Elevator car door opening anti-falling device

Abstract

The utility model discloses an elevator car door opening anti-falling device and belongs to the technical field of elevator anti-falling. When a car reaches a flat layer position, a driving mechanism drives a car door to be opened, the car door drives a driving part to move synchronously, and the driving part enables a first driven part to extend out of the car through transmission of a transmission mechanism; along with the increase of the opening distance of the car door, the first driven piece is gradually inserted into the anti-falling hole of the anti-falling piece at the position corresponding to the flat layer on the guide rail frame, so that the first driven piece is matched with the anti-falling hole of the anti-falling piece, and the car is prevented from falling or rushing to the top when the car door is opened.

Description

Technical Field

[0001] This utility model relates to the field of elevator anti-fall technology, and in particular to an elevator car door opening anti-fall device. Background Technology

[0002] Elevator safety has always been a core concern for people when purchasing and using elevators. As a form of public transportation, elevator safety accidents typically attract significant attention. Currently, elevator accidents involving the car opening and the elevator falling are considered serious safety incidents. Existing fall protection devices are designed to prevent elevators from falling or overshooting the ceiling; however, if the elevator doors are open and an accident occurs involving a fall or overshoot, the emergency braking process of the fall protection device can cause serious injury to people entering or exiting the elevator. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an elevator car door opening anti-fall device. As the car door opens a greater distance, a first driven member gradually inserts into the anti-fall hole of the anti-fall member at the corresponding leveling position on the guide rail frame, thereby making the first driven member cooperate with the anti-fall hole of the anti-fall member to prevent the car from falling or hitting the top when the car door is opened.

[0004] The elevator car door opening anti-fall device according to an embodiment of the present utility model includes:

[0005] The car is equipped with a door and guide boots;

[0006] A drive mechanism is provided in the car, the drive mechanism is connected to the car door, and the drive mechanism drives the car door to move horizontally;

[0007] The guide rail frame is arranged vertically, and the guide rail frame is provided with a vertically arranged guide rail. The guide rail and the guide shoe are slidably or rollingly engaged vertically. The guide rail frame is also provided with a plurality of anti-falling components distributed at intervals vertically, and each anti-falling component is provided with an anti-falling hole.

[0008] An active component is connected to the car door, and the active component moves synchronously with the car door;

[0009] The first driven member is horizontally and slidably connected to the car;

[0010] A transmission mechanism is provided in the car. The transmission mechanism connects the driving member and the first driven member. The driving member drives the first driven member to insert into or disengage from the fall arrest hole on the corresponding floor through the transmission mechanism.

[0011] The elevator car door opening anti-fall device according to the embodiment of the present utility model has at least the following beneficial effects: when the car reaches the leveling position, the drive mechanism drives the car door to open, and the car door drives the driving member to move synchronously. The driving member uses the transmission mechanism to drive the first driven member to extend outward outside the car. As the opening distance of the car door increases, the first driven member gradually inserts into the anti-fall hole of the anti-fall member corresponding to the leveling position on the guide rail frame, thereby making the first driven member cooperate with the anti-fall hole of the anti-fall member to prevent the car from falling or hitting the top when the car door is opened.

[0012] According to some embodiments of this utility model, there are two guide shoes and two guide rail frames. The two guide rail frames are distributed on both sides of the car. The two guide shoes are slidably or rollingly engaged with the two guide rails respectively. The elevator car door opening anti-fall device further includes:

[0013] The second driven member is horizontally slidably connected to the car. The second driven member is connected to the transmission mechanism. The driving member drives the first driven member and the second driven member to insert into or detach from the two fall arrest holes on the corresponding floors through the transmission mechanism.

[0014] According to some embodiments of the present invention, the driving member, the transmission mechanism, the first driven member, and the second driven member adopt a gear and rack meshing transmission.

[0015] According to some embodiments of the present invention, the driving member is provided with a driving rack, the first driven member is provided with a first driven rack, the second driven member is provided with a second driven rack, and the transmission mechanism includes:

[0016] A first drive gear is disposed in the car, and the first drive gear meshes with the drive rack;

[0017] A second drive gear is disposed in the car, and the second drive gear meshes with the first drive gear;

[0018] A first driven gear is disposed in the car, and the first driven rack and the second driving gear respectively mesh with the first driven gear;

[0019] The second driven gear is coaxially connected to the first driven gear, and the second driven gear meshes with the second driven rack.

[0020] According to some embodiments of the present invention, the first follower and the second follower move in opposite directions.

[0021] According to some embodiments of the present invention, the outer diameters of the first driving gear, the second driving gear, the first driven gear, and the second driven gear are the same.

