WO2011070977A1 - Moving belt mechanism for travelling test device, and endless belt - Google Patents

Moving belt mechanism for travelling test device, and endless belt Download PDF

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Publication number
WO2011070977A1
WO2011070977A1 PCT/JP2010/071685 JP2010071685W WO2011070977A1 WO 2011070977 A1 WO2011070977 A1 WO 2011070977A1 JP 2010071685 W JP2010071685 W JP 2010071685W WO 2011070977 A1 WO2011070977 A1 WO 2011070977A1
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WO
WIPO (PCT)
Prior art keywords
endless belt
inner peripheral
protective sheet
test apparatus
peripheral surface
Prior art date
Application number
PCT/JP2010/071685
Other languages
French (fr)
Japanese (ja)
Inventor
修一 鴇田
貴幸 宮本
嘉明 荒井
剛 荒井
Original Assignee
国際計測器株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国際計測器株式会社 filed Critical 国際計測器株式会社
Priority to CN201080055567.9A priority Critical patent/CN102648403B/en
Priority to KR1020127016589A priority patent/KR101409243B1/en
Publication of WO2011070977A1 publication Critical patent/WO2011070977A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/02—Wind tunnels
    • G01M9/04—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/02—Wind tunnels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
    • G01M17/0074—Details, e.g. roller construction, vehicle restraining devices

Definitions

  • the present invention relates to a moving belt mechanism and an endless belt used in a traveling test apparatus such as a wind tunnel test apparatus.
  • a running test apparatus having a moving belt mechanism as described in JP2007-101410A (Japan Patent Publication) is used.
  • a running test apparatus includes a moving belt mechanism in which a steel endless belt is wound around a pair of drums each including a driving drum and a driven drum.
  • the present invention is advantageous in that it provides a moving belt mechanism for an endless belt and an endless belt that are unlikely to undergo warping and other deformations in the endless belt and realize a long life of the endless belt. .
  • a moving belt mechanism for a running test apparatus includes a meandering correction roller that corrects meandering of an endless belt by being wound around an endless belt and tilting around an axis perpendicular to a rotation axis.
  • the inner peripheral surface of the belt is provided with an inner peripheral side protective sheet for protecting the inner peripheral surface over substantially the entire circumference.
  • the endless belt is formed by the distortion of the inner peripheral side protective sheet. It is characterized in that it has a bending rigidity to such an extent that it is not substantially deformed by a stress applied so as to warp.
  • the inventor has found that the scratches on the inner peripheral surface of the endless belt caused by the contact between the drum and the meandering correction roller and the endless belt are spread by the meandering correction roller, It was discovered that deformation occurred.
  • the inner periphery of the endless belt is protected by the inner peripheral side protection sheet, so that the inner peripheral surface of the endless belt is not damaged.
  • the endless belt since the endless belt has a bending rigidity such that the endless belt is not substantially deformed by the stress of the inner peripheral protective sheet, even if the inner peripheral protective sheet is deformed, the endless belt is not deformed such as warping. It does not occur.
  • the bending rigidity of the endless belt is 10 times or more than the bending rigidity of the inner peripheral protective sheet. More preferably, the bending rigidity of the endless belt is 100 times or more of the bending rigidity of the inner peripheral protective sheet.
  • the longitudinal elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more. More preferably, the longitudinal elastic modulus of the inner peripheral protective sheet is 0.1 [GPa] or more.
  • the transverse elastic modulus of the inner peripheral protective sheet is 0.01 [GPa] or more. More preferably, the lateral elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more.
  • the protective sheet having a longitudinal elastic modulus and a transverse elastic modulus having the above-described sizes has sufficiently high rigidity against a compressive load in the plate thickness direction and a shear load along the surface direction.
  • the inner peripheral protective sheet is sandwiched between the drum and the endless belt and receives a compressive load and a shear load in the above-described direction.
  • the inner peripheral protective sheet is substantially rigid with respect to the compressive and shear loads. Therefore, vibrations that affect the test performance of the running test apparatus due to the elasticity of the inner peripheral protective sheet do not occur in the endless belt.
  • the meandering correction roller may be an edge roller that is provided separately from the pair of drums and contacts the endless belt.
  • the edge roller is tilted by being driven so that one end of the edge roller moves upward and the other end moves downward.
  • the edge roller is inclined by being driven so that one end of the edge roller moves in the traveling direction of the specimen and the other end moves in the backward direction of the specimen.
  • edge roller may be in contact with the inner peripheral surface of the endless belt via an inner peripheral protective sheet.
  • the outer peripheral surface of the endless belt is provided with an outer peripheral protection sheet for protecting the outer peripheral surface over substantially the entire circumference
  • the edge roller is provided with an outer peripheral protective sheet on the outer peripheral surface of the endless belt.
  • the endless belt may be configured to have a bending rigidity that does not substantially deform due to stress applied to warp the endless belt due to distortion of the outer peripheral side protection sheet. In this case, it is good also as a structure by which an outer peripheral side protection sheet is affixed on the outer peripheral surface of an endless belt by adhesion
  • the meander correction roller is one of the pair of drums, and the meander correction roller is driven so that one end of the meander correction roller moves in the traveling direction of the test body and the other end moves in the backward direction of the test body. It is good also as a structure where a roller inclines.
  • the inner peripheral protective sheet may be attached to the inner peripheral surface of the endless belt, for example, by adhesion.
  • the steel endless belt according to the embodiment of the present invention is provided with an inner peripheral protection sheet for protecting the inner peripheral surface over substantially the entire inner periphery thereof, and further, The bending strength is such that the endless belt is not substantially deformed by stress applied to warp the endless belt due to distortion of the protective sheet.
  • FIG. 1 is a schematic side view of a wind tunnel testing apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a schematic enlarged side view of an endless belt and a protective sheet in the vicinity of the drive drum according to the first embodiment of the present invention.
  • FIG. 3 is a schematic external view showing the protective sheet before being attached to the endless belt in the first embodiment of the present invention.
  • FIG. 4 is a part of a schematic development view of an inner peripheral surface of an endless belt to which a protective sheet is attached according to the first embodiment of the present invention.
  • FIG. 5 is a schematic side view of a wind tunnel testing apparatus according to the second embodiment of the present invention.
  • FIG. 6 is a schematic side view of a wind tunnel testing apparatus according to the third embodiment of the present invention.
  • FIG. 1 is a schematic side view of a wind tunnel testing apparatus 1 according to the first embodiment of the present invention.
  • the wind tunnel test apparatus 1 includes a moving belt mechanism 10 that functions as a simulated road surface on which the automobile C is placed, a wind supply unit 20 that applies wind to the automobile C from the front (left side in the figure), and each part of the wind tunnel test apparatus 1. And a controller 30 for controlling the operation.
  • each direction is defined on the basis of the traveling direction of the automobile C on the assumption that the automobile C is arranged on the horizontal simulated road surface 14a so as to travel from the right side to the left side in FIG. That is, the left side in FIG. 1 is defined as the front side in the front-rear direction, the right side in FIG. 1 is defined as the rear side in the front-rear direction, the back side of the page is defined as the right side in the width direction, and the front side is defined as the left side in the width direction.
  • the moving belt mechanism 10 includes a driven drum 11 and a driving drum 12 arranged in the front-rear direction, and an edge roller 13 disposed between the driven drum 11 and the driving drum 12.
  • An endless belt 14 is wound around the driven drum 11, the drive drum 12 and the edge roller 13.
  • the driven drum 11 and the drive drum 12 are each arranged with the rotation axis in the width direction. Therefore, when the driving drum 12 is rotated in the clockwise direction in the drawing, the endless belt 14 is driven by the driven drum 11, the driving drum 12, and the edge roller 13 so that the upper portion 14a of the endless belt 14 moves from the front side in the front-rear direction. Rotate around. Then, due to the frictional force acting between the endless belt 14 and the driven drum 11 and the edge roller 13, the driven drum 11 and the edge roller 13 rotate in the clockwise direction in the figure as the endless belt 14 rotates. .
  • a servo motor 16 for rotating the drive drum 12 is attached to the drive drum 12.
  • the servo motor 16 is a motor capable of precisely controlling the number of rotations, and can drive the drive drum 12 at a desired rotation speed. That is, in the present embodiment, the endless belt 14 can be rotated at a desired peripheral speed.
  • the rotation and stop of the servo motor 16 and the rotation speed are controlled by the controller 30.
  • the wind supply unit 20 includes an air duct 21 and a blower fan 22.
  • the air inlet 21a of the air duct 21 is arranged on the rear side in the front-rear direction of the automobile C (right side in the figure), and the air outlet 21b is arranged on the front side in the front-rear direction of the automobile C (left side in the figure).
  • the blower fan 22 is disposed inside the air duct 21. By driving the blower fan 22, air is taken in from the air inlet 21 a of the air duct 21 and blown toward the automobile C from the air outlet 21 b. Is possible.
  • the blower fan 22 is driven by an inverter motor 23.
  • the inverter motor 23 is a motor capable of precisely controlling the rotation speed, and can precisely control the wind speed of the wind sent to the automobile C.
  • the rotation and stop of the inverter motor 23 and the number of rotations are controlled by the controller 30.
  • the endless belt 14 as a simulated road surface is rotated at a desired peripheral speed, and the vehicle C travels outdoors by sending wind at a desired wind speed from the front of the vehicle C.
  • the same environment as when the vehicle C is made is reproduced with the automobile C stationary.
  • the edge roller 13 is arranged with the rotation axis directed in the width direction. Further, the edge roller 13 is in contact with the inner peripheral surface 14 i at the lower portion 14 b of the endless belt 14 and applies a uniform tension to the endless belt 14.
  • An actuator 15b for moving at least one of the bearings 15a in the vertical direction is connected to the pair of bearings 15a that support the edge roller 13 at both ends in the width direction. By driving the actuator 15b, one of the bearings 15a is moved up and / or the other is moved down so that the edge roller 13 can be tilted in a plane perpendicular to the front-rear direction.
  • the actuator 15b is controlled by the controller 30.
  • the edge roller 13 is used to correct the meandering of the endless belt 14 in the width direction. If the edge roller 13 is tilted so that the left side in the width direction of the edge roller 13 is located above the right side in the width direction, the tension applied to the endless belt 14 is smaller on the left side in the width direction than on the right side in the width direction. As a result, a force toward the left side in the width direction is applied to the endless belt 14, and the endless belt 14 moves to the left side in the width direction. On the other hand, when the edge roller 13 is tilted so that the width direction left side of the edge roller 13 is positioned below the width direction right side, the tension applied to the endless belt 14 is greater in the width direction left side than in the width direction right side. growing.
  • the moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 15b is controlled to tilt the edge roller 13 in the direction in which the meandering is corrected.
  • the edge roller 13 is controlled to tilt around the axis in the front-rear direction (that is, in a plane perpendicular to the front-rear direction), but the present invention is not limited to the above configuration. Absent. That is, the edge roller 13 may be tilted around the vertical axis (that is, the actuator 15b moves at least one of the bearings 15a in the front-rear direction and tilts the edge roller 13 in a horizontal plane). In this case, since a large frictional force is generated in the axial direction of the inclined edge roller 13, the endless belt 14 is moved in the width direction by this frictional force.
  • the direction of the frictional force applied from the edge roller 13 to the endless belt 14 coincides with the front side in the front-rear direction.
  • the endless belt 14 receives a large frictional force generated in the axial direction of the edge roller 13. Moves to the right in the width direction.
  • the endless belt 14 moves to the left in the width direction.
