Integrated rail surface linkage three-point locking device with safety self-resetting function

Abstract

The invention discloses an integrated rail surface linkage three-point locking device with a safety self-resetting function, which is characterized in that a main lock assembly, a rail surface lock assembly, an upper auxiliary lock assembly and a lower auxiliary lock assembly are mounted in a door leaf sealing surface of a rail transit train, and the main lock assembly is in transmission linkage with the upper auxiliary lock assembly and the lower auxiliary lock assembly through an upper pull rod and a lower pull rod; the middle stopper and the auxiliary stopper are installed on a door frame on the inner side of a train body of the rail transit train. Locking and unlocking of the door lock are achieved by controlling three lock tongues of the main lock assembly, the outer lock assembly and the rail surface outer lock assembly to stretch out to be in lap joint with the lock stop and retract to be separated from the lock stop. The safety self-resetting and three-point locking linkage functions can be achieved when the door lock is operated on the rail surface, the safety self-resetting and three-point locking linkage functions are achieved, the safety self-resetting and three-point locking linkage device is matched with the complex outer curved surface of a vehicle body, and the requirements for the smooth outer surface and the comfortable operation space are met.

Description

Technical Field

[0001] The invention relates to the field of hinged door locks for rail transit trains, and in particular to a three-point locking device for rail transit trains with integrated track surface linkage and a safety self-resetting function. Background Art

[0002] At present, the driver's door of high-speed intercity trains generally adopts a manual hinged door structure, and the door is locked by a door lock. The door lock is usually a three-point locking structure, including a main lock component, an outer lock component, an upper secondary lock and a lower secondary lock. The reset function of the safety device is divided into self-reset and manual reset. When there is a need for track surface operation function, a track surface operation device needs to be added on the outside. The existing door lock with track surface operation function can only meet the manual reset function of the insurance, and cannot meet the three-point locking requirements of the track surface linkage including the self-reset of the insurance.

[0003] Therefore, it is necessary to develop a new type of three-point locking device for rail trains to meet the needs of three-point locking with rail surface linkage and self-reset. Summary of the invention

[0004] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a three-point locking device for railway trains with integrated track surface linkage and safety self-reset function, so that the door lock operated on the track surface can also have the functions of safety self-reset and three-point locking linkage, and is adapted to the complex outer curved surface of the car body to meet the requirements of flat outer surface and comfortable operating space.

[0005] Technical solution: The present invention is an integrated track surface linkage three-point locking device with a safety self-reset function, characterized in that it includes a main lock assembly, an upper secondary lock assembly, a lower secondary lock assembly, an outer lock assembly, a track surface outer lock assembly, a track surface lock assembly, an upper pull rod, a lower pull rod, a main lock rod assembly, a safety lock rod assembly, an auxiliary lock block and a middle lock block; the main lock assembly, the track surface lock assembly, the upper secondary lock assembly and the lower secondary lock assembly are installed in the sealing surface of the door leaf of the rail transit train, and the main lock assembly and the upper secondary lock assembly and the lower secondary lock assembly are linked by the upper pull rod and the lower pull rod, and the middle lock block and the auxiliary lock block are installed on the inner door frame of the car body of the rail transit train; the door lock is locked and unlocked by controlling the lock tongues of the main lock assembly, the outer lock assembly and the track surface outer lock assembly to extend and overlap with the lock block, and retract and separate from the lock block.

[0006] Among them, the main lock assembly, upper secondary lock assembly, lower secondary lock assembly, outer lock assembly, track surface outer lock assembly, and track surface lock assembly are connected into an integrated structure through an upper pull rod, a lower pull rod, a main lock pull rod assembly, and a safety lock pull rod assembly; the main lock assembly and the outer lock assembly are respectively located on the inner and outer sides of the middle part of the door leaf of the rail transit train; the upper secondary lock assembly and the lower secondary lock assembly are respectively located on the upper and lower parts of the inner side of the door leaf of the rail transit train; the track surface outer lock assembly and the track surface lock assembly are respectively located on the inner and outer sides of the lower part of the door leaf of the rail transit train; the middle lock block is located in the middle of the inner door frame of the car body of the rail transit train, and the secondary lock block is located at the upper and lower parts of the inner door frame of the car body.

