Safety type elevator landing door lock device

Abstract

The invention belongs to the technical field of elevator landing door locks, and particularly relates to a safety type elevator landing door lock device which comprises a lock hook assembly and a lock gear assembly, a lock hook of the lock hook assembly is in limiting fit with a lock gear of the lock gear assembly through a limiting block, a telescopic block is slidably connected into the limiting block, and the telescopic block is in limiting fit with the lock gear after stretching out; the telescopic block is in transmission connection with a driving part. During use, when the lock gear and the lock hook are in a meshed limiting state, the telescopic block in the limiting block stretches out and is buckled below the lock gear, and the situation that people are injured due to the fact that an elevator landing door is accidentally opened due to the fact that the meshing depth is insufficient due to the fact that a door lock is not completely closed is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator hall door locks, and in particular relates to a safety elevator floor door lock device. Background Art

[0002] As an important vertical transportation tool, elevators have been widely used in various occasions in life. In the field of elevator technology, elevator door locks are an important part of elevator safety operation. The engagement depth of elevator door locks is one of the important safety indicators of elevator door locks. When the engagement depth of elevator door locks is insufficient, the overall safety performance of the elevator is greatly affected.

[0003] When the elevator stops at a floor, the lock hook cannot securely lock the lock gear, and the floor door may open due to a slight external force collision or vibration, which will not only scare the passengers, but may also cause them to slip and fall into the shaft when entering or exiting the elevator.

[0004] Therefore, a safe elevator floor door lock device is urgently needed to solve the problem. Summary of the invention

[0005] The object of the present invention is to provide a safe elevator floor door locking device to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A safety elevator landing door lock device comprises a lock hook assembly and a lock gear assembly, wherein the lock hook of the lock hook assembly and the lock gear of the lock gear assembly are limitedly matched through a limit block, a telescopic block is slidably connected in the limit block, and the telescopic block is limitedly matched with the lock gear after being extended;

[0008] The telescopic block is transmission-connected with a driving part.

[0009] According to the above-mentioned safe elevator floor door lock device, a connecting rod is fixedly connected to the end of the telescopic block, and a pop-up spring is sleeved on the connecting rod. One end of the pop-up spring is fixedly connected to the end of the telescopic block, and the other end of the pop-up spring is fixedly connected to the inner wall of the limit block. The pop-up spring is extended to make the telescopic block slide out of the limit block, and the connecting rod is slidably connected to the inner wall of the limit block. The end of the connecting rod away from the telescopic block is transmission-connected to the driving part.

[0010] According to the above-mentioned safe elevator floor door lock device, the driving part includes a cable, one end of the cable is fixedly connected to an end of the connecting rod away from the telescopic block;

[0011] The other end of the cable passes through the guide portion and is wound around the spool of the wire take-up box;

[0012] The spool is provided with a rotating part, and the rotating part is used to drive the spool to rotate so as to wind the cable; the rotating part can compress the pop-up spring.

[0013] According to the above-mentioned safe elevator floor door lock device, the guide portion includes a first pulley, a second pulley and a third pulley;

[0014] The first pulley and the second pulley are rotatably arranged at two ends of the lock hook respectively, the second pulley is arranged close to the wire take-up box, and the first pulley is arranged close to the limit block;

[0015] The wire take-up box is rotatably connected to a third pulley;

[0016] One end of the cable is wound around the spool of the wire take-up box through the first pulley, the second pulley and the third pulley in sequence.

[0017] According to the above-mentioned safe elevator floor door lock device, it also includes an angle sensor, which is arranged in the wire take-up box and is used to detect the rotation angle of the wire shaft.

[0018] According to the above-mentioned safe elevator floor door lock device, the cable is wrapped with a cable protection cover, the cable protection cover is fixed on the lock hook, and the cable and the cable protection cover are slidably arranged.

[0019] According to the above-mentioned safe elevator floor door lock device, the lock hook assembly includes a lock hook base, the lock hook is rotatably arranged on the lock hook base, one end of the lock hook away from the limit block is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to the lock hook base through a spring mounting seat;

[0020] A limit screw is fixedly connected to the lock hook, and the limit screw is used to prevent the lock hook from rotating excessively;

[0021] An emergency door opening connecting rod is fixedly connected to one end of the bottom of the lock hook close to the lock gear;

[0022] The top of the lock hook is rotatably provided with a first roller for cooperating with the elevator door opener;

[0023] A second roller is rotatably connected to the lock hook base, and a rotation axis of the second roller is coaxially arranged with a rotation axis of the lock hook.