[0022] According to some embodiments of the present invention, the width of the first driven member in the vertical direction and the width of the second driven member in the vertical direction are smaller than the width of the fall arrest hole in the vertical direction.

[0023] According to some embodiments of the present invention, the drive mechanism, the first driven member, the second driven member, and the transmission mechanism are all disposed on the top of the car, and the driving member is connected to the top of the car door.

[0024] According to some embodiments of this utility model, the horizontal distance between the anti-fall member and the first driven member is not greater than half of the travel distance when the car door is opened.

[0025] According to some embodiments of this utility model, the horizontal distance between the anti-fall component and the first driven component is no more than 20cm. Attached Figure Description

[0026] Figure 1 This is a top view schematic diagram of an elevator car door opening anti-fall device according to an embodiment of the present invention;

[0027] Figure 2 This is a front view schematic diagram of the guide rail and anti-fall component in one embodiment of this utility model.

[0028] Reference numerals: Car 100, Car door 110, Guide shoe 120, Guide rail frame 200, Guide rail 210, Fall arrestor 220, Fall arrest hole 221, Driving component 300, Driving rack 310, First driven component 400, First driven rack 410, Second driven component 500, Second driven rack 510, Transmission mechanism 600, First driving gear 610, Second driving gear 620, First driven gear 630, Second driven gear 640. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0032] In the description of this utility model, it should be noted that terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0034] Reference Figures 1 to 2 As shown, this utility model provides an elevator car door opening anti-fall device.

[0035] The elevator car door opening anti-fall device includes a car 100, a drive mechanism, two guide rails 200, a driving component 300, a first driven component 400, a second driven component 500, and a transmission mechanism 600.

[0036] The front of the car 100 is provided with a sliding door 110, and guide shoes 120 are provided on the left and right sides of the car 100.

[0037] The drive mechanism is located on the top of the car 100 and is connected to the car door 110. The drive mechanism drives the car door 110 to move horizontally in the left and right directions.

[0038] There are various forms of drive mechanisms. For example, the drive mechanism can be a linear motor; or, a rack can be installed on the car door 110, and the drive mechanism can consist of a motor and a gear. The motor is connected to the gear, and the gear meshes with the rack. The motor drives the gear to rotate, causing the rack to move accordingly, thereby causing the car door 110 to translate in the left and right directions; or, the drive mechanism can include a motor, a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt. The motor is located on the top of the car 100, the driving synchronous pulley is mounted on the output shaft of the motor, the driven synchronous pulley is rotatably mounted on the top of the car 100, and the synchronous belt is fitted over the driving and driven synchronous pulleys. The synchronous belt is connected to the car door 110, and the motor drives the driving synchronous pulley to rotate, causing the driving and driven synchronous pulleys to move the synchronous belt, thereby causing the car door 110 to translate in the left and right directions.

[0039] Reference Figure 1As shown, two guide rail frames 200 are respectively set on the left and right sides of the car 100. Each guide rail frame 200 is set in the vertical direction. Each guide rail frame 200 has a guide rail 210 on the side facing the car 100. The guide rail 210 is set in the vertical direction. The two guide rails 210 are matched one-to-one with the two guide shoes 120 of the car 100. The guide shoes 120 are slidably connected to the guide rails 210 to ensure that the car 100 moves up and down in the vertical direction and to prevent the car 100 from deviating in the front-back or left-right direction.

[0040] Reference Figure 2 As shown, each guide rail frame 200 is provided with multiple anti-fall components 220, which are arranged at equal intervals along the vertical direction. The anti-fall components 220 are integrally formed with the guide rail frame 200 or fixed to the guide rail frame 200 with bolts. Each anti-fall component 220 has an anti-fall hole 221 on the side facing the car 100, and the anti-fall hole 221 is a rectangular hole.

[0041] The number of anti-fall devices 220 corresponds to the number of floor positions in the building where the elevator is located. Each guide rail 200 is equipped with an anti-fall device 220 at each floor position. When the car 100 moves to the floor position, the position of the anti-fall device 220 corresponds to the position of the top of the car 100.

[0042] Among them, reference Figure 1 As shown, the anti-fall device 220 of the guide rail frame 200 located on the left side of the car 100 is connected to the front side of the guide rail frame 200, and the anti-fall device 220 of the guide rail frame 200 located on the right side of the car 100 is connected to the rear side of the guide rail frame 200. This makes the anti-fall devices 220 of the two guide rail frames 200 staggered in the front-back direction.

[0043] The front side of the drive member 300 is connected to the top of the car door 110, and the drive member 300 moves in the left and right direction along with the car door 110.