  • a protective sheet 17 is attached to the inner peripheral surface 14i of the endless belt 14 in order to prevent the endless belt 14 from being deformed such as warping.
  • the configuration of the protective sheet 17 will be described below.
  • FIG. 2 is an enlarged side view of the endless belt 14 and the protective sheet 17 in the vicinity of the drive drum 12.
  • the protective sheet 17 is attached to the inner peripheral surface 14 i of the endless belt 14 over substantially the entire surface.
  • An adhesive layer 17 a is formed on one surface of the protective sheet 17, and the protective sheet 17 is bonded and fixed to the inner peripheral surface 14 i of the endless belt 14 by an adhesive contained in the adhesive layer 17 a.
  • the endless belt 14 is a steel strip of a martensitic stainless steel thickness t B of about 0.6 [mm]. Further, modulus of longitudinal elasticity of the endless belt 14 E B is about 230 GPa.
  • the protective sheet main body 17b of the protective sheet 17 of the endless belt 14 is formed from a resin material.
  • the thickness t S of the protective sheet body 17b is about 0.8 to 1.2 [mm].
  • the longitudinal elastic modulus E S of the protective sheet body 17b is about 0.1 ⁇ 0.2 [GPa]. Assuming that the distance between the axes of the driven drum 11 and the driving drum 12 is L, the bending rigidity B B and B S of the endless belt 14 and the protective sheet 17 with respect to the warp in the width direction are expressed by the equations (1) and (2), respectively. Indicated.
  • the ratio of the longitudinal elastic modulus of the endless belt 14 to the protective sheet 17 (E B / E S ) is about 1150 to 2300 and the ratio of thickness (t B / t S ) is about 0.5 to 0.75,
  • the ratio of the bending stiffness of the endless belt 14 to the protective sheet 17 (B B / B S ) is about 143 to 971.
  • the inner peripheral surface 14i of the endless belt 14 is protected by the protective sheet 17, and the driven drum 11, the drive drum 12, or the edge roller 13 and the endless belt 14 are not in direct contact with each other. There is no scratch on the inner peripheral surface 14i. Therefore, in the configuration of the present embodiment, the endless belt 14 is less likely to be warped or broken due to widening of scratches on the inner peripheral surface of the endless belt 14. As a result, the endless belt 14 has a long life.
  • the contact between the edge roller 13 and the protective sheet 17 causes a scratch in the direction along the feed direction of the endless belt 14 on the inner peripheral surface 17c of the protective sheet 17, and the edge roller 13 is
  • the damage of the protective sheet 17 is widened by the tilting operation, and the protective sheet 17 alone may be warped.
  • the bending rigidity B B of the endless belt 14 is sufficiently larger than the bending rigidity B S of the protective sheet 17, so that the endless belt 14 warps even if the scratches on the protective sheet 17 are widened. There is nothing.
  • a compressive load in the thickness direction of the protective sheet 17 is applied to a portion of the protective sheet 17 sandwiched between the driven drum 11 and the driving drum 12 and the endless belt 14. Further, a shearing load along the surface direction is applied to the protective sheet 17 by the friction force acting between the rotating drive drum 12 and the endless belt 14 and the protective sheet 17. Since the protective sheet 17 is an elastic body, the portion of the protective sheet 17 sandwiched between the drum and the endless belt 14 functions as a kind of spring. If the elastic coefficient of the protective sheet 17 is small, the amount of deformation of the protective sheet 17 sandwiched between the drum and the endless belt 14 increases, and a large vibration may occur in the rotating endless belt 14.
  • the protective sheet 17 can be regarded as a sufficiently rigid body against the compressive load and shear load applied to the protective sheet 17 (that is, the vibration of the endless belt 14 due to the deformation of the protective sheet 17 and the movement of the drive drum 12). It is desirable to have a longitudinal elastic modulus and a transverse elastic modulus of the endless belt 14 with respect to the delay coefficient.
  • the longitudinal elastic modulus E S is 0.1-0.2 of the protective sheet 17 as previously described [GPa], also shear modulus G S of the protective sheet 17 is 0.035 to 0.07 [GPa].
  • the sizes of E S and G S are large enough to allow the protective sheet 17 to be sufficiently rigid with respect to the compressive load and shear load applied to the protective sheet 17.
  • the ratio (B B / B S ) of the bending rigidity between the endless belt 14 and the protective sheet 17 is 143 to 971, but the present invention is not limited to the above configuration. That is, it is sufficient that the bending rigidity of the endless belt 14 is sufficiently larger than that of the protective sheet 17. Specifically, the ratio of the bending rigidity of the endless belt 14 to the protective sheet 17 may be 10 or more, and more preferably 100 or more.
  • the longitudinal elastic modulus E S is 0.1-0.2 of the protective sheet 17 [GPa], but modulus of transverse elasticity G S is 0.035 ⁇ 0.07 [GPa], the The invention is not limited to the above configuration.
  • the longitudinal elastic modulus and the transverse elastic modulus of the protective sheet 17 need only be large enough that the protective sheet 17 can be regarded as a rigid body with respect to the compressive load and shear load applied to the protective sheet 17.
  • the longitudinal elastic modulus of the protective sheet 17 may be 0.02 [GPa] or more, and more preferably 0.1 [GPa] or more.
  • the lateral elastic modulus of the protective sheet 17 should just be 0.01 [GPa] or more, More preferably, it is 0.02 [GPa] or more.
  • FIG. 3 shows the protective sheet 17 before being attached to the endless belt 14, and FIG. 4 is a part of a development view of the inner peripheral surface 14i of the endless belt 14 to which the protective sheet 17 is attached.
  • the protective sheet 17 before pasting the protective sheet 17 to the endless belt 14, the protective sheet 17, the dimension L S of the long side 17L is 1000 ⁇ 2000 [mm], and the (spacing between the long side) Width W S is cut slightly larger parallelogram shape than the width dimension W of the endless belt 14.
  • the angle ⁇ formed by the long side 17L and the short side 17S of the protective sheet 17 is about 45 °.
  • the inner peripheral surface of the endless belt 14 has a plurality of protective sheets 17 whose long sides are parallel to the edge 14e of the endless belt 14 and so that the protective sheet 17 protrudes from the edge 14e of the endless belt 14. 14i is pasted.
  • the protective sheet 17 is affixed so that air does not enter between the endless belt 14 while pressing the surface of the protective sheet 17 with a hand roller or the like.
  • the two adjacent protective sheets 17 are attached with a minute distance d in the circumferential direction of the endless belt 14 (left and right direction in the figure). In the present embodiment, the distance d is about 1 mm, that is, approximately the same as the thickness of the protective sheet 17.
  • the portion of the protective sheet 17 that protrudes from the edge 14e of the endless belt 14 is cut off with a cutter.
  • the surface of the protective sheet 17 is tapped with a hammer or the like, and the adhesive layer 17a (FIG. 2) of the protective sheet 17 is securely adhered to the endless belt.
  • the attachment of the protective sheet 17 to the endless belt 14 is completed.
  • the dimensions of the long side 17L of the protective sheet 17 and the number of protective sheets 17 to be attached to one endless belt 14 are appropriately selected according to the circumferential length of the endless belt 14.
  • the endless belt 14 in this embodiment is a martensitic stainless steel belt having a width of 500 mm, a circumferential length of 8500 mm, and a thickness of 0.6 mm.
  • the diameter of the driven drum 11 and the driving drum 12 is 550 mm, and the diameter of the edge roller 13 is 300 mm.
  • the protective sheet 17 has a thickness of about 1 mm, a longitudinal elastic modulus of 0.18 GPa, and a lateral elastic modulus of 0.06 GPa.
  • the endless belt 14 is wound around the driven drum 11, the drive drum 12, and the edge roller 13 so that the tension becomes 200 kN. Further, five parallelogram-shaped protective sheets 17 are stretched on the inner peripheral surface 14 i of the endless belt 14.
  • the moving belt mechanism 10 having the above configuration was driven so that the peripheral speed of the endless belt 14 was 55 [m / s]. Moreover, as a comparative example, a flat belt wound around the driven drum 11, the drive drum 12, and the edge roller 13 without attaching the protective sheet 17 to the endless belt 14 was driven at the same peripheral speed as in the example.
  • the wind tunnel test apparatus 1 corrects meandering of the endless belt 14 by tilting the edge roller 13.
  • the present invention is not limited to the above configuration.
  • meandering of the endless belt 14 is reduced by tilting the driven drum 11 instead of the edge roller 13.
  • FIG. 5 is a schematic side view of a wind tunnel testing apparatus 1 ′ according to the second embodiment of the present invention. Since the second embodiment is common to the configuration of the first embodiment described above except for the mechanism for reducing the meandering of the endless belt, the difference from the first embodiment is mainly described. explain. The same or corresponding elements as those in the first embodiment are denoted by the same or similar reference numerals, and detailed description thereof is omitted.
  • an actuator 18b for moving at least one of the bearings 18a in the front-rear direction is connected to a pair of bearings 18a that support the driven drum 11 at both ends in the width direction.
  • the actuator 18b is controlled by the controller 30.
  • the meandering of the endless belt 14 in the width direction can be corrected. That is, when the driven drum 11 is tilted so that the left end in the width direction of the driven drum 11 is located rearward with respect to the right end in the width direction, the tension applied to the endless belt 14 is smaller on the left side in the width direction than on the right side in the width direction. Become. As a result, the endless belt 14 is moved to the left side in the width direction by applying a force toward the left side in the width direction.
  • the endless belt 14 is moved to the right in the width direction by applying a force toward the right in the width direction.
  • the moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 18b is controlled so that the driven drum 11 is tilted in the direction in which the meandering is corrected.
  • the driven drum 11 is tilted to correct the meandering of the endless belt 14, but the driving drum 12 may be tilted to correct the meandering of the endless belt 14.
  • the endless belt 14 may be warped or broken by a mechanism for correcting the meandering of the endless belt 14. Therefore, also in this embodiment, the protective sheet 17 is affixed on the inner peripheral surface 14i of the endless belt 14 as in the first embodiment.
  • the edge roller 13 (first embodiment) and the driven drum 11 (second embodiment) for preventing the endless belt 14 from meandering are provided. It is in contact with the inner peripheral surface 14 i of the endless belt 14 via the protective sheet 17.
  • the present invention is not limited to the above configuration.
  • the edge roller contacts the outer peripheral surface of the endless belt 14.
  • FIG. 6 is a schematic side view of a wind tunnel test apparatus 1 ′′ according to a third embodiment of the present invention.
  • the wind tunnel test apparatus 1 ′′ is the above except for a mechanism for reducing the meandering of the endless belt. Since the configuration is the same as that of the first embodiment described above, differences from the first embodiment will be mainly described. The same or corresponding elements as those in the first embodiment are denoted by the same or similar reference numerals, and detailed description thereof is omitted.
  • the edge roller 13 ′ for correcting the meandering of the endless belt 14 abuts on the outer peripheral surface 14 o at the lower part 14 b of the endless belt 14 and applies a uniform tension to the endless belt 14.
  • the edge roller 13 ' is arranged with its axial direction facing the width direction.
  • An actuator 15b 'for moving at least one of the bearings 15a' in the vertical direction is connected to the pair of bearings 15a 'that support the edge roller 13' at both ends in the width direction.
  • the edge roller 13' can be tilted in a plane perpendicular to the front-rear direction by moving one of the bearings 15a 'up and / or down the other. ing.
  • the actuator 15b ′ is controlled by the controller 30.
