Elevator door door stop device

Abstract

The application belongs to the technical field of elevator door stop, and discloses an elevator door stop device, which comprises a wall body and a ground, a floor door frame is fixedly connected to the wall body, the bottom of the floor door frame is fixedly connected to the ground, a pair of hall doors are slidably connected to the rear side of the floor door frame, and a pair of car doors are arranged in parallel behind the hall doors. The cooperation of the baffle and the cross rod and other structures can greatly avoid the occurrence of the elevator door clamping objects. During the closing process of the elevator door, if people place an object on the baffle and lean against the lower end of the car door and the hall door, the baffle is moved through the cross rod linkage component, so that the center of gravity of the object is changed, thereby achieving the effect of automatically moving away the object. If the center of gravity of the object is relatively high, it is more likely to fall into the car. If the center of gravity of the object is relatively low, it is more likely to be taken out by the baffle. Even if the baffle cannot completely take out the object, the object with the deviated center of gravity can be squeezed out when the car door and the hall door are closed, thereby avoiding the elevator failure.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of elevator door stops, and particularly relates to an elevator door stop device. BACKGROUND

[0002] As an elevator safety protection device, the elevator door stop is mainly arranged in the gap region between the car door and the landing door, and its functions include multiple roles such as anti-pinch protection, foreign matter blocking and safety warning. According to the structural feature difference, the current mainstream door stop can be divided into three types of mechanical type, electronic type and composite type, among which the foot door stop is a typical representative of the mechanical door stop. The vertical gap between the car sill and the landing ground is physically blocked by a rigid member, effectively preventing the risk of small objects falling. However, the existing foot door stop generally adopts an overlapping installation scheme, that is, it is directly fixed between the car and the landing sill through simple mechanical overlapping. This traditional installation method has the following defects. First, the operation convenience is insufficient, and the door stop needs to be manually taken out and put in every time the elevator operates, resulting in low operation and maintenance efficiency. Second, the structural reliability has hidden dangers. Under the long-term load action, stress concentration phenomenon is easy to occur at the overlapping part, which further causes structural fatigue fracture, and seriously affects the service life of the equipment.

[0003] In the prior art, although a light curtain protection system is installed at the elevator door gap, a "light curtain" is formed by densely arranged infrared rays, covering the door gap region, and any object touching the light curtain triggers the door opening action. However, the light curtain is easy to be disturbed by dust, water vapor and strong light, resulting in misjudgment or failure, and the problem of sensing blind area occurs. When the object is located in the blind area, the elevator door will still be closed, and when the elevator door is opened for a long time, a forced door closing instruction is usually triggered. If at this time the elevator door bottom is intentionally or unintentionally placed with an obstacle by people, it is likely to cause a fault. In the logistics transportation and daily use, people often lean the goods or temporary tools against the elevator door to maintain the open state of the door. This behavior hides a major safety hazard. When the operator leaves the scene but does not timely remove the obstruction, the elevator door may be forced to close due to the sensing system blind area, and the object is clamped. Light, it can cause door deformation, light curtain failure, heavy, it can cause car blocking, speed limiter abnormal start and other mechanical failures. More dangerously, if the obstruction suddenly slips, the elevator may run in the state of clamping foreign matter, resulting in landing door locking device failure, elevator shaft falling and other extreme cases. SUMMARY

[0004] To solve the problem of clamping objects caused by the forced closure of the elevator door due to the sensing system blind area in the background art, the application provides an elevator door stop device.

[0005] In order to achieve the above object, the present application provides the following technical scheme: an elevator door door stop device, comprising a wall body and a ground, the wall body is fixedly connected with a floor door frame, the bottom of the floor door frame is fixedly connected on the ground, the rear side of the floor door frame is slidingly connected with a pair of hall doors, the rear of the hall door is parallelly provided with a pair of car doors, a pair of the car doors are slidingly connected with a car, and the device further comprises:

[0006] a safety protection mechanism located in front of the floor door frame;

[0007] a movable door stop mechanism arranged at the lower end of the floor door frame;

[0008] wherein the movable door stop mechanism comprises a baffle slidingly connected in the cavity of the lower end of the floor door frame, the upper end of the baffle is arc-shaped, and the side close to the car is gradually narrowed, at least one pair of rotating plates are rotationally connected in the cavity close to the car of the baffle, the middle part of the rotating plate is slidingly connected with a limiting sleeve through a limiting groove, a first magnet is fixedly connected in the cavity of the limiting sleeve, at least one pair of clamping grooves are arranged at the lower end of the car, and a second magnet is fixedly connected in each clamping groove, and the first magnet and the second magnet are attracted by magnetic force.