[0044] An active rack 310 is provided on the rear side of the active component 300. The active rack 310 is arranged in the left-right direction and the tooth surface of the active rack 310 faces the rear.

[0045] The first driven member 400 is slidably connected to the top of the car 100 and slides in the left and right direction. The second driven member 500 is slidably connected to the top of the car 100. The transmission mechanism 600 is also located on the top of the car 100. The second driven member 500 is located between the first driven member 400 and the driving member 300. In order to avoid the transmission mechanism 600, the second driven member 500 and the first driven member 400 are offset in height in the vertical direction. For this purpose, a bracket can be set on the top of the car 100, and the slide rail can be installed on the bracket. The bracket is used to avoid the transmission mechanism 600 on the top of the car 100. The second driven member 500 is installed on the slide rail so that the second driven member 500 slides in the left and right direction.

[0046] Furthermore, referring to Figure 1 As shown, the position of the first follower 400 in the front-back direction corresponds to the position of the anti-fall hole 221 of the anti-fall member 220 of the guide rail frame 200 located on the right, and the position of the second follower 500 in the front-back direction corresponds to the position of the anti-fall hole 221 of the anti-fall member 220 of the guide rail frame 200 located on the left.

[0047] Reference Figure 1 As shown, the transmission mechanism 600 includes a first driving gear 610, a second driving gear 620, a first driven gear 630, and a second driven gear 640.

[0048] The first drive gear 610 is rotatably connected to the top of the car 100. The rotation axis of the first drive gear 610 is set in the vertical direction. The front side of the first drive gear 610 meshes with the drive rack 310. When the drive rack 310 moves to the left, the first drive gear 610 rotates counterclockwise. When the drive rack 310 moves to the right, the first drive gear 610 rotates clockwise.

[0049] The second drive gear 620 is rotatably connected to the top of the car 100. The rotation axis of the second drive gear 620 is set in the vertical direction. The front side of the second drive gear 620 meshes with the rear side of the first drive gear 610. The rotation of the first drive gear 610 will drive the second drive gear 610 to rotate. The counterclockwise rotation of the first drive gear 610 will cause the second drive gear 620 to rotate clockwise, and the clockwise rotation of the first drive gear 610 will cause the second drive gear 620 to rotate counterclockwise.

[0050] The first driven gear 630 is rotatably connected to the top of the car 100. The rotation axis of the first driven gear 630 is set in the vertical direction. The front side of the first driven gear 630 meshes with the rear side of the second driving gear 620. The rear side of the first driven gear 630 meshes with the first driven rack 410. The rotation of the second driving gear 620 will drive the first driven gear 630 to rotate. The clockwise rotation of the second driving gear 620 will cause the first driven gear 630 to rotate counterclockwise and drive the first driven rack 410 to move to the right. The counterclockwise rotation of the second driving gear 620 will cause the first driven gear 630 to rotate clockwise and drive the first driven rack 410 to move to the left.

[0051] The axis of the second driven gear 640 is connected to the axis of the first driven gear 630. The second driven gear 640 and the first driven gear 630 rotate synchronously. The front side of the second driven gear 640 meshes with the second driven rack 510. When the first driven gear 630 rotates counterclockwise, it causes the second driven gear 640 to rotate counterclockwise and drives the second driven rack 510 to move to the left. When the first driven gear 630 rotates clockwise, it causes the second driven gear 640 to rotate clockwise and drives the second driven rack 510 to move to the right.

[0052] Therefore, refer to Figure 1 As shown, when the drive mechanism moves the car door 110 to the left to open the car door 110, the car door 110 moves the driving member 300 to the left. The driving rack 310 of the driving member 300 moves to the left, causing the first driving gear 610 to rotate counterclockwise. The counterclockwise rotation of the first driving gear 610 causes the second driving gear 620 to rotate clockwise. The clockwise rotation of the second driving gear 620 causes the first driven gear 630 to rotate counterclockwise and drives the first driven rack 410 to move to the right, causing the first driven gear 630 to move counterclockwise. The rack 410 and the first driven member 400 are inserted to the right into the anti-fall hole 221 of the right anti-fall member 220. The first driven gear 630 rotates counterclockwise, causing the second driven gear 640 to rotate counterclockwise and drive the second driven rack 510 to move to the left. This causes the second driven rack 510 and the second driven member 500 to be inserted to the left into the anti-fall hole 221 of the left anti-fall member 220, preventing the car 100 from moving relative to the anti-fall member 220, thereby preventing the car from falling or hitting the top when the car door is opened.