  • the tension applied to the endless belt 14 is greater on the left side in the width direction. It becomes larger than the right side in the width direction. As a result, the endless belt 14 is moved to the right in the width direction by applying a force toward the right in the width direction.
  • the edge roller 13 'is tilted so that the left end in the width direction of the edge roller 13' is positioned below the right end in the width direction the tension applied to the endless belt 14 is greater on the left side in the width direction than on the right side in the width direction. Becomes smaller.
  • the moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 15b 'is controlled so that the edge roller 13' is tilted in the direction in which the meandering is corrected.
  • the edge roller 13 ' is controlled to be tilted around the axis in the front-rear direction, but the present invention is not limited to the above configuration. That is, the edge roller 13 ′ may be inclined around the vertical axis (that is, the actuator 15 b ′ moves at least one of the bearings 15 a ′ in the front-rear direction). In this case, since a large frictional force is generated in the axial direction of the inclined edge roller 13 ', the endless belt 14 is moved in the width direction by this frictional force.
  • the direction of the frictional force applied from the edge roller 13 'to the endless belt 14 coincides with the front side in the front-rear direction.
  • the edge roller 13 ' is tilted so that the left end in the width direction of the edge roller 13' is positioned forward with respect to the right end in the width direction, a large frictional force generated in the axial direction of the edge roller 13 'is received.
  • the endless belt 14 moves to the right in the width direction.
  • a protective sheet 17 is provided on the inner peripheral surface 14i of the endless belt 14, and a protective sheet 19 is provided on the outer peripheral surface 14o. It is pasted.
  • the protective sheet 19 is the same material as the protective sheet 17, and the thickness is also equal to the protective sheet 17.
  • the width direction dimension of the protective sheet 19 is equal to the width direction dimension W of the endless belt 14, and the outer peripheral surface 14 o of the endless belt 14 is covered by the protective sheet 19 over substantially the entire circumference.
  • the outer peripheral surface 14o is protected so that the outer peripheral surface 14o of the endless belt 14 is not damaged by contact with the edge roller 13 '. It is protected by the sheet 19. For this reason, deformation such as warping of the endless belt 14 caused by scratches on the outer peripheral surface 14o of the endless belt 14 is prevented.
  • the bending rigidity required for the protective sheet 19 is the same as that required for the protective sheet 17 provided on the inner peripheral surface 14 i of the endless belt 14. That is, it is sufficient that the bending rigidity of the endless belt 14 is sufficiently larger than that of the protective sheet 19.
  • the ratio of the bending rigidity of the endless belt 14 to the protective sheet 19 may be 10 or more, and more preferably 100 or more.
  • the automobile C is used as a test body, but the present invention is not limited to the above configuration. That is, a moving belt mechanism used in a vehicle other than a vehicle (for example, a vehicle that does not use a prime mover, a mock-up model for evaluating aerodynamic characteristics of a vehicle), an aircraft, or a test apparatus using a vehicle wheel or a suspension alone as a test body. Is also included in the moving belt mechanism for a running test apparatus according to an embodiment of the present invention.

Abstract

Disclosed are a moving belt mechanism for a travelling test device, and an endless belt. The moving belt mechanism for a travelling test device has an endless belt which is wound onto a meander correction roller for correcting meandering of said endless belt by being inclined about an axis perpendicular to the axis of rotation. An inner peripheral-side protective sheet for protecting substantially the entire inner peripheral surface of the endless belt is provided on the inner peripheral surface of the endless belt, and the endless belt has sufficient flexural rigidity so as not to deform under stress which is applied in such a way that the endless belt is bent due to distortion of the inner peripheral-side protective sheet.

Description

走行試験装置用ムービングベルト機構及び無端ベルトMoving belt mechanism and endless belt for running test equipment
　本発明は、風洞試験装置等の走行試験装置に使用されるムービングベルト機構及び無端ベルトに関する。 The present invention relates to a moving belt mechanism and an endless belt used in a traveling test apparatus such as a wind tunnel test apparatus.
　自動車等の試験体の走行性能や空力性能を評価するために、ＪＰ２００７－１０１４１０Ａ（日本国特許公開公報）にあるような、ムービングベルト機構を備えた走行試験装置が使用されている。このような走行試験装置は、駆動ドラムと従動ドラムから構成される一対のドラムに鋼製の無端ベルトが巻き掛けられたムービングベルト機構を備えている。ムービングベルト機構に試験体の車輪を乗せて無端ベルトを周回させることによって、無端ベルトが模擬路面として機能し、試験体を実際の路面上で走行させる走行試験と同等の試験環境が走行試験装置上で実現される。 In order to evaluate the running performance and aerodynamic performance of a test body such as an automobile, a running test apparatus having a moving belt mechanism as described in JP2007-101410A (Japan Patent Publication) is used. Such a running test apparatus includes a moving belt mechanism in which a steel endless belt is wound around a pair of drums each including a driving drum and a driven drum. By placing the wheel of the test body on the moving belt mechanism and rotating the endless belt, the endless belt functions as a simulated road surface, and the test environment equivalent to the driving test for running the test body on the actual road surface is It is realized with.
　このようなムービングベルト機構においては、無端ベルトの幅方向両端部が中央部に対してベルト外周側に反り返る変形が比較的短時間のうちに発生し、無端ベルトの寿命が短いものとなっていた。 In such a moving belt mechanism, the deformation in which both end portions in the width direction of the endless belt warp toward the outer peripheral side of the belt with respect to the central portion occurs in a relatively short time, and the life of the endless belt is short. .
　上記の事情に鑑みれば、本発明は、無端ベルトに反り等の変形が発生しにくく、無端ベルトの長寿命化を実現する走行試験装置用ムービングベルト機構及び無端ベルトを提供する点で有利である。 In view of the above circumstances, the present invention is advantageous in that it provides a moving belt mechanism for an endless belt and an endless belt that are unlikely to undergo warping and other deformations in the endless belt and realize a long life of the endless belt. .
　本発明の実施形態に係る走行試験装置用ムービングベルト機構は、無端ベルトが巻き掛けられ、回転軸に垂直な軸周りに傾斜することによって該無端ベルトの蛇行を修正する蛇行修正ローラを備え、無端ベルトの内周面には、略全周に亙って該内周面を保護するための内周側保護シートが設けられており、無端ベルトは、内周側保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質変形しない程度の曲げ剛性を有することを特徴とする。 A moving belt mechanism for a running test apparatus according to an embodiment of the present invention includes a meandering correction roller that corrects meandering of an endless belt by being wound around an endless belt and tilting around an axis perpendicular to a rotation axis. The inner peripheral surface of the belt is provided with an inner peripheral side protective sheet for protecting the inner peripheral surface over substantially the entire circumference. The endless belt is formed by the distortion of the inner peripheral side protective sheet. It is characterized in that it has a bending rigidity to such an extent that it is not substantially deformed by a stress applied so as to warp.
　本発明者は、数多くの実験と技術的考察の結果、ドラムや蛇行修正ローラと無端ベルトとの当接によって生じる無端ベルト内周面の傷が、蛇行修正ローラによって広げられることによって、無端ベルトの変形が発生することを発見した。上記の本発明の実施形態の構成によれば、内周側保護シートによって無端ベルトの内周が保護されるため、無端ベルトの内周面に傷がつくことがない。また、無端ベルトが、内周側保護シートの応力によって該無端ベルトが実質変形しない程度の曲げ剛性を有するため、内周側保護シートに変形が生じたとしても、無端ベルトに反りなどの変形が生じることはない。 As a result of numerous experiments and technical considerations, the inventor has found that the scratches on the inner peripheral surface of the endless belt caused by the contact between the drum and the meandering correction roller and the endless belt are spread by the meandering correction roller, It was discovered that deformation occurred. According to the configuration of the above-described embodiment of the present invention, the inner periphery of the endless belt is protected by the inner peripheral side protection sheet, so that the inner peripheral surface of the endless belt is not damaged. In addition, since the endless belt has a bending rigidity such that the endless belt is not substantially deformed by the stress of the inner peripheral protective sheet, even if the inner peripheral protective sheet is deformed, the endless belt is not deformed such as warping. It does not occur.
　また、無端ベルトの曲げ剛性が、内周側保護シートの曲げ剛性の１０倍以上であることが好ましい。さらに好ましくは、無端ベルトの曲げ剛性が、内周側保護シートの曲げ剛性の１００倍以上である。 In addition, it is preferable that the bending rigidity of the endless belt is 10 times or more than the bending rigidity of the inner peripheral protective sheet. More preferably, the bending rigidity of the endless belt is 100 times or more of the bending rigidity of the inner peripheral protective sheet.
　また、内周側保護シートの縦弾性係数が、０．０２［ＧＰａ］以上である構成とすることが好ましい。さらに好ましくは、内周側保護シートの縦弾性係数が、０．１［ＧＰａ］以上である。 Moreover, it is preferable that the longitudinal elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more. More preferably, the longitudinal elastic modulus of the inner peripheral protective sheet is 0.1 [GPa] or more.
　また、内周側保護シートの横弾性係数が、０．０１［ＧＰａ］以上である構成とすることが好ましい。さらに好ましくは、内周側保護シートの横弾性係数が、０．０２［ＧＰａ］以上である。 Moreover, it is preferable that the transverse elastic modulus of the inner peripheral protective sheet is 0.01 [GPa] or more. More preferably, the lateral elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more.
　上記の大きさの縦弾性係数及び横弾性係数を有する保護シートは、板厚方向の圧縮荷重及び、面方向に沿ったせん断荷重に対して充分に高い剛性を有する。内周側保護シートは、ドラムと無端ベルトとの間に挟まれて上記の方向の圧縮荷重及びせん断荷重を受けるが、内周側保護シートはこれらの圧縮及びせん断荷重に対して事実上剛体と見なせるため、内周側保護シートの弾性に起因する、走行試験装置の試験性能に影響を与えるような振動が無端ベルトに発生することはない。 The protective sheet having a longitudinal elastic modulus and a transverse elastic modulus having the above-described sizes has sufficiently high rigidity against a compressive load in the plate thickness direction and a shear load along the surface direction. The inner peripheral protective sheet is sandwiched between the drum and the endless belt and receives a compressive load and a shear load in the above-described direction. However, the inner peripheral protective sheet is substantially rigid with respect to the compressive and shear loads. Therefore, vibrations that affect the test performance of the running test apparatus due to the elasticity of the inner peripheral protective sheet do not occur in the endless belt.
　また、蛇行修正ローラが、一対のドラムとは別個に設けられ且つ無端ベルトに当接するエッジローラである構成としてもよい。例えば、エッジローラの一端が上方に、他端が下方に移動するよう駆動されて該エッジローラが傾斜するようになっている。或いは、エッジローラの一端が試験体の進行方向に、他端が該試験体の後退方向に移動するよう駆動されて該エッジローラが傾斜するようになっている。 Further, the meandering correction roller may be an edge roller that is provided separately from the pair of drums and contacts the endless belt. For example, the edge roller is tilted by being driven so that one end of the edge roller moves upward and the other end moves downward. Alternatively, the edge roller is inclined by being driven so that one end of the edge roller moves in the traveling direction of the specimen and the other end moves in the backward direction of the specimen.
　また、エッジローラが、前記無端ベルトの内周面に内周側保護シートを介して当接している構成としてもよい。 Further, the edge roller may be in contact with the inner peripheral surface of the endless belt via an inner peripheral protective sheet.
