JP2018105651A - Method for measuring moisture content on ice surface and device for measuring moisture content on ice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily measure moisture content on an ice surface.SOLUTION: There are provided a method and a device for measuring moisture content on an ice surface. The method for measuring moisture content on an ice surface comprises a water absorbing step of bringing a water-absorbing body 2 made of a water-absorbing material into contact with an ice surface S for a predetermined time and holding the water-absorbing body, and a step of separating the water-absorbing body 2 from the ice surface S and checking the amount of water absorption of the water-absorbing body 2 when the predetermined time elapses. A measuring device 1 includes the water-absorbing body 2 made of the water-absorbing material and a jig 3 for bringing the water-absorbing body 2 into contact with the ice surface S.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method and apparatus for measuring the amount of moisture on an ice surface.

  Patent Document 1 below proposes a method for evaluating the performance of a tire on ice by running the tire on an ice surface. In this test method, the on-ice performance of the tire is evaluated based on the friction coefficient of the tire running on the ice surface.

JP 2006-156681 A

  The condition of the ice surface was constantly changing, and it was difficult to evaluate the performance of the tire on ice under common conditions. In particular, when a thin water film is formed on the ice surface, the ice surface friction coefficient greatly changes when the amount of water changes. Therefore, for example, in order to prepare test conditions, there has been a demand for a method and apparatus that can easily measure the amount of water on the ice surface.

  The present invention has been devised in view of the actual situation as described above, and has as its main object to provide a method and apparatus that can easily measure the amount of water on the ice surface.

  The present invention is a method for measuring the amount of water on an ice surface, wherein a water absorbing step of holding a water absorbing body made of a water absorbing material in contact with the ice surface for a predetermined time, and the time And the step of separating the water absorbent from the ice surface when the time has elapsed and examining the amount of water absorbed by the water absorbent.

  In the method for measuring the amount of water on the ice surface according to the present invention, the water absorbing body is discolored by water absorption, and the step of examining the water absorbing amount is performed on the basis of the size of the discolored portion of the water absorbing body. It is desirable that

  In the method for measuring the amount of water on the ice surface according to the present invention, the step of examining the amount of water absorption is preferably performed based on a change in the mass of the water absorber.

  In the method for measuring the amount of water on the ice surface according to the present invention, the water absorbing body is a long body, and the water absorbing step holds the water absorbing body so that the longitudinal direction of the water absorbing body is substantially perpendicular to the ice surface. It is desirable to use a jig.

  In the method for measuring the amount of water on the ice surface according to the present invention, it is desirable that the water absorption step simultaneously brings a plurality of the water absorbent bodies into contact with the ice surface.

  The present invention is an apparatus for measuring the amount of water on an ice surface, and includes a water absorbent body made of a water absorbent material, and a jig for bringing the water absorbent body into contact with the ice surface. To do.

  In the apparatus for measuring the amount of moisture on ice according to the present invention, it is desirable that the water-absorbing body discolors due to water absorption.

  In the water content measuring apparatus on ice according to the present invention, it is preferable that the water absorbing body has a scale for measuring the size of the discolored portion.

  In the moisture content measuring apparatus on ice according to the present invention, the water absorbing body is a long body, and the jig holds the water absorbing body so that its longitudinal direction is substantially perpendicular to the ice surface. Is desirable.

  In the water content measuring apparatus on ice according to the present invention, it is preferable that the jig holds a plurality of the water absorbing bodies.

  In the water content measuring apparatus on ice according to the present invention, it is preferable that the width of the water absorbent gradually decreases toward a portion of the water absorbent that contacts the ice surface.

  The method for measuring the amount of water on the ice surface according to the first invention of the present application includes a water absorption step of holding a water absorbent body made of a water absorbent material in contact with the ice surface for a predetermined time, and water absorption when time passes. And a step of separating the body from the ice surface and examining the water absorption amount of the water absorbing body. Thus, according to 1st invention of this application, the moisture content on an ice surface can be measured easily.

  In addition, the first invention of the present application can measure the amount of water on the ice surface in advance, for example, on the ice surface used for tests or competitions performed on ice, so that the condition of the ice surface is aligned, It is useful for evaluating the experimental results in consideration of the amount of water on the ice surface.

  The device for measuring the amount of moisture on ice according to the second invention of the present application includes a water absorbent body made of a water absorbent material and a jig for bringing the water absorbent body into contact with the ice surface. Thus, according to the second invention of the present application, the amount of water on the ice surface can be measured with a simple configuration.

  In addition, the second invention of the present application can measure the amount of water on the ice surface used in, for example, tests and competitions performed on ice, so that the condition of the ice surface is aligned, and further the water content on the ice surface It is useful for evaluating the experimental results considering the amount.