[0053] Reference Figure 1 As shown, when the drive mechanism moves the car door 110 to the right to close the car door 110, the car door 110 moves the driving member 300 to the right. The driving rack 310 of the driving member 300 moves to the right, causing the first driving gear 610 to rotate clockwise. The clockwise rotation of the first driving gear 610 causes the second driving gear 620 to rotate counterclockwise. The counterclockwise rotation of the second driving gear 620 causes the first driven gear 630 to rotate clockwise and drives the first driven rack 410 to move to the left, causing the first driven rack 410 and the first driven member 400 to disengage from the fall protection hole 221 of the right-side fall protection member 220. The clockwise rotation of the first driven gear 630 causes the second driven gear 640 to rotate clockwise and drives the second driven rack 510 to move to the right, causing the second driven rack 510 and the second driven member 500 to disengage from the fall protection hole 221 of the left-side fall protection member 220, so that the car 100 can move up and down in the vertical direction.

[0054] In this embodiment, refer to Figure 1 As shown, the first driving gear 610, the second driving gear 620, the first driven gear 630 and the second driven gear 640 have the same outer diameter.

[0055] The gears with the same outer diameter make the car door 110, the driving member 300, the first driven member 400 and the second driven member 500 move the same distance. As long as the car door 110 is opened to the preset position, the first driven member 400 and the second driven member 500 can be inserted into the anti-fall holes 221 of the two anti-fall members 220 respectively.

[0056] In some embodiments, refer to Figure 1 As shown, only one guide rail 200 can be installed on the right side of the car 100, and only the first follower 400 can be installed on the top of the car 100, while the second follower 500 is omitted. The first follower 400, together with the anti-fall device 220 on the right, can also prevent the car from falling or hitting the top when the car door is opened.

[0057] Of course, only one guide rail 200 can be installed on the left side of the car 100, and only the second follower 500 can be installed on the top of the car 100, while the first follower 400 is omitted. The second follower 500, together with the anti-fall device 220 on the left, can also prevent the car from falling or hitting the top when the car door is opened.

[0058] In some embodiments, the transmission mechanism 600 can also be driven by a belt drive or a sprocket drive. Since the principles of sprocket drive and belt drive are roughly the same, taking belt drive as an example, the transmission mechanism 600 includes a driving belt, a driving pulley, a first driven pulley, a first driven belt, a second driven pulley, a second driven belt, and a third driven pulley. The driving pulley is rotatably connected to the top of the car 100, and the first driven pulley is rotatably connected to the top of the car 100. The driving pulley and the first driven pulley are spaced apart on the left and right sides. The driving belt is fitted over the outside of the driving pulley and the first driven pulley. The driving belt connects to the driving member 30. 0. The driving member 300 moves in the left and right direction, driving the driving belt to rotate the driving pulley and the first driven pulley. The second driven pulley is located behind the first driven pulley. The first driven belt is fitted outside the first and second driven pulleys. The first driven pulley drives the first driven belt to rotate the second driven pulley. The third driven pulley is distributed left and right at intervals with the second driven pulley. The second driven belt is fitted outside the second and third driven pulleys. The second driven belt is connected to the first driven member 400. Thus, the movement of the car door 110 in the left and right direction can realize the movement of the first driven member 400 in the left and right direction.

[0059] In some embodiments, the movement directions of the first follower 400 and the second follower 500 can be set to the same direction, that is, the first follower 400 and the second follower 500 can move to the left or to the right at the same time. For some elevator shafts with narrow spaces, if there is not enough space on the left or right side of the car 100 to install the fall arrestor 220, two rows of fall arrestors 220 can be set on the guide rail frame 200 on the side of the car 100 where the fall arrestor 220 can be installed, so that the first follower 400 and the second follower 500 can be inserted into the fall arrestor holes 221 of the two rows of fall arrestors 220 respectively.

[0060] In this embodiment, guide rails 200 are respectively provided on the left and right sides of the car 100. Each guide rail 200 is provided with multiple anti-falling components 220 so that the first driven component 400 and the second driven component 500 can be inserted into the anti-falling holes 221 of the anti-falling components 220 on the left and right sides, which helps to balance the force on the top of the car 100 and prevent the car 100 from tilting due to the force on one side after the anti-falling function is activated.

[0061] In some embodiments, the width of the first driven member 400 in the vertical direction is smaller than the width of the fall arrest hole 221 in the vertical direction. When the first driven member 400 is inserted into the fall arrest hole 221, if the car 100 falls or hits the top, there is only a small distance between the first driven member 400 and the bottom and top walls of the fall arrest hole 221, so as to avoid the people in the car 100 feeling a large impact.

