Automatic safety door connecting structure of metal mine vertical well mouth

Abstract

The utility model discloses an automatic safety door connecting structure for a vertical shaft mouth of a metal mine, which belongs to the technical field of mine safety doors and comprises a door frame assembly, a door frame assembly, a safety door assembly and a safety door assembly, and the door frame assembly is mounted on the ground on the front side of the vertical shaft mouth and is perpendicular to the ground; the safety door assembly is arranged on the inner side of the door frame assembly; the automatic safety door comprises a door frame assembly and a rotary driving mechanism, the safety door assembly is movably connected with the door frame assembly through the rotary driving mechanism, and the safety door assembly can be turned over, opened and closed on the door frame assembly through the rotary driving mechanism. According to the device, the rotary driving mechanism is adopted as a power source to modify the safety door instead of hydraulic control in the market, and a double-door and single-door up-down moving mode is adopted, so that the cost is effectively saved, and the modification time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of mine safety door technology, specifically to an automatic safety door connection structure for the shaft opening of a metal mine. Background Technology

[0002] According to the relevant provisions of Articles 6.4.4.19 and 6.4.4.20 of the "Safety Regulations for Metal and Non-metal Mines", the cage hoisting system for hoisting personnel shall comply with the following provisions: - The manual safety door shall be opened and closed by the signalman. The cage hoisting system for hoisting ore and waste rock shall comply with the following provisions: - Automatic safety doors shall be installed at the shaft entrance and each intermediate section of the shaft, and interlocked with the hoist.

[0003] Currently, many mines use side-opening single-door safety doors. However, most automatic safety doors on the market are hydraulically controlled and use double-door or single-door up-and-down movement methods. If they are to be converted to automatic, they need to be purchased again, which will cost a lot of money and time (hot work at the mine entrance requires the evacuation of personnel underground). Therefore, how to quickly and effectively modify safety doors in a cost-effective manner so that they can be automatically controlled and ensure worker safety is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic safety door connection structure for the shaft opening of a metal mine, in order to solve the problem mentioned in the background art that some existing mines use side-opening single-door safety doors, while the automatic safety doors on the market generally use hydraulic control and adopt double-door and single-door up-and-down movement methods. If they are to be changed to automatic, they need to be repurchased, which consumes a lot of money and time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic safety door connection structure for the shaft opening of a metal mine, comprising:

[0006] A door frame assembly, which is installed on the ground in front of the shaft opening and is perpendicular to the ground;

[0007] A safety door assembly, wherein the safety door assembly is disposed inside the door frame assembly;

[0008] A rotary drive mechanism is provided, in which the safety door assembly is movably connected to the door frame assembly, and the safety door assembly can be flipped open and closed on the door frame assembly via the rotary drive mechanism.

[0009] Preferably, the door frame assembly includes:

[0010] The first upright post is erected on the ground and is perpendicular to the ground.

[0011] The second upright is erected on the ground and is perpendicular to the ground. The second upright corresponds to the first upright and is parallel to it.

[0012] A crossbar is disposed at the upper end between the first upright and the second upright;

[0013] Mounting bracket assembly, the mounting bracket assembly being disposed on the first upright facing the second upright;

[0014] An electromagnet is mounted on the side wall of the second upright.

[0015] Preferably, the front side wall of the second upright has a connecting hole, which penetrates the rear side wall of the second upright;

[0016] The second upright has a first mounting block symmetrically arranged at the corner of the rear side wall;

[0017] A second mounting block is symmetrically provided at the corner of the front side wall of the second upright;

[0018] A first mounting plate is symmetrically provided at the corner of the rear side wall of the second upright, and the first mounting plate corresponds to the second mounting block.

[0019] Preferably, a sensor is embedded on the side of the crossbar facing the ground.

[0020] Preferably, the mounting bracket assembly includes:

[0021] A second mounting plate is disposed on the first upright facing the second upright;

[0022] The fixing buckles are symmetrically arranged on the side wall of the second mounting plate;

[0023] A protective cover is disposed at the end of the second mounting plate.

[0024] Preferably, the security door assembly includes:

[0025] Safety door;

[0026] A magnetic metal sheet is disposed on the side of the security door;

[0027] A pressure rod assembly is disposed on the side of the safety door, and the pressure rod assembly is on the same side as the magnetic metal sheet.

