JP4393213B2 - Hose compression stiffness measuring device - Google Patents

Description

  The present invention relates to a device for measuring the compression stiffness of a hose that measures the compression stiffness in the radial direction of various hoses such as a hose for an air conditioner, a brake hose, a water hose, and the like.

  Generally, hoses used in vehicle air conditioners and the like are required to have a predetermined strength against shrinkage (collapse) in the radial direction of the hose due to negative pressure. It is necessary to measure the rigidity.

  In order to perform such measurement, conventionally, both ends of a hose cut into a short length are fixed, and the amount of contraction is measured by making the inside of the hose in a vacuum state. In this method, the entire hose is in a vacuum state. Therefore, it is not possible to inspect partial lack of rigidity.

Therefore, a measuring device is known in which the compression stiffness at an arbitrary position in the axial direction of the hose is measured by pressing an indenter applied with a predetermined pressure on the surface of the hose and detecting the indentation amount of the indenter. (For example, refer to Patent Document 1).
JP 2003-337093 A

  However, the measuring device can measure the partial rigidity of the hose, but since the actual product has a length of several hundred meters, the radial rigidity of the hose is continuously increased in the axial direction of the hose. It is impossible to measure. For this reason, there is a problem in that a partial lack of rigidity of the hose cannot be inspected over the entire length of the hose, and quality assurance cannot be sufficiently performed.

  The present invention has been made in view of the above problems, and an object thereof is to provide a compression stiffness measuring device for a hose capable of measuring the compression stiffness in the radial direction of the hose over the entire length of the hose. There is.

In order to achieve the above object, the present invention is a hose compression stiffness measuring device for measuring the compression stiffness in the radial direction of the hose. A pair of rollers that can be freely provided and can be held at a predetermined interval smaller than the outer diameter of the hose, and a hose disposed between the rollers in the axial direction while each roller is held at the predetermined interval. While applying the reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller, and applying a predetermined pressure on the hose side in a state where the roller is movable in the radial direction of the hose, and continuously measurable compressive outer-diameter measuring means hoses disposed between the rollers the spacing between the rollers while moving in the axial direction as the compression outer diameter of the hose, the axial direction of the hose Speed detecting means for detecting the moving speed, outer diameter detecting means for detecting the outer diameter of the hose when not compressed, hose speed detected by the speed detecting means and outer diameter of the hose detected by the outer diameter detecting means And a correcting means for correcting the measurement value of the reaction force measuring means .

As a result, the reaction force or compression outer diameter in the radial direction of the hose is measured while moving the hose in the axial direction, so that the radial compression rigidity is determined based on the reaction force or compression outer diameter of the hose in the axial direction of the hose. It is possible to measure continuously. In this case, the moving speed of the hose is detected by the speed detecting means, and the outer diameter of the hose at the time of non-compression is detected by the outer diameter detecting means, and based on the detected values of the outer diameter detecting means and the speed detecting means, Since the measurement value of the reaction force is corrected, a measurement error due to a change in the moving speed or the outer diameter of the hose is reduced.

In order to achieve the above object, the present invention provides a hose compression stiffness measuring device for measuring the compression stiffness with respect to the radial direction of the hose. A pair of rollers that are movably provided and can be held at a predetermined interval smaller than the outer diameter of the hose, and a hose disposed between the rollers with the rollers held at the predetermined interval in the axial direction The reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller while being moved to the roller, and a predetermined pressure is applied to the hose side in a state where the roller is movable in the radial direction of the hose. And a compression outer diameter measuring means capable of continuously measuring the distance between the rollers as the compression outer diameter of the hose while moving the hose disposed between the rollers in the axial direction, and the shaft of the hose. Speed detecting means for detecting the moving speed in the direction, outer diameter detecting means for detecting the outer diameter of the hose when it is not compressed, hose speed detected by the speed detecting means and hose speed detected by the outer diameter detecting means Correction means for correcting the measurement value of the compressed outer diameter measuring means according to the outer diameter.

