Patent classifications
G01G3/141
Chain hoist with integral load cell
A load cell includes a bearing element configured for a hoist that includes a hook, a suspension with an orifice that receives a shaft of the hook, a nut, and housing. The bearing element, preferably a ring, contacts the suspension, and has an orifice that receives the shaft therethrough with the nut secured to the shaft proximate to the bearing element. Strain gauges are mounted on the ring side wall being equally spaced. A second suspension orifice concentric with the first orifice receives the ring with strain gauges therein. For improved accuracy, a thrust roller bearing and two thrust washers are positioned on sides of the ring, all of which are preferably positioned in a cup member that is received in the second orifice. A clearance fit is provided with respect to each of protruding upper and lower overhanging cylindrical ring lips and the cup to protect the gauges.
Ultra-low module stress protected load cell
Provided by the present invention is an ultra-low module load cell, comprising: an elastomer and a bottom plate; the elastomer is disposed above the bottom plate, and a support cushion block is disposed between the elastomer and the bottom plate; the elastomer is provided with a central hole having an opening facing downward; the support cushion block has a central top end, the central top end and the bottom of the central hole being in point contact support or small-area contact support; a gap exists between a hole wall of the center hole and the support cushion block, while the support cushion block is mounted on the bottom plate, and a head portion of the support cushion block is encapsulated in the central hole. The ultra-low load cell module of the present invention is easy to install, accurate in weighing, and may minimize height.
Rod-shaped force transducer with improved deformation behavior
A force transducer for measuring compression and/or tension forces includes a rod-shaped deformation body and at least four strain transducers applied on the deformation body and configured for measuring longitudinal and transverse strains thereof. Front and rear elongate recesses are provided on the front and rear sides of the deformation body in the area of an intersection between a central longitudinal axis and a central transverse axis of the deformation body. Left and right upper indentations and left and right lower indentations are provided on the deformation body respectively at the four quadrants bounded by the axes. A ratio of a cross-section on a center plane extending orthogonally to the central longitudinal axis and including the central transverse axis, to a sum of first and second partial regions of the cross-section, is from 1.56 to 2.15.
SUSPENDABLE SCALE FOR WEIGHING A BUNDLE AND A FOREST MACHINE
The invention relates to a suspendable scale for weighing a bundle, comprising: a first part for suspending the scale from a structure; a second part for suspending an implement from the scale; a third part joining the first part and second part, the first part, second part, third part being at least partly radially nesting relative to one another; at least two strain gauges connected to the third part; a wireless transmitter for sending the measurement data to an operator; a self-powered power supply for feeding an electric current to the strain gauges and the wireless transmitter; a first space formed in the scale to integrate the wireless transmitter inside the scale; a second space to integrate the power supply inside the scale.
The invention also relates to an arrangement for hoisting a bundle.
PLANAR LOAD CELL ASSEMBLY
An assembly including a load cell body having contiguous cutout windows, each formed by a pair of cutout lines and connected by a cutout base, the second window being transversely bounded by the first window,; measuring beams, disposed generally along edges of the body, each defined by a respective line of the first pair of cutout lines; first and second arrangements, each having a pair of flexure beams connected by first and second bases, respectively; a loading element, extending from the second base; and strain gages, attached to the beams, and a transverse flexural arrangement.
Load cell with an external interface and weighing foot with a load cell
A load cell for installing in a weighing foot is described with a spring body, a measuring transducer for generating an output signal corresponding to a weight acting on the force introduction element, and an external interface connected to the measuring transducer. The spring body can have an outer support ring, a force introduction element, and an annular deformation section, the support ring and the force introduction element being connected with the annular deformation section. The external interface can output the output signal generated by the measuring transducer to an external device. The external interface for the external output of the output signal is provided at the force introduction element.
Load cell and weighing foot
The invention relates to a load cell with a spring body formed rotationally symmetrically about a center axis, and a plurality of strain gauges arranged on a lower side of the membrane for detecting a stretching and/or compressive deformation of the spring body, wherein the strain gauges are electrically connected to a Wheatstone bridge or as a part thereof, with at least one first strain gauge. The spring body has an outer support ring, an upwardly projecting inner force introduction element, and an annular deformation section that is formed as an annular membrane and with which the support ring and the force introduction element are fixedly connected to one another. The mean thickness of the annular membrane in the region of the first strain gauge or gauges is larger than the mean thickness in the region of a second strain gauge or gauges.
Load cell for a scale
The invention relates to a load cell for a scale having a monolithically configured measurement body that has a force reception section, a force introduction section, and a joint section arranged between the force reception section and the force introduction section, wherein the measurement body has a longitudinal axis and an axial end at the force reception side and an axial end at the force introduction side; having at least one strain gauge arranged at the upper side on the joint section for detecting a stretching deformation of the measurement body; and having a circuit board that is electrically connected to the at least one strain gauge, that is arranged at the force reception side, and that has electronics arranged thereon for processing at least one output signal of the at least one strain gauge.
Load Cell and Weighing Foot
The invention relates to a load cell comprising a spring body having an outer support ring, having an inner force introduction element, and having an annular deformation section via which the support ring and the force introduction element are fixedly connected to one another; a measuring transducer for generating an output signal corresponding to a weight acting on the force introduction element;
and means electrically connected to the measuring transducer that are configured to output the output signal generated by the measuring transducer to external. The means for the external output of the output signal are provided at the force introduction element.
LOAD CELL AND WEIGHING FOOT
The invention relates to a load cell comprises a spring body formed rotationally symmetrically about a center axis, having an outer support ring, an upwardly projecting inner force introduction element, and an annular deformation section that is formed as an annular membrane and via which the support ring and the force introduction element are fixedly connected to one another; and a plurality pf strain gauges arranged on a lower side of the membrane for detecting a stretching and/or compressive deformation of the spring body, wherein the strain gauges are electrically connected to a Wheatstone bridge or as a part thereof, with at least one first strain gauge. The mean thickness of the annular membrane in the region of the first strain gauge or gauges is larger than the mean thickness in the region of a second strain gauge or gauges.