Secondary protection mechanism for emergency unlocking of elevator landing door

Abstract

The invention discloses a secondary protection mechanism for emergency unlocking of elevator landing doors, and relates to the technical field of emergency unlocking of doors. The two ends of the landing door are slidably installed on the lower sliding rail and the upper sliding rail correspondingly. The lower sliding rail and the upper sliding rail are fixedly mounted on a wall body; the unlocking assembly comprises a driving door knife and a driven door knife which are fixedly installed on the landing door. The driving door knife is fixedly mounted with the connecting belt and the steel wire rope; the connecting belt is mounted on two driving rollers arranged on a wall body in a matched manner; a clamping assembly installed on a lift car is connected with an adjusting wheel and a deflection wheel on a second buckle in a clamped mode, the second buckle is driven by the adjusting wheel to move upwards, at the moment, a first buckle and the second buckle are separated, a connecting belt is driven by a driving roller to move, and a driving door vane drives a landing door to move; the driving door vane and the driven door vane are installed on the first steel wire rope in a matched mode at the same time, so that the driving door vane and the driven door vane move in the opposite directions, and normal opening of the landing door is achieved.

Description

Technical Field

[0001] The invention specifically relates to the technical field of emergency door unlocking, in particular to a secondary protection mechanism for emergency unlocking of elevator floor doors. Background Art

[0002] Secondary protection for emergency unlocking of elevator floor doors refers to adding an extra protection measure to the emergency unlocking device of elevator floor doors to improve the safety of elevator use; the current traditional structure includes mechanical lock devices: mechanical locks are installed on the emergency unlocking device, and only specific keys or tools can unlock them. This prevents unauthorized personnel from opening the floor doors at will; electronic lock system: electronic lock system is used to unlock the floor doors through passwords, fingerprint recognition or card swiping. Only authorized personnel can obtain unlocking authority; monitoring and alarm system: monitoring cameras and alarm devices are installed to monitor the elevator floor doors in real time. Once an abnormal unlocking occurs, the system will sound an alarm and notify relevant personnel; interlocking device: interlocking device is set so that the floor door cannot be opened when the elevator is not on this floor, or the elevator cannot run when the floor door is opened.

[0003] At present, when traditional elevator floor doors continue to open and close, they are opened once by a driving device. In this way, when the elevator breaks down, the trapped people inside the elevator cannot escape the elevator by self-rescue and can only wait for rescue from outsiders. However, the rescuers cannot arrive at the rescue site in the first time, which will cause the people inside the elevator to panic and become afraid. In addition, when traditional elevators break down and there are many people inside the elevator, the car will fall, causing injuries to the trapped people inside the elevator.

[0004] After searching, Chinese patent publication number CN201410072913.4 discloses an elevator floor door safety protection device; comprising a floor door sill, a left door panel hanger and a right door panel hanger, a sliding sleeve fixedly mounted on one of the left door panel hanger and the right door panel hanger, a heavy hammer arranged in the sliding sleeve, a switch fixedly mounted relative to the heavy hammer and allowing the elevator to start running only when the switch is triggered, a switch driving member arranged on the heavy hammer for triggering the switch, and a steel wire rope with one end connected to the heavy hammer and the other end connected to the left door panel hanger and the right door panel hanger;

[0005] Although the structure in the above patent can effectively ensure the normal operation of the elevator through the position of the weight, when the weight is stuck in the sleeve during the descending process and cannot descend to the second working position due to some other reasons, the switch cannot be triggered and the elevator is prohibited from starting and running. Although this can achieve the safe operation of the elevator, during the operation of the elevator, when the elevator fails, the people inside the elevator cannot effectively open the level of the trapped floor and need to wait for rescue.

[0006] The present invention designs a secondary protection mechanism for emergency unlocking of elevator floor doors, by arranging a swing rod and a moving rod inside the floor door, wherein the swing rod is connected to a switch through a second steel wire rope. In this way, under normal rotation, when the elevator drives the car to reach a designated floor, the first buckle and the second buckle are matched through a fixed groove on the car to achieve separation. The floor door is opened in two directions at the same time under the action of the connecting belt and the first steel wire rope to achieve normal operation of the elevator. After people enter the car, the floor door is closed again through the clamping cooperation of the first buckle and the second buckle, which effectively avoids the car from being locked. In the case where the floor door is opened when the car is no longer on the current floor, when the elevator fails, the floor door needs to be opened urgently, and the personnel uses the key to activate the emergency lock, and turns the emergency lock to drive the second steel wire rope to rotate, so that the second steel wire rope drives the swing rod to rotate, and when the swing rod contacts the moving rod, the moving rod drives the second buckle to move upward. During the upward movement of the second buckle, the first buckle and the second buckle are separated, and at the same time, the driving structure drives the active roller to rotate, so that the connecting belt drives the active door knife to move, and the active door knife and the driven door knife are installed on the first steel wire rope together to realize the simultaneous opening of the two floor doors. Summary of the invention

