TWI494555B - Moving belt mechanism and endless belt for running test equipment - Google Patents

Description

Conveyor belt mechanism and seamless belt for running test equipment

The present invention relates to a conveyor belt mechanism and a seamless belt for operation test equipment such as a wind tunnel test device.

In order to evaluate the running performance or aerodynamic performance of a test body such as an automobile, an operation test apparatus having a conveyor belt mechanism is used as described in JP2007-101410A (Japanese Patent Laid-Open Publication). This operation test apparatus is provided with a conveyor belt mechanism in which a seamless belt made of steel is wound around a pair of rollers composed of a drive roller and a driven roller. The test body wheel is carried on the conveyor belt mechanism, and by rotating the seamless belt, the seamless belt is used as a simulated road surface operation, and a test environment equivalent to the operation test for running the test body on the actual road surface is realized on the operation test equipment.

In such a conveying belt mechanism, the bending deformation of the center portion on the outer peripheral side of the belt at the both end portions in the width direction of the seamless belt occurs in a relatively short time, and the life of the seamless belt becomes short.

In view of the above circumstances, the present invention provides a conveyor belt mechanism and a seamless belt for operating a test apparatus, which are less likely to be deformed by bending or the like in a seamless belt, and to achieve longevity of the seamless belt.

A conveyor belt mechanism for operating a test apparatus according to an embodiment of the present invention includes: a meandering correction roller that winds a seamless belt, and corrects the serpentine of the seamless belt by tilting around a vertical axis of the rotary shaft, wherein The inner peripheral surface of the belt is provided with an inner peripheral side protective thin layer, and the inner peripheral side protective thin layer is used to protect the inner peripheral surface over approximately the entire circumference, and the seamless belt has a degree of substantial deformation without being applied by the applied stress. Flexural rigidity, the applied stress causes the seamless belt to bend due to the distortion of the inner peripheral side protective sheet.

The inventor of the present invention, through a lot of experimental and technical results, found that the damage of the inner peripheral surface of the seamless belt caused by the contact of the roller or the snake correction roller and the seamless belt was expanded by the meandering correction roller to cause a seamless belt. Deformation. According to the configuration of the embodiment of the present invention described above, since the inner circumference of the seamless belt is protected by the inner peripheral side protective sheet, the inner peripheral surface of the seamless belt is not damaged. In addition, since the seamless belt has a bending rigidity that does not substantially deform the seamless belt due to the stress of the inner peripheral side protective film, even if the inner peripheral side protective sheet is deformed, the seamless belt does not bend or the like. Deformation.

Moreover, the bending rigidity of the seamless belt is 10 times or more of the bending rigidity of the inner peripheral side protective sheet. More preferably, the bending rigidity of the seamless belt is 100 times or more the bending rigidity of the inner peripheral side protective sheet.

Further, the longitudinal elastic modulus of the inner peripheral side protective sheet layer is 0.02 (GPa) or more. More preferably, the longitudinal elastic modulus of the inner peripheral side protective layer is 0.1 (GPa) or more.

Further, the transverse elastic modulus of the inner peripheral side protective sheet layer is 0.01 (GPa) or more. More preferably, the transverse elastic modulus of the inner peripheral side protective layer is 0.02 (GPa) or more.

The protective thin layer having the longitudinal elastic modulus and the transverse elastic modulus of the above-described size has sufficiently high rigidity with respect to the compression load in the thickness direction and the cutting load along the plane direction. The inner peripheral side protects the thin layer from being caught between the drum and the seamless belt, and is subjected to the compression load and the cut-off load in the above direction, but since the inner peripheral side protective thin layer is loaded against these compression and cut-off, it is regarded as a de facto rigid body. Therefore, based on the elasticity of the inner peripheral side protective sheet, vibrations that affect the test performance of the running test equipment are not generated in the seamless belt.

Further, the meandering correction roller and the pair of rollers may be separately provided and abutted against the edge roller of the seamless belt. For example, one end of the edge roller is driven upward to move it toward the lower side, and the edge roller is inclined. Alternatively, one end of the edge roller is driven in order to move toward the test body, and the other end is driven to move in the backward direction of the test body to tilt the edge roller.

Further, the edge roller may be configured to be in contact with the outer peripheral surface of the seamless belt via the inner peripheral side protective sheet.

