Underground locomotive escape door device

[0016] (Example 1)

[0017] As shown in Figure 1, the present invention includes a door body 1 and a door body retracting mechanism 2. The door body 1 is a foldable door body that is hinged in the middle, formed into a plate shape after opening, and formed inner and outer layers 12 and 11 after being folded. The bottom end of the door 11 is hinged to the car body 8; the door body 11 is provided with a connecting rod frame 4 on both sides of the inner side of the door. The width of the door inner layer 12 is narrower than the distance between the two connecting rod frames 4, and the connecting rod frame 4 The door body 11 and the connecting rods 5 of the connecting rod frame 4 are all hinged, and the two ends of the upper rod of the connecting rod frame 4 are respectively connected to the inner and outer layers 12, 11 of the door body by cables; The door body retracting mechanism 2 is a cable retracting mechanism, the outer end of the cable 21 is connected in two strands with the door body and outer layers 12, 11; the inner layer 12 of the door body 1 is provided with the door inner layer 12 At the same time, the door lock 3 is locked with the door outer layer 11 and the vehicle body 8; a reinforcing cable 6 is connected between the inner side edges of the door outer layer 11 and the vehicle body.

[0018] As shown in Figure 2, the cable retractable mechanism has the function of self-deceleration, including two brackets 29 fixed on the car body 8. A transmission shaft 22 is provided between the two brackets 29, and both ends of the transmission shaft 22 are provided with The cable disc 23 of the winding cable 21; the transmission shaft 22 is also connected with a handle shaking mechanism composed of a worm gear 24 and a gear pair 25; the speed reduction is to set a thread section on the transmission shaft 22, and the thread section is provided A nut 26 engaged with the threaded section is axially fixed with a support 27 on the transmission shaft 22, and a gas spring 28 is connected between the nut 26 and the support 27.

[0019] As shown in Figure 3, the door lock 3 includes a bottom plate 31 fixed on the inner layer of the door. Both ends of the bottom plate 31 are provided with a main lock head 32 and a secondary lock head 33. The lock tongue of the main lock head 32 corresponds to the car body 8. The lock hole 71 of the auxiliary lock head 33 is matched with the corresponding lock hole 72 on the outer layer of the door. The lock tongues of the main and auxiliary lock heads 32 and 33 are driven by the rotating member 34 through the connecting rod 35 to move and rotate. An operating handle 36 and a bump positioning piece 37 are fixedly connected to the piece 34, and a positioning block 38 matching the bump positioning piece 37 is provided at a corresponding position of the bottom plate 31.

[0020] When in use, first pull the operating handle 36 of the door lock 3, the operating handle 36 drives the lock tongues of the main and auxiliary locks 32, 33 through the rotating member 34 and the connecting rod 35 to move, unlocking the door 1, and then use manpower Pushing the door body 1, the door body 1 turns and opens outward due to its own gravity, and the door inner layer 12 also turns outward due to inertia; while the door body 1 is opened, the connecting rod 5 is pulled by the front end cable to make the connection The rod frame 4 stands upright on the outer layer 11 of the door to form a handrail; at the same time, the cable 21 drives the drive shaft 22 to rotate through the cable disc 23, so that the nut 26 on the threaded section of the drive shaft 22 moves axially and presses the pneumatic spring 28. When the door body 1 is opened to a predetermined position, the pneumatic spring 28 starts to restrict the nut 26 from moving axially, thereby restricting the rotation of the transmission shaft 22, and finally stops the door body 1 under the combined action of the reinforcing cable 6, and the door body 1 forms a A gentle ramp for people to pass through. When it is necessary to close the escape door, the drive shaft 22 can be driven to rotate by the handle shaking mechanism composed of the worm gear pair 24 and the gear pair 25. The cable discs fixed at both ends of the drive shaft 22 wrap the cable 21 to close the door body to a proper position. Then pull the door 1 back manually and lock it on the locomotive.