Mounting adapter for a fork lift truck

• US 4,323,132 A
• Filed: 04/06/1981
• Issued: 04/06/1982
• Est. Priority Date: 08/25/1980
• Status: Expired due to Term

• Current Assignee: Avery Weigh-Tronix LLC (Illinois Tool Works Inc.)
• Original Assignee: Weigh-Tronix, Inc. (Illinois Tool Works Inc.)
• Inventors: Bradley, Richard S.
• Primary Examiner(s): MILLER JR, GEORGE
• Application Number:
  US06/251,051
• Time in Patent Office: 365 Days
• Field of Search: 177/128, 177/139
• US Class Current: 177/139
• CPC Class Codes: G01G 19/083 lift truck scale
• CPC Class Codes: G01G 3/1404 combined with means to connect the strain gauges on electrical bridges

Abstract

A mounting adapter provides a quick attachment means for mounting or removing an electro-mechanical scale with respect to the lift frame of a fork lift truck. The scale comprises a scale frame, which supports the lifting forks, and also includes a plurality of deformable bolts each having strain gages thereon to sense deformation of the bolts when a load is placed on the forks. Circuit means produce output signals caused by deformation of the bolts and the circuit means also converts the signals to perceptive weight readouts. The mounting adapter includes transverse frame members to which the deformable bolts are secured. Clamping means clamp the frame members of the mounting adapter to the lift frame of the fork lift truck.

Claims

1. A mounting adapter for mounting an electro-mechanical scale on a fork lift truck having a lift frame structure and having lifting forks, the scale including a scale frame, having a pair of horizontal frame elements, for supporting the lift forks and a plurality of deformable members on the scale frame, and a plurality of electrical resistant strain gages mounted on each deformable member to sense the deformation of the latter, circuit means producing output signals caused by deformation of the deformable members means and means for converting the output signals into a perceptive weight readout, said mounting adapter including,

a pair of transverse frame members secured to the scale frame elements by the deformable members and clamping means on said frame members including a plurality of clamping elements engaging said transverse members and the lift frame structure, and means securing said clamping elements to one of said frame members to permit quick attachment and detachment of the mounting adapter and scale frame on the lift frame structure.

2. The mounting adapter as defined in claim 1 wherein said transverse frame members are arranged in upper and lower relationship, said clamping elements engaging said lower frame members and the lift frame structure, and said securing means including a pair of attachment bolts securing the clamping elements to the lower frame member.

3. The mounting adapter as defined in claim 1 wherein said transverse frame members are arranged in upper and lower horizontal relationship, said clamping elements including a pair of upper clamping elements affixed to said upper transverse frame members and engaging said lift frame structure, and a pair of lower clamping elements engaging said lower transverse frame member and said lift frame structure, and means releasably securing the lower clamping elements to said lower frame members.