Fan tower door lock

Abstract

The utility model provides a fan tower cylinder door lock which is provided with a door body and a door frame, a pin hole is formed in the door frame, the door lock comprises a shell arranged on the door body, a first space is formed in the shell, a first opening is formed in the shell, a door lock mechanism comprises a door pin assembly and a lock cylinder assembly, and the door pin assembly comprises a door pin shaft body; when the end of the door pin shaft body extends out of the first opening and is inserted into the pin hole, the lock cylinder assembly has an unlocking state and a locking state, in the unlocking state, the door pin shaft body can move, and in the locking state, the door pin shaft body cannot move. The first driving assembly is arranged on the inner side, close to the tower drum, of the shell and used for driving the lock cylinder assembly to be switched between the unlocking state and the locking state. When a person is locked in the tower tube by mistake, the person in the tower tube can control the first driving assembly to be unlocked in the tower tube and pull the door pin shaft body out of the pin hole to escape, so that the personal safety of workers is guaranteed, and the problem of person leaving caused by work errors is also avoided.

Description

Technical Field

[0001] This application relates to the technical field of wind turbine tower accessories, specifically to a wind turbine tower door lock. Background Technology

[0002] With the increasing popularity of wind power generation, wind turbine towers are widely used. These towers are typically quite tall, with a wind turbine housing installed at the top. The interior of the wind turbine is extremely dangerous during operation. To facilitate access for construction personnel, a door frame is installed at the bottom of the tower, fitted with a tower door that is locked to the tower, dividing the space into the inside and outside of the tower. However, wind turbines are usually installed in locations with little foot traffic, and they generate significant noise during operation.

[0003] In the prior art, application number 202021409132.7 discloses a wind turbine tower inlet door assembly with a rainproof elbow. Construction personnel can enter the tower from the outside through the inlet door assembly. However, if someone locks the door from the outside, and there are still people inside, the door cannot be opened from the inside, resulting in people being left behind and unable to escape, causing danger. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a wind turbine tower door lock, wherein the wind turbine tower door has a door body and a door frame, and the door frame has a pin hole, including:

[0005] A housing, which is disposed on the door body, has a first space inside the housing, and has a first opening on the side of the housing near the door frame that communicates with the first space;

[0006] A door lock mechanism, comprising a door pin assembly and a lock cylinder assembly, wherein the door pin assembly comprises a door pin shaft, and when the end of the door pin shaft extends out from the first opening and is inserted into the pin hole, the lock cylinder assembly has an unlocked state and a locked state. In the unlocked state, the door pin shaft can move along a first direction, and in the locked state, the door pin shaft cannot move.

[0007] A first drive assembly is disposed on the housing near the inner side of the tower, and the first drive assembly is used to drive the lock cylinder assembly to switch between the unlocked state and the locked state.

[0008] According to the technical solution provided in the embodiments of this application, the lock cylinder assembly includes a lock cylinder shaft, a portion of which is disposed within the first space and extends in a second direction, the second direction being perpendicular to the first direction; the door lock mechanism is provided with an avoidance structure, the avoidance structure including:

[0009] The first arc groove is located on the side of the door pin shaft near the lock cylinder shaft. When the end of the door pin shaft is inserted into the pin hole, the outer wall of the lock cylinder shaft is in contact with the inner wall of the first arc groove, and the lock cylinder shaft rotates in the first arc groove. The axis of rotation is the second direction.

[0010] The second arc groove is provided on the lock cylinder shaft. When the lock cylinder assembly is in the locked state, the opening of the second arc groove does not face the door pin shaft. When the lock cylinder shaft rotates to the point where the opening of the second arc groove faces the door pin shaft, the lock cylinder assembly switches to the unlocked state. At this time, the door pin shaft can slide in the second arc groove along the first direction.

[0011] According to the technical solution provided in the embodiments of this application, the lock cylinder shaft is fitted with a first lock disc, which is exposed outside the tower; the housing has a first through hole communicating with the first space on its exposed side wall inside the tower; the first drive assembly includes:

[0012] The first pin passes through the first through hole and is inserted into the first locking disc near the inner side of the tower. The first pin is used to restrict the rotation of the first locking disc.