[0007] The purpose of the present invention is to provide a secondary protection mechanism for emergency unlocking of elevator floor doors, wherein the emergency lock drives the second steel wire rope to rotate, so that the second steel wire rope drives the swing rod to rotate, and when the swing rod contacts the moving rod, the moving rod drives the second buckle to move upward, and during the upward movement of the second buckle, the first buckle and the second buckle are separated, and at the same time, the driving structure drives the active roller to rotate, so that the connecting belt drives the active door knife to move, and the active door knife and the driven door knife are installed on the first steel wire rope together, so that the two floor doors are opened at the same time; so as to solve the technical problems mentioned in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A secondary protection mechanism for emergency unlocking of elevator floor doors comprises two floor doors that open side by side; the two ends of the floor doors are slidably mounted on a lower slide rail and an upper slide rail respectively; the lower slide rail and the upper slide rail are fixedly mounted on a wall; an unlocking assembly is fixedly mounted on the wall at the top of the upper slide rail; the unlocking assembly comprises an active door knife and a driven door knife fixedly mounted on the floor doors; the active door knife is fixedly mounted on a connecting belt and a steel wire rope; the connecting belt is cooperatively mounted on two active rollers arranged on the wall; the connecting belt is driven to move by the active roller, so that the active door knife installed on the connecting belt moves the corresponding floor door.

[0010] The two ends of the first steel wire rope are fixedly installed on the fixing plate; the fixing plate is fixedly installed on the mounting plate; the first steel wire rope is located at the two ends of the mounting plate and is installed in cooperation with the flywheel. When the active door knife moves driven by the connecting belt, the active door knife is also installed on the first steel wire rope. When the active door knife drives the first steel wire rope to move, the first steel wire rope rotates along the flywheel.

[0011] As a further technical solution of the present invention, a first clip is fixedly installed on one side of the mounting plate; one end of the first clip is bent; the first clip is engaged with the second clip, so that during the normal operation of the floor door, non-staff are prevented from opening the two opposing floor doors from the outside of the floor door, thereby ensuring the safety of personnel.

[0012] As a further technical solution of the present invention, an adjusting wheel and a deflection wheel are provided on the side of the second buckle away from the mounting plate; the adjusting wheel is located on the top of the deflection wheel; the second buckle is movably mounted on the mounting plate; through the rotation of the adjusting wheel and the deflection wheel, one end of the second buckle that cooperates with the first buckle is tilted upward, so that the second buckle is separated from the first buckle, ensuring that the two floor doors can be opened.

[0013] As a further technical solution of the present invention, a moving rod is arranged on the same side of the adjusting wheel and the deflection wheel; the moving rod is movably installed on the inner side of the floor door, and a swing rod is arranged on one side of the moving rod; the swing rod is movably installed on the floor door through a rotating shaft, and the end of the swing rod away from the rotating shaft is connected to the second steel wire rope through an ear plate; the other end of the second steel wire rope is connected to the emergency lock; the second steel wire rope is driven to move by the emergency lock, and when the second steel wire rope moves, the other end of the second steel wire rope is connected to the swing rod, and when the swing rod rotates, the moving rod is fitted with the adjusting wheel and the deflection wheel, so that the second buckle is flipped upward and tilted, and in the process of the second buckle moving upward, the spring of the blocking member installed on the top of the second buckle is compressed, and a certain friction is generated.

[0014] As a further technical solution of the present invention, an elevator shaft is arranged inside the wall, and a driving device is arranged on the top of the elevator shaft, and the driving device is fixedly installed on the lifting structure; the lifting structure is fixedly installed on the car; the driving device is connected to the control device, and when the control device receives an instruction, the lifting structure is driven by the driving device to realize the movement of the car, so that the car stops at a designated floor, and after the car is stable, the floor door opens.