[0024] According to the above-mentioned safe elevator floor door lock device, the lock gear assembly includes a lock gear base, the lock gear is fixed to the lock gear base, and the lock gear base is provided with a detection part for detecting whether the lock hook is in place.

[0025] According to the above-mentioned safe elevator floor door lock device, the detection part includes a rubber block, a metal sheet is fixedly connected to the bottom of the rubber block, the metal sheet contacts a circuit conduction block, and the circuit conduction block is fixedly connected to the lock hook.

[0026] Compared with the prior art, the present invention has the following advantages and technical effects:

[0027] During use, when the lock gear and the lock hook are in the engaged limit state, the telescopic block in the limit block extends out and buckles under the lock gear to prevent the elevator hall door from accidentally opening due to insufficient engagement depth caused by the door lock not being completely closed, thereby causing personal injury, etc. When the lock gear and the lock hook need to be separated, the telescopic block is slid into the limit block through the driving part to separate the lock gear from the lock hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a front view of the structure of the present invention;

[0031] Figure 3 This is the main view of the structure in the open state of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the limit block of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the limit block of the present invention;

[0034] Figure 6 It is the work flow chart of the present invention;

[0035] Among them, 1. lock gear; 2. lock gear base; 3. rubber block; 4. metal sheet; 5. circuit conduction block; 6. limit block; 7. telescopic block; 8. cable protection cover; 9. first pulley; 10. emergency door opening connecting rod; 11. limit screw; 12. first roller; 13. second roller; 14. lock hook; 15. cable; 16. second pulley; 17. third pulley; 18. wire take-up box; 19. spring; 20. spring mounting seat; 21. angle sensor; 22. pop-up spring; 23. connecting rod; 24. lock hook base. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figures 1 to 4 The present invention discloses a safety elevator floor door lock device, including a lock hook assembly and a lock gear assembly, wherein a lock hook 14 of the lock hook assembly and a lock gear 1 of the lock gear assembly are limitedly matched through a limit block 6, a telescopic block 7 is slidably connected in the limit block 6, and the telescopic block 7 is limitedly matched with the lock gear 1 after being extended;

[0039] The telescopic block 7 is transmission-connected with a driving part.

[0040] During use, when the lock gear 1 and the lock hook 14 are in an engaged limit state, the telescopic block 7 in the limit block 6 extends out and buckles under the lock gear 1 to prevent the elevator hall door from accidentally opening due to insufficient engagement depth caused by the door lock not being completely closed, thereby causing personal injury, etc. When the lock gear 1 and the lock hook 14 need to be separated, the telescopic block 7 is slid into the limit block 6 through the driving part, and the lock gear 1 is separated from the lock hook 14.

[0041] As an optional embodiment, a connecting rod 23 is fixedly connected to the end of the telescopic block 7, and a pop-up spring 22 is sleeved on the connecting rod 23. One end of the pop-up spring 22 is fixedly connected to the end of the telescopic block 7, and the other end of the pop-up spring 22 is fixedly connected to the inner wall of the limit block 6. The pop-up spring 22 is extended to make the telescopic block 7 slide out of the limit block 6, and the connecting rod 23 is slidably connected to the inner wall of the limit block 6. The end of the connecting rod 23 away from the telescopic block 7 is transmission connected to the driving part.

[0042] The driving part drives the connecting rod 23 to slide on the inner wall of the limiting block 6, so that the telescopic block 7 slides into the inside of the limiting block 6, and the pop-up spring 22 is compressed.

[0043] Furthermore, the limit block 6 is provided with a winding post, and the winding post is used to change the moving direction of the cable 15.

[0044] As an optional embodiment, the driving part includes a cable 15, one end of the cable 15 is fixedly connected to an end of the connecting rod 23 away from the telescopic block 7;

[0045] The other end of the cable 15 passes through the guide portion and is wound around the spool of the take-up box 18;

[0046] The spool is provided with a rotating part, which is used to drive the spool to rotate so as to wind the cable 15 ; the rotating part can compress the pop-up spring 22 .

[0047] The rotating part drives one end of the cable 15 to be wound around the spool of the wire take-up box 18, and the guide part ensures that the cable 15 slides smoothly. At this time, since the force of the rotating part is greater than the elastic force of the pop-up spring 22, the pop-up spring 22 can be compressed. Therefore, the connecting rod 23 can be pulled by the cable 15 to drive the telescopic block 7 to slide into the limit block 6.

[0048] As an optional embodiment, the guide portion includes a first pulley 9, a second pulley 16 and a third pulley 17;

[0049] The first pulley 9 and the second pulley 16 are rotatably disposed at both ends of the lock hook 14, respectively. The second pulley 16 is disposed close to the take-up box 18, and the first pulley 9 is disposed close to the limit block 6.