Alternatively, the outer peripheral surface of the seamless belt may be formed on the outer belt side, and the outer peripheral side protective sheet may be provided to protect the outer peripheral surface over approximately the entire circumference; the edge roller is shielded by the outer peripheral side protective layer And abutting against the outer peripheral surface of the seamless belt; the seamless belt has a bending rigidity which is not substantially deformed by the applied stress, and the applied stress causes the seamless belt to be bent due to the distortion of the outer peripheral side protective sheet . In this case, the outer peripheral side protective sheet may be attached to the outer peripheral surface of the seamless belt by gluing.

Alternatively, the meandering correction roller is one of the pair of rollers, and one end of the meandering correction roller is driven to move toward the test body in the backward direction of the test body, so that the meandering correction roller is driven. tilt.

Moreover, the inner peripheral side protective sheet may be attached to the inner peripheral surface of the seamless belt by, for example, gluing.

Further, the steel seamless belt according to the embodiment of the present invention is provided with an inner peripheral side protective sheet on the inner peripheral surface thereof, and the inner peripheral side protective sheet is used to protect the inner peripheral surface over approximately the entire circumference, and further The seamless belt is not bent to be substantially deformed by the applied stress, and the applied stress causes the seamless belt to bend due to the distortion of the inner peripheral side protective sheet.

Embodiments of the present invention will be described below with reference to the drawings. The first figure is a schematic side view of the wind tunnel testing device 1 according to the first embodiment of the present invention. The wind tunnel testing device 1 includes a conveyor belt mechanism 10 that operates as a simulated road surface on which the automobile C is placed, a wind supply unit 20 that blows wind from the front (left side in the drawing) to the automobile C, and a controller 30 that controls the wind tunnel test. Each part of the device 1 operates.

Further, in the following description, the car C is the right side to the left side of the first figure arranged on the horizontal simulation road surface 14a, and each direction is defined based on the running direction of the car C. That is, the left side in the first figure is defined as the front side in the front-rear direction, the right side in the first figure is defined as the rear side in the front-rear direction, the back side of the paper is defined as the right side in the width direction, and the side of the paper sheet is defined as the left side in the width direction.

The conveyance belt mechanism 10 includes a driven roller 11 and a drive roller 12 that are arranged in the front-rear direction, and an edge roller 13 that is disposed between the driven roller 11 and the drive roller 12. Further, the seamless belt 14 is wound around the driven roller 11, the driving roller 12, and the edge roller 13.

The driven roller 11 and the drive roller 12 are disposed in the wide direction of the rotation axis. Therefore, when the drive roller 12 is rotated clockwise in the drawing, the upper portion 14a of the seamless belt 14 is moved from the front side to the rear side in the front-rear direction, and the seamless belt 14 is on the driven roller 11, the drive roller 12, and the edge roller 13. Rotate around. Then, with the above-described rotation of the seamless belt 14 by the frictional force between the seamless belt 14 and the driven roller 11 and the edge roller 13, the driven roller 11 and the edge roller 13 are rotated clockwise in the drawing.

The drive roller 12 is provided with a servo motor 16 for rotationally driving the drive roller 12. The servo motor 16 is a motor that can precisely control the rotational speed, and can drive the drive roller 12 to rotate at the desired rotational speed. That is, in the present embodiment, the seamless belt can be rotated at a desired peripheral speed. Further, the rotation and the stop of the servo motor 16 and the number of revolutions are controlled by the controller 30.

Next, the wind supply unit 20 will be described. The air supply unit 20 includes an air duct 21 and a blower fan 22. The air inlet 21a of the air duct 21 is disposed on the rear side (the right side in the drawing) of the vehicle C in the front-rear direction, and the air outlet 21b is disposed on the front side (the left side in the drawing) of the vehicle C in the front-rear direction. The blower fan 22 is disposed inside the air duct 21 to drive the blower fan 22, and air is taken in from the air inlet 21a of the air duct 21, and air can be blown from the air outlet 21b to the car C.

The blower fan 22 is driven by the inverter motor 23. The inverter motor 23 is The motor can precisely control the speed, and the wind speed of the wind sent to the car C can be precisely controlled. Further, the rotation and stop of the inverter motor 23 and the number of revolutions are controlled by the controller 30.

As described above, in the present embodiment, the seamless belt 14 that simulates the road surface is rotated at a desired peripheral speed, and the wind of the desired wind speed is sent from the front of the automobile C, thereby the same environment as when the automobile C is operating outside the house. Reproduce in the state where the car C is stationary.

