Elevator landing door system

Abstract

The utility model relates to an elevator landing door system, and belongs to the technical field of car elevator landing door devices. The elevator landing door system comprises an emergency door opening assembly, the emergency door opening assembly comprises a triangular lock, a pull hook plate and an inhaul cable, the first end of the pull hook plate is arranged on a lock hook plate, and the two ends of the inhaul cable are connected with the triangular lock and the second end of the pull hook plate respectively; and the pull hook plate and the lock hook form a lever based on the rotating shaft. According to the utility model, the second end of the pull hook plate is pulled by triggering the inhaul cable through the triangular lock, and the lock hook plate is lifted based on the lever principle, so that the landing door is unlocked; due to the fact that an ejector rod mechanism based on a door lock ejector rod is abandoned, the problem that the door lock ejector rod is stuck or the ejector rod cannot reset naturally does not exist. Meanwhile, due to the fact that the rotating shaft between the lock hook plate and the right hanging plate is further sleeved with the torsion spring, after the landing door is opened and the action on the triangular lock is relieved, the lock hook plate can reset automatically under the action of the torsion spring.

Description

Technical Field

[0001] The utility model relates to an elevator landing door system, belonging to the technical field of car elevator landing door devices. Background Art

[0002] The doors of an elevator include a car door and landing doors. The car door is the door of the car and moves up and down with the user; while the landing doors are the doors of the door openings on each floor, and their height positions are fixed. For safety reasons, the landing doors are normally closed and only open when the elevator car arrives at the corresponding floor.

[0003] To further ensure the normally closed property of the landing doors, it is usually set that the car door drives the landing doors to open; moreover, the landing doors are also provided with a locking hook device. The mechanism for the car door to drive the landing doors is usually called a door knife. The door knife generally includes two strip-shaped door knife bodies arranged vertically and parallel to each other on the left and right. When the car descends or ascends to the stopping position of a certain floor, the two door knife bodies on the left and right just fall on both sides of the unlocking wheel and the shaft wheel of the locking hook device of the landing door, and the unlocking wheel and the shaft wheel of the landing door are not arranged on the same vertical line. Therefore, when the two door knife bodies on the left and right approach each other, the unlocking wheel can be driven to rotate based on the shaft wheel, thereby driving the rotation of the locking hook plate, and then the mechanical lock of the locking hook device of the landing door is opened, so that the landing door can be opened under the action of an external force. At the same time, the door knife is arranged on the car door of the car. When the car door slowly opens, the landing door can be further opened through the force transmission effect of the door knife on the unlocking wheel. For example, in the invention patent with the authorization announcement number of CN 113086796 B, an elevator landing door lock roller and door knife distance monitoring system discloses the following technical content: The car door knife contacts the landing door lock roller of the landing door. When the car door motor operates to drive the door knife, the door knife drives the landing door lock roller of the landing door to move upward, and then the locking hook is lifted, so as to realize the unlocking of the landing door.

[0004] However, the door device is the place where the elevator has the highest failure rate. According to relevant data statistics, elevator door failures account for more than 80% of all elevator failures, and landing door failures account for a significant proportion of them. It is understood that the following problems often occur in the elevator landing door device: 1. When opening the door with a triangular lock, the door lock ejector rod gets stuck, resulting in the landing door not being able to open; 2. After the door lock ejector rod opens the door, the ejector rod cannot return to its original position naturally. Content of the Utility Model

[0005] The utility model aims to solve the above problems and thus provides an elevator landing door system. The elevator landing door system of the utility model abandons the ejector rod mechanism based on the door lock ejector rod, the ejector rod fixed sleeve and the return spring, adopts a design based on a pulling hook plate and a cable, uses the lever principle, controls the cable through a triangular lock, and triggers the pulling hook plate to lift the locking hook under the action of the lever principle, so as to realize the unlocking of the landing door.

