Truss bridge inspection vehicles decreased work platform

One kind of truss bridge inspection vehicles decreased work platform system, belonging to decrease the work platform system engineering machinery. The descending device comprising: a decline in the steel bracket means connected to the lower end of the boom bridge inspection vehicle, connected to a guide pulley at the front end of the upper end of the steel bracket; backend connector thread three electric winches, electric winches in three thread connecting the steel bracket under the electric control box, there is a guide pulley below the basket, the basket has an upper end hook, and the anti-swing rope thread the cable connected to the three electric winch by the guide pulley side of the basket running pulley is connected to the wall. Advantages: The present invention is able to worker safety, smoothly conveyed below the working platform, up to 60 meters in the vertical position, the two sets of primary and secondary wire rope safety mechanism to ensure the basket, the basket by an electric or manual control electric winch achieve lift for large bridge piers for testing, maintenance, stable, safe and reliable.