[0007] Among them, the main lock assembly includes a safety lock and a main lock. The main lock is provided with a main lock tongue and a main lock shaft. The safety lock is provided with a safety lock shaft. The main lock realizes the extension and retraction of the main lock tongue through a dial and a compression spring structure. The safety lock limits the action authority of the main lock through a dial plate, a limit block and a torsion spring structure, and automatically resets the safety lock after the main lock is unlocked.

[0008] Among them, the upper auxiliary lock assembly has the same structure as the lower auxiliary lock assembly. The upper auxiliary lock assembly is provided with a pull rod compression spring, a pull plate, an auxiliary lock box and an auxiliary lock tongue. The upper auxiliary lock assembly realizes the extension and retraction of the auxiliary lock tongue through a dial and a compression spring structure.

[0009] Among them, the external lock assembly has the same structure as the rail surface external lock assembly, the external lock assembly is provided with a lock core assembly, an external lock box and a sliding assembly, and the rail surface external lock assembly is provided with a rail surface external lock box, a rail surface sliding assembly, and a rail surface lock core assembly; the sliding assembly and the rail surface sliding assembly are provided with protective plates for protection and increasing the operating space.

[0010] Among them, the rail surface lock assembly is provided with a mounting plate, a rail surface main shaft and a rail surface safety shaft; the main lock rod assembly is provided with a rail surface main shift block, a rail surface main lock rod, a main lock adjustment block, a main lock rod and a main shift block; the safety lock rod assembly is provided with a rail surface safety shift block, a rail surface safety rod, a safety adjustment block, a safety rod and a safety shift block; the linkage of the external lock assembly, the rail surface external lock assembly and the main lock assembly is realized through the main lock shaft, the safety lock shaft, the rail surface main shaft, the rail surface safety shaft, the main lock rod assembly and the safety lock rod assembly, and the linkage adjustment is realized by adjusting the main lock adjustment block and the safety adjustment block.

[0011] Among them, when the safety of any one of the main lock assembly, outer lock assembly and track surface outer lock assembly is not released, the operating handle or the outer sliding assembly cannot unlock the door lock; after the safety of any one of the main lock assembly, outer lock assembly and track surface outer lock assembly in the door lock is released, the operating handle or the outer sliding assembly can retract the three lock tongues to achieve unlocking; while the lock tongue retracts, the safety lock begins to reset itself to the safety state, and the handle or the outer sliding assembly is released until the main lock tongue is fully extended, and the safety lock also completes the self-resetting action to the safety state, that is, without re-unlocking the safety, any handle or outer sliding assembly cannot be operated.

[0012] When opening the door from the inside: operate the safety lock to rotate a certain angle to unlock the safety, then operate the main lock to rotate a certain angle, the main lock tongue begins to retract and disengage from the middle lock gear, and at the same time, the safety lock starts to automatically reset to lock under the drive of the main lock tongue. After the safety lock is actuated, the upper secondary lock assembly and the lower secondary lock assembly respectively drive the upper pull rod and the lower pull rod to make the secondary lock tongue begin to retract and disengage from the secondary lock gear, realizing three-point unlocking. After the removal operation, the main lock and the safety lock reset automatically;

[0013] When closing the door from the inside: the door leaf is pushed from the inside until the three-point lock tongue hits the lock block, retracts and then extends again, cooperating with the three-point lock block. During the process, the safety lock does not move and remains locked, thus achieving three-point locking and closing of the door.

