CN215558231U - Landing door and lifting device - Google Patents

Abstract

The utility model relates to the field of construction machinery, and discloses a landing door and lifting equipment, wherein the landing door comprises: the frame assembly comprises a door frame, and two side edges of the door frame are provided with first rails extending along the vertical direction; the door plate assembly comprises a first door plate and a second door plate which are connected through a linkage piece, the first door plate and the second door plate are both connected with the first track in a sliding mode, the first door plate is arranged above the second door plate, and the sliding directions of the first door plate and the second door plate are opposite all the time due to the arrangement of the linkage piece; the door lock assembly is arranged on the first door plate and the second door plate respectively, under a natural state, the first door plate and the second door plate are locked in a closing layer door state by the door lock assembly, and under the state that the door lock assembly receives the external upward acting force, the door lock assembly is unlocked, so that the first door plate and the second door plate can move back to open the layer door. The landing door is opened and closed from top to bottom, does not occupy the space of business turn over, can be automatic unblock and open under the exogenic action, need not artifically open, improves the efficiency of construction.

Description

Landing door and lifting device

Technical Field

The utility model relates to the technical field of construction machinery, in particular to a landing door and lifting equipment.

Background

When the construction elevator is installed, a landing door is arranged at an entrance of each landing for people and goods to enter and exit and protection.

The traditional landing door used by the construction elevator is generally of a two-door rotating opening-closing type structure, and needs to be manually opened and closed each time, so that the operation is troublesome; there are also some potential safety hazards; moreover, the door with the structure must be opened inwards to ensure safety, and occupies the space of an access passage, so that large goods are difficult to transport, and the construction efficiency is influenced.

Therefore, a landing door and a lifting device are needed to overcome the above technical problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the present invention aims to:

1. the landing door is opened and closed up and down, does not occupy the access space, can be automatically unlocked and opened, does not need manual opening, and greatly improves the construction efficiency;

2. the utility model provides a lifting equipment drives the unblock of lock subassembly through the trigger piece among the elevating gear for the layer door can be automatic unblock and open under elevating gear's drive, need not artifically open, improves the efficiency of construction greatly.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided a landing door comprising: the frame assembly comprises a door frame, and two side edges of the door frame are provided with first rails extending along the vertical direction; the door plate assembly comprises a first door plate and a second door plate which are connected through a linkage piece, the first door plate and the second door plate are both connected with the first track in a sliding mode, the first door plate is arranged above the second door plate, and the linkage piece is arranged to enable the sliding directions of the first door plate and the second door plate to be opposite all the time; and the door lock assembly is arranged on the first door plate and the second door plate respectively, and in a natural state, the door lock assembly locks the first door plate and the second door plate in a state of closing the landing door, and is unlocked in a state of receiving an upward acting force from the outside, so that the first door plate and the second door plate can move back to open the landing door.

Specifically, the landing door is provided with a door lock assembly to control opening and closing of the door panel assembly. When no external force acts, the door lock assembly limits the relative sliding between the first door panel and the second door panel, and the first door panel and the second door panel are jointly blocked in the door frame, so that the landing door is kept in a closed state; when the external force exerts ascending effort to the door lock subassembly, the relative slip between first door plant and the second door plant no longer is restricted, and first door plant and second door plant can move back to back of the body, make layer door switch to the open mode. This layer door opens and shuts from top to bottom, does not occupy the business turn over space, can automatic unblock and open simultaneously, need not artifically open, improves the efficiency of construction greatly.

As an optional technical scheme of layer door, the lock subassembly includes deckle board, slider, first locating part, second locating part and resets the piece, the deckle board set up in on the first door plant, the slider along vertical direction slip set up in the holding tank of deckle board, the first end activity of first locating part set up in on the deckle board, the second locating part is fixed in on the second door plant, it can drive to reset the piece the vertical lapse of slider and pressure support first locating part make first locating part with second locating part joint, the slider can be vertical upwards slided under the effect of external force, the drive first locating part breaks away from the second locating part.