It is a perspective view which shows an example of the moisture content measuring apparatus on ice. It is a front view of FIG. (A) is a perspective view which shows an example of a water absorbing body, (b) is a perspective view which shows the state which the water absorbing body of (a) absorbed. It is a flowchart which shows an example of the process sequence of the moisture content measuring method on an ice surface. It is a flowchart which shows an example of the process sequence of a water absorption process. It is a perspective view which shows the water absorbing body of other embodiment of this invention. It is a perspective view which shows the jig | tool of other embodiment of this invention. It is a perspective view which shows the jig | tool of other embodiment of this invention. It is a flowchart which shows the process sequence of the moisture content measuring method on the ice surface of other embodiment of this invention. It is a perspective view which shows the jig | tool of other embodiment of this invention. It is a front view of FIG. It is a perspective view which shows the jig | tool of other embodiment of this invention. FIG. 13 is a partial perspective view of FIG. 12. It is a disassembled perspective view of FIG. It is a perspective view which shows the water absorption body holding | maintenance means of other embodiment of this invention. It is a perspective view which shows the holding part of an open state. (A) is a graph showing the relationship between the size of the water-absorbing body of Examples 1 to 3 and the humidity, and (b) is the size of the portion of the water-absorbing body of the experimental example and the water film. It is a graph which shows the relationship with thickness.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an example of an apparatus for measuring the amount of moisture on ice (hereinafter sometimes simply referred to as “measuring device”) 1. FIG. 2 is a front view of FIG. The measuring apparatus 1 of this embodiment is for measuring the amount of water on the ice surface S. The ice surface S to be measured is not particularly limited, and can be applied to, for example, ice road surfaces used for performance tests on ice such as tires, skating rinks and hockey links used for competitions, and the like. The measuring device 1 according to the present embodiment includes a water absorbing body 2 and a jig 3.

  FIG. 3A is a perspective view showing an example of the water absorbing body 2. FIG.3 (b) is a perspective view which shows the state which the water absorption body 2 of Fig.3 (a) absorbed. As shown in FIG. 3A, the water absorbing body 2 is for absorbing moisture on the ice surface S (shown in FIG. 2). The water absorbing body 2 is constituted by a water absorbing material 5. The water-absorbing material 5 is not particularly limited as long as it can absorb moisture. For example, filter paper made of cellulose fiber or the like, or a sheet material containing a superabsorbent polymer can be adopted. it can. The water-absorbing material 5 of the present embodiment is composed of filter paper. Moreover, the water absorption speed of the water absorbing body 2 can be appropriately set by changing the mesh of the filter paper.

  The water absorption body 2 of this embodiment is formed in a long body. Furthermore, the water absorbing body 2 has a constant width W1 from one end 2s to the other end 2t in contact with the ice surface S of the water absorbing body 2 in the longitudinal direction. The water absorbing body 2 of the present embodiment is formed in a rectangular shape when viewed from the front. About the width W1, length L1, and thickness T1 of the water absorption body 2, it can set suitably. The width W1 of the water absorbing body 2 is, for example, about 1 to 10 mm. The length L1 of the water absorbing body 2 is, for example, about 30 to 150 mm. The thickness T1 of the water absorbing body 2 is, for example, about 0.1 to 1.5 mm.

  The water absorbing body 2 of the present embodiment changes color due to water absorption. The water-absorbing material 5 is added with a dye (not shown) that can change color by absorbing water. As a result, as shown in FIG. 3B, the water absorbing body 2 has an ice surface S (shown in FIG. 1) depending on the size of the discolored portion 8 (hereinafter, simply referred to as “discolored portion”). ) The amount of water above can be measured. The dye is not particularly limited as long as it can be discolored by water absorption, and for example, Blue No. 1, Green No. 3, or Red No. 40 can be employed. Blue 1 is used as the dye of this embodiment.

  The dye (not shown) may be added to a part of the water-absorbing material 5 or may be added to the entire water-absorbing material 5. As shown in FIG. 3A, the dye according to the present embodiment absorbs water from a portion spaced from the one end 2s of the water absorbing body 2 (that is, the portion contacting the ice surface of the water absorbing body 2) toward the other end 2t. It is added to the range 6 up to the other end 2t of the conductive material 5. Thereby, the water absorbing body 2 can prevent the dye from melting to the ice surface S side. If the dye is melted to the ice surface S side, the size of the discolored portion 8 changes depending on the amount of the dye that has melted, which may prevent data reproducibility.

  The distance L3 from the one end 2s of the water absorbent body 2 to the range 6 where the dye (not shown) is added can be set as appropriate. If the distance L3 is small, the dye may not be prevented from dissolving. Conversely, if the distance L3 is large, there is a possibility that the color cannot be sufficiently changed when the amount of water on the ice surface S (shown in FIG. 2) is small. For this reason, the distance L3 is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3 mm or less.

  The water absorbent body 2 of the present embodiment is desirably provided with a scale 7. With such a scale 7, as shown in FIG. 3B, the size of the discolored portion 8 can be accurately measured. In addition, about the space | interval W2 of the scale 7, it can set suitably. The interval W2 of the scale 7 is set to 0.5 to 3.0 mm, for example.

  As shown in FIGS. 1 and 2, the jig 3 is for bringing the water absorbing body 2 into contact with the ice surface S. The jig 3 includes a base 11 and a water absorbing body holding means 12 that holds the water absorbing body 2.

  The base 11 is configured to include a mounting portion 16 disposed on the ice surface S and a support column 17 extending upward from the mounting portion 16.

