Elevator landing door lock device

Abstract

The utility model provides an elevator landing door lock device which comprises a fixed bottom plate and a door lock mechanism, a rolling wheel is arranged at the front end of the right side of a movable lock hook, a balance weight wheel is arranged at the tail end of the right side of the movable lock hook, a lock hook piece is arranged on the left side of the movable lock hook, and a second contact plug is arranged at the top end of the left side of the lock hook piece. A first hook groove and a second hook groove in the top ends of a door knife closing and loosening roller, a first connecting plate and a second connecting plate horizontally move towards the center to be close to each other under the contraction force of a reset spring, and a counterweight wheel enables a movable lock hook to move upwards through a rotating shaft under the action of the gravity of the counterweight wheel. And in the closing process, the second contact plug moves along with the second connecting plate, the second contact plug is inserted into the second electrical verification switch, the landing door is closed, and after the two contacts are connected at the same time, the elevator runs normally, so that the safety protection performance is enhanced, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator landing door lock device. Background Art

[0002] The elevator door lock is an important part of the elevator landing door system. It locks the elevator landing door. Through the cooperation of the movable door knife in the elevator door opener and the door lock, the opening and closing of the landing door are realized. It is an important elevator safety component.

[0003] According to the search, the publication number is: CN221256422U, an elevator landing door lock device, including a mounting bracket. A spring assembly is arranged on the mounting bracket. One end of the spring assembly is connected to a lock hook rocker arm. A rotating shaft is arranged beside the spring assembly. The lock hook rocker arm is connected to the mounting bracket through the rotating shaft. A roller assembly is arranged on the rotating shaft. The end of the lock hook rocker arm far from the spring assembly is connected to a lock hook. The lock hook is arranged at the bottom end of a mounting base. A contact base is arranged on the mounting base. A protective shell is arranged outside the contact base. The protective shell is arranged on the mounting base. One end of the protective shell is open. A lock hook contact is arranged inside the open end of the protective shell. The end of the lock hook contact far from the contact base is connected to the lock hook rocker arm. In the utility model, by arranging the elastic sheet contact and the lock hook contact in the open slot of the contact base, the elastic sheet contact and the lock hook contact are arranged in a built-in manner, avoiding their exposure outside. At the same time, in cooperation with the use of the protective shell, it avoids finger contact, improves the protection effect of the shell, meets the product use requirements, prolongs its service life, and reduces costs.

[0004] However, when implementing the above technical solutions, the following problems exist: Although in the above technical solutions, by arranging the elastic sheet contact and the lock hook contact in the open slot of the contact base, the elastic sheet contact and the lock hook contact are arranged in a built-in manner, improving the protection effect of the shell. However, at present, people attach great importance to elevator safety. Although a protective shell is used to protect the contacts, having only one contact makes the system insufficient in safety. When a single contact fails or is damaged, the function of the entire lock device will be affected, thus affecting the normal operation and safety of the elevator. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an elevator landing door lock device to solve the problems in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An elevator landing door lock device, comprising a fixed bottom plate and a door lock mechanism. A return spring is provided at the front end of the fixed bottom plate. The door lock mechanism is provided at the bottom of the return spring. A first electrical verification switch is provided at the bottom of the return spring. A first contact plug is provided at the bottom of the first electrical verification switch. A moving lock hook is provided at the bottom of the first contact plug. A roller is provided at the front end of the right side of the moving lock hook. A rotating shaft is provided on the right side of the roller. A slot is provided at the bottom side of the rotating shaft. A limiting wheel is provided inside the slot. A counterweight wheel is provided at the right end of the moving lock hook. A first connecting plate is provided inside the right end of the moving lock hook. A first hook groove is provided at the top of the right side of the first connecting plate. A lock hook member is provided on the left side of the moving lock hook. A second contact plug is provided at the top of the left side of the lock hook member. A second electrical verification switch is provided on the right side of the second contact plug. A second connecting plate is provided on the left side of the lock hook member. A second hook groove is provided at the top of the left side of the second connecting plate.

[0007] Preferably, the fixed bottom plate and the return spring are connected by screws. Two return springs are oppositely arranged at the front end of the fixed bottom plate.

[0008] Preferably, the first electrical verification switch and the first contact plug are connected by a slot. The second contact plug and the second electrical verification switch are connected by a slot.

[0009] Preferably, the moving lock hook forms a movable structure with the fixed bottom plate through the rotating shaft. The counterweight wheel can lock the moving lock hook and the lock hook member by its own gravity.

[0010] Preferably, the roller and the moving lock hook are connected by screws. The counterweight wheel and the moving lock hook are connected by screws.