[0014] When the door is opened from the middle of the outer side of the door: operate the lock core assembly to rotate a certain angle, drive the safety lock to the safety unlocking position through the safety lock shaft, then press the sliding assembly to a certain distance, drive the main lock to rotate a certain angle through the main lock shaft so that the main lock tongue begins to retract and disengage from the middle lock position, and at the same time, the safety lock begins to automatically reset to lock under the drive of the main lock tongue. After the safety lock is actuated, the upper secondary lock assembly and the lower secondary lock assembly respectively drive the upper pull rod and the lower pull rod to make the secondary lock tongue begin to retract and disengage from the secondary lock position, realizing three-point unlocking. After the removal operation, the main lock, the sliding assembly and the safety lock reset themselves;

[0015] When the door is opened on the outer track surface: operate the track surface lock core assembly to rotate a certain angle, and drive the safety lock shaft to rotate through the track surface safety shaft and the safety lock pull rod assembly, thereby driving the safety lock to the safety unlocking, and then press the track surface sliding assembly to a certain distance, and drive the main lock shaft to rotate through the track surface main shaft and the main lock pull rod assembly, thereby driving the main lock to rotate a certain angle so that the main lock tongue begins to retract and disengage from the middle lock gear. At the same time, the safety lock begins to automatically reset to locked under the drive of the main lock tongue. After the safety lock is actuated, the upper secondary lock assembly and the lower secondary lock assembly respectively drive the upper pull rod and the lower pull rod to make the secondary lock tongue begin to retract and disengage from the secondary lock gear, realizing three-point unlocking. After the removal operation, the main lock, the track surface sliding assembly and the safety lock reset themselves.

[0016] When closing the door from the middle of the outer side or the track surface: pull the door leaf from the outside to close it until the three-point lock tongue hits the lock block, retracts and then extends again, cooperating with the three-point lock block. During the process, the safety lock does not move and remains in the locked state, thus realizing three-point locking and closing the door.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention realizes that the door lock can be operated on the track surface and also has the functions of safety self-reset and three-point locking linkage, and is adapted to the complex outer curved surface of the vehicle body, meeting the requirements of smooth outer surface and comfortable operating space. The door lock of the present invention realizes the same level of operation authority of the track surface lock and the intermediate main lock, including safety unlocking and safety self-reset, avoiding the inability to operate the door on the track surface or the need to operate the safety lock part after closing the door on the track surface, simplifying the operating steps and improving the efficiency of opening and closing the door. The outer lock of the door lock and the track surface lock of the present invention both adopt a modular design of press-operated type, which can adapt to the contour of the complex curved vehicle body, ensuring the smoothness of the outer surface while improving the hand operation space on the outside, improving the beauty of the whole vehicle and the comfort of human-machine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the three-point locking device of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the locked state of the three-point locking device of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the unlocked state of the three-point locking device of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the main lock assembly, upper and lower pull rods, upper and lower auxiliary lock assemblies and the lock gear assembly of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the outer lock assembly, the rail surface outer lock assembly, the rail surface lock assembly, the main lock pull rod assembly and the safety pull rod assembly of the present invention;