　或いは、無端ベルトの外周面には、略全周に亙って該外周面を保護するための外周側保護シートが設けられており、エッジローラが、無端ベルトの外周面に外周側保護シートを介して当接し、無端ベルトは、外周側保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質変形しない程度の曲げ剛性を有する構成としてもよい。この場合、外周側保護シートが接着によって無端ベルトの外周面に貼り付けられる構成としてもよい。 Alternatively, the outer peripheral surface of the endless belt is provided with an outer peripheral protection sheet for protecting the outer peripheral surface over substantially the entire circumference, and the edge roller is provided with an outer peripheral protective sheet on the outer peripheral surface of the endless belt. The endless belt may be configured to have a bending rigidity that does not substantially deform due to stress applied to warp the endless belt due to distortion of the outer peripheral side protection sheet. In this case, it is good also as a structure by which an outer peripheral side protection sheet is affixed on the outer peripheral surface of an endless belt by adhesion | attachment.
　或いは、蛇行修正ローラが、前記一対のドラムのいずれか一方であり、蛇行修正ローラの一端が試験体の進行方向に、他端が該試験体の後退方向に移動するよう駆動されて該蛇行修正ローラが傾斜するようになっている構成としてもよい。 Alternatively, the meander correction roller is one of the pair of drums, and the meander correction roller is driven so that one end of the meander correction roller moves in the traveling direction of the test body and the other end moves in the backward direction of the test body. It is good also as a structure where a roller inclines.
　また、内周側保護シートが、例えば接着によって前記無端ベルトの内周面に貼り付けられる構成としてもよい。 Further, the inner peripheral protective sheet may be attached to the inner peripheral surface of the endless belt, for example, by adhesion.
　また、本発明の実施形態に係る鋼製の無端ベルトは、その内周面に、略全周に亙って該内周面を保護するための内周側保護シートが設けられており、さらに、該保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質変形しない程度の曲げ剛性を有する。 Further, the steel endless belt according to the embodiment of the present invention is provided with an inner peripheral protection sheet for protecting the inner peripheral surface over substantially the entire inner periphery thereof, and further, The bending strength is such that the endless belt is not substantially deformed by stress applied to warp the endless belt due to distortion of the protective sheet.
図１は、本発明の第１の実施形態に係る風洞試験装置の概略側面図である。FIG. 1 is a schematic side view of a wind tunnel testing apparatus according to a first embodiment of the present invention. 図２は、本発明の第１の実施形態に係る駆動ドラム付近の無端ベルト及び保護シートの概略拡大側面図である。FIG. 2 is a schematic enlarged side view of an endless belt and a protective sheet in the vicinity of the drive drum according to the first embodiment of the present invention. 図３は、本発明の第１の実施形態において、無端ベルトに取り付ける前の保護シートを示した概略外観図である。FIG. 3 is a schematic external view showing the protective sheet before being attached to the endless belt in the first embodiment of the present invention. 図４は、本発明の第１の実施形態に係る、保護シートが貼り付けられた無端ベルトの内周面の概略展開図の一部である。FIG. 4 is a part of a schematic development view of an inner peripheral surface of an endless belt to which a protective sheet is attached according to the first embodiment of the present invention. 図５は、本発明の第２の実施形態に係る風洞試験装置の概略側面図である。FIG. 5 is a schematic side view of a wind tunnel testing apparatus according to the second embodiment of the present invention. 図６は、本発明の第３の実施形態に係る風洞試験装置の概略側面図である。FIG. 6 is a schematic side view of a wind tunnel testing apparatus according to the third embodiment of the present invention.
　以下、本発明の実施の形態について図面を用いて説明する。図１は、本発明の第１の実施形態に係る風洞試験装置１の概略側面図である。風洞試験装置１は、自動車Ｃが載置される模擬路面として機能するムービングベルト機構１０と、自動車Ｃに前方（図中左側）から風を当てる風供給部２０と、風洞試験装置１の各部の動作を制御するコントローラ３０とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of a wind tunnel testing apparatus 1 according to the first embodiment of the present invention. The wind tunnel test apparatus 1 includes a moving belt mechanism 10 that functions as a simulated road surface on which the automobile C is placed, a wind supply unit 20 that applies wind to the automobile C from the front (left side in the figure), and each part of the wind tunnel test apparatus 1. And a controller 30 for controlling the operation.
　なお、以下の説明においては、自動車Ｃが水平な模擬路面１４ａ上に図１中右側から左側へ走行するように配置されるものとして、自動車Ｃの走行方向を基準に各方向を定義する。すなわち、図１中左側を前後方向前側、図１中右側を前後方向後ろ側、紙面裏側を幅方向右側、紙面表側を幅方向左側と定義する。 In the following description, each direction is defined on the basis of the traveling direction of the automobile C on the assumption that the automobile C is arranged on the horizontal simulated road surface 14a so as to travel from the right side to the left side in FIG. That is, the left side in FIG. 1 is defined as the front side in the front-rear direction, the right side in FIG. 1 is defined as the rear side in the front-rear direction, the back side of the page is defined as the right side in the width direction, and the front side is defined as the left side in the width direction.
　ムービングベルト機構１０は、前後方向に並べられた従動ドラム１１と駆動ドラム１２、及び、従動ドラム１１と駆動ドラム１２との間に配置されたエッジローラ１３とを備えている。また、従動ドラム１１、駆動ドラム１２及びエッジローラ１３には、無端ベルト１４が巻き掛けられている。 The moving belt mechanism 10 includes a driven drum 11 and a driving drum 12 arranged in the front-rear direction, and an edge roller 13 disposed between the driven drum 11 and the driving drum 12. An endless belt 14 is wound around the driven drum 11, the drive drum 12 and the edge roller 13.
　従動ドラム１１及び駆動ドラム１２は、それぞれ回転軸を幅方向に向けて配置されている。そのため、駆動ドラム１２を図中時計方向に回転させると、無端ベルト１４の上部１４ａが前後方向前側から後ろ側に移動するように、無端ベルト１４が、従動ドラム１１、駆動ドラム１２及びエッジローラ１３の周りを回動する。そして、無端ベルト１４と従動ドラム１１及びエッジローラ１３との間に働く摩擦力によって、無端ベルト１４の上記回動に伴って従動ドラム１１及びエッジローラ１３が図中時計方向に回転するようになる。 The driven drum 11 and the drive drum 12 are each arranged with the rotation axis in the width direction. Therefore, when the driving drum 12 is rotated in the clockwise direction in the drawing, the endless belt 14 is driven by the driven drum 11, the driving drum 12, and the edge roller 13 so that the upper portion 14a of the endless belt 14 moves from the front side in the front-rear direction. Rotate around. Then, due to the frictional force acting between the endless belt 14 and the driven drum 11 and the edge roller 13, the driven drum 11 and the edge roller 13 rotate in the clockwise direction in the figure as the endless belt 14 rotates. .
　駆動ドラム１２には、駆動ドラム１２を回転駆動する為のサーボモータ１６が取り付けられている。サーボモータ１６は、回転数を精密に制御可能なモータであり、所望の回転速度で駆動ドラム１２を回転駆動することが可能となっている。すなわち、本実施形態では、所望の周速で無端ベルト１４を回動させることができるようになっている。なお、サーボモータ１６の回転及び停止、並びに回転数は、コントローラ３０によって制御される。 A servo motor 16 for rotating the drive drum 12 is attached to the drive drum 12. The servo motor 16 is a motor capable of precisely controlling the number of rotations, and can drive the drive drum 12 at a desired rotation speed. That is, in the present embodiment, the endless belt 14 can be rotated at a desired peripheral speed. The rotation and stop of the servo motor 16 and the rotation speed are controlled by the controller 30.
　次に、風供給部２０について説明する。風供給部２０は、エアーダクト２１と送風ファン２２を備えている。エアーダクト２１の空気入口２１ａは、自動車Ｃの前後方向後ろ側（図中右側）に配置され、空気出口２１ｂは、自動車Ｃの前後方向前側（図中左側）に配置されている。送風ファン２２は、エアーダクト２１の内部に配置されており、送風ファン２２を駆動することによって、エアーダクト２１の空気入口２１ａから空気を取り入れて、空気出口２１ｂから自動車Ｃに向けて送風することが可能となっている。 Next, the wind supply unit 20 will be described. The wind supply unit 20 includes an air duct 21 and a blower fan 22. The air inlet 21a of the air duct 21 is arranged on the rear side in the front-rear direction of the automobile C (right side in the figure), and the air outlet 21b is arranged on the front side in the front-rear direction of the automobile C (left side in the figure). The blower fan 22 is disposed inside the air duct 21. By driving the blower fan 22, air is taken in from the air inlet 21 a of the air duct 21 and blown toward the automobile C from the air outlet 21 b. Is possible.
　送風ファン２２は、インバータモータ２３によって駆動させる。インバータモータ２３は、回転数を精密に制御可能なモータであり、自動車Ｃに送る風の風速を精密に制御することが可能となっている。なお、インバータモータ２３の回転及び停止、並びに回転数は、コントローラ３０によって制御される。 The blower fan 22 is driven by an inverter motor 23. The inverter motor 23 is a motor capable of precisely controlling the rotation speed, and can precisely control the wind speed of the wind sent to the automobile C. The rotation and stop of the inverter motor 23 and the number of rotations are controlled by the controller 30.
　このように、本実施形態においては、模擬路面としての無端ベルト１４が所望の周速で回動され、且つ、自動車Ｃの前方から所望の風速の風を送ることによって、自動車Ｃを屋外で走行させたときと同様の環境が、自動車Ｃを静止させた状態で再現されるようになっている。 Thus, in the present embodiment, the endless belt 14 as a simulated road surface is rotated at a desired peripheral speed, and the vehicle C travels outdoors by sending wind at a desired wind speed from the front of the vehicle C. The same environment as when the vehicle C is made is reproduced with the automobile C stationary.
　エッジローラ１３は、回転軸を幅方向に向けて配置されている。さらに、エッジローラ１３は、無端ベルト１４の下部１４ｂにおいて、内周面１４ｉに当接し、無端ベルト１４に均一な張力を加えている。また、エッジローラ１３を幅方向両端で支持する一対の軸受１５ａには、軸受１５ａの少なくとも一方を上下方向に移動するためのアクチュエータ１５ｂが接続されている。アクチュエータ１５ｂを駆動することによって、軸受１５ａの一方を上に、及び／又は、他方を下に移動させて、エッジローラ１３を前後方向と垂直な面内で傾けることができるようになっている。なお、アクチュエータ１５ｂは、コントローラ３０によって制御される。 The edge roller 13 is arranged with the rotation axis directed in the width direction. Further, the edge roller 13 is in contact with the inner peripheral surface 14 i at the lower portion 14 b of the endless belt 14 and applies a uniform tension to the endless belt 14. An actuator 15b for moving at least one of the bearings 15a in the vertical direction is connected to the pair of bearings 15a that support the edge roller 13 at both ends in the width direction. By driving the actuator 15b, one of the bearings 15a is moved up and / or the other is moved down so that the edge roller 13 can be tilted in a plane perpendicular to the front-rear direction. The actuator 15b is controlled by the controller 30.