As a result, the reaction force or compression outer diameter in the radial direction of the hose is measured while moving the hose in the axial direction, so that the radial compression rigidity is determined based on the reaction force or compression outer diameter of the hose in the axial direction of the hose. It is possible to measure continuously. In this case, the moving speed of the hose is detected by the speed detecting means, and the outer diameter of the hose at the time of non-compression is detected by the outer diameter detecting means, and based on the detected values of the outer diameter detecting means and the speed detecting means, Since the measured value of the compressed outer diameter is corrected, measurement errors due to fluctuations in the moving speed of the hose or the outer diameter are reduced.

In order to achieve the above object, the present invention provides a hose compression stiffness measuring device for measuring the compression stiffness with respect to the radial direction of the hose. A pair of rollers that are movably provided and can be held at a predetermined interval smaller than the outer diameter of the hose, and a hose disposed between the rollers with the rollers held at the predetermined interval in the axial direction The reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller while being moved to the roller, and a predetermined pressure is applied to the hose side in a state where the roller is movable in the radial direction of the hose. And a compression outer diameter measuring means capable of continuously measuring the distance between the rollers as the compression outer diameter of the hose while moving the hose disposed between the rollers in the axial direction, and the shaft of the hose. Speed detecting means for detecting the moving speed in the direction, outer diameter detecting means for detecting the outer diameter of the hose when it is not compressed, hose speed detected by the speed detecting means and hose speed detected by the outer diameter detecting means Correction means for correcting the measurement value of the reaction force measurement means according to the outer diameter, and compression outer diameter measurement means according to the hose speed detected by the speed detection means and the outer diameter of the hose detected by the outer diameter detection means Correction means for correcting the measured value.

As a result, the reaction force or compression outer diameter in the radial direction of the hose is measured while moving the hose in the axial direction, so that the radial compression rigidity is determined based on the reaction force or compression outer diameter of the hose in the axial direction of the hose. It is possible to measure continuously. In this case, the moving speed of the hose is detected by the speed detecting means, and the outer diameter of the hose at the time of non-compression is detected by the outer diameter detecting means, and based on the detected values of the outer diameter detecting means and the speed detecting means, Since the measurement values of the reaction force and the compressed outer diameter are corrected, measurement errors due to fluctuations in the moving speed of the hose or the outer diameter are reduced.

According to the present invention, the compression rigidity in the radial direction of the hose can be continuously measured in the axial direction of the hose, so that the lack of rigidity of the hose can be easily inspected over the entire length of the hose. Therefore, the quality assurance of the hose can be sufficiently performed, and a product with high quality can always be provided. In addition, since measurement errors associated with fluctuations in the hose moving speed or outer diameter can be reduced, measurement accuracy can be improved.

  1 to 9 show an embodiment of the present invention. FIG. 1 is a schematic side view of a compression stiffness measuring device, FIG. 2 is a radial sectional view of a hose, and FIG. 3 is a schematic configuration diagram of the compression stiffness measuring device. 4 is a front view of the first measuring instrument in the first measuring method, FIG. 5 is a front view of the second measuring instrument, FIG. 6 is a front view of the third measuring instrument, and FIG. 7 is the second measuring instrument. FIG. 8 is a schematic explanatory diagram of the first measuring method, and FIG. 9 is a schematic explanatory diagram of the second measuring method.

  This compressive stiffness measuring device includes first to third measuring devices 1, 2, and 3 that measure the compressive stiffness in the radial direction of the hose A, respectively, and the measuring devices 1, 2, and 3 measure the radial stiffness of the hose A. A plurality of reaction force measuring devices 4 for measuring the force, a plurality of compression outer diameter measuring devices 5 for measuring the compression outer diameter of the hose A by the measuring devices 1, 2 and 3, and the hose A at the time of non-compression, respectively. An outer diameter detector 6 for detecting the outer diameter, a speed detector 7 for detecting the moving speed of the hose A, a reaction force measuring device 4 and an outer compression device based on the detected values of the outer diameter detector 6 and the speed detector 7 The corrector 8 corrects the measured value of the diameter measuring device 5 and the recorder 9 that records the measured values of the reaction force measuring device 4 and the compression outer diameter measuring device 5. The hose A is axially moved by a conveying device (not shown). It moves at a predetermined speed.

