Threshold-free steel structure explosion-proof protective door for railway tunnel

Abstract

The utility model relates to the technical field of protective doors, in particular to a railway tunnel doorsill-free steel structure anti-explosion protective door which comprises a foundation body, the upper side of the foundation body is fixedly connected with a wall body, a positioning groove is formed in the wall body, the interior of the positioning groove is slidably connected with a protective door body, and the middle position of the lower side of the wall body is fixedly connected with a communicating door opening. A lifting mechanism is arranged above the wall body, the lifting mechanism comprises a second equipment chamber, a connecting through hole, a winch, a connecting shaft, a servo motor, a lifting steel cable and an electromagnet, and the second equipment chamber is formed in the upper side position of the wall body; the lifting mechanism is matched with the electromagnet to fix the protective door body, when a dangerous case occurs, the electromagnet is directly powered off, at the moment, the protective door body can rapidly fall in a free falling body shape, the communicating door opening is blocked, the closing speed of the protective door is increased, the dangerous case can be rapidly blocked, and the emergency processing capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective doors, in particular to a threshold-free steel structure explosion-proof protective door for a railway tunnel. Background Art

[0002] Tunnel protection doors are used to separate the evacuation passage and the train track area of ​​the tunnel. They are mainly used in railway tunnels, such as cross passages, repeater stations, substations and other caverns.

[0003] Among them, announcement number CN218934494U discloses a glass fiber reinforced plastic tunnel protective door, comprising a main frame, a first door body is movably connected to the right side of the main frame inner cavity, and a second door body is movably connected to the left side of the main frame inner cavity; the utility model effectively isolates the external temperature through the cooperation of perlite fireproof board and fireproof and explosion-proof board, improves the explosion and fireproof points of the first door body and the second door body, effectively alleviates the situation that the first door body and the second door body are damaged by flame erosion, and improves the stability, hardness and impact resistance of the first door body and the second door body through the first glass fiber reinforced plastic plate and the second glass fiber reinforced plastic plate, effectively alleviates the situation that the first door body and the second door body are damaged or fall off by impact, ensures the safe operation of the tunnel, and solves the problem that the door body is easily damaged by impact force or flame erosion due to the general explosion-proof performance and short fire resistance limit time of the protective door, thereby affecting the service life of the door body and the emergency escape efficiency of personnel.

[0004] During the use of this device, due to the long length of the tunnel, when a dangerous situation occurs, the door cannot be closed immediately, the emergency handling capability is low, and the staff are required to manually close and lock the two sets of doors. When a dangerous situation occurs, it is very dangerous and has poor practicality.

[0005] Therefore, it is necessary to invent a railway tunnel threshold-free steel structure explosion-proof protective door to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a railway tunnel threshold-free steel structure explosion-proof protective door to solve the technical problems that when a dangerous situation occurs, the door body cannot be closed immediately, the emergency handling capability is low, and the workers are in high danger when a dangerous situation occurs.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a threshold-free steel structure explosion-proof protective door for a railway tunnel, comprising a base body, the upper side of the base body is fixedly connected to a wall body, a positioning groove is provided inside the wall body, a protective door body is slidably connected inside the positioning groove, a connecting door hole is fixedly connected to the middle position of the lower side of the wall body, a lifting mechanism is arranged above the wall, the lifting mechanism comprises a second equipment room, a connecting through hole, a winch, a connecting shaft, a servo motor, a lifting steel cable and an electromagnet, and the second equipment room is opened at the upper side of the wall body.

[0008] By adopting the above technical solution, the electromagnet is magnetically fixed to the upper end of the protective door body after being energized, and the servo motor drives the winch to reel in the lifting cable, thereby driving the protective door body to rise. When a dangerous situation occurs, the electromagnet can be powered off, and the protective door will quickly descend under the action of gravity to seal the connecting door opening.

[0009] Optionally, limiting grooves are provided on both the left and right sides of the positioning groove, and limiting blocks are fixedly connected to both the left and right ends of the protective door body, and the limiting blocks are slidably connected to the limiting grooves.

[0010] By adopting the above technical solution, the limiting block slides up and down inside the limiting groove, thereby improving the stability of the protective door body.

[0011] Optionally, a plug-in slot is provided on the upper surface of the ground base body at a position below the positioning slot, and a first equipment room is provided inside the ground base body at positions at left and right ends of the plug-in slot.

[0012] By adopting the above technical solution, when the protective door body is lowered, its lower end is inserted into the inside of the plug-in groove to ensure the sealing of the lower end of the protective door body.

[0013] Optionally, the first equipment room is located at the lower side of the limiting groove, and a hydraulic buffer is fixedly installed inside the first equipment room.

[0014] By adopting the above technical solution, when the protective door body contacts the ground, the lower ends of the limit blocks on both sides will abut against the telescopic rods in the hydraulic buffer. At this time, the hydraulic buffer will buffer the protective door body, reduce the impact force generated by the landing of the protective door, and improve the safety of the protective door.