  The placement unit 16 is formed in a plate shape. As for the mounting part 16 of this embodiment, the lower surface 16d is formed smoothly. Thereby, the jig | tool 3 can be stably arrange | positioned on the flat ice surface S. FIG. The mounting portion 16 of the present embodiment is formed in a rectangular shape in plan view.

  The support column 17 extends upward from the placement unit 16. The support column 17 of the present embodiment extends vertically with respect to the upper surface of the placement unit 16. Moreover, the support | pillar 17 is formed in the cross-sectional rectangular shape.

  The water absorbent body holding means 12 is configured as an arm 24 extending horizontally from the column 17 of the base 11. The arm 24 has a substantially rectangular cross section. The arm 24 is provided with a sticking surface 18 for fixing a part of the water absorbent body 2 on one side surface in the width direction. The other end 2t side of the water absorbent body 2 is fixed to the sticking surface 18.

  Moreover, the some water absorbing body 2 is affixed on the sticking surface 18 of this embodiment. Thereby, the jig | tool 3 can hold | maintain the some water absorbing body 2. FIG. In this embodiment, the some water absorbing body 2 is being fixed to the sticking surface 18 at a fixed distance in the longitudinal direction of the sticking surface 18 (arm 24). For fixing the water absorbent body 2, it is desirable to use, for example, an adhesive or adhesive tape that can be removed from the affixing surface 18. Note that only one water absorbent 2 may be attached to the attaching surface 18.

  Next, a method for measuring the amount of water on the ice surface of the present embodiment (hereinafter, simply referred to as “measurement method”) will be described. In the measurement method of the present embodiment, the measurement device 1 is used. FIG. 4 is a flowchart illustrating an example of a processing procedure of the measurement method.

  In the measurement method of the present embodiment, first, the water absorbing body 2 is fixed to the jig 3 (step S1). As shown in FIGS. 1 and 2, in step S <b> 1 of the present embodiment, a plurality of water absorbent bodies 2 are attached to the application surface 18 of the water absorbent body holding means 12. The other end 2t side of each water absorbing body 2 is fixed to the sticking surface 18. In the present embodiment, the water absorbing body 2 is held by the jig 3 (water absorbing body holding means 12) so that the longitudinal direction of the water absorbing body 2 is substantially perpendicular to the ice surface S. Here, the term “substantially perpendicular” includes a range in which the angle of the longitudinal direction of the water absorbent body 2 with respect to the normal N perpendicular to the ice surface S is 20 degrees or less.

  In the present embodiment, one end 2s of the water absorber 2 is disposed at the same position as the lower surface 16d of the mounting portion 16 or below the lower surface 16d of the mounting portion 16 in the direction perpendicular to the ice surface S (vertical direction). ing. Thereby, the jig 3 can bring the one end 2 s of the water absorbent body 2 into contact with the ice surface S in the water absorption step S <b> 2 in which the placement portion 16 is disposed on the ice surface S.

  Next, in the measuring method of the present embodiment, the water absorbing body 2 is held in contact with the ice surface S for a predetermined time (water absorbing step S2). FIG. 5 is a flowchart showing an example of the processing procedure of the water absorption step S2.

  In the water absorption step S2 of the present embodiment, first, the water absorption body 2 is brought into contact with the ice surface S (step S21). In step S21, the placement portion 16 of the jig 3 is placed on the ice surface S as shown in FIG. Thereby, in step S21, the one end 2s of the water absorbing body 2 can be brought into contact with the ice surface S.

  In the present embodiment, the plurality of water absorbing bodies 2 are simultaneously brought into contact with the ice surface S. Since each water absorption body 2 is hold | maintained at a fixed distance in the longitudinal direction of the sticking surface 18 (parallel to the ice surface S), the water absorption body 2 can be made to contact the different position of the ice surface S, respectively. it can. Thereby, each water absorption body 2 can absorb the water | moisture content of the ice surface S in the several location of the ice surface S. FIG.

  Next, in the water absorbing step S2, it is determined whether or not a predetermined time has elapsed since the water absorbing body 2 contacts the ice surface S (step S22). In the present embodiment, the user determines whether or not a predetermined time has elapsed. In addition, the time for which the water absorbing body 2 is brought into contact with the ice surface S is appropriately set based on the water absorption of the water absorbing body 2 and the like.

  If it is determined in step S22 that a predetermined time has elapsed ("Y" in step S22), the jig 3 is lifted from the ice surface S, and the water absorber 2 is separated from the ice surface S (step S23). ). On the other hand, when it is determined in step S22 that a predetermined time has not elapsed ("N" in step S22), the water absorber 2 is kept in contact with the ice surface S (that is, step S22). Will be implemented again). Thereby, in water absorption process S2, the water absorption body 2 can be made to contact the ice surface S for the predetermined time, and can be hold | maintained.

  Next, as shown in FIG. 4, the measurement method of the present embodiment examines the water absorption amount of the water absorbent body 2 (step S3). In step S3, each water absorbing body 2 is removed from the sticking surface 18 of the water absorbing body holding means 12. And in process S3, the amount of water absorption is investigated based on the magnitude | size of the discoloration part 8 (shown in FIG.3 (b)) of each water absorption body 2. FIG. In the present embodiment, as shown in FIG. 3B, the size of the discolored portion 8 is measured based on the scale 7 provided on the water absorbent body 2. Thereby, in process S3, the moisture content on the ice surface S can be measured correctly.

