Abstract: A blade attachment tool includes a first support member supported by a pressing support portion supporting a blade formed of an elastic member configured to wipe/scrape liquid/solids spreading on an abutment surface by being pressed against the abutment surface and being long in one direction such that the blade is pressed against the abutment surface with a predetermined pressing force, a second support member supported to swing about a swing shaft extending in a longitudinal direction of the blade with respect to the first support member and configured such that a base end side of the blade is attached thereto, and an energizing member configured to apply a reaction force to a friction force that causes the second support member to swing about the swing shaft with respect to the first support member when the blade is pressed against the abutment surface to slide relatively to the abutment surface.

Abstract: A blade attachment tool includes a first support member supported by a pressing support portion supporting a blade formed of an elastic member configured to wipe/scrape liquid/solids spreading on an abutment surface by being pressed against the abutment surface and being long in one direction such that the blade is pressed against the abutment surface with a predetermined pressing force, a second support member supported to swing about a swing shaft extending in a longitudinal direction of the blade with respect to the first support member and configured such that a base end side of the blade is attached thereto, and an energizing member configured to apply a reaction force to a friction force that causes the second support member to swing about the swing shaft with respect to the first support member when the blade is pressed against the abutment surface to slide relatively to the abutment surface.

Abstract: A pair of insertion portions each having a through hole through which a lashing belt is inserted and extends are arranged at a predetermined distance from each other, and coupled to each other with coupling portions. A tension detecting portion is provided at the coupling portions. The tension detecting portion extends, at a predetermined vertical distance from a line connecting the through holes of the pair of insertion portions to each other, in a width direction of the lashing belt. In a state where the lashing belt is inserted to extend through the pair of insertion portions, a surface of the lashing belt is brought into contact with the tension detecting portion, and the tension detecting portion is configured to be broken when a predetermined or greater tension is applied to the lashing belt.

Abstract: A more accurate tension of a belt or a more accurate target natural frequency of the belt when the belt tension is adjusted is determined. A method for calculating a belt tension includes receiving a natural frequency of a belt and a span; performing calculation for determining a tension of the belt using a predetermined expression, based on the natural frequency, the span, and a unit mass of the belt read from a memory; and displaying the tension on a display, wherein in a case where the span is within a predetermined range corresponding to the belt, the predetermined expression is corrected so that an error caused by a bending stiffness of the belt is reduced.

Abstract: A method of manufacturing a power transmission belt includes: molding and vulcanizing an endless tension member layer in which a cord extending in a belt length direction is embedded; molding and vulcanizing a rubber member for a compressed rubber layer; and bonding together the tension member layer that has been vulcanized and the rubber member, that has been vulcanized, for the compressed rubber layer.

Abstract: A pair of insertion portions each having a through hole through which a lashing belt is inserted and extends are arranged at a predetermined distance from each other, and coupled to each other with coupling portions. A tension detecting portion is provided at the coupling portions. The tension detecting portion extends, at a predetermined vertical distance from a line connecting the through holes of the pair of insertion portions to each other, in a width direction of the lashing belt. In a state where the lashing belt is inserted to extend through the pair of insertion portions, a surface of the lashing belt is brought into contact with the tension detecting portion, and the tension detecting portion is configured to be broken when a predetermined or greater tension is applied to the lashing belt.

Abstract: Provided is a clamping-type tensile force measurement device configured to clamp a belt being used to lash a cargo and to measure a tensile force of the belt. The measurement device includes: a base having a pair of support rollers which are rotatable; and a lid connected to the base via a hinge portion such that the base and the lid form a foldable structure. A load cell is installed in a backside portion of the lid. A pressing plate having a pressing portion positioned to face a space between the pair of support rollers is provided on a backside of the lid.

Abstract: A natural-frequency measurement device for measuring the natural frequency of a belt includes: an acceleration sensor attached to a portion of the belt between an adjacent pair of pulleys to sense acceleration resulting from the vibration of the belt; and a measuring instrument configured to measure the natural frequency of the belt based on the acceleration sensed by the acceleration sensor.

Abstract: Provided is a clamping-type tensile force measurement device configured to clamp a belt being used to lash a cargo and to measure a tensile force of the belt. The measurement device includes: a base having a pair of support rollers which are rotatable; and a lid connected to the base via a hinge portion such that the base and the lid form a foldable structure. A load cell is installed in a backside portion of the lid. A pressing plate having a pressing portion positioned to face a space between the pair of support rollers is provided on a backside of the lid.

Abstract: A method of manufacturing a power transmission belt includes: molding and vulcanizing an endless tension member layer in which a cord extending in a belt length direction is embedded; molding and vulcanizing a rubber member for a compressed rubber layer; and bonding together the tension member layer that has been vulcanized and the rubber member, that has been vulcanized, for the compressed rubber layer.

Abstract: The tension of a belt is determined accurately at a low cost. A natural-frequency measurement device is configured to measure, in a belt transmission system including at least two pulleys between which a belt is stretched, the natural frequency of the belt based on a vibration generated by hitting a portion of the belt stretched between two adjacent ones of the at least two pulleys, and includes: an acceleration sensor attached to the portion of the belt to sense acceleration resulting from the vibration of the belt; and a measuring instrument configured to measure the natural frequency of the belt based on the acceleration sensed by the acceleration sensor. The measuring instrument transmits the natural frequency to a belt tension calculator which determines the tension of the belt based on the natural frequency.

Abstract: A natural-frequency measurement device for measuring the natural frequency of a belt includes: an acceleration sensor attached to a portion of the belt between an adjacent pair of pulleys to sense acceleration resulting from the vibration of the belt; and a measuring instrument configured to measure the natural frequency of the belt based on the acceleration sensed by the acceleration sensor.