[0011] Preferably, the limiting wheel and the first connecting plate are connected by screws. The limiting wheel passes through the slot to limit the moving lock hook.

[0012] Preferably, the return spring and the first hook groove are connected by a lock. The return spring and the second hook groove are connected by a lock.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] When the landing door needs to be opened, the roller is subjected to the force of the door knife opening and closing, causing the roller to move downward, driving the moving locking hook downward, so that the moving locking hook disengages from the locking hook member. The slot on the moving locking hook moves obliquely, and the limiting wheel can limit it. At this time, the first connecting plate and the second connecting plate are respectively translated to both sides by the braking force of the car door. When closing, the door knife closes and releases the roller. The first hook slot and the second hook slot at the top of the first connecting plate and the second connecting plate move closer to the middle under the contraction force of the return spring. Under the action of its own gravity, the counterweight wheel makes the moving locking hook move upward through the rotating shaft and locks with the locking member. The first contact plug is inserted into the first electrical verification switch, indicating that the locking hook is stable. During the closing process, the second contact plug moves with the second connecting plate and is inserted into the second electrical verification switch, indicating that the landing door has been closed. After both contacts are connected simultaneously, the elevator operates normally, enhancing safety protection and having high safety. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is a schematic diagram of a partial structure of the door lock mechanism of the present invention;

[0017] Figure 3 is a schematic diagram of the structure of the return spring of the present invention;

[0018] Figure 4 is a schematic diagram of an enlarged structure at point A of the present invention.

[0019] Reference numerals in the drawings: 1, fixed bottom plate; 2, return spring; 3, door lock mechanism; 301, first electrical verification switch; 302, first contact plug; 303, moving locking hook; 304, roller; 305, rotating shaft; 306, slot; 307, limiting wheel; 308, counterweight wheel; 309, first connecting plate; 310, first hook slot; 311, locking member; 312, second contact plug; 313, second electrical verification switch; 314, second connecting plate; 315, second hook slot. Detailed Description of the Embodiment

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: an elevator landing door lock device, including a fixed bottom plate 1 and a door lock mechanism 3. A reset spring 2 is arranged at the front end of the fixed bottom plate 1, and the door lock mechanism 3 is arranged at the bottom of the reset spring 2. A first electrical verification switch 301 is arranged at the bottom of the reset spring 2, a first contact plug 302 is arranged at the bottom of the first electrical verification switch 301, a moving lock hook 303 is arranged at the bottom of the first contact plug 302, a roller 304 is arranged at the front end of the right side of the moving lock hook 303, a rotating shaft 305 is arranged on the right side of the roller 304, a slot 306 is opened at the bottom side of the rotating shaft 305, a limiting wheel 307 is arranged inside the slot 306, a counterweight wheel 308 is arranged at the right end of the moving lock hook 303, a first connecting plate 309 is arranged inside the right end of the moving lock hook 303, a first hook groove 310 is arranged at the top of the right side of the first connecting plate 309, a lock hook member 311 is arranged on the left side of the moving lock hook 303, a second contact plug 312 is arranged at the top of the left side of the lock hook member 311, a second electrical verification switch 313 is arranged on the right side of the second contact plug 312, a second connecting plate 314 is arranged on the left side of the lock hook member 311, and a second hook groove 315 is arranged at the top of the left side of the second connecting plate 314.

[0022] Furthermore, the fixed bottom plate 1 and the reset spring 2 are connected by screws. Two reset springs 2 are oppositely arranged at the front end of the fixed bottom plate 1. Through such a setting, the stability and durability can be enhanced, ensuring that there will be no loosening or failure during long-term use, thereby improving the safety and reliability of elevator operation.

[0023] Furthermore, the first electrical verification switch 301 and the first contact plug 302 are connected by a slot, and the second contact plug 312 and the second electrical verification switch 313 are connected by a slot. Through such a setting, the overall safety of the elevator is increased, and the safety is high.

[0024] Furthermore, the moving lock hook 303 forms a movable structure with the fixed bottom plate 1 through the rotating shaft 305. The counterweight wheel 308 can lock the moving lock hook 303 and the lock hook member 311 through its own gravity. Through such a setting, the self-weight of the counterweight wheel 308 can automatically lock the moving lock hook 303 and the lock hook member 311 without external force intervention, simplifying the operation process of the door lock and improving the use efficiency and safety of the elevator.

[0025] Furthermore, the roller 304 and the moving lock hook 303 are connected by screws, and the counterweight wheel 308 and the moving lock hook 303 are connected by screws. Through such a setting, the durability and stability of the door lock device are enhanced, ensuring that it can still maintain a good working state under frequent use and various operating conditions, thereby extending the service life of the elevator equipment.