The edge roller 13 is disposed in the width direction of the rotation axis. Further, the edge roller 13 abuts against the inner peripheral surface 14i at the lower portion 14b of the seamless belt 14, and applies uniform tension to the seamless belt 14. Further, the pair of bearings 15a of the edge roller 13 are supported at both ends in the width direction, and the actuator 15b is connected, and the actuator 15b is used to move at least one of the bearings 15a in the vertical direction. By driving the actuator 15b to move one of the bearings 15a upward and/or downward, the edge roller 13 can be inclined in the vertical plane in the front-rear direction. Further, the actuator 15b is controlled by the controller 30.

The edge roller 13 is used to correct the meandering of the seamless belt 14 in the width direction. When the edge roller 13 is inclined such that the left side in the width direction of the edge roller 13 is located on the upper side in the width direction and the right side, the tension applied to the seamless belt 14 becomes that the tension on the left side in the width direction is smaller than the tension on the right side in the width direction. As a result, a force to the left in the width direction is applied to the seamless belt 14, and the seamless belt 14 is moved to the left in the width direction. On the other hand, when the edge roller 13 is inclined to the left side in the width direction of the edge roller 13, and to the lower side in the width direction right side, the tension applied to the seamless belt 14 becomes the tension on the left side in the width direction is larger than the width direction on the right side in the width direction. tension. As a result, a force to the right side in the width direction is applied to the seamless belt 14, and the seamless belt 14 is moved to the right side in the width direction. Thus, by tilting the edge roller 13, it becomes possible to move the seamless belt 14 in the width direction. The conveying belt mechanism 10 of the present embodiment has a meandering detecting sensor (not shown) for detecting the meandering of the seamless belt 14 (i.e., the positional deviation of the seamless belt 14 in the width direction), and the controller 30 detects the sensor based on the meandering detecting sensor. As a result, the actuator 15b is controlled such that the edge roller 13 is inclined in the direction in which the meandering is corrected.

Further, in the above configuration, the edge roller 13 is controlled so as to be inclined 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. That is to say, the edge roller 13 may be inclined around the axis in the up-and-down direction (that is, the actuator 15b moves at least one of the bearings 15a in the front-rear direction to incline the edge roller 13 in the horizontal plane). In this case, since the large frictional force is generated in the axial direction of the inclined edge roller 13, the belt 14 is moved in the width direction by the frictional force.

In a state where the edge roller 13 is not inclined (that is, the rotation axis of the edge roller 13 is uniform in the width direction), the frictional force is applied from the edge roller 13 to the direction of the seamless belt 14, and the front side in the front-rear direction is uniform. Here, when the edge roller 13 is inclined such that the left end of the edge roller 13 in the width direction is located forward with respect to the right end in the width direction, the large friction force generated in the axial direction of the edge roller 13 is received, and the seamless belt 14 is moved to the right side in the width direction. On the other hand, when the edge roller 13 is inclined such that the left end in the width direction of the edge roller 13 is located rearward with respect to the right end in the width direction, the seamless belt 14 moves to the left in the width direction.

In the present embodiment, in order to prevent deformation such as bending of the seamless belt 14, the protective sheet layer 17 is attached to the inner peripheral surface 14i of the seamless belt 14. The structure of the protective thin layer 17 will be described below.

The second figure is an enlarged side view of the seamless belt 14 and the protective sheet 17 in the vicinity of the drive roller 12. As shown in the second figure, on the inner peripheral surface 14i of the seamless belt, the protective sheet 17 is attached over approximately the entire circumference. On one side of the protective sheet layer 17, a bonding layer 17a is formed to be contained in the bonding layer 17a, and the protective sheet layer 17 is adhesively fixed to the inner peripheral surface 14i of the seamless belt 14.

The seamless belt 14 is a steel strip of martensite stainless steel having a thickness t _{B of} about 0.6 mm. Further, the longitudinal elastic modulus E _B of the seamless belt 14 is about 230 GPa. The protective sheet body 17b of the protective sheet 17 of the seamless belt 14 is formed of a resin material. The thickness t _{S of the} protective sheet body 17b is about 0.8 to 1.2 mm. Further, the longitudinal elastic modulus E _S of the protective sheet body 17b is about 0.1 to 0.2 GPa. When the distance between the shafts of the driven roller 11 and the driving roller 12 is L, the bending rigidity B _B and B _{S of} the seamless belt 14 and the protective thin layer 17 with respect to the width direction are respectively expressed by the formulas (1) and (2). )To represent.

The longitudinal elastic modulus ratio (E _B /E _S ) of the seamless belt 14 to the protective thin layer 17 is about 1150 to 2300, and the thickness ratio (t _B /t _S ) is about 0.5 to 0.75, so the seamless belt 14 is thin for protection. The layer 17 has a bending rigidity ratio (B _B /B _S ) of about 143 to 971.