[0006] The technical solution for the utility model to solve the above problems is as follows:

[0007] An elevator landing door system includes a header plate provided with a horizontal sliding track, a left hanging plate and a right hanging plate installed on the header plate through the horizontal sliding track; it further includes a locking hook assembly, the locking hook assembly includes a locking plate provided on the left hanging plate and / or the header plate and a locking hook plate provided on the right hanging plate; the locking opening of the locking plate and the locking hook of the locking hook plate are correspondingly arranged; the locking hook plate is rotatably connected to the right hanging plate through a rotating shaft sleeved with a torsion spring; one end of the rotating shaft extending out of the locking hook plate forms an extension section, and a guide wheel is arranged on the extension section; an unlocking wheel not larger than the guide wheel and arranged in the same direction as the guide wheel is further arranged at a position above the left or below the right of the guide wheel on the locking hook plate; the elevator landing door system further includes an emergency door opening assembly, the emergency door opening assembly includes a triangular lock, a pulling hook plate and a cable, the first end of the pulling hook plate is arranged on the locking hook plate, and both ends of the cable are respectively connected to the triangular lock and the second end of the pulling hook plate; the pulling hook plate and the locking hook form a lever based on the rotating shaft.

[0008] In the above technical solution of the present utility model, the lever principle is adopted. By triggering the cable with the triangular lock to pull the second end of the pulling hook plate, and the first end of the pulling hook plate is fixed to the locking hook plate, and the locking hook plate is rotatably connected to the right hanging plate. Therefore, under the trigger of the triangular lock, the locking hook plate can be lifted, thereby realizing the unlocking of the landing door. Since the above technical solution abandons the ejector rod mechanism based on the door lock ejector rod, the ejector rod fixing sleeve and the return spring, there is no problem of the door lock ejector rod being stuck or the ejector rod not being able to return naturally. At the same time, since a torsion spring is also sleeved on the rotating shaft between the locking hook plate and the right hanging plate, after the landing door is opened and the operation of the triangular lock is released, the locking hook plate can automatically reset under the action of the torsion spring.

[0009] As a preference of the above technical solution, the elevator landing door system further includes a door panel synchronization assembly, the door panel synchronization assembly includes: a first guide wheel and a second guide wheel respectively arranged at both ends of the header plate, and a steel wire rope wound around the first guide wheel and the second guide wheel; the steel wire rope includes an upper section and a lower section integrally connected, the left hanging plate is fixed to the upper section, and the right hanging plate is fixed to the lower section.

[0010] As a preference of the above technical solution, the right hanging plate is fixed to the lower section through a fixed joint and a wire rope tensioner; the fixed joint is arranged at the left end of the right hanging plate, and the wire rope tensioner is arranged at the right end of the right hanging plate.

[0011] As an optimization of the above technical solution, the elevator landing door system further includes a door panel reset assembly, and the door panel reset assembly includes: a suspension cable, a joint provided on the right hanging plate for fixing the suspension cable, a movable pulley provided on the left hanging plate for winding the suspension cable, and a telescopic control rod provided at the end of the suspended end of the suspension cable.

[0012] As an optimization of the above technical solution, the telescopic control rod is a self-returning air cylinder.

[0013] In the above technical solution of the present utility model, under the action of the self-returning air cylinder, the suspension cable is tightened. After being guided by the movable pulley, the right hanging plate is pulled to the left. At the same time, under the action of the door panel synchronization assembly, the left hanging plate moves to the right simultaneously, thereby realizing the automatic closing of the landing door.

[0014] As an optimization of the above technical solution, the horizontal sliding track includes an upwardly provided arc-shaped convex track and a downwardly provided flat track; the arc-shaped convex track and the flat track are integrally connected; upper hanging wheels that cooperate with the arc-shaped convex track and lower hanging wheels that cooperate with the flat track are provided on both the left hanging plate and the right hanging plate.

[0015] As an optimization of the above technical solution, an anti-disengagement hook for preventing the lower hanging wheel from disengaging is further provided on the door header plate.

[0016] As an optimization of the above technical solution, the lock plate includes a fixed lock plate provided at the central position of the door header plate and a movable lock plate provided at the right end of the left hanging plate; when the left hanging plate moves to the rightmost position, the projection positions of the fixed lock plate and the movable lock plate coincide.

