Most factories often encounter problems such as tilting of long workpieces during hoisting, low transportation efficiency and high costs of repeated equipment procurement when using single-trolley cranes. A conventional single-trolley overhead crane can only lift one cargo at a time, making it difficult to keep workpieces balanced when hoisting oversize raw stones, steel beams and large molds with offset centers of gravity.
The double-trolley overhead crane, also known as the LHE double-hoist overhead crane, is a customized lifting equipment independently developed by Henan Mine Crane. A single main beam is equipped with two independently travelling trolleys, each fitted with a complete wire rope electric hoist. It supports two operation modes: independent lifting and PLC synchronous linkage, which perfectly solves the pain points of hoisting complex materials in workshops.
Five Core Advantages of Henan Mine Double Trolley Overhead Crane
Synchronous lifting ensures stable operation and cuts material scrap losses
Equipped with PLC variable-frequency synchronous control, the lifting error is controlled within ±5 mm. Balanced two-point lifting prevents tilting, twisting and severe shaking when hoisting long stone slabs, steel materials and moulds, greatly reducing scrap losses caused by unbalanced single-point lifting.
Dual operation modes reduce equipment procurement costs
A single machine delivers two material handling functions: synchronous mode for hoisting heavy oversized workpieces, and independent mode for lifting two cargo units simultaneously. Factories do not need to purchase two separate overhead cranes, saving workshop floor space and equipment procurement budgets.
Adjustable hook spacing for enhanced versatility
Two trolleys can move freely along the main beam, allowing flexible adjustment of hook spacing according to workpiece lengths. It fits short plates as well as 15-meter ultra-long steel beams. In contrast, single-trolley double-hoist overhead cranes feature fixed hook spacing with limited applicable scenarios.
Load sharing eases load-bearing pressure on workshops
The total weight of workpieces is shared by two trolleys, with each hoist bearing only half the load. This lowers wheel pressure on workshop roof steel beams and ground foundations, eliminating the need for large-scale civil reinforcement during renovation of old workshops.
Complete safety protection systems and full export certifications
Fitted with dual overload protection systems, upper and lower limit switches, anti-collision devices and emergency stop buttons. Henan Mine double-trolley bridge cranes come with full CE, ISO and TSG certifications, meeting testing standards for global export projects. With standardized regular maintenance, the whole machine can achieve a service life of 10 to 20 years.
Custom parameters required for quotation acquisition
If you need a customized solution for double-trolley overhead travelling cranes, please provide the following information to facilitate precise design:
- Matching hoist tonnage (3t+3t, 30t+30t up to 300t+300t)
- Workshop span, total trolley travel length, effective lifting height
- Maximum workpiece length and single-piece weight
- Control mode: wired pendant, wireless remote control, cabin control
- Work class A4/A5/A6, daily operation frequency
- Special working conditions: high dust, low headroom workshop, customized export voltage
If your factory has demands for stable hoisting of ultra-long, oversized and eccentric workpieces, professional engineers from Henan Mine can calculate load-bearing capacity for you and provide exclusive drawing schemes for double-trolley overhead traveling cranes. Send us your workshop dimensions, hoisting tonnage and workpiece parameters to get a preferential direct supply quotation from the manufacturer. We offer one-stop services covering production, delivery and installation.
Chloe
Tel: +86 18238799707 (Same number for WhatsApp)
Email:sales07@minehenancranes.com
FAQs
Q: What are the differences between a double-trolley overhead crane and a single-trolley double-hoist crane?
A: A double-trolley crane is equipped with two independently movable trolleys with adjustable hook spacing, suitable for workpieces of varying lengths. In contrast, the hook spacing of a single-trolley double-hoist unit is fixed, and it can only lift materials of a fixed size.
Q: Can the two trolleys separate to lift two loads simultaneously?
A: Yes. The independent operation mode improves workshop handling capacity. The two trolleys operate without mutual interference and can complete two lifting tasks at the same time.
Q: What is the overall service life of a double-trolley overhead crane?
A: With monthly lubrication and regular inspection and maintenance, the whole machine can operate stably for 10 to 20 years.