In the present embodiment, the inner circumferential surface 14i of the seamless belt 14 is protected by the protective thin layer 17, and the driven roller 11, the driving roller 12 or the edge roller 13 is not in direct contact with the seamless belt 14, and is not in the The inner peripheral surface 14i is injurious. Therefore, in the configuration of the present embodiment, the damage of the inner peripheral surface of the seamless belt 14 is expanded, and the occurrence of bending or breakage of the seamless belt 14 is less likely to occur. As a result, the life of the seamless belt 14 becomes long.

Further, in the present embodiment, the edge roller 13 and the protective thin layer 17 contact the inner peripheral surface 17c of the protective layer 17 to cause damage along the conveying direction of the seamless belt 14, so that the edge roller 13 is inclined. The action enlarges the damage of the protective thin layer 17, and there is a possibility that the protective thin layer 17 is bent. However, as described above, since the bending rigidity B _{B of the} seamless belt 14 is sufficiently larger than the bending rigidity B _{S of the} protective sheet 17, even if the damage of the protective sheet 17 is enlarged, no bending occurs in the seamless belt 14.

The compression load in the thickness direction of the protective sheet layer 17 is applied to the driven roller 11 of the protective sheet layer 17 and the portion between the drive roller 12 and the seamless belt 14 that is caught. Further, with the frictional force between the rotating drive roller 12 and the seamless belt 14 and the protective sheet 17, the protective thin layer 17 is applied with a cut-off load along the surface direction thereof. Since the protective sheet 17 is an elastic body, the portion between the drum protecting the thin layer 17 and the seamless belt 14 is operated as a spring. When the elastic modulus of the protective thin layer 17 becomes small, the amount of deformation of the protective thin layer 17 which is held between the drum and the seamless belt 14 becomes large, and there is a possibility of occurrence of large vibration in the rotating seamless belt 14. . That is to say, the protective thin layer 17 preferably has a longitudinal elastic modulus and a transverse elastic modulus, and the protective thin layer 17 can be sufficiently regarded as a rigid body (ie, can be ignored) for the compressive load applied to the protective thin layer 17 or the cut-off load. The vibration of the seamless belt 14 caused by the deformation of the protective sheet 17 or the seamless belt 14 that drives the operation of the drum 12 follows the delay).

In the present embodiment, the longitudinal elastic modulus E _S of the protective thin layer 17 is 0.1 to 0.2 GPa, and the transverse elastic modulus G _S of the protective thin layer 17 is 0.035 to 0.07 GPa. The size of E _S and G _S is the compression load or the cut-off load applied to the protective thin layer 17, and the protective thin layer 17 can be sufficiently regarded as the size of the rigid body.

Further, in the present embodiment, the ratio (B _B /B _S ) of the bending rigidity of the seamless belt 14 to the protective sheet 17 is 143 to 971, but the present invention is not limited to the above configuration. That is to say, the bending rigidity of the seamless belt 14 can also be sufficiently larger than the protective thin layer 17. Specifically, the bending rigidity ratio of the seamless belt 14 to the protective thin layer 17 may be 10 or more, more preferably 100 or more.

Further, in the present embodiment, the protective thin layer 17 has a longitudinal elastic modulus E _S of 0.1 to 0.2 GPa and a transverse elastic modulus G _S of 0.035 to 0.07 GPa. However, the present invention is not limited to the above configuration. That is, the longitudinal elastic modulus and the transverse elastic modulus of the protective thin layer 17 may be such that the protective thin layer 17 can be sufficiently regarded as a rigid body for the compression load applied to the protective thin layer 17 or the cutoff load. Specifically, the longitudinal elastic modulus of the protective thin layer 17 may be 0.02 GPa or more, and more preferably 0.1 GPa or more. Further, the transverse elastic modulus of the protective thin layer 17 may be 0.01 GPa or more, and more preferably 0.02 GPa or more.

Next, a mounting step regarding the protective thin layer 17 to the seamless belt 14 will be described. The third figure shows a protective thin layer 17 attached to the front of the seamless belt 14, and the fourth figure is a part of a developed view of the inner peripheral surface 14i of the seamless belt 14 to which the protective thin layer 17 is attached. As shown in the third figure, the protective thin layer 17 is attached to the front of the seamless belt 14, and the thin layer 17 is protected. The long side 17L has a size L _S of 1000 to 2000 mm, and the width (interval between the long sides) W _S is cut. It is a parallelogram shape slightly larger than the width direction dimension W of the seamless belt 14. Further, the angle θ formed between the long side 17L and the short side 17S of the protective thin layer 17 is about 45°.