[0009] Preferably, the safety protection mechanism comprises a pair of protective covers symmetrically fixed to the lower end of the floor door frame, a handrail is fixedly connected to the top of each of the pair of protective covers, and the upper end of each of the pair of handrails is fixedly connected to the outer wall of the floor door frame.

[0010] Preferably, a bevel plate is fixedly connected to the top edge of each of the pair of protective covers, the end of the bevel plate extends to the cavity of the floor door frame, and a mounting clamping groove is symmetrically arranged at the lower end of the floor door frame.

[0011] Preferably, a second adhesive tape is vertically clamped to the top of the bevel plate through a clamping block, a pair of arc plates are symmetrically fixed to the bottom of the second adhesive tape, and a first adhesive tape is vertically clamped to the top of the second adhesive tape through a clamping block.

[0012] Preferably, the movable door stop mechanism further comprises a cross rod fixedly connected to the lower end of the hall door, a pair of recesses are arranged on the side close to the hall door of the floor door frame, and the cross rod is slidingly connected in the recess.

[0013] Preferably, a gear rack is fixedly connected to the side close to each other of the pair of cross rods, a gear is engaged with the lower end of each of the pair of gear racks, and a threaded rod is fixedly connected to the side away from the hall door of each of the pair of gears.

[0014] Preferably, the pair of threaded rods are rotationally penetrated through the lower end of the floor door frame and extend to the inside of the protective cover.

[0015] Preferably, the outer wall of the threaded rod is threadedly connected with a sliding block, and the mutually close sides of the pair of sliding blocks are fixedly connected with the baffle.

[0016] Preferably, the floor door frame and the bottom of the protective cover are fixedly connected with the ground through the bottom plate, and the bottom of the baffle is slidingly connected with the top of the bottom plate.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] The application can greatly avoid the situation of elevator door clamping objects by setting the baffle and the cross rod and the like. During the closing process of the elevator door, if an object is placed on the baffle and leans against the lower end of the car door and the hall door, the baffle is moved through the cross rod linkage component, so that the center of gravity of the object is changed, thereby achieving the effect of automatically moving away the object. If the center of gravity of the object is relatively high, it is more likely to fall into the car. If the center of gravity of the object is relatively low, it is more likely to be taken out by the baffle. Even if the baffle cannot completely take out the object, the object with the offset center of gravity can be squeezed out when the car door and the hall door are closed, thereby avoiding the forced closing of the elevator and causing a fault.

[0019] The application can further improve the durability of the baffle by setting the rotating plate and the limiting sleeve and the like. When the elevator door is open, the side of the baffle away from the sliding block is lapped to the surface of the inner cavity of the car, and the side wall of the rotating plate in the vertical state is attached to the car. At this time, the first magnet and the second magnet in the rotating plate are magnetically attracted to each other. The first magnet slides out of the rotating plate through the limiting sleeve and is clamped into the clamping groove of the car, forming a locking effect. When passengers get on and off the elevator, the baffle is not easy to deviate, and the longitudinal load of the lapped position of the baffle is appropriately improved, which is conducive to improving the durability.