[0023] In the figure, 1 is the main lock assembly; 2 is the upper secondary lock assembly; 3 is the lower secondary lock assembly; 4 is the outer lock assembly; 5 is the track outer lock assembly; 6 is the track lock assembly; 7 is the upper pull rod; 8 is the lower pull rod; 9 is the main lock pull rod assembly; 10 is the safety lock pull rod assembly; 11 is the secondary lock stop; 12 is the middle lock stop; 13 is the safety lock; 14 is the main lock; 15 is the main lock tongue; 16 is the main lock shaft; 17 is the safety lock shaft; 18 is the pull rod compression spring; 19 is the pull plate; 20 is the secondary lock box; 21 is the secondary lock tongue; 22 is the track outer lock assembly. The lock box is as follows: 23 is a rail sliding assembly; 24 is a rail lock core assembly; 25 is a mounting plate; 26 is a rail safety shift block; 27 is a rail main shift block; 28 is a rail main shaft; 29 is a rail safety shaft; 30 is a rail safety pull rod; 31 is a rail main lock pull rod; 32 is a main lock adjustment block; 33 is a safety adjustment block; 34 is a safety pull rod; 35 is a main lock pull rod; 36 is a main shift block; 37 is a safety shift block; 38 is a lock core assembly; 39 is an outer lock box; 40 is a sliding assembly; 41 is a protective plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The three-point locking device with integrated track surface linkage and safety self-resetting function of the present invention comprises a main lock assembly 1, an upper auxiliary lock assembly 2, a lower auxiliary lock assembly 3, an outer lock assembly 4, a track surface outer lock assembly 5, a track surface lock assembly 6, an upper pull rod 7, a lower pull rod 8, a main lock pull rod assembly 9, a safety lock pull rod assembly 10, an auxiliary lock stopper 11 and a middle lock stopper 12; the main lock assembly 1, the track surface lock assembly 6, the upper auxiliary lock assembly 2, and the lower auxiliary lock assembly 3 are installed in the sealing surface of the door leaf of a rail transit train, the main lock assembly 1 and the upper auxiliary lock assembly 2 and the lower auxiliary lock assembly 3 are linked by the upper pull rod 7 and the lower pull rod 8, and the middle lock stopper 12 and the auxiliary lock stopper 11 are installed at the inner door frame of the body of the rail transit train; the door lock is locked and unlocked by controlling the lock tongues of the main lock assembly 1, the outer lock assembly 4 and the track surface outer lock assembly 5 to extend and overlap with the lock stopper, and retract and separate from the lock stopper.

[0026] The main lock assembly 1, the upper secondary lock assembly 2, the lower secondary lock assembly 3, the outer lock assembly 4, the track surface outer lock assembly 5, and the track surface lock assembly 6 of the present invention are connected into an integrated structure through an upper pull rod 7, a lower pull rod 8, a main lock pull rod assembly 9, and a safety lock pull rod assembly 10; the main lock assembly 1 and the outer lock assembly 4 are respectively located at the inner and outer sides of the middle part of the door leaf of the rail transit train; the upper secondary lock assembly 2 and the lower secondary lock assembly 3 are respectively located at the upper and lower parts of the inner side of the door leaf of the rail transit train; the track surface outer lock assembly 5 and the track surface lock assembly 6 are respectively located at the inner and outer sides of the lower part of the door leaf of the rail transit train; the middle lock stop 12 is located in the middle of the inner door frame of the car body of the rail transit train, and the secondary lock stop 11 is located at the upper and lower parts of the inner door frame of the car body.

[0027] The main lock assembly 1 of the present invention includes a safety lock 13 and a main lock 14. The main lock 14 is provided with a main lock tongue 15 and a main lock shaft 16. The safety lock 13 is provided with a safety lock shaft 17. The main lock 14 realizes the extension and retraction of the main lock tongue 15 through a dial and a compression spring structure, and realizes the safety lock 13 limiting the action authority of the main lock 14 and the automatic reset of the safety lock 13 after the main lock 14 is unlocked through a dial plate, a limit block and a torsion spring structure.

[0028] The upper secondary lock assembly 2 of the present invention has the same structure as the lower secondary lock assembly 3. The upper secondary lock assembly 2 is provided with a pull rod compression spring 18, a pull plate 19, a secondary lock box 20 and a secondary lock tongue 21. The upper secondary lock assembly 2 realizes the extension and retraction of the secondary lock tongue 21 through a dial and a compression spring structure.

[0029] The external lock assembly 4 of the present invention has the same structure as the rail surface external lock assembly 5. The external lock assembly 4 is provided with a lock core assembly 38, an external lock box 39 and a sliding assembly 40. The rail surface external lock assembly 5 is provided with a rail surface external lock box 22, a rail surface sliding assembly 23 and a rail surface lock core assembly 24. The sliding assembly 40 and the rail surface sliding assembly 23 are provided with a protective plate 41 for protection and increasing the operating space.