[0062] In this embodiment, the driving member 300 is installed on the top of the car door 110, and the driving mechanism, the first driven member 400, the second driven member 500 and the transmission mechanism 600 are arranged on the top of the car 100.

[0063] The top of the existing car 100 is used to connect the traction rope. Therefore, the top of the car 100 is generally equipped with a high-strength crossbeam structure. The first driven member 400 and the second driven member 500 are set on the top of the car 100. If the car 100 falls or overshoots the top, the first driven member 400 and the second driven member 500 used for braking are connected to the high-strength crossbeam structure to prevent the car 100 from being damaged by impact.

[0064] In some embodiments, refer to Figure 1 As shown, the distance between the first follower 400 and the anti-fall member 220 is less than half of the opening stroke of the car door 110.

[0065] When the car door 110 is not opened wide enough for people to enter or exit the car 100, the first driven member 400 is already inserted into the fall arrest hole 221 of the fall arrest member 220. The unopened car door 110 helps to restrict people from entering or exiting the car 100.

[0066] In some embodiments, the horizontal distance between the fall arrestor 220 and the first driven member 400 is no more than 20cm.

[0067] When the first driven member 400 is inserted into the fall arrest hole 221 of the fall arrest member 220, the car door 110 opens to a distance of less than 20cm, which can effectively restrict personnel from entering and exiting the car 110.

[0068] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An elevator car door opening anti-fall device, characterized in that, include: The car is equipped with a door and guide boots; A drive mechanism is provided in the car, the drive mechanism is connected to the car door, and the drive mechanism drives the car door to move horizontally; The guide rail frame is arranged vertically, and the guide rail frame is provided with a vertically arranged guide rail. The guide rail and the guide shoe are slidably or rollingly engaged vertically. The guide rail frame is also provided with a plurality of anti-falling components distributed at intervals vertically, and each anti-falling component is provided with an anti-falling hole. An active component is connected to the car door, and the active component moves synchronously with the car door; The first driven member is horizontally and slidably connected to the car; A transmission mechanism is provided in the car. The transmission mechanism connects the driving member and the first driven member. The driving member drives the first driven member to insert into or disengage from the fall arrest hole on the corresponding floor through the transmission mechanism.

2. The elevator car door opening anti-fall device according to claim 1, characterized in that, There are two guide shoes and two guide rail brackets. The two guide rail brackets are distributed on both sides of the car. The two guide shoes are slidably or rollingly engaged with the two guide rails respectively. The elevator car door opening anti-fall device also includes: The second driven member is horizontally slidably connected to the car. The second driven member is connected to the transmission mechanism. The driving member drives the first driven member and the second driven member to insert into or detach from the two fall arrest holes on the corresponding floors through the transmission mechanism.

3. The elevator car door opening anti-fall device according to claim 2, characterized in that, The driving component, the transmission mechanism, the first driven component, and the second driven component employ a gear and rack meshing transmission.

4. The elevator car door opening anti-fall device according to claim 3, characterized in that, The driving member is provided with a driving rack, the first driven member is provided with a first driven rack, and the second driven member is provided with a second driven rack. The transmission mechanism includes: A first drive gear is disposed in the car, and the first drive gear meshes with the drive rack; A second drive gear is disposed in the car, and the second drive gear meshes with the first drive gear; A first driven gear is disposed in the car, and the first driven rack and the second driving gear respectively mesh with the first driven gear; The second driven gear is coaxially connected to the first driven gear, and the second driven gear meshes with the second driven rack.

5. The elevator car door opening anti-fall device according to claim 4, characterized in that, The first driven member moves in the opposite direction to the second driven member.

6. The elevator car door opening anti-fall device according to claim 4, characterized in that, The first driving gear, the second driving gear, the first driven gear, and the second driven gear have the same outer diameter.

7. The elevator car door opening anti-fall device according to claim 2, characterized in that, The width of the first driven member in the vertical direction and the width of the second driven member in the vertical direction are smaller than the width of the fall arrest hole in the vertical direction.

8. The elevator car door opening anti-fall device according to claim 2, characterized in that, The drive mechanism, the first driven member, the second driven member, and the transmission mechanism are all located on the top of the car, and the driving member is connected to the top of the car door.

9. The elevator car door opening anti-fall device according to claim 1, characterized in that, The horizontal distance between the anti-fall device and the first driven device is no greater than half the travel distance of the car door when it is opened.

10. The elevator car door opening anti-fall device according to claim 9, characterized in that, The horizontal distance between the fall arrestor and the first driven member is no more than 20cm.

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