Landing door self-closing protection device

Abstract

The utility model discloses a landing door self-closing protection device, which belongs to the relevant technical field of car elevators, and comprises symmetrically arranged landing door bodies, the mutually corresponding side walls of the symmetrically arranged landing door bodies are longitudinally provided with assembly grooves, the inner sides of the assembly grooves are respectively provided with electromagnets and magnetic blocks, and the electromagnets and the magnetic blocks are arranged on the inner sides of the assembly grooves. A distance measuring sensor and a proximity sensor are installed at the two ends of the electromagnet respectively, buffering assemblies are installed at the two ends of the magnetic block, and the same-direction magnetic poles between the electromagnet and the magnetic block correspond to each other, so that the landing door bodies are prevented from colliding with each other under the action of magnetic repulsive force; therefore, the landing door body can be effectively prevented from being damaged due to strong impact, impact force is buffered again when the landing door body is finally closed through the buffering assembly, and the protection effect of the landing door body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car elevator, more particularly to a landing door self-closing protection device. BACKGROUND

[0002] The landing door self-closing device is a crucial component of the elevator safety system, which can automatically close the landing door when the elevator is not at the floor, ensuring the safety of passengers. There are mainly three common landing door self-closing devices on the market, namely hydraulic landing door self-closing device, mechanical landing door self-closing device, and electromagnetic landing door self-closing device.

[0003] The mechanical landing door self-closing device realizes the automatic closing of the door leaf through mechanical force. When the elevator landing door is opened, the mechanical action such as spring force or weight hammer force will quickly close the door leaf. The longer the travel of the landing door, the greater the impact force. After multiple impacts, the related components of the landing door may be damaged, and even the situation of accidentally injuring maintenance personnel may occur. Therefore, we propose a landing door self-closing protection device to solve the above problems. SUMMARY

[0004] 1. Technical problem to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a landing door self-closing protection device. It utilizes the mutual correspondence of the same polarity between the electromagnet and the magnetic block, thus avoiding mutual impact of the landing door body under the action of magnetic repulsion force, effectively preventing damage to the landing door body due to strong impact, and buffering the impact force again when the landing door body is finally closed through the buffer assembly, improving the protection effect of the landing door body.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solution.

[0008] A landing door self-closing protection device, comprising symmetrically arranged landing door bodies, the side walls of the symmetrically arranged landing door bodies corresponding to each other are longitudinally provided with assembly grooves, and the inner sides of the assembly grooves are respectively provided with electromagnets and magnetic blocks;

[0009] The two ends of the electromagnet are respectively provided with a distance measuring sensor and a proximity sensor;

[0010] The two ends of the magnetic block are respectively provided with a buffer assembly;

[0011] The buffer assembly comprises a sleeve fixedly connected to the inner side of the assembly groove, an extension rod movably connected to the sleeve, a damping rubber head mounted at the end of the extension rod, and a spring mounted at the inner side of the sleeve;

[0012] The outer surface of the layer door body provided with the electromagnet is provided with a receiving cavity, and the inner side of the receiving cavity is provided with a control host and a storage battery.

[0013] Further, the same direction magnetic poles between the electromagnet and the magnetic block correspond to each other.

[0014] Further, the end of the telescopic rod away from the damping rubber head is provided with a baffle, and the port part of the sleeve is provided with a limiting protrusion abutting against the baffle.

[0015] One end of the spring is connected with the baffle, and the other end of the spring is connected with the inner end wall of the sleeve.

[0016] Further, the edge part of the assembly groove is inlaid with a buffer rubber strip, and the buffer rubber strip is arranged around the assembly groove.

[0017] Further, the port part of the receiving cavity is hinged with a protection door, and the protection door is provided with a heat dissipation hole.

[0018] Further, the output end of the storage battery is electrically connected with the input end of the control host and the electromagnet respectively, and a closing switch controlled by the control host is arranged on the circuit connecting the storage battery and the electromagnet.

[0019] The output end of the distance measuring sensor and the proximity sensor is electrically connected with the input end of the control host.

[0020] Further, one side of the receiving cavity is provided with a wiring slot in communication with the assembly groove, and the wiring slot is provided with a decorative plate.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] (1) In the process of closing the layer door body, the distance measuring sensor is used to measure the distance between the layer door bodies, when the layer door bodies approach to be closed, the distance measuring sensor transmits a signal to the control host, the circuit between the storage battery and the electromagnet is closed through the control host, the electromagnet is electrified to generate magnetism, because the same direction magnetic poles between the electromagnet and the magnetic block correspond to each other, under the action of magnetic repulsion force, the layer door bodies are prevented from colliding with each other, so that the layer door bodies can be effectively prevented from being damaged due to strong impact.