[0015] Optionally, two groups of connecting through holes are provided, and the two groups of connecting through holes are arranged side by side on the inner bottom wall of the second equipment room.

[0016] By adopting the above technical solution, the lower ends of the lifting cables pass through two groups of connecting through holes.

[0017] Optionally, a mounting frame is fixedly connected to the side surfaces of the two groups of connecting through holes, the capstan is rotatably connected to the inner side of the mounting frame, and both ends of the connecting shaft are respectively fixedly connected to the two groups of capstans.

[0018] By adopting the above technical solution, the winch rotates inside the mounting frame.

[0019] Optionally, the servo motor is fixedly installed at the right side of the second equipment room, the output end of the servo motor is fixedly connected to the right winch, and the lifting cable is wound around the surface of the winch.

[0020] By adopting the above technical solution, the servo motor drives the winch on the right to rotate, and the two sets of winches rotate synchronously through the connecting shaft to reel in the lifting cable.

[0021] Optionally, the lower end of the lifting cable is fixedly connected to a connecting block, the lower end of the connecting block is fixedly connected to the upper surface of the electromagnet, the lower surface of the electromagnet is magnetically fixed to the upper end of the protective door body, and a controller is installed at the left end of the second equipment room, and the controller is electrically connected to the electromagnet.

[0022] By adopting the above technical solution, the controller is used to control the opening and closing of the electromagnet. When encountering a dangerous situation, the controller will cut off the power to the electromagnet. At this time, the protective door will slide down quickly in a free fall state to block the connecting door opening.

[0023] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0024] 1. The utility model fixes the protective door body by means of a lifting mechanism in cooperation with an electromagnet. When a dangerous situation occurs, the electromagnet is directly powered off, and the protective door body falls rapidly in a free fall state, blocking the connecting door opening, avoiding close manual operation, improving the safety of use, and closing the protective door in time. At the same time, the closing speed of the protective door is increased, so as to quickly block the dangerous situation and improve the emergency handling capability, thus solving the problems that the door body cannot be closed immediately when a dangerous situation occurs, the emergency handling capability is low, and the staff are in high danger when a dangerous situation occurs;

[0025] 2. The utility model arranges hydraulic buffers on both sides of the foundation body. The hydraulic buffers cushion the descending protective door body, reduce the landing speed of the protective door body, effectively reduce the impact force generated when the protective door falls to the ground, and ensure the safety of the protective door and the foundation body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the lifting mechanism structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the protective door structure of the utility model;

[0030] Figure 5 It is a schematic diagram of the foundation structure of the utility model.

[0031] Description of reference numerals:

[0032] 1. Foundation body; 11. Plug-in slot; 12. First equipment room; 13. Hydraulic buffer; 2. Wall; 21. Connecting door opening; 22. Positioning slot; 23. Limiting slot; 3. Second equipment room; 31. Connecting through hole; 32. Mounting frame; 33. Winch; 34. Connecting shaft; 35. Servo motor; 36. Lifting cable; 37. Connecting block; 38. Electromagnet; 39. Controller; 4. Protective door body; 41. Limiting block. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] The utility model provides Figure 1 and Figure 2 A threshold-free steel explosion-proof protective door for a railway tunnel shown in the figure comprises a base body 1, the upper side of the base body 1 is fixedly connected to a wall body 2, a positioning groove 22 is provided inside the wall body 2, a protective door body 4 is slidably connected inside the positioning groove 22, a connecting door opening 21 is fixedly connected to the middle position of the lower side of the wall body 2, a lifting mechanism is arranged above the wall body 2, the lifting mechanism comprises a second equipment room 3, a connecting through hole 31, a winch 33, a connecting shaft 34, a servo motor 35, a lifting steel cable 36 and an electromagnet 38, the second equipment room 3 is provided at the upper side of the wall body 2, limiting grooves 23 are provided on the left and right sides of the positioning groove 22, the left and right ends of the protective door body 4 are fixedly connected to limiting blocks 41, and the limiting blocks 41 are slidably connected to the limiting grooves 23.

[0035] Among them, the protective door body 4 is fixed by the lifting mechanism in cooperation with the electromagnet 38. When a dangerous situation occurs, the electromagnet 38 is directly powered off. At this time, the protective door body 4 will fall rapidly in a free fall state to block the connecting door opening 21, avoid close manual operation, improve safety of use and close the protective door in time, and at the same time increase the closing speed of the protective door, so as to quickly block the dangerous situation and improve the emergency handling capability.

