Can be customized accroding to your needs.
Can be customized accroding to your needs.
| Use more convenient and durable NDI polyurethane rubber coated wheels in straight tunnels
The application of NDI polyurethane coated wheel.
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Created:
2021-01-21 15:54
The connection between the wheels of the shield machine trolley and the main frame of the shield machine is usually fixed by bolts. Each wheel set is equipped with two front and rear wheels, which are fixed together by the wheel box. The wheel set on each trolley Located on the same straight line, this type of wheel set arrangement is more convenient to use in a straight tunnel, but at the turn of the tunnel, the track has a certain curvature, because the body of each trolley is longer, and there are multiple sets of wheels installed on the bottom of the trolley. When the group is driving in a tunnel curve, because the turning arc of the track has a certain torque force on the wheels, the wheel group is easy to derail, causing safety accidents and causing unpredictable damage to the equipment and personnel in the tunnel; in addition, the shield machine The front end belongs to the tunneling discontinuous displacement, that is, when the shield machine digs a segment width, the shield machine will only drag the trolley behind to advance a segment width distance. Therefore, if the trolley stays at the turn of the tunnel for a long time , The torque force between the wheel and the track always exists, which causes static fatigue damage to the wheel and the track at the same time, which causes the wheel and the track to deform, and increases the risk of derailment when the trolley is running. Therefore, the wheel of the shield machine trolley, whether it is the support frame, axle or wheel, has higher requirements.
Can be customized accroding to your needs.
Can be customized accroding to your needs.