  In step S3 of this embodiment, the water content of each water absorbing body 2 in contact with different positions on the ice surface S is measured by the plurality of water absorbing bodies 2, respectively. And in this embodiment, the average value of the moisture content of each water absorption body 2 is calculated. Thereby, in process S3, since the water content which is easy to vary on ice surface S can be leveled, the water content of ice surface S can be measured more correctly.

  Thus, the measuring method (measuring device 1) of the present embodiment can easily measure the amount of water on the ice surface S. Moreover, the measurement method of the present embodiment can measure the amount of water on the ice surface S in advance, for example, for the ice surface S used in tests and competitions performed on ice. It is also useful for evaluating the experimental results in consideration of the amount of water on the ice surface S.

  Further, in the present embodiment, since the plurality of water absorbing bodies 2 are simultaneously in contact with the ice surface S, by averaging the water amounts at a plurality of locations on the ice surface S, the variation in the water amount on the ice surface S is averaged. I can do it. Therefore, the measurement method (measurement apparatus 1) of the present embodiment can measure the water content of the ice surface S more accurately.

  As shown to Fig.3 (a), although the water absorbing body 2 of this embodiment illustrated what has fixed width W1 in the longitudinal direction of the water absorbing body 2, it is not limited to such an aspect. FIG. 6 is a perspective view showing a water absorbent body 2 according to another embodiment of the present invention. The width W1 of the water absorbing body 2 of this embodiment is gradually reduced toward one end (that is, the portion that is in contact with the ice surface S (shown in FIG. 2) of the water absorbing body 2) 2s. One end 2s of the water absorbent body 2 of the present embodiment protrudes in an acute angle shape. Such a water absorbent body 2 can reduce the volume of the water absorbent material 5 on the one end 2s side, and therefore absorbs water early toward the other end 2t side of the water absorbent body 2 even if the amount of water on the ice surface S is small. be able to. Thereby, since the water absorption body 2 can enlarge the discoloration part 8 (FIG.3 (b)) in the longitudinal direction of the water absorption body 2, it can investigate water absorption amount easily.

  In the longitudinal direction of the water absorbent body 2, the length L4 of the portion (hereinafter simply referred to as “gradually decreased portion”) 54 where the width W1 of the water absorbent body 2 gradually decreases can be set as appropriate. If the length L4 of the gradual decrease portion 54 is small, the discolored portion 8 (shown in FIG. 3B) may not be sufficiently large in the longitudinal direction of the water absorbent body 2. Conversely, even if the length L4 of the gradual decrease portion 54 is large, when the amount of water on the ice surface S is large, the water absorption body 2 may be discolored to the other end 2t, and the amount of water absorption may not be accurately checked. is there. From such a viewpoint, the length L4 of the gradually decreasing portion 54 is desirably 1/10 or more of the length L1 of the water absorbent body 2, and desirably 1/2 or less.

  In the measurement method of the present embodiment, the amount of water absorption is examined based on the size of the discolored portion 8 (shown in FIG. 3B) of the water absorbent body 2, but the present invention is not limited to such a mode. For example, in step S3, the amount of water absorption may be examined based on a change in the mass of the water absorbent body 2. In this case, in step S3, the amount of water absorption is examined by subtracting the mass of the water absorbent body 2 before water absorption from the mass of the water absorbent body 2 after water absorption. Thereby, the measuring method of this embodiment is more accurate than the previous embodiment in which the water absorbing body 2 is examined based on the size of the discolored portion 8 (shown in FIG. 3B). Can be measured. And since it is not necessary to add dye to the water absorbing body 2, the cost of the water absorbing body 2 can be reduced.

  FIG. 7 is a perspective view showing a jig 3 according to another embodiment of the present invention. In addition, in this embodiment, about the same structure as previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  The jig 3 of this embodiment is provided with a clock unit 10. Thereby, in the water absorption step S2 shown in FIG. 5, the time for which the water absorbing body 2 is brought into contact with the ice surface S can be easily measured using the clock unit 10. The clock unit 10 is preferably provided with a sensor (not shown) or the like that can start time measurement at the same time that the lower surface 16d of the mounting unit 16 is disposed on the ice surface S.

  FIG. 8 is a perspective view showing a jig 3 according to another embodiment of the present invention. The jig 3 of this embodiment is provided with a moving means 13 for moving the water absorbent body holding means 12. In addition, in this embodiment, about the structure same as the previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  The water-absorbing body holding means 12 of this embodiment includes a main portion 21 including an arm 24 and a rising portion 25 extending upward from one end of the arm 24 in the longitudinal direction, and is formed in an L shape. Further, the main portion 21 is provided with a reinforcing portion 26 that connects between the arm 24 and the rising portion 25.

  In this embodiment, the arm 24 is disposed away from the support column 17 of the base 11. The rising portion 25 extends upward from one end of the arm 24. The rising portion 25 is formed in a rectangular plate shape when viewed from the front. In the rising portion 25, one end of the arm 24 is fixed to the lower end side of the first side surface 25a facing the arm 24 side.