[0028] Preferably, the safety door is provided with a connecting shaft at its end, and the connecting shaft is connected to the rotary drive mechanism.

[0029] Preferably, the pressure bar assembly includes:

[0030] A third mounting block is disposed on the side of the security door;

[0031] A pressure bar is disposed on the side wall of the third mounting block.

[0032] Preferably, a locking mechanism for locking the security door assembly is installed on the side wall of the door frame assembly, the locking mechanism comprising:

[0033] A first connecting plate, wherein a first connecting rod is provided on the side wall of the first connecting plate;

[0034] A top plate, wherein the top plate is disposed at the end of the first connecting plate;

[0035] The first buckle plate is disposed on the end of the first connecting plate away from the top plate, and the first buckle plate is detachably connected to the safety door assembly.

[0036] Preferably, a pry plate assembly for prying open the security door assembly is installed on the side wall of the door frame assembly, the pry plate assembly comprising:

[0037] The second connecting plate has a second connecting rod at its end and a second buckle plate that is detachably connected to the safety door assembly on the side of the second connecting plate away from the second connecting rod.

[0038] A pull plate is provided on the second connecting rod on the side away from the second connecting plate.

[0039] Compared with the prior art, the beneficial effects of this utility model are:

[0040] The safety door assembly is automatically opened or closed by a rotary drive mechanism. This device uses a rotary drive mechanism as the power source to modify the safety door, instead of using the hydraulic control available on the market. It adopts a double-door and single-door up-and-down movement mode, which effectively saves costs and reduces modification time.

[0041] When a person or object stands between the first and second uprights, the person or object blocks the infrared signal emitted by the sensor. The sensor sends a signal to the controller, which then controls the motor to stop working until the person or object leaves the sensor's detection range, effectively ensuring work safety.

[0042] Driven by the motor, the safety door flips towards the second upright, and the magnetic metal sheet contacts the electromagnet to magnetically lock. The pressure rod, driven by the safety door, passes through the connecting hole and contacts the top plate, pushing the top plate to move. The first connecting plate flips under the limit of the first connecting rod and the pin, driving the first buckle plate to move towards the safety door and contact the pipe on the safety door. It buckles onto the outer circumferential wall of the pipe on the safety door to lock the safety door, and is fixed by the tension of the coil spring. It can still lock the safety door even if the electromagnet fails, effectively eliminating the safety hazard when the safety door cannot be locked.

[0043] When an emergency occurs behind the safety door and the safety door cannot be opened effectively, the telescopic device is activated. The telescopic end of the telescopic device retracts, causing the pull plate to move. The second connecting rod, restricted by the pin, can only rotate, thereby driving the second connecting plate to rotate. The second connecting plate then drives the second buckle plate to rotate, using the lever principle to pry open the safety door and forcibly open it. In an emergency, the safety door can be opened quickly to ensure the safety of workers. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of this utility model;

[0045] Figure 2 This is a schematic diagram of the door frame assembly structure of this utility model;

[0046] Figure 3 This is a schematic diagram of the second upright structure of this utility model;

[0047] Figure 4 This is a schematic diagram of the safety door assembly structure of this utility model;

[0048] Figure 5 This is a schematic diagram of the locking mechanism of this utility model;

[0049] Figure 6 This is a schematic diagram of the skid assembly structure of this utility model;

[0050] Figure 7 This is a schematic diagram of the crossbar structure of this utility model.