[0015] As a further technical solution of the present invention, the end of the driven door knife away from the floor door is installed in cooperation with the first steel wire rope; the driven door knife and the active door knife are installed in cooperation on the first steel wire rope, and when the active door knife moves under the action of the connecting belt, the driven door knife is also driven to move, thereby realizing the simultaneous opening of two symmetrical floor doors in two opposite directions.

[0016] As a further technical solution of the present invention, a blocking member is provided on the top of the second buckle, and a spring is provided on the blocking member; when the second buckle is moved by the moving rod, the rocker arm is ensured not to fall immediately, and only after the blocking force on the blocking member is reduced can the rocker arm support falling be guaranteed, so that the two floor doors can be opened normally only after the moving rod is separated from the adjusting wheel and the deflection wheel.

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

[0018] When the present invention is in use, when the car runs to the designated floor door, the clamping assembly installed on the car is clamped with the adjusting wheel and the deflection wheel on the second clamp, and the second clamp is driven to move upward by the adjusting wheel. At this time, the first clamp and the second clamp are separated, and the connecting belt is driven to move by the active roller, so that the active door knife drives the floor door to move. The active door knife and the driven door knife are also installed on the first steel wire rope at the same time, so that the active door knife and the driven door knife move in opposite directions, and the floor door is opened normally.

[0019] When the elevator car is in operation and the floor door cannot be opened normally and emergency unlocking is required, personnel are required to drive the second steel wire rope to move by turning the emergency lock. When the second steel wire rope moves, the other end of the second steel wire rope is connected to the rocker arm. When the rocker arm rotates, the moving rod is fitted with the adjusting wheel and the deflection wheel, so that the second buckle is flipped upward and tilted. During the upward movement of the second buckle, the spring of the blocking member installed on the top of the second buckle is compressed. When the spring is compressed to the maximum amount, the second buckle no longer moves. At this time, the first buckle is separated from the second buckle. During the separation of the first buckle and the second buckle, a certain gap will be generated between the two floor doors.

[0020] When it is necessary to continue opening the floor door, the moving rod is still in contact with the adjusting wheel and the deflection wheel, and the normal opening of the floor door cannot be achieved. Even if the staff continues to operate the emergency unlocking or reversely rotates the emergency unlocking, the swing rod and the moving rod will not fall. In order to ensure that the floor door continues to open, the gap between the two floor doors when the first buckle and the second buckle are separated is closed by a certain distance, so that the adjusting wheel and the deflection wheel at the top of the second buckle move forward, and at the same time, the blocking member installed with the spring moves downward under the action of the spring. At this time, the floor door is no longer blocked, and the floor door is opened normally in two directions through two active door knives and driven door knives installed on the first steel wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 The present invention Figure 1Schematic diagram of the rear structure.

[0023] Figure 3 The present invention Figure 1 Another perspective structural diagram of .

[0024] Figure 4 The present invention Figure 1 Bottom view of the bottom structure.

[0025] Figure 5 The present invention Figure 4 Schematic diagram of the unlocking component.

[0026] Figure 6 The present invention Figure 5 Another perspective structural diagram of .

[0027] Figure 7 The present invention Figure 2 Schematic diagram of the splitting.

[0028] Figure 8 The present invention Figure 7 A local enlarged schematic diagram of point A.

[0029] Fig. 9 The present invention Fig. 9 A partial enlarged schematic diagram of point B.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the emergency lock in the present invention.

[0031] Fig.11 The present invention Fig. 9 A partial enlarged schematic diagram of point C.

[0032] In the figure: 1-car, 2-floor door, 3-lower slide rail, 4-upper slide rail, 5-wall, 6-lifting structure, 7-unlocking assembly, 70-mounting plate, 71-driving roller, 72-connecting belt, 73-driving door knife, 74-flywheel, 75-first steel wire rope, 76-driven door knife, 77-swing rod, 78-moving rod, 79-second steel wire rope, 710-emergency lock, 711-first buckle, 712-second buckle, 713-adjusting wheel, 714-deflection wheel, 715-spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-11 In an embodiment of the present invention, a secondary protection mechanism for emergency unlocking of an elevator floor door comprises two floor doors 2 that open in opposite directions; the two ends of the floor door 2 are slidably mounted on a lower slide rail 3 and an upper slide rail 4 respectively; the lower slide rail 3 and the upper slide rail 4 are fixedly mounted on a wall 5; an unlocking assembly 7 is fixedly mounted on the wall 5 at the top of the upper slide rail 4; the unlocking assembly 7 comprises an active door knife 73 and a driven door knife 76 fixedly mounted on the floor door 2; the active door knife 73 is fixedly mounted on a connecting belt 72 and a steel wire rope 75; the connecting belt 72 is cooperatively mounted on two active rollers 71 arranged on the wall 5.

