Landing door electromagnetic lock for elevator

Abstract

The utility model discloses a landing door electromagnetic lock for an elevator, and relates to the technical field of elevators, the landing door electromagnetic lock for the elevator comprises a first machine box and a second machine box, both the first machine box and the second machine box are provided with fixing assemblies for installation; a first mounting cavity is formed in one side of the interior of the first machine box, a second mounting cavity is formed in the other side of the first machine box, an inner sliding block is slidably connected to the interior of the first mounting cavity, a spring bolt is fixedly connected to the side, away from the second mounting cavity, of the inner sliding block, and a sliding strip is slidably connected between the first mounting cavity and the second mounting cavity. By means of the electromagnet and the iron core, the spring bolt can be moved after an elevator reaches a designated floor, the spring bolt retracts into the first installation cavity to complete automatic unlocking, after the spring bolt retracts, the lock rod automatically retracts into the second machine box under the action of the tension spring, and then automatic unlocking is achieved; and the problem that a worker needs to manually unlock is avoided.

Description

Technical Field

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

[0002] A construction elevator is a passenger and freight elevator that can transport various construction materials and construction personnel in layers. Because the guide rails of the construction elevator are attached to the outside of the building structure, it is also called an external elevator. The construction elevator can be connected to the corresponding height of the building's construction without the need for cables. Therefore, it is an ideal vertical transportation machine in high-rise buildings. It is used in conjunction with a tower crane, generally with a load capacity of 0.3-3.6 tons and an operating speed ranging from 1-96m / min.

[0003] In the application process of construction elevators, the unlocking of floor doors mainly relies on the operation of workers inside the elevator. However, in actual application, it is found that when workers are transporting or moving materials, they need to operate the floor door lock to unlock it, which is inconvenient. Based on the above problems, we have developed an electromagnetic lock for floor doors of elevators to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic lock for a landing door of an elevator to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An electromagnetic lock for a landing door of an elevator, comprising a first machine box and a second machine box, wherein the first machine box and the second machine box are both provided with a fixing assembly for installation;

[0007] A first mounting cavity is defined on one side of the interior of the first machine box, and a second mounting cavity is defined on the other side of the first machine box. An inner slider is slidably connected to the interior of the first mounting cavity, and a lock tongue is fixedly connected to a side of the inner slider away from the second mounting cavity. A sliding bar is slidably connected between the first mounting cavity and the second mounting cavity, and the sliding bar is fixedly connected to the inner slider. A first spring is provided at both ends of the inner slider in the first mounting cavity, a lock groove is further defined on the upper end of the first machine box, and the lock tongue protrudes into the lock groove. A locking assembly for cooperating with the lock tongue for locking is provided inside the second machine box;

[0008] An electromagnetic unlocking assembly for retracting the lock tongue into the first installation cavity is provided at the upper end of the second installation cavity, and a manual unlocking assembly for manual unlocking is provided at the lower end of the second installation cavity.

[0009] As a further solution of the present invention: the fixing assembly includes a mounting plate, the mounting plate is arranged on both sides of the first machine box and the second machine box, and a plurality of mounting holes for installation are opened on the mounting plate.

[0010] As a further solution of the present invention: the locking assembly includes a locking rod, which is slidably connected to the inside of the second machine box, and the lower end of the second machine box is provided with a triangular groove that cooperates with the lock tongue. A tension spring is installed between one end of the locking rod located inside the second machine box and the inner end surface of the second machine box, and the second machine box is provided with a pushing assembly for pushing the locking rod to move.

[0011] As a further solution of the present invention: the pushing assembly includes a strip-shaped slide groove, which is opened at the upper end and the lower end of the second machine box, and a shift plate is slidably connected between the strip-shaped slide grooves, and the shift plate is fixedly connected to the locking rod.

[0012] As a further solution of the present invention: the electromagnetic unlocking component includes an iron core, which is fixedly connected to the side of the sliding bar located inside the second installation cavity close to the first installation cavity, an electromagnet is installed on the side of the upper end of the second installation cavity away from the first installation cavity, and a proximity switch is installed on the end of the lock slot away from the second machine box.

[0013] As a further solution of the present invention: a bottom groove is provided at the bottom of the sliding bar, and a rack is provided inside the bottom groove.

[0014] As a further solution of the present invention: the manual unlocking assembly includes a rotating shaft, which is rotatably connected to one side of the second mounting cavity. A gear is provided on the rotating shaft, which is engaged with the rack, and handles are fixedly connected to both ends of the rotating shaft.

[0015] As a further solution of the present invention: a plurality of evenly distributed grooves are provided on the edge of the handle.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model uses the electromagnet and iron core to move the lock tongue after the elevator reaches the designated floor, so that the lock tongue is retracted into the first installation cavity to complete automatic unlocking. After the lock tongue is retracted, the lock rod automatically retracts into the second machine box under the action of the tension spring, thereby realizing automatic unlocking and avoiding the problem of workers having to manually unlock.