As an optional technical scheme of layer door, the first end of first locating part around horizontal axis articulate in the deckle board, be equipped with the first groove of stepping down on the slider, the first of first locating part serves and is equipped with the drive division, the second of first locating part serves and is equipped with first latch hook portion, it is provided with the second latch hook portion to correspond on the second locating part, the drive division stretches into in the first groove of stepping down, the width of drive division is less than the width in the first groove of stepping down, the slider can drive when sliding along vertical direction first locating part is rotatory, makes first latch hook portion with second latch hook portion joint or break away from.

As an optional technical scheme of layer door, still be equipped with the second groove of stepping down on the slider, rotate around horizontal axis on the framed panel and be provided with manual locking lever, manual locking lever stretches into in the second groove of stepping down, manual locking lever's width is less than the width in second groove of stepping down, be equipped with transmission portion on the manual locking lever, transmission portion is used for cooperating the power part, the power part can pass through transmission portion drives manual locking lever rotates, in order to drive the slider slides along vertical direction.

As an optional technical solution of the landing door, the landing door is used in cooperation with a lifting device, and the lifting device can apply an upward acting force to the door lock assembly to unlock the door lock assembly, so that the first door panel and the second door panel can move away from each other to open the landing door.

As an optional technical solution of the landing door, the linkage part adopts a fixed pulley assembly, the fixed pulley assembly is fixed on the door frame, two output ends of the fixed pulley assembly are respectively connected with the first door plate and the second door plate, and the mass of the first door plate is greater than that of the second door plate.

As an optional technical scheme of the landing door, a second rail is further arranged on the door frame, the second rail is adjacent to the first rail, the door panel assembly further comprises a third door panel, the third door panel is slidably arranged on the second rail, a lifting rod horizontally arranged is arranged at the upper end of the third door panel, a top plate is arranged at the upper end of the first door panel, and the first door panel can drive the top plate to press against the lifting rod when ascending so as to lift the third door panel.

As an optional technical solution of the landing door, the first rail is disposed obliquely, and a distance between the first rail and the second rail gradually decreases from top to bottom.

As an optional technical solution of the landing door, the frame assembly further includes a lower bracket, the lower bracket includes a first lower connecting portion and a second lower connecting portion, the first lower connecting portion is connected to the bottom end of the door frame, the second lower connecting portion is connected to the wall surface, the first lower connecting portion is provided with a first waist-shaped hole extending in a horizontal direction perpendicular to the wall surface, and the first lower connecting portion and the second lower connecting portion are connected by a bolt penetrating through the first waist-shaped hole; and/or the frame subassembly still includes the upper bracket, the upper bracket includes connecting portion on first last connecting portion and the second, first last connecting portion with the top of door frame is connected, connecting portion are connected with the wall on the second, be equipped with the second waist type hole that extends along the horizontal direction of perpendicular to wall on the connecting portion on the second, first last connecting portion with connecting portion are through wearing to locate on the second the bolted connection in second waist type hole.

In a second aspect, there is provided a lifting device comprising: a lifting device which can lift along the height direction of an external building and comprises a trigger piece; and the landing door is used for opening and closing the lifting device, and the trigger piece can apply upward acting force to the door lock assembly when lifting.

Specifically, lifting equipment drives the unblock of lock subassembly through the trigger among the elevating gear, when trigger applys ascending effort to the lock subassembly, relative slip between first door plant and the second door plant is no longer restricted, elevating gear continues to drive first door plant lapse through the trigger, second door plant lapse under the effect of linkage, first door plant and second door plant are kept away from each other, the layer door switches to the open mode, make the layer door can be automatic unblock and open under elevating gear's drive, need not open by the manual work, construction efficiency is greatly improved.

