The large-volume mixing drum provides a huge mixing room, which makes the transportation of concrete with low-slump or large-size aggregate possible.
       The mixing blade is made of anti-wearing material, and reinforcement strip welded to the edge guarantees a long service life. Optimize designed blade helps to improve the uniformity of concrete, enhance the charging and discharging speed, and decrease discharging remainder.
        The auxiliary frame is of trunk structure features high rigidity, which improves the anti-torsion ability and achieves greater durability.

        Closed circuit hydraulic system comes with components chosen from famous brands worldwide ensure the machine’s performance and efficiency.

        Water supplying system comes with an electrical water pump can produce great pressure and flow. Multi-points water supplying makes the cleaning convenient.

        Original imported chassis features powerful engine and good climbing ability, is compatible with Euro I emission standard.

         Optimized outline design.

Excellent mixing performance：

         The compulsory double-shaft mixer from SICOMA Company features strong mixing ability, uniform and efficient mixing effect, high productivity. Maximum aggregate diameter is up to 150mm in size. All dry hard or plastic and various kinds of concretes are available.

High reliability：

         Lining board and mixing blades of mixer are processed specially. Unique shaft-end supporting and sealing form are used to offer a long service life. The imported components in main electric control system remarkably reduces failure rate of facilities.

Good maintainability：

          Each maintenance part of the whole unit is provided with a walkway or examination ladder, good visibility and sufficient operating space. Mixing plant is fully enclosed, which guarantee all operation can be carried out despite of wind or rain.

Convenient transferring installation：

           Overall structure is of modular design. Batcher, belt conveyor, main mixing plant, spiral conveyor and silo are all independent to each other. The main mixing plant consists of several independent modules. It is quick to both disassemble, and install, and is convenient and simple to transport when transferring.   

Simple operation：

          The whole equipment controlled by computer system can be operated either automatically or manually, easy to handle. With a dynamic display, it’s possible to monitor each operation, and production reports can be stored and printed simultaneously.

Environment friendly：

            All powder materials are fed, batched, metered, replenished, mixed and discharged in a sealed state. The sophisticated degusting system and fully-enclosed aggregate belt conveyor in the main plant greatly reduce the harm produced by dust and noise.

 Precise metering：

            Components for metering and control of aggregate, powder and water are imported, controlled by microcomputer, sampling frequency of more than 120 times each second, completely guarantee steady operation and precise performance of system

Control system：

         As far as composition of system is concerned, this electrical control is double backup, that is, industry computer is primary in the system, which either automatically controlled or manually operated. The industry computer controls the periphery drives after sampling, calculation and process. This system can automatically control free fall, print reports. Data records can be permanently saved, up to more than 30,000 formulas, all production phases and problem diagnostic can be displayed dynamically.

Industry design:

          Proximity switch used to control the direction of the main pumping makes changeover steady and reliable.

          Main components of the hydraulic system are supplied by famous brands in the world. The equipped special safety devices, such as relief value, pressure cut-off control, alarming system and auto-reversing etc, promise the system to be more reliable than ever

         Driven by the constant pressure pump with an accumulator, the swivel cylinder can get enough moment, and save power at the same time.

         All imported seals kits can ensure higher reliability and have a longer life time than ever.

         With the electrical solenoid or hydraulic direction valve, the switch from high pressure to low pressure becomes easy and quick operates. There is less hydraulic leakage than the other domestic products.

Electrical system:

         Comes with a Programmable Logic Controller (PLC), which takes the place of many relays, time relays, which not only greatly reduces components but also simplifies wiring in the system, ensures a higher reliability. In combination with PLC, a visual display can indicate the status of inputs and outputs, lead to an easier troubleshooting.

         90% of the electrical components come from the world-class brands, which guarantees high reliability.

          Equipped with remote controller, of which Zoomlion possess the intellectual property, makes it convenient to operate from a long distance.

           For saving fuel, the engine speed will drop to idle automatically after auto-pumping having stopped for a few seconds.

          Fitting the proximity switches can realize automatically direction changeover, which ensures a reliable switching

Mechanical system:

         During the designing of key parts , such as “S” pipe distribution valve、hopper, software I-DEAS is adopted to realize Finite Element analysis of load distribution, construction rigidity and stress concentration. Owing to its excellent rigidity and process technology, the optimized hopper and “S” valve system can effectively avoid the following phenomena like hopper distortion and breakage of “S” piping valve shaft during high pressure conveying.

          By a special design on sealing structure of agitator, hydraulic motors are completely separated from bearing seats, even under the situation of sealing failure, the slurry has no chance to get into motor. High-- torque motors ensure high mixing torque. Thanks to the auto-reversing device and anti-wearing blades, the blockade will never happen even when the size of aggregate is not ideal.

         The wearing parts, such as the anti-wearing plate and the cutting ring, have a long service life up to 20000m³ if under favorable condition.

         The distance between the anti-wearing and the cutting ring automatically compensates for “cutting” wear and seals by its adjustment.

Driven system:

          Deutz Diesel engines, Equipped with electronic accelerator device.

Lubrication system:

       The patented central automatic lubrication system comes with a piston grease-pump, features high pressure and reliability, which can realize automatic lubrication of piston. The filters at the outlet and the inlet of oil ports as double protections guarantee the system reliability.

Cooling system:

         Compulsory air-cooled heat exchanger keeps the temperature of the hydraulic oil below 60℃，that ensures the whole hydraulic system works at normal status.

Cleaning device:

          Equipped water pump makes the cleaning and maintaining an easy job.

The Chassis

ZLJ Series of Truck-Mounted Concrete Pump’s performance

       ZLJ Series of Truck-Mounted Concrete Pump are heavy-duty construction machines for conveying, spraying, & placing concrete.  The vehicle chassis of Swedish VOLVO FM12 and Japanese ISUZU CXZ or CXH, which can supply enormous power, have the advanced engine that its exhaust emission are according with EuroⅢ and EuroⅡ respectively. The structure of boom and outrigger are robust enough, can satisfy the jobsite demand of high efficiency and wider working range. The close hydraulic pumping circuit comes with high-pressure and large- displacement hydraulic pump. There are two kinds of distributing system on your request, “S” valve or “Gating” valve, both types have great sucking ability and high reliability.

        The main components are all from international famous companies, such as hydraulic units of REXROTH, HAWE, gear-box of STIEBEL, remote controller and other electric component chosen from the most famous brands in the world. And various safety devices are equipped on the machine to ensure the machine’s security. For example, pressure valve for hydraulic pump, balance valves on each boom cylinder, shock-proof maximum pressure valve on rotating head, blocking valve for the outrigger cylinder, interlock control in electric control system preventing of fault operation. All of them ensure high quality of ZLJ series of truck-mounted concrete pumps.

      The main hydraulic and electric components are using world-renowned products.

       The concrete delivery hose compatible with DIN24118 criterion are of cast anti-wearing bend pipelien.

        Fully hydraulic driven.

      The devices preventing concrete disaggregation which may result in pipeline blockade helps to improve performance and prolong lifetime of the elbows.