  The reinforcing portion 26 is fixed to the upper surface of the arm 24 and the first side surface 25a of the rising portion 25, and is formed in a substantially triangular plate shape. Such a reinforcing portion 26 can firmly connect the arm 24 and the rising portion 25, so that the durability of the main portion 21 can be improved.

  The moving means 13 of this embodiment includes a guide rail 43, a moving part 44 that is movably fitted to the guide rail 43, and a driving means 45 that moves the moving part 44 along the guide rail 43.

  The guide rail 43 is fixed to the first side surface 17 a facing the arm 24 side of the support column 17, and extends in the longitudinal direction of the support column 17. The moving part 44 is fixed to the rising part 25 of the water absorbent body holding means 12. In this embodiment, a pair of moving parts 44 and 44 are being fixed to the 2nd side 25b which faces the support | pillar 17 side of the standing part 25. As shown in FIG. The pair of moving parts 44, 44 are arranged apart from each other in the longitudinal direction of the rising part 25.

  The drive means 45 includes a cylinder 47, a rod 48, and an electric motor (not shown). The end of the cylinder 47 is fixed via a bracket 50 on the upper end side of the first side surface 17 a of the support column 17. The end portion of the rod 48 is fixed to the upper end side of the reinforcing portion 26 of the water absorbent body holding means 12.

  The moving means 13 extends the rod 48 of the driving means 45 downward, thereby moving the water absorbing body holding means 12 downward via the moving portion 44 guided by the guide rail 43 (that is, the water absorbing body). 2 can be moved to the ice surface S side). The water absorbing body 2 can be brought into contact with the ice surface S by the downward movement of the water absorbing body holding means 12. Further, the moving means 13 moves the water absorbing body holding means 12 upward via the moving portion 44 guided along the guide rail 43 by contraction of the rod 48 of the driving means 45 (that is, the water absorbing body 2). Can be separated from the ice surface S).

  FIG. 9 is a flowchart showing an example of a processing procedure of a measuring method using the measuring apparatus 1 of this embodiment. In addition, in this embodiment, about the structure same as the previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  In the measurement method of this embodiment, the jig 3 is placed on the ice surface S prior to the step S1 of fixing the water absorbing body 2 to the jig 3 (step S4). In step S4, the placement portion 16 of the base 11 is disposed on the ice surface S as shown in FIG. Thereby, the jig | tool 3 can be installed on the ice surface S. FIG. In step S4, the rod 48 of the driving means 45 is contracted to move the water absorbent body holding means 12 upward.

  In step S4, in order to stably install the jig 3 on the ice surface S, it is desirable that piles (not shown) are driven into the respective hole portions 19 provided at the four corners of the mounting portion 16. The step S4 of this embodiment is performed before the step S1, but may be performed after the step S1.

  In the water absorption step S2 shown in FIG. 5, in the step S21 of bringing the water absorbent body 2 into contact with the ice surface S, the rod 48 of the driving means 45 is extended downward as shown in FIG. Thereby, the water absorption body 2 can be made to contact the ice surface S in process S21. By the contact with the ice surface S, the water absorbing body 2 can absorb the moisture on the ice surface S. Further, in the step S23 in which the water absorbing body 2 is separated from the ice surface S, the rod 48 of the driving means 45 is contracted.

  Thus, in the measurement method of this embodiment, the water absorbing body 2 can be brought into contact with and separated from the ice surface S in a state where the jig 3 (mounting portion 16) is installed on the ice surface S. Thereby, the measuring method of this embodiment can make the water absorption body 2 absorb water on the ice surface S stably.

  FIG. 10 is a perspective view showing an example of the jig 3 according to another embodiment of the present invention. FIG. 11 is a front view of FIG. The jig 3 of this embodiment is further provided with a control means 14 for controlling the drive means 45 and the like. In addition, in this embodiment, about the structure same as the previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  As shown in FIG. 1, the control unit 14 displays, for example, a working memory, a CPU (Central Processing Unit) that executes various arithmetic processes and information processing, a storage device such as a magnetic disk, a processing result, and the like. A display unit 51 for operation, and an operation unit 52 for an operator to operate. The control means 14 has a timer (not shown) that can measure time.

  In the jig 3 of this embodiment, a displacement meter 27 is provided on the lower surface of the arm 24. The displacement meter 27 of this embodiment is configured as a laser displacement meter. Such a displacement meter 27 can measure the distance from the displacement meter 27 to the ice surface S at an arbitrary timing. This measurement data is transferred to the control means 14. The displacement meter 27 is controlled by the control means 14.

  The control means 14 of such an embodiment can expand and contract the rod 48 of the drive means 45 based on the distance from the displacement meter 27 to the ice surface S. Thereby, the control means 14 can make the one end 2s of the water absorption body 2 contact the ice surface S accurately. Moreover, since the control means 14 has a timer (not shown), it can measure the time for which the water absorbing body 2 is brought into contact with the ice surface S.

