Handle ZP 01.000.1.2 of the Front Travel Brake

Handle ZP 01.000.1.2 of the Front Travel Brake (Course Fixation)

Handle ZP 01.000.1.2 is a control element of the frame for modernized grain loaders of the ZM-60U, ZM-90U, ZM-120U series and their ZMB hopper modifications manufactured by Zavod Moroza. It is mounted on the main frame of the unit and operates as part of the front steering strut's band brake mechanism.

The main engineering purpose of this part is to fix the specified direction of movement of the machine. Rotating this handle allows for the rigid locking of the wheel base against spontaneous turning caused by operational vibrations or driving over threshing floor irregularities. The operating principle of the mechanism is based on a screw tie rod system, similar to the trimmer's band brake. Rotating the handle gradually tightens the front travel metal brake band (ZP 01.000.1.3), which tightly grips the steel rim (drum) welded to the driven steering sprocket (ZP 01.402). This design solution allows the operator to smoothly and steplessly fix the steering under any required angle, and thanks to the band clamping, parasitic backlashes characteristic of the classic mechanical gear stopper system on older machine models are eliminated.

Technical Specifications and Design Features of Handle ZP 01.000.1.2

• Catalog number: ZP 01.000.1.2
• Application: Grain loaders ZM-60U, ZM-90U, ZM-120U and their ZMB hopper modifications
• Purpose: Control of the band brake for fixing the front travel direction of movement
• Mechanism type: Screw tie rod
• Adjacent working elements: Metal brake band (ZP 01.000.1.3)

Structurally, the brake control mechanism consists of a screw handle that interacts with a guide pin on the frame to draw the ends of the metal brake band together. When the handle is rotated, the threaded rod is drawn inward, forcing the structure to evenly and tightly clamp the band around the smooth steel drum welded to the large driven steering sprocket. Such screw kinematics allow the operator to meter the pressing force, ensuring rigid retention of the wheel base in the set position without the risk of loosening during vibrations.

The introduction of this system made it possible to eliminate vulnerabilities and inconveniences typical of classic grain loaders of previous generations. On older units, course locking was carried out using a mechanical stopper that engaged directly between the teeth of the small driving sprocket shaft - this archaic method had several engineering flaws. First, the rigid pitch of the gear transmission allowed the wheels to be fixed only in certain discrete positions, limiting adjustment accuracy, and second, due to the small diameter of the part and the short force application arm, extreme concentrated loads from wheel kickbacks acted on the stopper, often leading to the shearing of the lock or the destruction of the teeth themselves. In addition, ergonomic inconveniences arose - if the stopper rested against the tooth face, the operator had to additionally catch the clearance by turning the heavy steering wheel.

The new system with a screw handle and band brake solves all these problems, guaranteeing smooth, stepless fixation at any angle. By shifting the braking point to the large sprocket, physical stresses are distributed over a significantly larger radius, which reliably protects the steering drive from peak impacts and parasitic backlashes.

Related Parts of the Front Travel Fixation Mechanism

Since screw handle ZP 01.000.1.2 is merely a control element, for the full operation of the direction locking system it works in conjunction with several other parts. This modernized assembly includes:

• Front travel brake band ZP 01.000.1.3
• Steering sprocket ZP 01.402
• Small fastening elements

Thanks to the introduction of this system, the overall architecture of the steering lock has become much simpler and clearer for maintenance personnel. The engineering operating principle of the mechanism is identical to the familiar band brake scheme that has been successfully applied for years on an adjacent assembly - the grain loader trimmer rotation mechanism. Also, the new kinematics with a screw handle are orders of magnitude more reliable and repairable than the classic gear stopper. One of the biggest "headaches" of the old small sprocket fixation system was the stopper spring, which stretched, broke, or simply got lost - and without this small spring, the old lock could not hold the steering wheel, and the front strut became uncontrollable.

In the new mechanism, this chronic problem has been radically resolved - the weak link has been completely eliminated. The rigid screw tie rod of handle ZP 01.000.1.2 independently and reliably maintains the set position thanks to the natural self-locking of the thread. The system no longer requires any external springs to maintain tension or return the mechanism, making this assembly as fail-safe as possible even in harsh operating conditions.

Buy Front Travel Brake Handle ZP 01.000.1.2 and the Assembled Unit

You can order screw handle ZP 01.000.1.2 for an existing band brake system of modernized ZM and ZMB series grain loaders directly at Zavod Moroza. In addition to the handle itself, we manufacture and supply all necessary related parts of the assembly - brake bands, steering sprockets with a working drum, as well as fastening and fixation elements.

If your unit is still equipped with the outdated gear stopper, you can comprehensively retrofit the course fixation mechanism to a modern one. Installing the new kinematics on a classic frame of past production years will require some adaptation - for the screw tie rod to work properly on the old frame, it will be necessary to weld a corresponding support plate (mounting pad) onto it. We are ready to outfit your order with all the necessary components for such a transition. In cases where the undercarriage and frame metal structure of your old unit have critical wear, metal fatigue, and distorted geometry, targeted retrofitting may be irrational. Instead of constant repairs, we suggest considering the purchase of a new modern grain loader ZM-60U, ZM-90U, or ZM-120U of our production, where convenient screw fixation of the steering and many other reliable engineering solutions are already factory-implemented.

Contact our sales department for component selection - we understand the design differences of machinery across different generations and will help you select both an individual handle and the correct set of parts for the flawless repair or retrofitting of your unit.