Improvements to the main mechanisms of the TITAN423 paver

The TITAN423 asphalt concrete paver, which was jointly produced by our company and the German ABG Company, underwent a technological upgrade in 2003. The main mechanisms of this machine were improved as follows.

The walking system has been changed from the original gear transmission reducer to a standard planetary gear reducer. After improvement, it is small in size and easy to maintain. On-site maintenance can be carried out without opening the machine cover. All exposed hydraulic pipelines are connected with steel pipes, which not only reduces the occupied space of the hydraulic system, but also increases the heat dissipation of the walking system, and at the same time solves the problem of excessively high hydraulic oil temperature of the original machine. The original control method remains unchanged and electronic computer control is still adopted, enabling the paver to achieve precise straight-line travel and smooth steering at the pre-selected speed.

The connection of the spiral material distribution system has been changed from the original convex block type intermediate connector fork connection type to the flange connection type between the spiral material distribution system and the material distributor shaft. After the flange connection is adopted, the radial shaking of the distributor shaft is restricted by the 8 connecting bolts on the flange, which solves the problem of frequent wear of the distributor shaft and the support arm bearings, reduces the user's usage cost, and avoids the frequent replacement of the distributor shaft and support arm.

Install an ironing tensioning system. The screed model selected for the TITAN423 paver is the VDTl21 double hammer mechanical extended type. When the user requires a spreading width of 12 meters, the extended sections of 1.50, 1.00, 0.50 and 0.25m ironing plates need to be joined together with the basic ironing plate of 2.50 meters to meet the spreading requirements. However, during the paving process, as the front of the screed is piled up with paving materials, when the paver moves forward, the screed encounters considerable resistance. Moreover, the 12-meter-long screed is assembled from several modules, and its overall rigidity is limited. Therefore, it is very easy for cracks to form at the connection points of the screed and the middle seams of the basic screed, affecting the smoothness and density of the paved road surface. Therefore, as a standard configuration, a screed tensioning system was added. That is, a bracket was installed at the end of each side of the screed, and a hydraulic cylinder was installed on each side of the front end of the paver. One end of the hydraulic cylinder was connected to the bracket installed on the screed through a steel wire rope. The hydraulic cylinders are controlled by the switches on the main operation console. When the switches are turned on, the hydraulic system will provide each hydraulic cylinder with an oil circuit with a pressure of 5 MPa, generating a persistent 5 MPa pressure at the ends of both sides of the ironing plate, which increases the rigidity of the ironing plate.

Make the centralized lubrication system the standard configuration. The adoption of the renowned BEKA-MAX centralized lubrication system from Germany has greatly reduced the workload of the operators. Its working principle is a progressive working mode, that is, oil is supplied to each lubrication point in sequence.

The working system adopts a 24 V DCEP-1 electrically controlled pump. The grease used is No. 2 lithium-based grease. The pump displacement is 1.8 mL/min, and the applicable ambient temperature range is -30 to +150℃. The lubrication time adjusted at the factory is 20 minutes for every 2 hours of operation. The lubrication time can be adjusted. After the lubrication time reaches 100 hours, the lubrication parameters should be adjusted according to the actual situation. Under the premise of not changing the working interval time of the pump, the lubrication time should be adjusted.

Adopt a digital electronic leveling system. The digital electronic leveling system equipped on the TITAN series pavers adopts the MOBA-matie(CAN bus) digital electronic leveling device. The standard configuration is: 2 digital controllers +2 digital rotation sensors (longitudinal slope)+1 digital slope sensor (transverse slope), which maximally ensures the safety of the system. Due to its modular design, it is conducive to centralized operation of the system and system expansion. Based on CAN and the bus design, users can freely expand any new type of sensor to make the paver's leveling system meet the on-site requirements. When users are carrying out construction, they can either adopt contact leveling devices or choose non-contact leveling devices. When a non-contact leveling device is selected, it is only necessary to add an ultrasonic sliding shoe sensor and a non-contact leveling beam. The digital controllers used by both are interchangeable.

The improved TITAN423 paver, after being used by users, is generally reported to be more convenient to maintain and have a significant improvement in performance.