[0013] The first wrench is located at the end of the lock cylinder shaft near the inner side of the tower, and the first wrench is used to rotate the lock cylinder shaft.

[0014] According to the technical solution provided in the embodiments of this application, the lock cylinder shaft has a first boss, and a second lock disc is provided on the outer sleeve of the first boss. The second lock disc is connected to the side of the first lock disc away from the first wrench. There is a first gap between the first boss and the second lock disc, and the first gap is used to insert a key assembly. A plurality of spring assemblies are provided on the first boss near the first wrench side. When the lock cylinder assembly is in the locked state, one end of the spring assembly abuts against the first boss, and the other end abuts against the first lock disc.

[0015] According to the technical solution provided in the embodiments of this application, the first boss has a plurality of semi-circular grooves on the edge near the first wrench side, and half of the end of the spring assembly abuts in the semi-circular groove, while the other half is suspended and exposed in the first gap; when the lock cylinder assembly is in the unlocked state, one end of the spring assembly abuts against the key assembly, and the other end abuts against the first lock disc.

[0016] According to the technical solution provided in the embodiments of this application, the end of the door pin shaft away from the pin hole is provided with a first handle; the side wall of the housing exposed inside the tower is provided with a second opening, and the first handle is exposed outside the first space through the second opening.

[0017] According to the technical solution provided in the embodiments of this application, the shell has a third opening on the side wall exposed outside the tower. The third opening and the second opening are arranged opposite to each other along the second direction. On the opposite side of the first handle, a second handle is also provided on the door pin body. The second handle is exposed outside the first space through the third opening.

[0018] According to the technical solution provided in the embodiments of this application, the key assembly is provided with a guide block, and the second lock disc has a guide groove adapted to the key assembly on the side away from the first lock disc, and the guide block slides in the guide groove.

[0019] According to the technical solution provided in the embodiments of this application, the first boss is provided with a plurality of matching posts on the side away from the first wrench, and the key assembly is provided with a plurality of matching holes on the side close to the first wrench.

[0020] According to the technical solution provided in the embodiments of this application, a first connector is provided on the side of the lock cylinder shaft away from the key assembly, and the first connector is used to connect the lock cylinder shaft and the first wrench.

[0021] In summary, this application proposes a wind turbine tower door lock. The wind turbine tower door has a door body and a door frame, with a pin hole inside the door frame. A housing is disposed on the door body, and the housing has a first space. A first opening communicating with the first space is located on the side of the housing near the door frame. The door lock mechanism includes a door pin assembly and a lock cylinder assembly. The door pin assembly includes a door pin shaft. When the end of the door pin shaft extends from the first opening and is inserted into the pin hole, the lock cylinder assembly has an unlocked state and a locked state. In the unlocked state, the door pin shaft can move along a first direction; in the locked state, the door pin shaft cannot move. A first drive assembly is disposed on the housing near the inner side of the tower, and the first drive assembly is used to drive the lock cylinder assembly to switch between the unlocked and locked states. This solution enables personnel to escape when someone is accidentally locked inside the tower by controlling the lock cylinder assembly to unlock it from inside the tower and then pulling the door pin shaft out of the pin hole. This effectively ensures the personal safety of the personnel and avoids the problem of personnel being left behind due to work errors. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the wind turbine tower door lock provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the lock cylinder shaft and the door pin shaft provided in the embodiments of this application;

[0024] Figure 3 This is an exploded structural diagram of a wind turbine tower door lock provided in an embodiment of this application;

[0025] Figure 4This is a schematic diagram of the structure of the lock cylinder shaft provided in an embodiment of this application.