  Next, a processing procedure of the measurement method of this embodiment will be described. In addition, in this embodiment, about the structure same as the previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  In the measurement method of this embodiment, in step S21 (shown in FIG. 5) in which the water absorbing body 2 is brought into contact with the ice surface S, a displacement meter is calculated from a distance M1 (shown in FIG. 10) from the displacement meter 27 to the ice surface S. Based on the distance obtained by subtracting the distance M2 (shown in FIG. 11) from 27 to one end 2s of the water absorbent body 2 (that is, the distance from one end 2s of the water absorbent body 2 to the ice surface S), Has been stretched. Thereby, in process S21, one end 2s of water absorber 2 can be made to contact ice surface S reliably.

  In step S22 (shown in FIG. 5) for determining whether or not a predetermined time has elapsed in this embodiment, the timer (not shown) of the control means 14 set at the same time that the water absorber 2 contacts the ice surface S. ). Further, in step S <b> 23 in which the water absorbing body 2 is separated from the ice surface S, the control unit 14 contracts the rod 48 of the driving unit 45.

  As described above, in the measurement method of this embodiment, since the water absorbing body 2 can be brought into contact with and separated from the ice surface S by the control means 14, the water absorbing body 2 can be reliably placed on the ice surface S in a predetermined time. It can be made to contact and absorb water. Thereby, in the measuring method of this embodiment, the measurement error of the water absorption amount of the water absorbing body 2 can be reduced.

  In addition, the base 11 may be provided with a turntable 20 between the placement unit 16 and the support column 17 that can rotate the support column 17 about the vertical axis with respect to the placement unit 16. The turntable 20 includes a lower support portion 20 a fixed to the upper surface of the mounting portion 16 and an upper support portion 20 b fixed to the lower surface of the support column 17. The upper support portion 20b is supported by the lower support portion 20a so as to be rotatable about a vertical axis. By rotating the support column 17 around the vertical axis by such a rotating disk 20, the water absorbing body 2 held by the water absorbing body holding means 12 can be placed at any position on the ice surface S outside the mounting portion 16. Can be contacted. The turntable 20 may be manually rotated by a user or may be rotated by driving means (not shown) such as a motor.

  FIG. 12 is a perspective view showing a jig 3 according to another embodiment of the present invention. FIG. 13 is a partial perspective view of FIG. FIG. 14 is an exploded perspective view of FIG. The water-absorbing body holding means 12 of this embodiment includes an attachment portion 22 for stably fixing the water absorbing body 2 so as to be removable. In addition, in this embodiment, about the structure same as the previous embodiment, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

  The attachment part 22 includes a notch part 31, a holding part 32, and a holding piece 33.

  As shown in FIG. 14, the notch 31 is formed by notching the other end side of the arm 24 in the longitudinal direction into an L shape in plan view. The notch 31 extends along the longitudinal direction of the arm 24. The notch portion 31 includes a first side surface 31a on which the holding piece 33 is disposed. The first side surface 31a is provided with a fitting portion 34 into which the holding piece 33 can be fitted. The fitting part 34 of the present embodiment is formed in a T shape.

  The holding portion 32 is formed to have substantially the same size as the cutout portion 31 (that is, a region in which the other end of the arm 24 is cut out in an L shape). The holding portion 32 is provided with a first side surface 32 a that abuts against the first side surface 31 a of the notch portion 31. Further, one end of the holding portion 32 is fixed to the arm 24 via a fixing tool 35. The fixture 35 supports the holding portion 32 so as to be rotatable about a vertical axis. Thus, the holding portion 32 separates the first side surfaces 31a and 32a from the closed state (shown in FIG. 13) where the first side surface 31a of the notch portion 31 and the first side surface 32a of the holding portion 32 face each other. It can be rotated between the opened state (shown in FIG. 14).

  In the closed state shown in FIG. 13, the holding portion 32 is between the first side surface 31 a (shown in FIG. 14) of the notch portion 31 and the first side surface 32 a (shown in FIG. 14) of the holding portion 32. The holding piece 33 (shown in FIG. 3) can be sandwiched. Further, in the open state of the holding portion 32 shown in FIG. 14, the water absorbing body 2 can be easily detached from the attachment portion 22. As shown in FIG. 13, in order to stably maintain the closed state (in order to stably hold the water absorber 2), the other end of the arm 24 can be detached from the other end of the holding portion 32. It is desirable to provide a locking means 36 for fixing to.

  As shown in FIG. 14, the first side surface 32 a is provided with a groove portion 37 that prevents the water absorbing body 2 fixed to the holding piece 33 from being sandwiched between the first side surface 32 a of the notch portion 31. ing. Since such a groove portion 37 can prevent the water absorbing body 2 from being pressed between the notch portion 31 and the holding portion 32, water absorption of the water absorbing body 2 is not hindered.

  As shown in FIG. 14, the holding piece 33 includes a sticking portion 39 and a handle portion 40 and is formed in a T shape when viewed from the front. The holding piece 33 is detachably fitted into the fitting portion 34 of the first side surface 31 a of the notch portion 31.

  The affixing portion 39 is formed in a horizontally-long rectangular plate shape when viewed from the front. The sticking part 39 has a sticking surface 39 s extending along the first side face 31 a of the notch part 31. A part of the water absorbing body 2 is fixed to the pasting surface 39s.

