Introduction
Tunnel lining trolley it was based on the motor drive travel mechanism to drives the trolley running. As a tunnel concrete molding machine which effect is adjusted the formwork right and formwork removed by hydrocylinder with screw jack. Tunnel trolley is widely used for highway, railway bridge construction,inter-city subway and public works. The tunnel trolley is includes three sizes 6m,9m and 12m. Which was travelling, effective support forms and form removal by the hydraulic system.
Product Description
Tunnel trolley generally adopts full hydraulic operation and automatic walking to improve work efficiency, reduce the working strength and ensure the quality of lining. In order to meet the requirement of the construction site, we can produce variable section multifunction tunnel trolley with consumers' design, which would be convenient operation and reliable performance.
In order to prevent the on site installed trolley from rusting before using, we make a special treatment on the surface of the formwork, so that the trolley could keep as bright as ever and the lining surface of concrete is flat and smooth.
Tunnel lining platform trolley(tunnel trolley for short) is a construction equipment for tunnel second concrete lining. Matched with other auxiliary machinery, it could greatly reduce labor force, improve the mechanical efficiency of the tunnel second lining construction and improve the construction schedule. It has the advantages of low cost, reliable structure, convenient operation, good tunnel molding surface etc and widely used in highway, railway, water conservancy & hydropower project, municipal, national defense industry construction and other constructions.
According to the different tunnel section and different construction, tunnel trolley could be divided into the side & roof arch, fully round acerate-beam type, fully round through type, the bottom platform needle-beam type, lifting sliding formwork, rolling formwork etc. According to the actual requirements, the consumer could select full hydraulic self-walking type, full hydraulic driven-walking type, mechanical large platform type, combined platform type etc. According to the tunnel length and the construction period, the consumer could choose the length of tunnel trolley with 6 meters, 7.5 meters, 9 meters, 10.5 meters or 12 meters
The pier is the support of the bridge which is one of the most types for bridges formwork it was often composed by pier body formwork and pier cap formwork. Generally, there are column pier, round-ended pier, conical column, y-column, hyperbola pier, vase pier, linear pier, v-pier, rectangular pier, some have "tie beam" which found in load-bearing of twin piers and y-piers, it is the most important and crucial component in construction of highway bridge, railway bridge, sidewalks, flyovers, ramp bridge and platform bridge.
Basic construction
According to the structure the pier formworks can be divided into lever type formworks and trussed type fromworks
.
Technique content
Precast girder formwork has advantages of high-precision, simple structure, retractile, easy-demoulding and simple operation. It can be hoisted or dragged to casting site integrally, and demoulded integrally or piecemeal after concrete achieving the strength, then pull out the inner mould from the girder. It is handy installing and debugging, low labor intensity, and high efficient.
Design technique of precasting girder mould
The mould is integrated designed and stress analyzed in concordance with the girder structure, girder span and arrangement of the casting site.The demoulding mechanism is designed by simulating the trajectory of the inner mould.
The girder's integrally or piecemeal pulling out of mould after precasting is ensured by inner mould structure, connectors, inner mould support system, hydraulic system, demoulding mechanism, guideway system and the segmental design of inner mould.
The design of outer mould structure, way of locomotion, support system of outer mould, pathway of temper mill, disposal of oscillator, stair and rail.
Transport scheme should be considered when design the inner and outer mould segmentation. The applicability of the mould to different girder span .
The material selection: 12mm steel plate for bottom mould and end mould;8mm steel plate for lateral mould and inner mould.