[0036] See also Figure 3 and Figure 4 There are two groups of connecting through holes 31, and the two groups of connecting through holes 31 are arranged side by side on the inner bottom wall of the second equipment room 3. The sides of the two groups of connecting through holes 31 are fixedly connected with mounting frames 32, and the capstan 33 is rotatably connected to the inner side of the mounting frames 32. The two ends of the connecting shaft 34 are fixedly connected to the two groups of capstans 33 respectively. The servo motor 35 is fixedly installed on the right side of the second equipment room 3, and the output end of the servo motor 35 is fixedly connected to the right capstan 33. The lifting cable 36 is wound around the surface of the capstan 33, and the lower end of the lifting cable 36 is fixedly connected with a connecting block 37. The lower end of the connecting block 37 is fixedly connected to the upper surface of the electromagnet 38, and the lower surface of the electromagnet 38 is magnetically fixed to the upper end of the protective door body 4. A controller 39 is installed at the left end of the second equipment room 3, and the controller 39 is electrically connected to the electromagnet 38.

[0037] Specifically, when the protective door body 4 needs to be reopened, the output end of the servo motor 35 drives the two sets of winches 33 to rotate, and the winch 33 will lift the steel cable 36. At this time, the electromagnet 38 will slide downward until the lower end of the electromagnet 38 is tightly against the upper end of the protective door body 4. At this time, the electromagnet 38 is energized to generate a strong magnet to fix the protective door body 4. Then the servo motor 35 drives the winch 33 to reel in the lifting steel cable 36, thereby pulling the protective door body 4 upward to open the connecting door opening 21.

[0038] See also Figure 5 A plug-in groove 11 is provided on the upper surface of the ground basic body 1 at a position below the positioning groove 22, and a first equipment room 12 is provided inside the ground basic body 1 at positions on both sides of the plug-in groove 11. The first equipment room 12 is located at a lower side of the limiting groove 23, and a hydraulic buffer 13 is fixedly installed inside the first equipment room 12.

[0039] In addition, when the protective door body 4 falls, when it is close to the ground, the lower ends of the limit blocks 41 at both ends first abut against the telescopic rods in the hydraulic buffer 13, and the hydraulic buffer 13 is used to buffer the protective door body 4, slowing down its descending speed, reducing the impact force generated by its landing, and improving the safety of the protective door body 4.

[0040] Working principle of the utility model: in order to improve the closing speed of the protective door body 4 and increase the emergency handling capability, the protective door body 4 is fixed by cooperating with the electromagnet 38 through the lifting mechanism. When a dangerous situation occurs, the electromagnet 38 is directly powered off. At this time, the protective door body 4 will fall rapidly in a free fall state to block the connecting door opening 21 and at the same time improve the closing speed of the protective door so as to quickly block the dangerous situation and improve the emergency handling capability.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A railway tunnel threshold-free steel structure explosion-proof protective door, comprising a foundation body (1), characterized in that: The upper side of the foundation body (1) is fixedly connected to a wall body (2), a positioning groove (22) is provided inside the wall body (2), a protective door body (4) is slidably connected inside the positioning groove (22), a connecting door hole (21) is fixedly connected to the middle position of the lower side of the wall body (2), and a lifting mechanism is arranged above the wall body (2), the lifting mechanism comprises a second equipment room (3), a connecting through hole (31), a winch (33), a connecting shaft (34), a servo motor (35), a lifting steel cable (36) and an electromagnet (38), and the second equipment room (3) is provided at the upper side of the wall body (2).

2. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 1, characterized in that: Limiting grooves (23) are provided on both left and right sides of the positioning groove (22), and both left and right ends of the protective door body (4) are fixedly connected to limiting blocks (41), and the limiting blocks (41) are slidably connected to the limiting grooves (23).

3. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 2 is characterized by: The upper surface of the ground base body (1) is provided with a plugging slot (11) at a position below the positioning slot (22), and the interior of the ground base body (1) is provided with a first equipment chamber (12) at positions at both left and right ends of the plugging slot (11).

4. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 3 is characterized by: The first equipment chamber (12) is located at a lower side of the limiting groove (23), and a hydraulic buffer (13) is fixedly installed inside the first equipment chamber (12).

5. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 1 is characterized by: Two groups of the connecting through holes (31) are provided, and the two groups of the connecting through holes (31) are arranged side by side on the inner bottom wall of the second equipment room (3).

6. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 5, characterized in that: A mounting frame (32) is fixedly connected to the side surfaces of the two groups of connecting through holes (31), the capstan (33) is rotatably connected to the inner side of the mounting frame (32), and both ends of the connecting shaft (34) are respectively fixedly connected to the two groups of capstans (33).

7. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 1, characterized in that: The servo motor (35) is fixedly installed at the right side of the second equipment room (3), the output end of the servo motor (35) is fixedly connected to the right winch (33), and the lifting steel cable (36) is wound around the surface of the winch (33).

8. The railway tunnel threshold-free steel structure explosion-proof protective door according to claim 7, characterized in that: The lower end of the lifting steel cable (36) is fixedly connected to a connecting block (37), the lower end of the connecting block (37) is fixedly connected to the upper surface of the electromagnet (38), the lower surface of the electromagnet (38) is magnetically fixed to the upper end of the protective door body (4), and a controller (39) is installed at the left end of the second equipment room (3), and the controller (39) is electrically connected to the electromagnet (38).

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