[0051] In the diagram: 100 Door frame assembly, 110 First upright, 120 Second upright, 120a Connecting hole, 120b First mounting block, 120c Second mounting block, 120d First mounting plate, 130 Crossbar, 130a Sensor, 140 Mounting base assembly, 140a Second mounting plate, 140b Fixing buckle, 140c Protective cover, 150 Electromagnet, 200 Safety door assembly, 210 Safety door, 210a Connecting shaft, 220 Magnetic metal sheet, 230 Pressure rod assembly, 230a Third mounting block, 230b Pressure rod, 300 Rotary drive mechanism, 310 Motor, 320 Coupling, 400 Locking mechanism, 410 First connecting plate, 410a First connecting rod, 420 Top plate, 430 First buckle plate, 500 Pry plate assembly, 510 Second connecting plate, 510a Second connecting rod, 510b Second buckle plate, 520 Pull plate. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] This utility model provides an automatic safety door connection structure for the shaft entrance of a metal mine. A rotary drive mechanism automatically opens and closes the safety door assembly. This device uses a rotary drive mechanism as the power source to modify the safety door, instead of using commercially available hydraulic control. It employs both double-door and single-door vertical movement methods, effectively saving costs and reducing modification time. Please refer to [link / reference]. Figure 1 It includes: door frame assembly 100, security door assembly 200, rotary drive mechanism 300, latch mechanism 400 and pry plate assembly 500;

[0054] Example 1: Please refer to Figure 1 The door frame assembly 100 is erected on the ground in front of the shaft opening and installed perpendicular to the ground. The door frame assembly 100 is fixed to the ground by concrete or expansion bolts.

[0055] The rotary drive mechanism 300 is installed on one side wall inside the door frame assembly 100. The rotary drive mechanism 300 can generate rotational power when energized.

[0056] One side of the safety door assembly 200 is connected to the power output end of the rotary drive mechanism 300. The other side of the safety door assembly 200 contacts the door frame assembly 100 when closed, thus sealing the door frame assembly 100. Under the drive of the rotary drive mechanism 300, the other side of the safety door assembly 200 can also move away from the door frame assembly 100, allowing passage between the inside and outside. Workers can enter the cage through the door frame assembly 100 and enter the shaft through the cage.

[0057] Infrared sensors and controllers are installed on the door frame assembly 100. When a worker arrives at the door frame assembly 100, the infrared sensor triggers and sends a signal to the controller. The controller then activates the rotary drive mechanism 300, which in turn drives the safety door assembly 200 to open. Workers then pass through the door frame assembly 100 into the cage. The cage is also equipped with infrared sensors and controllers. After the workers have entered or exited the cage, the infrared sensor triggers the controller to send a signal, which in turn activates the rotary drive mechanism 300. The rotary drive mechanism 300 then drives the safety door assembly 200 to close or open. This device uses a rotary drive mechanism as the power source to modify the safety door, instead of using the hydraulic control commonly available on the market. It adopts a double-door and single-door up-and-down movement method, which effectively saves costs and reduces modification time.

[0058] Example 2: Please refer to Figure 1-2 and Figure 4 The door frame assembly 100 includes a first upright 110, a second upright 120, a mounting base assembly 140, and an electromagnet 150;

[0059] The first upright 110 and the second upright 120 are both I-beams. One end is fixed to the ground by concrete or expansion bolts through contact with the ground, and the other end extends upward and is fixed to the roof by bolts. The first upright 110 and the second upright 120 are both set perpendicular to the ground and are set parallel to each other.

[0060] Mounting bracket assembly 140 is mounted on the first upright 110 on the side facing the second upright 120. Mounting bracket assembly 140 includes a second mounting plate 140a, a fixing buckle 140b and a protective cover 140c.

[0061] The second mounting plate 140a is welded to the first upright 110 and faces the second upright 120, with the bottom end of the second mounting plate 140a in contact with the ground;

[0062] There are two fixing buckles 140b, which are symmetrically installed on the front surface of the second mounting plate 140a, one above the other. The fixing buckles 140b are detachably connected to the second mounting plate 140a by bolts.

[0063] The protective cover 140c is detachably mounted on the top of the front surface of the second mounting plate 140a by bolts, and the protective cover 140c is located at the top of the uppermost fixing buckle 140b.

[0064] Electromagnet 150 is screwed onto the front surface of the second upright 120. Electromagnet 150 is electrically connected to the controller, and the power supply to electromagnet 150 is controlled by the controller.

[0065] The rotary drive mechanism 300 is detachably mounted on the side wall of the mounting base assembly 140. The rotary drive mechanism 300 includes a motor 310 and a coupling 320.

[0066] The motor 310 is detachably mounted on the front surface of the second mounting plate 140a by bolts and is protected by the protective cover 140c. The motor 310 is electrically connected to the controller, which controls the starting, stopping, forward and reverse rotation of the motor 310.