[0020] The application facilitates the safety of riding the elevator and prolongs the maintenance time of the device by setting the handrail, the first adhesive tape and the second adhesive tape and the like. If someone rushes to catch the elevator and steps on the moving baffle, the handrail can be grabbed to maintain body balance and avoid accidental falling. According to the elevator use scene, the first adhesive tape and the second adhesive tape can be spliced to prolong the length of the dust-proof strip in cities with more dust, and the side dust is shielded by the arc plate to improve the dust-proof effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the elevator open door state of the application;

[0022] Figure 2 It is a structure schematic view of the elevator closed door state of the application;

[0023] Figure 3 It is a structure schematic view of the elevator open door state of the application; Figure 2 ​

[0024] Figure 4 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0025] Figure 5 The schematic diagram of the structure cooperation of the baffle and the bottom plate of the present application is shown in the figure.

[0026] Figure 6 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure. Figure 5 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0027] Figure 7 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0028] Figure 8 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0029] Figure 9 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0030] Figure 10 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure. Figure 9 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0031] Figure 11 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0032] Figure 12 The schematic diagram of the structure cooperation of the baffle and the anti-skid strip of the present application is shown in the figure.

[0033] In the figure:

[0034] 1, car; 2, wall; 3, ground; 4, floor door frame; 5, car door; 6, hall door; 7, safety protection mechanism; 71, protection cover; 72, handrail; 73, circular arc plate; 74, second adhesive strip; 75, first adhesive strip; 76, clamping block; 77, inclined plane plate; 8, moving door stop mechanism; 81, baffle; 82, horizontal rod; 83, anti-skid strip; 84, bottom plate; 85, rack; 86, gear; 87, threaded rod; 88, sliding block; 89, rotating plate; 810, limiting sleeve; 811, second magnet; 812, first magnet. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] As Figures 1 to 12As shown, the present application provides an elevator door stop device, including a wall 2 and a ground 3, the wall 2 is fixedly connected with a floor door frame 4, the bottom of the floor door frame 4 is fixedly connected on the ground 3, the rear side of the floor door frame 4 is slidingly connected with a pair of hall doors 6, the rear of the hall door 6 is parallelly provided with a pair of car doors 5, the pair of car doors 5 are commonly slidingly connected with a car 1, and further comprising:

[0037] A safety protection mechanism 7 is located in front of the floor door frame 4;

[0038] A moving door stop mechanism 8 is arranged at the lower end of the floor door frame 4;

[0039] The moving door stop mechanism 8 includes a baffle 81 slidingly connected in the inner cavity of the lower end of the floor door frame 4, the upper end of the baffle 81 is arc-shaped, and the side close to the car 1 is gradually narrowed, at least a pair of rotating plates 89 are rotationally connected in the inner cavity of the baffle 81 close to the car 1, a limiting sleeve 810 is slidingly connected in the middle part of the rotating plate 89 through a limiting slot, a first magnet 812 is fixedly connected in the inner cavity of the limiting sleeve 810, at least a pair of clamping grooves are arranged at the lower end of the car 1, and a second magnet 811 is fixedly connected in each clamping groove, and the first magnet 812 and the second magnet 811 are attracted by magnetic force.

[0040] The above scheme is adopted: the material of the baffle 81 is selected from 304 stainless steel, which belongs to austenitic stainless steel and usually has no magnetism in the annealing state, so the first magnet 812 will not be attracted, and the rotating plate 89 is rotated to be vertical after sliding out of the range of the bottom plate 84. The 304 stainless steel of the baffle 81 contains 18% chromium and 8% nickel, and a dense chromium oxide film is formed on the surface, which can resist humid corrosion, has high toughness and good plasticity, can withstand the pressure of stepping and is not easy to deform. The elevator door stop structure realizes safe support through the magnetic attraction locking and gravity dispersion double mechanisms. When the baffle 81 is overlapped in the gap between the car 1 and the floor door frame 4, the built-in first magnet 812 and the second magnet 811 on the side of the car generate a transverse magnetic attraction force, driving the limiting sleeve 810 to slide out along the linear guide rail inside the rotating plate 89. The clamping structure and the car clamping groove form mechanical interlocking, and cooperate with the magnetic attraction pre-tightening force to constitute double anti-falling protection. At this time, the baffle main body transmits the stepping load to the side wall of the car through the rotating plate 89, which can effectively disperse the stress, and the load bearing capacity is improved by more than 300% compared with the traditional single-sided support structure. Compared with the conventional footboard, the service life is prolonged by 5 times, the risk of elevator downtime caused by baffle deformation is significantly reduced, and the balance between safety and economy is realized.

