Sensor device with conversion of the horizontal angular movement of a boom of an earth-moving machine

Abstract

The sensor device includes conversion of the horizontal angular movement of a boom of an earth-moving machine to an earth-moving machine. The sensor device includes a sensor holder having a transmitter part fixedly mounted on a portion of the boom, and a mechanical transmission for a horizontal angular movement of the transmitter part with respect to a frame about a first axis to transmit to a receiver. The receiver part is moveable angularly about a second axis perpendicular to the first axis. The sensor holder receives at least one sensor to measure the angular movement of the receiver part about the second axis. The sensor holder is rigidly connected to the frame so as to rotate about the first axis.

I claim: 
     
         1 . A sensor device with conversion of horizontal angular movement of a boom of an earth-moving machine, the device comprising:
 a sensor holder being comprised of a transmitter part securely mounted on a part of the boom, and   a mechanical transmission to a receiver part a horizontal angular movement of said transmitter part with respect to a frame about a first axis, said receiver part being moved angularly about a second axis perpendicular to the first axis,   wherein said sensor holder receives at least one sensor to measure said angular movement of the receiver part about the second axis, and   wherein said sensor holder is mounted so as to be rigidly connected to the frame so as to rotate about the first axis.   
     
     
         2 . The sensor device, according to  claim 1 , wherein said transmitter part comprises:
 a vertical hinge-shaped shaft mounted by welding or a base on a part of the boom, the shaft being engaged, and   a first horizontal flange of a bracket securely connected to the frame and comprising a second flange, perpendicular to the first,   wherein a shaft of the receiver part is mounted so as to rotate freely about a horizontal axis.   
     
     
         3 . The sensor device, according to  claim 1 , wherein the transmitter part comprises at least one driving disc mounted in a rotationally fixed manner on the shaft in order to transmit the horizontal angular movement about the axis to a driven disc of the receiver part,
 wherein the mechanical transmission comprises a direct transmission element being comprised of at least one connecting rod connected via joints to the driving disc and to the driven disc, and   wherein a rotation of the driving disc about the vertical axis generates a rotation of the driven disc about the horizontal axis.   
     
     
         4 . The sensor device, according to  claim 1 , wherein the transmitter part comprises at least one driving pulley mounted in a rotationally fixed manner on the shaft in order to transmit the horizontal angular movement about the axis to a driven pulley of the receiver part, and
 wherein the mechanical transmission comprises a direct transmission element being comprised of a belt partially wound around these pulleys, bypassing a return roller whose axis extends perpendicular to the plane passing through axes.   
     
     
         5 . The sensor device, according to  claim 1 , wherein the mechanical transmission takes the form of a bevel gear, comprising, at the transmitter part, a bevel driving wheel mounted in a rotationally fixed manner on the shaft and directly meshing with a bevel driven wheel mounted in a rotationally fixed manner on the shaft of the receiver part. 
     
     
         6 . The sensor device, according to  claim 1 , wherein said sensor holder comprises a receiving base to receive a sensor for angular movement of the receiver part. 
     
     
         7 . The sensor device, according to  claim 6 , wherein the receiving base is disk-shaped, or rectangular, and wherein the receiving base is mounted in a manner rotationally fixed to the shaft of the receiver part. 
     
     
         8 . The sensor device, according to  claim 7 , wherein, with respect to the second vertical flange of the bracket, the receiving base is located on the shaft either on the side of the driven disc, the driven pulley or the driven bevel gear, or on the opposite side. 
     
     
         9 . The sensor device, according to  claim 6 , wherein the sensor is detachably mounted on the receiving base. 
     
     
         10 . An earth-moving machine, comprising:
 a frame;   a boom being comprised of a boom foot rotatable about a vertical axis relative to the frame, the machine being a hydraulic excavator; and   the sensor device according to  claim 1 .   
     
     
         11 . The earth-moving machine, according to  claim 10 , wherein the device is placed on the boom foot, and wherein the transmitter part is made integral therewith.