Elevator landing door mechanism

Abstract

The utility model provides an elevator landing door mechanism which comprises an upper sill assembly, a lower sill sliding rail, a first landing door plate and a second landing door plate. The first landing door plate and the second landing door plate are installed between the upper sill assembly and the lower sill sliding rail in a sliding mode. The upper sill assembly comprises an upper sill plate, a first displacement frame, a second displacement frame and a driving part, the first displacement frame and the second displacement frame are installed on the upper sill plate in a sliding mode, the driving part drives the first displacement frame and the second displacement frame to synchronously move in the opposite or opposite directions, a first layer door plate is fixedly installed at the lower end of the first displacement frame, and a second layer door plate is fixedly installed at the lower end of the second displacement frame. An in-place switch on the support is used for detecting whether the first-layer door plate and the second-layer door plate are closed in place or not, and if a stick or a glass article is clamped between the first-layer door plate and the second-layer door plate, the first-layer door plate and the second-layer door plate are prevented from being closed in place; the photoelectric sensor detects whether the groove between the first layer door plate and the second layer door plate is blocked by articles, and if articles such as ropes are clamped in the groove, light source receiving of the photoelectric sensor can be blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator landing door mechanism. Background Art

[0002] Elevator landing doors are installed on corresponding floors, with the upper and lower door panels sliding on corresponding rails. Several sets of safety gratings or photoelectric sensors are installed between the two landing doors to detect objects between the two sets of door panels. However, when glass, ropes, or small objects pass through the landing doors, the safety gratings or photoelectric sensors often fail to detect them. When the elevator starts, the two sets of landing doors move and trap the objects, leading to safety accidents. Utility Model Content

[0003] The technical problem solved by the present invention is to provide an elevator landing door mechanism to solve the problems raised in the above background technology.

[0004] The technical problem solved by the utility model is achieved by adopting the following technical solution: an elevator landing door mechanism, comprising an upper sill assembly and a lower sill slide rail, a first door panel and a second door panel slidably mounted between the upper sill assembly and the lower sill slide rail, the upper sill assembly comprising an upper sill plate, a first displacement frame and a second displacement frame slidably mounted on the upper sill plate, and a driving member driving the first displacement frame and the second displacement frame to synchronously move in opposite directions, the first door panel being fixedly mounted on the lower end of the first displacement frame, and the second door panel being fixedly mounted on the lower end of the second displacement frame;

[0005] The middle part of the upper sill plate is provided with a bracket corresponding to the first displacement bracket and the second displacement bracket, and switches for detecting the position of the first displacement bracket and the second displacement bracket are provided on both sides of the bracket;

[0006] A photoelectric sensor is installed in the middle of the bracket, and grooves are provided on the opposite sides of the first and second door panels corresponding to the photoelectric sensor. Reflectors are provided at the grooves at the bottom of the first and second displacement racks to cooperate with the photoelectric sensors.

[0007] As a further solution of the utility model:

[0008] A plurality of safety gratings are provided between the first door panel and the second door panel.

[0009] As a further solution of the utility model:

[0010] An upper sliding groove is provided at the lower end of the upper sill plate, and a plurality of pulleys are respectively provided on one side of the first displacement frame and the second displacement frame, and are slidably installed in the upper sliding groove through the pulleys.

[0011] As a further solution of the utility model:

[0012] The driving component includes pulleys installed on both sides of the upper sill plate and a synchronous belt mounted on the pulleys. One side of the pulley is rotatably installed on the upper sill plate, and the other side is installed on the wheel frame. The wheel frame is fixedly connected to the upper sill plate. The pulley on one side of the upper sill plate is connected to the driving motor to control the reciprocating movement of the synchronous belt.

[0013] As a further solution of the utility model:

[0014] A first connecting plate is fixedly provided on one side of the upper end of the synchronous belt, and is fixedly connected to the first displacement frame through the first connecting plate. A second connecting plate is provided on the side of the lower end of the synchronous belt away from the first connecting plate, and is fixedly connected to the second displacement frame through the second connecting plate, thereby driving the first displacement frame and the second displacement frame to move synchronously in opposite directions or in opposite directions.