The utility model has the beneficial effects that:

the landing door provided by the utility model is provided with the door lock assembly so as to control the opening and closing of the door panel assembly. When no external force acts, the door lock assembly limits the relative sliding between the first door panel and the second door panel, and the first door panel and the second door panel are jointly blocked in the door frame, so that the landing door is kept in a closed state; when the external force exerts ascending effort to the door lock subassembly, the relative slip between first door plant and the second door plant no longer is restricted, and first door plant and second door plant can move back to back of the body, make layer door switch to the open mode. The landing door provided by the utility model can be opened and closed up and down, does not occupy the access space, can be automatically unlocked and opened, does not need manual opening, and greatly improves the construction efficiency.

The jacking equipment that this embodiment provided drives the unblock of lock subassembly through the trigger among the elevating gear, when trigger applys ascending effort to the lock subassembly, relative slip between first door plant and the second door plant is no longer restricted, elevating gear continues to drive first door plant lapse through the trigger, second door plant lapse under the effect of linkage, first door plant and second door plant are kept away from each other, the layer door switches to the open mode, make the layer door can be automatic unblock and open under elevating gear's drive, need not the manual work open, construction efficiency is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural view of a landing door provided in the present invention in a closed state;

FIG. 2 is an enlarged schematic view of region A of FIG. 1;

FIG. 3 is an enlarged schematic view of region B of FIG. 1;

FIG. 4 is a schematic structural view of a landing door provided in the present invention in an open state;

FIG. 5 is a schematic view of the latch assembly of the present invention in a latched condition;

FIG. 6 is a schematic structural view of the door lock assembly provided by the present invention in an unlocked state;

FIG. 7 is a schematic structural view of a door frame according to the present invention;

FIG. 8 is a schematic structural view of a first door panel provided in accordance with the present invention;

FIG. 9 is a schematic structural view of a second door panel provided in accordance with the present invention;

FIG. 10 is a schematic view of a third door panel according to the present invention.

In the figure:

1. a door frame; 10. a bottom beam; 11. a first track; 12. a second track; 13. a bottom baffle; 14. a limiting plate; 15. bending the mounting plate;

2. a first door panel; 21. a first guide shoe; 22. a first guide wheel; 23. a top plate; 24. a first connecting plate;

3. a second door panel; 31. a rail clamp plate; 32. a second connecting plate;

4. a third door panel; 41. a second guide shoe; 42. a second guide wheel; 43. a lifting bar;

5. a door lock assembly; 50. a base plate; 51. a frame plate; 52. a slider; 53. a first limit piece; 54. a second limiting member; 55. a reset member; 56. a manual locking lever;

61. a fixed pulley; 62. a wire rope;

7. a lower bracket; 71. a first lower connecting portion; 72. a second lower connecting portion;

8. an upper bracket; 81. a first upper connecting portion; 811. a first mounting hole; 82. a second upper connecting portion.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, the present embodiment provides a lifting device, which is disposed on an outer wall of a building for lifting and lowering persons and goods, and includes a lifting device and a landing door, wherein the landing door is used in cooperation with the lifting device for opening and closing the lifting device, and the landing door includes a frame assembly, a door panel assembly and a door lock assembly 5.

The frame assembly is fixed on the outer wall surface of a building and comprises a door frame 1, and two side edges of the door frame 1 are provided with first rails 11 extending along the vertical direction; the door plate assembly comprises a first door plate 2 and a second door plate 3 which are connected through a linkage, the first door plate 2 is connected with a first track 11 in a sliding mode through a first guide shoe 21 and a first guide wheel 22, the second door plate 3 is connected with the first track 11 in a sliding mode through a track clamping plate 31, the first door plate 2 is arranged above the second door plate 3, and the linkage enables the sliding directions of the first door plate 2 and the second door plate 3 to be opposite all the time; on first door plant 2 and second door plant 3 are located to lock subassembly 5 branch, under natural state, lock subassembly 5 locks first door plant 2 and second door plant 3 in the state of closing the layer door, and lock subassembly 5 is receiving under the state of outside upward effort, and lock subassembly 5 is by the unblock, makes first door plant 2 and second door plant 3 can move mutually in order to open the layer door mutually.

