CN-224228720-U - Tunnel thermal insulation door curtain

CN224228720UCN 224228720 UCN224228720 UCN 224228720UCN-224228720-U

Abstract

The utility model belongs to the technical field of tunnel construction heat preservation, and aims to solve the problems that a tunnel portal is poor in heat preservation effect and vehicles are inconvenient to get in and out. The utility model provides a tunnel heat preservation door curtain, the door curtain track is laid along the length direction of door top frame and is connected with its lateral wall, the door curtain track hangs on the door frame of tunnel portal department, the door curtain gallows is the two segmentation structures that divide with door curtain track's center, including left door curtain gallows and right door curtain gallows with door curtain track sliding connection, be used for the heat preservation door curtain of hoist and mount left and right sides respectively, wherein left door curtain gallows department is connected with door curtain upper link, right door curtain gallows department is connected with door curtain lower link, drive mechanism can drive left door curtain gallows and right door curtain gallows and do back motion or equidirectional motion simultaneously, in order to drive the heat preservation door curtain of left and right sides and open and close. The device has good heat preservation effect, and the vehicle is convenient to get in and out, so that convenience conditions can be provided for tunnel construction in cold areas.

Inventors

SUN XIANGYIN
PEI XIAOZHONG
YAO NAN
WANG ZENGLONG
Hou Yufu

Assignees

中铁三局集团有限公司
中铁三局集团第六工程有限公司

Dates

Publication Date: 20260512
Application Date: 20250411

Claims (5)

1. A tunnel heat-insulating door curtain is characterized by comprising a door top frame (1), a door curtain rail (2), a door curtain hanging frame (3), a door curtain upper connecting rod (4), a door curtain lower connecting rod (5) and a transmission mechanism, wherein the door curtain rail (2) is paved along the length direction of the door top frame (1) and is connected with the side wall of the door top frame, the door curtain rail (2) is hung on a door frame at a tunnel portal, the door curtain hanging frame (3) is of a two-section split structure divided by the center of the door curtain rail, and comprises a left door curtain hanging frame and a right door curtain hanging frame which are connected with the door curtain rail (2) in a sliding manner and are respectively used for hanging heat-insulating door curtains on the left side and the right side, the door curtain upper connecting rod (4) is connected with the door curtain lower connecting rod (5) at the position of the right door curtain hanging frame, and the transmission mechanism can drive the left door curtain hanging frame and the right door curtain hanging frame to move in the opposite directions or in the same direction so as to drive the door curtains on the left side and right side to be opened and closed; The driving mechanism comprises a speed reducer (6.1), a driving chain (6.2), a driving chain wheel (6.3) and a driven chain wheel (6.4), wherein the speed reducer is fixed at one side of the upper end of the door top frame (1), the driving chain wheel (6.3) and the driven chain wheel (6.4) are respectively arranged at the left end and the right end of the door top frame (1) and are driven by the driving chain (6.2), an output shaft of the speed reducer is connected with the driving chain wheel (6.3), the upper end of a door curtain upper connecting rod (4) is connected with the upper chain of the driving chain (6.2), and the lower end of a door curtain lower connecting rod (5) is connected with the lower chain of the driving chain (6.2); The door curtain hanging frame comprises a rail wheel connecting frame (3.1) and a connecting rod connecting frame (3.2), wherein the upper end of the rail wheel connecting frame (3.1) stretches into a sliding rail of a door curtain rail (2) and is connected with a rail wheel (9) in the rail wheel connecting frame, the rail wheel connecting frame (3.1) is connected with the connecting rod connecting frame (3.2) through bolts, the connecting rod connecting frame (3.2) of the left door curtain hanging frame is connected with an upper door curtain connecting rod (4) through bolts, and the connecting rod connecting frame (3.2) of the right door curtain hanging frame is connected with a lower door curtain connecting rod (5) through bolts.
2. A tunnel thermal insulation door curtain as claimed in claim 1, wherein the door curtain upper connecting rod (4) is abutted with the door curtain lower connecting rod (5) when the thermal insulation door curtains on the left side and the right side are closed.
3. The tunnel heat-insulating door curtain disclosed by claim 1 is characterized in that the longitudinal section of a door top frame (1) is of an inverted U shape, a plurality of track connecting angle steels (7) are arranged at the upper end of the door top frame (1), sliding tracks are inwards arranged at the lower end of a door curtain track (2), flange connecting pieces connected with the door type frame are arranged at the left end and the right end of the door curtain track (2), a plurality of frame connecting angle steels (8) are arranged at the upper end of the door curtain track (2), and the track connecting angle steels (7) are fixedly connected with the corresponding frame connecting angle steels (8) through bolts.
4. The tunnel thermal insulation door curtain according to claim 1, wherein the speed reducer (6.1) is connected with the door top frame (1) through a speed reducer base, and the driven sprocket (6.4) is connected with the door top frame (1) through a driven connecting seat.
5. The tunnel thermal insulation door curtain as claimed in claim 1, wherein the door curtain rail (2) is of a two-section split structure connected through a flange plate and is arranged corresponding to the left door curtain hanging frame and the right door curtain hanging frame respectively.

