This document describes an auto lock quick hitch for excavators made by D&J Innovations. It uses a German-made rotary actuator and patented rear locking mechanism that does not utilize any moving parts, making it simple and reliable for heavy duty conditions. The locking system is positive and mechanical, with engagement visible from the cabin. It is intended for attachments like rock breakers, shears, and buckets.

1. TILT AUTO LOCK QUICK HITCH
3T-100T EXCAVATORS
Success Through Innovation…

2. Compliant with the Standards;
• AS4772-2008, Australian Standards.
• NSW WorkCover- Position Paper-Supplying, installing and using
quick hitches on excavators or backhoes.
Fully Welded Structure
( AS1554.4 Q&T Welding
Standard)
Certified Lifting lug
( AS1418.8-2008 )
AS3597-700
(Bis-80 Grade) Plates
Extra Stiffeners

3. Quality Components;
HKS (Germany) Rotary Actuator
• Maintenance-free operation, since there is no need for re-lubrication and readjustment.
• More precise operation: high holding torques and precise manufacture ensure the exact
maintenance of the selected position.
• Constant torque/holding torque: regardless of the operating angle.
• Durability: protection against wear, tear and rust thanks to special manufacturing,
annealing and hardening processes which give the robust welded housings the utmost
accuracy of shape.

4. Most Auto Lock Quick Hitches available in the market fail due to
jamming, wear, ceasing and fatigue of moving parts under heavy duty
conditions.
D&J Innovative mechanism does not utilize any moving parts for the
rear lock. This mechanism utilizes the shape of the rear hook to act as
a secondary lock. Therefore, it is simple and reliable which guarantee
you a hassle free coupler.
• Patent Pending Design ( Patent # 2016100539).
• Designed and Manufactured in Australia.
• Manufactured using Extra High Strength Steel (700MPa).
Designed for Heavy Duty Conditions

5. Success Through Innovation
During a hydraulic failure, rear pin comes to a position as shown in the
picture. Due to the shape and orientation, contact reaction force between
the rear hook and pin further pushes rear hook outwards. This
guarantees mechanism never fails unless the steel structure breaks.
This is the first one and only coupler available in the market, which utilizes
the kinematics and geometry of the rear hook for the secondary locking
mechanism.
Locking system is Positive Mechanical.
Multi-Coupler (Caters for different pin centers).
Engagement of the locking mechanism is visible from the excavator cabin.
Double Locking, No Swinging
Patent # 2016100539

6. Intended Uses;
• Rock Breakers
• Shears, Crushers,
• Grapples
• Rock Buckets, and Mud Buckets
• Vibratory Hammers
• Rippers
• Compactors

7. Contacts
Email: dhanushka@dnjengineers.com.au
Mob: 0406 025748
Web: www.dnjengineers.com.au