[0067] The coupling 320 is detachably mounted on the output shaft of the motor 310, and the coupling 320 is located between the motor 310 and the uppermost retaining buckle 140b;

[0068] The safety door assembly 200 is rotatably connected to the door frame assembly 100 via a rotary drive mechanism 300. The safety door assembly 200 includes a safety door 210 and a magnetic metal sheet 220.

[0069] Safety door 210 is made of multiple bent and welded tubes. A connecting shaft 210a is welded to the side of safety door 210. The connecting shaft 210a is installed on the front side wall of the second mounting plate 140a through a fixing buckle 140b. The connecting shaft 210a and the fixing buckle 140b are connected by a bearing. The connecting shaft 210a can rotate between the fixing buckle 140b and the second mounting plate 140a through the bearing. Safety door 210 can be flipped around the connecting shaft 210a as the axis.

[0070] One end of the connecting shaft 210a is connected to the output shaft of the motor 310 through the coupling 320. The output shaft of the motor 310 drives the connecting shaft 210a to rotate, and the connecting shaft 210a drives the safety door 210 to rotate around the connecting shaft 210a as the axis, so as to achieve the opening and closing function.

[0071] A magnetic metal sheet 220 is welded to the safety door 210 on the side away from the connecting shaft 210a. The magnetic metal sheet 220 corresponds to the electromagnet 150. When the safety door 210 is closed on the first upright 110 and the second upright 120 under the drive of the motor 310, it comes into contact with the electromagnet 150. The electromagnet 150 is energized and generates magnetism to attract the magnetic metal sheet 220, thereby locking the safety door 210 on the first upright 110 and the second upright 120.

[0072] When the safety door 210 needs to be opened, the electromagnet 150 is de-energized and loses its magnetism, releasing the magnetic attraction to the electromagnet 150. Driven by the motor 310, the side of the safety door 210 away from the connecting shaft 210a moves towards the side away from the second upright 120, opening the passage between the first upright 110 and the second upright 120. Personnel can then enter the cage through the first upright 110 and the second upright 120 and ride the cage into the shaft.

[0073] Example 3: Please refer to Figure 1-2 and Figure 7 The crossbar 130 is welded to the top between the first upright 110 and the second upright 120, thereby enhancing the structural strength between the first upright 110 and the second upright 120.

[0074] A sensor 130a is located on the ground-facing side of the crossbar 130. The sensor 130a is an infrared sensor and is connected to the controller. When a person or object stands between the first upright 110 and the second upright 120, the person or object blocks the infrared signal emitted by the sensor 130a. The sensor 130a sends a signal to the controller, which then controls the motor 310 to stop working until the person or object leaves the sensing range of the sensor 130a, effectively ensuring work safety.

[0075] Example 4: Please refer to Figure 1-2 and Figure 4-5 A connecting hole 120a is provided in the groove on the front surface of the second upright 120, and the connecting hole 120a penetrates the rear surface of the second upright 120.

[0076] The first mounting block 120b is symmetrically welded to the corner of the rear surface of the second upright 120 facing the first upright 110;

[0077] The safety door assembly 200 also includes a pressure rod assembly 230 welded to the safety door 210 on the side away from the connecting shaft 210a. The pressure rod assembly 230 is disposed at the lower end of the magnetic metal sheet 220. The pressure rod assembly 230 includes a third mounting block 230a and a pressure rod 230b.

[0078] The third mounting block 230a is welded to the safety door 210 on the side away from the connecting shaft 210a. The third mounting block 230a is located at the lower end of the magnetic metal sheet 220 and corresponds to the connecting hole 120a.

[0079] The pressure rod 230b is welded to the third mounting block 230a on the side facing the second upright 120. The pressure rod 230b corresponds to the connecting hole 120a. The inner diameter of the connecting hole 120a is larger than the outer diameter of the pressure rod 230b. Since the pressure rod 230b moves in an arc shape under the action of the safety door 210, the large inner diameter of the connecting hole 120a makes it easy for the pressure rod 230b to be inserted into the inside of the connecting hole 120a and pass through the connecting hole 120a.

[0080] The locking mechanism 400 is movably connected to the second upright 120. The locking mechanism 400 includes a first connecting plate 410, a top plate 420, and a first buckle plate 430.

