【This Week's Topic】
There are three mainstream shuttle vehicles.
Which one is the most suitable for your warehouse?
This week's technical expert: Shi Jian
The shuttle vehicle, as a core equipment that has attracted much attention in the field of warehouse automation in recent years, has become the mainstream choice for dense storage systems. With various technical routes such as two-way, mother-child, four-way and six-way shuttle vehicles, many enterprises often find it difficult to make a decision when planning. In the numerous project practices of Sunli Intelligent, the most frequently asked question by customers is: "Which type of shuttle vehicle is the most suitable for our business?"
Sunli Intelligent's self-developed mainstream shuttle vehicle
To help enterprises clarify their selection strategies, Sunli Intelligent, leveraging its rich project implementation experience, starts from the actual business needs and conducts in-depth analysis of the technical features and applicable scenarios of various shuttle vehicles, assisting you in making scientific and precise decisions in your warehouse planning.
Two-way shuttle vehicle:
A cost-effective and reliable choice
Sunli Intelligent's self-developed two-way shuttle vehicle
Sunli Intelligent Case: Tengyuan Cobalt Industry
The core feature of the two-way shuttle vehicle lies in its ability to move only in a straight line forward and backward within the tunnel, and it cannot autonomously change tunnels or floors. This type of vehicle is mainly suitable for single-column storage scenarios that strictly follow the first-in-first-out, last-in-last-out, or no-batch management requirements. Although its functions are relatively simple, it is precisely this focus that gives it the significant advantages of strong environmental adaptability, low failure rate, and high cost-effectiveness.
Sunli Intelligent Case:
Two-way Shuttle Car + Palletizer Port Connection
The advantages and disadvantages of the two-way shuttle vehicle are quite distinct.In scenarios with a large number of aisles or high operation frequency,the overall efficiency will be somewhat limited due to the need to frequently wait for external equipment to cooperate.However,if your warehouse meets the following characteristics,the two-way shuttle vehicle will be an extremely competitive choice:
Cold storage and cold chain warehousing:It can operate stably in an extremely low temperature environment of-40℃;
Full-load entry and exit scenarios:Suitable for warehouses where raw materials and finished products are mainly transferred in full loads,the straight-line operation mode can fully meet the efficiency requirements;
Moderate aisle size:In systems with a small number of aisles(usually less than 10),it operates smoothly and efficiently;
Budget-sensitive projects:As the most technologically mature and cost-friendly solution,it can provide a stable and reliable starting guarantee for the construction of warehousing automation.
Mother-son shuttle vehicle:
An advanced solution with medium throughput capacity
Sunli Intelligent's self-developed mother-child shuttle vehicle
The mother-son shuttle vehicle can be regarded as an upgraded version of the two-way shuttle vehicle.This system adds a mother vehicle that can move laterally on the main track to the basis of the two-way vehicle.The mother vehicle is responsible for transporting the son vehicles to different tunnel entrances,and then the son vehicles enter the tunnels to complete the storage and retrieval operations.This design effectively solves the bottleneck where the son vehicles rely on forklifts or elevators to change tunnels.
It should be noted that the mother vehicle and the son vehicle need to maintain close coordination.If the operation density is too high,it is prone to situations where the son vehicles are busy in the tunnel while the mother vehicle is waiting outside,or where the mother vehicle is transporting while the son vehicle is idle.Therefore,this system is more suitable for warehouses with stable operation rhythms rather than scenarios with highly fluctuating orders.
The mother-son shuttle vehicle can fully demonstrate its value in the following scenarios:
Multi-tunnel warehouses:Suitable for systems with dozens or even hundreds of tunnels.The collaborative operation of the mother vehicle and the son vehicle can significantly improve the overall efficiency compared to the two-way vehicle;
Medium throughput scenarios:Facing daily inbound and outbound storage demands of hundreds of pallets,this system can avoid capacity waste and ensure smooth operations;
Warehouses with many SKUs and stable batch sizes:In retail and manufacturing industries,it can balance storage density and operational flexibility,and has excellent cost performance.
Four-way shuttle vehicle:
A model of balancing flexibility and cost
Sunli Intelligent Case: China Resources Pharmaceutical
Sunli Intelligent Case: Zhongxin Auto Parts
The four-way shuttle vehicle has the ability to freely move forward,backward,left and right within the horizontal plane,and can switch between lanes independently without the need for external equipment assistance.When used in conjunction with the elevator,the four-way shuttle vehicle not only can move freely within a single-layer shelf but also can perform cross-layer operations.Working together,they can make the shelf layout more compact and further increase the storage height.
The advantages of this combined solution are significant:
High space utilization:The warehouse layout is no longer restricted by fixed lanes,and the space utilization rate is increased by 30%to 50%compared to two-way vehicles and mother-daughter shuttle vehicles;
High system redundancy:Multiple four-way shuttle vehicles can operate simultaneously.In the event of a single equipment failure,other vehicles can bypass and continue to operate,avoiding the paralysis of the entire lane.
The four-way shuttle vehicle is applicable in a wide range of scenarios,especially suitable for warehouses with a high proportion of unpackaged picking,such as e-commerce,retail,and pharmaceuticals,as well as scenarios with fluctuating orders.To cope with the differences in traffic during daily and promotional periods,the number of vehicles can be flexibly increased or decreased.
If your business scenario does not fall within the exclusive domain of two-way vehicles or mother-daughter shuttle vehicles,and you wish to strike the best balance between flexibility and cost,"four-way shuttle vehicle+elevator"is the most recommended solution.This solution demonstrates outstanding comprehensive performance in most application scenarios.
Sunny Intelligent Selection Recommendation
To facilitate a clear comparison, the following reference table for shuttle vehicle selection has been compiled:
In the construction of warehouse automation,there is no absolutely perfect equipment;only the most suitable solution for the business exists.If your business mainly involves cold storage and full pallet storage,and can strictly follow the batch management requirements,the two-way shuttle vehicle is a practical choice;if you face frequent unpacking and picking demands,the efficiency improvement brought by the four-way shuttle vehicle will quickly cover the cost premium.
Sunli Intelligent not only offers a complete set of self-developed high-quality shuttle vehicle products and solutions,but also focuses on addressing business pain points,customizing the most optimal automated warehouse solutions for enterprises in various industries.Ultimately,it enables more scientific and reasonable intelligent logistics technologies to continuously create value for enterprise customers and enhance their overall competitiveness.
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