[0018] 2. The utility model is provided with two handles, which can be used for manual unlocking inside the elevator and manual unlocking outside the elevator when in use, so that after the elevator fails, workers can still unlock the door normally from outside or inside the elevator, thereby effectively avoiding the problem of being unable to open the door due to elevator failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the first machine box of the utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the second machine box of the present utility model.

[0022] Figure 4 This is a structural diagram of the other side of the first machine box of the present invention.

[0023] Figure 5 It is a schematic diagram of the local structure of the utility model.

[0024] Among them: 1. First machine box; 2. Second machine box; 3. Lock tongue; 4. Paddle; 5. Mounting hole; 6. Mounting plate; 7. Handle; 8. Inner slider; 9. First mounting cavity; 10. Iron core; 11. Electromagnet; 12. Sliding bar; 13. Gear; 14. Rotating shaft; 15. Second mounting cavity; 16. First spring; 17. Lock rod; 18. Strip slide; 19. Tension spring; 20. Lock slot; 21. Triangular slot; 22. Proximity switch; 121. Bottom slot; 122. Rack. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] Example 1:

[0027] See also Figure 1-Figure 5 In an embodiment of the utility model, an electromagnetic lock for a landing door of an elevator includes a first machine box 1 and a second machine box 2, and the first machine box 1 and the second machine box 2 are both provided with a fixing component for installation; the fixing component includes a mounting plate 6, and the mounting plate 6 is arranged on both sides of the first machine box 1 and the second machine box 2, and a plurality of mounting holes 5 for installation are opened on the mounting plate 6; the provided mounting holes 5 and the mounting plate 6 can be used to install or fix the first machine box 1 and the second machine box 2.

[0028] A first mounting cavity 9 is provided on one side of the interior of the first machine box 1, and a second mounting cavity 15 is provided on the other side of the first machine box 1. An inner slider 8 is slidably connected to the interior of the first mounting cavity 9, and a lock tongue 3 is fixedly connected to the side of the inner slider 8 away from the second mounting cavity 15. A sliding bar 12 is slidably connected between the first mounting cavity 9 and the second mounting cavity 15, and the sliding bar 12 is fixedly connected to the inner slider 8. A first spring 16 is provided at both ends of the inner slider 8 in the interior of the first mounting cavity 9, and a lock groove 20 is further provided at the upper end of the first machine box 1. The lock tongue 3 protrudes into the lock groove 20, and a locking component for cooperating with the lock tongue 3 for locking is provided inside the second machine box 2; an electromagnetic decompression device is provided at the upper end of the second mounting cavity 15 for retracting the lock tongue 3 into the first mounting cavity 9. The lock assembly, the electromagnetic unlocking assembly includes an iron core 10, the iron core 10 is fixedly connected to the sliding bar 12 located on the side of the second mounting cavity 15 close to the first mounting cavity 9, the upper end of the second mounting cavity 15 is installed with an electromagnet 11 on the side away from the first mounting cavity 9, and the lock slot 20 is installed with a proximity switch 22 on the end away from the second machine box 2. During operation, the proximity switch 22 and the electromagnet 11 are electrically connected to the elevator control system and linked with the elevator control system. When the elevator reaches the designated floor, the electromagnet 11 is energized to attract the iron core 10, so that the lock tongue 3 is retracted into the first mounting cavity 9 to complete the unlocking. When the floor door is opened, the proximity switch 22 feedbacks a signal and then the electromagnet 11 loses power, and the lock tongue 3 is reset under the action of the first spring 16.

[0029] The locking assembly includes a locking rod 17, which is slidably connected to the inside of the second machine box 2. The lower end of the second machine box 2 is provided with a triangular groove 21 that cooperates with the lock tongue 3. A tension spring 19 is installed between one end of the locking rod 17 located inside the second machine box 2 and the inner end surface of the second machine box 2. The second machine box 2 is provided with a pushing assembly for pushing the locking rod 17 to move; the pushing assembly includes a strip slide 18, which is opened at the upper and lower ends of the second machine box 2, and a dial plate 4 is slidably connected between the strip slide 18, and the dial plate 4 is fixedly connected to the locking rod 17; when the floor door is closed, the sliding dial plate 4 causes the locking rod 17 to be inserted into the lock groove 20, and then the lock tongue 3 will retract into the first mounting cavity 9 under the action of the inclined surface, and then after the triangular groove 21 reaches the position, the lock tongue 3 is extended under the action of the first spring 16 to lock the floor door.

[0030] The lower end of the second mounting cavity 15 is provided with a manual unlocking assembly for manual unlocking; the bottom of the sliding bar 12 is provided with a bottom groove 121, and a rack 122 is provided inside the bottom groove 121; the manual unlocking assembly includes a rotating shaft 14, which is rotatably connected to one side of the second mounting cavity 15, and a gear 13 is provided on the rotating shaft 14, which meshes with the rack 122, and both ends of the rotating shaft 14 are fixedly connected to a handle 7; when the elevator fails and needs to be unlocked inside the elevator car, the worker can drive the rotating shaft 14 to rotate by rotating the handle 7, and the rotating shaft 14 rotates to drive the gear 13, and the gear 13 cooperates with the rack 122 to move the lock tongue 3 toward the inside of the first mounting cavity 9, thereby realizing manual unlocking. When in use, one end of the rotating shaft 14 passes through the floor door, and the handle 7 is installed on the passed end, so that in actual use, both manual unlocking inside the machine and manual unlocking outside the machine can be realized.