  Each measuring machine 1, 2, 3 includes a pair of rollers 10 facing each other in the radial direction of the hose A, an air cylinder 11 that moves each roller 10 in the radial direction of the hose A, and each roller 10 at a predetermined interval. It comprises a spacer 12 to be held, a load detector 13 for detecting a reaction force in the radial direction of the hose A applied to one roller 10, and a displacement meter 14 for detecting the compression outer diameter in the radial direction of the hose A.

  The rollers 10 are arranged with the hose A therebetween, and are rotatably supported by support members 10a and 10b, respectively.

  The air cylinder 11 has a known configuration having drive rods 11a at both ends in the axial direction, and a movable plate 11b for supporting each roller 10 is attached to each drive rod 11a. That is, the support member 10a of one roller 10 is fixed to one movable plate 11b via the load detector 13, and the support member 10b of the other roller 10 is directly fixed to the other movable plate 11b. The air cylinders 11 of the measuring instruments 1, 2, 3 are fixed to the base 11f via first to third fixing members 11c, 11d, 11e, respectively. In this case, as shown in FIG. 4, the first measuring instrument 1 is installed by the first fixing member 11c so that the opposing direction B1 -B1 of each roller 10 is in the vertical direction, and as shown in FIG. The measuring machine 2 is installed by the second fixing member 11d so that the facing direction B2 -B2 of each roller 10 forms an angle of 60 ° clockwise with respect to the facing direction B1 -B1 of the first measuring machine 1 in the drawing. As shown in FIG. 6, the third measuring device 3 has the third fixing member 11e so that the facing direction B3-B3 of each roller 10 is opposite to the facing direction B1-B1 of the first measuring device 1 in the figure. It is installed to make an angle of 60 ° clockwise.

  The spacer 12 is disposed between a pair of substrates 12a fixed to each movable plate 11b, and abuts against the opposing surface of each substrate 12a to restrict the movement of each movable plate 11b. The interval L is maintained. The spacers 12 are detachably attached to the respective substrates 12a. By removing the spacers 12, the rollers 10 can move in the radial direction of the hose A without being restricted by the interval L. .

  The load detector 13 is a known device that detects a load, such as a load cell, for example, and detects a compressive load between one movable plate 11b and the support member 10a of one roller 10 as a reaction force of the hose A. It has become.

  The displacement meter 14 is a well-known device that detects a distance from an object by irradiation light such as a laser, and is fixed to one substrate 12a and detects a distance from the detection plate 14a fixed to the other substrate 12a. It is like that.

  Each reaction force measuring device 4 includes a known arithmetic device that measures the reaction force of the hose A based on the detection value of the load detector 13, and is connected to the recorder 9.

  Each compression outer diameter measuring device 5 includes a known arithmetic device that measures the compression outer diameter of the hose A based on the detection value of the displacement meter 14, and is connected to the recorder 9. In this case, the distance to the detection plate 14a detected by the displacement meter 14 is different from the interval between the rollers 10, but the difference is constant. Therefore, the detection value of the displacement meter 14 described below is the interval between the rollers 10. The value converted into (= compression outer diameter of hose A) shall be shown.

  The outer diameter detector 6 is a well-known device that detects the outer diameter of an object by irradiation light such as a laser, and detects the outer diameter of the hose A that moves to the first measuring instrument 1 side.

  The speed detector 7 is a well-known device that detects the moving speed of an object by the rotation of a roller 7a that contacts the moving object, such as a rotary encoder, and the moving speed of the hose A that moves to the outer diameter detector 6 side. It comes to detect.

  The corrector 8 is composed of a well-known arithmetic unit that calculates the correction value of the measured value of each reaction force measuring device 4 and each compressed outer diameter measuring device 5 based on the detected values of the outer diameter detector 6 and the speed detector 7. Each reaction force measuring device 4, each compression outer diameter measuring device 5 and the recorder 9 are connected.

  The recorder 9 includes a known recording device that continuously records the measured values of the reaction force measuring devices 4 or the compression outer diameter measuring devices 5 over the entire length of the hose A. For example, the recorder 9 is a predetermined chart paper (recording paper not shown). ) Or a measured value of reaction force or compression outer diameter is recorded as a continuous waveform on a personal computer, magnetic disk, memory card or the like.