　エッジローラ１３は、無端ベルト１４の幅方向への蛇行を修正するために使用される。エッジローラ１３の幅方向左側が幅方向右側に対して上側に位置するようにエッジローラ１３が傾けられると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも小さくなる。この結果、無端ベルト１４には幅方向左側に向かう力が加わって、無端ベルト１４は幅方向左側に移動する。一方、エッジローラ１３の幅方向左側が幅方向右側に対して下側に位置するようにエッジローラ１３が傾けられると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも大きくなる。この結果、無端ベルト１４には幅方向右側に向かう力が加わって、無端ベルト１４は幅方向右側に移動する。このように、エッジローラ１３を傾けることによって、無端ベルト１４を幅方向に移動させることが可能となる。本実施形態のムービングベルト機構１０は、無端ベルト１４の蛇行（すなわち無端ベルト１４の幅方向の位置ずれ）を検知するための図示しない蛇行検知センサを有しており、コントローラ３０は、蛇行検知センサの検知結果に基づいて、蛇行が修正される方向にエッジローラ１３を傾けるようアクチュエータ１５ｂを制御する。 The edge roller 13 is used to correct the meandering of the endless belt 14 in the width direction. If the edge roller 13 is tilted so that the left side in the width direction of the edge roller 13 is located above the right side in the width direction, the tension applied to the endless belt 14 is smaller on the left side in the width direction than on the right side in the width direction. As a result, a force toward the left side in the width direction is applied to the endless belt 14, and the endless belt 14 moves to the left side in the width direction. On the other hand, when the edge roller 13 is tilted so that the width direction left side of the edge roller 13 is positioned below the width direction right side, the tension applied to the endless belt 14 is greater in the width direction left side than in the width direction right side. growing. As a result, a force toward the right side in the width direction is applied to the endless belt 14, and the endless belt 14 moves to the right side in the width direction. Thus, by tilting the edge roller 13, the endless belt 14 can be moved in the width direction. The moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 15b is controlled to tilt the edge roller 13 in the direction in which the meandering is corrected.
　なお、上記構成においては、エッジローラ１３が前後方向の軸周りに（すなわち、前後方向と垂直な面内で）傾くように制御されているが、本発明は上記の構成に限定されるものではない。すなわち、エッジローラ１３が上下方向の軸周りに傾く（すなわち、アクチュエータ１５ｂが、軸受１５ａの少なくとも一方を前後方向に移動し、エッジローラ１３を水平面内で傾ける）構成としてもよい。この場合、傾いたエッジローラ１３の軸方向に大きな摩擦力が生じるため、この摩擦力によって無端ベルト１４が幅方向に移動する。 In the above configuration, the edge roller 13 is controlled to tilt around the axis in the front-rear direction (that is, in a plane perpendicular to the front-rear direction), but the present invention is not limited to the above configuration. Absent. That is, the edge roller 13 may be tilted around the vertical axis (that is, the actuator 15b moves at least one of the bearings 15a in the front-rear direction and tilts the edge roller 13 in a horizontal plane). In this case, since a large frictional force is generated in the axial direction of the inclined edge roller 13, the endless belt 14 is moved in the width direction by this frictional force.
　エッジローラ１３が傾いていない（すなわち、エッジローラ１３の回転軸が幅方向に一致している）状態では、エッジローラ１３から無端ベルト１４に加える摩擦力の方向は前後方向前側に一致する。ここで、エッジローラ１３の幅方向左端が幅方向右端に対して前方に位置するようにエッジローラ１３が傾けられると、エッジローラ１３の軸方向に発生する大きな摩擦力を受けて、無端ベルト１４が幅方向右側に移動する。一方、エッジローラ１３の幅方向左端が幅方向右端に対して後方に位置するようにエッジローラ１３が傾けられると、無端ベルト１４が幅方向左側に移動する。 In a state where the edge roller 13 is not inclined (that is, the rotation axis of the edge roller 13 coincides with the width direction), the direction of the frictional force applied from the edge roller 13 to the endless belt 14 coincides with the front side in the front-rear direction. Here, when the edge roller 13 is tilted so that the left end in the width direction of the edge roller 13 is positioned in front of the right end in the width direction, the endless belt 14 receives a large frictional force generated in the axial direction of the edge roller 13. Moves to the right in the width direction. On the other hand, when the edge roller 13 is tilted so that the left end in the width direction of the edge roller 13 is positioned rearward with respect to the right end in the width direction, the endless belt 14 moves to the left in the width direction.
　本実施形態においては、無端ベルト１４に反り等の変形が発生するのを防止するため、無端ベルト１４の内周面１４ｉに保護シート１７が貼り付けられている。保護シート１７の構成について以下に説明する。 In the present embodiment, a protective sheet 17 is attached to the inner peripheral surface 14i of the endless belt 14 in order to prevent the endless belt 14 from being deformed such as warping. The configuration of the protective sheet 17 will be described below.
　図２は、駆動ドラム１２付近の無端ベルト１４及び保護シート１７の拡大側面図である。図２に示されるように、無端ベルト１４の内周面１４ｉには、保護シート１７が略全面に亙って貼り付けられている。保護シート１７の一面には、接着層１７ａが形成されており、この接着層１７ａに含まれる接着剤によって、保護シート１７は、無端ベルト１４の内周面１４ｉに接着固定される。 FIG. 2 is an enlarged side view of the endless belt 14 and the protective sheet 17 in the vicinity of the drive drum 12. As shown in FIG. 2, the protective sheet 17 is attached to the inner peripheral surface 14 i of the endless belt 14 over substantially the entire surface. An adhesive layer 17 a is formed on one surface of the protective sheet 17, and the protective sheet 17 is bonded and fixed to the inner peripheral surface 14 i of the endless belt 14 by an adhesive contained in the adhesive layer 17 a.
　無端ベルト１４は、厚さｔＢが約０．６［ｍｍ］であるマルテンサイト系ステンレス鋼の鋼帯である。また、無端ベルト１４の縦弾性係数ＥＢは約２３０ＧＰａとなっている。無端ベルト１４の保護シート１７の保護シート本体１７ｂは、樹脂材料から形成されている。保護シート本体１７ｂの厚さｔＳは約０．８～１．２［ｍｍ］である。また、保護シート本体１７ｂの縦弾性係数ＥＳは約０．１～０．２［ＧＰａ］となっている。従動ドラム１１と駆動ドラム１２の軸間距離をＬとすると、無端ベルト１４及び保護シート１７の、幅方向の反りに対する曲げ剛性ＢＢ、ＢＳは、夫々式（１）及び（２）にて示される。 The endless belt 14 is a steel strip of a martensitic stainless steel thickness t B of about 0.6 [mm]. Further, modulus of longitudinal elasticity of the endless belt 14 E B is about 230 GPa. The protective sheet main body 17b of the protective sheet 17 of the endless belt 14 is formed from a resin material. The thickness t S of the protective sheet body 17b is about 0.8 to 1.2 [mm]. The longitudinal elastic modulus E S of the protective sheet body 17b is about 0.1 ~ 0.2 [GPa]. Assuming that the distance between the axes of the driven drum 11 and the driving drum 12 is L, the bending rigidity B B and B S of the endless belt 14 and the protective sheet 17 with respect to the warp in the width direction are expressed by the equations (1) and (2), respectively. Indicated.
Figure JPOXMLDOC01-appb-M000001
Figure JPOXMLDOC01-appb-M000001
　無端ベルト１４の保護シート１７に対する縦弾性係数の比（ＥＢ／ＥＳ）が約１１５０～２３００、厚さの比（ｔＢ／ｔＳ）が約０．５～０．７５であるので、無端ベルト１４の保護シート１７に対する曲げ剛性の比（ＢＢ／ＢＳ）は、約１４３～９７１である。 Since the ratio of the longitudinal elastic modulus of the endless belt 14 to the protective sheet 17 (E B / E S ) is about 1150 to 2300 and the ratio of thickness (t B / t S ) is about 0.5 to 0.75, The ratio of the bending stiffness of the endless belt 14 to the protective sheet 17 (B B / B S ) is about 143 to 971.
　本実施形態においては、上記のように無端ベルト１４の内周面１４ｉは保護シート１７によって保護されており、従動ドラム１１、駆動ドラム１２又はエッジローラ１３と無端ベルト１４とは直接接触することは無く、内周面１４ｉに傷が生じることはない。従って、本実施形態の構成においては、無端ベルト１４の内周面の傷が広げられることによって生じ得る無端ベルト１４の反りや破壊が、発生しにくくなっている。この結果、無端ベルト１４の寿命は長いものとなっている。 In the present embodiment, as described above, the inner peripheral surface 14i of the endless belt 14 is protected by the protective sheet 17, and the driven drum 11, the drive drum 12, or the edge roller 13 and the endless belt 14 are not in direct contact with each other. There is no scratch on the inner peripheral surface 14i. Therefore, in the configuration of the present embodiment, the endless belt 14 is less likely to be warped or broken due to widening of scratches on the inner peripheral surface of the endless belt 14. As a result, the endless belt 14 has a long life.
　また、本実施形態においては、エッジローラ１３と保護シート１７との接触によって、保護シート１７の内周面１７ｃに、無端ベルト１４の送り方向に沿った方向の傷が発生し、エッジローラ１３を傾ける動作によって保護シート１７の傷が広げられて、保護シート１７単体では反りが発生する可能性がある。しかしながら、上記のように、無端ベルト１４の曲げ剛性ＢＢは保護シート１７の曲げ剛性ＢＳよりも充分に大きいため、保護シート１７の傷が広げられたとしても無端ベルト１４に反りが発生することはない。 Further, in the present embodiment, the contact between the edge roller 13 and the protective sheet 17 causes a scratch in the direction along the feed direction of the endless belt 14 on the inner peripheral surface 17c of the protective sheet 17, and the edge roller 13 is The damage of the protective sheet 17 is widened by the tilting operation, and the protective sheet 17 alone may be warped. However, as described above, the bending rigidity B B of the endless belt 14 is sufficiently larger than the bending rigidity B S of the protective sheet 17, so that the endless belt 14 warps even if the scratches on the protective sheet 17 are widened. There is nothing.
　保護シート１７の、従動ドラム１１及び駆動ドラム１２と無端ベルト１４との間に挟まれている部分には、保護シート１７の厚さ方向の圧縮荷重が加えられる。また、回転する駆動ドラム１２及び無端ベルト１４と保護シート１７との間に働く摩擦力によって、保護シート１７には、その面方向に沿ったせん断荷重が加えられる。保護シート１７は弾性体であるため、保護シート１７のドラムと無端ベルト１４との間に挟まれた部分は、一種のばねとして機能する。保護シート１７の弾性係数が小さいと、ドラムと無端ベルト１４との間で挟まれた保護シート１７の変形量が大きくなり、回動する無端ベルト１４に大きな振動が発生する可能性がある。すなわち、保護シート１７は、保護シート１７に加わる圧縮荷重やせん断荷重に対して保護シート１７を充分に剛体と見なせる（すなわち、保護シート１７の変形による無端ベルト１４の振動や、駆動ドラム１２の動きに対する無端ベルト１４の追従の遅延が無視できる）だけの縦弾性係数及び横弾性係数を有することが望ましい。 A compressive load in the thickness direction of the protective sheet 17 is applied to a portion of the protective sheet 17 sandwiched between the driven drum 11 and the driving drum 12 and the endless belt 14. Further, a shearing load along the surface direction is applied to the protective sheet 17 by the friction force acting between the rotating drive drum 12 and the endless belt 14 and the protective sheet 17. Since the protective sheet 17 is an elastic body, the portion of the protective sheet 17 sandwiched between the drum and the endless belt 14 functions as a kind of spring. If the elastic coefficient of the protective sheet 17 is small, the amount of deformation of the protective sheet 17 sandwiched between the drum and the endless belt 14 increases, and a large vibration may occur in the rotating endless belt 14. That is, the protective sheet 17 can be regarded as a sufficiently rigid body against the compressive load and shear load applied to the protective sheet 17 (that is, the vibration of the endless belt 14 due to the deformation of the protective sheet 17 and the movement of the drive drum 12). It is desirable to have a longitudinal elastic modulus and a transverse elastic modulus of the endless belt 14 with respect to the delay coefficient.