[0015] As a further solution of the utility model:

[0016] A lock plate is also installed on the bracket, and a lock piece that cooperates with the lock plate is provided on the first displacement frame, and the lock plate is provided with an inclined guide portion on the side facing the lock piece, and a lock hole is opened on the upper end of the lock plate. The lock piece includes a gusset plate rotatably installed on the first displacement frame and a pull rod rotatably connected to the gusset plate, and an adjustment control provided on the first door panel for controlling the pull rod. A hook is provided on one side of the gusset plate to be inserted into the lock hole, thereby fixing the first displacement frame to the bracket. Since the first displacement frame moves synchronously with the second displacement frame through a synchronous belt, the second displacement frame is synchronously locked.

[0017] As a further solution of the utility model:

[0018] The adjustment control includes a rotating frame rotatably mounted on the first-floor door panel. The rotating frame is L-shaped, with one side of the rotating frame rotatably connected to the pull rod and the other side rotatably mounted with a first adjustment wheel. The first adjustment wheel is engaged by a door blade at the outer end of the elevator door. When the elevator door rises to a certain height, the door blade at the outer end of the elevator door pushes the first adjustment wheel to rotate. The first adjustment wheel drives the rotating frame to rotate, causing the pull rod to move upward, which pushes the pinch plate upward, allowing the hook to disengage the lock hole. When the door blade no longer pushes the first adjustment wheel, the pull rod pulls the pinch plate downward due to its own gravity.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the elevator in the device needs to pass three tests before starting to lift. The first test is through the safety grating arranged on the first door panel and the second door panel to detect whether there are objects on the first door panel and the second door panel; the second test is through the in-place switch on the bracket to detect whether the first door panel and the second door panel are closed in place. If there are sticks or glass objects, they will be stuck between the first door panel and the second door panel, preventing the first door panel and the second door panel from closing in place; the third test is to detect whether there are objects blocking the groove between the first door panel and the second door panel through a photoelectric sensor. If objects such as ropes are stuck in the groove, the light source reception of the photoelectric sensor will be blocked, thereby preventing the elevator from starting; the device ensures that there are no foreign objects between the first door panel and the second door panel of the elevator through three tests, thereby ensuring the safe operation of the elevator.

[0020] The driving motor controls the first and second door panels to move synchronously in opposite directions through the synchronous belt. When the first and second door panels are closed, the pinch plate moves into the lock hole through the guide part of the lock plate, thereby locking the floor door. The pinch plate is connected to the adjustment control through a pull rod, and the adjustment control is linked to the door knife assembly outside the elevator door. The door knife assembly pushes the first adjusting wheel to move through the door knife plate in place, so as to push the pinch plate up through the pull rod, so that the hook disengages from the lock hole, preventing the elevator floor door from opening at will and ensuring accurate docking with the elevator car. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0023] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0024] Markings in the figure: 1. Lower sill slide rail; 2. Upper sill plate; 3. Bracket; 4. Clamp plate; 11. First door panel; 12. Second door panel; 13. Safety grating; 21. First displacement frame; 22. Second displacement frame; 23. Upper slide groove; 24. Pulley; 25. Drive motor; 26. Pulley; 27. Synchronous belt; 28. First connecting plate; 29. ​​Second connecting plate; 31. In-position switch; 32. Photoelectric sensor; 33. Groove; 34. Reflector; 35. Lock plate; 41. Hook; 42. Pull rod; 43. Rotating frame; 44. First adjusting wheel. DETAILED DESCRIPTION

[0025] In order to make the technical means for realizing the present invention, the creative features, the objectives and the effects thereof easier to understand, the present invention is further described below with reference to specific illustrations.

[0026] like Figures 1 to 3 As shown,

[0027] This embodiment provides an elevator landing door mechanism, including an upper sill assembly and a lower sill slide rail 1, a first door panel 11 and a second door panel 12 slidably mounted between the upper sill assembly and the lower sill slide rail 1, the upper sill assembly including an upper sill plate 2, a first displacement frame 21 and a second displacement frame 22 slidably mounted on the upper sill plate 2, and a driving member for driving the first displacement frame 21 and the second displacement frame 22 to synchronously move in opposite directions. The first door panel 11 is fixedly mounted at the lower end of the first displacement frame 21, and the second door panel 12 is fixedly mounted at the lower end of the second displacement frame 22.

[0028] A bracket 3 is provided in the middle of the upper sill plate 2, corresponding to the first displacement frame 21 and the second displacement frame 22. On both sides of the bracket 3, there are respectively provided in-position switches 31 for detecting the first displacement frame 21 and the second displacement frame 22, so as to detect whether the first door panel 11 and the second door panel 12 are closed.