  The other end 2t side of the water absorbent body 2 is fixed to the pasting surface 39s of the present embodiment. Thereby, as shown in FIG. 13, the water absorbing body holding means 12 is in a state in which the holding piece 33 is fitted in the fitting portion 34 (hereinafter, simply referred to as “fitted state of the holding piece 33”). , The one end 2 s side of the water absorbing body 2 can be protruded downward from the lower surface of the arm 24. Furthermore, the water absorbing body 2 is held so that the longitudinal direction of the water absorbing body 2 is substantially perpendicular to the ice surface S (shown in FIG. 12). Moreover, as FIG. 14 shows, the some water absorbing body 2 is affixed on the sticking surface 39s of this embodiment. Thereby, the jig | tool 3 can hold | maintain the some water absorbing body 2. FIG.

  The handle portion 40 extends upward from the longitudinal center of the sticking portion 39. As shown in FIGS. 12 and 14, the upper end side of the handle portion 40 protrudes upward from the upper surface of the arm 24 and is curved in the thickness direction of the arm 24. Since such a handle part 40 can be easily gripped by the user, the holding piece 33 can be smoothly attached and detached.

  According to the attachment part 22 of this embodiment, attachment and removal of the plurality of water absorbent bodies 2 are facilitated via the holding piece 33. Therefore, the jig 3 of this embodiment can efficiently measure the amount of water on the ice surface S.

  In the measurement method of this embodiment, in step S1 (shown in FIG. 9) for fixing the water absorbent body 2 to the jig 3, first, as shown in FIG. The other end 2t side of the body 2 is attached. Next, in step S <b> 1, the holding piece 33 is fitted into the fitting portion 34 of the notch portion 31 in the open state of the holding portion 32 (shown in FIG. 14). Next, in process S1, the holding part 32 is rotated and the 1st side surface 31a of the notch part 31 and the 1st side surface 32a of the holding part 32 are faced | matched (closed state shown in FIG. 13). . Thereby, the jig | tool 3 can hold | maintain the some water absorbing body 2 so that those longitudinal directions may become substantially perpendicular to the ice surface S, as FIG. 12 shows.

  In step S3 shown in FIG. 9, prior to examining the water absorption amount of the water absorbent body 2, the holding piece 33 is moved from the fitting portion 34 of the notch portion 31 in the open state of the holding portion 32 (shown in FIG. 14). Is removed. Thereby, in the measuring method of this embodiment, the some water absorbing body 2 can be removed from the jig | tool 3 easily and rapidly.

  FIG. 15 is a perspective view showing an example of the water-absorbing body holding means 12 according to another embodiment of the present invention. FIG. 16 is a perspective view showing the holding portion 32 in the open state. The water absorbing body holding means 12 of this embodiment is provided with a supporting means 56 that prevents the water absorbing body 2 from bending. The support means 56 includes a pair of support pieces 57a and 57b.

  As shown in FIG. 16, one support piece 57 a is fixed to the lower surface of the arm 24 where the notch 31 is provided. One support piece 57 a of this embodiment includes a pair of hanging pieces 61, 61, a first connection piece 62, and a second connection piece 63.

  The pair of hanging pieces 61, 61 are arranged on both sides of the fitting portion 34 in the longitudinal direction of the arm 24. Each drooping piece 61, 61 extends downward from the lower surface of the arm 24. The lower ends of the drooping pieces 61, 61 are disposed above the one end 2 s of the water absorbent body 2 when the holding piece 33 is fitted.

  The first connecting piece 62 connects the lower ends of the hanging pieces 61 and 61. Further, the first connecting piece 62 extends in parallel with the longitudinal direction of the arm 24. Thereby, the 1st connection piece 62 is arrange | positioned rather than the one end 2s of the water absorbing body 2. FIG. The second connecting piece 63 connects the pair of hanging pieces 61 and 61 above the first connecting piece 62. The second connecting piece 63 of this embodiment extends in parallel with the first connecting piece 62. The first connecting piece 62 and the second connecting piece 63 of this embodiment are formed in a circular cross section.

  The other support piece 57 b is fixed to the lower surface of the holding portion 32. The other support piece 57b of this embodiment includes a pair of hanging pieces 65, 65, a first connection piece 66, and a second connection piece 67, like the one support piece 57a.

  In the support means 56, when the holding portion 32 shown in FIG. 15 is closed, the distance between the pair of support pieces 57a and 57b is substantially the same as the thickness T1 of the water absorbent body 2 (shown in FIG. 3A). (About ± 0.2 mm of thickness T1). As a result, the support means 56 allows the water absorber 2 protruding downward from the lower surface of the arm 24 in the closed state of the holding portion 32 to the first connection piece 62 and the second connection piece 63 of the one support piece 57a. , And can be sandwiched between the first connecting piece 66 and the second connecting piece 67 of the other support piece 57b.

