CN-224214116-U - Escape ladder for tunnel

Abstract

The utility model provides a tunnel is with cat ladder that flees, includes balladeur train, segmentation ladder, supporting platform sets up on the tunnel wall, is located temporary holding platform's below, the balladeur train includes two slide rails, and two slide rails extend along the horizontal direction, and have the interval distance, and the inner, the outer end of each slide rail are all upwards crooked with temporary holding platform is fixed, all are provided with first location section, second location section on each slide rail, and the inner of the nearly slide rail of first location section, the outer end of the nearly slide rail of second location section, the segmentation ladder includes upper segment ladder, hypomere ladder, the top both sides of upper segment ladder are provided with the pulley respectively to rolling fit is on corresponding slide rail, hypomere ladder's bottom is provided with the gyro wheel to support on supporting platform, hypomere ladder passes through keyway sliding fit in the lower part of upper segment ladder, makes up and constitutes the cat ladder for the tunnel. The utility model has simple structure and convenient use, and is spare when idle, so that the space of the tunnel sidewalk is not occupied, and the normal pedestrian passing requirement of the tunnel is met.

Inventors

• QU HUIMING
• CAO SAIJUN
• HE QIAN
• HAN JUN
• WANG JINGYI
• Tan Jingtong
• AI XIN
• TAN ZHONGJIE
• ZHANG YONGKUI
• MA YUE
• HE LU
• YANG YI
• YANG ZHAOHAN
• XU LULU
• LU SHENG
• LI XUE

Assignees

• 重庆市设计院有限公司

Dates

Publication Date

20260508

Application Date

20250418

Claims (6)

1. 1. The escape ladder for the tunnel is characterized by comprising a sliding frame (1), a section ladder (2) and a supporting platform (3), wherein the supporting platform (3) is arranged on the wall of the tunnel and is positioned below the temporary holding platform, The sliding frame (1) comprises two sliding rails (4), the two sliding rails extend along the horizontal direction and have a spacing distance, the inner end and the outer end of each sliding rail (4) are both bent upwards and fixed with the temporary holding platform, a first positioning section (41) and a second positioning section (42) are both arranged on each sliding rail (4), the first positioning section (41) is close to the inner end of the sliding rail, the second positioning section (42) is close to the outer end of the sliding rail, The sectional ladder (2) comprises an upper section ladder (21) and a lower section ladder (22), pulleys (5) are respectively arranged on two sides of the top of the upper section ladder (21) and are in rolling fit on corresponding sliding rails (4), rollers (6) are arranged at the bottom of the lower section ladder (22) and are supported on a supporting platform (3), and the lower section ladder (22) is in sliding fit with the lower part of the upper section ladder (21) through key grooves and is combined to form the escape ladder for a tunnel.
2. 2. The escape ladder for tunnels according to claim 1, wherein the inner end section and the outer end section of each slide rail (4) are recessed downward to form a semicircular arc section, and a first positioning section (41) and a second positioning section (42) are respectively formed.
3. 3. The escape ladder for tunnel according to claim 2, wherein the circle of the first positioning section (41) and the second positioning section (42) is adapted to the circle of the pulley (5).
4. 4. The escape ladder for tunnel according to claim 1, wherein the lower step (22) is slidably fitted to the lower back surface of the upper step (21) through a key groove, and a buffer spring (7) is provided between the upper step (21) and the lower step (22).
5. 5. The escape ladder for tunnel according to claim 1, wherein the number of the rollers (6) is two, and the rollers are respectively arranged at two sides of the bottom of the lower ladder section (22).
6. 6. The escape ladder for tunnel according to claim 1, wherein the upper ladder (21) is provided with two handles (8) at the front of the lower part thereof, and the handles (8) are located at both sides of the upper ladder (21).

Description

Escape ladder for tunnel Technical Field The utility model relates to the field of municipal design, in particular to an escape ladder for a tunnel. Background Tunnels are engineering structures buried in an underground formation, a form of human use of underground space. The tunnel is usually positioned at a low point, a traffic lane is arranged in the middle of the tunnel, and road shoulders are arranged at two sides of the tunnel to serve as sidewalks. In heavy storm weather, emergency situations of tunnel ponding caused by untimely drainage easily occur. For this situation, a temporary holding platform is usually arranged above the sidewalk in the tunnel, so that trapped people wait for rescue. The temporary holding platform is provided with a fixed ladder stand, and the fixed ladder stand is directly arranged on a sidewalk to form partial shielding for the sidewalk, so that pedestrian traffic is not facilitated. Therefore, designing an escape ladder for the temporary accommodating platform arranged in the tunnel and avoiding shielding the sidewalk is a problem to be solved urgently by those skilled in the art. Disclosure of Invention The utility model aims at overcoming the defects of the prior art, and provides an escape ladder for a tunnel, which has the advantages of simple structure, convenience in use and no occupation of tunnel sidewalk space for standby in idle time, and meets the requirements of normal pedestrian traffic of the tunnel. The technical scheme is that the escape ladder for the tunnel comprises a sliding frame, a sectional ladder and a supporting platform, wherein the supporting platform is arranged on a tunnel wall and is positioned below a temporary holding platform, the sliding frame comprises two sliding rails, the two sliding rails extend along the horizontal direction and have a spacing distance, the inner end and the outer end of each sliding rail are bent upwards and are fixed with the temporary holding platform, a first positioning section and a second positioning section are arranged on each sliding rail, the first positioning section is close to the inner end of the sliding rail, the second positioning section is close to the outer end of the sliding rail, the sectional ladder comprises an upper section ladder and a lower section ladder, pulleys are respectively arranged on two sides of the top of the upper section ladder and are in rolling fit with the corresponding sliding rails, rollers are arranged at the bottom of the lower section ladder and are supported on the supporting platform, and the lower section ladder is in sliding fit with the lower part of the upper section ladder through key grooves. The inner end section and the outer end section of each sliding rail are downwards sunken to form semicircular arc sections, and a first positioning section and a second positioning section are respectively formed. The circles of the first positioning section and the second positioning section are adapted to the circles of the pulleys. The lower section ladder is in sliding fit with the back of the lower part of the upper section ladder through a key slot, and a buffer spring is arranged between the upper section ladder and the lower section ladder. The number of the rollers is two, and the rollers are respectively arranged at two sides of the bottom of the lower section ladder. The front of the lower part of the upper ladder is provided with two handles, and the handles are positioned on two sides of the upper ladder. The technical scheme has the following beneficial effects: 1. The escape ladder for the tunnel comprises a sliding frame, a section ladder and a supporting platform, wherein the sliding frame is used for hanging the section ladder and positioning the section ladder, the supporting platform is used for supporting the section ladder in idle time, and the section ladder is prevented from occupying the space of a tunnel sidewalk in standby state in idle time. The supporting platform is arranged on the tunnel wall and located below the temporary holding platform, and the supporting platform does not occupy the space of the tunnel sidewalk. The sliding frame comprises two sliding rails, the two sliding rails extend along the horizontal direction and have a spacing distance, the inner end and the outer end of each sliding rail are both bent upwards and are fixed with the temporary holding platform, namely, the two sliding rails are fixed below the temporary holding platform and extend along the width direction of the pavement. The sliding rails are provided with a first positioning section and a second positioning section, and the first positioning section is close to the inner end of the sliding rail and the second positioning section is close to the outer end of the sliding rail. The sectional ladder comprises an upper section ladder and a lower section ladder, wherein pulleys are respectively arranged on two sides of the top of the upper section ladder and are in