[0029] A photoelectric sensor 32 is installed in the middle of the bracket 3. A groove 33 is provided on the opposite side of the first door panel 11 and the second door panel 12 corresponding to the photoelectric sensor 32. A reflector 34 or a light receiver is provided at the groove 33 at the bottom of the first displacement frame 21 and the second displacement frame 22 to cooperate with the photoelectric sensor 32 to detect light signals. If a rope or object is stuck between the first door panel 11 and the second door panel 12, the light source of the photoelectric sensor 32 will be blocked, so that the light receiver cannot receive the corresponding light signal. The photoelectric sensor 32 is connected to the controller to prevent the elevator from starting.

[0030] In this embodiment, a plurality of safety gratings 13 are provided between the first door panel 11 and the second door panel 12 to detect whether people or items are between the first door panel 11 and the second door panel 12 .

[0031] An upper sliding groove 23 is provided at the lower end of the upper sill plate 2 . A plurality of pulleys 24 are respectively provided on one side of the first displacement frame 21 and the second displacement frame 22 , and are slidably installed in the upper sliding groove 23 through the pulleys 24 .

[0032] The driving component includes pulleys 26 installed on both sides of the upper sill plate 2 and a synchronous belt 27 mounted on the pulleys 26. One side of the pulley 26 is rotatably installed on the upper sill plate 2, and the other side is installed on the wheel frame. The wheel frame is fixedly connected to the upper sill plate 2. The pulley 26 on one side of the upper sill plate 2 is connected to the driving motor 25 for controlling the reciprocating movement of the synchronous belt 27.

[0033] A first connecting plate 28 is fixedly provided on one side of the upper end of the synchronous belt 27, and is fixedly connected to the first displacement frame 21 through the first connecting plate 28. A second connecting plate 29 is provided on the side of the lower end of the synchronous belt 27 away from the first connecting plate 28, and is fixedly connected to the second displacement frame 22 through the second connecting plate 29, thereby driving the first displacement frame 21 and the second displacement frame 22 to move synchronously in opposite directions or in opposite directions.

[0034] In this embodiment, a lock plate 35 is also installed on the bracket 3, and a lock member that cooperates with the lock plate 35 is provided on the first displacement frame 21. The lock plate 35 is provided with an inclined guide portion on one side of the lock member, and a lock hole is provided at the upper end of the lock plate 35. The lock member includes a pinch plate 4 rotatably mounted on the first displacement frame 21 and a pull rod 42 rotatably connected to the pinch plate 4, and an adjustment control provided on the first door panel 11 for controlling the pull rod 42. A hook 41 is provided on one side of the pinch plate 4 to be inserted into the lock hole, thereby fixing the first displacement frame 21 to the bracket 3. Since the first displacement frame 21 moves synchronously with the second displacement frame 22 through the synchronous belt 27, the second displacement frame 22 is locked synchronously.

[0035] The adjustment control includes a rotating frame 43 rotatably mounted on the first-layer door panel 11. The rotating frame 43 is L-shaped, with one side rotatably connected to a pull rod 42 and the other side rotatably mounted with a first adjustment wheel 44. The first adjustment wheel 44 is engaged by a door blade at the outer end of the elevator door. When the elevator door rises to a certain height, the door blade at the outer end of the elevator door pushes the first adjustment wheel 44 to rotate. The first adjustment wheel 44 drives the rotating frame 43 to rotate, causing the pull rod 42 to move upward. The pull rod 42 pushes the pinch plate 4 upward, allowing the hook 41 to disengage the lock hole. When the door blade no longer pushes the first adjustment wheel 44, the pull rod 42 pulls the pinch plate 4 downward due to its own gravity.

[0036] The working principle of the present utility model is as follows: the elevator needs to pass three tests before starting to lift. The first test is to detect whether there are objects in the first door panel 11 and the second door panel 12 through the safety grating 13 arranged on the first door panel 11 and the second door panel 12; the second test is to detect whether the first door panel 11 and the second door panel 12 are closed in place through the in-position switch 31 on the bracket 3. If there are sticks or glass objects, they will be stuck between the first door panel 11 and the second door panel 12, preventing the first door panel 11 and the second door panel 12 from closing in place; the third test is to detect whether there is any object blocking the groove 33 between the first door panel 11 and the second door panel 12 through the photoelectric sensor 32. If there are objects such as ropes stuck in the groove 33, they will block the light source reception of the photoelectric sensor 32, thereby preventing the elevator from starting.