  Thus, since the support means 56 of this embodiment can pinch the water absorption body 2 over the wide range of the longitudinal direction of the water absorption body 2, it prevents the water absorption body 2 from bending in the thickness direction and is stable. Can be held. Since the 1st connection piece 62 and the 2nd connection piece 63 are formed in the cross-sectional circular shape, the compression to the water absorption body 2 can be suppressed to the minimum. Thereby, it can prevent that the water absorption of the water absorbing body 2 is inhibited. In addition, in order to hold | maintain the water absorption body 2 more stably, the 2nd connection pieces 63 and 67 may be provided with two or more.

  Further, the support means 56 of this embodiment can separate the one support piece 57a and the other support piece 57b in the open state of the holding portion 32 shown in FIG. 2 can be easily removed.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

In accordance with the procedure shown in FIGS. 4 and 5, the amount of water on the ice surface under the following different conditions (air temperature, humidity, and ice surface temperature) was measured using the measuring apparatus shown in FIG. Examples 1 to 3). The common specifications are as follows.
Example 1:
Air temperature: 1 ° C, humidity: 90%, ice surface temperature: -1 ° C
Example 2:
Air temperature: 1 ° C, humidity: 70%, ice surface temperature: -1 ° C
Example 3:
Air temperature: 1 ° C, humidity: 20%, ice surface temperature: -1 ° C
Absorber:
Water-absorbing material: Filter paper Dye: Blue No. 1 Width W1: 5 mm
Length L1: 50mm
Thickness T1: 0.3mm
Dye distance L3: 1.0 mm
Scale interval W2: 2.0 mm
jig:
Number of water absorbers: 4

  In Examples 1 to 3, 10 seconds after the water absorber was brought into contact with the ice surface, the water absorber was separated from the ice surface, and the water absorption amount of the water absorber was examined. And in Examples 1-3, the average of the water absorption amount of each water absorbing body was calculated | required, and the water content on the ice surface was measured. Fig.17 (a) is a graph which shows the relationship between the magnitude | size of the part which the water absorption body of Examples 1-3 discolored, and humidity.

  In general, the moisture content on the ice surface increases as the humidity increases under the same temperature and ice surface conditions. As shown in FIG. 17A, in Examples 1 to 3, as the humidity increased (that is, the amount of water on the ice surface increased), the portion of the water absorbent discolored increased. And the magnitude | size of the part which the water absorbing body discolored and humidity have a proportional relationship. Therefore, in the examples, the amount of water on the ice surface could be easily measured by examining the amount of water absorbed by the water absorbing body (that is, the size of the portion where the water absorbing body was discolored).

  In addition, a plurality of flat dishes having different water film thicknesses were prepared, and the moisture content was measured using the measuring apparatus shown in FIG. 1 under conditions of an air temperature of 1 ° C. and a humidity of 20% (experimental example). . FIG. 17B is a graph showing the relationship between the size of the portion where the water absorbing body of the experimental example has changed color and the thickness of the water film. As shown in FIG. 17 (b), in the experimental example, as the thickness of the water film increased, the portion where the water absorbent body was discolored increased. Therefore, it was confirmed that the example and the experimental example had a correlation. Also, based on such a graph, the ratio of the size of the water-absorbing body discolored to the thickness of the water film is obtained in advance, so that the water-absorbing body of the graph of FIG. The amount of water on the ice surface could be quantitatively determined from the size.

1 Water content measuring device on ice 2 Water absorption body 3 Jig S Ice surface

Claims (11)

A method for measuring the amount of water on the ice surface,
A water absorbing step of holding a water absorbing body made of a water absorbing material in contact with the ice surface for a predetermined time; and
A method for measuring the amount of water on the ice surface, comprising the step of separating the water absorber from the ice surface when the time has elapsed and examining the water absorption amount of the water absorber. The water absorber is discolored by water absorption,
The method for measuring the amount of water on the ice surface according to claim 1, wherein the step of examining the amount of water absorption is performed based on a size of a portion where the water absorber has changed color.   The method for measuring the amount of water on the ice surface according to claim 1, wherein the step of examining the amount of water absorption is performed based on a change in mass of the water absorber. The water absorbing body is a long body,
The method for measuring the amount of water on the ice surface according to any one of claims 1 to 3, wherein the water absorption step is performed using a jig that holds the water absorber so that the longitudinal direction of the water absorber is substantially perpendicular to the ice surface. .   5. The method for measuring the amount of water on an ice surface according to claim 1, wherein the water absorption step causes a plurality of the water absorbers to simultaneously contact the ice surface. A device for measuring the amount of water on the ice surface,
A water absorbent body made of a water absorbent material;
An apparatus for measuring a moisture content on ice, comprising a jig for bringing the water absorbent into contact with the ice surface.   The water content measuring device on ice according to claim 6, wherein the water absorbing body is discolored by water absorption.   The moisture measuring device on ice according to claim 7, wherein the water absorbent has a scale for measuring the size of the discolored portion. The water absorbing body is a long body,
The moisture measuring device on ice according to any one of claims 6 to 8, wherein the jig holds the water absorbing body so that a longitudinal direction thereof is substantially perpendicular to the ice surface.   The moisture measuring device on ice according to claim 6, wherein the jig holds a plurality of the water absorbing bodies.   The water content measuring device on ice according to any one of claims 6 to 10, wherein the width of the water absorbent gradually decreases toward a portion of the water absorbent that is brought into contact with the ice surface.

Images