method according to any one of claims 8 to 10, wherein the first tension adjusting means is operated by remote control.

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