  In the compression rigidity measuring apparatus configured as described above, as shown in FIG. 8, a first measuring method for measuring the reaction force in the radial direction of the hose A by fixing the interval between the rollers 10 to a predetermined interval L; As shown in FIG. 9, a second measuring method for measuring a compression outer diameter in the radial direction of the hose A by applying a predetermined pressure P to the hose A by each roller 10 can be arbitrarily selected. .

  That is, when the first measurement method is selected, the spacers 12 are arranged between the substrates 12a, and the intervals between the rollers 10 are held at a predetermined interval L smaller than the outer diameter d of the hose A. At this time, since the rollers 10 are pressurized in a direction approaching each other by the air cylinder 11, the interval between the rollers 10 does not increase.

  Next, when the measurement is performed by the first measuring method, the hose A is passed through the rollers 10 of the first to third measuring machines 1, 2, and 3 in order so as to sequentially pass in one axial direction at a predetermined speed. Move. At that time, since the interval L between the rollers 10 is smaller than the outer diameter d of the hose A, the hose A is compressed in the radial direction by each roller 10 and the reaction force is applied to one roller 10 by the load detector 13. The reaction force detection signal is input to the reaction force measuring device 4. The distance between the rollers 10 is also detected by the displacement meter 14 simultaneously with the detection of the reaction force. The detected value of the displacement meter 14 is used to check whether or not the distance between the rollers 10 is held at a predetermined distance L. It is done.

The reaction force measuring device 4 calculates a measured value for the reaction force of the hose A based on the following equation (1), and continuously outputs the measured value to the recorder 9 over the entire length of the hose A. ing. That is, the reaction force measurement value F is F1 as the detection value of the load detector 13 and H as the correction value.
Reaction force measurement value F = Reaction force detection value F1-Correction value Hf (1)
Is calculated by

Further, in each of the measuring instruments 1, 2, and 3, the moving speed of the hose A is detected by the speed detector 7, the outer diameter of the hose A is detected by the outer diameter detector 6, and these detection signals are corrected. 8 is input. In the corrector 8, a reference value for the moving speed of the hose A and a reference value for the outer diameter of the hose A are set, and a correction value Hf for the reaction force measurement value F is calculated based on the following equation (2). The correction value Hf is continuously output to the reaction force measuring device 4 over the entire length of the hose A. That is, the correction value Hf is represented by Ve as the deviation value of the detection value with respect to the speed reference value, and φe as the deviation of the detection value with respect to the outer diameter reference value.
Correction value Hf = Speed correction value H1 + Outer diameter correction value H2 (2)
Speed correction value H1 = Speed deviation value Ve x Coefficient C1 (3)
Outer diameter correction value H2 = Outer diameter deviation φe x Coefficient C2 (4)
Is calculated by The coefficients C1 and C2 are numerical values arbitrarily set so as to adapt to the reaction force measurement.

  For example, when the moving speed of the hose A is lower than the reference value, the reaction force decreases, so the speed correction value H1 becomes negative. From the equations (1) and (2), the speed correction value H1 becomes a positive value. It is added to the force detection value F1 and subtracted when the speed increases. Also, if the outer diameter of hose A is smaller than the reference value, the reaction force will decrease, so the outer diameter correction value H2 will be negative, and from equations (1) and (2), the outer diameter correction value H2 will be a positive value. It is added to the reaction force detection value F1, and is subtracted when the outer diameter is large. The correction values Hf, H1, H2 calculated by the corrector 8, the detected value of the speed detector 7 and the detected value of the outer diameter detector 6 are also output to the recorder 9.

  When the reaction force measurement value F calculated as described above is output to the recorder 9, the recorder 9 continuously records the reaction force measurement value F on the recording paper over the entire length of the hose A. Thereby, it is inspected over the entire length of the hose A whether there is a portion where the reaction force measurement value F is smaller than a predetermined reference value, that is, a portion where the compression rigidity in the radial direction of the hose A is insufficient. Can do.