　本実施形態においては、前述のように保護シート１７の縦弾性係数ＥＳが０．１～０．２［ＧＰａ］であり、また、保護シート１７の横弾性係数ＧＳは、０．０３５～０．０７［ＧＰａ］である。ＥＳ及びＧＳの大きさは、保護シート１７に加わる圧縮荷重やせん断荷重に対して保護シート１７を充分に剛体と見なせるだけの大きさである。 In the present embodiment, the longitudinal elastic modulus E S is 0.1-0.2 of the protective sheet 17 as previously described [GPa], also shear modulus G S of the protective sheet 17 is 0.035 to 0.07 [GPa]. The sizes of E S and G S are large enough to allow the protective sheet 17 to be sufficiently rigid with respect to the compressive load and shear load applied to the protective sheet 17.
　なお、本実施形態においては、無端ベルト１４と保護シート１７の曲げ剛性の比（ＢＢ／ＢＳ）が１４３～９７１となっているが、本発明は上記構成に限定されるものではない。すなわち、無端ベルト１４の曲げ剛性が保護シート１７に比べて十分に大きければよい。具体的には、無端ベルト１４の保護シート１７に対する曲げ剛性の比が１０以上であればよく、より好ましくは１００以上である。 In this embodiment, the ratio (B B / B S ) of the bending rigidity between the endless belt 14 and the protective sheet 17 is 143 to 971, but the present invention is not limited to the above configuration. That is, it is sufficient that the bending rigidity of the endless belt 14 is sufficiently larger than that of the protective sheet 17. Specifically, the ratio of the bending rigidity of the endless belt 14 to the protective sheet 17 may be 10 or more, and more preferably 100 or more.
　また、本実施形態においては、保護シート１７の縦弾性係数ＥＳが０．１～０．２［ＧＰａ］、横弾性係数ＧＳが０．０３５～０．０７［ＧＰａ］であるが、本発明は上記構成に限定されるものではない。すなわち、保護シート１７の縦弾性係数及び横弾性係数は、保護シート１７に加わる圧縮荷重やせん断荷重に対して、保護シート１７を充分に剛体と見なせるだけの大きさであればよい。具体的には、保護シート１７の縦弾性係数は０．０２［ＧＰａ］以上であればよく、より好ましくは０．１［ＧＰａ］以上である。また、保護シート１７の横弾性係数は０．０１［ＧＰａ］以上あればよく、より好ましくは０．０２［ＧＰａ］以上である。 In the present embodiment, the longitudinal elastic modulus E S is 0.1-0.2 of the protective sheet 17 [GPa], but modulus of transverse elasticity G S is 0.035 ~ 0.07 [GPa], the The invention is not limited to the above configuration. In other words, the longitudinal elastic modulus and the transverse elastic modulus of the protective sheet 17 need only be large enough that the protective sheet 17 can be regarded as a rigid body with respect to the compressive load and shear load applied to the protective sheet 17. Specifically, the longitudinal elastic modulus of the protective sheet 17 may be 0.02 [GPa] or more, and more preferably 0.1 [GPa] or more. Moreover, the lateral elastic modulus of the protective sheet 17 should just be 0.01 [GPa] or more, More preferably, it is 0.02 [GPa] or more.
　次いで、保護シート１７の無端ベルト１４への取り付け手順について説明する。図３は、無端ベルト１４に取り付ける前の保護シート１７を示したものであり、図４は、保護シート１７が貼り付けられた無端ベルト１４の内周面１４ｉの展開図の一部である。図３に示されるように、保護シート１７を無端ベルト１４に貼り付ける前に、保護シート１７は、長辺１７Ｌの寸法ＬＳが１０００～２０００［ｍｍ］となり、幅（長辺間の間隔）ＷＳが無端ベルト１４の幅方向寸法Ｗよりやや大きい平行四辺形形状にカットされる。なお、保護シート１７の長辺１７Ｌと短辺１７Ｓのなす角度θは約４５°である。 Next, a procedure for attaching the protective sheet 17 to the endless belt 14 will be described. FIG. 3 shows the protective sheet 17 before being attached to the endless belt 14, and FIG. 4 is a part of a development view of the inner peripheral surface 14i of the endless belt 14 to which the protective sheet 17 is attached. As shown in FIG. 3, before pasting the protective sheet 17 to the endless belt 14, the protective sheet 17, the dimension L S of the long side 17L is 1000 ~ 2000 [mm], and the (spacing between the long side) Width W S is cut slightly larger parallelogram shape than the width dimension W of the endless belt 14. The angle θ formed by the long side 17L and the short side 17S of the protective sheet 17 is about 45 °.
　次いで、複数枚の保護シート１７を、その長辺が無端ベルト１４の縁部１４ｅと平行になり且つ、保護シート１７が無端ベルト１４の縁部１４ｅからはみ出すように、無端ベルト１４の内周面１４ｉに貼り付ける。なお、保護シート１７は、保護シート１７の表面をハンドローラ等で押し当てながら、無端ベルト１４との間に空気が入らないように貼り付けられる。また、隣接する２枚の保護シート１７は、無端ベルト１４の周方向（図中左右方向）に微小な間隔ｄをおいて貼り付けられるようになっている。本実施形態においては、間隔ｄは約１ｍｍ、すなわち保護シート１７の厚さと略等しい大きさとなっている。 Next, the inner peripheral surface of the endless belt 14 has a plurality of protective sheets 17 whose long sides are parallel to the edge 14e of the endless belt 14 and so that the protective sheet 17 protrudes from the edge 14e of the endless belt 14. 14i is pasted. The protective sheet 17 is affixed so that air does not enter between the endless belt 14 while pressing the surface of the protective sheet 17 with a hand roller or the like. Further, the two adjacent protective sheets 17 are attached with a minute distance d in the circumferential direction of the endless belt 14 (left and right direction in the figure). In the present embodiment, the distance d is about 1 mm, that is, approximately the same as the thickness of the protective sheet 17.
　次いで、保護シート１７の、無端ベルト１４の縁部１４ｅからはみ出した部分を、カッターにて切除する。次いで、保護シート１７の表面をハンマー等で軽く叩き、保護シート１７の接着層１７ａ（図２）を確実に無端ベルト１４に密着させる。 Next, the portion of the protective sheet 17 that protrudes from the edge 14e of the endless belt 14 is cut off with a cutter. Next, the surface of the protective sheet 17 is tapped with a hammer or the like, and the adhesive layer 17a (FIG. 2) of the protective sheet 17 is securely adhered to the endless belt.
　以上の手順によって、保護シート１７の無端ベルト１４への貼り付けが完了する。なお、保護シート１７の長辺１７Ｌの寸法や、１つの無端ベルト１４に貼り付ける保護シート１７の枚数は、無端ベルト１４の周長に応じて適宜選択されるものである。 By the above procedure, the attachment of the protective sheet 17 to the endless belt 14 is completed. The dimensions of the long side 17L of the protective sheet 17 and the number of protective sheets 17 to be attached to one endless belt 14 are appropriately selected according to the circumferential length of the endless belt 14.
　次に、本発明の第１の実施形態の具体的な実施例を示す。本実施例における無端ベルト１４は、幅５００ｍｍ、周長８５００ｍｍ、厚さ０．６ｍｍのマルテンサイト系ステンレス鋼のベルトである。また、従動ドラム１１及び駆動ドラム１２の直径は５５０ｍｍであり、エッジローラ１３の直径は３００ｍｍである。また、保護シート１７は、厚さが約１ｍｍであり、縦弾性係数が０．１８ＧＰａであり、横弾性係数が０．０６ＧＰａである。無端ベルト１４は、その張力が２００ｋＮとなるように、従動ドラム１１、駆動ドラム１２及びエッジローラ１３に巻き回されている。また、無端ベルト１４の内周面１４ｉには、平行四辺形の保護シート１７が５枚張られている。 Next, specific examples of the first embodiment of the present invention will be described. The endless belt 14 in this embodiment is a martensitic stainless steel belt having a width of 500 mm, a circumferential length of 8500 mm, and a thickness of 0.6 mm. The diameter of the driven drum 11 and the driving drum 12 is 550 mm, and the diameter of the edge roller 13 is 300 mm. The protective sheet 17 has a thickness of about 1 mm, a longitudinal elastic modulus of 0.18 GPa, and a lateral elastic modulus of 0.06 GPa. The endless belt 14 is wound around the driven drum 11, the drive drum 12, and the edge roller 13 so that the tension becomes 200 kN. Further, five parallelogram-shaped protective sheets 17 are stretched on the inner peripheral surface 14 i of the endless belt 14.
　上記構成のムービングベルト機構１０を、無端ベルト１４の周速が５５［ｍ／ｓ］となるように駆動した。また、比較例として、無端ベルト１４に保護シート１７を貼り付けることなく従動ドラム１１、駆動ドラム１２及びエッジローラ１３に巻き回した構成のフラットベルトを、実施例と同様の周速で駆動した。 The moving belt mechanism 10 having the above configuration was driven so that the peripheral speed of the endless belt 14 was 55 [m / s]. Moreover, as a comparative example, a flat belt wound around the driven drum 11, the drive drum 12, and the edge roller 13 without attaching the protective sheet 17 to the endless belt 14 was driven at the same peripheral speed as in the example.
　比較例においては、ムービングベルト機構１０を１０時間連続駆動したところ、無端ベルト１４の幅方向両端部に反りが確認された。反りの大きさ（無端ベルト１４の幅方向中央部に対する幅方向両端部のベルト板厚方向の変位）は３ｍｍであった。これに対し、実施例においては、ムービングベルト機構１０を１００時間連続駆動しても無端ベルト１４の反りは確認されなかった。 In the comparative example, when the moving belt mechanism 10 was continuously driven for 10 hours, warping was confirmed at both ends in the width direction of the endless belt 14. The amount of warpage (displacement in the belt thickness direction of both end portions in the width direction with respect to the center portion in the width direction of the endless belt 14) was 3 mm. On the other hand, in the example, the endless belt 14 was not warped even when the moving belt mechanism 10 was continuously driven for 100 hours.
　以上説明した本発明の第１の実施形態の風洞試験装置１は、エッジローラ１３を傾けることによって無端ベルト１４の蛇行を修正するものである。しかしながら、本発明は上記の構成に限定されるものではない。次に説明する本発明の第２の実施形態は、エッジローラ１３の代わりに、従動ドラム１１を傾けることによって、無端ベルト１４の蛇行を軽減させるものである。 The wind tunnel test apparatus 1 according to the first embodiment of the present invention described above corrects meandering of the endless belt 14 by tilting the edge roller 13. However, the present invention is not limited to the above configuration. In a second embodiment of the present invention described below, meandering of the endless belt 14 is reduced by tilting the driven drum 11 instead of the edge roller 13.
　図５は、本発明の第２の実施形態に係る風洞試験装置１′の概略側面図である。なお、第２の実施形態は、無端ベルトの蛇行を軽減するための機構を除いては上記に説明した第１の実施形態の構成と共通するため、第１の実施形態との相違を中心に説明する。また、第１の実施形態と同一又は対応する要素に対しては同一又は類似の符号を付して、詳細な説明を省略する。 FIG. 5 is a schematic side view of a wind tunnel testing apparatus 1 ′ according to the second embodiment of the present invention. Since the second embodiment is common to the configuration of the first embodiment described above except for the mechanism for reducing the meandering of the endless belt, the difference from the first embodiment is mainly described. explain. The same or corresponding elements as those in the first embodiment are denoted by the same or similar reference numerals, and detailed description thereof is omitted.