[0024] (2) the scheme, through the proximity sensor identifies the interval between the layer door body, after the layer door body approaches to close, the proximity sensor transmits signal to the control host, the control host controls the circuit between the battery and the electromagnet to be disconnected, so that the electromagnet is powered off and the magnetism disappears, so that the layer door body is completely closed, at the same time, the damping rubber head arranged at the end of the telescopic rod is abutted with the corresponding layer door body, and the spring inside the sleeve is used for buffering, the impact force is buffered again in the process that the layer door body is completely closed, and the protection effect of the layer door body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 it is the three-dimensional structure schematic diagram of the utility model;

[0026] Figure 2 it is the electromagnet structure schematic diagram of the utility model;

[0027] Figure 3 it is the magnetic block structure schematic diagram of the utility model;

[0028] Figure 4 it is the enlarged schematic diagram of part A of the utility model;

[0029] Figure 5 it is the axial section view schematic diagram of the buffer assembly of the utility model;

[0030] Figure 6 it is the storage cavity structure schematic diagram of the utility model.

[0031] Mark explanation in drawing:

[0032] 1, layer door body;2, assembly groove;3, electromagnet;4, magnetic block;5, distance measuring sensor;6, sleeve;7, telescopic rod;8, damping rubber head;9, spring;10, buffer rubber strip;11, proximity sensor;12, storage cavity;13, control host;14, battery;15, protective door;16, heat dissipation hole;17, wiring slot;18, decorative plate. DETAILED DESCRIPTION

[0033] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model;Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0034] Embodiment:

[0035] Please refer to Figures 1-6The application relates to a layer door self-closing protection device which comprises symmetrically arranged layer door bodies 1, the symmetrically arranged layer door bodies 1 are provided with assembly grooves 2 in the corresponding side walls in a longitudinal direction, and electromagnetic iron 3 and magnetic blocks 4 are respectively arranged on the inner sides of the assembly grooves 2;

[0036] The two ends of the electromagnetic iron 3 are respectively provided with a distance measuring sensor 5 and a proximity sensor 11;

[0037] The two ends of the magnetic blocks 4 are respectively provided with buffer assemblies;

[0038] The buffer assembly comprises a sleeve 6 fixedly connected to the inner side of the assembly groove 2, a telescopic rod 7 movably connected to the sleeve 6, a damping rubber head 8 arranged at the end of the telescopic rod 7 and a spring 9 arranged on the inner side of the sleeve 6;

[0039] The outer surface of the layer door body 1 provided with the electromagnetic iron 3 is provided with a receiving cavity 12, and a control host 13 and a storage battery 14 are respectively arranged on the inner side of the receiving cavity 12;

[0040] It is to be explained that the layer door body 1 is automatically closed through mechanical force, the distance measuring sensor 5 is used to measure the distance between the layer door bodies 1 during the closing process of the layer door body 1, the distance measuring sensor 5 transmits a signal to the control host 13 when the layer door bodies 1 are close to being closed, the control host 13 controls the circuit between the storage battery 14 and the electromagnetic iron 3 to be closed, the electromagnetic iron 3 is electrified to generate magnetism, the same direction magnetic poles of the electromagnetic iron 3 and the magnetic blocks 4 correspond to each other, and therefore the layer door bodies 1 are prevented from colliding with each other under the action of magnetic repulsion force, so that the layer door bodies 1 can be effectively prevented from being damaged due to strong impact;

[0041] The proximity sensor 11 is used to identify the distance between the layer door bodies 1, the proximity sensor 11 transmits a signal to the control host 13 after the layer door bodies 1 are close to being closed, the control host 13 controls the circuit between the storage battery 14 and the electromagnetic iron 3 to be disconnected, the electromagnetic iron 3 is de-energized to make the magnetism disappear, the layer door bodies 1 are completely closed, the damping rubber head 8 arranged at the end of the telescopic rod 7 abuts against the corresponding layer door body 1, and the spring 9 arranged on the inner side of the sleeve 6 is used for buffering, the impact force is buffered again during the completely closing process of the layer door bodies 1, and the protection effect of the layer door bodies 1 is improved.

[0042] As shown in Figure 2 , Figure 3 The same direction magnetic poles of the electromagnetic iron 3 and the magnetic blocks 4 correspond to each other;

[0043] It is to be explained that the same direction magnetic poles of the electromagnetic iron 3 and the magnetic blocks 4 correspond to each other, and therefore the layer door bodies 1 are prevented from colliding with each other under the action of magnetic repulsion force.

[0044] As shown in Figure 5As shown, the end of the telescopic rod 7 away from the damping rubber head 8 is provided with a baffle, and the port part of the sleeve 6 is provided with a limiting protrusion abutting against the baffle;

[0045] One end of the spring 9 is connected with the baffle, and the other end of the spring 9 is connected with the inner end wall of the sleeve 6;

[0046] It should be noted that the baffle abuts against the limiting protrusion under the elastic force of the spring 9, which limits the telescopic rod 7 and avoids the telescopic rod 7 from separating from the sleeve 6.

[0047] As shown in Figure 2 , Figure 3 , the edge part of the assembly groove 2 is inlaid with a buffer rubber strip 10, and the buffer rubber strip 10 is arranged around the assembly groove 2;

[0048] It should be noted that after the layer door body 1 is completely closed, the buffer rubber strip 10 can effectively isolate vibration and absorb impact force.

