Second Hand Concrete Equipment
Company advantage
Many devices
We have sandblasting machines, laser CNC machine tools, drilling machines, automatic welding robots, electronic CNC rolling machines and other machining equipment.
High-quality supporting suppliers
Our company has BHS, SICOMA, WAM, Siemens, Schneider, Toledo, Airtac, ABB and other suppliers.
Rich experience
We have 15 years of experience in OEM concrete mixing plants. Strict quality control and refined cost control have resulted in high-quality, low-priced concrete production lines.
Many production lines
We have designed more than 20 concrete production lines, including new generation concrete mixing plants, mixing plants, and precast concrete mixing plants.
What is Second-Hand Concrete Equipment
Second-hand concrete equipment refers to a variety of machinery and tools that have been previously used in concrete construction projects. These pieces of equipment are carefully inspected, renovated if necessary, and made available for resale or hire.
Buying used equipment can be a cost-effective solution for businesses looking to expand their operations without incurring the high costs associated with new machinery.
Reliability and performance are paramount in the construction industry. Used equipment offers a practical way to meet these needs without breaking the bank.
From generators to silos, each piece of equipment plays a crucial role in ensuring that construction projects are completed efficiently and on time. Investing in used equipment not only saves money but also supports sustainable practices by extending the life cycle of valuable machinery.
Equipment Age: The year of manufacturing defines the equipment's age. If handled with care, age does not significantly affect its lifespan and performance.
Hours of Operation: The number of hours the machine has been used gives an indication of its technical condition. Extensive use increases the likelihood of wear and tear.
Overall Condition: Over time and with heavy-duty tasks, the performance of used equipment may deteriorate. Physical signs of damage can indicate errors or accidents.
Maintenance Record: A well-maintained upkeep record reflects a careful attitude towards the equipment’s maintenance and overall well-being.
Upgrades or Modifications: Some used equipment may require immediate adjustments to improve performance, efficiency, or safety.
Compliance with Regulations: Ensure that the used machine complies with relevant safety codes and regulatory standards.
Warranty or Guarantee: Warranties provide security for the buyer, ensuring that the equipment is genuine. Guarantees also enhance the credibility of suppliers.
Fair Price: The cost of used equipment should be reasonable, considering its age and condition.
Concrete Batching Plant: Also known as a concrete plant, this equipment mixes various materials to form concrete, including sand, aggregate, slag, cement, fly ash, and water. Concrete batching plants come in different types:
●Dry mix concrete plant
●Wet mix concrete plant
●Mobile concrete plant
●Stationary concrete plant
Mobile plants are used for temporary site projects and those requiring less concrete, while stationary plants are used for large-scale projects like ports, bridges, tunnels, dams, and large buildings.
Concrete Pump: A concrete pump transports liquid concrete from the production area to the casting area. It works by using one piston to draw concrete from the source and another to push it into the discharge pipe. There are two types of concrete pumps:
●Line concrete pumps: Typically used for small construction projects with a line pump attached to a truck.
●Boom concrete pumps: Used for large projects, as they can pump concrete to various heights and lengths, making them ideal for multi-level buildings and bridges.
Concrete Mixer: This equipment mixes cement, aggregates, and water to create concrete. Unlike a batching plant, which is part of a whole production line, a concrete mixer is usually a single machine. Concrete mixers can produce concrete either by batch or continuously:
●Batch mixers: Ideal for small projects where concrete is not in constant demand.
●Continuous mixers: Suitable for large projects like roads, bridges, and dams.
Concrete Vibrator: Concrete vibrators are used to remove air bubbles from freshly poured concrete, which can cause holes and affect integrity. Internal vibrators are commonly used for their cost-effectiveness and flexibility, while external vibrators are more suitable for vertical constructions like walls.
Concrete Paver: Also known as a paver or paving machine, this equipment lays asphalt concrete on roads, parking lots, bridges, and other surfaces. It facilitates continuous pouring and leveling, ensuring uniform thickness.
Concrete Tank: Concrete tanks are used to store concrete on construction sites. They are often installed on higher ground and have pipes at the bottom for the concrete to flow through to the site.
Concrete Crusher: Although not typically used for construction, concrete crushers are employed in demolition to recycle waste concrete. This reduces waste, reuses high-quality aggregates, and minimizes environmental impact.
Concrete Conveyor: A concrete conveyor is a type of conveyor belt that moves concrete horizontally or vertically over limited distances. It is often a cost-effective alternative to cranes and other equipment.
To maximize the efficiency and effectiveness of concrete equipment, follow these best practices:
Proper Training
Ensure that all operators are properly trained in using the equipment. This includes understanding safety procedures, operating instructions, and maintenance requirements.
Regular Maintenance
Perform regular maintenance on all concrete equipment to prevent breakdowns and extend their lifespan. Follow the manufacturer’s guidelines for maintenance schedules and procedures.