[0026] The text labels in the image represent:

[0027] 1. Housing; 2. First handle; 3. Second handle; 4. Third opening; 5. First pull pin; 6. First wrench; 61. First connector; 7. First lock disc; 8. Second lock disc; 9. Door pin shaft; 91. First arc groove; 10. Key assembly; 11. Rotating handle; 12. Lock cylinder shaft; 121. Second arc groove; 122. First threaded hole; 123. First boss; 13. Spring assembly; 14. Limiting lock pin; 15. Semi-circular groove; 16. Guide block; 17. Guide groove; 18. Fourth opening; 19. Matching pin. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] As mentioned in the background section, in view of the problems in the prior art, this application proposes a wind turbine tower door lock, wherein the wind turbine tower door has a door body and a door frame, and the door frame has a pin hole, including:

[0031] Housing 1, the housing 1 is disposed on the door body, the housing 1 has a first space inside, and the housing 1 has a first opening communicating with the first space near the door frame side;

[0032] A door lock mechanism, comprising a door pin assembly and a lock cylinder assembly, wherein the door pin assembly comprises a door pin shaft 9, and when the end of the door pin shaft 9 extends out from the first opening and is inserted into the pin hole, the lock cylinder assembly has an unlocked state and a locked state. In the unlocked state, the door pin shaft 9 can move along a first direction, and in the locked state, the door pin shaft 9 cannot move.

[0033] A first drive assembly is disposed on the housing 1 near the inner side of the tower, and the first drive assembly is used to drive the lock cylinder assembly to switch between the unlocked state and the locked state.

[0034] Please refer to Figure 1As shown, the housing 1 is whistle-shaped, comprising a first part that is approximately cylindrical and a second part that is approximately cuboid connected to one of its bottom sides. The first part has a first opening near the door frame side, and the first opening is positioned opposite the pin hole. The door lock mechanism is located within the first space, and the first direction is perpendicular to the side door frame. The lock cylinder assembly is used to lock the door pin assembly, that is, when the door pin shaft 9 is inserted into the pin hole, the lock cylinder assembly is used to lock or unlock the door pin shaft 9. In the locked state, it restricts the door pin shaft 9 from being pulled out; in the unlocked state, it releases the door... The door pin 9 can be moved freely, allowing it to be pulled out. Both the door pin assembly and the lock cylinder assembly have exposed portions inside and outside the tower. These portions are exposed outside the first space and are located on the inner and outer sides of the tower, respectively, allowing personnel inside and outside the tower to control the situation accordingly. This solution enables personnel inside the tower to unlock the lock cylinder assembly and pull out the door pin 9 from the pin hole when someone is accidentally locked inside the tower, thus escaping. This effectively ensures the personal safety of the staff and avoids the problem of personnel being left behind due to work errors.

[0035] In a preferred embodiment, the lock cylinder assembly includes a lock cylinder shaft 12, a portion of which is disposed within the first space and extends in a second direction perpendicular to the first direction; the door lock mechanism is provided with an avoidance structure, the avoidance structure including:

[0036] The first arc groove 91 is provided on the side of the door pin shaft 9 near the lock cylinder shaft 12. When the end of the door pin shaft 9 is inserted into the pin hole, the outer wall of the lock cylinder shaft 12 is in contact with the inner wall of the first arc groove 91. The lock cylinder shaft 12 rotates in the first arc groove 91, and the axis of rotation is the second direction.

[0037] The second arc groove 121 is provided on the lock cylinder shaft 12. When the lock cylinder assembly is in the locked state, the opening of the second arc groove 121 does not face the door pin shaft 9. When the lock cylinder shaft 12 rotates to the point where the opening of the second arc groove 121 faces the door pin shaft 9, the lock cylinder assembly switches to the unlocked state. At this time, the door pin shaft 9 can slide in the second arc groove 121 along the first direction.

[0038] Please refer to Figure 3 and Figure 4As shown, the second direction is perpendicular to the two opposite sidewalls of the housing 1 exposed inside and outside the tower. The lock cylinder shaft 12 is perpendicularly connected to the door pin shaft 9, and the door pin shaft 9 is located below the lock cylinder shaft 12. The contact portions of the lock cylinder shaft 12 and the door pin shaft 9 are both cylindrical structures. The groove shape and curvature of the first arc groove 91 are adapted to the outer cylindrical outer wall of the lock cylinder shaft 12, and the groove shape and curvature of the second arc groove 121 are adapted to the outer cylindrical outer wall of the door pin shaft 9.