[0049] As shown in Figure 1 , the port part of the receiving cavity 12 is hinged with a protective door 15, and the protective door 15 is provided with a heat dissipation hole 16;

[0050] It should be noted that the heat dissipation hole 16 provided on the protective door 15 is conducive to controlling the heat generated during the working process of the host computer 13 and the battery 14.

[0051] The output end of the battery 14 is electrically connected with the input end of the control host computer 13 and the electromagnet 3, and a closing switch controlled by the control host computer 13 is installed on the line connected with the electromagnet 3;

[0052] The output end of the distance sensor 5 and the proximity sensor 11 is electrically connected with the input end of the control host computer 13;

[0053] It should be noted that the model of the distance sensor 5 can be selected as SW-LDS20DA / DB, and the model of the proximity sensor 11 can be selected as LJ12A3-4-Z / BX.

[0054] As shown in Figure 1 , Figure 6 , one side of the receiving cavity 12 is provided with a wiring slot 17 connected with the assembly groove 2 in a lead-through manner, and the wiring slot 17 is provided with a decorative plate 18;

[0055] It should be noted that the wiring slot 17 is convenient for wiring between components, and the assembly plate 18 covers the wiring slot 17 to play a decorative role.

[0056] In use: in the process of closing the layer door body 1, the distance between the layer door body 1 is measured by the ranging sensor 5, when the layer door body 1 approaches to close, the ranging sensor 5 transmits signals to the control host 13, the circuit between the battery 14 and the electromagnet 3 is closed by the control host 13, the electromagnet 3 is powered to generate magnetism, because the same direction magnetic pole between the electromagnet 3 and the magnetic block 4 correspond to each other, so under the action of magnetic repulsion force, the layer door body 1 is avoided from colliding each other, so that the layer door body 1 can be effectively prevented from being damaged due to strong impact;

[0057] The distance between the layer door body 1 is identified by the proximity sensor 11, after the layer door body 1 approaches to close, the proximity sensor 11 transmits signals to the control host 13, the circuit between the battery 14 and the electromagnet 3 is disconnected by the control host 13, the electromagnet 3 is powered off and the magnetism disappears, so that the layer door body 1 is completely closed, at the same time, the damping rubber head 8 arranged at the end of the telescopic rod 7 abuts against the corresponding layer door body 1, and the spring 9 inside the sleeve 6 is used for buffering, the impact force is buffered again in the process of completely closing the layer door body 1.

[0058] The above describes only the preferred specific implementation of the present application; but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, should be covered in the protection scope of the present application, which is equivalent to the replacement or change within the technical range disclosed by the present application.

Claims

1. A landing door self-closing protection device comprising landing door bodies (1) arranged symmetrically, characterized in that: The side walls of the layer door body (1) corresponding to each other are longitudinally provided with assembling grooves (2), and the inner sides of the assembling grooves (2) are respectively provided with electromagnets (3) and magnetic blocks (4); The two ends of the electromagnet (3) are respectively provided with distance sensors (5) and proximity sensors (11); The two ends of the magnetic block (4) are respectively provided with buffer assemblies; The buffer assembly comprises a sleeve (6) fixedly connected to the inner side of the assembling groove (2), a telescopic rod (7) movably connected to the sleeve (6), a damping rubber head (8) mounted at the end of the telescopic rod (7), and a spring (9) mounted at the inner side of the sleeve (6); The outer surface of the layer door body (1) provided with the electromagnet (3) is provided with a receiving cavity (12), and the inner side of the receiving cavity (12) is respectively provided with a control host (13) and a storage battery (14).

2. The self-closing protection device for a layer door according to claim 1, characterized in that: The same poles of the electromagnet (3) and the magnetic block (4) correspond to each other.

3. The self-closing door protection device of claim 1, wherein: The end of the telescopic rod (7) away from the damping rubber head (8) is provided with a baffle, and the port of the sleeve (6) is provided with a limiting protrusion abutting against the baffle; One end of the spring (9) is connected to the baffle, and the other end of the spring (9) is connected to the inner end wall of the sleeve (6).

4. The door self-closing protection device according to claim 1, characterized in that: The edge of the assembling groove (2) is inlaid with a buffer rubber strip (10), and the buffer rubber strip (10) is arranged around the assembling groove (2).

5. The self-closing door protection device of claim 1, wherein: The port of the receiving cavity (12) is hingedly provided with a protective door (15), and the protective door (15) is provided with a heat dissipation hole (16).

6. The self-closing door protection device of claim 1, wherein: The output end of the storage battery (14) is electrically connected to the input end of the control host (13) and the electromagnet (3), and a closed switch controlled by the control host (13) is mounted on the line connecting the storage battery (14) and the electromagnet (3); The output ends of the distance sensor (5) and the proximity sensor (11) are electrically connected to the input end of the control host (13).

7. The door self-closing protection device of claim 1, wherein: One side of the receiving cavity (12) is provided with a wiring groove (17) connected to the assembling groove (2), and the wiring groove (17) is provided with a decorative plate (18).

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