Specifically, the landing door provided in the present embodiment is provided with a door lock assembly 5 to control the opening and closing of the door panel assembly. When no external force acts, the door lock assembly 5 limits the relative sliding between the first door panel 2 and the second door panel 3, and the first door panel 2 and the second door panel 3 are plugged in the door frame 1 together, so that the landing door is kept in a closed state; when an external force applies an upward acting force to the door lock assembly 5, the relative sliding between the first door panel 2 and the second door panel 3 is no longer limited, and the first door panel 2 and the second door panel 3 can move back to back, so that the landing door is switched to an open state. The layer door that this embodiment provided opens and shuts from top to bottom, does not occupy the business turn over space, can automatic unblock simultaneously and open, need not artifically open, improves the efficiency of construction greatly.

Further, elevating gear is including triggering the piece, when triggering the piece and go up and down and reach corresponding floor, the piece that triggers exerts ascending effort to the door lock subassembly, relative slip between first door plant 2 and the second door plant 3 is no longer restricted, elevating gear continues to drive first door plant 2 upwards through triggering the piece and slides, second door plant 3 slides downwards under the effect of linkage, first door plant 2 keeps away from each other with second door plant 3, the layer door switches to the open mode, make the layer door can be automatic unblock and open under elevating gear's drive, need not artifically open, improve the efficiency of construction greatly.

Further, the door lock assembly 5 includes a frame plate 51, a slider 52, a first limiting member 53, a second limiting member 54 and a reset member 55, the frame plate 51 is disposed on the first door panel 2, the slider 52 is slidably disposed in a receiving groove of the frame plate 51 along a vertical direction, a first end of the first limiting member 53 is movably disposed on the frame plate 51, the second limiting member 54 is fixed on the second door panel 3, the reset member 55 has a tendency of driving the slider 52 to vertically slide downward and press against the first limiting member 53, so that the first limiting member 53 is clamped with the second limiting member 54, the slider 52 can vertically slide upward under the action of the lifting device, and the first limiting member 53 is driven to be separated from the second limiting member 54.

Specifically, when no external force is applied from the lifting device, the reset piece 55 can keep the first limiting piece 53 and the second limiting piece 54 clamped to limit the relative sliding between the first door panel 2 and the second door panel 3, and the first door panel 2 and the second door panel 3 are plugged in the door frame 1 together to keep the landing door in a closed state; when the lifting device drives the sliding block 52 to vertically slide upwards, the first limiting part 53 is separated from the second limiting part 54, the relative sliding between the first door panel 2 and the second door panel 3 is not limited any more, the external force continues to drive the first door panel 2 to slide upwards through the driving sliding block 52, the second door panel 3 slides downwards under the action of the linkage part, the first door panel 2 and the second door panel 3 are far away from each other, and the landing door is switched to an open state.

Preferably, the triggering member is a hook arranged on a cage door in the lifting device, and when the cage door is lifted to a landing door, the hook acts on the sliding block 52 on the corresponding landing door to push the sliding block 52 to move upwards so as to open the landing door of the landing.

In this embodiment, the trigger can drive the sliding block 52 to vertically slide upwards, so that the first limiting member 53 is separated from the second limiting member 54, and drives the first door panel 2 to ascend, and the second door panel 3 to descend; the reset piece 55 has a tendency to drive the sliding block 52 to slide vertically downward, so that the first limiting piece 53 and the second limiting piece 54 are kept clamped.