[0017] In the above technical solution of the present utility model, the fixed lock plate and the movable lock plate are combined into one to form a lock plate, which is used to cooperate and connect with the lock hook of the lock hook plate, so that the lock hook assembly not only locks the right hanging plate, but also directly locks the left hanging plate instead of only indirectly locking the left hanging plate through the door panel synchronization assembly, having the effect of double locking; ensuring the normally closed state of the landing door under normal circumstances.

[0018] As an optimization of the above technical solution, the lock plate includes a body portion provided with a lock port and a guiding portion integrally connected to the body portion and having a guiding inclined surface.

[0019] In the above technical solution of the present utility model, the end of the lock hook has an inclined surface that cooperates with the guiding portion. Based on the cooperation of the two inclined surfaces, it is convenient for the lock hook to enter the lock port of the lock plate under the action of an external force.

[0020] As a preferred embodiment of the above technical solution, the elevator floor door system also includes a travel switch, which includes a switch body fixedly arranged on the door head plate and a conducting contact arranged at the end of the left hanging plate corresponding to the switch body.

[0021] As a preferred embodiment of the above technical solution, the elevator floor door system also includes a second travel switch, which includes a second switch body fixedly arranged on the door head plate, and a second conducting contact arranged on the lock hook plate corresponding to the second switch body.

[0022] In the above technical solution of the utility model, after the switch body and the second switch body are turned on, it indicates that the corresponding floor door has been closed. After this passage signal is received by the control system of the elevator, the control system will release the effect of the elevator brake, making it convenient for the elevator car to perform the next action.

[0023] As a preferred embodiment of the above technical solution, the door head plate is horizontally positioned by two symmetrically arranged horizontal fixing plates, and is longitudinally positioned by two symmetrically arranged vertical fixing plates; the horizontal fixing plates support the door head plate from the bottom, and the vertical fixing plates hang the door head plate from the top.

[0024] In summary, the utility model has the following beneficial effects:

[0025] 1. The utility model uses the triangular lock to trigger the cable to pull the second end of the hook plate, and lifts the lock hook plate based on the lever principle, thereby realizing the unlocking of the landing door; since the push rod mechanism based on the door lock push rod is abandoned, there is no problem that the door lock push rod is stuck or the push rod cannot be naturally reset; at the same time, since a torsion spring is also sleeved on the rotating shaft between the lock hook plate and the right hanging plate, after the landing door is opened and the action on the triangular lock is released, the lock hook plate can also be automatically reset under the action of the torsion spring;

[0026] 2. The fixed locking plate and the movable locking plate of the utility model are combined into one to form a locking plate, which is used to cooperate with the lock hook of the lock hook plate, so that the lock hook assembly not only locks the right hanging plate, but also directly locks the left hanging plate instead of only indirectly locking the left hanging plate through the door panel synchronization assembly, which has the effect of double locking; ensuring the normally closed property of the landing door under normal circumstances;

[0027] 3. The configuration of the horizontal sliding track, upper and lower hanging wheels and anti-drop hook of the utility model not only makes the left and right hanging plates slide smoothly, but also prevents them from falling off the slide rail, and has the characteristics of good stability;

[0028] 4. The utility model fixes the door head plate by means of a horizontal fixing plate and a vertical fixing plate, and has the advantages of being easy to install and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structure diagram of the present utility model;

[0030] Figure 2 is Figure 1 partial enlarged view;

[0031] Figure 3 is Figure 1 side view;

[0032] In the figure, 1 - door header board; 11 - horizontal sliding track, 12 - anti - detachment hook; 21 - left hanging board, 22 - right hanging board, 23 - upper hanging wheel, 24 - lower hanging wheel; 31 - lock port board, 32 - lock hook board, 33 - rotating shaft, 35 - guide wheel, 36 - unlocking wheel; 41 - triangular lock, 42 - cable, 43 - pulling hook board; 52 - steel wire rope, 61 - telescopic control rod, 62 - suspension cable, 63 - joint, 64 - movable pulley, 71 - switch body, 72 - conducting contact; 81 - second switch body, 82 - second conducting contact; 91 - horizontal fixing plate, 92 - vertical fixing plate; 221 - fixed joint, 222 - steel wire rope tensioner, 311 - fixed lock port board, 312 - movable lock port board, 321 - lock hook, 511 - first guide wheel, 512 - second guide wheel, 521 - upper section, 522 - lower section. Specific embodiments

[0033] The present utility model will be further explained below with reference to the accompanying drawings.