[0050] The wire take-up box 18 is rotatably connected to a third pulley 17;

[0051] One end of the cable 15 is wound around the spool of the take-up box 18 through the first pulley 9, the second pulley 16 and the third pulley 17 in sequence.

[0052] The cable 15 can be guided and moved by means of the first pulley 9 , the second pulley 16 and the third pulley 17 .

[0053] As an optional embodiment, the rotating part is preferably a motor, the fixed end of the motor is fixedly connected to the inner wall of the wire take-up box 18, the movable end of the motor is fixedly connected to the bobbin, and the motor is used to drive the bobbin to rotate.

[0054] The motor is electrically connected to a controller, which is preferably a PLC programmable controller. The controller can receive the elevator floor door opening and closing signal. When receiving the door opening signal, the motor drives the shaft to rotate to retract the cable 15, so that the telescopic block 7 slides into the limit block 6. When receiving the door closing signal, the motor reverses and gradually releases the cable 15. When the lock hook 14 engages with the lock gear 1, the telescopic block 7 is popped out under the action of the pop-up spring 22 by continuing to release the cable 15.

[0055] As an optional embodiment, the rotating part is preferably a torsion spring, one end of which is fixedly connected to the inner wall of the wire take-up box 18, and the other end of which is fixedly connected to the bobbin, and the torsion spring is used to drive the bobbin to rotate.

[0056] When the torsion force of the torsion spring is greater than the elastic force of the pop-up spring 22, the spool can rotate, making it easier to wind the cable 15 around the spool.

[0057] As an optional implementation, an angle sensor 21 is further included, which is arranged in the wire take-up box 18 and is used to detect the rotation angle of the spool.

[0058] The angle sensor 21 can detect the rotation angle of the spool, thereby monitoring the lifting state of the lock hook 14 to prevent the lock hook 14 from being in an abnormal state.

[0059] As an optional implementation, the cable 15 is wrapped with a cable protection cover 8 , the cable protection cover 8 is fixed on the locking hook 14 , and the cable 15 and the cable protection cover 8 are slidably arranged.

[0060] As an optional embodiment, the lock hook assembly includes a lock hook base 24, the lock hook 14 is rotatably arranged on the lock hook base 24, one end of the lock hook 14 away from the limit block 6 is fixedly connected to one end of the spring 19, and the other end of the spring 19 is fixedly connected to the lock hook base 24 through the spring mounting seat 20;

[0061] The lock hook 14 is fixed with a limit screw 11, and the limit screw 11 is used to prevent the lock hook 14 from rotating excessively;

[0062] An emergency door opening connecting rod 10 is fixedly connected to one end of the bottom of the lock hook 14 close to the lock gear 1;

[0063] A first roller 12 for cooperating with the elevator door opener is rotatably disposed on the top of the lock hook 14;

[0064] The second roller 13 is rotatably connected to the lock hook base 24 , and the rotation axis of the second roller 13 is coaxially arranged with the rotation axis of the lock hook 14 .

[0065] As an optional implementation, the gear lock assembly includes a gear lock base 2, the gear lock 1 is fixedly connected to the gear lock base 2, and the gear lock base 2 is provided with a detection portion for detecting whether the lock hook 14 is in place.

[0066] As an optional implementation, the detection part includes a rubber block 3 , a metal sheet 4 is fixedly connected to the bottom of the rubber block 3 , the metal sheet 4 contacts a loop conducting block 5 , and the loop conducting block 5 is fixedly connected to the lock hook 14 .

[0067] The working process of the present invention is as follows:

[0068] When the door lock is closed and in the initial state, the metal sheet 4 contacts the circuit conduction block 5, the angle sensor 21 returns to zero, and the telescopic block 7 pops up and is located below the lock gear 1. When the door needs to be opened, the first roller 12, the second roller 13 and the elevator car door opener are linked or the emergency door opening connecting rod 10 rotates, and the lock hook 14 rotates around the center point of the second roller 13. The distance between the second pulley 16 and the third pulley 17 is reduced, and the wire box 18 winds the cable 15 into the wire box. The angle sensor 21 monitors the rotation angle of the spool of the wire box 18. At the same time, the telescopic block 7 moves into the limit block 6 under the action of the cable 15. The lock hook 14 is lifted and separated from the lock gear 1, and the elevator floor door is opened. After boarding, the elevator floor door is closed. When the lock hook 14 does not contact the lock gear 1, the lock hook 14 is in a horizontal state. When the lock hook 14 contacts the lock gear 1, the lock hook 14 is lifted due to the action of the lock gear 1. At the same time, the telescopic block 7 contracts under the action of the cable 15 because the lock gear 14 is lifted. When the front end protrusion of the lock hook 14 exceeds the notch on the lock gear 1, the lock hook 14 falls down, and the telescopic block 7 extends out under the action of the pop-up spring 22. The metal sheet 4 and the circuit conduction block 5 are energized, and the angle sensor 21 detects that the axis angle of the take-up box 18 is normal. At this time, the elevator door is completely closed. The use process is completed this time.