Further, the linkage piece adopts fixed pulley assembly, and fixed pulley assembly includes fixed pulley 61 and wire rope 62, and on fixed pulley 61 was fixed in the mounting panel 15 of bending on door frame 1 top, wire rope 62 was around locating fixed pulley 61, and its both ends were connected the second connecting plate 32 on first connecting plate 24 on the first door plant 2 and the second door plant 3 respectively as fixed pulley assembly's output, and the quality of first door plant 2 is greater than the quality of second door plant 3. When the external force of trigger to slider 52 was removed, the trigger also removed first door plant 2's lifting force, first door plant 2 descends under the action of gravity, simultaneously because the quality of first door plant 2 is greater than second door plant 3, consequently first door plant 2 overcomes the gravity of second door plant 3 through wire rope 62 to the pulling force of second door plant 3, thereby it rises to drive second door plant 3, first door plant 2 and second door plant 3 are automatic to be drawn close each other and final mutual butt, the self-closing of layer door has been realized.

Optionally, the door lock assembly 5 further includes a bottom plate 50, the frame plate 51 is installed on the first door panel 2 through the bottom plate 50, the first end of the first limiting member 53 is hinged to the frame plate 51 around the horizontal axis, the slider 52 is provided with a first abdicating groove, the first end of the first limiting member 53 is provided with a driving portion, the second end of the first limiting member 53 is provided with a first hooking and locking portion, the second limiting member 54 is correspondingly provided with a second hooking and locking portion, the driving portion extends into the first abdicating groove, the width of the driving portion is smaller than that of the first abdicating groove, the slider 52 can drive the first limiting member 53 to rotate when sliding along the vertical direction, so that the first hooking and locking portion is clamped or separated from the second hooking and locking portion.

Optionally, the first hooking and locking portion and the second hooking and locking portion are both provided with an abdicating inclined surface, and when the first limiting member 53 and the second limiting member 54 are drawn close to each other, the abdicating inclined surface is arranged to drive the first limiting member 53 to rotate, so that the first limiting member 53 and the second limiting member 54 enter the locking state again.

Optionally, the landing door includes two door lock assemblies 5, which are respectively disposed on the left and right sides of the door panel assembly.

In other embodiments of the present invention, the first limiting member 53 may also be slidably or otherwise mounted on the frame plate 51 or the first door panel 2.

Optionally, a second yielding groove is further formed in the sliding block 52, a manual locking rod 56 is rotatably arranged on the frame plate 51 around the horizontal axis, the manual locking rod 56 extends into the second yielding groove, the width of the manual locking rod 56 is smaller than that of the second yielding groove, a transmission part is arranged on the manual locking rod 56, the transmission part is used for being matched with a power part, and the power part can drive the manual locking rod 56 to rotate through the transmission part so as to drive the sliding block 52 to slide along the vertical direction.

In this embodiment, the manual locking lever 56 is a cam lock, and the transmission part, i.e., the cam lock part, and the transmission part matched with the cam lock is a cam key.

Optionally, the reset member 55 is a linear elastic expansion member, the reset member 55 is disposed along the vertical direction, and one end of the reset member 55 extends into the receiving groove of the frame plate 51 and abuts against or is connected to the slider 52. The reset member 55 may be an elastic element such as an elastic positioning column or a compression spring.

Optionally, still be equipped with second track 12 on the door frame 1, second track 12 sets up with first track 11 is adjacent, the door plant subassembly still includes third door plant 4, third door plant 4 passes through second guide shoe 41 and second guide pulley 42 and slides and set up in second track 12, the upper end of third door plant 4 is equipped with the lift bar 43 of level setting, the upper end of first door plant 2 is equipped with roof 23, first door plant 2 can drive roof 23 when rising and press lift bar 43, in order to promote third door plant 4, first door plant 2 is after rising to the same height with third door plant 4, can drive third door plant 4 and rise in the lump, in order when not occupying more vertical spaces, increase the range of opening of layer door.

Optionally, the first rail 11 is disposed obliquely, a distance between the first rail 11 and the second rail 12 is gradually decreased from top to bottom, and since the second door panel 3 moves downward when the landing door is opened, when a distance between two adjacent floors is small, a part of the second door panel 3 is slidably connected to the first rail 11 on the next floor, and the large and small distance between the first rail 11 and the second rail 12 can prevent the second door panel 3 from interfering with the landing door on the next floor of the door frame 1.

