Load beam for a weighing apparatus
A weighing apparatus comprises a weighing table secured to a support frame by way of a load beam, the load beam being an elongate member having a through hole receiving a securing bolt fixed to the weighing table. In the invention, the securing bolt passes through a bracket, having two limbs disposed above and below the load beam, respectively. A pressure distribution plate is compressed by the securing bolt between one limb, of the bracket and one side of the load beam. On the other side of the load beam, a cylindrical sleeve encircling the securing bolt passes through a hole in the other limb of the bracket, to prevent movement of the bracket transverse to the axis of the securing bolt.
1. A weighing apparatus comprising a weighing table secured to a support frame by way of a load beam, wherein the load beam is an elongate member having a through hole receiving a securing bolt fixed to the weighing table, characterised in that the securing bolt passes through a stiffening member having parts disposed above and below the load beam, respectively, a pressure distribution plate is compressed by the securing bolt between a first part of the stiffening member and one side of the load beam, and, on the other side of the load beam, a cylindrical sleeve encircling the securing bolt passes through a hole in the second part of the stiffening member to prevent movement of the stiffening member transverse to the axis of the securing bolt.
2. The weighing apparatus of claim 1 , wherein the stiffening member is a bracket having two limbs.
3. The weighing apparatus of claim 1 , wherein the stiffening member is a bracket having two L-shaped parts, the two L-shaped parts are connected to each other.
4. The weighing apparatus of claim 1 , wherein the pressure distribution plate has a contact surface such that each portion of the contact surface has a corresponding contact portion on the opposite side of the axis of the bolt.
5. The weighing apparatus of claim 4 , wherein the pressure distribution plate is precisely symmetrical about the axis of the bolt.
6. The weighing apparatus of claim 4 , wherein the pressure distribution plate is circular.
7. The weighing apparatus of claim 4 , wherein the pressure distribution plate is square.
8. The weighing apparatus of claim 1 , wherein the stiffening member is able to move freely relative to the cylindrical sleeve in a direction parallel to the bolt axis.
9. The weighing apparatus of claim 1 , wherein the cylindrical sleeve is precisely symmetrical about the axis of the bolt.