  The reaction force of the hose A is measured for each of the first to third measuring machines 1, 2, and 3, and the respective measurement results are recorded by the recorder 9. Since the ten opposing directions are provided so as to be different from each other by 60 ° in the radial direction of the hose A, the reaction force of the hose A is measured at a plurality of locations different in the circumferential direction.

  When the second measurement method is selected in the compression stiffness measuring apparatus, the spacer 12 between the substrates 12a is removed as shown in FIG. 7, and a predetermined pressure P is applied to each roller 10 by the air cylinder 11. Give. At this time, each roller 10 is not subject to movement restriction by the spacer 12, and therefore can move in the radial direction of the hose A against the pressure P.

  Next, when the measurement is performed by the second measurement method, the hose A is sequentially passed between the rollers 10 of the first to third measuring machines 1, 2, and 3 as in the first measurement method. Is moved at a predetermined speed in one axial direction. At that time, since the pressure P by the air cylinder 11 is applied between the rollers 10, the hose A is compressed in the radial direction by the rollers 10, and the compression outer diameter is detected by the displacement meter 14. A compression outer diameter detection signal is input to the compression outer diameter measuring device 5. Further, the reaction force of the hose A is also detected by the load detector 13 simultaneously with the detection of the compression outer diameter. The detection value of the load detector 13 is whether or not a predetermined pressure P is applied between the rollers 10. Used for confirmation.

The compression outer diameter measuring device 5 calculates a measurement value for the compression outer diameter in the radial direction of the hose A based on the following formula (5), and continuously transmits the measurement value to the recorder 9 over the entire length of the hose A. It is designed to output. That is, the compression outer diameter measurement value D is calculated by assuming that the detection value of the displacement meter 14 is D1 and the correction value is Hd.
Compressed outer diameter measured value D = Compressed outer diameter detected value D1−correction value Hd (5)
Is calculated by

Further, in each of the measuring instruments 1, 2, and 3, the moving speed of the hose A is detected by the speed detector 7 and the outer diameter of the hose A is detected by the outer diameter detector 6 as in the first measuring method. These detection signals are input to the corrector 8. In the corrector 8, a reference value for the moving speed of the hose A and a reference value for the compression outer diameter of the hose A are set, and a correction value Hd for the compression outer diameter measurement value D based on the following equation (6). The correction value Hd is continuously output to the compression outer diameter measuring instrument 5 over the entire length of the hose A. That is, the correction value Hd is represented by Ve as the deviation value of the detection value with respect to the speed reference value, and φe as the deviation of the detection value with respect to the outer diameter reference value.
Correction value Hd = Speed correction value H1 + Outer diameter correction value H2 (6)
Speed correction value H1 = Speed deviation value Ve x Coefficient C3 (7)
Outer diameter correction value H2 = Outer diameter deviation φe x Coefficient C4 (8)
Is calculated by The coefficients C3 and C4 are numerical values arbitrarily set so as to adapt to the measurement of the compression outer diameter.

  For example, when the moving speed of the hose A is lower than the reference value, the compression outer diameter becomes smaller, so the speed correction value H1 becomes negative. From the equations (5) and (6), the speed correction value H1 is a positive value. It is added to the compressed outer diameter detection value D1, and is subtracted when the speed increases. Also, if the outer diameter of hose A is smaller than the reference value, the compressed outer diameter will be smaller, so the outer diameter correction value H2 will be negative, and the outer diameter correction value H2 will be a positive value according to equations (5) and (6). Is added to the compressed outer diameter detection value D1, and when the outer diameter is large, it is subtracted. The correction values Hd, H1, H2 calculated by the corrector 8, the detected value of the speed detector 7 and the detected value of the outer diameter detector 6 are also output to the recorder 9.

  When the compressed outer diameter measurement value D calculated as described above is output to the recorder 9, the recorder 9 continuously records the compressed outer diameter measurement value D on the recording paper over the entire length of the hose A. Thereby, it is inspected over the entire length of the hose A whether or not there is a portion where the compression outer diameter measurement value D is smaller than a predetermined reference value, that is, a portion where the compression rigidity in the radial direction of the hose A is insufficient. be able to.