Optionally, the door frame 1 includes a bottom beam 10, the bottom beam 10 is connected to two sides of the door frame 1, a bottom baffle 13 is disposed at the bottom of the side, and the baffle can interfere with a second connecting plate 32 disposed at the top end of the second door panel 3 to limit the position of the second door panel 3 in the vertical direction, so as to prevent the second door panel 3 from separating from the first rail 11.

Optionally, a limiting plate 14 is further disposed on the side of the door frame 1, and the limiting plate 14 is used for supporting the third door panel 4 to limit the position of the third door panel 4 in the vertical direction.

Optionally, as shown in fig. 2, the frame assembly further includes a lower bracket 7, the lower bracket 7 includes a first lower connecting portion 71 and a second lower connecting portion 72, the first lower connecting portion 71 is connected to the bottom end of the door frame 1, the second lower connecting portion 72 is connected to the wall surface, a first kidney-shaped hole extending in a horizontal direction perpendicular to the wall surface is formed in the first lower connecting portion 71, and the first lower connecting portion 71 and the second lower connecting portion 72 are connected by a bolt penetrating through the first kidney-shaped hole, so as to adjust a distance between the bottom end of the door frame 1 and the wall surface.

Optionally, as shown in fig. 3, the frame assembly further includes an upper bracket 8, the upper bracket 8 includes a first upper connection portion 81 and a second upper connection portion 82, the first upper connection portion 81 is connected to the bending mounting plate 15 on the top end of the side edge of the door frame 1, the second upper connection portion 82 is connected to the wall surface, a second waist-shaped hole extending in the horizontal direction perpendicular to the wall surface is provided on the second upper connection portion 82, and the first upper connection portion 81 and the second upper connection portion 82 are connected by a bolt penetrating through the second waist-shaped hole, so as to adjust the distance between the top end of the door frame 1 and the wall surface.

Optionally, as shown in fig. 3, a plurality of first mounting holes 811 are formed in the first upper connecting portion 81 in the vertical direction, a second mounting hole is formed in the side edge of the door frame 1, and the first upper connecting portion 81 is connected to the door frame 1 through a bolt penetrating through the second mounting hole and any one of the first mounting holes 811, so that the connection height between the upper bracket 8 and the wall surface is adjusted.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A landing door, comprising:

the frame assembly comprises a door frame (1), wherein two side edges of the door frame (1) are respectively provided with a first rail (11) extending along the vertical direction;

the door plate assembly comprises a first door plate (2) and a second door plate (3) which are connected through a linkage piece, the first door plate (2) and the second door plate (3) are both in sliding connection with the first track (11), the first door plate (2) is arranged above the second door plate (3), and the linkage piece is arranged so that the sliding directions of the first door plate (2) and the second door plate (3) are opposite all the time; and

door lock subassembly (5), divide to locate first door plant (2) with on second door plant (3), under natural state, door lock subassembly (5) will first door plant (2) with second door plant (3) lock in closing the state of layer door, door lock subassembly (5) are under the state that receives outside effort that makes up, door lock subassembly (5) are by the unblock, make first door plant (2) with second door plant (3) can move in order to open mutually oppositely the layer door.

2. The landing door according to claim 1, wherein the door lock assembly (5) comprises a frame plate (51), a sliding block (52), a first limiting member (53), a second limiting member (54) and a reset member (55), the frame plate (51) is disposed on the first door panel (2), the sliding block (52) is slidably disposed in a receiving slot of the frame plate (51) along a vertical direction, a first end of the first limiting member (53) is movably disposed on the frame plate (51), the second limiting member (54) is fixed on the second door panel (3), the reset member (55) can drive the sliding block (52) to vertically slide downwards and press against the first limiting member (53), so that the first limiting member (53) is engaged with the second limiting member (54), and the sliding block (52) can vertically slide upwards under the action of an external force, and driving the first limiting piece (53) to be separated from the second limiting piece (54).