Abstract: A more accurate tension of a belt or a more accurate target natural frequency of the belt when the belt tension is adjusted is determined. A method for calculating a belt tension includes receiving a natural frequency of a belt and a span; performing calculation for determining a tension of the belt using a predetermined expression, based on the natural frequency, the span, and a unit mass of the belt read from a memory; and displaying the tension on a display, wherein in a case where the span is within a predetermined range corresponding to the belt, the predetermined expression is corrected so that an error caused by a bending stiffness of the belt is reduced.

Abstract: In a drive belt system, an idler pulley 6 is formed by an auto belt alignment pulley. For example, a pulley body 60 is rotatably carried on a hollow cylindrical shaft member 62, a support rod 63 is inserted in the shaft member 62, and the pulley body 60 and the shaft member 62 are connected to each other via a pin 64 (pivot axis C2) for angular movement about the pin 64. The pin 64 is inclined orthogonally to the shaft member 62 and forward in the direction of rotation of the pulley body 60 with respect to the direction of a radial shaft load L. With this configuration, when a flat belt 8 deviates to one side, the pulley body 60 inclines to create a level difference in the direction of the radial shaft load L and angularly moves orthogonally to the flat belt 8, thereby correcting the deviation of the flat belt 8. To fulfill the auto belt alignment function, belt span lengths Si and So between the idler pulley 6 and both the adjacent pulleys 3 and 4 are each set larger than the width of the flat belt 8.

Abstract: A hollow cylindrical pulley body 5 is carried rotatably by a hollow cylindrical shaft member 11. A support rod 8 is inserted in the shaft member 11 to support the shaft member 11 for rocking motion about a pivot axis C2 orthogonal to the shaft member 11. The pivot axis C2 is inclined backward in the direction of belt travel with respect to the direction of load on the shaft member 11. With this configuration, when the drive belt 3 deviates to one side, the pulley body 5 is immediately angularly moved so that it is inclined with a level difference with respect to the direction of load on the shaft member 11 and is positioned obliquely relative to the drive belt 3, thereby producing a force of returning the drive belt 3 to its normal position.

Abstract: A hollow cylindrical pulley body 5 is carried rotatably by a hollow cylindrical shaft member 11. A support rod 8 is inserted in the shaft member 11, and the shaft member 11 is elastically supported to the support rod 8 through an elastic body 10. The elastic body 10 is provided within a quarter of the periphery of the support rod 8 that is located, when viewed along the axis of the shaft member 11, forward of the line of action of a radial shaft load on the shaft member 11 with respect to the direction of rotation of the pulley body 5. With this configuration, when the drive belt 3 deviates to one side, the pulley body 5 is immediately angularly moved so that it is inclined with a level difference with respect to the direction of the radial shaft load and is positioned obliquely relative to the drive belt 3. In this manner, a force of compensating for the deviation of the drive belt 3 is produced to avoid its wobbling.

Abstract: A pulley body 5 is provided at its both sides with power transmission members 6, 6. When a flat belt 3 becomes misaligned relative to the center of the pulley body 5 and comes into contact with one of the power transmission members 6, a running force of the flat belt 3 is utilized to displace the pulley body 5 diagonally relative to the flat belt 3, thus producing a force for returning the flat belt 3 to its original state.

Abstract: In a belt drive system 20 for transmitting torque at a crankshaft 11 of an automotive engine 10 to a supercharger (engine accessory) 130a, an output pulley unit 40 formed of a first flat pulley 50 and a second flat pulley 60 is coupled to the rotational shaft 131a of the supercharger 130a. A flat belt 70 entrained between the output pulley unit 40 and the crank pulley 30 of the crankshaft 11 is shifted from the first flat pulley 50 to the second flat pulley 60 or vice versa by a speed ratio selector 80. The rotational shaft 131a can thereby be driven into rotation with the switching between a high speed ratio during acceleration and a low speed ratio during constant speed cruise. As a result, the supercharger 130a can bring out its capability into full play without using parts involving increases in weight, cost and power consumption, such as a solenoid-operated clutch, and concurrently suppress the deterioration of fuel economy.

Abstract: In a drive belt system, an idler pulley 6 is formed by an auto belt alignment pulley. For example, a pulley body 60 is rotatably carried on a hollow cylindrical shaft member 62, a support rod 63 is inserted in the shaft member 62, and the pulley body 60 and the shaft member 62 are connected to each other via a pin 64 (pivot axis C2) for angular movement about the pin 64. The pin 64 is inclined orthogonally to the shaft member 62 and forward in the direction of rotation of the pulley body 60 with respect to the direction of a radial shaft load L. With this configuration, when a flat belt 8 deviates to one side, the pulley body 60 inclines to create a level difference in the direction of the radial shaft load L and angularly moves orthogonally to the flat belt 8, thereby correcting the deviation of the flat belt 8. To fulfill the auto belt alignment function, belt span lengths Si and So between the idler pulley 6 and both the adjacent pulleys 3 and 4 are each set larger than the width of the flat belt 8.

Abstract: A hollow cylindrical pulley body 5 is carried rotatably by a hollow cylindrical shaft member 11. A support rod 8 is inserted in the shaft member 11 to support the shaft member 11 for rocking motion about a pivot axis C2 orthogonal to the shaft member 11. The pivot axis C2 is inclined backward in the direction of belt travel with respect to the direction of load on the shaft member 11. With this configuration, when the drive belt 3 deviates to one side, the pulley body 5 is immediately angularly moved so that it is inclined with a level difference with respect to the direction of load on the shaft member 11 and is positioned obliquely relative to the drive belt 3, thereby producing a force of returning the drive belt 3 to its normal position.