[0081] The first connecting plate 410 has an integrally formed first connecting rod 410a on its side wall. The first connecting rod 410a is inserted between two first mounting blocks 120b and connected to the two first mounting blocks 120b by a pin. The first connecting plate 410 is installed on the rear side wall of the second upright 120 by the cooperation of the first connecting rod 410a and the first mounting blocks 120b.

[0082] The top plate 420 is integrally formed at the end of the first connecting plate 410, and the top plate 420 corresponds to the connecting hole 120a;

[0083] The first snap-on plate 430 is integrally formed on the side of the first connecting plate 410 away from the top plate 420;

[0084] A coil spring is installed between the first connecting rod 410a and the pin, and the first connecting plate 410 is driven to flip toward the top plate 420 on one side by the coil spring.

[0085] In practical use, the safety door 210 flips towards the second upright 120 under the drive of the motor 310. The magnetic metal sheet 220 contacts the electromagnet 150 and magnetically locks it. The pressure rod 230b, driven by the safety door 210, passes through the connecting hole 120a and contacts the top plate 420, pushing the top plate 420 to move. The first connecting plate 410 flips under the limit of the first connecting rod 410a and the pin, driving the first buckle plate 430 to move towards the safety door 210 and contact the pipe on the safety door 210. It buckles onto the outer circumferential wall of the pipe on the safety door 210 to lock the safety door 210. Under the tension of the coil spring, the safety door 210 is fixed. It can still lock the safety door 210 even if the electromagnet 150 fails, effectively eliminating the safety hazard when the safety door 210 cannot be locked.

[0086] Example 5: Please refer to Figure 1-3 and Figure 6 A second mounting block 120c is symmetrically welded at the corner of the front surface of the second upright 120 away from the first upright 110;

[0087] A first mounting plate 120d is symmetrically welded to the corner of the rear surface of the second upright 120 away from the first upright 110. A telescopic device is installed on the side wall of the first mounting plate 120d. The telescopic device can be a cylinder, a hydraulic cylinder or an electric push rod, preferably a hydraulic cylinder. The power source of the telescopic device is set independently so that it will not fail to start in an emergency.

[0088] A pry plate assembly 500 is movably mounted on the front surface of the second upright 120. The pry plate assembly 500 includes a second connecting plate 510 and a pull plate 520.

[0089] The end of the second connecting plate 510 is integrally formed with a second connecting rod 510a. The second connecting rod 510a is inserted between two second mounting blocks 120c and is movably connected to the second mounting blocks 120c by a pin. The second connecting plate 510 is movably mounted on the second upright 120 through the cooperation of the second connecting rod 510a and the second mounting block 120c.

[0090] A second buckle plate 510b is integrally formed on the side of the second connecting plate 510 away from the second connecting rod 510a. The second buckle plate 510b is inserted between the safety door 210 and the second upright 120. The second buckle plate 510b is set at the upper end of the electromagnet 150. When the safety door 210 is closed on the second upright 120, the second buckle plate 510b is locked on the safety door 210, further locking the safety door 210, thereby further ensuring safety. When the second buckle plate 510b is locked on the safety door 210, the second buckle plate 510b only occupies one-third or one-quarter of the outer circumference of the tube on the safety door 210. The second buckle plate 510b and the safety door 210 only have a small area of ​​contact, so it will not affect the opening of the safety door 210.

[0091] The pull plate 520 is integrally formed on the side of the second connecting rod 510a away from the second connecting plate 510. The pull plate 520 extends outward to correspond to the telescopic device. The telescopic end on the telescopic device extends outward to the pull plate 520 to be in a movable connection with the pull plate 520.

[0092] In practical use, when an emergency occurs behind safety door 210 and safety door 210 cannot be opened effectively, the telescopic device is activated. The telescopic end of the telescopic device retracts, causing the pull plate 520 to move. The second connecting rod 510a, restricted by the pin, can only perform a flipping motion, thereby driving the second connecting plate 510 to flip. The second connecting plate 510 drives the second buckle plate 510b to flip, using the lever principle to pry open safety door 210 and forcibly open it. In an emergency, safety door 210 can be opened quickly to ensure the safety of workers.