[0041] As shown in the drawings, Figure 6 and Figure 7As shown, the safety protection mechanism 7 includes a protective cover 71 symmetrically fixed to the lower end of the floor door frame 4, a pair of protective covers 71 are fixed with handrails 72 on the top, and the upper ends of the pair of handrails 72 are fixed to the outer wall of the floor door frame 4; the top edge of the protective cover 71 is fixed with an inclined panel 77, the ends of the inclined panel 77 extend to the inner cavity of the floor door frame 4, and the lower end of the floor door frame 4 is symmetrically provided with mounting slots; the top of the inclined panel 77 is vertically clamped with a second rubber strip 74 through a clamping block 76, and a pair of arc plates 73 are symmetrically fixed on both sides of the bottom of the second rubber strip 74, and the top of the second rubber strip 74 is vertically clamped with a first rubber strip 75 through a clamping block 76.

[0042] The above solution is adopted: the first rubber strip 75 and the second rubber strip 74 adopt a double cross-shaped dust collecting groove design, and the electrostatic adsorption fiber layer is embedded in the groove to capture particles with a diameter of 0.5 microns or more. Its mortise and tenon joint structure allows the length of the dust-proof barrier strip to be changed according to the environment. For example, in an environment with less dust, only the first rubber strip 75 needs to be installed, and the modular design reduces the replacement time of a single component to within 30 seconds. The inclined panel 77 and the card block 76 constitute an inclined card connection mechanism, which is self-locking through the card block 76, ensuring structural stability and can be quickly disassembled by pressing with one hand. The arc plates 73 on both sides can also block dust, thereby extending the cleaning cycle inside the protective cover 71.

[0043] like Figure 3 and Figure 6 As shown, the movable door stop mechanism 8 further includes a cross bar 82 fixed to the lower end of the hall door 6 , and a pair of grooves are formed on one side of the floor door frame 4 close to the hall door 6 , and the cross bar 82 is slidably connected in the grooves.

[0044] like Figure 8 and Figure 9 As shown, a pair of cross bars 82 are fixed with racks 85 on the side close to each other, a pair of racks 85 are meshed with gears 86 at the lower ends, and a pair of gears 86 are fixed with threaded rods 87 on the side away from the hall door 6; the pair of threaded rods 87 rotate through the lower end of the floor door frame 4 and extend to the inside of the protective cover 71.

[0045] Using this solution, two crossbars 82 are symmetrically embedded in the U-shaped grooves of the floor door frame 4, forming a dual-rail constraint structure. A hard-oxidized surface treatment reduces the friction coefficient to below 0.15, improving lateral displacement accuracy. This high-precision limiter directly ensures the meshing stability of the rack 85 and gear 86. The rack features an involute tooth profile with a module of 2.5 and a pressure angle of 20°. After carburizing and quenching, the surface hardness reaches HRC58-62, ensuring that the tooth profile remains intact after 20,000 opening and closing cycles.

[0046] like Figure 6 and Figure 9As shown, the outer wall of the threaded rod 87 is threadedly connected with the sliding block 88, one pair of sliding blocks 88 are jointly fixed on the baffle 81 on the side close to each other, and the outer wall of the sliding block 88 is slidingly connected to the inner cavity of the protective cover 71; the floor door frame 4 and the bottom of the protective cover 71 are jointly fixed on the ground 3 through the bottom plate 84, and the bottom of the baffle 81 is slidingly connected to the top of the bottom plate 84.

[0047] By adopting the above scheme, as shown in the figure, Figure 12 As shown, the middle inner cavity of the baffle 81 is provided with a gravity sensor, so as to detect the gravity on the baffle 81, and the system parameters of the gravity range are pre-set, so as to determine whether it is an ordinary object or a human body on the baffle 81, if it is an object, it can be moved normally, if it is a person, it is paused to move until the person leaves.