Next, a plurality of protective thin layers 17 are attached to the seamless belt in such a manner that their long sides are parallel to the edge portion 14e of the seamless belt 14, and the protective sheet 17 is beyond the edge portion 14e of the seamless belt 14. The inner peripheral surface 14i of 14. Further, the protective thin layer 17 presses the surface of the protective thin layer 17 with a hand roller or the like, and prevents air from entering between the seamless belt 14 and attached. Further, the two adjacent protective thin layers 17 are attached so as to be spaced apart by a minute interval d in the circumferential direction of the seamless belt 14 (the horizontal direction in the drawing). In the present embodiment, the interval d is about 1 mm, that is, a size slightly equal to the thickness of the protective thin layer 17.

Next, the portion of the protective sheet 17 that is beyond the edge 14e of the seamless belt 14 is cut by a cutter. Next, the surface of the protective sheet 17 is tapped with a hammer or the like to surely adhere the bonding layer 17a (second drawing) of the protective sheet 17 to the seamless belt 14.

With the above steps, the attachment of the protective sheet 17 to the seamless belt 14 is completed. Further, the size of the long side 17L of the protective sheet 17 or the number of sheets of the protective sheet 17 attached to one seamless belt 14 is appropriately selected in accordance with the circumference of the seamless belt 14.

Next, a specific embodiment of the first embodiment of the present invention will be described. The seamless belt 14 of the present embodiment is a steel strip of martensitic stainless steel having a width of 500 mm, a circumference of 8,500 mm, and a thickness of 0.6 mm. Further, the driven roller 11 and the driving roller 12 have a diameter of 550 mm, and the edge roller 13 has a diameter of 300 mm. Further, the protective thin layer 17 has a thickness of about 1 mm, a longitudinal elastic modulus of 0.18 GPa, and a transverse elastic modulus of 0.06 GPa. The seamless belt 14 is wound around the driven roller 11, the driving roller 12, and the edge roller 13 under the condition that the tension is 200 kN. Further, on the inner circumferential surface 14i of the seamless belt 14, five parallel-shaped protective thin layers 17 are attached.

The conveyor belt mechanism 10 of the above configuration was driven at a peripheral speed of the seamless belt 14 of 55 m/s. Further, as a comparative example, the flat layer of the structure of the driven roller 11, the drive roller 12, and the edge roller 13 is not attached to the seamless belt 14, and the peripheral speed is the same as that of the embodiment. To drive.

In the comparative example, the conveying belt mechanism 10 was continuously driven for ten hours, and bending was observed at both end portions in the width direction of the seamless belt 14. The size of the bending (the displacement of both end portions in the width direction of the seamless belt 14 in the strip thickness direction at the center portion in the width direction) was 3 mm. In this regard, in the embodiment, even if the conveying belt mechanism 10 is continuously driven for one hundred hours, the bending of the seamless belt 14 is not seen.

The wind tunnel testing device 1 according to the first embodiment of the present invention described above corrects the meandering of the seamless belt 14 by inclining the edge roller 13. However, the present invention is not limited to the above configuration. Next, a second embodiment of the present invention will be described. In place of the edge roller 13, the meandering drum 11 is tilted to reduce the meandering of the seamless belt 14.

Fig. 5 is a schematic side view showing a wind tunnel testing device 1' according to a second embodiment of the present invention. Further, the second embodiment is not limited to the configuration of the first embodiment described above except for the mechanism for reducing the meandering of the seamless belt, and therefore will be described focusing on the first embodiment. It is to be noted that the same or similar reference numerals are given to the elements that are the same or corresponding to the first embodiment, and the detailed description is omitted.

In the present embodiment, as shown in Fig. 5, the pair of bearings 18a of the driven roller 11 are supported at both ends in the width direction, and the actuator 18b is connected, and the actuator 18b is used to move at least one of the bearings 18a forward and backward. Move in direction. By driving the actuator 18b to move one of the bearings 18a forward and/or the other to move rearward, the driven roller 11 can be tilted in the horizontal plane. Further, the actuator 18b is controlled by the controller 30.