　本実施形態においては、図５に示されるように、従動ドラム１１を幅方向両端で支持する一対の軸受１８ａに、軸受１８ａの少なくとも一方を前後方向に移動するためのアクチュエータ１８ｂが接続されている。アクチュエータ１８ｂを駆動することによって、軸受１８ａの一方を前方に、及び／又は、他方を後方に移動させて、従動ドラム１１を水平面内で傾けることができるようになっている。なお、アクチュエータ１８ｂは、コントローラ３０によって制御される。 In this embodiment, as shown in FIG. 5, an actuator 18b for moving at least one of the bearings 18a in the front-rear direction is connected to a pair of bearings 18a that support the driven drum 11 at both ends in the width direction. . By driving the actuator 18b, one of the bearings 18a can be moved forward and / or the other can be moved backward, so that the driven drum 11 can be tilted in a horizontal plane. The actuator 18b is controlled by the controller 30.
　従動ドラム１１を傾けることによって、無端ベルト１４の幅方向への蛇行を修正することができる。すなわち、従動ドラム１１の幅方向左端が幅方向右端に対して後方に位置するように従動ドラム１１が傾けられると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも小さくなる。この結果、無端ベルト１４には、幅方向左側に向かう力が加わって幅方向左側に移動する。一方、従動ドラム１１の幅方向左端が幅方向右端に対して前方に位置するように従動ドラム１１を傾けると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも大きくなる。この結果、無端ベルト１４には、幅方向右側に向かう力が加わって幅方向右側に移動する。このように、従動ドラム１１を傾けることによって、無端ベルト１４を、幅方向に移動させることが可能となる。本実施形態のムービングベルト機構１０は、無端ベルト１４の蛇行（すなわち無端ベルト１４の幅方向の位置ずれ）を検知するための図示しない蛇行検知センサを有しており、コントローラ３０は、蛇行検知センサの検知結果に基づいて、蛇行が修正される方向に従動ドラム１１が傾けられるようアクチュエータ１８ｂを制御する。 By tilting the driven drum 11, the meandering of the endless belt 14 in the width direction can be corrected. That is, when the driven drum 11 is tilted so that the left end in the width direction of the driven drum 11 is located rearward with respect to the right end in the width direction, the tension applied to the endless belt 14 is smaller on the left side in the width direction than on the right side in the width direction. Become. As a result, the endless belt 14 is moved to the left side in the width direction by applying a force toward the left side in the width direction. On the other hand, when the driven drum 11 is tilted so that the left end in the width direction of the driven drum 11 is positioned forward with respect to the right end in the width direction, the tension applied to the endless belt 14 is greater on the left side in the width direction than on the right side in the width direction. . As a result, the endless belt 14 is moved to the right in the width direction by applying a force toward the right in the width direction. Thus, by tilting the driven drum 11, the endless belt 14 can be moved in the width direction. The moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 18b is controlled so that the driven drum 11 is tilted in the direction in which the meandering is corrected.
　なお、本実施形態においては、従動ドラム１１を傾けて無端ベルト１４の蛇行を修正する構成としているが、駆動ドラム１２を傾けて無端ベルト１４の蛇行を修正する構成としてもよい。 In the present embodiment, the driven drum 11 is tilted to correct the meandering of the endless belt 14, but the driving drum 12 may be tilted to correct the meandering of the endless belt 14.
　本実施形態においても、第１の実施形態と同様、無端ベルト１４の蛇行を修正するための機構によって、無端ベルト１４に反りや破壊が発生する可能性がある。そのため、本実施形態においても、第１の実施形態と同様、無端ベルト１４の内周面１４ｉに保護シート１７を貼り付けている。 In the present embodiment as well, similarly to the first embodiment, the endless belt 14 may be warped or broken by a mechanism for correcting the meandering of the endless belt 14. Therefore, also in this embodiment, the protective sheet 17 is affixed on the inner peripheral surface 14i of the endless belt 14 as in the first embodiment.
　以上説明した本発明の第１及び第２の実施形態においては、無端ベルト１４の蛇行を防止するためのエッジローラ１３（第１の実施形態）や従動ドラム１１（第２の実施形態）が、保護シート１７を介して無端ベルト１４の内周面１４ｉに当接している。しかしながら、本発明は上記の構成に限定されるものではない。次に説明する本発明の第３の実施形態は、エッジローラが無端ベルト１４の外周面に当接するものである。 In the first and second embodiments of the present invention described above, the edge roller 13 (first embodiment) and the driven drum 11 (second embodiment) for preventing the endless belt 14 from meandering are provided. It is in contact with the inner peripheral surface 14 i of the endless belt 14 via the protective sheet 17. However, the present invention is not limited to the above configuration. In a third embodiment of the present invention to be described next, the edge roller contacts the outer peripheral surface of the endless belt 14.
　図６は、本発明の第３の実施形態の風洞試験装置１″の概略側面図である。なお、風洞試験装置１″は、無端ベルトの蛇行を軽減するための機構を除いては上記に説明した第１の実施形態の構成と共通するため、第１の実施形態との相違を中心に説明する。また、第１の実施形態と同一の又は対応する要素に対しては同一又は類似の符号を付して、詳細な説明を省略する。 FIG. 6 is a schematic side view of a wind tunnel test apparatus 1 ″ according to a third embodiment of the present invention. The wind tunnel test apparatus 1 ″ is the above except for a mechanism for reducing the meandering of the endless belt. Since the configuration is the same as that of the first embodiment described above, differences from the first embodiment will be mainly described. The same or corresponding elements as those in the first embodiment are denoted by the same or similar reference numerals, and detailed description thereof is omitted.
　本実施形態において、無端ベルト１４の蛇行を修正するエッジローラ１３′は、無端ベルト１４の下部１４ｂにおいて、外周面１４ｏに当接し、無端ベルト１４に均一な張力を加えている。また、エッジローラ１３′は、その軸方向を幅方向に向けて配置されている。また、エッジローラ１３′を幅方向両端で支持する一対の軸受１５ａ′には、軸受１５ａ′の少なくとも一方を上下方向に移動するためのアクチュエータ１５ｂ′が接続されている。アクチュエータ１５ｂ′を駆動することによって、軸受１５ａ′の一方を上に、及び／又は、他方を下に移動させて、エッジローラ１３′を前後方向と垂直な面内で傾けることができるようになっている。なお、アクチュエータ１５ｂ′は、コントローラ３０によって制御される。 In this embodiment, the edge roller 13 ′ for correcting the meandering of the endless belt 14 abuts on the outer peripheral surface 14 o at the lower part 14 b of the endless belt 14 and applies a uniform tension to the endless belt 14. The edge roller 13 'is arranged with its axial direction facing the width direction. An actuator 15b 'for moving at least one of the bearings 15a' in the vertical direction is connected to the pair of bearings 15a 'that support the edge roller 13' at both ends in the width direction. By driving the actuator 15b ', the edge roller 13' can be tilted in a plane perpendicular to the front-rear direction by moving one of the bearings 15a 'up and / or down the other. ing. The actuator 15b ′ is controlled by the controller 30.
　本実施形態においては、エッジローラ１３′の幅方向左端が幅方向右端に対して上方に位置するようにエッジローラ１３′が傾けられると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも大きくなる。この結果、無端ベルト１４には、幅方向右側に向かう力が加わって幅方向右側に移動する。一方、エッジローラ１３′の幅方向左端が幅方向右端に対して下方に位置するようにエッジローラ１３′が傾けられると、無端ベルト１４に加わる張力は、幅方向左側の方が幅方向右側よりも小さくなる。この結果、無端ベルト１４には、幅方向左側に向かう力が加わって幅方向左側に移動する。このように、エッジローラ１３′を傾けることによって、無端ベルト１４を幅方向に移動させることが可能となる。本実施形態のムービングベルト機構１０は、無端ベルト１４の蛇行（すなわち無端ベルト１４の幅方向の位置ずれ）を検知するための図示しない蛇行検知センサを有しており、コントローラ３０は、蛇行検知センサの検知結果に基づいて、蛇行が修正される方向にエッジローラ１３′が傾けられるようアクチュエータ１５ｂ′を制御する。 In this embodiment, when the edge roller 13 'is tilted so that the left end in the width direction of the edge roller 13' is positioned above the right end in the width direction, the tension applied to the endless belt 14 is greater on the left side in the width direction. It becomes larger than the right side in the width direction. As a result, the endless belt 14 is moved to the right in the width direction by applying a force toward the right in the width direction. On the other hand, when the edge roller 13 'is tilted so that the left end in the width direction of the edge roller 13' is positioned below the right end in the width direction, the tension applied to the endless belt 14 is greater on the left side in the width direction than on the right side in the width direction. Becomes smaller. As a result, the endless belt 14 is moved to the left side in the width direction by applying a force toward the left side in the width direction. Thus, by tilting the edge roller 13 ', the endless belt 14 can be moved in the width direction. The moving belt mechanism 10 of this embodiment has a meandering detection sensor (not shown) for detecting meandering of the endless belt 14 (that is, positional deviation in the width direction of the endless belt 14). Based on the detection result, the actuator 15b 'is controlled so that the edge roller 13' is tilted in the direction in which the meandering is corrected.
　なお、上記構成においては、エッジローラ１３′が前後方向の軸周りに傾けられるよう制御されているが、本発明は上記の構成に限定されるものではない。すなわち、エッジローラ１３′が上下方向の軸周りに傾けられる（すなわち、アクチュエータ１５ｂ′が、軸受１５ａ′の少なくとも一方を前後方向に移動する）構成としてもよい。この場合、傾いたエッジローラ１３′の軸方向に大きな摩擦力が生じるため、この摩擦力によって無端ベルト１４が幅方向に移動する。 In the above configuration, the edge roller 13 'is controlled to be tilted around the axis in the front-rear direction, but the present invention is not limited to the above configuration. That is, the edge roller 13 ′ may be inclined around the vertical axis (that is, the actuator 15 b ′ moves at least one of the bearings 15 a ′ in the front-rear direction). In this case, since a large frictional force is generated in the axial direction of the inclined edge roller 13 ', the endless belt 14 is moved in the width direction by this frictional force.
　エッジローラ１３′が傾いていない（すなわち、エッジローラ１３′の回転軸が幅方向に一致している）状態では、エッジローラ１３′から無端ベルト１４に加える摩擦力の方向は前後方向前側に一致する。ここで、エッジローラ１３′の幅方向左端が幅方向右端に対して前方に位置するようにエッジローラ１３′が傾けられると、エッジローラ１３′の軸方向に発生する大きな摩擦力を受けて、無端ベルト１４が幅方向右側に移動する。一方、幅方向左側が幅方向右側に対して前後方向後側に位置するようにエッジローラ１３′が傾けられると、上記摩擦力の方向が幅方向左側に向かって傾けられ、無端ベルト１４が幅方向左側に移動する。 In a state where the edge roller 13 'is not inclined (that is, the rotation axis of the edge roller 13' coincides with the width direction), the direction of the frictional force applied from the edge roller 13 'to the endless belt 14 coincides with the front side in the front-rear direction. To do. Here, when the edge roller 13 'is tilted so that the left end in the width direction of the edge roller 13' is positioned forward with respect to the right end in the width direction, a large frictional force generated in the axial direction of the edge roller 13 'is received. The endless belt 14 moves to the right in the width direction. On the other hand, when the edge roller 13 ′ is tilted so that the left side in the width direction is positioned on the rear side in the front-rear direction with respect to the right side in the width direction, the direction of the frictional force is tilted toward the left side in the width direction. Move to the left in the direction.
