Products : Custom Design : Custom Design Load Pin Solutions : LCM2207 350kN Military Vehicle Towing Force Load Pin

LCM2207 350kN Military Vehicle Towing Force Load Pin

Load Pin LCM2207

Design Brief

We received this enquiry from another load cell manufacturer, who specialise in large volume load cell production. They received this enquiry and rather than decline it, asked us to help them service their customer's needs.

The load pin was required to be installed on a towing attachment on the rear of a tank. It was to be used in field trials to monitor the towing forces seen in different towing scenarios. The pin had to be designed to replicate precisely the pin existing pin. This meant designing a special locking and removal system. The output from the pin had to suit an existing datalogger, so we included an integral amplifier, with a voltage output, which was scaled to the datalogger input.

The main criteria we were given was as follows:-

  1. The load pin had to replicate the existing tow pin precisely
  2. The output from the pin had to suit their existing datalogger
  3. The pin had to be robust, to suit a harsh environment
  4. It had to be designed, manufactured and delivered, ready for a field trial, 3 weeks after we received the order
  5. We had to work indirectly to determine the required design parameters, assisting our customer in obtaining the correct data required to design and manufacture the product.

Features

  • Manufactured from 17-4PH stainless steel
  • Designed to match the existing uninstrumented towing pin
  • Integral connector, to allow fast disconnect, between tests
  • Sealed to IP67
  • Integral signal conditioner, providing an amplifier voltage output
  • Able to work directly from the military vehicle battery
  • Supplied calibrated, with a calibration certificate, traceable to UKAS

Specification

 
Rated Load (RL):  350kN
Proof Load: 525kN
Ultimate Breaking Load: >1400kN
Output: 0.1 volts to 9.9 volts
Accuracy: <±2% of Rated Load
Non-Repeatability: <±0.2% of Rated Load
Excitation Voltage: 13-30vdc
Bridge Resistance: 350Ω
Insulation Resistance: >100MΩ @ 50vdc
Operating Temperature Range: -20 to +70°C
Compensated Temperature Range: -10 to +40°C
Zero Temperature Coefficient: <±0.01% of Rated Load/°C
Span Temperature Coefficient: <±0.01% of Rated Load/°C
Environmental Protection Level: IP67
Connection Type: Integral 6 way MIL spec. connector, supplied with 10m mating PUR cable assembly

Downloads

2D Drawing

LCM2207 2D Drawing

3D PDF Model

LCM2207 Load Pin 3D

Click on the image to view the 3D model

Test Results

LCM2207 Load Pin Calibration Certificate

Related Notes

The LCM2207 was a challenging project for us. There were some unusual design features that had to be included. With us not having direct contact with the customer, made the 3 week target lead time very challenging. Having our own internal machine shop made it possible to expedite the production.

The LCM2207 was one of the earliest products that used the new ICA range of internal load cell amplifiers. Details of this product can be found on the ICA product page. It is now very common for us to build signal conditioning within our products. This provides the customer with a more useable, pre-calibrated signal, reducing system integration costs.

LCM Systems are specialists in the design of load pins, whether these be "1 off" designs or production run products. We manufacture load pins in batch sizes between 1off to 1000off.  Many of these products are supplied with built in analogue signal conditioningdigital outputs or with wireless telemetry. The nature of most load pin applications, dictates a special design.

Please contact us to discuss any special load pin requirements you may have.

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