[0069] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0070] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A safety elevator landing door lock device, comprising a lock hook assembly and a lock gear assembly, wherein the lock hook (14) of the lock hook assembly and the lock gear (1) of the lock gear assembly are limitedly matched through a limit block (6), characterized in that: A telescopic block (7) is slidably connected inside the limit block (6), and the telescopic block (7) is limitedly matched with the lock gear (1) after being extended; The telescopic block (7) is transmission-connected with a driving part.

2. A safety elevator landing door lock device according to claim 1, characterized in that: The end of the telescopic block (7) is fixedly connected with a connecting rod (23), and a pop-up spring (22) is sleeved on the connecting rod (23). One end of the pop-up spring (22) is fixedly connected to the end of the telescopic block (7), and the other end of the pop-up spring (22) is fixedly connected to the inner wall of the limit block (6). When the pop-up spring (22) is extended, the telescopic block (7) slides out of the limit block (6), and the connecting rod (23) is slidably connected to the inner wall of the limit block (6). One end of the connecting rod (23) away from the telescopic block (7) is transmission-connected to the driving unit.

3. A safety elevator landing door lock device according to claim 2, characterized in that: The driving part comprises a cable (15), one end of the cable (15) being fixedly connected to an end of the connecting rod (23) away from the telescopic block (7); The other end of the cable (15) passes through the guide portion and is wound around the spool of the wire take-up box (18); The spool is provided with a rotating part, which is used to drive the spool to rotate so as to wind the cable (15); the rotating part can compress the pop-up spring (22).

4. A safety elevator landing door lock device according to claim 3, characterized in that: The guide portion comprises a first pulley (9), a second pulley (16) and a third pulley (17); The first pulley (9) and the second pulley (16) are rotatably arranged at two ends of the lock hook (14), respectively, the second pulley (16) is arranged close to the wire take-up box (18), and the first pulley (9) is arranged close to the limit block (6); The wire take-up box (18) is rotatably connected to a third pulley (17); One end of the cable (15) is wound around the spool of the wire take-up box (18) through the first pulley (9), the second pulley (16) and the third pulley (17) in sequence.

5. A safety elevator landing door lock device according to claim 3, characterized in that: It also includes an angle sensor (21) which is arranged in the wire take-up box (18) and is used to detect the rotation angle of the wire shaft.

6. A safety elevator landing door lock device according to claim 3, characterized in that: The cable (15) is wrapped with a cable protection cover (8), the cable protection cover (8) is fixed on the locking hook (14), and the cable (15) and the cable protection cover (8) are slidably arranged.

7. A safety elevator landing door lock device according to claim 1, characterized in that: The lock hook assembly comprises a lock hook base (24), the lock hook (14) is rotatably arranged on the lock hook base (24), one end of the lock hook (14) away from the limit block (6) is fixedly connected to one end of a spring (19), and the other end of the spring (19) is fixedly connected to the lock hook base (24) via a spring mounting seat (20); A limit screw (11) is fixedly connected to the locking hook (14), and the limit screw (11) is used to prevent the locking hook (14) from rotating excessively; An emergency door opening connecting rod (10) is fixedly connected to one end of the bottom of the lock hook (14) close to the lock gear (1); The top of the lock hook (14) is rotatably provided with a first roller (12) for cooperating with an elevator door opener; The lock hook base (24) is rotatably connected to a second roller (13), and the rotation axis of the second roller (13) is coaxially arranged with the rotation axis of the lock hook (14).

8. The safety elevator landing door lock device according to claim 1, characterized in that: The lock gear assembly comprises a lock gear base (2), the lock gear (1) is fixedly connected to the lock gear base (2), and the lock gear base (2) is provided with a detection part for detecting that the lock hook (14) is in place.

9. A safety elevator landing door lock device according to claim 8, characterized in that: The detection part comprises a rubber block (3), a metal sheet (4) is fixedly connected to the bottom of the rubber block (3), the metal sheet (4) contacts a loop conduction block (5), and the loop conduction block (5) is fixedly connected to the lock hook (14).

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