　本実施形態においては、無端ベルト１４に反り等の変形が発生するのを防止するため、無端ベルト１４の内周面１４ｉに保護シート１７が、外周面１４ｏに保護シート１９が、夫々接着剤によって貼り付けられている。本実施形態においては、保護シート１９は、保護シート１７と同じ材料であり、厚さも保護シート１７と等しい。また、保護シート１９の幅方向寸法が無端ベルト１４の幅方向寸法Ｗに等しく、且つ、保護シート１９によって無端ベルト１４の外周面１４ｏが略全周に亙って覆われている。 In the present embodiment, in order to prevent the endless belt 14 from being deformed such as warping, a protective sheet 17 is provided on the inner peripheral surface 14i of the endless belt 14, and a protective sheet 19 is provided on the outer peripheral surface 14o. It is pasted. In the present embodiment, the protective sheet 19 is the same material as the protective sheet 17, and the thickness is also equal to the protective sheet 17. Further, the width direction dimension of the protective sheet 19 is equal to the width direction dimension W of the endless belt 14, and the outer peripheral surface 14 o of the endless belt 14 is covered by the protective sheet 19 over substantially the entire circumference.
　上記のように、本実施形態では、第１及び第２の実施形態とは異なり、無端ベルト１４の外周面１４ｏに、エッジローラ１３′との接触による傷が形成されないよう、外周面１４ｏが保護シート１９によって保護されている。このため、無端ベルト１４の外周面１４ｏに生じた傷を原因とする、無端ベルト１４の反りなどの変形が防止されるようになっている。 As described above, in the present embodiment, unlike the first and second embodiments, the outer peripheral surface 14o is protected so that the outer peripheral surface 14o of the endless belt 14 is not damaged by contact with the edge roller 13 '. It is protected by the sheet 19. For this reason, deformation such as warping of the endless belt 14 caused by scratches on the outer peripheral surface 14o of the endless belt 14 is prevented.
　なお、保護シート１９に求められる曲げ剛性は、無端ベルト１４の内周面１４ｉに設けられた保護シート１７に求められるものと同様である。すなわち、無端ベルト１４の曲げ剛性が保護シート１９に比べて十分に大きければよい。具体的には、無端ベルト１４の保護シート１９に対する曲げ剛性の比が１０以上であればよく、より好ましくは１００以上である。 The bending rigidity required for the protective sheet 19 is the same as that required for the protective sheet 17 provided on the inner peripheral surface 14 i of the endless belt 14. That is, it is sufficient that the bending rigidity of the endless belt 14 is sufficiently larger than that of the protective sheet 19. Specifically, the ratio of the bending rigidity of the endless belt 14 to the protective sheet 19 may be 10 or more, and more preferably 100 or more.
　以上が本発明の例示的な実施形態の説明である。本発明の実施形態の構成は、上記に説明したものに限定されず、請求の範囲の記載により表現された技術的思想の範囲内で任意に変更され得る。例えば、上記で説明した本発明の第１及び第２の実施形態においては、自動車Ｃを試験体としているが、本発明は上記の構成に限定されるものではない。すなわち、自動車以外の車両（例えば原動機を用いない車両や、自動車の空力特性評価用のモックアップモデル）、航空機、或いは車両の車輪やサスペンション単体を試験体とする試験装置に使用されるムービングベルト機構もまた、本発明の実施形態に係る走行試験装置用ムービングベルト機構に含まれる。 This completes the description of the exemplary embodiment of the present invention. The configuration of the embodiment of the present invention is not limited to that described above, and can be arbitrarily changed within the scope of the technical idea expressed by the description of the scope of claims. For example, in the first and second embodiments of the present invention described above, the automobile C is used as a test body, but the present invention is not limited to the above configuration. That is, a moving belt mechanism used in a vehicle other than a vehicle (for example, a vehicle that does not use a prime mover, a mock-up model for evaluating aerodynamic characteristics of a vehicle), an aircraft, or a test apparatus using a vehicle wheel or a suspension alone as a test body. Is also included in the moving belt mechanism for a running test apparatus according to an embodiment of the present invention.

Claims (16)

  1. 　一対のドラムと、前記一対のドラムに巻き掛けられた無端ベルトとを備え、無端ベルトの上に試験体が配置されるようになっている走行試験装置用ムービングベルト機構であって、
    　前記無端ベルトが巻き掛けられ、回転軸に垂直な軸周りに傾斜することによって該無端ベルトの蛇行を修正する蛇行修正ローラを備え、
    　前記無端ベルトの内周面には、略全周に亙って該内周面を保護するための内周側保護シートが設けられており、
    　前記無端ベルトは、前記内周側保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質的に変形しない程度の曲げ剛性を有する
    ことを特徴とする走行試験装置用ムービングベルト機構。     A traveling belt mechanism for a traveling test apparatus, comprising a pair of drums and an endless belt wound around the pair of drums, wherein a test body is arranged on the endless belt,
    A meandering correction roller for correcting the meandering of the endless belt by being wound around the endless belt and tilting about an axis perpendicular to the rotation axis;
    The inner peripheral surface of the endless belt is provided with an inner peripheral protective sheet for protecting the inner peripheral surface over substantially the entire periphery,
    The moving belt mechanism for a traveling test apparatus, wherein the endless belt has a bending rigidity that does not substantially deform due to a stress applied to warp the endless belt due to distortion of the inner peripheral protective sheet.
  2. 　前記無端ベルトの曲げ剛性が、前記内周側保護シートの曲げ剛性の１０倍以上であることを特徴とする請求項１に記載の走行試験装置用ムービングベルト機構。 2. The moving belt mechanism for a travel test apparatus according to claim 1, wherein the endless belt has a bending rigidity of 10 times or more of the bending rigidity of the inner peripheral protective sheet.
  3. 　前記無端ベルトの曲げ剛性が、前記内周側保護シートの曲げ剛性の１００倍以上であることを特徴とする請求項２に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a traveling test apparatus according to claim 2, wherein the bending rigidity of the endless belt is 100 times or more of the bending rigidity of the inner peripheral protective sheet.
  4. 　前記内周側保護シートの縦弾性係数が、０．０２［ＧＰａ］以上であることを特徴とする請求項１から請求項３のいずれか一項に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to any one of claims 1 to 3, wherein a longitudinal elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more.
  5. 　前記内周側保護シートの縦弾性係数が、０．１［ＧＰａ］以上であることを特徴とする請求項４に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to claim 4, wherein the longitudinal elastic modulus of the inner peripheral protective sheet is 0.1 [GPa] or more.
  6. 　前記内周側保護シートの横弾性係数が、０．０１［ＧＰａ］以上であることを特徴とする請求項１から請求項５のいずれか一項に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to any one of claims 1 to 5, wherein the inner peripheral protective sheet has a lateral elastic modulus of 0.01 [GPa] or more.
  7. 　前記内周側保護シートの横弾性係数が、０．０２［ＧＰａ］以上であることを特徴とする請求項６に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to claim 6, wherein a transverse elastic modulus of the inner peripheral protective sheet is 0.02 [GPa] or more.
  8. 　前記蛇行修正ローラが、前記一対のドラムとは別個に設けられ且つ前記無端ベルトに当接するエッジローラであることを特徴とする請求項１から請求項７のいずれか一項に記載の走行試験装置用ムービングベルト機構。 The running test apparatus according to any one of claims 1 to 7, wherein the meandering correction roller is an edge roller that is provided separately from the pair of drums and is in contact with the endless belt. For moving belt mechanism.
  9. 　前記エッジローラの一端が上下方向に移動するよう駆動されて該エッジローラが傾斜することを特徴とする請求項８に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a traveling test apparatus according to claim 8, wherein the edge roller is inclined by being driven so that one end of the edge roller moves in the vertical direction.
  10. 　前記エッジローラの一端が進行方向に移動するよう駆動されて該エッジローラが傾斜することを特徴とする請求項８に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to claim 8, wherein the edge roller is tilted by being driven so that one end of the edge roller moves in the traveling direction.
  11. 　前記エッジローラが、前記無端ベルトの内周面に前記内周側保護シートを介して当接していることを特徴とする請求項８から請求項１０のいずれか一項に記載の走行試験装置用ムービングベルト機構。 11. The traveling test apparatus according to claim 8, wherein the edge roller is in contact with an inner peripheral surface of the endless belt via the inner peripheral protective sheet. Moving belt mechanism.
  12. 　前記無端ベルトの外周面には、略全周に亙って該外周面を保護するための外周側保護シートが設けられており、
    　前記エッジローラが、前記無端ベルトの外周面に前記外周側保護シートを介して当接し、
    　前記無端ベルトは、前記外周側保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質変形しない程度の曲げ剛性を有する
    ことを特徴とする請求項８から請求項１０のいずれか一項に記載の走行試験装置用ムービングベルト機構。     The outer peripheral surface of the endless belt is provided with an outer peripheral protection sheet for protecting the outer peripheral surface over substantially the entire circumference.
    The edge roller is in contact with the outer peripheral surface of the endless belt via the outer peripheral protective sheet;
    11. The endless belt has bending rigidity to such an extent that the endless belt is not substantially deformed by a stress applied to warp the endless belt due to distortion of the outer peripheral protection sheet. A moving belt mechanism for a running test apparatus as described in 1.
  13. 　前記外周側保護シートが接着によって前記無端ベルトの外周面に貼り付けられることを特徴とする請求項１２に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to claim 12, wherein the outer peripheral side protection sheet is attached to the outer peripheral surface of the endless belt by adhesion.
  14. 　前記蛇行修正ローラが、前記一対のドラムのいずれか一方であり、
    　前記蛇行修正ローラの一端が前記試験体の進行方向に移動するよう駆動されて該蛇行修正ローラが傾斜する
    ことを特徴とする請求項１から請求項７のいずれか一項に記載の走行試験装置用ムービングベルト機構。     The meandering correction roller is one of the pair of drums;
    The running test apparatus according to any one of claims 1 to 7, wherein one end of the meandering correction roller is driven to move in a traveling direction of the test body, and the meandering correction roller is inclined. For moving belt mechanism.
  15. 　前記内周側保護シートが接着によって前記無端ベルトの内周面に貼り付けられることを特徴とする請求項１から請求項１４のいずれか一項に記載の走行試験装置用ムービングベルト機構。 The moving belt mechanism for a travel test apparatus according to any one of claims 1 to 14, wherein the inner peripheral protection sheet is attached to an inner peripheral surface of the endless belt by adhesion.
  16. 　鋼製の無端ベルトであって、その内周面には、略全周に亙って該内周面を保護するための内周側保護シートが設けられており、該内周側保護シートのひずみにより該無端ベルトを反らせるように加えられる応力によって実質変形しない程度の曲げ剛性を有することを特徴とする無端ベルト。 An endless belt made of steel, the inner peripheral surface of which is provided with an inner peripheral side protective sheet for protecting the inner peripheral surface over substantially the entire circumference. An endless belt having a bending rigidity that does not substantially deform due to stress applied to warp the endless belt due to strain.
PCT/JP2010/071685 2009-12-07 2010-12-03 Moving belt mechanism for travelling test device, and endless belt WO2011070977A1 (en)

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