[0030] The rail surface lock assembly 6 of the present invention is provided with a mounting plate 25, a rail surface main shaft 28 and a rail surface safety shaft 29, the main lock rod assembly 9 is provided with a rail surface main shift block 27, a rail surface main lock rod 31, a main lock adjustment block 32, a main lock rod 35 and a main shift block 36, and the safety lock rod assembly 10 is provided with a rail surface safety shift block 26, a rail surface safety rod 30, a safety adjustment block 33, a safety rod 34 and a safety shift block 37; the outer lock assembly 4, the rail surface outer lock assembly 5 and the main lock assembly 1 are linked by the main lock shaft 16, the safety lock shaft 17, the rail surface main shaft 28, the rail surface safety shaft 29, the main lock rod assembly 9, and the safety lock rod assembly 10, and the linkage adjustment is achieved by adjusting the main lock adjustment block 32 and the safety adjustment block 33. In this way, the functions of automatic resetting of the safety lock and linkage of the rail surface lock and the intermediate main lock at the same level are achieved.

[0031] When in use, if the safety of any one of the main lock assembly 1, the outer lock assembly 4 and the track surface outer lock assembly 5 is not released, the operating handle or the outer sliding assembly cannot unlock the door lock; after the safety of any one of the main lock assembly 1, the outer lock assembly 4 and the track surface outer lock assembly 5 in the door lock is released, the operating handle or the outer sliding assembly can retract the three lock tongues to achieve unlocking; while the lock tongue retracts, the safety lock 13 begins to reset itself to the safety state, and the handle or the outer sliding assembly is released until the main lock tongue 15 is fully extended, and the safety lock 13 also completes the self-resetting action to the safety state, that is, without re-unlocking the safety, any handle or outer sliding assembly cannot be operated.

[0032] When the door is opened from the inside: operate the safety lock 13 to rotate a certain angle to unlock the safety, then operate the main lock 14 to rotate a certain angle, the main lock tongue 15 begins to retract and disengage from the middle lock gear 12, and at the same time, the safety lock 13 starts to automatically reset to lock under the drive of the main lock tongue 15. After the safety lock 13 is actuated, the upper secondary lock assembly 2 and the lower secondary lock assembly 3 respectively drive the upper pull rod 7 and the lower pull rod 8 to make the secondary lock tongue 21 begin to retract and disengage from the secondary lock gear 11, realizing three-point unlocking. After the removal operation, the main lock 14 and the safety lock 13 reset themselves;

[0033] When the door is closed from the inside: the door leaf is pushed from the inside to close until the three-point lock tongue collides with the lock gear and retracts, and then extends out again, cooperating with the three-point lock gear and overlapping. During the process, the safety lock 13 does not move and remains in the locked state, thereby realizing three-point locking and closing of the door.

[0034] When the door is opened in the middle of the outer side of the door: operate the lock core assembly 38 to rotate a certain angle, drive the safety lock 13 to the safety unlocking through the safety lock shaft 17, and then press the sliding assembly 40 to a certain distance, drive the main lock 14 to rotate a certain angle through the main lock shaft 16 so that the main lock tongue 15 begins to retract and disengage from the middle lock gear 12, and at the same time, the safety lock 13 starts to automatically reset to locked under the drive of the main lock tongue 15. After the safety lock 13 is actuated, the upper secondary lock assembly 2 and the lower secondary lock assembly 3 respectively drive the upper pull rod 7 and the lower pull rod 8 to make the secondary lock tongue 21 begin to retract and disengage from the secondary lock gear 11, realizing three-point unlocking. After the removal operation, the main lock 14, the sliding assembly 40 and the safety lock 13 reset themselves;