[0039] When the lock cylinder assembly is in the unlocked state, the second arc groove 121 faces the door pin shaft 9. The door pin shaft 9 can slide in the second arc groove 121 along the first direction. When the end of the door pin shaft 9 is inserted into the pin hole, the first arc groove 91 is exactly at the bottom of the lock cylinder shaft 12. The lock cylinder shaft 12 is then embedded in the first arc groove 91. The first arc groove 91 and the second arc groove 121 are now facing each other. The lock cylinder shaft 12 can rotate due to the avoidance of the first arc groove 91. After rotation, the first arc groove 91 rotates away and disengages from the door pin shaft 9. At this time, the door pin shaft 9 cannot slide along the first direction due to the lack of avoidance space from the second arc groove 121, and is in the locked state. Personnel inside and outside the tower can control the unlocked state and the locked state of the lock cylinder assembly by rotating the lock cylinder shaft 12 to control the position of the second arc groove 121.

[0040] In a preferred embodiment, the lock cylinder shaft 12 is fitted with a first lock disc 7, which is exposed outside the tower; the housing 1 has a first through hole communicating with the first space on its exposed side wall inside the tower; the first drive assembly includes:

[0041] The first pin 5 passes through the first through hole and is inserted into the first locking plate 7 near the inner side of the tower. The first pin 5 is used to restrict the rotation of the first locking plate 7.

[0042] The first wrench 6 is located at the end of the lock cylinder shaft 12 near the inner side of the tower, and is used to rotate the lock cylinder shaft 12.

[0043] In a preferred embodiment, the pin shaft body 9 is provided with a first handle 2 at the end away from the pin hole; the housing 1 is provided with a second opening on the side wall exposed inside the tower, and the first handle 2 is exposed outside the first space through the second opening.

[0044] Please refer to Figure 1 and Figure 3As shown, the first locking disc 7 has a disc-shaped structure. The housing 1 has a fourth opening 18, which faces the outside of the tower and communicates with the first space. The first locking disc 7 is located on the side of the fourth opening 18 away from the first wrench 6. The first pull pin 5 serves as its positioning pin, and the lock cylinder shaft 12 serves as a connecting structure, together mounting the first locking disc 7. The first locking disc 7 has a limiting hole on the side near the first wrench 6. One end of the first pull pin 5 is inserted into the limiting hole, and the other end passes through the first through hole and is exposed in the space inside the tower. The first pull pin 5 and the first lock cylinder shaft 12 are connected to the first locking disc 7. The housing 1 together limits the rotation of the first lock disc 7. When the first pull pin 5 is inserted into the limiting hole, the first pull pin 5 jams the first lock disc 7, and the first lock disc 7 cannot rotate. When personnel inside the tower need to perform an unlocking operation, they need to pull out the first pull pin 5 and turn the first wrench 6 to drive the lock cylinder shaft 12 to rotate. At this time, the first lock disc 7 rotates synchronously. After the lock cylinder shaft 12 rotates, when the second arc groove 121 is turned to provide clearance space for the door pin shaft 9, the first handle 2 is pulled to pull the door pin shaft 9 out of the pin hole, and the door lock is opened for escape.

[0045] In a preferred embodiment, the lock cylinder shaft 12 has a first boss 123, and a second lock disc 8 is sleeved on the first boss 123. The second lock disc 8 is connected to the side of the first lock disc 7 away from the first wrench 6. There is a first gap between the first boss 123 and the second lock disc 8, and the first gap is used to insert the key assembly 10. A plurality of spring assemblies 13 are provided on the side of the first boss 123 near the first wrench 6. When the lock cylinder assembly is in the locked state, one end of the spring assembly 13 abuts against the first boss 123 and the other end abuts against the first lock disc 7.