By tilting the driven roller 11, it is possible to correct the meandering of the seamless belt 14 in the width direction. That is, the driven roller 11 is inclined such that the left end of the driven roller 11 in the width direction is located rearward with respect to the right end in the width direction, and the tension applied to the seamless belt 14 is less than the width of the left side in the width direction. tension. As a result, in the seamless belt 14, the force to the left side in the width direction is applied, and the force is moved to the left side in the width direction. On the other hand, when the driven roller 11 is inclined such that the left end of the driven roller 11 in the width direction is located forward with respect to the right end in the width direction, the tension applied to the seamless belt 14 is greater in the width direction on the left side than in the width direction. . As a result, in the seamless belt 14, a force to the right in the width direction is applied, and the force is moved to the right side in the width direction. Thus, by tilting the driven roller 11, the seamless belt 14 can be moved in the width direction. The conveying belt mechanism 10 of the present embodiment has a meandering detecting sensor for detecting the meandering of the seamless belt 14 (i.e., the positional deviation of the seamless belt 14 in the width direction), and the controller 30 is based on the meandering detecting sensor. As a result of the detection, the actuator 18b is controlled such that the driven roller 11 is inclined toward the correction meandering direction.

Further, in the present embodiment, the driven roller 11 is inclined to correct the meandering of the seamless belt 14, but the drive roller 12 may be inclined to correct the seamless belt 14 to meander.

In the present embodiment, as in the first embodiment, there is a mechanism for correcting the meandering of the seamless belt 14, so that the seamless belt 14 may be bent or broken. Thus, in the present embodiment, the protective thin layer 17 is attached to the inner circumferential surface 14i of the seamless belt 14 as in the first embodiment.

In the first and second embodiments of the present invention described above, the edge roller 13 (first embodiment) or the driven roller 11 (second embodiment) for preventing the meandering of the seamless belt 14 is separated by a protective film. The layer 17 abuts against the inner circumferential surface 14i of the seamless belt 14. However, the present invention is not limited to the above configuration. Next, a third embodiment of the present invention will be described in which the edge roller abuts on the outer circumferential surface of the seamless belt 14.

Figure 6 is a schematic side view of a wind tunnel testing device 1" according to a third embodiment of the present invention. Further, the wind tunnel testing device 1" is other than the first embodiment described above for reducing the mechanism of the seamless belt snake. The configurations of the morphologies are common, and therefore will be described centering on the first embodiment. It is to be noted that the same or similar reference numerals are given to the elements that are the same or corresponding to the first embodiment, and the detailed description is omitted.

In the present embodiment, the meandering edge roller 13' of the seamless belt 14 is corrected, and the lower portion 14b of the seamless belt 14 abuts against the outer peripheral surface 14o, and a uniform tension is applied to the seamless belt 14. Further, the edge roller 13' has its axial direction arranged in the width direction. Further, the pair of bearings 15a' of the edge roller 13' are supported at both ends in the width direction, the actuator 15b' is connected, and the actuator 15b' is used to move at least one of the bearings 15a' in the up and down direction. By driving the actuator 15b' to move one of the bearings 15a' up, and/or the other to move downward, the edge roller 13' can be tilted in a plane perpendicular to the front-rear direction. Further, the actuator 15b' is controlled by the controller 30.

In the present embodiment, when the edge roller 13' is inclined such that the left end of the edge roller 13' in the width direction is positioned above the right end in the width direction, the tension applied to the seamless belt 14, the tension on the left side in the width direction is larger than the width direction. The tension on the right side. As a result, the seamless belt 14 is applied to the right side in the width direction and moved to the right side in the width direction. On the other hand, when the edge roller 13' is inclined such that the left end of the edge roller 13' in the width direction is located below the right end with respect to the width direction, the tension applied to the seamless belt 14, the tension on the left side in the width direction is smaller than the width direction on the right side. The tension. Thus, the seamless belt 14 can be moved in the width direction by the inclined edge roller 13'. The conveying belt mechanism 10 of the present embodiment has a meandering detecting sensor for detecting the meandering of the seamless belt 14 (i.e., the positional deviation of the seamless belt 14 in the width direction), and the controller 30 is based on the meandering detecting sensor. As a result of the detection, the actuator 15b' is controlled such that the edge roller 13' is inclined toward the correction meandering direction.

Further, in the above configuration, the edge roller 13' is controlled to be inclined 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 configured to be inclined around the axis in the up and down direction (that is, the actuator 15b' moves at least one of the bearings 15a' 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 seamless belt 14 is moved in the width direction by the frictional force.

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 frictional force direction applied from the edge roller 13' to the seamless belt 14 coincides with the front side in the front-rear direction. Here, when the edge roller 13' is inclined such that the left side in the width direction of the edge roller 13' is located forward with respect to the right side in the width direction, the large friction force generated in the axial direction of the edge roller 13' is received, and the seamless belt 14 is widened. Move to the right of the direction. On the other hand, when the edge roller 13' is inclined such that the left side in the width direction of the edge roller 13' is the rear side in the front-rear direction with respect to the right side in the width direction, the above-mentioned frictional force direction is inclined to the left side in the width direction, and the seamless belt 14 is turned toward Move to the left in the width direction.