[0037] The driving motor 25 controls the first door panel 11 and the second door panel 12 to move synchronously in the direction of or in the opposite direction through the synchronous belt 27. When the first door panel 11 and the second door panel 12 are closed, the pinch plate 4 moves into the lock hole through the guide part of the lock plate 35, thereby locking the floor door. The pinch plate 4 is connected to the adjustment control through the pull rod 42, and the adjustment control is linked to the door knife assembly outside the elevator door. The door knife assembly pushes the first adjusting wheel 44 to move through the door knife plate in place, so as to push the pinch plate 4 up through the pull rod 42, so that the hook 41 disengages from the lock hole.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, which fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents. It should be noted that, in this document, if there are relational terms such as first and second, etc., they are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or device. Without further constraints, an element defined by the phrase "comprises a..." does not preclude the existence of additional identical elements in the process, method, article or apparatus that includes the element.

Claims

1. An elevator landing door mechanism, comprising an upper sill assembly and a lower sill slide rail, a first door panel and a second door panel slidably mounted between the upper sill assembly and the lower sill slide rail, the upper sill assembly comprising an upper sill plate, a first displacement frame and a second displacement frame slidably mounted on the upper sill plate, and a drive member for driving the first and second displacement frames to move synchronously in opposite directions, the first door panel being fixedly mounted at the lower end of the first displacement frame, and the second door panel being fixedly mounted at the lower end of the second displacement frame, characterized in that: The middle part of the upper sill plate is provided with a bracket corresponding to the first displacement bracket and the second displacement bracket, and switches for detecting the position of the first displacement bracket and the second displacement bracket are provided on both sides of the bracket; A photoelectric sensor is installed in the middle of the bracket, and grooves are provided on the opposite sides of the first and second door panels corresponding to the photoelectric sensor. Reflectors are provided at the grooves at the bottom of the first and second displacement racks to cooperate with the photoelectric sensors.

2. An elevator landing door mechanism according to claim 1, characterized in that: A plurality of safety gratings are provided between the first door panel and the second door panel.

3. The elevator landing door mechanism according to claim 1, characterized in that: An upper sliding groove is provided at the lower end of the upper sill plate, and a plurality of pulleys are respectively provided on one side of the first displacement frame and the second displacement frame, and are slidably installed in the upper sliding groove through the pulleys.

4. An elevator landing door mechanism according to claim 3, characterized in that: The driving component includes pulleys installed on both sides of the upper sill plate and a synchronous belt mounted on the pulleys. One side of the pulley is rotatably installed on the upper sill plate, and the other side is installed on the wheel frame. The wheel frame is fixedly connected to the upper sill plate. The pulley on one side of the upper sill plate is connected to the driving motor to control the reciprocating movement of the synchronous belt.

5. The elevator landing door mechanism according to claim 4, characterized in that: A first connecting plate is fixedly provided on one side of the upper end of the synchronous belt, and is fixedly connected to the first displacement frame through the first connecting plate. A second connecting plate is provided on the side of the lower end of the synchronous belt away from the first connecting plate, and is fixedly connected to the second displacement frame through the second connecting plate, thereby driving the first displacement frame and the second displacement frame to move synchronously in opposite directions or in opposite directions.

6. The elevator landing door mechanism according to claim 1, characterized in that: A lock plate is also installed on the bracket, and a lock piece that cooperates with the lock plate is provided on the first displacement frame. The lock plate is provided with an inclined guide portion on the side facing the lock piece, and a lock hole is provided at the upper end of the lock plate. The lock piece includes a buckle plate rotatably installed on the first displacement frame and a pull rod rotatably connected to the buckle plate, and an adjustment control provided on the first door panel for controlling the pull rod. A hook is provided on one side of the buckle plate to be inserted into the lock hole, thereby fixing the first displacement frame to the bracket.

7. An elevator landing door mechanism according to claim 6, characterized in that: The adjustment control unit includes a rotating frame rotatably mounted on the first-layer door panel. The rotating frame is an L-shaped structure. One side of the rotating frame is rotatably connected to the pull rod, and the other side is rotatably mounted with a first adjusting wheel. The first adjusting wheel is arranged in conjunction with the door blade at the outer end of the elevator door.

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