[0035] When the door is opened on the outer track surface: operate the track surface lock core assembly 24 to rotate a certain angle, drive the safety lock shaft 17 to rotate through the track surface safety shaft 29 and the safety lock pull rod assembly 10, thereby driving the safety lock 13 to the safety unlocking, and then press the track surface sliding assembly 23 to a certain distance, drive the main lock shaft 16 to rotate through the track surface main shaft 28 and the main lock pull rod assembly 9, thereby driving the main lock 14 to rotate a certain angle so that the main lock tongue 15 begins to retract and disengage from the middle lock gear 12, and at the same time, the safety lock 13 begins to automatically reset to locked under the drive of the main lock tongue 15. After the safety lock 13 is actuated, the upper secondary lock assembly 2 and the lower secondary lock assembly 3 respectively drive the upper pull rod 7 and the lower pull rod 8 to make the secondary lock tongue 21 begin to retract and disengage from the secondary lock block 11, thereby realizing three-point unlocking. After the removal operation, the main lock 14, the track surface sliding assembly 23 and the safety lock 13 reset themselves.

[0036] When closing the door on the middle or track surface of the door outer side: pull the door leaf from the outside to close the door until the three-point lock tongue hits the lock gear and retracts, then extends out again, and overlaps with the three-point lock gear. During the process, the safety lock 13 does not move and remains locked, thus realizing three-point locking and closing the door.

[0037] The present invention provides a three-point locking device for rail trains with integrated track surface linkage function, which can realize the linkage of the track surface lock and the intermediate main lock at the same level, including the automatic resetting of the safety lock and the linkage of the three-point locking. In the locking device of the present invention, the functions of the outer lock assembly, the track surface outer lock assembly and the main lock assembly are linked through the shaft body, the main lock pull rod assembly and the safety pull rod assembly. The outer lock assembly has the same structure as the track surface outer lock assembly and is installed in the door leaf with a press-operated design. Its outer side surface can adapt to the contour of the vehicle body with different curves and ensure the surface is flat. It is respectively provided with an outer lock body, a sliding assembly, a lock core assembly, etc. The operating space of the sliding assembly is increased to improve the operating comfort.

[0038] The present invention realizes that the door lock can be operated on the track surface and also has the functions of safety self-reset and three-point locking linkage, and is adapted to the complex outer curved surface of the vehicle body to meet the requirements of smooth outer surface and comfortable operating space. The door lock of the present invention realizes the same level of operation authority of the track surface lock and the intermediate main lock, including safety unlocking and safety self-reset, to avoid the inability to operate the door on the track surface or the need to operate the safety lock part after closing the door on the track surface, simplifying the operating steps and improving the efficiency of opening and closing the door. The outer lock of the door lock and the track surface lock of the present invention both adopt a modular design of press-operated type, which can adapt to the contour of the vehicle body with complex curved surfaces, ensuring the smoothness of the outer surface while improving the hand operation space on the outside, improving the beauty of the whole vehicle and the comfort of human-machine operation.

Claims

1. A three-point locking device with integrated rail surface linkage and self-reset function, characterized in that: The invention comprises a main lock assembly (1), an upper secondary lock assembly (2), a lower secondary lock assembly (3), an outer lock assembly (4), a track surface outer lock assembly (5), a track surface lock assembly (6), an upper pull rod (7), a lower pull rod (8), a main lock pull rod assembly (9), a safety lock pull rod assembly (10), an auxiliary lock stopper (11) and a middle lock stopper (12); the main lock assembly (1), the track surface lock assembly (6), the upper secondary lock assembly (2) and the lower secondary lock assembly (3) are installed in the sealing surface of the door leaf of a rail transit train; the main lock assembly (1) and the upper secondary lock assembly (2) and the lower secondary lock assembly (3) are linked by the upper pull rod (7) and the lower pull rod (8); the middle lock stopper (12) and the auxiliary lock stopper (11) are installed at the inner door frame of the body of the rail transit train; the door lock is locked and unlocked by controlling the lock tongues of the main lock assembly (1), the outer lock assembly (4) and the track surface outer lock assembly (5) to extend and overlap with the lock stopper, and to retract and separate from the lock stopper.

2. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 1 is characterized in that: The main lock assembly (1), the upper secondary lock assembly (2), the lower secondary lock assembly (3), the outer lock assembly (4), the track surface outer lock assembly (5), and the track surface lock assembly (6) are connected into an integrated structure through an upper pull rod (7), a lower pull rod (8), a main lock pull rod assembly (9), and a safety lock pull rod assembly (10); the main lock assembly (1) and the outer lock assembly (4) are respectively located at the inner and outer sides of the middle part of the door leaf of the rail transit train; the upper secondary lock assembly (2) and the lower secondary lock assembly (3) are respectively located at the upper and lower parts of the inner side of the door leaf of the rail transit train; the track surface outer lock assembly (5) and the track surface lock assembly (6) are respectively located at the inner and outer sides of the lower part of the door leaf of the rail transit train; the middle lock block (12) is located in the middle of the inner door frame of the rail transit train, and the secondary lock block (11) is located at the upper and lower parts of the inner door frame of the rail transit train.

3. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 1 or 2, characterized in that: The main lock assembly (1) comprises a safety lock (13) and a main lock (14); the main lock (14) is provided with a main lock tongue (15) and a main lock shaft (16); the safety lock (13) is provided with a safety lock shaft (17); the main lock (14) realizes the extension and retraction of the main lock tongue (15) through a dial and a compression spring structure; the safety lock (13) limits the action authority of the main lock (14) and automatically resets the safety lock (13) after the main lock (14) is unlocked through a dial plate, a limit block and a torsion spring structure.

4. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 3 is characterized in that: The upper auxiliary lock assembly (2) has the same structure as the lower auxiliary lock assembly (3). The upper auxiliary lock assembly (2) is provided with a pull rod compression spring (18), a pull plate (19), an auxiliary lock box (20) and an auxiliary lock tongue (21). The upper auxiliary lock assembly (2) realizes the extension and retraction of the auxiliary lock tongue (21) through a dial and a compression spring structure.

5. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 4 is characterized in that: The outer locking assembly (4) has the same structure as the rail surface outer locking assembly (5). The outer locking assembly (4) is provided with a lock core assembly (38), an outer locking box (39) and a sliding assembly (40). The rail surface outer locking assembly (5) is provided with a rail surface outer locking box (22), a rail surface sliding assembly (23) and a rail surface lock core assembly (24). The sliding assembly (40) and the rail surface sliding assembly (23) are provided with a protective plate (41) for protecting and increasing the operating space.

6. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 5 is characterized in that: The rail surface lock assembly (6) is provided with a mounting plate (25), a rail surface main shaft (28) and a rail surface safety shaft (29); the main lock pull rod assembly (9) is provided with a rail surface main shift block (27), a rail surface main lock pull rod (31), a main lock adjustment block (32), a main lock pull rod (35) and a main shift block (36); the safety lock pull rod assembly (10) is provided with a rail surface safety shift block (26), a rail surface safety pull rod (30), a safety adjustment block (33), a safety pull rod (34) and a safety shift block (37); the outer lock assembly (4), the rail surface outer lock assembly (5) and the main lock assembly (1) are linked by the main lock shaft (16), the safety lock shaft (17), the rail surface main shaft (28), the rail surface safety shaft (29), the main lock pull rod assembly (9) and the safety lock pull rod assembly (10); and the linkage adjustment is achieved by adjusting the main lock adjustment block (32) and the safety adjustment block (33).