[0046] In a preferred embodiment, the first boss 123 has a plurality of semi-circular grooves 15 on the edge near the first wrench 6. Half of the end of the spring assembly 13 abuts in the semi-circular groove 15, and the other half is suspended and exposed in the first gap. When the lock cylinder assembly is in the unlocked state, one end of the spring assembly 13 abuts against the key assembly 10, and the other end abuts against the first lock disc 7.

[0047] In a preferred embodiment, the first boss 123 is provided with a plurality of matching posts 19 on the side away from the first wrench 6, and the key assembly 10 is provided with a plurality of matching holes on the side close to the first wrench 6.

[0048] In a preferred embodiment, the housing 1 has a third opening 4 on the side wall exposed outside the tower cylinder. The third opening 4 is arranged opposite to the second opening along the second direction. On the opposite side of the first handle 2, a second handle 3 is also provided on the door pin body 9. The second handle 3 is exposed outside the first space through the third opening 4.

[0049] Please refer to Figure 2 and Figure 3 As shown, the diameter of the first lock disc 7 is larger than the diameter of the second lock disc 8, and they are integrally formed. The lock cylinder shaft 12 is T-shaped, and the first boss 123 is the T-shaped head of the lock cylinder shaft 12. The diameter of the first boss 123 is larger than the cylinder connected to it. The key assembly 10 includes a cylindrical structure and a rotating handle 11 provided on the outside of the cylindrical structure. The bottom of the inner cavity of the cylindrical structure has four matching holes that match the matching post 19. When the key assembly 10 is inserted, the matching post 19 is inserted into the matching hole. After successful matching, the key assembly 10 can be turned to drive the lock cylinder shaft 12 to rotate. The spring assembly 13 includes three springs arranged in a circumferential array, and a limiting lock pin 14 outside the springs. After the cylindrical structure is inserted into the first gap, it lifts up half of the three springs that are suspended, thus lifting each spring as a whole. At this time, the first lock disc 7 and the lock cylinder shaft 12 are separated. The key assembly 10 rotates, causing the first boss 123 to rotate, that is, the lock cylinder shaft 12 rotates. At this time, the lock cylinder assembly is in the unlocked state.

[0050] When a person outside the tower locks the door, the spring is in a released state, with one end resting against the first lock disc 7 and the other end against the lock cylinder shaft 12, restricting the rotation of the lock cylinder shaft 12 and preventing the door pin shaft 9 from being pulled out. When a person outside the tower unlocks the door, they press in the key assembly 10, and the spring is in a stored state. The key assembly 10 pushes against the half of the spring that is suspended and moves towards the inside of the tower, causing the spring to disengage from the semi-circular groove and release the restriction on the lock cylinder shaft 12. Turning the key assembly 10 causes the lock cylinder shaft 12 to rotate. At this time, rotating the lock cylinder shaft 12 to the second arc groove 121 provides clearance space for the door pin shaft 9. Pulling the second handle 3 pulls the door pin shaft 9 out of the pin hole and unlocks the door.

[0051] Please refer to Figure 3As shown, one end of the first handle 2 and the second handle 3 are threadedly connected to the threaded hole at the end of the door pin body 9 away from the pin hole. The second opening and the third opening 4 are approximately rectangular in shape with rounded ends, which are adapted to the outer wall shape of the first handle 2 and the second handle 3. The length direction of the rectangle is the first direction. The first handle 2 and the second handle 3 are arranged opposite each other and move synchronously. The other end of the first handle 2 and the second handle 3 are exposed inside and outside the tower through the second opening and the third opening 4.

[0052] In a preferred embodiment, the lock cylinder shaft 12 is provided with a first connector 61 on the side away from the key assembly 10, and the first connector 61 is used to connect the lock cylinder shaft 12 and the first wrench 6.