[0048] The working principle and use process of the application are as follows:

[0049] Firstly, when the elevator door is closed, the baffle 81 is located at the outermost side, and the edge thereof is flush with the end of the protective cover 71. When the elevator door is opened, the car door 5 and the hall door 6 are simultaneously moved to the two sides, and the horizontal rod 82 fixed to the lower end of the hall door 6 and the rack 85 on the horizontal rod 82 are moved. When the rack 85 reaches the position of the gear 86, the continuous movement can make the gear 86 rotate, and the gear 86 drives the threaded rod 87 to rotate synchronously. Then the sliding block 88 on the threaded rod 87 drives the baffle 81 to move axially to the direction of the car 1. Since the material of the baffle 81 is 304 stainless steel, it has no magnetic characteristic, so the first magnet 812 on the rotating plate 89 will not be adsorbed with the baffle 81. After the baffle 81 moves beyond the bottom plate 84, the rotating plate 89 rotates from the parallel state to the vertical state under the action of its own gravity. Then the sliding block 88 moves to the maximum distance, and the side of the baffle 81 away from the sliding block 88 is lapped to the inner cavity surface of the car 1, and the vertical rotating plate 89 is lapped with the car 1. And at this time, the first magnet 812 in the rotating plate 89 is magnetically attracted to the second magnet 811 and lapped with each other, the first magnet 812 slides out of the rotating plate 89 through the limiting sleeve 810, and is clamped into the clamping groove of the car 1. In this way, a locking effect is formed, which ensures that the baffle 81 is not easy to deviate when passengers get on and off the elevator, and appropriately improves the longitudinal load capacity of the lapped position of the baffle 81, which is beneficial to improve the durability;

[0050] Secondly, when the elevator closes, the same as above and reverse operation. A pair of crossbars 82 and rack 85 under the drive of the hall door 6, each other close to the movement, and then through the gear 86 and the slider 88 to the baffle 81 axial direction to move closer to the protective cover 71. Make the baffle 81 completely to the bottom plate 84 position, expose the gap between the car 1 and the floor door frame 4, in order to close the elevator door. Because the upper end of the baffle 81 is arc-shaped, and the side close to the car 1 is gradually narrow, so every time the hall door 6 opens and closes, there is a time to facilitate the movement of the baffle 81, to avoid the hall door 6 and the baffle 81 form movement obstacles. In addition, if someone will be in the way of the hall door 6 and the car door 5 at the bottom to extend the time of the elevator door, and in the case of the door opening time is too long or the object in the blind area of the light curtain sensing, the car door 5 and the hall door 6 will automatically close, resulting in failure. At this time through the movable baffle 81, can greatly avoid the situation of elevator door pinch object. People will put objects under the car door 5 and the hall door 6, the bottom of the object will be placed on the baffle 81, so the baffle 81 will move towards the protective cover 71 during the closing process. If the object has a high center of gravity, it is more likely to fall into the car 1, if the object has a low center of gravity, it is more likely to be taken out by the baffle 81, even if the baffle 81 can not completely take out the object, when the car door 5 and the hall door 6 close, the object with the center of gravity offset can also be squeezed out. In the current situation, if there is an object in the elevator door, more than 90% of the time will pinch the object when closing, which will cause serious damage to the elevator. Through the movable baffle 81, the situation of elevator door pinch object can be greatly reduced when there is no one;

[0051] Finally, through the setting of the handrail 72, if someone rushes to catch the elevator and steps on the moving baffle 81, they can hold the handrail 72 to keep their balance and avoid accidental falls. Due to the complexity of human behavior, gravity sensors are also needed for safety maintenance. If the object is standing on the baffle 81, the pressure exerted on the baffle 81 is usually constant, so it is still constant after a specified time, which is determined to be a general object and the baffle 81 works normally. If a person is standing on the baffle 81, it is impossible to remain completely still, so the pressure is in a state of change, so it is determined to be a person and the baffle 81 is stationary until the person leaves. The anti-slip strip 83 prevents accidental falls. Compared with the gap between the car 1 and the floor door frame 4 in the prior art, the small roller is prone to be stuck. The upper end of the baffle 81 is arc-shaped, which facilitates the use of trolleys to transport goods, and both large and small rollers can pass through. The protective cover 71 has a sliding groove hole at the bottom to allow the slider 88 to slide, and to prevent dust from entering, the first rubber strip 75 and the second rubber strip 74 are spliced to increase the length of the dust-proof strip. The inclined plate 77 and the clamping block 76 are inclined and clamped, which is convenient for installation, replacement, and can block the side dust with the arc plate 73 to improve the dust-proof effect.