[0035] Both ends of the first steel wire rope 75 are fixedly mounted on the fixing plate; the fixing plate is fixedly mounted on the mounting plate 70; the first steel wire rope 75 is located at both ends of the mounting plate 70 and is mounted in cooperation with the flywheel 74.

[0036] The first buckle 711 is fixedly mounted on one side of the mounting plate 70; one end of the first buckle 711 is bent; the first buckle 711 is engaged with the second buckle 712

[0037] By adopting the above technical solution, when in use, when the car 1 runs to the designated floor door 2, the clamping assembly installed on the car 1 is clamped with the adjusting wheel 713 and the deflection wheel 714 on the second clamp 712, and the second clamp 712 is driven to move upward by the adjusting wheel 713. At this time, the first clamp 711 and the second clamp 712 are separated, and the connecting belt 72 is driven to move by the active roller 71, so that the active door knife 73 drives the floor door 2 to move. The active door knife 73 and the driven door knife 76 are also installed on the first wire rope 75 at the same time, so that the active door knife 73 and the driven door knife 76 move in opposite directions, and the floor door 2 is opened normally.

[0038] In this embodiment, an adjusting wheel 713 and a deflection wheel 714 are provided on a side of the second buckle 712 away from the mounting plate 70 ; the adjusting wheel 713 is located on the top of the deflection wheel 714 ; and the second buckle 712 is movably mounted on the mounting plate 70 .

[0039] To be more specific, a moving rod 78 is arranged on the same side of the adjusting wheel 713 and the deflection wheel 714; the moving rod 78 is movably installed on the inner side of the floor door 2, and a rocker arm 77 is arranged on one side of the moving rod 78; a connecting rod is movably installed between the moving rod 78 and the rocker arm 77; the rocker arm 77 is movably installed on the floor door 2 through a rotating shaft, and the end of the rocker arm 77 away from the rotating shaft is connected to the second steel wire rope 79 through an ear plate; the other end of the second steel wire rope 79 is connected to the emergency lock 710.

[0040] By adopting the above technical solution, when the floor door 2 cannot be opened normally during the operation of the car 1 and emergency unlocking is required, a person is required to drive the second steel wire rope 79 to move by rotating the emergency lock 710. When the second steel wire rope 79 moves, the other end of the second steel wire rope 79 is connected to the swing rod 77. When the swing rod 77 rotates, the swing rod 77 swings through the connecting rod to achieve the fit between the moving rod 78 and the adjusting wheel 713 and the deflection wheel 714, so that the second buckle 712 is flipped upward and tilted. During the upward movement of the second buckle 712, the spring 715 of the blocking member installed on the top of the second buckle 712 is compressed. When the spring 715 is compressed to the maximum compression amount, the second buckle 712 no longer moves. At this time, the first buckle 711 is separated from the second buckle 712. During the separation of the first buckle 711 and the second buckle 712, a certain gap will be generated between the two floor doors 2.

[0041] In this embodiment, the end of the driven door knife 76 away from the landing door 2 is installed in cooperation with the first steel wire rope 75 .

[0042] By adopting the above technical solution, when the first buckle 711 and the second buckle 712 are separated, the active roller 71 realizes the movement of the active door knife 73 through the connecting belt 72, and the active door knife 73 and the driven door knife 76 are installed on the first steel wire rope 75 at the same time. In this way, when the active door knife 73 drives the corresponding floor door 2 to move, the driven door knife 76 also drives the corresponding floor door 2 to move in the opposite direction, thereby opening the two opposite floor doors 2.

[0043] In this embodiment, a blocking member is disposed on the top of the second buckle 712 , and a spring 715 is disposed on the blocking member.

[0044] By adopting the above technical solution, when the second buckle 712 is in contact with the adjusting wheel 713 and the deflection wheel 714 through the moving rod 78, it is ensured that the swing rod 77 will not fall immediately after the second buckle 712 is separated from the first buckle 711, so that a certain blocking force will be generated.

[0045] When the locking cam 714 is in the action state, the locking cam 715 will be in the action state where the locking cam 714 is in the action state, and the locking cam 714 will be in the action state where the locking cam 714 is in the action state.