In the present embodiment, in order to prevent deformation such as bending of the seamless belt 14, the protective thin layer 17 is attached to the inner peripheral surface 14i of the seamless belt 14 by a bonding agent, and the protective thin layer 19 is attached to the outer peripheral surface 14o. . In the present embodiment, the protective thin layer 17 and the protective thin layer 19 are made of the same material and have the same thickness. Further, the width dimension of the protective sheet 19 is equal to the width dimension W of the seamless belt 14, and the outer peripheral surface 14o of the seamless belt 14 is covered by the protective sheet 19 to the entire circumference.

As described above, in the present embodiment, unlike the first and second embodiments, the outer peripheral surface 14o of the seamless belt 14 is not formed to be damaged by the contact of the edge roller 13', but is protected by a thin layer. 19 protects the outer peripheral surface 14o. Therefore, the damage generated on the outer peripheral surface 14o of the seamless belt 14 is prevented from causing deformation such as bending of the seamless belt 14.

Further, the bending rigidity required for the protective sheet 19 is the same as that of the protective sheet 17 provided on the inner peripheral surface 14i of the seamless belt 14. That is to say, the bending rigidity of the seamless belt 14 is sufficiently larger than the protective thin layer 19. Specifically, the ratio of the bending rigidity of the seamless belt 14 to the protective sheet 19 is preferably 10 or more, and more preferably 100 or more.

The above is illustrative of the embodiments of the invention. The configuration of the embodiment of the present invention is not limited to the above description, and can be arbitrarily changed within the scope of the technical idea expressed by the description of the patent application. For example, in the first and second embodiments of the present invention described above, the automobile C is used as the test body, but the present invention is not limited to the above configuration. That is, a vehicle other than a car (for example, a vehicle that does not use a prime mover or a mock-up model that evaluates the aerodynamic characteristics of the car), an airplane, or a wheel or a suspension unit of the vehicle is used as The conveyor belt mechanism used in the test apparatus of the test body is also included in the conveyor belt mechanism for operating the test equipment according to the embodiment of the present invention.

1, 1', 1"‧‧‧ wind tunnel test device

10‧‧‧Conveyor belt mechanism

11‧‧‧ driven roller

12‧‧‧ drive roller

13, 13'‧‧‧ edge roller

14‧‧‧Seamless belt

14a‧‧‧simulated road surface

14b‧‧‧ lower

14e‧‧‧Edge

14i‧‧‧ inner circumference

14o‧‧‧ outer perimeter

15a, 15a'‧‧‧ bearing

15b, 15b'‧‧‧ actuator

16‧‧‧Servo motor

17‧‧‧Protective thin layer

17a‧‧‧ glue layer

17b‧‧‧Protecting thin layer ontology

17L‧‧‧Longside

17S‧‧‧ Short side

18a‧‧‧ bearing

18b‧‧‧Actuator

19‧‧‧Protective thin layer

20‧‧‧Wind Supply Department

21‧‧‧Air duct

21a‧‧ Air inlet

21b‧‧‧Air outlet

22‧‧‧Air supply fan

23‧‧‧Frequency motor

30‧‧‧ Controller

D‧‧‧ interval

C‧‧‧Car

L _S ‧‧‧ size

W, W _S ‧ ‧ wide

First Fig. is a schematic side view of a wind tunnel testing device according to a first embodiment of the present invention.

Fig. 2 is a schematic enlarged side view showing a seamless belt and a protective sheet in the vicinity of a driving roller according to the first embodiment of the present invention.

Third: In the first embodiment of the present invention, a schematic external view of a protective thin layer attached to a seamless belt is shown.

Fourth: A part of a schematic development view of the inner peripheral surface of the seamless belt to which the protective thin layer is attached according to the first embodiment of the present invention.

Fig. 5 is a schematic side view of a wind tunnel testing device according to a second embodiment of the present invention.

Fig. 6 is a schematic side view of a wind tunnel testing device according to a third embodiment of the present invention.