[0053] Please refer to Figure 3 As shown, the first connector 61 consists of two bolts. The end of the lock cylinder shaft 12 away from the key assembly 10 is provided with a first threaded hole 122. The first wrench 6 is sleeved on the end of the lock cylinder shaft 12 and is fixed in the first threaded hole 122 by the two first connectors 61 and connected to the lock cylinder shaft 12.

[0054] In a preferred embodiment, the key assembly 10 is provided with a guide block 16, and the second lock disc 8 has a guide groove 17 adapted to the key assembly 10 on the side away from the first lock disc 7, and the guide block 16 slides in the guide groove 17.

[0055] Please refer to Figure 3 As shown, the cylindrical key assembly 10 has a semi-cylindrical guide block 16 near the first lock disc 7. When the guide block 16 is inserted into the guide groove 17, it can rotate. After rotation, the guide block 16 can be stuck on the outer shell of the second lock disc 8 and cannot be pulled out. When the guide block 16 rotates into the guide groove 17, the key assembly 10 can be pulled out.

[0056] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A wind turbine tower door lock, the wind turbine tower door having a door body and a door frame, the door frame having a pin hole therein, characterised by, The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state.

2. The fan tower door lock of claim 1, wherein: The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. The utility model relates to a door lock mechanism, which comprises a shell (1) provided on a door body, a first space in the shell (1), a first opening on the shell (1) near a door frame side and in communication with the first space, a door bolt assembly comprising a door bolt shaft (9), and a lock cylinder assembly having an unlocked state and a locked state, wherein when the door bolt shaft (9) is inserted into a pin hole with an end thereof extending out of the first opening, the door bolt shaft (9) can move in a first direction in the unlocked state, and the door bolt shaft (9) cannot move in the locked state. ​ 3. The fan tower door lock of claim 2, wherein: ​ ​ ​ 4. The fan tower door lock of claim 3, wherein: The lock core shaft body (12) has a first boss (123), the first boss (123) is provided with a second lock disc (8), the second lock disc (8) is connected to the first lock disc (7) away from the first wrench (6) side;The first boss (123) and the first gap before the second lock disc (8) are used for inserting the key assembly (10);The first boss (123) is provided with a plurality of spring assemblies (13) on the side close to the first wrench (6), when the lock core assembly is in the locked state, one end of the spring assembly (13) abuts against the first boss (123), and the other end abuts against the first lock disc (7).

5. The fan tower door lock of claim 4, wherein: The edge of the first boss (123) close to the first wrench (6) side has a plurality of semicircular grooves (15), the end of the spring assembly (13) is abutted in the semicircular groove (15), the other half is suspended, exposed in the first gap;When the lock core assembly is in the unlocked state, one end of the spring assembly (13) abuts against the key assembly (10), and the other end abuts against the first lock disc (7).

6. The fan tower door lock of claim 5, wherein: The door pin shaft body (9) is provided with a first handle (2) away from the pin hole end;The side wall of the shell (1) exposed in the tower cylinder is provided with a second opening, the first handle (2) is exposed outside the first space through the second opening.

7. The fan tower door lock of claim 6, wherein: The side wall of the shell (1) exposed outside the tower cylinder is provided with a third opening (4), the third opening (4) and the second opening are arranged opposite along the second direction, the opposite side of the first handle (2), a second handle (3) is further arranged on the door pin shaft body (9), the second handle (3) is exposed outside the first space through the third opening (4).

8. The fan tower door lock of claim 6, wherein: The key assembly (10) is provided with a guide block (16), the second lock disc (8) away from the first lock disc (7) side has a guide groove (17) matched with the key assembly (10), the guide block (16) slides in the guide groove (17).

9. The fan tower door lock of claim 6, wherein: The first boss (123) is provided with a plurality of matching columns (19) away from the first wrench (6) side, the key assembly (10) is provided with a plurality of matching holes close to the first wrench (6) side.

10. The fan tower door lock of claim 4, wherein: The lock core shaft body (12) is provided with a first connecting piece (61) away from the key assembly (10) side, the first connecting piece (61) is used for connecting the lock core shaft body (12) and the first wrench (6).

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