[0034] This specific embodiment is only an interpretation of the present utility model and not a limitation thereof. Any changes made by those skilled in the art after reading the specification of the present utility model, as long as they are within the scope of the claims, will be protected by the patent law.

[0035] As Figure 1 shown, an elevator landing door system includes a door header board 1, a left hanging board 21 and a right hanging board 22 provided based on the door header board 1, and various components provided based on the left hanging board 21 and the right hanging board 22.

[0036] The door header board 1 is fixed by a horizontal fixing plate 91 and a vertical fixing plate 92. There are two horizontal fixing plates 91 and two vertical fixing plates 92, both of which are symmetrically arranged. Among them, the horizontal fixing plate 91 is arranged inside the door header board 1, and the hook of the horizontal fixing plate 91 extends from the bottom of the door header board 1 to support the door header board 1; while the vertical fixing plate 92 hangs and holds the door header board 1 from the upper part of the door header board 1.

[0037] As Figure 1 and 2As shown in the figure, a horizontal sliding track 11 is provided on the door header plate 1. The horizontal sliding track 11 includes an arc-shaped convex track 111 arranged upward and a flat track 112 arranged downward; the arc-shaped convex track 111 and the flat track 112 are integrally connected; upper hanging wheels 23 that cooperate with the arc-shaped convex track 111 and lower hanging wheels 24 that cooperate with the flat track 112 are provided on both the left hanging plate 21 and the right hanging plate 22. An anti-disengagement hook 12 is further provided at the bottom of the door header plate 1 to prevent the left hanging plate 21 and the right hanging plate 22 from disengaging during movement.

[0038] Based on the various components provided on the left hanging plate 21 and the right hanging plate 22, including a locking hook component, a door panel synchronization component, a door panel reset component, an emergency door opening component, and a signal-related component.

[0039] As Figure 2 As shown in the figure, the locking hook component is used for locking and unlocking the left hanging plate 21 and the right hanging plate. Its basic structure is a locking hook and a locking mouth. When the locking hook is embedded in the locking mouth, both the left and right hanging plates are locked; when the locking hook disengages from the locking mouth, both the left and right hanging plates are unlocked. A limiting component is further provided on the door header plate 1 to determine the rightmost docking position of the left hanging plate 21 and the leftmost docking position of the right hanging plate. Usually, when the left hanging plate 21 moves to the rightmost docking position and the right hanging plate moves to the leftmost docking position, they are synchronous, and at this time, both the left and right hanging plates are in a locked state. Specifically, the locking hook component includes a locking mouth plate 31 provided on the left hanging plate 21 and / or the door header plate 1 and a locking hook plate 32 provided on the right hanging plate 22; the locking mouth of the locking mouth plate 31 and the locking hook 321 of the locking hook plate 32 are correspondingly arranged. The locking mouth plate 31 includes a fixed locking mouth plate 311 provided at the center position of the door header plate 1 and a movable locking mouth plate 312 provided at the right end of the left hanging plate 21; when the left hanging plate 21 moves to the rightmost position, the projection positions of the fixed locking mouth plate 311 and the movable locking mouth plate 312 coincide. The locking mouth plate 31 includes a body portion provided with a locking mouth and a guiding portion integrally connected to the body portion and having a guiding inclined surface. The locking hook plate 32 is rotatably connected to the right hanging plate 22 through a rotating shaft 33 sleeved with a torsion spring; one end of the rotating shaft 33 extending out of the locking hook plate 32 forms an extension section, and a guide wheel 35 is provided on the extension section; an unlocking wheel 36 smaller than the guide wheel 35 and arranged in the same direction as the guide wheel 35 is further provided at a position above the left of the guide wheel 35 on the locking hook plate 32. When the two door knives on the left and right approach each other, the unlocking wheel 36 can be driven to rotate based on the shaft wheel 33, thereby driving the rotation of the locking hook plate 32, and then the locking hook component is opened, so that the landing door can be opened under the action of an external force. At the same time, the door knife is provided on the car door of the car. When the car door slowly opens, through the force transmission action of the door knife on the unlocking wheel, the landing door can be further opened.

