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Help CenterIntelligent Prestressing Stressing Trolley With Multi-jack Synchronous Control for High-speed Railway Girder
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Product Details
Henan Jinhuaiyu Machinery & Equipment Co., Ltd. presents the Intelligent Prestressing Stressing Trolley with Multi-jack Synchronous Control, a mobile tensioning station for precast girder yards. The trolley carries the jacks to the girder and pulls a group of tendons in one synchronized operation, which is what keeps a symmetric tendon group evenly stressed instead of accumulating the difference that comes from stressing one tendon at a time. Tensioning data is recorded automatically for each group, so the beam yard keeps a traceable result rather than a handwritten sheet, and the trolley moves between beds with the jacks on board so the station is set up in front of the tendon. It is used in high-speed railway, highway and municipal bridge beam yards where the same tensioning sequence is repeated across a run of girders. The trolley is built to order in our Henan workshop, and our engineers have bridge prestressing experience with China Railway project contractors.
Key Features
Multi-jack synchronous control — The jacks in a group are driven together in one operation, so a symmetric tendon group reaches its target force evenly instead of one tendon being stressed ahead of the others.
Automatic data recording — Force and elongation data are captured for each tendon and each stage, so every group leaves a traceable record rather than an entry on a handwritten sheet.
Mobile tensioning station — The trolley carries the jacks and power pack to the girder, so the tensioning station moves to the tendon instead of the jacks being carried by hand between beds.
Tensioning accuracy — Each jack in the group is held to the same target through the pull, which is the condition the stressing record is checked against.
Movement within the yard — The trolley is arranged to work the aisles between casting beds, so it reaches the tendon position without the yard having to be cleared for a crane or a truck.
Overload protection — Pressure and force are limited so the tendon and the jacks are not taken beyond their rated range during a synchronized pull.
Technical Specifications
Parameter |
Typical Value |
Remark |
Type |
Intelligent Prestressing Stressing Trolley |
— |
Jacks |
Multiple jacks with synchronous control ★ |
confirm against actual model |
Control |
Intelligent control with automatic data recording |
— |
Movement |
Yard trolley for movement between casting beds |
— |
Tensioning Force |
Matched to prestressing system ★ |
confirm against actual model |
Application |
Precast beam yard tensioning, high-speed railway girder work |
— |
MOQ |
1 Piece (negotiable) |
— |
Port of Shipment |
Tianjin / Shanghai / Qingdao / All Ports in Chinese Mainland |
— |
Typical Applications
Prestressing tensioning in precast girder beam yards
High-speed railway girder production lines
Highway and municipal bridge beam yards
Standard beam yards running the same tensioning sequence repeatedly
Multi-tendon symmetric tensioning operations
Why Choose Us
Stressing a group of tendons one at a time leaves a difference between them, and on a symmetric girder section that difference is what the tensioning record is judged on. Synchronous control pulls the group together, so the tendons reach their target as a group rather than accumulating the error of the sequence. Carrying the jacks on a trolley turns tensioning into a station that is set up in front of the tendon and moved on to the next one, which suits a beam yard producing girders to a repeating programme. The data is recorded automatically for each group, so the quality file is produced as the work is done rather than reconstructed afterwards, and our engineers have bridge prestressing experience with China Railway project contractors.
Company Profile
Henan Jinhuaiyu Machinery & Equipment Co., Ltd. is a manufacturer of prestressing and concrete construction equipment for bridge engineering, established in 2025 and based in Henan, China, with a 1,000-3,000 square meter workshop and 51-100 employees, including 5-10 quality inspectors and 11-20 sales staff. Intelligent stressing trolleys and tensioning systems are a core product line, alongside tensioning frames, pipe pulling machines, grouting systems and concrete pumps, and the company has worked with China Railway project contractors including China Railway Beijing Engineering Group, China Railway 14th Bureau Group and China Railway No.2 Group. Quality control covers raw material checking, in-process inspection and finished-product testing, with key components and welding closely monitored and every machine tested before delivery. Customized manufacturing and OEM/ODM are available, operation manuals are supplied in Chinese and English, factory inspection is welcome, and small-batch as well as bulk orders are accepted. Inspection records and bilingual export documents can be provided.
FAQ
1. What does multi-jack synchronous control change about the job?
It pulls the tendons in a group together in one operation instead of one after another. On a symmetric girder section, stressing tendon by tendon leaves a difference between them, and holding the group to the same target at the same time is what removes it.
2. Why is automatic data recording important?
The stressing record is what the tensioning operation is judged on. Capturing force and elongation automatically for each tendon and stage produces that record as the work is done, instead of an entry written up afterwards from the readings.
3. How many jacks can one trolley carry?
The jack count is set by the tendon group you stress and the girder type, so it is selected against your tensioning scheme. Tell us the strand specification and the number of tendons stressed together and we will propose the configuration.
4. How does the trolley move in the yard?
The trolley works the aisles between casting beds and carries the jacks and power pack with it, so the station is set up in front of the tendon and moved on to the next bed. The yard surface and aisle width are worth mentioning at enquiry stage so the arrangement suits them.
5. What is the MOQ and lead time?
MOQ is 1 piece and is negotiable depending on configuration. Lead time is confirmed in the order acknowledgement and depends on jack count, trolley configuration and options; customized units are scheduled with clear milestones and followed through production, testing and documentation.
6. Is it tested before delivery?
Yes. Quality control covers raw material checking, in-process inspection and finished-product testing, and every machine is tested before delivery, including a functional test of the synchronized tensioning and data-acquisition cycle. Inspection records and bilingual export documents can be provided.
7. Does the trolley work with the tensioning system we already have?
The trolley is built around the jack group and control system for the job, so it is configured to your tensioning scheme rather than to a fixed set. Send us your tensioning method statement and we will confirm the arrangement, including whether an existing control system can be carried over.
8. How is it packed for export?The trolley, jacks and control cabinet are packed as separate protected assemblies so they can be handled with normal yard equipment and commissioned on site. Packing and container planning are confirmed with the order.
9. Can it be customized and can we inspect it before shipment?
Yes. Jack count, tonnage, trolley arrangement, data output and control configuration can all be customized, and OEM/ODM is available. We welcome factory inspection before shipment, and a third-party inspector can attend the pre-shipment test if your project requires it.
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