Abstract: A work machine having a belt tensioning system is described. A belt is engaged with an engine drive sheave and a driven sheave of a rotor having a plurality of cutting tools configured for reducing wood infeed material. An idler pulley is mounted to an idler arm that is hinged to the machine frame. An actuator is hinged to the idler arm and the frame. The actuator may be extended and retracted in order to press the idler pulley into stronger and weaker engagement with the belt in order to set the desired amount of tension in the belt. One or more sensors may be used to sense the amount of tension in the belt, and the one or more sensors may be in communication with a control system that controls the actuator to monitor and adjust the belt tension so that it is maintained within desired limits.

Abstract: An example torque controlled actuator includes a frame, and one or more timing belt stages coupled in serial on the frame. The timing belt stages include an input stage for coupling to a motor and an output stage for coupling to a load, and the timing belt stages couple rotation of the motor to rotation of an output of the output stage. The torque controlled actuator also includes one or more belt idlers coupled to the frame that contact a timing belt of the output stage, and a strain gauge coupled to the frame to determine a tension of the timing belt of the output stage based on force applied by the timing belt of the output stage to the one or more belt idlers.

Abstract: A flexible member test apparatus comprising a driver member having a first diameter and a second diameter, the first diameter is not equal to the second diameter, a first driven member coupled by a first flexible member to the driver member through contact of the first flexible member with a first diameter surface, a second driven member coupled by a second flexible member to the driver member through contact of the second flexible member with a second diameter surface, the first driven member rotationally coupled to a magnetic particle clutch, and the second driven member rotationally coupled to the magnetic particle clutch.

Abstract: A device having a winch spool, a torque sensor that measures torque of the winch spool, a first angle sensor that detects a first angle of a winch line relative to a central axis of the winch spool, and a second angle sensor that detects a second angle of the winch line coming from a coil of line on the spool relative to a surface of the coil of line is disclosed.

Abstract: A flexible member test apparatus comprising a driver member having a first diameter and a second diameter, the first diameter is not equal to the second diameter, a first driven member coupled by a first flexible member to the driver member through contact of the first flexible member with a first diameter surface, a second driven member coupled by a second flexible member to the driver member through contact of the second flexible member with a second diameter surface, the first driven member rotationally coupled to a magnetic particle clutch, and the second driven member rotationally coupled to the magnetic particle clutch.

Abstract: A belt conveying tension measuring system for measuring applied take-up tension on a belt of a bucket elevator or a belt of a conveyor. The tension measuring system includes a center assembly that is used in combination with a pushing assembly and a horizontal stabilizer assembly such that when a deflection operating assembly is used actuation of the deflection operating assembly causes the pushing assembly to provide deflection to the belt of the conveyor. The pressure to deflect the belt a set amount is measured with and set by a load cell and scale assembly.

Abstract: An apparatus for adjusting a tension of a pulling device in a pulling-device drive includes a body and a lever arm. The pulling-device drive includes first and second shafts and the pulling device loops around the first and second shafts. The body includes a receptacle adapted to interact with the first shaft and a support point adapted to rotatably dispose the body about an axis of rotation. The lever arm extends from the body so that a spacing between the first and second shafts is modifiable by action of a force on the lever arm.

Abstract: A belt conveying tension measuring system for measuring applied take-up tension on a belt of a bucket elevator or a belt of a conveyor. The tension measuring system includes a center assembly that is used in combination with a pushing assembly and a horizontal stabilizer assembly such that when a deflection operating assembly is used actuation of the deflection operating assembly causes the pushing assembly to provide deflection to the belt of the conveyor. The pressure to deflect the belt a set amount is measured with and set by a load cell and scale assembly.

Abstract: A belt conveying tension measuring system for measuring applied take-up tension on a belt of a bucket elevator or a belt of a conveyor. The tension measuring system includes a center assembly that is used in combination with a pushing assembly and a horizontal stabilizer assembly such that when a deflection operating assembly is used actuation of the deflection operating assembly causes the pushing assembly to provide deflection to the belt of the conveyor. The pressure to deflect the belt a set amount is measured with and set by a load cell and scale assembly.

Abstract: To determine the backlash in an arrangement in which a motor moves a load via a transmission mechanism, a transducer is used which is present anyway in conventional production machines and which measures an angular position or translatory position of the drive element or a derivative of this quantity. Via the transducer the effect of the backlash on the actual position of the drive element is measured, the actual position being different from the desired position, which is defined by the forces or torques acting on the drive. On the basis of a frequency analysis, quantities can be derived which permit the use of threshold criteria. For example, the drive is driven with a periodic signal which is close to the absorber frequency, i.e. a frequency at which the absorption by the transmission mechanism is greatest.

Abstract: The disclosed invention is an apparatus for injecting tubing into a well while sensing wear within the apparatus, along with a method for sensing wear, according to which the tubing is engaged by a chain and the linear motion of the tubing and the chain is sensed.

Abstract: A strap fastener set, capable of providing a reading of a tensile force exerted thereon, includes a strap fastener for winding a first strap and a gauge provided between the strap fastener and a second strap. The gauge includes a cylinder tied with the second strap. The cylinder includes a window defined therein and a scale provided thereon along the window. A first ring is secured to the cylinder. A spring is put in the cylinder. A rod extends past the ring through the spring for connection with the strap fastener. A second ring is secured to the rod so that it is moved relative to the cylinder so as to compress the spring against the first ring when a tensile force is exerted on the straps. The second ring includes an indicator formed thereon for cooperation with the scale so as to provide a reading of the tensile force.