[0040] As Figure 1As shown, the door panel synchronization assembly includes: a first guide wheel 511 and a second guide wheel 512 respectively arranged at both ends of the door header plate 1, and a wire rope 52 wound around the first guide wheel 511 and the second guide wheel 512. As Figure 2 As shown, the wire rope 52 includes an upper section 521 and a lower section 522 which are integrally connected. The left hanging plate 21 is fixed to the upper section 521 through a pressing plate and a rivet bolt; the right hanging plate is fixed to the lower section 522 through a fixed joint 221 and a wire rope tensioner 222. Among them, the fixed joint 221 is arranged at the left end of the right hanging plate 22, and the wire rope tensioner 222 is arranged at the right end of the right hanging plate 22.

[0041] As Figure 1 and Figure 2 As shown, the door panel reset assembly includes: a suspension cable 62, a joint 63 arranged on the right hanging plate 22 for fixing the suspension cable 62, a movable pulley 64 arranged on the left hanging plate 21 for winding the suspension cable 62, and a telescopic control rod 61 arranged at the suspended end of the suspension cable 62; further, the telescopic control rod 61 is a self-returning air cylinder.

[0042] As Figure 2 As shown, the emergency door opening assembly includes: a triangular lock 41, a hook plate 43 and a cable 42. The first end of the hook plate 43 is arranged on the lock hook plate 32, and the second end of the hook plate 43 is suspended;

[0043] Both ends of the cable 42 are respectively connected to the suspended second end of the hook plate 43 and the actuating part of the triangular lock 41; the hook plate 43 and the lock hook 321 of the lock hook plate 32 form a lever based on the rotating shaft 33. When the actuating part of the triangular lock 41 is actuated, the suspended second end of the hook plate 43 is stressed, and the lock hook plate 32 rotates around the rotating shaft 33, thereby lifting the lock hook 321 upward to unlock without passing through the door knife.

[0044] As Figure 2 As shown, the signal-related assembly is mainly based on the travel switch. When the travel switch is turned on, the electrical path signal is transmitted to the control system of the elevator, indicating that the landing door has been closed and the next action can be executed. Specifically, it includes two sets of travel switches, corresponding to the left hanging plate 21 and the right hanging plate 22 respectively. Specifically, it includes a switch body 71 fixedly arranged on the door header plate 1, and a conducting contact 72 arranged at the end of the left hanging plate 21 corresponding to the switch body 71; it includes a second switch body 81 fixedly arranged on the door header plate 1, and a second conducting contact 82 arranged on the lock hook plate 32 corresponding to the second switch body 81. When the lock hook assembly is locked, the second conducting contact 82 and the second switch body 81 complete contact to achieve conduction; under the action of the synchronous door panel synchronization assembly, at this time, the conducting contact 71 and the switch body 71 also just contact to achieve conduction.