[0026] Furthermore, the limiting wheel 307 and the first connecting plate 309 are connected by screws. The limiting wheel 307 passes through the slotted groove 306 to limit the moving locking hook 303. With this setting, the stable connection between the limiting wheel 307 and the first connecting plate 309 is ensured. The setting of the limiting wheel 307 can effectively control the movement range of the moving locking hook 303 through the slotted groove 306, improving the safety and reliability of elevator operation.

[0027] Furthermore, the return spring 2 and the first hook groove 310 are connected by a latch, and the return spring 2 and the second hook groove 315 are connected by a latch. With this setting, the tight combination between the return spring 2 and the first hook groove 310 and the second hook groove 315 is ensured, which can effectively maintain the stability of the door lock device and improve the maintenance efficiency.

[0028] Working principle: First, when the landing door needs to be opened, the roller 304 is subjected to the force of the door knife opening and closing, causing the roller 304 to move downward, driving the moving locking hook 303 downward, so that the moving locking hook 303 disengages from the locking hook member 311. The slotted groove 306 on the moving locking hook 303 moves obliquely, and the limiting wheel 307 can limit it. At this time, the first connecting plate 309 and the second connecting plate 314 are respectively translated to both sides under the braking force of the car door. When closing, the door knife closes, releasing the roller 304. The first hook groove 310 and the second hook groove 315 at the top of the first connecting plate 309 and the second connecting plate 314 move closer to the middle under the contraction force of the return spring 2. Under the action of its own gravity, the counterweight wheel 308 makes the moving locking hook 303 move upward through the rotating shaft 305 to lock with the locking hook member 311. The first contact plug 302 is inserted into the first electrical verification switch 301, indicating that the locking hook is stable. During the closing process, the second contact plug 312 moves with the second connecting plate 314 and is inserted into the second electrical verification switch 313, indicating that the landing door has been closed. After both contacts are connected, the elevator operates normally, enhancing the safety protection and having high safety. In this way, the use process of an elevator landing door lock device is completed.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator landing door lock device, comprising a fixed bottom plate (1) and a door lock mechanism (3), characterized in that: A reset spring (2) is provided at the front end of the fixed bottom plate (1). A door lock mechanism (3) is provided at the bottom of the reset spring (2). A first electrical verification switch (301) is provided at the bottom of the reset spring (2). A first contact plug (302) is provided at the bottom of the first electrical verification switch (301). A moving lock hook (303) is provided at the bottom of the first contact plug (302). A roller (304) is provided at the front end on the right side of the moving lock hook (303). A rotating shaft (305) is provided on the right side of the roller (304). A slot (306) is provided on the bottom side of the rotating shaft (305). A limiting wheel (307) is provided inside the slot (306). A counterweight wheel (308) is provided at the right end of the moving lock hook (303). A first connecting plate (309) is provided inside the right end of the moving lock hook (303). A first hook groove (310) is provided at the top right end of the first connecting plate (309). A lock hook member (311) is provided on the left side of the moving lock hook (303). A second contact plug (312) is provided at the top left end of the lock hook member (311). A second electrical verification switch (313) is provided on the right side of the second contact plug (312). A second connecting plate (314) is provided on the left side of the lock hook member (311). A second hook groove (315) is provided at the top left end of the second connecting plate (314).

2. The elevator landing door lock device according to claim 1, wherein: The fixed bottom plate (1) and the reset spring (2) are connected by screws, and two reset springs (2) are oppositely arranged at the front end of the fixed bottom plate (1).

3. The elevator landing door lock device according to claim 1, characterized in that: The first electrical verification switch (301) and the first contact plug (302) are connected by a slot, and the second contact plug (312) and the second electrical verification switch (313) are connected by a slot.

4. The elevator landing door lock device according to claim 1, characterized in that: The moving lock hook (303) and the fixed bottom plate (1) form a movable structure through the rotating shaft (305), and the counterweight wheel (308) can lock the moving lock hook (303) and the lock hook member (311) by its own gravity.

5. The elevator landing door lock device according to claim 1, characterized in that: The roller (304) and the moving lock hook (303) are connected by screws, and the counterweight wheel (308) and the moving lock hook (303) are connected by screws.

6. The elevator landing door lock device according to claim 1, characterized in that: The limiting wheel (307) and the first connecting plate (309) are connected by screws, and the limiting wheel (307) passes through the slot (306) to limit the moving lock hook (303).

7. The elevator landing door lock device according to claim 1, characterized in that: The reset spring (2) and the first hook groove (310) are connected by a lock, and the reset spring (2) and the second hook groove (315) are connected by a lock.

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