7. The three-point locking device with integrated rail surface linkage and safety self-reset function according to any one of claims 1 to 6, characterized in that: When the safety of any one of the main lock assembly (1), the outer lock assembly (4) and the track outer lock assembly (5) is not released, the operating handle or the outer sliding assembly cannot unlock the door lock; after the safety of any one of the main lock assembly (1), the outer lock assembly (4) and the track outer lock assembly (5) in the door lock is released, the operating handle or the outer sliding assembly can retract the three lock tongues to achieve unlocking; while the lock tongue retracts, the safety lock (13) begins to reset itself to the safety state, and when the handle or the outer sliding assembly is released until the main lock tongue (15) is fully extended, the safety lock (13) also completes the self-resetting action to the safety state, that is, without re-unlocking the safety, any handle or the outer sliding assembly cannot be operated.

8. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 1 is characterized in that: When the door is opened from the inside: the safety lock (13) is operated to rotate a certain angle to unlock the safety, and then the main lock (14) is operated to rotate a certain angle, the main lock tongue (15) begins to retract and disengage from the middle lock gear (12), and at the same time, the safety lock (13) starts to automatically reset to lock under the drive of the main lock tongue (15). After the safety lock (13) is actuated, the upper secondary lock component (2) and the lower secondary lock component (3) are driven by the upper pull rod (7) and the lower pull rod (8) respectively to make the secondary lock tongue (21) begin to retract and disengage from the secondary lock gear (11), thereby realizing three-point unlocking. After the removal operation, the main lock (14) and the safety lock (13) reset themselves; When the door is closed from the inside, the door leaf is pushed from the inside until the three-point lock tongue hits the lock block and retracts, then extends again, and overlaps with the three-point lock block. During the process, the safety lock (13) does not move and remains locked, thus achieving three-point locking and closing of the door.

9. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 8 is characterized in that: When the door is opened from the middle of the outer side of the door: the lock core assembly (38) is operated to rotate a certain angle, and the safety lock (13) is driven to the safety unlocking position through the safety lock shaft (17), and then the sliding assembly (40) is pressed to a certain distance, and the main lock (14) is driven to rotate a certain angle through the main lock shaft (16) so that the main lock tongue (15) begins to retract and disengage from the middle lock gear (12), and at the same time, the safety lock (13) starts to automatically reset to locked under the drive of the main lock tongue (15). After the safety lock (13) is actuated, the upper auxiliary lock assembly (2) and the lower auxiliary lock assembly (3) are driven by the upper pull rod (7) and the lower pull rod (8) respectively to make the auxiliary lock tongue (21) begin to retract and disengage from the auxiliary lock gear (11), thereby realizing three-point unlocking. After the removal operation, the main lock (14), the sliding assembly (40) and the safety lock (13) are automatically reset; When the door is opened on the outer side of the door track: the track lock core assembly (24) is operated to rotate a certain angle, and the track safety shaft (29) and the safety lock pull rod assembly (10) are driven to rotate the safety lock shaft (17), thereby driving the safety lock (13) to the safety unlocking position, and then the track sliding assembly (23) is pressed to a certain distance, and the track main shaft (28) and the main lock pull rod assembly (9) are driven to rotate the main lock shaft (16), thereby driving the main lock (14) to rotate a certain angle to make the main lock tongue (15) ) begins to retract and disengage from the middle lock gear (12), and at the same time, the safety lock (13) begins to automatically reset to locked status under the drive of the main lock tongue (15). After the safety lock (13) is actuated, the upper secondary lock assembly (2) and the lower secondary lock assembly (3) respectively drive the upper pull rod (7) and the lower pull rod (8) to make the secondary lock tongue (21) begin to retract and disengage from the secondary lock gear (11), thereby realizing three-point unlocking. After the removal operation, the main lock (14), the track surface sliding assembly (23) and the safety lock (13) reset themselves.

10. The three-point locking device with integrated rail surface linkage and safety self-reset function according to claim 9, characterized in that: When closing the door at the middle of the outer side of the door or at the track surface: the door leaf is pulled from the outer side to close the door until the three-point lock tongue hits the lock block and retracts, and then extends out again, cooperating with the three-point lock block and overlapping. During the process, the safety lock (13) does not move and still maintains the locked state, thereby realizing the three-point locking and closing of the door.

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