[0093] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A connection structure for an automatic safety door at the entrance of a metal mine shaft, characterized in that: include: A door frame assembly (100) is installed on the ground in front of the shaft opening and is perpendicular to the ground. A safety door assembly (200) is disposed inside the door frame assembly (100); A rotary drive mechanism (300) is provided, wherein the safety door assembly (200) is movably connected to the door frame assembly (100) via the rotary drive mechanism (300), and the safety door assembly (200) is able to flip open and close on the door frame assembly (100) via the rotary drive mechanism (300).

2. The automatic safety door connecting structure of a metal mine shaft portal according to claim 1, characterized in that: The door frame assembly (100) includes: The first upright (110) is erected on the ground and is set perpendicular to the ground; The second upright (120) is erected on the ground and is perpendicular to the ground. The second upright (120) corresponds to the first upright (110) and is parallel to each other. A crossbar (130) is disposed at the upper end between the first upright (110) and the second upright (120); Mounting base assembly (140) is disposed on the first upright (110) facing the second upright (120); An electromagnet (150) is disposed on the side wall of the second upright (120).

3. The automatic safety door connecting structure of a metal mine shaft portal according to claim 2, characterized in that: The front side wall of the second upright (120) is provided with a connecting hole (120a), and the connecting hole (120a) penetrates the rear side wall of the second upright (120); A first mounting block (120b) is symmetrically provided at the corner of the rear side wall of the second upright (120). A second mounting block (120c) is symmetrically provided at the corner of the front side wall of the second upright (120); A first mounting plate (120d) is symmetrically provided at the corner of the rear side wall of the second upright (120), and the first mounting plate (120d) corresponds to the second mounting block (120c).

4. The automatic safety door connecting structure of a metal mine shaft portal according to claim 2, characterized in that: A sensor (130a) is embedded on the side of the crossbar (130) facing the ground.

5. The automatic safety door connecting structure of a metal mine shaft portal according to claim 2, characterized in that: The mounting bracket assembly (140) includes: The second mounting plate (140a) is disposed on the first upright (110) facing the second upright (120); A fixing buckle (140b) is symmetrically arranged on the side wall of the second mounting plate (140a); A protective cover (140c) is disposed at the end of the second mounting plate (140a).

6. The automatic safety door connecting structure of a metal mine shaft portal according to claim 1, characterized in that: The security door assembly (200) includes: Safety door (210); A magnetic metal sheet (220) is disposed on the side of the security door (210); A pressure bar assembly (230) is disposed on the side of the safety door (210), and the pressure bar assembly (230) is on the same side as the magnetic metal sheet (220).

7. The automatic safety door connecting structure of a metal mine shaft portal according to claim 6, characterized in that: The safety door (210) is provided with a connecting shaft (210a) at its end, and the connecting shaft (210a) is connected to the rotary drive mechanism (300).

8. The automatic safety door connecting structure of a metal mine shaft portal according to claim 6, characterized in that: The pressing rod assembly (230) comprises: A third mounting block (230a) arranged on the side of the safety door (210); A pressing rod (230b) arranged on the side wall of the third mounting block (230a).

9. The automatic safety door connecting structure of a metal mine shaft portal according to claim 1, characterized in that: A lock catch mechanism (400) for locking the safety door assembly (200) is arranged on the side wall of the door frame assembly (100), and the lock catch mechanism (400) comprises: A first connecting plate (410) with a first connecting rod (410a) arranged on the side wall thereof; A top plate (420) arranged at the end of the first connecting plate (410); A first buckle plate (430) arranged on the first connecting plate (410) away from the top plate (420), and the first buckle plate (430) is detachably connected with the safety door assembly (200).

10. The automatic safety door connecting structure of a metal mine shaft portal according to claim 1, characterized in that: A pry plate assembly (500) for prying open the safety door assembly (200) is arranged on the side wall of the door frame assembly (100), and the pry plate assembly (500) comprises: A second connecting plate (510) with a second connecting rod (510a) arranged at the end thereof, and a second buckle plate (510b) arranged on the second connecting plate (510) away from the second connecting rod (510a) and detachably connected with the safety door assembly (200); A pull plate (520) arranged on the second connecting rod (510a) away from the second connecting plate (510).

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