[0046] The working principle of the present invention is: when in use, when the car 1 runs to the designated floor door 2, the clamping assembly installed on the car 1 is clamped with the adjusting wheel 713 and the deflection wheel 714 on the second clamp 712, and the second clamp 712 is driven to move upward by the adjusting wheel 713. At this time, the first clamp 711 and the second clamp 712 are separated, and the connecting belt 72 is driven to move by the active roller 71, so that the active door knife 73 drives the floor door 2 to move. The active door knife 73 and the driven door knife 76 are also installed on the first wire rope 75 at the same time, so that the active door knife 73 and the driven door knife 76 move in opposite directions, and the normal opening of the floor door 2 is realized.

[0047] When the car 1 is in operation and the floor door 2 cannot be opened normally and emergency unlocking is required, personnel are required to drive the second steel wire rope 79 to move by rotating the emergency lock 710. When the second steel wire rope 79 moves, the other end of the second steel wire rope 79 is connected to the swing rod 77. When the swing rod 77 rotates, it drives the moving rod 78 through the connecting rod. The moving rod 78 drives the second buckle 712 to move, so as to achieve the fit between the moving rod 78 and the adjusting wheel 713 and the deflection wheel 714, so as to achieve the second buckle 712 flipping upward and tilting up. During the upward movement of the second buckle 712, the spring 715 of the blocking member installed on the top of the second buckle 712 is compressed. When the spring 715 is compressed to the maximum compression amount, the second buckle 712 no longer moves. At this time, the first buckle 711 is separated from the second buckle 712. During the separation of the first buckle 711 and the second buckle 712, a certain gap will be generated between the two floor doors 2.

[0048] When the locking cam 714 is in the process of being unlocked, the locking cam 713 is in the process of being unlocked, and the locking cam 714 is in the process of being unlocked.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A secondary protection mechanism for emergency unlocking of elevator landing doors, characterized in that: The invention comprises two double-opening landing doors (2); the two ends of the landing door (2) are respectively slidably mounted on a lower sliding rail (3) and an upper sliding rail (4); the lower sliding rail (3) and the upper sliding rail (4) are fixedly mounted on a wall (5); an unlocking assembly (7) is fixedly mounted on the wall (5) at the top of the upper sliding rail (4); the unlocking assembly (7) comprises an active door knife (73) and a driven door knife (76) fixedly mounted on the landing door (2); the active door knife (73) is fixedly mounted on a connecting belt (72) and a steel wire rope (75); the connecting belt (72) is cooperatively mounted on two active rollers (71) arranged on the wall (5); Both ends of the first steel wire rope (75) are fixedly mounted on a fixing plate; the fixing plate is fixedly mounted on the mounting plate (70); the first steel wire rope (75) is located at both ends of the mounting plate (70) and is mounted in coordination with the flywheel (74).

2. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 1 is characterized in that: A first buckle (711) is fixedly mounted on one side of the mounting plate (70); one end of the first buckle (711) is bent; and the first buckle (711) is snap-fitted with the second buckle (712).

3. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 2 is characterized in that: An adjusting wheel (713) and a deflecting wheel (714) are provided on a side of the second buckle (712) away from the mounting plate (70); the adjusting wheel (713) is located on the top of the deflecting wheel (714); and the second buckle (712) is movably mounted on the mounting plate (70).

4. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 2 is characterized in that: A moving rod (78) is arranged on the same side of the adjusting wheel (713) and the deflection wheel (714); the moving rod (78) is movably mounted on the inner side of the landing door (2); a swing rod (77) is arranged on one side of the moving rod (78); the swing rod (77) is movably mounted on the landing door (2) via a rotating shaft; one end of the swing rod (77) away from the rotating shaft is connected to a second steel wire rope (79) via an ear plate; the other end of the second steel wire rope (79) is connected to an emergency lock (710).

5. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 1 is characterized in that: An elevator shaft is arranged inside the wall (5), and a driving device is arranged on the top of the elevator shaft. The driving device is fixedly installed on the lifting structure (6); and the lifting structure (6) is fixedly installed on the car (1).

6. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 1, characterized in that: The end of the driven door knife (76) away from the landing door (2) is installed in cooperation with the first steel wire rope (75).

7. The secondary protection mechanism for emergency unlocking of elevator landing doors according to claim 1, characterized in that: A blocking member is arranged on the top of the second buckle (712), and a spring (715) is arranged on the blocking member.

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