Movable car roof ladder applied to heavy public service rail car

Abstract

The invention discloses a movable car roof ladder applied to a heavy public service rail car. The movable car roof ladder comprises a pedal (3) and a car roof ladder body (4). The pedal (3) is installed on the dividing wall (1) through a hinge (5), the pedal (3) is perpendicular to the dividing wall (1) when in a use state, and the pedal (3) is parallel to the dividing wall (1) when in a non-use state; the end part of the pedal (3) is connected with the upper end of the roof ladder (4) through a hinge (6), the lower end of the roof ladder (4) is supported on the floor (2) at an angle when the roof ladder (4) is in a use state, and the roof ladder (4) is parallel to the dividing wall (1) when the roof ladder (4) is in a non-use state. According to the movable roof ladder designed by the invention, the lower end is quickly pulled open when a user climbs a roof, so that the user can climb the roof conveniently and effortlessly. When not in use, the lower end quickly moves towards the wall, is close to the wall and is hung on the wall, opening and closing of a door of the electric appliance cabinet are not affected, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of rail cars for public works, in particular to a movable roof ladder used by crew members to climb on the top of the rail car from inside the car body. Background technique [0002] The heavy-duty public rail car is mainly used for the transportation of construction materials and personnel during railway construction and line maintenance. It is very suitable for traction of maintenance trains, with a maximum operating speed of 120km / h. At the same time, it has power frequency power generation function and supporting power supply facilities, which can provide 150KVA, AC400V, 50Hz three-phase AC power supply for railway construction and connected vehicles. With the rapid development of railway tracks and the continuous improvement of speed, various railway bureaus have continuously increased their technical requirements for railway cars. Various equipment such as transportation monitoring, communications (ant...

AI Technical Summary

Problems solved by technology

The disadvantages are as follows: 1) When the railcar adds resistance braking, the distance between the resistance braking cabinet and the electrical cabinet is 450mm

The width of the ladder is 320, and the distance between the sides and the electrical cabinet is too small, which affects the opening of the electrical cabinet door, inspection and maintenance

2) Change the distance from 150mm to the wall to 90mm. The distance between the step and the wall is too small. When stepping on the ladder, you can only step on the step with the front of your foot, which does not meet the safety regulations.

[0004] The second prior art is a roof ladder with a shrinkable structure, which has the following disadvantages: 1) The structural width of the ladder is large, and the space between the electrical cabinet and the brake cabinet in the car body is not enough; 2) The height after shrinking is too high, and the car The assembly height in the body is not enough; 3) In addition, the shrunken box body is large and the width is too wide. After the ladder is opened, it is lower than the height of the electrical cabinet, and the space between the electrical cabinet and the brake cabinet in the car body is not enough

Images