1‧‧‧wind tunnel test device

10‧‧‧Conveyor belt mechanism

11‧‧‧ driven roller

12‧‧‧ drive roller

13‧‧‧Edge roll

14‧‧‧Seamless belt

14a‧‧‧simulated road surface

14b‧‧‧ lower

14i‧‧‧ inner circumference

15a‧‧‧ Bearing

15b‧‧‧Actuator

16‧‧‧Servo motor

17‧‧‧Protective thin layer

17a‧‧‧ glue layer

17b‧‧‧Protecting thin layer ontology

20‧‧‧Wind Supply Department

21‧‧‧Air duct

21a‧‧ Air inlet

21b‧‧‧Air outlet

22‧‧‧Air supply fan

23‧‧‧Frequency motor

30‧‧‧ Controller

C‧‧‧Car

Claims (17)

A conveyor belt mechanism for running a test device, comprising a pair of rollers and a seamless belt wound around the pair of rollers, wherein the wheel of the test body is disposed on the seamless belt, the seamless belt is a steel belt, Provided: a meandering correction roller that abuts against the seamless belt and corrects the meandering of the seamless belt by tilting about a vertical axis of the rotary shaft, wherein the abutting contact with the meandering correcting roller on the seamless belt a first protective thin layer for protecting the abutting surface over approximately the entire circumference; the seamless belt having a bending rigidity that is not substantially deformed by the applied stress, The applied stress causes the seamless belt to bend due to the aforementioned distortion of the first protective sheet. A conveyor belt mechanism for operating a test apparatus according to claim 1, wherein the seamless belt has a bending rigidity of at least 10 times a bending rigidity of the first protective sheet. The conveyor belt mechanism for operating the test apparatus according to the second aspect of the invention, wherein the seamless belt has a bending rigidity of more than 100 times the bending rigidity of the first protective sheet. The conveyor belt mechanism for operating the test apparatus according to any one of claims 1 to 3, wherein the first protective sheet has a longitudinal elastic modulus of 0.02 (GPa) or more. A conveyor belt mechanism for operating a test apparatus according to claim 4, wherein the first protective sheet has a longitudinal elastic modulus of 0.1 (GPa) or more. For operation as described in any one of claims 1 to 3 of the patent application A transfer belt mechanism of the test apparatus, wherein the first protective thin layer has a transverse elastic modulus of 0.01 (GPa) or more. The conveyor belt mechanism for operating the test apparatus according to claim 6, wherein the first protective sheet has a transverse elastic modulus of 0.02 (GPa) or more. The conveyor belt mechanism for operating the test equipment according to any one of claims 1 to 3, wherein the meandering correction roller and the pair of rollers are individually provided and abutting the seamless belt Edge roller. A conveyor belt mechanism for operating a test apparatus according to claim 8, wherein one end of the edge roller is driven to move in an up and down direction to tilt the edge roller. A conveyor belt mechanism for operating a test apparatus according to claim 8, wherein one end of the edge roller is driven to move in a traveling direction to tilt the edge roller. A conveyor belt mechanism for operating a test apparatus according to claim 8, wherein the first protective thin layer is provided on an inner circumferential surface of the seamless belt, and the edge roller is interposed between the first protective thin layer. It abuts against the inner peripheral surface of the aforementioned seamless belt. A conveyor belt mechanism for operating a test apparatus according to claim 8, wherein the first protective thin layer is provided on an outer circumferential surface of the seamless belt, and the seamless belt abuts against the pair of rollers The inner peripheral surface is provided with the second protective thin layer for protecting the inner peripheral surface over approximately the entire circumference; the edge roller abuts the aforementioned first protective thin layer The outer peripheral surface of the seamless belt; the seamless belt has a bending rigidity that is not substantially deformed by the applied stress, and the applied stress causes the seamless belt to bend due to the distortion of the second protective sheet. A conveyor belt mechanism for operating a test apparatus according to claim 12, wherein the second protective sheet is attached to the seamless belt by gluing. The conveyor belt mechanism for operating the test apparatus according to any one of claims 1 to 3, wherein the meandering correction roller is any one of the pair of rollers; one end of the meandering correction roller is for The traveling direction of the test body is moved to be driven to tilt the meandering correction roller. A conveyor belt mechanism for operating a test apparatus according to any one of claims 1 to 3, wherein the first protective sheet is attached to the seamless belt by gluing. A conveyor belt mechanism for operating a test apparatus according to any one of claims 1 to 3, wherein the steel strip is a stainless steel belt. A seamless belt is a steel strip having a first protective thin layer on one side thereof, the first protective thin layer being used to protect the one surface over approximately the entire circumference, the seamless belt having no application due to being applied The bending rigidity of the degree of stress and substantial deformation, the applied stress causes the seamless belt to bend due to the distortion of the first protective sheet.