[0031] Example 2:

[0032] The difference from Example 1 is that a plurality of evenly distributed grooves are provided on the edge of the handle 7 , and the provided grooves can prevent the handle 7 from slipping when it is rotated.

[0033] When the elevator car reaches the designated floor, the electromagnet 11 is energized to attract the iron core 10, so that the lock tongue 3 is retracted into the first installation cavity 9 to complete the unlocking. When the floor door is opened, the proximity switch 22 feedbacks a signal and the electromagnet 11 is de-energized. The lock tongue 3 is reset under the action of the first spring 16. When the floor door is closed, the sliding plate 4 causes the locking rod 17 to be inserted into the lock groove 20. Then, the lock tongue 3 is retracted into the first installation cavity 9 under the action of the inclined surface. Then, after the triangular groove 21 reaches the position, the lock tongue 3 is extended under the action of the first spring 16 to lock the floor door. By providing a manual unlocking component, manual unlocking inside and outside the machine can be performed during use, so that after the elevator fails, workers can still unlock the door normally from outside or inside the machine.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification describes the embodiments, not every embodiment contains only one technical solution. This description is only for the sake of clarity. Those skilled in the art should read the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electromagnetic lock for a landing door of an elevator, comprising a first machine box (1) and a second machine box (2), wherein both the first machine box (1) and the second machine box (2) are provided with a fixing assembly for installation; Its characteristics are: A first installation cavity (9) is provided on one side of the interior of the first machine box (1), and a second installation cavity (15) is provided on the other side of the first machine box (1). An inner slider (8) is slidably connected to the interior of the first installation cavity (9), and a lock tongue (3) is fixedly connected to the side of the inner slider (8) away from the second installation cavity (15). A sliding bar (12) is slidably connected between the first installation cavity (9) and the second installation cavity (15), and the sliding bar (12) is fixedly connected to the inner slider (8). First springs (16) are provided at both ends of the inner slider (8) in the interior of the first installation cavity (9). A lock groove (20) is also provided at the upper end of the first machine box (1), and the lock tongue (3) protrudes into the lock groove (20). A locking component for cooperating with the lock tongue (3) for locking is provided in the interior of the second machine box (2); An electromagnetic unlocking assembly for retracting the lock tongue (3) into the first installation cavity (9) is provided at the upper end of the second installation cavity (15), and a manual unlocking assembly for manual unlocking is provided at the lower end of the second installation cavity (15).

2. The electromagnetic lock for a landing door of an elevator according to claim 1, characterized in that: The fixing assembly comprises a mounting plate (6), the mounting plate (6) being arranged at both sides of the first machine box (1) and the second machine box (2), and the mounting plate (6) being provided with a plurality of mounting holes (5) for mounting.

3. The electromagnetic lock for a landing door of an elevator according to claim 1, characterized in that: The locking assembly comprises a locking rod (17), the locking rod (17) being slidably connected to the interior of the second machine box (2), a triangular groove (21) cooperating with the lock tongue (3) being provided at the lower end of the second machine box (2), a tension spring (19) being installed between one end of the locking rod (17) located inside the second machine box (2) and the inner end surface of the second machine box (2), and a pushing assembly for pushing the locking rod (17) to move is provided on the second machine box (2).

4. The electromagnetic lock for a landing door of an elevator according to claim 3, characterized in that: The push assembly includes a strip-shaped slide groove (18), which is opened at the upper end and the lower end of the second machine box (2). A shift plate (4) is slidably connected between the strip-shaped slide grooves (18), and the shift plate (4) is fixedly connected to the locking rod (17).

5. The electromagnetic lock for a landing door of an elevator according to claim 1, characterized in that: The electromagnetic unlocking assembly includes an iron core (10), the iron core (10) being fixedly connected to a sliding bar (12) located inside the second mounting cavity (15) on a side close to the first mounting cavity (9), an electromagnet (11) being installed on a side of the upper end of the second mounting cavity (15) away from the first mounting cavity (9), and a proximity switch (22) being installed on an end of the lock slot (20) away from the second machine box (2).

6. The electromagnetic lock for a landing door of an elevator according to claim 1, characterized in that: A bottom groove (121) is provided at the bottom of the sliding bar (12), and a rack (122) is provided inside the bottom groove (121).

7. The electromagnetic lock for a landing door of an elevator according to claim 6, characterized in that: The manual unlocking assembly includes a rotating shaft (14), which is rotatably connected to one side of the second mounting cavity (15), and a gear (13) is provided on the rotating shaft (14), which is engaged with a rack (122), and both ends of the rotating shaft (14) are fixedly connected to handles (7).

8. The electromagnetic lock for a landing door of an elevator according to claim 7, characterized in that: The edge of the handle (7) is provided with a plurality of evenly distributed grooves.

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