| After-sales Service: | 1 Years |
|---|---|
| Warranty: | 1 Years |
| Type: | Hydraulic |
|
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1. Stowage calculation and stowage vehicle layout
In order to ensure the overall force and synchronous lifting of the one-hole bridge, the weight of the upper structure such as the bridge floor, middle beam, side beam and guardrail should first be calculated according to the design document, and then the load is loaded according to the principle of overall weight balance, usually the vehicle is evenly arranged and loaded to ensure the balance of the force during the lifting process.
2. Main construction materials and equipment
Mechanical name: generator set, welding machine, hydraulic station, unidirectional ultra-thin jack, dial indicator, manual jack, loading vehicle, lifting basket frame, gas cutting equipment, hydraulic distribution equalizer, high pressure distribution oil pipe.
| Model | Safe working load | Working pressure MPA |
Cylinder stroke mm |
Retraction height mm |
Jack weight KG |
Fixed anchor weight KG |
Speed m/h |
Number of strands | Strand diameter mm |
| SFST-TSD45 | 45 | 31.5 | 500 | 1726 | 600 | 28 | 0-25 | 3 | 18 |
| SFST-TSD60 | 60 | 31.5 | 500 | 1726 | 630 | 32 | 0-25 | 4 | 18 |
| SFST-TSD100 | 100 | 31.5 | 500 | 1790 | 930 | 46 | 70-25 | 7 | 18 |
| SFST-TSD180 | 180 | 31.5 | 500 | 1886 | 1560 | 90 | 0-25 | 12 | 18 |
| SFST-TSD280 | 280 | 31.5 | 500 | 1938 | 2330 | 130 | 0-25 | 19 | 18 |
| SFST-TSD300 | 300 | 31.5 | 500 | 1940 | 2460 | 140 | 0-25 | 20 | 18 |
1. Flat jack method
The ultra-thin hydraulic jack is placed in the narrow space of the main beam and the cover beam, and the beam body is directly lifted, and the rising speed of the beam body is observed by the dial indicator to ensure the uniform and synchronous lifting of the beam body across the bridge. This method is currently the most widely used jacking method.
2. Saddle type support method
The bridge pier itself is used as support to set up a support on the cover beam, which is designed as a "saddle-type support", and a jack is placed to lift the beam body.
3. Sleeper full support method
Sleeper is arranged on the ground, and on the basis of sleeper, a fully distributed or partial wooden support is arranged on the bridge beam body, and a one-catty top lifting beam body is placed on the support.
4. Saddle bracket method
The bridge pier itself is used as support to set up a support on the cover beam, which is designed as a "saddle-type support", and a jack is placed to lift the beam body.Bridge jacking synchronous jack characteristics:
Bridge maintenance, bridge jacking and bearing replacement
Hoisting, descending and weighing of heavy structures
Center of gravity measurement, reinforced support/load transfer from temporary support to fixed support
Heavy equipment installation, bridge section jacking and box jacking.
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