A load cell for determining a radial force acting on a crankshaft having a receiving sleeve for receiving a bearing ring and a fastening ring for attaching the load cell in a transmission housing. Axial support areas are provided on the fastening ring for axially supporting the outer ring of the first bearing. Moreover, measuring regions for receiving radial forces of the receiving sleeve are provided which connect the receiving sleeve with the fastening ring. Strain sensors are attached to at least two of the measuring regions.

The invention relates to a device for testing the precision retaining ability and fatigue life of RV reducer. The device includes a workbench, a mounting bracket base, a upper pressure plate for the mounting bracket, a servo motor, a mounting fixed sleeve, a tested RV reducer, a temperature sensor, an extension arm, a simulated swing arm, two counterweight blocks named the first and second counterweight block, the first displacement sensor, a sensor holder, a sensor protector, a detection rod, and the second displacement sensor. The device is equipped with two counterweight blocks at the end of the simulated swing arm to simultaneously provide variable loaded torque and loaded bending moment to the RV reducer. The first displacement sensor is placed under the counterweight block to measure the positioning accuracy and repeat positioning accuracy of RV reducer. The second displacement sensor is placed under the detection rod to measure the bending stiffness of RV reducer. After running for a specified time, the precision retaining ability, fatigue life and wear rule of RV reducer are tested. The invention provides an experimental basis for theoretical research on the wear rule and accelerated life of RV reducer.

The invention relates to a device for testing the precision retaining ability and fatigue life of RV reducer. The device includes a workbench, a mounting bracket base, a upper pressure plate for the mounting bracket, a servo motor, a mounting fixed sleeve, a tested RV reducer, a temperature sensor, an extension arm, a simulated swing arm, two counterweight blocks named the first and second counterweight block, the first displacement sensor, a sensor holder, a sensor protector, a detection rod, and the second displacement sensor. The device is equipped with two counterweight blocks at the end of the simulated swing arm to simultaneously provide variable loaded torque and loaded bending moment to the RV reducer. The first displacement sensor is placed under the counterweight block to measure the positioning accuracy and repeat positioning accuracy of RV reducer. The second displacement sensor is placed under the detection rod to measure the bending stiffness of RV reducer. After running for a specified time, the precision retaining ability, fatigue life and wear rule of RV reducer are tested. The invention provides an experimental basis for theoretical research on the wear rule and accelerated life of RV reducer.

An apparatus for evaluating performance of a speed reducer, of the present disclosure, includes: a support frame; a base plate mounted on the support frame; a speed reducer to be evaluated, mounted on the base plate; an input unit, which is mounted on an input-side rotary shaft connected to the speed reducer and includes a driving motor, a torque sensor and an encoder; an output unit, which is mounted on an output-side rotary shaft connected to the speed reducer and includes an encoder and a torque sensor; an output terminal motor selectively connected to the output-side rotary shaft; and a rated torque brake selectively connected to the output-side rotary shaft.

An apparatus is provided to test valves. The apparatus includes an actuation mechanism having an actuator that seals a valve of a combustion chamber of an engine. The apparatus further includes a flow control device that controls a flow of a pressurized fluid to the combustion chamber. The apparatus further includes a plurality of sensors having a first sensor and a second sensor. The first sensor is disposed in an inlet port of the combustion chamber to detect a first flow rate of the pressurized fluid in the inlet port. The second sensor is disposed in an exhaust port of the combustion chamber to detect a second flow rate of the pressurized fluid in the exhaust port. The apparatus further includes a notification device configured to generate an alert based on the detected first flow rate and the detected second flow rate.

An apparatus is provided to test valves. The apparatus includes an actuation mechanism having an actuator that seals a valve of a combustion chamber of an engine. The apparatus further includes a flow control device that controls a flow of a pressurized fluid to the combustion chamber. The apparatus further includes a plurality of sensors having a first sensor and a second sensor. The first sensor is disposed in an inlet port of the combustion chamber to detect a first flow rate of the pressurized fluid in the inlet port. The second sensor is disposed in an exhaust port of the combustion chamber to detect a second flow rate of the pressurized fluid in the exhaust port. The apparatus further includes a notification device configured to generate an alert based on the detected first flow rate and the detected second flow rate.

In order to be able to test an assembly of components of a vehicle on a test stand with improved dynamics, it is provided to calculate, in a simulation unit (20) using a simulation model (21) for the at least one component of the assembly, the instantaneous drive train rotary speed (n.sub.P) of this component from a drive train torque (T.sub.P) acting in the drive train (2) and the braking effect (B) of the braking system (11), and the calculated instantaneous drive train rotary speed (n.sub.P) is used by the vehicle control device (14) for calculating the at least one component, and the calculated drive train rotary speed (n.sub.P) is used by a drive controller (23) for controlling the load machine (8).

In order to be able to test an assembly of components of a vehicle on a test stand with improved dynamics, it is provided to calculate, in a simulation unit (20) using a simulation model (21) for the at least one component of the assembly, the instantaneous drive train rotary speed (n.sub.P) of this component from a drive train torque (T.sub.P) acting in the drive train (2) and the braking effect (B) of the braking system (11), and the calculated instantaneous drive train rotary speed (n.sub.P) is used by the vehicle control device (14) for calculating the at least one component, and the calculated drive train rotary speed (n.sub.P) is used by a drive controller (23) for controlling the load machine (8).

This device comprises an immobilizing device of a first portion (4A) of the shaft, the shaft (4) extending along a first axis (A1), and a movement device of a second portion (4B) of the shaft so as to load the shaft (4) in bending.

The moving device comprises a first cylinder (10), a second cylinder (12), and a connecting device (14) configured to form, between the shaft (4) and one end of the first cylinder (10), a first connection (16) prohibiting a translation perpendicular to the first axis (A1) and allowing a rotation around the first axis (A1), and to form, between the shaft (4) and one end of the second cylinder (12) or between the end of the first cylinder (10) connected to the shaft (4) and one end of the second cylinder (12), a second connection (18) prohibiting a translation perpendicular to the first axis (A1) and allowing a rotation around a second axis (A2) parallel to the first axis (A1).

This device comprises an immobilizing device of a first portion (4A) of the shaft, the shaft (4) extending along a first axis (A1), and a movement device of a second portion (4B) of the shaft so as to load the shaft (4) in bending.

The moving device comprises a first cylinder (10), a second cylinder (12), and a connecting device (14) configured to form, between the shaft (4) and one end of the first cylinder (10), a first connection (16) prohibiting a translation perpendicular to the first axis (A1) and allowing a rotation around the first axis (A1), and to form, between the shaft (4) and one end of the second cylinder (12) or between the end of the first cylinder (10) connected to the shaft (4) and one end of the second cylinder (12), a second connection (18) prohibiting a translation perpendicular to the first axis (A1) and allowing a rotation around a second axis (A2) parallel to the first axis (A1).