[0052] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0053] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator door stop device, comprising a wall (2) and a floor (3), wherein a floor door frame (4) is fixedly connected to the wall (2), the bottom of the floor door frame (4) is fixedly connected to the floor (3), the rear side of the floor door frame (4) is slidably connected to a pair of hall doors (6), a pair of car doors (5) are arranged in parallel behind the hall doors (6), and the pair of car doors (5) are slidably connected to a car (1), characterized in that: It also includes a safety protection mechanism (7), wherein the safety protection mechanism (7) is located in front of the floor door frame (4); A movable door stop mechanism (8), wherein the movable door stop mechanism (8) is arranged at the lower end of the floor door frame (4); The movable door stop mechanism (8) comprises a baffle (81) slidably connected to the inner cavity of the lower end of the floor door frame (4); the upper end of the baffle (81) is arc-shaped and gradually narrows on the side close to the car (1); the baffle (81) is rotatably connected to at least a pair of rotating plates (89) near the inner cavity of the car (1); the middle part of the rotating plate (89) is slidably connected to the limiting sleeve (810) through a limiting groove; the inner cavity of the limiting sleeve (810) is fixed with a first magnet (812); the lower end of the car (1) is provided with at least a pair of clamping grooves, and the clamping grooves are both fixed with second magnets (811); the first magnet (812) and the second magnet (811) are attracted to each other by magnetic force; The safety protection mechanism (7) comprises a protective cover (71) symmetrically fixed to the lower end of the floor door frame (4), a pair of the protective covers (71) are fixed to the top of each handrail (72), and the upper ends of the pair of handrails (72) are fixed to the outer wall of the floor door frame (4); The top edges of the protective covers (71) are fixedly connected with inclined panels (77), the ends of the inclined panels (77) extend to the inner cavity of the floor door frame (4), and the lower ends of the floor door frame (4) are symmetrically provided with mounting slots; The top of the inclined panel (77) is vertically clamped with a second rubber strip (74) via a clamping block (76); a pair of arc plates (73) are symmetrically fixed to the bottom of the second rubber strip (74); and the top of the second rubber strip (74) is vertically clamped with a first rubber strip (75) via a clamping block (76).

2. The elevator door stop device according to claim 1, characterized in that: The movable door stop mechanism (8) further comprises a cross bar (82) fixed to the lower end of the hall door (6); a pair of grooves are provided on one side of the floor door frame (4) close to the hall door (6), and the cross bar (82) is slidably connected in the grooves.

3. The elevator door stop device according to claim 2, characterized in that: A pair of cross bars (82) are fixedly connected to a rack (85) on one side close to each other, a pair of racks (85) are meshed with a gear (86) at their lower ends, and a pair of gears (86) are fixedly connected to a threaded rod (87) on one side away from the hall door (6).

4. The elevator door stop device according to claim 3, characterized in that: A pair of threaded rods (87) rotate through the lower end of the floor door frame (4) and extend into the interior of the protective cover (71).

5. The elevator door stop device according to claim 4, characterized in that: The outer walls of the threaded rods (87) are threadedly connected to sliders (88), and the sides of a pair of sliders (88) close to each other are fixed to the baffle (81). The outer walls of the sliders (88) are slidably connected to the inner cavity of the protective cover (71).

6. The elevator door stop device according to claim 5, characterized in that: The floor door frame (4) and the bottom of the protective cover (71) are fixed to the ground (3) through the bottom plate (84), and the bottom of the baffle (81) is slidably connected to the top of the bottom plate (84).

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