固定系统

SEE-SD

SEE-SD 扣件系统是 SD 扣件系统的塑料底板版本，可嵌入到新浇筑的混凝土中或通过湿法浇筑。

轨道扣件可提供足够的回弹性（刚度），以减弱混凝土板振动并为轨道位置提供较大的垂直调节范围。 该系统为搬运和安装提供了轻巧的解决方案，并且可以预先组装好，以便与自动底板铺设设备一起使用。

Pandrol SD-SEE product overview

Pandrol’s SD-SEE is ideal for use on concrete slab tracks in tramway and urban rail applications, where light structures and fast construction is needed.

  • As well as being extremely lightweight, the fastening system naturally yields high electrical insulation
  • The SD-SEE System offers a particularly wide range of both vertical and lateral rail adjustment
  • The assembly can be configured to suit a range of requirements for stiffness and clamping force. It can be installed using all typical concrete slab track construction methods
  • As well as meeting the needs of so called ‘Appitrack’ construction

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Benefits of Pandrol SD-SEE

01

Low maintenance

The SD-SEE System enables vertical adjustments to be made quickly, easily and without the need to fully disassemble the fastening. Minimal additional parts are needed; just rail shims and longer screws in extreme cases.

02

Money saving

The pre-assembled captive fastening units and the simple ‘switch on / switch off’ function mean that very high rates of track construction and maintenance can be achieved. In turn, this results in huge savings in labour, as well as reduced distribution and handling costs during the whole lifecycle of the system.

03

Less labour

The lightweight SD-SEE assembly can easily be carried and positioned by one person, saving on labour time and costs.

04

Reduced corrosion risk

As the SD-SEE System has minimal metal components, the risk of corrosion is very low. This makes it an attractive option for ensuring long service life in wet track conditions, such as tunnels or installations close to the coast.

Technical features of Pandrol SD-SEE

01

Pre-assembled units

The SD-SEE System is usually supplied as captive, pre-assembled units that are ready for top-down track construction methods.

02

‘Switch on / switch off’ function

The SD clip can be moved simply and quickly from the ‘parked’ position (in which it is held securely without intruding into the rail seat) into the ‘service’ position. With the screw loosened, the clip is simply pushed from one position to the other to either clamp the rail or release it.a

03

Electrical insulation

The SD-SEE baseplate and insulators are made of plastic that provides an exceptionally high level of electrical insulation all around the rail.

04

Embedded baseplate

The baseplate is partially embedded in the concrete to withstand the lateral and longitudinal loading. Clever engineering allows trapped air and water to escape, ensuring a solid fill of concrete under the rail seat.

05

Direct fastening

SD-SEE is a direct fastening system – the means-by which the rail is attached to the baseplate is the same as that attaching the baseplate to the supporting base structure.

06

Track-structure interaction

The SD clips are available in low toe load and a zero longitudinal restraint (ZLR) configuration, typically for use on bridges and viaducts when track-structure interaction effects need to be dealt with in the rail fastening assembly.

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