Claims

1. An elevator landing door system, comprising a header plate (1) provided with a horizontal sliding track (11), a left hanging plate (21) and a right hanging plate (22) mounted on the header plate (1) through the horizontal sliding track (11); further comprising a locking hook assembly, the locking hook assembly including a locking plate (31) provided on the left hanging plate (21) and / or the header plate (1) and a locking hook plate (32) provided on the right hanging plate (22); the locking opening of the locking plate (31) and the locking hook (321) of the locking hook plate (32) are correspondingly arranged; characterized in that: The described hook plate (32) is rotatably connected to the right hanging plate (22) through a rotating shaft (33) sleeved with a torsion spring; one end of the rotating shaft (33) extending out of the hook plate (32) forms an extension section, and a guide wheel (35) is arranged on the extension section; an unlocking wheel (36) not larger than the guide wheel (35) and arranged in the same direction as the guide wheel (35) is also arranged at a position above the left or below the right of the guide wheel (35) on the hook plate (32); the elevator landing door system further includes an emergency door opening assembly, and the emergency door opening assembly includes a triangular lock (41), a hook plate (43) and a cable (42). The first end of the hook plate (43) is arranged on the hook plate (32), and the two ends of the cable (42) are respectively connected to the triangular lock (41) and the second end of the hook plate (43); the hook plate (43) and the hook (321) form a lever based on the rotating shaft (33).

2. The elevator landing door system according to claim 1, characterized in that, The elevator landing door system further includes a door panel synchronization assembly, and the door panel synchronization assembly includes: a first guide wheel (511) and a second guide wheel (512) respectively arranged at both ends of the door head plate (1), and a steel wire rope (52) wound around the first guide wheel (511) and the second guide wheel (512); the steel wire rope (52) includes an upper section (521) and a lower section (522) integrally connected. The left hanging plate (21) is fixed to the upper section (521), and the right hanging plate (22) is fixed to the lower section (522).

3. The elevator landing door system according to claim 2, characterized in that: The right hanging plate (22) is fixed to the lower section (522) through a fixed joint (221) and a wire rope tensioner (222); the fixed joint (221) is arranged at the left end of the right hanging plate (22), and the wire rope tensioner (222) is arranged at the right end of the right hanging plate (22).

4. An elevator landing door system according to claim 2 or 3, characterized in that, The elevator landing door system further includes a door panel reset assembly, and the door panel reset assembly includes: a suspension cable (62), a joint (63) arranged on the right hanging plate (22) for fixing the suspension cable (62), a movable pulley (64) arranged on the left hanging plate (21) for winding the suspension cable (62), and a telescopic control rod (61) arranged at the end of the suspended end of the suspension cable (62).

5. A lift landing door system according to claim 1, characterized in that: The described horizontal sliding track (11) includes an upwardly arranged arc-shaped convex track (111) and a downwardly arranged flat track (112); the arc-shaped convex track (111) and the flat track (112) are integrally connected; upper hanging wheels (23) arranged in cooperation with the arc-shaped convex track (111) and lower hanging wheels (24) arranged in cooperation with the flat track (112) are arranged on both the left hanging plate (21) and the right hanging plate (22).

6. The elevator landing door system according to claim 1, characterized in that: The lock plate (31) includes a fixed lock plate (311) arranged at the central position of the door head plate (1) and a movable lock plate (312) arranged at the right end of the left hanging plate (21); when the left hanging plate (21) moves to the rightmost position, the projection positions of the fixed lock plate (311) and the movable lock plate (312) coincide.

7. The elevator landing door system according to claim 6, characterized in that: The described locking plate (31) includes a body portion provided with a locking opening and a guiding portion integrally connected to the body portion and having a guiding inclined surface.

8. An elevator landing door system according to claim 1, characterized in that: The described elevator landing door system further includes a travel switch, and the travel switch includes a switch body (71) fixedly arranged on the header plate (1) and a conduction contact (72) arranged at the end of the left hanging plate (21) corresponding to the switch body (71).

9. The elevator landing door system according to claim 1, wherein: The described elevator landing door system further includes a second travel switch, and the second travel switch includes a second switch body (81) fixedly arranged on the header plate (1) and a second conduction contact (82) arranged on the locking hook plate (32) corresponding to the second switch body (81).

10. A lift landing door system according to claim 1, characterized in that: The described header plate (1) is horizontally positioned respectively by two symmetrically arranged horizontal fixing plates (91), and longitudinally positioned respectively by two symmetrically arranged vertical fixing plates (92); the horizontal fixing plates (91) support the header plate (1) from the bottom, and the vertical fixing plates (92) hang the header plate (1) from the upper part.

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