  Further, as in the first measuring method, the compression outer diameter of the hose A is measured for each of the first to third measuring machines 1, 2, and 3, and the respective measurement results are recorded by the recorder 9. Since the machines 1, 2 and 3 are provided such that the opposing directions of the rollers 10 are different from each other by 60 ° in the radial direction of the hose A, the compression outer diameter of the hose A is measured at a plurality of locations different in the circumferential direction. .

  Thus, according to this embodiment, since the reaction force or the compression outer diameter of the hose A is measured while moving the hose A in the axial direction, the reaction force or the compression outer diameter of the hose A is measured. Based on this, the radial compression rigidity can be continuously measured in the axial direction of the hose A, and the lack of rigidity of the hose A can be easily inspected over the entire length of the hose A. Therefore, the quality assurance of the hose A can be sufficiently performed, and a product with high quality can always be provided.

  Further, the first measuring method for measuring the reaction force in the radial direction of the hose A with the interval between the rollers 10 fixed to the predetermined interval D1, and the hose A by applying a predetermined pressure to the hose A by each roller 10. Since the compression rigidity of the hose A can be measured by any one of the second measurement methods for measuring the compression outer diameter in the radial direction, any of these measurement methods can be selected according to the specifications and characteristics of the hose A. The versatility can be improved.

  In this case, a spacer 12 is provided to hold each roller 10 at a predetermined interval L by restricting movement of each roller 10 in a direction approaching each other at a predetermined position, and the spacer 12 is detachably provided between the substrates 12a. Therefore, the first and second measurement methods can be easily switched by attaching and detaching the spacer 12.

  Further, the reaction force in the radial direction of the hose A or the compression outer diameter is measured by the first to third measuring machines 1, 2, and 3, respectively, and the measuring machines 1, 2, and 3 are mutually connected in the axial direction of the hose A. Since the opposing directions of the rollers 10 in the measuring machines 1, 2, and 3 are different from each other by 60 ° in the circumferential direction of the hose A, a plurality of reaction forces or compression outer diameters of the hose A are different in the circumferential direction. The compression rigidity of the hose A can be measured not only in the axial direction of the hose A but also in the circumferential direction. Thereby, the reliability with respect to quality assurance of the hose A can be further increased.

  The moving speed of the hose A is detected by the speed detector 7, and the outer diameter of the hose A at the time of non-compression is detected by the outer diameter detector 6, and the detected values of the outer diameter detector 6 and the speed detector 7 are detected. Since the measurement value of the reaction force or the compressed outer diameter of the hose A is corrected based on this, the measurement error due to the movement speed or the outer diameter of the hose A can be reduced, and the measurement accuracy can be improved. Can do.

1 is a schematic side view of a compression stiffness measuring device showing an embodiment of the present invention. Radial cross section of hose Schematic configuration diagram of compression stiffness measuring device Front view of the first measuring machine in the first measuring method Front view of the second measuring machine Front view of the third measuring machine Front view of the first measuring machine in the second measuring method Schematic explanatory diagram of the first measurement method Schematic explanatory diagram of the second measurement method

DESCRIPTION OF SYMBOLS 1 ... 1st measuring machine, 2 ... 2nd measuring machine, 3 ... 3rd measuring machine, 4 ... Reaction force measuring device,
DESCRIPTION OF SYMBOLS 5 ... Compression outer diameter measuring device, 6 ... Outer diameter detector, 7 ... Speed detector, 8 ... Compensator, 9 ... Recorder, 10 ... Roller, 11 ... Air cylinder, 12 ... Spacer, 13 ... Load cell, 14 ... Displacement Total, A ... hose.