Safety First
Always prioritize safety when using concrete equipment. This includes wearing appropriate personal protective equipment (PPE), following safety protocols, and being aware of the surroundings on the job site.
Correct Usage
Use the equipment as intended and avoid overloading or pushing it beyond its limits. Misuse of equipment can lead to accidents, damage, and subpar results.
Efficient Planning
Plan the use of concrete equipment to minimize downtime and ensure smooth workflow. This includes scheduling equipment usage, coordinating with other trades, and having backup plans in case of equipment failure.
Working Principle of a Concrete Batch Mix Plant
A concrete batching plant follows a systematic process to produce ready-mix concrete. The production process begins with the individual weighing of different materials, followed by the mixing of all components in a mixer. The steps involved in this process are:
Feeding of the Aggregates: Different bins accommodate aggregates of various sizes. Each bin is designated for a specific aggregate size to ensure accurate weighing.
Aggregate Weighing: Aggregates are weighed individually as they fall onto a weighing conveyor. The weighing conveyor is suspended on load cells, allowing it to weigh aggregates one by one effectively.
Aggregates Transfer: After weighing, aggregates are transferred to the mixing unit. The aggregate weighing conveyor discharges the weighed aggregates into the mixing unit for combination with other substances.
Cement Addition: Cement, a key binding material, is stored in a silo, which is equipped with safety accessories but does not include a weighing function. Cement is transferred from the silo to the weighing unit via a screw conveyor.
Cement Weighing: Cement is weighed in a separate chamber known as the cement weigh hopper. This unit, suspended on load cells, provides accurate weight readings. The cement weigh hopper receives cement from the silo and discharges the required quantity into the mixer after weighing.
Water Weighing: Similar to cement, water is weighed in a separate hopper near the cement weigh hopper. This hopper, also suspended on load cells, measures the precise amount of water before adding it to the mixing unit.
Additive Addition: Various additives can be incorporated into the mix as needed. The plant is equipped with an additive bowl suspended on load cells, following the same principle as cement and water weighing to ensure accurate addition of additives to the mixing unit.
Components of a Concrete Batch Mix Plant
A concrete batch mix plant consists of several parts and accessories that work together to produce quality concrete. The major components include:
Aggregate Feeders: The feeding unit is crucial. Bins are located side by side to facilitate the feeding of coarse aggregates and sand. The bins hold different sizes of aggregates or sand in separate compartments. This separation allows for the weighing of each material according to the designated mix ratio.
Aggregate Weigh Conveyor: The weigh conveyor, usually positioned below the aggregate feeders, is suspended and supported by load cells. It weighs aggregates individually and then transfers them to the charging conveyor or skip. Aggregates are discharged onto the weigh conveyor through pneumatic cylinders.
Charging Conveyor / Skip: The charging conveyor or skip transports the weighed aggregates to the mixing unit.
Cement Weigh Scale: The cement weigh scale holds a small quantity of cement transferred from the cement silo or hopper via a screw conveyor. It weighs the cement before dispatching it into the mixing unit.
Water Weigh Scale: The water weigh scale receives water from a water pump. It holds and weighs the water according to the recipe set in the control panel before adding it to the mixing unit.
Additive Weigh Scales: These scales, suspended on load cells, weigh additive materials before they are added to the mixer.
Cement Silo / Hopper with Screw Conveyor: The cement silo stores large volumes of cement delivered by bulk trucks and is equipped with safety accessories. A screw conveyor at the bottom transfers cement into the cement weigh hopper. Smaller batching plant machines often use a cement hopper with a large opening for adding bagged cement. Cement hoppers also have screw conveyors for transferring cement to the weigh hopper, which typically has two openings on top for two screw conveyors.
Mixing Unit: This is the most critical component of the concrete batch mixing plant. The mixer receives all ingredients, mixes them thoroughly for a fixed time, and then discharges the contents into a transit mixer or concrete pump.
Air Compressor: The air compressor controls all pneumatic operations of the concrete batch mixer, such as the opening and closing of cylinders that control feeder gates, butterfly valves fitted with weigh hoppers, and the mixing unit gate.
Control Panel: The control panel manages the operation of the machine. Modern machines are equipped with a PLC panel for ease of use. It allows for the saving and printing of mix material recipes and assists in fast and accurate measurements of ingredients. As demand for high-quality and accurate concrete increases, the control panel helps ensure the production of quality material without wastage by managing all components of the batching plant.
Our Factory
Since 1998, Jinheng Machinery has been focusing on the design and production of the concrete mixing industry. Covering an area of 360000 square meters, it has two major production bases (Qingdao and Zhengzhou) and is divided into two business units (wet mixing and dry powder), with over 150 employees.