3. The landing door of claim 2, wherein the first end of the first limiting member (53) is hinged to the frame plate (51) around a horizontal axis, a first abdicating groove is formed in the sliding block (52), a driving portion is arranged at the first end of the first limiting member (53), a first hooking portion is arranged at the second end of the first limiting member (53), a second hooking portion is correspondingly arranged on the second limiting member (54), the driving portion extends into the first abdicating groove, the width of the driving portion is smaller than that of the first abdicating groove, and the sliding block (52) can drive the first limiting member (53) to rotate when sliding along the vertical direction, so that the first hooking portion is connected with or detached from the second hooking portion.

4. The landing door of claim 3, characterized in that, still be equipped with the second groove of stepping down on the slider (52), it is provided with manual locking lever (56) to rotate around horizontal axis on framed panel (51), manual locking lever (56) stretch into in the second groove of stepping down, the width of manual locking lever (56) is less than the width in second groove of stepping down, be equipped with transmission portion on manual locking lever (56), transmission portion is used for cooperating power spare, power spare can pass through transmission portion drives manual locking lever (56) rotate, in order to drive slider (52) slide along vertical direction.

5. Landing door according to claim 1, characterized in that it is used in conjunction with a lifting device capable of applying an upward force to the door lock assembly (5) to unlock the door lock assembly (5) so that the first door panel (2) and the second door panel (3) can move away from each other to open the landing door.

6. Landing door according to claim 1, wherein the linkage member is a fixed pulley assembly fixed to the door frame (1), two output ends of the fixed pulley assembly are respectively connected to the first door panel (2) and the second door panel (3), and the mass of the first door panel (2) is greater than that of the second door panel (3).

7. The landing door of claim 1, wherein the door frame (1) is further provided with a second rail (12), the second rail (12) is disposed adjacent to the first rail (11), the door panel assembly further comprises a third door panel (4), the third door panel (4) is slidably disposed on the second rail (12), the upper end of the third door panel (4) is provided with a horizontally disposed lifting rod (43), the upper end of the first door panel (2) is provided with a top plate (23), and the first door panel (2) can drive the top plate (23) to press against the lifting rod (43) when ascending, so as to lift the third door panel (4).

8. The landing door according to claim 7, wherein the first track (11) is arranged obliquely, and the distance between the first track (11) and the second track (12) decreases from top to bottom.

9. The landing door according to claim 1, wherein the frame assembly further comprises a lower bracket (7), the lower bracket (7) comprises a first lower connecting portion (71) and a second lower connecting portion (72), the first lower connecting portion (71) is connected with the bottom end of the door frame (1), the second lower connecting portion (72) is connected with a wall surface, a first kidney-shaped hole extending in a horizontal direction perpendicular to the wall surface is formed in the first lower connecting portion (71), and the first lower connecting portion (71) and the second lower connecting portion (72) are connected through a bolt penetrating through the first kidney-shaped hole;

and/or, the frame subassembly still includes upper bracket (8), upper bracket (8) are including connecting portion (81) and second upper connecting portion (82) on first upper connecting portion (81), first upper connecting portion (81) with the top of door frame (1) is connected, connecting portion (82) are connected with the wall on the second, be equipped with the second waist type hole that extends along the horizontal direction of perpendicular to wall on connecting portion (82) on the second, first upper connecting portion (81) with connecting portion (82) are through wearing to locate on the second the bolted connection in second waist type hole.

10. A lifting device, comprising:

a lifting device which can lift along the height direction of an external building and comprises a trigger piece; and

the landing door of any of claims 1 to 9, for opening and closing said lifting means, said trigger being capable of exerting an upward force on said door lock assembly (5) when lifted.

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