Claims (6)

In the compression stiffness measuring device for the hose that measures the compression stiffness with respect to the radial direction of the hose,
A pair of rollers arranged opposite to the radial direction of the hose, at least one of which is provided movably in the radial direction of the hose, and capable of being held at a predetermined interval smaller than the outer diameter of the hose;
A reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller while moving the hose disposed between the rollers in the axial direction with each roller held at the predetermined interval;
While the roller is movable in the hose radial direction, a predetermined pressure is applied to the hose side, and the hose disposed between the rollers is moved in the axial direction while the interval between the rollers is set to the compression outer diameter of the hose. A compression outer diameter measuring means capable of continuously measuring ,
Speed detecting means for detecting the moving speed of the hose in the axial direction;
An outer diameter detecting means for detecting the outer diameter of the hose when not compressed,
Compensation means for correcting the measured value of the reaction force measurement means in accordance with the hose speed detected by the speed detection means and the outer diameter of the hose detected by the outer diameter detection means Stiffness measuring device. In the compression stiffness measuring device for the hose that measures the compression stiffness with respect to the radial direction of the hose,
A pair of rollers arranged opposite to the radial direction of the hose, at least one of which is provided movably in the radial direction of the hose, and capable of being held at a predetermined interval smaller than the outer diameter of the hose;
A reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller while moving the hose disposed between the rollers in the axial direction with each roller held at the predetermined interval;
While the roller is movable in the hose radial direction, a predetermined pressure is applied to the hose side, and the hose disposed between the rollers is moved in the axial direction while the interval between the rollers is set to the compression outer diameter of the hose. A compression outer diameter measuring means capable of continuously measuring,
Speed detecting means for detecting the moving speed of the hose in the axial direction;
An outer diameter detecting means for detecting the outer diameter of the hose when not compressed,
Correction means for correcting the measurement value of the compression outer diameter measuring means according to the speed of the hose detected by the speed detecting means and the outer diameter of the hose detected by the outer diameter detecting means.
A device for measuring the compression stiffness of a hose. In the compression stiffness measuring device for the hose that measures the compression stiffness with respect to the radial direction of the hose,
A pair of rollers arranged opposite to the radial direction of the hose, at least one of which is provided movably in the radial direction of the hose, and capable of being held at a predetermined interval smaller than the outer diameter of the hose;
A reaction force measuring means capable of continuously measuring the reaction force in the radial direction of the hose applied to the roller while moving the hose disposed between the rollers in the axial direction with each roller held at the predetermined interval;
While the roller is movable in the hose radial direction, a predetermined pressure is applied to the hose side, and the hose disposed between the rollers is moved in the axial direction while the interval between the rollers is set to the compression outer diameter of the hose. A compression outer diameter measuring means capable of continuously measuring,
Speed detecting means for detecting the moving speed of the hose in the axial direction;
An outer diameter detecting means for detecting the outer diameter of the hose when not compressed,
Correction means for correcting the measurement value of the reaction force measurement means according to the speed of the hose detected by the speed detection means and the outer diameter of the hose detected by the outer diameter detection means;
Correction means for correcting the measurement value of the compression outer diameter measuring means according to the speed of the hose detected by the speed detecting means and the outer diameter of the hose detected by the outer diameter detecting means.
A device for measuring the compression stiffness of a hose. A detachable spacer that holds the rollers at the predetermined interval by restricting the movement of the rollers toward each other at a predetermined position;
By attaching spacers, the rollers are held at the predetermined intervals, and the reaction force in the radial direction of the hose applied to the rollers can be continuously measured while moving the hose disposed between the rollers in the axial direction.
By removing the spacer, the roller can be moved in the radial direction of the hose so that a predetermined pressure is applied to the hose side, and the hose disposed between the rollers is moved in the axial direction while the interval between the rollers is adjusted. The apparatus for measuring the compression stiffness of a hose according to claim 1 , wherein the measurement is continuously possible as a compression outer diameter. A plurality of the pair of rollers and reaction force detection means are provided in the axial direction of the hose, respectively.
The compression rigidity measurement of the hose according to claim 1, 2 , 3, or 4, wherein the rollers provided in the axial direction of the hose are arranged so that the opposing directions differ from each other by a predetermined angle in the circumferential direction of the hose. apparatus. A plurality of the pair of rollers and the compression outer diameter measuring means are respectively provided in the axial direction of the hose,
The compression rigidity measurement of the hose according to claim 1, 2 , 3, or 4, wherein the rollers provided in the axial direction of the hose are arranged so that the opposing directions differ from each other by a predetermined angle in the circumferential direction of the hose. apparatus.

Images