MEANS FOR MEASURING THE AXLE LOAD IN VEHICLES

• US 3,878,908 A
• Filed: 03/05/1974
• Issued: 04/22/1975
• Est. Priority Date: 03/05/1974
• Status: Expired due to Term

• Current Assignee: Lars-Erik Lindback, Leif Andersson
• Original Assignee: Lars-Erik Lindback, Leif Andersson
• Inventors: Andersson, Leif, Lindback, Lars-Erik
• Primary Examiner(s): Miller, Jr., George H.
• Application Number:
  US05/448,369
• Time in Patent Office: 413 Days
• Field of Search: 177/136,211
• US Class Current: 177/136
• CPC Class Codes: G01G 19/12 having electrical weight-sensitive devices

Abstract

For measuring the axle load in a stationary axle of a vehicle, strain sensing transducers are arranged in mechanical contact with the axle in an area between the wheel bearings and attachments for the load-transferring members. When the vehicle is equipped with brakes, the transducers are placed on opposite sides of a member for transmitting the braking torque which is connected to the axle.

Claims

1. In a vehicle having a stationary axle, having a wheel bearing (1) at each end, an attachment (2) for a load transferring member between the wheel bearing and the midpoint of the axle and a torque-transferring member (4) attached to the axle for transferring a braking torque thereto, said torque-transferring member (4) being positioned between the load-transferring member (2) and the wheel bearing (1), means for measuring strains in the axle comprising strain sensing transducer means (5) arranged in mechanical contact with the axle on a part of the axle situated between the wheel bearing and said torque-transferring member (4) and including means to measure the shearing forces in the axle by measuring the main strains oriented at an angle of 45* to the longitudinal direction of the axle associated with the shear strain.

2. In a vehicle having a stationary axle, having a wheel bearing (1) at each end, an attachment (2) for a load transferring member between the wheel bearing and the midpoint of the axle, and a torque-transferring member (4) attached to the axle for transferring a braking torque thereto, said torque-transferring member being positioned between the load-transferring member (2) and the wheel bearing, means for measuring strains in the axle comprising strain sensing transducer means (6) arranged in mechanical contact with the axle situated between said torque-transferring member (4) and said load-transferring member (2) and including means to measure the shearing forces in the axle by measuring the main strains oriented at an angle of 45* to the longitudinal direction of the axle associated with shear strain, and to deliver a signal depending on said main strains, said transducer means comprising at least one transducer arranged on the front side of the axle and at least one transducer on the rear side of the axle, the output signals From said transducers being added in such a manner that the torque-dependent signals are eliminated.

3. In a vehicle as claimed in claim 2, said transducer means including for each end of the axle one transducer located on the front side and one transducer on the rear side of the axle.