Description

Tunnel thermal insulation door curtain Technical Field The utility model belongs to the technical field of tunnel construction heat preservation, and particularly relates to a tunnel heat preservation door curtain. Background The tunnel engineering project construction in the cold region usually faces the conditions of severe weather and lower air temperature, the performance of materials for tunnel construction is affected, the construction progress is reduced, the engineering quality is deteriorated, the construction temperature in a main tunnel of the tunnel is guaranteed to be proper, the prior art mainly adopts a method for installing a heat preservation door, but the installed heat preservation door is simple in structure, the tunnel entrance is sealed and insulated only through a color steel heat preservation wall, the heat preservation effect is poor, vehicles are inconvenient to get in and out, and the tunnel construction condition in the cold region is still severe. Disclosure of utility model The utility model provides a tunnel heat-insulating door curtain for solving at least one technical problem in the prior art. The heat-insulating door curtain for the tunnel comprises a door top frame, a door curtain rail, a door curtain hanging frame, a door curtain upper connecting rod, a door curtain lower connecting rod and a transmission mechanism, wherein the door curtain rail is paved along the length direction of the door top frame and is connected with the side wall of the door curtain rail, the door curtain rail is hung on the door frame at a tunnel portal, the door curtain hanging frame is of a two-section split structure divided by the center of the door curtain rail and comprises a left door curtain hanging frame and a right door curtain hanging frame which are connected with the door curtain rail in a sliding manner and are respectively used for hanging heat-insulating door curtains on the left side and the right side, the left door curtain hanging frame is connected with a door curtain upper connecting rod, the right door curtain hanging frame is connected with a door curtain lower connecting rod, and the transmission mechanism can drive the left door curtain hanging frame and the right door curtain hanging frame to move in the opposite directions or the same direction at the same time so as to drive the heat-insulating door curtains on the left side and the right side to be opened and closed. Preferably, the transmission mechanism comprises a speed reducer, a transmission chain, a driving sprocket and a driven sprocket, wherein the speed reducer is fixed on one side of the upper end of the door top frame, the driving sprocket and the driven sprocket are respectively arranged at the left end and the right end of the door top frame and are transmitted through the transmission chain, an output shaft of the speed reducer is connected with the driving sprocket, the upper end of a connecting rod on a door curtain is connected with the upper chain of the transmission chain, and the lower end of a connecting rod under the door curtain is connected with the lower chain of the transmission chain. Preferably, when the thermal insulation curtains on the left side and the right side are closed, the upper door curtain connecting rod and the lower door curtain connecting rod are abutted. The door curtain rail is characterized in that the upper end of the door curtain rail is provided with a plurality of frame connecting angle steels, the lower end of the door curtain rail is internally provided with a sliding rail, the left end and the right end of the door curtain rail are provided with flange connecting pieces connected with the door-shaped frame, the upper end of the door curtain rail is provided with a plurality of frame connecting angle steels, and the frame connecting angle steels are fixedly connected with the corresponding frame connecting angle steels through bolts. Preferably, the door curtain hanging frame comprises a rail wheel connecting frame and a connecting rod connecting frame, wherein the upper end of the rail wheel connecting frame stretches into a sliding rail of the door curtain rail and is connected with a rail wheel in the rail wheel connecting frame, the rail wheel connecting frame is connected with the connecting rod connecting frame through bolts, the connecting rod connecting frame of the left door curtain hanging frame is connected with an upper connecting rod of the door curtain through bolts, and the connecting rod connecting frame of the right door curtain hanging frame is connected with a lower connecting rod of the door curtain through bolts. Preferably, the speed reducer is connected with the door top frame through a speed reducer base, and the driven sprocket is connected with the door top frame through a driven connecting seat. Preferably, the door curtain rail is of a two-section split structure connected through a flange plate and is respectively arranged corresponding