초록 ▼

The present invention provides an axle mounting arrangement for mounting an axle assembly to the frame of a vehicle. A plurality of attachment structures are provided on the frame, and at least one support structure is provides for coupling the axle assembly with the attachment structures at differe

The present invention provides an axle mounting arrangement for mounting an axle assembly to the frame of a vehicle. A plurality of attachment structures are provided on the frame, and at least one support structure is provides for coupling the axle assembly with the attachment structures at different locations along the frame.

대표청구항 ▼

The present invention provides an axle mounting arrangement for mounting an axle assembly to the frame of a vehicle. A plurality of attachment structures are provided on the frame, and at least one support structure is provides for coupling the axle assembly with the attachment structures at differe

The present invention provides an axle mounting arrangement for mounting an axle assembly to the frame of a vehicle. A plurality of attachment structures are provided on the frame, and at least one support structure is provides for coupling the axle assembly with the attachment structures at different locations along the frame. dicular to said centerline of said section of said drill string, whereby said component of said force on said drill bit determined by said force determining means is the weight on said drill bit. 3. The apparatus according to claim 1, further comprising: i) a second set of strain sensors for each of said pockets, each of said second sets of strain sensors affixed to said wall of each of its respective pocket, each of said second sets of strain sensors comprising fifth, sixth, seventh, and eight strain sensors circumferentially spaced approximately equidistantly around said wall of its respective pocket, each of said fifth strain sensors in each of said second sets of strain sensors disposed opposite said seventh strain sensors in its respective set, each of said sixth strain sensors in each of said sets of strain sensors disposed opposite said eighth strain sensor in its respective set; j) circuitry connecting each of said strain sensors in said second sets of strain sensors, said circuitry forming a second bridge, said second bridge comprising first, second, third and fourth legs, (i) a first junction formed between said first and second legs, (ii) a second junction formed between said third and fourth legs, whereby said first and second junctions form a first pair of terminals, (iii) a third junction formed between said first and fourth legs, (iv) a fourth junction formed between said second and third legs, whereby said third and fourth junctions form a second pair of terminals, (v) each of said fifth strain sensors in each of said second sets of strain sensors connected in series along said first leg of said second bridge, (vi) each of said sixth strain sensors in each of said sets of strain sensors connected in series along said second leg of said second bridge, (vii) each of said seventh strain sensors in each of said sets of strain sensors connected in series along said third leg of said second bridge, and (viii) each of said eighth strain sensors in each of said sets of strain sensors connected in series along said fourth leg of said second bridge; k) means for applying a voltage across one of said pairs of terminals of said second bridge; l) means for sensing a voltage across the other of said pairs of terminals of said second bridge; m) means for determining at least a second component of said force on said drill bit from said voltage sensed across second bridge. 4. The apparatus according to claim 3, wherein said section of said drill string defines a centerline thereof, and wherein each of first and third strain sensors in each of said second sets of strain sensors are disposed along a first line oriented approximately 45° to said centerline of said section of said drill string, and wherein each of said second and fourth strain sensors in each of said second sets of strain sensors are disposed along a second line oriented approximately perpendicular to said first line, wherein said second component of said force on said drill bit determined by said force determining means is the torque on said drill bit. 5. The apparatus according to claim 1, wherein said wall is a side wall of said pocket. 6. The apparatus according to claim 1, wherein said wall is a bottom wall of said pocket. 7. The apparatus according to claim 1, wherein said section of said drill string is a drill collar. 8. An apparatus for sensing the weight and torque applied to a drill bit operating down hole in a well, comprising: a) a drill bit; b) a drill string operatively coupled to said drill bit, said drill string having a section disposed proximate said drill bit, said section of said drill string defining a centerline thereof; c) at least first, second and third pockets formed in said section of said drill string, said pockets circumferentially spaced approximately equidistantly around said section of said drill bit, each of said pockets forming at least first and second walls; d) a first set of strain sensors for each of said pocke